juki APW-297&298 ENGINEERS MANUAL

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Lockstitch Automatic Welting Machine (With Automatic Welt Patch Feeder)

APW-297 APW-298

(Flap Sewing Type)

(Slant Pocket Sewing Type)

ENGINEER’S MANUAL

29346103

No.01

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PREFACE

This Engineer’s Manual is written for the technical personnel who are responsible for the service and maintenance of the sewing machine. This manual describes “Adjustment Procedure”, “Results of Improper Adjustment”, and other functions which are not covered by the Instruction Manual intended for the maintenance personnel and sewing operators at a sewing factory. All personnel engaged in repair of APW-297, 298 are required to carefully read Section 2 “Standard Adjustment” which contains important information on the maintenance of APW-297, 298. The “Standard Adjustment” consists of two parts ; the former part presents illustration and simplified explanation for the convenience of reconfirmation of the required adjustment values in carrying out actual adjustment after reading this manual once; and the latter part provides “Results of Improper Adjustment” in which sewing and/or mechanical failures, and the correcting procedures are explained for those persons who perform such adjustment for the first time. It is advisable to use “APW-297, 298 Parts Book” together with this Engineer’s Manual.

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CONTENTS

1. SPECIFICATIONS..............................1

2. NAMES OF COMPONENTS ...............3

3. STANDARD ADJUSTMENTS.............4

(1) Machine head components ................... 4

1) Main shaft components .................................... 4

1 Adjusting the main shaft origin sensor .......... 4

2 Replacing the timing belt ............................. 6

2) Needle bar components ................................... 8

1 Adjusting the height of the needle bar

(APW-297) ................................................ 8

2 Adjusting the upper/lower positions

of the needle bar frame (APW-298) ............. 8

3) Needle feed components ............................... 10

1 Needle feed adjusting (cam section) .......... 10

2 Adjusting the installing position

of the needle bar frame............................. 12

3 Adjusting the timing of the needle feed

operation ................................................. 14

4) Needle thread trimmer components ................ 16

1 Adjusting the forward end position

of the needle thread trimmer unit ............... 16

2 Adjusting the lateral position

of the needle thread trimmer unit ............... 16

3 Adjusting the width of the moving knife

of the knife unit......................................... 18

4 Adjusting the fixed knife ............................ 18

5) Bobbin thread trimmer components................. 20

1 Adjusting the bobbin thread knife ............... 20

6) Center knife components................................ 22

How to adjust the height of the center knife ....

2 How to adjust the distance

from the needle to the center knife............. 22

Adjusting the sharpness of the center knife ....

4 Attaching the center knife.......................... 22

7) Hook components ......................................... 24

Adjusting the timing of the hook to the needle....

2 Adjusting the timing of the hook ................. 24

3 Adjusting the clearance between

the needle and the hook blade point .......... 24

4 Removing and attaching the hooks............ 24

5 Adjusting the bobbin case opening lever .... 24

8) Wiper components......................................... 26

1 Adjusting the wiper ................................... 26

9) Lubrication components ................................. 26

1 Adjusting the injector for the reflux

of the face plate components .................... 26

10) Thread tension components ......................... 28

1 Adjusting the thread take-up spring............ 28

2 Adjusting the timing of the thread tension

disc to start "floating" ................................ 28

(2) Device components ............................ 30

1) Binder components........................................ 30

1 Front binder ............................................. 30

2 Rear binder ............................................. 34

2) Clamp foot components ................................. 38

1 Adjusting the tension of the clamp

foot traveling belt ...................................... 38

2 Adjusting the tension of the clamp

foot driving belt......................................... 38

3 Clamp foot front end stop position and

rear end stop position ............................... 40

4 Adjusting the garment clamp lifting amount 42 5 Adjusting the welt patch folding plate

and the flap presser.................................. 42

3) Corner knife components ............................... 44

1 Corner knife mechanism of APW-297 ........ 44

2 Corner knife mechanism of APW-298 ........ 48

3 How to set the corner knife

on the knife base wheel ............................ 52

4 Adjusting the center of the corner knife ...... 54

5 Adjusting the deflection and distortion

of the corner knife .................................... 54

6 Adjusting the knife .................................... 54

Adjusting the corner knife for parallel sewing ..

Fine adjustment of corner knife in terms of seams .

9 Adjusting the corner knife for slant sewing .. 58

56 56

(3) Optional components.......................... 60

1) Welt patch cut unit (right) : SA102 ................... 60

2) Flap supply unit (left) : SA103 ......................... 64

3) Flap and bag cloth supply unit (left) : SA104..... 66

(a) Adjustment of the sensor slit ...................... 68

(b) Adjustment of belt tension.......................... 68

(d) Adjustment of flap holding dish................... 72

4) Dart extending unit : SA106 ............................ 74

5) Suction unit : SA108....................................... 76

6) Interlining feeding unit : SA109........................ 78

Single welt and double welt change unit (right) : SA111 .....

8) Clamp bar stacker : SP44............................... 84

4. OPERATION PANEL........................88

(1)

Operating the operation changeover screen ..

(2) Check program 8 ................................. 89

(3) Initial setting table ............................... 90

1) <Sewing pattern screen>................................ 90

2) <Counter screen> .......................................... 92

3) <Adjustment data edit screen>........................ 93

4) <Operation selection screen> ......................... 95

(4) Setting of DIP switches located

in the rear of the panel ......................... 96

5. PARTS TO WHICH GREASE

OR LOCKTITE IS APPLIED ..............97

6. AIR CIRCUIT DIAGRAM

(APW-297, -298) .............................109

7. ELECTRICAL CONTROL BOX .......110

(1) Explanation of components ...............110

1) Arrangement in the control box ..................... 110

Function and setting place of each circuit board .....

111

(2) Replacing the components ................112

1) Replacing the fuse ....................................... 112

2) Replacing the EPROM ................................. 113

(3) Checking the set value of the power

voltage and changing the voltage .......113

8. LIST OF ALARM CODES ...............114

9. NAMES AND INSTALLING POSITIONS

OF THE SWITCH SENSORS..........115

(1) Adjusting the flap sensor

of the bag cloth flap supply unit ..........116

10. CIRCUIT DIAGRAM ..................... 117

(1) Block diagram 1 / 2 ............................118

(2) Connection diagram...........................120

11.

TROUBLES AND CORRECTIVE

MEASURES ...................................

(1) With regard to the machine head........122

(2) With regard to the unit ........................126

(3) Electrical parts ...................................128

122

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1. SPECIFICATIONS < APW-297>

(1) MECAHNICAL SPECIFICATIONS

1) Sewing machine : LH-597 model of 2-needle, lockstitch machine with a center knife (exclusively used for APW)

2) Sewing speed : 3,000 rpm (max.)

3) Stitch length : Lockstitch : 2.0 to 3.4 mm (standard: 2.5mm) Condensation stitch : 0.5 to 1.5 mm (standard : 1.0 mm) Back tack stitch : 0.5 to 3.4 mm (Standard : 2.0 mm) Condensation/Back tack stitch selectable

4) Types of welt : Parallel double welt, parallel single welt } Each with flap or without flap

5) Pocket lip length : Possible to set in increments of l mm within the range of 18 mm (min.) to

(Welt length)

6) Welting width : 10, 12 and 14 mm

(needle gauge)

7) Needles : ORGAN Mt × 190 #16 to #18 (standard #16)

8) Thread : Spun thread #50 (Recommended)

9) Hook : Full rotary, vertical-axis, self-lubrication hook

10) Thread take-up lever : Slide thread take-up lever

11) Needle bar stroke : 34.4 mm

12) Cloth feed mechanism: Driven by servomotor

13) Control : By a micro-computer

14) Safety mechanism : Machine operation is automatically stopped if the cloth feed mechanism

15) Lubricating oil : JUKI New Defrix Oil No.2

16) Operating air pressure : 0.5 MPa

17) Air consumption : Approx. 40 NR/min.

18) Dimensions of the machine: 980 mm (width)×1,650 mm (length) × 1,200 mm (height)

19) Weight : Approx. 380 kg

180 mm (max.) Note that the pocket lip length is 25 mm at the minimum when using the corner knife. For the longer type (option), the maximum sewing length will be 220 mm.

SCHMETZ 190R #100 to #110 (standard #100)

error detector and, the needle thread breakage detector or any of the various safety devices are actuated.

(1,580 mm – when including the stacker) (1,500 mm – when including the thread stand)

(2) ELECTRICAL SPECIFICATIONS

Once the required data is set by means of a built-in micro-computer, the data can be stored in memory (for 100 hours) using a built-in battery even after turning OFF the power to the machine unless the setting is canceled. In addition, the stored data can be output to a personal computer and saved by making use of the exclusive circuit board. Further, these data can be copied to the other machines. Consult our JUKI service man if necessary.

1) The number of patterns that can be stored in memory : 100 (0 - 99)

2) The number of cycles that can be stored in memory : 10 (0 - 9)

3) Input power : Single-phase / 3-phase : 200, 220, 230, 240, 380, 400, 415 50/60 Hz Voltage fluctuation : Within ± 10% of the rated voltage

4) Power consumption : 550 W

Noise :Workplace-related noise at sewing speed

n = 3000 min–1 : LPA ≦ 83 dB(A) Noise measurement according to DIN 45635-48-B-1.

− 1 −

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< APW-298>

(1) MECAHNICAL SPECIFICATIONS

1) Sewing machine : LH-598 model of 2-needle, lockstitch machine with a center knife and a needle stop mechanism (exclusively used for APW)

2) Sewing speed : 3,000 rpm (max.)

3) Stitch length : Lockstitch: 2.0 to 3.4 mm (standard: 2.5mm) Condensation stitch : 0.5 to 1.5 mm (Standard : 1.0 mm) Back tack stitch : 0.5 to 3.4 mm (Standard : 2.0 mm) Condensation/Back tack stitch selectable

4) Types of welt : Parallel double welt, parallel single welt, slant double welt, slant single welt, trapezoidal stitching

5) Pocket lip length : Possible to set in increments of l mm within the range of 18 mm (min.) to

(Welt length)

6) Welting width : 10, 12 and 14 mm

(needle gauge)

7) Needles : ORGAN DP × 17 #16 to #18 (standard #16)

8) Thread : Spun thread #50 (Recommended)

9) Hook : Full rotary, vertical-axis, self-lubrication hook

10) Thread take-up lever : Slide thread take-up lever

11) Needle bar stroke : 33.36 mm

12) Cloth feed mechanism : Driven by servomotor

13) Control : By a micro-computer

14) Safety mechanism : Machine operation is automatically stopped if the cloth feed mechanism

15) Lubricating oil : JUKI New Defrix Oil No.2

16) Operating air pressure : 0.5 MPa

17) Air consumption : Approx. 40 NR/min.

18) Dimensions of the machine : 980 mm (width)× 1,650 mm (length) × 1,200 mm (height)

19) Weight : Approx. 380 kg

180 mm (max.) Note that the pocket lip length is 25 mm at the minimum when using the corner knife. For the longer type (option), the maximum sewing length will be 220 mm.

SCHMETZ SY3355 #100 to #110 (standard #100)

error detector and, the needle thread breakage detector or any of the various safety devices are actuated.

(1,580 mm – when including the stacker) (1,500 mm – when including the thread stand)

Each with flap or without flap

(2) ELECTRICAL SPECIFICATIONS

1) The number of patterns that can be stored in memory : 100 (0 - 99)

2) The number of cycles that can be stored in memory : 10 (0 - 9)

3) Input power : Single-phase / 3-phase : 200, 220, 230, 240, 380, 400, 415 50/60 Hz Voltage fluctuation : Within ± 10% of the rated voltage

4) Power consumption : 550 W

Noise: Workplace-related noise at sewing speed

n = 3000 min–1 : LPA ≦ 83 dB(A) Noise measurement according to DIN 45635-48-B-1.

− 2 −

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2. NAMES OF COMPONENTS

The machine consists mainly of the following units; A Frame and structural components

(Frame, sewing table, covers, foot switch etc.)

B Clamp foot unit and feed mechanism C Corner knife unit D Binder unit (Binder components and its driving components) E Pneumatic control unit (Pneumatic control devices and pipings) F Stacker unit G Sewing machine head H Electric control unit (Control panel) I Oil pan J Operation panel K Power switch

With this machine, you can do desired welting work simply by setting materials (garment body, interlining piece, welting patch etc.) in place and operating the switches on the operation panel.

− 3 −

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3. STANDARD ADJUSTMENTS

(1) Machine head components

1) Main shaft components

Standard Adjustment

1 Adjusting the main shaft origin sensor

This sewing machine detects the upper dead point of the needle bar with the main shaft origin sensor 1 mounted inside the machine and makes the point the origin to control the revolution of the sewing machine.

.... When the power is turned ON, the sewing machine performs the operation of the main shaft origin

retrieval and stops at the upper dead point of the thread take-up lever. In a case where the machine does not stop at the upper dead point when the machine is turned by hand pulley or the like, an alarm (AL-12 : needle UP trouble) is displayed when the MACHINE READY key is pressed. In this case, the machine automatically returns to the upper dead point of the thread take-up lever by pressing the RESET key. (State to perform sewing is obtained.)

Detecting plate

setscrew

1 mm

−4 −

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Adjustment Procedures Results of Improper Adjustment

1) Turn OFF the power to the machine.

2) Loosen the setscrew and remove the top cover (lid located on the top surface of the sewing machine).

3) Turn and stop the sewing machine by hand at the lower dead point of the needle bar.

4) Loosen two collar setscrews 3and adjust so that detecting plate 2 is on the operator's side and the edge is vertical. Remove the cap located on the back of the machine head and enter a screwdriver to loosen one of the setscrews.

5) A clearance of 0.5 to 1.5 mm between the detecting plate and the sensor is the standard adjustment value. If the clearance is not within the specified value, loosen main shaft origin sensor setscrew 4to adjust the clearance.

6) When the aforementioned adjustment is completed, attach the top cover in place and turn ON the power.  The adjustment is proper when the sewing machine stops

at the upper dead point of the needle bar.

™ When the main shaft origin

sensor and the detecting plate are not properly adjusted, the sewing machine does not stop at the upper dead point of the thread take-up lever.

™ In case of APW-297, stopping

height of the needle bar (needle tip is 11.5 mm away from the throat plate) is not within the specified value, and thread breakage at the start of sewing may occur.

−5 −

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2 Replacing the timing belt

Standard Adjustment

Coupling screw No. 1

1 mm

Coupling

−6 −

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Adjustment Procedures Results of Improper Adjustment

1) Remove the top cover (lid located on the top surface of the sewing machine).

2) Remove timing belt 2 from lower sprocket wheel 1.

3) Enter a hexagonal wrenck key from section A and loosen two coupling setscrews.

4) Loosen the setscrews and remove main shaft motor 3.

5) Loosen the setscrews in the upper sprocket wheel asm.

6) Loosen the setscrews in the hand pulley gear B.

7) Pull out the upper sprocket wheel asm 4.

..... Upper sprocket wheel asm. 4is pressed in the machine

arm. Tap the wheel from the inside of the hole and pull it out toward the left-hand side (b).

8) Pull out the timing belt through the hole.

9) Enter a new timing belt and assemble it the same as before. At this time, be careful of the following matters. * When pressing upper sprocket wheel asm. 4in the machine

arm, apply the bearing mount (LOCKTITE : 085 for medium strength fit) to the wheel.

* The flat sections of both the main shaft and the motor shaft

become the positions of the coupling screws No. 1.

* Make hand pulley gear B 5come in contact with the upper

sprocket wheel asm 4.

−7 −

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2) Needle bar components

Standard Adjustment

1 Adjusting the height of the needle bar (APW-297)

Needle bar

frame

Upper side marker line is

aligned with bottom face of

needle bar frame.

Needle bar : Lower dead point state

2 Adjusting the upper/lower positions of the needle bar frame (APW-298)

The respective clearances of the upper and lower positions of the needle bar frame and the needle bar become the values described in the table below.

Clearance a b c Needle bar connection 2 needles 0.2 m/m or more 0 0.2 m/m or more 1 needle 0.2 m/m or more * 0.2 m/m or more

Portion with * (asterisk) mark : the clearance should be 0.15 m/m or more at the time when pushing up the needle bar locating at its highest position from the bottom.

At the time of 2 needles

Needle bar

fixed pin

Needle bar

bracket

Lower bushing

At the time of 1 needle

−8 −

Needle bar frame

Needle bar

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Adjustment Procedures Results of Improper Adjustment

1) To adjust the height of the needle bar, loosen needle bar bracket screw 1.

2) Turn the hand pulley to bring the needle bar to its lower dead point and remove face plate cover 2of the binder base to adjust the height. ™ Adjust so that the upper marker line engraved on the needle

bar is aligned with the bottom face of the needle bar frame when the needle bar is in the lower dead point state.

Goes up.

Comes down.

Adjusting area

Loosen setscrews 1 and 2 in the needle bar frame shaft base and turn needle bar frame shaft 3 counterclockwise. Then the needle bar frame goes up, and clearance "a" becomes smaller and clearance "c" becomes larger. Turn it clockwise and the respective clearances are reversed. (Adjusting area is up to the position where the slot of needle bar frame shaft 3becomes vertical.) After performing the adjustment, tighten setscrews 1 and 2 to fix needle bar frame shaft 3.

• When the needle bar frame is excessively high :

™ Needle bar locking is hard since

clearance "a" is small, and 1needle stop failure of slant sewing occurs. (Difference on the sewing end side becomes smaller than the given value.) In addition, needle bar locking failure occurs at the sewing end. (One stitch drops at the sewing start of the slant sewing.)

• When the needle bar frame is excessively low :

™ Needle bar releasing is hard

since clearance "c" is small, and 1-needle release failure of slant sewing occurs. (Difference on the sewing start side becomes larger than the given value.)

−9 −

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3) Needle feed components

Standard Adjustment

1 Needle feed adjusting (cam section)

It is normal that the needle feed amount is "0" (zero) when needle feed adjusting motor 1 stops at the origin.

.... When the MACHINE READY key is pressed, needle feed adjusting motor 1performs the origin

retrieval and stops at the origin.

Back of the

sewing machine

Cover setscrew



Needle feed origin sensor

−10 −

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Adjustment Procedures Results of Improper Adjustment

1) Remove needle feed adjusting motor cover 2.

2) Turn ON the power and perform the sewing machine independent operation at 500 rpm under the continuous mode.

.... At this time, needle feed adjusting motor 1is excited at the

position of the origin.

3) Loosen clamp screw 4in needle feed adjusting cam 3.

4) Turn needle feed adjusting cam 3  while checking the longitudinal move of the needle bar and tighten clamp screw 4in the cam at the position (angle) where the longitudinal move stops to fix the cam.

.... The point of the position (angle) where the longitudinal move

stops is the position where the two cover setscrews come just below.

(Caution) In addition to the normal installing angle, there is

another angle where the longitudinal move stops. For reference, the longitudinal move becomes "0" (zero) at the angle where the two cover setscrews come just above. However, the needle feed direction is reverse to the normal one at this fixing angle when the actual sewing is operated. So, do not adjust to this state.

™ In the case where the needle

feed amount does not become "0" (zero) when the needle feed adjusting motor stops at the origin, the needle feed amount in accordance with panel input value (percentage as against the sewing pitch) cannot be obtained. Accordingly, the needle feed cannot be stopped (setting the panel input value to 0%). In addition, the needle entry position in terms of stitches slips from the given entry position.

−11 −

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Standard Adjustment

2 Adjusting the installing position of the needle bar frame

Adjust the installing position of the needle bar frame so that the needle is in the center of the needle hole (slot) when the needle feed amount is "0" (zero).

−12 −

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Adjustment Procedures Results of Improper Adjustment

* Perform this adjustment after the adjustment of the needle feed

adjusting cam described in the previous clause.

1) Turn OFF the power after the needle feed adjusting motor origin retrieval operation (turn ON the MACHINE READY key).

2) Turn the hand pulley to lower the needle to the needle hole.

3) Remove the top cover (lid located on the top surface of the sewing machine).

4) Loosen clamp screw 2in needle feed rocking rear arm 1.

5) Move the needle bar frame to and fro, position so that the needle is in the center of the needle hole, and tighten clamp screw 2 in needle feed rocking rear arm 1.

™ When the position of the needle

bar frame is not adjusted as described on the left side : Stitches slip from the given needle entry position and when the adjustment is particularly improper, interference of the respective parts occurs.

• Interference of upper knife with needle thread trimmer knife

• Interference of needle bar frame

• Interference of needle with needle hole

−13 −

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Standard Adjustment

3 Adjusting the timing of the needle feed operation

Adjust the timing of the needle feed operation so that the timing of the hook catching thread is not slipped even when the needle feed amount is changed.

.... It is normal that the needle bar does not move to and fro even when turning needle feed adjusting

motor 1 at the timing of alignment of needle and hook (longitudinal move is within 0.5 mm).

Main shaft

Locus of needle feed and needle bar

The locus of normal needle feed is as shown in the figures below. The ellipse is increased or reduced in the state that the point of the timing of the hook catching thread does not slip longitudinally.

Top surface of throat plate

Operator's side

Top surface of throat plate

Operator's side

Timing of hook

catching thread

Timing of hook

4 mm 4 mm

catching thread

−14 −

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Adjustment Procedures Results of Improper Adjustment

* Perform this adjustment after the adjustments of the needle feed

adjusting cam and the installing position of the needle bar frame described in the previous clauses.

1) Turn OFF the power to the machine.

2) Turn the hand pulley to align the needle with the hook.

3) Remove the top cover.

4) Loosen setscrew 2in the upper knife driving cam.

5) Gradually move the angle of upper knife driving cam 3and temporarily tighten the cam. Then turn the needle feed adjusting motor to check the longitudinal move of needle bar.

6) Tighten the setscrew 2in the upper knife driving cam at the angle where the longitudinal move of needle bar stops to fix the cam. (Point : The longitudinal move of needle bar stops at the position where letter "S" of the cam faces upward as shown in the figure on the left.)

.... It is a difficult job and takes time to adjust the cam to the

angle where the longitudinal move of needle bar completely stops. It is no problem functionally if the longitudinal move is within

0.5 mm.

™ When the adjustment of timing

of the needle feed is improper, a given locus of needle feed cannot be obtained. As a result, needle feed effect as against the sewing material is lost.

™ Hook adjusting timing, when

needle feed amount is changed (when the sewing pitch is changed or the like), is slipped and sewing conditions will be deteriorated.

−15 −

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4) Needle thread trimmer components

Standard Adjustment

1 Adjusting the forward end position of the needle thread trimmer unit

Top surface of

throat plate

3 ± 0.5 mm

27.5 ± 0.5 mm

7 ± 0.5 mm

2 Adjusting the lateral position of the needle thread trimmer unit

17.5 ± 0.5 mm

+0.2

0.5 mm

+0.2

0.5 mm

−16 −

Page 20

Adjustment Procedures Results of Improper Adjustment

1) The forward end position of the needle thread trimmer unit is where top end A of the moving knife is 3 ± 0.5 mm away from the needle and 7 ± 0.5 mm away from the top surface of the throat plate when knife unit moving cylinder 1 and knife driving cylinder 2 are in full stroke.

2) Top end A of the moving knife is 17.5 ± 0.5 mm away from the needle and 27.5 ± 0.5 mm away from the top surface of the throat plate when knife unit moving cylinder 1 is returned

™ Loosen two setscrews 3 and perform positioning of the top

end of the moving knife for adjustment.

™ Thread trimming failure occurs. ™ Length of thread remaining from

the fabric is lengthened or shortened.

™ Interference with other

components occurs.

1) For the lateral position of the needle thread trimmer unit, adjust the center of the needles to the center of the right and left moving knives. At this time, the lapping amount of the respective needle centers and the top end of the moving knife is 0.5 mm. (Both right

+0.2 0

and left centers)

™ Loosen two setscrews 1 and adjust the position.

™ Thread trimming failure occurs.

−17 −

Page 21

Standard Adjustment

3 Adjusting the width of the moving knife of the knife unit

Center of knife driving cylinder

+0.5

4 mm

 

9 ± 0.1 mm

Clamp plate

Needle gauge Dimension

A : 2.9 N or more (300g)

10 mm 9±0.1mm Standard 12 mm 11±0.1mm

Moving knife

14 mm 13±0.1mm

4 Adjusting the fixed knife

™ The fixed knife has to be selected according to the needle gauge. Replace the fixed knife when

changing the needle gauge after delivery.

Needle gauge

10 mm 12 mm

14 mm

Selection of type Fixed knife (common to right/left) Fixed knife, left Fixed knife, right Fixed knife, left Fixed knife, right

Part No. 25442302 25443102 25443201 25443300 25443409

Standard

−18 −

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Adjustment Procedures Results of Improper Adjustment

1) Lateral dimension of the top end of the moving knife is 9 ± 0.1 mm. However, this dimension changes according to the needle gauge. Adjust the dimension to the needle gauge. Adjust the distance of the top end of the moving knife using four setscrews 1 in the moving knife guide.

(Caution)

When performing this adjustment, adjust so that the right and left moving knives in terms of the center of knife driving cylinder are set to the same dimension.

2) Projecting amount of the top end of the right/left moving knives

+0.5

is 4 mm away from the top end of the clamp when the

moving knife cylinder has been fully pressed (full stroke).

™ Loosen nut 2 in the moving knife driving cylinder, turn moving

knife driving cylinder rod 3, and move moving knife driving plate 4 in the direction of the arrow to adjust.

3) Needle thread retaining force should retain spun #60 with 2.9N or more in the direction A.

™ Adjust with two screws 5 so that the position of the clamp

plate is 4 mm from the top end of the moving knife.

+0.5 0

™ Attach the clamp plate so that it is parallel to the moving knife.

™ Thread trimming failure occurs.

™ Thread trimming failure or clamp

failure occurs.

™ When the retaining force is

insufficient, slip-off of thread at the sewing start occur

Fixed knife 2 makes plane A (blade face) of moving knife

come in close contact with top end section B of fixed knife 2.

™ Loosen two setscrews 3 in the fixed knife, make plane A of

the moving knife come in close contact with the top end of the fixed knife, then fix the fixed knife.

(Caution) When adjusting the fixed knife, perform the

adjustment with clamp 4 installed.

™ Thread trimming failure or single

thread breakage occurs.

−19 −

Page 23

5) Bobbin thread trimmer components

1 Adjusting the bobbin thread knife

Standard Adjustment

Bobbin thread knife

Throat plate

1 Non-action 2 Action 3 End of action

Operating direction

−20 −

Page 24

Adjustment Procedures Results of Improper Adjustment

1) Position of the bobbin thread knife to the throat plate

In order to prevent the bobbin thread knife from being pinched in the throat plate while cutting the thread, it is important to set the knife perpendicular to the throat plate.

1. Loosen screw 1 and operate bobbin thread knife driving cylinder 6.

2. Set bobbin thread knife bracket 7 so that the knife is not pinched in the throat plate and firmly tighten screw 1.

2) Position and height of the bobbin thread knife

The top ends of both left and right knives must be even with the throat plate surface, and the grooves in the knives must be parallel to the grooves in the throat plate when the knives actuate.

1. Loosen screws 2 and adjust so that the top ends of the knives are even with the throat plate surface.

2. Press bobbin thread knife driving cylinder 6toward A and adjust so that the grooves in the knives are parallel to the grooves in the throat plate.

3. Securely tighten screws 2.

™ When the bobbin thread knife is

lower than the top surface of the throat plate, bobbin thread trimming failure occurs.

3) How to adjust the position of the bobbin thread knife in

replacing gauges

Loosen setscrews 4 and 5 of bobbin thread knife presser plate 3, and the bobbin thread knife moves to the right or left together

with the bobbin thread knife presser plate.

4) How to replace the bobbin thread knife

Loosen setscrews 2, and you can pull out the knife downward.

5) Adjusting the sharpness of the bobbin thread knife

Adjust the sharpness of the bobbin thread knife, while properly pressing thread grasping presser springs 8 (figure on the left) against the bobbin thread knife. The force with which the springs are pressed against the knife should be minimized as far as the knife cuts the thread without fail. This helps lengthen the life of the knife.

−21 −

Page 25

6) Center knife components

Standard Adjustment

Adjust the relevant distances of the center knife as shown in the figure below.

• Highest dead point of the center knife ...... 5 mm above the surface side of the throat plate

• Lowest dead point of the center knife ....... 0.5 mm above the surface side of the throat plate

Needle

Throat plate

surface

5 mm

0.5 mm

7 mm

1 How to adjust the height of the center knife 2 How to adjust the distance from the

needle to the center knife

Surface side of the arm

3 Adjusting the sharpness of the center knife

4 Attaching the center knife

7 mm

Fixed knife

−22 −

Page 26

Adjustment Procedures Results of Improper Adjustment

1 How to adjust the height of the center knife

Loosen screw A and adjust so that a 5 mm clearance is obtained when the center knife comes to its highest dead point by raising or lowering the center knife. When tightening the screw, be careful not to provide it with a lateral play.

2 How to adjust the distance from the needle to the center

knife

Loosen screw 1 and correctly adjust the position of the center knife by moving it forward or backward.

3 Adjusting the sharpness of the center knife

The sharpness of the center knife is adjusted by pressing the side face of the center knife to the blade section of the fixed knife of the throat plate. Move the center knife laterally by screw 2 or rotate it by screw 3 to obtain the suitable pressing force. Be sure to adjust the pressing force as light as possible so that the center knife completely cuts the two plies of the fabric used.

4 Attaching and removing the center knife

™ Removing the center knife Loosen screws 4, and remove the center knife. Tighten screws 4, and attach the center knife. At this time, push the center knife to the base until it will go no further and fix at that position.

−23 −

Page 27

7) Hook components

Standard Adjustment

1 Adjusting the timing of the hook to the needle 2 Adjusting the timing of the hook

Hook blade point

Needle

0.8 mm

4 mm

0 to –0.05 mm

0 to 0.05 mm

3 Adjusting the clearance between the needle and the hook blade point

4 Removing and attaching the hooks

• Removing the hooks 1 Remove the throat plate. 2 Remove the bobbin case opening lever. 3 Loosen three setscrews 2 in the small gear of the hook shaft. 4 Turn the handwheel until the needle bar is raised to its highest position

and take out the hooks.

• Attaching the hooks 1 Reverse the above procedures. 2 Turn by hand the bobbin case holder until its projection rests in the groove

on the throat plate and fix the throat plate.

5 Adjusting the bobbin case opening lever

0.2 to 0.3 mm

−24 −

Page 28

Adjustment Procedures Results of Improper Adjustment

1 Adjusting the timing of the hook to the needle

™ Remove the throat plate. ™ When the needle has gone up 4 mm from its lowest point. adjust

the position of the hook so that the blade points of left/right hooks align with the center of the needle. At this time, adjust so that the clearance between the side face of the needle and needle guard 1 of the hook is 0 to -0.05 mm, that the clearance between the side face of the needle and the blade point is 0 to

0.05 mm and that the distance between the top end of the needle hole and the hook blade point is 0.8 mm.

2 Adjusting the timing of the hook

™ Loosen three setscrews 2 in the small gear of the hook shaft.

Manually turn the hook to make the hook blade point align with the center of the needle. Then tighten setscrews 2 while pressing the hook downwards and the gear upwards in order to eliminate a vertical play of the hook shaft.

3 Adjusting the clearance between the needle and the hook

blade point

™ Remove the throat plate and tilt the machine backwards. ™ Loosen screws A and Bin the hook driving shaft saddle located

on the machine side to be adjusted.

™ Lightly tap hook driving shaft saddle C, and move it to the left

or right until the clearance between the needle and the blade point of the hook is adjusted to 0 to -0.05 mm. Then firmly tighten screws A. In addition, moderately tighten screws B.

(Caution) Screw B is fixed holding the hook driving shaft

bushing. If it is tightened excessively, the turning torque of the hook driving shaft will be increased. So, be careful not to tighten it excessively.

5 Adjusting the bobbin case opening lever

™ Turn the handwheel by hand in the regular direction to let bobbin

case opening lever 4 withdraw to the end of its stroke in the direction of arrow and make sure that there is a clearance of

0.2 to 0.3 mm between the bobbin case opening lever and projection 5 of the bobbin case (turn the bobbin case in the direction of arrow and hold it in place by hand). This can be adjusted by loosening screw 3 in the bobbin case opening lever.

−25 −

Page 29

8) Wiper components

1 Adjusting the wiper

Standard Adjustment

28 mm

9) Lubrication components

Standard Adjustment

1 Adjusting the injector for the reflux of the face plate components

™ Reflux of the face plate components is performed

with injector 1 installed on the bottom side of the machine bed.

™ The standard value of the reflux amount is

obtained at the position where the injector adjustment screw 2 is turned back four times from its fully screwed state.

™ Adjusting the amount of oil in the hook

™ Appropriate amount of oil in the hook is obtained when a sheet of

paper is placed approximately 1 cm away from the hook, operate the sewing machine for 10 seconds, and oil splashes stick to the paper at the height of the hook blade point as shown in the figure.

c d

A B

Min. Max.

−26 −

Page 30

Adjustment Procedures Results of Improper Adjustment

Adjust the wiper with clamp screw 1 so that the dimension of clearance between the bottom end of the wiper and the face plate of the machine head is 28 mm when the cylinder is actuated.

If the wiper operating amount is small, slip-off of thread at the sewing start occurs.

If the wiper operating amount is large, defective stitch tightness at the sewing start occurs.

Adjustment Procedures Results of Improper Adjustment

1) Tilt the machine head.

2) Loosen nut 3 and move screw 2 in the direction of the arrow to adjust the injector.

™ Moving the screw in the direction A strengthens the injector

and the reflux amount is increased.

™ Moving the screw in the direction B weakens the injector and

the reflux amount is decreased.

1) Perform the adjustment of the amount of oil with screw 1 in the outer hook. Turning clockwise decreases the amount of oil and turning it counterclockwise increases the amount of oil.

™ Oil may drop from the bottom of

the face plate.

−27 −

Page 31

10) Thread tension components

1 Adjusting the thread take-up spring

Standard Adjustment

0.2 N

7 to 8 mm

2 Adjusting the timing of the thread tension disc to start "floating"

9 mm

Adjusting nut

−28 −

Page 32

Adjustment Procedures Results of Improper Adjustment

1 Adjusting the thread take-up spring

™ For adjusting the tension of the left needle thread take-up spring,

loosen screw 1 and turn 2. Turning 2 clockwise will increase the tension of the left needle thread take-up spring, or counterclockwise will decrease it. For adjusting the tension of the right needle thread take-up spring, loosen screw 3 and turn 4. Turning 4 clockwise will increase the tension of the right needle thread take-up spring, or counterclockwise will decrease it. For adjusting the stroke of the left needle thread take-up spring, loosen screw 5, and turn 6. Turn 6 clockwise to increase the stroke of the left needle thread take-up spring or counterclockwise to decrease it. Adjust the stroke of the right needle thread take-up spring in the same procedure as mentioned above. Standard adjustment value

Stroke : 7 to 8 mm Spring pressure : 0.2N

2 Adjusting the timing of the thread tension disc to start

"floating"

™ Adjust disc floating joint 8so that both the left and the right

tension discs start to float simultaneously when thread tension disc releasing cylinder 7 has actuated. Adjust the floating distance within the range from 1.0 to 1.5 mm. The standard value of the clearance between the disc floating joint 8 and the thread tension bracket plate 9is 9 mm. (When the cylinder does not actuate.)

−29 −

Page 33

(2) Device components

1) Binder components

Standard Adjustment

1 Front binder

a Adjustment of torsion b Lateral adjustment

Front binder

Garment body

clamp

c Adjustment of inclination

−30 −

Page 34

Adjustment Procedures Results of Improper Adjustment

a Adjustment of torsion

1) The difference (parallelism) of the clearance between the garment body clamp and the front binder (welt patch ruler) should be within 0.2 mm when the top end of the garment body clamp has moved from position a to that of b.

™ When the aforementioned dimension is not obtained, loosen

setscrew 1, loosen two nuts 2, and adjust the torsion of the front binder while pressing two setscrews 3 on base 4.

(Caution)

When setscrew 1 is loosened, the front binder falls down. Push upward (in the direction of the arrow) base 4 when tightening setscrew 1.

™ If the parallel move is not

obtained, the front and rear welt patch widths become uneven.

b Lateral adjustment

1) Check the needle entry position (dimensions c and d in the figure should be laterally equal.).

™ When the dimensions c and d are different from each other,

loosen screw 7 and nut 5, and move binder !0 to the right or left.

™ The stopper in the lateral direction of the binder is adjusted

with screw 6.

™ Slightly loosen nut 8 and screw 9 when the binder cannot be

laterally adjusted.

(Caution)

The inclination of the front binder changes when 8 and 9 are loosened. Adjust the inclination referring to c Adjustment of inclination.

c Adjustment of inclination

1) In the state that the front binder rides on the welt patch ruller with the power OFF, loosen screws 7 and 9, and nut 8, and perform adjustment of the parallelism of the front binder.

™ If c and d are not equal, the

difference of right and left welt patch widths is caused.

−31 −

Page 35

1 Front binder

d Adjustment of longitudinal position

Joint

Needle entry position

Standard Adjustment

3 mm

Stopper

23 to 24 mm

10.5 to 11 mm

f Adjustment of material guide

e Adjustment of height

The heights of top surfaces of welt patch rulers should be equal.

Top surface of

sewing table

0.5 to 1 mm

1 mm 2 mm

−32 −

Page 36

Adjustment Procedures Results of Improper Adjustment

d Adjustment of longitudinal position

1) Loosen screws 1 and adjust so that the distance from the needle entry position to the top end of the welt patch ruler is

10.5 to 11 mm.

(Caution)

Check that the knife cover section of binder base does not interfere with the center knife.

e Adjustment of height

1) Turn ON the power, loosen the setscrew of the stopper, and adjust the height so that the distance from the top surface of the sewing table to the bottom face of the welt patch ruler is 23 to 24 mm when the binder goes up.

2) Loosen nut 2 at the top end of the cylinder, and adjust so that a clearance of 3 mm is provided between the cylinder joint and the pin when the binder comes down (with the power OFF).

3) Lift front binder 3, loosen nut 7, turn stopper bolt 4 and adjust so that the heights of the rulers should be equal when the heights of the top surfaces of the welt patch rulers of front binder 3 and rear binder 6 are not equal at the position where stopper bolt 4 comes in contact with binder stopper 5.

™ If the heights of the front and the

rear rulers are not equal, welt patch or interlining may be in danger of being caught in the joint of the ruler at the time of jump feed after start. In addition, garment material may be in danger of being caught in the joint of the ruler.

f Adjustment of material guide

1) Clearance between the top surface of welt patch ruler when it is pressed and lowered by the material guide spring and the bottom face of the material guide is 1 mm.

2) Clearance between the material guide and the welt patch ruler is 2 mm when the material guide goes up.

3) Loosen nuts 8 and adjust the clearance with bolts 9 when the material guide comes down.

4) Clearance between the material guide and the needle in the lateral direction is 0.2 to 0.5 mm at the part of the shank (thick part of the needle).

5) Loosen screw !0 to adjust the clearance.

6) Adjust the pressing pressure of the material guide with screw !1.

−33 −

Page 37

Standard Adjustment

2 Rear binder

a Adjustment of inclination and longitudinal adjustment

b Adjustment of torsion

3 to 4 mm

To be “0”

−34 −

Page 38

Adjustment Procedures Results of Improper Adjustment

a Adjustment of inclination and longitudinal adjustment

1) Loosen four setscrews 2 and perform the adjustment of inclination of rear binder 3. Tighten setscrews 2 so that the bottom face of the welt patch ruler and the top surface of sewing table 4 should be parallel when the power is turned OFF. At the same time, tighten setscrews 2 so that the clearance between rear binder 3and the front binder is 3 to 4 mm.

(Caution)

When four setscrews 1 in the binder bracket are loosened, not only the inclination of rear binder but also that of all devices mounted on the binder such as front binder, flap feeding unit, etc. will change. Do not loosen the setscrews unless the adjustment of inclination of the whole devices is performed.

b Adjustment of torsion

1) The rear binder is required to be set straight as against the front binder.

2) Loosen screws 5 to adjust the direction of torsion of the rear binder as against the front binder which has completed the parallel adjustment in terms of the moving direction of the clamp foot.

™ Torsion of the rear binder

causes the unevenness of left/ right and front/rear of the welt patch.

−35 −

Page 39

2 Rear binder

c Lateral adjustment

d Adjustment of height

Standard Adjustment

1 to 1.5 mm

e Adjustment of welt patch clamp needle

14 mm

2.5 mm 12 mm

−36 −

Page 40

Adjustment Procedures Results of Improper Adjustment

c Lateral adjustment

1) It is necessary that the rear binder is installed in the way that it has no slip in the lateral direction as against the front binder which has completed the adjustment of the needle entry position.

2) When the rear binder slips in the lateral direction as against the front binder, loosen bolt 2 in the binder oscillating stopper and adjust the slip by moving in and out stopper 1.

3) Check that the bottom face of welt patch ruler 3 and the top surface of sewing table 4are parallel as viewed from the operator’s side.

d Adjustment of height

1) Adjust the clearance between the bottom face of the welt patch ruler and the top surface of the sewing table to 1 to 1.5 mm when the rear binder is coming down by the up-and-down cylinder.

2) When the clearance is not obtained, loosen lock nut 5 in the up-and-down cylinder to adjust the clearance.

3) When the power is turned ON, the distance from the top surface of the table from the bottom face of the ruler is 110.5 mm (reference), and the clearance between the top surface of the table and the welt patch holding dish is 14 mm (reference).

™ When the rear binder slips in the

lateral direction, there is a danger that interlining or welt patch is caught with the joint section of the front or rear binder. In addition, the unevenness of left/right welt patch widths is caused.

e Adjustment of welt patch clamp needle

1) The welt patch clamp needle in the rear binder is drawn back from the welt patch ruler when the power is turned ON.

2) Protruding amount from the welt patch ruler to the top end of the needle is 2.5 mm when the welt patch is clamped.

3) To adjust the protruding amount of the needle, loosen lock nut 6 in the welt patch clamp needle drive cylinder and adjust the amount. The standard dimension is 12 mm when the needle is drawn back.

4) Check that there is no longitudinal play in terms of the whole needle including the cylinder when the needle comes out. If there is a play, loosen cylinder lock nut 6 and make the dimension of 12 mm larger.

(Caution) However, the needle should not come out above

the welt patch ruler in the state that the needle is drawn back.

−37 −

™ If the needle comes out above

the welt patch ruler, welt patch clamp failure due to the blunt needle or slippage of interlining or welt patch at the time of jump feed during sewing is caused.

Page 41

2) Clamp foot components

Standard Adjustment

1 Adjusting the tension of the clamp foot traveling belt

9.8 ± 2N

8.2 mm

Driving

pulley

Long slot

Driven pulley

2 Adjusting the tension of the clamp foot driving belt

2.1 mm

3 to 4N

−38 −

Page 42

Adjustment Procedures Results of Improper Adjustment

™ The tension of the clamp foot traveling belt can be adjusted by

loosening lock nut 1 and shifting the driven pulley along the long slot. (The pulley can be shifted by moving adjusting screw 2 back and forth.) The tension on the belt should be adjusted so that the middle of the belt slackens by approximately 8.2 mm when a pressure of 9.8 ± 2 N is applied. After making the adjustment, securely tighten lock nut 1.

™ If the tension is excessively low,

variation of sewing position or knife position is caused.

The tension of the clamp foot driving belt can be adjusted by loosening setscrew 3 and moving the whole of motor bracket up and down. The tension on the belt should be adjusted so that the middle of the belt slackens by approximately 2.1 mm when a pressure of 3 to 4N is applied. After making the adjustment, securely tighten setscrew 3.

™ If the tension is excessively low,

variation of sewing position or knife position is caused.

−39 −

Page 43

Standard Adjustment

3 Clamp foot front end stop position and rear end stop position

Standard distances for photosensor location

For rear end stop

Photosensor

Detector

plate

Garment clamp

70 mm

Rear end stop position

For front end detector

Center of the needle

Front end stop position

320 mm

225 mm 355 mm

8 mm

Garment clamp

35 mm

Slit section

−40 −

Page 44

Adjustment Procedures Results of Improper Adjustment

™ Clamp foot front end stop position and rear end stop position

are to be determined by the position of the photosensors. Determine the stop position of the clamp foot as shown in the figure referring to the standard distances for photosensors. Clamp foot front end is where tip of the garment clamp is 355 mm away from the center of the needle. Clamp foot rear end is where tip of the garment clamp is 225 mm away from the center of the needle.

™ Set detector plate 3so that it is positioned approximately in

the center of photosensor 2slit section. When the position is not made as mentioned above, loosen photosensor bracket setscrew 1 and adjust the position by moving photosensor 2to the right or left.

−41 −

Page 45

Standard Adjustment

4 Adjusting the garment clamp lifting amount

Clamp foot

cylinder bracket

A – B = 0.2 mm or less

Garment

clamp (left)

Garment clamp

20 to 22 mm

Sewing table

Garment clamp (right)

5 Adjusting the welt patch folding plate and the flap presser

1 to 1.5 mm 1 to 1.5 mm

1.5 mm

16 mm

−42 −

Page 46

Adjustment Procedures Results of Improper Adjustment

4 Adjusting the garment clamp lifting amount

™ The garment clamp, after the power is turned ON, goes up by

means of the air cylinder. The standard lifting amount of the garment clamp is 20 to 22 mm from the surface side of the sewing table measured at the tip of it. Adjust the lifting amount by loosening setscrew 1 in the clamp foot cylinder bracket, and move the whole of the air cylinder up or down.

The clearance between A - B must be kept in parallel to the welt patch base plate. Make sure that the difference between the front and rear ends of each garment clamp must not exceed

0.2 mm. If the clearance is not kept in parallel, loosen screws 2, and move the garment clamp in the direction of arrow using the welt patch base plate as reference.

™ Loosen screws 3 and adjust so that the clearance between

the garment clamp and the welt patch base plate should be

0.8 to 1.3 mm.

™ Standard overlapping width of folding plate 3with welt patch

base plate 4is 1 to 1.5 mm.

™ To adjust the overlapping amount, loosen setscrew 1 and move

folding plate 3properly.

™ The standard position of flap presser 6is where the top end

comes out by 1.5 mm from the folding plate rubber 5(the rubber is pasted at the position which is 16 mm away from the top end of the folding plate).

™ To adjust the position of flap presser 6, loosen setscrews 2

and move flap presser 6properly.

−43 −

Page 47

3) Corner knife components

Standard Adjustment

1 Corner knife mechanism of APW-297 [Operation of the corner knife]

Turn corner knife travel motor a ON, and moving corner knife b (sewing start position) will travel to the position which has been predetermined in accordance with the length to be sewn. At the travel end position, the moving corner knife and fixed corner knife c (sewing end position) will be raised by each exclusive lifting air cylinders d and e, and cut a material.

Origin detector plate

Moving corner knife origin detection photoswitch

[Corner knife cutting position]

Sewing start corner knife position

Garment clamp

G Gauge (mm) 10 12 14 A Dimensions after assembled (mm) 129.9 127.4 124.4

Sewing end corner knife position

320 mm

Garment clamp

Center of

the needle

−44 −

355 mm

35 mm

Page 48

Adjustment Procedures Results of Improper Adjustment

™ When the desired dimension cannot be obtained, loosen

setscrew f to adjust the dimension.

−45 −

Page 49

Standard Adjustment

Adjusting the clearance between fixed corner knife and moving corner knife

3 mm

Moving corner knife

Adjusting the height of the corner knife

25 mm

Fixed corner knife

Knife guide

Table

3.5 mm

−46 −

Page 50

Adjustment Procedures Results of Improper Adjustment

™ Provide a clearance A of 3 mm between the fixed corner knife

and the moving corner knife at the position of the origin as shown in the figure. The position of the origin of the moving corner knife is detected at the moment when the corner knife returns to its origin after having travelled. The corner knife stops after having travelled 25 mm from the point where photoswitch a detected detector plate b. At that time, clearance a is 3 mm. Adjust the moving corner knife by sliding switch attaching bracket d after loosening setscrew c.

™ When the corner knife lifting cylinder reaches its lowest position,

there must be a clearance of approximate 3.5 mm between the top ends of both moving corner knife and fixed corner knife and the surface side of the table as shown in the figure. This adjustment can be made by loosening lock nut 1 and turning adjust nut 2.

−47 −

Page 51

Standard Adjustment

2 Corner knife mechanism of APW-298 [Operation of the corner knife]

Turret rotation

motor

Turret lock detection

Origin detector plate

[Corner knife cutting position]

Sewing start corner

knife position

Garment clamp

Sewing end corner knife position

Moving corner knife origin detection

320 mm

Garment clamp

355 mm

35 mm

Center of

the needle

G Gauge (mm) 10 12 14 A Dimensions after assembled (mm) 200 196.3 192.5

−48 −

Page 52

Adjustment Procedures Results of Improper Adjustment

™ When the desired dimension cannot be obtained, loosen

setscrew f to adjust the dimension.

−49 −

Page 53

Standard Adjustment

Adjusting the clearance between fixed corner knife and moving corner knife

3 mm

Moving corner knife Fixed corner knife

Adjusting the height of the corner knife

Moving corner knife

25 mm

7.7 mm

Table

Knife guide

Fixed corner knife

Corner knife

lifting cylinder

−50 −

Page 54

Adjustment Procedures Results of Improper Adjustment

™ Provide a clearance A of 3 mm between the fixed corner knife

and the moving corner knife at the position of the origin as shown in the figure. The position of the origin of the moving knife is detected at the moment when the corner knife returns to its origin after having travelled. The corner knife stops after having travelled 25 mm from the point where photoswitch a detected detector plate b. At that time, clearance A is 3 mm. Adjust the moving corner knife by sliding switch attaching bracket d after loosening setscrew c.

™ When the corner knife lifting cylinder reaches its lowest position,

there must be a clearance of 7.7 mm between the top ends of both moving corner knife and fixed corner knife and the surface side of the table as shown in the figure. This adjustment can be made by loosening lock nut 1 to adjust the screwing amount and moving the whole lifting rods 2 up or down.

−51 −

Page 55

Standard Adjustment

3 How to set the corner knife on the knife base wheel

Figure observed

by an operator

Open

Direction of

Set as desired

Free

rotation

Difference 0

Free

Right 2 mm

Left 2 mm

Difference 2 mm

Turret lock detector plate

Difference 2 mm

Detector plate

1.5 ± 0.5 mm

−52 −

Page 56

Adjustment Procedures Results of Improper Adjustment

™ Loosen setscrew 1 and adjust the turret lock proximity switch

so that a clearance of 1.5 ± 0.5 mm is provided between the switch and the detector plate.

−53 −

Page 57

Standard Adjustment

4 Adjusting the center of the corner knife

Deflection of 0.15 mm per travelling distance of 300 mm

Deflection of 0 ± 0.5 mm per travelling distance of 180 mm

Travelling distance of 180 mm

Corner knife travelling path

Clamp foot travelling path

Center of the needle

Needle

5 Adjusting the deflection and distortion of the corner knife

Not good Good

Seam

0.3 to 0.5 mm

6 Adjusting the knife

−54 −

Page 58

Adjustment Procedures Results of Improper Adjustment

The center of the corner knife should be aligned with the center of the needle when the corner knife moves. Although the alignment is correctly adjusted at the time of delivery, in the event that the corner knife bracket is moved due to an external impact, loosen the bolt fixing the corner knife frame in place, and shake the whole corner knife bracket so that the clearance between the moving corner knife and the center of the needle is 0 ± 0.5 mm or less when the moving corner knife is moved approximately 180 mm. When adjusting the clearance by moving the corner knife bracket, be sure to loosen the setscrew in the fixed bracket supporting the opposite side of the shaft.

™ If the corner knife is attached with deflected to right or left, or

distorted, defective state of the cut part may result as illustrated in the figure on the left. The corner knife should always cut the center of the seams and should not cut the thread in the seam. Once the center of the corner knife has been correctly adjusted, only a fine adjustment will be required to attach a corner knife blade.

When replacing or adjusting the corner knife, first move the clamp foot to its backward travel end using the CLAMP FOOT TRAVEL key on the operation panel, and secondly remove the sewing table and operate the corner knife elevating solenoid valve by hand to allow the corner knife to go up. Then take the below-stated steps of procedure. After the adjustment, carry out thorough-going tests to confirm that no faulty cut product is finished. Then start the sewing work.

−55 −

Page 59

Standard Adjustment

7 Adjusting the corner knife for parallel sewing

Approx. 4.5 mm

Tip of the corner knife blade

G ... Needle gauge

Groove in the

knife holder

8 Fine adjustment of corner knife in terms of seams

−56 −

Page 60

Adjustment Procedures Results of Improper Adjustment

™ The following description explains the adjusting method for the

corner knife for parallel sewing which is the standard type of sewing.

1) Adjust the opening amount of corner knife holders 1 in the figure on the left to 4.5 mm and temporarily tighten screw 2.

2) Insert the corner knife into the groove in the corner knife holder as shown in the figure on the left. Position the corner knife so that the distance almost same as the needle gauge is provided between the tips of blades. Then fix the knife there by turning eccentric pin 3 in the direction of the arrow. This temporarily fixes the corner knife. Then perform a trial stitching using the material to be sewn in the actual sewing, and finely adjust the installing position of the corner knife so that the notch matching the seam is obtained.

1) Loosen eccentric pin 3 shown in the figure given at the top of the previous page, and adjust the cutting length 6 shown in the figure at the bottom of the previous page by moving the corner knife in the direction of arrow 4.

(Caution) When moving the corner knife, top end 5 of the

knife should be covered.

2) Loosen screws 2 shown in the figure at the top of the previous page, and adjust the angle of notch 7 shown in the figure at the top of the previous page by changing the opening amount of the corner knife holders.

−57 −

Page 61

Standard Adjustment

9 Adjusting the corner knife for slant sewing

™ When using the corner knife in the slant sewing with a difference, adjust the corner knife following

the instructions described below, based on the aforementioned temporarily fixed position of the corner knife for parallel sewing.

™ As an example, the adjusting procedure of corner knife adapting to the following sewing pattern is

described.

Sewing start difference ... A Sewing end difference ... B

Parallel sewing state Slant sewing state

Make the blade protrude from the standard position by narrowing the angle of corner knife 2.

Parallel sewing state Slant sewing state

−58 −

Page 62

Adjustment Procedures Results of Improper Adjustment

1) To adjust the corner knife to sewing start difference A, corner knife blade 1 on the left-hand side should be kept in the parallel sewing state as illustrated in the sketch on the left, and corner knife blade 2 should be moved to extend the cutting length in accordance with the difference as illustrated in the sketch on the right. (Follow the procedure same as that described on the next page.)

2) The corner knife is adjusted to rear difference B in the similar manner. Only corner knife blade 3 should be moved to extend the cutting length in accordance with the sewing end difference. After the completion of the adjustment, finely adjust knife blades 1, 2, 3 and 4 in accordance with the seam in the procedure sama as that described on the next page. The corner knife can be adjusted by extending the cutting length of the longer seam regardless of the kinds of slant sewing.

−59 −

Page 63

(3) Optional components

1) Welt patch cut unit (right) : SA102 Standard Adjustment

Welt patch whose front and rear sides are cut should be aligned with the cutting position of the center knife.

Welt patch receiver plate asm.

(OK) (NG)

Figure (a)

Welt patch cut presser

1 mm

7 to 8 mm

The lifting positon of the welt patch cut knife is where the blade end of the knife is lower 1 mm from the top surface of sponge rubber.

* Expel the air with the finger valve located in the rear of the

power switch, loosen screw 3, and pull out the knife upward to replace the knife. (Be careful of the direction of the knife blade.)

* The blade section is on the left-hand side as observed

from the front.

−60 −

Page 64

Adjustment Procedures Results of Improper Adjustment

™ The centers of welt patch holding plate asm. and binder asm.

should be aligned with each other. Welt patch cut knife in terms of welt patch clamp needles should be positioned in the center.) e If not, loosen screw 1 to adjust the position of welt patch

holding plate.

1) Make the welt patch clamp needles appear in the state of the binder with swung and set the binder lifting cylinder to air-free state.

2) Lift the binder by hand and make the welt patch cut knife appear. Then checking with the naked eye the clearance between the knife and the welt patch clamp needles at the longitudinal position of the knife, adjust the clearance. (Figure (a)) < Perform the aforementioned checking by operating the solenoid valve by hand.>

(Caution) Perform the aforementioned adjustment after

adjusting the welt patch width.

™ Welt patch cut presser

• Welt patch cut presser should be positioned 7 to 8 mm away

from the welt patch receiver plate.

• Welt patch cut knife should be positioned in the center of

groove of the welt patch cut presser.

• When the welt patch is pressed by the welt patch cut presser,

the pressing pressure should be equal longitudinally and laterally.

™ If the cutting position of front and

rear of the welt patch is not in the center, the unevenness of left/right welt patch widths is caused. Further, in the worse case, welt patch supply failure is caused.

™ If the pressing pressure is

uneven, welt patch cut failure or occurrence of smallwrinkle at the time of welt patch cut is caused.

1) Adjust the vertical position and longitudinal pressing pressure of the welt patch cut presser by loosening two screws 2.

2) Adjust the lateral direction of the welt patch cut presser by loosening two screws 4.

3) Adjust the protruding amount by loosening nut 5at the top end of the cylinder and turning the cylinder rod.

−61 −

™ If the protruding amount of the

knife is excessively large, welt patch cut failure is caused.

Page 65

Standard Adjustment

11 mm

8 mm

• Lifting amount of the welt patch cut presser should be 8 mm from the welt patch receiver plate.

• Position of the welt patch cut presser should be 11 mm from the edge of the welt patch receiver plate.

1 to 1.5 mm

Single welt and double welt changeover switch

0.5 to 1 mm

Clearance between the detector plate and origin sensor 5is 1 to 1.5 mm. Sensor should be turned ON in the state that the sensor travel base travels to the operator's side until it will go no further and collides with knife travel base (B).

The switch should protrude 0.5 to 1 mm from the top surface of the welt patch receiver plate.

−62 −

Page 66

Adjustment Procedures Results of Improper Adjustment

™ Adjust the lifting amount by loosening nut 4and turning the

cylinder rod.

™ Adjust the position by loosening two screws 1.

™ Adjust the clearance and position of the origin sensor 5by

loosening two screws 2.

™ Adjust the vertical position of the single welt and double welt

changeover switch by loosening screw 3.

™ When this switch is pressed with

the single welt stopper, the operation of the cutting knife of front and rear of the welt patch is stopped.

™ When the single welt stopper is

provided, if the cutting knife of front and rear of the welt patch operates, the knife interferes with the stopper and the knife breakage is caused.

−63 −

Page 67

2) Flap supply unit (left) : SA103

35 to 36 mm

Standard Adjustment

135 mm

54 mm

12.5 to 13.5 mm

5 to 6 mm

Clamp click

1.5 to 2.5 mm

3 to 4 mm

Binder

Top surface of sewing table

−64 −

Page 68

Adjustment Procedures Results of Improper Adjustment

1) Adjust with stopper 1 the clearance (3 to 4 mm) in the height direction between the clamp click and the binder when the clamp click comes down.

2) Adjust with stopper 2 the vertical travel amount of the flap supply unit.

3) Adjust the clearance (12.5 to 13.5 mm) between the clamp click and the sewing table by loosening screws 5 and !0. (To be equal in the longitudinal direction)

4) Adjust with stopper 3 the clearance between the side face of the binder and the clamp click when the clamp click comes down.

5) Loosen nut 4 in the oscillating cylinder and adjust the height (135 mm) of the clamp click from the top surface of the sewing table when the clamp click returnes to the position of the receiver plate.

6) Adjust the clamping pressure of the clamp click by loosening screws 5.

7) Adjust the parallel of the clamp click to the sewing table by loosening screws 6.

8) Adjust the angle of flap receiver plate !1by loosening screw 7. Adjust the longitudinal inclination of the flap receiver plate !1 by loosening two screws 8. Adjust the clearance (5 to 6 mm) between the flap receiver plate !1and the clamp click by loosening two screws 9.

™ If the clearance between the

clamp click and the sewing table is excessively small, the clamp click interferes with the flap presser or the rubber on the folding plate.

™ If the clearance between the

clamp click and the sewing table is excessively large, there is a danger that the finished size of the flap varies.

−65 −

Page 69

3) Flap and bag cloth supply unit (left) : SA104

Standard Adjustment

™ Origin slit should be positioned 15.8 mm

from the flap receiver plate.

Origin slit

15.8 mm

58.9 mm

(Reference value)

Flap presser arm

Flap presser arm and presser arm driving cylinder do not interfere with each other, and should move smoothly.

Press the flap presser uniformly.

Flap presser

Holding dish

Align the flap presser with the edge of the holding dish to install it.

−66 −

Page 70

Adjustment Procedures Results of Improper Adjustment

™ Adjust the position of the origin slit by loosening screw 5. ™ The flap sensor should move in parallel to the holding dish

when the flap sensor moves longitudinally.  Loosen screws 3 and 4 to adjust the flap sensor.

™ The flap sensor should move smoothly without any play.

 Loosen screw 1 and 2 to adjust the flap sensor.

™ If it does not move smoothly, loosen screw 6 and adjust the

position and angle of the cylinder.

™ Adjust the pressing pressure of the flap presser by loosening

screw 7.

™ Adjust the longitudinal position of the flap presser by loosening

screw 8.

−67 −

Page 71

Standard Adjustment

(a) Adjustment of the sensor slit

™ Position of the origin slit 1 is 15.8 ± 0.3 mm away from holding dish 2.

15.8 ± 0.3 mm

(b) Adjustment of belt tension

0.52 N

4.7 mm

−68 −

Page 72

Adjustment Procedures Results of Improper Adjustment

(a) Adjustment of sensor slit

Loosen setscrew 3 and adjust origin slit 1.

(b) Adjustment of belt tension

1) Loosen four setscrews 4 in the motor, draw motor 5 in the direction of the arrow f to stretch the belt.

2) Apply a 0.52N load to the center of the belt and confirm that the belt sags 4.7 mm.

™ If the belt is excessively

stretched, the service life of the belt is deteriorated or driving torque will be caused.

™ If the belt is insufficiently

stretched, tooth skipping will be caused.

−69 −

Page 73

Standard Adjustment

™ Distance from flap presser arm 1 to the edge of holding dish 2 is (58.9 mm). (Reference value)

In addition, install so that flap presser arm 1 and the edge of holding dish 2 should be almost parallel.

™ Pressure on the top end side of flap presser 3 is low and the flap presser is installed slightly

slantingly.

Top end

(58.9 mm)

−70 −

Page 74

Adjustment Procedures Results of Improper Adjustment

1) Loosen two setscrews 7 in the flap presser rotating base to adjust the flap presser.

Note) At this time, check that flap presser cylinder 8 moves

smoothly. (Expel air from the cylinder to check.)

Loosen two setscrews 6 in the flap presser base, move flap

presser base 5 in the direction of the arrow, and adjust so that flap presser 3 is aligned with the edge of holding dish 4.

3) Loosen two setscrews 9 in the flap presser and install flap presser 3 slightly slantingly to increase the pressure on the top end side of flap presser 3.

™ Flap is not pressed or flap may

slip at the time of delivery of flap.

−71 −

Page 75

(d) Adjustment of flap holding dish

To come in close contact

Standard Adjustment

5 to 6 mm

Needle

377.5 ± 0.5 mm from the center of needle

−72 −

Page 76

Adjustment Procedures Results of Improper Adjustment

1) Loosen two setscrews 3 in the flap holding dish and adjust so that the clearance between flap holding dish 1 and clamp nail 2 is 5 to 6 mm and so that the edge A of flap holding dish 1 is parallel to the edge B of clamp nail 2.

2) Loosen two setscrew 6 and adjust the flap holding dish to

377.5 ± 0.5 mm away from the center of the needle. (At this time, make holding plate fitting shaft 4 come in close contact with shaft base 5.)

™ When the clamp nail is not in

parallel to the flap holding dish, the flap is sewn slantingly.

™ The sewing position of the flap

in the lateral direction may slip.

−73 −

Page 77

4) Dart extending unit : SA106

Assembling procedure

Control box

CN36 connector

Center of

the needle

CN43 connector

Top surface of sewing table

89 mm

135 mm

−74 −

Page 78

Assembling procedure Caution when assembling

™ Connect dart extending cylinder 2 to connecting plate 1with

the screws as shown.

™ Install the solenoid valve for dart extending 5with the screws

at the second place from the right side of the upper manifold while inserting a packing between the valve and manifold.

• Piping

Connect the air tubes of ø4, green 6 and yellow 7, located on the side of dart extending cylinder to the joint of the solenoid valve.

™ When the screw is excessively

tightened, malfunction of the cylinder is caused.

• Wiring

Connect the connector of the dart upper detection sensor 8to CN36 located on MAIN circuit board 9. Insert the pins of the solenoid valve cable !0into No. 45, +24V and No. 46, Dart output of the connector CN43.

1. Position of the dart extending Determine the center at the positon of 135 mm from the center of the needle. If the 135 mm is not obtained, loosen screws 4 in connecting plate 1to adjust the position. The presser of the dart extending should press the upper part of the center of the needle. Adjust the lateral direction by loosening screw 3.

2. Loosen nut !1and adjust the height of the dart extending so that it is 89 mm from the top surface of the sewing table.

−75 −

Page 79

5) Suction unit : SA108

Assembling procedure

Control box

Packing (2)

Packing (1)

For vacuum

CN73 : Vacuum output OUT-71

−76 −

Page 80

Assembling procedure Caution when assembling

™ Attach suction plate 1together with packings (1) and (2) in

the rear of the main body frame with screws (spring washers and nuts). 5 places

™ Attach duct attching base 2to main body frame 3with screws.

(spring washer and nut).

™ Replace the sewing table with the one for vacuum.

™ Attach the solenoid valve to the solenoid valve base. ™ Connect the solenoid valve cable 4to CN73 connector on I/O

circuit board 5inside the control box.

™ Connect the air tubes, ø4 Yellow 6and ø4 Green 7of the air

cylinder for valve drive to the solenoid valve.

−77 −

Page 81

6) Interlining feeding unit : SA109

Assembling procedure

ø6 Tube

Stepping motor

Finger valve

Solenoid valve

Control box

CN71 connector

CN68 connector

−78 −

Page 82

Assembling procedure Caution when assembling

™ Attach the interlining feeding unit body from the top surface of

the table with screws 1 and nuts 2 (3 places). (In this case, place a spacer 3 between the body frame and the interlining feeding unit and fix the unit. In case of the machine with the vacuum unit, the spacer is not necessary.)

Piping

™ Connect ø6 Blue tube 4 to the solenoid valve from the air

supply tube of the solenoid valve located at the power switch bracket section located under the right-hand bottom of the table. Connect ø4 Yellow 5 and ø4 Green 6 tubes to the cylinder for scissors drive.

Wiring

™ Insert +24V cable of solenoid valve cable for scissors drive 7

to No. 35 of CN68 connector on I/O circuit board 8 inside the control box and insert the output cable to No. 36 of CN68 connector.

™ Insert automatic interlining feeding cable 9 of the stepping

motor for interlining feeding to CN71 connector on I/O circuit board 8.

−79 −

Page 83

Interlining feeding unit <SA109>

Standard Adjustment

Moving knife

1.5 to 2 mm

Moving knife

Guide (D)

0.3 to 0.5 mm

Guide (C)

0.8 to 1.2 mm

1 to 1.5 mm

0.8 to 1.2 mm

Interlining

−80 −

Page 84

Adjustment Procedures Results of Improper Adjustment

1) Position of guide A !0in terms of fixed knife 8should be 0.3 to

0.5 mm away from the blade point and 1.5 to 2 mm away from the top surface of the blade. When the position is not obtained, loosen screws 2 to adjust the position.

2) Top end of guide B 9should be in the position of 0.8 to 1.2 mm from the bottom face of fixed knife 8. When the position is not obtained, loosen screw 3 to adjust the position.

3) Guide A !0 and guide B 9should be parallel and perpendicular each other. If they are not parallel, adjust them by loosening screw 3.

4) Provide a clearance of 1 to 1.5 mm between guide A !0and guide B 9. If not, adjust it by loosening screw 3.

5) Length of engagement of scissors on the fixed side and that on the moving side shoud be 0.8 to 1.2 mm at the top end.

6) Loosen screw 4 and adjust pressing pressure of guide B 9 so that it is equal at the left end and right end of the interlining feeding roller.

7) Rolled interlining should be fed to the center through the slot section of the table. Loosen screws 5, 6 and 7 for fixing guide to adjust the guide in accordance with the width of the interlining.

8) Adjusting the interlining guide position It is necessary to adjust so that the guide (D) is positioned in the center of the slot of the sewing table and that the height is aligned with the table surface. Loosen setscrew A to adjust the longitudinal position and setscrew B to adjust the height.

Guide (D)

Sewing table

Guide (C)

−81 −

Page 85

7) Single welt and double welt change unit (right) : SA111

Assembling procedure

Set collar

−82 −

Page 86

Assembling procedure Caution when assembling

™ Attach finger valve 6to the fulcrum base 5with the screws. ™ Attach cylinder stay 7to fulcrum base 5with the screws. ™ Connect cylinder stay 7to air cylinder 8with the pin. ™ Assemble rod end 9to cylinder 8. ™ Attach rod end 9to clamp foot arm (right) !0 with the screw. ™ Attach air operate valve !2to solenoid valve base (1) !1with

the screws.

• Air piping

™ Branch ø6 tube !3 from the regulator, and connect one of ø4

black tube 1to air operate valve !2and the other to finger valve 6.

™ Connect ø4 pink tube 2 from finger valve 6, ø4 blue tube 3

and ø4 transparent tube 4 from air cylinder 8to air operate valve !2via the rear of the clamp foot.

™ Clamp foot arm (right) !0should move to the left or right (ba )

by the air cylinder 8when finger valve 6is changed over.

™ Adjust the position of the set collar so that it is the position of

the double welt when the clamp foot arm is on the left and that it is the position of the single welt when the clamp foot arm is on the right.

−83 −

Page 87

8) Clamp bar stacker : SP44

Assembling procedure

Double-side adhesive tape

Stacker unit

Connecting place

−84 −

Page 88

Assembling procedure Caution when assembling

™ Attach hinge attaching plate 1 to the left side face of the body

frame with four pcs. each of screw 2, spring washer 3 and flat washer 4.

™ Attach two connecting blocks 5 to the left side face of the

body frame with two pcs. each of screw 6.

™ Peel off the paper on the double-side adhesive tape on the

rubber cushion and paste rubber cushion !0 to connecting block

5. (2 places)

™ Attach pipe support (1) 7 and pipe support (2) 8 with setscrews

™ Put the whole stacker on the hinge to set it. ™ Connect the connector on the stacker side to connector A !1.

™ Connect the air source from the joint at the top of the regulator.

™ Perform piping to the pipe for air blow and fix it with setscrew

!2.

−85 −

Page 89

Clamp bar stacker : SP44

Standard Adjustment

◎ Cloth presser bars (1) 5 and (2) 6 should uniformly

press cloth holder base 7. In addition, the relation between cloth presser bar (1) 5 and that (2) 6 in terms of cloth holder base 7 should be as shown in the figure. (Bars (1) and (2) do not interfere with each other.) When cloth presser bar (2) 6 is released, it should not come in contact with left side cover !2.

◎ When the clamp bar stacker is in the standby state,

the relation between cloth brush bar 8 and cloth presser bar (1) 5 should be as shown in the figure.

◎ Position of the cloth placing base

Cloth placing

180 mm

base

Sub table

32 mm

10 mm

11 mm

−86 −

120 mm

86 mm

Page 90

Adjustment Procedures Results of Improper Adjustment

™ Adjust the inclination and the protruding amount of cloth presser

bar (1) 5 by loosening screw 1.

™ Adjust the inclination and the protruding amount of cloth presser

bar (2) 6 by loosening screw 2.

™ Adjust the stroke of cloth presser bar (2) 6 by loosening screw

™ Adjust the position of cloth brush bar 8 by loosening nut 4.

™ Adjust the dimension 180 mm from left side cover !2to the

cloth placing base by loosening nut 9.

™ Adjust the positions of cloth presser bar (1) 5 and cloth brush

bar 8 by loosening nuts !0 and !1.

−87 −

Page 91

4. OPERATION PANEL

(1) Operating the operation changeover screen

• Turn ON “2” of the DIP switch (DSW1) located on the side of the panel, and press “1” of the numeric keys, while holding pressing key. Then the screen moves to the operation selection screen.

• Each operation can be changed in this screen.

• Pictograph No. is displayed above each pictograph.

Alphabet “D” means that this screen is the operation selection screen.

[ DF ]

Alphabet in this section means the pictograph No. (A to G)

< DB >

<DA>

<DB>

Data contained in [ ] do not change even when

Data contained in < > change when key is pressed.

key is pressed.

* Setting of binder self-holding operation changeover *

: Self-holding of operation of clamp foot and binder is not performed.

: Self-holding of operation of clamp foot and binder is performed. Press the RESET button to release this setting. Standard operation

* Setting of back tack stitching operation changeover *

: Standard operation

(The sewing machine temporarily stops at the time of back tack stitching operation.)

<DC>

<DD>

: The sewing machine dose not stop and continues to sew in the back tack

stitching.

* Setting of folding plate release at the time of corner knife operation *

: Folding plate is closed and flap presser continues to be closed at the time of

corner knife operation.

: This setting returns the folding plate and opens the flap presser at the time of

corner knife operation.

Standard operation

* Setting of binder oscillating operation changeover *

: Automatic welt patch feeding unit operates. Standard operation

: Automatic welt patch feeding unit stops.

(Binder does not oscillate.)

− 88 −

Page 92

[DE]

* Setting of starting speed at the sewing start *

Data setting commendable value : 500 rpm (Data range : 500 to 2,500 rpm)

5 0 0

[DF]

7 0 0

[DG]

1 0 0 0

(2) Check program 8

Setting data (input with the numeric keys)

* Setting of speed of 2nd stitch at the sewing start *

Data setting commendable value : 700 rpm (Data range : 500 to 2,500 rpm)

Setting data (input with the numeric keys)

* Setting of speed of 3rd stitch at the sewing start *

Data setting commendable value : 1,000 rpm (Data range : 500 to 2,500 rpm)

Setting data (input with the numeric keys)

Status of the batch of sensors is displayed in this screen.

1) Pressing adjustment data edit screen key, press “0” of the numeric keys, and pictograph No. [ CP ] “CHECK PROGRAM” is displayed in the operation display section.

2) Press “8” of the numeric keys, then press key to start CHECK PROGRAM mode = 8. At this time, the screen below is displayed.

● : ON

CHECK PROGRAM

＊ → 0123456789 IN0＊ ○○○○○○○○○ IN1＊ ○○○○○○○○○○ IN2＊ ○○○○○○○○○○ IN3＊ ○○○○○○○○○○ IN4＊ ○○○○○○○○○○ IN5＊ ○○○○○○○○○○ IN6＊ ○○○○○○○○○○ IN7＊ ○○○○○○○○○○ IN8＊ ○○○○○○○○○○

○ : OFF

IN9＊ ○○○○○○○

KEY <R> = RETURN

Press “R” key to end the check program and the screen returns to the standard one.

(Caution) IN67 to 96 are for reserves.

− 89 −

Page 93

(3) Initial setting table

The initial value of each data is as given below when the power is turned ON.

1) <Sewing pattern screen>

<AA>

<AB>

<AC>

<AD>

<AE>

* Operation mode changeover *

: Cloth feed mode (at this time, tension disk is closed.)

* Sewing mode changeover *

: L-size sewing

* Sewing reference changeover *

: Rear-reference sewing (The sewing end position is spaced 320 mm away from

the needle bar.)

* Changeover of operation/stop of the automatic flap feeding unit *

: Setting of the automatic flap feeding unit operation

* Changeover of operation/stop of the stacker operation *

: Setting of the stacker operation

<AF>

[AG]

2 5 0

<AH>

0. 0

<AI>

0. 0

[AL]

* Changeover of the welt patch cutting device operation *

: Setting of the welt patch cutting device operation

* Flap jump speed setting *

: Flap jump speed (unit : mm/s)

* Setting of flap concealed stitching data *

: Flap concealed stitching data for the sewing start of left-hand side seam (seam

is produced outside the flap.)

* Setting of flap concealed stitching data *

: Flap concealed stitching data for the sewing end of left-hand side seam (seam

is produced outside the flap.)

* Setting of flap forced stop data *

: Flap forced stop

− 90 −

Page 94

[AM]

* Corner knife selection *

: Corner knife selection

<AN>

<AO>

[AP]

1 2

[AQ]

* Setting of difference at the sewing start *

: Difference at the sewing start (The right-hand side seam is shorter than the left-

hand side one.)

* The pictograph appears on the display only for APW-298. For the APW-297, it

will not appear on the display.

* Setting of difference at the sewing end *

: Difference at the sewing end (The left-hand side seam is shorter than the right-

hand side one.)

* The pictograph appears on the display only for APW-298. For the APW-297, it

will not appear on the display.

* Setting of the center knife actuating position at the sewing start *

: Center knife actuating position at the sewing start

* Setting of the center knife actuating position at the sewing end *

: Center knife actuating position at the sewing end

1 2

<AR>

0 . 0

<AS>

0 . 0

[AT]

2 . 5

<AU>

* Setting of the corner knife actuating position at the sewing start *

: Corner knife actuating position at the sewing start (The knife retracts.)

* Corner knife actuating position at the sewing end *

: Corner knife actuating position at the sewing end (The knife retracts.)

* Lockstitch pitch setting *

: Lockstitch pitch

* Setting of condensation stitching and back tack stitching at the sewing

start *

: Setting of condensation stitching and condensation pitch at the sewing start

1 . 0

− 91 −

Page 95

[AV]

* Setting of the number of back tack stitches at the sewing start *

: Setting of the number of back tack stitches at the sewing start

<AW>

1 . 0

[AX]

<AY>

<AZ>

* Setting of condensation stitching and back tack stitching at the sewing end *

: Setting of condensation stitching and condensation pitch at the sewing end

* Setting of the number of back tack stitches at the sewing end *

: Setting of the number of back tack stitches at the sewing end

* Dart stretcher operation changeover *

: Dart stretcher is set to operative.

* Vacuum operation changeover *

: Vacuum is set to operative.

<Aa>

2) <Counter screen>

[BA]

[BB]

[BC]

* Changing over the operation of the automatic interlining cloth feeder *

: Automatic interlining cloth feeder is set to operative.

* Total counter *

* No. of pcs. counter *

* Bobbin thread counter *

<BD>

* Setting of the actuation of the bobbin thread remaining amount detecting

device and the bobbin thread remaining amount adjusting counter *

− 92 −

Page 96

3) <Adjustment data edit screen>

<CA>

<CB>

<CC>

<Ca>

[Cb]

* Changeover of the clamp foot position after completion of sewing *

: Back end stopping mode

* Changeover of operation/stop of optional dart stretcher*

: Dart stretcher operates.

* Changeover of operation/stop of optional vacuum *

: Vacuum operates.

* Setting of the speed of the automatic interlining cloth feeder *

: Low speed * The pictograph appears on the display only when the automatic interlining cloth

feeder is mounted.

* Excess length of interlining cloth to be fed by the automatic interlining

cloth feeder (at the start of sewing) *

* The pictograph appears on the display only when the automatic interlining cloth

feeder is mounted.

[Cc]

<CD>

<CE>

[CF]

0 . 1 0

[CG]

* Excess length of interlining cloth to be fed by the automatic interlining

cloth feeder (at the end of sewing) *

* The pictograph appears on the display only when the automatic interlining cloth

feeder is mounted.

* Welt patch sensor detecting time *

: Stop

* Setting of thread trimming timing *

: Timer of the thread trimmer (standard timing)

* Setting of the stacker timer 1 *

: Stacker timer 1 (unit : second)

* Setting of the stacker timer 2 *

: Stacker timer 2 (unit : second)

1 . 5 0

[CH]

6 0

* Setting of needle throwing ratio for the normal feed section *

: Needle throwing ratio for the normal feed section (The needle throws in direction same as that of the feed.)

− 93 −

Page 97

[CI]

6 0

* Setting of needle throwing ratio for the back tack stitching at the sewing

start *

: Needle throwing ratio for the back tack stitching at the sewing start (The needle rocks in the opposite direction of the feed.)

[CJ]

6 0

[CK]

3 0 0 0

[CL]

1 5 0 0

<CM>

* Setting of needle throwing ratio for the back tack stitching at the sewing

end *

: Needle throwing ratio for the back tack stitching at the sewing end (The needle throws in direction same as that of the feed.)

* Setting of sewing speed under the high-speed mode *

: Number of revolutions for lockstitching

* Setting of sewing speed under the low-speed mode *

: Setting of the sewing speed for condensation stitching or backtacking

* Setting of the sewing machine independent operation mode *

: The sewing machine independent operation mode starts up using the DIP

switches.

: No operation

[CN]

2 . 0 0

[CO]

2 . 0 0

[CP]

<CR>

<CS>

* Setting of ON time of the intermittent operation of the sewing machin

under the independent sewing mode *

* Setting of OFF time of the intermittent operation of the sewing machine

under the independent sewing mode *

* Check program mode selection *

* Front reference position changeover *

: Front reference position is spaced 140 mm away from the needle position.

* Display mode changeover *

: Cycle mode

− 94 −

Page 98

4) <Operation selection screen>

<DA>

<DB>

<DC>

<DD>

* Setting of binder self-holding operation changeover *

: Standard operation

* Setting of back tack stitching operation changeover *

: Standard operation

* Setting of folding plate release when the corner knife actuates. *

: Standard operation

* Seting of binder oscillating operation changeover *

: Standard operation

[DE]

5 0 0

[DF]

7 0 0

[DG]

1 0 0 0

* Setting of starting speed at the sewing start *

: Data setting commendable value : 500 rpm

* Setting of speed of 2nd stitch at the sewing start *

: Data setting commendable value : 700 rpm

* Setting of speed of 3rd stitch at the sewing start *

: Data setting commendable value :1,000 rpm

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Page 99

(4) Setting of DIP switches located in the rear of the panel

The switch has to be normally set to “OFF”.

5 and 6 : Changeover of the model

5 6

1 2 3 4 5 6 7 8

OFF

7 : Display of Key lock switch

: Standard (Key lock switch is

displayed.)

: Key lock switch is not displayed.

Display of changeover of cycle mode and pattern mode

: APW297

: APW298

8 : Changeover of display

: Standard display

: Inversion display

(Caution) To change the DIPSW, be sure to perform the change with the power OFF.

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5. PARTS TO WHICH GREASE OR LOCKTITE IS APPLIED

Main shaft and thread take-up lever components

LOCKTITE (Bearing mount)

Needle bar frame components

Grease

Molybdenum grease

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juki APW-297&298 ENGINEERS MANUAL

Specifications and Main Features

Frequently Asked Questions

User Manual