Adler 745-22, 745-23, 745-24 Service Manual
Contents Page:
Home
Part 3: Service Instructions Cl. 745-22; -23; -24
1. General
2. Transport Carriage
2.1 Rollers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Forward End Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Rear End Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4 Timing Belt Tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5 Changing the Timing Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3. Folder
3.1 Stroke Movement of the Folder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Aligning the Folder to the Center of the Pocket Opening . . . . . . . . . . . . . . . . . . . . . 13
3.3 Position of the Folder to the Needles and the Center Knife . . . . . . . . . . . . . . . . . . . . 14
3.4 Guide Plates on the Folder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4. Clearance of the Transport Clamps to the Folder sole
4.1 Manual Adjustment of the Transport Clamps (745-22) . . . . . . . . . . . . . . . . . . . . . . . 16
4.2 Pneumatic Quick Clamp Adjustment (745-23) . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5. Marker Lights
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
. . . . . . . . . . . . . . . . . . . . . 16
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6. Knife Brackets for Cutting the Corners
6.1 Adjusting the Position of the Corner Incisions . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.2 Adjusting the Knife Brackets for Bias Corner Incisions (745-24) . . . . . . . . . . . . . . . . . 28
6.3 Changing the Corner Knives (745-22 and 745-23) . . . . . . . . . . . . . . . . . . . . . . . . . 30
6.4 Changing the Corner Knives (745-24) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7. Adjusting the Piping Reverser (745-23)
8. Cloth Slider Plate and Support Plate
9. Stroke Height of the Transport Clamps
9.1 Clearance of the flap clamps to the slider plate . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
10. Synchronizer
11. Machine Head
11.1 Crank Pin on the Arm Shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
11.2 Needle Bar Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
11.2.1 Slewing Movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
11.2.2 Setting the Needle Bar Link to the Needle Bars . . . . . . . . . . . . . . . . . . . . . . . . . . 42
11.2.3 Turning the Needle Bars on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
11.2.4 Assembling and Removing the Needle Bar Link . . . . . . . . . . . . . . . . . . . . . . . . . . 46
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Contents Page:
11.3 Hook Shaft Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
11.4 Tooth Play of the Hook Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
11.5 Looping Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
11.6 Height of the Needle Holders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
11.7 Clearance of the Hook Points to the Needles . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
11.8 Needle Guard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
11.9 Changing the Hook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
11.10 Bobbin Case Holding Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
11.11 Aligning the Light Barriers of the Remaining Thread Monitor . . . . . . . . . . . . . . . . . . . 59
11.12 Center Knife . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
11.13 Thread Controller Springs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
11.14 Trimming and Clamping Device for the Needle Threads . . . . . . . . . . . . . . . . . . . . . 65
11.15 Trimming and Clamping Device for the Underthreads . . . . . . . . . . . . . . . . . . . . . . 66
11.16 Thread Puller for the Needle Threads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
11.17 Winder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
11.18 Changing the Needle Holders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
12. Setting the Optional Equipment
12.1 Draw-off Device and Bundle Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
12.2 Length-controlled Feed and Trimming Device for Reinforcement Strips . . . . . . . . . . . . 73
12.3 Holder, Pocket Bag and Waistband Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
12.4 Reflecting Light Barrier for Flap Scanning (745-22 and 745-24) . . . . . . . . . . . . . . . . . 76
12.5 Throw-over Stacker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
12.5.1 Setting the Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
12.5.2 Setting the Height of the Counterholder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
12.5.3 Setting the Position of the Placement Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
12.5.4 Setting the Speed of the Smoother Movement . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
1. General
These Service Instructions describe the adjustments on the sewing
unit in a prac t i cal o r de r.
Attention!
The various setting positions are interdependent.
It is therefore essential that the individual settings be made in the
order described.
ATTENTION !
The tasks described in these Service Instructions may only be
conducted by skilled personnel or appropriately trained persons!
Danger of Breakage !
Before starting the sewing unit again after disassembly first conduct
the necessary setting work as per these Service Instructions.
Never start the sewing unit with an incorrect direction of turn of the
drive motor.
To avoid damage to the clamp linings:
Run the lowered transport clamps into the rear end position only with
cloth in pla c e.
Caution Risk of Injury !
Before repair, conversion and maintenance work:
–
Turn the main switch off.
Exception:
Setting work conducted with testing, setting or sewing programs
of the control u ni t .
Adjustment work and function testing with the sewing unit running
–
Conduct adjustment work and function testing with the sewing unit
running only under observance of all safety measures and with
greatest caution.
Setting work in the area of the corner knives, of the center knife
and the needles
–
Remove the app r op ri at e p art s be fo re c o nd uc t ing th e s e tt i ng wo rk
in order to avo i d i n j ur y.
Exception:
The parts are essential for the setting work.
Pedal
–
Attention!
In the sewing programs the sewing unit can be accidentally started
by stepping d own on the pedal.
3
Setting gauges
The following setting gauges are available on request:
Subclass Setting gauges Order no. Application
745-22; -23; -24
745-24
Subclass Replacement part Pieces Order no.
745-22;-23;-24
Gauge 0246 002591 Crank pin to the arm shaft
Gauge 0244 001001 Hook shaft height
Arresting pi n 0211 000700 Looping stroke sett i ng
Measuring bridge 0212 0 04942 Ne edl e holde r heigh t
Measuring pi n 0216 001070 Needle h ol d er h ei g ht
Setting pin 0244 001014 Sidewa ys ho ok c l e ara nc e
Gauge 0246 000919 Clearance needle bar link to the needle bar
Gauge 0792 007677 Corner knife (NA = 16 mm)
Gauge 0792 007678 Corner knife (NA = 20 mm)
Replacement parts
The following replacement parts in the numbers listed are in the
accessories pack:
Center knife 1 0246 002553
Special bob bi n fo r th e 6 0246 003058
remaining thread monitor
745-22; -23
745-24
Corner knive s (N A = 8 mm) 2 0746 060693
2 0746 060694
or
Corner knive s (N A = 10 mm) 2 0746 060689
2 0746 060690
or
Corner knive s (N A = 12 mm) 2 0746 060691
2 0746 060692
or
Corner knive s (N A = 14 - 20 mm ) 2 0792 007217
2 0792 007217 a
Corner knive s (N A = 10 mm) 2 0746 000996
2 0746 000996 a
or
Corner knive s (N A = 12 mm) 2 0746 000997
2 0746 000997 a
or
Corner knive s (N A = 14 - 20 mm ) 2 0746 000998
2 0746 000998 a
4
2. T ransport Carriage
2.1 Rollers
The advance of the transport carriage occurs via a step motor.
Caution Risk of Injury !
Do not reach into the area of moving machine parts.
The transport carriage is guided on the extension pipes 2 by ball
sleeves on the left and by rollers on the right.
The rollers 1 are set tight at the factory.
12
Caution Risk of Injury !
Turn the main switch off.
Set the play o f the rollers 1 o nl y with the main s wi t c h t ur n ed off.
To remove play:
–
Remove the c o ver p l at e a ft er l o os e ning the mounting s c re w s.
–
Loosen
one
of the eccentrically bearinged rollers 1 and set tight.
5
2.2 Forward End Position
15 mm
1 2
switch b2
The
carriage.
In this posi ti o n t he c l ea ran c e f r om th e f or w ar d ed ge s of th e
forward-lyi n g n ee dl e s to th e f or w ar d ed ge s 2 o f t he tr a nsport clamps
must be 306 mm.
This corresp on ds t o a c l ea r an ce o f 1 5 m m f rom the forward ed ge s 2 o f
the transport clamps to the H-light marker 1 (see sketch).
switch b3
The
It prevents a possible striking of the transport carriage on the machine
head.
The clearance between the switches b3 and b2 must be 90 mm.
determines the forward end position of the transport
serves as a safety switch.
b3 b2
90 mm
2
Checking the switch setting
–
Turn the main switch on.
–
Step back on the left pedal.
The transpo rt c a r ri ag e r u ns i n to i ts r e ar e nd position.
–
Step forward on th e l e ft pedal.
The transpo rt c a r ri ag e r u ns i n to i ts f or w ar d en d p os i t i on .
It runs over the switch b2 (reference po s i ti o n) a l on g i t s pa th .
After a furt he r run of approx. 80 mm it stops in the f orward end
position.
–
Check the clearance of 306 mm from the forward edge of the
forward-lying needles to the forward edges 2 of the transport
clamps.
Correcting the switch setting
Caution Risk of Injury !
Turn the main switch off.
Correct the pos it i on of th e s w i tch es b2 and
switch turned off.
b3
only with the main
–
Remove the cover plate after loosening the mounting screws.
–
Set the switches b2 and b3 after loosen i ng th e c l a mp i ng sc r ew s .
–
Tighten the clamping screws again.
6
2.3 Rear End Position
switch b1
The
carriage.
Set switch b1 so that in the rear end position there is still a clearance
of 5 mm between the damper discs 1 and the transport carriage 2.
The surface 4 on the transport carriage must open the pneumatic
valve 3 when running into the rear end position.
With the main switch turned off and pneumatic valve 3 opened the
interlock of the cover hood and the cloth slider plate is released.
determines t he r ea r en d p os i t i on of the transport
1 2
34
Check the positions of the switch and the pneumatic valve
–
Turn the main switch on.
–
Step back on th e l e ft pedal.
The transport carriage runs into its rear end position.
–
Check the clearance dimension of 5 mm between the damper discs
1 and the tran spo r t c a rr i ag e 2 .
–
Check if the pneumatic va lv e 3 i s op en ed by t he s urface 2 on the
transport carriage.
b1
Correcting the positions of the switch and the pneumatic valve
Caution Risk of Injury !
Turn the main switch off.
Set the posit i on s of th e s w i tc h b1 and the pneumatic valve 3 only with
the main switch turned off.
–
Slide switch b1 after loosening the clamping screws.
–
Set pneumatic valve 3 so that it is opened by the surface 4 on the
transport carriage.
–
Tighten the clamp ing screws again .
–
Attach the cover plate.
7
2.4 Timing Belt Te nsion
At the middle of the belt section S the timing belt must bend in 13 mm
under the test l oa d F V = 500g.
S
{
Consequences of too high timing belt tension:
–
Reduced life
–
Running noises
Consequences of too low timing belt tension:
–
No flawless tooth interlocking between the belt teeth and the pulley
teeth
–
Jumping of the teeth under load
1
2
–
Attach the tes t loa d i n th e m i dd le t he ti m i ng be lt (e .g . with the aid
of a spring scale).
The timing belt is correctly tensioned when the upper half of the
belt just touches the lower half of the belt.
To correct:
–
Correct the ti mi n g bel t te ns i o n a t n ut 2.
The nut 2 is e qu i pp ed wi t h a s el f -l oc k i n g t hre ad.
8
2.5 Changing the Timing Belt
To simplify changing, the timing belt is split.
It is held together by the timing belt clamp 1.
3
4
Caution Risk of Injury !
Turn the main switch off.
Change the timi n g b el t on ly wi t h t he ma in s w i tc h tu rne d o ff.
Remove the old timing belt
–
Loosen the four clamping screws on the timing belt clamp 1.
–
After loos en i ng th e t i mi n g b el t c lamp 1 pull the ti mi n g b el t ou t o f
the housing 4.
Inserting the new timing belt
–
Push one end of the timing be l t t hr o ug h t he op ening 3 on the
timing belt p ul l e y of th e s t ep mo to r.
–
Carefully turn the timing belt pulley for placement of the timing belt
with a suitable tool.
The timing be l t p ul l e y i s ac cessable throug h t he opening 3.
–
To connect the two timing belt ends slacken the timing belt tension
a little at nu t 2.
–
Join the tw o t i mi n g b el t en ds w i th th e t i mi n g b el t c lamp 1.
–
Set the timi ng be lt tension (see Chap te r 2. 4).
9
3. Folder
For the unimpaired transport of the material and a flawless fabrication
of the pocket o pening, the fold i ng an d c u tt i ng to ol s , as w el l a s th e
marker light s , m us t be al i g ne d t o t he c en te r of th e p oc k e t o pe ni n g.
The incision of the center knife is seen as the center of the pocket
opening.
The measurem en t l in e 2 was traced on th e machine plate at th e
factory.
It runs parall e l to th e c e nt er o f t he po c k et op en i ng , t hat is, to the
center knif e i n ci s i on at a c l e ara nc e of 12 5 m m.
By proper mounting of the fol de r 1 i t c an be al igned from the
measurement l i n e t o t he c en te r of th e p oc k e t o pe ni n g
(see Chapter 3. 2) .
1
2
Proper mounting of the folder:
–
The folder 1 is p us h ed up on to the clamping piece 5 until it to uch es .
–
The pin 3 catc h es i n s l ot 4.
3
4
5
1
10
3.1 Stroke Movement of the Folder
6
10
7
11
8
9
12
13
Caution Risk of Injury !
Turn the main switch off.
Set the stroke movement of the folder only with the main switch turned
off.
With the folder raised:
There must be a safety clearance of 3 mm between the lever 13 and
the bottom of the curve piece 12.
–
Loosen nut 6.
–
Set the mounting of the cylinder 7 higher or lower accordingly.
–
Tighten nut 6.
With the folder lowered:
The clearance between the folder sole and the cloth slider plate must
be 2 mm along the wh ol e l engt h.
–
Loosen nut 10.
–
Set the clearance between the bottom of folder sole and the cloth
slider plate by turning the piston rod of the cylinder 7.
–
If the roller lays on in the lowest point of the curve path 8:
Loosen screws 11.
Set the curv e p i ece 12 lower.
11
–
Loosen clamp i ng s cr ew 14 .
–
Turn the folder slig htly on the axle 15.
There must b e a un i fo rm c l e ar a nce between the fo l de r s ol e an d t he
cloth slider plate along the whole length.
–
Tighten clamping s c rew 14 and nut 10.
–
In the lowest p osi t i on of th e f ol d er s e t t he cur ve pi e c e 1 2 a s
follows:
There must b e a c l ea rance of 0.5 mm between the rolle r and the
lowest point of the curve path 8.
–
Tighten screws 11.
Proximity switches b4 and b5
The proximity switches b4 and b5 monitor the t w o en d p os itions of the
folder.
Switch b4: Monitoring of the upper folder position
switch b5: Monitoring of th e l o we r fol de r po s iti o n
The checking of the correct switch settings occurs in program
–
–
–
–
–
–
–
14 15
P63
Turn the main switch on.
Set the "
Press the "
The program i s ac t i vated.
Set the "
The display shows the switching status "-" or "+".
Loosen the mounting screws on the switch b4 or b5 slightly.
Align switch b4 and b5 to the roller i n th e c o r res p on di n g f ol d er
positions. The display must show the switching status "+".
Tighten the mounting screws of the switch again.
Program
STOP
Program
" switch to "63".
" key
" switch to "4" (switch b4) or "5" (switch b5).
11
:
b4
12
12
8
b5
10
16
3.2 Aligning the Folder to the Center of the Pocket Openi ng
When properly mounted the folder can be aligned from the
measurement line 17 to the center of the pocket opening.
Dependent on the width of the folder sole 19 the dimension x can be
establishe d. W i th th e a i d o f t hi s d i me ns io n the folder can be ali g ne d to
the center of t he pocket openi ng 18 an d p ar a l lel t o the measuremen t
line 17.
18
17
19
–
Subtract th e p i pi n g w i dt h a and half of the
needle clearance NA from the dimension 125 mm.
Example f rom the sketch : 12 5 mm - a - 1/2 x NA x
125 mm - 5 mm - 1/ 2 x 1 2 m m = 114 mm
Piping widt hs a nd ne edle clearance s fo r ot her folders can be fo un d
in the Operating Instructions.
Caution Risk of Injury !
Turn the main switch off.
Align the folder to the center of the pocket opening only with the main
switch turned off.
–
Loosen screws 16 slightly.
–
Align the folder sole parallel to the measurement line 17 with the
aid of a measur i n g s t i ck .
–
Tighten screws 16.
–
Loosen clamping screw 14 slightly.
–
Set the clearance x (in the examp l e x = 114 mm) betwee n
measurement l i n e 1 7 a nd th e l e ft ed ge of the folder so le 19.
For this slide the folder sideways.
–
Tighten clamping screw 14.
13
3.3 Position of the Folder to the Needles and the Center Knife
With a properly mounted folder the following positions must be
attained:
–
In the most forward position the needles must enter the needle
holes of the folder sole unhindered (without being deflected).
–
When the center knife 1 enters the knife guard 2 in the most
forward position there must still be a clearance of 0.5 to 1 mm
between the front edge of the knife and knife guard.
0,5 - 1 mm
1
2
3
Caution Risk of Injury !
Turn the main switch off.
Align the fol d er t o t he ne ed l es a nd th e c e nt er k n if e on l y wi t h t he main
switch turned off.
To correct:
–
Loosen screws 3 slightly.
–
Slide the fol d er i n th e d i rec t i on of tr a ns p ort .
–
Tighten screws 3 ag ai n .
14
3.4 Guide Plates on the Folder
With the needle bar link in the most forward position the edges 2 of the
guide plate s mu s t e x te nd ap pr o x . 1 mm to th e r e ar b ey o nd th e n ee dl e s .
The leaf springs 1 hold the guide plates down on the folder sole with a
slight pressure.
The pressure must so dimensioned that the sprung guide plates can
be easily raised by the piping strip running in or by the flap.
1
2
1 mm
Caution Risk of Injury !
Turn the main switch off.
Correct the pressure of the leaf springs only with the main switch
turned off.
To correct:
–
Set the pres s ure by a dj u s ti n g t he l ea f s p r ing s 1.
15
4. Clearance of the T ransport Clamps to the Folder Sole
There must be a certain cleara nc e be tw ee n t he outer edges 2 of t he
folder sole and the inner edges 1 of the transport clamps. By medium
weight cloth for ready-made clothes it must be e.g. 1 to 1.5 mm.
The clearance is necessary in order to assure uniform piping widths on
both sides an d a n u nh i nd er e d t r an sport of the mater i al.
4.1 Manual Adjustment of the Transport Clamps (745-22)
With the
the Allen screws 6.
With the
The scale plates 8 serve as setting aids.
–
–
–
ATTENTION !
The markings on the scale plates 8 are matched to the needle
clearance of the machine head.
When attaching need le holders for other needle clearances the scale
plates 8 must al s o be r ep lac e d.
745-22
745-23
To set th e c lea r an c e tu rn the Allen screw 6. To turn use the socket
wrench 5 to be found in the acc ess o r i es p ac k .
The scale plates 8 were aligned at the factory as follows:
When the poi n te r 7 p oi n ts t o t he marking "I" the correct clearance
for sewing medium weight material of two-sided piped pocket
openings is set.
The second marking gives the clearance for sewing a greater
piping width or a one-sided piped pocket opening.
By stepping fo r wa r d o r ba c k on th e l e ft pe da l c on du c t t es t run s
with the tr an spo r t c a rr i ag e.
The transport clamps must pass the guide plates 4 and the thread
catcher 3 unhindered.
745-24
and
only the rig ht tr a ns p ort clamp is set m an ually.
both transpor t c l am ps a re s e t by turning
Pneumatic qu i ck cl amp adjustment
By frequent changes of the folder between single and dual piping the
pneumatic qui c k cl a mp ad j us t me nt s i mp l i fi e s the setting of th e
transport cl am ps .
With the
clamp adjustment as standard equipment (Description see
Chapter 4.2).
With the
(Order no. 792 00 5981).
745-23
745-22
the left trans p or t c lam p has the pneumati c q ui ck
745-24
and
it is available as option al e qu i pm en t
16
12
5
34
6
7
8
17
4.2 Pneumati c Quick C lamp Ad justm ent (7 45-23)
With the
clamp adjustment as standard equipment.
When changing the the folder between single and dual piping the left
transport clamp correctly sets itself automatically.
The clearance between the outer edges 2 of the folder sole and the
inner edges 1 of the lowered transport clamps is dertermined as
follows:
–
–
Caution Risk of Injury !
Turn the main switch off.
Set the quick c l a mp ad j us t me nt on l y wi t h t he ma i n switch turned off.
Folder for dual piping
Presetting :
The clearance between clamp arm 7 and clamping piece 5 must be
approx. 3 mm wi t h t he pi s t on r od 8 f ul l y e x te nd ed .
–
–
745-23
For dual piping by the position of the cylinder 9 with air.
For single piping by the position of the stop 6.
Insert the fol d er f or dual piping.
The extended pi n 3 o pe r at es t he v al ve 4 for the quick c l am p
adjustment.
The correct c learance of the tra ns p or t c l am ps to the folder s ole i s
automatically set.
Slide the tr an s po rt c a r ri ag e m an ua l l y un ti l t he tra ns p or t c l am ps l i e
at the level of the folder sole.
the left trans p or t c l am p h as t he pneumatic qui ck
–
Loosen clamp i ng s cr ew 10 .
–
Set the clearance between the folder sole and the inner edges of
the lowere d t ran s po r t cl a mp s by s li d i ng th e c y l inder 9.
–
Tighten clamping s c rew 10.
Folder for single piping
–
Insert the fol d er f or s i n gl e pi p i ng .
–
With the quick clamp adjustment vented and touching the stop 6
check the clearance dimension of 1 to 1.5 mm between the
transport clamps 1 and the folder sole 2.
To correct:
–
Loosen the clamping screws on the stop 6.
–
Slide the st op 6 i n th e a pp r op r iate direction.
–
Tighten the clamping screws again.
18
12
3 4
5 6
7 8 9 10
19
5. Marker Lights
1 2 3 45
The light markers 2 and 4 limit the sewing area.
Alternatively a 3rd marker light, available on request, can be attached
(Order no. 793 02 20 68 ) .
The multiple masks built into the lamp optics make possible the
following application:
–
Because of th e s m al l H - li gh t markers a clear a nc e of 10 mm
between che s t d art and flap edge c an be ac h i ev e d i n th e
positioni ng of j ac k e t f ron ts .
By setting the marker lights higher the clearance can be increased
to a maximum of 15 mm.
–
Turn the marker light 90°.
Clearances f r om 15 mm to a m ax i m um of 25 mm c an be s et by
setting the l a rge H-l i g ht ma rk er h i gh er o r l ow er.
10
111
1
: Needles
2
: Light mark er -f or w ar d po s i tio ni n g p oi n t
3
: 3rd marker l i g ht ( on req ue s t)
After setting the marker lights higher or turning them it is essential that
the following points be observed:
–
Reset the lamp ho l der.
–
Align the li g ht ma r ker s congruent to the c e nt er o f t he po c k et
opening.
–
Keep to the maximum sewing area.
10
180
125
6
4
: Light marker-rear positioning point
5
: Center of the po c ket op en i ng
6
: Measuremen t l i n e
20
Focusing the light markers sharp
–
Loosen clamp i ng s cr ew 13 s l i gh tl y.
–
Focus the lig ht marker sharp by s e tt i ng th e t ub e 1 4 higher or lower.
–
Tighten clamping s c rew 13.
10
11
7 8 9
12
13
14
Aligning the light markers
All light markers must be aligned to the cutting line (center of the
pocket openi ng 5) .
The clearance between the lengthwise lines of the H-light markers and
the measurement line 6 must be 125 mm.
–
Loosen the clamping screws 8 of the lamp holder 12 slightly.
–
Set the lam ps h i gh er o r lower in the lamp ho l de rs 12 .
There must be a cl e ar a nc e of 10 mm be tween the crosswise lines
of the small H-light marke r ( s ee sk et c h) .
–
Turn the lamps in the lamp holders 12.
The crosswise line of the H-light marker must lie parallel to the
measurement l i n e 6 .
–
Tighten clamping screws 8.
–
Loosen the cl a mp i ng s c rews 11 on the hold er block 10 slig ht l y.
–
Set the clearance of the light markers to the measurement line 6
by pushing in or pulling out the lamp holder 12.
–
Tighten clamping screws 11.
–
Loosen clamping screws 7 slightly.
–
Slide the ho l de r bl o c k 10 on the support axle 9.
The clearances to be set between the light marker and the
forward-lyi n g n ee dl e s are to be found in the s k e tc h .
–
Tighten clamping screws 7.
21
2 4
111
10
180
125
Check the exact position of the light markers
Light marker 2 (seam beginni ng ) :
–
Set the " " key on the front panel of the control unit to
"Positioning point-forward".
The LED above the key is lit.
–
Designate the desired seam beginning with a chalk mark on the
sewing piece.
–
Position the s e wi n g p iec e wi t h t he cha l k ma rk on th e f orw ar d
crosswise line of light marker 2.
–
Start the sew i ng pr o c ed ure .
The seam must begin on the chalk mark.
–
To corr ec t : R ea l i gn ma r ker l ight 2 after loos e ni n g i t s holder.
10
Light marker 4 (seam end):
–
Set the " " key on the front panel of the control unit to
"Positioning point-rear".
The LED above the key is off.
–
Make an analog ous check of the a l i gn me nt of the light mar ker 4 fo r
the seam end.
22
6. Knife Brackets for the Cutting of the Corners
Caution Risk of Injury !
Do not reach into the area of the corner knives.
The rapidly rising corner knives can cause serious cuts.
Presetting:
The clearance between the cutting edges of the corner knives in the
knife bracke t " s e am en d" a nd th e f or w ar d - ly i ng ne ed l es m us t be
130 mm
(745-22;-23)
or 135 mm
(745-24)
(see sketch).
ca. 1-2 mm
130 mm (
135 mm (
The measuring and setting is to be made at the w i de s t p oi n t o f t he
corner knife with the knife bar raised.
–
Tilt the machine he ad to the back.
–
Set the clea r an c e d i me nsi o n o f 1 30 mm by t urn i ng th e s t op
screw 1 (
2 are in the ar ea un de r th e h oo k s.
–
The knife incisions must end at the seam beginning before the first
and at the seam end before the last stitch (see sketch).
This corresp on ds t o t he front edge of th e f l ap an d the rear edge of
the flap with the flap sewn on.
745-22 and 745-24
745-22;-23
745-24
) or 2 (
)
745-23
)
). The stop screws 1 and
745-22, 745-24: 745-23:
1
2
23
6.1 Adjusting the Position of the Corner Incisions
–
Call up the lo ng est s ew i ng di st an c e (e .g . 1 50 mm ) with the L1 key
on the front pa ne l of th e c o nt rol u ni t .
–
Conduct a trial s e am .
It is useful to first iron a piece of nonwoven fleece onto the sewing
piece. This shows the corner incisions well.
–
Check the seam and cut patterns.
–
To correct: Make the following settings.
Presetting:
–
Set the corr ect i on v al u es f or s e am be gi n ni n g ( N A ) an d seam end
(NE) to the m ed i an v al u e 5 0 (n o c o r rec t i on )
(see Short De sc r ipt i on Mu l tic o nt r ol) .
Caution Risk of Injury !
Turn the main switch off.
Adjust the position of the corner incisions only with the main switch
turned off.
Adjusting the corner incision of the knife bracket "seam
beginning"
The knife bracket "seam beginning" must cut up to
stitch (see sketch).
–
745-22;-24:
745-23:
–
Set the position of the corner incision at the seam beginning by
sliding the knife bracket 2.
–
Tighten clamping l ev e r 3 or screw 5 agai n.
Loosen the clamping lever 3.
Loosen screw 5 .
in front of
the first
745-22; -24:
Adjusting the corner incision of the knife bracket "seam end"
The knife bracket "seam end" must cut up to
–
If necessary, correct the corner incisions of the knife bracket
"seam end" a t s t op s c rew 1 (
745-22; -24
1
745-23:
2
in front of
) or 2 (
745-23
the last stitch.
).
24
Loading...