Adler 745-34-2 Instruction Manual

Manual, complete

745 - 34 - 2

Sewing unit for runstitching of piped flap

and welt pocket openings and pocket corners

Working methods: A, B, D, F

Operating Instructions

Installation Instructions

Service Instructions

Instructions for Programming DAC

Postfach 17 03 51, D-33703 Bielefeld • Potsdamer Straße 190, D-33719 Bielefeld Telefon + 49 (0) 5 21 / 9 25-00 • Telefax + 49 (0) 5 21 / 9 25 24 35 • www.duerkopp-adler.com

Ausgabe / Edition: 02/2005 Printed in Federal Republic of Germany Teile-Nr./Part.-No.: 0791 745181

745 - 34 - 2

Manual, complete

Contents

Operating Instructions

Installation Instructions

Service Instructions

Instructions for Programming DAC

Interconnection-diagram

9870 745154 B

9890 745002 B

Pneumatic circuit plan

9770 745005

Index Page:

Foreword and general safety instructions

Part 1: Operating Instructions 745-34-2

1. Product Description

1.1 Description of proper use ........................................ 5

1.2 Briefdescription............................................. 5

1.3 Technicaldata .............................................. 7

1.4 Optional equipment ........................................... 8

2. Operation

2.1 Swingingthefoldingstationaside................................... 11

2.2 Pushing the covering hood back and removing the fabric sliding sheet ............ 12

2.3 Tilting the machine head up ...................................... 15

2.4 Needles and threads .......................................... 16

2.5 Threading the needle thread ...................................... 19

2.6 Winding the hook thread ........................................ 20

2.7 Remainingthreadmonitor ....................................... 21

2.8 Changing the bobbins .......................................... 22

2.9 Threadtension.............................................. 24

2.10 Stackingcontrol ............................................. 25

2.11 Slantedpocketcorners......................................... 26

2.11.1 Swingingthecornerknifestationout/in .............................. 27

2.11.2 Setting the corner knives (Manual corner knife station) ...................... 28

2.12 Referenceposition-Startingthesewingcycle-Quickstop................... 30

2.13 Flapandpipingprojection ....................................... 31

2.14 Piping strip length ............................................ 32

2.15 Working methods............................................. 33

2.15.1 Working method A (Production of trousers) ............................. 34

2.15.2 Sewingwithflap ............................................. 37

2.15.2.1 Sewing without light barrier ...................................... 37

2.15.2.2 Sewingwithlightbarrier ........................................ 39

2.15.3 Working method A (Production of jackets)

Piped pockets, manual positioning of piping strip, flaps and other additional parts ..... 40

2.15.4 Working method B Piped pockets, automatic feed of the piping strip, without/with incision of the

piping ends ................................................ 46

2.15.5 Working method D

Breastweltpockets,automaticfeedandmatchingofthebreastwelt ............. 56

2.15.6 Working method F Piped pockets, automatic feed of the piping strip,

incision of the piping ends, matching and feed of the flap .................... 62

2.15.7 Foldermonitoring ............................................ 66

2.16 Functions and Operation of the optional equipment ........................ 67

2.16.1 Automatic incision device for piping ends .............................. 67

2.16.2 Downholder, pocket bag and waistband clamp ........................... 70

2.16.3 Feeding devices for flaps, pocket bags etc. ............................. 71

Index Page:

2.16.4 Throw-overstacker ........................................... 72

2.16.5 Roll-offdevice .............................................. 74

2.16.6 Blow-outdevice ............................................. 75

2.16.7 Bundle clamp and roll-off device ................................... 76

2.16.8 Tapefeedandautomaticcutting.................................... 77

2.16.9 Endless zipper device .......................................... 80

2.16.10 Vacuumdevice.............................................. 82

2.16.11 WorkingmethodBwithsetofparts“Pocketbagonflap” .................... 83

2.16.12 Zipper feeders for method B ...................................... 86

2.16.13 Set of parts “Shaped guide Lining loop triangle” for 745-34-2 methods B and F ....... 87

2.16.14 Smoother for 745-34-2 A and B .................................... 88

3. Maintenance

3.1 Cleaning .................................................. 88

3.2 Weeklylubrication............................................ 91

1. Product description

1.1 Description of proper use

The 745-34-2 is a sewing unit which can properly be used for sewing light to medium-weight material. Such material is, as a rule, material made of textile fibres or leather. These materials are used in the garment industry.

In general only dry material should be sewn on this machine. The material must not contain any hard objects.

The seam is generally made with core thread, polyester fibre or cotton threads. The dimensions for needle and hook threads can be taken from the table in chapter 2.4.

Before using any other threads it is necessary to estimate the consequential dangers and to take the respective safety measures, if required.

This sewing unit must only be installed and operated in dry and well-kept rooms. If the sewing unit is used in other rooms, which are not dry and well-kept, further measures to be agreed upon may become necessary (see EN 60204-31 : 1999).

We, as a manufacturer of industrial sewing machines, assume that at least semi-skilled operating personnel will be working on our products so that all usual operations and, where applicable, their risks are presumed to be known.

1.2 Brief description

The Dürkopp Adler 745-34-2 is a sewing unit for automatic runstitching of piped, flap and welt pocket openings with rectangular or slanted pocket c orners.

The slanted pocket corners result from the seam offset of the two seam rows. At the seam beginning and seam end it is possible to sew with different slants.

Dependent on the working method different feeding devices, corner knife stations and optional equipment are used.

Machine head

–

Twin needle lockstitch version

–

Needle bars can be switched separately or together

–

Large vertical hooks

–

Externally driven center knife, speed and circuit timing programmable

–

Thread trimming device for needle and hook threads

–

Needle thread monitor

–

Photoelectric remaining thread monitor for the hook threads

–

Sewing drive as DC direct drive

Step motors for the material feed and the length adjustment of the corner cutting device

The step motor technology results in short machine times and guarantees an absolutely precise corner incision. Thus, it contributes to a pocket quality as yet unequalled and combined with high productivity.

New generation of “ DAC III” controls (DÜRKOPP ADLER Control)

The graphic user guidance exclusively occurs via internationally comprehensible symbols and text lines in the corresponding language. The various symbols are combined in groups within the menu structure of the s ewing and test programs. The ease of use makes short training times possible.

The user can combine 99 freely programmable pocket programs with up to 20 seam patterns. 20 pocket s equences can be called up. Every pocket sequence can be combined of up to 8 pocket programs in any order whatever.

All slants suitable for practical application can be programmed by the operator at the touch of a button. The time-consuming adjustment of the corner knives and the tiresome programming of seam offsets are not required.

The comprehensive test and monitoring system MULTITEST is integrated in the DAC. A microcomputer does the control tasks, monitors the sewing cycle and signals operating faults and malfunctions on the display.

Optional equipment

By means of a flexible system o f optional equipment the sewing unit can be equipped optimally and economically corresponding to the respective application. See chapter 1.4 (Equipment of the 745-34-2).

Sewing equipment and folders

Data concerning the sewing equipment and folders for the various applications can be taken from the Equipment Sheets of c l. 745-34. Please direct your enquiries to the DÜRKOPP-ADLER sales offices.

1.3 Technical data

Machine head: Class 0246 992002 Needle system: 2134-85 Needle distance: 10, 12, 14, 16, 20, 24, 26, 30 mm Needle size: Nm 80 to Nm110

Threads: see table chapter 2.4

Stitch type: Twin needle lockstitch

Speed: min. 2000 rpm

max. 3000 rpm Stitch length: min. 2.0 to 3.0 mm Number of stitches/condensed

stitches: 1 - 10 stitches Number of stitches/bartack

stitch: 0 - 5 stitches Stitch length condensed

stitches / bartack: 0.5 - 3.0 mm

Pocket length: max. 220 mm Seam offset: max.

/- 13 mm

Operating pressure: 6 bar Air consumption: approx. 6 NL per work cycle

Rated voltage: 3 x 230 / 400 V / 50/60 Hz

Rated load:

Machine with vacuum blower 0,8 KW

Machine without vacuum blower 0,5 KW

Dimensions: 1540 x 925 x 1200 mm (L x W x H) Working height: 790...1100 mm

(upper edge of table top)

Weight: 280 kg

Rated noise level: LC = 81 dB (A)

Workstation-specific emission value

according to DIN 45635-48-B-1

Stitch length: 2.5 mm

Seam length: 180 mm

Speed: 2750 rpm

Material: double fabric

240 g/m

Measuring point according to DIN

4895 Part 1

X = 600 mm Y = 0 mm Z = 300 mm

1.4 Optional equipment

Order No. Optional equipment A B D F

0745 597514 Downholder- pocket bag clamp

Downholder for smoothing the fullness caused by darts as well as a clamping device for pocket bags

0745 597524 Waistband clamp

For smoothing the fullness. Only possible in conjunction with 0745 597514

0745 597544 Endless zipper

Scissors with roll-off device for endless zippers without slider

0745 597554 Throw-over stacker

To be positioned near the machine for stacking to the side or to the back. Furthermore, this throw-over stacker is equipped with an easy-to-operate height adjustment and a swivel device.

0745 597604 Blow-out device

For blowing the finished workpieces out

0745 597614 Shaped guide “Lining loop triangle”

In case of inside pockets the lining loop triangle

is fed automatically.

0745 597674 Table extension (large)

The table extension required for the working method with bundle clamp carriage

XXXX

0745 597684 Table extension (small)

Tableextensiontobeusedforstackingtotheside

0745 597694 Bundle clamp

This includes the required large table extension

0745 597764 Right zipper feeder

In conjunction with feeding device 0745 517574 For cut-to-length zippers, without slider, total width 24 mm, chain width approx. 4 mm, in case of ready-made pocket chain inside.

0745 597774 Left zipper feeder

In conjunction with feeding device 0745 517564 For cut-to-length zippers, without slider, total width 24 mm, chain width approx. 4 mm, in case of ready-made pocket chain inside.

0745 597784 Right zipper feeder

In conjunction with feeding device 0745 517574 For cut-to-length zippers, without slider, total width 24 mm, chain width approx. 4 mm, in case of ready-made pocket chain inside.

0745 597794 Left zipper feeder

In conjunction with feeding device 0745 517564 For cut-to-length zippers, without slider, total width 24 mm, chain width approx. 4 mm, in case of ready-made pockets chain inside.

XXXX

Order No. Optional equipment A B D F

0745 597824 Smoother for the 745-34-2 A/B

The smoother has the purpose to smooth the finished workpiece held by the bundle clamp. Only in combination with the table extension 0745 597674 and the roll-off device 0745 597954.

0745 597874 Set of parts “Pocket bag on flap” NA 10 and 12

for the simultaneous attaching of two pocket bag halves and flap. Combination only in conjunction with equipment E 3103 or E 3503 for NA 10 as well as E 3107 or E 3507 for NA 12.

0745 597884 Set of parts “Pocket bag / Piped pocket”

for the blowing of the pocket bag or the piping pocket with equipment E 2604 or E 2606. Use only in combination w ith the clamp K19.

0745 597934 Three-pack lasers

Add-on kit: for expanding the existing 5 laser marking lamps to a maximum of 8 laser marking lamps. (With the working method F, the standard equipment includes 8 laser marking lamps).

0745 597944 Electromotoric tape feed/Automatic cutting

Automatic feeding and cutting of a reinforcement strip pulled from a roll. Start time and cutting time can be programmed corresponding to the pocket.

XXXX

0745 597954 Roll-off device

It is used to for transporting short pieces into the stacker or to eject the pieces to be processed. The speed and the working cycle of the roll-off device can also be programmed.

0745 597964 Vacuum (side channel compressor)

For an accurate positioning of the material when no in-house vacuum unit is available. The side channel compressor can be used with the basic unit.

0797 003031 Pneumatic connection package

Connection hose to the pneumatic supply line with the appropriate couplings.

0745 517564 Automatic feeding, left 180 - 220 mm

For the automatic feeding of piping strips and additional parts.

0745 517574 Automatic feeding, right 180 - 220 mm

For the automatic feeding of piping strips and additional parts.

XXXX

2. Operation

2.1 Swinging the folding station aside

For operations at the sewing point (threading the needle threads, needle change etc.) the whole folding station with folder and light barriers can be swung to the right.

–

Swingthecompletefoldingstation1withfolder to the right.

Note:

With the sewing unit switched on, a safety message appears on the screen of the control panel.

Folding station swung out

–

The sewing point is freely accessible.

Swinging the folding station back

–

Swing the folding station back.

ATTENTION!

After being swung back the folding station must lock in the catch 2.

2.2 Pushing the covering hood back and removing the fabric sliding sheets

Caution: Danger of injury!

Switchthemainswitchoff. Push the covering hood back and remove the fabric sliding sheet only with the sewing unit switched off.

–

Switchthemainswitchoff

For a better accessibility of the feeding clamps the covering hood can simply be displaced.

Pushing the covering hood back

–

Push the covering hood 1 to the left. The feeding clamps are accessible.

–

Push the covering hood 1 to the right again until you hear it snapping in.

For changing the hook thread bobbins: –

Lift the fabric sliding sheet 2 in the area of pin 1 and swing it to the left.

For a complete removal (for maintenance and adjusting operations): –

Lift off the fabric sliding sheets at the pin 3.

2.3 Tilting the machine head up

For maintenance work the machine head can be tilted up. For this purpose the transport carriage must be in its rear end position.

Caution: Danger of injury!

Switchthemainswitchoff.

Tilting the machine head up.

–

– – – –

Swinging the machine head back

– – –

Remove the covering hood 1. For this purpose lift the covering hood at the front so that the catch is released. Carefully lift the covering hood upwards.

Swing the folding station 3 out by 90°. Swivel the locking lever 4 up. Lift the left fabric sliding s heet 6 at the front and swing it to the left. Lift the machine head in the area of head cover 5 and tilt it up

carefully. Pawl 2 snaps in additionally. The space under the machine table is accessible for cleaning now.

Hold the machine head tight in the area of head cover 5. Release the pawl 2. Swing the machine head back carefully.

Caution: Danger of breakage!

Hold the machine head tight until it is at rest completely.

–

Insert the fabric sliding sheets.

–

Swivel the locking lever 4 down.

–

Swing the folding station 3 back and let it catch with the locking lever.

–

Put on the covering hood 1 and let it catch again.

2.4 Needles and threads

Needle system: 2134-85 Recommended

needle size: Nm 90 for thin material

Nm 100 for medium-weight material Nm 110 for heavy-weight material

High sewing security and good sewability are achieved with the following core threads:

–

Two-ply polyester endless polyester core-spun (e.g. Epic Poly-Poly, Rasant x, Saba C, ...)

–

Two-ply polyester endless cotton core-spun (e.g. Frikka, Koban, Rasant, ...)

If these threads are not available, the polyester fibre or cotton threads listed in the table can also be sewn.

Often two-ply core threads are offered by the thread manufacturers with the same designation as three-ply polyester fibre threads (3cyl.-spun).This causes uncertainty with regard to twisting and thread thickness.

When in doubt, unravel the thread and check whether it is twisted 2- or 3-ply. The label no. 120 on the thread reel of a core thread corresponds e.g. to the thread size Nm 80/2 (see table values in brackets).

In case of monofilament threads you can use needle threads and hook threads of the same thickness. The best results are achieved with soft and elastic threads (software) of the thread thickness 130 Denier.

Recommended thread sizes:

Needle size Core thread Core thread

Needle thread Hook thread Needle thread Hook thread

Polyester Polyester Polyester Cotton

endless core-spun endless core-spun

Label No. Label No. Label No. Label No.

90 120 (Nm 80/2) 120 (Nm 80/2) 120 (Nm 80/2) 120 (Nm 80/2)

100 100 (Nm 65/2) 100 (Nm 65/2) 100 (Nm 65/2) 100 (Nm 65/2)

110 75 (Nm 50/2) 75 (Nm 50/2) 75 (Nm 50/2) 75 (Nm 50/2)

Needle size Polyester fibre thread Cotton thread

Nm (3cyl.-spun)

Needle thread Hook thread Needle thread Hook thread

90 Nm 80/3-120/3 Nm 80/3-120/3 Ne

100 Nm 70/3-100/3 Nm 70/3-100/3 Ne

110 Nm 50/3-80/3 Nm 50/3-80/3 Ne

50/3-70/3 NeB50/3-70/3

40/3-60/3 NeB40/3-60/3

40/4-60/4 NeB40/4-60/4

Changing the needles

Caution: Danger of injury!

Switchthemainswitchoff. Change the needles only with the main switch switched off.

Risk of injuries from cuts!

Do not reach into the area of the center knife 3 when changing the needles.

–

Swing the folding station aside (see chapter 2.1) The needles are freely accessible.

–

Loosen screw 2 and remove the needle from the needle holder 1.

–

Push the new needle into the drill-hole of the needle holder 1 as far as it will go.

ATTENTION!

Seen from the operator ’s side the hollow groove 4 of the left needle must point to the left and the hollow groove 5 of the right needle must point to the right (see sketch).

–

Tighten screw 2.

ATTENTION!

After changing to another needle size the needle protection on the hook has to be readjusted (see Service Instructions).

Note:

The standard needle size of class 745-34-2 is Nm 100.

12 11

2.5 Threading the needle thread

Caution: Danger of injury!

Switchthemainswitchoff. Thread the needle threads only with the sewing unit switched off.

The threading of the needle threads is done in ascending numerical order as shown in the illustrations opposite.

–

Left needle

– –

– – – –

– – – – – –

Swing the folding station aside

Put the thread reel on the thread reel holder. Thread the thread from the thread reel through the drill-hole 1 of

the thread reel holder. Guide the thread through guide 2. Guide the thread through the drill-hole in the support plate 3. Guide the thread through guide 5. Guide the thread through the tension discs of the needle thread

tension 6. Guide the thread through the thread controller spring 8. Guide the thread through the upper drill-hole in the support plate 10. Thread the thread through the upper drill-hole in the thread lever 17. Guide the thread downward through the thread puller 16. Thread the thread through guide 15 and the needle thread monitor 14. Thread the thread through guide 12, through the drill-hole in the

needle holder and through the eye of the needle.

Right needle

–

Put the thread reel on the thread reel holder.

–

Thread the thread from the thread reel through the drill-hole 1 of the thread reel holder.

–

Guide the thread through guide 2.

–

Guide the thread through the drill-hole in the support plate 3.

–

Guide the thread through the tension disc of the needle thread tension 4.

–

Guide the thread through the guides 5 and 7.

–

Guide the thread through the thread controller spring 9.

–

Guide the thread through the lower drill-hole in the support plate 10.

–

Thread the thread through the lower drill-hole in the thread lever 17.

–

Thread the thread downward through the thread puller 16, through guide 15 and through the needle thread monitor 11.

–

Thread the thread through guide 12, through the drill-hole in the needle holder and through the eye of the needle.

–

Clamp the thread in the needle thread catcher and cut it off

2.6 Winding the hook thread

The external winder makes it possible to wind the hook threads independent of the sewing operation.

–

Remove remaining thread from the bobbin hubs before w inding.

–

Put the thread reel on the thread reel holder.

–

Thread the thread through the drill-hole 1 of the unwinding arm (see picture on the left).

–

Guide the thread through guide 4.

–

Guide the thread through the bobbin thread tension 2.

–

Prewind the thread to the right in the front and back reserve grooves of the bobbin hub. The full r eserve grooves guarantee a secure w inding, even with monofilament threads. With the thread reserves in the reserve grooves the pocket opening can safely be finished after the remaining thread monitor has indicated that the bobbin is empty. The reflecting surface 5 of the bobbin hub is to be kept clean.

–

Press the bobbin retainer 3 against the bobbin hub. The winder starts. After reaching the set bobbin filling level the winder shuts off automatically. See Service Instructions for setting the bobbin filling level.

2.7 Remaining thread monitor

The remaining thread monitor monitors the left and right hook thread bobbin with the infrared reflected light barriers 1 and 2.

–

When the bobbin is empty, the light beam transmitted by the light barrier 1 or 2 is reflected by the exposed reflecting surface 3 of the bobbin hub.

–

The display of the control box shows the message

“Empty bobbin”.

–

The pocket opening is safely finished with the thread in the reserve groove of the bobbin hub. The transport carriage stops in its rear end position.

Caution: Danger of injury!

Switchthemainswitchoff. Clean the lenses of the light barriers only with the sewing unit switched off.

–

Switchthemainswitchoff.

–

Clean the lenses of the light barrier with a soft cloth after every bobbin change.

–

Switchthemainswitchon.

–

Start a new sewing cycle.

2.8 Changing the bobbins

123 4

ATTENTION!

Switch the main switch off before changing the bobbin.

–

After a certain number of seams the hook thread quantity on the bobbin is used up.

–

With the remaining thread monitor switched on the message “Empty bobbin” appears in the display.

–

The pocket opening in progress is finished with the help of the thread reserve in the reserve grooves of the bobbin hub.

–

After corner incision the workpiece is moved out or stacked.

–

The transport carriages runs to its rear end position. It can be restarted after the bobbin change only.

Removing the empty bobbin

–

Switchthemainswitchoff.

–

Swing the folding station aside.

–

Lift the fabric sliding sheet and swing it away to the left and to the right (see chapter 2.2).

–

Lift the upper part of the bobbin c ase in the area 2. Thereby the bobbin case retainer 3 is lifted, too.

–

Remove the upper part of the bobbin case together with the empty bobbin.

–

Remove the empty bobbin from the upper part of the bobbin case.

Inserting a full bobbin

–

Insert a full bobbin in the upper part of the bobbin case 2.

–

Pull the thread through the slit 5 under the tension spring 6.

–

Pull the thread out of the upper part of the bobbin case for a length of approx. 4 cm. When the thread is being pulled off, the bobbin must turn in the direction of the arrow ( counter to the hook rotation).

–

Insert the upper part of the bobbin case 2 with the full bobbin in the

lower part of the bobbin case.

–

Close the bobbin case retainer 3.

ATTENTION!

For a trouble-free function of the remaining thread monitor clean the lenses of the light barriers 1 and 4 with a soft cloth after every bobbin c hange.

–

Put the fabric sliding s heets on again.

–

Switchthemainswitchon.

–

Start a new sewing cycle.

2.9 Thread tension

The interlacing of the threads must lie in the middle of the workpiece. Thick and hard material requires a tighter thread tension than thin and

soft fabrics. Too high thread tensions can lead to undesired ruffling and thread breakage in case of thin material.

Setting the brake spring 4:

At a position stop of the machine head the brake spring 4 avoids an after-run of the hook thread bobbin.

–

Set the brake spring 4 by alignment. The brake power is set correctly when the brake spring 4 projects beyond the surface 3 by approx. 1 mm.

–

When setting the tension s pring 6 the brake power is to be taken into account.

Setting the tension spring 6:

–

First set only a minimum tension of leaf spring 6 at the adjusting screw 5. Increasing the hook thread tension: Turn to the right Reducing the hook thread tension: Turn to the left

–

With the bobbin inserted and the hook thread threaded through the throat plate a uniform and easy thread pulling must be guaranteed.

Setting the needle thread tension:

–

Adjust the needle thread tension until a uniform stitch pattern is achieved.

–

Set the tension of the needle threads at knurled nut 1 (right needle thread) and knurled nut 2 (left needle thread). Increasing the needle thread tension: Turn to the right Reducing the needle thread tension: Turn to the left

2.10 Stacking control

The reflected light barrier 1 monitors the stacking and blowing-out of thesewnworkpiece. The transport carriage does not return before the workpiece has been correctly moved out.

–

If the workpiece is not moved out correctly, the light beam between the reflected light barrier 2 and the reflecting sheet 1 remains interrupted. A renewed start is not possible.

Caution: Danger of injury!

Do not reach into the runway of the transport carriage when removing the workpiece.

In sewing programs with automatic carriage return the transport carriage moves to the front after the light beam has been released.

–

Remove the workpiece out of the light beam area. A new sewing cycle can be started.

ATTENTION!

For a trouble-free function of the stacking control clean the lens of the reflected light barrier once a day with a soft cloth.

2.11 Slanted pocket corners

Dependent on the working method the 745-34 is equipped with an automatic or manual corner knife station.

0745 337524 Manual corner knife station

The setting of the corner knives with regard to the pocket length is programmable and is effected via a step motor.

The slanted pocket corners result from the seam offset of the two seam rows programmable in steps of 1 mm.

The pocket c orner incision can be manually adjusted by two knurled screws. For the seam beginning and seam end it amounts to a maximum of +/- 13 mm relative to the second seam.

The distance of the corner knives to the seam is manually adjustable. The whole knife block can be tilted out to make setting and service

work possible.

0745 337534 Automatic corner knife station

The setting of the corner knives with regard to the pocket length is programmable and is effected via a step motor.

The slanted pocket corners result from the seam offset of the two seam rows programmable in steps of 1 mm.

The programmable pocket corner incision - adjustable via two step motors - can be freely selected for the seam beginning and seam end and amounts to a maximum of +/- 13 mm relative to the second seam.

The distance of the corner knives to the seam is manually adjustable. The whole knife block can be tilted out to make setting and service

work possible.

2.11.1 Swinging the corner knife station out / in

The corner knife station 1 can be swung out completely.

Caution: Danger of injury!

Switchthemainswitchoff. Swing the corner knife station out only with the sewing unit switched off.

Swinging the corner knife station out

–

Swing the corner knife station to the left. The knives are accessible for setting and service work.

Swinging the corner knife station in

–

Swing the corner knife station back under the sewing unit and let it catch.

ATTENTION!

The corner knife station must audibly lock when being pushed in.

Note:

If the corner knife station is swung out with the sewing unit switched on, the following message appears:

2.11.2 Setting the corner knives (Manual corner knife station)

With the 745-34 the slanted pockets result from the seam offset between the two seam rows programmed at the control panel.

Caution: Danger of injury!

Switch off the main switch. Set the corner knives only with the sewing unit switched off.

–

Swing the corner knife station out (see chapter 2.11.1)

Setting the angle of the corner knives

The angle of the corner knife is set by turning the knife blocks 2 and 4. –

Loosen the screws 1 and 3.

–

Turn the knife blocks 2 and 4 equally.

–

Tighten the screws 1 and 3.

–

Set the angle at the rear knives correspondingly.

Height of the corner knives

The corner knives are not height-adjustable. The knives always cut completely through.

Corner knife incision (offset)

The slants of the pockets result from the offset of the left and right corner knife. The right corner knife is a stationary one, the left knife is set according to the required offset.

–

Basic position (sewing of straight pocket corners): The edges 1 and 2 are flush. Adjustment by dial 5 or 6.

–

Offset (sewing of slanted pocket corners) The left corner knife is set to the front or to the back by the desired value by means of dial 5 (front knife) and dial 6 (rear knife).

–

Swing the corner knife station in (see chapter 2.11.1).

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