Page 1: Operating Instructions
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 •...
Page 2 745 - 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 All rights reserved. Property of Dürkopp Adler AG and copyrighted. Reproduction or publication of the content in any manner, even in extracts, without prior written permission of Dürkopp Adler AG, is prohibited.
Page 3 Foreword This instruction manual is intended to help the user to become familiar with the machine and take advantage of its application possibilities in accordance with the recommendations. The instruction manual contains important information on how to operate the machine securely, properly and economically. Observation of the instructions eliminates danger, reduces costs for repair and down-times, and increases the reliability and life of the machine.
Page 4: General Safety Instructions
General safety instructions The non-observance of the following safety instructions can cause bodily injuries or damages to the machine. 1. The machine must only be commissioned in full knowledge of the instruction book and operated by persons with appropriate training. 2.
Page 5: Table Of Contents
Index Page: Part 3: Service Instructions 745-34-2 General notes Gauges ........... . Groove in the arm shaft crank .
Page 6 Index Page: Transport carriage Rear end position ..........3.1.1 Position of the limit switch in the slotted hole .
Page 7 Index Page: Folders and pick-up folders (Working methods B, F) 12.1 Proper fastening..........12.2 Aligning the folder as to the middle of the pocket opening.
Page 8 Index Page: 15.6 Pocket bag feed ..........15.6.1 Loading position .
Page 9: Part 3: Service Instructions
General notes The service instruction manual on hand describes the adjustment of the sewing unit 745-34-2 in an appropriate sequence. ATTENTION ! Some of the setting positions are interdependent. Therefore it is absolutely necessary to do the adjustment following the described order. The operations described in the service instructions must only be executed by qualified staff and correspondingly instructed persons respectively!
Page 10: Gauges
Gauges The gauges listed below allow a precise setting and testing of the sewing unit. The locking pin 1 belongs to the standard accessories of the sewing unit. It serves to arrest the machine head in position A (looping stroke). The setting gauges marked with *) are available on inquiry.
Page 11: Groove In The Arm Shaft Crank
Groove in the arm shaft crank The arm shaft crank 1 is provided with a groove 2 (5 mm). The machine head can be locked with the locking pin through drill-hole 3. Now the machine is in looping stroke position (position A).
Page 12: Sewing Machine Head
Sewing machine head Raising the sewing machine head For maintenance work the machine head can be raised. For this purpose the transport carriage must be in its rear position. Caution: Danger of injury ! Switch off the main switch. Raise the machine head only with the main switch switched off.
Page 13 Raising the machine head – Remove covering cap 1. Lift the covering cap at the front so that the arrest is released. Lift the covering cap carefully. – Swivel the folding station 3 by 90°. – Swing the locking pin 4 upwards. –...
Page 14: Removing / Installing The Sewing Machine Head
Removing / Installing the sewing machine head For repair work or an easier change to another needle distance the machine head can be removed. For this purpose the transport carriage must be in its rear position. Caution: Danger of injury! Switch off the main switch and disconnect the unit from the pneumatic supply system.
Page 15 Removing the machine head – Remove the covering cap 1. For this purpose lift the covering cap at the front so that the arrest is released. Lift the covering cap carefully. – Swivel the folding station 3 by 90°. – Swing the locking lever 4 upwards.
Page 16: Crank Pin At The Arm Shaft
Crank pin at the arm shaft The distance between the eccentric crank pin 1 and the arm shaft 4 determines the needle bar stroke and thus the upper dead center of the jointly and separately connectable needle bars. ATTENTION ! The crank pin 1 is precisely set by the manufacturer! After exchanging the thread lever or if the needles do not disconnect correctly any longer, the crank pin 1 has to be readjusted.
Page 17 Caution: Danger of injury ! Switch off the main switch. Adjust the crank pin only with the main switch switched off. – Remove the head cover 9 after loosening the fastening screws 8. – Swivel the thread tension plate 10 sideways after loosening the fastening screws 11.
Page 18 – Detach the needle bar tie rod from the crank pin 1 after unscrewing its fastening screws (ATTENTION left-hand thread) and pull it off with the needle cage. – Turn the handwheel until the Allen screws 2 point downward. In this position the screws are accessible. –...
Page 19: Needle Bar Linkage And Disconnectable Needle Bars
Needle bar linkage and disconnectable needle bars 2.4.1 Removing the needle bar linkage Caution: Danger of injury! Switch off the main switch. Remove the needle bar linkage only with the sewing unit switched off. – Unscrew the screws 1 and take off head cover 2. –...
Page 20 – Loosen the counter nut 12. – Loosen the adjusting screw 13 a bit. ATTENTION ! Do not loosen both adjusting screws 13. With the two adjusting screws 13 the correct height of the linkage frame has been set by the manufacturer. ATTENTION ! Avoid damage to the oil wick when taking off the needle bar.
Page 21: Removing A Needle Bar From The Linkage
2.4.2 Removing a needle bar from the linkage – Loosen the clamping screw 1. – Pull out the bearing bolt 2 – Pull off the support plate 3 from the needle bar linkage. – Unscrew the screws 8 and 10. –...
Page 22: Disassembly Of The Needle Bar
2.4.3 Disassembly of a needle bar – Remove the linkage 16 and the needle bar as described under 2.4.1. – Screw off screw 1 and unscrew the needle holder 2. – Unscrew screw 15 and loosen the spring counter bearing 16. ATTENTION ! The spring counter bearing is under spring pressure.
Page 23: Installation Of The Needle Bars In The Needle Bar Linkage
2.4.5 Installation of the needle bars in the needle bar linkage – Insert the needle bar 7 in the linkage 1 from below. – Insert the needle bar in yoke 14 and clamping ring 13. The thin side of the clamping ring must point to the other needle bar and its indentation must point upwards.
Page 24 – Fasten the clamping ring 13 on the needle bar. Please observe that both clamping rings 13 with their round extensions are guided in clevis 17 fastened on the yoke. After tightening the fastening screw 15 the safety bolt 16 has to be tightened, too. –...
Page 25: Installation Of The Needle Bar Linkage
2.4.6 Installation of the needle bar linkage Caution: Danger of injury ! Switch off the main switch. Mount the needle bar linkage only with the sewing unit switched off. – Push the support plate 4 on the needle bar linkage 5. –...
Page 26 – Push the thread puller 11 on the pins 9 and 12 and tighten with screws 10 and 13. – Adjust the thread puller (see chapter 2.10).
Page 27: Height Of The Needle Bar Linkage
2.4.7 Adjusting the height of the needle bar linkage Caution: Danger of injury ! Switch off the main switch. Check and adjust the height of the needle bar linkage only with the sewing unit switched off. Standard checking For a safe engagement and disengagement of the needle bars the needle bar linkage must be precisely set as to the needle bars.
Page 28: Switch Actuation Point Of The Needle Bars
2.4.8 Adjusting the switch actuation point of the needle bars Caution: Danger of injury ! Switch off the main switch. Check and adjust the switch actuation point of the needle bars only with the sewing unit switched off. Standard checking The lower end position of the switching latches 3 has to be set in such a way that the needle bars disconnect safely when moving upwards.
Page 29: Aligning The Needle Bar Linkage To The Throat Plate 25
2.4.9 Aligning the needle bar linkage to the throat plate Caution: Danger of injury ! Switch off the main switch. Check and adjust the alignment of the needle bar linkage only with the sewing unit switched off. Standard checking The needles should penetrate in the center of the holes of throat plate 3.
Page 30: Exchanging The Needle Holder
2.4.10 Exchanging the needle holder Caution: Danger of injury ! Switch off the main switch. Check and exchange the needle holder only with the sewing unit switched off. ATTENTION ! For changing a needle holder the needle bar in question must be in position “down”.
Page 31: Hook
Hook 2.5.1 Adjusting the hook shaft height Standard checking The distance between the throat plate support 4 and the flange surface 1 of the hook shaft must amount to 17.7 mm. The exact height of the hook shafts is set by means of gauge 3 (order number 0244 001001).
Page 32: Adjusting The Gear Clearance Of The Hook Drive
2.5.2 Adjusting the gear clearance of the hook drive Standard checking The gear clearance between worm and worm wheel should be as small as possible. The free movement must, however, remain guaranteed. The gear clearance has to be reset after every adjustment of the hook drive in axial direction (alteration of the needle distance).
Page 33: Adjusting The Looping Stroke
2.5.3 Adjusting the looping stroke Standard checking The looping stroke is the way of the needle bars from the bottom dead center to the point where the hook tips 3 are at the level of the middle of needle 4. The looping stroke is 2 mm.
Page 34: Adjusting The Height Of The Needle Holders
2.5.4 Adjusting the height of the needle holders 1,5 mm Standard checking In looping stroke position the distance between the top edge of the needle’s eye and the hook tip 2 must amount to 1.5 mm. The setting is done by means of the measuring bridge 3 (order number 0212 4942) and the adjusting pin 4 (order number 0216 1070).
Page 35 Correction – Remove the throat plate. – Remove the needles from the needle holders. Hint For turning the needle holders one needle bar each has to be disconnected. – Move the needle bars by handwheel nearly up to the upper dead center.
Page 36: Adjusting The Distance Between Hook Tips And Needles
2.5.5 Adjusting the distance between hook tips and needles Standard checking In looping stroke position the distance between the hook tips 6 and the needles 7 should amount to 0.1 mm. The set distance allows to work with needle sizes Nm 90 to Nm 110. When changing between these needle sizes a correction of the distance between the hook tips and the needles is not necessary.
Page 37 – Loosen screw 12. – Reset the needle protection 11 by turning the eccentric bolt 13. – Remove the needle from the needle holder. – Push the adjusting pin 5 into the needle holder as far as it will go. –...
Page 38: Needle Protection
2.5.6 Needle protection 0,1 mm Standard checking The needle protection 1 avoids that the needle 4 is deflected into the path of the hook tip 5. Before the hook tip 5 reaches the needle, the needle point must abut on the needle protection 1. It must not be possible to push the needle into the path of the hook tip 5.
Page 39: Exchanging The Hook
2.5.7 Exchanging the hook Caution: Danger of injury ! Switch off the main switch. Exchange the hook only with the sewing unit switched off. – Remove the throat plate 6 after loosening the fastening screws. – Remove the bobbin case top part 1 with bobbin. –...
Page 40: Adjusting The Bobbin Case Holding Wire
2.5.8 Adjusting the bobbin case holding wire Function The bobbin case holding wire 6 holds the bobbin case top and bottom parts in a certain position against the rotary motion of the hook. The needle thread loop guided around the hook is pulled between the springy holding wire 6 and the edge 5 of the bobbin case top part.
Page 41 Correction – Loosen the clamping screw 3. – Adjust the holding wire 1. The holding wire must project from the plate 5 by 13 mm. – Tighten the clamping screw 3. – Loosen screw 6. – Adjust the height of plate 5. The holding wire 1 must abut in front of edge 2 of the bobbin case top part 9.
Page 42: Aligning The Light Barriers Of The Bobbin Thread Monitor
2.5.9 Aligning the light barriers of the bobbin thread monitor Standard checking The light barrier holders 3 and 5 are adjusted by the manufacturer in such a way that there is a sufficient safety distance of 3,5 mm between the revolving hooks and the light barriers 2 and 6. The alignment of the reflected light barriers is done in the adjustment program (see Programming Instructions, chapter 7.2.1).
Page 43 If the alignment is correct: a reflection occurs at the surface 7 of the bobbin hub when an empty bobbin is rotated. The black bar and a figure between 1 and 15 will show the intensity of the reflection. If the minimal value (=8) is shown, an arrow will be displayed between the reflecting head and the hook-thread bobbin.
Page 44: Center Knife
Center knife 2.6.1 Removing / Installing the driving motor Caution: Danger of injury ! Switch off the main switch. Remove and install the driving motor only with the sewing unit switched off. Removing the driving motor – Unscrew the screws 6 at the driving motor and pull off cover 1. –...
Page 45: Removing / Installing The Switching Cylinder
2.6.2 Removing / Installing the switching cylinder Caution: Danger of injury ! Switch off the main switch. Remove and mount the switching cylinder only with the sewing unit switched off. Removing the switching cylinder – Pull off the pneumatic hoses 3 and 4. –...
Page 46: Adjusting The Knife
2.6.3 Adjusting the knife Caution: Danger of injury ! Switch off the main switch. Separate the sewing unit from the pneumatic system. Adjust the center knife only with the sewing unit switched off. Standard checking In the bottom dead center the front edge 2 of center knife 3 must jut out approx.
Page 47 – Loosen screws 5 and 6. – Place the knife holder 4 with the center knife 3 to the left against the stationary knife in the throat plate. The center knife must abut in parallel position and with slight pressure. –...
Page 48: Thread Controller Spring
Thread controller spring Caution: Danger of injury! Switch off the main switch. Adjust the thread controller spring only with the sewing unit switched off. Standard checking The thread controller springs must keep the needle threads under tension until the needle points penetrate the fabric. If the needle threads are slack when the needles penetrate the fabric it may happen that the needles prick the threads when moving down.
Page 49: Trimming And Clamping Device For The Needle Threads
Trimming and clamping device for the needle threads 2.8.1 Function Caution: Danger of injury! Switch off the main switch. Check knife and thread catcher only with the sewing unit switched off. Function – The cylinder 2 is switched on after the seam end and during the feed to the corner knives.
Page 50 2.8.2 Exchanging and adjusting knife and thread catcher 0,5 mm Caution: Danger of injury ! Switch off the main switch. Exchange knife and thread catcher only with the sewing unit switched off. Standard After a certain service life the knife 5 loses its sharpness. The blunt knife has to be removed for resharpening.
Page 51: Exchanging Knife And Thread Catcher
Mount the complete thread catcher – Mount the complete thread catcher on the machine head. – Mount the complete thread catcher in such a way that the needle thread catcher 3 is centric between the needles. – Adjust the height of the thread catcher so that the dimension between sliding sheet and lower edge of the needle thread catcher is 27 +/- 1 mm.
Page 52: Trimming And Clamping Device For The Hook Threads
Trimming and clamping device for the hook threads Function – After the seam end and during the thread pulling process the hook threads are pulled through the thread grooves of the throat plate into the open hook thread scissors 2 and the hook thread clamp 1. –...
Page 53 Standard The top edge of the hook thread scissors 2 must be on the same level as the top side of the throat plate. A hook thread scissors in a too high position may damage the fabric. If the hook thread scissors is positioned too low, the hook threads are not cut off.
Page 54 – Align the spring clamping sheets 3. The spring clamping sheets must abut on the throat plate panel flat and with slight spring pressure. Check the safety distance between the hook tips and the pneumatically opened thread clamps. For this purpose please proceed as follows: –...
Page 55: Thread Puller For The Needle Threads
2.10 Thread puller for the needle threads Caution: Danger of injury ! Switch off the main switch. Adjust the thread puller only with the sewing unit switched off. Standard checking The thread puller 1 pulls a certain needle thread quantity out of the opened thread tension.
Page 56: Synchronizer
2.11 Synchronizer Caution: Danger of injury! Switch off the main switch. Adjust the synchronizer only with the sewing unit switched off. Standard checking After positioning the thread lever should be at the upper dead center. The edge of the cam segment should be centric between the fork of the light barriers.
Page 57: Oil Lubrication
2.12 Oil lubrication Caution: Danger of injury ! Oil can cause skin rashes. Avoid longer skin contact. After contact wash yourself thoroughly. ATTENTION ! The handling and disposal of mineral oils is subject to legal regulations. Deliver used oil to an authorized collecting station. Protect your environment.
Page 58: Hook Lubrication
2.12.1 Hook lubrication Standard The necessary oil quantity has been adjusted by the manufacturer with the screws 7 and 8. It should be reduced or increased in special cases only. – Adjust the screws 7 and 8. – Screw the screws in: less oil –...
Page 59: Transport Carriage
Transport carriage Rear end position Standard checking The switch 1 determines the rear and by means of a definitely specified path also the front end position of the transport carriage. The switching screw 3 should be 12 mm above the fastening surface at the transport carriage.
Page 61: Position Of The Limit Switch In The Slotted Hole
3.1.1 Position of the limit switch in the slotted hole Checking – Unscrew screws 7 and take off the covering cap 6. – Check the position of the limit switch 1 in the slotted hole 2. Correction – Loosen the counter nut at the limit switch 1. –...
Page 62: Changing The Toothed Belt
Changing the toothed belt Caution: Danger of injury ! Switch off the main switch. Change the toothed belt only with the sewing unit switched off. For an easier exchange the toothed belt 3 is divided. It is held together by the belt clamp 4. Removing the old toothed belt –...
Page 63 Setting the toothed belt course – It is possible to adjust the course of the toothed belt on the belt pulley 5 through the screws 6 and 8. The toothed belt 3 should run in the middle of the belt pulley. –...
Page 64: Adjusting The Belt Tension
Setting the toothed belt tension Caution: Danger of injury ! Switch off the main switch. Check and adjust the setting of the toothed belt tension only with the sewing unit switched off. Standard checking – Push the transport carriage to the front. –...
Page 65: Feeding Clamps
Feeding clamps Measuring line for aligning the feeding clamps and the folder For an unhindered material feed and a perfect pocket opening the folding and cutting tools as well as the marking lamps must be aligned to the middle of the pocket opening. The middle between both needle holders is considered as the middle of the pocket opening.
Page 66: Aligning The Feeding Clamps As To The Auxiliary Line
Aligning the feeding clamps as to the auxiliary line Caution: Danger of injury ! Switch off the main switch. Check the parallel position of the feeding clamps only with the sewing unit switched off. Standard checking The feeding clamps 5 must be in parallel position to the pick-up folder and to the auxiliary line 2.
Page 67: Feeding Clamp Stroke
Feeding clamp stroke Caution: Danger of injury ! Switch off the main switch. Check and adjust the stroke of the feeding clamps only with the sewing unit switched off. Standard checking When the flap clamps 4 are closed, the raised feeding clamps 2 and 3 must pass the machine arm 1 without hitting it.
Page 68: Distance Between The Feeding Clamps And The Sole Of The Folder
Distance between the feeding clamps and the sole of the folder Standard checking Between the outer edges 1 of the folder sole and the inner edges 2 of the feeding clamps there must be a certain distance. When processing medium-weight clothing fabrics the distance should amount to approx. 1.0 to 1.5 mm.
Page 69 – Start the sewing operation and check the distance between the outer edges of the folder sole and the inner edges of the feeding clamps. Correction – Set the stop screws 4 with the knurled nuts 3.
Page 70: Front End Position Of The Feeding Clamp
Front end position of the feeding clamp Caution: Danger of injury ! Switch off the main switch. Adjust the feeding clamp with utmost caution. – Move towards the reference point (switch 1). – Select version A or D/B/F. The feeding clamp runs to the front end position. –...
Page 71: Device For Blowing The Piping Strip / Pocket Bag For 745-34-2 A/B/F
Device for blowing the piping strip / pocket bag for 745-34-2 A/B/F In case of class 745-34-2 B and F the clamps K 12, K 13 and K 16 are equipped with a device for blowing the piping strip. For clamp K 19 (745-34-2 A) the optional set of parts 0745 597884 for blowing is available.
Page 72: Knives For Corner Incision
Knives for corner incision Caution: Danger of injury ! Do not reach into the area of the corner knives. The corner knives shooting up can cause severe cuts. Carry out adjusting operations with utmost caution when the sewing unit is running. Presetting 0,1 - 0,3 mm In order to be able to precisely adjust the position of the corner...
Page 73: Belt Tension
Belt tension Standard checking Over half the tightening length S = 185 mm the toothed belt 1 must bend under the test load FV = 50 N so that the loaded belt just touches the other belt. Consequences of a too high toothed belt tension –...
Page 74: Aligning The Corner Knife Station As To The Seams
Aligning the corner knife station as to the seams Caution: Danger of injury ! Switch off the main switch. Adjust the corner knife station only with the sewing unit switched off. Standard checking The corner incisions must be symmetrical to the seams. –...
Page 75 – Loosen the screws 3 slightly. – Shift the holder 2 correspondingly. – Tighten the screws 3. – Swing the corner knife station back. – Correct the clearance of the switch 6. Correction of the corner incision at the seam beginning –...
Page 76: Adjusting The Slant Of The Corner Incisions
Adjusting the slant of the corner incisions Caution: Danger of injury ! Switch off the main switch. Adjust the corner knives only with the sewing unit switched off. Standard checking The incisions of the corner knives should be as close to the seam as possible, but must not cut it.
Page 77: Corner Knife Adjustments
Corner knife adjustments The corner knives are adjusted by means of machine-specific adjustment and test programs. The procedure is described in the instruction manual “Part 4: Programming Instructions DAC Cl. 745-34-2” The following adjustments have to be made: · Check the corner knife adjustment See Programming Instructions, chapter 7.3.5 ·...
Page 78: Exchanging The Corner Knives
Exchanging the corner knives Caution: Danger of injury ! Switch off the main switch. Exchange the corner knife station only with the sewing unit switched off. Danger of cuts. Do not reach into the sharp edges of the corner knives. Blunt knives are to be exchanged against a set of knives included in the accessories.
Page 79: Laser Markings
Laser markings Class 745-34-2 is equipped with 5 standard lasers for marking the positioning points. Laser 1 marks the front positioning point for the left or right workpiece, laser 5 marks the rear positioning point. Laser 3 marks the middle of the pocket opening. The sewing area is limited by the markings 1 and 5.
Page 80: Aligning The Markings
Aligning the laser markings 16 12 Caution: Danger of injury ! Laser light. Do not look into the light source. The markings 13 mark the seam beginning, the markings 14 the middle of the pocket opening and the markings 15 the seam end. The markings 1, 2 and 4, 5 must be aligned as to the cutting line 8 (middle of pocket opening).
Page 81 Spacing A Checking the exact position of the markings Light marking 1 and 2 respectively (seam beginning): – Press the function key F1 when the main screen is indicated. The display changes to the screen “Pocket programs”. – Select the program for the laser markings with the cursor keys “ï”...
Page 82: Reflected Light Barriers For Flap Scanning
Reflected light barriers for flap scanning Swivel arm Caution: Danger of injury ! Switch off the main switch. Adjust the swivel arm of the reflected light barriers only with the sewing unit switched off. Standard checking The swivel arm 1 should stand in parallel position to the machine arm. When swivelling in front of the arm it must snap in safely.
Page 83: Aligning The Light Barriers
Aligning the light barriers The light barriers are aligned by means of machine-specific adjustment and test programs. The procedure is described in the instruction manual “Part 4: Programming Instructions DAC Cl. 745-34-2” Aligning the light barriers chapter 7.3.4. The following adjustments have to be made: –...
Page 84: Aligning The Air Nozzles For Cleaning The Reflected Foil
Aligning the air nozzles for cleaning the reflected foil The light barrier fixture is equipped with additional air nozzles for cleaning the reflected foils from dust and fluff. Standard checking The air nozzles 1 have to be aligned in such a way that the air stream is directed towards the reflected foils while the feeding clamp moves in loading position.
Page 85: Aligning The Folding Station Plate As To The Measuring Line
Aligning the folding station plate as to the measuring line Method A 79 mm +/- 0,5 Method D, B, F 75 mm +/- 0,5 Caution: Danger of injury ! Switch off the main switch. Adjust the folding station plate of the loading station only with the sewing unit switched off.
Page 86: Positioning The Sewing Machine Head As To The Table Top
Positioning the sewing machine head as to the table top Caution: Danger of injury ! Switch off the main switch. Adjust the sewing machine head only with the sewing unit switched off. Standard checking The non-varnished surface of the base plate 1 of the sewing machine head must be at the same level as the table top 2 over its whole length.
Page 87: Fabric Sliding Sheet And Vacuum Plate
10. Fabric sliding sheet and vacuum plate 10.1 Adjusting the height of the vacuum plate Standard checking The vacuum plate should be on one level with the table top. – Lift the fabric sliding sheets 1 at the front and swivel them to the left.
Page 88: Aligning The Fabric Sliding Sheet As To The Throat Plate
10.2 Aligning the fabric sliding sheet as to the throat plate Caution: Danger of injury ! Switch off the main switch. Align the fabric sliding sheets only with the sewing unit switched off. Standard checking The fabric sliding sheets 1 and 3 have to be aligned in such a way that their cutouts have a uniform distance to the throat plate 3.
Page 89: Folder (Working Method A)
Folder (working method A) 11.1 Proper fastening Caution: Danger of injury ! Switch off the main switch. Remove and mount the folder only with the sewing unit switched off. Standard The folder 3 has to be pushed upwards until it abuts on the clamping collar 1.
Page 90: Aligning The Folder As To The Middle Of The Pocket Opening
11.2 Aligning the folder as to the middle of the pocket opening Example for NA 12 Caution: Danger of injury ! Switch off the main switch. Align the folder as to the middle of the pocket opening only with the main switch switched off.
Page 91: Lifting Motion Of The Folder
11.3 Lifting motion of the folder Caution: Danger of injury ! Switch off the main switch. Adjust the lifting motion of the folder only with the sewing unit switched off. Standard checking When the folder is lowered – Lower the folder on the fabric sliding sheet. In this position there must be a clearance of 0.3 - 0.5 mm between the guide roller 7 and the lowest point of the guide groove 6.
Page 92 Caution: Danger of injury ! Switch off the main switch. Adjust the guide groove for the folder only with the sewing unit switched off. – Loosen the screws 8 and 9. – Shift the cam piece 6 in the slotted holes. –...
Page 93: Position Of The Folder To The Needles And To The Center Knife
11.4 Position of the folder to the needles and to the center knife Caution: Danger of injury ! Switch off the main switch. Align the folder as to the needles and to the center knife only with the sewing unit switched off. Standard checking When the folder is properly fastened, the following conditions must be fulfilled:...
Page 94: Aligning The Guide Plates At The Folder
11.5 Aligning the guide plates at the folder Caution: Danger of injury! Switch off the main switch. Adjust the guide plates only with the sewing unit switched off. Standard checking When the folder is lowered, the edges 3 of the guide plates 2 must project from the needles by approx.
Page 95: Recognition Of The Folder
11.6 Recognition of the folder Caution: Danger of injury ! Switch off the main switch. Check and adjust the cam switch only with the sewing unit switched off. Standard checking By means of the switches S7 and S8 it is checked whether the used folder belongs to the selected sewing program.
Page 96: Proper Fastening
12. Folders and pick-up folders (working methods B, D, F) 12.1 Proper fastening Caution: Danger of injury ! Switch off the main switch. Remove and mount the folder only with the sewing unit switched off. Standard Folder 2 is positioned correctly when the fastening screw 1 pushes into the insertion bore of pin 3.
Page 97: Aligning The Folder As To The Middle Of The Pocket Opening
12.2 Aligning the folder as to the middle of the pocket opening Example for NA 12 Caution: Danger of injury ! Switch off the main switch. Align the folder as to the middle of the pocket opening only with the main switch turned off.
Page 98 12.3 Checking the position of the folder as to the needles and to the center knife Caution: Danger of injury ! Switch off the main switch. Check the position of the folder as to the needles and to the center knife only with the main switch switched off.
Page 99 12.4 Adjusting the guide plates with additional spring loaded downholder at the folder Caution: Danger of injury ! Switch off the main switch. Check and adjust the guide plates only with the main switch switched off. Standard checking According to the material thickness and considering whether the flap is to be positioned on the right or on the left the height of the guide plates has to be adjusted in such a way that they can easily be lifted by the workpiece.
Page 100 Adjusting the spring pressure – Loosen nut 4. – Adjust the spring pressure with core pin in nut 4. – Tighten nut 4. Adjusting the guide plates aside the needles – Carefully align the guide plates 1 with a pair of pliers. Positioning of the spring loaded downholder 11 –...
Page 101: Lifting Motion And Suspension Of The Folder
12.5 Lifting motion and suspension of the folder Caution: Danger of injury ! Switch off the main switch. Check and adjust lifting motion and suspension of the folder only with the main switch turned off. Standard checking The folder 1 is suspended flexibly and is lifted by the pneumatic cylinder 2.
Page 102 257,5 mm 117,5 mm...
Page 103: Presetting The Mounting Plate For The Pick-Up Folder
12.6 Presetting the mounting plate for the pick-up folder Caution: Danger of injury ! Check and adjust the mounting plate for the pick-up folder with utmost caution when the sewing unit is running. Standard checking After the pick-up folder has laterally swivelled to the center of the pocket opening, the distance between the face side 2 of the mounting plate 3 and the needles should amount to 257.5 mm and the distance between the left side of mounting plate 3 and the measuring line 4 to...
Page 104: Aligning The Pick-Up Folder
12.7 Aligning the pick-up folder Caution: Danger of injury ! Align the pick-up folder with utmost caution when the sewing unit is running. 12.7.1 Aligning the folder sole as to the middle of the pocket opening – Push the pick-up folder 5 upwards as far as it will go. –...
Page 105: Adjusting The Height Of The Pick-Up Folder As To The Folder
12.7.2 Adjusting the height of the pick-up folder as to the folder Adjust the height of the pick-up folder in such a way that - when the pick-up folder is lowered - both soles are flush at the connecting surface seen from the side. For this purpose turn the self-locking threaded pin correspondingly.
Page 106: Position Of The Pick-Up Folder In Sewing Direction
12.7.3 Position of the pick-up folder in sewing direction – Slightly loosen the screws 3 at the mounting plate. – Shift the lowered pick-up folder in sewing direction so that there is a distance of 0.5 mm between folder and pick-up folder. Take care that the sole of the pick-up folder rests on the fabric sliding sheet over its whole length.
Page 107: Adjusting The Guide Plates At The Pick-Up Folder
12.8 Adjusting the guide plates at the pick-up folder 8 mm 0,3-0,5 mm Standard checking The guide plates at the pick-up folder have to be adjusted in such a way that the workpieces can pass the junction between folder and pick-up folder without hindrance.
Page 108: Stop Screw For The Pick-Up Folder
12.9 Stop screw for the pick-up folder Caution: Danger of injury ! Adjust the stop screw for the pick-up folder with utmost caution when the sewing unit is running. Standard checking The stop screw 10 has to be adjusted in such a way that - with the folder lowered - the distance between the folder sole and the sliding sheet amounts to approx.
Page 111 13. Feeding device for working method B and F...
Page 124 A1 A2 19...
Page 126 Mtter Bush 3 mm 9 10...
Page 129 ocket opening line e.g.: L1 = 60 - 5 = 55 z = Flap cut T = Flap depth...
Page 131 . Thrust bolts 5 and 6 2. Thrust bolt 8 flush resp. screwed in . Thrust bolt 8 flush resp. screwed in (larger gap) 2. Thrust bolts 5 and 6 flush resp. screwed in (gap existing)
Page 132 14. Device for cutting the piping ends open automatically...
Page 139 15. Positioning device for working method D...
Page 146 16. Adjusting the optional equipment...
Page 153 1,5 mm 0,3-0,5 mm...
Page 157: Smoother
16.7 Smoother...
Page 158: Pressure Monitor
17. Pressure monitor...

DURKOPP ADLER 745-34-2 Installation Instructions Manual

Part 3: Service Instructions

1 General Notes

2 Sewing Machine Head

3 Transport Carriage

4 Feeding Clamps

5 Knives for Corner Incision

6 Laser Markings

7 Reflected Light Barriers for Flap Scanning

8 Aligning the Folding Station Plate as to the Measuring Line

9 Positioning the Sewing Machine Head as to the Table Top

10 Fabric Sliding Sheet and Vacuum Plate

11 Folder (Working Method A)

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Installation Instructions

Service Instructions

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Summary of Contents for DURKOPP ADLER 745-34-2

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