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Part 3: Service Instructions Cl. 975 - 1 - 5
1.
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.
Machine Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1
Looping Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2
Needle Bar Height and Clearance of the Hook Point to the Needle . . . . . . . . . . . . . . . .
2.3
Needle Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.1 Lateral Position of the Needle Plate Carrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3.2 Upper and Lower Position of the Needle Plate Carrier . . . . . . . . . . . . . . . . . . . . . . .
2.3.3 Timing of the Switch Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4
Bobbin Case Opener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.1 Height of the Finger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4.2 Size of the Opening Gap ( Position of the Finger Run ) and Finger Depth . . . . . . . . . . . .
2.4.3 Timing the Opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5
2.5.1 Pressure Foot Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.2 Height Adjustment Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.3 Timing of the Pressure Foot Movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6
Thread Controller Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.7
2.8
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9
Sewing Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9.1 Position of the Sewing Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9.2 End Position Dampening of the Cylinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9.3 Timing of the Operation of the Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.10
Adjustment Screws for the Timing Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.
Thread Trimmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1
3.2
3.3
Clearance between the Drive Segment and Guide Curve . . . . . . . . . . . . . . . . . . . . .
3.4
Counter Knife and Thread Pull Knife . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5
Counter Knife Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.
Clamping Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1
Large Guide Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1.1 Attaching the Aluminium Strips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2
Changing the Stitch Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Summary of Contents for Duerkopp Adler 975-1-5
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Page 1: Table Of Contents
Home Contents Page: Part 3: Service Instructions Cl. 975 - 1 - 5 General ..........Machine Head . - Page 2 Contents Page: Small Guide Curves ......... 4.3.1 Function of the Guide Curves .
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Page 3: General
General These Service Instructions for the 975 - 1 - 5 describe the settings for the sewing unit. ATTENTION The tasks described in the Service Instructions may only be carried out by specialists or appropriately trained personnel ! Caution Risk of Injury During repair, conversion and maintenance work turn the main switch off. -
Page 4: Machine Head
Machine Head 2.1 Looping Stroke The looping stroke is the path of the needle bar from lower dead center up to the point where the hook point lies at the center of the needle. Caution Risk of Injury ! Conduct adjustment work and function testing only with greatest possible caution. -
Page 5: Needle Bar Height And Clearance Of The Hook Point To The Needle
2.2 Needle Bar Height and Clearance of the Hook Point to the Needle In the looping stroke position the hook point 2 lies at the center of the furrow. In the looping stroke position the clearance of the hook point to the furrow should be 0.1 mm. -
Page 6: Needle Plate
2.3 Needle Plate During the sewing sequence the needle plate is always in the upper position. The needle hole mushroom is bevelled on the inside so that the trim, at the beginning of the sewing procedure, cannot be pushed away and builds no folds. -
Page 7: Upper And Lower Position Of The Needle Plate Carrier
2.3.2 Upper and Lower Position of the Needle Plate Carrier In the upper position there is a clearance of 27.7 mm between the upper edge the needle plate 1 and the lower edge of the pin 2. In the lower position there is a clearance of 20.3 mm between the upper edge the needle plate 1 and the lower edge of the pin 2. -
Page 8: Timing Of The Switch Operation
2.3.3 Timing of the Switch Operation In the upper position of the needle plate switch 2 ( b20 ) should be triggered by the strip 3. In the lower position of the needle plate switch 1 ( b19 ) should be triggered by the strip 3. -
Page 9: Speed Of " Needle Plate Up And Down
2.3.4 Speed of “ Needle Plate Up and Down ” The needle plate is brought into the upper or lower position by cylinder 3. Caution Risk of Injury ! Conduct adjustment work and function testing only with greatest possible caution. “... -
Page 10: Bobbin Case Opener
2.4 Bobbin Case Opener The thread lever must pull the thread through between the middle piece 5 and its holder 4. In order for this procedure to occur unimpaired, the middle piece must at this moment be opened by the bobbin case opener. This allows the desired seam formation to be achieved with the lowest possible thread tension. -
Page 11: Size Of The Opening Gap ( Position Of The Finger Run ) And Finger Depth
2.4.2 Size of the Opening Gap ( Position of the Finger Run ) and Finger Depth The gap x between the opened middle piece 4 and its holder 3 should be appropriate for the thickness the thread to be sewn. The finger should have a clearance of approx. -
Page 12: Timing The Opening
2.4.3 Timing the Opening The middle piece should be opened at the moment the thread slips through between the middle piece 2 and its holder 1. Caution Risk of Injury ! Conduct adjustment work and function testing only with greatest possible caution. -
Page 13: Pressure Foot
2.5 Pressure Foot In the cross seam the opened beard clamp can no longer clamp the material. In order to avoid missing stitches the pressure foot is lowered. The lowering of the pressure foot occurs at the same time as the opening of the beard clamp. -
Page 14: Height Adjustment Range
2.5.2 Height Adjustment Range When the lowest stroke position is in effect the pressure foot at the lower dead center should have a clearance of 2.5 mm to the needle hole mushroom. Caution Risk of Injury ! Conduct adjustment work and function testing only with greatest possible caution. -
Page 15: Timing Of The Pressure Foot Movement
2.5.3 Timing of the Pressure Foot Movement The pressure foot should reach lower dead center together with the needle bar. The upward movement of the pressure foot begins only after the looping stroke. Caution Risk of Injury ! Conduct adjustment work and function testing only with greatest possible caution. -
Page 16: Thread Controller Spring
2.6 Thread Controller Spring The thread controller spring 2 should have just reached its lowest position when the needle has entered the cloth up to the eye. Caution Risk of Injury ! Turn the main switch off. Set the thread controller spring only with the sewing unit turned off. –... -
Page 17: Thread Tension Opening
2.7 Thread Tension Opening The thread tension opening occurs during the trimming sequence via the magnet in the head cover or manually by pressing the pin 1. Caution Risk of Injury ! Turn the main switch off. Set the thread tension opening only with the sewing unit turned off. Conduct a function test only with the greatest possible caution. -
Page 18: Lubrication
2.8 Lubrication Oil feed to the sewing head The hook drive shaft 8 feeds the oil from the pan through the tube 4 to the sewing head via spiral grooves . The window 2 over the tube makes possible a check of the oil feed. A part of the oil fed to the sewing head is used for the lubrication of the mechanical parts in the sewing head. -
Page 19: Regulating The Lubrication
2.8.1 Regulating the Lubrication Caution Risk of Injury ! Regulating the lubrication and checking are only to be conducted with greatest possible caution. Checking the oil level and the oil feed – Turn the sewing unit off and wait until the oil has collected. The viewing glass 3 must be half filled. - Page 20 Caution Risk of Injury ! Regulating the lubrication and checking are to be conducted only with the greatest caution. Regulating the hook lubrication The hook can only be lubricated if the oil whizzer disk is in the shell area of the hook. The hook should be safely lubricated with a smallest possible amount of oil so that a little oil as possible is consumed.
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Page 21: Sewing Arm
2.9 Sewing Arm 2.9.1 Position of the Sewing Arm With lowered sewing arm 1 the clearance between the milled bottom of the sewing arm and the lower arm surface should be 72.5 mm. Caution Risk of Injury ! Conduct adjustment work and function testing only with greatest possible caution. -
Page 22: End Position Dampening Of The Cylinder
2.9.2 End Position Dampening of the Cylinder The speed of the piston rod is reduced approx. 10 mm in front of the end position in order to softly brake the heavy sewing head. Caution Risk of Injury ! Conduct adjustment work and function testing only with greatest possible caution. -
Page 23: Timing Of The Operation Of The Switches
2.9.3 Timing of the Operation of the Switches In the upper position of the sewing arm switch 2 ( b17 ) should be triggered. In the lower position of the sewing arm switch 1 ( b18 ) should be triggered. Caution Risk of Injury ! Conduct adjustment work and function testing only with greatest possible caution. -
Page 24: Adjustment Screws For The Timing Belt
2.10 Adjustment Screws for the Timing Belt The two contact rollers 1 prevent the timing belt from jumping off the belt pulley when the sewing head is raised. Caution Risk of Injury ! Conduct adjustment work and function testing only with greatest possible caution. -
Page 25: Thread Trimmer
Thread Trimmer 3.1 Function Sequence When, after the “ seam end ” signal, the 1st position is reached, the thread trimmer magnet is switched on and the drive segment pressed against the guide curve. The thread tension is opened and the sewing unit runs at the cutting rpm of 160 min When the drive segment of the magnet is pulled into the recess of the guide curve, then the thread pull knife is swung into the needle thread... -
Page 26: Position Of The Base Plate And The Guide Curve
3.2 Position of the Base Plate and the Guide Curve The height of the base plate determines the clearance of the thread pull knife to the hook. The position of the guide curve determines the timing of the swinging in and out of the thread pull knife. Caution Risk of Injury ! Turn the main switch off. -
Page 27: Clearance Between The Drive Segment And Guide Curve
3.3 Clearance between the Drive Segment and the Guide Curve When the drive segment 4 is swung completely back there should be a clearance of 0.2 mm between it and the guide curve 3. Caution Risk of Injury ! Turn the main switch off. Set the clearance only with the sewing unit turned off. -
Page 28: Counter Knife And Thread Pull Knife
3.4 Counter Knife and Thread Pull Knife The clearance of the counter knife 2 to the needle 1 should be 4 mm. The position of the thread pull knife 3 to the counter knife determines the knife overlapping and the timing of the cutting. Caution Risk of Injury ! Turn the main switch off. -
Page 29: Counter Knife Pressure
3.5 Counter Knife Pressure The knife should securely cut with the least possible amount of pressure. Caution Risk of Injury ! Turn the main switch off. Set the guide plate and counter knife pressure only with the sewing unit turned off. Counter knife pressure –... -
Page 30: Clamping Table
Clamping Table 4.1 Large Guide Curve During the automatic operation the aluminium strips trigger the functions listed in the table via the initiators. Pos. Function Effect of an incorrect activation point Starting the sewing cycle - Thread breakage through after a set time. sewing in place. -
Page 31: Attaching The Aluminium Strips
4.1.1 Attaching the Aluminium Strips The aluminium strips are attached to the side surfaces of the large guide curve 1. The position of the aluminium strips is shown for the right clamping table. For the left clamping table it is a mirror image. Caution Risk of Injury ! Turn the main switch off. -
Page 32: Changing The Stitch Length
4.2 Changing the Stitch Length The tension pulley 2 on the V-belt determines the stitch length. The belt adjustment gearing on the motor is changed by the tension. A stitch length of 1.8 mm is set at the factory. Caution Risk of Injury ! Turn the main switch off. -
Page 33: Small Guide Curves
4.3 Small Guide Curves 4.3.1 Function of the Guide Curves The 3 guide curves no.s 1 to 3 mechanically trigger the functions listed in the table via the inner and outer curve runs 1. a = Outer guide curve = Inner guide curve Guide Curve Function No. -
Page 34: Position The Guide Curves On The Shaft
4.3.2 Position of the Guide Curves on the Shaft The guide curve no. 1 should, after a turn of 20°, start with the forward movement of the side slides of the fixed table. The drilled orientation hole 1 in the guide curves no. 2 and no. 3 must be in line with the drilled orientation hole of the guide curve no. -
Page 35: Position Of The Aluminium Strips On The Guide Curve
4.3.3 Position of the Aluminium Strips on the Guide Curves The aluminium strips 1 on the faces of the 3 guide curves stop their turning movement according to the function sequence. Caution Risk of Injury ! Turn the main switch off. Attach the aluminium strips to the guide curves only with the sewing unit turned off. -
Page 36: Switching Disks
4.4 Switching Disks 4.4.1 Function of the Switching Disks The switching disks no.s 1 to 10 trigger the function of various clamping table elements via the pneumatic valves. Switching Disk Function No. 1 Forward slide - Inner forward and back No. -
Page 37: Position Of The Switching Disks On The Shaft
4.4.2 Position of the Switching Disks on the Shaft The switching disks no.s 1 to 10 are arranged as per the setting disk. The switching disks no.s 3 to 10 are deployed as pairs ( 3 + 4, 5 + 6, 7 + 8, 9 +10 ). Caution Risk of Injury ! Turn the main switch off. -
Page 38: Position Of The Clamping Tablees
4.5 Position of the Clamping Tables The position of the clamping table determines the position of the seam formation on the trim. Before the contour determining elements are set, the position of the clamping table must first be set. Caution Risk of Injury ! Turn the main switch off. -
Page 39: Fixed Clamp
4.6 Fixed Clamp During folding the fixed clamp 1 (clamping table left) is pressed against the hold-down and then against the outer forward slide with half pressure. When sewing the fixed clamp is pressed against the swing clamp at full pressure. When sewing the cross seam the forward part of the fixed clamp is swung to the side by the needle hole mushroom. - Page 40 Speed of opening and closing – Set the program switch to 41 and press the “ STOP ” key. With the “ REPEAT ” key run through the function sequence in interval operation. – Observe the movement of the fixed clamp 8 when opening and closing.
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Page 41: Swing Clamps
4.7 Swing Clamp During sewing the fixed clamp 1 (clamping table left) is pressed against the swing clamp 2. The beard clamp on the swing clamp is opened by the guide curve so that the machine head can press the beard clamp to the side when sewing the cross seam. - Page 42 Cross clamp cylinder Just before the folding device reaches the sewing position the cross clamp cylinder 1 turns the swing clamp against the fixed clamp at full pressure. This sufficiently clamps the cloth in the area of the lengthwise seam. –...
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Page 43: Renewing The Coatings On The Swing Clamps
4.7.1 Renewing the Coatings on the Swing Clamp Swing clamp – Remove damaged sponge rubber 4 and antislip foil 3 from the spring plate 5 of the swing clamp 6. – Cut sponge rubber to size in 9 mm width and affix to the spring plate 5. -
Page 44: Interior Slides
4.8 Interior Slides The interior slides 1 and 2 determine the clearance between the seam and trim edge in the following seam segments. Seam Segment Element Trim Edge 2 Interior slides-Swing table 2 Interior slides-Swing table 3 Inner forward slide Position of the clamping table 1 Interior slides-Fixed table 1 Interior slides-Fixed table... -
Page 45: Setting The Interior Slides
4.8.1 Setting the Interior Slides Prerequisite for the setting of the interior slides is the correct positioning of the clamping table (short side seam d see Page 44). Caution Risk of Injury ! Turn the main switch off. Set the interior slides only with the sewing unit turned off. Position of the interior slide-Swing table The clearance of the trim edge a to the long side seam is 1mm. - Page 46 Position of the interior slide-Fixed table The clearance between trim edge f at the lower edge and the long side seam is 1.5 mm. – Loosen nut 2. Align the interior slide parallel to the fixed clamp. Tighten nut 2 again. –...
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Page 47: Side Slides
4.9 Side Slides The side slides fold the trim around the interior slides. 1 = Side slide-Swing table 2 = Side slide-Fixed table In the sleeve feed position of the folding device the interior slide should hang down. It is therefore held by 2 pins of the swung-forward side slide. -
Page 48: Outer Forward Slide
4.10 Outer Forward Slide During the folding sequence the fixed clamp presses the interior slide first against the hold-down and then against the swung-in outer forward slide 1 at half pressure. Caution Risk of Injury ! Turn the main switch off. Set the outer forward slide only with the sewing unit turned off. -
Page 49: Center Forward Slide
4.11 Center Forward Slide The center forward slide 1 folds the trim around the interior slide and the inner forward slide above it. The trim fold created during folding should be in the recess in the center forward slide. This is necessary for the folded trim to be held while the inner forward slide runs back into the initial position. -
Page 50: Inner Forward Slide
4.12 Inner Forward Slide The inner forward slide 1 folds the trim around the interior slide. Then the center forward slide folds the trim around the inner forward slide. The inner forward slide holds the folded trim tight when the interior slides are pulled back. - Page 51 Setting the height During the folding sequence the swing clamp presses the interior slide upward against the retracted inner forward slide at half pressure. The height of the inner forward slide also determines the height of the swing clamp and of the interior slide. –...
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Page 52: Hold-Down
4.13 Hold-down The hold-down 1 is manually swung upward and presses the interior slides down against the clamps. At the end of the folding sequence the hold-down is swung into the base position by a pneumatic cylinder. Caution Risk of Injury ! Turn the main switch off. -
Page 53: Causes Of Unequal Edge Intervals
Causes of Unequal Edge Intervals Listed in the table are the contour-determining elements. Seam Segment Trim Side Element Trim Edge upper Interior slide-Swing table upper Interior slide-Swing table upper Inner forward slide upper Position of the clamping table lower Interior slide-Fixed table lower Interior slide-Fixed table The possible causes for unequal edge intervals are listed in the... - Page 54 Possible Cause Effect on Edge Fixed Clamp / Swing Clamp Delrin and rubber damaged • • • • Delrin deflects the needle • • • • • Trim clamp cylinder in the wrong position • Cross clamp cylinder in the wrong position •...
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Page 55: Synchronizer
Synchronizer With the synchronizer first the 2nd position and then the 1st position must be set. The disks 1 and 2 of the synchronizer must be set according to the sketch for the 3rd position ( threading ). Caution Risk of Injury ! Turn the main switch off. -
Page 56: Pneumatics
Pneumatics The operating pressure for the pneumatic system of the sewing unit is set at 6 bar by the maintenance unit. The compressed air monitor 3 switches the sewing unit off when the minimum operating pressures drops below 4.2 bar. Caution Risk of Injury ! Set the compressed air monitor with the sewing unit turned off and with the greatest possible caution. -
Page 57: Maintenance
Maintenance Caution Risk of Injury ! Turn the main switch off. The maintenance work on the sewing unit may only be conducted with the machine turned off ! The maintenance tasks to be conducted by the operating personnel on the sewing unit daily or weekly ( cleaning and lubricating ) are described in Part 1: Operating Instructions Chapter 7.
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