Duerkopp Adler 745-26 User Manual

Contents Page:
Part 3: Service Instructions Cl. 745 - 26 / 28
1. General
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Transport Carriage
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Rollers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Forward End Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Rear End Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4 Timing Belt Tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5 Replacing the Timing Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3. Cl. 745-28: Folder (Work Method A)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
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 to the Center Knife . . . . . . . . . . . . . . . . . . . 14
3.4 Guide Plates on the Folder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4. Cl. 745-26 and -28: Folder and Gripping Folder (Work Method B,D,F)
. . . . . . . . . . . . 16
4.1 Stroke Movement of the Folder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.2 Aligning the Folder to the Center of the Pocket Opening . . . . . . . . . . . . . . . . . . . . . 18
4.3 Position of the Folder to the Needles and to the Center Knife . . . . . . . . . . . . . . . . . . . 19
4.4 Guide Plates on the Folder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.5 Support Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.6 Seat for the Gripping Folder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5. Cl. 745-26 u. -28: Transfer Devices for Work Method B/C
. . . . . . . . . . . . . . . . . . . 29
6. Device for Cutting Open the Piping Ends (Work Method C, F)
. . . . . . . . . . . . . . . . 33
6.1 Setting the Swing Range of the Gripping Folder . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.2 Aligning the Feed Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.3 Replacing Piping Knives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.4 Setting the End Positions of the Piping Knives . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7. Positioning Device for Work Method D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
7.1 Feed for the Pocket Bags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8. Transfer Device for Work Method F
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.1 Base Setting of the Aligning Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.2 Setting Check, Speed Regulating Valves and Safety Switch . . . . . . . . . . . . . . . . . . . 47
8.3 Sewing Trial to a Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
8.4 Error Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
9. Transport Clamps and Flap Clamp
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
9.1 Clearance of the Transport Clamps to the Folder Sole . . . . . . . . . . . . . . . . . . . . . . . 50
9.2 Stroke Height of the Transport Clamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
9.3 Clearance of the Flap Clamps to the Slider Plate . . . . . . . . . . . . . . . . . . . . . . . . . . 53
10. Reflected Light Barrier for Flap Scanning
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
11. Marker Lights
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
12. Knife Brackets for Incisions at the Corners
. . . . . . . . . . . . . . . . . . . . . . . . . . . 59
12.1 Adjusting the Position of the Corner Incisions . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
12.2 Replacing Corner Knives (745-26) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
12.3 Adjusting Knife Brackets for Angled Corner Incisions (745 - 28 ) . . . . . . . . . . . . . . . . . 63

Duerkopp Adler 745-26 Specifications

General

Brand	Duerkopp Adler
Model	745-26
Category	Sewing Machine
Language	English

Summary

Transport Carriage Setup

Transport Carriage Forward End Position

Setting transport carriage forward limit switch for correct needle clearance.

Transport Carriage Rear End Position

Setting transport carriage rear limit switch and pneumatic valve.

Cl. 745-28 Folder Setup (Work Method A)

Cl. 745-26/-28 Folder & Gripping Folder (Work Method B,D,F)

Folder Alignment to Pocket Opening

Aligning the folder to the center of the pocket opening.

Folder Position Relative to Needles and Knife

Ensuring correct positioning of the folder relative to needles and center knife.

Piping Ends Cutting Device (Work Method C, F)

Piping Knives End Position Setting

Positioning Device for Work Method D

Transfer Device for Work Method F

Sewing Trial to Pattern Verification

Performing a sewing trial to verify settings and pattern accuracy.

Common Error Correction

Correcting common errors in flap alignment and sewing.

Transport Clamps and Flap Clamp

Transport Clamp to Folder Sole Clearance

Reflected Light Barrier for Flap Scanning

Corner Incision Knife Brackets

Corner Incision Position Adjustment

Setting the precise position of corner incisions relative to needles.

Angled Corner Incision Knife Brackets (745-28)

Adjusting knife brackets for angled corner cuts.

Machine Head Adjustments

Crank Pin on Arm Shaft Adjustment

Setting the eccentric crank pin for needle bar stroke.

Needle Bar Link Adjustment

Adjusting the needle bar link for switching, setting to needle bars, and removal/attachment procedures.

Hook Shaft Height Setting

Setting the correct height of the hook shaft using a gauge.

Hook Drive Play & Lubrication

Looping Stroke Timing

Setting the looping stroke using a timing pin.

Needle Holder Height Adjustment

Setting the correct height of the needle holders.

Hook Point to Needle Clearance

Setting clearance between hook points and needles.

Needle Guard Adjustment

Center Knife Position and Movement

Setting the position and movement of the center knife.

Needle Thread Trimming & Clamping

Underthread Trimming & Clamping

Maintenance Schedule