Adler 743-121 Operating Instruction

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Preface and General Safety Notes

Part 1: Operating Instructions for the 743-121

1. Product Description

1.1 Technical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.2 Patents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.3 Optional Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2. Operating the Sewing Unit

2.1 Needles and Threads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 Threading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3 Setting Thread Tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.4 Changing the Configuration Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.5 Dart Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.6 Dart Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.7 Setting the Insertion Depth of the Folding Table . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.8 Setting the Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.9 Positioning the Sewing Pieces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.10 Sewing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3. Maintenance

3.1 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.2 Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

1. Product Description

DÜRKOPP 743-121

The

single-point darts

Maximum seam l en gt h 1 50 mm .

The unit is e qu i pp ed wi t h a ma c hi n e h ea d i n do ub l e chain stitch

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execution. A configuration set ap pr o pr iate to the seam c on fi g ur a ti o n h ol d s

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and guides the material. The seam leng th c on trol occurs eit he r v i a l ight barrier or

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programmin g, as d esi r e d. Seam securing at the beginning and end of the seam through stitch

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condensing i n t he ma te r i al a nd th rea d c h ai n Thread trimming system: Controlled chain trimmer

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Transport carriage drive via step motor.

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The complete control of the sewing unit occurs through a

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micro-computer. It assumes the control tasks, monitors the sewing process and signals operating errors and malfunctions.

An electronic thread monitor prevents a renewed starting of the

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sewing procedure by thread breakage or when the thread is used up.

is a sewing un i t f or t he au to ma te d se wi n g o f

with straight or cu r ved s ea m co nf i gu r at ion s .

1.1 T echnical Specification

1.2 Patents

Machine head: Class 935 - 17 1 -100 Needle system: 934 SIN

Needle thickness: Nm 90 Threads: As needle and bobbin thread spun

monofilament sewing threads Stitch type: 401 Double ch ain s ti t c h Stitch number: 4.800 / min

Stitch length: 2,2 mm Stitch cond en s i ng : 1,0 mm

Sewing len gt h: 150 mm Folding tabl e : 0 - 10° adjustable

Operating pre s s ure: 6 ba r Air consumption: approx. 5 NL per work cycle

Nominal voltage: 0743 000524 3 ~ 380 - 400 V + N, 50 Hz

0743 000574 3 ~ 220 - 230 V, 50 Hz

0743 000644 3 ~ 220 - 230 V, 60 Hz The sewing unit is delivered with

appropriate to th e n om i na l v oltage.

one

of the listed v ol t ag e s e ts

Following patents and registered utility models apply:

Status September 1993

42 28 943

1.3 Optional Equipment

0794 013222 0794 000091

0794 000332

0794 013333 0794 013444

0797 003031

2. Operating the Sewing Unit

2.1 Needles and Threads

Needle system: 934 SIN Needle thickness: Nm 90

Threads: As needle and bo bb i n t hr e ad s pu n

Bundle cla mp wi t h s w i ng ar m an d h ol d er p i pe hr. Supporting ta bl e ( small).

(only in con j un c ti o n w i th th e b undle clamp) Remover dev i c e f or s m oo th i ng th e b l own-out

sewing pieces. (only in con j un c ti o n w i th th e b undle clamp)

Blower pipe from the top or the right. Supporting ta bl e

(when using in-house bundle clamp wagons) Compressed ai r c o nn ec t i on ho s e, c on ne c to r

plug, connector s o ck et an d h os e c l am p.

sewing threads

2.2 Threading

Caution Risk of Injury !

Turn main switch off. Upper and lowe r th r eads m ay o nly b e t hre ad ed wi t h t he ma c hin e switched off. The configuration set must be in the left end position.

Threading lower thread (Bobbin thread)

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Place thread spool 2 on the thread stand.

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Alternatingly feed the thread through all 4 guide eyes of the take off arm 1.

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Unlock the slider bed and pull to the side.

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Guide the thread through the thread tensioner 4 + 5 and the thread guide 12.

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Swing up the flap 13 over the thread take up disk. Guide the thread to the right past the pins.

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Lead the thre ad th rou gh the hook 14 and pul l t i gh t.

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Close the flap 13 over the thread take up disk. The thread mu s t b e i n th e f l ap s l ot .

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Return the slider bed to its initial position. Hereby the l ea f s p r i ng mu s t lock in place.

Threading the upper thread (Needle thread)

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Place thread spool 3 on the thread stand.

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Alternatingly guide the thread through all 4 guide eyes of the takeoff arm 1.

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Guide the thread through the thread tensioner 6 + 7, thread guide 9, check sp ri ng 10 an d thread monitor 11.

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Lead the thread through the needle and the thread clamp. Cut of the excess at the thread trimmer.

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