DURKOPP ADLER 911 Produkthandbuch

911

CNC-controlled sewing unit with large

sewing area

Operating Instructions

Installation Instructions

Service Instructions

Postfach 17 03 51, D-33703 Bielefeld Potsdamer Straße 190, D-33719 Bielefeld

Telefon +49 (0) 5 21/ 59 25-00 Telefax +49 (0) 5 21/ 9 25 24 35 www.duerkopp-adler.com

Ausgabe / Edition: Änderungsindex Teile-Nr./Part.-No.:

08/2010 Rev. index: 00.0 Printed in Federal Republic of Germany 0791 911001

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.

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.

The instruction manual is intended to complement existing national

accident prevention and environment protection regulations.

The instruction manual must always be available at the machine/sewing

unit.

The instruction manual must be read and applied by any person that is

authorized to work on the machine/sewing unit. This means:

–Operation, including equipping, troubleshooting during the work

cycle, removing of fabric waste,

–Service (maintenance, inspection, repair) and/or

–Transport.

The user also has to assure that only authorized personnel work on the

machine.

The user is obliged to check the machine at least once per shift for

apparent damages and to immediatly report any changes (including the

performance in service), which impair the safety.

The user company must ensure that the machine is only operated in

perfect working order.

Never remove or disable any safety devices.

If safety devices need to be removed for equipping, repairing or

maintaining, the safety devices must be remounted directly after

completion of the maintenance and repair work.

Unauthorized modification of the machine rules out liability of the

manufacturer for damage resulting from this.

Observe all safety and danger recommendations on the machine/unit!

The yellow-and-black striped surfaces designate permanend danger

areas, eg danger of squashing, cutting, shearing or collision.

Besides the recommendations in this instruction manual also observe

the general safety and accident prevention regulations!

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. Before putting into service also read the safety rules and

instructions of the motor supplier.

3. The machine must be used only for the purpose intended. Use of

the machine without the safety devices is not permitted. Observe all

the relevant safety regulations.

4. When gauge parts are exchanged (e.g. needle, presser foot, needle

plate, feed dog and bobbin) when threading, when the workplace is

left, and during service work, the machine must be disconnected

from the mains by switching off the master switch or disconnecting

the mains plug.

5. Daily servicing work must be carried out only by appropriately

trained persons.

6. Repairs, conversion and special maintenance work must only be

carried out by technicians or persons with appropriate training.

7. For service or repair work on pneumatic systems, disconnect the

machine from the compressed air supply system (max. 7-10 bar).

Before disconnecting, reduce the pressure of the maintenance unit.

Exceptions to this are only adjustments and functions checks made

by appropriately trained technicians.

8. Work on the electrical equipment must be carried out only by

electricians or appropriately trained persons.

9. Work on parts and systems under electric current is not permitted,

except as specified in regulations DIN VDE 0105.

10. Conversion or changes to the machine must be authorized by us

and made only in adherence to all safety regulations.

11. For repairs, only replacement parts approved by us must be used.

12. Commissioning of the sewing head is prohibited until such time as

the entire sewing unit is found to comply with EC directives.

13. The line cord should be equipped with a country-specific mains

plug. This work must be carried out by appropriately trained

technicians (see paragraph 8).

It is absolutely necessary to respect the safety

instructions marked by these signs.

Danger of bodily injuries !

Please note also the general safety instructions.

Contents Page:

Part 3: Service instructions class 911

(Edition 08/2010)

1. General information

1.1 Gauges..................................................... 4

1.2 Descriptionofthemarkingpositions................................... 4

2. Sewing machine, top

2.1 Positionoftheneedlebarcrankonthearmshaft........................... 5

2.2 Position of the top sprocket belt wheel ................................. 6

2.3 Position bottom sprocket belt wheel ................................... 7

2.4. Aligningneedlebarcrank.......................................... 8

2.5 Hook,loopstrokeandneedlebarheight ................................ 9

2.5.1 Loop stroke .................................................. 9

2.5.2 Needlebarheight .............................................. 10

2.5.3 Distance between hook and needle.................................... 11

2.5.4 Needle guard at the hook .......................................... 12

2.5.5 Needleguide ................................................. 13

2.6 Bobbin housing elevator .......................................... 14

2.6.1 General..................................................... 14

2.6.2 Bobbin housing elevator path ....................................... 14

2.6.3 Elevationtime................................................. 16

2.7 Sewingfootelevation............................................ 17

2.7.1 Checking the lift position drive ...................................... 17

2.7.2 Settingthelightbarrier........................................... 18

2.7.3 Settingtheleftstopscrewoftheliftdrive................................ 19

2.7.4 Setting the foot lift according to the needle bar lift .......................... 20

2.7.5 Foot height .................................................. 22

2.7.6 Referencelightbarriersewingaxis.................................... 24

2.8 Threadguidingparts............................................. 25

2.8.1 Threadregulator............................................... 25

2.8.2 Threadtakeupspring............................................ 26

2.9 Shortthreadcutter.............................................. 28

2.9.1 General..................................................... 28

2.9.2 Lockingcatchforthreaddrawcutter................................... 29

2.9.3 Threaddrawcutter.............................................. 30

2.9.4 Counter cutter ................................................ 32

2.9.5 Cuttingposition................................................ 34

3. Oil lubrication

3.1 Hooklubrication............................................... 36

4. Maintenance ................................................. 37

1. General

These service instructions describe how to set up the special CNC

controlled large field 911 sewing unit.

IMPORTANT!

The tasks described in these service instructions must only be carried

out by qualified or appropriately trained people.

Caution: Danger of injury!

Turn off the main switch for repair, conversion and maintenance work

and disconnect the machine from the pneumatic supply system.

Only carry out adjustment work and function tests when the machine

is running with the greatest care and observing all safety measures.

These service instructions describe how to set the sewing unit up in a

practical order. With this it must be noted that different setting

positions depend on each other. Therefore, perform the settings in the

order described.

A new, perfect needle must be used for all adjustment work on stitch

creating parts.

Machine covers that must be unscrewed and screwed back on again

for inspection and adjustment work are not mentioned in the text.

Important

On the 911 sewing unit some shafts have flat spots that make it

considerably easier to adjust the machine.

For all adjustments on the flat spot each time the first screw is

screwedinthedirectionofrotationontheflatspot.

The hand wheel is replaced by crank 1 on the arm cover to turn the

machine into the different setting positions.

1.1 Gauges

The locking pin 1 required to set the sewing unit is provided as

standard with the machine. It is included with the machine

1.2 Description of the marking positions

With the locking pin 1, the sewing machine can be locked in two

setting positions in the marking grooves 2 and 3 in the needle bar

crank 4.

Position I = Ø 5 mm locking pin for large groove

= loop stroke, needle bar height

Position II = Ø 3 mm locking pin for small groove

= needle bar at top dead centre

2. Upper part of sewing machine

2.1 Position of the needle bar crank on the arm shaft

Caution: Danger of injury!

Turn off the main switch.

Only check and adjust the position of the needle bar crank when the

sewing unit is switched off.

Adjustment and inspection

The needle bar crank 1 is fixed to the arm shaft with the two screws 2.

The screws must be seated on the flat spot 3.

To adjust

–Undo grub screws 2 on the needle bar crank.

–Turn the needle bar crank on the shaft so that the screws 2 are

seated on the flat spot 3.

–Push the needle bar crank axially to the right until it will go no

further.

–Screwupgrubscrew2.

2.2 Position of the top sprocket belt wheel

Caution: Danger of injury!

Turn off the main switch.

Only check and adjust the position of the top sprocket belt wheel

when the sewing unit is switched off.

Adjustment and inspection

The sprocket belt wheel 2 is fitted to the arm shaft 4 with two grub

screws 3. The screws must be seated on the flat spot 1.

To adjust

–Undo the grub screws 3 on the sprocket belt wheel.

–Turn the sprocket belt wheel until the grub screws sit on the flat

spot 1 of the arm shaft 4.

–Screw up the grub screws 3 on the sprocket belt wheel.

43 2 1

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