DURKOPP ADLER 867 Istruzioni operative
867
Spezialnähmaschine
Serviceanleitung
Service Instructions
Instructions de service
Istruzioni per il servizio
Postfach 17 03 51, D-33703 Bielefeld • Potsdamer Straße 190, D-33719 Bielefeld
Telefon +49 (0) 521 / 9 25-00 • Telefax +49 (0) 521 / 9 25 24 35 • www.duerkopp-adler.com
Ausgabe / Edition: Änderungsindex Teile-Nr./Part.-No.:
05/2008 Rev. index: 02.0 Printed in Federal Republic of Germany 0791 867641
D
GB
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Copyright © Dürkopp Adler AG - 2008
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.
GB
Index Page:
Service instructions class 867
(Edition 05/2008)
1. General notes
1.1 Gauges..................................................... 3
1.2 Descriptionofthelockingpositions.................................... 4
1.3 Graduation on the handwheel ....................................... 5
2. Sewing machine
2.1 Positionofthearmshaftcrankonthearmshaft............................ 6
2.2 Upper and lower toothed belt wheel / toothed belt ........................... 7
2.2.1 Position of the upper toothed belt wheel ................................. 7
2.2.2 Position of the lower toothed belt wheel ................................. 8
2.3 Bottom feed and stitch regulator gear .................................. 9
2.3.1 Basicsettingofstitchadjustment..................................... 9
2.3.2 Adjust the 2nd stitch length......................................... 11
2.3.3 Positionofthefeeddoginthethroatplatecutout........................... 12
2.3.4 Feeding motion of the feed dog ...................................... 14
2.3.5 Liftingmotionofthefeeddog ....................................... 15
2.3.6 Feeddogheight ............................................... 16
2.3.7 Balanceweight................................................ 17
2.4 Transmissionlever.............................................. 18
2.5 Needle bar linkage .............................................. 19
2.5.1 Align the needle bar linkage laterally ................................... 19
2.5.2 Needle penetration in feeding direction ................................. 20
2.6 Hook, looping stroke and needle bar height............................... 21
2.6.1 Looping stroke ................................................ 21
2.6.2 Needle bar height .............................................. 22
2.6.3 Distance between hook and needle.................................... 23
2.6.4 Needle guard ................................................. 24
2.7 Bobbin case opening ............................................ 25
2.7.1 General .................................................... 25
2.7.2 Setting of the bobbin case opening .................................... 25
2.7.3 Timing of opening .............................................. 27
2.8 Feeding foot and presser foot ....................................... 28
2.8.1 Feeding foot and presser foot stroke ................................... 28
2.8.2 Stroke motion of the feeding foot ..................................... 29
2.8.3 Sewingfootpressure............................................ 30
2.9 Stitch length limitation ............................................ 31
2.10 Stitch equality of the forward and backward stitch ........................... 32
2.11 Sewingfootlifting .............................................. 33
2.11.1 Mechanical sewing foot lift ......................................... 33
2.11.2 Height of the sewing feet arrested with hand lever........................... 34
2.11.3 Heightoftheliftedsewingfeet....................................... 35
Index Page:
2.12 Thread-guiding parts ............................................ 36
2.12.1 Thread regulator ............................................... 36
2.12.2Threadtake-upspring............................................ 37
2.13 Bobbin winder................................................. 38
2.14 Threadcutter................................................. 40
2.14.1 General .................................................... 40
2.14.2Threadpullingknife............................................. 41
2.14.3 Counter-knife and lower thread clamp .................................. 42
2.14.4 Cutting position with machines having needle repositioning ..................... 44
2.14.5 Cutting position with machines without needle repositioning .................... 45
2.15 Shortthreadcutter.............................................. 46
2.15.1 General .................................................... 46
2.15.2Threadpullingknife............................................. 47
2.15.3 Locking latch for the thread-pulling knife ................................ 49
2.15.4 Counter knife ................................................. 50
2.16 Potentiometerinthearm.......................................... 52
2.16.1 Basic setting without control panel .................................... 52
2.16.2 Basic setting with the control panel V810 or V820 ........................... 53
2.16.3Checkthepotentiometeradjustment................................... 54
2.17 Connections PCB .............................................. 55
3. Oil lubrication
3.1 Hooklubrication ............................................... 56
3.2 Maintenance ................................................. 58
GB
1. General notes
The present service instructions describes the adjustment of the
special sewing machine 867.
ATTENTION !
The operations described in the service instructions must only be
executed by qualified staff or correspondingly instructed persons
respectively!
Caution: Danger of injury !
In case of repair, alteration or maintenance work turn off the main
switch and disconnect the machine from the pneumatic supply system.
Carry out adjusting operations and functional tests of the running
machine only under observation of all safety measures and with
utmost caution.
The present service instructions describes the adjustment of the
sewing machine in an appropriate sequence. Please observe in this
connection that various setting positions are interdependent.
Therefore it is absolutely necessary to do the adjustment following the
described order.
For all setting operations of parts involved in the stitch formation a new
needle without damage has to be inserted.
Machine covers having to be screwed off and on again for checking
and adjusting operations are not mentioned in the text.
Hint:
Some of the shafts of the special sewing machine 867 are provided
with flat spots. This facilitates the adjustment considerably.
In case of all adjustments on flat spots the first screw in rotation
direction is put on such a flat spot.
1.1 Gauges
The locking pin 1 required for adjusting the machine belongs to the
serial equipment of the machine. It is in the accessories and can be put
at the bottom side of the oil pan.
3
1
1.2 Description of the locking positions
With the locking pin 1 and the arresting grooves 2 and 3 in the arm
shaft crank 4 the sewing machine can be arrested in two adjusting
positions.
Position I = Locking pin Ø 5 mm for large groove
= Looping stroke, needle bar height
Position II = Locking pin Ø 3 mm for small groove
= Needle bar at its upper dead center, Graduation on
the handwheel
4
2
4
1
3
1.3 Graduation on the handwheel
The handwheel 2 has graduation printed on it.
Certain settings shall be done following to the position of the
handwheel.
–Turn the handwheel until the degree mark mentioned in this manual
points to the index 3.
–Carry out the described adjustment.
Setting the Handwheel
–Arrest the machine in position II by using the locking pin Ø 3 mm.
–Loosen the fastening screw for the handwheel through opening 1.
–Turn the handwheel so that the degree mark “0" points to the
index 3.
–Tighten the fastening screw again.
–Set the handwheel to 50° and tighten the second fastening screw.
5
GB
1
2
3
2. Sewing machine
2.1 Position of the arm shaft crank on the arm shaft
Caution: Danger of injury !
Turnthemainswitchoff!
Check and set the position of the arm shaft crank only when the
machine is switched off.
Standard checking
The arm shaft crank 1 is fastened on the arm shaft 4 with the three
screws 2. The screws must sit on the flat spot 3.
Correction
–Loosen screws 2 at the arm shaft crank.
–Twist arm shaft crank 1 on the shaft in such a way that
the screws 2 sit on the flat spot 3.
–Push arm shaft crank 1 axially to the right as far as it will go.
–Tighten screws 2.
6
21
1
2
3
4
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19
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