Strobel VEB 200-2, Инструкции механика

Страница: 21 / 54

17
MA_VEB200-2_A3_210511_en.doc
3.4 Looper
3.4.1 Removing and remounting the looper (Fig. 7)
A T T E N T I O N !
Switch off machine electrically!
Release cap screw (3) and pull the looper (10) towards the front.
When remounting the looper (10) make sure that it is completely pushed in and that
it’s positioning surface fits exactly to the looper take-up.
Tighten cap screw (3).
3.4.2 Removing and remounting the looper shaft (Fig. 7)
The looper shaft with ball jointed lever (12) can be taken out after removing the
looper (10) and releasing nut (7) and set collar (11).
3.4.3 Looper deflection (Fig. 3)
The looper deflection is 19 +0.5 mm (control dimension).
3.4.4 Setting the looper (Fig. 8)
In the moment of the loop take-up the looper fingers should be placed 0.1 - 0.2 mm
above the needle, also when a thicker needle is used. The needle should not be
touched!
The horizontal distance from the large looper finger to the needle eye should be 1.5
mm (Fig. 6). On the left side, when the loop is released, the needle should move
centrically through the looper fingers. These values can be set through turning and
moving eccentric bolt (1) (release adjusting screw (2)) and through turning the looper
shaft against connecting rod head (6) (Fig. 7).
Proceed as follows to turn the looper shaft (Fig. 9):
- Release nut (1) on the looper shaft (2).
- Release screws 35) in connecting rod head (4).
- Slightly twist the looper shaft (2) with the open-end spanner.
Check the looper movement through carefully moving the main shaft by means of the
handwheel. Check if all fastening screws are tight!