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4.2.4 Replacing the knife
- Fig. 22 -
- To replace the knife, move the knife box
knurling wheel
and remove from the stitching head.
- Fig. 23 -
- Push the knife slider
Make sure that the pressure spring doesn't strip.
- Change the knife (see following chapter)
- Fig. 25 -
- Replace knife slider
slider with a screwdriver, and pushing it into the knife box. Make sure that the pressure spring is
not bent.
- Fig. 22 -
- Place knife box
on the guide
- Return knife box to the desired position by turning the knurling wheel.
4.2.4.1 Rotating/Changing the flat knife
- Fig. 24 -
The flat knife has 2 cutting edges. Each cutting edge can be used three times (each slightly
turned) by means of rotation.
- Loosen and unscrew fastening screw
- Rotate or replace flat knife
4.2.4.2 Replacing the circular knife
- Fig. 24 -
- Loosen the clamping screw
- Press new circular knife completely into the seat in the knife box.
- Adjust circular knife.
4.2.4.3 Adjusting the circular knife
- Fig. 26 -
The circular knife is adjusted so as to ensure clean cutting of the wire.
When the knives are mounted, set the clearance between the flat and circular knives by carefully
"levering" with a screwdriver.
- Loosen clamping screw
with a screwdriver.
- Tighten clamping screw
If the distance between the knives is set too close the knife slider 5 may block and cause a wire
jam.
Hohner Maschinenbau GmbH
completely away from the guide
out of the knife box
in the knife box
(arrow B), compressing the pressure spring of the knife
.
.
and tighten fastening screw
and remove the circular knife
and position circular knife
.
(arrow A)
.
.
exactly against the flat knife by "levering"
ST 55 L
Servicing
by turning the
39
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