2.8 Trimming and clamping device for the needle threads
2.8.1 Function
Caution: Danger of injury!
Switch off the main switch.
Check knife and thread catcher only with the sewing unit
switched off.
Function
–
The cylinder 2 is switched on after the seam end and during the
feed to the corner knives.
The thread catcher 3 is lowered and takes the needle threads up.
–
After a preset time the thread catcher shoots up.
The needle threads are clamped at the clamping collar 1 and cut
off by knife 4.
–
After the first s titches of the next seam the clamped needle threads
are released.
–
By means of the springy clamping sheet 1 the thread catcher 3
abuts flat on the knife 4. Thus, the knife is automatically in parallel
position.
Function check
–
Call up the adjustment and test program “Selecting the output
elements” (see Programming Instructions, chapter 7.4.5).
–
Select the output element “y1”.
–
Pull the needle threads to the back.
–
Engage and disengage the output element by pressing the function
key “F4”.
–
Check whether the threads are neatly clamped and cut.
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