Trimming And Clamping Device For The Needle Threads; Function - DURKOPP ADLER 745-34 Speedpocket Service Instructions Manual

2.8

Trimming and clamping device for the needle threads

2.8.1

Function

2
40
1
Caution: Danger of injury!
Switch the main switch off.
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 stitches 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
–
Actuate the pneumatic switch at the machine head.
4 3