Trimming And Clamping Device For The Needle Threads - Duerkopp Adler 745-22 Service Instructions Manual

11.14 Trimming and Clamping Device for the Needle Threads

Function
–
After the seam end and during pulling forward of the thread the
long stroke of the cylinder 1 is switched on.
The thread catcher 5 lowers and takes up the needle threads.
–
After a set period the thread catcher 5 rises quickly (spring return
of the cylinder).
The needle threads are clamped onto the clamping piece 4 and
trimmed on the knife 2.
–
After the first stitches of the next seam the clamped needle
threads are released.
The release is made by the short stroke of the cylinder 1.
–
Through the spring-suspended clamping piece 4 the thread
catcher 5 lays level onto the knife 2.
The knife 2 thus lies automatically for cutting.
A setting is not required.
Changing the knife and thread catcher
After a certain period of operation the knife 2 loses its sharpness. The
blunt knife must be removed for grinding.
By a change to a different needle clearance the thread catcher 5 must
also be changed.
1
2
Caution Risk of Injury !
Turn the main switch off.
Remove the knife 2 and thread catcher 5 only with the main switch
turned off.
–
Loosen screws 3.
–
Remove the thread catcher 5 or knife 2.
–
Insert a new thread catcher or reground knife.
–
Tighten screws 3.
3
4
5
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