DURKOPP ADLER 540-100-1, Manual Complete

Page: 221 / 234

11. Needle thread scissors
11.1 Function sequence
Motional sequence
Initial position
–
Sewing basket lifted.
–
The closed scissors holds the thread.
–
Scissors is swivelled in.
Sewing position
–
Sewing basket lowers.
–
The closed scissors holds the thread clamped.
–
Scissors is swivelled in.
Release of the needle thread
after sewing start
–
Sewing start
–
The needle thread is laid in the lip there.
–
The path until the scissors opens is adjusted under T1.1.3.
–
The scissors is swivelled aside by a block. The bolt of the movable
part of the scissors runs against a quare and opens the scissors.
–
The needle thread is released.
–
The scissors is in its left end position now.
Catch position
–
The open scissors swivels in three stitches before the last stitch
(knotting stitch).
Cutting and clamping
–
When the machine has come to a standstill, the cage lifting is
started.
–
The main thread tension opens.
–
The needle thread puller pulls the thread.
–
The scissors is closed by the closing block cylinder. The needle
thread is clamped and cut.
–
The needle thread is drawn under the fabric by the motion of the
bobbin thread knife.
–
The bobbin thread is laid in the thread rest and cut.
–
The sewing basket lifts.
33
3