Needle Thread Scissors - DURKOPP ADLER 577 Series Manual

6 Needle thread scissors

6.1 Function sequence
Phase
Initial position
Seam start position
(right end position)
Release of the thread
clamp after sewing
start
Opening the scissors
(left end position)
Catching position
Cutting
and clamping
28
Flow of movements
- Sewing basket lift
- The closed scissors are clamping the thread
- Scissors standing behind the needle
(right end position)
- Sewing basket lowered
- The closed scissors are clamping the thread
- Scissors standing behind the needle
(right end position)
- Sewing start,
After the first 4 -10 stitches the thread clamping
will be releasing.
- The release lever (see pos. 1 on page 34)
covers the shears (loosening of the thread
clamping).
- 5 stitches from the seam end the buttonhole
will be cut up.
- By the descending of the knife block the
scissors will be moved to the left side and
consequently it will be opened.
- The opened scissors will fall down as soon as
the knife block rises
-With the machine stopped the control cylinder
will be moved out.
- The scissors closing lever will close the
scissors, the thread will be clamped and cut.
- The sewing basket will be lifted.
Position of scissors