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7. MECHANICAL DESCRIPTIONS
S-7200C
64
3） Thread trimming complete and operation stopped
1. Extension spring <1> Thread trimmer lever [1] Thread trimmer lever
2. Thread trimmer cam lever <2> Thread trimmer connecting rod [2] Forked shaft
3. Solenoid lever <3> Thread trimmer holder [3] Slide block
4.
Solenoid plunger <4> Movable knife [4] Roller
4） Thread trimming safety device
If the movable knife does not return to its original position, the operation shown in the illustration below ensures that the
movable knife will return to a position where it will not touch the needle.
1. Thread trimmer cam
2. Return roller
3. Slide block
4. Forked shaft
5. Thread trimmer lever
6. Thread trimmer connecting rod
7. Thread trimmer holder
8.
Movable knife
4348M
4347M