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(10) Adjusting the thread hook
1. Loosen setscrews
❶
.
2. Shift the air cylinder base (general asm.)
❷
in direction A. Temporarily tighten setscrews
❶
.
* When sliding the air cylinder base (general asm.)
❷
in the direction
A
, the thread hook
❻
moves to
the direction
C
.
When sliding the air cylinder base (general asm.)
❷
in the direction
B
, the thread hook
❻
moves to
the direction
D
.
3. In this state, fix the switch
❸
of topmost solenoid valve with the ON state.
4. Turn the handwheel to align the tip of left needle
❹
with the center of looper
❺
.
5. Temporarily tighten setscrews
❼
and
❽
. Adjust the clearance provided between the left needle
❹
and the thread hook
❻
to 0 to 0.05 mm when the left needle
❹
and the top end of thread hook
❻
are
aligned in lateral direction. Then, tighten setscrew
❼
and setscrew
❽
in the written order.
* If setscrew
❽
is tightened first, the thread hook
❻
will be likely to turn clockwise, making the correct
positioning of the thread hook difficult.
(Caution) Carry out adjustment with thread hook
❻
shifted to the right by its backlash.
❸
When the needle moves in
the descending direction.
1/2
❹
❺
❼
❽
A
❶
❷
B
❻
❹
❺
0 to 0.05 mm
(Clearance)
C
D
WARNING :
As the work is performed while the power is ON, never touch the switches other than the necessary
one so as to prevent accidents caused by the malfunction of switches.
