
43
8.11) Trimmer
8.11.1) Trimming Order
When the pedal is stepped backward during sewing, trimming is conducted. The following is the trimming order.
1) When a trimming signal is entered, as in Figure (A), the trimming roller lever
①
is located at the lowest part
of the curved line of the trimmer cam. In this case, the moving blade
④
is parted from the fixed blade
③
as in
Figure (B) and conducts a rotary movement toward the opener after passing above the bobbin.
2) As in Figure (C), the trimmer cam conducts the rotary movement and the trimmer roller lever
①
contacts the
cam. At this moment, the moving blade
④
holds the lower and upper threads as in Figure (D), and performs
rotary movement toward the fixed blade
③
.
3) When the trimmer roller lever
①
and the trimmer cam
②
's hole
⑤
are in a line as in Figure (E), the moving
blade
④
trims the thread by contacting with the fixed blade
③
as in Figure (F).
[Fig. 8-17]
Trimmer Type-A
Trimmer Type-B
②
①
①
①
②
②
⑤
③
③
③
④
④
④
<A>
<B>
<C>
<E>
<F>
<E>
<F>
<D>
<C>
<D>
<A>
<B>
①
④
①
②
②
③
④
①
②
③
④
⑤
Содержание KM-1170BLX
Страница 2: ......
Страница 14: ...14 Fig 4 5 Thread trimming ...