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(2) Adjusting the rocking thread take-up
1. Length of the rocking thread take-up
(1) Dimension A from the center of the shaft to the thread hole face of rocking thread take-up
length of rocking thread take-up
2. Position of the rocking thread take-up
(1) Install so that rocking thread take-up
Flush
3. Timing of the rocking thread take-up
(1) It is the standard timing that rocking thread take-up
its lowest position as well when the needle bar is in its lowest
position.
Timing of rocking thread take-up
adjusting the position of rocking thread take-up ball arm
.
4. Relation between the timing of rocking thread take-up and
the needle thread loop
(1) When using the excessively stretchable thread or the hard-
to-stretch thread, the size of needle thread loop can be
changed by changing the timing of rocking thread take-up
.
(2) Relation between the timing of the rocking thread take-up
and the size of needle thread loop is as shown in the
table on the next page.
(The relation becomes reverse when using the needle bar
thread take-up = standard seams and when it is not used =
soft seams. So, be careful.)
Standard Adjustment
.
Standard seams
Soft seams
is flush when the needle bar is in its lowest position.
is in
is performed by
– 8 –
is the standard
Unit : mm
Dimension A
90
98
↑
Anti-operator's side
4mm
Operator's side
↓
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