JUKI LK-1900B series, Руководство инженера

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Adjustment procedures Results of Improper adjustment
1. Loosen the Y feed arm ❹ setscrew ❶ .
2. Push the Y feed shaft ❸ in the direction of the arrow A ⇒ .
3. Loosen the setscrews ❷ (3 pcs.) of the work feed acceptor plate.
Moving the Y feed arm ❹ in the direction of the arrow
➡ , fix the Y feed shaft ❸ to the guide and also fix the work
feed acceptor plate ❺ in the position where no torque is generat-
ed.
4. Let the end planes A of the Y feed shaft ❸ and the Y feed arm
❹ coincide with each other. Fix the Y feed arm ❹ setscrew ❶ .
o
The feeding load becomes too
much and this can be a cause of
feed error.
Adjustment procedures Results of Improper adjustment
1. Loosen the two setscrews ❷ .
2. Make vertical adjustments of the feeder bar rear cover ❶ and
secure a clearance of about 1 mm toward the upper plane of the
work feed presser plate
❹ . Then, tighten the two setscrews ❷ .
3. Move the feeder bar ❺ in the direction of the arrow A and con-
firm that there is a clearance at the notch part of the sewing ma-
chine frame ❸ . If there is no clearance and there is interference
with the sewing machine frame ❸ , the steps of 1. to 2. above
should be repeated again.
(Caution) When tightening the setscrews
❷
, the feeder bar rear
cover ❶ may be moved vertically. Hold the feeder
bar rear cover
❶
firmly while the setscrews
❷
are
tightened.
o
If the clearance is too small
between the feeder bar rear
cover
❶ and the upper plane of
the work feed presser plate ❹ ,
the feeder bar rear cover ❶ will
come in contact with the work
feed presser plate
❹ due to the
effect of vibration during sewing
operation. This will cause noise
and abrasion.
o
If there is no clearance between
the feeder bar rear cover ❶ and
the notch part of the sewing
machine frame
❸ , the feeder
bar rear cover ❶ will come in
contact with the sewing machine
frame
❸ , causing feed error
during sewing operation.