7-9-2.7 Adjustment Of The Knife Engagement - Mitsubishi PLK-E2010R Instruction Manual

Electronic pattern sewing machine
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7-9-2.7 Adjustment of the knife engagement

1) The standard position for the movable and
stationary knife
The standard mutual position for the movable
(No.1) and stationary (No.2) knife is as shown on
the figure.
2) Adjustment of the amount for the knife
engagement.
Activate the thread trimmer air cylinder, and rotate
the upper shaft. The movable knife (No.1) will
rotate with the thread trimmer cam. When the
edge of movable knife (No.1) is reached at most
left position, the amount if the engagement with
the stationary knife (No.2) becomes 1.5mm to
2.0mm.
This is the standard condition. For this adjustment,
loosen the set screw (No.4) of the driving crank
(No.5), then move the driving crank (No.5) to have
the proper engagement.
After the adjustment, tighten the set screw (No.4)
of the driving crank (No.5) securely.
3) Adjustment of the engaging presser for the knives
a) The engaging presser for the movable (No.1)
and stationary knife (No.2) can be controlled with
adjusting the height of the stationary knife
(No.2). When the movable knife (No.1) is
rotated, the contact of the both knives starts
from the position where the distance between
the edge of the stationary knife (No.2) and the
cut out line of the movable knife (No.1) is 3mm.
This is the standard condition.
b) If the trimming condition is not sharp enough to a
bigger thread, it can be improved with increasing
the knife engaging presser a little bit.
c) For the adjustment of this knife engaging
presser, loosen the lock nut (No.4), then
adjusting screw (No.5). If tighten the adjusting
screw (No.5), the knife engaging presser
becomes tight and if loosen the adjusting screw
(No.5), it becomes loose. After the adjustment,
tighten the lock nut (No.4) securely.
3)
1)
4) 5)
1)
- 34 -
2)
5.5 to
6mm
2.5mm
1.5 to 2.0mm
2)
1)
2)
4)
5)

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