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7-14-2.7 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.
c) For the adjustment of this knife engaging presser,
after removing the slide plate and loosening the
lock nut (No.4), use the 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>
5.5～
<1>
<4>
1.5～2.0mm
<1>
<1>
<2>
- 32 -
<2>
6mm
2.5mm
<5>
<2>
3mm
<4>
<5>
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