26
12) Adjusting upper thread holding device
A. Check that upper thread holding pin cylinder knuckle
①
is
positioned in the middle of the way that upper thread
follows.
B. If the knuckle
①
is not positioned that way as mentioned in
A., unfasten the two clamp screws
③
of upper thread
holding bracket
②
, position the knuckle in the middle as
mentioned in A, and then fasten clamp screw
③
firmly.
C. It is standard that the end of knuckle
①
stays 4.3mm away
from Arm
④
.
D. To adjust the clearance between nut and Arm, unfasten two
nuts of pin cylinder
⑤
, correct the clearance, and then
fasten the two nuts
⑥
firmly.
[ Fig. 27 ]
4.3mm
①
①
②
③
④
⑤
⑥
11) Adjusting up-down speed of upper feed plate
A. If the holder
②
of the speed controller
①
is turned clockwise as in the figure, down-speed will decrease. If the holder is turned
counter-clockwise, the speed will increase. Adjust at a proper speed and fix with clamp screw
③
.
(Make a balanced adjustment on the left and right sides.)
[ Fig. 26 ]
②
①
③