– 5 –
1. Set the amount of feeding (feed dial graduation) at 0.
2. Loosen the setscrew
of the vertical feed bracket shaft
and the
setscrew
of the horizontal feed bracket shaft
.
3. The feed dog height and gradient are changed when both shafts of
the vertical feed bracket shaft
and the horizontal feed bracket
shaft
are turned by means of a screwdriver.
4. After adjustments, firmly tighten the screws that have been loosened.
(Screw tightening should be done under the condition that the
setscrews
and
are pushed against the vertical feed bracket
shaft
and the horizontal feed bracket shaft
.)
(Cautions) 1. In regard to the locus of standard feeding, the throat
plate and the feed dog rise almost horizontally when
the throat plate rises.
2. The direction of the engraved marker dots for the
vertical feed bracket shaft
and the horizontal feed
bracket shaft
should be adjusted on the right side
(operator side).
3. If there is rattle in the vertical feed bracket shaft
and the horizontal feed bracket shaft
, this can be
a cause of unusual sound and improper linearity.
o If the gradient of the feed dog is
adjusted for either shaft only, the
feed dog height may be changed.
Adjustments are needed for both
shafts in all cases.
o According to the shaft adjusting
position, the position of feed dog
motion may be shifted.
I n s u c h a c a s e , l o o s e n t h e
tightening screw
of the X feed
arm
to adjust the position of
motion.
o According to the result of feed dog
height or gradient adjustments,
there is possibility of interference
with the thread trimmer unit.
o When the feed dog height is set
above the standard level, the
feeding power is improved.
Instead, there can be problems of
presser jumping at high speed and
flaws in light materials.
o If the feed dog height is too much,
a return will be given to the front
side (Section C) of the feed dog.
As a result, the behavior of
material feeding may be affected.
If the height has to be increased
for an unavoidable reason, the
amount of return can be reduced
by adjusting the gradient of the
feed dog to raise its tip.
0.8mm
DDL-9000A-
S,
A
1.2mm
DDL-9000A-SH
C
Adjustment Procedure
Results of Improper Adjustment
Summary of Contents for DDL-9000A
Page 14: ... 10 4 Feed locus and phase 1 Timing standard 2 Timing fast 3 Timing slow Standard Adjustment ...
Page 32: ... 28 8 Adjustment of the amount of feeding 4 Optional switch Standard Adjustment ...
Page 60: ... 56 11 Thread trimming unit 7 Replacement of the moving knife Standard Adjustment ...
Page 66: ... 62 11 Thread trimming unit 10 Adjustment of the drive arm stopper Standard Adjustment ...
Page 70: ... 66 12 Adjustment of the wiper DDL 9000A WB OB 2mm 1mm Standard Adjustment ...
Page 72: ... 68 13 Adjustment of feed lever pressure B A Feed lever Standard Adjustment ...
Page 112: ...MEMO ...
