– 65 –
[Type
I
]
1. When the thread trimmer solenoid is pulled, the amount of protrusion
is 0.7mm to 1.3mm between the tip
of the thread trimming shaft
and the end plane of the bed.
(Caution) Confirm that a clearance is secured between the cam
follower piece
and the end plane of the thread
trimming cam
to 2mm. (Refer to 3.-(11)-1).)
2. The support rubber
of the stopper plate
should be made to
contact so that it clogs the thread trimming shaft hole
of the bed.
(Move the bed stud A to secure a light contact.)
[Type
II
]
1. When the thread trimmer solenoid is pulled, the amount of protrusion
is 1.2mm to 1.8mm between the tip
of the thread trimming shaft
and the end plane of the bed.
(Caution) Confirm that a clearance is secured between the cam
follower piece
and the end plane of the thread
trimming cam
to 2mm. (Refer to 3.-(11)-1).)
*
At the time of thread trimming stopper assembly, this work should
be carried out in the center of the oblong hole in the bed stud A.
Adjustment Procedure
Results of Improper Adjustment
o If the amount of protrusion is too
small, the action sound of the
thread trimmer becomes large.
o If the amount of protrusion is too
large, the amount of picker action
becomes small and the lost
motion of bobbin may occur.
(If the amount of protrusion is too
excessive, short cutting of the
needle thread may arise. This is
because the needle thread is
disengaged from the picker.)
o If the amount of protrusion is too
small, the action sound of the
thread trimmer becomes large.
o If the amount of protrusion is too
large, the amount of picker action
becomes small and the lost
motion of bobbin may occur.
(If the amount of protrusion is too
excessive, short cutting of the
needle thread may arise. This is
because the needle thread is
disengaged from the picker.)
Summary of Contents for DDL-9000B-DS
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 58: ... 54 11 Thread trimming unit 8 Replacement of the moving knife Standard Adjustment ...
Page 70: ... 66 12 Adjustment of the wiper DDL 9000B WB 2mm 1mm Standard Adjustment ...
Page 112: ...MEMO ...