JUKI MS-3580 Serie Manual De Instrucciones página 103

Model without differential feed
7
4 ・ 5 ・ 6
Right and left
directions
!3
Up-down
direction
!0
9
8
1 ・ 2 ・ 3
!1
!2
− 31 −
(3) Adjustment of longitudinal movement of
the looper without differential feed
Loosen the setscrews 7 (4 pcs.) and remove the
1)
cylinder side cover 8 .
Loosen the setscrew !0 of the ball joint 9 with
2)
a screwdriver, and adjust the forward/reverse
movement by moving the setscrew !0 forward or
backward.
After adjustments, mount the cylinder side cover 8 ,
3)
and tighten the setscrews 7 .
™ When reducing the front and rear momentum
amount of the looper, move the ball joints 9
upwards.
™ When increasing the front and rear momentum
amount of the looper, move the ball joints 9
downwards.
1. When the front and rear momentum of
the looper has been adjusted, move the
respective looper bases !1 , !2 and !3 ,
and readjust the front/rear positions
of the needles ( 4 , 5 and 6 ) and the
loopers ( 1 , 2 and 3 ).
2. When the above-mentioned adjust-
ments are carried out, the throat plate !4
should be removed.
3. When the front and rear momentum
amount of the looper is small :
The amount of contact becomes large
between tips of the needles ( 4 , 5 and
6 ) and rear parts of the loopers ( 1 ,
2 and 3 ) and this can be a cause of
needle tip being blunt.
4. When the front and rear momentum
amount of the looper is large :
The clearance becomes large between
tips of the needles ( 4 , 5 and 6 ) and
rear parts of the loopers ( 1 , 2 and
3 ) and this can be a cause of stitch
skipping.