6. Relative position between looper
and
spreader
1) When
the
spreaders locate at
the
extremely
left
position, right side
of
spreader
must
meet
the
right
side
of
looper.
Adjust
as follows.
1) Temporarily tighten screw (A) for spreader holder.
2)
Turn
pulley
to
move
the
spreader
to
the
extremely
left
position.
Fastening
screw
(A) in Fig. 11
when
the
above relative
position
is satisfied.
Note:
For
spreader
adjustment,
adjust
A and B at
the
same
time.
The
clearance
between
loopers
and
spreaders
should
be
within
0.1mm
as
shown
in Fig.
12.
(Use
the
clearance
guage.)
Looper
retainer
adjustment
The
looper
retainer
should
be
adjusted
so
that
the
needle bar is
20mm
below
the
upper
end position (at
this
time,
the
needle is
at
the
center
behind
the
looper)
so
that
the
retainer
bar
can
move
upwards.
To
adjust,
do
as
follows.
1) Loosen
the
retainer eccentric screw H in Fig. 13, and
then,
tighten
this
crew
temporarily.
2) Rotate the pulley and adjust the looper retainer.
Turn
the
retainer
eccentric
I in Fig. 13
to
increase
looper
retainer
speed,
and
clockwise
to
decrease
speed.
3) For fine adjustment, loosen screw G in Fig. 13, and
then,
move the
retainer
thread
eyelet
up
and
down.
12.
Adjustment
of
feed gear rack
(A) Height of feed gear rack
The
proper
height
of
the
feed gear rack
from
the
needle plate
top
is
0.8
—
1.2mm
as
shown
in Fig.
14,
when
the
rack
is
at
the
uppermost
position.
Adjust
the
height
as follows.
1. Loosen the feed gear rack fixing screw (C in Fig.
14).
2.
Adjust
and
set
the
feed gear
rack
to
the
height
described
above,
and
tighten
the
fixing
screw
(C in Fig.
14).
(B) Parallel alignment of feed gear rack
Install
the
feed gear rack parallel
to
the
needle
plate.
Adjust
parallelism
as
follows.
1.
Loosen
the
Y-screw.
2.
Adjust
the
X-screw so
that
the
feed gear rack is
parallel
to
the
needle
plate.
3.
After
adjustment,
tighten
the
Y-screw.
0.1mm
Fig.
12
Fig. 11
Fig.
13
Needle
plate ^
0.8-
1.2 mm
Feed
gear
rack
installation
base
Feed
system
body
Fig.
14
I
From the library of: Diamond Needle Corp
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