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Adjustment Procedures
3. Adjustment of concentricity between welting patch scale and needle
center
(1) After the fixing screw
deflect in the direction of the arrow to secure the concentricity of the
needle center. After concentricity adjustments, tighten the fixing
screw
assuredly.
(Caution) This adjustment is also needed when the parallelism is
adjusted between the welting patch scale
clamp feet.
4. Adjustment of binder levelness
Similarly as for adjustments of fall position and concentricity, adjust
and confirm the horizontality (also horizontality of the welting patch
scale
and the sewing table
(1) Similarly as for the adjustment of the fall position, manually lower
the binder
.
(2) Assume the conditions such that the distance becomes 1mm between
the lower face of the welting patch scale
the sewing table
secured.
(However, the difference between front and rear ends of the welting
patch scale
shall be 0.3mm or less.)
(3) For horizontality adjustment, loosen the fixing screw
mounting base and deflect the entire binding
the arrow, around the center of the binder pivot shaft
secure the horizontality.
After the adjustment of horizontality, tighten the fixing screw
securely.
(4) For the adjustment of clearance (1mm) between the lower face of
the welting patch scale
try to turn the cylinder sahft
Loosen the lock nut
of tightening the shaft onto the cylinder joint to let the welting patch
scale
rise or in the direction of loosening the shaft to let the scale
fall.
When a clearance of 1mm has been secured, tighten the lock nut
assuredly.
5. Adjustment of materials guide
The material guide
the edge of the needle during sewing.
When the stitch size is changed, readjustments are always needed.
(1) Loosen the fixing screw
the arm to the side of the needle.
The clearance between the side face of the needle shank section
and that of the material guide
(2) At that time, the material guide spring
the material guide arm
unreasonable resistance at the time of material passing.
The pressing pressure of the material guide spring
by the screw
.
(3) The clearance between the material guide
scale
shall be kept around 0.5 to 1.0mm (welt cloth thickness).
It can be adjusted by means of the screw
nut
.
After adjustments, tighten the lock nut
has been loosened, let the entire binder
).
at the bottom end, and that horizontality can be
and the upper face of the sewing table
as illustrated.
and turn the cylinder shaft
allows a welting patch to become stable at
of the material guide arm
shall be 0.1 to 0.6mm.
shall be effective such that
is lightly pressed and there is no
securely.
and the
and the upper face of
of the binder
in the direction of
, in order to
,
in the direction
and move
can be adjusted
and the welting patch
after loosening the lock
– 34 –
Results of Improper Adjustment
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