JUKI LK-1941 Manual De Instrucciones página 55

20130424 LK-1941,1942 R08
(2) Position of the counter knife
0.3 to 0.5 mm
5
9
1
Throat plate
3
2
A
4
8
6
4
7
5
Adsjusting procedure for H type and G type
1) Select dimension A, clearance provided between
needle hole guide 1 and counter knife 2 from the
table below in accordance with the type you desire,
loosen setscrews 3 and move counter knife 2to
djust the position. At this time, provide a clearance
of 0.3 to 0.5 mm between the throat plate and
counter knife 2.
Dimension A
2) Dimension B, difference in height between the
counter knife and needle hole guide 1 is as shown
in the table below. When this dimension is not
proper, bend the top end of the counter knife to
adjust the dimension.
Dimension B
Adjusting procedure for the hot wire type
1) Loosen setscrew 6 and move hot wire base 7 to adjust so
that a clearance of 0.5 mm is provided between needle hole
guide 4 and hot wire plate 5 both in the longitudinal and
lateral directions.
2) Check whether hot wire plate 5 and insulation
sheet 8 come in close contact with each other. If
not, loosen setscrews 9 and move hot wire plate
5 to adjust. (When setscrews 9 are loosened,
perform again the work of step 1).)
1. After adjusting the clearance, check
Throat
plate
2. Adjust the tightening torque of
3. Adjust the tightening torque of
H type
0.8 to 1 mm 1.4 to 1.6 mm
If dimension A is small, needle thread
or bobbin thread may be too short.
H type
0.25 to 0.35 mm 0.5 to 0.6 mm
If dimension B is large, needle thread
or bobbin thread may be too short.
with the tester or the like that there
is no electrical continuity in hot wire
plate 5, needle hole guide 4 and the
throat plate. If there is an electrical
continuity, temperature will not rise
and deterioration of sharpness or
cause of trouble wll result.
setscrew 6 to 98 to 147 N
15 kgf cm).
•
setscrews9 to 48 to 98 N
10 kgf cm).
•
G type
G type
cm (10 to
•
cm (5 to
•
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