COMPUTER-CONTROLLED HIGH SPEED LOCKSTITCH BAR TACKING MACHINE
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Ⅳ
.Troubles and corrective measures ( sewing conditions)
Trouble
Cause
Corrective measures
1.The needle
thread
slips off at
the start of
bar-tackin
g
Stitches are slipped at the
①
start
The needle thread
②
remaining on the needle
after thread trimming is
too short.
The bobbin thread is too
③
short.
④
Needle thread tension at
1
st
stitch is too high.
⑤
Pitch at 1
st
stitch is too
small.
○
Adjust the clearance between the needle and the
shuttle to 0.05 to 0.1mm.
○
Set soft-start sewing at the start of bar tacking.
○
Correct the thread tension release timing of the
thread tension controller No.2.
○
Increase the tension of the thread take-up spring,
or decrease the tension of the thread tension
controller No.1.
○
Decrease the tension of the bobbin thread.
○
Increase the clearance between the needle hole
guide and the counter knife.
○
Decrease the tension at 1
st
stitch.
○
Decrease the number of rotation at 1
st
stitch at the
sewing start.
○
Make the pitch at 1
st
stitch longer.
○
Decrease the needle thread tension at 1
st
stitch
2.Thread often
breaks or
synthetic
fiber
thread
splits
finely.
The shuttle or the driver
①
has scratches.
The needle hole guide has
②
scratches.
The needle strikes the
③
work clamp foot.
Fibrous dust is in the
④
groove of the shuttle race.
The needle thread tension
⑤
is too high.
The synthetic fiber thr
⑥
ead
take-up spring is too
high.
The synthetic fiber thread
⑦
melts due to heat
generated on the needle.
○
Take it out and remove the scratches using a fine
whetstone or buff.
○
Buff or replace it.
○
Correct the position of the work clamp foot.
○
Take out the shuttle and remove the fibrous dust
from the shuttle race.
○
Reduce the needle thread tension.
○
Reduce the tension.
○
Use silicone oil .
3.The needle
often
breaks.
The needle is bent.
①
The needle hits the work
②
clamp foot.
The needle is too thin for
③
the material.
the driver excessively
④
bends the needle.
○
Replace the bent needle.
○
Correct the position of the work clamp foot.
○
Replace it with a thicker needle according to the
material.
○
Correctly position the needle according to the
material.
○
Widen the distance between the needle and the
.
Summary of Contents for ZJ1900DSS
Page 6: ...高速电子套结机 2 各部件名称 1 主机的名称 缝纫机机头 送布压脚 线架 操作面板 电源开关 脚踏开关 2 2 1 2 5 3 2 6 2 4 2 7 机架 ...
Page 9: ...高速电子套结机 5 7 电线的连接 脚踏板 操作面板 8 眼睛防护罩的安装 为防止断针飞起弄伤眼睛 请一定安装起来 将附件箱中眼睛防护罩装在机头 如图所示左侧 ...
Page 25: ...高速电子套结机 21 图１ ...
Page 67: ...高速电子套结机 Ⅵ 台板图纸 63 Ⅱ ...
Page 96: ...COMPUTER CONTROLLED HIGH SPEED LOCKSTITCH BAR TACKING MACHINE 25 图１ ...
Page 97: ...6 ...
Page 146: ...COMPUTER CONTROLLED HIGH SPEED LOCKSTITCH BAR TACKING MACHINE 75 Ⅵ DRAWING OF THE TABLE Ⅱ ...
