COMPUTER-CONTROLLED HIGH SPEED LOCKSTITCH BAR TACKING MACHINE
- 72 -
Needle thread is stepped
⑤
on by the work clamp
foot at the start of sewing
(Needle bend)
wiper.(23 to 25mm)
4.
Threads are
not
trimmed.
The counter knife is dull.
①
The difference in level
②
between the needle hole
guide and the counter
knife is not enough.
The moving knife has been
③
improperly positioned.
The last stitch is skipped.
④
Bobbin thread tension is
⑤
too low.
○
Replace the counter knife.
○
Increase the bend of the counter knife.
○
Correct the position of the moving knife.
○
Correct the timing between the needle and the
shuttle.
○
In crease the bobbin thread tension.
5.Stitch
skipping
often
occurs.
The motions of the needle
①
and shuttle are not
properly synchronized.
The clearance between the
②
needle and shuttle is too
large.
③
The needle is bent.
The driver excessively
④
bends the needle.
○
Correct the positions of the needle and shuttle.
○
Correct the positions of the needle and shuttle.
○
Replace the bent needle.
○
Correctly position the driver.
6.The needle
thread
comes out
on the
wrong side
of the
material
the needle thread tension is
①
not high enough.
The tension release
②
mechanism fails to work
properly.
The needle thread after
③
thread trimming is too
long.
Number of stitches is too
④
few.
When sewing length is
⑤
short(End of needle
thread protrudes on the
wrong side of sewing
product.)
Number of stitches is too
⑥
few.
○
Increase the needle thread tension.
○
Check whether or not the tension disc No.2 is
released during bar-tracking.
○
Increase the tension of the thread tension
controller No.1.
○
Correct the position of the moving knife.
○
Use the lower plate, the hole of which is larger
than the presser.
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 ...
