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Ⅸ . 故障的現象與原因 • 處理對策
現 象
Troubles
1. 上線斷線
1. Needle thread breakage
2. 上線脫線
2. Needle thread slips off.
3. 平行部縫跡不均勻
3. Wobbling at parallel section.
4. 始縫縫跡不均勻
4. Wobbling at the start of
sewing.
5. 加固縫部上線從布的
下面露出，成團狀
5. Needle thread appears on
the wrong side of material
at bar-tacking section in
dumpling condition.
原 因
Causes
1. 平行部線張力過強。
2. 挑線彈簧的強度過強，移動量過大。
3. 旋梭尖部分有毛刺，有傷痕。
4. 旋鎖的同步時間不對。
5. 線道上有傷痕。
6. 機針安裝不良。
7. 機針過細。
8. 機針的前端有傷痕。
1. Thread tension at parallel section is too high.
2. Pressure or stroke of thread take-up spring is too
large.
3. There is a burr or scratch on the blade point of
hook.
4. Hook timing is not proper.
5. There is a scratch on the thread path.
6. Attaching needle is wrong.
7. Needle is too thin.
8. Needle tip is damaged.
1. 上線切刀張開過早。
2. 始縫部線勾不到一起。
( 始縫的張力過強。)
3. 上線穿線方法不對。
4. 始縫的速度過快。
1. Needle thread trimmer opens too early.
2. Whip stitching is not formed at the start of sewing.
(Tension at the start of sewing is too high.)
3. Threading needle thread is wrong.
4. Speed at the start of sewing is too fast.
1. 平行部線張力過弱。
2. 底線張力過強。
3. 張力過弱。
1. Thread tension at parallel section is too low.
2. Bobbin thread tension is too high.
3. Pre-tension is too low.
1. 平行部線張力過弱。
2. 上線切刀位置過高。
3. 挑線彈簧的移動量過大。
1. Thread tension at parallel section is too low.
2. Position of needle thread trimmer is too high.
3. Stroke of thread take-up spring is too large.
1. 加固縫線張力過弱。
2. 底線張力過強。
3. 因呈放射形狀，所以針數多。
4. 結束縫的張力過弱。
1. Bar-tacking thread tension is too low.
2. Bobbin thread tension is too high.
3. Number of stitches of radial shape is too many.
4. Tension at the end of sewing is too low.
Ⅸ .MALFUNCTION & REASDNS
AND CORRECTIVE MEASURES
處理對策
Corrective measures
• 平行部線張力過弱。
• 減弱挑線彈簧的彈力，或縮小移動量。
• 銼平旋梭尖的毛刺，過更換旋梭。
• 用同步規尺調整旋梭的同步時間。
• 用布或銼刀銼平傷痕和毛刺。
• 調整機針的朝向和高度。
• 更換成粗針。
• 更換機針。
• Decrease the thread tension at parallel
section.
• Decrease the tension of thread take-up
spring or decrease its stroke.
• Buff the blade point of hook. Or, replace
the hook.
• Adjust again the hook timing with timing
gauge.
• Polish the thread path with sand paper
and buff it.
• Adjust again the direction, height, etc.
• Replace the needle with a thicker one.
• Replace the needle.
• 上線切線時，夾子打開時間晚。
• 減弱始縫張力。
• 重新正確地穿線。
• 設定軟起動。
• Delay the opening timing of the needle
thread trimmer.
• Decrease tension at the start of sewing.
• Thread properly again.
• Set the soft-start function.
• 加強平行部線張力。
• 減弱底線張力。（直線鎖縫 0.05 ～ 0.1N）
• 增強張力
• Increase the thread tension at parallel
section.
• Decresase bobbin thread tension.(Purl
stitching : 0.05 to 0.1N )
• Increase pre-tension.
• 加強平行部張力。
• 只要不碰到壓腳儘量下降切刀。
• 減小挑線彈簧的移動量。
• Increase the thread tension at parallel
section.
• Lower the needle thread trimmer to
such an extent that it does not come in
contact with the presser.
• Decrease the stroke of thread take-up
spring.
• 加強加固縫線張力。
• 減弱底線張力。(0.05 ～ 0.1N)
• 減少針數。
• 加強結束縫張力。
• Increase the bar-tacking thread tension.
• Decresase the bobbin thread tension.
(0.05 to 0.1N )
• Decrease the number of stitches.
• Increase tension at the end of sewing.
Introduction
頁
Page
P .25
P .71
–
P .66
–
P .13
–
–
P .25
P .71
–
P .66
–
P .13
–
–
P .68
P .42
P .13
P .62
P .68
P .42
P .13
P .62
P .25
P .14
-
P .25
P .14
-
P .25
P .68
P .71
P .25
P .68
P .71
P .25
P .14
P .40
P .62
P .25
P .14
P .40
P .62
P81
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