12. 下結線鈎縫線張力
下結線鈎揚線凸輪設定說明,觀測方向如圖
12. Adjusting looper thread tension
Looper thread take-up guide setting
explaination and the observation direction
is as diagram A
12-1 標準設定位置
先將導線板與座板的右側對齊
12-1 Position of looper thread take-up
guide:
Align the looper thread take-up guide
with the right side of the eyelet supporting
plate.
12-2 揚線時序
針棒由上死點下降 2.8mm 時,揚線凸輪上的縫線
正好通過 A 點。
時序提前可增加揚線量,時序延後可減少揚線量。
※注意:
(1) 在調整揚線凸輪的時序時,不可造成
軸向的移動,以免與其它零件干涉。
(2) 揚線時序調整過度時會造成跳針。
12-2 Timing of looper thread take-up:
Position the looper thread take-up as
Its standard position that looper thread
passes thru the point A when the needle
bar is 2.8 mm lower from its highest point.
Loosen the screws to adjust it.
To increase the looper thread take-up amount,
fasten the timing.
To decrease the looper thread take-up amount,
delay the timing.