24
Needle timing advanced
Needle !!ming retarded
＠
二＿
＿
＿
Standard
机针同步提前
标 准
25
机针同步滞后
Small
Big
小
大
(｀\
[26．调节机针与送布机构同步（图24)
26.Adjusting the timing of needle and
feed mechanism (Fig. 24)
标准位置：
当送布牙从最高位置下降， 机针孔中心
O
应与针板
上表面0、 送布牙顶端O在同
一
水平面上。
调整可以通过调节送布凸轮和抬牙凸轮的安装位置进行。
1卸下后盖板。
2．用左手逆时针转运上轮， 以上轴齿轮第二只固定
螺钉
0
为基准， 抬牙凸轮的第三只固定蟀钉
0
中
心， 将对齐0中心， 柏微向下偏
一
点。
3继续逆时针转动上轮， 以抬牙凸轮
O
第二只紧固
甥钉O为基准， 送布凸轮的第三只紧固蝗钉0中
心， 将对齐0中心， 稍微向上偏
一
点。
4若要调整为非标准位置， 则先松开抬牙凸轮上三
颗螺钉，再根据＠或
g
所示方向少许转动偏心凸轮
O
。
为增加线的张力， 则向＠方向转动。
为避免机针折弯， 则向
g
方向转动。
5调整结束后， 拧紧所有婬钉。
The standard timing is when the feed dog is
lowered from its highest position until it is flush
with the top of the needle plate ®, and the
needle eye@ is also aligned horizontally with
the surface.
Adjust by changing the phases of feed cam and
eccentric wheel UD
1.Remove the rear cover
2.Turn the machine pulley in reverse direction,
set the second screw@ on the gear of upper
shaft as reference mark, make the third screw
® of eccentric wheel UD slightly lower than the
reference mark screw@;
3.Continue to turn the machine pulley, set the
second screw® of eccentric wheel UD as
reference mark, make the third screw (i) of feed
cam slightly higher than the reference mark
screw@.
4.lf need a non-timing position, loosen the three
screws of eccentric wheel UD, adjust the
eccentric cam@ in the direction of arrow (A) or
(B)
To increase the tension of thread, turn the
eccentric cam @to direction (A)
To avoid the needle bent, turn the eccentric cam
@ to direction (B)
5.After adjustment, tighten all of the screws.
[27调节旋梭油量（图25)
27. Adjusting the rotary hook
lubrication amount {Fig. 25)
放倒机头， 转动油量调节螺钉0来调节油虽大
小。
Tilt back the machine head, and turn the oil
adjustment screw
CD
to ad」ust the hook oiling
amount.
-12-
