HIGHLEAD DY-850, Instruction Manual

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17. 调整送布牙倾角
ADJUSTMENT OF FEED DOG INCLINATION
送布牙的标准位置应为水平。如果需要，可以根据缝料按照以下方法调整送布牙倾角
1) 旋松螺钉 A。
2) 用螺钉起子左右旋转牙架曲柄偏心轴。
3) 调整结束，旋紧螺钉。
If necessary, adjust the inclination according to
the material to be sewn as follows:
1) Loosen the screw “A”.
2) Rotate the eccentric shaft clockwise or
counterclockwise with screw driver.
3) Tighten the screw “A”.
18. 送布牙与机针同步调节
TIME FEED MOTION TO NEEDLE MOTION
机针 A 尖端到达针板面 B 时，送布牙 C 尖端与针板
面 B 高低一致，此为标准同步关系。
The standard timing of feed motion to needle motion is
that the top of feed Dog ( C ) is flush with Throat Plate
Surface ( B ) when the point of Needle ( A ) reaches Throat
Plate Surface ( B ).
不同步时的调节方法：先打开机壳后盖板、侧板，旋松送布凸轮螺钉 A、D，按住送布凸轮 B，再缓
缓转动主动轮，当上轴油孔 C 的上端与送布凸轮的基准孔 G 的下端一致时，即达到同步关系。调节时，
送布凸轮 B 与牙叉滑块 H 的间隙应为 0.3-0.5mm。最后，旋紧螺钉 A、D 即可。
If feed motion is not timed to needle motion, adjust as follows:
Remove Arm back cover and side cover. Loosen Set Screws (A) and (D) of feed and feed lifting eccentric. Hold
Feed and Feed Lifting Eccentric (B) and turn Balance Wheel slowly until the upper edge of Arm Shaft Oil Hole