| 摘要 |
A feed structure of a motor direct connection type sewing machine is provided to improve the amount of feeding fabric in backward sewing structure. A feed driving shaft is rotated by using a driving pulley(94) which is connected through the upper axis(20) and power transmission method. A feed cam is installed by connection with the driving pulley on the feed driving shaft. A lifting shaft cam is installed on the feed cam by contacting with the feed cam. A horizontal transfer connecting rod is connected to the feed cam, and a horizontal oscillation crank. A vertical direction transfer connecting rod(120) is connected to the lifting shaft cam, and the vertical direction oscillation crank of the vertical direction transfer shaft. |
