| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a sewing machine including a feeding amount adjustment mechanism having high durability.SOLUTION: A sewing machine includes a feeding amount adjustment mechanism at a jaw part of an arm part. The feeding amount adjustment mechanism includes: a cover; and a movable member 71 capable of reciprocating in a forward/backward direction. Inside the cover, a plurality of photo-interrupters 61 to 63 aligned in a vertical direction are arranged. When the movable member 71 reciprocates in the forward/backward direction, on/off signals (S1 to S3) output by the plurality of photo-interrupters 61 to 63 are switched at different timing from each other. The sewing machine adjusts a feeding amount of a workpiece by the switching of the on/off signals.</p> |
