SPANGLE SEWING METHOD IN DOUBLE CHAIN STITCH SEWING MACHINE

摘要

PROBLEM TO BE SOLVED: To automatically supply sequins continuously or at equal intervals or irregular intervals to zigzag stitches of double chain stitches and to sew them on a cloth.;SOLUTION: In a double chain stitch sewing machine provided with a sewing machine main shaft 6, a needle bar vertical movement mechanism 33, a needle swing mechanism A and a looper swing mechanism B, a spangle send-out device 40 for sending out the spangles 36 to a needle location position one by one by the drive of a stepping motor 39 is attached, a rotation detector 41 for making an ON signal flow at the optional angle of one rotation 360° of a sewing machine is attached to the end part of a sewing machine pulley 22, and a proximity sensor 42 is installed on the left end side of a looper shaft 28. The looper shaft 28 reaches the most left end position when a needle 18 attached to the lower end of a needle bar 4 reaches the bottom dead point of the first needle location, the left dead point of the looper shaft 28 is detected by the proximity sensor 42 at the time, the left dead point is defined as an origin, and the stepping motor 39 is driven and the spangles 36 are sent out simultaneously with some numbered ON operation of the rotation detector 41 from the origin.;COPYRIGHT: (C)2007,JPO&INPIT