NEEDLE THREAD GUIDE DEVICE OF MULTI-THREAD CHAIN STITCHING MACHINE

摘要

PROBLEM TO BE SOLVED: To reliably form a predetermined stitch without any skipped stitches by providing a simple structure of a needle thread receiver to prevent the mistaken advancement of a looper to a plurality of needle thread loops. SOLUTION: A cam surface 8c to provide the tension immediately before the looper 10 is advanced to a needle thread loop 6Lr to a left needle thread 6L on the side on which the advancement of the looper 10 is delayed out of the needle threads 6R and 6L received and supported by a thread receiving surface 8a of the needle thread receiver 8 as the upward oscillation of a movable needle thread path 3 interlocking with the upward motion from a bottom dead center of a right needle 1R and a left needle 1L is integratedly formed at the position close to the thread receiving surface 8a of the needle thread receiver 8.