| 摘要 |
FIELD: personal use articles.SUBSTANCE: in the sewing machine with multi-thread chain stitch and device of prevention of ripping stitch the base of the needle plate (11) is divided into the left (11L) and the right (11R) parts of the needle plate, and the left part is used to connect the needle plate and to support the swivel drive (30) of the thread hanging hook (3), and the right part of the base of the needle plate is attached to the sewing machine bed (B) and is used for fixing the retaining element (4), the stopper cylinder (42) and the thread control cylinder (32). In addition, the left part of the base of the needle plate has an ability of removal-mounting on the upper part of the sewing machine bed (B) using the screw fastener elements (102), which enables to provide sufficient space for setting the stitch, maintenance and replacement of various parts and components located inside the sewing machine bed, to perform easily these procedures, without additional time and labour expenditures, while providing consistently stable quality of stitching, and implementation of the function of prevention of ripping stitch of chain stitch.EFFECT: increase in efficiency of operation.14 cl, 23 dwg |
