| 摘要 |
FIELD: textile, paper. ^ SUBSTANCE: zigzag sewing machine comprises mechanisms of a needle 1, a thread takeup 2, a cloth mover 3, a shuttle 4, kinematically joined to the main shaft 5, a bearing block of guide plates 8, including the main guide plate 8.1 of the automatic program of the cloth mover motions, and a device for change of a stitch shape 10 with a cam 13 for smooth adjustment of the stitch length and a transition guide plate to change a puller from the latter to the guide plate of the automatic program of the cloth mover motions and vice versa. According to the invention, the transition guide plate is arranged in shape as an additional guide plate 14 of the automatic program of the cloth mover motions. At the same time the guide plate is arranged so that its average diametre is located at one level with the cam 13 for smooth adjustment of the stitch length, which provides for smooth changeover of the puller 9 and makes it possible to produce additional stitches. ^ EFFECT: expansion of technological possibilities of zigzag sewing machine with minimum costs for production preparation. ^ 2 cl, 10 dwg |
