Curved needle operation method of sewing machine or computer controlled embroidery machine

Abstract

The invention relates to a curved needle loop operating method of a sewing machine or a computer embroidery machine. The method is characterized in that in a stitch process, when a crochet hook moves down to pass through a needle plate hole, the upper plane of a curved needle reaches an initial point and then returns the upper plane of the curved needle in an opposite way, the line passing hole of the curved needle operates 360 degrees in a positive direction from the initial point of the line passing hole of the curved needle to the reverse side of the crochet hook; after the loop operating is finished, the tracking operation of the crochet hook is finished in the remaining time of a stitch. The invention reduces the load of a servo-machine which drives the curved needle to operate when the servo motor reciprocates at high speed, reduces the noise, is beneficial to improving the motion precision of the curved needle, and improving the rotating speed and the service life.

Description

technical field [0001] The invention belongs to the operation mode of a looper of a sewing machine or a computerized embroidery machine during its looping process. [0002] Background technique [0003] In a sewing machine or computerized embroidery machine using a single-thread chain stitch; the manner in which a mechanically or motor-controlled looper operates during its looping. [0004] Sewing machine or computerized embroidery machine using single-thread chain stitch; both use crochet hook, looper loop, needle clamp to press material, and feeding mechanism to feed. Constitutes a single-line chain stitch. Its crochet and looper working relationship. See figure 1 and figure 2 . [0005] During a stitching process, when the crochet needle moves downward through the upper plane of the looper, and returns to the upper plane of the looper in reverse at the lower starting point, the thread hole of the looper rotates forward 360° from the starting point to the reverse si...

AI Technical Summary

Problems solved by technology

[0005]In the existing looper loop operation mode, the servo motor reciprocates at high speed, the operating load is high, the operating frequency is high and the noise is large, and the temperature of the motor rises. Therefore, the motion precision is low, errors often occur, and the long-term high-load operation also affects its service life, and it is even more difficult to increase the speed of looping

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