Cause analysis and solution of stitch failure of overlock sewing machine

2022/11/03

Cause analysis and treatment method of stitch failure of overlock sewing machine. Overlock sewing machine is also called overlocking machine, overlocking machine, edging machine, and bone machine. It is generally divided into three lines, four lines and five lines. The main function is generally to prevent the seam of the garment from fluffing. The overlock sewing machine can not only be used for hemming, but also can be used for sewing T-shirts, sportswear, underwear, knitting and other fabrics.

Overlock machine cutting and sewing can be carried out at the same time, the stitches are like mesh, and it is also suitable for elastic fabrics.

The overlock sewing machine sometimes has a problem that the loop seam does not flow smoothly. The cause of this failure is analyzed as the wrong installation of the pressure tool, which needs to be re-installed correctly. Sometimes the improper timing of the crochet thread cam movement will cause the same failure, and the wheel orientation needs to be adjusted appropriately.

Circumferential crochet hooks installed incorrectly need to be re-installed correctly, and wrong threading will cause the same error, which can be re-threaded correctly. If the control line strength is too large or too weak, it will also cause this kind of failure, which can be solved by adjusting the appropriate control line strength. The wrong relationship between the needle and the crochet is also a factor that causes this kind of failure. We can adjust the relationship between the needle and the crochet.

Sometimes the needle plate or the tongue has burrs, we need to use emery cloth.

Loose stitching is caused by wrong threading, too thick thread, or the control loop is not pressed against the thread, or the needle and crochet hook are wrongly installed. We need to re-install the thread correctly, replace the appropriate suture, adjust the control loop to properly crimp the thread, or re-install the needle and crochet needle correctly to adjust.



Uneven stitching can be caused by incorrect threading, incorrect installation of the thread stand, incorrect installation of the lower knife, damaged needle tip, inappropriate height of the feeder, and even too strong or weak pressure on the pressing tool. For these faults, it is possible to re-thread the thread correctly, re-install the thread frame to make the thread, or re-install the lower knife, replace the new needle, and adjust the height of the feeding tool or the pressure strength of the pressing tool to deal with the failure.

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