Banner
Home > Hua Hin Information > Content

What to do if the flat head buttonhole computerized sewing machine goes offline

What to do if the flat head buttonhole computerized sewing machine goes offline

Normally, flat keyholeComputerized sewing machineAt the beginning of sewing, the suture will often come out of the needle hole, causing the buttonhole to fail and affecting the sewing effect and quality. The main reason is that the bottom and the upper thread were not twisted correctly on the fabric before the upper thread was cut. And this kind of failure of the flat-head buttonhole computerized stitching machine is generally not caused by a problem with a certain part. Therefore, we need to check and adjust from the following aspects.

缝纫机.png

One is to check the loose wire. When the flat-head buttonhole computerized sewing machine is stopped, check whether the thread-releasing wire can loosen the upper thread by 5~7mm. Because its function is to release the upper thread after the buttonhole is completed, and when the computerized sewing machine performs the next buttonhole, it cooperates with the thread take-up lever to provide enough upper thread for the rotary hook to prevent the upper thread from being reduced by the supply of upper thread. Get out of the scissors.

The second is to check the clamping force of the flat head buttonhole computerized sewing machine. When the upper thread scissors cut the upper thread and clamp the end of the thread, you can pull the lower thread by hand. If it is easy to pull the upper thread from the upper thread scissors, the clamping force of the upper thread scissors is loose. Adjustment method: Remove the splint on the lower thread scissors, bend it slightly, and reinstall it so that the upper thread scissors clamp the end of the thread. At the same time, check whether the limit is maintained at 0.5mm when the upper thread scissors are completely closed. In addition, the improper closing of the upper thread scissors of the flat-head buttonhole computerized sewing machine is also one of the reasons why the thread cannot be clamped.

The third is to check whether the needle is bent, whether the upper thread is threaded wrongly, and whether the upper thread is of poor quality. Because if the flat-head buttonhole computerized sewing machine has skipped stitches before opening the upper thread scissors, the upper thread will come out of the needle hole when the scissors are opened. Therefore, it is necessary to correctly adjust the matching time of the needle and the rotary hook and the upper cutting thread time, so that the flat buttonhole computer stitching machine starts to sew from the 5th to the 7th stitch slowly.

In addition to the above points, check whether the bottom thread length of the flat-head buttonhole computerized stitching machine is sufficient. If the length of the bottom thread is not enough, the bottom thread and the top bottom thread cannot be twisted correctly at the beginning of sewing, causing the top bottom thread to come out of the needle hole. The standard length of the bottom thread is 36mm away from the bottom thread pressing core spring. If the length is not enough, adjust the angle of the bottom thread pulling plate to increase the amount of thread. In short, in actual work, it is necessary to analyze and judge the flat-head buttonhole computerized sewing machine before adjustment.

电脑针车缝纫机.png