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How to correct the stitches of sewing equipment

How to correct the stitches of sewing equipment

HomeSewing equipmentThe stitch is a double-thread interlocking needle. The correct stitch is that the two intersections of the upper thread and the bottom thread are closely connected and are in the middle of the sewing material. The stitches are not tight or loose, neat and beautiful. However, in the sewing process of the sewing machine sewing equipment, a variety of bad stitches may appear. At this time, we need to adjust slowly according to the stitch formation principle and experience.

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At present, the bad stitches of the sewing equipment of the sewing machine include: floating thread, floating bottom thread, loosening, sewing material shrinkage, etc. It is necessary to understand the cause and master the elimination method to correctly call the correct stitch.

For the problem of floating upper thread in sewing equipment, the reason is: the upper thread tension is too large, or the bottom thread tension is too small. The bottom thread is pulled to the top of the joint material by the upper thread, and the intersection of the two lines floats on the joint material. The upper thread is straight, and there is an obvious lifting phenomenon, which is called the floating surface. Therefore, the solution is: adjust the upper thread tension adjustment dial of the sewing equipment to a smaller value, loosen the lower thread tension or increase the bottom thread.

For the problem of floating bottom thread, the main reason is that when the upper thread tension of the sewing machine is low or the bottom thread tension is too high, the upper thread is pulled under the sewing material, and the intersection of the two threads is exposed under the sewing material, and the bottom thread is formed A straight line with obvious uplift is called a floating bottom line. Solution: Increase the upper thread tension or lower the lower thread tension.

The reason for the loosening of the thread marks of sewing equipment is that the tension between the surface and the bottom thread is relatively small, and the intersection of the two threads is between the joint materials, but the intersection of the surface and the bottom thread is not tight. Relax and float on the upper and lower sides of the sewing material. If you apply more force, there will be a gap between the two layers of sewing material. Solution: appropriately increase the tension of the upper thread and the bottom thread of the sewing equipment.

In addition to the above-mentioned problems, poor stitches of sewing equipment include shrinkage of the sewing material. The main reasons are: the tension between the upper thread and the bottom thread is too high, and the intersection of the two threads is between the sewing material, which makes the sewing material, especially thin Material, produce shrinkage and unevenness. At this time, if you pull the sewing material with a little force, you will break the sewing thread. At present, the solution to the problem of sewing material shrinkage in sewing equipment is to reduce the tension of the upper thread and the bottom thread.

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