[Maintenance Technology] How to debug a sewing machine for a maintenance novice?

Many novices in the maintenance or debugging sewing machine, just rely on disassembly or replacement parts to solve the problem, not only many problems have not been solved, but even more will appear the more repairs the more problems of the embarrassing situation. In fact, there are many nodes in the design and development process of each sewing machine, and each node has a strict standard, it is the strict control of these nodes to makes the sewing machine fast, accurate, and smooth sewing. The following three nodes reflect the positioning relationship of different machines, and when necessary, they can be used to analyze the causes of failure and find out the exact solution.

Take the needle bar height as a benchmark. Needle bar height positioning in the sewing equipment debugging is very important, is sewing equipment in the use and maintenance of an important parameter, much debugging work is to it as a benchmark, if it is positioned to appear big deviation, will affect the hook line, feed pick line and other institutions of the debugging work, thus interfering with the whole machine movement with the time positioning. To determine the reasonable height of the needle bar according to the different types of machines used to inscribe positioning, fixed positioning, size positioning, reasoning positioning, and other methods.

For sewing machines with curved needles, the alignment of the needle eyelet of the needle and the needle eyelet of the curved needle is an important reference relationship in the commissioning process of this type of sewing equipment. If this relationship can be grasped well, in general, the commissioning of this type of sewing equipment can achieve the desired results. (Particular attention should be paid to the relationship between the needle and the curved needle in the process of rising and falling).

The so-called three points and one line refers to the correspondence between the needle eye, teeth, and needle plate of the flat sewing machine. Taking the upper plane of the needle plate as the reference, when the needle and teeth are adjusted normally when the needle eye descends from the highest point to the upper plane of the needle plate, the tops of the teeth are also leveled with the upper plane of the needle plate, and the thicker material machine uses the needle tip as the positioning point.

It can be seen that, in the process of debugging or maintenance, as long as you adhere to the working principle of the sewing equipment and technical standards as a guideline for operation, you can debug and repair the sewing equipment with stable sewing and perfect stitches.