Easily solve minor faults of zigzag sewing machine

A thick thread zigzag sewing machine is a special sewing machine, also known as a zigzag sewing machine. Two-point machines and three-point machines are commonly used, which greatly improves the activity rate of the equipment. the sewing machine is composed of a machine head, base, transmission, and accessories. The head is the main part of the zigzag machine. The utility model is composed of four mechanisms of pricking, thread hook, thread take-up, and feeding, as well as auxiliary mechanisms such as wire winding, material pressing, and tooth dropping. The movement of each mechanism is reasonably coordinated and works circularly to sew the sewing material.

The zigzag sewing machine will produce mechanical fatigue after long-term use. The coordination of various parts is not as good as before, and some small faults will occur. If the sewing material is wrinkled, it is due to the broken tip of the needle, the excessive tension of the bottom thread, and the improper adjustment of the differential mechanism. At this time, we should replace the needle, loosen the shuttle spring screw and readjust the differential mechanism. The reason why the lower part of the sewing material is "gnawed" to form grid tooth marks is that the tip of the cloth feeding tooth is too sharp and the pressure of the presser foot is too high. We can use an oilstone to polish the tip of the feeding teeth and loosen the pressure regulating screw of the presser foot. There is wired wool under the sewing material. There is a sound of breaking the fiber during sewing, which is due to the broken tip or too blunt of the machine needle. Resolutely replace the new needle. It is estimated that the stagnation of sewing material is due to too low feeding teeth and too high presser foot pressure. At this time, raise the cloth feeding teeth and tighten the pressure regulating screws.

The sewing material moves back and forth also because the feeding teeth are too high and need to be adjusted. The reason why the sewing object cannot be sewn backward is that the feed cam shifts and the position of the feed cam also need to be adjusted. The irregular skew of the sewing material is also due to the crooked installation of the cloth feeding teeth or the loose screws of the cloth feeding dog. Just correct the feed teeth and tighten the feed teeth screws.

Usually, you can observe and summarize more in your work, and you can solve the small faults of the zigzag sewing machine by yourself without asking anyone else.