How to solve the problem of thread binding and thread clamping with shoe sewing machine？
In the early days of industrial development, we used to make shoes by hand, such as putting soles and uppers on. In the 1980s, we were wearing shoes sewn by our mother needle by needle, and the style was relatively single. Now we can choose different styles of shoes in the market, thanks to the shoe-making sewing machine.
However, if the sole is too thick and the needle can not penetrate through, it is easy to break the needle or around the bottom line. In case of this fault, we have to carry out disassembly and repair. Under normal circumstances, if you know where the fault is, remove the faulty part of the sewing machine for repair. But because we are not professional maintenance personnel, so in the installation, there are big and small problems. For example, it can't be installed or the needle can't be installed. As we all know, "the nature of things is mainly determined by the principal aspect of the contradiction which has gained a dominant position.". In the process of using the sewing machine. In case of needle breakage, jumper or sudden non rotation, we should first observe carefully, make correct judgment after analysis, and grasp the main contradiction so as to solve the problem with a definite aim.
Thread clamping:
When the sewing machine is putting the shoes on the soles, sometimes there will be the problem of thread sticking or thread clamping. The reason may be that the shuttle is stuck by dirt or the spring of the machine head is too loose, which leads to thread clamping. So how can we solve the problem of thread sticking? Take a screwdriver and put it into the shuttle center to wrap a few circles of thread, then put it on the hand wheel and rub it to make it full. Pay attention to temporarily pull down the thread on the needle to avoid being handed into the shuttle bed. If there is dirt, we can push open the needle board, take out the shuttle cover, shuttle bed and shuttle core, wipe them with cotton cloth, then brush the dirt in the cloth feeding teeth with thick duck feather, and then drip oil before running; If it is the head clamp, the spring is too tight or too loose（ Adjust the tightness to make it pull out smoothly and naturally; The screws on the shuttle sleeve are too tight or too loose（ The method is very simple; For the problem of thread sticking, there are two prevention methods. One is to keep the thickness of the bottom line consistent. The second is to thread in accordance with the specified order, not wrong threading.
As long as the maintenance master of sewing machine practices carefully and patiently, he can quickly get familiar with the principle, performance and structure of sewing machine. So as to master and improve the ability to judge various faults and maintenance technology. All parts of the sewing machine are disassembled. The name and assembly center line are indicated. According to the center line in the figure, local disassembly can be carried out. When repairing and assembling, the parts in the atlas can be compared with the repaired sewing machine, which is helpful to speed up the understanding of its structure.
