Ultrasonic sewing

Ultrasonic sewing
Ultrasonic sewing is one of the alternative methods of traditional sewing methods, which is used to weld different textile surfaces quickly and cleanly. Ultrasonic technology is used in many fields of textile, and it is one of the effective methods for assembling clothing parts in the clothing industry. Many problems encountered in traditional sewing can be solved by ultrasonic sewing.
Ultrasound is defined as sound waves whose frequency is higher than about 20 kHz or cannot be heard by the human ear. Ultrasonic welding technology is based on the use of high-frequency vibration to connect materials in thermoplastic structures. Due to vibration, the temperature in the material will rise. With the rise of temperature, the material will melt and combine. Although ultrasonic sewing is an energy saving and environmental protection method, it does not need the thread and other materials used in traditional sewing methods. Ultrasonic welding method is used in different industry branches such as automobile, textile, clothing, medical treatment, packaging, electronics, etc.
Ultrasonic technology involves various processes in the textile industry. The vibration of the foundation of ultrasonic sewing machine will cause the material temperature to rise rapidly. This temperature rise causes the material to melt and bond. Ultrasonic sewing machine is similar to traditional sewing machine in structure, but it does not carry needle and thread parts. The working principle of the device is to convert electrical energy into high-frequency mechanical vibration. The high-frequency electric energy is transmitted to the ultrasonic converter, which converts the high-frequency electric vibration into the vertical mechanical vibration. This vertical movement occurs from the other end of the converter and is transferred to the horn, which is transferred to the tool head, which then transfers the mechanical energy to the parts to be bonded. Due to high-frequency mechanical vibration, the fabric between the tool head and the anvil releases heat through mutual friction. This friction heat causes the synthetic fibers in the material to melt and stick. When the fabric is far away from the vibration energy, the sudden heat loss will make the adhesion permanent, and the ultrasonic seam without abrasion and separation risk will be obtained.