The ultrasonic welding machine converts the current 50 / 60Hz electric frequency into 20kHz or 40KHz electric energy through a transistor functional equipment, and supplies high-frequency electric energy to the converter. The converter converts electric energy into mechanical vibration energy for ultrasonic, and the voltage regulating device is responsible for transmitting the transformed mechanical energy to the welding head of the ultrasonic welding machine.
The welding head is an acoustic device that directly transmits the mechanical vibration energy to the products to be pressed. The vibration is transmitted to the bonding surface through the welding work piece. The vibration friction generates heat energy to melt the plastic. The vibration will stop when the molten material reaches its interface. Holding the pressure briefly can produce a strong molecular bond when the melt solidifies on the bonding surface. The whole cycle is usually completed in less than one second, But its welding strength is close to that of a connected material.
Ultrasonic welding machine
1. Welding: refers to the process of welding two thermoplastic products in a broad sense. When the ultrasonic vibration stops, the solid material melts and the welding is completed. Its joint strength is close to a whole piece of continuous material. As long as the joint surface of the product is designed to match, there is absolutely no problem with complete sealing.
2. Dishing: the process of melting the mechanical lock to form a plastic bolt of different materials.
3. Embedding: insert a metal part into the reserved hole of plastic products. It has the advantages of high strength, short forming cycle and fast installation, which is similar to the insert in die design. The process of melting a mechanical lock to form a plastic bolt of different materials.
4. Bending / generation: the sound wave melts part of the fitting and then forms a plastic protrusion or plastic pipe or other extruded fittings. The advantages of this method are fast processing, small internal pressure, good appearance and overcoming the nature of materials.
5. Point fierce: it is the local welding of two thermoplastic components without reservation or energy control. Spot welding can also produce a strong bonding structure, especially suitable for some large accessories, protruding plastic sheets or cast thermoplastics, and products with complex structure and difficult to enter the joint surface.
6. Shear: ultrasonic process of cutting and sealing some ordered and disordered thermoplastic materials. The edge sealed by this method shall not crack, and there shall be no burr and crimping. Sealing of textiles / films sealing of textiles and some films can also be used for ultrasound. It can press the film tightly, and can also cut and seal the textiles neatly. Stitching also plays a decorative role.