1. Ultrasonic welding is carried out on welding equipment. By adjusting the parameters such as pressure and amplitude, the welding head is ensured to contact the welding surface and apply pressure. The welding head generates high-frequency ultrasonic waves, and the upper workpiece vibrates and heats up, while the lower workpiece is a pressure-bearing part, which is fixed in the bottom die. Then the welding head stops vibrating and keeps the pressure, so that the melted part is cooled and formed, and the purpose of perfect welding is achieved.
2. The working principle of ultrasonic riveting is similar to welding. The method is that a plastic rivet penetrates into another material, the welding surface of the welding head is designed to be covered with the rivet, and the plastic rivet is welded and formed to cover the other material through high-frequency vibration and heating.
3. The working principle of ultrasonic spot welding is similar to welding. The welding head is designed as a pistol, and one end of a plastic workpiece penetrates and fuses to the plane of another plastic workpiece. The advantage is that the welding surface does not need any special design, tenon and rivet, and it is mostly used for large planar workpieces.
4. The working principle of ultrasonic embedding is similar to welding. The way is to put the embedded metal nail into the plastic workpiece, and then the welding head vibrates and heats up after contacting the metal nail, so that the nail is embedded and fixed in the plastic workpiece.