When using the ultrasonic welding process, many friends will encounter such a problem. During the use of the ultrasonic welding mold, wear occurs or the engraved shape of the welding head does not match the welding requirements of the product, and the mold needs to be shortened. Can the ultrasonic mold be used after it is shortened? The shortening of the mold not only wastes the mold, but may also damage the ultrasonic welding equipment. The following editor will lead everyone to learn welding knowledge together.

Ultrasonic molds can be shortened, but what we need to know is that the height of ultrasonic molds that can be ground is within 2mm. Each ultrasonic mold has a fixed frequency, the frequency of the ultrasonic mold becomes shorter and the frequency becomes higher. After the frequency exceeds the matching frequency, the equipment cannot work normally.

Knowledge supplement: 15khz ultrasonic mold length: 17-18cm; 20khz ultrasonic mold length: about 13cm; 28khz ultrasonic mold length: about 10cm; 30khz ultrasonic mold length: about 8cm.

The risk of shortening the ultrasonic mold: The welding principle of the ultrasonic welding machine is: the frequency of the ultrasonic generator-transducer-ultrasonic mold is similar, forming a vibration loop. If the ultrasonic mold is shortened by itself, the vibration between the transducer and the ultrasonic mold will be uncoordinated, and the energy will not be released when the energy is concentrated at the junction of the transducer and the mold, which will burn out the equipment.

Therefore, do not modify the short sonic mold or make your own mold to save costs. If the mold is worn or needs to change shape, you need to find a professional mold manufacturer to repair or remake it.