The working principle of ultrasonic welding machine and how to control the temperature

The working principle of ultrasonic plastic welding machine has been introduced to you, but there are still people who do not understand, today here again to introduce to you.

The principle of

After ultrasonic come into contact with the plastic parts, can produce high frequency vibration on the contact surface (can reach tens of thousands of times per second), the high frequency vibration transmission energy, the energy transmission to welding area, and the weld zone has a characteristic impedance is large, when energy conduction here would have a high temperature in local, it can be plastic melt, and then a certain amount of pressure on the plastic parts, Make the two plastic parts together, when the ultrasonic stop acting, after a period of time solidification molding, you can complete the fusion of two plastic parts.

The temperature

How to control the temperature of ultrasonic welding machine during welding? First of all, the hardness of a material has a great effect on temperature, and the harder the material is, the better its ability to conduct vibration will be. And when the plastic parts are in the molten state, they will be soft, so that the conduction ability will be weakened, the friction between molecules will be weak, and the energy of ultrasonic wave will stop in a very short market price. Therefore, when welding, the temperature of ultrasonic welding machine needs to be slightly higher than the melting point temperature of welding plastic parts.