The PVC welding machine is one of a wide variety of welding machines
. It is an industrial special welding machine for processing plastics. There are many kinds of welding machines underneath, and mainly representing plastic welding machine is ultrasonic plastic welding machine.
The main working principle of PVC welding machine
: When ultrasonic waves act on the thermoplastic plastic contact surface, it will produce tens of thousands of high frequency vibrations per second. This high frequency vibration reaching a certain amplitude transmits ultrasonic energy to the weld zone through the upper weldment. Since the weld zone, that is, the intersection of the two welds, has a large acoustic resistance, a local high temperature is generated. Moreover, because the plastic has poor thermal conductivity, it can not be dissipated in time and gather in the weld zone, so that the contact faces of the two plastics melt rapidly, and after a certain pressure, they are integrated into one. When the ultrasonic wave stops, the pressure continues for a few seconds, allowing it to solidify, thus forming a strong molecular chain for welding purposes, and the welding strength can be close to the strength of the raw material.
Ultrasonic plastic welding machine does not add any adhesive, filler or solvent, nor consumes a large amount of heat source when welding plastic products. It has the advantages of simple operation, fast welding speed, high welding strength and high production efficiency. Therefore, ultrasonic welding technology is becoming more and more widely used.