Ultrasonic welding when indentation need how to solve

In the actual operation of ultrasonic welding machine, it is common to produce scars on the surface of the product, fracture or crack at the joint. This is because when ultrasonic vibration is used for plastic products, the surface of the product is prone to scald. For thinner plastic columns or holes, it is also prone to rupture, which is inevitable for ultrasonic machine work. Another aspect is the use of Ultrasonic spot welder to repair some difficult welding effects. So, ultrasonic welding appears indentation how to do? At this time, power output (number of segments), welding time, dynamic pressure and other matching factors must be considered to overcome this lack of operation. The following solutions are summarized:



1, reduce pressure, reduce delay time, reduce welding time.

2, reference media coverage (such as PE bag).

3, die fixture surface treatment (hardening or chrome plating). For products that are easily cracked or broken, the fixture should be made of cushioning, such as soft resin or covered cork, etc. (this shall not affect the welding strength).



These are the problems that ultrasonic welding machine needs to solve. Now there are many equipment that use ultrasonic work, such as ultrasonic spot welding machine, rotary welding machine, etc., which are good products in welding machine. For ultrasonic welding machine, although there are certain advantages, but also need our attention is how to solve the surface of the product scars, how to avoid, in order to achieve the optimal welding effect.