Will The Power Of Ultrasonic Welding Machine Be Too Strong Lead To Product Deformation?
Jul 22, 2022
When our products are deformed by ultrasonic welding, it seems that it is the cause of ultrasonic welding on the surface, but this is only a result. What kind of result will be formed after the fusion of plastic products without any factors before the fusion.
If the main cause is not discussed, it will spend a lot of time dealing with the problem of inappropriate treatment. Moreover, in the ultrasonic indirect conduction welding operation, the pressure below 6kg cannot change the bremsstrahlung and inertia of plastic. So don't try to use strong pressure to change the deformation before welding, including the forced extrusion of the die.
Perhaps we will also fall into a blind spot, that is, to explore the cause of deformation from the surface, that is, it can't be seen by the naked eye before welding, but after completing ultrasonic welding, it is obvious to find the deformation. The reason is that before welding, it is difficult to find the cumulative errors of various angles, radians and residual materials of the product itself
due to the existence of the fuse line, but after the completion of ultrasonic welding, it appears to be visible deformation to the naked eye.
The causes of damage of product parts after ultrasonic welding are analyzed as follows:
1）. The power of ultrasonic welding machine is too strong;
2）. On the contrary, in some cases, it is necessary to strengthen the energy of ultrasonic wave, so that the high-energy ultrasonic wave can complete the welding in the shortest possible time, which is not enough to cause damage to the product structure;
3）. The energy output of ultrasonic horn is too strong;
4）. The stress point of the bottom formwork fixture is suspended and damaged by ultrasonic transmission vibration;
5）. Plastic products are high and thin to form a right angle at the bottom, but there is no r angle to buffer and dredge energy, resulting in stress concentration and damage;
6）. Incorrect ultrasonic processing conditions;
7）. The column or fragile part of plastic products shall be placed on the plastic mold parting line.
