Today, Dongguan ultrasonic plastic welding machine manufacturers continue to explain some common fault problems of ultrasonic plastic welding machines, we will put them together, so that everyone can know, in the future operation, be careful not to make such mistakes.
1. When many people use ultrasonic plastic welding machines, they will choose some plastic parts that have used softness or toughness. However, in fact, this kind of filler can absorb ultrasonic waves, which leads to poor welding effect and the quality of the final product. Not good, in general, the more soft fillers, the greater the adverse effect on soldering.
2. The combination of work using different plastic parts is also wrong. This can cause welding difficulties or even welding when welding. When selecting the weldment, pay attention to the principle that the shrinkage and melting temperature of the material are similar.
3. The plastic parts that have used the release agent are also not suitable for ultrasonic plastic welding, because the principle of the ultrasonic plastic welding machine is to generate heat by friction, and the release agent will hinder the friction heat generation.
4, the choice of working environment, ultrasonic welding machine is not suitable to work in a humid environment, because moisture attached to the surface of plastic parts will affect the welding of plastic parts, and some plastics are very sensitive to moisture. In addition, the oil is also like this.
Summary of common problems with ultrasonic plastic welding machines:
1. The design of the contact surface of the ultrasonic plastic welding machine is easily overlooked. When the welding requirement is a sealing bonding surface or a high-strength bonding surface, the requirements for the interface design are very high. If the energy guiding line is not suitable, the sol outflow, the contact surface deviation or the rubber component cracking may occur. And so on.
2, the use of non-thermoplastic fillers for ultrasonic plastic welding machines should pay attention to the control of the amount. If used too much, it may cause difficulties in the welding of plastic parts. Generally speaking, when the amount of filler is more than 30%, It is not suitable for welding.
3. When the ultrasonic plastic welding machine is in the injection mold, be careful not to mold multiple sets of workpieces or multiple sets of molds at one time, because the workpiece volume may cause unstable welding results, such as inconsistent welding strength and flower marks on the workpiece.
4. The welding mold of the ultrasonic plastic welding machine is not fixed or the welding mold encounters the lower mold or other work materials during the welding process. Generally, the upper and lower welding molds are misaligned or the mold connecting screws are broken.
2018-01-27
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