How To Avoid Overflow Ultrasonic Wire Structure Design ?

Ultrasonic wire structure design to avoid overflow

The solution is not easy to weld plastic material - shear surface design

The molecular structure of semi-crystalline plastics is spring-like in the solid state, which absorbs part of the high-frequency mechanical vibration energy inside, making it difficult for ultrasonic energy to be transmitted to the welding surface. Therefore, welding of such plastics usually requires high amplitude. The result of this narrow melting point range is that high power ultrasonic waves (high heat of fusion) must be used to break the crystalline structure and allow the material to flow. Once the melted material flows out of the heated area, a slight drop in temperature will quickly cure. Because of this characteristic, in order to achieve a satisfactory welding effect, it is necessary to adopt a special energy guide point interface design.

The advantages of shear guide point design

◆ High welding strength

◆ Good water air tightness effect

Avoid false welding phenomenon

◆ Suitable for most plastic materials

Limitations on the design of shear guide points

◆ Processing materials requiring high precision

◆ Strong support is required

◆ Welding surface is regular polygon or round

Structural design of ultrasonic welding to avoid joint surface overflow

The design of plastic joint mechanism of ultrasonic plastic welding affects the strength of welding, the beauty of welding, the accuracy of welding and water tightness. Therefore, it is necessary to decide the design type of the joint surface appropriately according to the material of the plastic, and the chimeric shape is very important in the characteristics of conduction welding. The following is a variety of surface design examples to avoid the external and internal overflow of the processed material. With the adjustment of welding time, amplitude and pressure of ultrasonic welding, the best effect of rapid, beautiful and strong welding can be achieved.