Ultrasonic plastic welding machine mold, also known as ultrasonic welding head, ultrasonic fixture, is an important part of ultrasonic plastic welding machine. The design of ultrasonic plastic welding machine mold will directly determine the welding effect of the workpiece. Many of the design is not good and the workmanship is not fine. Welding heads often result in short service life of the welding head, easy to damage, unsightly welding of the workpiece, weak air tightness, and insufficient water tightness, etc. How can we make a good ultrasonic plastic welding machine mold?

Ultrasonic plastic welding machine mold first, selection of materials. Daily molds mostly use titanium alloy, aluminum alloy, and steel as raw materials. Now most of them use high-quality imported 7075 aluminum alloy, which has good mechanical strength, hardness and thermal conductivity, and is reasonable in price. It is the first choice for ultrasonic plastic welding machine molds. It is a titanium alloy with good performance, but the price is relatively expensive. Secondly, steel materials are used for high strength and wear resistance. Second, structure. Usually the ultrasonic plastic welding machine mold is generally divided into two upper and lower molds. The upper mold is linked to the transducer, and the lower mold is fixed on the base of the ultrasonic plastic welding machine. The upper mold is used to transmit ultrasonic energy, so the frequency must be the same as that of the ultrasonic generator. The frequency is the same, otherwise it will damage the mold. The lower mold is mainly used to fix the plastic workpiece, which can have the effect of fixing the workpiece. It can be designed and manufactured by yourself.

Third, frequency. The frequency of the mold is calculated by the ultrasonic manufacturer based on the material, size and shape of the workpiece through professional software analysis. The frequency of each mold must be tested and matched with the equipment before delivery. Generally, the mold frequency of ultrasonic plastic welding machine is divided into 15kHz, 20kHz, 28kHz, 30kHz, 35kHz, 40kHz, etc. The higher the frequency, the shorter the mold, and all molds are half-wavelength.The design of the welding head of the ultrasonic plastic welding machine mold will directly determine the welding effect of the workpiece. The quality of the product that you want to weld is high. Not only must the ultrasonic plastic welding machine be selected, the welding head and other parts can not be ignored, and it is more important to find a professional manufacturer.