How To Do Well in Ultrasonic Welding Head?

Ultrasonic plastic welding machine mold first, material selection. Most daily molds 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. The price is reasonable. It is the preferred material for ultrasonic plastic welding machine molds. In particular, titanium alloy has good performance, but the price is relatively expensive. Secondly, steel is used for those with high strength and wear resistance requirements.

Second, structure. Generally, the mold of the ultrasonic plastic welding machine is generally divided into two upper and lower molds. The upper mold is connected 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 consistent with the frequency of the ultrasonic generator, otherwise it will damage the mold. The lower mold is mainly used to fix the plastic workpiece, which can be designed and manufactured by yourself.

Third, frequency. The frequency of the mold is calculated by the ultrasonic manufacturer through professional software analysis according to the material, size and shape of the workpiece. The frequency of each mold must be matched with the equipment through factory inspection. 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.