Frequency matching is also very important

Frequency matching is also very important. This is firstly because the ultrasonic transducer can only work at its resonance frequency, so the drive power supply, horn, and mold (tool head) should all work at this frequency. Generally speaking, this difference should not exceed ±0.1kHz at most, and it is better if it can be smaller. We strongly recommend that the frequency of the matching die (welding head) is lower than the vibrator frequency by about 0.1kHz (small signal frequency). In other words, if the frequency measured by the small signal of the original vibrator is 14.85 kHZ, it is most ideal to measure the frequency after connecting the mold to 14.75 kHZ. At the same time, it should be considered that after the ultrasonic transducer is connected to the horn and die head, the resonance frequency peak of the system becomes very sharp, that is, the bandwidth is very narrow, the mechanical quality factor is very large, and a little frequency deviation will cause the impedance to be very high. Big increase. Shown in the driving power supply is the power supply (amplitude meter electric power) is very large or overload protection. If the machine is unloaded at exactly this time, it is likely to cause chip misalignment, chip cracks or breakage of the center screw.

Power matching and impedance matching mainly take into account that the ultrasonic welding system is working in gaps, the load changes greatly, there must be sufficient power output during welding, and the minimum amplitude should be controlled when there is no load. Otherwise, as mentioned earlier, if the input is too large at no load, the transducer will be damaged. The power will not go up at full load and will have no effect.

Hangzhou Chenggong Ultrasonic Equipment Co., Ltd. was founded in 1995. It is a professional manufacturer engaged in ultrasonic application research, development and production of high-power ultrasonic transducers in China. The company's main products are transducers, ultrasonic drive power supplies, etc. These products are widely used in sonochemistry, plastic welding, metal welding, rubber cutting, non-woven fabric welding and other fields as the core key components of the power ultrasonic application industry.