[Automatic ultrasonic welding machine] power and frequency selection

The selection of automatic ultrasonic welding machine equipment is a very complicated problem, which requires consideration of many factors. Therefore, the purpose of this time is to provide general guidance information to help with equipment selection. The real choice of equipment should be in close contact with ultrasonic welding experts or equipment suppliers, listen to their opinions.

When choosing an automatic ultrasonic welding machine, one of the key factors to consider is the operating frequency. The operating frequency range of most equipment on the market is 20kHz ~ 40kHz, and the operating frequency of some equipment is 10~ 70kHz. Using lower amplitudes helps reduce the resonance of the welds, which mainly causes damage to the welds. Increasing the operating frequency or vibration amplitude will increase the power loss in the polymer. Therefore, in most cases, using a higher operating frequency is the only feasible way to obtain a lower amplitude and a higher power.

After determining the operating frequency, the power level should generally be considered. The frequency of each workpiece can typically have several power levels. For example, most equipment manufacturers offer automatic ultrasonic welding machines with a power range of 1 to 5 kW at a operating frequency of 20 kHz. In most cases, the required power can be determined by experiments with suppliers, research institutions, and university laboratories. If it is theoretically impossible to determine the required power in advance, it is best to select the maximum power to ensure that the equipment can meet the application requirements.

Similarly, when selecting equipment, it is necessary to determine whether the weldment is best suited for cut-in or continuous welding. For stitched welds, most equipment manufacturers have standard equipment for this, and a variety of other types of rotary anvil are available. Most anvils are cut, sealed, and welded. If the weldment requires very wide continuous welds (130px to 3050px or greater), special equipment must be designed.

Other equipment factors include control level, amplitude control, amplitude distribution, and procedural control capability of storage. For some applications, these options can improve solder quality and density. On the other hand, application lab testing can help determine which options are needed. It should also be noted that for most equipment manufacturers, additional options for welding equipment can also be added after purchase.