The correct use of ultrasonic welding machine must solve the six problems:

In modern industry, we can see the figure of ultrasonic plastic welding machine everywhere. For example: product packaging, cutting, riveting, embossing, drilling and other industries need ultrasonic welding machine, so various, various functions of ultrasonic welding also emerged at the right moment, different application fields, the use of methods and requirements for equipment are not the same.

Thermal resistance to reach the melting point of the workpiece: ultrasonic transducer to convert electrical energy into machinery, through the workpiece material molecules for conduction, ultrasonic sound wave in solid conduction of acoustic resistance is far less than in the air, when the sound wave through the workpiece joint, the gap in the acoustic resistance, the heat generated is quite large. The temperature first reaches the melting point of the workpiece, plus a certain pressure, so that the joint is fused. And other parts of the workpiece due to small thermal resistance, low temperature will not weld.

Two kinds of workpiece must be fusible: some can weld better between different kinds of materials, some basic can phase fusion, some not phase fusion. The melting point of the same material is the same, so it can be welded in principle, but when the melting point of the workpiece to be welded is greater than 350℃, it is not suitable for ultrasonic welding. Because ultrasonic is instant to dissolve the workpiece molecules, the judgment is based on 3 seconds, not good welding, you should choose other welding process. Such as hot plate welding. Generally speaking, ABS material is the easiest to weld, nylon or PP material is the most difficult to weld.

The joint area has certain requirements: when the instantaneous energy is generated, the greater the joint area, the more serious the energy dispersion, the worse the welding effect, and even unable to weld. In addition, ultrasonic wave is longitudinal wave transmission, energy loss is proportional to the distance, long-distance welding should be controlled within 6 cm. The welding line should be controlled between 30---- and 80 wires, and the arm thickness of the workpiece should not be less than 2 mm, otherwise it cannot be well fused, especially for airtight products.

Ultrasonic welding machine output power to be constant: Ultrasonic plastic welding power output, the size of the same diameter and thickness of piezoelectric ceramic piece, material qualitative, design process, an ultrasonic transducer to finalize the design, the maximum power to finalize the design, also measure the size of the output energy is a complex, not the ultrasonic transducer, the greater the circuit using ultrasonic power tube, the more the greater the energy output, It requires a fairly sophisticated amplitude measuring instrument to measure its amplitude accurately

Out of the error of ultrasonic welding machine: how much output power, oscillation frequency, amplitude range, according to the material of the workpiece, welding line area, whether there are electronic components in the workpiece, whether to airtight and other factors to consider. Mistakenly believe that more power is better. This is also a misconception. If you don't know much about ultrasound. It is best to consult regular ultrasonic production plant engineering and technical personnel. If conditions are best to communicate to the factory site, do not blindly follow the misleading of some informal ultrasonic equipment sales staff.

The structure of ultrasonic welding head needs strict inspection: regular ultrasonic mold manufacturers have a strict inspection program for the feed, and the processing size is processed by computer software simulation and verification. Quality is guaranteed. These processes are generally unable to do the workshop, such as not through reasonable design, to make the mold, in the welding of small workpiece, reaction problems are not obvious, when the high power will appear all kinds of abuses. In serious cases, power components are directly damaged.

In short, the correct use of ultrasonic welding machine needs six aspects of comprehensive cooperation: thermal resistance to reach the melting point of the workpiece, two kinds of workpiece must be fusing, joint area has certain requirements, welding machine output power to measure, out of ultrasonic welding machine error, welding mold structure needs to be strictly tested.