1 Manufacturer of automatic welding machine case and head parts of lighter

In recent years, the important technological means of ultrasonic welding has rapidly attracted the attention of chemical production enterprises. Many chemical manufacturing enterprises are investing costs and resources to introduce large-scale ultrasonic processing and welding special equipment. For various types of plastic products or other products, if the production and processing enterprises choose the ultrasonic method for processing and welding treatment, it means that a large proportion of the welding treatment cost can be saved, and at the same time, it can ensure that the high strength of finished welding products and weld quality standards can be achieved. In this process, technicians must control and adjust the welding head pressure in real time, in order to effectively avoid the hidden dangers of welding product safety and quality caused by out of control of welding head pressure, and maximize the product welding quality control effect by combining the ultrasonic welding process parameters, the operation status of welding process equipment and welding treatment process factors, Fully ensure that the finished products obtained by welding meet the product performance standards of sealing and integrity.
Basic technical principle of ultrasonic welding
Ultrasonic welding is to convert the current of a specific frequency into electric energy through the ultrasonic generator. In this process, the converted high-frequency electric energy is converted into mechanical motion of the same frequency again through the transducer, and then the mechanical motion is transmitted to the welding head through a set of horn devices that can change the amplitude. The welding head transmits the received vibration energy to the joint of the workpiece to be welded. In this area, the vibration energy is converted into heat energy by friction, so as to melt the plastic and achieve the goal of product processing and welding.
At present, ultrasonic can be used not only to weld hard thermoplastics, but also to process fabrics and films. The main components of ultrasonic welding system include ultrasonic generator, combined equipment of transducer (horn or welding head), mold and frame equipment. The basic operation process of ultrasonic welding is: linear vibration friction welding uses the friction heat energy generated on the contact surface of two workpieces to be welded to melt the plastic. The heat energy comes from a certain pressure. A workpiece moves back and forth with a certain displacement or amplitude on the other surface. Once the expected welding degree is reached, the vibration will stop. At the same time, a certain pressure will still be applied to the two workpieces to cool and solidify the just welded part, so as to form a close combination.
Influencing factors of ultrasonic welding pressure strength
If the chemical production materials formed by ultrasonic welding want to achieve the effect of complete melting, the key premise is to reasonably control the pressure strength of the ultrasonic welding system and fully ensure the firm connection of the melted welding production materials. However, in the whole process of ultrasonic welding, there may be high or low pressure strength of the welding system. Specifically, for the low welding pressure strength, the most significant consequence caused by the low welding strength is that the welded parts do not reach the degree of close combination, and the welding materials in the molten state cannot be firmly adhered. The above adverse welding treatment consequences can be called false welding phenomenon. In contrast, for the automatic control system of ultrasonic welding, if the welding pressure strength is adjusted to be too large, the risk of flash or deformation of the welding part will become higher. Therefore, it can be judged that the pressure strength of the welding head in the operation of the welding system will directly affect the forming effect and quality of welded products.
The fluctuation of welding head pressure will have an impact on the whole process of ultrasonic welding. Specifically, when selecting and setting ultrasonic material welding treatment parameters, technicians must strictly control the factors of welding head pressure, ensure that the measures and practices of welding head pressure adjustment are used to promote the close integration of product welding parts, and effectively save the time and cost of welding joint treatment. In the future, based on the technical improvement and transformation in this field, technicians should adjust the welding head strength and pressure factors in the links of ultrasonic processing and welding in real time, combined with the information-based ultrasonic welding control technical means to ensure the safety of welding products and effectively make up for the defects of welding products.