The main function:

Principle of ultrasonic plastic welding

When the ultrasonic wave acts on the thermoplastic plastic contact surface, it will generate high-frequency vibration of tens of thousands of times per second. This high-frequency vibration reaches a certain amplitude, and the ultrasonic energy is transmitted to the welding area through the upper weldment. Since the welding area is two The acoustic resistance at the welded interface is large, so localized high temperature will be generated. In addition, due to the poor thermal conductivity of the plastic, it cannot be distributed in time and gathers in the welding area, causing the contact surface of the two plastics to melt rapidly. When the ultrasonic wave stops working, let the pressure continue for a few seconds to make it solidify and form, thus forming a strong molecular chain to achieve the purpose of welding, and the welding strength can be close to the strength of the raw materials. The quality of ultrasonic plastic welding depends on three factors: the amplitude of the transducer welding head, the applied pressure and the welding time. The welding time and the welding head pressure can be adjusted, and the amplitude is determined by the transducer and the horn. The interaction of these three quantities has an appropriate value. When the energy exceeds the appropriate value, the melting amount of the plastic will be large, and the welding object will be easily deformed; if the energy is small, it will not be easy to weld firmly, and the applied pressure should not be too large. This optimum pressure is the product of the edge length of the welded part and the optimum pressure per 1mm of the edge

Ultrasonic plastic welding machine application market

1. Automobile: (transportation industry) Ultrasonic can be controlled by computer program to implement welding of large and irregular workpieces such as: bumpers, front and rear doors, lamps, brake lights, etc. With the development of high-grade roads, more and more reflectors are using ultrasonic welding.

2. Appliances: With proper adjustment, it can be used for: portable fluorescent lampshades, steam ironing doors, TV casings, recorders, transparent panels of audio machines, power rectifiers, TV casing screw fixings, mosquito-reducing lamp casings, washing machine dehydration tanks, etc. Sealed, strong and beautiful home appliances.

3. Packaging: The sealing of the hose and the connection of the special packing tape.

Fourth, the toy industry: Because of the use of ultrasonic technology to make the products clean, efficient and firm, the use of screws, adhesives, glues or other auxiliary materials is eliminated, which reduces production costs and greatly enhances the competitiveness of enterprises in the market.

5. Electronics: The use of automation scheme design enables users to achieve large-scale production, while ensuring product quality requirements.

6. Other commercial purposes: Ultrasonic equipment can be used in communication equipment, computer industry, printing equipment, audio and video products, etc.