The Principle And Process Of Ultrasonic Welding Machine?

The principle of ultrasonic plastic welding is that the generator generates 20KHz(or 15KHz) high pressure, high frequency signal, through the energy conversion system, the signal is converted into high frequency mechanical vibration, applied to the plastic product workpiece.

When the temperature reaches the melting point of the workpiece itself, the workpiece interface rapidly melts, and then fills the gap between the interfaces. When the vibration stops, the workpiece is cooled and shaped under a certain pressure at the same time, and then perfect welding is achieved.

Welding method

1, welding method

With ultrasound ultra high frequency vibration welding head under moderate pressure, make the two pieces of plastic joint surface produces friction heat and instantaneous melting joint, the welding strength can be comparable to ontology, adopt the appropriate artifacts and reasonable interface design, can achieve watertight and airtight, and adopts the AIDS the inconvenience of cancellation, efficient clean welding.

2, riveting method

The welding head with ultra-high frequency vibration of ultrasonic wave presses the protruding tip of plastic products, making it instantly heat and melt into rivet shape, making different materials riveted together mechanically.

3, preparetions

Through the welding head of propagation and appropriate pressure, the metal parts (such as nuts, screws, etc.) into the reserved plastic hole, fixed in a certain depth, after completion of the tension, torsion can be equal to the strength of traditional mold molding, can avoid the defect of injection mold damage and slow injection.

Ultrasonic welding machine is mainly used for the secondary connection of thermoplastics, compared with other traditional processes (such as adhesive, hot bonding or screw fastening, etc.), with high production efficiency, good welding quality, environmental protection and energy saving and other significant advantages.

Ultrasonic plastic welding equipment is widely used in medical equipment, packaging, auto parts, fishing gear and other industries, such as disposable infusion filter and plasma separation cup, ziplack bag, plastic wine bottle cap, dishwasher wheel, plastic toys, car lights, plastic fake bait, charger shell and mobile phone sling welding.