The working principle of vibration friction welding machine

The vibration friction welding machine utilizes 'high-frequency mechanical vibration + pressure' to achieve the welding of thermoplastic materials. After the equipment is started, the vibration system (composed of a motor, eccentric wheel, etc.) drives the welding head to produce high-frequency (usually 100 - 300Hz) and small amplitude (0.5 - 3mm) horizontal vibrations; the workpieces to be welded are precisely positioned by the fixture, one side fixed, and the other side vibrates with the welding head, rubbing against the surface of the fixed workpiece at high speed, converting mechanical energy into thermal energy, rapidly heating the contact area to a molten state; continuous application of welding pressure maintains the workpieces in close contact, and when the molten layer reaches a certain thickness and temperature uniformity, the vibration stops, entering the hold-pressure cooling phase, where the molten material solidifies to form a molecularly bonded, robust joint, completing the welding.

Application Industries

(1) Automobile Manufacturing

• Application Scenarios: Interior parts (instrument panel body, door panel storage box), exterior parts (headlight shell, bumper), power system periphery (intake manifold, oil pan), new energy battery packs (shell sealing, cell support).

• Value: Efficient welding of engineering plastics such as PP, PA, ABS, ensuring lightweighting and structural sealing of automobiles, adapting to the large-scale, high-reliability production demands of the automotive industry.

(2) Consumer Electronics

• Application Scenarios: Mobile phone/computer casings (metal-plastic composite structure welding), charger/headphone components (interface sealing, casing assembly), smart wearable devices (watch case, bracelet body).

• Value: High-precision welding control ensures the integrity of electronic products' appearance and waterproof performance, meeting the miniaturization and precision manufacturing requirements of consumer electronics.

(3) Medical Equipment

• Application Scenarios: Syringes/infusion sets (Luer connector, sealing piston), hemodialyzers (membrane component packaging, shell welding), medical plastic containers (reagent bottles, culture dishes).

• Value: The welding process is dust-free and pollution-free, meeting medical grade cleanliness standards; high-strength, airtight joints ensure the safety of medical equipment use.

(4) Packaging Industry

• Application Scenarios: Large plastic packaging containers (chemical drums, food cans), logistics turnover boxes (seam welding, lock reinforcement), anti-counterfeiting packaging (one-time sealing structure).

• Value: Rapid welding achieves high-strength sealing of packaging containers, adapting to the safety and durability requirements of chemical and food industries for packaging.

(5) Aerospace

• Application Scenarios: Aircraft interior parts (seat frames, cabin ventilation ducts), lightweight structural parts (plastic-composite material connections), aviation electronic equipment casings (sealing protection).

• Value: Precise control of welding stress prevents material deformation, contributing to the lightweighting and reliability improvement of aerospace equipment.