Ultrasonic welding device applied to vapor chamber and tailless sealing technology thereof

Abstract

The invention discloses an ultrasonic welding device applied to a vapor chamber and a tailless sealing technology thereof. The device comprises a base body, a welding platform, an executing mechanismand an ultrasonic assembly, an embedding rectangular portion is formed on the top of the front end of the base body, and the middle of the base body is provided with an installing groove which is linked to the embedding rectangular portion; the welding platform is embedded in the rectangular portion; the ultrasonic assembly is horizontally embedded in the executing mechanism, and the ultrasonic assembly is composed of an ultrasonic transducer, a horn which is linked to the middle of the front side of the ultrasonic transducer, a moving rectangular body which is arranged on the outer wall of the horn and is integrally connected with the horn and a tool head which is linked to the middle of the front end of the horn. The device has the advantages that the fusing effect at the welding interface of the vapor chamber which is sealed through ultrasonic welding is good compared to argon welding and laser welding, the bonding force is high, the internal stress is uniform, the welding effect isgood, the yield rate is high, the efficiency is high, and the energy consumption is low.

Description

technical field [0001] The invention belongs to the technical field of machinery, and in particular relates to an ultrasonic welding device applied to a uniform temperature plate and a tailless sealing process thereof. Background technique [0002] The vapor chamber is a component with high heat dissipation performance. It is often used as a medium for direct contact with heat dissipation and is widely used in lamps and electronics. The vapor chamber is mainly composed of a metal substrate, a metal cover plate and a capillary metal mesh structure. Its manufacturing process Among them, the capillary metal mesh structure is laid on the metal substrate, the metal cover plate and the metal substrate are superimposed, the periphery is welded and sealed, and then pure water is poured through the copper tube, and then vacuumized, so that the A sealed working chamber is formed between the metal base plate and the metal cover plate. [0003] In order to facilitate vacuuming and pour...

AI Technical Summary

Problems solved by technology

The yield rate of argon welding is low, usually only 50% to 60%. This is because the heat-affected zone of argon welding is large, and the welding temperature is too high to easily lead to cracking of the vapor chamber, which often causes deformation, hardness reduction, Insufficient binding force and internal stress damage, etc., resulting in more defective products; the utilization rate of laser welding is low in the tailless sealing process, and the metal cover plate and metal substrate are mostly sheets formed of copper or alloy materials. Solid materials have a low absorption rate of laser light. If plasma appears during laser irradiation, its absorption rate will be lower, resulting in a low conversion rate of the laser machine, usually only 5% to 30%. The utilization rate is low and the energy consumption is large. make the production cost high

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