Device and method for producing cold pressure welding compound rivet contacts

Abstract

The invention, which belongs to the field of technique for preparing rivet contacts, provides a device and a method for producing cold pressure welding compound rivet contacts. The device includes: a main unit base, a upper positioning clamper, a lower positioning clamper, a strip press head, a material-removing press head, a material knife and a forged piece base. The invention improves the precious metal thread entrance of the existing double-layer compound cold pressure welding rivet driver into a die-stamping structure, and changes the original wire material cutting and feeding mode into a compound strip punching and feeding mode, thereby manufacturing unidirectional multi-layer rivet contacts; preparation of bidirectional multi-layer compound cold pressure welding rivet contacts two identical devices is realized after two identical devices are combined, thereby resolving the difficult problem of production of low-cost single, bidirectional multi-layer compound cold pressure welding rivet contacts coated with gold.

Description

technical field [0001] The invention relates to a production device in the technical field of rivet contact preparation, in particular to a cold pressure welding composite rivet contact manufacturing device and a manufacturing method. Background technique [0002] Rivet contacts are important basic components in electromagnetic relays. According to different uses, rivet contacts are divided into three basic structural forms: integral rivet contacts, double-layer composite rivet contacts and three-layer composite rivet contacts. In the field of weak current applications such as communication, in order to make the contact resistance of the relay low and stable after the relay is closed, gold composite rivet contacts or silver rivet contacts are often gold-plated as a whole. It is too thin, and the non-working surface is also plated with gold. Both methods have the limitations of large amount of precious metal and high product cost. [0003] After searching, it was found that ...

AI Technical Summary

Problems solved by technology

If it is necessary to add a gold coating or other coatings that meet special performance requirements on the end face of the precious metal, methods such as electroplating, vacuum evaporation, and plasma sputtering deposition must be used. These methods have low coating bonding strength or high cost. Or it is not conducive to large-scale automated production and other shortcomings

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