Resistance welding cantilever electrode tool and welding method for ultra-thin copper layer of large thin-walled structure

Abstract

The invention discloses a resistance welding cantilever electrode tool with a large thin-wall structure and ultra-thin copper layer, which comprises a support plate, an insulating support, a resistance spot welding machine, an upper cantilever, a lower cantilever, an upper electrode, a lower electrode and a lead screw; the support plate An insulating bracket and a resistance spot welding machine are installed on the top, and the lower cantilever is fixed on the support plate through three insulating brackets. One end of the upper cantilever is connected to the positive electrode of the resistance spot welding machine through a copper wire, and the other end is connected to the upper electrode through an adapter plate. One end of the lower cantilever is connected to the negative electrode of the resistance spot welding machine through a copper wire, and the other end is connected to the lower electrode through an adapter plate; the support plate is installed on the lead screw, and the movement of the lead screw can drive the support plate to move. The invention simultaneously discloses a resistance welding method of the resistance welding cantilever electrode tool. The electrode of the invention can go deep into the deep part for fixed-point welding, and the welding quality is high.

Description

technical field [0001] The invention relates to a resistance welding cantilever electrode tool and a welding method of a large thin-walled ultra-thin copper layer, and belongs to the field of welding technology. Background technique [0002] Precision resistance welding technology is an indispensable interconnection method for electromechanical products, and it is widely used in the fields of automobiles, ships, and aerospace. Ultra-thin copper layer and silver-plated braided copper strip materials have shown broad application prospects in space technology and national defense industry due to their good electrical transmission performance and good flexibility, especially in high-current fields such as battery circuits. Connecting materials for key electronic products of spacecraft, satellites, etc. However, traditional resistance welding cantilever electrodes cannot meet the needs of ultra-thin copper resistance welding of large thin-walled structures for the following reas...

AI Technical Summary

Problems solved by technology

[0003] On the one hand, the electrode cannot go deep into the deep part for fixed-point welding;

[0004] On the other hand, if the cantilever is too long, it will cause the cantilever to deform due to insufficient rigidity during the welding electrode compression process, which will cause the electrode end surface to be non-parallel. Defects such as cracking

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