Spot welding equipment for aluminum alloy workpiece

Abstract

The invention relates to the technical field of aluminum alloy welding, in particular to spot welding equipment for an aluminum alloy workpiece. The spot welding equipment comprises a rear seat body and a front seat body, a positioning groove is formed in the top wall of the end, close to the rear seat body, of the front seat body, a top plate is horizontally mounted at the top of the end, close to the front seat body, of the rear seat body, and two air cylinders are mounted on the top wall of the top plate; and output shafts of the two air cylinders extend to the lower side of the top plate and are provided with pressing plates, a mounting groove is formed in the bottom wall of the positioning groove, the interior of the mounting groove and the upper portion of the positioning groove are provided with two opposite elastic welding guns correspondingly, and the opposite ends of the two elastic welding guns are provided with connecting plates. A reciprocating driving mechanism drives a movable brush and a fixed brush to sequentially brush and wipe the aluminum alloy workpiece, the influence of an oxidation film on the welding quality is reduced to the maximum extent, the two elastic welding guns are arranged, a synchronous driving mechanism is used for controlling the two elastic welding guns to move in the opposite directions or the reverse directions, and the elastic welding guns can stably apply pressure to the workpiece, so that the welding quality is ensured.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy welding, in particular to spot welding equipment for aluminum alloy workpieces. Background technique [0002] Aluminum alloy welding refers to the welding process of aluminum alloy materials. Aluminum alloy has high strength and light weight. The main welding processes are manual TIG welding (non-MIG welding), automatic TIG welding and MIG welding (MIG welding). The aluminum alloy sheet is suitable for spot welding. [0003] Since aluminum is an active metal, aluminum will oxidize in the air to form a dense oxide film on its surface. Therefore, at this stage, aluminum alloy plates are generally cleaned with acid solution or alkaline solution before welding. The oxide film formed on its surface is removed. However, after cleaning, a thinner layer of oxide film will form again on the surface of the aluminum alloy, which will have a certain adverse effect on the welding quality during weldi...

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Problems solved by technology

However, after cleaning, a thinner layer of oxide film will form again on the surface of the aluminum alloy, which will have a certain adverse effect on the welding quality during welding. However, at this stage, there is a lack of treatment of the oxide film on the surface of the aluminum alloy during welding. measures, there are major disadvantages

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