Welding jig for robot to weld automobile door lower hinge reinforcing plate assemblies

Abstract

The invention relates to a welding jig for a robot to weld automobile door lower hinge reinforcing plate assemblies. The welding jig is used for coaxially positioning automobile door lower hinge reinforcing plates and accessories to be welded of the automobile door lower hinge reinforcing plate assemblies, so that the accessories to be welded are welded on the automobile door lower hinge reinforcing plates. The welding jig comprises a jig bottom plate, coaxial positioning mechanisms, rotation preventing mechanisms for the accessories to be welded, rotation preventing mechanisms for the automobile door lower hinge reinforcing plates and rapid press pliers. The coaxial positioning mechanisms, the rotation preventing mechanisms for the accessories to be welded, the rotation preventing mechanisms for the automobile door lower hinge reinforcing plates and the rapid press pliers are arranged on the jig bottom plate. Compared with the prior art, the welding jig has the advantages of being easy to operate, convenient to overhaul, dismount and mount, good in error detection, good in welding quality stability, high in production efficiency and the like.

Description

technical field [0001] The invention belongs to the technical field of automobile manufacturing and processing, and relates to a welding jig, in particular to a welding jig used for welding a reinforcement plate assembly of a lower hinge of an automobile door by a robot. Background technique [0002] The door hinge reinforcement plate connects the outer panel of the rear door of the car and other parts together, and plays a role in strengthening the curing of the stamped parts. If the strength of the reinforcing plate is not enough or the shape hole does not fit the outer door panel, it will affect the appearance of the whole vehicle and the smooth lifting of the door glass. [0003] At present, the welding of many automobile door lower hinge reinforcement plate assemblies has problems such as welding quality defects and dimensional instability due to unstable positioning. When the door lower hinge reinforcement plate assembly is assembled, the door lower hinge will be stren...

AI Technical Summary

Problems solved by technology

If the strength of the reinforcement plate is not enough or the shape hole does not fit the outer door panel, it will affect the appearance of the whole vehicle and the smooth lifting of the door glass

[0003] At present, the welding of many automobile door lower hinge reinforcement plate assemblies has problems such as welding quality defects and dimensional instability due to unstable positioning. When the door lower hinge reinforcement plate assembly is assembled, the door lower hinge will be strengthened. The plate assembly cannot be assembled smoothly on the door

The main technical problems of existing welding fixtures are: low welding efficiency, low positioning accuracy, poor error proofing and other defects. Therefore, corresponding special welding positioning fixtures must be equipped during the welding process, which can further improve welding efficiency and ensure its welding stability

Therefore, if the fixture is used for welding the door lower hinge reinforcement plate and the parts to be welded, the improvement of the positioning accuracy of the parts to be welded is limited.

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