Gun-pressed elastic ground wire

Abstract

The invention discloses a gun-pressed elastic ground wire, which comprises a welding unit and a grounding unit, wherein the welding unit comprises a conductive transfer part and a welding part; the conductive transfer part is connected with a welding gun and can be pressed; the welding part is connected with sheet metal in a welding manner; a concave cavity and an opening groove are formed in thetransfer part; the welding part is arranged in the grounding unit in a penetrating manner; an elastic element is arranged between the welding part and the grounding unit; the grounding unit comprisesan insulating component and a ground wire base; the insulating component movably sleeves the outside of the welding part; and the ground wire base is in contact with the sheet metal. By adopting the transfer part with the concave cavity and the opening groove, the gun-pressed elastic ground wire can be matched with various welding drawing tools, and is convenient to operate; the distance between awelding head and the ground wire base is short, so that the resistance during welding is effectively reduced and the welding success rate is improved; the contact area of the ground wire base and thesheet metal of a car body is large, so that output impedance is effectively reduced and the conductivity is improved; and the condition that the ground wire base has sufficient contact pressure on the car body is ensured through the elastic element to ensure that a welding point is not easily loosened.

Description

technical field [0001] The invention relates to the field of sheet metal welding, in particular to a gun-pressed elastic grounding wire. Background technique [0002] The grounding wires used by traditional electric welding machines for automobile sheet metal repair generally include clip type, stud type, magnetic suction type and hanging piece type, among which the stud type grounding wire is the mainstream grounding wire for electric welding machines for automobile sheet metal repairing today. Design, the traditional stud-type grounding wire is mainly composed of an iron stud and a large brass hand-tightened nut. The iron stud uses a small brass nut to lock and fix the wire terminal up and down. The iron stud The front end is tapered, which is helpful for resistance welding. After the welding is completed, the user needs to twist the brass thumb nut to lower the nut position until it is in face-to-face contact with the body and locked to shorten the exposed length of the i...

AI Technical Summary

Problems solved by technology

However, in order to ensure that the ground wire does not fall off, sufficient output current is required to ensure the welding strength. When using a welding torch, a welding tip with a large contact area and good conductivity must be replaced. Hammer and other welding and drawing tools are used for welding. The welding head of the sliding hammer is made of iron and the contact point is small, so that the output current is greatly attenuated, and the ground wire is not easy to weld firmly.

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