Magnetic ground wire

Abstract

The invention discloses a magnetic ground wire, and relates to the technical field of welding. The magnetic ground wire comprises a fixed rack, and a ground wire mechanism and a magnetic suction mechanism which are separately arranged on the fixed rack, wherein the ground wire mechanism is of an L-shaped flakelike structure; a mounting piece rotatably connected with the fixed rack is arranged at one end of the ground wire mechanism; a contact piece in contact with a welding body is arranged at the other end of the ground wire mechanism; the contact piece extends outwards and is provided with aconnecting piece connected with a ground wire cable; the magnetic suction mechanism comprises a hollow shell and a magnet mounted in the shell; a mounting shaft is arranged in the shell in an interpenetrating manner; one end of the mounting shaft is fixedly connected to the fixed rack; the other end of the mounting shaft is fixedly connected to the magnet; the lower end face of the magnet and thelower end face of the contact piece are coplanar; and the shell can slide between the fixed rack and the magnet along the mounting shaft. According to the magnetic ground wire, the ground wire mechanism can reset through selfweight and is always in tight contact with the welding body, and the contact size is large; and clearing of iron powder is facilitated through the magnetic suction mechanism,adsorption force is high, and adsorption is firm.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a magnetic ground wire. Background technique [0002] Metal welding is an indispensable process in the industrial field. The electric welding machine needs to connect the ground wire to form a circuit when welding. There are various types of ground wires, including clamp type, stud type, magnetic suction type, hanging piece type, etc., each with its own advantages and disadvantages. In the automotive sheet metal repair industry, the magnetic ground wire of the magnetic suction type has the advantages of easy operation, no need to polish the welding head and can be fixed at any point. However, there are also the following disadvantages, which make it difficult to popularize and use them in the market. [0003] 1. The contact point of the traditional magnetic ground wire is small, because the ground wire is set inside the magnet and needs to be equipped with a spring to fasten t...

AI Technical Summary

Problems solved by technology

However, there are also the following disadvantages, which make it difficult to promote and use in the market

[0003] 1. The contact point of the traditional magnetic ground wire is small, because the ground wire is set inside the magnet and needs to be equipped with a spring to fasten the contact, so the magnetic adsorption force will be weakened under the action of the spring force; once the ground wire is in poor contact High heat generation will lead to degaussing of the magnet; after the magnet absorbs iron powder, the gap between the magnet and the workpiece will become larger, and the magnet will easily lead to poor contact and ignition after the magnet is charged, which will affect safety

[0004] 2. The surface of the traditional magnetic ground wire magnet is easy to absorb iron powder, and the iron powder is not easy to remove, resulting in a decrease in adsorption capacity

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