Projection welding top electrode device

Abstract

The invention discloses a projection welding top electrode device. The projection welding top electrode device comprises an electrode contact, an electrode holding rod, an electrode cap, and an anti-reversal ring; one end of the electrode contact is in threaded connection with the electrode holding rod, while the other end of the electrode contact is in threaded connection with the electrode cap; a rubber sealing ring A is arranged between the electrode contact and the electrode holding rod, while a rubber sealing ring B is arranged between the electrode contact and the electrode cap; an insulation pad is nested into the anti-reversal ring, and the insulation pad and the anti-reversal ring both sleeve the electrode cap. According to the projection welding top electrode device, the connection of the electrode cap, the electrode contact and the electrode holding rod is changed into the threaded connection, and the rubber sealing rings are adopted to realize a water proofing effect, and therefore, the risks of falling, rubber twisting, and poor electrical conductivity are eliminated; the anti-reversal ring is assembled with the electrode cap so as to eliminate the risk of a fixture accident happening due to reversal of a nut; cooling water comes into direct contact with the electrode cap by means of the electrode contact, and the thickness of the electrode cap is reduced, and the cooling effect is improved; when different standard parts are welded later, only the electrode cap, the insulation pad, and the anti-reversal ring need to be replaced, and the time of replacement is shortened.

Description

Technical field [0001] The invention relates to the technical field of electrodes, in particular to a projection welding upper electrode device. Background technique [0002] The currently used projection welding upper electrode and the electrode holder are mainly the following structures: [0003] 1. The lower part of the electrode holder and the inside of the electrode holder are processed with the same taper and press fit. This matching method works well when the working electrodes are relatively new, but after a period of use, the electrode grip has been stressed continuously, resulting in an increasing size of the electrode grip at the matching place, resulting in a gap in the matching part. After collocation, water leakage and electrical conductivity become worse, which will affect the welding effect. And because the front end of the upper electrode is too thick, the cooling effect is poor. [0004] 2. When welding nuts, because the upper electrode cap does not have anti-rev...

AI Technical Summary

Problems solved by technology

This kind of matching method works well when the working electrodes are relatively new, but after a period of use, because the electrode handle is constantly under force, the size of the electrode handle at the matching place becomes larger and larger, and there is a gap in the matching part, resulting in After matching, water leakage and poor conductivity will affect the welding effect

And because the front end of the upper electrode without water is too thick, the cooling effect is poor

[0004] 2. When welding the nut, because the upper electrode cap has no anti-reverse measures, if the employee puts the nut backwards during production, it will cause the welding leg of the nut and the upper electrode cap to be welded dead, resulting in a tooling accident

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