Special welding machine for iron core ejector rod

Abstract

The invention provides a special welding machine for an iron core ejector rod. The welding machine comprises a frame, a welding head, an ejector rod clamping and ejecting mechanism, a base fixing mechanism, a guiding and positioning mechanism and an electrode driving cylinder, wherein a worktable is arranged on the frame; the ejector rod clamping and ejecting mechanism and the base fixing mechanism above the ejector rod clamping and ejecting mechanism are arranged on the worktable; the guiding and positioning mechanism comprises a sliding rail fixed on the frame and a movable plate slidingly connected with the sliding rail; the welding head is formed by electrode rods and fixed on the movable plate, and faces to the base fixing mechanism; the centers of the ejector rod clamping and ejecting mechanism, the base fixing mechanism and the welding head are on the same vertical line; a limiting device and a proximity switch are arranged on the electrode driving mechanism, and the electrode driving mechanism is fixedly connected with the welding head of the cylinder, and drives the welding head to linearly move along the vertical direction; a safety light curtain is arranged in the front of the frame so as to ensure the safety during operation; and a pneumatic control device is arranged near the frame. The welding machine can be used for replacing manual operation; the labor intensity is reduced, the coaxiality is excellent, and the pressure can be enabled to be stable and constant.

Description

technical field [0001] The invention belongs to the field of welding equipment, and relates to a special welding machine for iron core ejector rods. The welding machine is specially used for welding iron core ejector rods used on electromagnetic switches of automobile starters. Background technique [0002] At present, the moving iron core push rod used on the electromagnetic switch of the automobile starter is formed by welding and fixing a base and a push rod. The center of the base is provided with a counterbore for insertion of the ejector rod, and the ejector rod is inserted into the counterbore, and a boss is provided on the end of the insertion end. Usually, after the ejector rod is inserted into the counterbore on the base, the electrode is inserted into the counterbore by hand-held welding torch, and the boss at the end of the ejector rod is melted by electric discharge, so that the ejector rod and the base are welded and fixed. The coaxiality of the welding betwee...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a special welding machine for iron core ejector rods, the purpose of which is mainly to solve the problems of high labor intensity, uncontrollable coaxiality and unstable welding strength in the prior art.

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