Tooth-shaped multi-pole-point transom-connecting projection welding method for cable ladder

Abstract

The invention relates to a tooth-shaped multi-pole-point transom-connecting projection welding method for a cable ladder. The tooth-shaped multi-pole-point transom-connecting projection welding methodcomprises the steps that the ends of workpieces with the connected end faces are manufactured to be in tooth shapes, the tooth shapes of the ends of the workpieces serves as protruding points duringwelding, the workpieces with the protruding points are clamped up and down by tool clamps, plane workpieces are aligned with the protruding point workpieces and fixed and clamped by tool clamps, the clamps for the two parts of workpieces are all provided with conductive blocks, and the conductive blocks are closely attached to welded workpieces with connected transoms to form a current channel required by welding; and a plurality welding stations can be arranged in the length direction of the cable ladder for simultaneous welding, the welded positions of the plane workpieces are compressed bythe workpieces with the tooth-shaped protruding points during welding, the current is input while compressing is conducted, under the action of the large current, the conductive contact faces of the tooth-shaped protruding points are small, the resistance is increased instantly, and thus the positions, making contact with the plane, of the workpiece protruding points generate an overheating reaction to form a point-like continuous welded face.

Description

technical field [0001] The invention relates to a multi-pole resistance welding projection welding method used for connecting rungs in the manufacture of cable ladder frames, and belongs to the technical field of resistance projection welding. Background technique [0002] Since the bottom plate or crosspiece and side plate of the light reinforced cable ladder frame need to be made separately and then assembled into a whole, when the side plate and bottom plate or crosspiece are assembled, the end face of the bottom plate or crosspiece must be connected with the plane of the side plate as a crosspiece At present, the welding process used in the assembly of the bottom plate of the cable ladder frame or the crosspiece and the crosspiece of the side plate is gas shielded welding. The filler wire is melted and welded by pulse short circuit. Since the cable ladder frame uses a thin plate, this welding method The phenomenon of unstable arc start often occurs, and it is easy to cau...

AI Technical Summary

Problems solved by technology

[0003] Technical problem: The object of the present invention is to provide a tooth-shaped multi-pole crosspiece connection projection welding method for cable ladders, which can solve the problems of low efficiency, low Problems such as high energy consumption, low precision, large deformation, unstable quality, and affecting appearance; solve the problem that when the materials are selected from anti-corrosion hot-dip galvanized steel sheets and stainless steel sheets, gas shielded welding will damage the anti-corrosion properties of the welds and affect the product The quality and overall appearance of the ladder frame products meet the requirements of high-quality social development

Images