Flash butt welding machine for vehicle door corner welding

Abstract

The invention discloses a flash butt welding machine for vehicle door corner welding, which comprises a base, clamping devices, an upsetting mechanism and an electric controller, wherein the clamping devices comprise a first clamping device for clamping a right welding piece and a second clamping device for clamping a left welding piece. The flash butt welding machine is characterized by also comprising a clamp adjusting device and an adjusting bottom plate capable of moving freely in a space, wherein the second clamping device is fixedly arranged on the adjusting bottom plate; an upsetting device comprises a guide rail seat, a moving component slipping along the guide rail seat and a servo driving device for driving the moving component to move; the first clamping device is fixedly arranged on the moving component; and a first insulating plate is arranged between the bottom of the clamp adjusting device and the base, and a second insulating plate is arranged between the bottom of theguide rail seat and the base. Compared with the prior art, the flash butt welding machine can randomly adjust the space placing position of the welding piece to ensure the welding quality and the appearance and profile requirements of a welded product; and the clamp adjusting device is convenient and simple in operation, and improves the welding efficiency.

Description

technical field [0001] The invention relates to a butt welding machine, in particular to a flash butt welding machine used for welding the corners of automobile door frames. Background technique [0002] At present, the manufacturing process of automobile door frames can be basically divided into two types: one is integral stamping forming, and the other is step-by-step forming. Among them, the overall stamping process will waste the material in the middle part during the stamping process, and the structural strength of the product after stamping is poor; while the step-by-step forming process can save materials and reduce costs. For the step-by-step molding process, welding is a very important link. The quality, precision and strength of welding have a very important impact on the strength of the car door frame, glass lifting, door hinge installation and dimensional accuracy. Traditional welding mostly uses plasma welding, CO2, MAG, TIG and other welding methods to weld th...

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Problems solved by technology

[0004] However, the welding requirements for the corner welding of automobile door frames are different from those of common profiles. In addition to ensuring the welding quality, the appearance and profile requirements of the welded product must also be guaranteed. This requires that the welding fixture must be able to achieve convenient adjustment. When the appearance characteristics of the welded product do not meet the welding requirements, the quick adjustment of the fixture can be realized, so that the placement of the parts to be welded meets the production requirements; in addition, for the car door fillet welding, generally, each car needs to complete Weld 4 to 6 corners of door frames with different structures, that is, after a certain amount of each corner is produced, it will switch to the production of another corner (the same is true for the previous process), and the fillets of different structures need to correspond to a set of corresponding Welding fixtures, in order to improve production efficiency and reduce equipment cost investment, this requires the rapid replacement of different fixtures on the same welding machine. The above-mentioned patents and butt welding machines in the prior art lack the ability to flexibly adjust and quickly adjust the fixtures. The function and structure of the replacement cannot be well adapted to the special requirements of the corner welding of the automobile door frame, and further improvement is needed

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