A plate pressing device for laser tailor welding

Abstract

The invention belongs to the technical field of laser welding, and particularly relates to a panel pressing device applied to laser tailor-welding. The panel pressing device comprises a pressing beam and pressing components, wherein the pressing beam is provided with a plurality of stepped through holes along the length direction; one set of the pressing component is arranged in each stepped through hole. According to a method, a plurality of groups of pressing components are used for vertically acting on a welded panel, and a plurality of groups of pressing load are applied, so that the welded panel can be pressed and fixed. The device disclosed by the invention has the advantages of being simple in structure, low in cost, convenient to dismount, replace and maintain and the like; the method is good in pressing effect, uniform in pressing force and high in panel correction quality; the panel can be effectively fixed; the requirements of laser tailor-welding on flatness of the pressed panel are satisfied; the welding quality are ensured not to be affected by cracking of the edge of the panel due to welding stress caused in a welding process.

Description

technical field [0001] The invention belongs to the technical field of laser welding, in particular to a plate pressing device for laser tailor welding. Background technique [0002] Tailored laser welding uses laser as welding energy to butt weld a number of plates with different materials, different thicknesses and different coatings. Due to the small diameter of the laser beam in laser welding, there are very strict requirements on the gap between the plates to be welded in the laser tailor welding process, and due to the existence of welding stress, the gap of the weld seam will change during the welding process, which will affect the welding quality. . [0003] In order to effectively fix the plate, meet the flatness requirements of laser tailor welding for the welded plate after compression, and ensure that the welding quality will not be affected by the edge of the plate due to welding stress during the welding process, the plate is usually pressed. [0004] In term...

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Problems solved by technology

The above patents all use an integrated pressure plate, which will cause the problem of uneven pressing force due to the deformation of the installation foundation, and it is inconvenient to disassemble, replace and maintain

[0005] The Chinese invention patent with application number 200610047643.7 "Crawler Type Permanent Magnet Laser Tailored Welding Steel Plate Positioning and Clamping Conveyor" uses a permanent magnet positioning clamper, and the use of magnetic compression will make the plates magnetic, which is not easy to separate after stacking, and The structure of the device is more complicated

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