Clamp used for welding of smoke collecting hood

Abstract

The invention relates to a clamp used for welding of a smoke collecting hood. The clamp comprises a platform used for containing the smoke collecting hood with folded edges; and a positioning structure used for positioning the smoke collecting hood is arranged on the platform. The clamp is characterized in that outer pressing blocks and inner pressing blocks are arranged on the platform; the outer pressing blocks are driven by a driving structure to be capable of pressing or being away from the outer end faces of the portions, adjacent to a welding position, of the folded edges of the smoke collecting hood; the inner pressing blocks are used for pressing the inner end faces of the portions, adjacent to the welding position, of the folded edges of the smoke collecting hood; and the pressing positions of the inner pressing blocks correspond to those of the outer pressing blocks. By means of pressing of the inner pressing blocks and the outer pressing blocks on the portions, adjacent to the welding position, of the folded edges, the folded edges adjacent to the welding position are free of arched welding deformation caused by welding, the flatness and the straightness of the folded edges are effectively guaranteed, and therefore the quality of the smoke collecting hood is improved.

Description

technical field [0001] The invention relates to a welding auxiliary device, in particular to a fixture used for fume collecting hood welding. Background technique [0002] The fume collecting hood is the main part of the range hood. It is generally formed by stamping and bending thin steel plates and then welded. The parts where the front hem, the left hem and the right hem are in contact with each other are fixed together by laser welding. For example, a Chinese utility model patent "A Seamless Welding Range Hood" whose patent number is ZL201320636234.6 (announcement number is CN203628752U) discloses such a smoke collecting hood. The quality of welding directly affects the quality of the fume collecting hood, because the fume collecting hood is made of thin steel plate, and the front fold, left fold and right fold are relatively long and narrow, if the positioning is not good during welding, it is easy to produce welding deformation, that is, The straightness and flatness...

AI Technical Summary

Problems solved by technology

The quality of welding directly affects the quality of the fume collecting hood, because the fume collecting hood is made of thin steel plate, and the front fold, left fold and right fold are relatively long and narrow, if the positioning is not good during welding, it is easy to produce welding deformation, that is, The straightness and flatness of the front fold, left fold and right fold are not ideal, thus affecting the quality of the smoke hood

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