A Straightening Device Used to Eliminate Bending Defects of High Frequency Longitudinal Welded Pipe

Abstract

The invention discloses a straightening device for eliminating bending defects of high-frequency straight seam welded pipes, which comprises a pressing device with an inverted V-shaped block, a lower V-shaped seat, a supporting trolley and a lower supporting plate; the pressing device It includes an upper support plate, a hydraulic cylinder installed on the frame and an inverted V block. The upper support plate is provided with a through hole, and the threaded shaft head under the hydraulic cylinder passes through the through hole on the upper support plate and the inverted V block. The built-in thread at the bottom of the type block is matched, the lower support plate is fixed on the stand, the middle part of the lower support plate is provided with a lower V-shaped seat, and the end is provided with a support trolley; Driven by the driving force, it moves downwards and acts on the welded pipe placed on the lower V-shaped seat and the supporting trolley. The invention not only effectively eliminates the bending defects of the welded pipe and ensures good surface quality of the welded pipe, but also realizes the straightening of the local bending of the welded pipe by adjusting the position of the lower V-shaped seat, and improves the quality of the finished product.

Description

technical field [0001] The invention relates to the field of special equipment for mechanical straightening, in particular to a straightening device for eliminating bending defects of high-frequency straight seam welded pipes. Background technique [0002] At present, most manufacturers of high-frequency longitudinal welded pipes in China often produce steel pipes with excessive curvature during the processing of high-frequency longitudinal welded pipes. For such welded pipes with bending defects, traditional roller straightening is usually used. The straightening machine is used to straighten the bending, but there are often roll marks on the surface of the welded pipe after straightening, which affects the surface processing quality and appearance of the welded pipe, and the straightening effect is not ideal. New straightening device for surface finish quality of welded pipes. Contents of the invention [0003] The object of the present invention is to overcome the defi...

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Problems solved by technology

[0002] At present, most manufacturers of high-frequency longitudinal welded pipes in China often produce steel pipes with excessive curvature during the processing of high-frequency longitudinal welded pipes. For such welded pipes with bending defects, traditional roller straightening is usually used. The straightening machine is used to straighten the bending, but there are often roll marks on the surface of the welded pipe after straightening, which affects the surface processing quality and appearance of the welded pipe, and the straightening effect is not ideal. New Straightening Device for Surface Processing Quality of Welded Pipe

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