Welding seam slot closing correction equipment for longitudinal welded pipe production

Abstract

The invention discloses welding seam slot closing correction equipment for longitudinal welded pipe production. The welding seam slot closing correction equipment comprises a correction base frame and an overhead transverse plate fixedly arranged on the upper portion of the correction base frame, the side, close to a feeding port, of the overhead transverse plate is fixedly connected with an extension flat plate and a transverse C-shaped frame in sequence, and the lower portion of the transverse C-shaped frame is fixedly connected with a lower edge transverse plate; and an inward-moving sliding hole is formed in the lower edge transverse plate, two clamping sliding blocks are connected into the inward-moving sliding hole in a sliding mode, a separating mechanism for adjusting the distance between the two clamping sliding blocks is arranged between the two clamping sliding blocks, the upper ends of the clamping sliding blocks are rotationally connected with edge grinding rotating rollers, and the upper ends of the edge grinding rotating rollers are fixedly connected with linkage rotating rods. According to the welding seam slot closing correction equipment, a coaxial rotating assembly drives two transmission wheels to rotate, so that the edge grinding rotating rollers coaxially rotating on the lower portions of the transmission wheels grind and clean impurities and burrs on the two sides of a welding seam slot of a pipe blank during rotating, the influence of the impurities generated by longitudinal shearing on steel pipe seam closing welding is reduced, and therefore the quality of a finished product obtained after steel pipe welding is improved.

Description

technical field [0001] The invention relates to the technical field of straight seam welded pipe production equipment, in particular to a weld seam correction device for straight seam welded pipe production. Background technique [0002] Longitudinal welded pipes, steel pipes made of hot-rolled or cold-rolled steel plates or steel strip coils welded on welding equipment are called straight seam welded pipes. After the strip steel is extruded by the forming equipment, the tube billet is welded by welding equipment, and the welding equipment generally uses high-frequency welding equipment. During the use of high-frequency welding equipment, the greater the power density at the weld, the faster the welding speed and the better the quality of the weld. [0003] The Chinese patent announcement number is CN202763262U, which discloses an online continuous internal welding device for straight seam submerged arc welding steel pipes. ; There is an internal welding device on the fram...

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Problems solved by technology

[0004] In the above technical solution, the tube blank can be welded by welding device, but the raw material of some tube blanks is narrow strip steel slit by wide strip steel slitting. During the slitting process, there are burrs and adhesions on the edge of some strip steel. In the case of impurities, the unevenness of this part of the edge is likely to cause the weld mouth to not be completely closed when the tube blank is welded together, or there are inclusions in the weld seam, which will affect the welding quality of the tube blank weld position and reduce the forming Quality of steel pipe after welding

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