A pressing mechanism for jointing of steel pipes

Abstract

The invention discloses a pressing mechanism for jointing of steel pipes. A first pressing roller, a second pressing roller and a third pressing roller are arranged on the pressing roller fixing seat, and the first pressing roller is located on the top of the pressing roller fixing seat The middle position; the two second pressure rollers are located on both sides of the top of the pressure roller fixing seat, and the angle a between the second pressure roller and the horizontal direction is 45 degrees; the width L1 of the first circular roller is the same as that of the second circular roller. The ratio of roller width L2 is 7:6; the two third pressure rollers are located at the bottom of both sides of the pressure roller fixing seat, and the angle b between the third pressure roller and the horizontal direction is 17 degrees, and the third pressure roller includes a roller The wheel row and the receiving bracket. There are multiple pressing rollers in the groove at the bottom of the receiving bracket. The pressing rollers are set by two round table rollers, which are concave in the middle and convex at both ends; the other end of the third pressing roller is connected to a hydraulic cylinder. ;From multiple angles, using a variety of pressing rollers for pressing can effectively avoid the deformation of the steel pipe during pressing, improve the pressing effect, and greatly improve the production efficiency of the enterprise.

Description

technical field [0001] The invention relates to a pressing mechanism, in particular to a pressing mechanism used for jointing of steel pipes. Background technique [0002] At present, most of the large-diameter steel pipes are made of single steel plates, which need to be fixed by spot welding after forming a cylinder to prepare for the welding process. Before spot welding, since the middle seam is left when the steel pipe is reeled, it is necessary to close the seam of the steel pipe. When the seaming machines at the present stage are used to seam steel pipes, most of them use pressing rollers to press from three directions: top, left and right. During use, it is found that pressing from only three directions will cause steel pipes to Due to uneven force, the process of pressing may cause deformation of the steel pipe, and the pressing effect is not good, which reduces the production efficiency of the enterprise. Contents of the invention [0003] The technical problem ...

AI Technical Summary

Problems solved by technology

When the seaming machines at the present stage are used to seam steel pipes, most of them use pressing rollers to press from three directions: top, left, and right. During use, it is found that pressing from only three directions will cause steel pipes to Uneven stress, the pressing process may cause steel pipe deformation, the pressing effect is not good, reducing the production efficiency of the enterprise

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