Entrance guide structure for section mill

Abstract

The invention discloses an entrance guide structure for a section mill. The guide structure includes an entrance part, the entrance part is connected with an outlet part, the inner side of the entrance part is tapered, and the fine end of entrance part is in smooth transition connection with the inner wall of the outlet part; the height direction of the outlet part is a combination of an inclinedsurface, a circular arc surface and a plane, the plane is arranged at the uppermost end, the plane is connected with the circular arc surface, and the circular arc surface is connected with the inclined surface; the outer side face of the entrance part is provided with a boss, and the boss is fixed with the entrance part through a bolt, and a plurality of support rolls are arranged below the outlet part. The structure has the advantages that the height direction of the outlet part and the support rolls below the outlet part are used for clamping a workpiece, the workpiece can not move up and down, it is ensured that the horizontal height of the moving direction of the workpiece is consistent, and the rolling accuracy is then ensured.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a guide structure for a section steel rolling mill. Background technique [0002] With the development of science and technology, the rolling of section steel requires higher and higher dimensional accuracy, and during the rolling process of section steel, the position accuracy of the inlet end has a great influence on the final dimensional deviation. The section steel generally enters from the entrance of the rolling mill by means of transport rolls, and the transport roll is a multi-roller structure. During the process of transporting the section steel, it is inevitably deformed by the gravity of the section steel, especially at the entrance of the rolling mill. The section steel is transferred between different conveying rollers, therefore, the deformation of each conveying roller is not the same, which causes the horizontal height of the section steel along the moving d...

AI Technical Summary

Problems solved by technology

The section steel generally enters from the entrance of the rolling mill by means of transport rolls, and the transport roll is a multi-roller structure. During the process of transporting the section steel, it is inevitably deformed by the gravity of the section steel, especially at the entrance of the rolling mill. The section steel is transferred between different conveying rollers, therefore, the deformation of each conveying roller is not the same, which causes the horizontal height of the section steel along the moving direction to be different, because the head of the section steel has just touched the front conveying roller, and the transportation The roller has not been under pressure yet, therefore, compared with the transportation roller at the rear end, the deformation is smaller, forming the "head warping" phenomenon of the section steel, and as the tail of the section steel is separated from the transportation roller, the "tail warping" phenomenon is formed, which causes the section steel rolling mill The entrance cannot guarantee the horizontal entry of the section steel, which will affect the accuracy of the final size

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