Lower knife rest device

Abstract

The invention relates to the technical field of shearing equipment, and provides a lower knife rest device, including a lower knife rest and a frame combined with the lower knife rest; the top of the lower knife rest is provided with a lower knife rest guard; A plurality of roller devices are arranged at intervals along the incoming material direction below the lower knife rest guard plate; the roller devices include mounting seats, roller frames, rollers and elastic reset members. By setting the roller device, the sheet material is supported and conveyed by the roller device during the sheet feeding process, which not only avoids the contact between the sheet material and the lower knife rest guard plate, but also solves the problem of serious wear of the lower knife rest guard plate in the prior art. Moreover, the rolling cooperation between the sheet material and the rollers in the roller device reduces the frictional force of the sheet material in the conveying process. During the shearing process, the shearing force makes the rollers of the roller device move downwards, and then the plate is carried by the lower knife rest guard plate, which avoids damage to the roller device due to the large shearing force.

Description

technical field [0001] The invention relates to the technical field of shearing equipment, in particular to a lower knife rest device. Background technique [0002] The top of the lower knife rest of the roll-cut double-sided shear is equipped with a lower knife rest guard. When feeding the plate, the sheet material slides and rubs on the lower knife rest guard. Every time the plate is fed, the lower knife rest guard will be worn. It will cause serious wear and tear of the lower knife rest guard, reducing the service life of the lower knife rest guard. [0003] The lower knife rest and the frame in the rolling-cut double-sided shear are connected together by studs, and because the size and joint position of the studs are limited by the structural space of the equipment, when the steel plate is cut, there will be studs. The phenomenon that the column is loose or elastically elongated will cause a gap between the joint surface between the lower tool holder and the frame, comm...

AI Technical Summary

Problems solved by technology

[0002] The top of the lower knife rest of the roll-cut double-sided shear is equipped with a lower knife rest guard. When feeding the plate, the sheet material slides and rubs on the lower knife rest guard. Every time the plate is fed, the lower knife rest guard will be worn. It will cause severe wear of the lower knife rest guard, reducing the service life of the lower knife rest guard

[0003] The lower knife rest and the frame in the rolling-cut double-sided shear are connected together by studs, and because the size and joint position of the studs are limited by the structural space of the equipment, when the steel plate is cut, there will be studs. The column is loose or elastically elongated, which leads to a gap between the joint surface between the lower tool holder and the frame, commonly known as seam; the greater the shear force, the greater the seam

A small seam start will increase the cutting edge clearance and affect the cutting quality, and a large seam start will damage the roll-cut double-sided shear

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