Back support device of plate shearing machine

Abstract

The invention discloses a back support device of a plate shearing machine, and relates to the technical field of plate shearing machines. The back support device of the plate shearing machine comprises a synchronous lifting mechanism, and a support frame capable of lifting along with the synchronous lifting mechanism; the synchronous lifting mechanism includes two lifting base assemblies; and the two lifting base assemblies can enable the support frame to ascend and swing to a horizontal state in the support process under the effect of the synchronous lifting mechanism, can enable the horizontal descending speed of the support frame to be the same with the plate shearing speed in the shearing process, and can realize swing unloading of the support frame in the unloading process. The back support device of the plate shearing machine, proposed by the invention, can enable the ascending speed of the support frame to be the same with the plate shearing speed, can prevent the support frame from being collided with an upper scissor, can support a plate, can reduce the distortion of the plate, improves the plate shearing quality, adopts a modular design, can be wholly manufactured, can be mounted on different plate shearing machines, is convenient for installation, and is stronger in practicability.

Description

technical field [0001] The invention relates to the technical field of shearing machines, in particular to a rear material supporting device of a shearing machine. Background technique [0002] The existing supporting device of the shearing machine is mainly based on the positioning type (such as figure 1 As shown), the support frame 1 is made by welding several support arms 2 on a torsion shaft 3, the two ends of the torsion shaft 3 are installed and connected with the bearing 4, and the middle fulcrum of the cylinder 6 is installed on the cylinder. On the seat 8, the cylinder piston rod 7 is hinged with the support arm 2 of the support frame 1. When working, the cylinder piston rod 7 is stretched out, so that the support frame 1 swings to a horizontal position, and then the material is fed and positioned. After the plate 5 is pressed by the compression cylinder, the support frame 1 is reset to the unloading state (such figure 2 shown), then the upper knife rest moves do...

AI Technical Summary

Problems solved by technology

[0003] When cutting, in order to avoid the collision between the support frame 1 and the upper scissors, the support frame 1 should be reset before the shearing action starts. After the reset, the sheet 5 will sag and bend due to the loss of support under the action of gravity. There will be different degrees of distortion during the process; the reset speed of the support arm 2 is difficult to control, and the fast will bring a large impact, and the slow will affect the shearing beat; when continuously cutting large workpieces, the previous plate When the material 5 fails to slide out of the unloading plate 9 completely, if the material 5 is not removed and the rear material supporting device is continued to be used, when the material support 1 swings downward after completing the positioning function again, the material 5 will be pressed. If it is damaged, it will cause loss, and even damage the machine in severe cases; the support frame 1 is welded on the torsion shaft 3 by several sets of support arms 2. Due to the influence of assembly errors and welding deformation, it is difficult to ensure that the support arms 2 are on the same plane. , which is not conducive to the realization of full contact support and affects the positioning accuracy

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