Pre-bending machine

Abstract

The invention discloses a pre-bending machine comprising a material conveying mechanism, a main machine, a lubricating system and an electronic control system. The pre-bending machine is characterized in that the material conveying mechanism comprises a first material conveying unit and a second material conveying unit, the first material conveying unit and the second material conveying unit bothcomprise material conveying rollers, centring devices and clamping material conveying devices, wherein the material conveying rollers are sequentially arranged, and the clamping material conveying devices are close to one side of the main machine; the main machine comprises a first main machine unit and a second main machine unit which are separately erected at both sides of the main machine, thefirst main machine unit and the second main machine unit both comprise C-shaped stands, upper moulds, lower brackets and upper clamping rollers, wherein the lower brackets can carry lower moulds to move up and down; a main machine width adjusting device is arranged between the first main machine unit and the second main machine unit and comprises transmission screw rods and sliding rails, whereinthe transmission screw rods are respectively fixedly connected to the C-shaped stands through corresponding nuts, and the stands are connected with the sliding rails through slide blocks. The invention has the advantages of small resilience amount of preformed steel plate workpieces, high forming speed, high efficiency, undamaged workpieces, good bending quality, and the like.

Description

technical field [0001] The invention relates to the technical field of preforming for metal plate processing, in particular to a pre-bending machine for realizing the pre-bending of the edge of a steel plate workpiece. Background technique [0002] The pre-bending machine belongs to the pre-forming equipment for metal plate processing. The pre-bending of the plate edge of the steel plate workpiece is to ensure that the steel pipe is made into a more accurate circle. Therefore, the pre-bending machine plays an indispensable role in the process of making the steel pipe. . Practice has shown that if there is no pre-bending, even if there is a compression rate of about 1% when the O-type press is formed, there will still be a straight section at the edge of the steel plate, resulting in a sharp-nosed section structure of the tube after forming. "Peach shape", so the steel pipe cannot meet the required diameter and roundness. Although the pre-bending machine in the prior art ca...

AI Technical Summary

Problems solved by technology

Practice shows that if there is no pre-bending, even if there is a compression rate of about 1% when the O-type press is formed, a straight section will still appear on the edge of the steel plate, resulting in a sharp-mouthed cross-sectional structure of the tube after forming. "Peach shape", so the steel pipe cannot meet the required diameter and roundness

Although the pre-bending machine in the prior art can meet the needs of realizing the plate edge pre-bending process of the steel plate workpiece, it also has one or another deficiency and needs to be further improved

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