A kind of production method of curved corrugated plate

Abstract

The invention provides a method for producing an arc-shaped corrugated plate, and relates to the field of cold roll forming. The method for producing the arc-shaped corrugated plate comprises the steps that 1, a steel plate roll is uncoiled, and an unfolded steel plate is in a slab shape; 2, the head of the steel plate is fed into a rolling unit, the rolling unit comprises a plurality of die roll sets arranged at intervals, the multiple die roll sets are arranged in an arc track, each die roll set is composed of an inner roll arranged on the inner side of the arc track and an outer roll arranged on the outer side of the arc track, and an arc-shaped corrugated plate forming path is formed among the multiple die roll sets; and 3, the steel plate sequentially passes through the multiple die roll sets along the corrugated plate rolling forming path, ripples are gradually formed on the steel plate from a slab shape under the action of the clamping force of the inner rolls and the outer rolls, and meanwhile an arc bent inwards is formed. Therefore, the arc-shaped corrugated plate is formed. According to the method for producing the arc-shaped corrugated plate, ripple forming and the arc are completed in the same procedure.

Description

technical field [0001] The invention relates to the field of cold bending forming, and relates to a production method of a curved corrugated plate used for rolling forming longitudinal corrugations of spliced ​​corrugated pipes. Background technique [0002] Curved corrugated plates are mainly used in spliced ​​corrugated pipes, which are widely used in culverts in roads, railways, bridges, passages, retaining walls, and various mines, roadway retaining walls, etc. . The new application frontier of corrugated plates is the urban pipe gallery, which is a circular corrugated pipe made of corrugated metal plates or arc corrugated plates, and other shapes such as dustpan, horseshoe, arch And special-shaped bellows such as pear-shaped. [0003] At present, the above-mentioned corrugated plate processing is mainly completed by two processes of forming and arc bending. The existing way of roll forming longitudinal corrugated plate, the forming principle is to arrange several for...

AI Technical Summary

Problems solved by technology

Due to the excessive bending force, there are inevitably problems such as poor bending effect, poor lap joint degree of plate side when making bellows, etc.

In addition, the corrugated plate corrugated forming and arc bending used for arc bending assembly are produced by two independent processes. The corrugation is formed first, and then the arc is bent, which not only causes discontinuous production of the forming process, but also increases the working pressure of the arc bending process.

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