Roller device for directly forming square pipe and forming method

Abstract

The invention relates to a roller device for directly forming a square pipe. The roller device is used for directly making a plate body into the square pipe. The roller device comprises a coarse forming section and a sealing section in sequence. The coarse forming station is use for bending the plate into the square pipe with an opening, the sealing section is used for sealing an opening of the square pipe, the coarse forming section comprises a first section and a second section which are connected in sequence, the first section is used for forming a first outer side section and a second outer side section of the plate body through bending, the second section is used for forming a left side section, a middle section and a right side section of the plate body through bending, and the firstouter side section, the left side section, the middle section, the right side section and the second outer side section are sequentially connected. Different rolling angles are achieves at differentstations, finally, complete universalization of a roller is completed before forming welding and section sizing, and the produced square pipe is high in yield.

Description

technical field [0001] The invention relates to a roll device, in particular to a roll device and a forming method for direct forming of a square tube. Background technique [0002] The square tube is a square tube shape, generally a hollow structure, and many kinds of materials can form a square tube body. Most of the square tubes are mostly steel tubes, which are unpacked, flattened, crimped, welded to form a round tube, and then rolled into a square tube from the round tube and then cut to the required length. Square tubes are widely used, such as structural square tubes, decorative square tubes, architectural square tubes, mechanical square tubes, etc. [0003] In addition, the square tube production is to use the strip steel to be cold-bent into a closed round tube through a multi-channel forming frame. After high-frequency welding, it is then sized and shaped into a square tube or a rectangular tube. The disadvantage of this kind of cold-bending forming is that each ...

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of cold bending forming is that each specification of pipe requires a corresponding specification of rolls, and the unit needs to replace the rolls when changing the size of the steel pipe

This results in high roll costs and a lot of time wasted changing rolls

[0004] It can be seen that rounding and squaring forms the flat strip steel into a round tube, and then forms it into a four-sided straight rectangular tube, which adds some unnecessary deformation processes, increases deformation energy consumption and roll wear

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