Method for cold-bending dovetail groove in fireproofing accurate steel materials and device thereof

Abstract

The invention discloses a method for cold-bending dovetail groove in fireproofing accurate steel materials or other metal materials, the materials comprise right angle grooves of which the steel strip longitudinal roller is bent to be in cap shape, and the top part and the lateral part of the groove is bent backwards to arc shape until the bend angle achieves the requirements of the dovetail angle according to the product requirement, the arc part of the top part and the lateral part of the groove is pressed and planished ; the invention also discloses the equipment suitable for the method, as the bent section of the steel plate is located at the radial face of the roller, therefore, the bent point can be exerted with sufficient forming pressure with ease, the arc of the bent point is small, the equipment is simplified, and the production is stable and the forming speed is fast.

Description

technical field [0001] The invention belongs to the technical field of profile roll forming, and in particular relates to a roll forming method and equipment for precision cold-formed dovetail grooves of fireproof steel profiles. Background technique [0002] Roll forming refers to the use of multiple pairs of rolls with a specific profile at room temperature to make the metal plate move in a straight line in the longitudinal direction while continuously bending it laterally until it is processed into a profile with a specific cross-sectional shape required by the user, without A sheet metal deep processing process that changes its thickness. [0003] figure 2 Shown is a cross-sectional view of a fire-resistant precision cold-formed steel profile with a dovetail groove at the bottom produced by roll forming technology. The profile contains a dovetail groove with a dovetail angle of less than 90°. The dovetail groove in the profile can be used not only as a slot for multi-p...

AI Technical Summary

Problems solved by technology

The traditional method of dovetail groove forming is to use auxiliary rollers inclined at a certain angle to roll forming. It is very difficult to install and adjust the auxiliary rollers, and the production process is unstable. For the forming of dovetail grooves in thick-walled steel plates, due to the high pressure required for forming, the traditional It is difficult to provide sufficient forming pressure for the auxiliary roller structure of the method

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