Rolling edge folding machine

Abstract

The invention discloses a rolling edge folding machine which comprises a base and two roll frames. The two roll frames are located on the two sides of the base respectively. Roll plate frames are arranged on the roll frames and are vertical plate-shaped bodies. The two roll plate frames are parallel to each other. A plurality of rolling edge folding mechanisms are arranged on the inner sides of the roll plate frames. Each rolling edge folding mechanism is composed of an upper edge folding roll and a lower edge folding roll. The axes of the upper edge folding roll and the lower edge folding roll of each rolling edge folding mechanism are located on the same vertical line. Press plate clearances are arranged between the upper edge folding rolls and the lower edge folding rolls. The press plate clearances of the rolling edge folding mechanisms are located on the same horizontal plane. The upper edge folding rolls and the lower edge folding rolls are connected with synchronous power mechanisms. At least one of the upper edge folding roll and the lower edge folding roll of each rolling edge folding mechanism is provided with an edge folding mold strip portion. The shape of the edge folding mold strip portions of the rolling edge folding mechanisms is gradually changed from one ends to the other ends. Plates are driven by press plate traction portions of the upper edge folding rolls and the lower edge folding rolls to move along the rolling edge folding mechanisms, and edge folding is carried out on the plates according to the edge folding mold strip portions with the shape gradually changed.

Description

technical field [0001] The invention relates to a hemming device for sheet material forming. Background technique [0002] The traditional equipment for flanging of sheet metal is to fold and form the plate, that is, after the sheet is pressed, the edge of the sheet is folded by turning over the flanging mold. A problem with this equipment is that since the sheet itself is metal and has elasticity, after the sheet is folded once, it will partially bounce back. In order to solve this problem, usually when the sheet is turned over, the angle to be turned is greater than the actual angle to be formed. For example, when the sheet is folded at 90 degrees, the folded mold strip may need to be turned at an angle of 95 degrees. After removing the hemming molding, the 95-degree hemming on the edge of the sheet rebounds back to 5 degrees and then becomes a 90-degree hemming. However, in precision machining, there is obviously a problem of accuracy in this hemming method, because pr...

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention: the problem of sheet metal hemming recovery and the problem of complex hemming processing

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