Upward flanging device for stamped pieces

Abstract

The invention discloses an upward flanging device for stamped pieces. The upward flanging device comprises an upper die seat, a lower die seat, a material pressing core body, an upward flanging mechanism and a convex die, wherein the material pressing core body is mounted on the upper die seat through a material pressing nitrogen cylinder assembly and a material pressing core guide element; the upward flanging mechanism and the convex die are fixedly mounted on the lower die seat; the upward flanging mechanism comprises a driving sliding block, a tackle sliding block and an upward flanging sliding block; the upper part of the tackle sliding block is a cone body with a triangular section, and the lower part of the tackle sliding block is a cuboid; slopes matched with the upper part of the tackle sliding block are arranged at the lower parts of the driving sliding block and the upward flanging sliding block; a driving rod is arranged at the top of the driving sliding block; an upward flanging insert and a balance nitrogen cylinder assembly are arranged at the top of the upward flanging sliding block. The upward flanging device can provide high material pressing force, and the problems of insufficient mounting area, insufficient upward flanging power and failure in mounting a large upward flanging insert are solved; the upward flanging device is suitable for both small-size and large-size stamped parts.

Description

technical field [0001] The invention relates to a flanging device, in particular to a flanging device for stamping parts. Background technique [0002] In the development of complete automobiles, many stamping parts have an upturned edge (upper flanging) shape in order to realize the overlap or shape of the parts. Now it is generally realized by the standard reverse wedge in the stamping die, but due to the existing The standard reverse wedge provides less force, and is generally suitable for small flanging. For some complex shapes, if the existing reverse wedge is used, there will be insufficient mounting surface area and insufficient flanging driving force. [0003] For example, the Chinese utility model patent specification with application number 201420219823.9 discloses a wedge mechanism for turning holes upwards. The guide block has two cone structures, and the transmission rod is provided with inclined surfaces opposite to the two cone surfaces. The guide block moves...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a stamping parts upturning device to solve the deficiencies in the prior art. The problem that the entire insert cannot be installed when it is large, applies to both small stampings and large stampings

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