Method and device for removing a slug from a hydroforming tool

Details Method and device for removing a slug from a hydroforming tool Method and device for removing a slug from a hydroforming tool

1999-03-05

1999-12-28

Jones, David

Metal deforming

By application of fluent medium, or energy field

With cutting

72427, 83 54, 294211, B21D 2602, B21D 2828

Patent

active

060065664

ABSTRACT:
A method and a device for removal of a slug separated from a hollow profile by means of a fluidic internal pressure from a hydroforming tool. The slug is separated from the hollow profile from the inside to the outside by the retraction of a plunger integrated into the hydroforming tool and clearing a slug channel when retracted, and is forced out of the die cavity of the hydroforming tool into the slug channel. Then, with the hollow profile in a zero-pressure state, the slug, which after it is pressed in abuts the end of the plunger, is removed by a removal tool from the hydroforming tool. In order to remove slugs from the hydroforming tool in any desired position of the slug channel that leads into the die of the hydroforming tool, in which the slug is initially received after perforation, in simple fashion, the slug is held at the end of the plunger during its stay in the slug channel by an adhesion means connected with the plunger. Then, after the hydroforming tool is opened and the finished hollow profile is removed, the slug, while continuing to adhere to the end of the plunger, is guided by means of the plunger and of the removal tool designed with adhesion means into the open die cavity. The slug and the area of the removal tool on which the adhesion means acts assume a relative position opposite one another, after which the slug is separated from the plunger and then adheres to the removal tool, by means of which the adhering slug is then removed from the hydroforming tool.

REFERENCES:
patent: 3991456 (1976-11-01), Lieser
patent: 4989482 (1991-02-01), Mason
patent: 5398533 (1995-03-01), Shimanovski et al.
patent: 5460026 (1995-10-01), Schafer
patent: 5816089 (1998-10-01), Marando

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