Method and device for producing closed profiles

US8459076B2 · kind B2 · utility

Assignee

• ThyssenKrupp Steel Europe AG · DE

Inventors

• Thomas Flehmig · Ratingen, DE
• Michael Brüggenbrock · Rosendahl, DE

Key dates

• Filing date: Mar 23, 2010
• Grant date: Jun 11, 2013
• Expiry date: May 16, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B21D5/015
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A device for producing at least partly closed profiles from a blank includes at least one first die and at least one second die which can be positioned opposite the first die. The first die has a cavity and two side walls, wherein the side walls and the cavity of the first die can be raised and lowered relative to one another. A U-punch is provided to produce a U-shaped cross-sectional shape of the blank with the first die. The second die of the device has a cavity for producing an at least partly closed cross-sectional shape from a U-shaped blank. The device also has at least one supporting core. The cavity of the second die has elongated side walls in the direction of the first die, with which, the side walls of the first die can be lowered relative to the cavity of the first die.