Method and apparatus for producing a composite component

US8241552B2 · kind B2 · utility

Assignee

• Daimler AG · DE

Inventors

• Helmut Augustin · Hamburg, DE
• Kai-Uwe Dudziak · Seevetal, DE
• Juergen Falke · Rellingen, DE
• Hans Nottbusch · Hamburg, DE
• Matthias Schroeder · Badendorf, DE
• Jens Schult · Seevetal, DE

Key dates

• Filing date: Sep 25, 2007
• Grant date: Aug 14, 2012
• Expiry date: Oct 5, 2028

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29L2023/00
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

In a method and apparatus for producing a composite component, a tubular hollow section blank is placed into a die cavity of a combination tool comprising an inner high-pressure shaping tool and an injection-molding tool. The combination tool is filled with a fluid in such a way that the blank is wetted from the inside by the fluid, and the ends of the combination tool are sealed by two axial molding plugs. The filled blank is then expanded under pressure . The finished hollow section is plastic-coated in the same tool. The hollow section is emptied after shaping in the sealed state, at least until it is no longer dripping, the pressurized fluid being expelled under pressure from the hollow section through at least one discharge channel formed in the axial molding plugs.