Daimler-benz Ag

Daimler Chrysler Ag

Klaus Mueller

Volker Thoms

Andreas Poellmann

Udo Bahrke

Extrusion arrangement for manufacturing bent workpieces, having an extrusion die which is guided in an extrusion chamber and compresses material situated in the extrusion chamber and presses it through a bottom die arranged on a head-side end of the extrusion chamber. At least two further bottom die elements are arranged behind the bottom die in a parallel adjoining manner and are displaceably and rotatably disposed such that their successive passage openings form an extrusion duct of a variable curvature and twisting. For producing hollow profiles, an arbor is provided in the interior of the extrusion chamber, whose extension extending through the outlet opening of the bottom die and into the passage openings of the bottom die elements consists of a plurality of segments which are movably connected with one another.

Extrusion arrangement

An extrusion arrangement is disclosed for manufacturing hollow-profile workpieces made of metal, including an extrusion die which is guided in an extrusion chamber and compresses material situated in the extrusion chamber. For forming an extruded hollow profile, the extrusion die presses the material through a bottom die arranged on a head-side end of the extrusion chamber, a forming of the extruded hollow profile taking place by means of internal high pressure during the emerging from the bottom die. Advantageously, a plurality of forming tools are provided which can be alternately arranged adjoining the outlet opening of the bottom die for receiving an extruded hollow profile and its forming, and, for cooling and releasing the formed extruded profile, the tools can be removed from the bottom die.

Extrusion arrangement and process for manufacturing hollow-profile

A process and an extrusion arrangement are suggested for cutting extruded hollow profiles while heated from the extruding process heat into the required lengths by means of a high-energy beam or jet moved along with the extruding operation. The interior of the extruded hollow profile is filled with a light-weight material at least at the cutting points. The light-weight material is advantageously an expansive foam mass, such as an aluminum foam or a plastic foam. The filling of the extruded hollow profile takes place either by coextrusion or by way of an arbor or a hollow-chamber bottom die of the extrusion arrangement.

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Berlin, Germany

Klaus Mueller