Tubes and method and apparatus for producing tubes

US8561451B2 · kind B2 · utility

Assignee

• Modine Manufacturing Company · US

Inventors

• Frank Opferkuch · Unterensingen, DE
• Daniel Borst · Ratingen, DE
• Martin Ploppa · Pfullingen, DE
• Werner Zobel · Eppelheim, DE
• Jens Nies · Holzgerlingen, DE
• Andreas Stolz · Neckartenzlingen, DE
• Dieter Merz · Frankfurt, DE
• Siegfried Eisele · Karlsruhe, DE

Key dates

• Filing date: Aug 3, 2009
• Grant date: Oct 22, 2013
• Expiry date: Jan 1, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49391
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A system and method for producing flat tubes is described and illustrated. The flat tubes can be produced from at least one strip of endless band material having at least one wall part and an inner part formed with corrugations on a roller train provided with roller pairs, with the strip running in a longitudinal direction through the rollers and being shaped. The inner part of the flat tube can be formed with corrugations placed between the shaped wall parts, after which the closure of the flat tube is carried out. Production of the flat tubes can include forming spaced apart band thinning lines running in the longitudinal direction of the strip, and forming corrugation peaks and corrugation troughs at the band thinning lines.