Device for making welded corner joints

US4752350A · kind A · utility

Assignee

• Firma Urban GmbH & Co. Maschinenbau KG · DE

Inventor

• Helmut Schuster · Stockach, DE

Key dates

• Filing date: Nov 13, 1986
• Grant date: Jun 21, 1988
• Expiry date: Nov 13, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T156/1066
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

In the manufacture of welded corner joints between hollow plastic sections shaped parts are used which abut against the plastic sections during the heating-up operation and also during the welding process. In this way the result is achieved that the weld bead or plastic rim which forms during the welding, is pressed into the hollow cavity (19) or into the hollow cavities so that a subsequent operation for the purpose of removing the weld bead is not necessary.