Device for separating, delivering and depositing blanks

US4968018A · kind A · utility

Assignee

• PFAFF INDUSTRIES MASCHINEN AG · DE

Inventors

• Klaus Hoehne · Leverkusen, DE
• Bernhard Mertel · Enkenbach-Alsenborn, DE
• Erich Willenbacher · Karlsruhe, DE

Key dates

• Filing date: Oct 18, 1989
• Grant date: Nov 6, 1990
• Expiry date: Oct 18, 2009

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H3/00
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a device for separating, delivering, and depositing material blanks, for use in the textile industry or the like which improves heat transfer to the gripping surface in a device in which the heating device is arranged in such a way that it is protected from external forces. The device comprises a heatable gripping plate, which has a gripping surface and an expansion chamber adjacent thereto, in which a refrigerant is able to expand and thus cool the gripping plate to below the freezing point so that a material blank will freeze onto said gripping surface. The side of the chamber opposite the gripping surface is closed by a nonmetallic intermediate plate whose surfaces are essentially parallel to said gripping surface and can be coated with metal, and which intermediate plate has a noncoated surface with an electrical heating resistor arranged therein and a metal-coated surface that is in metallic connection with a plurality of webs that form a bridge for heat transfer from the intermediate plate to the gripping surface.