Device for attaching tubular segments of plastic film on vessels

US4519186A · kind A · utility

Assignee

• Krones AG Hermann Kronseder Maschinenfabrik · DE

Inventors

• Horst Winter · Karlsruhe, DE
• Erich Eder · Donaustauf, DE

Key dates

• Filing date: Feb 28, 1983
• Grant date: May 28, 1985
• Expiry date: Feb 28, 2003

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T156/1773
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A device for slipping segments of film, such as originally flattened but tubular segments of plastic film, on vessels such as bottles. A rotor rotates about a horizontal axis. Sucker devices mounted on swivel arms and expanding mandrels are arranged alternately about the circumference of the rotor. The flat sleeve segments are fed toward the rotor and are attracted by a sucker device. As the rotor rotates from the position in which a sleeve is gripped by a sucker device the sucker parts spread to open the tubular sleeve and the arm carrying the sucker is caused to swing and turn the sleeve segment 90.degree. whereupon the sleeve is passed over the presently unexpanded mandrel which is circumferentially adjacent the designated arm and its suckers. The mandrel is caused to expand for holding the sleeve and the sucker is timely released. Meanwhile, the mandrel is caused to turn so the axis of the tubular sleeve changes from a true radial direction to a vertical direction at which time the tubular sleeve begins to slip over one of the moving vessels. As the vessel advances out of a screw conveyor at this time, the vessel enters between parallel belts that decline in the direction of ve…