Packaging machine for tubular bags

US7559184B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Holger Grzonka · Erlangen, DE
• Michael Kaever · Erlangen, DE
• Alexander Lotze · Freital, DE

Key dates

• Filing date: Jul 25, 2005
• Grant date: Jul 14, 2009
• Expiry date: Nov 20, 2025

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65B41/18
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

When viewing in the direction of material flow of a flat film web of a packaging machine for tubular bags, a film conveying device is situated behind a shaping shoulder of a packaging machine for tubular bags. The film conveying device enables the film web to be drawn off from a film delivery device and pulled over the shaping shoulder. The film web can be shaped by means of the shaping shoulder into a bag extending in the direction of material flow. When viewing in the direction of material flow, a film joining device is situated behind the shaping shoulder. This film joining device can join together opposite lying edge areas of the film web. An incorrect position of the film web perpendicular to the direction of material flow can be detected and transmitted to a control device by a sensor device located, when viewing in the direction of material flow, between the shaping shoulder and the film joining device. A tracking device can be controlled by the control device in order to counteract the incorrect position of the film web perpendicular to the direction of material flow.