PACKAGING MACHINE FOR TUBULAR BAGS

摘要

When viewing in the direction of material flow of a flat film web (1), a film conveying device (5) is situated behind a shaping shoulder (4) of a packaging machine for tubular bags. The film conveying device enables the film web (1) to be drawn off from a film delivery device (2) and pulled over the shaping shoulder (4). The film web (1) can be shaped by means of the shaping shoulder (4)into a bag extending in the direction of material flow. When viewing in the direction of material flow, a film joining device (6) is situated behind the shaping shoulder (4). This film joining device can join together opposite lying edge areas (7, 7') of the film web (1). An incorrect position of the film web (1) perpendicular to the direction of material flow can be detected and transmitted to a control device (9) by a sensor device (8) located, when viewing in the direction of material flow, between the shaping shoulder (4) and the film joining device (6). A tracking device (10) can be controlled by the control device (9) in order to counteract the incorrect position of the film web (1) perpendicular to the direction of material flow.