Patent ID: 8339260
Filing Date: 2012-12-25
Classification: B65H

Abstract:
1. A system for securing a hazardous area in a region of reel transport to a reel changer, the system comprising: a first contactless safety device at access boundaries of the region, which first contactless safety device can be deactivated to allow a known object to pass in and out of the hazardous area, and which first contactless safety device is embodied as a light beam barrier, which has multiple first light beams passing parallel to one another; an evaluation unit, the evaluation unit including means to detect a sequence of interruption of the multiple first light beams when any object passes in and out of the hazardous area, and, on the basis of this sequence, to detect a known object that is allowed access to the hazardous area, and in which case to deactivate the first contactless safety device; and a second contactless safety device which is permanently active, the second contactless safety device including at least two second light beams which extend transversely to a longitudinal extension of the known object and which each pass parallel to, and spaced from imaginary tangents which are located on an upper half of the known object.