Safety device for a rotary printing machine for printing on webs

摘要

The invention is intended to allow intermediate storage of web material accumulating in the event of the web tearing. The safety device is intended to monitor the entire width of the web and have a short reaction time. The invention consists in the fact that one of the cylinders (1, 2) guiding the web is designed as a winding device for the excess web material occurring after a web has torn, and in that detectors (28, 29) for torn webs are provided, which are directly assigned to one of the cylinders (1, 2). The invention can be used in web-fed printing machines and in all other web-processing machines. <IMAGE>