Device for controlling sheet-guiding elements driven by electromagnets in buckling folders

摘要

a) Device for controlling sheet-guiding elements driven by electromagnets in buckling folders. b) Device characterised in that, in the path for transporting the sheet, downstream of the detector 5, a processing device 9 is placed which converts the signals coming from the detector 5 respectively into at least two signals 10, 11 of different duration; and in that the outputs of the processing device 9 are connected to the electromagnet 12 via power-switching stages 13, 14 working at a different operating voltage. c) The invention applies especially to buckling folders for producing concertinaed openings. <IMAGE>