GRIPPER SYSTEM FOR A CYLINDER OF A SHEET-FED PRINTING PRESS WHICH GUIDES SHEETS

The invention relates to a gripper system ( 100 ) for a cylinder ( 3 ) of a sheet-fed printing press ( 1 ) which guides sheets and which is used to detect printed sheets. Said system comprises a gripping shaft ( 9 ) and grippers ( 8 ) which are arranged on the gripper shaft ( 9 ) and which, during a synchronised normal operation, can be introduced into a cylinder channel of a cylinder ( 3 ) which guides the sheet, by means of a pivoting movement of gripper shaft ( 9 ), such that the gripper ( 8 ) is arranged completely in the cylinder contour after pivoting. According to the invention, the gripper system ( 100 ) can be displaced in a radial manner during a cylinder phase displacement such that the grippers ( 8 ) of the gripper system ( 100 ) enter into a recess and strike an elastically mounted gripper strike bar ( 10 ) which enables the gripper ( 8 ) to be struck during the radial displacement of the gripper system ( 100 ).