Patent ID: 7963223
Filing Date: 2011-06-21
Classification: B41F

Abstract:
1. A bending machine for bending a printing-machine printing plate, comprising a bending table for receiving the printing-machine printing plate, with a bending bar, and with a pressure pad fastened to a holding-down plate for fixing the printing-machine printing plate to the bending table, wherein the pressure pad is relatively moveable with at least one degree of freedom with respect to the holding-down plate and wherein the holding-down plate is held at a defined clearance with respect to the printing plate, wherein to execute a movement of the pressure pad, a linear drive is provided which introduces uniformly, over an entire length of the pressure pad, a clamping force for fixing the printing-machine printing plate on the bending table and wherein the linear drive is a hose which is expandable radially by a fluid and which is arranged between the holding-down plate and the pressure pad and is supported on the holding-down plate for force transmission, wherein an expansion of the hose directly presses the pressure pad against the printing-machine printing plate to provide the clamping force for fixing the printing-machine printing plate on the bending table, wherein the clamping force provided by the expansion of the hose acts uniformly over an entire length of an edge of the printing plate to be bent, and further wherein the pressure pad has a spring steel element and a plastic pad, wherein the spring steel element is fastened on a first longitudinal side to the holding-down plate, and wherein the hose is arranged between a second longitudinal side of the spring steel element and the holding-down plate.