Patent ID: 8905346
Filing Date: 2014-12-09
Classification: B65H

Abstract:
1. A roll unwinding device for a web-fed printing machine, the roll unwinding device including a frame, at least one roll holding device supported by the frame and embodied as a clamping shaft having a rotational axis and with at least one carrier element connected to the clamping shaft for movement in a radial direction with respect to the rotational axis and at least one drive motor connected to the clamping shaft by at least one torque transfer element, the roll unwinding device further having at least two clamping shaft bearings, at least one of the clamping shaft bearings being connectable to the clamping shaft to transfer torque from the at least one torque transfer element to the clamping shaft, and wherein the at least one clamping shaft bearing is connected to the at least one drive motor through the at least one torque transfer device to transfer torque to the clamping shaft, the at least two clamping shaft bearings each being arranged to rotate individually at least partially with respect to the rotational axis of the clamping shaft and being able to pivot with respect to the frame of the roll unwinding device around a pivot axis that is different from the rotational axis the clamping shaft and wherein the at least two clamping shaft bearings are each embodied as a bearing cap.