Device for transmitting a rotational movement

The invention relates to a device for transmitting a rotational movement from a driveshaft to a rotary gripper head having a plurality of rotary grippers for twisting the ends of a wrapping envelope on a wrapping machine for sweets. The aim of the invention is to avoid breakdowns of the device under high axial loads. The object of the invention is to design the device so that sweet powder settling on the driveshaft does not lead to any mechanical overload in the event of a format adjustment. This is achieved, according to the invention, by means of an articulated ring which is fastened to a sleeve on the driveshaft and has two diametral radial pivot pins arranged projecting on the free end face, and a further such articulated ring fastened axially opposite to a flange on the rotary gripper head in such a way that its likewise projecting pivot pins, offset at 90 DEG on the circumference, engage in the same plane, together with the pins of the first-mentioned articulated ring, into corresponding radially arranged bushes of an annular part surrounding these.