Abstract: A labelling unit comprises: support means, a receiving member, adapted to carry an article on a top end and to receive a label on a lateral surface, and supported by the support means in a translating and rotating manner with respect to a given axis, driving means including a driving shaft carried by the support means in a rotating manner about the axis and engaging an axial hole of the receiving member, and releasable fastening means to connect the driving shaft to the receiving member in a predetermined axial position. The releasable fastening means comprise a spline element movable transversely to the axis between a retaining position, in which the spline element locks axially the receiving member onto the driving shaft, and a release position, in which the spline element allows extraction of the receiving member from the driving shaft and the support means along the axis.

Abstract: A labelling unit comprises: support means, a receiving member, adapted to carry an article on a top end and to receive a label on a lateral surface, and supported by the support means in a translating and rotating manner with respect to a given axis, driving means including a driving shaft carried by the support means in a rotating manner about the axis and engaging an axial hole of the receiving member, and releasable fastening means to connect the driving shaft to the receiving member in a predetermined axial position. The releasable fastening means comprise a spline element movable transversely to the axis between a retaining position, in which the spline element locks axially the receiving member onto the driving shaft, and a release position, in which the spline element allows extraction of the receiving member from the driving shaft and the support means along the axis.