Separation device for removing a profiled element from a conveying surface, and extrusion machine provided with such a separation device

A separation device intended to separate a profiled element from a conveying surface which conveys the profiled element in a longitudinal direction so as to forward the profiled element with an advancing movement in a direction of which the profiled element displays a free end front edge, the separation device comprising:

• a detachment roller which is mounted so as to be able to rotate on a support about a detachment axis, and which is intended to be interposed between the profiled element and the conveying surface in order to cause the profiled element to become detached from the conveying surface,
• the support and the detachment roller being arranged to be able to adopt an engagement configuration, in which the detachment axis is oriented transversely to the longitudinal direction and parallel to the conveying surface, and in which the detachment axis is situated at a distance from the conveying surface which is such that a gap remains between the detachment roller and the conveying surface, that the detachment roller forms a stop which opposes a progression of the free end front edge of the profiled element on the conveying surface and prevents the free end front edge from crossing the gap, and that a detachment rotation of the detachment roller can be generated about the detachment axis that constrains the free end front edge of the profiled element to become detached from the conveying surface so that the profiled element can continue advancing movement by bypassing and crossing the detachment roller on an opposite side from the gap, while following the detachment rotation;
• and
• a detachment motor designed to generate the detachment rotation according to which the detachment roller is driven with respect to the support.