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

A separation device (1) intended to separate a profiled element (2) from a conveying surface (3) which conveys the profiled element (2) in a longitudinal direction (L0) so as to forward the profiled element (2) with an advancing movement (FM2) in a direction of which the profiled element (2) displays a free end front edge (2F), the device comprising:

• a detachment roller (10) which is mounted so as to be able to rotate on a support (11) about a detachment axis (X10), and which is intended to be interposed between the profiled element (2) and the conveying surface (3) in order to cause the profiled element (2) to become detached from the conveying surface (3),
• the support (11) and the detachment roller (10) being arranged to be able to adopt an engagement configuration (C1), in which the detachment axis (X10) is oriented transversely to the longitudinal direction (L0) and parallel to the conveying surface (3), and in which the detachment axis (X10) is situated at a distance (H10) from the conveying surface (3) which is such that a gap (12) remains between the detachment roller (10) and the conveying surface (3), that the detachment roller (10) forms a stop which opposes a progression of the free end front edge (2F) of the profiled element on the conveying surface (3) and prevents the free end front edge (2F) from crossing the gap (12), and that a detachment rotation (R10) of the detachment roller (10) can be generated about the detachment axis (X10) that constrains the free end front edge (2F) of the profiled element to become detached from the conveying surface (3) so that the profiled element (2) can continue advancing movement (FM2) by bypassing and crossing the detachment roller (10) on the opposite side from the gap (12), while following the detachment rotation (R10).