Automatic machine for providing corrugated sheet-like elements and vane for said machine

An automatic machine for providing corrugated elements, said automatic machine comprises an upper conveyor and a lower conveyor, said upper and lower conveyors configured for a continuous corrugation of a ribbon which moves in a longitudinal direction of motion, said upper conveyor comprising a plurality of upper abutment elements extended transversely with respect to said longitudinal direction of motion, said lower conveyor comprising a plurality of lower abutment elements extended transversely with respect to said longitudinal direction of motion, said automatic machine comprising a work area wherein said upper abutment elements are interleaved between said lower abutment elements,

• wherein said upper abutment elements each comprise a bar adapted to make contact with said ribbon and said lower abutment elements each comprise a vane, which has a wedge-shaped transverse cross-section and which is adapted to receive said ribbon in order to deform said ribbon,
• said automatic machine further comprising at least one containment element arranged at said lower abutment elements at least in said work area, said at least one containment element being configured to keep said ribbon engaged with said lower abutment elements, said at least one containment element having a longitudinal extension, in said longitudinal direction of motion, that is extended downstream of said work area,
• said upper abutment elements divided transversely with respect to said longitudinal direction of motion into at least two transverse sectors, said at least one containment element being arranged between said at least two transverse sectors.