Patent ID: 7691044

Claim:
A creasing-folding machine for producing paper and bookbinding articles, comprising: feed means ( 2 ) for supplying sheets ( 3 ) and feeding said sheets ( 3 ) in a feed plane (P) along a feed path (A); a creasing unit ( 4 ); and a folding unit ( 5 ) in series with said creasing unit ( 4 ); said creasing unit ( 4 ) comprising two creasing assemblies ( 14 ) cascaded along the feed path (A); each of said creasing assemblies ( 14 ) including a creasing roller ( 15 ) and a pressure roller ( 16 ) having respective fixed axes (B, C) parallel to each other, crosswise to said feed path (A) of said sheets ( 3 ) and disposed on opposite sides of said feed plane (P), and a creasing blade ( 18 ) extending radially from a lateral surface of said creasing roller ( 15 ) and fixed thereto crosswise to said feed path (A) so as to move along a path substantially tangent to said feed path (A) of said sheets ( 3 ) upon rotation of said creasing roller ( 15 ), said creasing blade ( 18 ) and said pressure roller ( 16 ) of each of said creasing assemblies ( 14 ) being adapted to contact opposite faces of said sheets, said creasing assemblies ( 14 ) being inverted with respect to each other; said creasing rollers ( 15 ) being driven by brushless electric motors; each of said creasing assemblies ( 14 ) further comprising an intermediate support ( 30 ) cooperating with the respective creasing roller ( 15 ) in an intermediate position along said creasing roller ( 15 ) to limit bending under work loads; said creasing unit ( 4 ) being located upstream from said folding unit ( 5 ) to perform transverse creasing operations upstream from said folding unit ( 5 ).