Apparatus for cutting paper logs in a plurality of rolls

Apparatus for cutting paper logs in a plurality of rolls comprising at least one longitudinal input channel of said log and at least one output channel of said rolls, said channels defining circular housings for stably receiving said log and said rolls and being arranged in a succession among them and separated by a cutting device of said log in said rolls, being provided means for moving said log and said rolls along said channels, said channels comprising mobile walls for selectively varying the diameter of said circular housings between a maximum diameter and a minimum diameter for ensuring the stable reception of log and rolls of various dimensions, each one of said walls comprising an upper mobile gripping portion and a lower mobile supporting portion for said logs and rolls, said lower mobile supporting portion for said logs and rolls being connected through pins with a structure for supporting said apparatus on one side and with an intermediate portion of said upper mobile gripping portion on another side, said upper mobile gripping portion comprising a free upper end and a base end rotatably connected to a cursor movable within an inclined slot obtained in said structure between a first position that corresponds to said maximum diameter of said circular housings and a second position that corresponds to said minimum diameter of said circular housings, there being provided a mobile actuator for moving said walls, wherein said mobile actuator engages said upper mobile gripping portion at said base end.