Patent ID: 6582348
Filing Date: 2003-06-24
Classification: B31F,B65H

Abstract:
A machine for the creasing, perforation or circular cutting of a sheet material, the machine comprising:a support structure with a horizontal loading plane for accommodating at least one stack of starting sheets; a feeding plane with a proximal end adjacent to said loading plane and with a distal end, said feeding plane accommodating one sheet at a time taken from a bottom of the stack of sheets on said loading plane; an advancing suction roller for picking up and transferring every single sheet from said loading plane to said feeding plane; and a processing unit arranged at a remote end of said feeding plane and accommodating one sheet at a time for a creasing, perforation or cutting operation, said processing unit includes a pair of rollers fitting every single sheet, a pair of tool-holding shafts accommodating tools for operation and a pair of rollers for unloading each processed sheet; a male creasing tool with a circular grooving ring made of a synthetic material and arranged and fastened between two shoulders made of another synthetic material with two blocking ring nuts made of metal on sides of said shoulders is mourned on said tool-holding shaft and on the other said tool-holding shaft at least one female creasing tool associated with the male creasing tool and including two annular elements made of a material identical to that of said male grooving ring and fastened between two said shoulders made of a material identical to that of the shoulders of the said male creasing tool is mounted with blocking ring nuts made of metal on the sides of said shoulders.