Patent ID: 7469622
Filing Date: 2008-12-30
Classification: B26D,Y10T

Abstract:
1. A paper cutting machine for cutting a plurality of sheets of paper stacked one upon another on a table, including a main body frame having a pair of longitudinal beams extending in a vertical direction; a paper support that is movable up and down along the longitudinal beams between upper and lower limit positions, for supporting sheets of paper from above; and a cutter that is movable up and down in an oblique direction, and is movable up from below to cut the sheets of paper, the cutter blade having surfaces spaced from each other defining its thickness and having a cutting edge at an upper end thereof; said paper support including a rest arranged to move into contact with the uppermost sheet of paper and receive said cutting edge of the cutter blade, and a paper support frame meshing with the longitudinal beams and arranged for supporting the rest fitted to the lower surface thereof; said paper cutting machine comprising: a moving mechanism for allowing said rest to move by a predetermined pitch in a direction perpendicular to imaginary extensions of said surfaces of the cutter blade; and a controller for operating the moving mechanism whenever the number of strokes of the cutter blade reaches a predetermined number of strokes; wherein the rest is arranged to move by the predetermined pitch in the direction perpendicular to the imaginary extensions whenever the number of strokes of the cutter blade for cutting the sheets of paper reaches the predetermined number; and wherein said moving mechanism of the rest includes a solenoid fitted to the paper support frame, a rack interconnected with a rod constituted by a movable core of the solenoid, a one-way clutch gear meshing with the rack, a rest rack formed on the rest, wherein the rest is fitted to the lower surface of the paper support frame in such a manner as to be capable of sliding, and a pinion gear meshing with the rest rack and capable of rotation upon acquiring power of the one-way clutch gear.