Manufacturing container or tube from paper; or other manufacturi – With cutting – breaking – tearing – or abrading – Making plural – separate cuts by distinct cutting edges
Patent
1989-10-06
1991-05-21
Terrell, William E.
Manufacturing container or tube from paper; or other manufacturi
With cutting, breaking, tearing, or abrading
Making plural, separate cuts by distinct cutting edges
493471, 493475, 83343, 83674, 83699, B65H 3508, B26D 162, B26D 726
Patent
active
050171844
ABSTRACT:
An improved cut length adjusting apparatus in a folding machine of a rotary press is disclosed. The folding machine generally includes only a cutting drum having two knife blades disposed along its circumference nearly at equal angular intervals, and a folding drum rotating synchronously with but in the opposite direction to the cutting drum. The knife drum is formed of an outer cylinder and an inner cylinder which are mutually rotatable and which each have one knife blade respectively projecting therefrom. The improvements reside in that a helical gear adapted to mesh with another helical gear at the axial end of the folding drum is provided at the axial end of at least one of the outer and inner cylinders, and either one of the helical gear at the axial end of the outer or inner cylinders and the helical gear at the axial end of the folding drum is movable in the axial direction. Owing to the improved structure, by moving either one of the above-mentioned helical gears in the axial direction, the outer cylinder and the inner cylinder are relatively rotated, and so, the circumferential distance between the two saw blades is varied. Thus the cut length of a sheet to be cut by these saw blades can be precisely set.
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Hirahara Hidehumi
Takahori Mutsuo
Mitsubishi Jukogyo Kabushiki Kaisha
Terrell William E.
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