Rotary cutting die

Details Rotary cutting die Rotary cutting die

1975-02-06

1977-05-03

Schran, Donald R.

Cutting

Cutting motion of tool has component in direction of moving...

Orbital motion of cutting blade

83674, 93 582R, 93 584, 83699, B26D 112, B31B 116

Patent

active

040207242

ABSTRACT:
A rotary cutting die is adapted to be mounted on a rotatable cylindrical die drum of a rotary press to cut a planar object passed between such rotating die drum and a cooperative oppositely-rotating anvil drum of said press. The rotary die includes: a die board having a concave surface adapted to cover a portion of the die drum, an opposite convex surface, and a plurality of openings therethrough; a plurality of fasteners adapted to selectively hold the die board to the die drum; a plate-like knife member adapted to be mounted on the die board at any of a plurality of large incremental positions in a longitudinal direction; and holding means mounted on the die board and selectively operable to hold the knife member at any selected one of the large incremental positions. In one embodiment, the die board openings are longitudinally-elongated to permit the die board to be shifted longitudinally relative to the die drum. In another embodiment, the die board openings are circumferentially-elongated and uniquely spaced from one another in a longitudinal direction such that some of the die board openings will register with some of the die drum holes at any of a plurality of discrete positions in a longitudinal direction. In this embodiment, compound movement of the die board and the knife member enables the knife edge to be selectively positioned along the die drum at any of a plurality of small incremental positions.

REFERENCES:
patent: 2863337 (1958-12-01), Ackley
patent: 3479931 (1969-11-01), Bishop
patent: 3752042 (1973-08-01), Castlle
patent: 3857314 (1974-12-01), Gregoire

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