US 5,701,789 A · Waste repellent die structure

Abstract

A cutting die system having an improved waste or scrap removal system is provided. Curved edge patterns are cut into the cutting die plate within the parameters of the cutting edge. These partial cutouts having curved edges are provided so that when the cutting die is mounted to the die cylinder, the bending of the cutting die to fit the curvature of the die cylinder causes the cut out shape to pop up. The direction of the pop-up cut out shape is complementary to the relative direction of rotation of the cutting die and the height of the projections remains below the cutting edge height. When the pop-up cut out shape comes in contact with the waste or scrap material, the waste or scrap material is pushed outward and away from the direction of the die cylinder.

Claims14

Dependent claims

A waste repellent system for use in removing scrap material from a cutting die, said system comprising:

a cylindrical die holder for rotation about an axis;
a flexible cutting die plate, said flexible cutting die plate comprising:
a substantially flexible sheet-like material having a sheet surface defined by leading, trailing and opposing side edges, a pattern surface having leading and side impression surfaces raised to a predetermined height above the sheet surface said impression surfaces defining an impression area for cutting a pattern into a web or blank, said impression area comprising a plurality of push pattern projections formed within and of said sheet like material at predetermined locations of said area, such that said pop-up push patterns are bendable into being coplanar with said sheet-like material and biased away from said impression surface for repelling scrap material from said cutting, die plate.

Dependencies are inferred from the claim text.

Waste repellent die structure

Life of this patent

Waste repellent die structure

Life of this patent

Abstract

Claims14