Rotary die cutter
AssigneeMoore Business Forms, Inc.
InventorEmil D'Luhy
Life of this patent
Estimating the term…
Abstract
A rotary die cutter comprises a pair of plate and anvil cylinders rotatable about fixed and spaced axes for die cutting a web passing therebetween. A die cutting plate is secured along the periphery of the plate cylinder, and an anvil plate is secured along the periphery of the anvil cylinder. The clearance between plate and anvil cylinders is determined by the thickness of the anvil plate thereby providing an interference between plates for a clear-through die cut or a gap for die cutting less than each layer of a multi-layered material depending on the thickness of the anvil plate selected.
Claims6
A rotary die cutting apparatus, comprising a rotatably mounted plate cylinder having die cutting means thereon, said die cutting means comprising a die cutting pattern including cutting edges lying both parallel and transverse to the longitudinal axis of said plate cylinder, a rotatably mounted cooperating anvil cylinder spaced from said plate cylinder, contacting bearer plates on said cylinders for maintaining said cylinders a fixed distance apart during rotation of said cylinders about their respective longitudinal axes, an anvil plate of substantially uniform thickness removably secured along the periphery of said anvil cylinder and disposed adjacent said pattern, the clearance between said anvil plate and said die cutting means being determined by the thickness of said anvil plate, whereby an interference fit as well as a gap may be provided as said clearance depending on the thickness of said anvil plate for respectively effecting a clear-through die cut and a partial die cut of at least one web arranged for movement between said cylinders, and whereby any contact between said die cutting means and said anvil cylinder is avoided by means of said anvil plate.
Dependencies are inferred from the claim text.