Rotary anvil construction
AssigneeDayco Corporation
InventorsJacob A. Bollmer, Joseph E. Stearns, Alvin R. Brooks, Jr.
Life of this patent
Estimating the term…
Abstract
A rotary anvil construction, method of locking a die-cutting mat on such construction, and locking wedge for use with such construction and method are provided wherein the locking wedge is an immobile wedge and has locking surfaces which are adapted to have cooperating locking surfaces on flanges of a die-cutting mat of the rotary anvil construction snap-locked thereagainst.
Claims20
In a rotary anvil construction comprising;
- a rotary anvil having an outer substantially cylindrical surface and having a pair of spaced holding surfaces extending radially inwardly from said cylindrical surface and defining opposed walls of a longitudinal groove in said anvil;
- a die-cutting mat attached against said anvil and having opposite end portions terminating in a pair of identical locking flanges extending from said end portions and being received within said groove;
- and a wedge for locking said flanges against said holding surfaces;
- the improvement wherein said wedge is an immobile locking wedge disposed within said groove and having fixed locking surface on each side thereof, each locking surface being spaced from an associated one of said holding surfaces to define a flange-receiving channel therebetween, and each of said flanges has an inner portion adjoining said mat and an outer portion adapted to be yieldingly compressed within an associated channel, each other portion having a cooperating locking surface which is snap-locked against an associated locking surface of said wedge to lock its flange in position once the associated outer end portion is yieldingly compressed within its associated channel.
In a locking wedge for a rotary anvil construction comprising a rotary anvil having an outer substantially cylindrical surface and having a pair of spaced holding surfaces extending radially inwardly from said cylindrical surface and defining opposed walls of a longitudinal groove in said anvil;
- a die-cutting mat attached against said anvil and having opposed end portions terminating in a pair of identical locking flanges extending from said end portions and being received within said groove;
- said wedge locking said flanges against said holding surfaces;
- the improvement wherein said wedge is an immobile locking wedge disposed within said groove and having fixed locking surface on each side thereof, each locking surface being spaced from an associated one of said holding surfaces to define a flange-receiving channel therebetween, each of said flanges having an inner portion adjoining said mat and an outer portion adapted to be yieldingly compressed within an associated channel, each other portion having a cooperating locking surface which is adapted to be snap-locked against an associated locking surface of said wedge to lock its flange in position once the associated outer end portion is yieldingly compressed within its associated channel.
In a method of locking a die-cutting mat to a rotary anvil which has an outer substantially cylindrical surface and a pair of spaced holding surfaces extending radially inwardly from said cylindrical surface and defining opposed walls of a longitudinal groove in said anvil and wherein said die-cutting mat has opposite end portions terminating in identical locking flanges extending from said end portions and being received within said groove, the improvement comprising the steps of, fixing an immobile locking wedge within said groove, said locking wedge having a fixed locking surface on each side thereof and each locking surface being spaced from an associated one of said holding surfaces to define a flange-receiving channel therebetween, forming a cooperating locking surface on each of said flanges so that each of said flanges has an inner portion adjoining said mat and an outer portion adapted to be yieldingly compressed within an associated channel, and snap-locking each cooperating locking surface against an associated locking surface of said wedge by yieldingly compressing the associated terminal end portion of each flange within an associated channel.
Dependencies are inferred from the claim text.