Assembly for rotary die cutting utilizing a shaftless roll
AssigneePreston Engravers, Inc.
InventorMartin Kesten
Life of this patent
Estimating the term…
Abstract
Die-cutting roll assemblies are provided which utilize a shaftless die roll. In certain embodiments, stability in the press is provided by an assist adaptor which has flanged bearings that cooperatively support the die roll laterally and transversely. In other embodiments, the roll is supported in a frame that has removable centers, which permit the use of rolls of various lengths in the assembly.
Claims8
In a die-cutting press, a roll assembly comprising:
- a substantially solid shaftless die-cutting roll having at least one cutting element on its outer cylindrical surface, having a gear portion on one end thereof, and having means adjacent each of its opposite ends for rotating engagement of securing means therewith, said engagement means defining a recess extending axially inwardly from each of the opposite ends of said roll;
- and a highly rigid support member adapted for fixed mounting adjacent said roll and comprising a frame extending thereabout, said frame having securing means affixed therein for engagement with said engagement means of said roll, and comprising a pair of axially aligned, inwardly directed rods mounted in said frame adjacent said opposite ends of said roll, each of said rods having on its inner end bearing portion dimensioned and configured to engage within a corresponding one of said end recesses to thereby journal said roll within said frame and cooperatively provide stability in the press.
An adapter device for fixed mounting in a press for supporting a shaftless die-cutting roll having engagement means defining a recess extending axially inwardly from each of the opposite ends thereof, comprising a highly rigid frame dimensioned and configured to extend about the die-cutting roll, said frame having securing means comprised of a pair of axially aligned, inwardly directed rods mounted in said frame, each of said rods having on its inner end a bearing portion dimensioned and configured to engage within a corresponding one of the end recesses of the roll, to thereby journal the roll within said frame and cooperatively provide stability in the press.
Dependencies are inferred from the claim text.