Rotary Cutting Die Apparatus for Cutting Corrugated Board Including Retainers for Maintaining Trim Strippers Closely Adjacent Trim Cutting Blades
First Claim
1. A rotary cutting die adapted to be mounted on a rotary die cylinder for cutting corrugated board fed between the cutting die and an anvil disposed adjacent the cutting die and rotary die cylinder, the rotary cutting die comprising:
- a. a die board configured to fit on the rotary die cylinder;
b. a trim cutting blade mounted on the die board for cutting an outside trim piece from a sheet of corrugated board to yield a product board;
c. the trim cutting blade having an outboard side and an inboard side;
d. an elastomer trim transfer device secured to the die board adjacent the outboard side of the trim cutting blade for engaging a cut trim piece and separating the cut trim piece from the product board;
e. the elastomer trim transfer device having an outboard side and an inboard side and wherein the elastomer trim transfer device is secured to the die board directly adjacent the trim cutting blade such that the inboard side of the elastomer trim transfer device faces the outboard side of the trim cutting blade;
f. a retainer for engaging the elastomer trim transfer device and causing the elastomer trim transfer device to be held closely adjacent the outboard side of the trim cutting blade so as to generally prevent the cut trim piece from being wedged between the outboard side of the trim cutting blade and the inboard side of the elastomer trim transfer device;
g. the retainer being mounted on the die board such that the retainer confines the elastomer trim transfer device between the retainer and the outboard side of the trim cutting blade; and
h. wherein the elastomer trim transfer device is movable back and forth within a space defined between the retainer and the trim cutting blade.
1 Assignment
0 Petitions
Accused Products
Abstract
A rotary cutting die assembly is provided that includes a die cylinder, an anvil, and a die board mounted to the die cylinder. The die board includes a series of trim cutting blades. Disposed on the outside of each trim cutting blade is a trim stripper. Secured to the die board adjacent the outside of the trim strippers is a series of retainers that generally retain the trim strippers between trip cutting blades and the retainers. This generally prevents cut pieces of trim from being packed and wedged into a gap between the trim cutting blades and the trim strippers.
-
Citations
18 Claims
-
1. A rotary cutting die adapted to be mounted on a rotary die cylinder for cutting corrugated board fed between the cutting die and an anvil disposed adjacent the cutting die and rotary die cylinder, the rotary cutting die comprising:
-
a. a die board configured to fit on the rotary die cylinder; b. a trim cutting blade mounted on the die board for cutting an outside trim piece from a sheet of corrugated board to yield a product board; c. the trim cutting blade having an outboard side and an inboard side; d. an elastomer trim transfer device secured to the die board adjacent the outboard side of the trim cutting blade for engaging a cut trim piece and separating the cut trim piece from the product board; e. the elastomer trim transfer device having an outboard side and an inboard side and wherein the elastomer trim transfer device is secured to the die board directly adjacent the trim cutting blade such that the inboard side of the elastomer trim transfer device faces the outboard side of the trim cutting blade; f. a retainer for engaging the elastomer trim transfer device and causing the elastomer trim transfer device to be held closely adjacent the outboard side of the trim cutting blade so as to generally prevent the cut trim piece from being wedged between the outboard side of the trim cutting blade and the inboard side of the elastomer trim transfer device; g. the retainer being mounted on the die board such that the retainer confines the elastomer trim transfer device between the retainer and the outboard side of the trim cutting blade; and h. wherein the elastomer trim transfer device is movable back and forth within a space defined between the retainer and the trim cutting blade. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method of manufacturing a rotary cutting die adapted to be mounted on a rotary die cylinder for cutting corrugated board fed between the cutting die and an anvil disposed adjacent the cutting die and rotary die cylinder, the method comprising:
-
a. configuring a die board to fit on the rotary die cylinder; b. mounting a trim cutting blade, having an outboard side and an inboard side, on the die board for cutting an outside trim piece from a sheet of corrugated board to yield a product board; c. securing an elastomer trim transfer device to the die board adjacent the outside of the trim cutting blade for engaging a cut trim piece and separating the cut trim piece from the product board; d. the elastomer trim transfer device having an outboard side and an inboard side and wherein the method includes securing the elastomer trim transfer device to the die board directly adjacent the trim cutting blade such that the inboard side of the elastomer trim transfer device faces the outboard side of the trim cutting blade; e. providing a retainer for engaging the elastomer trim transfer device and causing the elastomer trim transfer device to be held closely adjacent the outboard side of the trim cutting blade so as to generally prevent the cut trim piece from being wedged between the outboard side of the trim cutting blade and the inboard side of the elastomer trim transfer device; and f. mounting the retainer on the die board such that the retainer confines the elastomer trim transfer device between the retainer and the outboard side of the trim cutting blade; and g. wherein the retainer and trim cutting blade is mounted such that the elastomer trim transfer device is movable back and forth within a space defined between the retainer and the elastomer trim transfer device. - View Dependent Claims (12, 13)
-
-
14. A rotary cutting die adapted to be mounted on a rotary die cylinder for cutting corrugated board fed between the cutting die and an anvil disposed adjacent the cutting die and rotary die cylinder, the rotary cutting die comprising:
-
a. a die board configured to fit on the rotary die cylinder; b. a trim cutting blade mounted on the die board for cutting an outside trim piece from a sheet of corrugated board; c. the trim cutting blade having an outboard side and an inboard side; d. an elastomer trim transfer device secured to the die board adjacent the outboard side of the trim cutting blade for engaging the trim piece and transferring the trim piece away from the trim cutting blade; e. the elastomer trim transfer device having an outboard side and an inboard side and wherein the elastomer trim transfer device is secured to the die board directly adjacent the trim cutting blade such that the inboard side of the elastomer trim transfer device faces and engages the outboard side of the trim cutting blade; f. a preloading device mounted on a leading area of the die board for engaging the anvil on each revolution of the rotary die cylinder and preloading the rotary die cylinder; and g. wherein the trim cutting blade is a leading trim cutting blade and is disposed transversely across the die board and wherein the preloading device is aligned with the trim cutting blade and disposed ahead of the trim cutting blade such that on each revolution of the rotary die cylinder, the preloading device engages the anvil and preloads the rotary die cylinder prior to the leading trim cutting blade loading the rotary die cylinder. - View Dependent Claims (15, 16, 17)
-
-
18. A rotary cutting die adapted to be mounted on a rotary die cylinder for cutting corrugated board fed between the cutting die and an anvil disposed adjacent the cutting die and rotary die cylinder, the rotary cutting die comprising:
-
a. a die board configured to fit on the rotary die cylinder; b. a trim cutting blade mounted on the die board for cutting an outside trim piece from a sheet of corrugated board to yield a product board; c. the trim cutting blade having an outboard side and an inboard side; d. a resilient trim transfer device disposed on the die board adjacent the outboard side of the trim cutting blade for engaging a cut trim piece and separating the cut trim piece from the product board; e. the resilient trim transfer device having an outboard side and an inboard side wherein the resilient trim transfer device is disposed on the die board directly adjacent the trim cutting blade such that the inboard side of the resilient trim transfer device faces the outboard side of the trim cutting blade; f. a retainer for engaging the resilient trim transfer device and causing the resilient trim transfer device to be held closely adjacent the outboard side of the trim cutting blade so as to generally prevent the cut trim piece from being wedged between the outboard side of the trim cutting blade and the inboard side of the resilient trim transfer device; g. the retainer being mounted on the die board such that the retainer confines the resilient trim transfer device between the retainer and the outboard side of the trim cutting blade; and h. wherein the resilient trim transfer device is movable back and forth within a space defined between the retainer and trim cutting blade.
-
Specification