Insert and pin for pin ejector system for a rotary cutting die arrangement and associated methods

• US 10,239,222 B2
• Filed: 07/14/2016
• Issued: 03/26/2019
• Est. Priority Date: 07/14/2016
• Status: Active Grant

• Current Assignee: Roto-Die Company, Inc.
• Original Assignee: Roto-Die Company, Inc.
• Inventors: Schomber, Jr., Charles E., Burris, Jeffery Miles
• Primary Examiner(s): Alie, Ghassem
• Application Number:
  US15/209,893
• Publication Number:
  US 20180015628A1
• Time in Patent Office: 985 Days
• Field of Search: 83123, 83154, 83128, 83345, 83107, 83151, 83103, 83117, 493373, 493342, 493 82, 493 83, 493472, 493371, 493471
• CPC Class Codes: B26D 1/626 for thin material, e.g. for sheets, strips or the like
• CPC Class Codes: B26D 7/1818 by pushing out
• CPC Class Codes: B26F 1/384 using rotating drums

Abstract

An insert assembly is received in a recess on the outer surface of a rotary cutting cylinder. The insert has a hole for a slug ejector pin which is slidingly engagable with the insert. The hole is arranged on the insert to communicate with a through hole in the recess that extends into the interior of the cylinder. When the slug ejector pin is inserted in the pin hole, the pin proximal end is received in the recess hole adjacent to the compressible core and the pin distal end projects from an outer surface of the insert. When the pin is assembled with the insert and the insert is assembled with the cylinder, the pin proximal end operatively engages the compressible core when the pin retracts into the pin hole of the insert and the pin proximal end operatively engages the insert when the pin projects from the pin hole.

Claims

1. An insert assembly configured to be removably attached to an outer diameter surface of a cylinder of a rotary die cutting arrangement comprising a rotary die cutting cylinder and an anvil roll, the cylinder having a compressible core in an interior of the cylinder, the insert assembly comprising:

an insert configured to be received in a recess on the outer surface of the cylinder, the insert having a pin ejector pin hole arranged on the insert such that when the insert is received in the recess, the pin ejector pin hole communicates with a hole in the recess of the cylinder outer surface which cylinder recess hole extends into the interior of the cylinder; and

a pin having proximal and distal ends, the pin distal end configured to engage a media passing between the rotary die cutting cylinder and the anvil roll when the pin assembled with the insert and the cylinder, the pin being configured to be received in the pin ejector hole of the insert;

wherein when the pin is inserted in the pin ejector pin hole, the pin proximal end is configured to be received in the recess hole adjacent to the compressible core and the distal end projects from an outer surface of the insert;

wherein the pin is slidingly engagable with the insert in the pin ejector pin hole in a manner whereby when the pin is assembled with the insert and the insert is assembled with the cylinder, the pin proximal end operatively engages the compressible core when the pin retracts into the pin ejector pin hole of the insert and the pin proximal end operatively engages the insert when the pin projects from the pin ejector pin hole.

2. The insert assembly of claim 1 further comprising a die cut edge on the insert outer surface around the pin ejector pin hole.

3. The insert assembly of claim 1 further comprising a bushing configured to be received in the pin ejector pin hole.

4. The insert assembly of claim 3, wherein the pin ejector pin hole has an internal shoulder.

5. The insert assembly of claim 4, wherein the bushing is configured to be positioned between the shoulder and the compressible core when the insert is received in the recess.

6. The insert assembly of claim 3, wherein the pin is slidingly engagable with the insert in the pin ejector pin hole in a manner whereby when the pin is assembled with the insert and the insert is assembled with the cylinder, the pin proximal end engages the bushing when the pin projects out of the pin ejector pin hole.

7. The insert assembly of claim 1 further comprising a mechanical fastener configured to removably mount the insert assembly to the cylinder.

8. An insert assembly configured to be removably attached to an outer diameter surface of a cylinder of a rotary die cutting arrangement comprising a rotary die cutting cylinder and an anvil roll, the cylinder having a compressible core in an interior of the cylinder, the insert assembly comprising:

an insert configured to be received in a recess on the outer surface of the cylinder with a first side of the insert exposed from the recess and a second side of the insert facing the recess, the insert having a pin ejector pin hole with a first bore, the pin ejector pin hole being arranged on the insert such that when the insert is received in the recess, the pin ejector pin hole communicates with a hole in the recess of the outer surface of the cylinder which cylinder recess hole extends into the interior of the cylinder; and

a pin having proximal and distal ends, the pin distal end being configured to engage a media passing between the rotary die cutting cylinder and the anvil roll when the pin is assembled with the insert and the cylinder, the pin being configured to be received in the pin ejector hole of the insert and being dimensioned to slide within the pin ejector hole first bore,

wherein when the pin is inserted in the pin ejector pin hole, the pin proximal end is configured to be received in the recess hole adjacent to the compressible core and the distal end projects from an outer surface of the insert;

wherein when the pin is assembled with the insert, and the insert is assembled with the cylinder, the pin proximal end operatively engaging the compressible core when the pin retracts into the pin ejector pin hole of the insert and the pin proximal end operatively engages the insert when the pin projects from the pin ejector pin hole.

9. The insert assembly of claim 8, wherein the insert pin ejector pin hole has a second bore larger than the first bore, the second bore extends from the second side of the insert to a position intermediate of the first and the second sides of the insert.

10. The insert assembly of claim 9, further comprising a bushing configured to be received in the pin ejector pin hole second bore.

11. The insert assembly of claim 10, wherein the bushing is dimensioned to be received in the cylinder recess hole.

12. The insert assembly of claim 11, wherein the bushing is positionable in the second bore between the insert and compressible core when the insert is received in the recess.

13. The insert assembly of claim 11, wherein the pin proximal end engages the bushing when the pin is assembled with the insert and the insert is assembled with the cylinder and when the pin projects out of the pin ejector pin hole.

14. The insert assembly of claim 8 further comprising a mechanical fastener to removably mount the insert assembly to the cylinder.

15. The insert assembly of claim 10, wherein the bushing bore is dimensioned to have a loose sliding fit with the pin.