Ejector configuration and method and apparatus for mounting the same

• US 6,644,153 B1
• Filed: 08/23/2000
• Issued: 11/11/2003
• Est. Priority Date: 02/02/2000
• Status: Active Grant

• Current Assignee: Jonco Die Company, Inc.
• Original Assignee: Jonco Die Company, Inc.
• Inventors: Gordon, Kevin T.
• Primary Examiner(s): Choi, Stephen
• Application Number:
  US09/644,412
• Time in Patent Office: 1,175 Days
• Field of Search: 83/27, 831/39, 831/23, 831/28, 831/17, 831/16, 831/15, 831/18, 831/13, 836/53, 831/03, 831/38, 493/60, 493/64, 493/82, 493/83, 493/342, 493/373, 493/472
• US Class Current: 83/27
• CPC Class Codes: B26D 7/1818 by pushing out
• CPC Class Codes: Y10T 83/0467 By separating products from each other
• CPC Class Codes: Y10T 83/2107 For radial movement of product
• CPC Class Codes: Y10T 83/2133 By resiliently biased ejector
• CPC Class Codes: Y10T 83/2157 Elastomeric stripper contacting product

Abstract

A method and apparatus for mounting an ejector to a die board including an ejector retaining recess in the die board and a portion of the ejector retained in such base without glue.

Claims

1. A rotary cutting die comprising:

an anvil roller;

a die roller, said anvil roller and said die roller being spaced from one another to define a nip therebetween;

a die board mounted to said die roller and having an outer surface and an inner surface;

a cutting rule mounted to said die board;

an ejector mounted to said die board independently and separately from said cutting rule;

an ejector mounting means comprising a retaining recess in said die board, said retaining recess including an opening in said outer surface, an inner end and a recess shoulder portion positioned between said opening and said inner end;

said ejector being constructed solely of a resilient and compressible material and comprising a mounting end including a protruding shoulder portion positioned in said retaining recess for retaining engagement with said recess shoulder portion, a neck portion extending through said opening and an ejector portion including a free end extending outwardly from said outer surface.

2. The cutting die of claim 1 wherein said die roller rotates in a first direction.

3. The cutting die of claim 2 wherein said opening being spaced from said cutting rule.

4. The cutting die of claim 1 wherein said ejector extends from said opening in said outer surface and toward said cutting rule in a direction substantially parallel to said first direction so that said free end is positioned between said opening and said cutting rule.

5. The cutting die of claim 1 wherein said ejector is retained relative to said die board without glue.

6. The cutting die of claim 1 wherein said free end is opposite to said mounting end and said ejector includes an intermediate portion between said mounting end and said free end.

7. The new cutting die of claim 6 wherein said intermediate portion extends from said neck portion at an angle less than 180°

.

8. The cutting die of claim 6 wherein said opening includes an opening dimension measured in a direction parallel to said first direction and wherein said intermediate portion has a dimension measured in a direction parallel to said first direction which is greater than said opening dimension.

9. The cutting die of claim 1 wherein said anvil roller and said die roller are substantially cylindrical.

10. The cutting die of claim 1 wherein said ejector is a single-piece structure.

11. The cutting die of claim 10 wherein said ejector is constructed of the same material throughout.

12. A method of mounting an ejector to a cutting die comprising:

providing a die board with a cutting rule mounted thereto and with an outer surface and a retaining recess, said retaining recess comprising an opening in said outer surface and a recess shoulder portion;

providing an ejector constructed solely of a resilient and compressible material and comprising a mounting end including a neck portion and a shoulder portion protruding from said neck portion and further including an ejector portion connected with said neck portion; and

mounting said ejector to said die board independently and separately from said cutting rule by inserting said mounting end into said retaining recess so that said neck portion extends through said opening, said protruding shoulder portion engages said recess shoulder portion and said ejector portion extends outwardly from said outer surface.

13. The method of claim 12 wherein said mounting end is inserted into said retaining recess through said opening.

14. The method of claim 12 including mounting an ejector to a die board without glue.

15. The method of claim 12 including providing a cutting die comprised of an anvil roller and a die roller wherein said die board is mounted to said die roller.

16. The method of claim 12 including inserting said mounting end into said retaining recess by compressing said shoulder portion and inserting said shoulder portion through said opening.

17. A cutting die comprising:

a die board having an outer surface and an inner surface;

a cutting rule mounted to said die board;

an ejector mounted to said die board independently and separately from said cutting rule;

an ejector mounting means for mounting said ejector to said die board independently and separately from said cutting rule, said mounting means including a retaining recess in said die board, said recess including an opening in said outer surface and a recess shoulder portion positioned between said outer and inner surfaces;

said ejector having a retaining base, said retaining base including a neck portion extending through said opening and a protruding shoulder portion connected with said neck portion for retaining engagement with said recess shoulder portion wherein said ejector includes a mounting end defined by said retaining base, a free end opposite to said mounting end and an intermediate portion between said mounting end and said free end, wherein said intermediate portion extends from said neck portion at an angle and wherein said intermediate portion includes a hump portion.