Patent US3698272A successfully refreshed from Google Patents.
US3698272A
Expired / Lapsed
US
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Rotary air eject die-cutting assembly
Assignee: QUINCY TECHNOLOGIES Inc
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Filing: 1971-05-03
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Granted: 1972-10-17
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Expires: 1991-05-03
Abstract
Abstract A rotary air eject die-cutting assembly utilizes an air delivery manifold having a cylindrical core portion that is fabricated of a relatively resiliently deformable material and is closely seated within the cavity of a journaled die-cutting roll. The roll has a cutting element of closed configuration on its outside surface and an aperture that extends between the cutting element and the cavity. The core portion has an interior passageway and a generally radially extending port that is positioned for registry with the aperture of the roll, permitting air to flow through the passageway and the port, and out of the aperture, upon registry of the aperture and port. This occurs intermittently as the roll rotates about the core portion which is secured in a substantially fixed position, and enables pressurized air to eject scrap that would other wise tend to build up within the cutting element. Use of a resiliently deformable core portion eliminates the need for added support and bearing members within the roll cavity; it simplifies the assembly and enhances its useful life.
Inventors
- 👤 Martin Kesten
- 👤 Ralph Bruce O'connor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:37
CPC Classifications
B; B26; B26D; B26D7/00; B26D7/18; B26D7/1845; B26D7/1863; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2066; Y10T83/2068
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
327 words
A rotary air eject die-cutting assembly comprising: a diecutting roll adapted for journaling in a die cutting press and having a cylindrical cavity extending axially inwardly from one end thereof and cutting element of closed configuration on its outside surface with at least one aperture extending from said cavity to a location on said outside surface within the confines of said cutting element, said aperture enabling air flow between said cavity and said cutting element and comprising substantially the only outlet for air from said roll; an air delivery manifold having a core member with a self-supporting relatively resiliently deformable cylindrical portion inserted axially into said cavity of said roll from said one end thereof, for relative rotation therebetween, said core portion being substantially free of added support and bearing members within said roll cavity and being dimensioned and configured to seat therein with its outer surface in close proximity to the inside surface of said roll defining the corresponding portion of said cavity, said core portion having an axially extending passageway therein with an outlet comprising at least one generally radially extending port opening at a point on said outer surface thereof in a location for registry with said one aperture of said roll, said manifold having an inlet communicating with said passageway of said core portion and being substantially closed to the flow of air except through said inlet and outlet, and including coupling means adjacent said inlet for engagement with a source of pressurized air for delivery of air into said passageway; and a support member for said manifold adapted for mounting in a stationary position on the press and having means for securing said core portion in a substantially fixed position thereon, so that rotation of said roll on the press about said core portion causes intermittant registry of said one aperture and said one port, permitting air to flow from the source thereof outwardly through said one port in a radial direction.
Claim 2
Dependent Claim
327 words
A rotary air eject die-cutting assembly comprising: a diecutting roll adapted for journaling in a die cutting press and having a cylindrical cavity extending axially inwardly from one end thereof and cutting element of closed configuration on its outside surface with at least one aperture extending from said cavity to a location on said outside surface within the confines of said cutting element, said aperture enabling air flow between said cavity and said cutting element and comprising substantially the only outlet for air from said roll; an air delivery manifold having a core member with a self-supporting relatively resiliently deformable cylindrical portion inserted axially into said cavity of said roll from said one end thereof, for relative rotation therebetween, said core portion being substantially free of added support and bearing members within said roll cavity and being dimensioned and configured to seat therein with its outer surface in close proximity to the inside surface of said roll defining the corresponding portion of said cavity, said core portion having an axially extending passageway therein with an outlet comprising at least one generally radially extending port opening at a point on said outer surface thereof in a location for registry with said one aperture of said roll, said manifold having an inlet communicating with said passageway of said core portion and being substantially closed to the flow of air except through said inlet and outlet, and including coupling means adjacent said inlet for engagement with a source of pressurized air for delivery of air into said passageway; and a support member for said manifold adapted for mounting in a stationary position on the press and having means for securing said core portion in a substantially fixed position thereon, so that rotation of said roll on the press about said core portion causes intermittant registry of said one aperture and said one port, permitting air to flow from the source thereof outwardly through said one port in a radial direction.
Claim 3
Dependent Claim
27 words
The assembly of claim 1 wherein the material of said core portion also posses a relatively low coefficient of friction, affording to said core portion inherent lubricity.
Claim 4
Dependent Claim
53 words
ThE assembly of claim 2 wherein said core member is integrally formed of said material and has an enlargement adjacent said one end of said roll and outwardly thereof, said enlargement restraining axial movement of said roll in one direction and providing a thrust surface against which said one end thereof may abut.
Claim 5
Dependent Claim
16 words
The assembly of claim 2 wherein said material of said core portion comprises a fluoroplastic resin.
Claim 6
Dependent Claim
70 words
The assembly of claim 1 wherein said port of said core portion is elongated in a generally axial direction, so that the force of air acting against the longer edges defining said port tends to increase the separation between said edges and urge the adjacent outside surface of said core portion more tightly against the corresponding area of said inside surface of said roll to enhance the sealing action thereat.
Claim 7
Dependent Claim
73 words
The assembly of claim 5 wherein said roll has a second of said cutting elements on said outside surface thereof and said only outlet therefrom includes a second of said apertures so extending to a location therewithin, with said one and second apertures opening at generally circumferentially aligned points on said inside surface of said roll for sequential registry with said one port of said core portion during rotation of said roll thereabout.
Claim 8
Dependent Claim
104 words
The assembly of claim 5 wherein said roll has a second of said cutting elements on said outside surface thereof and said only outlet therefrom includes a second of said apertures so extending to a location therewithin, with said one and second apertures opening at axially spaced points on said inside surface of said roll, and wherein said outlet of said core portion includes at least a second of said ports said second port opening independently of said first port on said outer surface of said core portion at a point spaced axially therefrom, for intermittent registry with said second aperture of said roll.
Claim 9
Dependent Claim
90 words
The assembly of claim 7 wherein said one and second ports of said core portion open at points that are circumferentially displaced on said outer surface thereof within an arc of less than about 45*, and wherein said points of opening of said apertures are disposed on said inner surface of said roll at a circumferential displacement different from that of said points of opening of said ports, so that said one and second apertures register with said one and second ports at different times during rotation of said roll.
Claim 10
Dependent Claim
79 words
The assembly of claim 8 wherein said roll has at least an additional of said cutting elements and at least an additional of said apertures providing said only outlet therefrom and so extending to a location therewithin, said additional aperture opening at a point on said inside surface that is generally circumferentially aligned with said point of opening of said one aperture for sequential registry of said one and additional apertures with said one port of said core portion.
Claim 11
Dependent Claim
79 words
The assembly of claim 7 wherein said roll has at least an additional of said cutting elements and at least an additional of said apertures providing said only outlet therefrom and so extending to a location therewithin, said additional aperture opening at a point on said inside surface that is generally circumferentially aligned with said point of opening of said one aperture for sequential registry of said one and additional apertures with said one port of said core portion.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |