US3918874A
Expired / Lapsed
US
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Apparatus for multi-orifice extrusion
Assignee: OI Glass Inc
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Filing: 1974-03-04
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Granted: 1975-11-11
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Expires: 1994-03-04
Abstract
Abstract An apparatus for the simultaneous extrusion of a plurality of tubular parisons, each extruded through annular, variably dimensionable extrusion orifices aligned in a single plane and receiving plasticized material from a melt system, with the walls of each tubular parison being identically varied by simultaneous and identical variations of each annular orifice dimension. Each orifice is defined by relatively axially displaceable mandrel and bushing elements. A beam elongated in the single plane of the extrusion orifices and outside of the melt system supports the displaceable element of each orifice and is restrained for axial movement in the orifice plane by the displaceable orificedefining elements. Axially reciprocating the beam toward and away from the orifices varies the dimension of each extrusion orifice simultaneously and identically.
Inventors
- 👤 Ambrose B Dybala
- 👤 David Jesiolowski
- 👤 Casimir W Nowicki
- 👤 Thomas A Shapler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:47
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/50; B29C48/695; B29C48/03; B29C48/09; B29C48/30; B29C48/32; B29C48/325; B29C48/335; B29C48/10; B29C48/345
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
105 words
An extrusion apparatus comprising a plurality of annular extrusion orifices aligned in a single plane and receiving plasticized material from a melt system, each orifice being defined by relatively axially displaceable mandrel and bushing elements, means for simultaneously and identically varying the dimension of each orifice by axially displacing said orificedefining elements, said means including a laterally movable beam elongated in said single plane and outside said melt system, said beam supporting the displaceable element of each orifice, and actuating means for laterally moving the beam axially of said orifice, the entire beam being restrained for equidistant planar lateral movement by said displaceable orifice-defining elements.
Claim 2
Dependent Claim
105 words
An extrusion apparatus comprising a plurality of annular extrusion orifices aligned in a single plane and receiving plasticized material from a melt system, each orifice being defined by relatively axially displaceable mandrel and bushing elements, means for simultaneously and identically varying the dimension of each orifice by axially displacing said orificedefining elements, said means including a laterally movable beam elongated in said single plane and outside said melt system, said beam supporting the displaceable element of each orifice, and actuating means for laterally moving the beam axially of said orifice, the entire beam being restrained for equidistant planar lateral movement by said displaceable orifice-defining elements.
Claim 3
Dependent Claim
17 words
The invention as defined in claim 1 wherein the displaceable element of each orifice is the mandrel.
Claim 4
Dependent Claim
31 words
The invention as defined in claim 1 wherein the displaceable element of each orifice is rigidlY fastened within a clamp, said clamp and said beam secured together against relative axial movement.
Claim 5
Dependent Claim
21 words
The invention as defined in claim 3 wherein the displaceable element of each orifice and the clamp are relatively axially adjustable.
Claim 6
Dependent Claim
29 words
The invention as defined in claim 1, wherein said actuating means includes an hydraulic cylinder directly coupled to said beam for laterally moving the beam axially of said orifice.
Claim 7
Dependent Claim
34 words
The invention as defined in claim 1, wherein said actuating means includes an hydraulic cylinder and a cam and roller for translating movement of said cylinder into lateral beam movement axially of said orifice.
Claim 8
Dependent Claim
163 words
In an extrusion machine having a plurality of annular, spaced-apart extrusion orifices aligned in a single plane and receiving plasticized material from a melt system, each orifice being defined by relatively axially displaceable bushing and mandrel elements with said bushing element surrounding one end of the mandrel element; the improvement of means for simultaneously and identically displacing said orifice-defining elements to simultaneously and identically vary the dimension of each orifice; said displacing means including an elongated cylindrical sleeve telescopically receiving said mandrel and restraining axially spaced portions of said mandrel against radial movement, a laterally movable beam elongated in said single plane and outside said melt system, means rigidly securing said beam to the displaceable element of each orifice, actuating means for laterally reciprocating said beam relative to said orifices to identically axially displace the displaceable element of each orifice to identically vary each orifice dimension, the entire beam being guided for equilateral reciprocation in said single plane by said displaceable orifice-defining elements.
Claim 9
Dependent Claim
163 words
In an extrusion machine having a plurality of annular, spaced-apart extrusion orifices aligned in a single plane and receiving plasticized material from a melt system, each orifice being defined by relatively axially displaceable bushing and mandrel elements with said bushing element surrounding one end of the mandrel element; the improvement of means for simultaneously and identically displacing said orifice-defining elements to simultaneously and identically vary the dimension of each orifice; said displacing means including an elongated cylindrical sleeve telescopically receiving said mandrel and restraining axially spaced portions of said mandrel against radial movement, a laterally movable beam elongated in said single plane and outside said melt system, means rigidly securing said beam to the displaceable element of each orifice, actuating means for laterally reciprocating said beam relative to said orifices to identically axially displace the displaceable element of each orifice to identically vary each orifice dimension, the entire beam being guided for equilateral reciprocation in said single plane by said displaceable orifice-defining elements.
Claim 10
Dependent Claim
30 words
The invention as defined in claim 7 wherein each displaceable orifice-defining element is rigidly fastened within a restraining member, said restraining member and beam clamped together against relative axial movement.
Claim 11
Dependent Claim
16 words
The invention as defined in claim 7 wherein said restraining member is an internally threaded bushing.
Claim 12
Dependent Claim
16 words
The invention as defined in claim 7 wherein said restraining member is a flanged adjusting nut.
Claim 13
Dependent Claim
24 words
The invention as defined in claim 7 wherein said actuating means includes an hydraulic cylinder for laterally reciprocating said beam relative to said orifices.
Claim 14
Dependent Claim
50 words
The invention as defined in claim 11 wherein said actuating means further includes a cam shaft reciprocated by said cylinder and having opposed parallel cam surfaces, and a pair of roller followers, each contacting and following one of said cam surfaces, for laterally reciprocating said beam relative to said orifices.
Claim 15
Dependent Claim
166 words
In a multiple orifice machine for simultaneously extruding identical hollow tubular parisons through a plurality of bores in a first plane and through orifices associated with a first end of each bore, each orifice being defined between relatively displaceable mandrel and bushing members with each mandrel member telescopically received by a bore and secured against lateral movement relative to said bore by sleeve means, each bore receiving a flow of plasticized material at a second bore end, the improvement of a control means for synchronizing the relative displacement of the orifice-defining members of each orifice, said control means including a beam positioned exteriorly of the flow of plasticized material and elongated in said first plane, said beam supporting the displaceable member of each orifice, and actuator means for laterally moving said beam axially of said orifices to telescopically displace the orifice defining member, the beam being restrained for lateral reciprocal movement parallel to its longitudinal axis by said displaceable orifice-defining memebers and by said sleeve means.
Claim 16
Dependent Claim
166 words
In a multiple orifice machine for simultaneously extruding identical hollow tubular parisons through a plurality of bores in a first plane and through orifices associated with a first end of each bore, each orifice being defined between relatively displaceable mandrel and bushing members with each mandrel member telescopically received by a bore and secured against lateral movement relative to said bore by sleeve means, each bore receiving a flow of plasticized material at a second bore end, the improvement of a control means for synchronizing the relative displacement of the orifice-defining members of each orifice, said control means including a beam positioned exteriorly of the flow of plasticized material and elongated in said first plane, said beam supporting the displaceable member of each orifice, and actuator means for laterally moving said beam axially of said orifices to telescopically displace the orifice defining member, the beam being restrained for lateral reciprocal movement parallel to its longitudinal axis by said displaceable orifice-defining memebers and by said sleeve means.
Claim 17
Dependent Claim
69 words
The invention as defined in claim 13, wherein said sleeve means includes a hollow elongated sleeve having a narrow first end to securely retain a firsT axial portion of said mandrel member and a bushing snugly receiving a second axial portion of said mandrel member at the second end of said sleeve, said second end of said sleeve being restrained against axial and radial movement relative to said beam.
Claim 18
Dependent Claim
38 words
The invention as defined in claim 13 wherein one end of each displaceable orifice-defining member is threaded into a bushing attached to said beam, said bushing and beam secured together against relative axial movement by a flanged bracket.
Claim 19
Dependent Claim
62 words
The invention as defined in claim 13 wherein said actuator means includes a pair of lifting means each coupled to opposite ends of said beam, respectively, each of said lifting means including a laterally reciprocable shaft having parallel opposed cam surfaces and a roller follower contacting each cam surface for translating the lateral shaft reciprocation into beam movement axially of said orifices.
Claim 20
Dependent Claim
44 words
The invention as defined in claim 13 wherein said actuator means includes lifting means and a torsion shaft spaced apart from said beam and coupled to opposite ends thereof for uniformly transmitting the force of said lifting means to both ends of said beam.
Claim 21
Dependent Claim
39 words
The invention as defined in claim 17 wherein said torsion shaft has a radial arm mounted on opposite ends thereof to rotate therewith, each radial arm terminating in a ball entrapped within a socket operatively coupled to said beam.
Claim 22
Dependent Claim
181 words
Apparatus for simultaneously extruding a plurality of tubular parisons having identically non-uniform wall thickness comprising: orifice block means having a plurality of elongated bores therein aligned in a single plane and receiving plasticized material at one end of said bores from a melt system, a plurality of mandrels each secured within a sleeve means, each sleeve means telescopically mounted in a bore, and a plurality of orifice bushings each associated with a mandrel to define an orifice therebetween, each orifice being variably dimensioned by axial displacement of a mandrel relative to its orifice bushing; means external to said bores and said melt system for simultaneously and identically displacing each mandrel axially with respect to its corresponding orifice bushing to vary each orifice dimension simultaneously and identically, said displacing means including a beam elongated in said single plane spaced apart from said orifice block means, said beam being restrained and supported by each relatively displaceable mandrel for planar lateral displacement parallel to the axes of said elongated bores; and an actuator for axially relatively moving said beam and said orifice block means.
Claim 23
Dependent Claim
181 words
Apparatus for simultaneously extruding a plurality of tubular parisons having identically non-uniform wall thickness comprising: orifice block means having a plurality of elongated bores therein aligned in a single plane and receiving plasticized material at one end of said bores from a melt system, a plurality of mandrels each secured within a sleeve means, each sleeve means telescopically mounted in a bore, and a plurality of orifice bushings each associated with a mandrel to define an orifice therebetween, each orifice being variably dimensioned by axial displacement of a mandrel relative to its orifice bushing; means external to said bores and said melt system for simultaneously and identically displacing each mandrel axially with respect to its corresponding orifice bushing to vary each orifice dimension simultaneously and identically, said displacing means including a beam elongated in said single plane spaced apart from said orifice block means, said beam being restrained and supported by each relatively displaceable mandrel for planar lateral displacement parallel to the axes of said elongated bores; and an actuator for axially relatively moving said beam and said orifice block means.
Claim 24
Dependent Claim
18 words
The apparatus as in claim 19 wherein said actuator moves said beam relative to said orifice block means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |