US3982869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection molding apparatus with alternatively shuttled mold sections
Assignee: Individual
•
Filing: 1974-07-22
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Granted: 1976-09-28
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Expires: 1994-07-22
Abstract
Abstract A multiple mold assembly is disclosed for molding articles in an injection molding apparatus. The assembly includes two molding sections that are alternatively shuttled from positions wherein one of the molding sections is in position for a molding operation, and the other molding section is in position for loading of inserts, performing preparatory or finishing operations, or removal of molded articles, to the reverse positions. The shuttle assembly of this invention is particularly adapted for use in a horizontal injection molding apparatus and for insert molding.
Inventors
- 👤 James W. Eggers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:20
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/03; B29C45/04; B29C45/0408; B29C45/0416
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
206 words
A shuttle mold assembly for a horizontal injection molding apparatus including a fixed and movable platen, comprising: means on the shuttle assembly for mounting said assembly between said fixed and movable platens; a first shuttle mold mounted for movement on said assembly and including at least one molding cavity; a second shuttle mold mounted for movement on said assembly and including at least one molding cavity; and means connected to the molds for alternatively moving said first and second shuttle molds between a position on said assembly where one of said molds is between said fixed and movable platens for a molding operation and the other of said molds is to the side of said fixed and movable platen and said one of said molds so that loading or unloading operations may be performed on said other of said molds during said molding operation, and a position where said other of said molds is between said fixed and movable platens for another molding operation and said one of said molds is to the side of said fixed and movable platens and said other of said molds so that loading or unloading operations may be performed on said one of said molds during said another molding operation.
Claim 2
Dependent Claim
206 words
A shuttle mold assembly for a horizontal injection molding apparatus including a fixed and movable platen, comprising: means on the shuttle assembly for mounting said assembly between said fixed and movable platens; a first shuttle mold mounted for movement on said assembly and including at least one molding cavity; a second shuttle mold mounted for movement on said assembly and including at least one molding cavity; and means connected to the molds for alternatively moving said first and second shuttle molds between a position on said assembly where one of said molds is between said fixed and movable platens for a molding operation and the other of said molds is to the side of said fixed and movable platen and said one of said molds so that loading or unloading operations may be performed on said other of said molds during said molding operation, and a position where said other of said molds is between said fixed and movable platens for another molding operation and said one of said molds is to the side of said fixed and movable platens and said other of said molds so that loading or unloading operations may be performed on said one of said molds during said another molding operation.
Claim 3
Dependent Claim
45 words
The assembly of claim 1 further including means for moving said first and second shuttle molds in the direction of movement of said movable platen whereby each of said shuttle molds may be positioned substantially the same distance in said direction from said fixed platen.
Claim 4
Dependent Claim
78 words
The assembly of claim 1 wherein said last mentioned means provides for movement of said first and second shuttle molds along axes substantially perpendicular to the axis of movement of said movable platen, and further including means associated with the molds for moving said first and second shuttle molds in the direction of movement of said movable platen whereby each of said shuttle molds may be positioned substantially the same distance in said direction from said fixed platen.
Claim 5
Dependent Claim
65 words
The assembly of claim 1 wherein said first mentioned means is an elongated frame member including end flanges and spaced, parallel pairs of shafts between said end flanges, and wherein each of said molding sections is mounted to move along a pair of said shafts between said positions, and further including means for laterally shifting the position of said shafts with respect to said frame.
Claim 6
Dependent Claim
33 words
The assembly of claim 1 wherein said means for alternatively moving said first and second shuttle molds includes first and second double acting hydraulic cylinders each connected to one of said shuttle molds.
Claim 7
Dependent Claim
66 words
The assembly of claim 2 wherein said means for alternatively moving said first and second shuttle molds includes first and second double acting hydraulic cylinders each connected to one of said shuttle molds, and wherein said means for moving said first and second shuttle molds in the direction of movement of said movable platen includes at least one double acting hydraulic cylinder connected to said assembly.
Claim 8
Dependent Claim
45 words
The assembly of claim 1 further including means for moving said first and second shuttle molds in the direction of movement of said movable platens whereby each of said shuttle molds may be positioned substantially the same distance in said direction from said fixed platen.
Claim 9
Dependent Claim
34 words
The mold assembly of claim 1 wherein the position of each mold to the side of the other is on the same side of said molding assembly away from said movable and fixed platens.
Claim 10
Dependent Claim
53 words
The mold assembly of claim 8 wherein said means for alternatively moving said first and second shuttle molds are hydraulic cylinders each mounted on said assembly on the opposite side from said fixed and movable platens from the side to which said molds are moved when not between said fixed and movable platens.
Claim 11
Dependent Claim
34 words
The mold assembly of claim 2 wherein the positions of each mold to the side of the other is on the same side of said molding assembly away from said movable and fixed platens.
Claim 12
Dependent Claim
53 words
The mold assembly of claim 10 wherein said means for alternatively moving said first and second shuttle molds are hydraulic cylinders each mounted on said assembly on the opposite side from said fixed and movable platens from the side to which said molds are moved when not between said fixed and movable platens.
Claim 13
Dependent Claim
190 words
In an injection molding apparatus including a fixed platen, a movable platen, and means for moving the movable platen towards and away from said fixed platen, the improvement comprising a shuttle molding assembly mounted between said fixed and movable platens, said molding assembly including: a first mold mounted for movement on said shuttle assembly and at least one cavity therein that cooperates with one of the platens to define a mold cavity; a second mold mounted for movement on said shuttle assembly and including at least one mold cavity therein that cooperates with one of the platens to define a mold cavity; means attached to the molds for moving each of said molds movable along said shuttle assembly along axes substantially perpendicular to the axis of movement of said movable platen; and said shuttle assembly including means for moving each of said molds along an axis substantially parallel to the axis of movement of said movable platen, whereby said molds can be alternatively placed between said platens so that while molding operations are preformed with one mold, loading and unloading operations may be performed on the other of said molds.
Claim 14
Dependent Claim
190 words
In an injection molding apparatus including a fixed platen, a movable platen, and means for moving the movable platen towards and away from said fixed platen, the improvement comprising a shuttle molding assembly mounted between said fixed and movable platens, said molding assembly including: a first mold mounted for movement on said shuttle assembly and at least one cavity therein that cooperates with one of the platens to define a mold cavity; a second mold mounted for movement on said shuttle assembly and including at least one mold cavity therein that cooperates with one of the platens to define a mold cavity; means attached to the molds for moving each of said molds movable along said shuttle assembly along axes substantially perpendicular to the axis of movement of said movable platen; and said shuttle assembly including means for moving each of said molds along an axis substantially parallel to the axis of movement of said movable platen, whereby said molds can be alternatively placed between said platens so that while molding operations are preformed with one mold, loading and unloading operations may be performed on the other of said molds.
Claim 15
Dependent Claim
44 words
The molding apparatus of claim 12 wherein said injection molding apparatus is horizontally disposed with the movable and fixed platens lying in a vertical plane, and wherein said shuttle molds are movable in a vertical plane to and from a position between said platens.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-28 | 1980-03-29 | 1980-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-28 | 1984-03-29 | 1984-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-28 | 1988-03-29 | 1988-09-28 | $7700.00 | Window Closed / Lapsed |