US3600755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic injection-molding machine with variable sprue-height adjustment
Assignee: New Britain Machine Co
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Filing: 1969-05-15
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Granted: 1971-08-24
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Expires: 1989-05-15
Abstract
Abstract In a plastics injection-molding machine, the injector is reciprocatably slidable on a platform for engaging the injector nozzle with the sprue hole of a mold on the machine. One end of the platform is pivoted for jacked vertical movement of the other end, to adjust the vertical position of the injector nozzle. Such adjustment accommodates the injector nozzle to the elevation of the sprue hole, for successive molds having sprue holes at different heights. The portion of the nozzle engaging the sprue hole is generally spherical for making universally good contact therewith, throughout the range of adjustably available angular positions of the injector relative to the mold.
Inventors
- 👤 Francis W Cook Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:18
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/1781; B29C45/03; B29C45/07; B29C45/1773
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
156 words
In a plastics injection-molding machine, a horizontally elongated frame including means for supporting a mold having a circular sPrue hole at one side, injection means and a generally horizontally elongated support therefor carried by said frame, said injection means including means for accumulation of plasticized melt and a generally horizontally directed discharge nozzle facing the sprue hole side of the mold, elongated guide means coacting between said injection means and said support for generally horizontal reciprocating movement of said injection means, jack means coacting between said frame and said support for selective elevation of the discharge axis of said nozzle, and actuating means reacting between longitudinally spaced locations respectively on said frame and on said injection means for driven reciprocation of said injection means into and out of a sprue engaging position for said nozzle, said actuating means comprising a double-acting hydraulic actuator with articulating end connections to said frame and to said injection means, respectively.
Claim 2
Dependent Claim
156 words
In a plastics injection-molding machine, a horizontally elongated frame including means for supporting a mold having a circular sPrue hole at one side, injection means and a generally horizontally elongated support therefor carried by said frame, said injection means including means for accumulation of plasticized melt and a generally horizontally directed discharge nozzle facing the sprue hole side of the mold, elongated guide means coacting between said injection means and said support for generally horizontal reciprocating movement of said injection means, jack means coacting between said frame and said support for selective elevation of the discharge axis of said nozzle, and actuating means reacting between longitudinally spaced locations respectively on said frame and on said injection means for driven reciprocation of said injection means into and out of a sprue engaging position for said nozzle, said actuating means comprising a double-acting hydraulic actuator with articulating end connections to said frame and to said injection means, respectively.
Claim 3
Dependent Claim
37 words
The machine of claim 1, in which the operative axis of said hydraulic actuator and the articulating end connections thereof are on substantially the alignment and elevation of the axis of guided support of said injection means.
Claim 4
Dependent Claim
37 words
The machine of claim 2, wherein said support is pivoted to said frame at a location longitudinally remote from the injection nozzle and wherein said jack means is longitudinally intermediate such pivotal support and the nozzle location.
Claim 5
Dependent Claim
41 words
The machine of claim 3, wherein the connection of said actuator to said frame includes a removable pin, and selectively available vertically spaced coating pin-receiving means at the location of actuator-frame connection for selective elevation of the point of frame-actuator connection.
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) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |