Patent US4444039A successfully refreshed from Google Patents.
US4444039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die forging press
Assignee: Kobe Steel Ltd
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Filing: 1982-04-26
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Granted: 1984-04-24
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Expires: 2002-04-26
Abstract
Abstract A die forging press which includes a press machine proper adapted to detachably mount a die set having an upper die and a lower die; an auxiliary station having a die opening mechanism for holding and moving the upper and lower dies of the die set toward and away from each other and a heater having a heating head retractably protrudable to a position between the upper and lower dies when opened by the die opening mechanism. A transfer mechanism for transferring a die set between the press machine and auxiliary station is provided.
Inventors
- 👤 Akira Asari
- 👤 Toshio Kurosaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:51
CPC Classifications
B; B21; B21J; B21J9/00; B21J9/02; B21J9/06; B21J9/08; B21J13/00; B21J13/08; B21J13/085; B21K; B21K29/00; Y; Y10; Y10S; Y10S100/00; Y10S100/918
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
377 words
A die forging press comprising: (a) a plurality of die sets each of which comprises an upper die and a lower die; (b) at least two bolster plates each of which is adapted to detachably mount one of said die sets; (c) a press machine adapted to detachably mount one of said bolster plates during forging operations; (d) a T-shaped bed having the end of the center portion thereof located adjacent to said press machine and the two ends of the legs of the T-shaped bed located at a distance from said press machine; (e) a die setting section located at the end of one of the legs of said T-shaped bed, said die setting section comprising apparatus for detachably mounting one of said die sets on one of said bolster plates; (f) a die preheating section located at the end of the other one of the legs of said T-shaped bed, said die preheating section comprising: (i) a plurality of guide posts; (ii) a punch holder comprising means for gripping the upper die in one of said die sets; (iii) means for moving said punch holder vertically on said guide posts while said punch holder grips the upper die in one of said die sets, whereby said upper die is spaced from the corresponding lower die; and (iv) means for preheating the opposing faces of said one of said die sets mounted on one of said guide posts and pivotable between a stand-by position in which it is spaced from said die sets and an operational position in which it is inserted between said upper and lower dies in position to preheat said die set; (g) a turntable located at the center of said T-shaped bed; (h) paired parallel rails laid in and between said press machine and said turntable, in and between said die setting section and said turntable, in and between said die preheating section and said turntable, and on said turntable; and (i) a plurality of wheels mounted on said bolster plates in position to engage with said paired parallel rails for transferring said bolster plates from said die setting section to said preheating section, from said preheating section to said press machine, and from said press machine to said die setting section.
Claim 2
Dependent Claim
377 words
A die forging press comprising: (a) a plurality of die sets each of which comprises an upper die and a lower die; (b) at least two bolster plates each of which is adapted to detachably mount one of said die sets; (c) a press machine adapted to detachably mount one of said bolster plates during forging operations; (d) a T-shaped bed having the end of the center portion thereof located adjacent to said press machine and the two ends of the legs of the T-shaped bed located at a distance from said press machine; (e) a die setting section located at the end of one of the legs of said T-shaped bed, said die setting section comprising apparatus for detachably mounting one of said die sets on one of said bolster plates; (f) a die preheating section located at the end of the other one of the legs of said T-shaped bed, said die preheating section comprising: (i) a plurality of guide posts; (ii) a punch holder comprising means for gripping the upper die in one of said die sets; (iii) means for moving said punch holder vertically on said guide posts while said punch holder grips the upper die in one of said die sets, whereby said upper die is spaced from the corresponding lower die; and (iv) means for preheating the opposing faces of said one of said die sets mounted on one of said guide posts and pivotable between a stand-by position in which it is spaced from said die sets and an operational position in which it is inserted between said upper and lower dies in position to preheat said die set; (g) a turntable located at the center of said T-shaped bed; (h) paired parallel rails laid in and between said press machine and said turntable, in and between said die setting section and said turntable, in and between said die preheating section and said turntable, and on said turntable; and (i) a plurality of wheels mounted on said bolster plates in position to engage with said paired parallel rails for transferring said bolster plates from said die setting section to said preheating section, from said preheating section to said press machine, and from said press machine to said die setting section.
Claim 3
Dependent Claim
94 words
A die forging press as recited in claim 1 wherein the section of said paired parallel rails in said press machine includes portions which are vertically movable such that, when one of said bolster plates is standing in said press machine on said section of said paired parallel rails, said section of said paired parallel rails can be moved downwardly until the bottom of said one of said bolster plates engages a supporting surface and the wheels on said one of said bolster plates no longer engage said section of said paired parallel rails.
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) | 1987-04-24 | 1987-10-24 | 1988-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-24 | 1991-10-24 | 1992-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-24 | 1995-10-24 | 1996-04-24 | $7700.00 | Window Closed / Lapsed |