US3759649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple-section molding press
Assignee: Tyler Machinery Co Inc
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Filing: 1972-02-04
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Granted: 1973-09-18
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Expires: 1992-02-04
Abstract
Abstract A multiple-section molding press having molding press sections arranged in aligned vertical and horizontal rows. Each section has a fluid pressure-operated platen. A vertically movable horizontal elevator platform member is adapted to receive box molds from a conveyor, and the box molds can be moved along the platform member so as to be manually positioned adjacent any of the vertical rows of press sections. A bank of illuminated control switches is provided for the sections. The elevator platform is provided with pushers and ejection devices aligned with the respective vertical rows. Automatic vertical positioning circuits are provided for the platform member, as well as press cycling circuits, operating in response to the actuation of a selected illuminated control switch to place a mold box at the level corresponding to the selected illuminated switch. The associated pusher automatically moves the mold box into press position and simultaneously ejects a previously compressed mold box therefrom onto the discharge side of the platform so that it is engaged by the associated ejection device. The platform returns to conveyor level. A respective timer is provided to control the action of each of the press sections and to indicate completion of a press cycle.
Inventors
- 👤 C Tyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:09
CPC Classifications
B; B30; B30B; B30B1/00; B30B1/003; B30B7/00; B30B7/02
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
134 words
A multiple molding press assembly comprising upstanding frame means, a plurality of vertically spaced fixed horizontal work piece support elements on said frame means, respective horizontal platen members mounted on said frame means over said support elements, means to independently reciprocate said platen members, a horizontal work piece receiving member engaged on said frame means and being vertically movable thereon, said work piece receiving member having a horizontal front portion registrable with a selected horizontal work piece support element for feeding a work piece thereto for pressure processing and a horizontal rear portion simultaneously registering with the work piece support element for receiving a processed work piece therefrom, and means to selectively move the work piece receiving member vertically on said frame means to positions of registry with said horizontal work piece support elements.
Claim 2
Dependent Claim
134 words
A multiple molding press assembly comprising upstanding frame means, a plurality of vertically spaced fixed horizontal work piece support elements on said frame means, respective horizontal platen members mounted on said frame means over said support elements, means to independently reciprocate said platen members, a horizontal work piece receiving member engaged on said frame means and being vertically movable thereon, said work piece receiving member having a horizontal front portion registrable with a selected horizontal work piece support element for feeding a work piece thereto for pressure processing and a horizontal rear portion simultaneously registering with the work piece support element for receiving a processed work piece therefrom, and means to selectively move the work piece receiving member vertically on said frame means to positions of registry with said horizontal work piece support elements.
Claim 3
Dependent Claim
32 words
The multiple molding press assembly of claim 1, and wherein the means to reciprocate said platen member comprises respective fluid pressure-operated driving members connected between the platen members and said frame means.
Claim 4
Dependent Claim
34 words
The multiple molding press assembly of claim 2, and respective positive and negative pressure fluid sources, and means for selectively connecting said positive and negative pressure fluid sources to said fluid pressure-operated driving members.
Claim 5
Dependent Claim
30 words
The multiple molding press assembly of claim 3, and wherein said driving members comprise flexible bellows members connected between the platen members and upwardly adjacent portions of said frame means.
Claim 6
Dependent Claim
45 words
The multiple molding press assembly of claim 4, and means normally connecting the bellow members to said negative pressure fluid source, said means for selectively connecting the sources to the bellows members comprising reversing valve means interconnecting the bellows members with said pressure fluid sources.
Claim 7
Dependent Claim
85 words
The multiple molding press assembly of claim 5, and wherein said reversing valve means comprises respective main fluid pressure-operated valves connected between the fluid pressure sources and said bellows members and having ports normally connecting said negative fluid pressure source to said bellows members and other ports connecting the positive fluid pressure source to the bellows members responsive to operating fluid pressure applied to the main valves, and independently controlled pilot valve means operatively connected between the positive fluid pressure source and the main valves.
Claim 8
Dependent Claim
27 words
The multiple molding press assembly of claim 6, and wherein said pilot valve means comprise respective valves having operating solenoids, and means to selectively energize said solenoids.
Claim 9
Dependent Claim
38 words
The multiple molding press assembly of claim 7, and means to prevent energization of a selected solenoid unless the vertically movable work piece receiving member is at a level substantially registering with the corresponding work piece support element.
Claim 10
Dependent Claim
25 words
The multiple molding press assembly of claim 1, and transversely movable work piece-engageable feeder means on the front portion of the worK piece receiving member.
Claim 11
Dependent Claim
38 words
The multiple molding press assembly of claim 9, and means to actuate said feeder means responsive to the positioning of said work piece receiving member at a selected position of registry with a horizontal work piece support element.
Claim 12
Dependent Claim
41 words
The multiple molding press assembly of claim 10, and means to move each platen member downwardly to press position responsive to actuation of said feeder means through a feeding stroke substantially sufficient to move a work piece beneath the platen member.
Claim 13
Dependent Claim
30 words
The multiple molding press assembly of claim 11, and means to maintain downward press force on the platen member for a timed period and to thereafter release the platen member.
Claim 14
Dependent Claim
62 words
The multiple molding press assembly of claim 12, and wherein said means to move each platen member downwardly to press position comprises an expansible bellows member connected between the platen member and an upwardly adjacent portion of said frame means, and means to admit pressure fluid into said bellows member responsive to the actuation of said feeder means through said feeding stroke.
Claim 15
Dependent Claim
32 words
The multiple molding press assembly of claim 13, and means to return said feeder means on said work piece receiving member after said feeder means reaches the end of said feeding stroke.
Claim 16
Dependent Claim
44 words
The multiple molding press assembly of claim 14, and wherein said work piece receiving member has a normal ''''home'''' position, and means to return said work piece receiving member to said ''''home'''' position at the end of the retraction stroke of said feeder means.
Claim 17
Dependent Claim
33 words
The multiple molding press assembly of claim 15, and wherein said normal ''''home'''' position of said work piece receiving member is substantially in registry with one of said horizontal work piece support elements.
Claim 18
Dependent Claim
38 words
The multiple molding press assembly of claim 16, and wherein at least three vertically spaced fixed horizontal work piece support elements are provided and said normal ''''home'''' position is in registry with an intermediate work piece support element.
Claim 19
Dependent Claim
49 words
The multiple molding press assembly of claim 1, and wherein the means to move said work piece receiving member vertically on said frame means comprises vertical screw means on said frame means and threadedly engaged with said work piece receiving member, and means to rotate said vertical screw means.
Claim 20
Dependent Claim
45 words
The multiple molding press assembly of claim 18, and wherein said screw means is journaled on said frame means and said means to rotate said vertical screw means comprises a reversible electric motor and means drivingly coupling said electric motor to said vertical screw means.
Claim 21
Dependent Claim
59 words
The multiple molding press assembly of claim 1, and transversely movable workpiece-engageable feeder means on the front portion of the workpiece receiving member, and wherein said transversely movable feeder means comprises transverse guide rail means on said workpiece receiving member, a workpiece engaging abutment member slidably mounted on said rail means, and drive means connected to said abutment member.
Claim 22
Dependent Claim
37 words
The multiple molding press assembly of claim 20, and wherein said last-named drive means comprises a reversible electric motor mounted on said workpiece receiving member, and means drivingly connecting said last-named electric motor to said abutment member.
Claim 23
Dependent Claim
51 words
The multiple molding press assembly of claim 20, and horizontal drive roller means longitudinally journaled on said rear portion of said workpiece receiving member for drivingly engaging a workpiece ejected rearwardly from beneath a platen member, and means drivingly coupling said roller means to said abutment member for actuation simultaneously therewith.
Claim 24
Dependent Claim
71 words
The multiple molding press assembly of claim 1, and wherein the means to reciprocate said platen members comprises respective fluid pressure-operated driving members connected between the platen members and said frame means, respective positive and negative pressure fluid sources, means for selectively conNecting said positive and negative pressure fluid sources to said fluid pressure-operated driving members, and means to maintain the pressure of said negative pressure fluid source between predetermined limits.
Claim 25
Dependent Claim
86 words
The multiple molding press assembly of claim 23, and wherein said negative pressure fluid source comprises a vacuum pump and a drive motor operatively connected to said pump, said last-named motor having an energizing circuit including a pressure-responsive switch connected so as to respond to the output pressure of said vacuum pump, said switch having auxiliary contacts, transversely movable workpiece-engageable feeder means on the front portion of the workpiece receiving member, and means to inhibit action of said feeder means unless said auxiliary contacts are closed.
Claim 26
Dependent Claim
142 words
The multiple molding press assembly of claim 1, and transversely movable workpiece-engageable feeder means on the front portion of the workpiece receiving member, means to actuate said feeder means responsive to the positioning of said workpiece receiving member at a selected position of registry with a horizontal workpiece support element, means to move each platen member downwardly to press position responsive to actuation of said feeder means through a feeding stroke substantially sufficient to move a workpiece beneath the platen member, means to maintain downward press force on the platen member for a timed period and to thereafter release the platen member, indicator means, and means to energize said indicator means a short time prior to the end of said timed period, whereby said workpiece receiving member may be started toward said selected position of registry with the horizontal workpiece support element.
Claim 27
Dependent Claim
77 words
A multiple molding press assembly comprising a support, a plurality of vertically spaced independently operable press units on said support, means to selectively operate said press units, a workpiece elevator adjacent said support adapted to receive a workpiece for pressure processing, means to selectively move said elevator vertically into registry with said press units, and means on the elevator to move a workpiece horizontally into a press unit when it is in registry with said press unit.
Claim 28
Dependent Claim
77 words
A multiple molding press assembly comprising a support, a plurality of vertically spaced independently operable press units on said support, means to selectively operate said press units, a workpiece elevator adjacent said support adapted to receive a workpiece for pressure processing, means to selectively move said elevator vertically into registry with said press units, and means on the elevator to move a workpiece horizontally into a press unit when it is in registry with said press unit.
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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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |