Patent US4144489A successfully refreshed from Google Patents.
Patent US3948162A successfully refreshed from Google Patents.
US3948162A
Expired / Lapsed
US
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Press line system
Assignee: Aida Engineering Ltd
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Filing: 1975-04-03
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Granted: 1976-04-06
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Expires: 1995-04-03
Abstract
Abstract A press line system in which there is provided a series of individually driven presses arranged in a line and each having a work loading means and an unloader and in which each of said presses is fed with a workpiece by activation of its associated loading means. As the loading means returns to its initial position, a signal is generated for operating the press for a stroke of operation. After the stroke of operation has been completed, a further signal is generated for actuating the unloader associated with the press for discharging the work from the press. An intermittently driven conveyor is arranged between adjacent presses for conveying the work from the preceding press to the succeeding press, said conveyor being advanced in increments in response to a signal generated as the conveyor receives the work from said unloader associated with the preceding press until the work on said conveyor reaches a predetermined work feed position with respect to the succeeding press whereby the succeeding press can be operated in synchronization with the preceding press without being affected by the operation of the preceding press.
Inventors
- 👤 Munehiro Numba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:54
CPC Classifications
B; B23; B23Q; B23Q7/00; B23Q7/14; B21; B21D; B21D43/00; B21D43/02; B21D43/04; B21D43/05
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
338 words
A press line system including a series of individually driven presses arranged in a line and each press having a feed side and a delivery side, the first press in the line having an unloader at the delivery side and means for feeding work thereto, each of the other presses having a loader at the feed side and an unloader at the delivery side, an intermittently driven conveyor arranged between the unloader and loader of each two adjacent presses in the line for moving the work from the preceding press to the succeeding press, each loader and unloader having a reciprocable carrier movable between fully advanced and fully retracted positions, each carrier having a feeding arm capable of upward and downward movements, a work clamping means carried by each feeding arm, said conveyor having a loading end adjacent the unloader of a preceding press and an unloading end adjacent the loader of a succeeding press, a first work receiving station, means mounting the first station at the loading end of each conveyor for upward and downward movements, said first station normally being in an elevated position, a second work receiving station, and means mounting the second station at the unloading end of each conveyor, said second station normally being in a lowered position, the arrangement being such that when work is fed to the first press, the first press operates on the work and upon completion thereof actuates the unloader for discharging the work from the press and clamping means which clamps the work, raises the feeding arm, retracts the carrier, lowers the feeding arm, unclamps the work, raises the feeding arm and deposits the work on the elevated first work receiving station which moves downward and positions the work on the conveyor which advances to the second work receiving station whereupon the first station is moved to its normal elevated position and the second station moves upward to load the work in the loader of the succeeding press which initiates a similar operation of the succeeding press.
Claim 2
Dependent Claim
338 words
A press line system including a series of individually driven presses arranged in a line and each press having a feed side and a delivery side, the first press in the line having an unloader at the delivery side and means for feeding work thereto, each of the other presses having a loader at the feed side and an unloader at the delivery side, an intermittently driven conveyor arranged between the unloader and loader of each two adjacent presses in the line for moving the work from the preceding press to the succeeding press, each loader and unloader having a reciprocable carrier movable between fully advanced and fully retracted positions, each carrier having a feeding arm capable of upward and downward movements, a work clamping means carried by each feeding arm, said conveyor having a loading end adjacent the unloader of a preceding press and an unloading end adjacent the loader of a succeeding press, a first work receiving station, means mounting the first station at the loading end of each conveyor for upward and downward movements, said first station normally being in an elevated position, a second work receiving station, and means mounting the second station at the unloading end of each conveyor, said second station normally being in a lowered position, the arrangement being such that when work is fed to the first press, the first press operates on the work and upon completion thereof actuates the unloader for discharging the work from the press and clamping means which clamps the work, raises the feeding arm, retracts the carrier, lowers the feeding arm, unclamps the work, raises the feeding arm and deposits the work on the elevated first work receiving station which moves downward and positions the work on the conveyor which advances to the second work receiving station whereupon the first station is moved to its normal elevated position and the second station moves upward to load the work in the loader of the succeeding press which initiates a similar operation of the succeeding press.
Claim 3
Dependent Claim
101 words
The press line system as claimed in claim 1, in which said first work receiving station is provided with control means operative upon deposit of the work thereon to move the station downward to position the work on the conveyor, advance the conveyor and move the first station upward to its normal elevated position and said second work receiving station being provided with control means operative when the work reaches the second station to move the second station upward to feed the work into the loader of the succeeding press and move the second station downward to its normal lowered position.
Claim 4
Dependent Claim
28 words
The press line system as claimed in claim 2 in which said first press is electrically operated in response to the supply of work to the first press.
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) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |