GB855636A - Improvements in or relating to multiple cylinder presses - Google Patents
Improvements in or relating to multiple cylinder pressesInfo
- Publication number
- GB855636A GB855636A GB5127/59A GB512759A GB855636A GB 855636 A GB855636 A GB 855636A GB 5127/59 A GB5127/59 A GB 5127/59A GB 512759 A GB512759 A GB 512759A GB 855636 A GB855636 A GB 855636A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- pistons
- conduits
- working
- compensating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/22—Synchronisation of the movement of two or more servomotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/24—Control arrangements for fluid-driven presses controlling the movement of a plurality of actuating members to maintain parallel movement of the platen or press beam
- B30B15/245—Control arrangements for fluid-driven presses controlling the movement of a plurality of actuating members to maintain parallel movement of the platen or press beam using auxiliary cylinder and piston means as actuating members
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Presses (AREA)
- Press Drives And Press Lines (AREA)
Abstract
855,636. Hydraulic presses. EISENUND HAMMERWERK G.m.b.H. Feb. 13, 1959 [Feb. 13, 1958], No. 5127/59. Class 69 (2). A multiple-cylinder press comprises conduits 5, 6 supplying fluid pressure to two working pistons 1, 2, two compensating conduits 20, 21 providing a synchronizing device for the pistons, and two slide valves 34, 35 which control the conduits 5, 6 and have pistons at each end, the pistons 32, 36 at one end of the valves being connected to one compensating conduit 21, and the pistons 33, 37 at the other end being connected to the other compensating conduit 20, whereby the slide valves are displaced to cut-off the fluid pressure to the working piston encountering no resistance or less resistance than the other working piston on descent of the ram 3. The compensating conduits are connected to auxiliary pistons 18, 19 in such a way that upon downward movement of one of the working pistons, the pressure in the fluid beneath its associated auxiliary piston is transmitted to the space above the auxiliary piston associated with the other piston to maintain parallel movement of the ram 3. An increase in resistance to the movement of one of the pistons, say piston 1, results in an increase in pressure in the compensating conduit 21 and a conduit 26 connected to the pistons 32, 36, piston 32 being moved to actuate the slide valve 34 to reduce the fluid supply from a pump 9 to the conduit 5 leading to the working piston 2, the piston 36, which has a larger cross-sectional area than the piston 37 at the other end of the slide valve 35 already maintaining that valve in the open position. Similar increase in resistance to working piston 2 results in the supply to piston 1 being reduced. The conduits 20, 21 are connected by check valves 25, 29 to a high-pressure supply consisting of an accumulator 13 and hand pump 12 which also actuate a piston-andcylinder device 10 to raise the ram 3. A manual- or pedal-controlled valve connects the pump 9 to the conduits 5, 6 or to exhaust. Relief valves 38 prevent excess pressure occurring in the system.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEE15364A DE1231558B (en) | 1958-02-13 | 1958-02-13 | Hydraulic synchronization control for multi-cylinder presses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB855636A true GB855636A (en) | 1960-12-07 |
Family
ID=7069014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5127/59A Expired GB855636A (en) | 1958-02-13 | 1959-02-13 | Improvements in or relating to multiple cylinder presses |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH380537A (en) |
| DE (1) | DE1231558B (en) |
| FR (1) | FR1220292A (en) |
| GB (1) | GB855636A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779992A (en) * | 2019-03-21 | 2019-05-21 | 福建工程学院 | A kind of multi-hydraulic-cylinder synchronous control system that novel variable speed pump control is directly driven |
| SE2150814A1 (en) * | 2021-06-23 | 2022-12-24 | Metso Outotec Usa Inc | A hydraulic system for a roller crusher |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4406212A (en) * | 1979-06-19 | 1983-09-27 | British Aerospace Public Limited Company | Hydraulic apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR58505E (en) * | 1948-01-12 | 1954-01-27 | Device for synchronizing piston movement in presses or multi-column elevators | |
| DE1004924B (en) * | 1952-01-25 | 1957-03-21 | Anton Joseph Van Broekhoven | Hydraulic press or scissors with parallel guidance of the press beam |
-
1958
- 1958-02-13 DE DEE15364A patent/DE1231558B/en active Pending
-
1959
- 1959-02-06 CH CH6924059A patent/CH380537A/en unknown
- 1959-02-12 FR FR786652A patent/FR1220292A/en not_active Expired
- 1959-02-13 GB GB5127/59A patent/GB855636A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779992A (en) * | 2019-03-21 | 2019-05-21 | 福建工程学院 | A kind of multi-hydraulic-cylinder synchronous control system that novel variable speed pump control is directly driven |
| SE2150814A1 (en) * | 2021-06-23 | 2022-12-24 | Metso Outotec Usa Inc | A hydraulic system for a roller crusher |
| SE545558C2 (en) * | 2021-06-23 | 2023-10-24 | Metso Outotec Usa Inc | A hydraulic system for a roller crusher and a roller crusher |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1231558B (en) | 1966-12-29 |
| CH380537A (en) | 1964-07-31 |
| FR1220292A (en) | 1960-05-24 |
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