GB1235416A - Improvements in or relating to a device for controlling the feeding of hydraulic power devices - Google Patents
Improvements in or relating to a device for controlling the feeding of hydraulic power devicesInfo
- Publication number
- GB1235416A GB1235416A GB09414/69A GB1941469A GB1235416A GB 1235416 A GB1235416 A GB 1235416A GB 09414/69 A GB09414/69 A GB 09414/69A GB 1941469 A GB1941469 A GB 1941469A GB 1235416 A GB1235416 A GB 1235416A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluid
- pistons
- chambers
- chamber
- power devices
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Press Drives And Press Lines (AREA)
Abstract
1,235,416. Hydraulic presses. V. L. A. BIANCHI. 16 April, 1969 [10 May, 1968], No. 19414/69. Heading B5F. [Also in Divisions B3 and F1] A device for controlling the feeding of hydraulic power devices, in particular power devices for actuating the pressing element of a press or a shearing machine, to maintain a parallel displacement of the element, has fluid delivered by pump 34 via distributer 36 and pipe 37 into conduit 16a so as to push cylindrical element 11 downwards. The front face 11a moves down and touches the rear faces 7c of rods 7 of feed pistons 6 so that the latter are also driven downwards and discharge the hydraulic fluid contained in chambers 2a into chambers 26 of power devices 27. The pistons 28 of the power devices move upwards and drive pressing plate 29 along with them. Fluid is sucked from container 35 through pipe 41 into chamber 8b (see Fig. 3) by the vacuum created during the downward motion of the cylindrical element 11 until the pressing plate meets the workpiece. At this point the resistance offered to its feed motion leads to an abrupt increase in the pressure of the fluid which opens calibrated valve 39 so that fluid penetrates into the chamber 8b and closes valve 40. The action of this fluid provides an additional thrust which is much greater than the thrust caused by the fluid in chamber 14a (see Fig. 3), thus providing the extra force required for the pressing or shearing operation. The cylindrical element 11 continues to move downwards until its front face 11a meets the upper face 1a of block 1. At this moment distributer 36 is reversed so that fluid passes into the chamber 14b through pipe 38 and conduit 16b, thus driving the cylindrical element 11 and feed pistons 6 upwards. The pistons 6 suck the fluid contained in chambers 26 of the power devices 27 so that the pistons 28 move downwards. The feed pistons 6 stop when they touch shoulder 23 whereas cylindrical element 11 continues upwards until its rear face touches side-plate 5. This movement frees apertures 10, thus communicating chamber 8a with chambers 2a, allowing hydraulic fluid to be sucked in from pin 18 if any leakage has occurred in the power devices 27. In a second embodiment chamber 55a is fed with fluid through pipe 37 so that piston 60 moves from left to right (see Fig. 4) and drives pistons 56 along with it. The hydraulic fluid in chambers 54a is delivered into chambers 26 of power devices 27 so that pressing plate 29 comes into contact with the workpiece. The vacuum produced in chambers 54b causes fluid to be sucked from container 35 through pipe 41, valves 40 and pipes 42. When pressing plate 29 meets the workpiece the increase in fluid pressure in pipe 37 opens calibrated valve 39 and closes valve 40 so that fluid enters chambers 54b, thus resulting in a considerable increase in thrust exerted on the pistons 28. When the pistons 56 and 60 reach the right-hand end of their travel the distributer 36 is reversed so that fluid enters chamber 55b and drives the pistons 60 and 56 back to their initial position in Fig. 4. When the pistons 56 and 60 reach the end of their travel to the left, rod 68 moves valve 64 from its bearing position on mouths 67, so that if hydraulic fluid does not fill the chamber 54a, fluid makeup takes place by suction of fluid from pan 18.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR151477 | 1968-05-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1235416A true GB1235416A (en) | 1971-06-16 |
Family
ID=8650128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB09414/69A Expired GB1235416A (en) | 1968-05-10 | 1969-04-16 | Improvements in or relating to a device for controlling the feeding of hydraulic power devices |
Country Status (4)
Country | Link |
---|---|
US (1) | US3590581A (en) |
DE (1) | DE1920184C3 (en) |
FR (1) | FR1575806A (en) |
GB (1) | GB1235416A (en) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2642357A1 (en) * | 1976-09-21 | 1978-03-23 | Hoesch & Soehne Eberhard | PLATE FILTER PRESS |
AT377833B (en) * | 1983-06-17 | 1985-05-10 | Achleitner Herbert | DRIVE ARRANGEMENT WITH TWO OR MORE HYDRAULIC CYLINDER PISTON UNITS |
IT1187790B (en) * | 1985-06-24 | 1987-12-23 | Corghi Elettromecc Spa | HYDRAULIC CONTROL SYSTEM FOR LIFT BRIDGES OF VEHICLES IN GENERAL |
EP0371176B1 (en) * | 1988-11-30 | 1994-01-12 | Aioi Seiki Inc. | Multi-boost synchronized hydraulic pump |
NL9200589A (en) * | 1992-03-30 | 1993-10-18 | Meijer Sjoerd | HYDRAULIC DEVICE WITH SIMILAR AUGERS. |
FR2695861B1 (en) * | 1992-09-22 | 1994-11-18 | Sipad Sa | Sensitive hydraulic device for speed and power selection adapted to a synchronous control system for multiple press cylinders. |
FR2696794B1 (en) * | 1992-10-09 | 1994-12-30 | Belva Sarl Ets | Actuator in synchronism with a plurality of positive hydraulic effectors. |
JPH07121429B2 (en) * | 1993-12-16 | 1995-12-25 | エス エム エス ハーゼンクレヴァー ゲゼルシャフト ミット ベシュレンクテル ハフツング | Forging machine |
FR2797799B1 (en) * | 1999-08-27 | 2001-10-26 | Presse A Decouper Soc Ind De | HYDRAULICALLY CONTROLLED MACHINE TOOL HAVING A PARTIALLY SUBMERSIBLE OIL CIRCUIT |
US7322190B2 (en) | 2004-02-09 | 2008-01-29 | Jr Automation Technologies Llc | Hydraulic system for synchronized extension of multiple cylinders |
US7047738B2 (en) * | 2004-02-09 | 2006-05-23 | Jr Automation Technologies, Llc | Hydraulic system for synchronized extension of multiple cylinders |
US7134280B2 (en) * | 2004-02-09 | 2006-11-14 | J.R. Automation Technologies, Llc | Hydraulic system for synchronized extension of multiple cylinders |
BE1016706A5 (en) * | 2005-07-26 | 2007-05-08 | Haco Nv | Press device with enhanced parallel system like. |
US7603942B1 (en) * | 2006-09-29 | 2009-10-20 | Hwh Corporation | Synchronization cylinder having chambers with different volumes |
US7926410B2 (en) * | 2007-05-01 | 2011-04-19 | J.R. Automation Technologies, L.L.C. | Hydraulic circuit for synchronized horizontal extension of cylinders |
RU2459123C1 (en) * | 2011-02-21 | 2012-08-20 | Федеральное гоударственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный политехнический университет" (ФГБОУ ВПО "СПбГПУ) | Hydraulic drive of cargo platform weighing and levelling |
RU2464452C1 (en) * | 2011-05-05 | 2012-10-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный политехнический университет" (ФГБОУ ВПО "СПбГПУ") | Hydraulic actuator for hanging and levelling of cargo platform |
RU2464453C1 (en) * | 2011-06-29 | 2012-10-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный политехнический университет" (ФГБОУ ВПО "СПбГПУ") | Hydraulic actuator for hanging and levelling of cargo platform |
RU2489609C1 (en) * | 2012-05-12 | 2013-08-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный политехнический университет" (ФГБОУ ВПО "СПбГПУ") | Hydraulic actuator for hanging and levelling of cargo platform |
CN103807239B (en) * | 2014-03-12 | 2015-09-16 | 南通恒力重工机械有限公司 | A kind of shear plate synchronous control hydraulic system based on Dual-output shaft motor |
CN103899586B (en) * | 2014-04-23 | 2016-03-02 | 南通恒力重工机械有限公司 | A kind of super sized type guillotine shear synchronization hydraulic system based on flow divider-combiner |
EP3207261B1 (en) * | 2014-10-17 | 2020-06-17 | Vehicle Service Group, LLC | Hydraulic synchronizer |
US11118578B2 (en) * | 2017-02-15 | 2021-09-14 | Extiel Holdings, Llc | Internally cooled inline drive compressor |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1357330A (en) * | 1920-11-02 | Lings lippincott and alfred j | ||
US1744885A (en) * | 1928-01-12 | 1930-01-28 | Leblond Mach Tool Co R K | Machine tool |
US1831238A (en) * | 1928-02-29 | 1931-11-10 | Oilgear Co | Multiple hydraulic drive |
US2499563A (en) * | 1949-01-10 | 1950-03-07 | Robert O Bill | Control means for multiple hydraulic jacks |
US2736294A (en) * | 1951-08-09 | 1956-02-28 | Smith Corp A O | Adjustable stroke ram and piston assembly |
US3400625A (en) * | 1966-09-14 | 1968-09-10 | Oak Products Inc | Machine tool |
US3407710A (en) * | 1966-12-14 | 1968-10-29 | Alpha Press Company | Stroke adjustment means for cylinder and piston assembly |
-
1968
- 1968-05-10 FR FR151477A patent/FR1575806A/fr not_active Expired
-
1969
- 1969-04-16 GB GB09414/69A patent/GB1235416A/en not_active Expired
- 1969-04-21 DE DE1920184A patent/DE1920184C3/en not_active Expired
- 1969-04-22 US US818230A patent/US3590581A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR1575806A (en) | 1969-07-25 |
DE1920184A1 (en) | 1969-11-27 |
DE1920184B2 (en) | 1978-09-07 |
US3590581A (en) | 1971-07-06 |
DE1920184C3 (en) | 1979-04-26 |
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