CN102562703A - Input-pressure-variable oil circuit structure of oil cylinder - Google Patents
Input-pressure-variable oil circuit structure of oil cylinder Download PDFInfo
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- CN102562703A CN102562703A CN2011103749795A CN201110374979A CN102562703A CN 102562703 A CN102562703 A CN 102562703A CN 2011103749795 A CN2011103749795 A CN 2011103749795A CN 201110374979 A CN201110374979 A CN 201110374979A CN 102562703 A CN102562703 A CN 102562703A
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Abstract
The invention belongs to hydraulic technology, relates to an improved input oil circuit of an oil cylinder in a press or other machinery, and provides an input-pressure-variable oil circuit structure of an oil cylinder. The input-pressure-variable oil circuit structure comprises the oil cylinder (1), a main reversing valve (4), a first pipeline (2) and a second pipeline (3), and is characterized by comprising a pressure-variable oil circuit unit, and the pressure-variable oil circuit unit consists of a second reversing valve (5), a first pressure gauge (6), a first pressure regulating valve (7), a second pressure gauge (8), a second pressure regulating valve (9) and a third pipeline (10). The input-pressure-variable oil circuit structure of the oil cylinder can provide more than two different pressure values in a working stroke, and meets needs of a processing process with the pressure change requirement in the working stroke.
Description
Technical field
The invention belongs to hydraulics, relate to improvement oil cylinder input oil circuit in press machine or other machineries.
Background technique
In commercial production particularly on the assembly line; In order to enhance productivity, reduce working strength of workers; Various press machinees can be set; The pipeline structure of oil cylinder input oil circuit is referring to Fig. 1 in traditional press machine, and it is made up of an oil cylinder 1, main reversing valve 4, first pipeline 2 and second pipeline 3.Main reversing valve 4 is two four-way electromagnetic reversing valves; The first turnover port 4a of main reversing valve 4 is communicated with the first turnover port 1a of oil cylinder 1 through first pipeline 2; One end of second pipeline 3 is communicated with the second turnover port 4b of main reversing valve 4; The other end of second pipeline 3 is communicated with the second turnover port 1b of oil cylinder 1; The oil return port 4c of main reversing valve 4 is communicated with fuel tank, and the oil-feed port 4p of main reversing valve 4 is communicated with the output port of hydraulic station, and the control signal input end of main reversing valve 4 is connected with the corresponding output end of controller.Its working principle is: when oil cylinder 1 was in the pressure station, controller control main reversing valve 4 was in the pressure station, and at this moment, the oil-feed port 4p of main reversing valve 4 is communicated with the second turnover port 4b, and the oil return port 4c of main reversing valve 4 is communicated with the first turnover port 4a.Pressure oil is through the right chamber of the second turnover port 1b entering oil cylinder 1, and piston is to left movement, and the fluid in oil cylinder 1 left chamber is through oil return port 4c oil sump tank; When oil cylinder 1 is in when resetting station, controller control main reversing valve 4 is in the station that resets, and at this moment, the oil-feed port 4p of main reversing valve 4 is communicated with the first turnover port 4a, and the oil return port 4c of main reversing valve 4 and second passes in and out port 4b and is communicated with.Pressure oil is through the left chamber of the first turnover port 1a entering oil cylinder 1, and piston moves right, and the fluid in oil cylinder 1 right chamber is through oil return port 4c oil sump tank.The shortcoming of this oil channel structures is: the incoming pressure of oil cylinder 1 remains a constant numerical value, makes the working pressure of press machine remain a constant numerical value.And for the course of working that in a working stroke, has variation in pressure to require, this oil channel structures can't satisfy its needs.
Summary of the invention
The objective of the invention is: provide a kind of oil cylinder of the different pressures value more than 2 that can in a working stroke, provide to become the incoming pressure oil channel structures, to satisfy the needs of the course of working that the variation in pressure requirement is arranged in a working stroke.
Technological scheme of the present invention is: oil cylinder becomes the incoming pressure oil channel structures; Comprise an oil cylinder 1, main reversing valve 4, first pipeline 2 and second pipeline 3; Main reversing valve 4 is two four-way electromagnetic reversing valves; The first turnover port 4a of main reversing valve 4 is communicated with the first turnover port 1a of oil cylinder 1 through first pipeline 2, and an end of second pipeline 3 is communicated with the second turnover port 4b of main reversing valve 4, and the oil return port 4c of main reversing valve 4 is communicated with fuel tank; The oil-feed port 4p of main reversing valve 4 is communicated with the output port of hydraulic station, and the control signal input end of main reversing valve 4 is connected with the corresponding output end of controller; It is characterized in that,
(1) by a change incoming pressure oil circuit unit of forming by second selector valve 5, first pressure gauge 6, first pressure regulator valve 7, second pressure gauge 8, second pressure regulator valve 9 and the 3rd pipeline 10; Second selector valve 5 is 3-position 4-way solenoid directional control valves; The oil-feed port 5p of second selector valve 5 is communicated with the other end of second pipeline 3; The first turnover port 5a of second selector valve 5 is communicated with a port of first pressure regulator valve 7; Another port of first pressure regulator valve 7 is communicated with an end of the 3rd pipeline 10, and the other end of the 3rd pipeline 10 is communicated with the second turnover port 1b of oil cylinder 1, and the pressure-sensitive port of first pressure gauge 6 is communicated with the pressure measurement port of first pressure regulator valve 7; The second turnover port 5b of second selector valve 5 is communicated with a port of second pressure regulator valve 9, and another port of second pressure regulator valve 9 is communicated with an end of the 3rd pipeline 10, and the pressure-sensitive port of second pressure gauge 8 is communicated with the pressure measurement port of second pressure regulator valve 9; The control signal input end of second selector valve 5 is connected with the corresponding output end of controller;
(2) by a return line of being made up of the 4th pipeline 12 and one-way valve 11, the filler opening of one-way valve 11 is communicated with the second turnover port 1b of oil cylinder 1, and the oil outlet of one-way valve 11 is communicated with the second turnover port 4b of main reversing valve 4 through the 4th pipeline 12.
Advantage of the present invention is: provide a kind of oil cylinder of the different pressures value more than 2 that can in a working stroke, provide to become the incoming pressure oil channel structures, satisfied the needs of the course of working that the variation in pressure requirement is arranged in a working stroke.For press machine, can in a pressure backhaul of a press machine, multiple force value be provided, can reduce the quantity of press machine aborning, reduce production costs, improved manufacturing efficiency.
Description of drawings
Fig. 1 is the pipeline structure schematic representation of oil cylinder input oil circuit in a kind of traditional press machine.
Fig. 2 is the structural representation of one embodiment of the invention.
Fig. 3 is the structural representation of another embodiment of the present invention.
Embodiment
Do further detailed description in the face of the present invention down.Referring to Fig. 2; Oil cylinder becomes the incoming pressure oil channel structures; Comprise an oil cylinder 1, main reversing valve 4, first pipeline 2 and second pipeline 3, main reversing valve 4 is two four-way electromagnetic reversing valves, and the first turnover port 4a of main reversing valve 4 passes in and out port 1a through first pipeline 2 with first of oil cylinder 1 and is communicated with; One end of second pipeline 3 is communicated with the second turnover port 4b of main reversing valve 4; The oil return port 4c of main reversing valve 4 is communicated with fuel tank, and the oil-feed port 4p of main reversing valve 4 is communicated with the output port of hydraulic station, and the control signal input end of main reversing valve 4 is connected with the corresponding output end of controller; It is characterized in that,
(1) by a change incoming pressure oil circuit unit of forming by second selector valve 5, first pressure gauge 6, first pressure regulator valve 7, second pressure gauge 8, second pressure regulator valve 9 and the 3rd pipeline 10; Second selector valve 5 is 3-position 4-way solenoid directional control valves; The oil-feed port 5p of second selector valve 5 is communicated with the other end of second pipeline 3; The first turnover port 5a of second selector valve 5 is communicated with a port of first pressure regulator valve 7; Another port of first pressure regulator valve 7 is communicated with an end of the 3rd pipeline 10, and the other end of the 3rd pipeline 10 is communicated with the second turnover port 1b of oil cylinder 1, and the pressure-sensitive port of first pressure gauge 6 is communicated with the pressure measurement port of first pressure regulator valve 7; The second turnover port 5b of second selector valve 5 is communicated with a port of second pressure regulator valve 9, and another port of second pressure regulator valve 9 is communicated with an end of the 3rd pipeline 10, and the pressure-sensitive port of second pressure gauge 8 is communicated with the pressure measurement port of second pressure regulator valve 9; The control signal input end of second selector valve 5 is connected with the corresponding output end of controller;
(2) by a return line of being made up of the 4th pipeline 12 and one-way valve 11, the filler opening of one-way valve 11 is communicated with the second turnover port 1b of oil cylinder 1, and the oil outlet of one-way valve 11 is communicated with the second turnover port 4b of main reversing valve 4 through the 4th pipeline 12.
Working principle of the present invention is: referring to Fig. 2, this is the oil channel structures schematic representation of one embodiment of the present of invention.
If the piston of oil cylinder 1 is from limit on the left limit position when motion to the right; Controller makes the oil-feed port 4p of main reversing valve 4 and the first turnover port 4a be communicated with, second pass in and out port 4b and be communicated with 4c; Pressure oil is through the first turnover port 1a entering oil cylinder 1 left chamber of first pipeline 2 with oil cylinder 1; The second turnover port 4b and the oil return port 4c of the second turnover port 1b of the fluid in the oil cylinder 1 right chamber through oil cylinder 1, the 3rd pipeline 10, one-way valve 11, the 4th pipeline 12 and main reversing valve 4 get back to fuel tank, and the piston of oil cylinder is got back to the right-hand member of oil cylinder.
When working pressure requires to P1 and P2; P1 is that the first sequential working pressure, P2 are the second sequential working pressure; Through adjusting the realization working pressure P1 and the P2 of first pressure regulator valve 7 and second pressure regulator valve 9, can start working after first pressure gauge 6 and second pressure gauge 8 be adjusted into P1 and P2 respectively.
At first, controller makes the oil-feed port 4p of main reversing valve 4 be communicated with the second turnover port 4b, and the oil-feed port 5p of second selector valve 5 is communicated with the first turnover port 5a, and the second turnover port 5b of second selector valve 5 ends; Through the feasible pressure that gets into the hydraulic oil of right cavity of cylinder of the control of first pressure regulator valve 7 is P1.
After first work step was accomplished, controller made 5 switching-overs of second selector valve, and the oil-feed port 5p of second selector valve 5 is communicated with the second turnover port 5b, and the first turnover port 5a ends; Through the feasible pressure that gets into the hydraulic oil of right cavity of cylinder of the control of second pressure regulator valve 9 is P2, completion whole machining process process; Through controller oil cylinder is resetted then.
In order to obtain more incoming pressure; The quantity of said change incoming pressure oil circuit unit is 2～4; All change incoming pressure oil circuit unit all are connected in parallel between oil cylinder 1 and the main reversing valve 4; The oil-feed port 5p of second selector valve 5 all is communicated with the other end of second pipeline 3 in all change incoming pressure oil circuit unit, and the other end of the 3rd pipeline 10 all is communicated with the second turnover port 1b of oil cylinder 1 in all transformation power oil circuit unit.Referring to Fig. 3, this is the oil channel structures schematic representation of an alternative embodiment of the invention.The transformation power oil circuit unit of two parallel connections is arranged here, 4 different incoming pressures can be provided.
Referring to Fig. 3, this is the oil channel structures schematic representation of an alternative embodiment of the invention, and the quantity that becomes incoming pressure oil circuit unit among this embodiment is 2, thereby has realized 4 different input service pressure.2 become can only have in the incoming pressure oil circuit unit one in running order; When the change incoming pressure oil circuit unit that is positioned at the left side is in running order; Controller makes second selector valve 5 of the change incoming pressure oil circuit unit that is arranged in the right side cut-off state that mediates; 4 ports of this second selector valve 5 all are in closed condition, and the change incoming pressure oil circuit unit that is equivalent to be positioned at the right side does not exist.When and change incoming pressure oil circuit unit be positioned on the left of in running order when the change incoming pressure oil circuit unit that is positioned at the right side mediated cut-off state, the change incoming pressure oil circuit unit on the left of being equivalent to be positioned at did not exist.The quantity that no matter becomes incoming pressure oil circuit unit is into several, and having only one, to become incoming pressure oil circuit unit in running order, other the change incoming pressure oil circuit unit cut-off state that all mediates.
Claims (2)
1. oil cylinder becomes the incoming pressure oil channel structures; Comprise an oil cylinder [1], a main reversing valve [4], first pipeline [2] and second pipeline [3]; Main reversing valve [4] is two four-way electromagnetic reversing valves; The first turnover port [4a] of main reversing valve [4] is communicated with the first turnover port [1a] of oil cylinder [1] through first pipeline [2], and an end of second pipeline [3] is communicated with the second turnover port [4b] of main reversing valve [4], and the oil return port [4c] of main reversing valve [4] is communicated with fuel tank; The oil-feed port [4p] of main reversing valve [4] is communicated with the output port of hydraulic station, and the control signal input end of main reversing valve [4] is connected with the corresponding output end of controller; It is characterized in that,
(1) a change incoming pressure oil circuit unit of being made up of second selector valve [5], first pressure gauge [6], first pressure regulator valve [7], second pressure gauge [8], second pressure regulator valve [9] and the 3rd pipeline [10] is arranged; Second selector valve [5] is a 3-position 4-way solenoid directional control valve; The oil-feed port [5p] of second selector valve [5] is communicated with the other end of second pipeline [3]; The first turnover port [5a] of second selector valve [5] is communicated with a port of first pressure regulator valve [7]; Another port of first pressure regulator valve [7] is communicated with an end of the 3rd pipeline [10]; The other end of the 3rd pipeline [10] is communicated with the second turnover port [1b] of oil cylinder [1], and the pressure-sensitive port of first pressure gauge [6] is communicated with the pressure measurement port of first pressure regulator valve [7]; The second turnover port [5b] of second selector valve [5] is communicated with a port of second pressure regulator valve [9]; Another port of second pressure regulator valve [9] is communicated with an end of the 3rd pipeline [10], and the pressure-sensitive port of second pressure gauge [8] is communicated with the pressure measurement port of second pressure regulator valve [9]; The control signal input end of second selector valve [5] is connected with the corresponding output end of controller;
(2) return line of being made up of the 4th pipeline [12] and one-way valve [11] is arranged; The filler opening of one-way valve [11] is communicated with the second turnover port [1b] of oil cylinder [1], and the oil outlet of one-way valve [11] is communicated with the second turnover port [4b] of main reversing valve [4] through the 4th pipeline [12].
2. oil cylinder according to claim 1 becomes the incoming pressure oil channel structures; It is characterized in that; The quantity of said transformation power oil circuit unit is 2～4; All change incoming pressure oil circuit unit all are connected in parallel between oil cylinder [1] and the main reversing valve [4]; The oil-feed port [5p] of second selector valve [5] all is communicated with the other end of second pipeline [3] in all change incoming pressure oil circuit unit, and the other end of the 3rd pipeline [10] all is communicated with the second turnover port [1b] of oil cylinder [1] in all change incoming pressure oil circuit unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103749795A CN102562703A (en) | 2011-11-18 | 2011-11-18 | Input-pressure-variable oil circuit structure of oil cylinder |
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| CN2011103749795A CN102562703A (en) | 2011-11-18 | 2011-11-18 | Input-pressure-variable oil circuit structure of oil cylinder |
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| CN102562703A true CN102562703A (en) | 2012-07-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111822977A (en) * | 2019-04-17 | 2020-10-27 | 盾安环境技术有限公司 | Press-fitting mechanism and part press-fitting method |
Citations (7)
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| GB1481415A (en) * | 1974-08-06 | 1977-07-27 | Hawker Siddeley Water Eng Ltd | Presses for compacting screenings or similar wet waste materials |
| JPS63242500A (en) * | 1987-03-31 | 1988-10-07 | Meiki Co Ltd | Hydraulic press device |
| GB2386934B (en) * | 1999-02-27 | 2003-12-03 | Luk Lamellen & Kupplungsbau | Damping device in a hydraulic operating system of a shift and separate clutch |
| CN201246357Y (en) * | 2008-05-15 | 2009-05-27 | 上海新力机器厂 | Hydraulic control system of bender |
| CN101575978A (en) * | 2009-06-01 | 2009-11-11 | 浙江大学 | Pressure-speed mixed control shield propulsion hydraulic system |
| CN201433949Y (en) * | 2009-01-19 | 2010-03-31 | 杭州鑫高科技有限公司 | Speed and pressure regulation hydraulic system |
| CN202001407U (en) * | 2011-01-27 | 2011-10-05 | 济南易久自动化技术有限公司 | Controllable multi-press power concentration oil supply hydraulic system of multiple hydraulic press machines |
-
2011
- 2011-11-18 CN CN2011103749795A patent/CN102562703A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1481415A (en) * | 1974-08-06 | 1977-07-27 | Hawker Siddeley Water Eng Ltd | Presses for compacting screenings or similar wet waste materials |
| JPS63242500A (en) * | 1987-03-31 | 1988-10-07 | Meiki Co Ltd | Hydraulic press device |
| GB2386934B (en) * | 1999-02-27 | 2003-12-03 | Luk Lamellen & Kupplungsbau | Damping device in a hydraulic operating system of a shift and separate clutch |
| CN201246357Y (en) * | 2008-05-15 | 2009-05-27 | 上海新力机器厂 | Hydraulic control system of bender |
| CN201433949Y (en) * | 2009-01-19 | 2010-03-31 | 杭州鑫高科技有限公司 | Speed and pressure regulation hydraulic system |
| CN101575978A (en) * | 2009-06-01 | 2009-11-11 | 浙江大学 | Pressure-speed mixed control shield propulsion hydraulic system |
| CN202001407U (en) * | 2011-01-27 | 2011-10-05 | 济南易久自动化技术有限公司 | Controllable multi-press power concentration oil supply hydraulic system of multiple hydraulic press machines |
Non-Patent Citations (2)
| Title |
|---|
| 张利平: "《液压传动系统及设计》", 31 August 2005 * |
| 杨曙东等: "《液压传动与气压传动（第三版）》", 30 April 2008 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111822977A (en) * | 2019-04-17 | 2020-10-27 | 盾安环境技术有限公司 | Press-fitting mechanism and part press-fitting method |
| CN111822977B (en) * | 2019-04-17 | 2022-05-13 | 盾安环境技术有限公司 | Press mounting mechanism and part press mounting method |
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Application publication date: 20120711 |