CN101463846B - Hydraulic system of full-hydraulic metal sheet straightener - Google Patents
Hydraulic system of full-hydraulic metal sheet straightener Download PDFInfo
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- CN101463846B CN101463846B CN2009100736550A CN200910073655A CN101463846B CN 101463846 B CN101463846 B CN 101463846B CN 2009100736550 A CN2009100736550 A CN 2009100736550A CN 200910073655 A CN200910073655 A CN 200910073655A CN 101463846 B CN101463846 B CN 101463846B
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- servocylinder
- hydraulic
- valve
- hydraulic system
- oil
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- 239000002184 metal Substances 0.000 title claims abstract description 13
- 239000012530 fluid Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 18
- 239000010720 hydraulic oil Substances 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The invention relates to a hydraulic system of an all-hydraulic metal plate straightening machine, belonging to the technical field of metal plate straightening machines. The hydraulic system is characterized in that pressure oil flowing out from a pressure oil pipeline (S) is led into the rodless chamber (B, B') of a servocylinder by a high-pressure energy accumulator, a normal open electromagnetic ball valve, a hydraulic control one way valve and the opening (E, E') of a servo proportional valve, the rod chamber (A, A') of the servocylinder is connected with the opening (F, F') of the servo proportional valve, and the hydraulic oil flows back into an oil return pipeline (L) by an oil return energy accumulator and a plug-in one way valve. The servo proportional valve controls the two chambers of the servocylinder, thereby increasing the natural frequency of a hydraulic system and the response speed of the servocylinder.
Description
Technical field
The invention belongs to the metal sheet straightener technical field, be specifically related to a kind of hydraulic system of full-hydraulic metal sheet straightener.
Background technique
Full-hydraulic metal sheet straightener is servocylinder to be controlled the quality requirement of realizing straightening plate by hydraulic system.At present both at home and abroad the hydraulic system of the full-hydraulic metal sheet straightener of design is as shown in Figure 1: in this system pressure oil from pressure oil pipeline S by often opening Solenoid ball valve 1.1,1.2 open Pilot operated check valve 4.1 earlier, 4.2,4.3,4.4, control servo proportion 2.1,2.2 spool action, make pressure oil from servo proportion 2.1,2.2 E, E ' mouthful connects servocylinder 7.1,7.2 rodless cavity B, B ', servo proportion 2.1,2.2 F, F ' mouthful blocks, and pressure oil reduces pressure after the setting pressure and servocylinder 7.1 through three-way pressure reducing valve 9 simultaneously, 7.2 rod chamber A, A ' connects.This hydraulic system can not improve the speed of response of servocylinder to instruction, can't satisfy arbor press high quality, high efficiency production requirement.
Summary of the invention
The objective of the invention is for full-hydraulic metal sheet straightener provides a kind of new hydraulic system, can overcome the shortcoming that prior art exists effectively.
The present invention is achieved in that as shown in Figure 2: pressure oil passes through high pressure accumulator 6.1 from pressure oil pipeline S, 6.2, often open Solenoid ball valve 1.1,1.2, Pilot operated check valve 4.1,4.2,4.4,4.5, servo proportion 2.1,2.2 E, E ' mouthful connects servocylinder 7.1,7.2 rodless cavity B, B ', electromagnetic relief valve 3.1,3.2 with servocylinder 7.1,7.2 rodless cavity B, B ' is communicated with, servocylinder 7.1,7.2 rod chamber A, A ' is through Pilot operated check valve 4.3,4.6 with servo proportion 2.1,2.2 F, F ' mouthful links to each other, hydraulic oil is through oil-return accumulator 8.1,8.2, plug-in type one-way valve 5.1,5.2 flow back to return line L, by control servocylinder 7.1,7.2 rodless cavity and rod chamber improve servocylinder 7.1,7.2, correct the quality of steel plate to improve full-hydraulic metal sheet straightener to the speed of response of instruction.
Advantage of the present invention and good effect are:
Compare with prior art Fig. 1, the present invention has removed three-way pressure reducing valve 9, relief valve 10, Pilot operated check valve 11, normally closed Solenoid ball valve 12, back pressure accumulator 13, board-like relief valve 14, the present invention simultaneously adopts rodless cavity B, B ' and rod chamber A, the A ' of servo proportion 2.1,2.2 control servocylinders 7.1,7.2, its benefit is to improve the natural frequency of hydraulic system and the speed of response of servocylinder, such as the hydraulic system natural frequency of setting up by Fig. 1 is:
And by Fig. 2 of the present invention set up the hydraulic system natural frequency be:
As seen, the present invention is 2 times of prior art hydraulic system natural frequency.This just shows that the present invention can improve the speed of response of 7.1,7.2 pairs of instructions of servocylinder, improves the quality that full-hydraulic metal sheet straightener is corrected steel plate.In addition, hydraulic system structure of the present invention is simple, cheap, utilization is reliable.
Description of drawings
Fig. 1 is prior art hydraulic system of full-hydraulic metal sheet straightener figure
Fig. 2 is a hydraulic scheme of the present invention
Among the figure
1.1,1.2---often open Solenoid ball valve 2.1,2.2---servo proportion 3.1,3.2---electromagnetic relief valve 4.1,4.2,4.3,4.4,4.5,4.6---Pilot operated check valve 5.1,5.2---plug-in type one-way valve 6.1,6.2---high pressure accumulator 7.1,7.2---servocylinder 8.1,8.2 oil-return accumulator 9---three-way pressure reducing valve 10---relief valve 11---Pilot operated check valve 12---normally closed Solenoid ball valve 13---back pressure accumulator 14---board-like relief valve S---pressure oil pipeline L---return line Y---drain pipeline road
Embodiment
As shown in Figure 2, pressure oil from pressure oil pipeline S by often opening Solenoid ball valve 1.1,1.2 open Pilot operated check valve 4.1 earlier, 4.2,4.3,4.4,4.5,4.6, pressure oil enters into servo proportion 2.1,2.2 pressure hydraulic fluid port P, simultaneously with high pressure accumulator 6.1,6.2 connect, control servo proportion 2.1,2.2 spool action make pressure oil from servo proportion 2.1,2.2 E, E ' mouthful through Pilot operated check valve 4.2,4.5 enter servocylinder 7.1,7.2 rodless cavity B, B ', this moment servocylinder 7.1,7.2 rod chamber A, A ' is through Pilot operated check valve 4.3,4.6 with servo proportion 2.1,2.2 F, connect for F ' mouthful, F, F ' mouthful and servo proportion 2.1,2.2 oil return inlet T connect, hydraulic oil from the T mouth through oil-return accumulator 8.1,8.2, plug-in type one-way valve 5.1,5.2 flow back to return line L, servocylinder 7.1,7.2 piston rod stretch out; The spool action of control servo proportion 2.1,2.2 makes F, F ' mouthful rod chamber A, the A ' that through Pilot operated check valve 4.3,4.6 enter servocylinder 7.1,7.2 of pressure oil from servo proportion 2.1,2.2, this moment, rodless cavity B, the B ' of servocylinder 7.1,7.2 connected through E, the E ' of Pilot operated check valve 4.2,4.5 and servo proportion 2.1,2.2 mouth, E, E ' connect with the oil return inlet T of servo proportion 2.1,2.2, hydraulic oil flows back to return line L from the T mouth through oil-return accumulator 8.1,8.2, plug-in type one-way valve 5.1,5.2, the piston rod withdrawal of servocylinder 2.1,2.2.
Claims (1)
1. hydraulic system of full-hydraulic metal sheet straightener, it is characterized in that pressure oil leads up to the 1st high pressure accumulator (6.1) from pressure oil pipeline (S), the 1st often opens Solenoid ball valve (1.1), the the 1st and the 2nd Pilot operated check valve (4.1,4.2), the E mouth of the 1st servo proportion (2.1) connects the rodless cavity (B) of the 1st servocylinder (7.1), the 1st electromagnetic relief valve (3.1) is connected with the rodless cavity (B) of the 1st servocylinder (7.1) again, another road pressure oil is by the 2nd high pressure accumulator (6.2), the 2nd often opens Solenoid ball valve (1.2), the the 3rd and the 4th Pilot operated check valve (4.4,4.5), the rodless cavity of the E ' of the 2nd servo proportion (2.2) mouthful of connection the 2nd servocylinder (7.2) (B '), the 2nd electromagnetic relief valve (3.2) is connected with the rodless cavity of the 2nd servocylinder (7.2) (B ') again, the rod chamber (A) of the 1st servocylinder (7.1) links to each other through the F mouth of the 5th Pilot operated check valve (4.3) with the 1st servo proportion (2.1), the rod chamber of the 2nd servocylinder (7.2) (A ') link to each other with the F ' mouth of the 2nd servo proportion (2.2) through the 6th Pilot operated check valve (4.6), two-way fluid is respectively through oil-return accumulator (8.1,8.2), plug-in type one-way valve (5.1,5.2) flow back to return line (L).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100736550A CN101463846B (en) | 2009-01-13 | 2009-01-13 | Hydraulic system of full-hydraulic metal sheet straightener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100736550A CN101463846B (en) | 2009-01-13 | 2009-01-13 | Hydraulic system of full-hydraulic metal sheet straightener |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101463846A CN101463846A (en) | 2009-06-24 |
| CN101463846B true CN101463846B (en) | 2010-10-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100736550A Expired - Fee Related CN101463846B (en) | 2009-01-13 | 2009-01-13 | Hydraulic system of full-hydraulic metal sheet straightener |
Country Status (1)
| Country | Link |
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| CN (1) | CN101463846B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310091A (en) * | 2011-08-03 | 2012-01-11 | 中冶南方工程技术有限公司 | Back pressure system for rolling force control of flattening machine |
| CN102691680B (en) * | 2012-06-10 | 2014-07-23 | 福建南平通达机电自动化有限公司 | Energy storage tank type hydraulic control integrated device for large-flow high-pressure ball valve |
| CN104100587B (en) * | 2014-06-09 | 2016-09-07 | 烟台宝钢钢管有限责任公司 | A kind of self-correction double-cylinder hydraulic synchronizes system |
| CN105665475B (en) * | 2016-04-25 | 2017-08-15 | 太原科技大学 | A kind of slab flattens machine hydraulic system |
| CN108035921A (en) * | 2017-11-29 | 2018-05-15 | 太原科技大学 | A kind of hydraulic circuit for pumping the single rod piston cylinder of control |
| CN108343647B (en) * | 2018-01-30 | 2019-07-26 | 太原理工大学 | A kind of anti-bias load hydraulic rolling cut type metal sheet shearing machine hydraulic system |
| CN110394434B (en) * | 2019-08-06 | 2024-03-29 | 北京首钢国际工程技术有限公司 | Continuous casting billet large-reduction rolling mill reduction roll hydraulic control valve table |
| CN111251566B (en) * | 2020-02-17 | 2022-02-18 | 海天塑机集团有限公司 | High-speed high-precision injection molding machine hydraulic control loop and method |
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2009
- 2009-01-13 CN CN2009100736550A patent/CN101463846B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101463846A (en) | 2009-06-24 |
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Granted publication date: 20101027 |