CN105465079B - A kind of brake oil circuit control - Google Patents
A kind of brake oil circuit control Download PDFInfo
- Publication number
- CN105465079B CN105465079B CN201511022175.3A CN201511022175A CN105465079B CN 105465079 B CN105465079 B CN 105465079B CN 201511022175 A CN201511022175 A CN 201511022175A CN 105465079 B CN105465079 B CN 105465079B
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- China
- Prior art keywords
- valve body
- valve
- oil
- oil return
- actuator
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/82—Hydraulic or pneumatic circuits
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fluid-Pressure Circuits (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a kind of brake oil circuit control, including least one set actuator and valve body module, actuator and valve body module include actuator and valve body, actuator includes rod chamber and rodless cavity, the P oil-in of valve body connects principal pressure oil circuit, the T oil return opening of valve body connects back to oil circuit, and the A hydraulic fluid port of valve body is connected with rod chamber, and the B hydraulic fluid port of valve body is connected with rodless cavity；Being provided with proportioning valve assembly between T oil return opening and the oil return line of valve body, proportioning valve assembly includes proportioning valve, and the P oil-in of proportioning valve is connected with the T oil return opening of valve body, and A hydraulic fluid port and the T oil return opening of proportioning valve are all connected with oil return line.A kind of brake oil circuit control that the present invention provides, by Set scale valve module between T oil return opening and the oil return line of valve body, the back pressure that actuator can realize precise and stable and high response at running controls, and improves the overall stability of product and easily-controllable property.
Description
Technical field
The present invention relates to oil circuit control systems technology field of braking, particularly relate to a kind of injection mo(u)lding machinery and die cast
The brake oil circuit control of machinery.
Background technology
At present, the smelting glue back pressure of injection machine uses common counterbalance valve to be controlled, during use, and back pressure low-response and shakiness
Fixed, using effect is general；Common high-speed circuit can use servo valve that the turnover actuator port of actuator is controlled together, with
Reach accurately to control the actuator of high-speed cruising, but a servo valve can only control an actuator, and to each work
Hydraulic fluid port can only control into the same opening degree.
And in actual applications, the rod chamber of actuator is different with the oil cylinder area of rodless cavity, if rod chamber is gone out
Hydraulic fluid port turn down simultaneously can the least the oil-in of rodless cavity also pass, and rodless cavity also needs to cover substantial amounts of hydraulic pressure when slowing down
Oil, if the oil-in of rodless cavity reduces a lot, may cause rodless cavity to can not get sufficient repairing and negative pressure occur, thus affect
The stability of hydraulic control, and, now the oil-in of rodless cavity is functionally not required to reduce the most passive reduction, because of
This can cause throttling to produce energy consumption.
Summary of the invention
It is an object of the invention to propose a kind of brake oil circuit control, to solve back pressure low-response present in prior art
And unstable, using effect is general, and each actuator port can only control into the same opening degree, the execution machine to high-speed cruising
Structure is difficult to the technical problem the most steadily slowed down.
For reaching this purpose, the present invention by the following technical solutions:
A kind of brake oil circuit control, including least one set actuator and valve body module, described actuator and valve body mould
Block includes that actuator and valve body, described actuator include rod chamber and rodless cavity, and the P oil-in of described valve body connects main pressure
Power oil circuit, the T oil return opening of described valve body connects back to oil circuit, and the A hydraulic fluid port of described valve body is connected with described rod chamber, described valve body
B hydraulic fluid port is connected with described rodless cavity；
Being provided with proportioning valve assembly between T oil return opening and the described oil return line of described valve body, described proportioning valve assembly includes ratio
Example valve, the P oil-in of described proportioning valve is connected with the T oil return opening of described valve body, and A hydraulic fluid port and the T oil return opening of described proportioning valve are equal
It is connected with described oil return line；
Described valve body and described proportioning valve assembly connect control module.
Further, the piston rod of described rod chamber connects displacement transducer, institute's displacement sensors and described control
Module connects.
Further, described rod chamber and described rodless cavity are respectively connected with pressure transducer, described pressure transducer and institute
State control module to connect.
Further, described proportioning valve assembly also includes on-off valve, and the T oil return opening of described on-off valve and B hydraulic fluid port are with described
The B hydraulic fluid port of proportioning valve connects；
P oil-in and the A hydraulic fluid port of described on-off valve are connected with the T oil return opening of described valve body.
Further, described on-off valve is two-position four-way valve.
Further, including organizing described actuator and valve body module more, organize described actuator and valve body module with
Proportioning valve assembly described in one group connects；
The T oil return opening of each described valve body is connected with the P oil-in of described proportioning valve respectively.
A kind of brake oil circuit control that the present invention provides, during use, the T oil return opening of valve body connects the P oil-in of proportioning valve,
When executive module needs steadily to slow down rapidly in high-speed cruising state, passing ratio valve P oil-in reduces according to a certain percentage,
Make meter out thus produce the skid resistance of back pressure.
This brake oil circuit control, by Set scale valve module, actuator between T oil return opening and the oil return line of valve body
The back pressure that can realize precise and stable and high response at running controls, and improves the overall stability of product and easily-controllable property.
Accompanying drawing explanation
Fig. 1 is the control principle drawing of the brake oil circuit control that the embodiment of the present invention one provides；
Fig. 2 is the control principle drawing of the brake oil circuit control that the embodiment of the present invention two provides.
In figure:
1, actuator and valve body module；2, principal pressure oil circuit；3, proportioning valve assembly；4, oil return line；11, actuator；
12, valve body；111, rod chamber；112, rodless cavity；113, pressure transducer；114, displacement transducer；121, the P oil-feed of valve body
Mouthful；122, the A hydraulic fluid port of valve body；123, the B hydraulic fluid port of valve body；124, the T oil return opening of valve body；31, proportioning valve；32, on-off valve；311、
The P oil-in of proportioning valve；312, the A hydraulic fluid port of proportioning valve；313, the B hydraulic fluid port of proportioning valve；314, the T oil return opening of proportioning valve；321、
The P oil-in of on-off valve；322, the A hydraulic fluid port of on-off valve；323, the B hydraulic fluid port of on-off valve；324, the T oil return opening of on-off valve.
Detailed description of the invention
Further illustrate technical scheme below in conjunction with the accompanying drawings and by detailed description of the invention.
Embodiment one
As it is shown in figure 1, the present embodiment provides one brake oil circuit control, including one group of actuator and valve body module 1 He
One control module, actuator and valve body module 1 include actuator 11 and valve body 12, and actuator 11 includes rod chamber 111
With rodless cavity 112, the P oil-in 121 of valve body connects principal pressure oil circuit 2, and the T oil return opening 124 of valve body connects back to oil circuit 4, valve body
A hydraulic fluid port 122 be connected with rod chamber 111, the B hydraulic fluid port 123 of valve body is connected with rodless cavity 112；
Being provided with proportioning valve assembly 3 between T oil return opening 124 and the oil return line 4 of valve body, proportioning valve assembly 3 includes proportioning valve 31,
The P oil-in 311 of proportioning valve is connected with the T oil return opening 124 of valve body, and A the hydraulic fluid port 312 and T oil return opening of proportioning valve 314 is all and oil return
Road 4 connects.
Wherein, the piston rod of rod chamber 111 connects displacement transducer 114.Rod chamber 111 and rodless cavity 112 are all connected with
There is pressure transducer 113.
Control module is connected with institute displacement sensors 114, pressure transducer 113, valve body 12, proportioning valve assembly 3.
Actuator 11 can realize, at running, the operation principle that the back pressure of precise and stable and high response controls: performs
Mechanism is when high-speed cruising, and the piston rod being detected rod chamber 111 by displacement transducer 114 arrives the position of needs deceleration (in advance
First set this position), therefore, control module sends instruction, makes the P oil-in 311 of proportioning valve 31 reduce according to a certain percentage, makes
Obtaining meter out thus produce back pressure skid resistance, wherein, the ratio of reducing is preset value, during reducing, can contract continuously
Little.Meanwhile, dynamically adjusted the size of the P oil-in 311 of proportioning valve by the on-line checking of displacement transducer 114, to realize
Closed loop control.
The operation principle that the accurate back pressure of actuator 11 running controls: pressure is operationally passed through in actuator 11
Sensor 113 detection needs the target back pressure pressure controlling the rod chamber 111 of back pressure or the online pressure of rodless cavity 112 with setting
Power compares；If the pressure of on-line checking is less than the target back pressure pressure set, now control module provides instruction to make ratio
The P oil-in 311 of valve reduces according to a certain percentage, finally realizes the target back pressure pressure that the pressure infinite approach of on-line checking sets
Power；Whereas if the pressure of on-line checking is more than the target back pressure pressure set, now control module provides instruction to make proportioning valve
P oil-in 311 increase according to a certain percentage, finally realize on-line checking pressure infinite approach set target back pressure pressure
Power, finally realizes the closed loop control of the accurate back pressure of actuator assembly operating process.
In the present embodiment, proportioning valve assembly 3 also includes on-off valve 32, T oil return opening 324 and B hydraulic fluid port and the ratio of on-off valve
The B hydraulic fluid port 313 of valve connects；P the oil-in 321 and A hydraulic fluid port 322 of on-off valve is connected with the T oil return opening 124 of valve body.
The all hydraulic fluid ports realizing on-off valve when on-off valve works interconnect, i.e. the P oil-in 321 of on-off valve and B oil
Mouth 323 connection, A hydraulic fluid port 322 connects with T oil return opening 324, and now, proportioning valve 31 operationally can realize all of proportioning valve
Hydraulic fluid port interconnects, i.e. the P oil-in 311 of proportioning valve connects with A hydraulic fluid port 312, and B hydraulic fluid port 313 connects with T oil return opening 314, this
Time, not only P the oil-in 311 and A hydraulic fluid port 312 of proportioning valve has oil mass to pass through, meanwhile, and P the oil-in 321 and B hydraulic fluid port of on-off valve
B the hydraulic fluid port 313 and T oil return opening 314 of the oil mass meeting passing ratio valve that 323, A hydraulic fluid port 322 and T oil return opening 324 passes through enters oil return
Road 4, therefore, when on-off valve 32 works, the normal flow of its logical oil this latus rectum of flow-rate ratio doubles；
Meanwhile, the flow that some actuator assemblies itself need is smaller, in order to enable to play proportioning valve 31 more fully
Control accuracy, on-off valve 32 now can be made not work, i.e. the P oil-in 321 of on-off valve connects with A hydraulic fluid port 322, B hydraulic fluid port
323 connect with T oil return opening 324, thus cut off the P oil-in 311 of the proportioning valve of proportioning valve 31 and the path of B hydraulic fluid port 313, ratio
The opening change that valve 31 is identical, but flow can reduce half, so the precision controlling changes in flow rate doubles.
Preferably, on-off valve 32 is two-position four-way valve.
Embodiment two
As in figure 2 it is shown, the difference of the present embodiment and embodiment one is: the actuator of the present embodiment and valve body module 1
Having two groups, often the T oil return opening 124 of the valve body of group actuator and valve body module 1 is respectively with the P oil-in 311 of proportioning valve even
Connect.By described design, can realize controlling two groups of actuators by a proportioning valve assembly 3, reach the purpose of cost efficiency.
It will be appreciated by persons skilled in the art that in other embodiments of the invention, actuator and valve body module 1 are not limited to two
Group, it is also possible to for more than two.
What the brake oil circuit control of the present invention can reach has the beneficial effect that
1. the actuator of high-speed motion can realize the most steadily slow down, and realize accurate stop position precision and weight
Multiple precision.
2. actuator can realize precise and stable at running, and the back pressure of high response controls.
3. can use the proportioning valve of less latus rectum, reduce cost.
4. all asynchronous actuator being operated and the valve of complete machine can be controlled with one group of proportioning valve and on-off valve
Module 1, and all obtain high-accuracy energy-efficient control, overall performance is higher and cost is lower.
The know-why of the present invention is described above in association with specific embodiment.These describe and are intended merely to explain the present invention's
Principle, and limiting the scope of the invention can not be construed to by any way.Based on explanation herein, the technology of this area
Personnel need not pay performing creative labour can associate other detailed description of the invention of the present invention, and these modes fall within
Within protection scope of the present invention.
Claims (6)
1. a brake oil circuit control, it is characterised in that include least one set actuator and valve body module (1), described execution
Mechanism and valve body module (1) include actuator (11) and valve body (12), described actuator (11) include rod chamber (111) and
Rodless cavity (112), the P oil-in (121) of described valve body connects principal pressure oil circuit (2), and the T oil return opening (124) of described valve body is even
Taking back oil circuit (4), the A hydraulic fluid port (122) of described valve body is connected with described rod chamber (111), the B hydraulic fluid port (123) of described valve body with
Described rodless cavity (112) connects；
It is provided with proportioning valve assembly (3), described proportioning valve assembly between T oil return opening (124) and the described oil return line (4) of described valve body
(3) including proportioning valve (31), the P oil-in (311) of described proportioning valve is connected with the T oil return opening (124) of described valve body, described ratio
A hydraulic fluid port (312) and the T oil return opening (314) of example valve are all connected with described oil return line (4)；
Described valve body (12) and described proportioning valve assembly (3) connect control module.
Brake oil circuit control the most according to claim 1, it is characterised in that the piston rod of described rod chamber (111) connects
Displacement transducer (114), institute's displacement sensors (114) is had to be connected with described control module.
Brake oil circuit control the most according to claim 2, it is characterised in that described rod chamber (111) and described rodless cavity
(112) being respectively connected with pressure transducer (113), described pressure transducer (113) is connected with described control module.
4. according to the brake oil circuit control described in any one of claim 1-3, it is characterised in that described proportioning valve assembly (3) is also
B hydraulic fluid port (313) including on-off valve (32), the T oil return opening (324) of described on-off valve and B hydraulic fluid port (323) with described proportioning valve connects
Connect；
P oil-in (321) and the A hydraulic fluid port (322) of described on-off valve are connected with the T oil return opening (124) of described valve body.
Brake oil circuit control the most according to claim 4, it is characterised in that described on-off valve (32) is two-position four-way valve.
6. according to the brake oil circuit control described in any one of claim 1-3, it is characterised in that include organizing described actuator more
And valve body module (1), the described actuator of many groups and valve body module (1) are connected with proportioning valve assembly (3) described in a group；
The T oil return opening (124) of each described valve body is connected with the P oil-in (311) of described proportioning valve respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511022175.3A CN105465079B (en) | 2015-12-29 | 2015-12-29 | A kind of brake oil circuit control |
| PCT/CN2016/112846 WO2017114442A1 (en) | 2015-12-29 | 2016-12-29 | Brake control oil circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511022175.3A CN105465079B (en) | 2015-12-29 | 2015-12-29 | A kind of brake oil circuit control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105465079A CN105465079A (en) | 2016-04-06 |
| CN105465079B true CN105465079B (en) | 2016-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511022175.3A Active CN105465079B (en) | 2015-12-29 | 2015-12-29 | A kind of brake oil circuit control |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105465079B (en) |
| WO (1) | WO2017114442A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465079B (en) * | 2015-12-29 | 2016-12-28 | 博创智能装备股份有限公司 | A kind of brake oil circuit control |
| CN110821921A (en) * | 2019-09-09 | 2020-02-21 | 中国重型机械研究院股份公司 | Hydraulic centering system and centering method for uncoiler of rolling mill |
| CN113290805B (en) * | 2021-04-09 | 2022-11-15 | 宁波伊士通技术股份有限公司 | Back pressure control method of hydraulic injection molding machine |
| CN114311575B (en) * | 2021-12-30 | 2024-03-29 | 阿托斯(上海)液压有限公司 | Injection molding machine back pressure control device and method based on double closed-loop PID regulation |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3447605C1 (en) * | 1984-12-28 | 1986-05-07 | Karl 7298 Loßburg Hehl | Hydraulic device for the injection molding unit of a plastic injection molding machine |
| JPH07115393B2 (en) * | 1992-09-29 | 1995-12-13 | 日精樹脂工業株式会社 | Method of shortening injection start time in injection speed control |
| JP3606976B2 (en) * | 1995-12-26 | 2005-01-05 | 日立建機株式会社 | Hydraulic control system for hydraulic working machine |
| CN2353509Y (en) * | 1998-03-13 | 1999-12-15 | 深圳犀利电子机械有限公司 | Injection moulding machine with double compound cylinders for plastic-injection and control oil-path |
| CN1282536C (en) * | 2002-08-06 | 2006-11-01 | 宁波海天集团股份有限公司 | Preinjection, injection hydraulic return passage of injection machine |
| CN101269539B (en) * | 2008-05-07 | 2010-08-04 | 富强鑫（宁波）机器制造有限公司 | Regulation device for smelting glue back pressure set of plastic rubber ejection shaping apparatus |
| CN202165551U (en) * | 2011-08-10 | 2012-03-14 | 姜国峰 | Hydraulic motor with brake module and speed reducer |
| DE102012218427A1 (en) * | 2012-10-10 | 2014-04-10 | Robert Bosch Gmbh | Hydraulic control arrangement for use in hydraulic drive of mini excavator, has outlet flow path formed from first working port to pressure medium sink and located above control throttle, and pressure unit placed above hydro pump |
| MX357664B (en) * | 2012-10-19 | 2018-07-18 | Hema Enduestri Anonim Sirketi | System preventing pressured oil leakage to cylinder line in control valve systems with flow divider. |
| CN203488468U (en) * | 2013-09-04 | 2014-03-19 | 浙江陀曼精密机械有限公司 | Duplex-pump hydraulic system of hydraulic lathe |
| CN204533014U (en) * | 2015-03-04 | 2015-08-05 | 无锡市钻通工程机械有限公司 | Ioad-sensing control hydraulic system |
| CN205315375U (en) * | 2015-12-29 | 2016-06-15 | 博创智能装备股份有限公司 | Brake control circuit |
| CN105465079B (en) * | 2015-12-29 | 2016-12-28 | 博创智能装备股份有限公司 | A kind of brake oil circuit control |
-
2015
- 2015-12-29 CN CN201511022175.3A patent/CN105465079B/en active Active
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2016
- 2016-12-29 WO PCT/CN2016/112846 patent/WO2017114442A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN105465079A (en) | 2016-04-06 |
| WO2017114442A1 (en) | 2017-07-06 |
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Effective date of registration: 20180209 Address after: 511340 Guangzhou Province, Zengcheng City automobile industry base, Cheung Road, No. 9 Patentee after: BORCH MACHINERY CO., LTD. Address before: 511340 Guangzhou Province, Zengcheng City automobile industry base, Cheung Road, No. 9 Co-patentee before: Ye Tingbi Patentee before: BORCH MACHINERY CO., LTD. |
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