CN105015020A - Closed-loop pressure regulation control system for four corners of hydraulic die cushions and pressure regulation control method - Google Patents
Closed-loop pressure regulation control system for four corners of hydraulic die cushions and pressure regulation control method Download PDFInfo
- Publication number
- CN105015020A CN105015020A CN201510431906.3A CN201510431906A CN105015020A CN 105015020 A CN105015020 A CN 105015020A CN 201510431906 A CN201510431906 A CN 201510431906A CN 105015020 A CN105015020 A CN 105015020A
- Authority
- CN
- China
- Prior art keywords
- hydraulic die
- die cushion
- hydraulic
- valve
- pressure
- 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.)
- Pending
Links
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a closed-loop pressure regulation control system for four corners of hydraulic die cushions and a pressure regulation control method. The system comprises hydraulic die cushion oil cylinders, wherein the hydraulic die cushion oil cylinders are used for driving the hydraulic die cushions to move in the vertical direction; the hydraulic die cushion oil cylinders comprise four plunger type cylinders and a piston cylinder, the plunger type cylinders are positioned in the four corners of the hydraulic die cushion, and the piston cylinder is positioned in the middle of the hydraulic die cushion; each plunger type cylinder comprises a group of valve block controlling devices, each group of valve block controlling devices comprises an electromagnetic reversing valve, a safety valve, a high-frequency-response proportional servo valve and a prefill valve, which are sequentially connected through a hydraulic pipeline, and one pressure sensor is mounted on the hydraulic pipeline. The technical scheme of the system lies in that the four plunger type cylinders are positioned in the four corners of the hydraulic die cushion, one plunger type cylinder is independently controlled by one group of valve block devices, power sources are provided by a pump set for four groups of the valve block devices, the oil cylinder controlling valve block devices of each corner perform pressure control through the high-frequency-response proportional servo valve, real-time feedback of the pressure is achieved and pressure is accurately controlled through electrical procedures, so that the accurate control of the pressure of the four corners is realized, and accuracy requirements of forming pressure of complex accurate parts are satisfied.
Description
Technical field
The present invention relates to hydraulic press system technical field, particularly relate to a kind of hydraulic die cushion corner closed loop voltage control system and Regulation Control method.
Background technology
Along with the continuous progress of China's processing manufacturing industry, there is various complexity, precision component, thus higher requirement is proposed to the hydraulic press of production.Especially need hydraulic die cushion to participate in shaping part, traditional Regulation Control mode and control accuracy can not meet the shaping requirement of machine parts'precise, so develop a kind of hydraulic die cushion corner closed loop voltage-regulating technique.Meet complicated, that precision component is shaping pressure accurately to control.Meet the processing needs of complexity, precision component now, promote the serviceability of hydraulic press.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of hydraulic die cushion corner closed loop voltage control system and Regulation Control method; This system can realize the high accurancy and precision regulation and control to hydraulic die cushion.
The technical scheme that the present invention takes for the technical problem existed in solution known technology is:
A kind of hydraulic die cushion corner closed loop voltage control system, comprises the hydraulic cushion cylinder driving the motion of hydraulic die cushion in the vertical direction; Described hydraulic cushion cylinder comprises and is positioned at the piston cylinder that four plunger cases on hydraulic die cushion four angles and are positioned at hydraulic die cushion center; Each plunger case comprises a sleeving valve block control device; Every sleeving valve block control device comprises the solenoid directional control valve, safety valve, high frequency corresponding proportion servo valve and the prefill valve that are connected successively by fluid pressure line; Described fluid pressure line is provided with pressure sensor.
A Regulation Control method for hydraulic die cushion corner closed loop voltage control system, comprises the steps:
Step one, described piston cylinder drive the motion of hydraulic die cushion in the vertical direction;
Step 2, described four plunger cases are under the control of respective valve block control device, and finely tune the support force that hydraulic die cushion four angles receive, detailed process is:
First four plunger cases under the control of respective valve block control device with hydraulic die cushion lower surface close contact;
Pressure sensor detects the oil pressure in fluid pressure line subsequently;
Finally the oil pressure value detected and desired value are compared, if the oil pressure value detected equals desired value, then keep the state of first plunger case, if the oil pressure value detected is greater than desired value, then need to carry out pressure release; If the oil pressure value detected is less than desired value, then need to carry out supercharging.
The advantage that the present invention has and good effect are:
By adopting technique scheme, technical scheme in the present invention comprises five cylinders (being positioned at the piston cylinder that four plunger cases on hydraulic die cushion four angles and are positioned at hydraulic die cushion center), owing to being provided with four plunger cases in hydraulic die cushion corner, each plunger case is controlled by an independent sleeving valve block, and four sleeving valve blocks provide power source by a set of pump group.The ram control valve block at each angle adopts high frequency sound proportional servo valve controlled pressure, and pressure Real-time Feedback, is accurately controlled by electric program, therefore reaches the accurate control of corner pressure, thus meets briquetting pressure required precision that is complicated, precision component.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the preferred embodiment of the present invention;
Wherein: 1, solenoid directional control valve; 2, safety valve; 3, high frequency corresponding proportion servo valve; 4, pressure sensor; 5, prefill valve; 6, hydraulic cushion cylinder.
Detailed description of the invention
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, a kind of hydraulic die cushion corner closed loop voltage control system, comprise the hydraulic cushion cylinder 6 driving the motion of hydraulic die cushion in the vertical direction; Described hydraulic cushion cylinder 6 comprises and is positioned at the piston cylinder that four plunger cases on hydraulic die cushion four angles and are positioned at hydraulic die cushion center; Each plunger case comprises a sleeving valve block control device; Every sleeving valve block control device comprises the solenoid directional control valve 1, safety valve 2, high frequency corresponding proportion servo valve 3 and the prefill valve 5 that are connected successively by fluid pressure line; Described fluid pressure line is provided with pressure sensor 4.
A Regulation Control method for hydraulic die cushion corner closed loop voltage control system, comprises the steps:
Step one, described piston cylinder drive the motion of hydraulic die cushion in the vertical direction;
Step 2, described four plunger cases are under the control of respective valve block control device, and finely tune the support force that hydraulic die cushion four angles receive, detailed process is:
First four plunger cases under the control of respective valve block control device with hydraulic die cushion lower surface close contact;
Pressure sensor detects the oil pressure in fluid pressure line subsequently;
Finally the oil pressure value detected and desired value are compared, if the oil pressure value detected equals desired value, then keep the state of first plunger case, if the oil pressure value detected is greater than desired value, then need to carry out pressure release; If the oil pressure value detected is less than desired value, then need to carry out supercharging.
In above-mentioned specific embodiment, every sleeving valve block control device comprises the pressure sensor shown for switching unloaded solenoid directional control valve, the overflow valve of a safety effect, the high frequency sound proportional servo valve playing the accurate control action of pressure and pressure.Oil cylinder working-pressure is commutated by the high speed of electric programme-control high frequency sound proportional servo valve, is fed back by real-time pressure, adjustment commutation direction, thus reaches the control of PID high accuracy.Make oil cylinder working-pressure accurate, stable control to preset pressure, thus meet briquetting pressure required precision that is complicated, precision component.
Above embodiments of the invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (2)
1. a hydraulic die cushion corner closed loop voltage control system, comprises the hydraulic cushion cylinder driving the motion of hydraulic die cushion in the vertical direction; It is characterized in that: described hydraulic cushion cylinder comprises and is positioned at the piston cylinder that four plunger cases on hydraulic die cushion four angles and are positioned at hydraulic die cushion center; Each plunger case comprises a sleeving valve block control device; Every sleeving valve block control device comprises the solenoid directional control valve, safety valve, high frequency corresponding proportion servo valve and the prefill valve that are connected successively by fluid pressure line; Described fluid pressure line is provided with pressure sensor.
2. the Regulation Control method of hydraulic die cushion corner closed loop voltage control system as described in right 1, is characterized in that, comprise the steps:
Step one, described piston cylinder drive the motion of hydraulic die cushion in the vertical direction;
Step 2, described four plunger cases are under the control of respective valve block control device, and finely tune the support force that hydraulic die cushion four angles receive, detailed process is:
First four plunger cases under the control of respective valve block control device with hydraulic die cushion lower surface close contact;
Pressure sensor detects the oil pressure in fluid pressure line subsequently;
Finally the oil pressure value detected and desired value are compared, if the oil pressure value detected equals desired value, then keep the state of first plunger case, if the oil pressure value detected is greater than desired value, then need to carry out pressure release; If the oil pressure value detected is less than desired value, then need to carry out supercharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510431906.3A CN105015020A (en) | 2015-07-21 | 2015-07-21 | Closed-loop pressure regulation control system for four corners of hydraulic die cushions and pressure regulation control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510431906.3A CN105015020A (en) | 2015-07-21 | 2015-07-21 | Closed-loop pressure regulation control system for four corners of hydraulic die cushions and pressure regulation control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105015020A true CN105015020A (en) | 2015-11-04 |
Family
ID=54405480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510431906.3A Pending CN105015020A (en) | 2015-07-21 | 2015-07-21 | Closed-loop pressure regulation control system for four corners of hydraulic die cushions and pressure regulation control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105015020A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107442635A (en) * | 2017-08-10 | 2017-12-08 | 湖州机床厂有限公司 | A kind of multi-functional composite hydraulic system of multiple hydraulic transfer press hydraulic die cushion |
| CN107477312A (en) * | 2017-08-31 | 2017-12-15 | 覃子衍 | A kind of hydraulic die cushion |
| CN113400710A (en) * | 2021-04-30 | 2021-09-17 | 天津市天锻压力机有限公司 | Four-axis servo hydraulic cushion special for high-precision die testing hydraulic machine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0596696A1 (en) * | 1992-11-05 | 1994-05-11 | Toyota Jidosha Kabushiki Kaisha | Method and device for controlling, checking or optimizing pressure of cushion pin cylinders of press by discharging fluid or initial pressure |
| EP0740968A1 (en) * | 1995-05-01 | 1996-11-06 | Toyota Jidosha Kabushiki Kaisha | Pressing method and system wherein cushion pin load is detected by load detector for diagnosis for even distribution of blank holding force |
| JPH09225698A (en) * | 1996-02-26 | 1997-09-02 | Aida Eng Ltd | Pneumatic pressure control device of press machine |
| CN101758642A (en) * | 2009-11-19 | 2010-06-30 | 天津市天锻压力机有限公司 | Four corner pressure regulating device of lower hydraulic cushion on hydraulic machine |
| CN202923012U (en) * | 2012-11-07 | 2013-05-08 | 南通锻压设备股份有限公司 | Rapid ejection structure of hydraulic cushion |
| CN203210733U (en) * | 2013-03-26 | 2013-09-25 | 大连元利流体技术有限公司 | Overload protection system |
| CN203623020U (en) * | 2013-11-17 | 2014-06-04 | 苏州蓝王机床工具科技有限公司 | Structure of hydraulic press ejection mechanism |
| CN203864063U (en) * | 2014-05-22 | 2014-10-08 | 南昌工程学院 | Hydraulic cushion of hydraulic machine |
-
2015
- 2015-07-21 CN CN201510431906.3A patent/CN105015020A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0596696A1 (en) * | 1992-11-05 | 1994-05-11 | Toyota Jidosha Kabushiki Kaisha | Method and device for controlling, checking or optimizing pressure of cushion pin cylinders of press by discharging fluid or initial pressure |
| EP0740968A1 (en) * | 1995-05-01 | 1996-11-06 | Toyota Jidosha Kabushiki Kaisha | Pressing method and system wherein cushion pin load is detected by load detector for diagnosis for even distribution of blank holding force |
| JPH09225698A (en) * | 1996-02-26 | 1997-09-02 | Aida Eng Ltd | Pneumatic pressure control device of press machine |
| CN101758642A (en) * | 2009-11-19 | 2010-06-30 | 天津市天锻压力机有限公司 | Four corner pressure regulating device of lower hydraulic cushion on hydraulic machine |
| CN202923012U (en) * | 2012-11-07 | 2013-05-08 | 南通锻压设备股份有限公司 | Rapid ejection structure of hydraulic cushion |
| CN203210733U (en) * | 2013-03-26 | 2013-09-25 | 大连元利流体技术有限公司 | Overload protection system |
| CN203623020U (en) * | 2013-11-17 | 2014-06-04 | 苏州蓝王机床工具科技有限公司 | Structure of hydraulic press ejection mechanism |
| CN203864063U (en) * | 2014-05-22 | 2014-10-08 | 南昌工程学院 | Hydraulic cushion of hydraulic machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107442635A (en) * | 2017-08-10 | 2017-12-08 | 湖州机床厂有限公司 | A kind of multi-functional composite hydraulic system of multiple hydraulic transfer press hydraulic die cushion |
| CN107477312A (en) * | 2017-08-31 | 2017-12-15 | 覃子衍 | A kind of hydraulic die cushion |
| CN113400710A (en) * | 2021-04-30 | 2021-09-17 | 天津市天锻压力机有限公司 | Four-axis servo hydraulic cushion special for high-precision die testing hydraulic machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105015020A (en) | Closed-loop pressure regulation control system for four corners of hydraulic die cushions and pressure regulation control method | |
| CN109732024B (en) | Hydraulic horizontal forging machine control system and method capable of selecting forming station | |
| CN103334973A (en) | Synchronizing system for multiple hydraulic cylinders and control method for synchronizing system for multiple hydraulic cylinders | |
| CN104874662A (en) | Magnetic medium damping type special-shaped plate forming device and magnetic medium damping type special-shaped plate forming method | |
| CN109332686B (en) | Floating forming electrohydraulic control system and control method of titanium electrode hydraulic press | |
| CN1891371A (en) | Die cushion mechanism, and device and method for controlling the same | |
| CN101927401A (en) | Welder device and sliding table control method | |
| CN104085036B (en) | A kind of double-deck pressing hydraulic machine and drawing method thereof | |
| CN106640857A (en) | Stamping servo compensation system and working process thereof | |
| CN109203556B (en) | Passive electrohydraulic leveling system of hydraulic press | |
| CN104786457A (en) | Controller for injection molding machine having function of reducing synchronous error | |
| CN103785736B (en) | A kind of device of thin plate microsecond delay | |
| CN105415745A (en) | Pressure control system for large superplastic forming and diffusion bonding hydraulic machine | |
| CN105522749A (en) | Sub-manifold block with adjustable pressing speed of hydraulic machine and speed adjusting method | |
| CN104001762B (en) | Flexibility compensation method for large-scale bending machine die | |
| CN108255209B (en) | Bending machine control method and system | |
| CN108215106B (en) | Oil cylinder overshoot control method and injection mold | |
| CN106424717A (en) | Rare-earth powder high-pressure forming system | |
| CN206122694U (en) | Tombarthite powder high pressure molding system | |
| CN113478883B (en) | Electromagnetic stamping method and device | |
| CN112776413B (en) | Position pressure hybrid optimization control method of servo press | |
| CN203450702U (en) | Transmission machine with automatic hydraulic corrector | |
| CN106180338B (en) | It is a kind of that there are two multifunction hydraulic stamping systems and application method to auxiliary power | |
| US11684967B2 (en) | Rotational symmetrical and non-symmetrical plastic forming machine | |
| CN112775198A (en) | Hydraulic servo control system of skin stretcher bracket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151104 |
|
| RJ01 | Rejection of invention patent application after publication |