CN103292004B - The fast forging control valve device of hydraulic forging press - Google Patents
The fast forging control valve device of hydraulic forging press Download PDFInfo
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- CN103292004B CN103292004B CN201310193485.6A CN201310193485A CN103292004B CN 103292004 B CN103292004 B CN 103292004B CN 201310193485 A CN201310193485 A CN 201310193485A CN 103292004 B CN103292004 B CN 103292004B
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Abstract
The invention discloses a kind of fast forging control valve devices of hydraulic forging press,The device includes the proportional throttle valve of the area of the control mouth hydraulic oil circulation of changeable oil outlet/first,By the plug-in power stage main valve of proportional throttle valve control pressure,Measurement module,Proportion electro-magnet and control module,After input pressure setting value,The present apparatus is according to pressure set points,The displacement of proportion electro-magnet is controlled by control module,To control the area of the control mouth hydraulic oil circulation of change oil outlet/first,Change the pressure of variable throttle valve internal cavity,Change the position of the main valve plug of plug-in power stage main valve in turn to adjust the pressure of the hydraulic system of hydraulic press,Change the area of the control mouth hydraulic oil circulation of oil outlet/first by the value of feedback value of feedback amendment that measurement module inputs simultaneously,Obtain the oil pressure load for meeting process requirements and unloading curve,Reduce the artificial influence for adjusting factor,The oscillation intensity for hydraulic system and hydraulic pressure fuselage for reducing hydraulic shock and bringing therewith,Be conducive to improve forging times and control accuracy；Energy benefits are high, and dynamic control effect is good.
Description
Technical field
The present invention relates to a kind of fast forging control valve devices；Specifically, being a kind of fast forging valve applied to hydraulic forging press
Control device.
Background technology
With the rapid development of rolling metal industry, the requirement for hydraulic forging press is also higher and higher, such as open die forging
Liquid making press, tonnage can reach tons up to ten thousand, therefore, for large-scale hydraulic forging press, not only require that pressure tonnage is big, work speed
Degree is high, operation is accurate and steady, also requires it in higher forging number, and hydraulic system is in high-pressure high-flow, working cycles time
It, being capable of long-term safety, normal, steady operation under the higher state of number.
Existing hydraulic forging press is often used conventional release valve group to complete the release work of hydraulic forging press.
A kind of hydraulic schematic diagram of typical conventional release valve group is illustrated in Fig. 1.As shown in Figure 1, the routine pressure-relief valve
Group is a kind of three-level logic control release valve group, and the direction of hydraulic fluid flow rate is controlled by directional control valve, passes through throttle valve
Come control inserted valve unlatching and closing pressure.Since the valve group is mode switching control, the oil cylinder pressure of valve group connection
Fluctuation is larger, and system pressure impact is larger, and debugging is difficult, and trouble shooting is more complicated, cannot be satisfied the upper of hydraulic forging press
State actual demand.
Invention content
The purpose of the present invention and is provided a kind of applied to hydraulic forging press to solve the drawbacks described above of the prior art
Fast forging control valve device.
The technical scheme is that：
A kind of fast forging control valve device of hydraulic forging press, which is characterized in that including：
Proportional throttle valve, including one end open and the internal valve pocket with cavity and the ratio for being installed on valve pocket open end
Electromagnet；The cavity includes cavity body, and oil outlet/the first of the proportional throttle valve is communicated on the side wall of cavity body
Control mouth；The proportion electro-magnet includes magnet control unit, pilot valve and spring, the magnet control unit
It is fixedly installed in valve pocket one end, the pilot valve is located in cavity body, and the shape and size of pilot valve fit in cavity
Main body, pilot valve and magnet control unit driving pilot valve slide displacement in the cavity body, change oil outlet/
The area of first control mouth hydraulic oil circulation；The spring is connected to the pilot valve and rebounds back initially for pilot valve
Position；
Plug-in power stage main valve；
Measurement module；
Control module, include the input unit being electrically connected with measuring device, arithmetic element and with the ratio electromagnetism
The output unit of ferroelectricity connection, the feedback signal of the input unit access measurement module simultaneously send out input to arithmetic element
Value after the arithmetic element is compared operation according to the input value of pressure set points and input unit, is sent out to output unit
Go out instruction, output unit is according to instruction output for controlling the proportion electro-magnet displacement one end open and internal having cavity
Signal.
Preferably, control valve device is forged soon according to claim 1, it is characterised in that：The valve pocket further includes having one
The valve pocket protruding portion that side is connected to the oil outlet, valve pocket protruding portion inside have narrow slot；The narrow slot and cavity body side wall
Junction formed throttling seamed edge；The pilot valve slide displacement changes the hydraulic oil of the narrow slot with the throttling seamed edge
Circulation area.User can no longer depend on institute completely when needing to adjust the displacement of pilot valve of proportion electro-magnet as a result,
The size for stating the internal diameter of oil outlet, to adjust the displacement of pilot valve, and can be by the way that valve pocket protruding portion is arranged, to choose narrow slot
Suitable adjustable range；In this way, the adjusting leeway bigger of the displacement of the pilot valve of proportion electro-magnet is adjusted, it can be by more smart
The displacement for going control pilot valve accurately, to control the pressure of the proportional throttle valve.
Preferably, the plug-in power stage main valve includes main valve body, and the main valve plug being plugged in main valve body, described
Include the first main hydraulic fluid port being connected to the oil inlet pipe in the hydraulic system of the hydraulic forging press and the forging on main valve body
Second main hydraulic fluid port of the oil return pipe connection in the hydraulic system of hydraulic press, and be connected to the cavity body of the proportional throttle valve
The second control mouth；Described main valve plug one end is close to the second control mouth, and the area of the main valve plug end is much larger than the second control
The internal diameter of donsole；The other end of the main valve plug is butted on the described first main oil port, and the main valve plug end area is slightly larger than first
The internal diameter of main hydraulic fluid port.Main valve body can adjust the displacement of the main valve plug according to the pressure of the proportional throttle valve as a result, to
Control the flow of hydraulic system.
Further, the measurement module includes being installed on main valve plug and the main valve plug position for measuring main valve plug displacement
Displacement sensor, be installed on fluid pressure line for measure the hydraulic forging press master cylinder pressure force value first pressure sensor and
Second pressure sensor for measuring the hydraulic forging press kicker cylinder pressure value.The control module can be according to institute as a result,
Main valve plug displacement sensor, first pressure sensor, the value of feedback of second pressure sensor input are stated to judge whether forge valve soon
It is adjusted in place.
Further, the measurement module further includes being installed on pilot valve and the elder generation for measuring pilot valve displacement
Guide valve core displacement sensor.The measured value of pilot valve displacement can be fed back to control module by measurement module as a result, forge valve soon
The control accuracy of control device is more preferable.
Accordingly, with respect to the prior art, the invention has the advantages that：This fast forging control valve device can be according to hydraulic pressure
The actual demand of machine forging, controls the displacement of proportion electro-magnet in the control module, to pass through the guide of connection fixed thereto
The displacement of spool controls the area of the control mouth hydraulic oil circulation of oil outlet/first, while passing through the displacement that measurement module inputs
Value of feedback and pressure feedback value correct the area of the control mouth hydraulic oil circulation of oil outlet/first, you can acquisition can meet technique
The oil pressure of demand loads and unloading curve；The device substantially eliminates the artificial influence for adjusting factor, effectively reduces hydraulic pressure
Impact and the oscillation intensity for hydraulic system and hydraulic pressure fuselage brought therewith, at the same be also beneficial to improve forging times with
Control accuracy；The control flow of plug-in power stage main valve is exported back to proportional throttle valve, therefore proportional throttle valve is also simultaneously
Output flow；The position of main valve plug is by the closed-loop system control being made of control module, measurement module and proportion electro-magnet
System, the dynamic control effect for forging valve soon are good.
Description of the drawings
Fig. 1 is a kind of hydraulic schematic diagram of typical conventional release valve group；
The structure diagram of Fig. 2 present invention；
Fig. 3 is the structural schematic diagram of the proportional throttle valve and plug-in power stage main valve in the device of the invention；
Fig. 4 is a kind of hydraulic forging press using the present invention, using Hydraulic System Simulation software AMESIM, is forged to this kind
Hydraulic press carries out analogue simulation, simulates when hydraulic press generates displacement, hydraulic press master cylinder pressure and return pressure
Unloading curve.
In figure：
1, proportional throttle valve；101, cavity；1011, cavity body；1012, narrow slot；102, valve pocket；1021, valve pocket protrudes
Portion；104, throttle seamed edge；105, oil outlet；106, the first control mouth；110, proportion electro-magnet；1101, magnet control unit；
1102, pilot valve；1103, spring；
2, plug-in power stage main valve；201, main valve body；2011, the first main hydraulic fluid port；2012, the second main hydraulic fluid port；2013,
Two control mouths；202, main valve plug；
3, measurement module；301, main valve plug displacement sensor；302, first pressure sensor；303, second pressure senses
Device；304, pilot valve displacement sensor；
5, control module；501, input unit；502, arithmetic element；503, output unit.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, is integrally connected, may be a detachable connection；It can be with
It is mechanical connection or electrical connection, can also be the connection inside two elements；It can be directly connected, intermediate matchmaker can also be passed through
Jie is indirectly connected, and for the ordinary skill in the art, can understand that the specific of above-mentioned term contains as the case may be
Justice.
It should be noted that unless otherwise clearly defined and limited, term " first ", " second " etc., which do not represent sequence, pacifies
Dress, does not represent the importance of described element yet.
Below with reference to the accompanying drawings it and enumerates following embodiment and carrys out detailed description of the present invention and forge control valve device soon：
It please refers to Fig.2 to Fig. 3, a kind of fast forging control valve device of hydraulic forging press, including：
Proportional throttle valve 1, including one end open and with cavity 101 valve pocket 102 and with 102 matched ratio of valve pocket
Example electromagnet 110；The cavity 101 includes cavity body 1011, and the ratio section is communicated on the side wall of cavity body 1011
Flow 105/ first control mouth 106 of oil outlet of valve 1；The proportion electro-magnet 110 includes magnet control unit 1101, guide
Spool 1102 and spring 1103, the magnet control unit 1101 are fixedly installed in 102 one end of valve pocket, pilot valve 1102
In cavity body 1011, the shape and size of pilot valve 1102 fit in cavity body 1011, magnet control unit
The 1101 driving slide displacements in cavity body 1011 of pilot valve 1102, change 105/ first control mouth of oil outlet, 106 hydraulic pressure
The logical area of oil stream；Spring 1103 is connected to the pilot valve 1102 and rebounds back initial position for pilot valve 1102；
The location of when initial position 5 non-output signal of module in order to control, pilot valve 1102 do not generate displacement.
Plug-in power stage main valve 2；
Measurement module 3；
Control module 5, include the input unit 501 being electrically connected with measuring device 3, arithmetic element 502 and with it is described
Proportion electro-magnet 110 be electrically connected output unit 503, the input unit 501 access measurement module 3 feedback signal and to
Arithmetic element 502 sends out input value, the arithmetic element 502 according to pressure set points and the input value of input unit 501 into
After row comparison operation, instruction is sent out to output unit 503, output unit 503 is according to instruction output for controlling the ratio electricity
The signal of 110 displacement of magnet.
Referring to FIG. 3, the valve pocket 102 further includes the valve pocket protruding portion 1021 for having side to be connected to the oil outlet 105,
There is 1021 inside of valve pocket protruding portion narrow slot 1012, the narrow slot 1012 and the junction of 1011 side wall of cavity body to form throttling
Seamed edge 104；1102 slide displacement of the pilot valve changes the hydraulic oil circulating face of narrow slot 1012 with the throttling seamed edge 104
Product.
Referring to FIG. 3, the plug-in power stage main valve 2 includes main valve body 201, and it is plugged in main valve body 201
Main valve plug 202 includes first be connected to the oil inlet pipe in the hydraulic system of the hydraulic forging press on the main valve body 201
Main hydraulic fluid port 2011, the second main hydraulic fluid port 2012 being connected to the oil return pipe in the hydraulic system of the hydraulic forging press, and with institute
State the second control mouth 2013 that the cavity body 2011 of proportional throttle valve 1 is connected to；201 one end of the main valve plug is close to the second control
Mouth 2013, and the area of 201 end of main valve plug is much larger than the internal diameter of the second control mouth 2013；The main valve plug 202 it is another
One end is butted at the described first main hydraulic fluid port 2011, and the end area of main valve plug 202 is slightly larger than the internal diameter of the first main hydraulic fluid port 2011.
Referring to FIG. 2, measurement module 3, including it is installed on main valve plug 202 and the master for measuring 202 displacement of main valve plug
Valve core displacement sensor 301 is installed on the first pressure for measuring the hydraulic forging press master cylinder pressure force value of fluid pressure line
Sensor 302 and second pressure sensor 303 for measuring the hydraulic forging press kicker cylinder pressure value.
Referring to FIG. 2, further, the measurement module 3 further includes being installed on pilot valve 103 and for measuring guide
The pilot valve displacement sensor 304 of 103 displacement of spool.
It please refers to Fig.2 and Fig. 3, work application method of the invention is：First, user's needs are forged according to hydraulic press
Actual demand, input pressure setting value, fast forging control valve device of the invention are set according to the pressure for being input to control module 5
Value controls the displacement of proportion electro-magnet 110 from control module 5 to 110 output signal of proportion electro-magnet, to control oil outlet
The area of 105/ first control mouth, 106 hydraulic oil circulation, to change the pressure of 1 internal cavity 101 of proportional throttle valve, cavity 101
The variation of pressure is so that pass through the pressure change for the main valve plug 202 that control mouth is connected to cavity 101, to which main valve plug 202 is being inserted
The position of dress formula power stage main valve 2 changes the flow of the first main hydraulic fluid port 2011 and the second main hydraulic fluid port 2012, while by that will survey
Amount module 3 inputs to the Displacement Feedback value of control module 5 and after pressure feedback value is compared judgement with pressure set points, controls
Molding block 5 controls the displacement of proportion electro-magnet 110 to 110 output signal of proportion electro-magnet, corrects oil outlet 105/ first and controls
The area of mouth 106 hydraulic oil circulation, you can obtain the oil pressure load that can meet process requirements and unloading curve.
A kind of hydraulic forging press of typical fast forging control valve device using the present invention, the forging compound are illustrated in Fig. 4
The performance parameter of press is：Nominal pressure is 100MN, and cylinder diameter is 3* φ 1200mm, reverberation matrix method 11.6MN, liquid maximum working pressure
Power is 29.5MPa, master slider stroke 2800mm, master slider downstream rate 200mm/s, master slider opening speed 200mm/s, main cunning
Block operating rate is 80mm/s.Analogue simulation is carried out to this kind of hydraulic forging press using Hydraulic System Simulation software AMESIM, and
Obtain the fast forging valve Unloading curve figure of relationship between slider displacement amount and master cylinder pressure and return pressure, y indicates hydraulic pressure in figure
Machine slider displacement, PaIndicate master cylinder pressure, PbIndicate return pressure.From fig. 4, it can be seen that within the period of about 0-2.5S, using this hair
Bright hydraulic forging press remains static, and return pressure remains about 12MPa, and hydraulic press master cylinder only has circulating pressure；
In the period of about 2.5S-3S, the sliding block fast downlink of hydraulic forging press, hydraulic press master cylinder pressure held stationary；About 3S-4S's
In period, under slider of hydraulic press pressurization is slow, master cylinder pressure quickly ramps to operating pressure, and master cylinder pressure non-overshoot amount does not have
There is impact vibration；The quick ramp down of return pressure, non-overshoot amount, without impact vibration；Within the period of about 4S-5S, sliding block
Backhaul, the quick ramp down of master cylinder pressure to circulating pressure, master cylinder pressure non-overshoot amount during this, without impact vibration；It returns
Stroke pressure quickly ramps up, non-overshoot amount, without impact vibration.
Claims (1)
1. a kind of fast forging control valve device of hydraulic forging press, which is characterized in that including：
Proportional throttle valve, including one end open and the internal valve pocket with cavity and the ratio electromagnetism for being installed on valve pocket open end
Iron；The cavity includes cavity body, and oil outlet/first that the proportional throttle valve is communicated on the side wall of cavity body controls
Mouthful；The proportion electro-magnet includes magnet control unit, pilot valve and spring, and the magnet control unit is fixed
It is installed on valve pocket one end, the pilot valve is located in cavity body, and the shape and size of pilot valve fit in cavity body,
Pilot valve drives pilot valve slide displacement in the cavity body with magnet control unit, changes oil outlet/the first
The area of control mouth hydraulic oil circulation；The spring is connected to the pilot valve and rebounds back initial bit for pilot valve
It sets；
Plug-in power stage main valve；
Measurement module；
Control module includes the input unit being electrically connected with measuring device, arithmetic element and electric with the proportion electro-magnet
Property connection output unit, the feedback signal of input unit access measurement module simultaneously sends out input value to arithmetic element, institute
It states after arithmetic element is compared operation according to the input value of pressure set points and input unit, finger is sent out to output unit
It enables, signal of the output unit according to instruction output for controlling the proportion electro-magnet displacement；
The valve pocket further includes the valve pocket protruding portion for having side to be connected to the oil outlet, has narrow slot inside valve pocket protruding portion；
The junction of the narrow slot and cavity body side wall forms throttling seamed edge；The pilot valve slide displacement, with the throttling rib
While changing the hydraulic oil circulation area of the narrow slot；
The plug-in power stage main valve includes main valve body, and the main valve plug being plugged in main valve body, is wrapped on the main valve body
Include the first main hydraulic fluid port being connected to the oil inlet pipe in the hydraulic system of the hydraulic forging press, the liquid with the hydraulic forging press
In pressure system oil return pipe connection the second main hydraulic fluid port, and be connected to the cavity body of the proportional throttle valve second control
Mouthful；Described main valve plug one end is close to the second control mouth, and the area of the main valve plug end is much larger than the internal diameter of the second control mouth；
The other end of the main valve plug is butted on the described first main oil port, and the main valve plug end area is interior slightly larger than the first main hydraulic fluid port
Diameter；
The measurement module includes being installed on main valve plug and the main valve plug displacement sensor for measuring main valve plug displacement, installation
In first pressure sensor of the fluid pressure line for measuring the hydraulic forging press master cylinder pressure force value and for measuring it is described
The second pressure sensor of hydraulic forging press kicker cylinder pressure value；
The measurement module further includes being installed on pilot valve and the pilot valve displacement biography for measuring pilot valve displacement
Sensor；
According to the actual demand that hydraulic press forges, input pressure setting value, fast control valve device of forging is according to being input to control module
Pressure set points, from control module to proportion electro-magnet output signal control proportion electro-magnet displacement, it is fuel-displaced to control
Mouthful/first control mouth hydraulic oil circulation area, to change the pressure of proportional throttle valve internal cavity, the variation of cavity pressure makes
By the pressure change for the main valve plug that control mouth is connected to cavity, to change main valve plug in the position of plug-in power stage main valve
It sets, changes the flow of the first main hydraulic fluid port and the second main hydraulic fluid port, while the displacement by the way that measurement module to be inputed to control module
After value of feedback and pressure feedback value are compared judgement with pressure set points, control module is to proportion electro-magnet output signal control
The displacement of proportion electro-magnet processed corrects the area of the control mouth hydraulic oil circulation of oil outlet/first, you can acquisition can meet technique need
The oil pressure load asked and unloading curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310193485.6A CN103292004B (en) | 2013-05-22 | 2013-05-22 | The fast forging control valve device of hydraulic forging press |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310193485.6A CN103292004B (en) | 2013-05-22 | 2013-05-22 | The fast forging control valve device of hydraulic forging press |
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| CN103292004A CN103292004A (en) | 2013-09-11 |
| CN103292004B true CN103292004B (en) | 2018-09-25 |
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| CN201310193485.6A Active CN103292004B (en) | 2013-05-22 | 2013-05-22 | The fast forging control valve device of hydraulic forging press |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822624B (en) * | 2016-05-18 | 2017-07-11 | 浙江大学 | A kind of valve element dynamic test system of pilot-operated type load control valve |
| CN106141055B (en) * | 2016-08-26 | 2017-11-03 | 安徽安簧机械股份有限公司 | A kind of C-frame hydraulic press servo-drive system for being applied to forging |
| WO2019102909A1 (en) * | 2017-11-22 | 2019-05-31 | イーグル工業株式会社 | Solenoid valve |
| CN113351817A (en) * | 2021-04-30 | 2021-09-07 | 天津市天锻压力机有限公司 | Flexible control method of forging press |
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| CN2272083Y (en) * | 1996-05-20 | 1998-01-07 | 杭州精工液压机电有限公司 | Differential pressure feedback cone valve electrohydraulic proportional pressure reducing vavle |
| CN101929482A (en) * | 2010-08-25 | 2010-12-29 | 太原理工大学 | Proportional flow valve controlled by pilot flow closed loop |
| CN102913634A (en) * | 2012-10-31 | 2013-02-06 | 海门市油威力液压工业有限责任公司 | High flow digital double closed-loop two-way plug-in proportional throttling valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001280516A (en) * | 2000-03-30 | 2001-10-10 | Denso Corp | Pressure control valve |
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2013
- 2013-05-22 CN CN201310193485.6A patent/CN103292004B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2272083Y (en) * | 1996-05-20 | 1998-01-07 | 杭州精工液压机电有限公司 | Differential pressure feedback cone valve electrohydraulic proportional pressure reducing vavle |
| CN101929482A (en) * | 2010-08-25 | 2010-12-29 | 太原理工大学 | Proportional flow valve controlled by pilot flow closed loop |
| CN102913634A (en) * | 2012-10-31 | 2013-02-06 | 海门市油威力液压工业有限责任公司 | High flow digital double closed-loop two-way plug-in proportional throttling valve |
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