CN102758806B - Crossbeam press multi-hydraulic cushion synchronous control system - Google Patents
Crossbeam press multi-hydraulic cushion synchronous control system Download PDFInfo
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- CN102758806B CN102758806B CN201210247303.4A CN201210247303A CN102758806B CN 102758806 B CN102758806 B CN 102758806B CN 201210247303 A CN201210247303 A CN 201210247303A CN 102758806 B CN102758806 B CN 102758806B
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Abstract
The invention relates to a crossbeam press multi-hydraulic cushion synchronous control system which comprises a plurality of groups of hydraulic cushions, a hydraulic cushion cylinder and an ejector cylinder, wherein the hydraulic cushions are connected with the hydraulic cushion cylinder and the ejector cylinder, the hydraulic cushion cylinder is connected onto a low-pressure return oil pipe by a hydraulic cushion control valve group which is connected with a control oil pipe, a retreat cavity oil inlet of the ejector cylinder is connected with the hydraulic cushion control valve group and a J-shaped electromagnetic directional valve, an ejector cavity oil way of the ejector cylinder is connected with the low-pressure return oil pipe by a safety overflowing valve, and the crossbeam press multi-hydraulic cushion synchronous control system is characterized in that the ejector cavity oil way of the ejector cylinder is further connected with a one-way valve and a synchronous cylinder which controls the hydraulic cushions to be synchronously ejected and retreated. The crossbeam press multi-hydraulic cushion synchronous control system has the advantages of being capable of ensuring that the multiple hydraulic cushions can be synchronously ejected and retreated, controlling a mold core in a mold to stably work, avoiding blocking of the mold core, improving the press forming precision and pass percent of a car crossbeam, and being convenient to debug and simple to maintain.
Description
Technical field
The invention belongs to metal forming machinery manufacturing technology field, particularly relate to a kind of crossbeam press many hydraulic die cushions synchronous control system.
Background technique
Automobile chassis is supporting, motor car engine and each parts thereof and assembly are installed and accept motor power, make automobile produce motion to ensure the normal important automobile component travelled.At present, the hydraulic press for automobile industry has various ways, automobile longitudinal girder hydraulic press according to the technological requirement of compacting, can realize the functions such as the stretching to U-shaped longeron, bending and shaping.The automobile longitudinal girder of this press compacting bends by the longeron sheet material after thick 4 ~ 12mm, wide 300 ~ 600mm, long 6 ~ 12m punching is carried out compacting and obtain through shaping, therefore require that the active force of hydraulic cushion of hydraulic press can meet the longeron moulding process needs of the longest 12m, above-mentioned press adopts integrated hydraulic pad greatly can reduce the intensity of bottom end rail, according to the particularity of processing technology, need design many groups hydraulic die cushion work in combination, but, adopt the combination of many group hydraulic die cushions must meet precise synchronization and control its jack-up or return action.
Because automotive frame Workpiece length is commonly 6 ~ 12m, the compacting tool set length that it adopts is also very long, core rod by push rod by hydraulic die cushion jack-up, fall.If hydraulic die cushion jack-up or when falling asynchronous, then core rod may be caused to block, and serious also can be squeezed to cracking failure by mould.
At present, adopting multiple hydraulic die cushion jack-up, returning the hydraulic press of synchronization control is generally the mode that then employing one road fuel feeding uses throttle valve control respectively.Which debug difficulties, the synchronous jack-up being difficult to realize multiple hydraulic die cushion with return, low precision, and adjustment also needs to readjust after using a period of time.In addition, another kind of structure is that each hydraulic die cushion is all equipped with independent power source, and adjusts flow by throttle valve, its synchronous jack-up and the less effective return, same need just adjust once at set intervals, and require higher to technical merit, and effect also cannot reach the accreditation of user.
Summary of the invention
The present invention provides a kind of and is applicable to large-tonnage, long table face automotive frame plate forming technique, conveniently debugs, be convenient to keep in repair and can increase substantially crossbeam press many hydraulic die cushions synchronous control system of automotive frame workpiece compacting quality for solving in known technology the technical problem that exists.
The technological scheme that the present invention takes for the technical problem existed in solution known technology is:
Crossbeam press many hydraulic die cushions synchronous control system, comprise and organize hydraulic die cushion more, hydraulic control pad produces the hydraulic cushion cylinder of technological action, hydraulic control pad jack-up and the liftout tank return, described hydraulic die cushion is by fastening piece and hydraulic cushion cylinder, liftout tank connects, described hydraulic cushion cylinder is connected on low-pressure oil return pipe through hydraulic die cushion control valve group, described hydraulic die cushion control valve group is connected with control oil pipe, described liftout tank return chamber hydraulic fluid port connecting fluid pressure pad control valve group and J type solenoid directional control valve, the jack-up chamber oil circuit of liftout tank is connected with low-pressure oil return pipe by safety overflow valve, it is characterized in that: the jack-up chamber oil circuit of described liftout tank is also connected with synchronous hydraulic cylinder and the one-way valve of the synchronous jack-up of hydraulic control pad and falling.
The present invention can also adopt following technological scheme:
The number of described synchronous hydraulic cylinder control mouth equals the number of institute's hydraulic control pad.
Described synchronous hydraulic cylinder is connected with J type solenoid directional control valve by equilibrium valve.
Described crossbeam press many hydraulic die cushions synchronous control system also comprises high pressure oil inlet pipe and Fill valve group, and described high pressure oil inlet pipe is connected with the jack-up chamber oil circuit of liftout tank by Fill valve group, one-way valve.
Pressure transducer is provided with between described hydraulic cushion cylinder and hydraulic die cushion control valve group.
The advantage that the present invention has and good effect are: because the present invention adopts technique scheme, namely realize the synchronous jack-up of multiple hydraulic die cushion by synchronous hydraulic cylinder and fall, the number of synchronous hydraulic cylinder control mouth equals the number of institute's hydraulic control pad, synchronous hydraulic cylinder one chamber all taps into oil, such synchronous hydraulic cylinder all can obtain the oil that arrives, although carry out oil mass difference, but because the piston cylinder of all synchronous hydraulic cylinders all adopts rigid connection structure, so stroke keeps duplicate, and the fluid volume exported is also just the same.Output one tunnel of synchronous hydraulic cylinder connects the jack-up chamber of liftout tank, and during hydraulic die cushion jack-up, it is identical that the jack-up of each jack-up cylinder controls oily flow; When hydraulic die cushion is return, the passive oil extraction flow of each jack-up cylinder is identical.The synchronous jack-up of many hydraulic die cushions can be ensure that like this and return.Synchronous jack-up and the core rod smooth working of returning in controlled molding jig of hydraulic die cushion, avoid core rod to block, and then improve compressing precision and the up-to-standard rate of automotive frame.This many hydraulic die cushions synchronous control system is particularly useful for large-tonnage, long table face automobile longitudinal girder plate forming technique, debugs convenient, easy to maintenance.This control mode will, because of the change of the external factors such as mould core weight, cause jack-up to return the change of synchronous speed, this is because synchronized cylinder controls its jack-up and return flow to be constant.Do not need to readjust synchronization control because of the replacing of mould.Synchronized cylinder controls to ensure that identical oil mass exports by mechanical rigid piston rod, and control unit is few, and action is simple and reliable, easy to maintenance.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
In figure: 1, hydraulic die cushion; 2, hydraulic cushion cylinder; 3, liftout tank; 4, pressure transducer; 5, hydraulic die cushion control valve group (YAC); 6, control oil pipe; 7, remaining fluid pressure pad control valve group; 8, synchronous hydraulic cylinder; 9, safety overflow valve; 10, one-way valve; 11, equilibrium valve; 12, Fill valve group (YA64); 13, J type solenoid directional control valve (YA61, YA62); 14, high pressure oil inlet pipe; 15, low-pressure oil return pipe.
Embodiment
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, crossbeam press many hydraulic die cushions synchronous control system, comprise many group hydraulic die cushions 1, hydraulic cushion cylinder 2 that hydraulic control pad produces technological action, hydraulic control pad jack-up and the liftout tank 3 return, described hydraulic die cushion is connected with hydraulic cushion cylinder, liftout tank by fastening piece, in the present embodiment, described hydraulic die cushion is connected with hydraulic cushion cylinder, liftout tank by bolt.Described hydraulic cushion cylinder is connected on low-pressure oil return pipe 15 through hydraulic die cushion control valve group 5, described hydraulic die cushion control valve group 5 is connected with control oil pipe 6, described liftout tank return chamber hydraulic fluid port connecting fluid pressure pad control valve group 5 and J type solenoid directional control valve 13, the jack-up chamber oil circuit of liftout tank is connected with low-pressure oil return pipe 15 by safety overflow valve 9, ensures the safety pressure of liftout tank oil pocket.The jack-up chamber oil circuit of described liftout tank is also connected with synchronous hydraulic cylinder 8 and the one-way valve 10 of the synchronous jack-up of hydraulic control pad and falling, in the present embodiment, the number of described synchronous hydraulic cylinder control mouth equals the number of institute's hydraulic control pad, synchronous hydraulic cylinder is made up of identical several cylinder bodies, synchronous hydraulic cylinder all adopts piston structure, one chamber inputs a chamber and exports, synchronous hydraulic cylinder can adopt same cylinder diameter, also different cylinder diameters can be adopted, native system piston cylinder adopts identical cylinder diameter bar footpath, and therefore synchronous hydraulic cylinder is also all identical.
Described synchronous hydraulic cylinder 8 is connected with J type solenoid directional control valve 13 by equilibrium valve 11.
Described crossbeam press many hydraulic die cushions synchronous control system also comprises high pressure oil inlet pipe 14 and Fill valve group 12, and described high pressure oil inlet pipe 14 is connected with the jack-up chamber oil circuit of liftout tank by Fill valve group 12 (YA64), one-way valve 10.
For the ease of monitoring the oil pressure of hydraulic cushion cylinder 2, between described hydraulic cushion cylinder 2 and hydraulic die cushion control valve group 5, be provided with pressure transducer 4, remaining fluid pressure pad control valve group 7 carries out same setting.
Described synchronous hydraulic cylinder one chamber all taps into oil, such synchronous hydraulic cylinder all can obtain the oil that arrives, although carry out oil mass difference, because the piston cylinder of all hydraulic synchronized cylinder all adopts rigid connection structure, so stroke is duplicate, the fluid volume thus exported also is duplicate.Synchronous hydraulic cylinder exports a road and connects the jack-up chamber of liftout tank, and during hydraulic die cushion jack-up, it is identical that the jack-up of each jack-up cylinder controls oily flow; When hydraulic die cushion is return, the passive oil extraction flow of each jack-up cylinder is identical.The synchronous jack-up of synchronous hydraulic cylinder can be ensure that like this and return.Simultaneously whether each road is put in place according to position limit switch by the selector valve of a little latus rectum and carries out repairing to synchronous hydraulic cylinder, to make up the small interior leakage problem of hydraulic system.
Working principle of the present invention is:
The technique tensile pressures of hydraulic die cushion control valve group 5 hydraulic control pad 1, and the repairing of hydraulic control pad cylinder 2, oil extraction; J type solenoid directional control valve 13 and synchronous hydraulic cylinder 8 control high pressure oil inlet pipe 14 and low-pressure oil return pipe 15, as J type solenoid directional control valve 13(YA61) obtain the synchronous jack-up of electric multiple hydraulic die cushion, J type solenoid directional control valve 13(YA62) must synchronously return by electric multiple hydraulic die cushion.Pressure transducer 4, for the technique tensile pressures of hydraulic die cushion in testing 1, by the data feedback that records in PLC, by the conversion treatment of data, is presented on operating box, and easy-to-operat person reads and arranges running parameter.Safety overflow valve 9 is for ensureing the pressure security in the jack-up chamber of jack-up cylinder 3, when the fluid in the cavity of resorption and synchronous hydraulic cylinder 8 of jack-up cylinder has leakage loss, Fill valve group 12(YA64) must be electric, supplement fluid by one-way valve 10, ensure that hydraulic die cushion 1 can be parked in arbitrary position and not slip down by equilibrium valve 11.
Above one embodiment of the present of 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 (5)
1. crossbeam press many hydraulic die cushions synchronous control system, comprise and organize hydraulic die cushion more, hydraulic control pad produces the hydraulic cushion cylinder of technological action, hydraulic control pad jack-up and the liftout tank return, described hydraulic die cushion is by fastening piece and hydraulic cushion cylinder, liftout tank connects, described hydraulic cushion cylinder is connected on low-pressure oil return pipe through hydraulic die cushion control valve group, described hydraulic die cushion control valve group is connected with control oil pipe, described liftout tank return chamber hydraulic fluid port connecting fluid pressure pad control valve group and J type solenoid directional control valve, the jack-up chamber oil circuit of liftout tank is connected with low-pressure oil return pipe by safety overflow valve, it is characterized in that: the jack-up chamber oil circuit of described liftout tank is also connected with the synchronous jack-up of hydraulic control pad and the synchronous hydraulic cylinder return and one-way valve.
2. crossbeam press many hydraulic die cushions synchronous control system according to claim 1, is characterized in that: the number of described synchronous hydraulic cylinder control mouth equals the number of institute's hydraulic control pad.
3. crossbeam press many hydraulic die cushions synchronous control system according to claim 2, is characterized in that: described synchronous hydraulic cylinder is connected with J type solenoid directional control valve by equilibrium valve.
4. crossbeam press many hydraulic die cushions synchronous control system according to claim 1, it is characterized in that: described crossbeam press many hydraulic die cushions synchronous control system also comprises high pressure oil inlet pipe and Fill valve group, described high pressure oil inlet pipe is connected with the jack-up chamber oil circuit of liftout tank by Fill valve group, one-way valve.
5. crossbeam press many hydraulic die cushions synchronous control system according to claim 1, is characterized in that: be provided with pressure transducer between described hydraulic cushion cylinder and hydraulic die cushion control valve group.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210247303.4A CN102758806B (en) | 2012-07-18 | 2012-07-18 | Crossbeam press multi-hydraulic cushion synchronous control system |
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| CN201210247303.4A CN102758806B (en) | 2012-07-18 | 2012-07-18 | Crossbeam press multi-hydraulic cushion synchronous control system |
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| CN102758806B true CN102758806B (en) | 2015-05-13 |
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| CN103128212A (en) * | 2013-02-04 | 2013-06-05 | 浙江博仑高精机械有限公司 | Adjustable stagewise air cushion cylinder |
| CN105465074A (en) * | 2014-09-02 | 2016-04-06 | 天津市天锻压力机有限公司 | Powder hydraulic machine process synchronous motion system based on Delta controller |
| CN106391818A (en) * | 2016-09-19 | 2017-02-15 | 南通市腾达锻压机床厂 | Independent quick drive hydraulic system of hydraulic cushion of large-table-board hydraulic sheet metal drawing press |
| CN106438535A (en) * | 2016-10-18 | 2017-02-22 | 浙江佳合文化科技股份有限公司 | Multi-directional constant-speed shunting hydraulic cylinder |
| CN109175188B (en) * | 2018-10-22 | 2020-09-25 | 中冶重工（唐山）有限公司 | Synchronous unloading system and unloading method for upper and lower bending die oil cylinders of crankshaft forging press |
| CN113042619A (en) * | 2019-12-26 | 2021-06-29 | 广东利元亨智能装备股份有限公司 | Pit punching structure and method of anti-jamming battery packaging equipment |
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| CN202251171U (en) * | 2011-09-05 | 2012-05-30 | 三一汽车起重机械有限公司 | Motion control device of cylinders in series |
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| FR2695861A1 (en) * | 1992-09-22 | 1994-03-25 | Sipad Sa | Hydraulic power and speed selector for press mfr. - has hydro-electric detector connected to primary actuator chamber to sense changes in press closure speed and power. |
| RU2103566C1 (en) * | 1995-12-20 | 1998-01-27 | Конструкторское бюро специального машиностроения | Load platform jacking-up and levelling hydraulic drive |
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