CN101758642A - Four corner pressure regulating device of lower hydraulic cushion on hydraulic machine - Google Patents

Four corner pressure regulating device of lower hydraulic cushion on hydraulic machine Download PDF

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Publication number
CN101758642A
CN101758642A CN200910228310A CN200910228310A CN101758642A CN 101758642 A CN101758642 A CN 101758642A CN 200910228310 A CN200910228310 A CN 200910228310A CN 200910228310 A CN200910228310 A CN 200910228310A CN 101758642 A CN101758642 A CN 101758642A
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CN
China
Prior art keywords
hydraulic
cushion
valve
pressure regulating
control
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
Application number
CN200910228310A
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Chinese (zh)
Inventor
邰小琴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Tianduan Press Co Ltd
Original Assignee
Tianjin Tianduan Press Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tianjin Tianduan Press Co Ltd filed Critical Tianjin Tianduan Press Co Ltd
Priority to CN200910228310A priority Critical patent/CN101758642A/en
Publication of CN101758642A publication Critical patent/CN101758642A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a four corner pressure regulating device of a lower hydraulic cushion on a hydraulic machine, belonging to the technical field of the hydraulic machine. The four corner pressure regulating device of the lower hydraulic cushion on the hydraulic machine comprises a hydraulic pipeline and an electromagnetic valve and is characterized in that the four corners of the lower hydraulic cushion are provided with four plunger cylinders and each plunger cylinder is provided with an independent hydraulic control mechanism; and the hydraulic control mechanism independently controls the piston cylinder of the lower hydraulic cushion to stretch or jack up and return. The four corner pressure regulating device has the advantages of simple structure, convenient control, stability and reliability, comprehensive functions, excellent performance, low operational cost, easy implementation of the compression molding of complex work pieces and the like, and can be widely applied to hydraulic machine industries.

Description

A kind of four corner pressure regulating device of lower hydraulic cushion on hydraulic machine
Technical field
The invention belongs to the hydraulic press technical field, particularly relate to a kind of four corner pressure regulating device of lower hydraulic cushion on hydraulic machine.
Background technology
At present, continuous development along with science and technology, people are also improving constantly the requirement of hydraulic press, hope on general hydralic stamping press, also can realize to the irregular workpiece of complexity stretch, function such as bending, moulding, want to realize these functions so, how better regulating down, the pressure of hydraulic die cushion has just become subject matter.Existing technology can't be carried out four jiaos by required reasonable pressure regulation, causes four jiaos of pressure adjusting difficulties when stretching, the percent defective height, and the hydraulic problems that can't satisfy production demand, particularly special workpiece is more outstanding.
Summary of the invention
The present invention provides a kind of four corner pressure regulating device of lower hydraulic cushion on hydraulic machine for solving the technical problem that exists in the known technology.
The purpose of this invention is to provide that a kind of to have simple in structure, convenient, reliable and stable a, complete function of control, function admirable, operating cost low, be easy to realize the four corner pressure regulating device of lower hydraulic cushion on hydraulic machine of the characteristics such as compression moulding of complex part.
The control system of four jiaos of pressure regulation of hydraulic die cushion under the present invention is four plunger cylinders of four jiaos of layouts at following hydraulic die cushion, and an independently hydraulic control system is set on each oil cylinder.In the control system, the hydraulic die cushion cylinder participates in the drawing process action, is to overlap independently mini system; The jack-up of liftout tank control hydraulic die cushion, return, be another set of independently mini system.By controlling the break-make of different magnetic valves.The stretching operating pressure that the following hydraulic die cushion of proportional pressure control valve control is four jiaos is selected the corresponding proportional pressure control valve of hydraulic die cushion cylinder, controls the pressure of itself.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is:
A kind of four corner pressure regulating device of lower hydraulic cushion on hydraulic machine, comprise conduit under fluid pressure and magnetic valve, be characterized in: the four corner pressure regulating device of lower hydraulic cushion on hydraulic machine is that hydraulic die cushion is provided with four plunger cylinders for four jiaos down, and each plunger cylinder is provided with an independently hydraulic control; Hydraulic control controls independently down that the hydraulic die cushion piston cylinder stretches or jack-up, return.
The present invention can also adopt following technical scheme:
The four corner pressure regulating device of described lower hydraulic cushion on hydraulic machine is characterized in: hydraulic control is respectively that proportional pressure control valve, safety valve and prefill valve connect and compose independently jack-up, the back body that controlling organization and inserted valve group constitute that independently stretch.
The four corner pressure regulating device of described lower hydraulic cushion on hydraulic machine is characterized in: hydraulic control is provided with Programmable Logic Controller and pressure sensor, and Programmable Logic Controller connects control ratio overflow valve, inserted valve group and pressure sensor.
Advantage and good effect that the present invention has are:
The four corner pressure regulating device of lower hydraulic cushion on hydraulic machine is owing to adopted brand-new technology scheme of the present invention, compared with prior art, the present invention is applied in proportional pressure control valve on the hydraulic press can effectively regulate liquid working pressure, its control is stable, reliably, and after being applied in this technology on the hydraulic press, can make the type hydraulic press have stretching, crooked, in the time of technologies such as moulding, also have functions such as stretching to the irregular workpiece of complexity, make the function of press more comprehensive, performance is more good, while is according to the profile difference of processing work, regulate four jiaos of pressure participations of hydraulic die cushion work down arbitrarily, reduce the operating cost of processing, be easy to realize the compression moulding of complex part.So this technology has highly application value.
Description of drawings
Fig. 1 is the four corner pressure regulating device hydraulic principle structural representation of lower hydraulic cushion on hydraulic machine of the present invention.
Among the figure, hydraulic die cushion, 2-plunger cylinder, 3-liftout tank, 4-prefill valve, 5-pressure sensor, 6-proportional pressure control valve, 7-pressure valve plug-in unit cover plate, 8-safety valve, 9-pressure measuring tie-in, 10-pressure switch, 11-Pressure gauge, 12-inserted valve group, 13-manual pressure regulating valve, 14-oil pipe under the 1-.
The specific embodiment
For further understanding technology contents of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
Consult accompanying drawing 1.
Embodiment 1
A kind of four corner pressure regulating device of lower hydraulic cushion on hydraulic machine, comprise conduit under fluid pressure and magnetic valve, the four corner pressure regulating device that is characterized in lower hydraulic cushion on hydraulic machine is that hydraulic die cushion is provided with four plunger cylinders 2 for four jiaos down, and each plunger cylinder is provided with an independently hydraulic control; Hydraulic control controls independently down that the hydraulic die cushion piston cylinder stretches or jack-up, return.
Hydraulic control is respectively that proportional pressure control valve, safety valve and prefill valve connect and compose independently jack-up, the back body that controlling organization and inserted valve group 12 constitute that independently stretch.Hydraulic control is provided with Programmable Logic Controller and pressure sensor, and Programmable Logic Controller connects control ratio overflow valve, unidirectional prefill valve 4, inserted valve group and pressure sensor.
The concrete course of work of present embodiment:
The four corner pressure regulating device of lower hydraulic cushion on hydraulic machine, proportional overflow valve 6, pressure valve plug-in unit cover plate 7, safety valve 8, pressure measuring tie-in 9, oil pipe 14, its proportional pressure control valve 6 (YAA, YAB, YAC, YAD) control is the tensile pressures of hydraulic die cushion 1 down, liftout tank 3 is controlled the jack-up of following hydraulic die cushion 1 and is return, and pressure measuring tie-in 9 can record the abutment pressure of liftout tank; What pressure sensor 5 (BP1, BP2, BP3, BP4) detected is the tensile pressures of the following hydraulic die cushion 1 in the work, and the data that record are fed back among the PLC, by the conversion process of data, is presented on the control box, and the handled easily person reads and be provided with running parameter.Manual pressure regulating valve 13 is regulated abutment pressure, and Pressure gauge 11 shows liftout tank pressure, and pressure switch 10 detects liftout tank pressure.

Claims (3)

1. the four corner pressure regulating device of a lower hydraulic cushion on hydraulic machine, comprise conduit under fluid pressure and magnetic valve, it is characterized in that: the four corner pressure regulating device of lower hydraulic cushion on hydraulic machine is that hydraulic die cushion is provided with four plunger cylinders for four jiaos down, and each plunger cylinder is provided with an independently hydraulic control; Hydraulic control controls independently down that the hydraulic die cushion piston cylinder stretches or jack-up, return.
2. according to the four corner pressure regulating device of the described lower hydraulic cushion on hydraulic machine of claim 1, it is characterized in that: hydraulic control is respectively that proportional pressure control valve, safety valve and prefill valve connect and compose independently jack-up, the back body that controlling organization and inserted valve group constitute that independently stretch.
3. according to the four corner pressure regulating device of the described lower hydraulic cushion on hydraulic machine of claim 2, it is characterized in that: hydraulic control is provided with Programmable Logic Controller and pressure sensor, and Programmable Logic Controller connects control ratio overflow valve, inserted valve group and pressure sensor.
CN200910228310A 2009-11-19 2009-11-19 Four corner pressure regulating device of lower hydraulic cushion on hydraulic machine Pending CN101758642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910228310A CN101758642A (en) 2009-11-19 2009-11-19 Four corner pressure regulating device of lower hydraulic cushion on hydraulic machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910228310A CN101758642A (en) 2009-11-19 2009-11-19 Four corner pressure regulating device of lower hydraulic cushion on hydraulic machine

Publications (1)

Publication Number Publication Date
CN101758642A true CN101758642A (en) 2010-06-30

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Family Applications (1)

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CN200910228310A Pending CN101758642A (en) 2009-11-19 2009-11-19 Four corner pressure regulating device of lower hydraulic cushion on hydraulic machine

Country Status (1)

Country Link
CN (1) CN101758642A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102166832A (en) * 2011-01-17 2011-08-31 合肥合锻机床股份有限公司 Energy-saving and consumption-reducing hydraulic system with multistage pressure control for large hydraulic machine
CN102205663A (en) * 2011-03-14 2011-10-05 南通锻压设备股份有限公司 Numerically-controlled multi-point side-pressing frame hydraulic machine
CN102430634A (en) * 2011-12-31 2012-05-02 沃得重型机床(中国)有限公司 Hydraulic cushion with adjustable edge pressing forces at four corners
CN105015020A (en) * 2015-07-21 2015-11-04 天津市天锻压力机有限公司 Closed-loop pressure regulation control system for four corners of hydraulic die cushions and pressure regulation control method
CN106762886A (en) * 2016-12-05 2017-05-31 重集团大连设计研究院有限公司 Novel numerical control hydraulic pressure mattress system
CN112524104A (en) * 2020-12-03 2021-03-19 中国重型机械研究院股份公司 Hydraulic system and control method of plate stretching machine and plate stretching machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102166832A (en) * 2011-01-17 2011-08-31 合肥合锻机床股份有限公司 Energy-saving and consumption-reducing hydraulic system with multistage pressure control for large hydraulic machine
CN102205663A (en) * 2011-03-14 2011-10-05 南通锻压设备股份有限公司 Numerically-controlled multi-point side-pressing frame hydraulic machine
CN102430634A (en) * 2011-12-31 2012-05-02 沃得重型机床(中国)有限公司 Hydraulic cushion with adjustable edge pressing forces at four corners
CN105015020A (en) * 2015-07-21 2015-11-04 天津市天锻压力机有限公司 Closed-loop pressure regulation control system for four corners of hydraulic die cushions and pressure regulation control method
CN106762886A (en) * 2016-12-05 2017-05-31 重集团大连设计研究院有限公司 Novel numerical control hydraulic pressure mattress system
CN112524104A (en) * 2020-12-03 2021-03-19 中国重型机械研究院股份公司 Hydraulic system and control method of plate stretching machine and plate stretching machine

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Application publication date: 20100630

C02 Deemed withdrawal of patent application after publication (patent law 2001)