CN2820525Y - Hydraulic driving device for intelligent variable frequency electric hydraulic press - Google Patents
Hydraulic driving device for intelligent variable frequency electric hydraulic press Download PDFInfo
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- CN2820525Y CN2820525Y CN 200520026789 CN200520026789U CN2820525Y CN 2820525 Y CN2820525 Y CN 2820525Y CN 200520026789 CN200520026789 CN 200520026789 CN 200520026789 U CN200520026789 U CN 200520026789U CN 2820525 Y CN2820525 Y CN 2820525Y
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- hydraulic press
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Abstract
The utility model provides a hydraulic driving device for an intelligent variable frequency electric hydraulic press. The utility model is characterized in that the output end of an electric motor is connected to an oil pump group, the output end pipeline of the oil pump group is connected to an electromagnetic valve group, and the other end pipeline of the electromagnetic valve group is connected to an oil cylinder driving the sliding block of the hydraulic press; the control end of the electromagnetic valve group is electrically connected with a PC up position machine and a PLC programmable controller, and a frequency changer which controls the motor speed according to the stroke speed of the sliding block of the hydraulic press is electrically connected between the PLC programmable controller and the electric motor. The utility model solves problems that the hydraulic press has large energy consumption and high oil system temperature rise when the hydraulic press is operated alone at 50Hz power frequency, and the utility model greatly lowers the electrical power consumption of the hydraulic press, lowers the temperature of the oil system and extends the service life of the complete machine. In addition, the utility model also has the advantages of simple structure and easy production.
Description
Technical field
The utility model relates to a kind of hydraulic press hydraulic drive control technology field, especially a kind of intelligent frequency-conversion economize on electricity hydraulic press hydraulic transmission.
Background technology
Existing hydraulic press hydraulic transmission is by AC asynchronous motor, with the rotation of 50Hz power frequency constant speed, drives main oil pump to the Hydraulic Power Transmission System fuel feeding.But each action of hydraulic press compacting workpiece because of varying in size of its load, is not constant to the requirement of hydraulic pressure main oil pump.Only make fuel feeding at full speed during fast descending and quick return at slider of hydraulic press as main oil pump, only account for 1/3rd to 1/4th of hydraulic press compacting workpiece overall process these two actuation times, all the other actions only need the part oil mass of main oil pump, and most oil mass flows back to fuel tank through overflow valve.This part " unnecessary " oil mass not only causes waste of electric energy in hydraulic system, and the leakage that can produce pressure oil, and heating heats up the hydraulic press oil circuit, influences the service life of complete machine.
Summary of the invention
The utility model provides intelligent frequency-conversion economize on electricity hydraulic press hydraulic transmission a kind of rational in infrastructure, energy-conservation for solving the technical problem that exists in the known technology.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:
A kind of intelligent frequency-conversion economize on electricity hydraulic press hydraulic transmission, form by the PLC Programmable Logic Controller of oil pump group, the magnetic valve group that is connected with the oil pump group, the oil cylinder that is connected with the magnetic valve group, the action of control magnetic valve group and the motor of PC host computer and the rotation of driving oil pump group, described motor also is electrically connected with the PLC Programmable Logic Controller by frequency converter, power input R, the S of frequency converter, T connect power supply, and output U, the V of frequency converter, W connect motor; Each control end of the FWD of frequency converter, MI1, MI2, MI3, MI4 and DCM respectively with the motor rotation of the output selecting side of PLC/stop KAO, soft start speed command KA1, fast down, snap back speed command KA2, each end of returning pressurize speed command KA3, material loading blanking velocity instruction KA4 down, slowly slowly be connected.
Advantage and the good effect that the utlity model has are: increased frequency converter between the PLC Programmable Logic Controller owing to motor that drives main oil pump at hydraulic press and control magnetic valve group, make the flow of motor according to the needs control main oil pump of slider of hydraulic press action, significantly reduced the hydraulic flow of whole oil piping system, not only economize on electricity, and reduce hydraulic press oil circuit temperature, reduce hydraulic press and respectively move the vibration of transfer process, improve hydraulic press service life; The utility model also has advantage simple in structure, that be easy to make in addition.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a circuit control block diagram of the present utility model;
Fig. 3 is a frequency converter electrical schematic diagram of the present utility model.
Wherein: 1, PC host computer; 2, PLC Programmable Logic Controller, 3, communication bus; 4, frequency converter; 5, oil cylinder; 6, magnetic valve group; 7, oil pump; 8, motor.
The specific embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1, the output axle head pipeline of motor 8 connects oil pump group 7, and the output pipeline of oil pump group connects magnetic valve group 6, and magnetic valve group pipeline connects oil cylinder 5, PC host computer 1 and PLC Programmable Logic Controller 2 are electrically connected the magnetic valve group by communication bus 3, control cylinder action.In order to make the oil pump group according to hydraulic press compacting workpiece technological action fuel feeding, also being electrically connected with model between motor and PLC Programmable Logic Controller is the frequency converter 4 of Delta VFD-F, makes output speed-regulating instruction (soon down, the snap back of the rotating speed of motor by PLC; Slowly descend, return slowly, pressurize; Workpiece material loading, blanking), input to frequency converter, frequency converter changes the frequency of exporting to motor according to the instruction of PLC, reaches the rotating speed that changes motor, finally realizes the purpose of oil pump group variable fuel feeding, as shown in Figure 2.Shown in Figure 3, input R, the S of frequency converter, T connect power supply, and output U, the V of frequency converter, W connect motor; The tie point of the FWD of Frequency Converter Control end, MI1, MI2, MI3, MI4 and DCM be connected respectively motor rotation/halt instruction KAO, the soft start speed command KA1 of PLC output, soon descend snap back speed command KA2, descend slowly, return slowly, each end of pressurize speed command KA3, the instruction of material loading blanking velocity KA4, COM, can make motor speed change under the control of PLC and frequency converter like this, thereby change the flow of oil pump, save the energy.
Claims (1)
1. intelligent frequency-conversion economize on electricity hydraulic press hydraulic transmission, form by the PLC Programmable Logic Controller of oil pump group, the magnetic valve group that is connected with the oil pump group, the oil cylinder that is connected with the magnetic valve group, the action of control magnetic valve group and the motor of PC host computer and the rotation of driving oil pump group, it is characterized in that: described motor also is electrically connected with the PLC Programmable Logic Controller by frequency converter, power input R, the S of frequency converter, T connect power supply, and output U, the V of frequency converter, W connect motor; Each control end of the FWD of frequency converter, MI1, MI2, MI3, MI4 and DCM respectively with the motor rotation of the output selecting side of PLC/stop KAO, soft start speed command KA1, soon descend snap back speed command KA2, descend slowly, return slowly, each end of KA4 of pressurize speed command KA3, material loading, blanking velocity instruction is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520026789 CN2820525Y (en) | 2005-07-26 | 2005-07-26 | Hydraulic driving device for intelligent variable frequency electric hydraulic press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520026789 CN2820525Y (en) | 2005-07-26 | 2005-07-26 | Hydraulic driving device for intelligent variable frequency electric hydraulic press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2820525Y true CN2820525Y (en) | 2006-09-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520026789 Expired - Fee Related CN2820525Y (en) | 2005-07-26 | 2005-07-26 | Hydraulic driving device for intelligent variable frequency electric hydraulic press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2820525Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863139A (en) * | 2010-06-07 | 2010-10-20 | 佛山市新信德节能环保投资管理有限公司 | Energy-saving control device for punch presses |
| CN102161241A (en) * | 2011-01-19 | 2011-08-24 | 周应芳 | Method for performing energy-saving transformation on hydraulic press |
| CN102720665A (en) * | 2012-07-03 | 2012-10-10 | 苏州张扬能源科技有限公司 | Energy consumption reduction hydraulic pump device |
| CN108435814A (en) * | 2017-02-16 | 2018-08-24 | 宇部兴产机械株式会社 | The control method of extruder and extruder |
| CN111604451A (en) * | 2020-05-20 | 2020-09-01 | 天津天锻航空科技有限公司 | Control method and control system for hot forming process of high-precision forging hydraulic press |
-
2005
- 2005-07-26 CN CN 200520026789 patent/CN2820525Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863139A (en) * | 2010-06-07 | 2010-10-20 | 佛山市新信德节能环保投资管理有限公司 | Energy-saving control device for punch presses |
| CN102161241A (en) * | 2011-01-19 | 2011-08-24 | 周应芳 | Method for performing energy-saving transformation on hydraulic press |
| CN102161241B (en) * | 2011-01-19 | 2014-04-23 | 杭州浩森电气自动化工程有限公司 | Method for performing energy-saving transformation on hydraulic press |
| CN102720665A (en) * | 2012-07-03 | 2012-10-10 | 苏州张扬能源科技有限公司 | Energy consumption reduction hydraulic pump device |
| CN108435814A (en) * | 2017-02-16 | 2018-08-24 | 宇部兴产机械株式会社 | The control method of extruder and extruder |
| CN111604451A (en) * | 2020-05-20 | 2020-09-01 | 天津天锻航空科技有限公司 | Control method and control system for hot forming process of high-precision forging hydraulic press |
| CN111604451B (en) * | 2020-05-20 | 2022-06-17 | 天津天锻航空科技有限公司 | Control method and control system for hot forming process of high-precision forging hydraulic press |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |