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Hydraulic loop of ten thousand hydraulic press operation system

A hydraulic circuit and control system technology, applied in the direction of presses, manufacturing tools, etc., can solve the problems of easy leakage, scattered control system layout, low control accuracy, etc., to reduce labor intensity and improve reliability.

Inactive Publication Date: 2005-08-03
CENT SOUTH UNIV
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AI Technical Summary

Problems solved by technology

[0002] The hydraulic circuit of the existing 10,000-ton hydraulic press control system generally uses a three-position four-way electromagnetic slide valve to control the servo cylinder, and the three-position four-way electromagnetic slide valve has the disadvantages of being sensitive to the viscosity of hydraulic oil, easy to leak after wear, and slow in response, which leads to control failures. After the system has been used for a period of time, the manipulation requirements cannot be accurately realized
The existing control system adopts manual control and relay control, the automation level is not high, the control precision is low, and the layout of the control system is scattered, which is not conducive to maintenance and repair

Method used

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  • Hydraulic loop of ten thousand hydraulic press operation system

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Embodiment Construction

[0008] The hydraulic circuit of the control system of the 10,000-ton hydraulic press, such as figure 1 As shown, it includes oil cylinder 1, cone valve 2, and two-position three-way high-speed switching solenoid valve 3. The specific working process is: when the high-speed switching solenoid valve D1 is energized and D2 is de-energized, port A is connected to the pressure oil of the main circuit, and port B is connected to the pressure oil of the main circuit. The port communicates with the oil tank, and the oil cylinder moves to the right; when the high-speed switch solenoid valve D1 is de-energized and D2 is energized, the A port communicates with the oil tank, and the B port communicates with the main circuit pressure oil, and the oil cylinder moves left; when both D1 and D2 are energized , the oil cylinder is in a floating state; when both D1 and D2 are de-energized, the oil cylinder is locked.

[0009] The control of the high-speed switching solenoid valves D1 and D2 is d...

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Abstract

The hydraulic loop for ten thousand ton hydraulic press operation system includes oil cylinders, conic valves and two-position three way high speed solenoid valves, and has one three-position four way digital valve comprising 4 conic valves and 2 two-position three way high speed solenoid valves. The conic valves act as the main control valves, the high speed solenoid valve as the fore running valve, and the conic valves are controlled to open or close via the control of high speed solenoid valves. The high speed solenoid valves are controlled with industrial control computer to realize digital control. The fore running valve may have its oil supplying pressure from autonomous loop or other pressure source. The present invention realizes the digital design of the hydraulic loop for ten thousand ton hydraulic press operation system and has raised reliability, operation performance, automation level and control precision of the operation system.

Description

technical field [0001] The invention relates to a 10,000-ton hydraulic press used for material pressure processing, in particular to a hydraulic circuit of the control system of the 10,000-ton hydraulic press. Background technique [0002] The hydraulic circuit of the existing 10,000-ton hydraulic press control system generally uses a three-position four-way electromagnetic slide valve to control the servo cylinder, and the three-position four-way electromagnetic slide valve has the disadvantages of being sensitive to the viscosity of hydraulic oil, easy to leak after wear, and slow in response, which leads to control failures. After the system has been used for a period of time, the manipulation requirements cannot be accurately realized. The existing control system adopts manual control and relay control, the automation level is not high, the control precision is low, and the layout of the control system is scattered, which is not conducive to maintenance and repair. Con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B30B15/16
Inventor 刘少军黄中华郭淑娟钟掘
Owner CENT SOUTH UNIV
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