CN114165487A - Hydraulic control system for composite material - Google Patents

Hydraulic control system for composite material Download PDF

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Publication number
CN114165487A
CN114165487A CN202111541178.3A CN202111541178A CN114165487A CN 114165487 A CN114165487 A CN 114165487A CN 202111541178 A CN202111541178 A CN 202111541178A CN 114165487 A CN114165487 A CN 114165487A
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China
Prior art keywords
cylinder
leveling
oil
valve
plug
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Granted
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CN202111541178.3A
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Chinese (zh)
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CN114165487B (en
Inventor
崖华青
王磊
李贵闪
龚子奎
胡彬彬
张亭
张兰军
倪欢欢
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Hefei Metalforming Intelligent Manufacturing Co ltd
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Hefei Metalforming Intelligent Manufacturing Co ltd
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Priority to CN202111541178.3A priority Critical patent/CN114165487B/en
Publication of CN114165487A publication Critical patent/CN114165487A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/22—Synchronisation of the movement of two or more servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/28—Means for indicating the position, e.g. end of stroke
    • F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/042—Controlling the temperature of the fluid
    • F15B21/0423—Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
    • F15B2215/30—Constructional details thereof

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The invention discloses a hydraulic control system for a composite material, and belongs to the technical field of automatic production lines of hydraulic machines. The hydraulic control system of the composite material comprises a hydraulic control system and an electrical control system, wherein the electrical control system is used for supplying power to the hydraulic control system, the hydraulic control system is applied to a hydraulic machine, and the hydraulic machine is also provided with a four-corner leveling system and an oil cooling system; the hydraulic control system comprises an oil tank, wherein a power source P1 and a power source P2 are arranged on the oil tank, a power source oil inlet is formed in the upper portion of the oil tank, and a pump source control block is arranged on the power source oil inlet; the invention mainly aims to overcome the defects of high energy consumption, high noise, low running speed of a slide block of a hydraulic machine, low reliability of slide block parallelism control and the like of the composite material hydraulic machine in the prior art, and provides a hydraulic control system of a synchronous cylinder control system which is rapid, high in pressure and displacement control precision, energy-saving, noise-reducing and reliable.

Description

Hydraulic control system for composite material
Technical Field
The invention belongs to the technical field of automatic production lines of hydraulic machines, and particularly discloses a hydraulic control system for a composite material.
Background
The composite material has the characteristics of excellent specific strength, specific modulus, corrosion resistance, energy absorption and the like, and plays an increasingly important role in the fields of automobiles, rail transit, airplanes and the like; composite materials with higher integration and manufacturing performance have become one of the mainstream trends of automobile lightweight technology; the existing composite material hydraulic machines have the defects of high energy consumption, high noise and the like, high use cost, severe use environment, low running speed of a slide block of the hydraulic machine, low reliability of slide block parallelism control and the like, and influence on the forming quality of a product; accordingly, the present invention provides a hydraulic control system of composite material to solve the above problems.
Disclosure of Invention
The invention mainly aims to overcome the defects of high energy consumption, high noise, low running speed of a slide block of a hydraulic machine, low reliability of slide block parallelism control and the like of the composite material hydraulic machine in the prior art, and provides a hydraulic control system of a synchronous cylinder control system which is rapid, high in pressure and displacement control precision, energy-saving, noise-reducing and reliable.
In order to achieve the purpose, the invention adopts the following technical scheme:
the hydraulic control system of the composite material comprises a hydraulic control system and an electrical control system, wherein the electrical control system is used for supplying power to the hydraulic control system, the hydraulic control system is applied to a hydraulic machine, and the hydraulic machine is also provided with a four-corner leveling system and an oil cooling system;
the hydraulic control system comprises an oil tank, a cooling power source P is arranged on the oil tank, the cooling power source P comprises a power source P1 and a power source P2, a power source oil inlet is formed above the oil tank, a pump source control block is arranged on the power source oil inlet, a pump source control block oil outlet is formed above the pump source control block, and a piston type energy accumulator is arranged above the pump source control block oil outlet and communicated with an inner cavity of the piston type energy accumulator;
the hydraulic control system also comprises a main oil cylinder and a return cylinder, wherein sliders are connected below the main oil cylinder and the return cylinder, slider displacement sensors are arranged on two sides of each slider, two groups of main oil cylinder pipelines are connected to the upper end of the main oil cylinder, and main cylinder upper cavity oil inlets A1 and main cylinder upper cavity oil inlets A2 are respectively arranged at the tail ends of the two groups of main oil cylinder pipelines;
the oil inlet A1 of the upper cavity of the main cylinder is communicated with an oil inlet of a pressure maintaining power source PA3 through a main cylinder pipeline, a main cylinder rodless cavity is communicated below the oil inlet of the pressure maintaining power source, and the main cylinder rodless cavity is controlled through a main cylinder rodless cavity control block;
the lower part of the oil inlet A2 of the upper cavity of the main cylinder is communicated with a rod cavity of the main cylinder through a pipeline of the main cylinder, and the rod cavity of the main cylinder is controlled by a control block of the rod cavity of the main cylinder;
a liquid filling tank is arranged above the main oil cylinder, the upper end of the main oil cylinder is communicated with the lower part of the liquid filling tank through a main oil cylinder pipeline, a pressure relay is arranged on the main oil cylinder pipeline between the main oil cylinder and the liquid filling tank, a liquid filling valve control power source PA4 is arranged on one side of the pressure relay, the upper part of the main oil cylinder is communicated with an oil inlet of the liquid filling valve control power source through the main oil cylinder pipeline, a liquid filling valve is arranged on the main oil cylinder pipeline between the main oil cylinder and the liquid filling tank, and the liquid filling valve is arranged below the pressure relay;
the lower end of the return cylinder is connected with two return cylinder pipelines, and the tail ends of the two return cylinder pipelines are respectively provided with a return cylinder lower cavity oil inlet B1 and a return cylinder lower cavity oil inlet B2.
Preferably, an energy accumulator oil-filling limiting block is arranged in the piston type energy accumulator, a gas cylinder group is arranged above the piston type energy accumulator, a gas cylinder safety valve is arranged below the gas cylinder group, and the gas cylinder group is fixedly connected with the piston type energy accumulator through a gas cylinder connecting block.
Preferably, an energy accumulator control block is arranged on one side above the pump source control block, the lower side of the energy accumulator control block is communicated with the upper side of the pump source control block through an energy accumulator pipeline, the right side of the energy accumulator control block is communicated with the lower side of the piston type energy accumulator through an energy accumulator pipeline, and two ends of the energy accumulator pipeline between the energy accumulator control block and the piston type energy accumulator are respectively connected with an oil outlet of the pump source control block and an oil inlet of the energy accumulator control block; the demolding power source PA4 is arranged on the left side of the energy accumulator control block, the energy accumulator control block is communicated with an oil inlet of the demolding power source PA4 through an energy accumulator pipeline, and an oil outlet of the energy accumulator control block above the demolding power source PA4 is communicated with the lower portion of a rod cavity of the master cylinder through a master cylinder pipeline.
Preferably, the accumulator control block and the accumulator pipeline connected with the accumulator control block are sequentially provided with a safety valve, an accumulator oil opening plug, a pressure release plug and an accumulator oil port pressure sensor, the pressure release plug is provided with a pressure release plug pilot control valve, the accumulator oil opening plug is provided with an accumulator oil opening plug pilot control valve, and the pressure release plug pilot control valve and the accumulator oil opening plug pilot control valve are respectively provided with an electromagnet 3Y12 and an electromagnet 3Y 13.
Preferably, the master cylinder rodless cavity control block and a master cylinder pipeline connected with the master cylinder rodless cavity control block are sequentially provided with a pressure oil opening or closing plug-in, a large-flow proportional cartridge valve, a small-flow high-frequency response proportional valve, a master cylinder unloading plug-in and a master cylinder upper cavity pressure sensor, one side of the pressure oil opening or closing plug-in is provided with a pressure oil opening or closing pilot control valve, one side of the master cylinder unloading plug-in is provided with a master cylinder unloading plug-in pilot control valve, and the pressure oil opening or closing pilot control valve, the large-flow proportional cartridge valve, the small-flow high-frequency response proportional valve and the master cylinder unloading plug-in pilot control valve are respectively provided with an electromagnet 3Y3.2, an electromagnet 3Y7, an electromagnet 3Y6 and an electromagnet 3Y 14.
Preferably, the master cylinder rod cavity control block and the main cylinder pipeline connected with the master cylinder rod cavity control block are sequentially provided with a safety valve, a supporting pressure regulating valve, a master cylinder rod cavity supporting plug-in, a throttle valve, a two-position four-way reversing valve, a lower cavity speed regulating plug-in and a master cylinder lower cavity oil inlet control plug-in; a main cylinder rod cavity pressure regulating plug-in pilot control valve is arranged below one side of the supporting and pressure regulating valve in a matching manner, a main cylinder rod cavity supporting plug-in pilot control valve is arranged above one side of the main cylinder rod cavity supporting plug-in, a main cylinder rod cavity is arranged below one side of the main cylinder rod cavity supporting plug-in, a lower cavity speed regulating plug-in pilot control valve and a lower cavity large-flow proportional plug-in valve are arranged above one side of the lower cavity speed regulating plug-in a matching manner, and a main cylinder lower cavity oil inlet control plug-in pilot control valve is arranged below one side of the main cylinder lower cavity oil inlet control plug-in a matching manner; and the safety valve, the master cylinder rod cavity pressure regulating plug pilot control valve, the two-position four-way reversing valve, the lower cavity speed regulating plug pilot control valve, the lower cavity high-flow proportional plug valve and the master cylinder lower cavity oil inlet control plug pilot control valve are respectively provided with an electromagnet 3Y5, an electromagnet 3Y1, an electromagnet 3Y9, an electromagnet 3Y2, an electromagnet 3Y4 and an electromagnet 3Y 3.1.
Preferably, the four-corner leveling system comprises 4 groups of synchronous cylinders and 4 groups of leveling cylinders, a synchronous cylinder pressure sensor is arranged below the four groups of synchronous cylinders, a lower cross beam is arranged on the hydraulic press, the four leveling cylinders are respectively arranged on four corners of the lower cross beam, the upper plane of a piston rod of each leveling cylinder corresponds to four opposite angles of a sliding block in the hydraulic press, and the synchronous cylinders are communicated with the leveling cylinders through oil supply pipelines;
the four groups of the synchronous cylinders are respectively a 1# synchronous cylinder, a 2# synchronous cylinder, a 3# synchronous cylinder and a 4# synchronous cylinder, and the four groups of the leveling cylinders are respectively a 1# leveling cylinder, a 2# leveling cylinder, a 3# leveling cylinder and a 4# leveling cylinder;
the oil inlet of the 1# synchronous cylinder, the oil inlet of the 2# synchronous cylinder, the oil inlet of the 3# synchronous cylinder and the oil inlet of the 4# synchronous cylinder are respectively arranged at the lower sides of the 1# synchronous cylinder, the 2# synchronous cylinder, the 3# synchronous cylinder and the 4# synchronous cylinder, and the oil outlet of the 1# synchronous cylinder, the oil outlet of the 2# synchronous cylinder, the oil outlet of the 3# synchronous cylinder and the oil outlet of the 4# synchronous cylinder are respectively arranged at the upper sides of the 1# synchronous cylinder, the 2# synchronous cylinder, the 3# synchronous cylinder and the 4# synchronous cylinder.
Preferably, synchronous cylinder charging pressure control blocks are arranged below the four groups of synchronous cylinders, a pressure adjusting insert is arranged above the synchronous cylinder charging pressure control blocks, a pressure adjusting insert pilot control valve is arranged on one side above the pressure adjusting insert in a matching manner, a high-pressure overflow valve and a low-pressure overflow valve are arranged on one side above the pressure adjusting insert, a synchronous cylinder oil inlet end oil drainage control block is arranged on one side of the pressure adjusting insert, and a two-position two-way reversing valve A is arranged below the synchronous cylinder oil inlet end oil drainage control block; and the pressure regulating plug-in pilot control valve and the two-position two-way reversing valve A are respectively provided with an electromagnet 2Y5 and an electromagnet 3Y 9.1.
Preferably, a 1# leveling cylinder displacement sensor, a 2# leveling cylinder displacement sensor, a 3# leveling cylinder displacement sensor and a 4# leveling cylinder displacement sensor are sequentially arranged on the left side above the 1# leveling cylinder, the 2# leveling cylinder, the 3# leveling cylinder and the 4# leveling cylinder, and leveling cylinder oil return pipes are sequentially connected to the right side above the 1# leveling cylinder, the 2# leveling cylinder, the 3# leveling cylinder and the 4# leveling cylinder; the lower parts of the 1# leveling cylinder, the 2# leveling cylinder, the 3# leveling cylinder and the 4# leveling cylinder are connected with a 1# leveling cylinder pressure sensor, a 2# leveling cylinder pressure sensor, a 3# leveling cylinder pressure sensor and a 4# leveling cylinder pressure sensor through leveling cylinder pipelines in sequence, and the 1# leveling cylinder pressure sensor, the 2# leveling cylinder pressure sensor, the 3# leveling cylinder pressure sensor, the 4# leveling cylinder pressure sensor and a 1# leveling cylinder displacement sensor, a 2# leveling cylinder displacement sensor, a 3# leveling cylinder displacement sensor and a 4# leveling cylinder displacement sensor are respectively installed at four corners of a lower cross beam of the hydraulic machine and are electrically connected with a motion controller;
the leveling cylinder pipeline corresponding to the 1# leveling cylinder, the 2# leveling cylinder, the 3# leveling cylinder and the 4# leveling cylinder is sequentially provided with a 1# leveling cylinder high-frequency-response proportional valve, a 2# leveling cylinder high-frequency-response proportional valve, a 3# leveling cylinder high-frequency-response proportional valve and a 4# leveling cylinder high-frequency-response proportional valve, and the 1# leveling cylinder high-frequency-response proportional valve, the 2# leveling cylinder high-frequency-response proportional valve, the 3# leveling cylinder high-frequency-response proportional valve and the 4# leveling cylinder high-frequency-response proportional valve are electrically connected with the motion controller;
the leveling cylinder main pipelines corresponding to the 1# leveling cylinder high-frequency response proportional valve, the 2# leveling cylinder high-frequency response proportional valve, the 3# leveling cylinder high-frequency response proportional valve and the 4# leveling cylinder high-frequency response proportional valve are respectively provided with a one-way valve, and the leveling cylinder main pipelines corresponding to the 1# leveling cylinder high-frequency response proportional valve, the 2# leveling cylinder high-frequency response proportional valve, the 3# leveling cylinder high-frequency response proportional valve and the 4# leveling cylinder high-frequency response proportional valve are respectively provided with a stripper cylinder priming liquid pressure sensor and a two-position three-way reversing ball valve;
and electromagnets 5Y5, 5Y4, 5Y3, 5Y2 and 5Y1 are respectively arranged in the 1# leveling cylinder high-frequency-response proportional valve, the 2# leveling cylinder high-frequency-response proportional valve, the 3# leveling cylinder high-frequency-response proportional valve, the 4# leveling cylinder high-frequency-response proportional valve and the two-position three-way reversing ball valve.
Preferably, fluid cooling system includes filter equipment, cooling power source P communicates with the filter equipment is inside through supplying oil pipe way respectively, two logical switching-over valve B and water cooler have set gradually on the oil pipe way of filter equipment top, be provided with hot water export and cold water export on the pipeline that corresponds between two logical switching-over valve B and the water cooler respectively, be provided with high liquid level controller and low liquid level controller in the oil tank, still be provided with air cleaner and temperature sensor in the oil tank.
Compared with the prior art, the invention provides a hydraulic control system of a composite material, which has the following beneficial effects:
(1) the hydraulic control system is controlled by an energy accumulator system, the installed power is reduced by more than 50%, and the running speed of the sliding block is increased under low energy consumption by adopting a dynamic grading technology and a proportional servo control technology; meanwhile, the high-frequency-response cartridge valve is adopted to control the slide block, an acceleration curve and a deceleration curve are optimized, the slide block can run quickly, the quick deceleration of the slide block is larger than 800mm/s, the full-load pressing speed reaches 1-60mm/s, the international advanced similar product level is 1.5 times that of the current domestic product, and the high-speed operation mode can be applied to a large-tonnage hydraulic machine.
(2) Compared with the traditional hydraulic control system, the hydraulic control system for the composite material has the advantages that the installed power is reduced by more than 50%, the noise is reduced by more than 30 decibels, and the control precision and the forming quality of the pressure and the speed of equipment are improved.
(3) The invention realizes the wide-range working speed of 1-60%, greatly improves the working speed of the hydraulic press under the condition of not increasing the motor power and the oil pump discharge capacity, and averagely improves the speed by 50%.
(4) The invention realizes the variable pressure control technology, realizes the accurate pressure control process by the variable pressure control technology in the pressure holding process, prevents the local premature curing of the composite material, improves the uniformity rate of products, improves the pressure accuracy from 0.4MPa to 0.05MPa, and develops the pressure control which can realize more than 2 sections by the original one-section pressure control.
(5) According to the invention, high-precision control can be realized through a high-precision pressure and displacement motion control algorithm, and meanwhile, a high-reliability synchronous cylinder structure is applied to the four-corner leveling function, so that the product quality is improved; the four-corner leveling system overcomes the influence of unbalance loading on the parallelism of an upper die and a lower die, and the leveling precision of the servo leveling and synchronous cylinder leveling system based on motion control reaches 0.05 mm.
Drawings
FIG. 1 is an overall hydraulic schematic of a composite hydraulic control system according to the present invention;
FIG. 2 is a hydraulic schematic diagram of an accumulator control block in a composite hydraulic control system according to the present invention;
FIG. 3 is a hydraulic schematic diagram of a master cylinder rodless cavity control block in a composite hydraulic control system according to the present invention;
FIG. 4 is a hydraulic schematic diagram of a master cylinder rod cavity control block in a composite hydraulic control system according to the present invention;
FIG. 5 is a hydraulic schematic diagram of a four corner leveling system in a composite hydraulic control system according to the present invention;
fig. 6 is a schematic diagram of an oil cooling system in a hydraulic control system of a composite material according to the present invention.
The reference numbers in the figures illustrate: 1. an oil tank; 2. a power source P1; 3. a power source P2; 4. a power source oil inlet; 5. a power source oil inlet; 6. a pump source control block; 7. an oil outlet of the pump source control block; 8. an oil inlet of the energy accumulator control block; 9. a piston accumulator; 10. an accumulator oil charge limit block; 11. a gas cylinder safety valve; 12. a gas cylinder connecting block; 13. a gas cylinder group; 14. a master cylinder rodless cavity control block; 14-1, a pressure oil opening or closing plug-in; 14-2, opening or closing a pilot control valve by pressure oil; 14-3, a one-way valve; 14-4, a large-flow proportional cartridge valve; 14-5, a small-flow high-frequency response proportional valve; 14-6, a master cylinder unloading plug-in pilot control valve; 14-7, a master cylinder unloading plug-in; 14-8, a master cylinder upper cavity pressure sensor; 15. an oil inlet of a pressure maintaining power source; 16. an oil inlet A1 of an upper cavity of the main cylinder; 17. an oil inlet A2 of an upper cavity of the main cylinder; 18. a master cylinder rod cavity control block; 18. a master cylinder rod cavity control block; 18-1, a safety valve; 18-2, supporting the pressure regulating valve; 18-3, a pilot control valve of a pressure regulating plug-in component of a rod cavity of the main cylinder; 18-5, a master cylinder rod cavity supporting plug-in pilot control valve; 18-6, a master cylinder rod cavity supporting insert; 18-7, master cylinder having rod cavity; 18-8, a throttle valve; 18-9, a two-position four-way reversing valve; 18-10 parts of lower cavity speed regulation plug-in; 18-11, a pilot control valve of the lower cavity speed regulating plug; 18-12, a lower cavity large-flow proportional cartridge valve; 18-13, and feeding oil into a lower cavity of the main cylinder; 18-14, a pilot control valve of a main cylinder lower cavity oil inlet control plug; 19. a liquid filling tank; 20. the liquid filling valve controls an oil inlet of the power source; 21. a pressure relay; 22. a liquid charging valve; 23. a return cylinder; 24. a master cylinder; 25. a slider displacement sensor; 26. a slider; 27. an oil inlet B1 of a lower cavity of the return cylinder; 28. an oil inlet B2 of a lower cavity of the return cylinder; 29. an accumulator control block; 29-1, a safety valve; 29-2, a pressure relief plug pilot control valve; 29-3, an oil liquid opening plug-in component of the energy accumulator; 29-4, a pressure relief insert; 29-5, an accumulator oil port pressure sensor; 29-6, switching on a plug pilot control valve by accumulator oil; 30. an oil outlet of the accumulator control block; 31. a synchronous cylinder charging pressure control block; 32. a pressure regulating insert; 33. a high pressure relief valve; 34. a low pressure relief valve; 35. a pressure regulating insert pilot control valve; 36. 1# synchronous cylinder oil inlet; 37. a synchronous cylinder pressure sensor; 38. an oil outlet of the No. 1 synchronous cylinder; 39. an oil outlet of the No. 2 synchronous cylinder; 40. 2# leveling cylinder pressure sensor; 41. 1# leveling cylinder pressure sensor; 42. 1# leveling cylinder displacement sensor; 43. 1# leveling cylinder; 44. 2# leveling cylinder displacement sensor; 45. 2# leveling cylinder; 46. 3# leveling cylinder displacement sensor; 47. 3# leveling cylinder; 48. 4# leveling cylinder displacement sensor; 49. 4# leveling cylinder; 50. leveling a cylinder oil return pipe; 51. 4# leveling cylinder high frequency response proportional valve; 52. 3# leveling cylinder high frequency response proportional valve; 53. 2# leveling cylinder high frequency response proportional valve; 54. 1# leveling cylinder high frequency response proportional valve; 55. a one-way valve; 56. a mold release cylinder priming liquid pressure sensor; 57. a two-position three-way reversing ball valve; 58. 4# leveling cylinder pressure sensor; 59. 3# leveling cylinder pressure sensor; 60. an oil outlet of the No. 4 synchronous cylinder; 61. an oil inlet of a No. 4 synchronous cylinder; 62. an oil outlet of the No. 3 synchronous cylinder; 63. an oil inlet of a No. 2 synchronous cylinder; 64. an oil inlet of a No. 3 synchronous cylinder; 65. an oil drainage control block at the oil inlet end of the synchronous cylinder; 66. a two-position two-way reversing valve A; 67. a filtration device; 68. a two-position two-way reversing valve B; 69. a water cooler; 70. a hot water outlet; 71. a cold water outlet; 72. a high level controller; 73. a low level controller; 74. an air cleaner; 75. a temperature sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1, a hydraulic control system for a composite material includes a hydraulic control system and an electrical control system, the electrical control system is used for supplying power to the hydraulic control system, the hydraulic control system is applied to a hydraulic machine, and the hydraulic machine is further provided with a four-corner leveling system and an oil cooling system;
the hydraulic control system comprises an oil tank 1, a cooling power source P is arranged on the oil tank 1, the cooling power source P comprises a power source P1(2) and a power source P2(3), a power source oil inlet 5 is arranged above the oil tank 1, a pump source control block 6 is arranged on the power source oil inlet 5, a pump source control block oil outlet 7 is arranged above the pump source control block 6, and a piston type energy accumulator 9 is arranged above the pump source control block oil outlet 7 and communicated with an inner cavity of the piston type energy accumulator 9;
the hydraulic control system also comprises a main oil cylinder 24 and a return cylinder 23, a slide block 26 is connected below the main oil cylinder 24 and the return cylinder 23, slide block displacement sensors 25 are arranged at two sides of the slide block 26, two groups of main oil cylinder pipelines are connected at the upper end of the main oil cylinder 24, and the tail ends of the two groups of main oil cylinder pipelines are respectively provided with a main cylinder upper cavity oil inlet A1(16) and a main cylinder upper cavity oil inlet A2 (17);
an oil inlet A1(16) of an upper cavity of the main cylinder is communicated with an oil inlet 15 of a pressure maintaining power source PA3 through a main oil cylinder pipeline, a main cylinder rodless cavity is communicated below the oil inlet 15 of the pressure maintaining power source, and the main cylinder rodless cavity is controlled through a main cylinder rodless cavity control block 14;
a main cylinder rod cavity is communicated below an oil inlet A2(17) of the upper cavity of the main cylinder through a main cylinder pipeline and is controlled by a main cylinder rod cavity control block 18;
a liquid filling tank 19 is arranged above the main oil cylinder 24, the upper end of the main oil cylinder 24 is communicated with the lower part of the liquid filling tank 19 through a main oil cylinder pipeline, a pressure relay 21 is arranged on the main oil cylinder pipeline between the main oil cylinder 24 and the liquid filling tank 19, a liquid filling valve control power source PA4 is arranged on one side of the pressure relay 21, the upper part of the main oil cylinder 24 is communicated with a liquid filling valve control power source oil inlet 20 through the main oil cylinder pipeline, a liquid filling valve 22 is arranged on the main oil cylinder pipeline between the main oil cylinder 24 and the liquid filling tank 19, and the liquid filling valve 22 is arranged below the pressure relay 21;
the lower end of the return cylinder 23 is connected with two return cylinder pipelines, and the tail ends of the two return cylinder pipelines are respectively provided with a return cylinder lower cavity oil inlet B1(27) and a return cylinder lower cavity oil inlet B2 (28);
the hydraulic control system can realize two working modes of constant pressure and constant stroke; the operation modes of the hydraulic control system include a micro-motion matched mode, manual adjustment, double-hand single-cycle semi-automatic and full-automatic modes, and a selection switch button is adopted for selection:
firstly, inching the matched die, namely pressing a corresponding button to generate action, wherein the main oil cylinder 24 does not pressurize, the slide block 26 slowly descends in a inching manner under the control of a flow valve, and the slide block stops when the hand is loosened; the micro-reverse action presses the corresponding button to generate the slow reverse action of the slide block 26, and the stop action is carried out when the hand is loosened;
adjusting manual operation, namely pressing a corresponding button to generate action, wherein the process is not quick, and the operation is stopped when the hand is released for safety;
thirdly, double-hand-operated single-cycle semi-automatic, namely double-hand button pressing, equipment continuously completes a set of process actions for manual feeding and discharging production;
and fourthly, full-automatic production is realized by matching with an automatic feeding and discharging robot and an upper computer extruder integrated connection control system.
Example 2:
based on example 1, what is different again is:
as shown in fig. 1-4, an energy accumulator oil-filling limiting block 10 is arranged in the piston type energy accumulator 9, a gas cylinder group 13 is arranged above the piston type energy accumulator 9, a gas cylinder safety valve 11 is arranged below the gas cylinder group 13, and the gas cylinder group 13 is fixedly connected with the piston type energy accumulator 9 through a gas cylinder connecting block 12;
an energy accumulator control block 29 is arranged on one side above the pump source control block 6, the lower side of the energy accumulator control block 29 is communicated with the upper side of the pump source control block 6 through an energy accumulator pipeline, the right side of the energy accumulator control block 29 is communicated with the lower side of the piston type energy accumulator 9 through an energy accumulator pipeline, and two ends of the energy accumulator pipeline between the energy accumulator control block 29 and the piston type energy accumulator 9 are respectively connected with an oil outlet 7 of the pump source control block and an oil inlet 8 of the energy accumulator control block; a demolding power source PA4 is arranged on the left side of the energy accumulator control block 29, the energy accumulator control block 29 is communicated with an oil inlet of a demolding power source PA4 through an energy accumulator pipeline, and an oil outlet 30 of the energy accumulator control block above the demolding power source PA4 is communicated with the lower part of a rod cavity of the master cylinder through a master cylinder pipeline;
the energy accumulator control block 29 and an energy accumulator pipeline connected with the energy accumulator control block are sequentially provided with a safety valve 29-1, an energy accumulator oil opening plug 29-3, a pressure relief plug 29-4 and an energy accumulator oil port pressure sensor 29-5, the pressure relief plug 29-4 is provided with a pressure relief plug pilot control valve 29-2, the energy accumulator oil opening plug 29-3 is provided with an energy accumulator oil opening plug pilot control valve 29-6, and the pressure relief plug pilot control valve 29-2 and the energy accumulator oil opening plug pilot control valve 29-6 are respectively provided with an electromagnet 3Y12 and an electromagnet 3Y 13;
a main cylinder rodless cavity control block 14 and a main cylinder pipeline connected with the main cylinder rodless cavity control block are sequentially provided with a pressure oil opening or closing plug-in 14-1, a large-flow proportional plug-in valve 14-4, a small-flow high-frequency response proportional valve 14-5, a main cylinder unloading plug-in 14-7 and a main cylinder upper cavity pressure sensor 14-8, one side of the pressure oil opening or closing plug 14-1 is provided with a pressure oil opening or closing pilot control valve 14-2, one side of the master cylinder unloading plug 14-7 is provided with a master cylinder unloading plug pilot control valve 14-6, an electromagnet 3Y3.2, an electromagnet 3Y7, an electromagnet 3Y6 and an electromagnet 3Y14 are respectively arranged in the pressure oil opening or closing pilot control valve 14-2, the large-flow proportional cartridge valve 14-4, the small-flow high-frequency response proportional valve 14-5 and the master cylinder unloading insert pilot control valve 14-6;
the master cylinder rod cavity control block 18 and a main cylinder pipeline connected with the master cylinder rod cavity control block are sequentially provided with a safety valve 18-1, a supporting pressure regulating valve 18-2, a master cylinder rod cavity supporting plug-in 18-6, a throttle valve 18-8, a two-position four-way reversing valve 18-9, a lower cavity speed regulating plug-in 18-10 and a master cylinder lower cavity oil inlet control plug-in 18-13; a main cylinder rod cavity pressure regulating plug pilot control valve 18-3 is arranged below one side of the supporting and pressure regulating valve 18-2 in a matching manner, a main cylinder rod cavity supporting plug pilot control valve 18-5 is arranged above one side of a main cylinder rod cavity supporting plug 18-6, a main cylinder rod cavity 18-7 is arranged below one side of a main cylinder rod cavity supporting plug 18-6, a lower cavity speed regulating plug pilot control valve 18-11 and a lower cavity large-flow proportional plug valve 18-12 are arranged above one side of a lower cavity speed regulating plug 18-10 in a matching manner, and a main cylinder lower cavity oil inlet control plug pilot control valve 18-14 is arranged below one side of a main cylinder lower cavity oil inlet control plug 18-13 in a matching manner; the safety valve 18-1, the master cylinder rod cavity pressure regulating plug pilot control valve 18-3, the two-position four-way reversing valve 18-9, the lower cavity speed regulating plug pilot control valve 18-11, the lower cavity high-flow proportional cartridge valve 18-12 and the master cylinder lower cavity oil inlet control plug pilot control valve 18-14 are respectively provided with an electromagnet 3Y5, an electromagnet 3Y1, an electromagnet 3Y9, an electromagnet 3Y2, an electromagnet 3Y4 and an electromagnet 3Y 3.1;
the hydraulic control system has the following process flows in a double-hand single circulation mode and a full-automatic mode: robot feeding → slider 26 fast descending → prepressing descending → pressurizing descending → main oil cylinder 24 pressure maintaining → main oil cylinder 24 pressure releasing → demoulding → slider 26 fast returning → slider 26 speed reducing returning → slider 26 stopping → leveling cylinder pushing in place → robot blanking when slider 26 reaches the set working position or pressure, and then a working cycle is finished;
the working principle of the system under a double-hand single-cycle and full-automatic mode is as follows:
when the sliding block 26 is fed quickly, the pump source control block 6 works, the power sources P1(2) and P2(3) are communicated, oil is supplemented to the piston type energy accumulator 9, the electromagnets 3Y1, 3Y2, 3Y4 and 3Y13 are electrified, the sliding block 26 freely falls under the action of gravity to move, negative pressure is formed in a rod-free cavity of the main cylinder, the liquid charging valve 22 is sucked, the rod-free cavity of the main cylinder is automatically charged, the 3Y4 is subjected to closed-loop control through the motion controller in the motion process of the sliding block 26, and the quick falling speed of the system can be controlled;
when the slide block 26 is fast moved to the set position of the slide block displacement sensor 25, the slide block 26 is switched from fast moving to slow moving, the electromagnets 3Y1, 3Y2, 3Y4, 3Y5, 3Y43Y13, 3Y12, 3Y3.2, 3Y6 and 3Y7 are electrified, oil in the piston accumulator 9 supplies oil to the system, in order to meet the requirements of equipment process parameters, the control voltage of the electromagnet 3Y7 in the large-flow proportional cartridge valve 14-4 and the electromagnet 3Y6 in the small-flow high-frequency response proportional cartridge valve 14-5 is adjusted through a motion controller algorithm, the adjustment of the speed domain of the equipment in a lower cavity can be realized, and meanwhile, the pressure of the large-flow proportional cartridge valve 18-12 in the lower cavity of the rod cavity 18-7 of the main cylinder is adjusted, so that the slide block 26 can be fed smoothly.
When the pressure of the slide block 26 is increased to the pressure set by the master cylinder upper cavity pressure sensor 14-8 along with the change of the load, the electromagnets 3Y12, 3Y3.2 and 3Y7 are powered off, the electromagnets 3Y1, 3Y2, 3Y4, 3Y5, 3Y13 and 3Y6 are powered on continuously, the pressure maintaining power source PA3 is powered on to maintain pressure, when the pressure maintaining time is reached, the electromagnets 3Y1, 3Y2, 3Y4, 3Y5, 3Y12, 3Y3.2 and 3Y7 are powered off, the 3Y6 and 3Y14 are powered on, the master cylinder 24 is powered off, when the master cylinder 24 is depressurized to the pressure set by the master cylinder upper cavity pressure sensor 14-8, the liquid filling valve 22 controls the liquid filling valve to control the oil inlet of the power source 20, the liquid filling valve 22 is opened, the slide block 26 is demoulded, and the demoulding power source PA4 and 3Y1 in the master cylinder rod cavity control block 18 are powered on electrically to realize demoulding.
When the mold is released to a set position, the sliding block 26 starts to return, PA1 in the pump source control block 6 is filled with oil during return, 3Y12 and 3Y13 in the energy accumulator control block 29 are electrified, 3Y1, 3Y3.1 and 3Y4 in the master cylinder rod cavity control block 18 are electrified, oil in the lower cavity of the master cylinder 24 is filled with oil to realize return, the sliding block 26 stops after the main cylinder returns to the set position, and an action cycle is completed.
The hydraulic control system adopts: the high-pressure oil pump and the piston type energy accumulator are matched with the high-frequency response proportional valve to drive the oil cylinder, and the piston type energy accumulator provides high-pressure oil during the working stroke and the return stroke, so that the installed power and the use cost can be reduced; the high-frequency response proportional valve is matched with an electric controller to carry out closed-loop control on the movement speed and the pressure of the sliding block 26, so that the flexible acceleration and deceleration of the speed of the sliding block 26 in the process of going down and returning can be realized, and the process requirement of quickly boosting in the process of die assembly can be met;
the hydraulic control system adopts a proportional servo technology and a cartridge valve integrated system, has the characteristics of high response speed, high vibration frequency and the like, can comprehensively and accurately meet the process requirements of equipment, and is simple to adjust, easy to operate, safe and reliable; the operation is stable, no pressure relief and reversing impact exists, the heating is less and the efficiency is high. The installation, debugging and maintenance are convenient;
the oil tank of the hydraulic control system is arranged on the upper side of the machine body, and flexible connection of pipelines is realized through hose connection;
the electrical control system adopts a programmable automatic controller control system, the frequency response of the control system is fast, the requirement of the whole hydraulic system on electrical control is met, and the system is ensured to be accurately, safely, stably and reliably controlled.
Example 3:
based on example 1 and example 2, again, there are differences:
as shown in fig. 5, the four-corner leveling system comprises 4 groups of synchronization cylinders and 4 groups of leveling cylinders, a synchronization cylinder pressure sensor 37 is arranged below the four groups of synchronization cylinders, a lower cross beam is arranged on the hydraulic machine, the four leveling cylinders are respectively arranged on four corners of the lower cross beam, the upper plane of a piston rod of each leveling cylinder corresponds to four opposite corners of a sliding block 26 in the hydraulic machine, and the synchronization cylinders and the leveling cylinders are communicated through oil supply pipelines;
the four groups of synchronous cylinders are respectively a 1# synchronous cylinder, a 2# synchronous cylinder, a 3# synchronous cylinder and a 4# synchronous cylinder, and the four groups of leveling cylinders are respectively a 1# leveling cylinder 43, a 2# leveling cylinder 45, a 3# leveling cylinder 47 and a 4# leveling cylinder 49;
the lower sides of the 1# synchronous cylinder, the 2# synchronous cylinder, the 3# synchronous cylinder and the 4# synchronous cylinder are respectively provided with a 1# synchronous cylinder oil inlet 36, a 2# synchronous cylinder oil inlet 63, a 3# synchronous cylinder oil inlet 64 and a 4# synchronous cylinder oil inlet 61, and the upper sides of the 1# synchronous cylinder, the 2# synchronous cylinder, the 3# synchronous cylinder and the 4# synchronous cylinder are respectively provided with a 1# synchronous cylinder oil outlet 38, a 2# synchronous cylinder oil outlet 39, a 3# synchronous cylinder oil outlet 62 and a 4# synchronous cylinder oil outlet 60;
a synchronous cylinder liquid charging pressure control block 31 is arranged below the four groups of synchronous cylinders, a pressure adjusting insert 32 is arranged above the synchronous cylinder liquid charging pressure control block 31, a pressure adjusting insert pilot control valve 35 is arranged on one side above the pressure adjusting insert 32 in a matching manner, a high-pressure overflow valve 33 and a low-pressure overflow valve 34 are arranged on one side above the pressure adjusting insert 32, a synchronous cylinder oil inlet end oil drainage control block 65 is arranged on one side of the pressure adjusting insert 32, and a two-position two-way reversing valve A66 is arranged below the synchronous cylinder oil inlet end oil drainage control block 65; the pressure regulating plug-in pilot control valve 35 and the two-position two-way reversing valve A66 are respectively provided with an electromagnet 2Y5 and an electromagnet 3Y 9.1;
a 1# leveling cylinder displacement sensor 42, a 2# leveling cylinder displacement sensor 44, a 3# leveling cylinder displacement sensor 46 and a 4# leveling cylinder displacement sensor 48 are sequentially arranged on the left side above the 1# leveling cylinder 43, the 2# leveling cylinder 45, the 3# leveling cylinder 47 and the 4# leveling cylinder 49, and a leveling cylinder oil return pipe 50 is sequentially connected on the right side above the 1# leveling cylinder 43, the 2# leveling cylinder 45, the 3# leveling cylinder 47 and the 4# leveling cylinder 49; the lower parts of the 1# leveling cylinder 43, the 2# leveling cylinder 45, the 3# leveling cylinder 47 and the 4# leveling cylinder 49 are connected with a 1# leveling cylinder pressure sensor 41, a 2# leveling cylinder pressure sensor 40, a 3# leveling cylinder pressure sensor 59 and a 4# leveling cylinder pressure sensor 58 through leveling cylinder pipelines in sequence, and the 1# leveling cylinder pressure sensor 41, the 2# leveling cylinder pressure sensor 40, the 3# leveling cylinder pressure sensor 59, the 4# leveling cylinder pressure sensor 58, a 1# leveling cylinder displacement sensor 42, a 2# leveling cylinder displacement sensor 44, a 3# leveling cylinder displacement sensor 46 and a 4# leveling cylinder displacement sensor 48 are respectively installed at four corners of a lower cross beam of the hydraulic machine and are electrically connected with a motion controller;
a 1# leveling cylinder high-frequency response proportional valve 54, a 2# leveling cylinder high-frequency response proportional valve 53, a 3# leveling cylinder high-frequency response proportional valve 52 and a 4# leveling cylinder high-frequency response proportional valve 51 are sequentially arranged on the leveling cylinder pipelines corresponding to the 1# leveling cylinder 43, the 2# leveling cylinder 45, the 3# leveling cylinder 47 and the 4# leveling cylinder 49, and the 1# leveling cylinder high-frequency response proportional valve 54, the 2# leveling cylinder high-frequency response proportional valve 53, the 3# leveling cylinder high-frequency response proportional valve 52 and the 4# leveling cylinder high-frequency response proportional valve 51 are electrically connected with the motion controller;
a one-way valve 55 is respectively arranged in a leveling cylinder pipeline corresponding to the 1# leveling cylinder high-frequency response proportional valve 54, the 2# leveling cylinder high-frequency response proportional valve 53, the 3# leveling cylinder high-frequency response proportional valve 52 and the 4# leveling cylinder high-frequency response proportional valve 51, and a demolding cylinder priming liquid pressure sensor 56 and a two-position three-way reversing ball valve 57 are arranged in a leveling cylinder main pipeline corresponding to the 1# leveling cylinder high-frequency response proportional valve 54, the 2# leveling cylinder high-frequency response proportional valve 53, the 3# leveling cylinder high-frequency response proportional valve 52 and the 4# leveling cylinder high-frequency response proportional valve 51;
an electromagnet 5Y5, an electromagnet 5Y4, an electromagnet 5Y3, an electromagnet 5Y2 and an electromagnet 5Y1 are respectively arranged in the 1# leveling cylinder high frequency response proportional valve 54, the 2# leveling cylinder high frequency response proportional valve 53, the 3# leveling cylinder high frequency response proportional valve 52, the 4# leveling cylinder high frequency response proportional valve 51 and the two-position three-way reversing ball valve 57;
when the hydraulic press is in an initial state, the leveling cylinder and the synchronous cylinder need to be pre-charged with pressure oil to initial pressure, the liquid-charging pressure control block 31 of the synchronous cylinder feeds the pressure oil from ports P1 and P2, the synchronous cylinder returns to the leftmost side and is ejected to the upper limit position, when a slide block 26 of the hydraulic press moves downwards, a male die arranged on the slide block 26 contacts a workpiece, the leveling cylinder starts to work, the leveling cylinder moves downwards under the action of load along with the increase of the load of the slide block 26, the pressure of a lower cavity of the leveling cylinder is gradually increased along with the change of the load, signals of four pressure sensors arranged corresponding to the cavities and four displacement sensors arranged at four corners of the press are input into a motion controller, the motion controller performs closed-loop control on the four groups of high-frequency proportional valves through PID operation, so as to accurately control the opening degrees of the four groups of high-frequency proportional valves, and ensure that the displacements of the four-corner leveling cylinders are always kept within an allowable range during work, thus ensuring the parallelism of the slide block 26 until the pressing is finished;
the four-corner leveling adopts a synchronous loop of a synchronous hydraulic cylinder, the synchronous cylinder is formed by connecting a plurality of identical hydraulic cylinders in series, the output volumes of all cavities are identical due to the fact that all sections of cavities are identical, parallelism between the sliding block 26 and a workbench can be guaranteed under the condition of unbalance loading, a high-frequency response valve proportional valve is arranged in the lower cavity of the synchronous cylinder, pressure control precision is high, and leveling precision of the sliding block 26 is guaranteed.
Example 4:
based on examples 1 to 3, there are again differences:
as shown in fig. 6, the oil cooling system includes a filtering device 67, the cooling power source P is communicated with the inside of the filtering device 67 through an oil supply pipeline, a two-position two-way directional valve B68 and a water cooler 69 are sequentially arranged on the oil supply pipeline above the filtering device 67, a hot water outlet 70 and a cold water outlet 71 are respectively arranged on the corresponding pipelines between the two-position two-way directional valve B68 and the water cooler 69, a high liquid level controller 72 and a low liquid level controller 73 are arranged in the oil tank 1, and an air cleaner 74 and a temperature sensor 75 are also arranged in the oil tank 1;
when the oil temperature measured by the temperature sensor 75 reaches a set temperature, the cooling power source P starts to work, the two-position two-way valve B68 is automatically switched on, cooling water flows into the water cooler 69 from the cold water outlet 71, the water cooler 69 automatically carries out heat exchange until the oil temperature is reduced to the set temperature, wherein the high liquid level controller 72 is used for alarming at the high liquid level in the oil tank 1, the low liquid level controller 73 is used for alarming at the low liquid level in the oil tank 1, the two controllers are combined to facilitate real-time monitoring of the liquid level, when the liquid level is higher than the high liquid level controller 72 and the liquid level is lower than the low liquid level controller 73, the hydraulic machine alarms to prompt the fault of the hydraulic machine, and the power pump is protected from being damaged due to insufficient oil; the air filter 74 is used for filtering the air sucked and discharged by the oil tank 1 and ensuring that the air quality of the oil tank 1 is within a required value range; the process is an independent cooling process and is not influenced by a main system.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the equivalent replacement or change according to the technical solution and the modified concept of the present invention should be covered by the scope of the present invention.

Claims (10)

1. A hydraulic control system of composite materials, which comprises a hydraulic control system and an electric control system, and is characterized in that: the electric control system is used for supplying power to the hydraulic control system, the hydraulic control system is applied to the hydraulic machine, and the hydraulic machine is also provided with a four-corner leveling system and an oil liquid cooling system;
the hydraulic control system comprises an oil tank (1), a cooling power source P is arranged on the oil tank (1), the cooling power source P comprises a power source P1(2) and a power source P2(3), a power source oil inlet (5) is arranged above the oil tank (1), a pump source control block (6) is arranged on the power source oil inlet (5), a pump source control block oil outlet (7) is arranged above the pump source control block (6), and a piston type energy accumulator (9) is arranged above the pump source control block oil outlet (7) and is communicated with an inner cavity of the piston type energy accumulator (9);
the hydraulic control system further comprises a main oil cylinder (24) and a return cylinder (23), a sliding block (26) is connected below the main oil cylinder (24) and the return cylinder (23), sliding block displacement sensors (25) are arranged on two sides of the sliding block (26), two groups of main oil cylinder pipelines are connected to the upper end of the main oil cylinder (24), and main cylinder upper cavity oil inlets A1(16) and main cylinder upper cavity oil inlets A2(17) are respectively arranged at the tail ends of the two groups of main oil cylinder pipelines;
an oil inlet A1(16) of an upper cavity of the main cylinder is communicated with an oil inlet (15) of a pressure maintaining power source PA3 through a main oil cylinder pipeline, a main cylinder rodless cavity is communicated below the oil inlet (15) of the pressure maintaining power source, and the main cylinder rodless cavity is controlled through a main cylinder rodless cavity control block (14);
a master cylinder rod cavity (18-7) is communicated below the master cylinder upper cavity oil inlet A2(17) through a master cylinder pipeline, and the master cylinder rod cavity (18-7) is controlled through a master cylinder rod cavity control block (18);
a liquid filling tank (19) is arranged above the main oil cylinder (24), the upper end of the main oil cylinder (24) is communicated with the lower part of the liquid filling tank (19) through a main oil cylinder pipeline, a pressure relay (21) is arranged on the main oil cylinder pipeline between the main oil cylinder (24) and the liquid filling tank (19), a liquid filling valve control power source PA4 is arranged on one side of the pressure relay (21), the upper part of the main oil cylinder (24) is communicated with a liquid filling valve control power source oil inlet (20) through the main oil cylinder pipeline, a liquid filling valve (22) is arranged on the main oil cylinder pipeline between the main oil cylinder (24) and the liquid filling tank (19), and the liquid filling valve (22) is arranged below the pressure relay (21);
the lower end of the return cylinder (23) is connected with two sets of return cylinder pipelines, and the tail ends of the return cylinder pipelines are respectively provided with a return cylinder lower cavity oil inlet B1(27) and a return cylinder lower cavity oil inlet B2 (28).
2. A composite hydraulic control system as claimed in claim 1, wherein: an energy accumulator oil-filling limiting block (10) is arranged in the piston type energy accumulator (9), a gas cylinder group (13) is arranged above the piston type energy accumulator (9), a gas cylinder safety valve (11) is arranged below the gas cylinder group (13), and the gas cylinder group (13) is fixedly connected with the piston type energy accumulator (9) through a gas cylinder connecting block (12).
3. A composite hydraulic control system as claimed in claim 2, wherein: an energy accumulator control block (29) is arranged on one side above the pump source control block (6), the lower side of the energy accumulator control block (29) is communicated with the upper side of the pump source control block (6) through an energy accumulator pipeline, the right side of the energy accumulator control block (29) is communicated with the lower side of the piston type energy accumulator (9) through an energy accumulator pipeline, and two ends of the energy accumulator pipeline between the energy accumulator control block (29) and the piston type energy accumulator (9) are respectively connected with an oil outlet (7) of the pump source control block and an oil inlet (8) of the energy accumulator control block; the demolding power source PA4 is arranged on the left side of the energy accumulator control block (29), the energy accumulator control block (29) is communicated with an oil inlet of the demolding power source PA4 through an energy accumulator pipeline, and an oil outlet (30) of the energy accumulator control block above the demolding power source PA4 is communicated with the lower portion of a rod cavity of the master cylinder through a master cylinder pipeline.
4. A composite hydraulic control system according to claim 3, wherein: the energy accumulator control block (29) and an energy accumulator pipeline connected with the energy accumulator control block are sequentially provided with a safety valve (29-1), an energy accumulator oil opening plug-in (29-3), a pressure relief plug-in (29-4) and an energy accumulator oil port pressure sensor (29-5), the pressure relief plug-in (29-4) is provided with a pressure relief plug-in pilot control valve (29-2), the energy accumulator oil opening plug-in (29-3) is provided with an energy accumulator oil opening plug-in pilot control valve (29-6), and the pressure relief plug-in pilot control valve (29-2) and the energy accumulator oil opening plug-in pilot control valve (29-6) are respectively provided with an electromagnet 3Y12 and an electromagnet 3Y 13.
5. The hydraulic control system of claim 4, wherein: the master cylinder rodless cavity control block (14) and a main cylinder pipeline connected with the master cylinder rodless cavity control block are sequentially provided with a pressure oil opening or closing plug-in (14-1), a high-flow proportional plug-in valve (14-4), a low-flow high-frequency response proportional valve (14-5), a master cylinder unloading plug-in (14-7) and a master cylinder upper cavity pressure sensor (14-8), one side of the pressure oil opening or closing plug-in (14-1) is provided with a pressure oil opening or closing pilot control valve (14-2), one side of the master cylinder unloading plug-in (14-7) is provided with a master cylinder unloading plug-in pilot control valve (14-6), and electromagnets 3Y3.2 are respectively arranged in the pressure oil opening or closing pilot control valve (14-2), the high-flow proportional plug-in (14-4), the low-flow high-frequency response proportional valve (14-5) and the master cylinder unloading plug-in (14-6), Electromagnet 3Y7, electromagnet 3Y6, and electromagnet 3Y 14.
6. The hydraulic control system of claim 5, wherein: the master cylinder rod cavity control block (18) and a main cylinder pipeline connected with the master cylinder rod cavity control block are sequentially provided with a safety valve (18-1), a supporting pressure regulating valve (18-2), a master cylinder rod cavity supporting plug-in (18-6), a throttle valve (18-8), a two-position four-way reversing valve (18-9), a lower cavity speed regulating plug-in (18-10) and a master cylinder lower cavity oil inlet control plug-in (18-13); a main cylinder rod cavity pressure regulating plug-in pilot control valve (18-3) is arranged below one side of the supporting and pressure regulating valve (18-2) in a matching manner, a main cylinder rod cavity supporting plug-in pilot control valve (18-5) is arranged above one side of the main cylinder rod cavity supporting plug-in (18-6), a main cylinder rod cavity (18-7) is arranged below one side of the main cylinder rod cavity supporting plug-in (18-6), a lower cavity speed regulating plug-in pilot control valve (18-11) and a lower cavity large-flow proportional plug-in valve (18-12) are arranged above one side of the lower cavity speed regulating plug-in (18-10) in a matching manner, and a main cylinder lower cavity oil inlet control plug-in pilot control valve (18-14) is arranged below one side of the main cylinder oil inlet control plug-in (18-13) in a matching manner; the safety valve (18-1), the master cylinder rod cavity pressure regulating plug-in pilot control valve (18-3), the two-position four-way reversing valve (18-9), the lower cavity speed regulating plug-in pilot control valve (18-11), the lower cavity high-flow proportional plug-in valve (18-12) and the master cylinder lower cavity oil inlet control plug-in pilot control valve (18-14) are respectively provided with an electromagnet 3Y5, an electromagnet 3Y1, an electromagnet 3Y9, an electromagnet 3Y2, an electromagnet 3Y4 and an electromagnet 3Y 3.1.
7. A hydraulic control system for a composite material as claimed in claim 1 or 6, wherein: the four-corner leveling system comprises 4 groups of synchronous cylinders and 4 groups of leveling cylinders, a synchronous cylinder pressure sensor (37) is arranged below the four groups of synchronous cylinders, a lower cross beam is arranged on the hydraulic press, the four leveling cylinders are respectively arranged on four corners of the lower cross beam, the upper plane of a piston rod of each leveling cylinder corresponds to four opposite angles of a sliding block (26) in the hydraulic press, and the synchronous cylinders are communicated with the leveling cylinders through oil supply pipelines;
the four groups of the synchronous cylinders are respectively a 1# synchronous cylinder, a 2# synchronous cylinder, a 3# synchronous cylinder and a 4# synchronous cylinder, and the four groups of the leveling cylinders are respectively a 1# leveling cylinder (43), a 2# leveling cylinder (45), a 3# leveling cylinder (47) and a 4# leveling cylinder (49);
the oil inlet (36) of the 1# synchronous cylinder, the oil inlet (63) of the 2# synchronous cylinder, the oil inlet (64) of the 3# synchronous cylinder and the oil inlet (61) of the 4# synchronous cylinder are respectively formed in the lower sides of the 1# synchronous cylinder, the 2# synchronous cylinder, the oil outlet (38) of the 1# synchronous cylinder, the oil outlet (39) of the 2# synchronous cylinder, the oil outlet (62) of the 3# synchronous cylinder and the oil outlet (60) of the 4# synchronous cylinder are respectively formed in the upper sides of the 1# synchronous cylinder, the 2# synchronous cylinder, the 3# synchronous cylinder and the 4# synchronous cylinder.
8. The hydraulic control system of claim 7, wherein: a synchronous cylinder liquid charging pressure control block (31) is arranged below the four groups of synchronous cylinders, a pressure adjusting plug-in (32) is arranged above the synchronous cylinder liquid charging pressure control block (31), a pressure adjusting plug-in pilot control valve (35) is arranged on one side above the pressure adjusting plug-in (32) in a matching manner, a high-pressure overflow valve (33) and a low-pressure overflow valve (34) are arranged on one side above the pressure adjusting plug-in (32), a synchronous cylinder oil inlet end oil drainage control block (65) is arranged on one side of the pressure adjusting plug-in (32), and a two-position two-way reversing valve A (66) is arranged below the synchronous cylinder oil inlet end oil drainage control block (65); and an electromagnet 2Y5 and an electromagnet 3Y9.1 are respectively arranged in the pressure regulating plug-in pilot control valve (35) and the two-position two-way reversing valve A (66).
9. The hydraulic control system of claim 8, wherein: a 1# leveling cylinder displacement sensor (42), a 2# leveling cylinder displacement sensor (44), a 3# leveling cylinder displacement sensor (46) and a 4# leveling cylinder displacement sensor (48) are sequentially arranged on the left side above the 1# leveling cylinder (43), the 2# leveling cylinder (45), the 3# leveling cylinder (47) and the 4# leveling cylinder (49), and leveling cylinder oil return pipes (50) are sequentially connected on the right side above the 1# leveling cylinder (43), the 2# leveling cylinder (45), the 3# leveling cylinder (47) and the 4# leveling cylinder (49); the lower parts of the 1# leveling cylinder (43), the 2# leveling cylinder (45), the 3# leveling cylinder (47) and the 4# leveling cylinder (49) are sequentially connected with a 1# leveling cylinder pressure sensor (41), a 2# leveling cylinder pressure sensor (40), a 3# leveling cylinder pressure sensor (59) and a 4# leveling cylinder pressure sensor (58) through leveling cylinder pipelines, and the 1# leveling cylinder pressure sensor (41), the 2# leveling cylinder pressure sensor (40), the 3# leveling cylinder pressure sensor (59), the 4# leveling cylinder pressure sensor (58), a 1# leveling cylinder displacement sensor (42), a 2# leveling cylinder displacement sensor (44), a 3# leveling cylinder displacement sensor (46) and a 4# leveling cylinder displacement sensor (48) are respectively installed at four corners of a lower cross beam of the hydraulic machine and are electrically connected with a motion controller;
a 1# leveling cylinder high-frequency response proportional valve (54), a 2# leveling cylinder high-frequency response proportional valve (53), a 3# leveling cylinder high-frequency response proportional valve (52) and a 4# leveling cylinder high-frequency response proportional valve (51) are sequentially arranged on leveling cylinder pipelines corresponding to the 1# leveling cylinder (43), the 2# leveling cylinder (45), the 3# leveling cylinder (47) and the 4# leveling cylinder (49), and the 1# leveling cylinder high-frequency response proportional valve (54), the 2# leveling cylinder high-frequency response proportional valve (53), the 3# leveling cylinder high-frequency response proportional valve (52) and the 4# leveling cylinder high-frequency response proportional valve (51) are electrically connected with a motion controller;
a one-way valve (55) is respectively arranged in a leveling cylinder pipeline corresponding to the 1# leveling cylinder high-frequency response proportional valve (54), the 2# leveling cylinder high-frequency response proportional valve (53), the 3# leveling cylinder high-frequency response proportional valve (52) and the 4# leveling cylinder high-frequency response proportional valve (51), and a demoulding cylinder pre-filling pressure sensor (56) and a two-position three-way reversing ball valve (57) are arranged in a leveling cylinder main pipeline corresponding to the 1# leveling cylinder high-frequency response proportional valve (54), the 2# leveling cylinder high-frequency response proportional valve (53), the 3# leveling cylinder high-frequency response proportional valve (52) and the 4# leveling cylinder high-frequency response proportional valve (51);
the 1# leveling cylinder high-frequency-response proportional valve (54), the 2# leveling cylinder high-frequency-response proportional valve (53), the 3# leveling cylinder high-frequency-response proportional valve (52), the 4# leveling cylinder high-frequency-response proportional valve (51) and the two-position three-way reversing ball valve (57) are respectively provided with an electromagnet 5Y5, an electromagnet 5Y4, an electromagnet 5Y3, an electromagnet 5Y2 and an electromagnet 5Y 1.
10. A composite hydraulic control system as claimed in claim 1, wherein: fluid cooling system includes filter equipment (67), cooling power source P is through supplying oil pipe way and filter equipment (67) inside intercommunication, the oil pipe way of filter equipment (67) top has set gradually two-way switching-over valve B (68) and water cooler (69), be provided with hot water outlet (70) and cold water export (71) on the pipeline that corresponds between two-way switching-over valve B (68) and the water cooler (69) respectively, be provided with high liquid level controller (72) and low liquid level controller (73) in oil tank (1), still be provided with air cleaner (74) and temperature sensor (75) in oil tank (1).
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