CN113819098A - Hydraulic control system of hydraulic brick press - Google Patents
Hydraulic control system of hydraulic brick press Download PDFInfo
- Publication number
- CN113819098A CN113819098A CN202111208719.0A CN202111208719A CN113819098A CN 113819098 A CN113819098 A CN 113819098A CN 202111208719 A CN202111208719 A CN 202111208719A CN 113819098 A CN113819098 A CN 113819098A
- Authority
- CN
- China
- Prior art keywords
- oil
- cartridge valve
- cylinder
- pressure
- main
- 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.)
- Withdrawn
Links
- 239000011449 brick Substances 0.000 title claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 238000000465 moulding Methods 0.000 claims 6
- 230000009471 action Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000004044 response Effects 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 239000002828 fuel tank Substances 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Images
Classifications
-
- 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
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- 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
-
- 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
- F15B13/024—Pressure relief valves
-
- 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
- F15B13/027—Check valves
-
- 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
Landscapes
- 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)
- Control Of Presses (AREA)
Abstract
The invention discloses a hydraulic control system of a hydraulic brick press, which comprises a main oil way, a main cylinder loop, a side cylinder loop, a demoulding cylinder loop and a feeding cylinder loop. The cartridge valve replaces the traditional hydraulic slide valve, has the advantages of large flow capacity, small pressure loss (high pressure), small leakage amount, simple work, strong oil stain resistance, low requirement on oil liquid filtering precision, convenience for integration, standardization and the like, and is suitable for a large-flow hydraulic system. The hydraulic control system of the brick machine can realize the actions of forward movement of the feeding cylinder, return of the feeding cylinder, quick downward movement of the main cylinder, main cylinder pressurization, main cylinder pressure maintaining, main cylinder pressure relief, main cylinder return, ejection of the demolding cylinder, demolding cylinder return and the like of the brick machine, and has the advantages of sensitive action, quick response, small impact, large tonnage, high speed, higher production efficiency and strong practicability of the brick machine based on the cartridge valve hydraulic system.
Description
Technical Field
The invention relates to the field of hydraulic control, in particular to a hydraulic control system of a hydraulic brick press.
Background
At present, a traditional hydraulic system of a brick machine is generally controlled by a plate type slide valve, the slide valve control system has small flow and low pressure and slow response, the tonnage of the brick machine is seriously influenced, and equipment cost is increased by increasing the cylinder diameter of an oil cylinder for compensation.
The cartridge valve not only can realize various functions of a common slide valve, but also has the advantages of high integration level, quick response, large flow capacity, high pressure, small leakage, simple and reliable work and the like. Therefore, the hydraulic system of the brick machine based on the cartridge valve system is provided, and is particularly important for improving the tonnage and the production efficiency of the brick machine.
Disclosure of Invention
The invention aims to provide a hydraulic control system of a hydraulic brick press, which adopts a cartridge valve to replace a traditional hydraulic slide valve, can improve the tonnage and the production efficiency of the brick press, and further solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a hydraulic control system of a hydraulic brick press, which comprises:
the main oil way comprises a main oil tank and a high-pressure oil port connected with the main oil tank;
the main cylinder loop comprises a main cylinder, a first direction cartridge valve, a second direction cartridge valve, a liquid filling valve and a liquid filling oil tank, wherein an oil inlet of the first direction cartridge valve is connected with the high-pressure oil port, an oil outlet of the first direction cartridge valve is connected with the main cylinder through the second direction cartridge valve, and the main cylinder is connected with the liquid filling oil tank through the liquid filling valve so as to return oil into the liquid filling oil tank; a pressure relay is connected between the second direction cartridge valve and the main cylinder;
the system comprises a side cylinder loop, a first pressure cartridge valve, a second pressure cartridge valve, a third directional cartridge valve, a fourth directional cartridge valve, a fifth directional cartridge valve and a fourth directional cartridge valve, wherein the side cylinder loop comprises a side cylinder, the third directional cartridge valve, the fourth directional cartridge valve, the fifth directional cartridge valve and the first pressure cartridge valve; an oil inlet of the third direction cartridge valve is connected with the high-pressure oil port, an oil outlet of the third direction cartridge valve is connected with a piston cavity of the side cylinder and an oil inlet of the fourth direction cartridge valve, and an oil outlet of the fourth direction cartridge valve is connected with the main oil tank in a return mode; an oil inlet of the fifth directional cartridge valve is connected with the high-pressure oil port, an oil outlet of the fifth directional cartridge valve is connected with a piston rod cavity of the side cylinder and an oil inlet of the first pressure cartridge valve, and an oil outlet of the first pressure cartridge valve is connected with the main oil tank in a return mode;
the demolding cylinder loop comprises a demolding cylinder, a sixth-direction cartridge valve, a second pressure cartridge valve, a seventh-direction cartridge valve and a third pressure cartridge valve; an oil inlet of the sixth-direction cartridge valve is connected with the high-pressure oil port, an oil outlet of the sixth-direction cartridge valve is connected with a piston cavity of the demolding cylinder and an oil inlet of the second pressure cartridge valve, and an oil outlet of the second pressure cartridge valve is connected with the main oil tank in a return mode; an oil inlet of the seventh direction cartridge valve is connected with the high-pressure oil port, an oil outlet of the seventh direction cartridge valve is connected with a piston rod cavity of the demolding cylinder and an oil inlet of the third pressure cartridge valve, and an oil outlet of the third pressure cartridge valve is connected with the main oil tank in a return mode;
the feeding cylinder loop comprises a feeding cylinder, an eighth direction cartridge valve, a fourth pressure cartridge valve, a ninth direction cartridge valve and a fifth pressure cartridge valve; an oil inlet of the eighth direction cartridge valve is connected with the high-pressure oil port, an oil outlet of the eighth direction cartridge valve is connected with a piston cavity of the feeding cylinder and an oil inlet of the fourth pressure cartridge valve, and an oil outlet of the fourth pressure cartridge valve is connected with the main oil tank in a return mode; an oil inlet of the ninth direction cartridge valve is connected with the high-pressure oil port, an oil outlet of the ninth direction cartridge valve is connected with a piston rod cavity of the feeding cylinder and an oil inlet of the fifth pressure cartridge valve, and an oil outlet of the fifth pressure cartridge valve is connected with the main oil tank in a return mode.
Optionally, the main oil path includes:
the first main oil branch comprises a first oil pump, a sixth pressure cartridge valve and a tenth direction cartridge valve; an oil inlet of the first oil pump is connected with the main oil tank, an oil outlet of the first oil pump is connected with an oil inlet of the sixth pressure cartridge valve and an oil inlet of the tenth direction cartridge valve, an oil return port of the sixth pressure cartridge valve is connected with the main oil tank in a return mode, and an oil outlet of the tenth direction cartridge valve is connected with the high-pressure oil port;
a second main oil branch comprising a second oil pump, a seventh pressure cartridge valve, and an eleventh directional cartridge valve; an oil inlet of the second oil pump is connected with the main oil tank, an oil outlet of the second oil pump is connected with an oil inlet of the seventh pressure cartridge valve and an oil inlet of the eleventh direction cartridge valve, an oil return port of the seventh pressure cartridge valve is connected with the main oil tank in a return mode, and an oil outlet of the eleventh direction cartridge valve is connected with the high-pressure oil port.
Optionally, the first oil pump and the second oil pump are both driven by a motor.
Optionally, the side cylinders include a first side cylinder and a second side cylinder, an oil outlet of the third directional cartridge valve is simultaneously connected to the piston cavity of the first side bar and the piston cavity of the second side bar, and an oil outlet of the fifth directional cartridge valve is connected to the piston rod cavity of the first side bar and the piston rod cavity of the second side bar.
Optionally, the first side cylinder and the second side cylinder are symmetrically distributed on two sides of the main cylinder.
Optionally, the stripper cylinder circuit comprises a plurality of stripper cylinders; and a piston cavity of any demoulding cylinder is connected with an oil outlet of the sixth direction cartridge valve, and a piston rod cavity of any demoulding cylinder is connected with an oil outlet of the seventh direction cartridge valve.
Optionally, the main cylinder loop and the side cylinder loop are provided with a plurality of electromagnetic valves, so that the main cylinder can be quickly lowered, the main cylinder can be pressurized or the main cylinder can be depressurized by regulating the opening and closing of the oil path.
Optionally, the main cylinder is connected back to the main oil tank through a two-position four-way solenoid valve, and when the main cylinder is depressurized, part of oil in the upper cavity of the main cylinder returns to the main oil tank through the two-position four-way solenoid valve.
Optionally, the demolding cylinder loop is provided with a plurality of electromagnetic valves to realize ejection of the demolding cylinder or retraction of the demolding cylinder by controlling on and off of the oil path.
Optionally, a plurality of electromagnetic valves are arranged on the feeding cylinder loop to realize the forward movement or the return of the feeding cylinder by regulating and controlling the on/off of the oil path.
Optionally, any one of the electromagnetic valves may be a two-position four-way reversing electromagnetic valve.
Compared with the prior art, the invention has the following technical effects:
the fast and efficient hydraulic control system of the brick press provided by the invention replaces the traditional hydraulic slide valve with the cartridge valve, has the advantages of large flow capacity, small pressure loss (high pressure), small leakage amount, simple work, strong oil stain resistance, low requirement on oil liquid filtering precision, convenience for integration, standardization and the like, and is suitable for a large-flow hydraulic system. The hydraulic control system of the brick machine can realize the actions of forward movement of the feeding cylinder, return of the feeding cylinder, quick downward movement of the main cylinder, main cylinder pressurization, main cylinder pressure maintaining, main cylinder pressure relief, main cylinder return, ejection of the demolding cylinder, demolding cylinder return and the like of the brick machine, and has the advantages of sensitive action, quick response, small impact, large tonnage, high speed, higher production efficiency and strong practicability of the brick machine based on the cartridge valve hydraulic system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a hydraulic schematic diagram of a hydraulic control system of a brick machine, which is disclosed by the embodiment of the invention.
Wherein the reference numerals are: 1. a first oil pump; 2. a second oil pump; 3. a sixth pressure cartridge valve; 4. a tenth direction cartridge valve; 5. an eleventh directional cartridge valve; 6. a seventh pressure cartridge valve; 7. a second pressure cartridge valve; 8. a sixth directional cartridge valve; 9. a third pressure cartridge valve; 10. a seventh direction cartridge valve; 11. a threaded cartridge valve; 12. a first pressure cartridge valve; 13. a fifth directional cartridge valve; 14. a third direction cartridge valve; 15. a first direction cartridge valve; 16. a fourth direction cartridge valve; 17. a second direction cartridge valve; 18. a two-position four-way solenoid valve; 19. a two-position four-way solenoid valve; 20. a liquid charging valve; 21. a pressure relay; 23. a master cylinder; 24. a side cylinder; 25. a demolding cylinder; 30. a feeding cylinder; 31. a ninth direction cartridge valve; 32. a fifth pressure cartridge valve; 33. an eighth direction cartridge valve; 34. a fourth pressure cartridge valve; 35. a main oil tank; 36. a liquid-filled oil tank.
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.
One of the objectives of the present invention is to provide a hydraulic control system for a hydraulic brick press, which uses a cartridge valve instead of a conventional hydraulic slide valve to improve the tonnage and production efficiency of the brick press, thereby solving the above-mentioned problems in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 1, the present embodiment provides a hydraulic control system of a hydraulic brick press, which mainly comprises 7 sets of branches:
a group of oil pumps: an oil outlet of the first oil pump 1 is communicated with an oil inlet of the sixth pressure cartridge valve 3 and an oil inlet of the tenth direction cartridge valve 4, an oil return port of the sixth pressure cartridge valve 3 is connected with the main oil tank 35 in a return mode, and an oil outlet of the tenth direction cartridge valve 4 is communicated with a system high-pressure oil port.
Two sets of oil pumps: an oil outlet of the second oil pump 2 is communicated with an oil inlet of the seventh pressure cartridge valve 6 and an oil inlet of the eleventh direction cartridge valve 5, an oil return port of the seventh pressure cartridge valve 6 is connected with the main oil tank 35 in a return mode, and an oil outlet of the eleventh direction cartridge valve 5 is communicated with a system high-pressure oil port.
Master cylinder circuit group: an oil inlet of the first direction cartridge valve 15 is communicated with a high-pressure oil port of the system, an oil outlet of the first direction cartridge valve 15 is communicated with the main cylinder 23 through the second direction cartridge valve 17, and return oil of the main cylinder 23 returns to the liquid filling oil tank 36 through the liquid filling valve 20.
Side cylinder circuit group: an oil inlet of the third direction cartridge valve 14 is communicated with a high-pressure oil port of the system, an oil outlet of the third direction cartridge valve 14 is communicated with a piston cavity of the side cylinder 24 and an oil inlet of the fourth direction cartridge valve 16, and an oil outlet of the fourth direction cartridge valve returns to the main oil tank 35; an oil inlet of the fifth directional cartridge valve 13 is communicated with a high-pressure oil port of the system, an oil outlet of the fifth directional cartridge valve 13 is communicated with a piston rod cavity of the side cylinder 24 and an oil inlet of the first pressure cartridge valve 12, and an oil outlet of the first pressure cartridge valve 12 is connected to the main oil tank 35 in a return mode.
Demoulding cylinder loop group: an oil inlet of the directional cartridge valve 8 is communicated with a high-pressure oil port of the system, an oil outlet of the directional cartridge valve 8 is communicated with a piston cavity of the demoulding cylinder 25 and an oil inlet of the second pressure cartridge valve 7, and an oil outlet of the second pressure cartridge valve 7 is returned to the main oil tank 35; an oil inlet of the seventh direction cartridge valve 10 is communicated with a high-pressure oil port of the system, an oil outlet of the seventh direction cartridge valve 10 is communicated with a piston rod cavity of the demoulding cylinder 25 and an oil inlet of the third pressure cartridge valve 9, and an oil outlet of the third pressure cartridge valve 9 is connected to the main oil tank 35 in a return mode.
Feeding cylinder loop group: an oil inlet of the eighth direction cartridge valve 33 is communicated with a high-pressure oil port of the system, an oil outlet of the eighth direction cartridge valve 33 is communicated with a piston cavity of the feeding cylinder 30 and an oil inlet of the fourth pressure cartridge valve 34, and an oil outlet of the fourth pressure cartridge valve 34 is returned to the main oil tank 35; an oil inlet of the ninth direction cartridge valve 31 is communicated with a high-pressure oil port of the system, an oil outlet of the ninth direction cartridge valve 31 is communicated with a piston rod cavity of the feeding cylinder 30 and an oil inlet of the fifth pressure cartridge valve 32, and an oil outlet of the fifth pressure cartridge valve 32 is returned to the main oil tank 35.
The working principle of the hydraulic system of the present embodiment will be specifically described with reference to fig. 1.
The hydraulic control system of the hydraulic brick press can realize the actions of advancing of the feeding cylinder, returning of the feeding cylinder, quick descending of the main cylinder, pressurization of the main cylinder, pressure maintaining of the main cylinder, pressure relief of the main cylinder, returning of the main cylinder, ejection of the demolding cylinder, retraction of the demolding cylinder and the like of the brick press. Wherein:
advancing of the feed cylinder
When the forward button of the feed cylinder 30 is pressed, the electromagnets of the solenoid valves YV1 and YV15 are energized, and the eighth direction cartridge valve 33 is opened. Oil of the first oil pump 1 enters a piston cavity of the feeding cylinder 30 through the tenth direction cartridge valve 4 and the eighth direction cartridge valve 33, the feeding cylinder 30 moves forward, oil in a piston rod cavity of the feeding cylinder 30 returns to the main oil tank 35 through the fifth pressure cartridge valve 32, and at the moment, the feeding cylinder sends ingredients to a workbench to finish feeding; when the position switch S7 of the feeding cylinder 30 signals, the feeding action is completed and the feeding cylinder 30 is triggered to return to the beginning.
(II) feeding cylinder return
After the position switch S7 of the material feeding cylinder 30 is signaled, the electromagnets of the electromagnetic valves YV1 and YV14 are electrified, and the plug valve 31 in the ninth direction is opened. Oil of the first oil pump 1 enters a piston rod cavity of the feeding cylinder 30 through the tenth direction cartridge valve 4 and the ninth direction cartridge valve 31, the feeding cylinder 30 retreats, oil in the piston cavity of the feeding cylinder 30 returns to the main oil tank 35 through the fourth pressure cartridge valve 34, and the feeding cylinder retreats; when the position switch S6 of the feeding cylinder 30 signals, the feeding action is completed and the main cylinder 23 is triggered to start to move down quickly.
(III) quick descending of master cylinder
When a signal is sent by a position switch S6 of the feeding cylinder 30, electromagnets of electromagnetic valves YV1, YV2, YV4, YV7 and YV10 are electrified, oil of the first oil pump 1 and oil of the second oil pump 2 flow together through a tenth direction cartridge valve 4 and an eleventh direction cartridge valve 5 and enter two side cylinders 24 through a third direction cartridge valve 14, pressure oil passes through a D-type two-position four-way electromagnetic valve to open a liquid filling valve 20, oil in a piston rod cavity of the side cylinder 24 returns to a main oil tank 35 through a first pressure cartridge valve 12, the side cylinder 24 pushes a sliding block to move downwards quickly, oil in the liquid filling oil tank 36 enters a main cylinder 23 through the liquid filling valve 20, and the main cylinder moves downwards quickly; when the master cylinder 23 position switch S2 is signaled, the master cylinder is quickly shifted down to master cylinder pressurization.
(IV) Master Cylinder pressurization
When the position switch S2 of the main cylinder 23 sends a signal, the electromagnets of the electromagnetic valves YV1, YV2, YV4, YV5 and YV9 are electrified, oil of the first oil pump 1 and oil of the second oil pump 2 flow together through the tenth direction cartridge valve 4 and the eleventh direction cartridge valve 5, enter the two side cylinders 24 through the third direction cartridge valve 14, enter the main cylinder 23 through the first direction cartridge valve 15, oil in a piston rod cavity of the side cylinder 24 returns to the main oil tank 35 through the first pressure cartridge valve 12, the main cylinder moves downwards at a slow speed, and the brick press starts a pressing process; when the pressure switch SP1 of the master cylinder 23 is signaled, the master cylinder is entered for pressure maintaining.
(V) master cylinder pressure maintaining
When the pressure of the main cylinder 23 is switched on or off, namely after the pressure relay 21 sends a signal, all the electromagnetic valves in the system are not electrified, and the main cylinder maintains pressure at the moment; and entering the main cylinder for pressure relief after time delay. The pressure relay 21 is preferably an SP1 pressure relay.
(VI) Master Cylinder decompression
After the master cylinder pressure maintaining time delay is finished, the electromagnet of the electromagnetic valve YV6 is electrified, part of oil in the upper cavity of the master cylinder 23 returns to the master oil tank 35 through the two-position four-way electromagnetic valve 18, so that the pressure of the master cylinder 23 is reduced, the liquid charging valve 20 is conveniently opened, and the master cylinder is decompressed; after time delay, the oil enters the main cylinder to return.
(VII) Master Cylinder Return
After the pressure relief time delay of the master cylinder 23 is finished, the electromagnets of the electromagnetic valves YV1, YV2, YV8, YV3 and YV7 are electrified, the oil of the first oil pump 1 passes through the tenth direction cartridge valve 4 and the oil of the second oil pump 2 passes through the eleventh direction cartridge valve 5, is combined and flows through the fifth direction cartridge valve 13 to enter the piston rod cavities of the two side cylinders 24, the oil of the piston cavity of the side cylinder 24 returns to the master oil tank 35 through the fourth direction cartridge valve 16, the oil of the piston cavity of the master cylinder 23 returns to the liquid filling oil tank 36 through the liquid filling valve 20, and the master cylinder starts to return and performs a return process. When the position switch S1 of the master cylinder 23 sends a signal, the return motion of the master cylinder 23 is completed and the ejection of the stripper cylinder is triggered.
(eighth) ejection of the stripper cylinder
After the master cylinder 23 position switch S1 sends a signal, the electromagnets of the electromagnetic valves YV1 and YV11 are energized, the sixth direction cartridge valve 8 is opened, the oil of the first oil pump 1 enters the piston cavity of the demolding cylinder 25 through the tenth direction cartridge valve 4 and the sixth direction cartridge valve 8, the demolding cylinder 25 is ejected, the oil in the piston rod cavity of the demolding cylinder 25 returns to the master oil tank 35 through the third pressure cartridge valve 9, and at this time, the demolding cylinder of the brick press is extended to perform a demolding process; when the position switch S4 of the stripper cylinder 25 is signaled, the stripping process is complete and triggers the stripper cylinder to retract.
(nine) stripper cylinder retraction
After the position switch S4 of the demoulding cylinder 25 sends a signal, the electromagnets of the electromagnetic valves YV1 and YV12 are electrified, the seventh direction cartridge valve 10 is opened, the oil of the first oil pump 1 enters the piston rod cavity of the demoulding cylinder 25 through the tenth direction cartridge valve 4 and the seventh direction cartridge valve 10, the demoulding cylinder 25 retreats, the oil in the piston cavity of the demoulding cylinder 25 returns to the main oil tank 35 through the second pressure cartridge valve 7, and at the moment, the demoulding cylinder of the brick press retreats to perform a demoulding process; when the position switch S5 of the mold release cylinder 25 is signaled, the mold release retraction process is completed. The threaded cartridge valve 11 is connected to an oil return path between the piston rod cavity of the demolding cylinder 25 and the main oil tank 35, the function of the threaded cartridge valve is similar to that of a one-way valve, when the piston rod cavity of the demolding cylinder 25 is exhausted, oil can be supplemented from the main oil tank 35 through the threaded cartridge valve 11, and the threaded cartridge valve 11 can only allow oil in the main oil tank 35 to flow to the piston rod cavity of the demolding cylinder 25 in a one-way mode.
In this embodiment, YV12 and YV11 shown in fig. 1 are electromagnets integrated on the three-position four-way electromagnetic directional valve, and other electromagnetic valves may also be integrated on the two-position four-way electromagnetic directional valve or the three-position four-way electromagnetic directional valve. In the present embodiment, the directional cartridges and the pressure cartridges are preferably two-way cartridges.
In this embodiment, the "main fuel tanks 35" related to the 7 groups of branches may be the same fuel tank or different fuel tanks.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. A hydraulic control system of a hydraulic brick molding press, comprising:
the main oil way comprises a main oil tank (35) and a high-pressure oil port connected with the main oil tank (35);
the hydraulic control system comprises a master cylinder circuit, a hydraulic control system and a control system, wherein the master cylinder circuit comprises a master cylinder (23), a first direction cartridge valve (15), a second direction cartridge valve (17), a liquid filling valve (20) and a liquid filling oil tank (36), an oil inlet of the first direction cartridge valve (15) is connected with a high-pressure oil port, an oil outlet of the first direction cartridge valve (15) is connected with the master cylinder (23) through the second direction cartridge valve (17), and the master cylinder (23) is connected with the liquid filling oil tank (36) through the liquid filling valve (20) so as to return oil into the liquid filling oil tank (36); a pressure relay (21) is connected between the second direction cartridge valve (17) and the master cylinder (23);
a side cylinder circuit, which comprises a side cylinder (24), a third direction cartridge valve (14), a fourth direction cartridge valve (16), a fifth direction cartridge valve (13) and a first pressure cartridge valve (12); an oil inlet of the third direction cartridge valve (14) is connected with the high-pressure oil port, an oil outlet of the third direction cartridge valve (14) is connected with a piston cavity of the side cylinder (24) and an oil inlet of the fourth direction cartridge valve (16), and an oil outlet of the fourth direction cartridge valve (16) is connected with the main oil tank (35) in a return mode; an oil inlet of the fifth directional cartridge valve (13) is connected with the high-pressure oil port, an oil outlet of the fifth directional cartridge valve (13) is connected with a piston rod cavity of the side cylinder (24) and an oil inlet of the first pressure cartridge valve (12), and an oil outlet of the first pressure cartridge valve (12) is connected with the main oil tank (35) in a return mode;
the demolding cylinder circuit comprises a demolding cylinder (25), a sixth-direction cartridge valve (8), a second pressure cartridge valve (7), a seventh-direction cartridge valve (10) and a third pressure cartridge valve (9); an oil inlet of the sixth directional cartridge valve (8) is connected with the high-pressure oil port, an oil outlet of the sixth directional cartridge valve (8) is connected with a piston cavity of the demolding cylinder (25) and an oil inlet of the second pressure cartridge valve (7), and an oil outlet of the second pressure cartridge valve (7) is connected with the main oil tank (35) in a return mode; an oil inlet of the seventh direction cartridge valve (10) is connected with the high-pressure oil port, an oil outlet of the seventh direction cartridge valve (10) is connected with a piston rod cavity of the demolding cylinder (25) and an oil inlet of the third pressure cartridge valve (9), and an oil outlet of the third pressure cartridge valve (9) is connected with the main oil tank (35) in a return mode;
the feeding cylinder circuit comprises a feeding cylinder (30), an eighth direction cartridge valve (33), a fourth pressure cartridge valve (34), a ninth direction cartridge valve (31) and a fifth pressure cartridge valve (32); an oil inlet of the eighth directional cartridge valve (33) is connected with the high-pressure oil port, an oil outlet of the eighth directional cartridge valve (33) is connected with a piston cavity of the feeding cylinder and an oil inlet of the fourth pressure cartridge valve (34), and an oil outlet of the fourth pressure cartridge valve (34) is connected with the main oil tank (35) in a return mode; an oil inlet of the ninth direction cartridge valve (31) is connected with the high-pressure oil port, an oil outlet of the ninth direction cartridge valve (31) is connected with a piston rod cavity of the feeding cylinder (30) and an oil inlet of the fifth pressure cartridge valve (32), and an oil outlet of the fifth pressure cartridge valve (32) is connected with the main oil tank (35) in a return mode.
2. A hydraulic control system for a hydraulic brick molding press as claimed in claim 1 wherein said main oil passage comprises:
the system comprises a first main oil branch, a second main oil branch and a third main oil branch, wherein the first main oil branch comprises a first oil pump (1), a sixth pressure cartridge valve (3) and a tenth direction cartridge valve (4); an oil inlet of the first oil pump (1) is connected with the main oil tank (35), an oil outlet of the first oil pump (1) is connected with an oil inlet of the sixth pressure cartridge valve (3) and an oil inlet of the tenth direction cartridge valve (4), an oil return port of the sixth pressure cartridge valve (3) is connected with the main oil tank (35) in a return mode, and an oil outlet of the tenth direction cartridge valve (4) is connected with the high-pressure oil port;
a second main oil branch comprising a second oil pump (2), a seventh pressure cartridge valve (6) and an eleventh directional cartridge valve (5); the oil inlet of the second oil pump (2) is connected with the main oil tank (35), the oil outlet of the second oil pump (2) is connected with the oil inlet of the seventh pressure cartridge valve (6) and the oil inlet of the eleventh direction cartridge valve (5), the oil return port of the seventh pressure cartridge valve (6) is connected with the main oil tank (35), and the oil outlet of the eleventh direction cartridge valve (5) is connected with the high-pressure oil port.
3. Hydraulic control system for a hydraulic brick press according to claim 2, characterized in that said first oil pump (1) and said second oil pump (2) are both driven by a motor.
4. Hydraulic control system for a hydraulic brick press according to claim 1, characterized in that said side cylinders (24) comprise a first side cylinder and a second side cylinder, the outlet of said third directional cartridge valve (14) connects the piston chamber of said first side bar and the piston chamber of said second side bar simultaneously, and the outlet of said fifth directional cartridge valve (13) connects the piston rod chamber of said first side bar and the piston rod chamber of said second side bar.
5. A hydraulic control system for a hydraulic brick molding press according to any one of claims 1 to 4, wherein the stripper cylinder circuit includes a plurality of stripper cylinders (25); and a piston cavity of any demoulding cylinder (25) is connected with an oil outlet of the sixth direction cartridge valve (8), and a piston rod cavity of any demoulding cylinder (25) is connected with an oil outlet of the seventh direction cartridge valve (10).
6. The hydraulic control system of a hydraulic brick molding press according to any one of claims 1 to 4, wherein a plurality of solenoid valves are provided on each of the main cylinder circuit and the side cylinder circuit to achieve quick lowering of the main cylinder, pressurization of the main cylinder, pressure holding of the main cylinder, or pressure release of the main cylinder by controlling the opening and closing of the oil passages.
7. The hydraulic control system of a hydraulic brick molding press according to any one of claims 1 to 4, wherein the ejection cylinder loop is provided with a plurality of solenoid valves to realize ejection or retraction of the ejection cylinder by controlling the on/off of the oil path.
8. The hydraulic control system of a hydraulic brick molding press according to any one of claims 1 to 4, wherein a plurality of solenoid valves are provided on the feed cylinder circuit to control the opening and closing of the oil path to advance or return the feed cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111208719.0A CN113819098A (en) | 2021-10-18 | 2021-10-18 | Hydraulic control system of hydraulic brick press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111208719.0A CN113819098A (en) | 2021-10-18 | 2021-10-18 | Hydraulic control system of hydraulic brick press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113819098A true CN113819098A (en) | 2021-12-21 |
Family
ID=78920558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111208719.0A Withdrawn CN113819098A (en) | 2021-10-18 | 2021-10-18 | Hydraulic control system of hydraulic brick press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113819098A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115991005A (en) * | 2022-12-28 | 2023-04-21 | 重庆江东机械有限责任公司 | A mold opening oil circuit system and its control method for a stamping die with a nitrogen cylinder |
| CN117553042A (en) * | 2023-12-11 | 2024-02-13 | 佛山市恒力泰机械有限公司 | A hydraulic system for sagger hydraulic equipment |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060233912A1 (en) * | 2005-04-19 | 2006-10-19 | Krauss-Maffei Kunststofftechnik Gmbh | Hydraulic mold clamping unit |
| US20070251400A1 (en) * | 2003-10-09 | 2007-11-01 | Glass Arthur J | Platen Press |
| CN202833369U (en) * | 2012-08-24 | 2013-03-27 | 合肥合锻机床股份有限公司 | High speed servo-control hydraulic system |
| CN202846939U (en) * | 2012-08-24 | 2013-04-03 | 合肥合锻机床股份有限公司 | High-speed hydraulic machine dynamic stepping control system |
| CN105150356A (en) * | 2015-07-31 | 2015-12-16 | 江苏腾宇机械制造有限公司 | Hydraulic control system for brick machine and fully-automatic bidirectionally-pressing hydraulic control method of hydraulic control system |
| CN107756864A (en) * | 2017-10-11 | 2018-03-06 | 华南理工大学 | A kind of hydraulic press |
| CN107893784A (en) * | 2017-12-13 | 2018-04-10 | 安徽天水液压机床科技有限公司 | A kind of multi-cylinder linkage hydraulic system of hydraulic machine |
| CN207500226U (en) * | 2017-10-31 | 2018-06-15 | 山东泰丰智能控制股份有限公司 | Efficient tile press hydraulic control system |
| CN108425915A (en) * | 2018-03-19 | 2018-08-21 | 扬力集团股份有限公司 | The hydraulic system and hydraulic pressure processing method of hydraulic press |
| CN209743272U (en) * | 2019-04-25 | 2019-12-06 | 佛山市集成液压机械有限公司 | Novel oil pressure system of steel wire winding machine |
| CN209781318U (en) * | 2018-12-28 | 2019-12-13 | 江苏华宏科技股份有限公司 | hydraulic system of large scrap press |
| CN110848187A (en) * | 2019-12-13 | 2020-02-28 | 油威力液压科技股份有限公司 | Section steel high-precision straightening electro-hydraulic proportional control loop |
| CN111572082A (en) * | 2020-04-17 | 2020-08-25 | 江苏国力锻压机床有限公司 | Hydraulic processing method for glass fiber reinforced plastic product |
| CN112211863A (en) * | 2020-10-09 | 2021-01-12 | 江苏国力锻压机床有限公司 | Wet-pressing forming servo pump control hydraulic system |
| CN216447208U (en) * | 2021-10-18 | 2022-05-06 | 山东泰丰智能控制股份有限公司 | Hydraulic control system of hydraulic brick press |
-
2021
- 2021-10-18 CN CN202111208719.0A patent/CN113819098A/en not_active Withdrawn
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070251400A1 (en) * | 2003-10-09 | 2007-11-01 | Glass Arthur J | Platen Press |
| US20060233912A1 (en) * | 2005-04-19 | 2006-10-19 | Krauss-Maffei Kunststofftechnik Gmbh | Hydraulic mold clamping unit |
| CN202833369U (en) * | 2012-08-24 | 2013-03-27 | 合肥合锻机床股份有限公司 | High speed servo-control hydraulic system |
| CN202846939U (en) * | 2012-08-24 | 2013-04-03 | 合肥合锻机床股份有限公司 | High-speed hydraulic machine dynamic stepping control system |
| CN105150356A (en) * | 2015-07-31 | 2015-12-16 | 江苏腾宇机械制造有限公司 | Hydraulic control system for brick machine and fully-automatic bidirectionally-pressing hydraulic control method of hydraulic control system |
| CN107756864A (en) * | 2017-10-11 | 2018-03-06 | 华南理工大学 | A kind of hydraulic press |
| CN207500226U (en) * | 2017-10-31 | 2018-06-15 | 山东泰丰智能控制股份有限公司 | Efficient tile press hydraulic control system |
| CN107893784A (en) * | 2017-12-13 | 2018-04-10 | 安徽天水液压机床科技有限公司 | A kind of multi-cylinder linkage hydraulic system of hydraulic machine |
| CN108425915A (en) * | 2018-03-19 | 2018-08-21 | 扬力集团股份有限公司 | The hydraulic system and hydraulic pressure processing method of hydraulic press |
| CN209781318U (en) * | 2018-12-28 | 2019-12-13 | 江苏华宏科技股份有限公司 | hydraulic system of large scrap press |
| CN209743272U (en) * | 2019-04-25 | 2019-12-06 | 佛山市集成液压机械有限公司 | Novel oil pressure system of steel wire winding machine |
| CN110848187A (en) * | 2019-12-13 | 2020-02-28 | 油威力液压科技股份有限公司 | Section steel high-precision straightening electro-hydraulic proportional control loop |
| CN111572082A (en) * | 2020-04-17 | 2020-08-25 | 江苏国力锻压机床有限公司 | Hydraulic processing method for glass fiber reinforced plastic product |
| CN112211863A (en) * | 2020-10-09 | 2021-01-12 | 江苏国力锻压机床有限公司 | Wet-pressing forming servo pump control hydraulic system |
| CN216447208U (en) * | 2021-10-18 | 2022-05-06 | 山东泰丰智能控制股份有限公司 | Hydraulic control system of hydraulic brick press |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115991005A (en) * | 2022-12-28 | 2023-04-21 | 重庆江东机械有限责任公司 | A mold opening oil circuit system and its control method for a stamping die with a nitrogen cylinder |
| CN117553042A (en) * | 2023-12-11 | 2024-02-13 | 佛山市恒力泰机械有限公司 | A hydraulic system for sagger hydraulic equipment |
| CN117553042B (en) * | 2023-12-11 | 2025-11-14 | 佛山市恒力泰机械有限公司 | A hydraulic system for a sagger hydraulic device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107893784B (en) | Hydraulic system of multi-cylinder linkage hydraulic machine | |
| CN201042856Y (en) | Magnetic materials dry pressing shaping oleodynamic press hydraulic system | |
| CN111442001B (en) | Oil circuit structure for double closed-loop control of injection speed and injection force and control mode | |
| CN104948538B (en) | The servo hydraulic system and its construction method of a kind of plate bending machine | |
| CN113819098A (en) | Hydraulic control system of hydraulic brick press | |
| CN103847128A (en) | Hydraulic control system | |
| CN101557893A (en) | Die cast machine and die cast molding method | |
| CN107498813A (en) | A kind of injection machine injection hydraulic circuit and its injection control method for realizing high response injection | |
| CN216447208U (en) | Hydraulic control system of hydraulic brick press | |
| CN114001069A (en) | Hydraulic system of straightening machine and operation method thereof | |
| CN213856861U (en) | Hydraulic system of hydraulic upsetter | |
| CN104307953B (en) | A kind of multistage relief circuit for large-tonnage full-automatic hydraulic fine impact machine controls system | |
| CN108035926A (en) | A kind of application method of multi-cylinder linkage hydraulic system of hydraulic machine | |
| CN102205663A (en) | Numerically-controlled multi-point side-pressing frame hydraulic machine | |
| CN203994599U (en) | A kind of fast hydraulic pressure control device of hydraulic injection molding machine | |
| CN215927950U (en) | Stretcher linkage control system | |
| CN113459558B (en) | A bidirectional brake hydraulic press and its working method | |
| CN104162967B (en) | The fast hydraulic pressure of hydraulic injection molding machine controls device | |
| CN110645234B (en) | Control method of hydraulic system of three-direction shearing and packaging machine | |
| CN105522749B (en) | Hydraulic press pushes adjustable point of oil path block of speed and speed regulating method | |
| CN210034005U (en) | Hydraulic press without impact in return stroke | |
| CN110116453B (en) | Hydraulic control system of block making machine | |
| CN218030861U (en) | Pressure return pressure control oil circuit for injection molding machine mold core | |
| CN208106855U (en) | A kind of hydraulic system of hydraulic bending press | |
| CN216732807U (en) | Hydraulic circuit of injection molding machine mold closing unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20211221 |
|
| WW01 | Invention patent application withdrawn after publication |