CN103203386B - Hydraulic device with multiple oil cylinders in linkage - Google Patents
Hydraulic device with multiple oil cylinders in linkage Download PDFInfo
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- CN103203386B CN103203386B CN201210011790.4A CN201210011790A CN103203386B CN 103203386 B CN103203386 B CN 103203386B CN 201210011790 A CN201210011790 A CN 201210011790A CN 103203386 B CN103203386 B CN 103203386B
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- 239000007924 injection Substances 0.000 claims abstract description 153
- 238000002347 injection Methods 0.000 claims abstract description 153
- 239000003921 oil Substances 0.000 claims description 380
- 238000003032 molecular docking Methods 0.000 claims description 88
- 239000010720 hydraulic oil Substances 0.000 claims description 17
- 238000001125 extrusion Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010001541 Akinesia Diseases 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a hydraulic device with multiple oil cylinders in linkage. The hydraulic device mainly comprises an oscillating oil cylinder, a butt-joint oil cylinder, an injection oil cylinder, a hydraulic pump station, a high-pressure hydraulic control assembly, a medium-pressure hydraulic control assembly, a butt-joint oil cylinder hydraulic control assembly and a return hydraulic control assembly. The medium-pressure hydraulic control assembly supplies medium-pressure oil to the device, the high-pressure hydraulic control assembly supplies high-pressure oil to the device, the butt-joint oil cylinder hydraulic control assembly realizes butt-joint actions, and the return hydraulic control assembly realizes returning actions. The hydraulic device with multiple oil cylinders in linkage has the advantages that firstly, the hydraulic device is compact in structure, and linkage among the multiple oil cylinders can be realized; secondly, actions among the oil cylinders cannot be interfered mutually; thirdly, automatic oil supply of the oil cylinders can be realized during linkage of the oil cylinders, the oil cylinders are stable in changeover action, and hydraulic impact can be eliminated; and fourthly, corresponding interlock and time delay can be added to an electrical system so as to realize flexibility in control.
Description
Technical field
The invention belongs to technical field of hydraulic, be specifically related to the hydraulic means of a kind of Multi-cylinder for inner chamber metal extrusion molding machine injection mechanism interlock.
Background technology
In existing inner chamber metal extrusion molding machine, the injection device of the metal extrusion molding machine of injection device disclosed in Chinese patent CN102059269A, its course of action is as follows: oscillating oil cylinder controls the swing of whole injection device, in swing process, docking oil cylinder and injection oil cylinder need be in extreme lower position, and akinesia; After oscillating oil cylinder backswing, docking oil cylinder and injection oil cylinder all keep plumbness, and now dock oil cylinder rodless cavity and need enter the upwards action of pressure oil drive injection oil cylinder, injection oil cylinder rodless cavity need carry out repairing by hydraulic power unit; After pressure chamber is docked with mould, docking oil cylinder stops action, and now injection oil cylinder needs rodless cavity to enter pressure oil, and injection oil cylinder is injection upwards, and docking oil cylinder rodless cavity need by hydraulic power unit repairing; After injection action completes, the oil-feed of injection oil cylinder rod chamber, the downward action of injection oil cylinder, drives the downward action of docking oil cylinder to get back to initial position together simultaneously.Because the oil cylinder quantity of inner chamber metal extrusion molding machine injection device is many, action is complicated, and hydraulic pressure is large, therefore how to carry out hydraulic control to ensure that all oil cylinders can, according to the sequence of movement work of regulation, be keys of injection device action win or lose.
Summary of the invention
The object of the present invention is to provide the hydraulic means that a kind of Multi-cylinder links, effectively to solve the hydraulic control problem of the injection device of inner chamber metal extrusion molding machine.
For achieving the above object, the present invention adopts following technical scheme:
The hydraulic means of Multi-cylinder interlock, comprises oscillating oil cylinder, docking oil cylinder, injection oil cylinder, hydraulic power unit and hydraulic control device; Described hydraulic control device comprises: high-pressure and hydraulic Control Component, is connected with hydraulic power unit, is provided with high pressure injection and controls oil circuit in it, and the rodless cavity of outlet and injection oil cylinder that described high pressure injection controls oil circuit is connected; Middle pressure Hydraulic Conirol Unit, is connected with hydraulic power unit, is provided with medium-pressure injection and controls oil circuit in it, and the rodless cavity of outlet and injection oil cylinder that described medium-pressure injection controls oil circuit is connected; Docking oil cylinder hydraulic Control Component, its pressure oil oil circuit entrance is connected with hydraulic power unit, and in be respectively equipped with some control oil circuits and some oil return circuits, described some control oil circuits comprise is connected with the rodless cavity of docking oil cylinder first dock and controls oil circuit and dock control oil circuit with dock that the rod chamber of oil cylinder is connected second, described oil return circuit comprise be connected with the rodless cavity docking oil cylinder first dock oil return circuit and be connected with the rod chamber docking oil cylinder second dock oil return circuit; With backhaul Hydraulic Conirol Unit, its pressure oil oil circuit entrance is connected with hydraulic power unit, and in be respectively equipped with some control oil circuits and some oil return circuits, described some control oil circuits comprise the first weave control oil oil circuit be connected with the rodless cavity of oscillating oil cylinder, the oily oil circuit of the second weave control be connected with the rod chamber of oscillating oil cylinder and the injection that is connected with the rod chamber of injection oil cylinder controls oily oil circuit; Described some oil return circuits comprise the first injection oil return circuit be connected with the rodless cavity of injection oil cylinder and the second injection oil return circuit be connected with the rod chamber of injection oil cylinder.
As preferably, described high-pressure and hydraulic Control Component comprises: high-pressure oil passage block, is provided with oil-feed oil circuit and high pressure injection controls oil circuit in it, and the input of described oil-feed oil circuit is connected with hydraulic power unit; At least one high pressure accumulator, is arranged on high-pressure oil passage block and the input controlling oil circuit respectively with the output of oil-feed oil circuit and high pressure injection is connected; With high pressure injection Controlling solenoid valve, to be arranged on high-pressure oil passage block and the injection of series connection access high pressure controls in oil circuit.
Further preferably, the operating pressure of described high pressure accumulator is 300bar.
Further preferably, the quantity of described high pressure accumulator is three.
As preferably, described middle pressure Hydraulic Conirol Unit comprises: middle pressure oil path block, is provided with oil-feed oil circuit and medium-pressure injection controls oil circuit in it, and the input of described oil-feed oil circuit is connected with hydraulic power unit; At least one intermediate-pressure accumulator, is arranged on middle pressure oil path block and the input controlling oil circuit respectively with the output of oil-feed oil circuit and medium-pressure injection is connected; First medium-pressure injection Controlling solenoid valve, is arranged on middle pressure oil path block, and accesses between intermediate-pressure accumulator and medium-pressure injection oil circuit control; With the second medium-pressure injection Controlling solenoid valve, to be arranged on middle pressure oil path block and to access in medium-pressure injection oil circuit control.
Further preferably, the operating pressure of described intermediate-pressure accumulator is 160bar.
Further preferably, the quantity of described intermediate-pressure accumulator is two.
As preferably, described docking oil cylinder hydraulic Control Component comprises: docking oil cylinder hydraulic oil circuit control block, is provided with pressure oil oil circuit, the first docking control oil circuit, the second docking control oil circuit, two the first docking oil return circuits and the second docking oil return circuit in it; First docking Controlling solenoid valve, is arranged on and docks on oil cylinder hydraulic oil circuit control block and connect in access first docking control oil circuit; Second docking Controlling solenoid valve, is arranged on and docks on oil cylinder hydraulic oil circuit control block and connect in access second docking control oil circuit; Two first docking oil return solenoid valves, are arranged on docking oil cylinder hydraulic oil circuit control block and also connect in access one first docking oil return circuit respectively; With the second docking oil return solenoid valve, to be arranged on docking oil cylinder hydraulic oil circuit control block and access second of connecting is docked in oil return circuit.
As preferably, described backhaul Hydraulic Conirol Unit comprises: backhaul hydraulic control oil circuit block, is provided with pressure oil oil circuit, the first weave control oil oil circuit, the second weave control oil oil circuit, injection control oil circuit, the first injection oil return circuit and the second injection oil return circuit in it; First weave control magnetic valve, to be arranged on backhaul hydraulic control oil circuit block and to connect in access first weave control oil oil circuit; Second weave control magnetic valve, to be arranged on backhaul hydraulic control oil circuit block and to connect in access first weave control oil oil circuit; Injection Controlling solenoid valve, is arranged on backhaul hydraulic control oil circuit block and series connection access injection controls in oil circuit; First injection oil return solenoid valve, to be arranged on backhaul hydraulic control oil circuit block and to connect in access first injection oil return circuit; With the second injection oil return solenoid valve, to be arranged on backhaul hydraulic control oil circuit block and to connect in access second injection oil return circuit.
The present invention is by adopting said structure, middle pressure Hydraulic Conirol Unit for device provide middle pressure pressure oil, high-pressure and hydraulic Control Component for device provide high-pressure oil, docking oil cylinder hydraulic Control Component achieves a butt joint action, backhaul Hydraulic Conirol Unit realizes backhaul action, tool has the following advantages: 1, compact conformation, can realize the interlock between multiple oil cylinder; 2, the action between each oil cylinder can not interfere with each other; 3, in each oil cylinder linkage process, this device can realize the automatic repairing of oil cylinder, and each cylinder action switches steadily, eliminates hydraulic shock phenomenon; 4, electrical system can add corresponding interlocking, time delays, thus realizes controlling flexibly.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of hydraulic control device of the present invention.
Fig. 3 is the structural representation of high-pressure and hydraulic Control Component of the present invention.
Fig. 4 is the structural representation of middle pressure Hydraulic Conirol Unit of the present invention.
Fig. 5 is the structural representation of docking oil cylinder hydraulic Control Component of the present invention.
Fig. 6 is the structural representation of backhaul Hydraulic Conirol Unit of the present invention.
In figure:
1-high-pressure and hydraulic Control Component; 11-high-pressure oil passage block; 12-high pressure accumulator; 13-high pressure injection Controlling solenoid valve; 2-middle pressure Hydraulic Conirol Unit; 21-middle pressure oil path block; 22-intermediate-pressure accumulator; 23-the first medium-pressure injection Controlling solenoid valve; 24-the second medium-pressure injection Controlling solenoid valve; 3-docking oil cylinder hydraulic Control Component; 31-docking oil cylinder hydraulic oil circuit control block; 32-the first docking Controlling solenoid valve; 33-the second docking Controlling solenoid valve; 34-the first docking oil return solenoid valve; 35-the second docking oil return solenoid valve; 4-backhaul Hydraulic Conirol Unit; 41-backhaul hydraulic control oil circuit block; 42-the first weave control magnetic valve; 43-the second weave control magnetic valve; 44-injection Controlling solenoid valve; 45-the first injection oil return solenoid valve; 46-the second injection oil return solenoid valve; 5-oscillating oil cylinder; 6-docking oil cylinder; 7-injection oil cylinder; 8-hydraulic power unit.
Now in conjunction with the accompanying drawings and embodiments the present invention is described in further detail.
Detailed description of the invention
As shown in Figures 1 to 6, the hydraulic means of Multi-cylinder interlock of the present invention, primarily of oscillating oil cylinder 5, docking oil cylinder 6, injection oil cylinder 7, hydraulic power unit 8 and hydraulic control device composition, hydraulic control device forms primarily of high-pressure and hydraulic Control Component 1, middle pressure Hydraulic Conirol Unit 2, docking oil cylinder hydraulic Control Component 3 and backhaul Hydraulic Conirol Unit 4.
Described high-pressure and hydraulic Control Component 1 is that the high pressure accumulator 12 of 300bar and high pressure injection Controlling solenoid valve 13 form primarily of high-pressure oil passage block 11, three operating pressures.Be provided with oil-feed oil circuit in high-pressure oil passage block 11 and high pressure injection controls oil circuit, the input of oil-feed oil circuit is connected with hydraulic power unit 8, and the outlet that high pressure injection controls oil circuit is connected with the rodless cavity of injection oil cylinder 7.Three high pressure accumulators 12 are arranged on high-pressure oil passage block 11 and the input controlling oil circuit respectively with the output of oil-feed oil circuit and high pressure injection is connected.High pressure injection Controlling solenoid valve 13 is arranged on high-pressure oil passage block 11 and the injection of series connection access high pressure controls in oil circuit.
Described middle pressure Hydraulic Conirol Unit 2 is that the intermediate-pressure accumulator 22 first medium-pressure injection Controlling solenoid valve 23 of 160bar and the second medium-pressure injection Controlling solenoid valve 24 form primarily of middle pressure oil path block 21, two operating pressures.Be provided with oil-feed oil circuit in middle pressure oil path block 21 and medium-pressure injection controls oil circuit, the input of oil-feed oil circuit is connected with hydraulic power unit 7, and the outlet that medium-pressure injection controls oil circuit is connected with the rodless cavity of injection oil cylinder 7.Two intermediate-pressure accumulators 22 are arranged on middle pressure oil path block 21 and the input controlling oil circuit respectively with the output of oil-feed oil circuit and medium-pressure injection is connected.First medium-pressure injection Controlling solenoid valve 23 to be arranged on middle pressure oil path block and to access between intermediate-pressure accumulator and medium-pressure injection oil circuit control, enters medium-pressure injection oil circuit control in order to the pressure oil controlled in intermediate-pressure accumulator.Second medium-pressure injection Controlling solenoid valve 24 to be arranged on middle pressure oil path block and to access in medium-pressure injection oil circuit control, in order to control the break-make of medium-pressure injection oil circuit control and injection oil cylinder 7 rodless cavity.
Described docking oil cylinder hydraulic Control Component 3 docks Controlling solenoid valve 32, second docking Controlling solenoid valve 33, two first docking oil return solenoid valve 34 primarily of docking oil cylinder hydraulic oil circuit control block 31, first and the second docking oil return solenoid valve 35 forms.Docking oil cylinder hydraulic oil circuit control block 31 be provided with in it pressure oil oil circuit, is connected with the rodless cavity of docking oil cylinder 6 first dock control oil circuit, be connected with the rod chamber docking oil cylinder 6 second dock control oil circuit, two rodless cavities docking oil cylinder 6 respectively with are connected first dock oil return circuit and be connected with the rod chamber docking oil cylinder second dock oil return circuit.Pressure oil oil circuit entrance is connected with hydraulic power unit 8.First docking Controlling solenoid valve 32 is arranged on and docks on oil cylinder hydraulic oil circuit control block 31 and connect in access first docking control oil circuit.Second docking Controlling solenoid valve 33 is arranged on and docks on oil cylinder hydraulic oil circuit control block 31 and connect in access second docking control oil circuit.Two first docking oil return solenoid valves 34 are arranged on docking oil cylinder hydraulic oil circuit control block 31 also connects in access one first docking oil return circuit respectively.Second docking oil return solenoid valve 35 is arranged on docking oil cylinder hydraulic oil circuit control block 31 and access second of connecting is docked in oil return circuit.
Described backhaul Hydraulic Conirol Unit 4 forms primarily of backhaul hydraulic control oil circuit block 41, first weave control magnetic valve 42, second weave control magnetic valve 43, injection Controlling solenoid valve 44, first injection oil return solenoid valve 45 and the second injection oil return solenoid valve 46.Be provided with pressure oil oil circuit in backhaul hydraulic control oil circuit block 41, the second injection oil return circuit that the first weave control oil oil circuit be connected with the rodless cavity of oscillating oil cylinder 5, the oily oil circuit of the second weave control be connected with the rod chamber of oscillating oil cylinder 5, the injection that is connected with the rod chamber of injection oil cylinder 7 control oil circuit, the first injection oil return circuit be connected with the rodless cavity of injection oil cylinder 7 and be connected with the rod chamber of injection oil cylinder 7.Pressure oil oil circuit entrance is connected with hydraulic power unit 8.First weave control magnetic valve 42 to be arranged on backhaul hydraulic control oil circuit block 41 and to connect in access first weave control oil oil circuit.Second weave control magnetic valve 43 to be arranged on backhaul hydraulic control oil circuit block 41 and to connect in access first weave control oil oil circuit.Injection Controlling solenoid valve 44 is arranged on backhaul hydraulic control oil circuit block and series connection access injection controls in oil circuit.First injection oil return solenoid valve 45 to be arranged on backhaul hydraulic control oil circuit block 41 and to connect in access first injection oil return circuit.Second injection oil return solenoid valve 46 to be arranged on backhaul hydraulic control oil circuit block and to connect in access second injection oil return circuit.
The course of work of the present invention is as follows:
In the course of action of oscillating oil cylinder, what inputed to the rodless cavity control oscillating oil cylinder of oscillating oil cylinder 5 by the first weave control magnetic valve 42 controlled pressure oil shows action, is inputed to the back swing motion of the rod chamber control oscillating oil cylinder 5 of oscillating oil cylinder 5 by the second weave control magnetic valve 43 controlled pressure oil; And now dock oil cylinder 6 and injection oil cylinder 7 is all in extreme lower position, can not action.
First docking Controlling solenoid valve 32, second docks oil return solenoid valve 35 and the action simultaneously of the second injection oil return solenoid valve 46, first docking Controlling solenoid valve 32 controls the oil-feed of docking oil cylinder rodless cavity, the oil return of the second docking oil return solenoid valve 35 control docking cylinder rod chamber and the second injection oil return solenoid valve 46 control the oil return of injection oil cylinder rod chamber, and docking oil cylinder drives piston rod (interlock pressure chamber) the upwards action of injection oil cylinder; First injection oil return solenoid valve 45 is now also opened, and hydraulic power unit 8 carries out repairing automatically to injection oil cylinder rodless cavity.The while of first medium-pressure injection Controlling solenoid valve 23 and the second medium-pressure injection Controlling solenoid valve 24, in action control, the oily rodless cavity entering injection oil cylinder of pressure pressure realizes the medium-pressure injection action of injection oil cylinder.The oily rodless cavity entering injection oil cylinder of high pressure injection Controlling solenoid valve 13 action control high-pressure realizes the high pressure injection action of injection oil cylinder.
After injection action completes, injection Controlling solenoid valve 44 and the action simultaneously of the first injection oil return solenoid valve 45, injection Controlling solenoid valve 44 controls the oil-feed of injection oil cylinder rod chamber, and the first injection oil return solenoid valve 45 controls the oil return of injection oil cylinder rodless cavity, injection oil cylinder backhaul.When injection oil cylinder gets back to specified altitude assignment, injection Controlling solenoid valve 44 and the first injection oil return solenoid valve 45 keep electric, the action simultaneously of two first docking oil return solenoid valves 34, control the oil return of two docking oil cylinder rodless cavities, injection oil cylinder drives the piston rod of docking oil cylinder to get back to initial extreme lower position.In time docking oil cylinder and be jammed, the second docking Controlling solenoid valve 33 obtains electric, controls the oil-feed of docking cylinder rod chamber, makes docking oil cylinder rollback to initial extreme lower position.
Claims (9)
1. the hydraulic means of Multi-cylinder interlock, comprise oscillating oil cylinder, docking oil cylinder, injection oil cylinder, hydraulic power unit and hydraulic control device, it is characterized in that, described hydraulic control device comprises:
High-pressure and hydraulic Control Component, is connected with hydraulic power unit, is provided with high pressure injection and controls oil circuit in it, and the rodless cavity of outlet and injection oil cylinder that described high pressure injection controls oil circuit is connected;
Middle pressure Hydraulic Conirol Unit, is connected with hydraulic power unit, is provided with medium-pressure injection and controls oil circuit in it, and the rodless cavity of outlet and injection oil cylinder that described medium-pressure injection controls oil circuit is connected;
Docking oil cylinder hydraulic Control Component, its pressure oil oil circuit entrance is connected with hydraulic power unit, and in be respectively equipped with some control oil circuits and some oil return circuits, described some control oil circuits comprise is connected with the rodless cavity of docking oil cylinder first dock and controls oil circuit and dock control oil circuit with dock that the rod chamber of oil cylinder is connected second, described oil return circuit comprise be connected with the rodless cavity docking oil cylinder first dock oil return circuit and be connected with the rod chamber docking oil cylinder second dock oil return circuit; With
Backhaul Hydraulic Conirol Unit, its pressure oil oil circuit entrance is connected with hydraulic power unit, and in be respectively equipped with some control oil circuits and some oil return circuits, described some control oil circuits comprise the first weave control oil oil circuit be connected with the rodless cavity of oscillating oil cylinder, the oily oil circuit of the second weave control be connected with the rod chamber of oscillating oil cylinder and the injection that is connected with the rod chamber of injection oil cylinder controls oily oil circuit; Described some oil return circuits comprise the first injection oil return circuit be connected with the rodless cavity of injection oil cylinder and the second injection oil return circuit be connected with the rod chamber of injection oil cylinder.
2. hydraulic means according to claim 1, is characterized in that, described high-pressure and hydraulic Control Component comprises:
High-pressure oil passage block, is provided with oil-feed oil circuit in it and high pressure injection controls oil circuit, and the input of described oil-feed oil circuit is connected with hydraulic power unit;
At least one high pressure accumulator, is arranged on high-pressure oil passage block and the input controlling oil circuit respectively with the output of oil-feed oil circuit and high pressure injection is connected; With
High pressure injection Controlling solenoid valve, is arranged on high-pressure oil passage block and the injection of series connection access high pressure controls in oil circuit.
3. hydraulic means according to claim 2, is characterized in that, the operating pressure of described high pressure accumulator is 300bar.
4. hydraulic means according to claim 2, is characterized in that, the quantity of described high pressure accumulator is three.
5. hydraulic means according to claim 1, is characterized in that, described middle pressure Hydraulic Conirol Unit comprises:
Middle pressure oil path block, is provided with oil-feed oil circuit in it and medium-pressure injection controls oil circuit, and the input of described oil-feed oil circuit is connected with hydraulic power unit;
At least one intermediate-pressure accumulator, is arranged on middle pressure oil path block and the input controlling oil circuit respectively with the output of oil-feed oil circuit and medium-pressure injection is connected;
First medium-pressure injection Controlling solenoid valve, is arranged on middle pressure oil path block, and accesses between intermediate-pressure accumulator and medium-pressure injection oil circuit control; With
Second medium-pressure injection Controlling solenoid valve, to be arranged on middle pressure oil path block and to access in medium-pressure injection oil circuit control.
6. hydraulic means according to claim 5, is characterized in that, the operating pressure of described intermediate-pressure accumulator is 160bar.
7. hydraulic means according to claim 5, is characterized in that, the quantity of described intermediate-pressure accumulator is two.
8., according to the arbitrary described hydraulic means of claim 1 to 7, it is characterized in that, described docking oil cylinder hydraulic Control Component comprises:
Docking oil cylinder hydraulic oil circuit control block, is provided with pressure oil oil circuit, the first docking control oil circuit, the second docking control oil circuit, two the first docking oil return circuits and the second docking oil return circuit in it;
First docking Controlling solenoid valve, is arranged on and docks on oil cylinder hydraulic oil circuit control block and connect in access first docking control oil circuit;
Second docking Controlling solenoid valve, is arranged on and docks on oil cylinder hydraulic oil circuit control block and connect in access second docking control oil circuit;
Two first docking oil return solenoid valves, are arranged on docking oil cylinder hydraulic oil circuit control block and also connect in access one first docking oil return circuit respectively; With
Second docking oil return solenoid valve, is arranged on docking oil cylinder hydraulic oil circuit control block and access second of connecting is docked in oil return circuit.
9., according to the arbitrary described hydraulic means of claim 1 to 7, it is characterized in that, described backhaul Hydraulic Conirol Unit comprises:
Backhaul hydraulic control oil circuit block, is provided with pressure oil oil circuit, the first weave control oil oil circuit, the second weave control oil oil circuit, injection controls oil circuit, the first injection oil return circuit and the second injection oil return circuit in it;
First weave control magnetic valve, to be arranged on backhaul hydraulic control oil circuit block and to connect in access first weave control oil oil circuit;
Second weave control magnetic valve, to be arranged on backhaul hydraulic control oil circuit block and to connect in access first weave control oil oil circuit;
Injection Controlling solenoid valve, is arranged on backhaul hydraulic control oil circuit block and series connection access injection controls in oil circuit;
First injection oil return solenoid valve, to be arranged on backhaul hydraulic control oil circuit block and to connect in access first injection oil return circuit; With
Second injection oil return solenoid valve, to be arranged on backhaul hydraulic control oil circuit block and to connect in access second injection oil return circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210011790.4A CN103203386B (en) | 2012-01-13 | 2012-01-13 | Hydraulic device with multiple oil cylinders in linkage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210011790.4A CN103203386B (en) | 2012-01-13 | 2012-01-13 | Hydraulic device with multiple oil cylinders in linkage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103203386A CN103203386A (en) | 2013-07-17 |
| CN103203386B true CN103203386B (en) | 2014-12-24 |
Family
ID=48750910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210011790.4A Expired - Fee Related CN103203386B (en) | 2012-01-13 | 2012-01-13 | Hydraulic device with multiple oil cylinders in linkage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103203386B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104691011A (en) * | 2013-12-09 | 2015-06-10 | 广东科达洁能股份有限公司 | Hydraulic control device for multi-cylinder linkage of cooking oven molding press |
| CN109296597A (en) * | 2018-11-06 | 2019-02-01 | 广州晶品智能压塑科技股份有限公司 | Hydraulic station pressure regulating system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3430038A1 (en) * | 1984-08-16 | 1986-02-27 | Robert Bosch Gmbh, 7000 Stuttgart | Hydraulic system for a harvesting machine with a hydraulic control arrangement |
| JP4907445B2 (en) * | 2007-06-18 | 2012-03-28 | 日本ニューマチック工業株式会社 | Hydraulic control device for attachments in construction machinery |
| CN201779096U (en) * | 2010-06-30 | 2011-03-30 | 广东韶钢松山股份有限公司 | Integrated oil pump master station |
| CN102059269B (en) * | 2010-11-25 | 2012-11-28 | 广东科达机电股份有限公司 | Injection device of metal extrusion moulding machine |
| CN202064326U (en) * | 2011-04-27 | 2011-12-07 | 扬州市飞龙气动液压设备有限公司 | Synchronous split hydraulic hoist |
| CN202431630U (en) * | 2012-01-13 | 2012-09-12 | 广东科达机电股份有限公司 | Hydraulic device with multiple cylinders in linkage |
-
2012
- 2012-01-13 CN CN201210011790.4A patent/CN103203386B/en not_active Expired - Fee Related
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| CN103203386A (en) | 2013-07-17 |
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Address after: 528313 Guangdong City, Shunde province Chencun Town, industrial park, long Ring Road West Town, No. 1 Applicant after: KEDA CLEAN ENERGY CO., LTD. Address before: 528313 Guangdong City, Shunde province Chencun Town, industrial park, long Ring Road West Town, No. 1 Applicant before: Guangdong Keda Electromechanical Co., Ltd. |
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Effective date of registration: 20200424 Address after: 236200 Anhui city of Fuyang province Yingshang County Industrial Park Patentee after: AO DE MINING MACHINERY EQUIPMENT SCIENCE AND TECHNOLOGY Co.,Ltd. Address before: 528313, No. 1, West Road, Guang Long Industrial Park, Chencun Town, Shunde District, Guangdong, Foshan Patentee before: KEDA CLEAN ENERGY Co.,Ltd. |
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Granted publication date: 20141224 Termination date: 20210113 |