CN102873849A - Hydraulic loose core circuit having pressure release function - Google Patents
Hydraulic loose core circuit having pressure release function Download PDFInfo
- Publication number
- CN102873849A CN102873849A CN 201110196171 CN201110196171A CN102873849A CN 102873849 A CN102873849 A CN 102873849A CN 201110196171 CN201110196171 CN 201110196171 CN 201110196171 A CN201110196171 A CN 201110196171A CN 102873849 A CN102873849 A CN 102873849A
- Authority
- CN
- China
- Prior art keywords
- valve
- loosing core
- oil
- actuator port
- loose core
- 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.)
- Pending
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a hydraulic loose core circuit having a pressure release function. The circuit comprises a loose core oil cylinder, a loose core valve and pressure release valves, and is formed through the connection of pipelines. The circuit is characterized in that the oil inlet end of the system of the circuit is connected with the oil inlet of the loose core valve through one of the pipelines, the first work oil port of the loose core valve is connected with the rodless cavity of the loose core oil cylinder, the second work oil port of the loose core valve is connected with the rod cavity of the loose core oil cylinder, and the oil returning port of the loose core valve is connected with the oil returning end of the system to realize the core loose; and the two pressure release valves having a same specification model are connected with the first work oil port and the second work oil port respectively, and pressure release is carried out before the dismounting and the mounting of a die oil tube, so oil liquid pollution caused by the sputtering of pressure oil in the loose core oil tube to air can be effectively avoided, and the safety performance of a use machine is improved.
Description
Affiliated technical field
The present invention relates to a kind of hydraulic circuit system, especially a kind of hydraulic injection molding machine with decompression function loop of loosing core.
Background technology
Traditional injection machine is loosed core, and (claim again: neutron) hydraulic circuit is the oil cylinder of loosing core on the direction valve control mould of a meta hydraulic fluid port totally-enclosed (O type), is not carrying out when loosing core action, and valve port is totally-enclosed.In mold exchange more, always leave certain pressure oil in the working tubing of loosing core, when the dismounting oil pipe like this, the hydraulic oil that has pressure is easy to be splashed in the air, causes oil contamination, can be to human body when serious, especially operating personnel damage, and have potential safety hazard.
Summary of the invention
Technical problem to be solved by this invention: overcome the above-mentioned deficiency of prior art and provide a kind of simple in structure, the practical hydraulic pressure with the decompression function loop of loosing core.
The present invention solves the technical scheme that its technical problem adopts: a kind of hydraulic pressure with decompression function loop of loosing core comprises the oil cylinder of loosing core, the valve of loosing core, relief valve and being formed by connecting by pipeline; It is characterized in that: the oil inlet end of system links to each other by the oil-in of pipeline with the valve of loosing core, the first actuator port of valve of loosing core links to each other with the oil cylinder rodless cavity of loosing core, the second actuator port of valve of loosing core links to each other with the cylinder rod chamber of loosing core, and the oil return opening of the valve of loosing core links to each other with the system oil return end, realizes loosing core action; Two relief valves of same size model link to each other with the first actuator port, second actuator port of the valve of loosing core respectively, realize decompression function.
Described a kind of hydraulic pressure with decompression function loop of loosing core is characterized in that: each one of the snap joint of can connecting respectively between the first actuator port of loose core oil cylinder and the valve of loosing core, the second actuator port.
Described a kind of hydraulic pressure with decompression function loop of loosing core, it is characterized in that: the valve of loosing core is three-position four-way valve, wherein the valve meta is that four hydraulic fluid ports are totally-enclosed.
Described a kind of hydraulic pressure with decompression function loop of loosing core, it is characterized in that: relief valve is two position two-way valve, perhaps is the switching regulator inserted valve; Its control mode can be manually, can be Electromagnetic Control.
Described a kind of hydraulic pressure with decompression function loop of loosing core, it is characterized in that: if the first actuator port of the valve of loosing core, when the second actuator port is in series with stacking type hydraulic control check valve, the valve of loosing core is three-position four-way valve, wherein the valve meta is the logical oil return opening of the first actuator port, the second actuator port, the oil-in sealing.
Beneficial effect of the present invention:
A kind of hydraulic pressure with decompression function loop of loosing core can effectively be avoided because the pressure oil in the oil pipe of loosing core is splashed in the air, and the oil contamination that causes and improve and use the machine safety energy.
Description of drawings
Fig. 1 is the loose core main structure schematic diagram in loop of a kind of hydraulic pressure with decompression function.
Be labeled as among the figure: 1. the oil cylinder of loosing core; 4. the valve of loosing core; 5. relief valve.
Fig. 2 is the loose core structure principle chart of selecting in loop of a kind of hydraulic pressure with decompression function.
Be labeled as among the figure: 1. the oil cylinder of loosing core; 2. snap joint; 3 stacking type hydraulic control check valves; 4. the valve of loosing core; 5. relief valve.
The specific embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of hydraulic pressure with decompression function loop of loosing core comprises the oil cylinder of loosing core (1), the valve of loosing core (4), relief valve (5) and being formed by connecting by pipeline; It is characterized in that: the oil inlet end of system links to each other by the oil-in of pipeline with the valve of loosing core (4), the first actuator port of valve (4) of loosing core links to each other with the oil cylinder of loosing core (1) rodless cavity, the second actuator port of valve (4) of loosing core links to each other with the oil cylinder of loosing core (1) rod chamber, the oil return opening of valve (4) of loosing core links to each other with the system oil return end, realizes loosing core action; Two relief valves (5) of same size model link to each other with the first actuator port, second actuator port of the valve of loosing core (4) respectively, realize decompression function.
The described valve of loosing core (4) is three-position four-way valve, and wherein the valve meta is that four hydraulic fluid ports are totally-enclosed.Relief valve (5) is two position two-way valve, perhaps is the switching regulator inserted valve; Its control mode can be manually, can be Electromagnetic Control.When loosing core action, YA1 gets electric, and the P of the valve of loosing core (4) leads to A, and B leads to T, realizes the core function; YA2 gets electric, and the P of the valve of loosing core (4) leads to B, and A leads to T, realizes moving back the core function.When needs more during mold exchange, first YA3 and YA4 are got electric, the respectively pressure release oil sump tank of oil cylinder (1) rod chamber and rodless cavity of loosing core like this, oil pipe is without pressure, at this moment pull down again oil pipe, just can not exist pressure oil to be splashed in the air, avoid oil contamination and improve use machine safety energy.
As shown in Figure 2, each one of the snap joint (2) of can connecting respectively between first actuator port, the second actuator port of oil cylinder (1) and the valve of loosing core (4) of loosing core in the loop of loosing core of described a kind of hydraulic pressure with decompression function, when the first actuator port of the valve if loose core (4), the second actuator port are in series with stacking type hydraulic control check valve (3), the valve (4) of loosing core is three-position four-way valve, wherein the valve meta is the logical oil return opening of the first actuator port, the second actuator port, the oil-in sealing.When loosing core action, YA1 gets electric, and the P of the valve of loosing core (4) leads to A, and B leads to T, realizes the core function; YA2 gets electric, and the P of the valve of loosing core (4) leads to B, and A leads to T, realizes moving back the core function.When needs more during mold exchange, get YA3 and YA4 electric first, oil cylinder (1) rod chamber and the rodless cavity difference of loosing core like this pressure release oil sump tank, oil pipe is without pressure, at this moment pull up snap joint (2), avoided oil liquid leakage, avoided simultaneously pressure oil pipe owing to not noting hurting operating personnel, made the loose core work of oil pipe of whole dismounting more safe and effective.
Operation principle
A kind of hydraulic pressure with decompression function of this invention loop of loosing core comprises the oil cylinder of loosing core (1), the valve of loosing core (4), relief valve (5) and being formed by connecting by pipeline; It is characterized in that: the oil inlet end of system links to each other by the oil-in of pipeline with the valve of loosing core (4), the first actuator port of valve (4) of loosing core links to each other with the oil cylinder of loosing core (1) rodless cavity, the second actuator port of valve (4) of loosing core links to each other with the oil cylinder of loosing core (1) rod chamber, the oil return opening of valve (4) of loosing core links to each other with the system oil return end, realizes loosing core action; Two relief valves (5) of same size model link to each other with the first actuator port, second actuator port of the valve of loosing core (4) respectively, realize decompression function.
Claims (5)
1. the hydraulic pressure with decompression function loop of loosing core comprises the oil cylinder of loosing core (1), the valve of loosing core (4), relief valve (5) and being formed by connecting by pipeline; It is characterized in that: the oil inlet end of system links to each other by the oil-in of pipeline with the valve of loosing core (4), the first actuator port of valve (4) of loosing core links to each other with the oil cylinder of loosing core (1) rodless cavity, the second actuator port of valve (4) of loosing core links to each other with the oil cylinder of loosing core (1) rod chamber, the oil return opening of valve (4) of loosing core links to each other with the system oil return end, realizes loosing core action; Two relief valves (5) of same size model link to each other with the first actuator port, second actuator port of the valve of loosing core (4) respectively, realize decompression function.
2. a kind of hydraulic pressure with decompression function as claimed in claim 1 loop of loosing core is characterized in that: each one of the snap joint (2) of can connecting respectively between the first actuator port of the oil cylinder of loosing core (1) and the valve of loosing core (4), the second actuator port.
3. a kind of hydraulic pressure with decompression function as claimed in claim 1 loop of loosing core, it is characterized in that: the valve of loosing core (4) is three-position four-way valve, and wherein the valve meta is that four hydraulic fluid ports are totally-enclosed.
4. a kind of hydraulic pressure with decompression function as claimed in claim 1 loop of loosing core, it is characterized in that: relief valve (5) is two position two-way valve, perhaps is the switching regulator inserted valve; Its control mode can be manually, can be Electromagnetic Control.
5. a kind of hydraulic pressure with decompression function as claimed in claim 1 loop of loosing core, it is characterized in that: if the first actuator port of the valve of loosing core (4), when the second actuator port is in series with stacking type hydraulic control check valve (3), the valve (4) of loosing core is three-position four-way valve, wherein the valve meta is the logical oil return opening of the first actuator port, the second actuator port, the oil-in sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110196171 CN102873849A (en) | 2011-07-11 | 2011-07-11 | Hydraulic loose core circuit having pressure release function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110196171 CN102873849A (en) | 2011-07-11 | 2011-07-11 | Hydraulic loose core circuit having pressure release function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102873849A true CN102873849A (en) | 2013-01-16 |
Family
ID=47475474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110196171 Pending CN102873849A (en) | 2011-07-11 | 2011-07-11 | Hydraulic loose core circuit having pressure release function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102873849A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106696220A (en) * | 2016-12-05 | 2017-05-24 | 盐城市步高汽配制造有限公司 | Mold oil cylinder core-pulling sliding block retaining circuit used in injection process of injection molding machine |
| CN108372283A (en) * | 2018-04-13 | 2018-08-07 | 宁波力劲科技有限公司 | A kind of die casting machine core-pulling device and core pulling method |
| CN109915441A (en) * | 2019-03-01 | 2019-06-21 | 中国飞机强度研究所 | Big volume servo-cylinder unloads protecting against shock method and device |
| CN111928042A (en) * | 2020-08-18 | 2020-11-13 | 安徽鲲鹏装备模具制造有限公司 | Automatic pressure relief system convenient for quick connector to be plugged |
| CN115059658A (en) * | 2022-05-24 | 2022-09-16 | 湖南中联重科智能高空作业机械有限公司 | Telescopic oil cylinder hydraulic system and engineering machinery |
-
2011
- 2011-07-11 CN CN 201110196171 patent/CN102873849A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106696220A (en) * | 2016-12-05 | 2017-05-24 | 盐城市步高汽配制造有限公司 | Mold oil cylinder core-pulling sliding block retaining circuit used in injection process of injection molding machine |
| CN108372283A (en) * | 2018-04-13 | 2018-08-07 | 宁波力劲科技有限公司 | A kind of die casting machine core-pulling device and core pulling method |
| CN108372283B (en) * | 2018-04-13 | 2024-04-19 | 宁波力劲科技有限公司 | Core pulling method of core pulling device of die casting machine |
| CN109915441A (en) * | 2019-03-01 | 2019-06-21 | 中国飞机强度研究所 | Big volume servo-cylinder unloads protecting against shock method and device |
| CN109915441B (en) * | 2019-03-01 | 2020-09-18 | 中国飞机强度研究所 | Unloading impact-resistant method and device for large-volume servo oil cylinder |
| CN111928042A (en) * | 2020-08-18 | 2020-11-13 | 安徽鲲鹏装备模具制造有限公司 | Automatic pressure relief system convenient for quick connector to be plugged |
| CN115059658A (en) * | 2022-05-24 | 2022-09-16 | 湖南中联重科智能高空作业机械有限公司 | Telescopic oil cylinder hydraulic system and engineering machinery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102873849A (en) | Hydraulic loose core circuit having pressure release function | |
| CN201953731U (en) | Multi-cylinder synchronous operation control system | |
| CN201818571U (en) | Hydraulic system controlling two oil cylinders to sequentially telescope | |
| CN205639109U (en) | Hydraulic hoist machine with manual emergency device of energy storage formula | |
| CN102838042B (en) | Crane and double-telescopic-cylinder independent control hydraulic system thereof | |
| CN203743127U (en) | Hydraulic system for engineering oil cylinder durability test | |
| CN204003683U (en) | A kind of hydraulic system and engineering machinery | |
| CN203384136U (en) | Speed exchange circuit with parallel speed control valves | |
| CN205013405U (en) | Liquid accuse switching -over device and superhigh pressure booster of using thereof | |
| CN204312423U (en) | Oil hydraulic cylinder slow travel-snap back circuits in hydraulic pressure installation | |
| CN201909095U (en) | Electro-hydraulic linkage actuating mechanism | |
| CN201785788U (en) | Hydraulic quick connector for excavator | |
| CN103771286A (en) | Multi-cylinder synchronous lifting mechanism | |
| CN203670338U (en) | Sequence valve and corresponding hydraulic control loop | |
| CN204458574U (en) | A kind of punch press plug-in unit controls the hydraulic control system of two oil cylinders | |
| CN203362682U (en) | Differential oil supplementing hydraulic control device of electro-hydraulic proportional cartridge valve | |
| CN203488471U (en) | Novel hydraulic distribution device for load sensing control hydraulic system | |
| CN103771289A (en) | Multi-cylinder synchronous lifting mechanism | |
| CN203430877U (en) | Three-level pressure control pump | |
| CN202851525U (en) | Rapid hydro-cylinder hydraulic system | |
| CN209278261U (en) | A kind of position control system of hydraulic step actuator | |
| CN203926176U (en) | Integrated hydraulic hoists | |
| CN206513643U (en) | High-pressure bypass pressure and temperature reducing valve execution system | |
| CN204628137U (en) | Novel vertical mill pressurized hydraulic system | |
| CN206368863U (en) | Forming mill hydraulic control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130116 |