CN2695710Y - Press machine liquid return valve - Google Patents
Press machine liquid return valve Download PDFInfo
- Publication number
- CN2695710Y CN2695710Y CN 200420025552 CN200420025552U CN2695710Y CN 2695710 Y CN2695710 Y CN 2695710Y CN 200420025552 CN200420025552 CN 200420025552 CN 200420025552 U CN200420025552 U CN 200420025552U CN 2695710 Y CN2695710 Y CN 2695710Y
- Authority
- CN
- China
- Prior art keywords
- valve core
- valve
- oilhole
- oil
- big
- 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.)
- Expired - Fee Related
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses a press liquid return valve comprising a valve shell. AA big valve core provided with a small valve core inside is arranged inside the valve shell, and the small valve core is provided with a spring inside. The fore end of the valve shell is provided with a first oil-hole; the fore end of the big valve core is provided with a second oil-hole; the rear end of the small valve core is provided with a third oil-hole; the rear end of the big valve core is provided with a fourth oil-hole; the fore end of the side-face of the valve shell is provided with a sixth oil-hole; the rear end of the side-face of the valve shell is provided with a fifth oil-hole; the rear end-edge of the big valve core is provided with a lead angle. Provided with increased working frequency of the press, energy-saving, increased production output, easy realization, automatic unloading and system automation, the utility model is suitable for the hydraulic equipment with larger tonnage, higher pressure and higher working frequency.
Description
Technical field
The utility model relates to a kind of time liquid valve of hydraulic press.
Background technique
Known hydraulic press is by handling the work of guiding valve control fluid.It is long that this device returns the liquid time, makes that the frequency of okperation of press machine is low, and power consumption is big, causes to yield poorly.
Summary of the invention
The purpose of this utility model is to provide a kind of press machine to return the liquid valve, and the oil return of this time liquid valve is fast, can improve the frequency of okperation of press machine.
The purpose of this utility model is achieved in that this press machine returns the liquid valve and comprises valve casing, valve casing is built-in with big valve core, big valve core is built-in with small valve core, and small valve core is built-in with spring, and the front end of valve casing is provided with first oilhole, the front end of big valve core is provided with second oilhole, the rear end of small valve core is provided with the 3rd oilhole, and the rear end of big valve core is provided with the 4th oilhole, and the side front end of valve casing is provided with the 6th oilhole, the rear end, side of valve casing is provided with the 5th oilhole, and the back edge of big valve core is provided with lead angle.
The utility model can improve the frequency of okperation of press machine, has saved the energy, has increased production output.Be easy to realize automatic unloading, realize system automation.Be applicable to the hydraulic equipment that tonnage is big, pressure is higher, frequency of okperation is had relatively high expectations.
Description of drawings
Fig. 1 is a view before the oil-feed of the present utility model.Fig. 2 is the oil-feed view of Fig. 1.
1. first oilholes among the figure, 2. valve casing, 3. second oilhole, 4. big valve core, 5. spring, 6. small valve core, 7. the 3rd oilhole, 8. baffle plate, 9. cover plate, 10. the 4th oilhole, 11. lead angles, 12. the 5th oilholes, 13. the 6th oilholes.
Embodiment
In Fig. 1, valve casing 2 is built-in with big valve core 4, and big valve core 4 is built-in with small valve core 6, and small valve core 6 is built-in with spring 5.The front end of valve casing 2 is provided with first oilhole 1, the front end of big valve core 4 is provided with second oilhole 3, and the rear end of small valve core 6 is provided with the 3rd oilhole 7, and the rear end of big valve core 4 is provided with the 4th oilhole 10, the side front end of valve casing 2 is provided with the 6th oilhole 13, and the rear end, side of valve casing 2 is provided with the 5th oilhole 12.The back edge of big valve core 4 is provided with lead angle 11.
During oil-feed, fluid promotes big valve core 4 back lead angles 11 places by the 5th oilhole 12, and big valve core 4 is moved forward, and closes first oilhole 1.Along with increased pressure, pressure oil promotes small valve core 6 reaches by the 4th oilhole 10, small valve core 6 pressure springs 5, and pressure oil enters small valve core 6 through the 3rd oilhole 7, enters first oilhole 1 through second oilhole 3 and promotes oil cylinder piston.
In Fig. 2, during oil return, fluid is discharged by the 5th oilhole 12, and big valve core 4 back end pressures descend, and first hydraulic fluid port, 1 pressure is greater than big valve core 4 back end pressures, spring 5 promotes to move behind the small valve core 6, close the 4th oilhole 10, move behind big valve core 4 pressurizeds, open first oilhole 1, fluid releases through first oilhole 1 and the 6th oilhole 13, and oil cylinder piston resets.
Claims (1)
1. a press machine returns the liquid valve, this press machine returns the liquid valve and comprises valve casing, and valve casing is built-in with big valve core, it is characterized in that big valve core is built-in with small valve core, small valve core is built-in with spring, the front end of valve casing is provided with first oilhole, and the front end of big valve core is provided with second oilhole, and the rear end of small valve core is provided with the 3rd oilhole, the rear end of big valve core is provided with the 4th oilhole, the side front end of valve casing is provided with the 6th oilhole, and the rear end, side of valve casing is provided with the 5th oilhole, and the back edge of big valve core is provided with lead angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420025552 CN2695710Y (en) | 2004-03-17 | 2004-03-17 | Press machine liquid return valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420025552 CN2695710Y (en) | 2004-03-17 | 2004-03-17 | Press machine liquid return valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2695710Y true CN2695710Y (en) | 2005-04-27 |
Family
ID=34770983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420025552 Expired - Fee Related CN2695710Y (en) | 2004-03-17 | 2004-03-17 | Press machine liquid return valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2695710Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737368A (en) * | 2009-12-15 | 2010-06-16 | 盐城市智成机械制造有限公司 | Prefill valve of embosser |
| CN102642237A (en) * | 2012-04-28 | 2012-08-22 | 上海板机液压设备有限公司 | Control device and method for hot press close and open speed in fiber board production line |
-
2004
- 2004-03-17 CN CN 200420025552 patent/CN2695710Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737368A (en) * | 2009-12-15 | 2010-06-16 | 盐城市智成机械制造有限公司 | Prefill valve of embosser |
| CN102642237A (en) * | 2012-04-28 | 2012-08-22 | 上海板机液压设备有限公司 | Control device and method for hot press close and open speed in fiber board production line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |