CN102588393A - High-speed punching hydraulic circuit of hydraulic punching machine - Google Patents
High-speed punching hydraulic circuit of hydraulic punching machine Download PDFInfo
- Publication number
- CN102588393A CN102588393A CN2012100628755A CN201210062875A CN102588393A CN 102588393 A CN102588393 A CN 102588393A CN 2012100628755 A CN2012100628755 A CN 2012100628755A CN 201210062875 A CN201210062875 A CN 201210062875A CN 102588393 A CN102588393 A CN 102588393A
- Authority
- CN
- China
- Prior art keywords
- valve
- low
- pressure
- tension loop
- oil
- 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
Landscapes
- Fluid-Pressure Circuits (AREA)
- Control Of Presses (AREA)
Abstract
The invention discloses a high-speed punching hydraulic circuit of a hydraulic punching machine. The high-speed punching hydraulic circuit comprises an oil cylinder, a high-voltage circuit, a low-voltage circuit, a change valve, a high-voltage pump used for supplying oil to the high-voltage circuit and a low-voltage pump used for supplying oil to the low-voltage circuit; the change valve is used for changing directions of an upper cavity of the oil cylinder, a pipeline formed after the high-voltage circuit and the low-voltage circuit are converged, and a return pipeline; a low-voltage energy accumulator, a one-way valve and a low-voltage unloading valve are arranged on the low-voltage circuit; a lower cavity of the oil cylinder is connected with the low-voltage circuit; a high-voltage unloading valve, a one-way valve, a high-voltage energy accumulator and a directly-operated type balanced normally open logic valve are arranged on the high-voltage circuit; an oil discharge outlet of the logic valve is connected with the upper cavity of the oil cylinder, and a pressure guide hole of the logic valve is connected with the lower cavity of the oil cylinder; and an oil outlet of the high-voltage unloading valve is connected with the low-voltage circuit. According to the high-speed punching hydraulic circuit of the hydraulic punching machine, the opening and the closing of the logic valve are controlled through pressure change of the upper and lower cavities of the oil cylinder, so that the connection of the high-voltage circuit is controlled, and automatic connection and disconnection of pressure oil from the high-voltage circuit to the low-voltage circuit can be implemented.
Description
Technical field
The present invention relates to a kind of oil hydraulic circuit, particularly a kind of oil hydraulic circuit of controlling the punching press oil cylinder.
Background technique
Because the intermittence during the hydraulic pressure press machine uses; Therefore improve drawing velocity as supplementary energy in the time of in oil hydraulic circuit, all can adopting accumulator to reach work; The pressure oil that the storage liquid press pump is exported in the time of intermittently also cooperates unloading valve to make loop oil hydraulic pump off-load when pressure arrives design pressure, reaches purpose of energy saving.At present to use more be that pure high tension loop and depression belt accumulator high pressure be not with the loop of accumulator in the high speed stamping loop.Pure high tension loop drawing velocity is fast, but power consumption is high, the heating is big, and high-voltage operation all can cause bigger influence for pipeline, sealing etc., and rate of fault is than higher, and oil hydraulic pump is short working life.Depression belt accumulator, high pressure are very not fast with the loop of accumulator speed when the oil cylinder idle stroke, but when the punching press steel plate; High pressure need expend time in and be elevated to the required pressure of punching press from lower pressure; Drawing velocity depends on the flow of pump, as improving drawing velocity, just needs pump, the heavy-duty motor of big flow; Its power consumption, heating, noise etc. all can be very big, reduced systemic price ratio.Height pressure zone accumulator loop has advantages such as low in energy consumption, that speed is fast, the life-span is long, need see from long term growth, and exploitation high low pressure accumulator oil hydraulic circuit is more reasonable.
Summary of the invention
The technical problem that the present invention will solve is: a kind of high speed stamping oil hydraulic circuit of hydraulic pressure press machine is provided, makes it can realize the oil cylinder high speed stamping.
In order to solve the problems of the technologies described above; The present invention includes oil cylinder, high tension loop, low tension loop, selector valve, give the high-pressure service pump of high tension loop fuel feeding and the low pressure pump of giving the low tension loop fuel feeding; Selector valve is used for oil cylinder epicoele, high tension loop and low tension loop and converges the switching-over between back pipeline and the return line three; Low tension loop is provided with low pressure accumulator, one-way valve and low pressure unloading valve; The oil cylinder cavity of resorption connects low tension loop, and described high tension loop is provided with high pressure unloading valve, one-way valve, high pressure accumulator and straight dynamic balancing type and often opens logical valve, and the oil drain out of logical valve connects the oil cylinder epicoele; The logical valve pilot port connects the oil cylinder cavity of resorption, and the oil outlet of high pressure unloading valve connects low tension loop.
In order to improve Security, be equipped with safety valve and pressure gauge in described high tension loop and the low tension loop.
In order to reduce cost, described low pressure pump and high-pressure service pump are by a motor-driven duplex pump.
The invention has the beneficial effects as follows: the present invention is through the break-make of the variation in pressure control controllable logic valve of oil cylinder upper and lower cavity; Thereby the break-make of control high tension loop; Realize high tension loop pressure oil to being dynamically connected certainly and breaking off of low tension loop, and the realization high speed stamping, at utmost reduce the function of power consumption.
Description of drawings
Fig. 1 is a flow chart of the present invention;
Element among the figure: 1, motor, 2, low pressure pump, 3, high-pressure service pump, 4, the low pressure unloading valve, 5, one-way valve; 6, low pressure accumulator, 7, pressure gauge, 8, safety valve, 9, the high pressure unloading valve; 10, one-way valve, 11, high pressure accumulator, 12, pressure gauge, 13, safety valve; 14, on-off valve, 15, one-way valve, 16, selector valve, 17, oil cylinder.
Embodiment
The high speed stamping oil hydraulic circuit of hydraulic pressure press machine as shown in Figure 1 comprises motor 1, low pressure pump 2, high-pressure service pump 3, low pressure unloading valve 4, one-way valve 5, low pressure accumulator 6, pressure gauge 7, safety valve 8, high pressure unloading valve 9, one-way valve 10, high pressure accumulator 11, pressure gauge 12, safety valve 13, on-off valve 14, one-way valve 15, selector valve 16 and oil cylinder 17.
Low pressure unloading valve 4, one-way valve 5, low pressure accumulator 6, pressure gauge 7, safety valve 8 and one-way valve 15 connect into low tension loop through oil pipe, and an end of low tension loop connects low pressure pump 2.
High pressure unloading valve 9, one-way valve 10, high pressure accumulator 11, pressure gauge 12, safety valve 13 and on-off valve 14 connect into high tension loop through oil pipe, and an end of high tension loop connects high-pressure service pump 3.High-pressure service pump 3 is driven by motor 1 with low pressure pump 2, forms duplex pump.
Low tension loop is connected to a convergence tube away from an end of low pressure pump 2 and the end away from high-pressure service pump 3 of high tension loop; Selector valve 16 is three position four-way directional control valves; Convergence tube connects selector valve 16 filler openings; An actuator port of selector valve 16 connects the epicoele of oil cylinder 17, another actuator port sealing of selector valve 16, and the return opening of selector valve 16 connects fuel tank.Oil cylinder 17 cavity of resorptions connect low tension loop.
On-off valve 14 is that a kind of straight dynamic balancing type is often opened logical valve, and this valve is inserted in the overview of formula valve on the books at the SUN of SUN company.Have two actuator ports and two control ports (pilot port and oil drain out), also be provided with control spring.The actuator port of on-off valve 14 is connected in the high tension loop; The pilot port of on-off valve 14 (b end) connects the cavity of resorption of oil cylinder 17; The oil drain out of on-off valve 14 (a end) connects the epicoele of oil cylinder 17, through the spring of a end and the control oil switching-over at two ends, thus the break-make of control high tension loop.The control oil pocket at a, b two ends has area identical, under the effect of control oil, can produce directed force F
a, F
bSpring produces spring force F
tWork as F
b>F
a+ F
tThe time, 14 liang of actuator ports of on-off valve are obstructed.
The equal connected tank of oil outlet of low pressure unloading valve 4, safety valve 8 and safety valve 13, the oil outlet of high pressure unloading valve 9 connects low tension loop.
Working principle:
Starting electrical machinery 1; Low pressure pump 2 and high-pressure service pump 3 be fuel feeding in low tension loop and high tension loop respectively, and the piston rod of oil cylinder 17 rises to upper, and low tension loop and high tension loop internal pressure rise; Low pressure accumulator 6 and high pressure accumulator 11 oils in reserve; When the pressure in the high tension loop reached high pressure unloading valve 9 setting pressures, high pressure unloading valve 9 was opened and is communicated with high-pressure service pump 3 and low pressure pump 2, and double pump is together to the low tension loop fuel feeding; Can increase the peak flow values of low tension loop, thereby the discharge capacity that improves punching efficient or reduction low pressure pump 2 plays the effect that reduces power of motor.When the pressure in the low tension loop reached low pressure unloading valve 4 setting pressures, low pressure unloading valve 4 was opened, the low pressure pump off-load, and motor idle running cuts down the consumption of energy.
The electromagnet of selector valve 16 is worked under the signal of control system, and when the needs punching press, the electromagnet of selector valve 16 gets electric generation thrust; Selector valve 16 working positions are changed to lower end position as shown in the figure, and the piston rod of oil cylinder 17 is descending, behind contact workpiece; Oil cylinder 17 upper cavity pressures raise, F
aIncrease, work as F
t+ F
a>F
bThe time, on-off valve 14 switches to the next, and the pressure oil in the high pressure accumulator 11 gets into oil cylinder 17 epicoeles and produces big stamping press, closes one-way valve 15 simultaneously, the protection low tension loop.After the completion punching press needs, the electromagnet outage of control system control selector valve 16, selector valve 16 resets under the effect of spring, and the piston rod of oil cylinder 17 is up, and the epicoele of oil cylinder 17 leads to fuel tank, F
aNear zero, on-off valve 14 resets high tension loop is broken off.
Claims (3)
1. the high speed stamping oil hydraulic circuit of a hydraulic pressure press machine; Comprise oil cylinder, high tension loop, low tension loop, selector valve, give the high-pressure service pump of high tension loop fuel feeding and the low pressure pump of giving the low tension loop fuel feeding; Selector valve is used for oil cylinder epicoele, high tension loop and low tension loop and converges the switching-over between back pipeline and the return line three; Low tension loop is provided with low pressure accumulator, one-way valve and low pressure unloading valve; The oil cylinder cavity of resorption connects low tension loop, it is characterized in that: described high tension loop is provided with high pressure unloading valve, one-way valve, high pressure accumulator and straight dynamic balancing type and often opens logical valve, and the oil drain out of logical valve connects the oil cylinder epicoele; The logical valve pilot port connects the oil cylinder cavity of resorption, and the oil outlet of high pressure unloading valve connects low tension loop.
2. the high speed stamping oil hydraulic circuit of hydraulic pressure press machine according to claim 1 is characterized in that: be equipped with safety valve and pressure gauge in described high tension loop and the low tension loop.
3. the high speed stamping oil hydraulic circuit of hydraulic pressure press machine according to claim 1 and 2 is characterized in that: described low pressure pump and high-pressure service pump are by a motor-driven duplex pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100628755A CN102588393A (en) | 2012-03-12 | 2012-03-12 | High-speed punching hydraulic circuit of hydraulic punching machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100628755A CN102588393A (en) | 2012-03-12 | 2012-03-12 | High-speed punching hydraulic circuit of hydraulic punching machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102588393A true CN102588393A (en) | 2012-07-18 |
Family
ID=46477491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100628755A Pending CN102588393A (en) | 2012-03-12 | 2012-03-12 | High-speed punching hydraulic circuit of hydraulic punching machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102588393A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696994A (en) * | 2014-01-11 | 2014-04-02 | 谭桂新 | High-speed hydraulic impacting system |
| CN107842530A (en) * | 2017-11-27 | 2018-03-27 | 南通锻压设备股份有限公司 | A kind of hydraulic system of high speed drift |
| CN110918853A (en) * | 2019-12-07 | 2020-03-27 | 南京宏擎精密材料科技有限公司 | Energy-saving die forging hydraulic press and using method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09177707A (en) * | 1995-12-25 | 1997-07-11 | Izumi Prod Co | Hydraulic circuit for hydraulic pump for double acting hydraulic cylinder |
| EP1138958B1 (en) * | 2000-03-30 | 2006-09-06 | Euromac S.r.l. | Fluid-operated circuit for setting the top and bottom dead center location of the punch actuation cylinder in punching machines |
| CN100999004A (en) * | 2007-01-05 | 2007-07-18 | 广东工业大学 | High speed punch cutting device and its control method |
| CN201170219Y (en) * | 2008-02-20 | 2008-12-24 | 山东法因数控机械股份有限公司 | Punched hole power hydraulic system of flat plate sinker drill compound machine |
| CN201833622U (en) * | 2010-08-09 | 2011-05-18 | 合肥锻压机床有限公司 | Hydraulic press with debugging function and hydraulic system thereof |
| CN202468560U (en) * | 2012-03-12 | 2012-10-03 | 山东法因数控机械股份有限公司 | High-speed punching hydraulic loop of hydraulic punching machine |
-
2012
- 2012-03-12 CN CN2012100628755A patent/CN102588393A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09177707A (en) * | 1995-12-25 | 1997-07-11 | Izumi Prod Co | Hydraulic circuit for hydraulic pump for double acting hydraulic cylinder |
| EP1138958B1 (en) * | 2000-03-30 | 2006-09-06 | Euromac S.r.l. | Fluid-operated circuit for setting the top and bottom dead center location of the punch actuation cylinder in punching machines |
| CN100999004A (en) * | 2007-01-05 | 2007-07-18 | 广东工业大学 | High speed punch cutting device and its control method |
| CN201170219Y (en) * | 2008-02-20 | 2008-12-24 | 山东法因数控机械股份有限公司 | Punched hole power hydraulic system of flat plate sinker drill compound machine |
| CN201833622U (en) * | 2010-08-09 | 2011-05-18 | 合肥锻压机床有限公司 | Hydraulic press with debugging function and hydraulic system thereof |
| CN202468560U (en) * | 2012-03-12 | 2012-10-03 | 山东法因数控机械股份有限公司 | High-speed punching hydraulic loop of hydraulic punching machine |
Non-Patent Citations (1)
| Title |
|---|
| 臧贻娟 等: "高速冲床液压系统设计", 《液压与气动》, no. 4, 30 April 2008 (2008-04-30), pages 43 - 45 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696994A (en) * | 2014-01-11 | 2014-04-02 | 谭桂新 | High-speed hydraulic impacting system |
| CN107842530A (en) * | 2017-11-27 | 2018-03-27 | 南通锻压设备股份有限公司 | A kind of hydraulic system of high speed drift |
| CN107842530B (en) * | 2017-11-27 | 2019-05-31 | 南通锻压设备如皋有限公司 | A kind of hydraulic system of high speed formed punch |
| CN110918853A (en) * | 2019-12-07 | 2020-03-27 | 南京宏擎精密材料科技有限公司 | Energy-saving die forging hydraulic press and using method thereof |
| CN110918853B (en) * | 2019-12-07 | 2021-09-03 | 南京宏擎精密材料科技有限公司 | Energy-saving die forging hydraulic press and using method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103062148B (en) | A kind of energy-saving priority unloading valve | |
| CN102229328A (en) | Vehicle mechanical energy-saving hydraulic system with multi-pump confluence | |
| CN201779083U (en) | Hydraulic control system | |
| CN203272291U (en) | Workpiece feeding rapid unloading loop | |
| CN202468560U (en) | High-speed punching hydraulic loop of hydraulic punching machine | |
| CN203500143U (en) | Hydraulic control system of hydraulic shearing machine tool | |
| CN203098442U (en) | Energy-saving type priority unloading valve | |
| CN102588393A (en) | High-speed punching hydraulic circuit of hydraulic punching machine | |
| CN203272289U (en) | Electromagnetic unloading loop device | |
| CN204344557U (en) | A kind of ultrahigh pressure pilot operated compound relief valve | |
| CN112983909A (en) | Movable arm hydraulic system | |
| CN202356462U (en) | Hydraulic control loop of straightener | |
| CN103883571A (en) | Electrohydraulic control multi-pump quantitive confluence hydraulic system for loading machines | |
| CN204061361U (en) | Hydraulic system and Lightgage Steel Joist process equipment | |
| CN202833367U (en) | Mortar pump hydraulic system and mortar pump | |
| CN201931636U (en) | Hydraulic press capable of realizing conversion control of high-low voltage | |
| CN201155420Y (en) | Hydroturbine emergency stop device based on cartridge valve | |
| CN101698251B (en) | Hydraulic pressure control loop system of cutting-to-length pressure plate cylinder | |
| CN202789859U (en) | Hydraulic energy-saving temperature controlling system for loader working equipment | |
| CN204704187U (en) | Overload unloading valve | |
| CN202883529U (en) | Energy-saving device of hydraulic piston pump of filter press | |
| CN102661296A (en) | Hydraulic system and engineering machinery vehicle | |
| CN202811602U (en) | Overflow module and overflow circuit and engineering machinery including overflow circuit | |
| CN202851525U (en) | Rapid hydro-cylinder hydraulic system | |
| CN202468559U (en) | Variable speed variable pump hydraulic system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120718 |