CN201833622U - Hydraulic press with debugging function and hydraulic system thereof - Google Patents

Hydraulic press with debugging function and hydraulic system thereof Download PDF

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Publication number
CN201833622U
CN201833622U CN 201020292224 CN201020292224U CN201833622U CN 201833622 U CN201833622 U CN 201833622U CN 201020292224 CN201020292224 CN 201020292224 CN 201020292224 U CN201020292224 U CN 201020292224U CN 201833622 U CN201833622 U CN 201833622U
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CN
China
Prior art keywords
hydraulic
valve
oil pump
hydraulic cylinder
cavity
Prior art date
Application number
CN 201020292224
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Chinese (zh)
Inventor
张星
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合肥锻压机床有限公司
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Priority to CN 201020292224 priority Critical patent/CN201833622U/en
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Publication of CN201833622U publication Critical patent/CN201833622U/en

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Abstract

The utility model discloses a hydraulic system of a hydraulic press, which comprises an auxiliary hydraulic system and a change-over switch. The auxiliary hydraulic system comprises a first hydraulic branch and a second hydraulic branch, wherein the first hydraulic branch is connected between a main hydraulic system and an upper cavity of a hydraulic cylinder, and the second hydraulic branch is connected between the main hydraulic system and a lower cavity of the hydraulic cylinder. The first hydraulic branch comprises a first oil pump (1) and a first speed regulating valve (7) connected with the oil pump; the second hydraulic branch comprises a second oil pump (2), a second speed regulating valve (8) and a pressure safety valve (11), wherein the second speed regulating valve (8) and the pressure safety valve (11) are connected with the oil pump. Since the hydraulic system is provided with the auxiliary hydraulic system and adopts the change-over switch to realize switching between the main hydraulic system and the auxiliary hydraulic system, the working system can be switched into the auxiliary hydraulic system through the change-over switch when a mold is required to be debugged, and accordingly a slider can fall at a lower speed and requirements on debugging of the mold are met. The utility model further discloses a hydraulic press with the hydraulic system.

Description

A kind of hydraulic press and hydraulic system thereof with bedding-in function
Technical field
The utility model relates to the hydraulic press technical field, more particularly, relates to a kind of hydraulic press and hydraulic system thereof with bedding-in function.
Background technology
Hydraulic press be a kind of be working media with liquid, transmit energy to realize polytechnic machine according to pascal's principle being used to of making.Hydraulic press generally is made up of this machine (main frame), dynamical system and hydraulic control system three parts.Press structural shape and divide, hydraulic press has twin columns, four posts, eight posts, soldering frame posture and multilayer steel band to twine patterns such as framework.Compare with traditional Sheet Metal Forming Technology, Hydroform process in weight reduction, reduce number of spare parts and number of molds, raising rigidity and intensity, aspect such as reduce production costs has tangible technology and economic advantages, obtained increasing application in industrial circle.
Mould bedding-in press is mainly used in bedding-in, pressure testing, the examination of various diels and dashes and maintenance.At present domestic each mould manufacturer or various stamping parts of automobile producer are at the debugging mould or when repairing a die, major part still needs mould is maneuvered into and debugs in the special mould bedding-in press or repair a die, be maneuvered into after finishing on the hydraulic press of punching press, this die debugging mode all need wasted a large amount of time, man power and material aspect allocation and transportation, the installation again.
Yet present hydraulic press does not have die debugging required at a slow speed, does not therefore possess the die debugging function.
The utility model content
In view of this, the utility model provides a kind of hydraulic press and hydraulic system thereof, so that common hydraulic press has the bedding-in function, when the debugging mould, need not mould to be installed on the bedding-in forcing press to debug again, and can directly debug on hydraulic press.
For achieving the above object, the utility model provides following technical scheme:
A kind of hydraulic system of hydraulic press, the main hydraulic system that comprises the hydraulic cylinder works of controlling hydraulic press, also comprise auxiliary hydraulic system and the change-over switch of switching described main hydraulic system and described auxiliary hydraulic system, this auxiliary hydraulic system comprises: be connected the first hydraulic pressure branch road between the epicoele of described main hydraulic system and described hydraulic cylinder, and be connected the second hydraulic pressure branch road between the cavity of resorption of described main hydraulic system and described hydraulic cylinder;
The described first hydraulic pressure branch road comprises first oil pump that links to each other with fuel tank and first flow speed control valve that links to each other by pipeline with this oil pump;
The described second hydraulic pressure branch road comprises second oil pump that links to each other with fuel tank and second flow speed control valve and the pressure safety valve that links to each other by pipeline with this oil pump.
Preferably, in above-mentioned hydraulic system, described first flow speed control valve is a proportional velocity regulating valve.
Preferably, in above-mentioned hydraulic system, described second flow speed control valve is the manual governing valve.
Preferably, in above-mentioned hydraulic system, the exit of described first oil pump is connected with first overflow valve and the first pumping hole pressure safety valve.
Preferably, in above-mentioned hydraulic system, also comprise between the epicoele that is connected described proportional velocity regulating valve and described hydraulic cylinder by the check valve of proportional velocity regulating valve to the epicoele conducting of hydraulic cylinder.
Preferably, in above-mentioned hydraulic system, the exit of described second oil pump is connected with second overflow valve and the second pumping hole pressure safety valve.
Preferably, in above-mentioned hydraulic system, described first overflow valve and described second overflow valve are precursor overflow valve.
Preferably, in above-mentioned hydraulic system, also comprise between the cavity of resorption that is connected described manual governing valve and described hydraulic cylinder by the check valve of manual governing valve to the cavity of resorption conducting of hydraulic cylinder.
Preferably, in above-mentioned hydraulic system, also comprise the Solenoid ball valve between the cavity of resorption that is connected pressure safety valve and described hydraulic cylinder.
A kind of hydraulic press comprises aforesaid hydraulic system.
From above-mentioned technical scheme as can be seen, the utility model is by being provided with auxiliary hydraulic system, and can between described main hydraulic system and auxiliary hydraulic system, change by change-over switch, when mould need be debugged, then can work system be converted to auxiliary hydraulic system by change-over switch, to reach the lower decrease speed of slide block, satisfy the requirement of die debugging.Wherein, auxiliary hydraulic system comprises: the first hydraulic pressure branch road that between main hydraulic system and hydraulic cylinder epicoele, inserts, and the fuel delivery of first oil pump in this road system can be regulated arbitrarily through first flow speed control valve, and this moment, main hydraulic system was no longer to hydraulic cylinder epicoele fuel feeding.The second hydraulic pressure branch road inserts between main hydraulic system and hydraulic cylinder cavity of resorption, and the fuel delivery of second oil pump in this road system no longer changes after second flow speed control valve mixes up.In addition, because the hydraulic cylinder cavity of resorption that this road hydraulic system inserts, need to consider that the hydraulic cylinder cavity of resorption supports problem, prevent that hydraulic cylinder from together falling together with the motor-driven beam of hydraulic pressure, cause the accident, so connect a pressure safety valve in manual governing valve back, the piston rod that the pressure of safety valve must support slide block and hydraulic cylinder adds the weight of mold, need put certain safety coefficient in case of necessity.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The front view of the hydraulic system that Fig. 1 the utility model embodiment provides.
The specific embodiment
The utility model discloses a kind of hydraulic press and hydraulic system thereof,, when the debugging mould, need not again mould to be installed on the bedding-in forcing press to debug, can directly on hydraulic press, debug so that common hydraulic press has the bedding-in function.
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
See also Fig. 1, the front view of the hydraulic system that Fig. 1 the utility model embodiment provides.
Wherein, 1 is first oil pump, and 2 is second oil pump, 3 is first overflow valve, and 4 is second overflow valve, and 5 is the first pumping hole pressure safety valve, 6 is the second pumping hole pressure safety valve, 7 is first flow speed control valve, and 8 is second flow speed control valve, and 9 is check valve, 10 is check valve, 11 is pressure safety valve, and 12 is Solenoid ball valve, and 13 is hydraulic cylinder.
The hydraulic system of the hydraulic press that the utility model provides, the main hydraulic system that comprises the hydraulic cylinder works of controlling hydraulic press, main hydraulic system is the system when driving hydraulic press work, and its piston speed that drives hydraulic cylinder is very fast, can realize the punching operation to workpiece.Comprise that also realization is to the auxiliary hydraulic system of the mould type debugging operations on the hydraulic press and the change-over switch of switching described main hydraulic system and described auxiliary hydraulic system.Wherein, the auxiliary hydraulic system that the utility model provides comprises: be connected the first hydraulic pressure branch road between the epicoele of described main hydraulic system and described hydraulic cylinder, and be connected the second hydraulic pressure branch road between the cavity of resorption of described main hydraulic system and described hydraulic cylinder.
Wherein, the first hydraulic pressure branch road comprises first oil pump 1 that links to each other with fuel tank and first flow speed control valve 7 that links to each other by pipeline with this oil pump 1.The fuel delivery of first oil pump 1 can be regulated arbitrarily through first flow speed control valve 7, and this moment, main hydraulic system was no longer to hydraulic cylinder epicoele fuel feeding.
Wherein, the second hydraulic pressure branch road comprises second oil pump 2 that links to each other with fuel tank and second flow speed control valve 8 and the pressure safety valve 11 that links to each other by pipeline with this oil pump 2.The fuel delivery of second oil pump 2 no longer changes after second flow speed control valve 8 mixes up.In addition, because this road hydraulic system inserts the cavity of resorption of hydraulic cylinder, need to consider that the hydraulic cylinder cavity of resorption supports problem, prevent that hydraulic cylinder from together falling together with the motor-driven beam of hydraulic pressure (slide block), cause the accident, so connect a pressure safety valve 11 in the back of second flow speed control valve 8, it is too low that the pressure of pressure safety valve 11 does not allow to transfer, during the pressure of calculating pressure safety valve 11, the piston rod that must support moving beam and hydraulic cylinder adds the weight of mold, need set certain safety coefficient in case of necessity.
In sum, the utility model is by being provided with auxiliary hydraulic system, and can between described main hydraulic system and auxiliary hydraulic system, change by change-over switch, when mould need be debugged, then can work system be converted to auxiliary hydraulic system by change-over switch, to reach the lower decrease speed of slide block, satisfy the requirement of die debugging.Auxiliary hydraulic system is the main hydraulic system work of fluid,matching press, the main feature of auxiliary hydraulic system is: can realize die debugging or repair a die needed decline at a slow speed, speed generally requires about 0.1~0.5mm/s, and operates steadily, no creeping phenomenon.Can pass through change-over switch in addition, when the bedding-in function, each crawl can realize that slippage is controlled in the 0.05mm accuracy rating.The simple structure of the utility model patent and responding fast, handling safety, simple, practical.
In order further to optimize technique scheme, first flow speed control valve 7 that the utility model provides is proportional velocity regulating valve.Proportional velocity regulating valve is furnished with ratio and amplifies card, can import different current values, regulates the flow by flow speed control valve, thus the speed of service of regulator solution cylinder pressure.Second flow speed control valve 8 that the utility model provides is preferably the manual governing valve.In the debug process, need constantly to regulate the handle of manual governing valve, be transferred to a rational fuel delivery and supply with the hydraulic cylinder cavity of resorption.
The exit of first oil pump 1 also is connected with first overflow valve 3 and the first pumping hole pressure safety valve 5.Can set the highest charge oil pressure that first oil pump 1 exports by the first pumping hole pressure safety valve 5, its pressure can show by the anti-Pressure gauge that shakes of serial connection.
The utility model also comprise between the epicoele that is connected described proportional velocity regulating valve and described hydraulic cylinder by the check valve 9 of proportional velocity regulating valve to the epicoele conducting of hydraulic cylinder.Hydraulic oil enters in the proportional velocity regulating valve when preventing main hydraulic system work, damages proportional velocity regulating valve.
The exit of second oil pump 2 is connected with second overflow valve 4 and the second pumping hole pressure safety valve 6.Can set the highest charge oil pressure that second oil pump 2 exports by the second pumping hole pressure safety valve 6, its pressure can show by the anti-Pressure gauge that shakes of serial connection.First overflow valve 3 and described second overflow valve 4 all are preferably precursor overflow valve.
The utility model also comprise between the cavity of resorption that is connected described manual governing valve and described hydraulic cylinder by the check valve 10 of manual governing valve to the cavity of resorption conducting of hydraulic cylinder.Be connected with Solenoid ball valve 12 between the cavity of resorption of pressure safety valve 11 and hydraulic cylinder.Hydraulic oil entered in the manual governing valve when Solenoid ball valve 12 and check valve 10 can prevent main hydraulic system work, damaged the manual governing valve.The cavity of resorption that guarantees hydraulic cylinder is under the situation that all solenoid directional control valves all cut out, and the cavity of resorption oil of hydraulic cylinder can not leak from other any passage.
The utility model also provides a kind of hydraulic press with above-mentioned auxiliary hydraulic system.
Concrete operation principle of the present utility model is: when hydraulic press need use the bedding-in function, be transformed under the bedding-in functional status with change-over switch, this moment, main hydraulic system did not participate in work.Hydraulic cylinder epicoele fuel feeding is by a permanent power oil pump (first oil pump 1) fuel feeding, and passing ratio flow speed control valve (first flow speed control valve 7) is regulated and supplied with oil mass.The hydraulic cylinder cavity of resorption is set a rational fuel delivery simultaneously by a permanent power oil pump (first oil pump 2) fuel feeding by manual governing valve (second flow speed control valve 8), plays the effect of a support, makes the hydraulic cylinder cavity of resorption that certain back pressure be arranged.Otherwise under this downstream state at a slow speed, creeping phenomenon can appear in hydraulic press.
According to above-mentioned operation principle specific implementation method be: hydraulic cylinder 13 is when moving than jogging speed, hydraulic cylinder epicoele fuel feeding is by first oil pump, 1 fuel feeding, the first oil pump mouth is connected to the precursor overflow valve and the first pumping hole pressure safety valve 5, can set the highest charge oil pressure of the first oil pump mouth by the first pumping hole pressure safety valve 5, its pressure can show by the anti-Pressure gauge that shakes of serial connection.First oil pump, 1 hydraulic oil enters into proportional velocity regulating valve by oil pipe, and proportional velocity regulating valve is furnished with ratio and amplifies card, can import different current values, regulates the flow of passing ratio flow speed control valve, thus the speed of service of regulator solution cylinder pressure.Be connected to a check valve 9 before the proportional velocity regulating valve, hydraulic oil enters in the proportional velocity regulating valve when preventing main hydraulic system work, damages proportional velocity regulating valve.
During the hydraulic cylinder slow running, its cavity of resorption is by second oil pump, 2 fuel feeding, the second oil pump mouth is connected to the precursor overflow valve and the second pumping hole pressure safety valve 6, and the logical second pumping hole pressure safety valve 6 can be set the highest charge oil pressure of the second oil pump mouth, and its pressure can show by the anti-Pressure gauge that shakes of serial connection.Second oil pump, 2 hydraulic oils enter into the manual governing valve by oil pipe, in the debug process, need constantly to regulate the handle of manual governing valve, are transferred to a rational fuel delivery and supply with the hydraulic cylinder cavity of resorption.Pressure safety valve 11 need be regulated the pressure of its setting according to the weight that supports, and plays the effect of safeguard protection.Hydraulic oil entered in the manual governing valve when Solenoid ball valve 12 and check valve 10 can prevent main hydraulic system work, damaged the manual governing valve.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.

Claims (10)

1. the hydraulic system of a hydraulic press, comprise the main hydraulic system of controlling hydraulic cylinder works, it is characterized in that, also comprise auxiliary hydraulic system, this auxiliary hydraulic system comprises: be connected the first hydraulic pressure branch road between the epicoele of fuel tank and described hydraulic cylinder, and be connected the second hydraulic pressure branch road between the cavity of resorption of fuel tank and described hydraulic cylinder;
The described first hydraulic pressure branch road comprises first oil pump (1) that links to each other with fuel tank and first flow speed control valve (7) that links to each other by pipeline with this oil pump (1);
The described second hydraulic pressure branch road comprises second oil pump (2) that links to each other with fuel tank and second flow speed control valve (8) and the pressure safety valve (11) that links to each other by pipeline with this oil pump (2).
2. hydraulic system as claimed in claim 1 is characterized in that, described first flow speed control valve (7) is a proportional velocity regulating valve.
3. hydraulic system as claimed in claim 1 is characterized in that, described second flow speed control valve (8) is the manual governing valve.
4. hydraulic system as claimed in claim 1 is characterized in that, the exit of described first oil pump (1) is connected with first overflow valve (3) and the first pumping hole pressure safety valve (5).
5. hydraulic system as claimed in claim 2 is characterized in that, also comprise between the epicoele that is connected described proportional velocity regulating valve and described hydraulic cylinder by the check valve of proportional velocity regulating valve to the epicoele conducting of hydraulic cylinder.
6. hydraulic system as claimed in claim 4 is characterized in that, the exit of described second oil pump (2) is connected with second overflow valve (4) and the second pumping hole pressure safety valve (6).
7. hydraulic system as claimed in claim 6 is characterized in that, described first overflow valve (3) and described second overflow valve (4) are precursor overflow valve.
8. hydraulic system as claimed in claim 3 is characterized in that, also comprise between the cavity of resorption that is connected described manual governing valve and described hydraulic cylinder by the check valve of manual governing valve to the cavity of resorption conducting of hydraulic cylinder.
9. hydraulic system as claimed in claim 8 is characterized in that, also comprises the Solenoid ball valve (12) between the cavity of resorption that is connected pressure safety valve (11) and described hydraulic cylinder.
10. a hydraulic press is characterized in that, comprises each described hydraulic system as claim 1-9.
CN 201020292224 2010-08-09 2010-08-09 Hydraulic press with debugging function and hydraulic system thereof CN201833622U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201020292224 CN201833622U (en) 2010-08-09 2010-08-09 Hydraulic press with debugging function and hydraulic system thereof

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Application Number Priority Date Filing Date Title
CN 201020292224 CN201833622U (en) 2010-08-09 2010-08-09 Hydraulic press with debugging function and hydraulic system thereof

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102489613A (en) * 2011-12-31 2012-06-13 苏州东风精冲工程有限公司 High-precision continuous stamping die system
CN102588393A (en) * 2012-03-12 2012-07-18 山东法因数控机械股份有限公司 High-speed punching hydraulic circuit of hydraulic punching machine
CN103362884A (en) * 2012-04-01 2013-10-23 迪斯油压工业(昆山)有限公司 Hydraulic lifting control device
CN105443468A (en) * 2014-09-19 2016-03-30 福伊特专利有限公司 Hydraulic drive with rapid stroke and load stroke
CN105736489A (en) * 2014-12-08 2016-07-06 佛山市恒力泰机械有限公司 Movable-beam speed-regulation oil way structure of hydraulic pressing machine
CN109624386A (en) * 2018-12-21 2019-04-16 辽宁忠旺机械设备制造有限公司 500 tons of four-column hydraulic press servo-control systems

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102489613A (en) * 2011-12-31 2012-06-13 苏州东风精冲工程有限公司 High-precision continuous stamping die system
CN102588393A (en) * 2012-03-12 2012-07-18 山东法因数控机械股份有限公司 High-speed punching hydraulic circuit of hydraulic punching machine
CN103362884A (en) * 2012-04-01 2013-10-23 迪斯油压工业(昆山)有限公司 Hydraulic lifting control device
CN103362884B (en) * 2012-04-01 2016-03-30 迪斯油压工业(昆山)有限公司 hydraulic lifting control device
CN105443468A (en) * 2014-09-19 2016-03-30 福伊特专利有限公司 Hydraulic drive with rapid stroke and load stroke
CN105736489A (en) * 2014-12-08 2016-07-06 佛山市恒力泰机械有限公司 Movable-beam speed-regulation oil way structure of hydraulic pressing machine
CN105736489B (en) * 2014-12-08 2018-01-05 佛山市恒力泰机械有限公司 A kind of dynamic beam speed governing oil channel structures of hydraulic press
CN109624386A (en) * 2018-12-21 2019-04-16 辽宁忠旺机械设备制造有限公司 500 tons of four-column hydraulic press servo-control systems

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CP01 Change in the name or title of a patent holder

Address after: 230601 Hefei economic and Technological Development Zone, Anhui, No. 123 Ziyun Road

Patentee after: Hefei forging machine tool Limited by Share Ltd

Address before: 230601 Hefei economic and Technological Development Zone, Anhui, No. 123 Ziyun Road

Patentee before: Hefei Metalforming Machine Tools Co., Ltd.

C56 Change in the name or address of the patentee

Owner name: HEFEI METALFORMING MACHINE TOOL CO., LTD.

Free format text: FORMER NAME: HEFEI METALFORMING MACHINE TOOL LIMITED

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110518

Termination date: 20180809

CF01 Termination of patent right due to non-payment of annual fee