CN202360494U - Bending machine hydraulic system - Google Patents
Bending machine hydraulic system Download PDFInfo
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- CN202360494U CN202360494U CN2011204958971U CN201120495897U CN202360494U CN 202360494 U CN202360494 U CN 202360494U CN 2011204958971 U CN2011204958971 U CN 2011204958971U CN 201120495897 U CN201120495897 U CN 201120495897U CN 202360494 U CN202360494 U CN 202360494U
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Abstract
The utility model aims to solve the problems of complex relief circuit, low back pressure control stability, inconvenient installation of the valve set, heavy product, low power-intensity ratio and the like in the existing bending machine hydraulic control system, and provides a bending machine hydraulic system which has the advantages of simple structure, high control reliability and can regulate the back pressure freely. The bending machine hydraulic system provided by the utility model comprises an oil pump, an oil tank and a three-position four-way reversing valve, wherein a prefill valve is connected between the oil tank and the upper cavity of an oil cylinder; an oil outlet of the oil pump is connected to the oil tank through a two-way cartridge valve; a P port of the three-position four-way reversing valve 30 is connected to an oil outlet of the oil pump, and a B port is connected to the lower cavity of the oil cylinder through a first electromagnetic reversing valve 40; the B port is also connected to a control port of the prefill valve; an A port of the three-position four-way reversing valve 30 is connected to the upper cavity of the oil cylinder through a throttling one-way valve 20; and the B port is also connected to the lower cavity of the oil cylinder through a second electromagnetic reversing valve 50 and a throttling valve 60.
Description
Technical field
Present technique relates to a kind of bender hydraulic control system, specifically, is the synchronous bender hydraulic control system of a kind of non-electro-hydraulic servo, is particularly useful for turning round the bender hydraulic control of types such as axle is synchronous, Hydraulic Synchronizing.
Background technique
The at present domestic hydraulic control system principle of turning round a Synchronous Bending machine is similar, and basically become decades, and hydraulic package all is to adopt domestic general board-like installation valve.Whole hydraulic control valve group quality is big and power density ratio is low.
The relief circuit of the hydraulic system of existing bender is complicated.
In addition, the hydraulic system of existing bender, in lathe fast following time,, the oil of oil cylinder cavity of resorption is through the direct oil sump tank of Pilot operated check valve, few one controlling unit, Security is not enough; Backpressure regulation is directly to control through pressure valve, and is easy because the card valve causes not having the worker to be advanced, thereby influences the stability of lathe; Its automatically controlled part is loaded down with trivial details, 6 of electromagnetic coil up.
Summary of the invention
Present technique solves be existing bender hydraulic control system relief circuit complicated with problems such as the back pressure control stability is not high and the valve group is installed trouble and product is heavy, power density ratio is low, provide a kind of simple in structure, control reliably, the bender hydraulic system that can regulate arbitrarily of back pressure.
The bender hydraulic system of present technique comprises oil pump, fuel tank, three position four-way directional control valve, and liquid-filling valve is connected between fuel tank and the oil cylinder epicoele; The oil outlet of oil pump is through the two-way plug-in valve connected tank; The P mouth of three position four-way directional control valve 30 connects the oil outlet of oil pump, and the B mouth connects the oil cylinder cavity of resorption through first solenoid directional control valve 40; The B mouth also connects the control mouth of liquid-filling valve; The A mouth of three position four-way directional control valve 30 connects the oil cylinder epicoele through throttling one-way valve 20; The B mouth also connects the oil cylinder cavity of resorption through second solenoid directional control valve 50, throttle valve 60.
The beneficial effect of present technique: present technique utilizes the throttling one-way valve of selector valve meta function and epicoele hydraulic fluid port to constitute relief circuit, not only simply but also reliable; Throttle valve control is adopted in back pressure control, can regulate arbitrarily according to different lathes, and no out-of-control phenomenon has improved the worker and advanced stability.
In order to overcome lathe fast following time, the oil of oil cylinder cavity of resorption is through the direct oil sump tank of Pilot operated check valve, the problem that Security is not enough; As improvement, between the T of three position four-way directional control valve 30 mouth and oil cylinder cavity of resorption, be connected to safety valve 70.
Above-mentioned bender hydraulic system, remote pressure regulating valve 10 are connected on the control mouth of two-way plug-in valve 80.Like this, come the pressure of regulator solution pressing system by remote pressure regulating valve 10 control two-way plug-in valves 80.
Above-mentioned bender hydraulic system, except that three position four-way directional control valve 30 is the plate valve, all the other control valves are cartridge valve.Preferably, oil pump directly is connected with the plug-in mounting valve body with the standard flange mode of structure.So just saved many intermediate duct, compact structure, power density ratio is big, and the general appearance size is merely 165mm * 120mm * 120mm, and weight is less than 17KG.Adopt the screw-in cartridge valve control technique, back pressure valve, solenoid directional control valve all adopt does not have the cone valve of leakage, and anti-heads has also reduced the assembly cost significantly, makes present technique have higher price performance.
Description of drawings
Fig. 1 is the hydraulic schematic diagram of present technique.
Embodiment
Below in conjunction with accompanying drawing present technique is described further.
Referring to the bender hydraulic system shown in Fig. 1, comprise oil pump 90, fuel tank 100, three position four-way directional control valve 30.Liquid-filling valve 110 is connected between fuel tank 100 and oil cylinder 120 epicoeles.The oil outlet of oil pump 90 is through two-way plug-in valve 80 connected tanks.Remote pressure regulating valve 10 connects the control mouth of two-way plug-in valve 80.
The P mouth of three position four-way directional control valve 30 connects the oil outlet of oil pump 90, and the B mouth connects the oil cylinder cavity of resorption through first solenoid directional control valve 40, and the A mouth connects the oil cylinder epicoele through flowing one-way valve 20 successively.The B mouth of three position four-way directional control valve 30 also connects the oil cylinder cavity of resorption through second solenoid directional control valve 50, throttle valve 60.The B mouth of three position four-way directional control valve 30 also connects the control mouth of liquid-filling valve 110.Between the T of three position four-way directional control valve 30 mouth and oil cylinder cavity of resorption, be connected to safety valve 70.
Except that three position four-way directional control valve 30 is the plate valve, all the other control valves are screw-in cartridge valve.
Electromagnet during referring to the system works shown in the table 1 gets dead electricity information slip (sequence of movement table), and the native system principle is introduced (working procedure) as follows:
1, pressure control: the pressure that comes the regulator solution pressing system by remote pressure regulating valve 10 control two-way plug-in valves 80.
2, down fast: the Y1 of three position four-way directional control valve 30 must not; The Y3 of the Y2 of three position four-way directional control valve 30, first solenoid directional control valve gets when electric; Pressure oil flows to throttling one-way valve 20 to oil cylinder epicoele rodless cavity by the A mouth of solenoid directional control valve 30, and the oil of oil cylinder cavity of resorption flows to first solenoid directional control valve 40, solenoid directional control valve 30 oil sump tanks.And it is oil-filled through normal close type liquid-filling valve 110 simultaneously to oil cylinder rodless cavity.
3, the worker advances: the Y3 of the Y1 of three position four-way directional control valve 30, first solenoid directional control valve must not electricity, and the Y4 of the Y2 of three position four-way directional control valve 30, second solenoid directional control valve 50 gets when electric, and liquid-filling valve 110 cuts out.Pressure oil by the A mouth of solenoid directional control valve 30 through throttling one-way valve 20 to oil cylinder epicoele rodless cavity, the oil of oil cylinder cavity of resorption flows to second solenoid directional control valve 50, throttle valve 60, solenoid directional control valve 30 oil sump tanks.The cavity of resorption back pressure is regulated through throttle valve 60.At oil cylinder cavity of resorption parallel connection safety pressure valve 70, prevent that the cavity of resorption oil pressure from raising unusually to damage oil cylinder and pipeline.
4, off-load: after the bender worker advances pressurize, Yl, Y2, Y3, Y4 dead electricity.Pressure in the oil cylinder epicoele rodless cavity is through 20 off-loads of throttling one-way valve.
5, return Y2, Y3, Y4 dead electricity, Yl gets electric, pressure oil by the B mouth of solenoid directional control valve 30 to first solenoid directional control valve 40 to oil cylinder cavity of resorption rod chamber, the hydraulic oil of oil cylinder epicoele rodless cavity is by the liquid-filling valve oil sump tank.
In the native system, after the worker advances to finish,, simple in structure through 20 off-loads of throttling one-way valve.Present technique is a modular type with the system pressure adjusted design, and functions such as ratio regulatory function, electromagnetism relief function, safety protection function can be provided.
Claims (5)
1. bender hydraulic system, it is characterized in that: comprise oil pump, fuel tank, three position four-way directional control valve, liquid-filling valve is connected between fuel tank and the oil cylinder epicoele; The oil outlet of oil pump is through the two-way plug-in valve connected tank; The P mouth of three position four-way directional control valve (30) connects the oil outlet of oil pump, and the B mouth connects the oil cylinder cavity of resorption through first solenoid directional control valve (40); The B mouth also connects the control mouth of liquid-filling valve; It is characterized in that: the A mouth of three position four-way directional control valve (30) connects the oil cylinder epicoele through throttling one-way valve (20); The B mouth also connects the oil cylinder cavity of resorption through second solenoid directional control valve (50), throttle valve (60).
2. bender hydraulic system as claimed in claim 1 is characterized in that: between the T mouth of three position four-way directional control valve (30) and oil cylinder cavity of resorption, be connected to safety valve (70).
3. bender hydraulic system as claimed in claim 1 is characterized in that: remote pressure regulating valve (10) is connected on the control mouth of two-way plug-in valve (80).
4. bender hydraulic system as claimed in claim 1 is characterized in that: except that three position four-way directional control valve (30) was plate valve, all the other control valves were cartridge valve.
5. bender hydraulic system as claimed in claim 4 is characterized in that: oil pump directly is connected with the plug-in mounting valve body with the standard flange mode of structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204958971U CN202360494U (en) | 2011-12-03 | 2011-12-03 | Bending machine hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204958971U CN202360494U (en) | 2011-12-03 | 2011-12-03 | Bending machine hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360494U true CN202360494U (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204958971U Expired - Lifetime CN202360494U (en) | 2011-12-03 | 2011-12-03 | Bending machine hydraulic system |
Country Status (1)
| Country | Link |
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| CN (1) | CN202360494U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518613A (en) * | 2011-12-03 | 2012-06-27 | 南京埃尔法电液技术有限公司 | Bender hydraulic system |
| CN103334971A (en) * | 2013-07-22 | 2013-10-02 | 邹城市博威液压机械制造有限公司 | Hydraulic control system for electric-hydraulic proportional numerical control bending machine |
| WO2018001388A1 (en) * | 2016-06-28 | 2018-01-04 | 安徽东海机床制造有限公司 | High-efficiency bending machine bending method |
-
2011
- 2011-12-03 CN CN2011204958971U patent/CN202360494U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518613A (en) * | 2011-12-03 | 2012-06-27 | 南京埃尔法电液技术有限公司 | Bender hydraulic system |
| CN103334971A (en) * | 2013-07-22 | 2013-10-02 | 邹城市博威液压机械制造有限公司 | Hydraulic control system for electric-hydraulic proportional numerical control bending machine |
| WO2018001388A1 (en) * | 2016-06-28 | 2018-01-04 | 安徽东海机床制造有限公司 | High-efficiency bending machine bending method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151104 Address after: 211100 Jiangning Economic Development Zone, Jiangsu Province, general Avenue, No. 155, No. Patentee after: Nanjing Estun Automation Co., Ltd. Address before: 211102 No. 178 Yan Hu Road, Jiangning Development Zone, Jiangsu, Nanjing, China Patentee before: Aierfa Electrohydraulic Technology Co., Ltd., Nanjing City Patentee before: Nanjing Estun Automation Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120801 |