CN205089714U - Pneumatic cylinder oil piping system of numerical control hydraulic pressure sheet material tubulation make -up machine - Google Patents
Pneumatic cylinder oil piping system of numerical control hydraulic pressure sheet material tubulation make -up machine Download PDFInfo
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Abstract
The utility model discloses a pneumatic cylinder oil piping system of numerical control hydraulic pressure sheet material tubulation make -up machine belongs to bender hydraulic system field. It includes oil tank, integrated oil circuit piece and pneumatic cylinder, integrated oil circuit piece include tribit four way solenoid valve, electromagnetism stop valve, back pressure valve and hydraulically controlled check valve, tribit four way solenoid valve's P mouth connect into oil pipe way, the T mouth connects to the oil tank, the A mouth passes through the electromagnetism stop valve to be connected with the cavity of resorption of pneumatic cylinder, the B mouth is connected with the epicoele of pneumatic cylinder, back pressure valve and electromagnetism stop valve parallelly connected, the oil inlet of hydraulically controlled check valve connect to the oil tank, the control port connection control oil circuit of the epicoele of pneumatic cylinder, hydraulically controlled check valve is connected to the oil -out of check valve. The utility model discloses accurate stable the going on of control, simple structure is compact, does not have to leak, and work efficiency is high, practices thrift the energy consumption, reduces equipment cost.
Description
Technical field
The utility model belongs to numerical control bending machine hydraulic system, more particularly, relates to a kind of oil hydraulic cylinder oil-way system of numerical-control hydraulic sheet metal tubulation forming machine.
Background technique
Bender comprises support, worktable and clamping panel, and worktable is placed on support, and worktable is made up of base and pressing plate, base is connected with clamping panel by hinge, base is made up of seat shell, coil and cover plate, and coil is placed in the depression of a shell, and recessed top is covered with cover plate.During use by wire to coil electricity, after energising, gravitation is produced to pressing plate, thus realizes clamping to thin plate between pressing plate and base.Owing to have employed electromagnetic force clamping, make pressing plate can make various workpieces requirement, and can process having the workpiece of sidewall.
When reality uses, when plate width is greater than bender length, need be bound up two independent numerical-control hydraulic sheet metal tubulation forming machines use, collaborative work, it requires that two benders can synchronous coordination work, and the oil hydraulic cylinder as driving element is that they can realize the key of synchronous working, so very important to the control of oil hydraulic cylinder oil-way system, require its control fast under, work enters, pressurize, the working procedure such as to return to and have good performance, system synchronization progress is high.
In prior art, the hydraulic system of a lot of bender is all that simple fuel feeding reaches process and backhaul function to oil hydraulic cylinder, structure is comparatively simple, if China Patent Publication No. is CN102518613A, publication date is the patent documentation on June 27th, 2012, disclose a kind of bender hydraulic system, it comprises oil pump, fuel tank, three position four-way directional control valve, and liquid-filling valve is connected between fuel tank and cylinder upper cavity oil; The oil outlet of oil pump is through two-way plug-in valve connected tank; The P mouth of three position four-way directional control valve connects the oil outlet of oil pump, and B mouth connects oil cylinder cavity of resorption through the first solenoid directional control valve; B mouth also connects the control mouth of liquid-filling valve; The A mouth of three position four-way directional control valve connects cylinder upper cavity oil through throttling one-way valve; B mouth also connects oil cylinder cavity of resorption through the second solenoid directional control valve, throttle valve.
And for example China Patent Publication No. is CN103334971A, publication date is the patent documentation on October 2nd, 2013, disclose a kind of electric-hydraulic proportion numerical control bender hydraulic control system, it is communicated with No. second liquid-filling valve with number one liquid-filling valve respectively by the working hole of two-position four-way solenoid directional control valve, the working hole of three-position four-way electromagnetic directional valve is communicated with one end of damper, the working hole of three-position four-way electromagnetic directional valve is communicated with the oil outlet of sutaining valve, the oil outlet of electromagnet cut off valve is communicated with the filler opening of No. second one-way valve, number one liquid-filling valve is communicated with the plug chamber of No. second oil cylinder with number one oil cylinder respectively with the oil outlet of No. second liquid-filling valve, number one liquid-filling valve is communicated with fuel tank respectively with the filler opening of No. second liquid-filling valve.Program structure is comparatively simple, adoption rate cartridge valve, and external form volume is little, and working stability is reliable, without revealing, working efficiency is high, reduces equipment manufacturing cost, level of integration is high, the pressure of computer controlled system, is widely used in computer control numerical control bender hydraulic control system.
The hydraulic system of above-mentioned two kinds of benders, equal can realize fast under, work enters, release, backhaul four process, but they are relatively weak in system pressure maintaining performance, on numerical-control hydraulic sheet metal tubulation forming machine complete machine synchronous synergetic ability and offset load resistance more weak, be further improved.
Summary of the invention
The problem that 1, will solve
For the HYDRAULIC CONTROL SYSTEM oil hydraulic cylinder of existing bender under fast, work is entered, pressurize, the operation such as release and backhaul is perfect not, the problem that complete machine anti-bias load performance is more weak, the utility model provides a kind of oil hydraulic cylinder oil-way system of numerical-control hydraulic sheet metal tubulation forming machine, the oil hydraulic cylinder that can control numerical-control hydraulic sheet metal tubulation forming machine carries out soon, work is entered, pressurize, the precise and stable of the operation such as release and backhaul carries out, this oil circuit is integrated on a manifold block, simple and compact for structure, control accurately, No leakage, working efficiency is high, energy efficient, reduce equipment manufacturing cost, complete machine has good offset load resistance.
2, technological scheme
For solving the problem, the utility model adopts following technological scheme.
An oil hydraulic cylinder oil-way system for numerical-control hydraulic sheet metal tubulation forming machine, comprises fuel tank, integrated oil way block and oil hydraulic cylinder, and described integrated oil way block comprises three position four-way electromagnetic valve, electromagnet cut off valve, back pressure valve and Pilot operated check valve; The P mouth of described three position four-way electromagnetic valve taps into oil pipe line, and T mouth is connected to fuel tank, and A mouth is connected with the cavity of resorption of oil hydraulic cylinder by electromagnet cut off valve, and B mouth is connected with the epicoele of oil hydraulic cylinder; Described back pressure valve is in parallel with electromagnet cut off valve; The filler opening of described Pilot operated check valve is connected to fuel tank, the epicoele of the oil outlet connecting fluid cylinder pressure of one-way valve, the control port connection control oil circuit of Pilot operated check valve.
Further, described integrated oil way block also comprises safety valve; Described safety valve is connected between the cavity of resorption of oil hydraulic cylinder and fuel tank.
Further, also one-way valve is comprised; Described one-way valve is arranged on the in-line that is connected with three position four-way electromagnetic valve.
Further, also comprise throttle valve, described throttle valve is in parallel with electromagnet cut off valve after connecting with back pressure valve.
Further, described three position four-way electromagnetic valve is electro-hydraulic proportion reversing valve.
3, beneficial effect
Compared to prior art, the beneficial effects of the utility model are:
(1) the utility model realizes carrying out soon the oil hydraulic cylinder of numerical-control hydraulic sheet metal tubulation forming machine by the combination of hydraulic component on integrated manifold block, work is entered, pressurize, the precise and stable control of the operation such as release and backhaul, compact structure, level of integration is high, in integrated oil way block, three position four-way electromagnetic valve completes the oil-feed direction adjustment of oil cylinder upper and lower cavity, electromagnet cut off valve is with the use of the fast lower operation of realization, back pressure valve realize system work in parallel with electromagnet cut off valve enters pressurize operation, in addition, Pilot operated check valve compensates and quick emptying by carrying out fluid to oil hydraulic cylinder epicoele, better complete oil hydraulic cylinder descend soon and return to operation, use the bender offset load resistance of this system strong,
(2) there is safety valve in integrated oil way block of the present utility model, oil hydraulic cylinder cavity of resorption oil pressure can be prevented too high, protect whole oil-way system, improve integrated oil way block and hydraulic cylinder life;
(3) the utility model is provided with one-way valve on the in-line connecting three position four-way electromagnetic valve, facilitates integrated oil way block to receive on in-line, facilitates system maintenance;
(4) three position four-way electromagnetic valve of the present utility model adopts electro-hydraulic proportion reversing valve, this kind of valve can by changing the input current of electromagnet, not only can change the working solution flow direction of valve, and the size that can control valve port realizes Flow-rate adjustment, namely there is commutation, there is again the complex function of throttling, greatly improve the control action of whole oil-way system.
Accompanying drawing explanation
Fig. 1 is hydraulic system principle figure of the present utility model;
Fig. 2 is the working state figure of each hydraulic element of the present utility model.
In figure: 1, three position four-way electromagnetic valve; 2, electromagnet cut off valve; 3, back pressure valve; 4, Pilot operated check valve; 5, oil hydraulic cylinder; 6, safety valve; 7, one-way valve.
Embodiment
Below in conjunction with specific embodiments and the drawings, the utility model is described further.
Embodiment 1
As shown in Figure 1, the oil hydraulic cylinder oil-way system of a kind of numerical-control hydraulic sheet metal tubulation forming machine of the present embodiment, it comprises fuel tank, integrated oil way block, oil hydraulic cylinder 5 and one-way valve 7; Wherein, described integrated oil way block comprises three position four-way electromagnetic valve 1, electromagnet cut off valve 2, back pressure valve 3, Pilot operated check valve 4, safety valve 6 and throttle valve.The P mouth of described three position four-way electromagnetic valve 1 taps into oil pipe line after one-way valve 7, and T mouth is connected to fuel tank, and A mouth is connected with the cavity of resorption of oil hydraulic cylinder 5 by electromagnet cut off valve 2, and B mouth is connected with the epicoele of oil hydraulic cylinder 5.In the present embodiment, three position four-way electromagnetic valve 1 is electro-hydraulic proportion reversing valve, can by changing the input current of electromagnet, not only can change the working solution flow direction of valve, and the size that can control valve port realizes Flow-rate adjustment, namely there is commutation, there is again the complex function of throttling, greatly improve the control action of whole oil-way system.Described back pressure valve 3 and throttle valve are in parallel with electromagnet cut off valve 2 after connecting, namely the cavity of resorption of oil hydraulic cylinder 5, throttle valve, back pressure valve 3 are connected by pipeline in turn with the A mouth of three position four-way electromagnetic valve 1, the structural type adopting throttle valve and back pressure valve 3 to connect with only adopt compared with back pressure valve 3, can better to the Stress control of oil hydraulic cylinder 5 cavity of resorption, make pressurize operation more precise and stable, highly sensitive.The filler opening of described Pilot operated check valve 4 is connected to fuel tank, the epicoele of the oil outlet connecting fluid cylinder pressure 5 of Pilot operated check valve 4, the control port connection control oil circuit of Pilot operated check valve 4; When fast lower operation, Pilot operated check valve 4 forward is opened, the epicoele of the fluid inhalant liquid cylinder pressure 5 in fuel tank, carries out supplementing of fluid; When returning to operation, Pilot operated check valve 4 is oppositely opened under oil circuit control effect, and the epicoele of oil hydraulic cylinder 5 flows back to fuel tank, ensures oil hydraulic cylinder 5 draining fast.
In the present embodiment, between the cavity of resorption and fuel tank of oil hydraulic cylinder 5, be connected with safety valve 6, and the oil pressure relief that safety valve 6 sets is higher than back pressure valve 3 by 10%, effectively can prevent oil hydraulic cylinder 5 cavity of resorption overpressure.
In the present embodiment, on three position four-way electromagnetic valve 1, two ends electromagnet represents with SPRO1 and SP01 respectively, and the electromagnet of electromagnet cut off valve 2 is expressed as SO1.Below the working procedure of system is described in detail.
1. under fast: the SPRO1 of three position four-way electromagnetic valve 1 obtains electric, the SO1 of electromagnet cut off valve 2 obtains electric, fluid is by the epicoele of Pilot operated check valve 4 inhalant liquid cylinder pressure 5, in in-line, pressure oil enters the epicoele of oil hydraulic cylinder 5 through three position four-way electromagnetic valve 1 in addition, the fluid of oil hydraulic cylinder 5 cavity of resorption gets back to fuel tank through electromagnet cut off valve 2, three position four-way electromagnetic valve 1, the piston of oil hydraulic cylinder 5 stretches out, and realizes fast lower operation.Speed under fast obtains by regulating the valve port opening of three position four-way electromagnetic valve 1.
2. work is entered: the SPRO1 of three position four-way electromagnetic valve 1 obtains electric, the SO1 dead electricity of electromagnet cut off valve 2, in in-line, fluid enters the epicoele of oil hydraulic cylinder 5 through three position four-way electromagnetic valve 1, the fluid of oil hydraulic cylinder 5 cavity of resorption is through throttle valve, back pressure valve 3 and three position four-way electromagnetic valve 1 oil sump tank, the piston rod of oil hydraulic cylinder 5 slowly stretches out, and the working pressure of oil hydraulic cylinder 5 cavity of resorption is set by back pressure valve 3.Safety valve 6 prevents the oil pressure of oil hydraulic cylinder 5 cavity of resorption too high, obtains different work speeds by regulating the valve port opening of three position four-way electromagnetic valve 1.
3. pressurize: when oil hydraulic cylinder 5 arrives after bottom dead center, three position four-way electromagnetic valve 1 must not be electric, makes it remain on meta, thus the path in the upper and lower chamber of cutting-off liquid cylinder pressure 5, the piston rod of oil hydraulic cylinder 5 stays lower dead centre.
4. release: after pressurize terminates, the SPO1 of three position four-way electromagnetic valve 1 obtains certain voltage, and three position four-way electromagnetic valve 1 trace is opened, and the piston rod of oil hydraulic cylinder 5 can be slowly up, Top Runby can adjust by regulating numerical control system parameter, and the stress-relief process time used is by decompression rate setting parameter.
5. return to: the SPO1 of three position four-way electromagnetic valve 1 obtains electric, the SO1 dead electricity of electromagnet cut off valve 2, Pilot operated check valve 4 is oppositely opened under the effect of control oil, pressure oil through three position four-way electromagnetic valve 1, electromagnet cut off valve 2 to the cavity of resorption of oil hydraulic cylinder 5, the fluid of oil hydraulic cylinder 5 epicoele gets back to fuel tank through Pilot operated check valve 4, completes and returns to operation.Opening speed is also by regulating the valve port opening of three position four-way electromagnetic valve 1 to obtain.
In above-mentioned working procedure, the working state of each hydraulic element as shown in Figure 2.
Each hydraulic element concentrate in together by integrated oil way block of the present utility model, compact structure, facilitate line arrangement and installation, combinationally using of each element, system highly sensitive, controls precise and stable, No leakage, working efficiency is high, energy efficient, reduces equipment manufacturing cost; The offset load resistance with the numerical-control hydraulic sheet metal tubulation forming machine of this system is strong.
Schematically above be described the utility model and mode of execution thereof, this description does not have restricted, and also just one of the mode of execution of the present utility model shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the utility model and creating aim, design the mode of structure similar to this technological scheme and embodiment without creationary, protection domain of the present utility model all should be belonged to.
Claims (5)
1. the oil hydraulic cylinder oil-way system of a numerical-control hydraulic sheet metal tubulation forming machine, comprise fuel tank, integrated oil way block and oil hydraulic cylinder (5), it is characterized in that: described integrated oil way block comprises three position four-way electromagnetic valve (1), electromagnet cut off valve (2), back pressure valve (3) and Pilot operated check valve (4); The P mouth of described three position four-way electromagnetic valve (1) taps into oil pipe line, and T mouth is connected to fuel tank, and A mouth is connected with the cavity of resorption of oil hydraulic cylinder (5) by electromagnet cut off valve (2), and B mouth is connected with the epicoele of oil hydraulic cylinder (5); Described back pressure valve (3) is in parallel with electromagnet cut off valve (2); The filler opening of described Pilot operated check valve (4) is connected to fuel tank, the epicoele of the oil outlet connecting fluid cylinder pressure (5) of one-way valve (4), the control port connection control oil circuit of Pilot operated check valve (4).
2. the oil hydraulic cylinder oil-way system of a kind of numerical-control hydraulic sheet metal tubulation forming machine according to claim 1, is characterized in that: described integrated oil way block also comprises safety valve (6); Between the cavity of resorption that described safety valve (6) is connected to oil hydraulic cylinder (5) and fuel tank.
3. the oil hydraulic cylinder oil-way system of a kind of numerical-control hydraulic sheet metal tubulation forming machine according to claim 2, is characterized in that: also comprise one-way valve (7); Described one-way valve (7) is arranged on the in-line that is connected with three position four-way electromagnetic valve (1).
4. the oil hydraulic cylinder oil-way system of a kind of numerical-control hydraulic sheet metal tubulation forming machine according to claim 1, is characterized in that: also comprise throttle valve, and described throttle valve is in parallel with electromagnet cut off valve (2) after connecting with back pressure valve (3).
5. according to the oil hydraulic cylinder oil-way system of a kind of numerical-control hydraulic sheet metal tubulation forming machine in claim 1-4 described in any one, it is characterized in that: described three position four-way electromagnetic valve (1) is electro-hydraulic proportion reversing valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520881838.6U CN205089714U (en) | 2015-11-03 | 2015-11-03 | Pneumatic cylinder oil piping system of numerical control hydraulic pressure sheet material tubulation make -up machine |
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| CN201520881838.6U CN205089714U (en) | 2015-11-03 | 2015-11-03 | Pneumatic cylinder oil piping system of numerical control hydraulic pressure sheet material tubulation make -up machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106112322A (en) * | 2016-07-26 | 2016-11-16 | 南京国际船舶设备配件有限公司 | A kind of marine low-speed machine air valve welding robot workstation air-path control system |
| CN108626205A (en) * | 2018-04-13 | 2018-10-09 | 安徽天水液压机床科技有限公司 | A kind of multi-machine parallel connection numerical-control hydraulic sheet metal tubulation molding machine hydraulic system |
| CN110131225A (en) * | 2019-04-02 | 2019-08-16 | 太原重工股份有限公司 | A kind of hydraulic control circuit and method of bender lower die locking cylinder |
-
2015
- 2015-11-03 CN CN201520881838.6U patent/CN205089714U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106112322A (en) * | 2016-07-26 | 2016-11-16 | 南京国际船舶设备配件有限公司 | A kind of marine low-speed machine air valve welding robot workstation air-path control system |
| CN108626205A (en) * | 2018-04-13 | 2018-10-09 | 安徽天水液压机床科技有限公司 | A kind of multi-machine parallel connection numerical-control hydraulic sheet metal tubulation molding machine hydraulic system |
| CN110131225A (en) * | 2019-04-02 | 2019-08-16 | 太原重工股份有限公司 | A kind of hydraulic control circuit and method of bender lower die locking cylinder |
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