CN105909575B - A kind of bending method of efficient bender - Google Patents
A kind of bending method of efficient bender Download PDFInfo
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- CN105909575B CN105909575B CN201610497431.2A CN201610497431A CN105909575B CN 105909575 B CN105909575 B CN 105909575B CN 201610497431 A CN201610497431 A CN 201610497431A CN 105909575 B CN105909575 B CN 105909575B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Press Drives And Press Lines (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of bending method of efficient bender, belong to bender technical field.The oil inlet of oil pump is connected with fuel tank in the present invention, and the oil-out of oil pump is connected by pipeline with the P mouths of three-position four-way electromagnetic directional valve；The T mouths of the three-position four-way electromagnetic directional valve are connected by pipeline with fuel tank, the A mouths of the three-position four-way electromagnetic directional valve are connected to the cavity of resorption of hydraulic cylinder by being superimposed valve group, the B mouths of the three-position four-way electromagnetic directional valve are connected to the epicoele of hydraulic cylinder by being superimposed valve group, and the epicoele of the hydraulic cylinder is also connected by hydraulic control one-way valve with accumulator.The present invention to bender hydraulic system by being improved, so as to the whole process to sheet metal bending：Lower work is entered pressurize pressure release and efficiently controlled soon, it is ensured that high speed, the stable and work of fast next stage enter the stability in stage, while pressurize effect is good, packing stage cylinder upper cavity oil oil pressure is stable, so as to ensure that the bending quality of sheet material.
Description
Technical field
The invention belongs to bender technical field, more specifically to a kind of bending method of efficient bender.
Background technology
With the development of processing industry, current bender product be widely used to electromechanics, metal plate, light industry, aviation, ship,
The different fields such as instrument, electrical equipment, stainless steel products, steel building and metallurgy industry, it is mainly used in shearing various steel plates, no
Become rusty steel, copper coin, aluminium sheet and nonmetallic materials sheet material, can be used for sheet material being converted into V-arrangement, arc, circle or square etc. no
Similar shape.The structure of existing bender mainly includes support, workbench and clamping plate, and workbench is placed on support, workbench by
Base and pressing plate are constituted, and base is connected by hinge with clamping plate, and base is made up of seat shell, coil and cover plate, and coil is placed in seat
In the depression of shell, recessed top is covered with cover plate.By wire to coil electricity when using, gravitation is produced to pressing plate after energization, so that
Realize the clamping to thin plate between pressing plate and base.
Bender mainly includes hydraulic bending press and the major class of numerical control bender two, wherein, hydraulic bending press is to use hydraulic pressure
System control cylinder stretches to complete the bending work to workpiece.The Bending Processing process of bender is mainly：Under fast-slow
Under-pressurize-pressure release-return, and requirement of the different process to hydraulic system is different, in order to ensure bender
Bending efficiency and the bending quality to sheet material, each of the above link need to strictly be controlled.Bender is worked
Cheng Zhong, is not only particular about precision, while productivity effect and the stability that uses also are had higher requirements, but with bender hydraulic pressure system
The continuous improvement that system control is required, original hydraulic control technology can not meet the demand of modern production.
Such as, existing slider of bender descends most of process to be under driving oil cylinder piston quick using the deadweight of sliding block soon
OK, also have plenty of using speedup cylinder structure etc., but after oil cylinder is gone at the fast speed, cylinder upper cavity oil produces negative pressure, it is necessary to which moment mends
A large amount of fluid are filled, typically all high-order repairing are realized using installing replenishing valve on fuel tank, but work is when entering, and can have negative because of cylinder upper cavity oil
Pressure, is easily emptied cylinder upper cavity oil, while replenishing valve, which is closed, is also required to process, it is necessary to wait epicoele full of closing replenishing valve ability after oil
Work is entered, and greatly reduces operating efficiency.Meanwhile, the stability for entering stage and packing stage in the bender course of work to work also will
Ask higher, and existing bender hydraulic system is difficult to ensure that work enters the stability in stage, so that workpiece bending quality is influenceed, and its
Cylinder upper cavity oil be typically not pressurize, it is necessary to continuous pressure could keep pressure, i.e. power consumption preferably rises oil temperature again, and pressurization noise is again
Greatly.
Such as, Chinese Patent Application No.：201120495897.1, the applying date：On December 03rd, 2011, invention and created name
For：Bender hydraulic system, the bender hydraulic system of this application case, including oil pump, fuel tank, three position four-way directional control valve, topping up
Valve is connected between fuel tank and cylinder upper cavity oil；The oil-out of oil pump is through two-way plug-in valve connected tank；The P mouths of three position four-way directional control valve connect
The oil-out of oil pump, B mouthfuls connect oil cylinder cavity of resorption through the first solenoid directional control valve；B mouthfuls also connect replenishing valve control mouth；3-position 4-way commutates
The A mouths of valve connect cylinder upper cavity oil through throttling one-way valve；B mouthfuls also connect oil cylinder cavity of resorption through the second solenoid directional control valve, choke valve.This application case
It can solve the problem that existing hydraulic control system of bender relief circuit is more complicated and back pressure control stability is not high to a certain extent
The problem of, but it realizes high-order repairing by the replenishing valve between fuel tank and cylinder upper cavity oil, bender descends process speed to have soon
Limit, still needs further raising, and cylinder upper cavity oil is easily emptied, and operating efficiency is relatively low, and lower and work enters the stage relatively not to bender soon
It is stable.In addition, the hydraulic system of this application case can not realize real pressure maintaining period, it is necessary to which continuous pressure could keep pressure
Power, waste of resource.
And for example, Chinese Patent Application No.：201420644782.8, the applying date is：On October 30th, 2014, innovation and creation name
Referred to as：A kind of bender hydraulic system, the hydraulic cylinder of this application case has two, and hydraulic cylinder includes epicoele and cavity of resorption, and pumping plant includes
Volume adjustable hydraulic pump and fuel tank, reversal valve include P mouthfuls, A mouthfuls, B mouthfuls and T mouthfuls, and volume adjustable hydraulic pump oil-out is connected for P mouthfuls with reversal valve,
A mouthfuls of reversal valve is connected with two oil inlets of hydraulic cylinder epicoele first respectively by pipeline, and replenishing valve is located at the second oil inlet and oil
On pipeline between case, a flowmeter, the first oil-out are respectively provided with the pipeline between replenishing valve and two the second oil inlets
It is connected by pipeline with B mouthfuls, a flowmeter, the first oil-out and B mouths is designed with the pipeline at each first oil-out
Between pipeline be provided with fuel-displaced control device.This application case can improve the security of hydraulic system, but its to a certain extent
It is also that high-order repairing is realized by the replenishing valve between fuel tank and cylinder upper cavity oil, and the system can not realize real pressurize
Process, so that plate is influenceed, the bending quality of especially elastic larger plate.
The content of the invention
1. the invention technical problem to be solved
It is an object of the invention to overcome the control accuracy, control efficiency and stability of existing bender hydraulic system difficult
To meet the demand of modern production, so as to influence sheet metal bending quality not enough, there is provided a kind of bending of efficient bender
Method.The efficient control to the whole process of sheet metal bending can be realized using the bending method of the present invention, it is ensured that the fast next stage
High speed, stable and work enter the stability in stage, while the dwell time is longer, packing stage cylinder upper cavity oil oil pressure is stable, from
And ensure that the bending quality of sheet material.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of bending method of efficient bender of the present invention, its step is：
(1) start shooting：Motor is started, electromagnetic relief valve II YV4 dead electricity is controlled, the fluid of oil pump discharge is through electromagnetism overflow
Valve I flows back to fuel tank with three-position four-way electromagnetic directional valve；Now whole hydraulic system does not produce pressure, and accumulator cavity of resorption is in pressure release shape
State, because the inflation of accumulator epicoele is less than 1MPa, accumulator oil pressure intracavitary no pressure, air bag discharges the fluid in accumulator；
(2) backhaul：Control electromagnetic relief valve I YV1 obtains electric, and the YV3 of three-position four-way electromagnetic directional valve obtains electric, electromagnetism overflow
Valve II YV4 obtains electric, and the pressure oil of oil pump output directly enters through three-position four-way electromagnetic directional valve, stacking type hydraulic control check valve respectively
Enter the cavity of resorption of hydraulic cylinder, so as to promote piston stroking upward；Now by the second control oil pipe in the presence of pressure oil by hydraulic control list
Opened to valve, the fluid of two hydraulic cylinder epicoeles is expressed to fluid in accumulator, to storage in the presence of hydraulic cylinder piston promotion
Can device topping up, be that action lower soon next time is prepared；
(3) under fast：The YV2 of control three-position four-way electromagnetic directional valve obtains electric, electromagnetic relief valve I YV1 and electromagnetic relief valve
II YV4 obtains electric, and the fluid of now oil pump output is directly entered through three-position four-way electromagnetic directional valve and stacking type hydraulic control check valve
The epicoele of hydraulic cylinder, is had accumulator pressure to be influenceed by hydraulic cylinder epicoele, and the first control oil pipe is simultaneously unidirectional by stacking type hydraulic control
Valve is opened completely, and the fluid of hydraulic cylinder cavity of resorption discharges the stacking type hydraulic control check valve after opening and three-position four-way electromagnetic directional valve
Return to fuel tank；The fluid that now oil pump and accumulator are discharged, which merges, promotes descent of piston, the deadweight of sliding block is added, so as to drive
The high-speed downstream of upper die of bending machine；
(4) work is entered：After high-speed downstream, by speed change point and electric control, make electromagnetic relief valve II YV4 dead electricity 1 second, store up
Remaining fluid moment flows back to fuel tank by electromagnetic relief valve II in energy device, and now the hydraulic oil of hydraulic cylinder epicoele does not have back pressure,
It is not turned on pressure to open stacking type hydraulic control check valve completely, the fluid of hydraulic cylinder cavity of resorption is passed through from stacking type hydraulic control check valve
Cross, the fluid of oil pump output is directly entered the epicoele of hydraulic cylinder through three-position four-way electromagnetic directional valve and stacking type hydraulic control check valve,
The piston of hydraulic cylinder realizes that work enters descending, hydraulic control one-way valve is acted on by spring force under the thrust for the hydraulic oil that oil pump is discharged
Lower automatic closing；
(5) pressurize：The YV2 of control three-position four-way electromagnetic directional valve obtains electric, electromagnetic relief valve I YV1 and electromagnetic relief valve
II YV4 obtains electric, and the fluid of oil pump output is directly entered hydraulic pressure through three-position four-way electromagnetic directional valve and stacking type hydraulic control check valve
The epicoele of cylinder, now the fluid of hydraulic cylinder cavity of resorption is by stacking type hydraulic control check valve and three-position four-way electromagnetic directional valve oil return box,
Cavity of resorption no pressure control oil can not also open hydraulic control one-way valve, and the oil of oil pump output is to be locked in cylinder upper cavity oil to carry out pressurize；
(6) pressure release：The YV2 of control three-position four-way electromagnetic directional valve obtains electric, electromagnetic relief valve II YV4 and Solenoid ball valve
YV5 obtains electric, and the fluid of oil pump output is through electromagnetic relief valve I oil return boxes, because electromagnetic relief valve II YV4 obtains electric, hydraulic cylinder epicoele
The fluid that abrupt release comes out enters intracavitary under accumulator through Solenoid ball valve；
(7) stop：Control electromagnetic relief valve II YV4 obtains electric, and now hydraulic system does not set up pressure, keeps electromagnetism to overflow
Stream valve II YV4 obtains electric, it is ensured that the fluid of hydraulic cylinder epicoele is supplemented to accumulator during sliding block backhaul so that epicoele have pressure with
Shi Shixian high-speed downstreams；
(8) shut down：The motor stall of control oil pump, now all electromagnetism dead electricity, the fluid of accumulator cavity of resorption
All discharges, hydraulic cylinder epicoele does not have pressure.
Further, described oil pump is connected with motor, and the oil inlet of oil pump is connected with fuel tank, oil pump it is fuel-displaced
Mouth is connected by pipeline with the P mouths of three-position four-way electromagnetic directional valve；The T mouths of the three-position four-way electromagnetic directional valve by pipeline with
Fuel tank is connected, and the A mouths of the three-position four-way electromagnetic directional valve are connected to the cavity of resorption of hydraulic cylinder, 3-position 4-way electricity by being superimposed valve group
The B mouths of magnetic reversal valve are connected to the epicoele of hydraulic cylinder by being superimposed valve group, the epicoele of the hydraulic cylinder by hydraulic control one-way valve with
Accumulator is connected.
Further, described superposition valve group includes stacking type hydraulic control check valve and Superimposed relief valve, wherein being superimposed
Formula hydraulic control one-way valve includes A chambers and B chambers, and the A chamber phases of the A mouths and stacking type hydraulic control check valve of three-position four-way electromagnetic directional valve
Even, the B mouths of three-position four-way electromagnetic directional valve are connected with the B chambers of stacking type hydraulic control check valve.
Further, the A chambers of the stacking type hydraulic control check valve are hydraulic control one-way valve, and its B chamber is common check valve.
Further, the A chambers of the stacking type hydraulic control check valve are changed by the first control oil pipe with 3-position 4-way electromagnetism
It is connected to the B mouths of valve.
Further, transition block, described liquid are provided between described superposition valve group and three-position four-way electromagnetic directional valve
Control check valve is connected to transition block by the second control oil pipe.
Further, described electromagnetic relief valve II is located at the oil port of accumulator, and electromagnetic relief valve II passes through
Pipeline is connected with fuel tank.
Further, described Solenoid ball valve is installed on the oil port of accumulator, Solenoid ball valve one side and hydraulic pressure
Cylinder epicoele is connected, and is on the other hand connected by electromagnetic relief valve II with fuel tank.
Further, the oil-out of the oil pump is also connected by electromagnetic relief valve I with fuel tank.
Further, electromagnetic relay is connected with the flowline of the oil pump, and the oil-out of oil pump also passes through pipe
Road is connected with pressure meter switch and pressure gauge.
3. beneficial effect
The technical scheme provided using the present invention, compared with prior art, is had the advantages that：
(1) bending method of a kind of efficient bender of the invention, is installed on hydraulic cylinder for bending machine epicoele fluid pressure line
One accumulator, and reversely lock oil is carried out by hydraulic control one-way valve, so as to pass through accumulator and oil simultaneously in the fast next stage
Pump promotes descent of piston to hydraulic cylinder epicoele fuel feeding, and along with the deadweight of sliding block, some can reach high-speed downstream with reference to more than
Speed, realize the high speed of upper die of bending machine, stablize descending.Hydraulic cylinder epicoele is band pressure condition all the time during simultaneously descending
Lower high-speed downstream, in the absence of having negative pressure or emptying phenomenon.In addition, above-mentioned accumulator carries out reversely lock oil by hydraulic control one-way valve,
So as to can also effectively prevent work from entering not rise pressure when pressurizeing, the bending effect of plate is influenceed.
(2) a kind of bending method of efficient bender of the invention, the superposition valve group special by customizing, the superposition valve group
Including stacking type hydraulic control check valve and Superimposed relief valve, the wherein B chambers of stacking type hydraulic control check valve are common check valve, and three
The B mouths of position four-way electromagnetic reversing valve are connected with the B chambers of stacking type hydraulic control check valve, during so as to effectively prevent hydraulic cylinder backhaul
The fluid of intracavitary returns to fuel tank by three-position four-way electromagnetic directional valve thereon, and the fluid of intracavitary thereon is passed through hydraulic control one-way valve
Accumulator fliud flushing is given into accumulator, is that hydraulic cylinder fast downlink is prepared.In addition, on oily integrated package using superposition valve group also
The installation empty position of valve body can be effectively reduced, is conducive to the processing of oil-way integrated block and the drop bottom of material cost, again convenient dimension
Repair.
(3) a kind of bending method of efficient bender of the invention, the oil port of its accumulator sets up electromagnetic relief valve II
And Solenoid ball valve, pressure can be turned down by electromagnetic relief valve II so that accumulator pressure repairing pressure no more than 1MPa, and
Work enters the stage by controlling electromagnetic relief valve II YV4 dead electricity that remaining fluid moment in accumulator can be made within one second to pass through electromagnetism
Overflow valve II flows back to fuel tank, it is ensured that work enters the stability in stage.Above-mentioned Solenoid ball valve is that the complete pressure release of pressurize is used, and can effectively be subtracted
It is small because of the bounce-back of bending plate back plate material and machine wallboard, open the pressure release before hydraulic control.
(4) bending method of a kind of efficient bender of the invention, by controlling the YV2 of three-position four-way valve to obtain electric, electromagnetism
Overflow valve I YV1 and electromagnetic relief valve II YV4 obtain electric, and the fluid of now oil pump output is through three-position four-way valve and superposing type liquid
Control check valve is directly entered the epicoele of hydraulic cylinder, and now the fluid of hydraulic cylinder cavity of resorption passes through stacking type hydraulic control check valve and three four
Port valve oil return box, cavity of resorption no pressure control oil can not also open hydraulic control one-way valve, and the oil of oil pump output is to be locked in hydraulic cylinder epicoele
Interior carry out pressurize, the dwell time is longer and stably, overcomes existing bender hydraulic system and is generally difficult to really realize hydraulic cylinder
The pressurize of epicoele usually requires that by replenishing valve progress continuous pressure pressure, waste of resource could be kept, and pressurize is unstable
Deficiency.
(5) a kind of bending method of efficient bender of the invention, can make each process of Bending Processing, it is such as fast under,
Work is entered, pressurize etc. can meet its it is respective it is different require, so as to ensure that the precision of whole Bending Processing, stability and bending
The crudy of efficiency and sheet material, can meet the demand of modern production.
Brief description of the drawings
Fig. 1 runs the structural representation of the hydraulic system of bender for a kind of efficient stable of the present invention.
Label declaration in schematic diagram：
1st, motor；2nd, oil pump；3rd, three-position four-way electromagnetic directional valve；4th, electromagnetic relief valve I；5th, Superimposed relief valve；6、
Stacking type hydraulic control check valve；601st, the first control oil pipe；7th, hydraulic control one-way valve；701st, the second control oil pipe；8th, accumulator；9th, liquid
Cylinder pressure；10th, electromagnetic relief valve II；11st, Solenoid ball valve；12nd, air cleaner；13rd, pressure meter switch；14th, pressure gauge；15th, it is electric
Magnetic relay；16th, fuel tank；17th, transition block.
Embodiment
To further appreciate that present disclosure, in conjunction with drawings and examples, the present invention is described in detail.
Embodiment 1
As shown in figure 1, a kind of efficient stable of the present embodiment runs the hydraulic system of bender, including oil pump 2, fuel tank
16th, hydraulic cylinder 9 and accumulator 8.Wherein, described oil pump 2 is connected with motor 1, and the oil inlet and the phase of fuel tank 16 of oil pump 2
Even, on the one hand the oil-out of oil pump 2 is connected by pipeline with the P mouths of three-position four-way electromagnetic directional valve 3, on the other hand also passes through electricity
Magnetic overflow valve I 4 is connected with fuel tank 16.The T mouths of the three-position four-way electromagnetic directional valve 3 are connected by pipeline with fuel tank 16, and this three
The A mouths of position four-way electromagnetic reversing valve 3 are connected to the cavity of resorption of hydraulic cylinder 9, the B of three-position four-way electromagnetic directional valve 3 by being superimposed valve group
Mouth is connected in the epicoele of hydraulic cylinder 9, the present embodiment by being superimposed valve group between superposition valve group and three-position four-way electromagnetic directional valve 3
Provided with transition block 17, consequently facilitating the connection of pipeline.The epicoele of the hydraulic cylinder 9 also passes through hydraulic control one-way valve 7 and the phase of accumulator 8
Even, the hydraulic control one-way valve 7 is connected to transition block 17 by the second control oil pipe 701, so that the A with stacking type hydraulic control check valve 6
Lumen road is connected.The present embodiment passes through hydraulic control by installing an accumulator 8 on hydraulic cylinder for bending machine epicoele fluid pressure line
Check valve 7 carries out reversely lock oil, so as to be supplied in the fast next stage by accumulator 8 and oil pump 2 to the epicoele of hydraulic cylinder 9 simultaneously
Oil, promotes descent of piston, and along with the deadweight of sliding block, some can reach the speed of high-speed downstream with reference to more than, realize folding
The high speed of mould on bender, stablize descending.The epicoele of hydraulic cylinder 9 is high-speed downstream under band pressure condition all the time during simultaneously descending, no
It there are negative pressure or emptying phenomenon.In addition, above-mentioned accumulator 8 carries out reversely lock oil by hydraulic control one-way valve 7, so as to can also have
Effect prevents work is entered from not rising pressure when pressurizeing, and influences the bending effect of plate.
The superposition valve group of the present embodiment includes stacking type hydraulic control check valve 6 and Superimposed relief valve 5, wherein stacking type hydraulic control
Check valve 6 includes A chambers and B chambers, and its A chamber is hydraulic control one-way valve, and the hydraulic control one-way valve passes through the first control oil pipe 601 and three four
The B mouths of electric change valve 3 are connected.The B chambers of above-mentioned stacking type hydraulic control check valve 6 are common check valve, and 3-position 4-way electromagnetism
The A mouths of reversal valve 3 are connected with the A chambers of stacking type hydraulic control check valve 6, the B mouths and stacking type hydraulic control of three-position four-way electromagnetic directional valve 3
The B chambers of check valve 6 are connected, so as to effectively prevent that the fluid of intracavitary passes through 3-position 4-way electromagnetism thereon during 9 backhaul of hydraulic cylinder
Reversal valve 3 returns to fuel tank 16, and the fluid of intracavitary thereon is entered accumulator 8 to the fliud flushing of accumulator 8 by hydraulic control one-way valve 7,
Prepared for the fast downlink of hydraulic cylinder 9.In addition, can also effectively reduce the installation of valve body using superposition valve group on oily integrated package
Empty position, is conducive to the processing of oil-way integrated block and the drop bottom of material cost, again convenient maintenance.
In the present embodiment, the oil-out of oil pump 2 and the oil inlet of accumulator 8 by pipeline and pressure meter switch 13 and
Pressure gauge 14 is connected.
Embodiment 2
As shown in figure 1, a kind of efficient stable of the present embodiment runs the hydraulic system of bender, including oil pump 2, fuel tank
16th, hydraulic cylinder 9 and accumulator 8.Wherein, described oil pump 2 is connected with motor 1, and the oil inlet and the phase of fuel tank 16 of oil pump 2
Even, on the one hand the oil-out of oil pump 2 is connected by pipeline with the P mouths of three-position four-way electromagnetic directional valve 3, on the other hand also passes through electricity
Magnetic overflow valve I 4 is connected with fuel tank 16.The T mouths of the three-position four-way electromagnetic directional valve 3 are connected by pipeline with fuel tank 16, and this three
The A mouths of position four-way electromagnetic reversing valve 3 are connected to the cavity of resorption of hydraulic cylinder 9, the B of three-position four-way electromagnetic directional valve 3 by being superimposed valve group
Mouth is connected in the epicoele of hydraulic cylinder 9, the present embodiment by being superimposed valve group between superposition valve group and three-position four-way electromagnetic directional valve 3
Provided with transition block 17.
The superposition valve group of the present embodiment includes stacking type hydraulic control check valve 6 and Superimposed relief valve 5, wherein stacking type hydraulic control
Check valve 6 includes A chambers and B chambers, and its A chamber is hydraulic control one-way valve, and the hydraulic control one-way valve passes through the first control oil pipe 601 and three four
The B mouths of electric change valve 3 are connected.The B chambers of above-mentioned stacking type hydraulic control check valve 6 are common check valve, and 3-position 4-way electromagnetism
The A mouths of reversal valve 3 are connected with the A chambers of stacking type hydraulic control check valve 6, the B mouths and stacking type hydraulic control of three-position four-way electromagnetic directional valve 3
The B chambers of check valve 6 are connected.
The epicoele of the hydraulic cylinder 9 is also connected by hydraulic control one-way valve 7 with accumulator 8, and the hydraulic control one-way valve 7 passes through second
Control oil pipe 701 is connected to transition block 17, so as to be connected with the A lumens road of stacking type hydraulic control check valve 6.Above-mentioned accumulator 8
Oil port also set up electromagnetic relief valve II 10 and Solenoid ball valve 11, wherein, electromagnetic relief valve II 10 passes through pipeline and fuel tank
16 are connected, and can be turned down pressure by electromagnetic relief valve II 10 so that the pressure repairing of accumulator 8 pressure is not more than 1MPa.Electromagnetism
The one side of ball valve 11 is connected with the epicoele of hydraulic cylinder 9, is on the other hand connected by electromagnetic relief valve II 10 with fuel tank 16.The electromagnetism
Ball valve 11 is that the complete pressure release of pressurize is used, and can effectively reduce the bounce-back because of bending plate back plate material and machine wallboard, opens hydraulic control
Preceding pressure release.
In the present embodiment, electromagnetic relay 15 is connected with the flowline of the oil pump 2, and the oil-out of oil pump 2 also leads to
Piping is connected with pressure meter switch 13 and pressure gauge 14.
First time downward actuation runs no high-speed downstream after the hydraulic system start of the present embodiment, needs a upward stroke
After can store the pressure of epicoele accumulator 8, the blowing pressure P0 of accumulator 8 (accumulator upper cavity pressure) be less than 1MPa (can root Ju not
With type and return speed and increase or reduce), coordinate electrical equipment action, the flexing movement of achievable efficient stable is (such as the institute of table 1
It is shown as the control action of each magnetic valve during different bending techniques), the bending method of efficient bender of the invention is specifically wrapped
Include procedure below：
The control action of each magnetic valve during the different bending techniques of table 1
(1) start shooting：Start motor 1, control electromagnetic relief valve II 10 YV4 dead electricity, due to electromagnetic relief valve I 4 with
The coil of three-position four-way electromagnetic directional valve (three-position four-way valve) 3 does not work, oil pump 2 discharge fluid through electromagnetic relief valve I 4 with
Three-position four-way electromagnetic directional valve 3 flows back to fuel tank 16.Now whole hydraulic system does not produce pressure.The cavity of resorption of accumulator 8 is in pressure release shape
State, is inflated due to the epicoele of accumulator 8 and is less than 1MPa, the oil pressure intracavitary no pressure of accumulator 8, and (P0 ＞ P1) (P1 is the cavity of resorption of accumulator 8
Pressure) air bag by accumulator 8 fluid discharge.
(2) backhaul：Control electromagnetic relief valve I 4 YV1 obtains electric, and the YV3 of three-position four-way valve 3 obtains electric, electromagnetic relief valve II
10 YV4 obtains electric, and the pressure oil that oil pump 2 is exported is directly entered hydraulic pressure through three-position four-way valve 3, stacking type hydraulic control check valve 6 respectively
The cavity of resorption of cylinder 9, the fluid that oil pump 2 is discharged promotes piston stroking upward, because the B chambers of stacking type hydraulic control check valve 6 are check valve, two oil
The fluid of cylinder epicoele can not return to fuel tank 16 from three position four-way directional control valve 3, because the second control oil pipe 701 is connected in hydraulic cylinder 9
On cavity of resorption pipeline, now hydraulic control one-way valve 7 is opened in the presence of pressure oil by the second control oil pipe 701, two hydraulic cylinders 9
The fluid of epicoele makes P1 cavity pressures be more than 1MPa (P1 ＞ P0), fluid is expressed to storage in the presence of the promotion of the piston of hydraulic cylinder 9
The topping up of accumulator 8 can be given in device 8, be that action lower soon next time is prepared.
Because cylinder diameter is more than bar footpath, the area of the epicoele of hydraulic cylinder 9 can be more than the several times of 9 times anchor ring products of hydraulic cylinder, general small
In ten times, reverberation matrix method will overcome deadweight and the frictional resistance of sliding block, also compress the air bag of accumulator 8, general return pressure
For 12MPa or so, pressure can be set by Superimposed relief valve 5, prevent 9 times cavity pressures of hydraulic cylinder from too high, play protection
Effect.The no pressure oil of the first control oil pipe 601 being connected due to the hydraulic control one-way valve with stacking type hydraulic control check valve 6A intracavitary
By so as to effectively that the fluid of the cavity of resorption of hydraulic cylinder 9 is locked, being made with the pressure that the deadweight of non-slipping block is downward with accumulator 8
Sliding block falls knife.
(3) under fast：The YV2 of control three-position four-way valve 3 obtains electric, electromagnetic relief valve I 4 YV1 and electromagnetic relief valve II 10
YV4 obtain electric, now oil pump 2 export fluid be directly entered hydraulic cylinder 9 through three-position four-way valve 3 and stacking type hydraulic control check valve 6
Epicoele, there is the pressure of accumulator 8 to be influenceed by hydraulic cylinder epicoele, the first control oil pipe 601 simultaneously opens A chambers completely, hydraulic pressure
The A chambers and three-position four-way valve 3 that the fluid of the cavity of resorption of cylinder 9 discharges the stacking type hydraulic control check valve 6 after opening return to fuel tank 16.Now
The fluid that oil pump 2 and accumulator 8 are discharged, which merges, promotes descent of piston, adds the deadweight of sliding block, what time height is reached with reference to more than
Speed stablizes descending speed, and the epicoele of hydraulic cylinder 9 is high-speed downstream under band pressure condition all the time, is showed in the absence of having negative pressure or being emptied
As.
(4) work is entered：After going at high speeds, by the YV4 mistakes of speed change point and electric control, now electromagnetic relief valve II 10
Electricity 1 second, remaining fluid moment flows back to fuel tank 16 by electromagnetic relief valve II 10 in accumulator 8, now the epicoele of hydraulic cylinder 9
Hydraulic oil does not have back pressure, is not turned on pressure to open stacking type hydraulic control check valve 6 completely, and the fluid of the cavity of resorption of hydraulic cylinder 9 is from folded
Plus formula hydraulic control one-way valve 6 slowly passes through, the fluid that now oil pump 2 is exported is through three-position four-way electromagnetic directional valve 3 and superposing type liquid
Control check valve 6 is directly entered the epicoele of hydraulic cylinder 9, and the piston of hydraulic cylinder 9 is realized under the thrust for the hydraulic oil that oil pump 2 is discharged
Work enters descending, and hydraulic control one-way valve 7 is closed automatically by the presence of spring force.It will can be pressed by above-mentioned electromagnetic relief valve II 10
Power is turned down so that the pressure repairing of accumulator 8 pressure is not more than 1MPa, so as to ensure that work enters the stability in stage, and then makes plate
Bending quality be guaranteed.
(5) pressurize：The YV2 of control three-position four-way electromagnetic directional valve 3 obtains electric, electromagnetic relief valve I 4 YV1 and electromagnetism overflow
Valve II 10 YV4 obtains electric, and the fluid that oil pump 2 is exported is direct through three-position four-way electromagnetic directional valve 3 and stacking type hydraulic control check valve 6
Into the epicoele of hydraulic cylinder 9, now the fluid of the cavity of resorption of hydraulic cylinder 9 passes through stacking type hydraulic control check valve 6 and the oil return of three-position four-way valve 3
Case 16, cavity of resorption no pressure control oil can not also open hydraulic control one-way valve 7, and the oil that oil pump 2 is exported is to be locked in progress in cylinder upper cavity oil
Pressurize, the dwell time is longer and stably, overcomes existing bender hydraulic system and is generally difficult to really realize hydraulic cylinder epicoele
Pressurize usually requires that by replenishing valve progress continuous pressure the unstable deficiency of pressure, waste of resource, and pressurize could be kept.
(6) pressure release：The YV2 of control three-position four-way valve 3 obtains electric, electromagnetic relief valve II 10 YV4 and Solenoid ball valve 11
YV5 obtains electric, and the fluid that now oil pump 2 is exported is through the oil return boxes 16 of electromagnetic relief valve I 4, because electromagnetic relief valve II 10 YV4 is obtained
Electricity, the fluid that the epicoele abrupt release of hydraulic cylinder 9 comes out enters 8 times intracavitary of accumulator through Solenoid ball valve 11, due to accumulator 8P0
Chamber is filled with nitrogen, and P1 chambers are compressional to produce certain pressure and elastic force, so as to effectively reduce because of cylinder upper cavity oil moment
The fluid discharged and the impulsive sound produced.
(7) stop：Control electromagnetic relief valve II 10 YV4 obtains electric, and now hydraulic system does not set up pressure, but electromagnetism
Overflow valve II 10 YV4 must be kept as electricity, it is ensured that the fluid of hydraulic cylinder epicoele is supplemented to accumulator during sliding block backhaul, so that
Epicoele is set to have pressure to realize high-speed downstream at any time.
(8) shut down：The motor 1 of oil pump 2 is stopped, and now all electromagnetism dead electricity, the fluid of the cavity of resorption of accumulator 8 is complete
Portion is discharged, and hydraulic cylinder epicoele does not have pressure.
Embodiment 3
A kind of bender of efficient stable operation of the present embodiment, the bender includes the hydraulic system described in embodiment 2,
So as to so that each process of Bending Processing, it is such as fast under, work enter, pressurize can meet its it is respective it is different require, realize
At a high speed, stablize descending, stable work is entered, dwell time length and relatively stablize, so as to ensure that the precision of whole Bending Processing, stability
With bending efficiency and the crudy of sheet material, the demand of modern production can be met.
Air in usual bending sump 16 can move up and down a large amount of from the air on fuel tank 16 with the high speed of sliding block
Cleaner 12 is passed in and out, and the air output in the system fuel tank 16 is less than original 10%, the inner fluid level fluctuation of fuel tank 16
It is smaller, so as to greatly reduce the pollution of fluid, it is ensured that the stability of bender work.Each dynamic action request can pass through above
Electrical equipment fluid,matching pressure is realized, separately by function push switch, and crawl, single, circulatory function may be selected.
Claims (10)
1. a kind of bending method of efficient bender, it is characterised in that its step is：
(1) start shooting：Motor (1) is started, electromagnetic relief valve II (10) YV4 dead electricity is controlled, the fluid of oil pump (2) discharge is through electricity
Magnetic overflow valve I (4) flows back to fuel tank (16) with three-position four-way electromagnetic directional valve (3)；Now whole hydraulic system does not produce pressure, storage
Energy device (8) cavity of resorption is inflated due to accumulator (8) epicoele in pressure release state and is less than 1MPa, accumulator (8) oil pressure intracavitary no pressure,
Air bag discharges the fluid in accumulator (8)；
(2) backhaul：Control electromagnetic relief valve I (4) YV1 obtains electric, and the YV3 of three-position four-way electromagnetic directional valve (3) obtains electric, and electromagnetism overflows
Stream valve II (10) YV4 obtains electric, and the pressure oil of oil pump (2) output is respectively through three-position four-way electromagnetic directional valve (3), stacking type hydraulic control
Check valve (6) is directly entered the cavity of resorption of hydraulic cylinder (9), so as to promote piston stroking upward；Now existed by the second control oil pipe (701)
Hydraulic control one-way valve (7) is opened in the presence of pressure oil, what the fluid of two hydraulic cylinders (9) epicoele was promoted in hydraulic cylinder (9) piston
Under effect, fluid is expressed in accumulator (8), accumulator (8) topping up is given, be that action lower soon next time is prepared；
(3) under fast：The YV2 of control three-position four-way electromagnetic directional valve (3) obtains electric, electromagnetic relief valve I (4) YV1 and electromagnetism overflow
Valve II (10) YV4 obtains electric, and the fluid of now oil pump (2) output is through three-position four-way electromagnetic directional valve (3) and stacking type hydraulic control list
The epicoele of hydraulic cylinder (9) is directly entered to valve (6), is had accumulator (8) pressure to be influenceed by hydraulic cylinder epicoele, the first control oil pipe
(601) while stacking type hydraulic control check valve (6) is opened completely, the fluid of hydraulic cylinder (9) cavity of resorption discharges the superposition after opening
Formula hydraulic control one-way valve (6) and three-position four-way electromagnetic directional valve (3) return to fuel tank (16)；Now oil pump (2) and accumulator (8) are arranged
The fluid gone out, which merges, promotes descent of piston, the deadweight of sliding block is added, so as to drive the high-speed downstream of upper die of bending machine；
(4) work is entered：After high-speed downstream, by speed change point and electric control, make electromagnetic relief valve II (10) YV4 dead electricity 1 second, store up
Remaining fluid moment flows back to fuel tank (16) by electromagnetic relief valve II (10) in energy device (8), now the liquid of hydraulic cylinder (9) epicoele
Press oil no back pressure, be not turned on pressure to open stacking type hydraulic control check valve (6) completely, the fluid of hydraulic cylinder (9) cavity of resorption from
Stacking type hydraulic control check valve (6) passes through, and the fluid of oil pump (2) output is through three-position four-way electromagnetic directional valve (3) and stacking type hydraulic control
Check valve (6) is directly entered the epicoele of hydraulic cylinder (9), the thrust for the hydraulic oil that the piston of hydraulic cylinder (9) is discharged in oil pump (2)
Under, realize that work enters descending, hydraulic control one-way valve (7) is closed automatically by the presence of spring force；
(5) pressurize：The YV2 of control three-position four-way electromagnetic directional valve (3) obtains electric, electromagnetic relief valve I (4) YV1 and electromagnetism overflow
Valve II (10) YV4 obtains electric, and the fluid of oil pump (2) output is through three-position four-way electromagnetic directional valve (3) and stacking type hydraulic control check valve
(6) epicoele of hydraulic cylinder (9) is directly entered, now the fluid of hydraulic cylinder (9) cavity of resorption passes through stacking type hydraulic control check valve (6) and three
Position four-way electromagnetic reversing valve (3) oil return box (16), cavity of resorption no pressure control oil can not also open hydraulic control one-way valve (7), oil pump (2)
The oil of output is to be locked in cylinder upper cavity oil to carry out pressurize；
(6) pressure release：The YV2 of control three-position four-way electromagnetic directional valve (3) obtains electric, electromagnetic relief valve II (10) YV4 and electromagnetic ball
The YV5 of valve (11) obtains electric, and the fluid of oil pump (2) output is through electromagnetic relief valve I (4) oil return box (16), because of electromagnetic relief valve II
(10) YV4 obtains electric, and the fluid that hydraulic cylinder (9) epicoele abrupt release comes out is entered under accumulator (8) through Solenoid ball valve (11)
Intracavitary；
(7) stop：Control electromagnetic relief valve II (10) YV4 obtains electric, and now hydraulic system does not set up pressure, keeps electromagnetism to overflow
Stream valve II (10) YV4 obtains electric, it is ensured that the fluid of hydraulic cylinder (9) epicoele is supplemented to accumulator (8) during sliding block backhaul, so that on
Chamber has pressure to realize high-speed downstream at any time；
(8) shut down：The motor (1) of control oil pump (2) is stopped, now all electromagnetism dead electricity, accumulator (8) cavity of resorption
Fluid is all discharged, and hydraulic cylinder epicoele does not have pressure.
2. a kind of bending method of efficient bender according to claim 1, it is characterised in that：Described oil pump (2) with
Motor (1) is connected, and the oil inlet of oil pump (2) is connected with fuel tank (16), and the oil-out of oil pump (2) passes through pipeline and three four
The P mouths of electric change valve (3) are connected；The T mouths of the three-position four-way electromagnetic directional valve (3) pass through pipeline and fuel tank (16) phase
Even, the A mouths of the three-position four-way electromagnetic directional valve (3) are connected to the cavity of resorption of hydraulic cylinder (9), 3-position 4-way electricity by being superimposed valve group
The B mouths of magnetic reversal valve (3) are connected to the epicoele of hydraulic cylinder (9) by being superimposed valve group, and the epicoele of the hydraulic cylinder (9) passes through hydraulic control
Check valve (7) is connected with accumulator (8).
3. a kind of bending method of efficient bender according to claim 2, it is characterised in that：Described superposition valve group bag
Stacking type hydraulic control check valve (6) and Superimposed relief valve (5) are included, wherein stacking type hydraulic control check valve (6) includes A chambers and B chambers, and
The A mouths of three-position four-way electromagnetic directional valve (3) are connected with the A chambers of stacking type hydraulic control check valve (6), three-position four-way electromagnetic directional valve
(3) B mouths are connected with the B chambers of stacking type hydraulic control check valve (6).
4. a kind of bending method of efficient bender according to claim 3, it is characterised in that：The stacking type hydraulic control list
It is hydraulic control one-way valve to the A chambers of valve (6), its B chamber is common check valve.
5. a kind of bending method of efficient bender according to claim 4, it is characterised in that：The stacking type hydraulic control list
It is connected to the A chambers of valve (6) by the first control oil pipe (601) with the B mouths of three-position four-way electromagnetic directional valve (3).
6. a kind of bending method of efficient bender according to any one of claim 2-5, it is characterised in that：Described
It is superimposed between valve group and three-position four-way electromagnetic directional valve (3) and is provided with transition block (17), described hydraulic control one-way valve (7) passes through second
Control oil pipe (701) is connected to transition block (17).
7. a kind of bending method of efficient bender according to any one of claim 1-5, it is characterised in that：Described
Electromagnetic relief valve II (10) is located at the oil port of accumulator (8), and electromagnetic relief valve II (10) passes through pipeline and fuel tank (16)
It is connected.
8. a kind of bending method of efficient bender according to claim 7, it is characterised in that：Described Solenoid ball valve
(11) oil port of accumulator (8) is installed on, the Solenoid ball valve (11) is on the one hand connected with hydraulic cylinder (9) epicoele, on the other hand
It is connected by electromagnetic relief valve II (10) with fuel tank (16).
9. a kind of bending method of efficient bender according to claim 8, it is characterised in that：Oil pump (2) go out
Hydraulic fluid port is also connected by electromagnetic relief valve I (4) with fuel tank (16).
10. a kind of bending method of efficient bender according to claim 9, it is characterised in that：Oil pump (2) go out
Electromagnetic relay (15) is connected with oil pipe, and the oil-out of oil pump (2) also passes through pipeline and pressure meter switch (13) and pressure
Table (14) is connected.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610497431.2A CN105909575B (en) | 2016-06-28 | 2016-06-28 | A kind of bending method of efficient bender |
| PCT/CN2017/097452 WO2018001388A1 (en) | 2016-06-28 | 2017-08-15 | High-efficiency bending machine bending method |
| MYPI2017001625A MY187715A (en) | 2016-06-28 | 2017-08-15 | Bending method of efficient bending machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610497431.2A CN105909575B (en) | 2016-06-28 | 2016-06-28 | A kind of bending method of efficient bender |
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| CN (1) | CN105909575B (en) |
| MY (1) | MY187715A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928042A (en) * | 2020-08-18 | 2020-11-13 | 安徽鲲鹏装备模具制造有限公司 | Automatic pressure relief system convenient for quick connector to be plugged |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909575B (en) * | 2016-06-28 | 2017-10-31 | 安徽东海机床制造有限公司 | A kind of bending method of efficient bender |
| CN108687283B (en) * | 2018-03-30 | 2024-04-12 | 天津市天锻压力机有限公司 | Electrohydraulic control system of hot extrusion forming hydraulic machine and process forming method |
| CN108672667A (en) * | 2018-07-24 | 2018-10-19 | 中国重型机械研究院股份公司 | Low-power consumption hydraulic position holding system and control method with on-line proving function |
| CN109027221B (en) * | 2018-10-25 | 2023-06-02 | 湘潭大学 | Double clutch hydraulic control system for small vehicle |
| CN109834966B (en) * | 2019-04-08 | 2023-12-22 | 江苏扬力液压装备有限公司 | Servo pump control hydraulic fine blanking machine and hydraulic machining method thereof |
| CN113027841A (en) * | 2019-12-24 | 2021-06-25 | 登派液压技术（上海）有限公司 | Integrated bidirectional pump-controlled high-speed double-cylinder synchronous hydraulic control system |
| CN111438983A (en) * | 2020-04-02 | 2020-07-24 | 长沙中金智能装备有限公司 | Hydraulic system for pushing head of steel scrap packing machine and steel scrap packing machine |
| CN112833068B (en) * | 2020-12-16 | 2023-07-28 | 中国南方电网有限责任公司超高压输电公司曲靖局 | Integrated movable oil filtering and injecting equipment for hydraulic mechanism |
| CN112828087B (en) * | 2020-12-30 | 2023-05-12 | 深圳市宏达鑫精密模具制品有限公司 | Hardware processing equipment |
| CN112943747A (en) * | 2021-03-02 | 2021-06-11 | 中冶宝钢技术服务有限公司 | Method for replacing oil of hydraulic system of clamp hoisting equipment |
| CN113565820A (en) * | 2021-08-11 | 2021-10-29 | 浙江旭昌昇装备科技有限公司 | Injection molding machine mould neutron pressurize pressure release oil piping system |
| CN114001069B (en) * | 2021-11-12 | 2024-06-04 | 中天钢铁集团有限公司 | Hydraulic system of straightener and operation method thereof |
| CN116892544A (en) * | 2023-07-20 | 2023-10-17 | 东方空间技术(山东)有限公司 | Rocket launching pad hydraulic control system |
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| JP3112300B2 (en) * | 1991-03-29 | 2000-11-27 | 株式会社アマダ | Plate processing machine |
| DE10151810A1 (en) * | 2001-10-20 | 2003-05-08 | Hydac Internat Gmbh | Control unit for a fluid drive used with a hydraulic deformation or forming machine has, low and high range pressure supply units, which are used by the control unit to control the pressure output that regulates the fluid drive |
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| ITMI20111408A1 (en) * | 2011-07-27 | 2013-01-28 | Promau Srl | APPARATUS AND METHOD FOR THE ELECTRO-HYDRAULIC CONTROL OF PARALLELISM IN A CALENDER FOR METAL MANUFACTURING |
| CN202360494U (en) * | 2011-12-03 | 2012-08-01 | 南京埃尔法电液技术有限公司 | Bending machine hydraulic system |
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| CN204175686U (en) * | 2014-10-30 | 2015-02-25 | 安徽五洋机床制造有限公司 | A kind of bender hydraulic system |
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| CN105909575B (en) * | 2016-06-28 | 2017-10-31 | 安徽东海机床制造有限公司 | A kind of bending method of efficient bender |
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2016
- 2016-06-28 CN CN201610497431.2A patent/CN105909575B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111928042A (en) * | 2020-08-18 | 2020-11-13 | 安徽鲲鹏装备模具制造有限公司 | Automatic pressure relief system convenient for quick connector to be plugged |
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| CN105909575A (en) | 2016-08-31 |
| MY187715A (en) | 2021-10-13 |
| WO2018001388A1 (en) | 2018-01-04 |
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