CN109014364A - A kind of hydraulic control shear technique of plate shearing machine - Google Patents
A kind of hydraulic control shear technique of plate shearing machine Download PDFInfo
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- CN109014364A CN109014364A CN201811146846.0A CN201811146846A CN109014364A CN 109014364 A CN109014364 A CN 109014364A CN 201811146846 A CN201811146846 A CN 201811146846A CN 109014364 A CN109014364 A CN 109014364A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
- B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
- B23D15/14—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure
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Abstract
The invention discloses a kind of hydraulic control shear techniques of plate shearing machine, belong to forging machine tool technical field.Hydraulic system of cutting machine of the invention, the oil outlet of the oil outlet of its first oil pump and the second oil pump passes through pipeline respectively and is connected with the P of the first electro-hydraulic reversing valve mouth, P mouth, the cavity of resorption of shear cylinder, the cavity of resorption of binder cylinder and the first accumulator of the second electro-hydraulic reversing valve and the second accumulator, the A mouth of first electro-hydraulic reversing valve is connected by the first hydraulic control one-way valve with the epicoele of shear cylinder, and B mouthfuls are directly connected by pipeline with the epicoele of shear cylinder；The A mouth of second electro-hydraulic reversing valve is connected by the second hydraulic control one-way valve with the epicoele of binder cylinder, and B mouthfuls are directly connected by pipeline with the epicoele of binder cylinder.The present invention is optimized by the hydraulic system to plate shearing machine, so as to effectively improve the processing efficiency of plate shearing machine, and is effectively mitigated vibration and the protection blade of lathe, is conducive to extend the service life of blade.
Description
Technical field
The invention belongs to hydraulic system technical fields, more specifically to a kind of hydraulic control shear work of plate shearing machine
Skill.
Background technique
Plate shearing machine (English name: plate shears；Guillotine shear) belong to one of metal forming machinery, be
It is done reciprocating linear motion with relatively another blade of a blade and shears the machine of plate.Plate shearing machine by means of movement cutter and
Fixed bottom knife is applied shearing force to the sheet metal of various thickness, is made plate by required using reasonable gap blade
Size fracture separation.Currently, plate shearing machine product is widely used in aviation, light industry, metallurgy, chemical industry, building, ship, automobile, electricity
The industries such as power, electric appliance, decoration provide required special-purpose machinery and complete set of equipments.
Plate shearing machine is divided into mechanical plate shearing machine and fluid pressure type plate shearing machine, and wherein hydraulic plate shears uses hydraulic drive, makes machine
Device is steady when working, and noise is small, securely and reliably, can carry out single continuous shear stress, shear thickness relative to machine driving also compared with
Thickness, therefore, hydraulic plate shears are mainly used for the THE ADIABATIC SHEAR IN of big specification shear.Wherein, hydraulic system is the important dynamic of plate shearing machine
Force system, the difference of structure are directly related to the shear structure of plate shearing machine, complexity, stability and its system of hydraulic system
Temperature directly influences operation and the working efficiency of plate shearing machine.
Through retrieving, has more disclosure about the improved patent of hydraulic system of cutting machine at present.Such as, Chinese Patent Application No.
A kind of hydraulic system of cutting machine, the hydraulic system oil pump oil outlet of this application are disclosed for 201721794909.4 application case
The upper oil cavitie of binder oil cylinder is connected by oil pipe all the way；Oil pump out of the mouth another way by oil pipe connect direction valve inserted valve into
Hydraulic fluid port, direction valve inserted valve oil outlet connect left oil cylinder upper oil cavitie by oil pipe, and left oil cylinder lower oil cavitie connects right oil by oil pipe
Cylinder upper oil cavitie, right oil cylinder lower oil cavitie connect the oil outlet of oil pump by oil pipe；Between right oil cylinder lower oil cavitie and oil pump out of the mouth
Oil pipe is equipped with the accumulator of accumulation of energy, and the control mouth of direction valve inserted valve is connect by second liang of position four-way solenoid valve with fuel tank；It cuts
Trigger hydraulic system further includes overflow valve inserted valve.This application improves steel plate by the improvement to hydraulic system of cutting machine
Surface quality after shearing, the dent and deformation, shear precision being visible by naked eyes when shearing thick steel plate also correspondingly increase.
For another example, the application case that Chinese Patent Application No. is 201410415397.0 discloses a kind of hydraulic system of cutting machine,
The hydraulic system of cutting machine of this application, including hydraulic pressure pump group, system pressure control block, binder cylinder control valve block, several binders
Cylinder, main hydraulic cylinder control valve block and a pair of of main hydraulic cylinder, the output end of hydraulic pressure pump group respectively with system pressure control block, binder cylinder
Control valve block input terminal, main hydraulic cylinder control valve block input terminal are connected, and system pressure control block output end leads to fuel tank, binder cylinder control
Valve block output end processed is connected with several binder cylinder back cavities respectively, and main hydraulic cylinder controls valve block output end and a pair of of main hydraulic cylinder back cavity
It is connected, a pair of of main hydraulic cylinder piston rod end is connected with knife rest upside respectively.In this application in the continuous increase of shearing force,
Several binder cylinders are in state of pressure keeping；Binder cylinder oil pressure in state of pressure keeping no longer increases, and pressure-plate-force no longer increases, and is cut
Panel surface can or can not generate impression, improve by the surface quality of shear material.
But when controlling the movement of shear cylinder and binder cylinder by same set of hydraulic system of cutting machine in the prior art, usually
It can only realize single knife rest shearing backhaul action, binder cylinder and shearing oil cylinder backhaul together, machine tool action performance is relatively poor,
Processing efficiency is low.Meanwhile when passing through the downward movement of HYDRAULIC CONTROL SYSTEM shear cylinder in the prior art, cutter reaches workpiece fastly
Shi Sudu is still very fast, and the percussion generated to plate shearing machine and blade is larger, to influence the use longevity of plate shearing machine and blade
Life.
Summary of the invention
1. technical problems to be solved by the inivention
It is above insufficient existing for existing hydraulic system of cutting machine it is an object of the invention to overcome, provide a kind of plate shearing machine
Hydraulic control shear technique.The present invention is optimized by the hydraulic system to plate shearing machine, so as to effectively improve
The processing efficiency of plate shearing machine, and effectively mitigate vibration and the protection blade of lathe, it is conducive to extend the service life of blade.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
A kind of hydraulic control shear technique of plate shearing machine of the invention, starts above-mentioned hydraulic system, and shear technique includes
Following process:
(1) under binder cylinder:
Start two dynamo oil pump packages, YV1, YV2, YV6 electric, the first electromagnetic relief valve, the second electromagnetism overflow at this time
Valve plays common overflow valve action, and oil circuit, the oil that the first oil pump and the second oil pump are confessed are accessed in the right position of the second electro-hydraulic reversing valve
Liquid enters the epicoele of binder cylinder through the first straight check valve, the second straight check valve, the second electro-hydraulic reversing valve, pushes binder cylinder living
Fast downlink is filled in, binder cylinder epicoele can generate certain vacuum during fast downlink, act through second due to atmospheric pressure
Hydraulic control one-way valve supplements oil liquid from fuel tank, and the oil liquid of binder cylinder cavity of resorption is directly entered the elastic potential in the first accumulator as backhaul
It can storage；
(2) under shear cylinder is fast:
After the pressure of binder cylinder, pressure continues to increase, when reaching the setting pressure of pressure switch, in pressure switch
Microswitch connect electrical system, electrical system movement, YV1, YV2, YV6 and YV4 it is electric, the right position of the first electro-hydraulic reversing valve connects
Enter oil circuit, the oil liquid that the first oil pump and the second oil pump are confessed enters shear cylinder through the first straight check valve, the first electro-hydraulic reversing valve
Epicoele, push piston fast downlink, cylinder upper cavity oil can generate certain vacuum during fast downlink, due to the work of atmospheric pressure
It is supplemented with by the first hydraulic control one-way valve from fuel tank, the oil liquid of shear cylinder cavity of resorption is directly entered in the second accumulator as backhaul
Elastic potential energy storage；
(3) under shear cylinder is slow:
During under fast, when reaching speed change point, contact SQ2 gives electrical system signal, and electrical system acts, YV1, YV6,
YV4 obtains electric, YV2 power loss, and the remote control mouth of the first electromagnetic relief valve accesses fuel tank at this time, plays off-load valve action, the second electromagnetism overflow
Valve still plays common overflow valve action, guarantees the stabilization of system pressure, and the oil liquid that the first oil pump is confessed all overflows through the first electromagnetism
It flows valve and returns to fuel tank, the oil liquid that the second oil pump is confessed enters the upper of shear cylinder through the second straight check valve, the first electro-hydraulic reversing valve
Chamber pushes piston downlink, is equivalent to only the second oil pump feed at this time, downlink shear velocity is slack-off；
(4) pressure release:
When shear cylinder comes downwards to lower dead point position, bottom dead centre contact SQ3 gives electrical system signal, and electrical system is dynamic at this time
Make, solenoid valve whole power loss, all straight-through fuel tank of the remote control mouth of two electromagnetic relief valves, two oil pumps unload simultaneously, due to two
The Median Function feature of electro-hydraulic reversing valve, shear cylinder and binder cylinder are all in state of pressure keeping, pressure release dwell time in the process
By electrical system control；
(5) shear cylinder backhaul:
After the pressure release dwell time, give electrical system corresponding signal, electrical system movement, YV1, YV2, YV3 obtain it is electric,
Two electromagnetic relief valves play common overflow valve action, and oil circuit is accessed in the left position of the first electro-hydraulic reversing valve, what two oil pumps were confessed
Oil liquid enters the first hydraulic control one-way valve control mouth through the first straight check valve, the first electro-hydraulic reversing valve, opens the first fluid-control one-way
Valve, meanwhile, the potential energy previously stored in the second accumulator overcomes knife rest gravity that oil liquid is pressed into shear cylinder cavity of resorption, pushes piston
Uplink, the first hydraulic control one-way valve is in the open state at this time, and the oil liquid of epicoele is changed by the first hydraulic control one-way valve and first are electro-hydraulic
Fuel tank is returned to two oil circuits of valve, achievees the purpose that quick return；
(6) binder cylinder backhaul:
It is micro- in pressure switch when the pressure that pressure rise to pressure switch is set in shear cylinder return stroke
Dynamic switch connection electrical system, electrical system movement, YV1, YV3 power loss, YV5 obtain electric, compare, press with shearing oil cylinder backhaul action
Flow needed for material cylinder backhaul is small, it is only necessary to open a hydraulic control one-way valve, therefore the remote control mouth of the second electromagnetic relief valve connects
Enter fuel tank, is used as unloading valve, the unloading of the second oil pump, oil circuit, the oil liquid that the first oil pump is confessed are accessed in the second electro-hydraulic reversing valve left position
The control mouth for entering the second hydraulic control one-way valve through the first straight check valve, the second straight check valve, the second electro-hydraulic reversing valve, is opened
Second hydraulic control one-way valve, while the potential energy previously stored in the first accumulator overcomes in piston weight indentation binder cylinder cavity of resorption, pushes away
Piston uplink, the second hydraulic control one-way valve is in the open state at this time, and the oil liquid of binder cylinder epicoele passes through the second hydraulic control one-way valve
Fuel tank is returned with two oil circuits of the second electro-hydraulic reversing valve, achievees the purpose that quick return；
(7) filling liquid:
When filling liquid, filling liquid button is pressed, electrical system acts at this time, and YV2, YV4, YV6 obtain electric, the first electromagnetism overflow at this time
Valve plays common overflow valve action, and the first oil pump gives system filling liquid, and the remote control mouth of the second electromagnetic relief valve accesses fuel tank, makees unloading valve
With oil circuit is accessed in the second oil pump unloading, the right position of two electro-hydraulic reversing valves, opens two high-pressure ball valves, the first oil pump at this time
The oil liquid confessed enters the epicoele of shear cylinder and the epicoele of binder cylinder through two straight check valves and two electro-hydraulic reversing valves respectively,
Two high-pressure ball valves are opened at this time, and the oil liquid that the first oil pump is confessed enters the first accumulation of energy through the first straight check valve, high-pressure ball valve
The cavity of resorption of device, the second accumulator and shear cylinder, binder cylinder, oil liquid return to fuel tank by the first electromagnetic relief valve, at this time entire oil
Road stroke difference structure, shear cylinder go downwards to rapidly bottom, complete filling liquid.
Further, the oil outlet of first oil pump and the oil outlet of the second oil pump pass through pipeline and the first electricity respectively
P mouth, the cavity of resorption of shear cylinder, the cavity of resorption of binder cylinder and the first accumulator and second of the P mouth of liquid reversal valve, the second electro-hydraulic reversing valve
Accumulator is connected, and the A mouth of the first electro-hydraulic reversing valve is connected by the first hydraulic control one-way valve with the epicoele of shear cylinder, and B mouthfuls directly
It is connected by pipeline with the epicoele of shear cylinder；The A mouth of second electro-hydraulic reversing valve is upper by the second hydraulic control one-way valve and binder cylinder
Chamber is connected, and B mouthfuls are directly connected by pipeline with the epicoele of binder cylinder；First accumulator also with the cavity of resorption phase of binder cylinder
Even, the second accumulator is connected with the cavity of resorption of shear cylinder.
Further, the shear cylinder includes the first shear cylinder and the second shear cylinder, and the first shear cylinder and second is cut
The cavity of resorption for cutting cylinder is connected by pipeline.
Further, the binder cylinder includes the first binder cylinder and the second binder cylinder, and the first binder cylinder and second are pressed
The cavity of resorption of material cylinder is connected by pipeline.
Further, the T mouth of first hydraulic control one-way valve, the second hydraulic control one-way valve and the first electro-hydraulic reversing valve and
The T mouth of two electro-hydraulic reversing valves is connected with fuel tank.
Further, is respectively equipped on the oil outlet pipeline of first oil pump and the oil outlet pipeline of the second oil pump
One straight check valve, the second straight check valve.
Further, first oil pump and the second oil pump are connected from different motor drivens respectively, and the first oil pump
Using high-pressure pump, the second oil pump uses low-lift pump.
Further, high-pressure ball valve and pressure are equipped on the oil inlet pipe of first accumulator and the second accumulator
Meter.
Further, the oil outlet of first oil pump is connected by pipeline with the first electromagnetic relief valve, the second oil pump
Oil outlet be connected with the second electromagnetic relief valve by pipeline, the first electromagnetic relief valve, the second electromagnetic relief valve are open type
Electromagnetic relief valve, and it is remotely controlled the straight-through fuel tank of mouth.
Further, the oil outlet of first oil pump and the oil outlet of the second oil pump pass through pipeline and open with pressure gauge
It closes, vibration-proof pressure gauge and pressure switch are connected.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, there is following remarkable result:
(1) the hydraulic control shear technique of a kind of plate shearing machine of the invention, optimizes hydraulic system and shear technique
On the one hand design can be realized shear cylinder and while binder cylinder or sequencing by the cooperation of high-low pressure Oil pump electrical machinery group
On the other hand backhaul merges fuel feeding by double pump and carries out fast downlink to shear cylinder, then by YV2 power loss, carries out single oil pump feed
High pressure downlink is sheared at a slow speed, so as to the impact that effective protection plate shearing machine is generated by THE ADIABATIC SHEAR IN, is conducive to extend shearing
The service life of blade, while also improving the quality of shearing area.
(2) the hydraulic control shear technique of a kind of plate shearing machine of the invention, by the setting of different hydraulic control one-way valves come real
The oil return that separates of existing shear cylinder and binder cylinder, and logical oil mass is big, is advantageously implemented quick return；The present invention directly pass through one it is low
Press pump realizes the backhaul of binder cylinder, and since backhaul cylinder diameter is small, a pump return can satisfy the quick return of kicker cylinder, then by
It is small in return pressure, oil circuit impact can be reduced by low pressure oil pump feed.In addition, due to low-lift pump power of motor than high-pressure pump electricity
Machine power is small, drops bottom noise and energy consumption.
(3) the hydraulic control shear technique of a kind of plate shearing machine of the invention is usually by increasing by one in traditional technology
Pressure regulator valve sets supercharging pressure, and the present invention directly passes through a low pressure pump work and can realize oil-filled, has both reduced cost,
Energy consumption is reduced again.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the hydraulic system of plate shearing machine of the invention.
Label declaration in schematic diagram:
1-1, the first oil pump；1-2, the second oil pump；2, motor；3-1, the first electromagnetic relief valve；3-2, the second electromagnetism overflow
Valve；4-1, the first electro-hydraulic reversing valve；4-2, the second electro-hydraulic reversing valve；5, pressure meter switch；6, vibration-proof pressure gauge；7, smash
Valve；8-1, the first shear cylinder；8-2, the second shear cylinder；9-1, the first hydraulic control one-way valve；9-2, the second hydraulic control one-way valve；10-1,
First binder cylinder；10-2, the second binder cylinder；11, the first accumulator；12, the second accumulator；13, pressure switch；14-1,
One straight check valve；14-2, the second straight check valve；15, fuel tank.
Specific embodiment
To further appreciate that the contents of the present invention, now in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
For deficiency existing for existing hydraulic system of cutting machine, the present embodiment is optimized by the structure to hydraulic system
The drawbacks of designing, having abandoned previous traditional hydraulic system of cutting machine, realizes the single movement of binder cylinder.Utilize height pressure oil pump
The cooperation of motor group, and by electrical equipment control hydraulic valve, on the one hand can be realized shear cylinder with it is while binder cylinder or successive suitable
Sequence backhaul increases the action performance of lathe, greatly improves work efficiency；On the other hand fuel feeding is merged to shearing by double pump
Cylinder carries out fast downlink, then by YV2 power loss, carrying out single oil pump feed, high pressure downlink is sheared at a slow speed, that is, passes through two high-low pressures two
The reasonable switching of group Oil pump electrical machinery, realize shear cylinder it is fast under, under slow, in cutter fastly close to plate when, switch to it is slow under,
The vibration of fuselage is effectively reduced, the impact that enough effective protection plate shearing machines are generated by THE ADIABATIC SHEAR IN, due to leaning on close to the edge of a knife
Speed slows down when close, therefore effectively protects blade, is conducive to extend the service life of shear-blade, while also improving and cutting
The quality of section.
Specifically, as shown in Figure 1, a kind of hydraulic system of plate shearing machine of the present embodiment, including fuel tank 15, shear cylinder, pressure
Material cylinder, the first oil pump 1-1, the second oil pump 1-2, the first electro-hydraulic reversing valve 4-1, the second electro-hydraulic reversing valve 4-2, the first accumulator 11
With the second accumulator 12, wherein the oil outlet of the oil outlet of the first oil pump 1-1 and the second oil pump 1-2 pass through pipeline and first respectively
P mouth, the cavity of resorption of shear cylinder, the cavity of resorption of binder cylinder and the first accumulation of energy of the P mouth, the second electro-hydraulic reversing valve 4-2 of electro-hydraulic reversing valve 4-1
Device 11 is connected with the second accumulator 12, and the A mouth of the first electro-hydraulic reversing valve 4-1 passes through the first hydraulic control one-way valve 9-1 and shear cylinder
Epicoele is connected, and B mouthfuls are directly connected by pipeline with the epicoele of shear cylinder；The A mouth of second electro-hydraulic reversing valve 4-2 passes through the second liquid
Control check valve 9-2 is connected with the epicoele of binder cylinder, and B mouthfuls are directly connected by pipeline with the epicoele of binder cylinder；Described first stores
Can device 11 be also connected with the cavity of resorption of binder cylinder, the second accumulator 12 is connected with the cavity of resorption of shear cylinder, and the first accumulator 11 and the
High-pressure ball valve 7 and pressure gauge are equipped on the oil inlet pipe of two accumulators 12.The first hydraulic control one-way valve 9-1, the second hydraulic control
The T mouth of check valve 9-2 and the first electro-hydraulic reversing valve 4-1 and the T mouth of the second electro-hydraulic reversing valve 4-2 are connected with fuel tank.
It is straight that first is respectively equipped on the oil outlet pipeline of above-mentioned first oil pump 1-1 and the oil outlet pipeline of the second oil pump 1-2
Logical check valve 14-1, the second straight check valve 14-2, and the first oil pump 1-1 and the second oil pump 1-2 drive from different motors 2 respectively
Dynamic to be connected, wherein the first oil pump 1-1 uses high-pressure pump, the second oil pump 1-2 uses low-lift pump.The first oil pump 1-1's is fuel-displaced
Mouth is connected by pipeline with the first electromagnetic relief valve 3-1, and the oil outlet of the second oil pump 1-2 passes through pipeline and the second electromagnetic relief valve
3-2 is connected, and the first electromagnetic relief valve 3-1, the second electromagnetic relief valve 3-2 are open type electromagnetic relief valve, and its remote control mouth is equal
Straight-through fuel tank 15.The oil outlet of the oil outlet of the first oil pump 1-1 and the second oil pump 1-2 also pass through pipeline and pressure in the present embodiment
Power table switch 5, vibration-proof pressure gauge 6 and pressure switch 13 are connected.
The shear cylinder of the present embodiment includes the first shear cylinder 8-1 and the second shear cylinder 8-2, the first shear cylinder 8-1 and second
The cavity of resorption of shear cylinder 8-2 is connected by pipeline, on the one hand epicoele passes through B of the pipeline directly with the first electro-hydraulic reversing valve 4-1
Mouth is connected, and is on the other hand connected respectively by a first hydraulic control one-way valve 9-1 with the A mouth of the first electro-hydraulic reversing valve 4-1.This reality
The binder cylinder for applying example includes the first binder cylinder 10-1 and the second binder cylinder 10-2, the first binder cylinder 10-1 and the second binder cylinder 10-2
Cavity of resorption by pipeline be connected, epicoele is connected with the B mouth of the second hydraulic control one-way valve 9-2 and the second electro-hydraulic reversing valve 4-2.
Start above-mentioned hydraulic system, a kind of hydraulic control shear technique of plate shearing machine of the present embodiment, shear technique packet
Include following process:
(1) under binder cylinder:
Start two dynamo oil pump packages, YV1, YV2, YV6 it is electric, the first electromagnetic relief valve 3-1, the second electromagnetism overflow at this time
Stream valve 3-2 plays common overflow valve action, and oil circuit, the oil of the first oil pump 1-1 and second are accessed in the right position of the second electro-hydraulic reversing valve 4-2
The oil liquid that pump 1-2 is confessed enters through the first straight check valve 14-1, the second straight check valve 14-2, the second electro-hydraulic reversing valve 4-2
(oil liquid that the first oil pump 1-1 is confessed enters the epicoele of binder cylinder through the first straight check valve 14-1 and the second electro-hydraulic reversing valve 4-2
The epicoele of binder cylinder, the oil liquid that the second oil pump 1-2 is confessed enter through the second straight check valve 14-2 and the second electro-hydraulic reversing valve 4-2
The epicoele of binder cylinder), binder the cylinder piston fast downlink is pushed, binder cylinder epicoele can generate certain true during fast downlink
Sky, since the second hydraulic control one-way valve 9-2 that acts through of atmospheric pressure supplements oil liquid from fuel tank 15, the oil liquid of binder cylinder cavity of resorption is direct
It is stored into the first accumulator 11 as the elastic potential energy of backhaul；
(2) under shear cylinder is fast:
After the pressure of binder cylinder, pressure continues to increase, when reaching the setting pressure of pressure switch 13, pressure switch 13
In microswitch connect electrical system, electrical system movement, YV1, YV2, YV6 and YV4 electric, the first electro-hydraulic reversing valve 4-
Oil circuit is accessed in 1 right position, and the oil liquid that the first oil pump 1-1 and the second oil pump 1-2 are confessed is led directly to through the first straight check valve 14-1, second
Check valve 14-2, the first electro-hydraulic reversing valve 4-1 enter the epicoele of shear cylinder, and (oil liquid that the first oil pump 1-1 is confessed is straight-through through first
Check valve 14-1 and the first electro-hydraulic reversing valve 4-1 enters the epicoele of shear cylinder, and the oil liquid that the second oil pump 1-2 is confessed is straight-through through second
Check valve 14-2 and the first electro-hydraulic reversing valve 4-1 enters the epicoele of shear cylinder), push piston fast downlink, fast downlink process
Middle cylinder upper cavity oil can generate certain vacuum, since the first hydraulic control one-way valve 9-1 that acts through of atmospheric pressure is supplemented from fuel tank 15,
The oil liquid of shear cylinder cavity of resorption is directly entered in the second accumulator 12 and stores as the elastic potential energy of backhaul；
(3) under shear cylinder is slow:
During under fast, when reaching speed change point, contact SQ2 gives electrical system signal, and electrical system acts, YV1, YV6,
YV4 obtains electric, YV2 power loss, and the remote control mouth of the first electromagnetic relief valve 3-1 accesses fuel tank 15 at this time, plays off-load valve action, the second electromagnetism
Overflow valve 3-2 still plays common overflow valve action, guarantees the stabilization of system pressure, and the oil liquid that the first oil pump 1-1 is confessed all passes through
First electromagnetic relief valve 3-1 returns to fuel tank, and oil liquid that the second oil pump 1-2 is confessed is on the one hand through the second straight check valve 14-2, the
Two electro-hydraulic reversing valve 4-2 give binder cylinder persistent pressure, on the other hand through the second straight check valve 14-2, the first electro-hydraulic reversing valve 4-
1 enters the epicoele of shear cylinder, pushes piston downlink, is equivalent to only the second oil pump 1-2 fuel feeding at this time, and downlink shear velocity becomes
Slowly；
When traditional shear hydraulic system work, first idle running binder, rear idle running downlink, to when touching plate again to plate
It is sheared, shear velocity is the discharge capacity average rate binder and shearing by oil pump, and shear velocity is slow, it will affect working efficiency,
Shear velocity is too fast, also will affect the service life of knife-edge of plate shearing machine.This hydraulic system merges fuel feeding to shear cylinder by double pump
Fast downlink is carried out, then the high pressure downlink shearing at a slow speed of single oil pump feed is carried out by YV2 power loss, so as to effective protection plate shearing machine
The impact generated by THE ADIABATIC SHEAR IN, is conducive to extend the service life of shear-blade, while also improving the matter of shearing area
Amount.
(4) pressure release pressure maintaining:
When shear cylinder comes downwards to lower dead point position, bottom dead centre contact SQ3 gives electrical system signal, and electrical system is dynamic at this time
Make, solenoid valve whole power loss, all straight-through fuel tank of the remote control mouth of two electromagnetic relief valves, two oil pumps unload simultaneously, due to two
The Median Function feature of electro-hydraulic reversing valve, shear cylinder and binder cylinder are all in state of pressure keeping, pressure release dwell time in the process
By electrical system control；
(5) shear cylinder backhaul:
After the pressure release dwell time, give electrical system corresponding signal, electrical system movement, YV1, YV2, YV3 obtain it is electric,
Two electromagnetic relief valves play common overflow valve action, and oil circuit is accessed in the left position of the first electro-hydraulic reversing valve 4-1, and two oil pumps are confessed
Oil liquid through the first straight check valve 14-1, the second straight check valve 14-2, the first electro-hydraulic reversing valve 4-1 enter the first hydraulic control list
To valve 9-1 control mouth, the first hydraulic control one-way valve 9-1 is opened, meanwhile, the potential energy previously stored in the second accumulator 12 overcomes knife rest
Oil liquid is pressed into shear cylinder cavity of resorption by gravity, pushes piston stroking upward, and the first hydraulic control one-way valve 9-1 is in the open state at this time, on
The oil liquid of chamber returns to fuel tank by two oil circuits of the first hydraulic control one-way valve 9-1 and the first electro-hydraulic reversing valve 4-1, reaches quick return
Purpose；
(6) binder cylinder backhaul:
In shear cylinder return stroke, when the pressure that pressure rise to pressure switch 13 is set, in pressure switch
Microswitch connect electrical system, electrical system movement, YV1, YV3 power loss, YV5 obtain it is electric, with shearing oil cylinder backhaul action compare,
Flow needed for binder cylinder backhaul is small, it is only necessary to open a hydraulic control one-way valve, therefore the remote control of the second electromagnetic relief valve 3-2
Mouth access fuel tank is used as unloading valve, and the second oil pump 1-2 unloading, oil circuit, the first oil pump are accessed in the second left position electro-hydraulic reversing valve 4-2
The oil liquid that 1-1 is confessed enters the through the first straight check valve 14-1, the second straight check valve 14-2, the second electro-hydraulic reversing valve 4-2
The control mouth of two hydraulic control one-way valve 9-2 opens the second hydraulic control one-way valve 9-2, while the gesture previously stored in the first accumulator 11
It can overcome in piston weight indentation binder cylinder cavity of resorption, push piston stroking upward, the second hydraulic control one-way valve 9-2 is in open shape at this time
The oil liquid of state, binder cylinder epicoele returns to fuel tank by two oil circuits of the second hydraulic control one-way valve 9-2 and the second electro-hydraulic reversing valve 4-2,
Achieve the purpose that quick return；
Oil liquid when two group oil cylinder backhauls is after merging by valve group oil return box, but due to the backhaul simultaneously of two group oil cylinders
Flow is excessive, and fastly not so as to cause opening speed, the present embodiment realizes binder cylinder and shearing by multiple hydraulic control one-way valves
The separated oil return of cylinder, and logical oil mass is big, so as to realize quick return.The present embodiment realizes binder by a low-lift pump
The backhaul of cylinder, since backhaul cylinder diameter is small, a pump return can satisfy the quick return of kicker cylinder, then since return pressure is small,
Oil circuit impact can be reduced by low pressure oil pump feed.In addition, the power of motor due to low-lift pump is smaller than the power of motor of high-pressure pump, bottom drops
Noise and energy consumption.
(7) filling liquid:
When filling liquid, filling liquid button is pressed, electrical system acts at this time, and YV2, YV4, YV6 obtain electric, the first electromagnetism overflow at this time
Valve 3-1 plays common overflow valve action, and since the second straight check valve 14-2 plays lock oil circuit, the first oil pump 1-1 is filled to system
The remote control mouth of liquid, the second electromagnetic relief valve 3-2 accesses fuel tank, is used as unloading valve, the second oil pump 1-2 unloading, two electro-hydraulic commutations
Oil circuit is accessed in the right position of valve, opens two high-pressure ball valves 7 at this time, and the oil liquid that the first oil pump 1-1 is confessed is straight-through through two respectively
Check valve and two electro-hydraulic reversing valves enter the epicoele of shear cylinder and the epicoele of binder cylinder, open two high-pressure ball valves 7 at this time, the
The oil liquid that one oil pump 1-1 is confessed enters the first accumulator 11, the second accumulator through the first straight check valve 14-1, high-pressure ball valve 7
12 and shear cylinder, binder cylinder cavity of resorption, oil liquid returns to fuel tank, at this time entire oil circuit progressive error by the first electromagnetic relief valve 3-1
Dynamic structure, shear cylinder go downwards to rapidly bottom, complete filling liquid.The present embodiment is oil-filled to realize by a low pressure pump work, both subtracts
Lack cost, and reduces energy consumption.
Claims (10)
1. a kind of hydraulic control shear technique of plate shearing machine, which is characterized in that comprise the following processes:
(1) under binder cylinder:
Start two dynamo oil pump packages, YV1, YV2, YV6 electric, the first electromagnetic relief valve (3-1), the second electromagnetism overflow at this time
Valve (3-2) plays common overflow valve action, and oil circuit is accessed in the right position of the second electro-hydraulic reversing valve (4-2), the first oil pump (1-1) and the
The oil liquid that two oil pumps (1-2) are confessed is through the first straight check valve (14-1), the second straight check valve (14-2), the second electro-hydraulic commutation
Valve (4-2) enters the epicoele of binder cylinder, pushes binder the cylinder piston fast downlink, binder cylinder epicoele can generate during fast downlink
Certain vacuum acts through the second hydraulic control one-way valve (9-2) under fuel tank (15) supplement oil liquid, binder cylinder due to atmospheric pressure
The oil liquid of chamber is directly entered in the first accumulator (11) and stores as the elastic potential energy of backhaul；
(2) under shear cylinder is fast:
After the pressure of binder cylinder, pressure continues to increase, when reaching the setting pressure of pressure switch (13), pressure switch (13)
In microswitch connect electrical system, electrical system movement, YV1, YV2, YV6 and YV4 electric, the first electro-hydraulic reversing valve
Oil circuit is accessed in the right position (4-1), and the oil liquid that the first oil pump (1-1) and the second oil pump (1-2) are confessed is through the first straight check valve (14-
1), the first electro-hydraulic reversing valve (4-1) enters the epicoele of shear cylinder, piston fast downlink is pushed, during fast downlink on oil cylinder
Chamber can generate certain vacuum, since the first hydraulic control one-way valve (9-1) that acts through of atmospheric pressure is supplemented from fuel tank (15), shearing
The oil liquid of cylinder cavity of resorption is directly entered in the second accumulator (12) and stores as the elastic potential energy of backhaul；
(3) under shear cylinder is slow:
During under fast, when reaching speed change point, contact SQ2 gives electrical system signal, and electrical system movement, YV1, YV6, YV4 are obtained
Electricity, YV2 power loss, the remote control mouth of the first electromagnetic relief valve (3-1) accesses fuel tank (15) at this time, plays off-load valve action, the second electromagnetism
Overflow valve (3-2) still plays common overflow valve action, guarantees the stabilization of system pressure, and the oil liquid that the first oil pump (1-1) is confessed is complete
The first electromagnetic relief valve of portion (3-1) returns to fuel tank, and the oil liquid that the second oil pump (1-2) is confessed is through the second straight check valve (14-
2), the first electro-hydraulic reversing valve (4-1) enters the epicoele of shear cylinder, pushes piston downlink；
(4) pressure release (pressure maintaining):
When shear cylinder comes downwards to lower dead point position, bottom dead centre contact SQ3 gives electrical system signal, and electrical system acts at this time,
Solenoid valve whole power loss, all straight-through fuel tank of the remote control mouth of two electromagnetic relief valves, two oil pumps unload simultaneously, due to two it is electro-hydraulic
The Median Function feature of reversal valve, shear cylinder and binder cylinder are all in state of pressure keeping in the process, and the pressure release dwell time is by electricity
The control of gas system；
(5) shear cylinder backhaul:
After the pressure release dwell time, give electrical system corresponding signal, electrical system movement, YV1, YV2, YV3 obtain it is electric, two
Electromagnetic relief valve plays common overflow valve action, and oil circuit is accessed in the left position of the first electro-hydraulic reversing valve (4-1), what two oil pumps were confessed
Oil liquid enters the first hydraulic control one-way valve (9-1) control mouth through the first straight check valve (14-1), the first electro-hydraulic reversing valve (4-1),
It opens the first hydraulic control one-way valve (9-1), meanwhile, the potential energy previously stored in the second accumulator (12) overcomes knife rest gravity by oil liquid
It is pressed into shear cylinder cavity of resorption, pushes piston stroking upward, the first hydraulic control one-way valve (9-1) is in the open state at this time, the oil liquid of epicoele
Fuel tank is returned by two oil circuits of the first hydraulic control one-way valve (9-1) and the first electro-hydraulic reversing valve (4-1), reaches the mesh of quick return
's；
(6) binder cylinder backhaul:
It is micro- in pressure switch when the pressure of pressure rise to pressure switch (13) setting in shear cylinder return stroke
Dynamic switch connection electrical system, electrical system movement, YV1, YV3 power loss, YV5 obtain electric, the remote control of the second electromagnetic relief valve (3-2)
Mouth access fuel tank, is used as unloading valve, and the second oil pump (1-2) unloads, the second electro-hydraulic reversing valve left position (4-2) access oil circuit, and first
The oil liquid that oil pump (1-1) is confessed is through the first straight check valve (14-1), the second straight check valve (14-2), the second electro-hydraulic reversing valve
(4-2) enters the control mouth of the second hydraulic control one-way valve (9-2), opens the second hydraulic control one-way valve (9-2), while the first accumulator
(11) potential energy previously stored in overcomes in piston weight indentation binder cylinder cavity of resorption, pushes piston stroking upward, at this time the second hydraulic control list
In the open state to valve (9-2), the oil liquid of binder cylinder epicoele passes through the second hydraulic control one-way valve (9-2) and the second electro-hydraulic reversing valve
(4-2) two oil circuits return to fuel tank, achieve the purpose that quick return；
(7) filling liquid:
When filling liquid, filling liquid button is pressed, electrical system acts at this time, and YV2, YV4, YV6 obtain electric, the first electromagnetic relief valve at this time
(3-1) plays common overflow valve action, and the first oil pump (1-1) gives system filling liquid, and the remote control mouth of the second electromagnetic relief valve (3-2) accesses
Fuel tank, is used as unloading valve, the second oil pump (1-2) unloading, and the right position of two electro-hydraulic reversing valves accesses oil circuit, opens two at this time
High-pressure ball valve (7), the oil liquid that the first oil pump (1-1) is confessed enters through two straight check valves and two electro-hydraulic reversing valves respectively to be cut
The epicoele of cylinder and the epicoele of binder cylinder are cut, opens two high-pressure ball valves (7) at this time, the oil liquid that the first oil pump (1-1) is confessed is through the
One straight check valve (14-1), high-pressure ball valve (7) enter the first accumulator (11), the second accumulator (12) and shear cylinder, binder
The cavity of resorption of cylinder, oil liquid return to fuel tank by the first electromagnetic relief valve (3-1), at this time entire oil circuit stroke difference structure, shear cylinder
Bottom is gone downwards to rapidly, completes filling liquid.
2. a kind of hydraulic control shear technique of plate shearing machine according to claim 1, it is characterised in that: first oil pump
The oil outlet of the oil outlet of (1-1) and the second oil pump (1-2) passes through the P mouth of pipeline and the first electro-hydraulic reversing valve (4-1), respectively
P mouth, the cavity of resorption of shear cylinder, the cavity of resorption of binder cylinder and the first accumulator (11) of two electro-hydraulic reversing valves (4-2) and the second accumulator
(12) it is connected, the A mouth of the first electro-hydraulic reversing valve (4-1) is connected by the first hydraulic control one-way valve (9-1) with the epicoele of shear cylinder,
B mouthfuls are directly connected by pipeline with the epicoele of shear cylinder；The A mouth of second electro-hydraulic reversing valve (4-2) passes through the second hydraulic control one-way valve
(9-2) is connected with the epicoele of binder cylinder, and B mouthfuls are directly connected by pipeline with the epicoele of binder cylinder；First accumulator
(11) also it is connected with the cavity of resorption of binder cylinder, the second accumulator (12) is connected with the cavity of resorption of shear cylinder.
3. a kind of hydraulic control shear technique of plate shearing machine according to claim 1, it is characterised in that: the shear cylinder
Including the first shear cylinder (8-1) and the second shear cylinder (8-2), the cavity of resorption of the first shear cylinder (8-1) and the second shear cylinder (8-2) is logical
Piping is connected.
4. a kind of hydraulic control shear technique of plate shearing machine according to claim 1, it is characterised in that: the binder cylinder
Including the first binder cylinder (10-1) and the second binder cylinder (10-2), under the first binder cylinder (10-1) and the second binder cylinder (10-2)
Chamber is connected by pipeline.
5. a kind of hydraulic control shear technique of plate shearing machine described in any one of -4 according to claim 1, it is characterised in that: institute
State the T mouth of the first hydraulic control one-way valve (9-1), the second hydraulic control one-way valve (9-2) and the first electro-hydraulic reversing valve (4-1) and second electro-hydraulic
The T mouth of reversal valve (4-2) is connected with fuel tank.
6. a kind of hydraulic control shear technique of plate shearing machine described in any one of -4 according to claim 1, it is characterised in that: institute
State that first is respectively equipped on the oil outlet pipeline of the first oil pump (1-1) and the oil outlet pipeline of the second oil pump (1-2) is straight-through unidirectional
Valve (14-1), the second straight check valve (14-2).
7. a kind of hydraulic control shear technique of plate shearing machine according to claim 6, it is characterised in that: first oil pump
(1-1) and the second oil pump (1-2) are connected from different motor (2) drivings respectively, and the first oil pump (1-1) uses high-pressure pump, the
Two oil pumps (1-2) use low-lift pump.
8. a kind of hydraulic control shear technique of plate shearing machine described in any one of -4 according to claim 1, it is characterised in that: institute
It states and is equipped with high-pressure ball valve (7) and pressure gauge on the oil inlet pipe of the first accumulator (11) and the second accumulator (12).
9. a kind of hydraulic control shear technique of plate shearing machine described in any one of -4 according to claim 1, it is characterised in that: institute
The oil outlet of the first oil pump (1-1) is stated to be connected by pipeline with the first electromagnetic relief valve (3-1), the second oil pump (1-2) it is fuel-displaced
Mouth is connected by pipeline with the second electromagnetic relief valve (3-2), and the first electromagnetic relief valve (3-1), the second electromagnetic relief valve (3-2) are equal
For open type electromagnetic relief valve, and its to be remotely controlled mouth straight-through fuel tank (15).
10. a kind of hydraulic control shear technique of plate shearing machine according to claim 9, it is characterised in that: first oil
The oil outlet of the oil outlet and the second oil pump (1-2) that pump (1-1) passes through pipeline and pressure meter switch (5), vibration-proof pressure gauge (6)
And pressure switch (13) is connected.
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| CN201811146846.0A CN109014364B (en) | 2018-09-29 | 2018-09-29 | Hydraulic control plate shearing process of plate shearing machine |
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| CN201811146846.0A CN109014364B (en) | 2018-09-29 | 2018-09-29 | Hydraulic control plate shearing process of plate shearing machine |
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Cited By (6)
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| CN109654072A (en) * | 2019-01-21 | 2019-04-19 | 湖北新楚风汽车股份有限公司 | The electronic kitchen waste cart hydraulic control system of energy-saving pure |
| CN110529443A (en) * | 2019-08-23 | 2019-12-03 | 江苏高德液压机械有限公司 | A kind of hydraulic system of three directions shearing baling press |
| CN111824645A (en) * | 2019-04-19 | 2020-10-27 | 海沃机械（中国）有限公司 | Movable garbage compression 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 |
| CN113757210A (en) * | 2021-10-18 | 2021-12-07 | 山东泰丰智能控制股份有限公司 | Two-way cartridge valve type hydraulic circuit of rapid press |
| CN115853753A (en) * | 2022-12-22 | 2023-03-28 | 中国第一汽车股份有限公司 | Oil pump unloading system, method, storage medium and vehicle |
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| 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 |
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| CN115853753A (en) * | 2022-12-22 | 2023-03-28 | 中国第一汽车股份有限公司 | Oil pump unloading system, method, storage medium and vehicle |
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