CN106180861A - A kind of lock formula hydraulic system of cutting machine - Google Patents
A kind of lock formula hydraulic system of cutting machine Download PDFInfo
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- CN106180861A CN106180861A CN201610798743.7A CN201610798743A CN106180861A CN 106180861 A CN106180861 A CN 106180861A CN 201610798743 A CN201610798743 A CN 201610798743A CN 106180861 A CN106180861 A CN 106180861A
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- hydraulic system
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Classifications
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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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- 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
- F15B1/04—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
- 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
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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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
Abstract
The invention discloses a kind of lock formula hydraulic system of cutting machine, belong to hydraulic press technical field.Its master cylinder, auxiliary oil cylinder and backhaul oil cylinder are all connected with knife rest；The inlet port of oil pump connects fuel tank, and oil-out is connected with the import of sequence valve, and the outlet of sequence valve is connected with master cylinder；The import of electromagnetic relief valve I is connected with the oil-out of oil pump, and the outlet of electromagnetic relief valve I connects fuel tank；The rod chamber of master cylinder is connected with the rodless cavity of auxiliary oil cylinder, and is connected the oil-out of oil pump by switch valve, and the pipeline of switch valve and master cylinder connection is provided with stop valve II；Accumulator is connected with the oil-out of oil pump by stop valve I, and accumulator is connected with the rod chamber of backhaul oil cylinder, the rodless cavity connection air of backhaul oil cylinder.The present invention is greatly simplified compared to existing hydraulic system, structure, reduces production cost, system run all right and can meet multiple operational requirements, and binder action can individually control and pressure controllable, is also convenient for repair and maintenance.
Description
Technical field
The invention belongs to hydraulic press technical field, more particularly, it relates to a kind of lock formula hydraulic system of cutting machine.
Background technology
Plate shearing machine be with a blade relative to another blade do reciprocating linear motion shear sheet material machine, be borrow in motion
Top cutter and fixing bottom knife, use rational gap blade, the sheet metal of various thickness applied shearing force, makes plate
Material is separated by required size fracture.Plate shearing machine is divided into mechanical type plate shearing machine and fluid pressure type plate shearing machine, mechanical type shear function
The steel plate thickness sheared is typically at below 10mm, and fluid pressure type plate shearing machine is used for shearing the steel plate of more than 6mm.Fluid pressure type shear
Machine is divided into again swing-type plate shears and lock formula plate shearing machine, and lock formula plate shearing machine, compared with swing-type plate shears, has shear precision height, cuts
Cut adjustable angle, the advantage of cutting edge length in service life.
The hydraulic system of plate shearing machine is most important for its performance, but the hydraulic system of existing lock formula plate shearing machine there is also very
Many problems.Structurally, existing hydraulic system is for meeting various function needs, the most complex, uses plate valve, multidigit many
Three-way electromagnetic valve etc. is to make every effort to reach various functional requirement, but numerous and jumbled system can cause the decline of system stability, hydraulic pressure
Stroke walked in pipeline, components and parts by oil increases, and system noise increases, and reveals probability and increases, and the pressure loss is serious, and hydraulic pressure
Oil heats up serious, and the hydraulic system of complexity, cause equipment heavy, production cost is high, and the later stage is also difficult to safeguard.In function
On, existing lock formula hydraulic system of cutting machine function is the most comprehensive, it is impossible to adapting to various applied environment, such as, binder action is not
Can individually control, the binder pressure of binder oil cylinder can not regulate, it is achieved binder, shearing order function less reliable, at binder
Time, if pressure-plate-force is inadequate, displacement will be produced in shear history by shear material, when shearing end of a period, displacement is the brightest especially
Aobvious, so can make to be increased by shear material dimensional discrepancy；If pressure-plate-force is excessive, makes to be cut panel surface and produce impression, also simultaneously
Increase binder cylinder to frame and the load of binder beam, in order to ensure frame and the strength and stiffness of binder beam, only increase machine
Frame and the cross-sectional area of binder beam, thus increase plate shearing machine overall weight, increase the manufacturing cost of plate shearing machine；It addition,
The situations such as later stage system overhaul maintenance are considered comprehensive not, cause system overhaul difficult in maintenance.
In prior art, the hydraulic system research to lock formula plate shearing machine is existing a lot, as Chinese Patent Application No. is:
201310709619.5, publication date is: the patent documentation on March 19th, 2014, discloses a kind of large-scale gate type plate shearing machine hydraulic pressure
System, including the oil cylinder being connected with knife rest, fuel tank, hydraulic power part and hydraulic control valve, oil cylinder includes master cylinder and pair oil
Cylinder, the rod chamber of master cylinder forms serial oil cylinders Tong Bu driving knife rest and moves up and down after connecting with auxiliary oil cylinder rodless cavity；Also include
Be connected to knife rest end, for supporting the balancing cylinder of knife rest, balancing cylinder is two, and the hydraulic fluid port of balancing cylinder and accumulator are even
Connect formation confined space, this confined space is filled with certain pressure, for the hydraulic oil of balance tool holder gravity.The program is only fitted
For large-scale gate type plate shearing machine, its structure is complicated, and equipment is heavy, produces and maintenance cost is high.
And for example, Chinese Patent Application No. is: 200620158152.5, and publication date is: the patent literary composition on October 31st, 2007
Offer, disclose the hydraulic means of a kind of lock formula plate shearing machine, fix master cylinder and auxiliary oil cylinder respectively at tool-post structure two ends, master cylinder
Oil inlet pipe is connected with bidirectional high-pressure stop valve by solenoid directional control valve, and this valve connects with fuel feeding motor, drainage screen respectively, drainage screen
Oil-feed port reach in oil cylinder, and bidirectional high-pressure stop valve separately lead up to pilot operated compound relief valve and solenoid directional control valve,
Check valve is connected to the oil-out of auxiliary oil cylinder, and the oil-in of auxiliary oil cylinder connects with the oil-out of master cylinder, forms hydraulic circuit.The party
Case function is simple, and binder action can not individually control, and system stability is poor, does not considers the operations such as repair and maintenance.
Summary of the invention
1, problem to be solved
There is structure complexity in the hydraulic system for existing lock formula plate shearing machine, causes equipment volume both bulk, produce into
This height, reduction stabilization of equipment performance, and do not adapt to the problem of various operating environment, the present invention provides a kind of lock formula plate shearing machine liquid
Pressure system, compared to existing hydraulic system, structure is greatly simplified, and reduces production cost, system run all right and meeting
Multiple operational requirements, binder action can individually control and pressure controllable, be also convenient for repair and maintenance.
2, technical scheme
For solving the problems referred to above, the present invention adopts the following technical scheme that.
A kind of lock formula hydraulic system of cutting machine, including fuel tank, oil pump, electromagnetic relief valve I, switch valve, sequence valve, accumulation of energy
Device, backhaul oil cylinder, binder cylinder, master cylinder, auxiliary oil cylinder and check valve II；The piston rod of described master cylinder and auxiliary oil cylinder connects cutter
Frame, for driving knife rest to move downward the shearing of sheet material, backhaul oil cylinder is connected with knife rest, is used for driving knife rest upwards to return
Cheng Yundong；Described oil pump is driven by motor, and the inlet port of oil pump connects fuel tank, and oil-out is connected with the import of sequence valve,
The outlet of sequence valve is connected with the rodless cavity of master cylinder；The described import of electromagnetic relief valve I is connected with the oil-out of oil pump, electricity
The outlet of magnetic overflow valve I connects fuel tank；The rod chamber of described master cylinder is connected with the rodless cavity of auxiliary oil cylinder, and by switch
Valve connects the oil-out of oil pump, and the pipeline of switch valve and master cylinder connection is provided with stop valve II；Described accumulator passes through
Stop valve I is connected with the oil-out of oil pump, and accumulator is connected with the rod chamber of backhaul oil cylinder, the rodless cavity connection sky of backhaul oil cylinder
Gas.
As a further improvement on the present invention, described binder cylinder is connected by the oil-out of two-position two-way solenoid valve with oil pump
Connecing, check valve II is connected in parallel on the two ends of two-position two-way solenoid valve.
As a further improvement on the present invention, the described pipeline between binder cylinder and two-position two-way solenoid valve is provided with
One way pressure-reducing valve.
As a further improvement on the present invention, described one way pressure-reducing valve connects Pressure gauge II by pressure meter switch II.
As a further improvement on the present invention, described accumulator connects Pressure gauge I by pressure meter switch I.
As a further improvement on the present invention, between outlet and the fuel tank of described sequence valve, electromagnetic relief valve II is set.
As a further improvement on the present invention, the oil pressure relief of described electromagnetic relief valve I is more than the unlatching pressure of sequence valve
Power, less than the oil pressure relief of electromagnetic relief valve II.
As a further improvement on the present invention, oil filter is set, the outlet line of oil pump between described oil pump and fuel tank
Upper installation check valve I.
As a further improvement on the present invention, described fuel tank is provided with liquidometer, and fuel tank is by air filter and sky
Gas connects.
As a further improvement on the present invention, described accumulator is bladder type hydropneumatic accumulator.
3, beneficial effect
Compared to prior art, the invention have the benefit that
(1) lock formula hydraulic system of cutting machine of the present invention, compared to existing hydraulic system of cutting machine, structure is greatly simplified,
Reducing pipeline to arrange, components and parts can focus on an integrated valve block, and structure is compacter, whole compared with the plate shearing machine of same specification
Body weight can reduce by more than 2.4%, and plate shearing machine cost reduces at least 4%, and system acting is sensitive, No leakage, stable and reliable in work,
And control accuracy is high, owing to pipeline is few, hydraulic oil stroke is short, so work process is generated heat less, noise is little, system pressure is the most steady
Fixed, the pressure loss can be reduced to minimum；It addition, the function achieved by this system is many, adjust including pre-binder, shearing, the angle of shear
Joint, trouble shooting etc., meet various work requirements；
(2) lock formula hydraulic system of cutting machine of the present invention, binder cylinder is connected by the oil-out of two-position two-way solenoid valve with oil pump
Connect, can individually control binder cylinder and carry out binder, and binder pressure adjustable, Pressure gauge II shows force value, adapt to difference
The compression demand of thickness plate, the use of sequence valve, it is achieved binder, shearing order function reliable；
(3) lock formula hydraulic system of cutting machine of the present invention, arranges electromagnetic relief valve II between outlet and the fuel tank of sequence valve, real
The overload protection of existing system, and the oil pressure relief of electromagnetic relief valve I is more than the unlatching pressure of sequence valve, less than electromagnetic relief valve II
Oil pressure relief, control the opening sequence of each valve, it is ensured that system is properly functioning；
(4) lock formula hydraulic system of cutting machine of the present invention, arranges oil filter between oil pump and fuel tank, keeps away how sump oil enters system
Become the damage of each Hydraulic Elements, the outlet line of oil pump is installed check valve I, it is to avoid hydraulic oil refluence oil-feed pump and the damage that causes
Wound；
(5) lock formula hydraulic system of cutting machine of the present invention, fuel tank is provided with liquidometer, in real time hydraulic pressure innage in monitoring fuel tank
Degree, prevents hydraulic oil not enough, it is possible to supplement in time, and fuel tank passes through air filter and air communication, it is to avoid dust sucks and causes
Hydraulic oil pollution；
(6) lock formula hydraulic system of cutting machine of the present invention, accumulator employing bladder type hydropneumatic accumulator, energy stored energy, steady pressure,
Reduce energy consumption, compensate leakage loss, have that inertia is little, be quick on the draw, be difficult to gas leakage, be suitable as eliminating the advantages such as pulse, its inflation
Easy with safeguarding, inflation is also convenient for；
(7) lock formula hydraulic system of cutting machine of the present invention, simple in construction, reasonable in design, it is easy to implement.
Accompanying drawing explanation
Fig. 1 is the hydraulic schematic diagram of the present invention a kind of lock formula hydraulic system of cutting machine.
In figure: 1, fuel tank；2, liquidometer；3, air filter；4, oil filter；5, oil pump；6, motor；7, check valve I；8、
Electromagnetic relief valve I；9, stop valve I；10, switch valve；11, sequence valve；12, pressure meter switch I；13, Pressure gauge I；14, accumulation of energy
Device；15, backhaul oil cylinder；16, binder cylinder；17, stop valve II；18, master cylinder；19, auxiliary oil cylinder；20, one way pressure-reducing valve；21, single
To valve II；22, two-position two-way solenoid valve；23, electromagnetic relief valve II；24, pressure meter switch II；25, Pressure gauge II.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the present invention is further described below.
Embodiment 1
As it is shown in figure 1, a kind of lock formula hydraulic system of cutting machine of the present embodiment, including fuel tank 1, oil pump 5, electromagnetic relief valve
I 8, switch valve 10, sequence valve 11, accumulator 14, backhaul oil cylinder 15, binder cylinder 16, master cylinder 18, auxiliary oil cylinder 19 and check valve II
21.Wherein, the piston rod of described master cylinder 18 and auxiliary oil cylinder 19 connects knife rest, is used for driving knife rest to move downward sheet material
Shearing, auxiliary oil cylinder 19 uses plunger case, backhaul oil cylinder 15 to be connected with knife rest, is used for driving knife rest upwards to do drawback movement.
Described fuel tank 1 is provided with liquidometer 2, monitors liquid level in real time, prevents hydraulic oil not enough, it is possible to mend in time
Filling, fuel tank 1 is by air filter 3 and air communication, it is to avoid dust sucks and causes hydraulic oil pollution.Described oil pump 5 passes through
Motor 6 drives, and the inlet port of oil pump 5 connects fuel tank 1 by oil filter 4, and oil-out is entered by check valve I 7 and sequence valve 11
Mouth connects, and the outlet of sequence valve 11 is connected with the rodless cavity of master cylinder 18；The import of described electromagnetic relief valve I 8 and oil pump 5
Oil-out connects, and the outlet of electromagnetic relief valve I 8 connects fuel tank 1；Between outlet and the fuel tank 1 of described sequence valve 11, electricity is set
Magnetic overflow valve II 23, and the oil pressure relief of electromagnetic relief valve I 8 is more than the unlatching pressure of sequence valve 11, less than electromagnetic relief valve II
The oil pressure relief of 23.
In the present embodiment, the rod chamber of described master cylinder 18 is connected with the rodless cavity of auxiliary oil cylinder 19, and by switch
Valve 10 connects the oil-out of oil pump 5, and the pipeline of switch valve 10 and master cylinder 18 connection is provided with stop valve II 17；Described storage
Bladder type hydropneumatic accumulator can be used by device 14, can stored energy, steady pressure, reduce energy consumption, compensate leakage loss, have that inertia is little, reaction spirit
Quick, be difficult to gas leakage, be suitable as eliminating the advantage such as pulse, its inflation and safeguard that easily inflation is also convenient for, accumulator 14 is by cutting
Only valve I 9 is connected with the oil-out of oil pump 5, and accumulator 14 is connected with the rod chamber of backhaul oil cylinder 15, the rodless cavity of backhaul oil cylinder 15
Connection air, accumulator 14 connects Pressure gauge I 13 by pressure meter switch I 12, opens pressure meter switch I 12, can be by pressure
The pressure of accumulator 14 monitored in real time by power table I 13.
In the present embodiment, described binder cylinder 16 is connected with the oil-out of oil pump 5 by two-position two-way solenoid valve 22, unidirectional
Valve II 21 is connected in parallel on the pipeline between the two ends of two-position two-way solenoid valve 22, and binder cylinder 16 and two-position two-way solenoid valve 22 and sets
Being equipped with one way pressure-reducing valve 20, one way pressure-reducing valve 20 connects Pressure gauge II 25 by pressure meter switch II 24, can monitor binder in real time
The force value of cylinder 16.
In the present embodiment, electromagnetic relief valve I 8 and electromagnetic relief valve II 23 use BOSCH-REXROTH model to be DBW30B-50/
The valve of 31.5NZ5L, running voltage is DC 24V, and the oil pressure relief of electromagnetic relief valve I 8 is set as 23MPa, electromagnetic relief valve II
The oil pressure relief of 23 is set as 28MPa；Stop valve I 9 and stop valve II 17 use the YJF-L20H of good source board；Switch valve 10 uses
Bosch switch valve 0810, running voltage DC 24V；Sequence valve 11 uses the DZ30-50/21Y without tin oil power board, sets and opens pressure
Power is 8MPa；Pressure meter switch I 12 and pressure meter switch II 24 use the KF-L8/ of Nangong City Xinghua Filters maker
14E, Pressure gauge I 13 and Pressure gauge II 25 use the YN-60I-40MPA of Nangong City Xinghua Filters maker；Accumulator 14
Use the NXQ1-F40/31.5 of Wuhan Fu Taisheng mechanical & electronic equipment corporation, Ltd；One way pressure-reducing valve 20 uses Fu Lide hydraulic machinery
The JDF-B20H of manufacturer production.
In the present embodiment, the electric magnet of electromagnetic relief valve I 8 is expressed as YV0, and the electric magnet of switch valve 10 is expressed as YV1, and two
The electric magnet of position two-way electromagnetic valve 22 is expressed as YV2, and the electric magnet of electromagnetic relief valve II 23 is expressed as YV3.Below to this hydraulic pressure
Each holding function of system is described in detail.
1. system unloaded holding state
The equal power-off of YV0, YV1, YV2 and YV3, oil pump 5 starts, and pressure oil flows back to oil through check valve I 7 and electromagnetic relief valve I 8
Case 1, system is in off-load holding state.
The most pre-binder controls
YV0 obtains electric, and pressure oil sequentially passes through check valve I 7, check valve II 21 and one way pressure-reducing valve 20 and enters binder cylinder 16,
Binder cylinder 16 descent of piston compresses plate, can control the thrust of binder cylinder 16 by regulation one way pressure-reducing valve 20, now, even if
Oil pump 5 does not works or YV0 power-off, if YV2 not electric, it is motionless that binder cylinder 16 is in binder state, has locking function；When
YV2 obtains electric, and under the spring-force driven dual of binder cylinder 16 own, in binder cylinder 16, hydraulic oil is released back into fuel tank 1, and binder cylinder 16 returns to
Dead point, releases binder.This kind of mode, can individually control binder cylinder 16 and carry out binder, and binder pressure adjustable, at Pressure gauge II
Show force value on 25, adapt to different length and the compression demand of thickness plate, especially when overlength plate cutting is to line, this merit
Can be highly useful.
3. (knife rest is descending) is sheared
YV0, YV3 obtain electric, and pressure oil initially enters binder cylinder 16, and binder cylinder 16 descent of piston compresses plate, when system pressure
Power exceedes the setting pressure of sequence valve 11, i.e. 8MPa, and pressure oil enters the rodless cavity of master cylinder 18 through sequence valve 11, due to main oil
The rod chamber of cylinder 18 connects with the rodless cavity of auxiliary oil cylinder 19, so the synchronization of master cylinder 18 and auxiliary oil cylinder 19 drives knife rest descending,
And hydraulic oil is pressed in accumulator 14 in backhaul oil cylinder 15 rod chamber, backhaul oil cylinder 15 rodless cavity sucks air, accumulator 14
The interior air bag being full of nitrogen is compressed, for the backhaul accumulation of energy of knife rest.
4. backhaul (knife rest is up)
YV2 obtains electric, other electromagnetic valve power-off, under the pulling force effect of binder cylinder 16 spring, and hydraulic oil quilt in binder cylinder 16
It is released back into fuel tank 1, binder cylinder 16 backhaul, unclamps plate；Meanwhile, the passage of master cylinder 18 rodless cavity to fuel tank 1 is also opened, and is stored
Nitrogen pressure release action in energy device 14, the hydraulic oil being gathered in accumulator 14 starts to drive backhaul oil cylinder 15 rod chamber to live
Plug, promotes knife rest up, and backhaul oil cylinder 15 rodless cavity air-out is until top dead-centre.
5. the knife rest angle of shear reduces
YV0 and YV1 obtains electric, opens stop valve II 17, and pressure oil enters rod chamber and the pair of master cylinder 18 through switch valve 10
The rodless cavity of oil cylinder 19, auxiliary oil cylinder 19 piston starts descending, knife rest under the driving of auxiliary oil cylinder 19 and workbench angle gradually
Reduce；When, after YV0 and YV1 power-off, master cylinder 18 and auxiliary oil cylinder 19 are locked, and the knife rest angle of shear is i.e. fixed, and closes stop valve
II 17, complete angle of shear reduction action.In actual use, shearing thin plate needs to reduce the angle of shear, is conducive to improving production effect
Rate.
6. the knife rest angle of shear increases
YV1 obtains electric, opens stop valve II 17, the quilt under the driving of backhaul oil cylinder 15 of the hydraulic oil in auxiliary oil cylinder 19 rodless cavity
Pushing back fuel tank 1, auxiliary oil cylinder 19 piston stroking upward, knife rest is gradually increased with the angle of workbench under the driving of auxiliary oil cylinder 19；Work as YV1
Power-off, master cylinder 18 and auxiliary oil cylinder 19 are locked, and the knife rest angle of shear is fixed, and closes stop valve II 17, complete the angle of shear and increase
Action.In actual use, when shearing thicker plate, need to increase the angle of shear, improve shear ability.
7. accumulator topping up
YV0 obtains electric, and system sets up pressure, and the supercharging pressure adjusting sequence valve 11 is 12～16MPa, opening stop valve I 9,
Now system pressure oil enters the grease chamber of accumulator 14 through stop valve I 9, and in backhaul oil cylinder 15, hydraulic fluid pressure becomes larger, cutter
Frame slowly rises until top dead-centre under the active force of backhaul oil cylinder 15；After pressure reaches the supercharging pressure that sequence valve 11 is set up
Force value tends towards stability, now quick closedown stop valve I 9, terminates accumulator 14 topping up, again the work pressure of setting up sequence valve 11
Power, to 8MPa, completes accumulator 14 topping up.This kind of frame mode, when equipment breaks down, convenient maintenance.
8. oil cylinder topping up
Opening stop valve I 9, the hydraulic oil in release accumulator 14 makes knife rest fall to lower dead center, opens stop valve II 17,
Slightly being unclamped by the bleed screw at auxiliary oil cylinder 19 top, start oil pump 5, YV0 and YV1 obtains electric, and hydraulic oil enters main oil
In the rod chamber of cylinder 18 and the rodless cavity of auxiliary oil cylinder 19, monitor bleed screw, begin with fluid and suspend when bleed screw overflows
Liquid-filled operation, proceeded liquid-filled operation after five minutes, was repeated several times above operation, until air vent does not has gas to discharge, i.e.
Have been filled with fluid in representing oil cylinder, finally bleed screw is locked.
The lock formula hydraulic system of cutting machine of the present invention, compared to existing hydraulic system of cutting machine, structure is greatly simplified, and subtracts
Education and correction for juvenile offenders road is arranged, components and parts can focus on an integrated valve block, and structure is compacter, entirety compared with the plate shearing machine of same specification
Weight can reduce by more than 2.4%, and plate shearing machine cost reduces at least 4%, and system acting is sensitive, No leakage, stable and reliable in work, and
Control accuracy is high, and owing to pipeline is few, hydraulic oil stroke is short, so work process is generated heat less, noise is little, system pressure is the most steady
Fixed, the pressure loss can be reduced to minimum.
Example of the present invention is only to be described the preferred embodiment of the present invention, not to present inventive concept and
Scope is defined, on the premise of without departing from design philosophy of the present invention, and this area engineers and technicians technology to the present invention
Various deformation that scheme is made and improvement, all should fall into protection scope of the present invention.
Claims (10)
1. a lock formula hydraulic system of cutting machine, including fuel tank (1), oil pump (5), electromagnetic relief valve I (8), backhaul oil cylinder (15),
Binder cylinder (16), master cylinder (18) and auxiliary oil cylinder (19)；The piston rod of described master cylinder (18) and auxiliary oil cylinder (19) connects cutter
Frame, for driving knife rest to move downward the shearing of sheet material, backhaul oil cylinder (15) is connected with knife rest, is used for driving knife rest upwards
Do drawback movement, it is characterised in that: also include switch valve (10), sequence valve (11), accumulator (14) and check valve II (21)；Institute
The oil pump (5) stated is driven by motor (6), and the inlet port of oil pump (5) connects fuel tank (1), and oil-out enters with sequence valve (11)
Mouth connects, and the outlet of sequence valve (11) is connected with the rodless cavity of master cylinder (18)；The import of described electromagnetic relief valve I (8) with
The oil-out of oil pump (5) connects, and the outlet of electromagnetic relief valve I (8) connects fuel tank (1)；The rod chamber of described master cylinder (18)
It is connected with the rodless cavity of auxiliary oil cylinder (19), and is connected the oil-out of oil pump (5) by switch valve (10), switch valve (10) and master
Stop valve II (17) it is provided with on the pipeline that oil cylinder (18) connects；Described accumulator (14) passes through stop valve I (9) and oil pump
(5) oil-out connects, and accumulator (14) is connected with the rod chamber of backhaul oil cylinder (15), the rodless cavity connection of backhaul oil cylinder (15)
Air.
A kind of lock formula hydraulic system of cutting machine the most according to claim 1, it is characterised in that: described binder cylinder (16) leads to
Crossing two-position two-way solenoid valve (22) to be connected with the oil-out of oil pump (5), check valve II (21) is connected in parallel on two-position two-way solenoid valve
(22) two ends.
A kind of lock formula hydraulic system of cutting machine the most according to claim 2, it is characterised in that: described binder cylinder (16) and
One way pressure-reducing valve (20) it is provided with on pipeline between two-position two-way solenoid valve (22).
A kind of lock formula hydraulic system of cutting machine the most according to claim 3, it is characterised in that: described one way pressure-reducing valve
(20) Pressure gauge II (25) is connected by pressure meter switch II (24).
5. according to a kind of lock formula hydraulic system of cutting machine described in any one in claim 1-4, it is characterised in that: described
Accumulator (14) connects Pressure gauge I (13) by pressure meter switch I (12).
6. according to a kind of lock formula hydraulic system of cutting machine described in any one in claim 1-4, it is characterised in that: described
Between outlet and the fuel tank (1) of sequence valve (11), electromagnetic relief valve II (23) is set.
A kind of lock formula hydraulic system of cutting machine the most according to claim 6, it is characterised in that: described electromagnetic relief valve I
(8) oil pressure relief is more than the unlatching pressure of sequence valve (11), less than the oil pressure relief of electromagnetic relief valve II (23).
A kind of lock formula hydraulic system of cutting machine the most according to claim 1, it is characterised in that: described oil pump (5) and oil
Oil filter (4) is set between case (1), the outlet line of oil pump (5) is installed check valve I (7).
A kind of lock formula hydraulic system of cutting machine the most according to claim 1, it is characterised in that: described fuel tank (1) is installed
Having liquidometer (2), fuel tank (1) passes through air filter (3) and air communication.
10. according to a kind of lock formula hydraulic system of cutting machine described in claim 7 or 8 or 9, it is characterised in that: described accumulation of energy
Device (14) is bladder type hydropneumatic accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610798743.7A CN106180861B (en) | 2016-08-31 | 2016-08-31 | A kind of lock formula plate shearing machine hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610798743.7A CN106180861B (en) | 2016-08-31 | 2016-08-31 | A kind of lock formula plate shearing machine hydraulic system |
Publications (2)
| Publication Number | Publication Date |
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| CN106180861A true CN106180861A (en) | 2016-12-07 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443252A (en) * | 2018-04-23 | 2018-08-24 | 无锡锡锻机床有限公司 | The hydraulic system of multistation punching shear production line |
| CN108561348A (en) * | 2018-07-11 | 2018-09-21 | 中铁磁浮科技（成都）有限公司 | Magnetic-levitation train hydraulic support system and control method |
| CN108869414A (en) * | 2018-07-23 | 2018-11-23 | 武汉理工大学 | A kind of energy-saving no surge type hydraulic shear |
| CN109322881A (en) * | 2018-11-23 | 2019-02-12 | 安徽东海机床制造有限公司 | A kind of Double-station horizontal plate shearing machine and its hydraulic system and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108443252A (en) * | 2018-04-23 | 2018-08-24 | 无锡锡锻机床有限公司 | The hydraulic system of multistation punching shear production line |
| CN108561348A (en) * | 2018-07-11 | 2018-09-21 | 中铁磁浮科技（成都）有限公司 | Magnetic-levitation train hydraulic support system and control method |
| CN108869414A (en) * | 2018-07-23 | 2018-11-23 | 武汉理工大学 | A kind of energy-saving no surge type hydraulic shear |
| CN109322881A (en) * | 2018-11-23 | 2019-02-12 | 安徽东海机床制造有限公司 | A kind of Double-station horizontal plate shearing machine and its hydraulic system and application |
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