CN107983954A - A kind of Novel oil hydraulic press - Google Patents
A kind of Novel oil hydraulic press Download PDFInfo
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- CN107983954A CN107983954A CN201810027980.2A CN201810027980A CN107983954A CN 107983954 A CN107983954 A CN 107983954A CN 201810027980 A CN201810027980 A CN 201810027980A CN 107983954 A CN107983954 A CN 107983954A
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- guide post
- oil
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- 239000002828 fuel tank Substances 0.000 claims description 25
- 238000012856 packing Methods 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 2
- 230000010363 phase shift Effects 0.000 claims 1
- 239000000843 powder Substances 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 6
- 239000000956 alloy Substances 0.000 abstract description 5
- 238000011160 research Methods 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 abstract description 3
- 238000011017 operating method Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 62
- 230000000694 effects Effects 0.000 description 13
- 230000007812 deficiency Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 4
- 210000001161 mammalian embryo Anatomy 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/04—Compacting only by applying fluid pressure, e.g. by cold isostatic pressing [CIP]
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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
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
-
- 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
- F15B11/22—Synchronisation of the movement of two or more servomotors
-
- 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
- F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
-
- 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
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The present invention relates to alloy material powder pressing device technical field, more particularly to a kind of Novel oil hydraulic press, including control cabinet, hydraulic control system is equipped with control cabinet, control cabinet is equipped with some guide posts, hydraulic cylinder, and guide post is equipped with movable plate, fixed plate, hydraulic cylinder is connected with movable plate, fixed plate is fixedly connected with the top of guide post, and hydraulic control system driving hydraulic cylinder, Driven by Hydraulic Cylinder movable plate is slided up and down along guide post.The hydraulic press that the design provides exerts a force, and balanced, guiding is steady；Pressure size and dwell time using intelligent control hydraulic press, improve mechanism operating procedure repeatability, are conducive to follow-up scientific research；Human oriented design, improves working condition, improves work efficiency, extend the service life of mould and machine, improve applicability and operability.
Description
Technical field
The present invention relates to alloy material powder pressing device technical field, more particularly to a kind of Novel oil hydraulic press.
Background technology
It is used for the small-sized hand-operated hydraulic press of alloy material press-powder currently on the market, is oriented to using twin columns, intermediate active plate
The gap of (force application board) between guide post is big, and single jack force, there are intermediate active plate (force application board) left and right lateral pressure mostly
Inequality, and the plate rocks the problem of serious in motion process, leads to not positive normal pressure embryo or molding effect is bad, each position of idiosome
Density inhomogeneity, pressure embryo is reduced rapidly with mould, hydraulic jack service life and critical component serious wear etc., seriously constrains
Follow-up scientific research.In addition, machine construction design it is unreasonable because upper lower platen meta move restricted problem cause for
The mould of large-size can not work normally, the obvious deficiency of versatility and During manual operation is cumbersome, heavy workload, manually into
This is higher.
The content of the invention
The present invention is the above-mentioned technological deficiency of solution, there is provided a kind of Novel oil hydraulic press.The hydraulic press that the design provides
Force is balanced, it is steady to be oriented to；Pressure size and dwell time using intelligent control hydraulic press, repeat mechanism operating procedure
Property improve, be conducive to follow-up scientific research；Human oriented design, improves working condition, improves work efficiency, extend mould
With the service life of machine, applicability and operability are improved.
The technical scheme is that；A kind of Novel oil hydraulic press, wherein, including control cabinet, the control cabinet is interior to be equipped with liquid
Pressure control system, the control cabinet are equipped with some guide posts, hydraulic cylinder, and the guide post is equipped with movable plate, fixed plate, the liquid
Cylinder pressure is connected with movable plate, and the fixed plate is fixedly connected with the top of guide post, the hydraulic control system driving hydraulic cylinder, liquid
Cylinder pressure driving movable plate is slided up and down along guide post.
The hydraulic press is when being worked, it would be desirable to which the alloy material mould for carrying out press-powder is placed on movable plate, is started
Hydraulic control system driving hydraulic cylinder in control cabinet, hydraulic cylinder drive movable plate to be slided along guide post to fixed plate and extrude, make
Mould on movable plate carries out pressure embryo or shaping between movable plate and fixed plate, and after completing extruding, movable plate is in hydraulic cylinder
Along guide post homing under driving, extruding next time is waited.
Further, hydraulic cylinder is arranged on the center of control cabinet, and the guide post is symmetricly set on control cabinet centered on hydraulic cylinder
Four corners on, four corners that the guide post is each passed through movable plate are connected with fixed plate.The setting of guide post position makes work
When hydraulic cylinder is extruded, mould uniform force, will not produce and rock movable plate, make mould positive normal pressure embryo or molding effect good,
Each position even density of idiosome, while the distance between fixed plate and movable plate can be adjusted by guide post.
Further, it is cased with spring on the guide post between the fixed plate and movable plate.Spring is in hydraulic press pressure release, compression
Hydraulic cylinder return.
Further, the top of guide post is equipped with screw rod, and four corners of the screw rod through fixed plate are connected with nut.It is fixed
Plate is connected by screw hole (screw hole center size is as the size of guide post center) with the screw rod on guide post, can adjust movable plate with consolidating
The distance between fixed board；Nut is installed on the screw rod of guide post, is had locking effect.
Further, movable plate is equipped with guide sleeve with guide post junction.(hole center size is with leading in all holes of four corners of movable plate
Column center size is the same) on guide sleeve is installed, guide sleeve and guide post do clearance fit, and the working beam of movable plate and hydraulic cylinder connects,
Movable plate can be slided up and down along guide post.
Further, hydraulic control system include control panel, PLC hosts, fuel tank, oil pump, motor, speed governing valve, two two
Electric change valve, 3-position-3-way solenoid directional control valve, flow divider-combiner, the PLC hosts and control panel, motor, two two
Electric change valve, 3-position-3-way solenoid directional control valve are electrically connected, the fuel tank, oil pump, speed governing valve, bi-bit bi-pass electromagnetic switch
Connected between valve, 3-position-3-way solenoid directional control valve, flow divider-combiner by oil pipe, the flow divider-combiner is connected with hydraulic cylinder；
The motor drives oil pump to be transported to speed governing valve from fuel tank oil pumping, and oil is transported to by speed governing valve by 3-position-3-way solenoid directional control valve
Oil is transported to hydraulic cylinder by flow divider-combiner, flow divider-combiner, when hydraulic cylinder is in off position or packing state, two
Two electric change valves, which are arranged on the circuit of oil pump and fuel tank, to be used to carry out off-load to oil pump, oil is back in fuel tank.
Installed in the control panel of control cabinet, operating pressure and the dwell time of hydraulic control system can be set, and is made
Display acts on, while can control motor and reversing solenoid valve.The hydraulic control system is real by the use of PLC hosts as control core
Existing intelligent control, when being driven hydraulic cylinder, first passes through control panel and restarts electricity to PLC host input parameters, PLC hosts
Machine drives oil pump to be transported to speed governing valve from fuel tank oil pumping, and oil is transported to shunting collection by speed governing valve by 3-position-3-way solenoid directional control valve
Valve is flowed, oil is transported to hydraulic cylinder, realizes the control to hydraulic cylinder by flow divider-combiner, and off position or guarantor are in hydraulic cylinder
During pressure condition, two-position two-way electromagnetic directional valve, which is arranged on the circuit of oil pump and fuel tank, to be used to carry out off-load to oil pump, makes oily reflux
Into fuel tank.Wherein, PLC hosts are by controlling two-position two-way electromagnetic directional valve, 3-position-3-way solenoid directional control valve to realize to oil
Strike angle, reaching makes hydraulic cylinder operation in the best condition, reduces power consumption and energy loss, the service life for improving oil pump, improves
Efficiency.
Further, hydraulic control system is additionally provided with electrohydraulic digital overflow valve, the electrohydraulic digital overflow valve and bi-bit bi-pass
Solenoid directional control valve is attempted by the circuit of oil pump and fuel tank.Electrohydraulic digital overflow valve is acted on level pressure overflow：There is provided in oil pump
During constant oil mass, when the pressure increase of system, it can reduce oil mass demand, overflow valve is opened at this time, unnecessary oil mass is overflow
Oil return box, ensures overflow valve inlet pressure, i.e. fuel pump outlet pressure is constant（Valve port is often opened with pressure oscillation）.Have at the same time
Safeguard protection acts on：During normal work, valve is closed, and only load exceedes the defined limit（System pressure exceedes set pressure）
Shi Kaiqi overflows, carry out overload protection, system pressure is not further added by（Usually make the set pressure of overflow valve than system most senior engineer
It is high by 10%~20% to make pressure）, it is used as unloading valve.
Further, collecting filter is equipped between fuel tank and oil pump.Contaminant filter in oil can be made this by the collecting filter of setting
Hydraulic system operation is more smooth, ensures work efficiency.
Further, check valve is equipped between speed governing valve and 3-position-3-way solenoid directional control valve.The effect of check valve is：Hydraulic cylinder
During in packing state, hydraulic oil is prevented to be back in speed governing valve.
Further, hydraulic control system is additionally provided with accumulator, pressure sensor.Accumulator acts on：Hydraulic cylinder, which is in, to be protected
During pressure condition, oil pump off-load, accumulator is energized to system, ensures that cylinder pressure is stablized；The effect of pressure sensor is：Hydraulic pressure
When cylinder needs long-time pressurize, accumulator deficiency maintains hydraulic cylinder pressure stability, and pressure sensor sends signal to PLC hosts,
PLC hosts stop the off-load of oil pump, steering fuel feeding.
Further, the bottom of control cabinet is equipped with roller.Roller is installed on the bottom of control cabinet, plays support and the mobile oil pressure
Machine is used.
Hydraulic control system has following functions：
Speed-regulating function：It is made of oil pump, speed governing valve, flow divider-combiner and hydraulic cylinder, it is big by adjusting the flow section of speed governing valve
It is small, the speed of service of hydraulic cylinder required by realization.
Synchronizing function：It is made of flow divider-combiner and hydraulic cylinder, hydraulic cylinder passes through shunting when doing downlink and uplink movement
The average shunting of combiner valve or afflux function, realize multiple hydraulic cylinders synchronization, ensure the balance of operating pressure, keep strokes.
Pressure holding function：By pressure sensor, check valve, 3-position-3-way solenoid directional control valve, flow divider-combiner, hydraulic cylinder and storage
Energy device composition, when hydraulic cylinder, which is gone downwards to, limits pressure, 3-position-3-way solenoid directional control valve is in an intermediate position, and hydraulic cylinder, which is in, to be protected
Pressure condition.The effect of check valve is：When hydraulic cylinder is in packing state, prevent hydraulic oil from flowing back；Accumulator acts on：Hydraulic cylinder
During in packing state, oil pump off-load, accumulator is energized to system, ensures that cylinder pressure is stablized；The effect of pressure sensor
It is：When hydraulic cylinder needs long-time pressurize, accumulator deficiency maintains hydraulic cylinder pressure stability, and pressure sensor is sent out to PLC hosts
The number of delivering letters, PLC hosts stop the off-load of oil pump, steering fuel feeding.
Load releasing function：Hydraulic cylinder is in packing state or during in off position, and 3-position-3-way solenoid directional control valve is in
Centre position, two-position two-way electromagnetic directional valve conducting, oil pump off-load, reduces energy loss, improves the service life of pump, efficient.
The beneficial effects of the invention are as follows；The present invention proposes brand-new Full-automatic oil hydraulic machine, and hydraulic press force is balanced, is oriented to
Steadily；Pressure size and dwell time using PLC control hydraulic presses, the pressure needed by man-machine communication's formula interface input system
Power and dwell time, the pressure of PLC control hydraulic control systems and dwell time, improve mechanism operating procedure repeatability,
Be conducive to follow-up scientific research.By human oriented design, improve its working condition, improve its work efficiency, extend mould
The service life of tool and machine, improves applicability and operability.
Brief description of the drawings
Fig. 1 is the structure diagram of hydraulic press.
Fig. 2 is the connection diagram of hydraulic control system.
Fig. 3 is the schematic diagram of hydraulic control system.
Embodiment
Attached drawing is only for illustration, it is impossible to is interpreted as the limitation to this patent；It is attached in order to more preferably illustrate the present embodiment
Scheme some components to have omission, zoom in or out, do not represent the size of actual product；To those skilled in the art,
Some known features and its explanation may be omitted and will be understood by attached drawing.Being given for example only property of position relationship described in attached drawing
Explanation, it is impossible to be interpreted as the limitation to this patent.
Embodiment 1：
As shown in Fig. 1-Fig. 3, this hydraulic press is used as base by control cabinet 1, and 4 guide posts are installed on four corners of control cabinet 1
The central symmetry of 2,4 guide posts 2 and control cabinet 1 is distributed；2 single-out lever single-acting hydraulics are installed on the centre of control cabinet 1
Cylinder 3,3 cylinder body of hydraulic cylinder are fixedly connected with control cabinet 1, and 2 hydraulic cylinders 3 are distributed with 1 central symmetry of control cabinet；Guide post 2 is equipped with
4,4 guide posts 4 of movable plate are each passed through all holes (hole center size is as the size of guide post center) of 4 four corners of movable plate,
4 guide sleeves are installed, guide sleeve does clearance fit with guide post 2, and movable plate 4 is connected with the working beam of 2 hydraulic cylinders 3, control in hole
Hydraulic control system is equipped with case 1, hydraulic control system driving hydraulic cylinder 3 makes movable plate 4 to be slided up and down along guide post 2；Gu
Fixed board 5 is fixedly connected with the top of guide post 2, fixed plate 5 by screw hole (screw hole center size is as the size of guide post center) with
Screw rod connection on guide post 2, can adjust the distance between movable plate 4 and fixed plate 5, nut is installed on guide post 2 by screw rod
On screw rod, have locking effect；4 springs 6 are installed, spring 6 is in hydraulic press on the guide post between movable plate 4 and fixed plate 5
During pressure release, 3 return of compression hydraulic cylinder；Installed in the control panel 7 of control cabinet 1, the work pressure of hydraulic control system can be set
Power and dwell time, and make display effect, while motor 11 and reversing solenoid valve can be controlled；4 rollers are installed on control cabinet 1
Bottom, play support and mobile hydraulic press used.
Hydraulic control system realizes intelligent control by the use of PLC hosts 8 as control core, when being driven hydraulic cylinder 3,
Control panel 7 is first passed through to 8 input parameter of PLC hosts, PLC hosts 8 restart motor 11 drive oil pump 10 pump from fuel tank 9 it is defeated
Speed governing valve 12 is sent to, oil is transported to flow divider-combiner 15, flow distributing and collecting by speed governing valve 12 by 3-position-3-way solenoid directional control valve 14
Oil is transported to hydraulic cylinder 3 by valve 15, realizes the control to hydraulic cylinder 3, and off position or packing state are in hydraulic cylinder 3
When, two-position two-way electromagnetic directional valve 13 is arranged on oil pump 10 and carries out off-load to oil pump 10 with being used on the circuit of fuel tank 9, makes oily reflux
Into fuel tank 9.Wherein, PLC hosts 8 are by controlling two-position two-way electromagnetic directional valve 13,3-position-3-way solenoid directional control valve 14 to realize
To the strike angle of oil, reaching makes hydraulic cylinder 3 run in the best condition, reduces power consumption and energy loss, improves oil pump 10
In the service life, improve efficiency.
Wherein, hydraulic control system is additionally provided with electrohydraulic digital overflow valve 16, electrohydraulic digital overflow valve 16 and bi-bit bi-pass electricity
Magnetic reversal valve 13 is attempted by oil pump 10 and on the circuit of fuel tank 9, electrohydraulic digital overflow valve 17 has the function that level pressure overflow；
Wherein, collecting filter 17 is equipped between fuel tank 9 and oil pump 10, the contaminant filter in oil can be made the hydraulic pressure by collecting filter 17
System operation is more smooth, ensures work efficiency.
Wherein, check valve 18 is equipped between speed governing valve 12 and 3-position-3-way solenoid directional control valve 14.The effect of check valve 18 is：
When hydraulic cylinder 3 is in packing state, hydraulic oil is prevented to be back in speed governing valve 12.
Wherein, hydraulic control system is additionally provided with accumulator 19, pressure sensor 20.Accumulator 19 acts on：At hydraulic cylinder 3
When packing state, 10 off-load of oil pump, accumulator 19 is energized to system, ensures 3 pressure stability of hydraulic cylinder；Pressure sensor 20
Effect is：When hydraulic cylinder 3 needs long-time pressurize, the deficiency of accumulator 19 maintains 3 pressure stability of hydraulic cylinder, pressure sensor 20 to
PLC hosts 8 send signal, and PLC hosts 8 stop the off-load of oil pump 10, steering fuel feeding.
Hydraulic control system has following functions：
Speed-regulating function：It is made of oil pump 10, speed governing valve 12, flow divider-combiner 15 and hydraulic cylinder 3, by adjusting the mistake of speed governing valve 12
Flow section size, the speed of service of hydraulic cylinder 3 required by realization.
Synchronizing function：It is made of flow divider-combiner 15 and hydraulic cylinder 3, hydraulic cylinder 3 passes through when doing downlink and uplink movement
The average shunting of flow divider-combiner 15 or afflux function, realize that multiple hydraulic cylinders 3 are synchronous, ensure balance, the action of operating pressure
Unanimously.
Pressure holding function：By pressure sensor 20, check valve 18,3-position-3-way solenoid directional control valve 14, flow divider-combiner 15, liquid
Cylinder pressure 3 and accumulator 19 form, and when hydraulic cylinder 3, which is gone downwards to, limits pressure, 3-position-3-way solenoid directional control valve 14 is in interposition
Put, hydraulic cylinder 3 is in packing state.The effect of check valve 18 is：When hydraulic cylinder 3 is in packing state, prevent hydraulic oil from flowing back；
Accumulator 19 acts on：When hydraulic cylinder 3 is in packing state, 10 off-load of oil pump, accumulator 19 is energized to system, ensures hydraulic cylinder
3 pressure stabilitys；The effect of pressure sensor 20 is：When hydraulic cylinder 3 needs long-time pressurize, the deficiency of accumulator 19 maintains hydraulic cylinder
3 pressure stabilitys, pressure sensor 20 send signal to PLC hosts 8, and PLC hosts 8 stop the off-load of oil pump 10, and steering supplies
Oil.
Load releasing function：Hydraulic cylinder 3 is in packing state or during in off position, at 3-position-3-way solenoid directional control valve 14
In centre position, two-position two-way electromagnetic directional valve 13 turns on, 10 off-load of oil pump, reduces energy loss, improves the service life of pump, efficiency
It is high.
The process that hard alloy press-powder technique is carried out using this hydraulic press is as follows：
1）The motor 11 of startup：1YA solenoid valves, two-position two-way electromagnetic directional valve 13 are connected, 3-position-3-way solenoid directional control valve
14 is in an intermediate position, 10 off-load of oil pump.Fluid path：Two-position two-way electromagnetic directional valve 13 is flowed to from oil pump 10 by circuit,
Fuel tank 9 is flowed back to again.
2）Fill press-powder mould；The mould that will carry out press-powder is placed on movable plate 4.
3）If pressure value and dwell time；Input pressure value and dwell time on control panel 7.
4）Pressurize (hydraulic cylinder downlink)；1YA solenoid valves power off, and two-position two-way electromagnetic directional valve 13 is ended, and 2YA solenoid valves lead to
Electricity, 3-position-3-way solenoid directional control valve 14 are in left operating position.Fluid path：From oil pump 10 to speed governing valve 12, then to check valve
18, then by check valve 18 to 3-position-3-way solenoid directional control valve 14, flow divider-combiner 15 is arrived again afterwards, finally to 2 single-acting lists
Go out rod-type hydraulic cylinder 3.
5）Pressurize；1YA solenoid valves, two-position two-way electromagnetic directional valve 13 are connected, at 3-position-3-way solenoid directional control valve 14
In centre position, 10 off-load of oil pump.Fluid path：Two-position two-way electromagnetic directional valve 13 is flowed to from oil pump 10 by circuit, then is flowed
Oil return box 9.
6）Pressure release (hydraulic cylinder uplink)；1YA solenoid valves power off, and two-position two-way electromagnetic directional valve 13 is ended, and 3YA solenoid valves lead to
Electricity, 3-position-3-way solenoid directional control valve 14 are in right operating position.Fluid path：2 single-acting single-out lever hydraulic cylinders 3 arrive shunting
Combiner valve 15, then to 3-position-3-way solenoid directional control valve 14, finally flow back to fuel tank 9.
7）Stop；1YA solenoid valves, two-position two-way electromagnetic directional valve 13 are connected, at 3-position-3-way solenoid directional control valve 14
In centre position, 10 off-load of oil pump.Fluid path：Two-position two-way electromagnetic directional valve 13 is flowed to from 10 circuit of oil pump, is finally flowed back to
Fuel tank 9.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (10)
1. a kind of Novel oil hydraulic press, it is characterised in that including control cabinet（1）, the control cabinet（1）It is interior to be equipped with hydraulic control system
System, the control cabinet（1）It is equipped with some guide posts（2）, hydraulic cylinder（3）, the guide post（2）It is equipped with movable plate（4）, fixed plate
（5）, the hydraulic cylinder（3）With movable plate（4）Connection, the fixed plate（5）With guide post（2）Top be fixedly connected, the liquid
Pressure control system driving hydraulic cylinder（3）, hydraulic cylinder（3）Drive movable plate（4）Along guide post（2）Slide up and down.
A kind of 2. Novel oil hydraulic press according to claim 1, it is characterised in that the hydraulic cylinder（3）Arranged on control cabinet（1）
Center, the guide post（2）With hydraulic cylinder（3）Centered on be symmetricly set on control cabinet（1）Four corners on, the guide post
（2）It is each passed through movable plate（4）Four corners and fixed plate（5）Connection.
A kind of 3. Novel oil hydraulic press according to claim 2, it is characterised in that the fixed plate（5）With movable plate（4）It
Between guide post（2）On be cased with spring（6）.
A kind of 4. Novel oil hydraulic press according to claim 2, it is characterised in that the guide post（2）Top be equipped with screw rod,
The screw rod passes through fixed plate（5）Four corners be connected with nut.
A kind of 5. Novel oil hydraulic press according to claim 2, it is characterised in that the movable plate（4）With guide post（2）Connection
Place is equipped with guide sleeve.
6. a kind of Novel oil hydraulic press according to claim 1, it is characterised in that the hydraulic control system includes chain of command
Plate（7）, PLC hosts（8）, fuel tank（9）, oil pump（10）, motor（11）, speed governing valve（12）, two-position two-way electromagnetic directional valve（13）、
3-position-3-way solenoid directional control valve（14）, flow divider-combiner（15）, the PLC hosts（8）With control panel（7）, motor（11）, two
Two electric change valves of position（13）, 3-position-3-way solenoid directional control valve（14）It is electrically connected, the fuel tank（9）, oil pump（10）, speed governing valve
（12）, two-position two-way electromagnetic directional valve（13）, 3-position-3-way solenoid directional control valve（14）, flow divider-combiner（15）Between pass through oil pipe
Connection, the flow divider-combiner（15）With hydraulic cylinder（3）Connection；The motor（11）Drive oil pump（10）From fuel tank（9）Oil pumping
It is transported to speed governing valve（12）, speed governing valve（12）Pass through 3-position-3-way solenoid directional control valve（14）Oil is transported to flow divider-combiner
（15）, flow divider-combiner（15）Oil is transported to hydraulic cylinder（3）, in hydraulic cylinder（3）During in off position or packing state,
Two-position two-way electromagnetic directional valve（13）Arranged on oil pump（10）With fuel tank（9）Circuit on be used for oil pump（10）Off-load is carried out, is made
Oil is back to fuel tank（9）In.
7. a kind of Novel oil hydraulic press according to claim 6, it is characterised in that the hydraulic control system is additionally provided with electro-hydraulic
Digital phase-shift technology（16）, the electrohydraulic digital overflow valve（16）With two-position two-way electromagnetic directional valve（13）It is attempted by oil pump（10）With
Fuel tank（9）Circuit on.
A kind of 8. Novel oil hydraulic press according to claim 6, it is characterised in that the fuel tank（9）With oil pump（10）Between
Equipped with collecting filter（17）.
A kind of 9. Novel oil hydraulic press according to claim 6, it is characterised in that the speed governing valve（12）With 3-position-3-way electricity
Magnetic reversal valve（14）Between be equipped with check valve（18）.
10. a kind of Novel oil hydraulic press according to claim 6, it is characterised in that the hydraulic control system is additionally provided with storage
Can device（19）, pressure sensor（20）.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810027980.2A CN107983954A (en) | 2018-01-11 | 2018-01-11 | A kind of Novel oil hydraulic press |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810027980.2A CN107983954A (en) | 2018-01-11 | 2018-01-11 | A kind of Novel oil hydraulic press |
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Family
ID=62041038
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