CN107842530B - A kind of hydraulic system of high speed formed punch - Google Patents
A kind of hydraulic system of high speed formed punch Download PDFInfo
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- CN107842530B CN107842530B CN201711202856.7A CN201711202856A CN107842530B CN 107842530 B CN107842530 B CN 107842530B CN 201711202856 A CN201711202856 A CN 201711202856A CN 107842530 B CN107842530 B CN 107842530B
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- displacement pump
- hydraulic cylinder
- constant displacement
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
-
- 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
- F15B2211/2053—Type of pump
- F15B2211/20538—Type of pump constant capacity
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of hydraulic systems of high speed formed punch, it mainly include low pressure constant displacement pump, high pressure constant displacement pump, motor, low pressure sequences valve, high pressure sequence valve, the first check valve, second one-way valve, high pressure accumulator, low pressure accumulator, hydraulic control two-way valve, third check valve, tee joint machine-hydraulic servo, triple valve, connecting plate, formed punch hydraulic cylinder, tee joint machine-hydraulic servo mainly include three-way control valve, position feedback loop, spool driving hydraulic cylinder.The present invention has the function of that punching head machine-liquid servo commutation and high-low double pressure independently switch with load, may be implemented hydraulic punching head high speed stroke and fast run-up pressure, low energy consumption, punch stroke is adjustable, punching precision is high, and mesolow constant displacement pump, high pressure constant displacement pump, motor are integrated into power unit, and remaining component is integrated into execution unit, the pipeline of whole system is simple, integrated level is high, with good stability.
Description
Technical field
The present invention relates to a kind of hydraulic systems, more particularly to a kind of hydraulic system of high speed formed punch.
Background technique
High speed formed punch has very high for quickly charging and attacking out various shape, the hole of size or part on a metal plate
Working efficiency and biggish blanking pressure, therefore the fluid power system of high speed formed punch must have high speed stroke and fast run-up pressure energy
Power, in addition, how to optimize under the premise of quickly movement is exported with big blanking pressure in guarantee, reduce energy consumption is also in design high-speed punching
The critical issue that must be taken into consideration when the hydraulic system of head, otherwise not only results in the waste of the energy, adjoint heating problem can also
Lead to hydraulic system job insecurity to make the reliability decrease of high speed formed punch.
Summary of the invention
The purpose of the present invention is to provide a kind of hydraulic systems of high speed formed punch, can be realized formed punch and complete on a metal plate
It is efficient to charge and attack operation；The efficiency of simultaneity factor is high, fever is few, has excellent job stability.
Technical scheme is as follows:
The invention mainly comprises low pressure constant displacement pump, high pressure constant displacement pump, motor, low pressure sequences valve, high pressure sequence valves, first
Check valve, second one-way valve, high pressure accumulator, low pressure accumulator, hydraulic control two-way valve, third check valve, tee joint machine-liquid servo
Valve, triple valve, connecting plate, formed punch hydraulic cylinder.
Further, tee joint machine-hydraulic servo of the present invention mainly includes three-way control valve, position feedback loop, spool
Driving hydraulic cylinder, the spool of three-way control valve and the piston rod of spool driving hydraulic cylinder are connected as an entirety, position feedback loop
It is installed on the piston rod of spool driving hydraulic cylinder, position of the position feedback loop on spool driving hydraulic cylinder piston rod can adjust
Section.
Further, low pressure constant displacement pump of the present invention and the high pressure constant displacement pump are coaxial serial dual pump, the low pressure
The discharge capacity of constant displacement pump is greater than the discharge capacity of the high pressure constant displacement pump, and the motor drives the low pressure constant displacement pump and the height simultaneously
Press constant displacement pump.
Further, oil inlet, the height of the oil outlet of low pressure constant displacement pump of the present invention and the low pressure sequences valve
Press the oil inlet connection of the oil outlet, first check valve of sequence valve, the oil outlet of the high pressure constant displacement pump and the high pressure
The oil inlet connection of the oil inlet of sequence valve, the second one-way valve, the high pressure accumulator and the second one-way valve go out
Hydraulic fluid port, the control port of the high pressure sequence valve, the hydraulic control two-way valve A mouth connection, the low pressure accumulator with it is described low
Press the control port of sequence valve, the oil outlet of first check valve, a control mouth of the hydraulic control two-way valve, the third list
To the rod chamber of the oil inlet of valve, the P mouth of the triple valve, the formed punch hydraulic cylinder be connected to, B mouth of the hydraulic control two-way valve and
The P mouth connection of the oil outlet, the three-way control valve of the third check valve, the A mouth of the three-way control valve and the hydraulic control
The rodless cavity connection of the b control mouth of two-port valve, the formed punch hydraulic cylinder, A mouth and the spool of the triple valve drive hydraulic
The rodless cavity of cylinder is connected to, the oil inlet of the low pressure constant displacement pump, the oil inlet of the high pressure constant displacement pump, the low pressure sequences valve
Oil outlet, the T mouth of the three-way control valve, the triple valve T mouth be connected to hydraulic oil container.
Further, the valve port size of triple valve of the present invention can consecutive variations, the triple valve spool commutation when
Between be adjusted, have a machine feedback push rod on the spool of the triple valve, the triple valve also has reversing handle, has hand
Dynamic commutation function.
Further, formed punch hydraulic cylinder of the present invention is for driving formed punch, the piston rod of the formed punch hydraulic cylinder and institute
The cylinder body for stating spool driving hydraulic cylinder is connected as an entirety by the connecting plate, and the triple valve is fixedly installed in the valve
The cylinder body of core driving hydraulic cylinder, the piston rod of the formed punch hydraulic cylinder, the triple valve, the spool driving hydraulic cylinder cylinder body
Three moves together, and the machine feedback push rod of the triple valve can contact or be detached from the position feedback loop.
Beneficial effects of the present invention are as follows:
1, the present invention controls the commutation of formed punch hydraulic cylinder by machine-liquid servo mechanism, and the stroke for realizing formed punch high speed changes
To movement, and movement travel is adjustable.
2, it ensure that the rapidity for building pressure in the present invention with the low double pressure systems of height-that load variation independently switches, simultaneously
Optimize system energy efficiency.
3, the present invention does not need extraneous control intervention during the work time, and the high frequency time that can be realized high speed formed punch charges and attacks
Movement, low energy consumption, and fever is few, and use reliability is high.
4, integrated level of the present invention is high, is easily installed, safeguards and maintenance.
Detailed description of the invention
Fig. 1 is hydraulic principle schematic diagram of the invention.
Fig. 2 is tee joint machine-hydraulic servo schematic illustration in the present invention.
Fig. 3 is that the low pressure of hydraulic oil when the invention works quickly sweeps away the stage and flows to schematic diagram.
Fig. 4 is that the high pressure of hydraulic oil when the invention works sweeps away the stage and flows to schematic diagram.
Fig. 5 is to flow to schematic diagram in the backhaul stage of hydraulic oil when the invention works.
In Fig. 1: 1- low pressure constant displacement pump, 2- high pressure constant displacement pump, 3- motor, 4- low pressure sequences valve, 5- high pressure sequence valve, 6-
First check valve, 7- second one-way valve, 8- high pressure accumulator, 9- low pressure accumulator, 10- hydraulic control two-way valve, 11- third are unidirectional
Valve, 12- tee joint machine-hydraulic servo, 13- triple valve, 14- connecting plate, 15- formed punch hydraulic cylinder.
In Fig. 2: 12.1- three-way control valve, 12.2- position feedback loop, 12.3- spool driving hydraulic cylinder.
Specific embodiment
The present invention will be further described below with reference to the drawings.
Referring to Fig. 1, the invention mainly comprises: low pressure constant displacement pumps 1, high pressure constant displacement pump 2, motor 3, low pressure sequences valve 4, high
Press sequence valve 5, the first check valve 6, second one-way valve 7, high pressure accumulator 8, low pressure accumulator 9, hydraulic control two-way valve 10, third list
To valve 11, tee joint machine-hydraulic servo 12, triple valve 13, connecting plate 14, formed punch hydraulic cylinder 15.
Referring to fig. 2, tee joint machine-hydraulic servo 12 of the present invention specifically includes that three-way control valve 12.1, position feedback loop
12.2, the spool of spool driving hydraulic cylinder 12.3, three-way control valve 12.1 is connect with the piston rod of spool driving hydraulic cylinder 12.3
For an entirety, position feedback loop 12.2 is installed on the piston rod of spool driving hydraulic cylinder 12.3, and position feedback loop 12.2 exists
Position on 12.3 piston rod of spool driving hydraulic cylinder is adjustable.
Referring to Fig. 1, low pressure constant displacement pump 1 of the present invention is coaxial serial dual pump, the low pressure with the high pressure constant displacement pump 2
The discharge capacity of constant displacement pump 1 is greater than the discharge capacity of the high pressure constant displacement pump 2, and the motor 3 drives the low pressure constant displacement pump 1 and institute simultaneously
State high pressure constant displacement pump 2.
Referring to Fig. 1, Fig. 2, the oil inlet of the oil outlet of low pressure constant displacement pump 1 of the present invention and the low pressure sequences valve 4, institute
State the oil inlet connection of the oil outlet, first check valve 6 of high pressure sequence valve 5, the oil outlet of the high pressure constant displacement pump 2 and institute
State the oil inlet of high pressure sequence valve 5, the oil inlet connection of the second one-way valve 7, the high pressure accumulator 8 and second list
It is connected to the A mouth of the oil outlet of valve 7, the control port of the high pressure sequence valve 5, the hydraulic control two-way valve 10, the low pressure stores
Can device 9 and the control port of the low pressure sequences valve 4, the oil outlet of first check valve 6, the hydraulic control two-way valve 10 a
The rod chamber company of control mouth, the oil inlet of the third check valve 11, the P mouth of the triple valve 13, the formed punch hydraulic cylinder 15
It is logical, B mouth and the oil outlet of the third check valve 11, the P mouth company of the three-way control valve 12.1 of the hydraulic control two-way valve 10
It is logical, the b control mouth of the A mouth of the three-way control valve 12.1 and the hydraulic control two-way valve 10, the formed punch hydraulic cylinder 15 without bar
Chamber connection, the A mouth of the triple valve 13 are connected to the rodless cavity of the spool driving hydraulic cylinder 12.3, the low pressure constant displacement pump 1
Oil inlet, the oil inlet of the high pressure constant displacement pump 2, the oil outlet of the low pressure sequences valve 4, the three-way control valve 12.1
T mouthfuls, the T mouth of the triple valve 13 is connected to hydraulic oil container.
The valve port size of triple valve 13 of the present invention can consecutive variations, the spool commutating period of the triple valve 13 is adjustable
It saves, there is a machine feedback push rod on the spool of the triple valve 13, the triple valve 13 also has reversing handle, has manually
Commutation function.
Referring to Fig. 1, Fig. 2, formed punch hydraulic cylinder 15 of the present invention for driving formed punch, the piston rod of formed punch hydraulic cylinder 15 with
The cylinder body of the spool driving hydraulic cylinder 12.3 is connected as an entirety, the fixed peace of the triple valve 13 by the connecting plate 14
Cylinder body loaded on the spool driving hydraulic cylinder 12.3, piston rod, the triple valve 13, the valve of the formed punch hydraulic cylinder 15
The cylinder body three of core driving hydraulic cylinder 12.3 moves together, and the machine feedback push rod of the triple valve 13 can contact or be detached from institute
State position feedback loop 12.2.
Referring to Fig. 3-5, the course of work of the invention can be divided into that low pressure is quickly swept away, high pressure is swept away, backhaul three phases,
These three stages circuit sequentially progress.Heavy line indicates running of hydraulic power oil direction in Fig. 3-5.
Referring to Fig. 3-5, when low pressure quickly sweeps away the stage and starts, 15 piston of formed punch hydraulic cylinder is in up stroke terminal, liquid
Control two-port valve 10 is in off state, and high pressure accumulator 8 maintains the pressure of 5 control mouth of high pressure sequence valve, and high pressure sequence valve 5 is in
The machine feedback push rod of on state, 13 spool of triple valve is contacted with position feedback loop 12.2, and triple valve 13 is in P mouthfuls and A mouthfuls
With maximum open connection, the T mouthfuls of states ended, the piston rod of spool driving hydraulic cylinder 12.3 is completely out by hydraulic oil, threeway
Control valve 12.1 be in P mouthfuls be connected to A mouthfuls with maximum open, T mouthfuls cut-off states, because of the spool row of three-way control valve 12.1
Journey is far smaller than the stroke of formed punch hydraulic cylinder 15, thus the machine feedback push rod of 13 spool of triple valve and position feedback loop 12.2 this
Shi Buhui is detached from, and the rod chamber of formed punch hydraulic cylinder 15 is through third check valve 11, three-way control valve 12.1 and formed punch hydraulic cylinder
To form differential circuit, the hydraulic oil that high pressure constant displacement pump 2 exports is fixed by high pressure sequence valve 5 and low pressure for 15 rodless cavity connection
The hydraulic oil of 1 output of amount pump collaborates, and the hydraulic oil behind interflow enters differential time of formed punch hydraulic cylinder 15 by the first check valve 6
Road, formed punch not yet contact load, the piston rod of formed punch hydraulic cylinder 15 are stretched out at this time with prestissimo.
The stage is quickly swept away in low pressure, hydraulic oil has certain when flowing through third check valve 11, three-way control valve 12.1
The pressure loss, so for pressure slightly larger than at b control mouth, hydraulic control two-way valve 10 maintains cut-off at a control mouth of hydraulic control two-way valve 10
State.
The stage is quickly swept away in low pressure, the piston rod of formed punch hydraulic cylinder 15, triple valve 13, spool driving hydraulic cylinder 12.3
Cylinder body three moves downwardly together as a whole, and the machine feedback push rod of 13 spool of triple valve will be when moving downward one section
Between after with position feedback loop 12.2 be detached from, at this moment the spool of triple valve 13 pushes another working position to by spring, spool commutation
The state change of 13 valve port of triple valve in the process are as follows: P mouthfuls be connected to A mouthfuls with maximum open, T mouthfuls cut-off → P mouthfuls with A mouthfuls of connection
Opening is gradually reduced, T mouthful cut-off → P mouthful cut-offs, A mouthful be open with T mouthfuls of connection be gradually increased → P mouthfuls end, A mouthfuls and T mouthfuls with
Maximum open connection, because the spool commutation of triple valve 13 needs the throttling action of regular hour and valve port, spool driving
Pressure in 12.3 rodless cavity of hydraulic cylinder gradually decreases, therefore the commutation that the spool of three-way control valve 12.1 is pushed by spring
Process in a period of time also in gradually completing, rather than in the machine feedback push rod and position feedback of 13 spool of triple valve
Ring 12.2 commutates immediately when being detached from, the state change of 12.1 valve port of three-way control valve in spool commutation process are as follows: P mouthfuls and A mouthfuls
Be open with maximum open connection, T mouthful cut-off → P mouthful with A mouthfuls of connection be gradually reduced, T mouthfuls cut-off → P mouthfuls end, A mouthfuls and T mouthfuls
Connection opening be gradually increased → P mouthful end, A mouthfuls be connected to T mouthfuls with maximum open, three at the end of low pressure quickly sweeps away the stage
The state of logical 12.1 valve port of control valve be P mouthful be connected to A mouthfuls with smaller opening, T mouthfuls end, the state of 13 valve port of triple valve is P
Mouthful cut-off, A mouthfuls be connected to T mouthfuls with smaller opening.
When punch. contact workpiece, formed punch hydraulic cylinder 15 increases pressure in rodless cavity by load effect, of the invention
The course of work enters high pressure and sweeps away the stage.
Referring to Fig. 3-5, the stage is swept away in high pressure, pressure, which is higher than formed punch hydraulic cylinder 15, in 15 rodless cavity of formed punch hydraulic cylinder bar
Cavity pressure, then pressure is greater than at a control mouth at the b control mouth of hydraulic control two-way valve 10, and hydraulic control two-way valve 10 is switched to connection
State, hydraulic oil outflow causes the pressure of 5 control mouth of high pressure sequence valve decline in high pressure accumulator 8, the cut-off of high pressure sequence valve 5,
The hydraulic oil that high pressure constant displacement pump 2 exports flows into formed punch liquid by second one-way valve 7, hydraulic control two-way valve 10, three-way control valve 12.1
Low-pressure hydraulic oil is isolated with high pressure liquid pressure oil for the rodless cavity of cylinder pressure 15, third check valve 11, from 15 rod chamber of formed punch hydraulic cylinder
The hydraulic oil of outflow enters low pressure accumulator 9 and the pressure of 4 control mouth of low pressure sequences valve is made to increase, and low pressure sequences valve 4 is connected, low
The hydraulic oil that pressure constant displacement pump 1 exports directly flows back to fuel tank, and 12.1 valve port of three-way control valve is in P at the end of high pressure sweeps away the stage
Mouthful, A mouthful, near the T mouthful critical states being turned off, the state of 13 valve port of triple valve be P mouthfuls end, A mouthfuls and T mouthfuls are with maximum open
Connection.
When low pressure quickly sweeps away the stage and starts, liquid that hydraulic oil that high pressure constant displacement pump 2 exports, low pressure constant displacement pump 1 export
Pressure oil, the hydraulic oil flowed out from 15 rod chamber of formed punch hydraulic cylinder collaborate, and the hydraulic oil behind interflow flows through three-way control valve 12.1, this
When three-way control valve 12.1 valve port state be P mouthfuls be connected to A mouthfuls with maximum open；The stage is swept away in high pressure, only high pressure is quantitative
The hydraulic oil of 2 output of pump flows through three-way control valve 12.1, at this time the valve port state of three-way control valve 12.1 be P mouthful and A mouthfuls with compared with
Small open communication；The discharge capacity of high pressure constant displacement pump 2 is less than low pressure constant displacement pump 1.In conclusion threeway control in the course of work of the present invention
The open state of valve 12.1 processed is matched with the uninterrupted flowed through.
After formed punch completion charges and attacks, pressure is discharged in 15 rodless cavity of formed punch hydraulic cylinder, the course of work of the invention into
Enter the backhaul stage.
Referring to Fig. 3-5, when the backhaul stage starts, the valve port state of three-way control valve 12.1 is P mouthfuls of cut-offs, A mouthfuls and T mouthfuls
Connection opening be gradually increased, pressure is gradually shed in 15 rodless cavity of formed punch hydraulic cylinder, at the b control mouth of hydraulic control two-way valve 10
Pressure is less than hydraulic control two-way valve 10 when at a control mouth, and switchback off state, the hydraulic oil that high pressure constant displacement pump 2 exports are filled with height again
Accumulator 8, the control mouth pressure rise of high pressure sequence valve 5 are pressed, high pressure sequence valve 5 is connected again, the liquid that high pressure constant displacement pump 2 exports
The hydraulic oil that pressure oil is exported with low pressure constant displacement pump 1 collaborates again, and the hydraulic oil behind interflow is hydraulic into formed punch through the first check valve 6
The rod chamber of cylinder 15,15 piston rod of formed punch hydraulic cylinder are quickly withdrawn, and the hydraulic oil flowed out from 15 rodless cavity of formed punch hydraulic cylinder is through three
Logical control valve 12.1 flows back to fuel tank.
In the backhaul stage, the piston rod of formed punch hydraulic cylinder 15, triple valve 13, spool driving hydraulic cylinder 12.3 cylinder body three
Move upwardly together as a whole, the machine feedback push rod of 13 spool of triple valve will after moving upwards a period of time with position
It sets feedback loop 12.2 to contact again, the spool of triple valve 13 is pushed back original working position by machine feedback bar, at this moment triple valve 13
The state change of valve port are as follows: P mouthfuls of cut-offs, A mouthful be connected to maximum open with T mouthfuls → P mouthfuls end, A mouthfuls with T mouthfuls of connection be open by
Decrescence small → P mouthfuls be gradually increased with A mouthfuls of connection opening, T mouthful cut-off → P mouthfuls be connected to A mouthfuls with maximum open, T mouthfuls end, together
Sample is because the spool commutation of triple valve 13 needs the throttling action of regular hour and valve port, 12.3 nothing of spool driving hydraulic cylinder
Pressure in rod cavity gradually rises, therefore the spool of three-way control valve 12.1 gradually drives liquid by spool whithin a period of time
The piston rod of cylinder pressure 12.3 pushes back, rather than when the machine feedback push rod of 13 spool of triple valve and position feedback loop 12.2 contact
It commutates immediately, the state change of 12.1 valve port of three-way control valve in spool commutation process are as follows: P mouthfuls of cut-offs, A mouthfuls and T mouthfuls are with most
The cut-off of big opening connection → P mouthfuls, A mouthful be open with T mouthful be connected to be gradually reduced → P mouthfuls be open with A mouthfuls of connection be gradually increased, T
Mouthful cut-off → P mouthful be connected to A mouthfuls with maximum open, T mouthfuls end, the shape of 12.1 valve port of three-way control valve at the end of the backhaul stage
State be P mouthful be connected to A mouthfuls with maximum open, T mouthfuls end, the state of 13 valve port of triple valve is connected for P mouthfuls with A mouthfuls with maximum open
It is logical, T mouthful end, at this moment three-way control valve 12.1, triple valve 13 valve port state be that low pressure quickly sweeps away the stage when starting
State.
Stage and backhaul stage are quickly swept away in low pressure, the hydraulic oil that low pressure constant displacement pump 1 and high pressure constant displacement pump 2 export closes
Stream, system are in big flow, operating on low voltage state；The stage is swept away in high pressure, the complete release of low pressure constant displacement pump 1, only high pressure is quantitative
2 output hydraulic pressures oil is pumped, system is in small flow, high-pressure work state.By matching high and low pressure and low pressure constant displacement pump 1, high pressure
The discharge capacity of constant displacement pump 2 can make system power invariability in entire working cycle process, thus the redundancy of power is not present in system
Or waste.
High pressure accumulator 8 replace in entire efforts cyclic process with low pressure accumulator 9 fill, tapping pressure oil, into one
Step improves the movement velocity of formed punch hydraulic cylinder 15.
Formed punch hydraulic cylinder 15 back and forth to charge and attack stroke be by the spool machine feedback of position feedback loop 12.2 and triple valve 13
What the relative motion distance between push rod determined, this relative motion distance can be by adjusting position feedback loop 12.2 in spool
Position change on 12.3 piston rod of driving hydraulic cylinder.
The lasting reciprocating reversing movement of formed punch hydraulic cylinder 15 needs the change and threeway control of 15 direction of motion of formed punch hydraulic cylinder
Certain synchronization association is kept between the commutation of 12.1 spool of valve processed, the adjusting of this synchronization association is then by matching threeway
What the spool commutating period of valve 13 and valve port area gradient were realized.
The manual reverse of direction function of triple valve 13 is used for emergency disposal.
Mesolow constant displacement pump of the present invention, high pressure constant displacement pump, motor can be integrated into power unit, and remaining component can be integrated into
Execution unit, pipeline is simple between power unit and execution unit.Whole system integrated level is high, and installation, removal and replacement is convenient,
Be conducive to the maintenance and maintenance of system.
Claims (2)
1. a kind of hydraulic system of high speed formed punch, it is characterized in that: mainly including low pressure constant displacement pump (1), high pressure constant displacement pump (2), electricity
Motivation (3), low pressure sequences valve (4), high pressure sequence valve (5), the first check valve (6), second one-way valve (7), high pressure accumulator
(8), low pressure accumulator (9), hydraulic control two-way valve (10), third check valve (11), tee joint machine-hydraulic servo (12), triple valve
(13), connecting plate (14), formed punch hydraulic cylinder (15)；The low pressure constant displacement pump (1) is coaxial connect with the high pressure constant displacement pump (2)
Double pump, the discharge capacity of the low pressure constant displacement pump (1) are greater than the discharge capacity of the high pressure constant displacement pump (2), and the motor (3) drives simultaneously
The low pressure constant displacement pump (1) and the high pressure constant displacement pump (2)；The oil outlet and the low pressure sequences of the low pressure constant displacement pump (1)
The oil inlet connection of the oil inlet of valve (4), the oil outlet of the high pressure sequence valve (5), first check valve (6), the height
The oil outlet of pressure constant displacement pump (2) is connected to the oil inlet of the oil inlet of the high pressure sequence valve (5), the second one-way valve (7),
It is the control port of the high pressure accumulator (8) and the oil outlet, the high pressure sequence valve (5) of the second one-way valve (7), described
The A mouth of hydraulic control two-way valve (10) is connected to, the control port of the low pressure accumulator (9) and the low pressure sequences valve (4), described the
The oil outlet of one check valve (6), a control mouth of the hydraulic control two-way valve (10), the oil inlet of the third check valve (11), institute
State the rod chamber connection of the P mouth, the formed punch hydraulic cylinder (15) of triple valve (13), the B mouth of the hydraulic control two-way valve (10) and institute
The P mouth connection of the oil outlet of third check valve (11), the three-way control valve (12.1) of tee joint machine-hydraulic servo (12) is stated, it is described
The A mouth of three-way control valve (12.1) and the b control mouth of the hydraulic control two-way valve (10), the rodless cavity of the formed punch hydraulic cylinder (15)
The rodless cavity of connection, the spool driving hydraulic cylinder (12.3) of the A mouth and tee joint machine-hydraulic servo (12) of the triple valve (13) connects
Logical, the oil inlet of the low pressure constant displacement pump (1), the oil inlet of the high pressure constant displacement pump (2), the low pressure sequences valve (4) go out
Hydraulic fluid port, the T mouth of the three-way control valve (12.1), the triple valve (13) T mouth be connected to hydraulic oil container；The tee joint machine-
Hydraulic servo (12) mainly include three-way control valve (12.1), position feedback loop (12.2), spool driving hydraulic cylinder (12.3), three
The spool of logical control valve (12.1) and the piston rod of spool driving hydraulic cylinder (12.3) are connected as an entirety, position feedback loop
(12.2) it is installed on the piston rod of spool driving hydraulic cylinder (12.3), position feedback loop (12.2) is in spool driving hydraulic cylinder
(12.3) it is adjusted on piston rod；The formed punch hydraulic cylinder (15) is for driving formed punch, the work of the formed punch hydraulic cylinder (15)
Stopper rod and the cylinder body of the spool driving hydraulic cylinder (12.3) are connected as an entirety, the threeway by the connecting plate (14)
Valve (13) is fixedly installed in the cylinder body of the spool driving hydraulic cylinder (12.3), the piston rod of the formed punch hydraulic cylinder (15), institute
State triple valve (13), the cylinder body three of the spool driving hydraulic cylinder (12.3) moves together, the machinery of the triple valve (13)
The contact of feedback push rod is detached from the position feedback loop (12.2).
2. a kind of hydraulic system of high speed formed punch according to claim 1, it is characterised in that: the valve of the triple valve (13)
Mouthful size can consecutive variations, the spool commutating period of the triple valve (13) is adjustable, has on the spool of the triple valve (13)
One machine feedback push rod, the triple valve (13) also have reversing handle, have manual reverse of direction function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711202856.7A CN107842530B (en) | 2017-11-27 | 2017-11-27 | A kind of hydraulic system of high speed formed punch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711202856.7A CN107842530B (en) | 2017-11-27 | 2017-11-27 | A kind of hydraulic system of high speed formed punch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107842530A CN107842530A (en) | 2018-03-27 |
| CN107842530B true CN107842530B (en) | 2019-05-31 |
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| CN201711202856.7A Active CN107842530B (en) | 2017-11-27 | 2017-11-27 | A kind of hydraulic system of high speed formed punch |
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| CN114951628B (en) * | 2021-02-24 | 2024-04-05 | 宝山钢铁股份有限公司 | Continuous casting immersion nozzle clamping system and method |
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| JPH0826088A (en) * | 1994-07-08 | 1996-01-30 | Mando Mach Corp | Anti skid control device for vehicle |
| JPH08135607A (en) * | 1994-11-08 | 1996-05-31 | Shin Caterpillar Mitsubishi Ltd | Hydraulic pilot circuit for control valve |
| CN2808533Y (en) * | 2005-08-12 | 2006-08-23 | 上海欣昶鑫企业发展有限公司 | Hydraulic press with instant voltage build-up function |
| CN101121303A (en) * | 2007-08-10 | 2008-02-13 | 广东工业大学 | Hydraulic press punching active damping control device |
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| CN107842530A (en) | 2018-03-27 |
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