CN205588677U - Interior high -pressure forming machine of variable mold clamping force - Google Patents
Interior high -pressure forming machine of variable mold clamping force Download PDFInfo
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- CN205588677U CN205588677U CN201620323260.7U CN201620323260U CN205588677U CN 205588677 U CN205588677 U CN 205588677U CN 201620323260 U CN201620323260 U CN 201620323260U CN 205588677 U CN205588677 U CN 205588677U
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Abstract
The utility model discloses an interior high -pressure forming machine of variable mold clamping force, including fuselage, hydraulic system and filling liquid system, fuselage upper portion is equipped with long stroke cylinder, and the front end of its piston rod is connected with the top shoe, the lower surface mounting of top shoe goes up the mould, the fuselage bottom is equipped with short stroke cylinder, short stroke cylinder includes a plunger cylinder and four auxiliary piston hydro -cylinders plunger cylinder's plunger upper end and four the last surface mounting lower mould of slider down, lower slider is installed to the piston rod upper end of auxiliary piston hydro -cylinder, install the horizontal location hydro -cylinder on the left and right sides wall on fuselage upper portion respectively, its piston rod front end installation locating piece, install axial feed supplement feed cylinder on the wall of the fuselage lower part left and right sides respectively, the drift is sealed in axial feed supplement feed cylinder's piston rod front end installation, filling liquid system is equipped with the pressurized cylinder, the utility model discloses can make the mold clamping force follow the inside highly compressed change of tubular product and change according to given loading curve, improve take shape part quality and production efficiency.
Description
Technical field
This utility model relates to a kind of internal high-pressure forming machine, particularly to the internal high-pressure forming machine of a kind of variable mold clamping force.
Background technology
At present, hydroforming technology is using highly pressurised liquid as medium, utilize pipe fitting two ends axial supplement centripetal force and
The common effect of tubing internal high pressure bulging makes a kind of novel processing technology skill that pipe fitting is configured to required form in a mold
Art.This manufacturing process has relative to traditional forming methods and alleviates workpiece weight, improves stock utilization and reduction and be manufactured into
This etc. a series of advantage.
Internal high-pressure forming machine is the equipment realizing pipe internal high pressure forming, mainly includes clamping pressure machine, axial feed feed supplement
Oil cylinder, high-voltage power supply, hydraulic system, hydraulic pressure system and control system.Clamping pressure machine is high in realizing mould opening and closing and providing
Mold clamping force during pressing formation, axial feed feed supplement oil cylinder realizes sealing and axial supplement feeding, the high pressure of two terminations of pipe
Source provides superhigh pressure liquid, and control system realizes the control to whole system.
Traditional forming high pressure in pipe machine is essentially all and utilizes common hydraulic press to provide mold clamping force, in forming process all the time
Apply maximum clamping force.For large-tonnage internal high-pressure forming machine, this clamping system needs clamping pressure captain's time
Be in high pressure conditions, not only can serious waste hydraulic energy, also each Hydraulic Elements can be caused certain infringement.Shaping
At the process initial stage, tubing internal liquid pressure is the lowest, and maximum clamping force acts on upper/lower die contact surface the most completely, because of
This needs the design size of mould very greatly, and long-term work can cause the deformation and failure of mould, increases being manufactured into of mould
This.Meanwhile, it is big with die surface frictional force that constant maximum clamping force often results in pipe, makes tubing part feed supplement, walks
Material difficulty, makes thin-walled, deforms big, complex-shaped part and easily produce and rupture, reduce quality and the life of formation of parts
Produce efficiency.Traditional internal high-pressure forming machine, in forming process, remains maximum clamping force, causes energy waste, mould
Tool deformation and failure so that product quality and production efficiency are low.
Summary of the invention
This utility model provides the internal high pressure forming of a kind of variable mold clamping force for solving technical problem present in known technology
Machine.
This utility model is adopted the technical scheme that by solving technical problem present in known technology: a kind of variable matched moulds
The internal high-pressure forming machine of power, including fuselage, hydraulic system and hydromechanical system, described fuselage include entablature, sill and
Four root posts, described back is provided with Long travel oil cylinder, and the front end of the piston rod of described Long travel oil cylinder connects upper cunning
Block, the lower surface installation upper mold of described top shoe, described top shoe is guided by described four root posts；At the bottom of described fuselage
Portion is provided with short stroke oil cylinder, and described short stroke oil cylinder includes a plunger cylinder and four auxiliary piston oil cylinders, at described post
Sliding block is installed in the piston rod upper end of the plug its upper end of oil cylinder and four described auxiliary piston oil cylinders, described sliding block upper
Lower mold is installed on surface；Described sliding block is guided by described four root posts；Divide on the left and right sides wall of described back
An Zhuan horizontal location oil cylinder；Locating piece is installed in the piston rod front end of described horizontal location oil cylinder；A left side for described underbelly
Being respectively mounted axial supplement feed cylinder on right two side, wherein left side is left axial supplement feed cylinder, and right side is right axle
To feed supplement feed cylinder, sealing punch is installed in the piston rod front end of described axial supplement feed cylinder；Described hydromechanical system sets
Pressurized cylinder, described pressurized cylinder is had to include high pressure chest and low pressure chamber；The described hydraulic system supply described Long travel oil cylinder of driving,
Described short stroke oil cylinder, described horizontal location oil cylinder, described axial supplement feed cylinder and the working media of described pressurized cylinder,
The rodless cavity inlet and outlet of fuel channel of described plunger cylinder and described four auxiliary piston oil cylinders connects three-level electrohydraulic servo valve.
Further, described hydraulic system includes the first hydraulic system and the second hydraulic system, described first hydraulic system by
Constant pressure variable displacement pump supply drives described Long travel oil cylinder, described short stroke oil cylinder and the working media of described horizontal location oil cylinder；
Described second hydraulic system is driven described axial supplement feed cylinder and the work of described pressurized cylinder by the supply of described load sensitive pump
Make medium.
Further, the rod chamber inlet and outlet of fuel channel of described four auxiliary piston oil cylinders connects decompression-overflow valve group.
Further, the inlet and outlet of fuel channel of described Long travel oil cylinder connects electro-hydraulic proportional valve.
Further, the oil circuit between oil inlet and outlet and the described electro-hydraulic proportional valve of the rod chamber of described Long travel oil cylinder connects
Connect trimmer valve group.
Further, the oil inlet and outlet of described left axial supplement feed cylinder is sequentially connected with two grades of electrohydraulic servo valve A and left two
Position four-way electro-hydraulic reversing valve, the oil inlet and outlet of described right axial supplement feed cylinder be sequentially connected with two grades of electrohydraulic servo valve B and
Right two four-way electro-hydraulic reversing valves.
Further, the oil inlet and outlet of the low pressure chamber of described pressurized cylinder is sequentially connected with two grades of electrohydraulic servo valve C and two four-ways
Solenoid directional control valve.
Further, described constant pressure variable displacement pump inlet port connects fuel tank A, and oil-out is sequentially connected with check valve A and filtration
Device A.
Further, the inlet port of described load sensitive pump connects fuel tank B, and oil-out is sequentially connected with check valve B, filtration
Device B, stop valve and accumulator.
This utility model has the advantage that with good effect:
1, internal high-pressure forming machine mold clamping force passes through servo valve close-loop control mode, makes mold clamping force with the change of inside pipe fitting high pressure
And be gradually increased, it is ensured that in forming process, variable mold clamping force acts on the difference of the power on mould all the time with inside pipe fitting pressure
For a certain setting value or scope, in the case of ensureing mould tight closure, both avoided the waste of the energy, made again up and down
Interaction force between mould is little.
2, in forming process, the interaction force between upper/lower die remains between a certain setting value or scope, from
And the size of Design of Dies can be reduced and avoid the deformation and failure of mould, make again the friction between pipe and die surface
Power reduce, for thin-walled, deform big, complex-shaped part for be easier to shape, improve the quality of formation of parts
And production efficiency.
3, short stroke oil cylinder uses a big plunger cylinder and four little auxiliary piston oil cylinder combinations, and servo valve only controls
Plunger cylinder and four auxiliary piston oil cylinder cavity of resorptions, piston cylinder epicoele connects decompression-overflow valve group, it is to avoid servo valve commutation
Time short stroke oil cylinder the upper cavity pressure big problem of fluctuation.When lower mold is up, short stroke oil cylinder epicoele has a constant back of the body
Pressure, makes motion more steady, during lower mold backhaul, mainly by lower mold, sliding block is estimated one's own ability and piston cylinder epicoele is constant pressure
Drive lower mold is descending.
Accompanying drawing explanation
Fig. 1 is the structural representation of original state before this utility model internal high-pressure forming machine matched moulds；
Fig. 2 is the structural representation during this utility model internal high-pressure forming machine matched moulds postforming；
Fig. 3 is this utility model internal high-pressure forming machine hydraulic system principle figure；
Fig. 4 is the hydraulic system principle figure driving short stroke cylinder to work in this utility model；
Fig. 5 is internal high pressure forming mold clamping force and inner high voltage loading curve schematic diagram.
In figure: 1, motor A；2, constant pressure variable displacement pump (setting 25MPa)；3, check valve A；4, filter A；5、
Safety overflow valve A；6, air relief valve A (setting 16MPa)；7, fuel tank A；8, inserted valve group；9, air relief valve B (sets
Determine 2MPa)；10, three-level electrohydraulic servo valve；11, auxiliary piston oil cylinder (totally four)；12, overflow valve (setting 2.5MPa)；
13, plunger cylinder；14, sliding block；15, two grades of electrohydraulic servo valve B；16, right two four-way electro-hydraulic reversing valves；17、
Right axial supplement feed cylinder；18, right sealing punch；19, right 3-position 4-way electro-hydraulic reversing valve；20, right horizontal location
Oil cylinder；21, right locating piece；22, trimmer valve group；23, electro-hydraulic proportional valve；24, Long travel oil cylinder；25, top shoe；
26, left 3-position 4-way electro-hydraulic reversing valve；27, left horizontal location oil cylinder；28, left locating piece；29, two grades of electro-hydraulic servos
Valve A；30, left two four-way electro-hydraulic reversing valves；31, left axial supplement feed cylinder；32, left sealing punch；33, pipe
Base；34, two grades of electrohydraulic servo valve C；35, two four-way electromagnetic reversing valves；36, pressurized cylinder；37, accumulator；38、
Stop valve；39, fuel tank B；40, filter B；41, motor B；42, load sensitive pump (setting 25MPa)；43、
Check valve B；44, safety overflow valve B；45, sill；46, lower mold；47, upper mold；48, entablature；49, vertical
Post；50, hydromechanical system；51, hydraulic system；52, control system；F, mold clamping force；Ps, for hydraulic system pumping source pressure
Power.
Detailed description of the invention
For summary of the invention of the present utility model, feature and effect can be further appreciated that, hereby enumerate following example, and coordinate
Accompanying drawing describes in detail as follows:
Referring to Fig. 1～Fig. 5, the internal high-pressure forming machine of a kind of variable mold clamping force, including fuselage, hydraulic system 51 with fill
Liquid system 50, and control system 52, described fuselage includes entablature 45, sill 48 and four root posts 49, described
Back is provided with Long travel oil cylinder 24, and the front end of the piston rod of described Long travel oil cylinder 24 connects top shoe 25, institute
The lower surface stating top shoe 25 installs upper mold 47, and described top shoe 25 is guided by four root posts 49；At the bottom of described fuselage
Portion is provided with short stroke oil cylinder, and described short stroke oil cylinder includes a plunger cylinder 13 and four auxiliary piston oil cylinders 11, wherein
Plunger cylinder 13 is main, and four auxiliary piston oil cylinders 11 are less than plunger cylinder 13, at the plunger of described plunger cylinder 13
Sliding block 14, the upper surface of described sliding block 14 are installed in the piston rod upper end of upper end and four described auxiliary piston oil cylinders 11
Installing lower mold 46, described sliding block is guided by four root posts 49；Four auxiliary piston oil cylinders 11 are at sliding block 14
Corner is uniformly distributed, and the upper surface of sliding block 14 installs lower mold 46, and sliding block 14 is guided by four root posts 49；Institute
State and on the left and right sides wall of back, be respectively mounted horizontal location oil cylinder, the most left horizontal location oil cylinder 27 and right level
Positional cylinder 20；Locating piece, the work of the most left horizontal location oil cylinder 27 are installed in the piston rod front end of described horizontal location oil cylinder
Left locating piece 28 is installed in stopper rod front end, and right locating piece 21 is installed in the piston rod front end of right horizontal location oil cylinder 20；Described machine
Being respectively mounted axial supplement feed cylinder on the left and right sides wall of body bottom, wherein left side is left axial supplement feed cylinder 31,
Right side is right axial supplement feed cylinder 17, and sealing punch is installed in the piston rod front end of described feed supplement feed cylinder, wherein left
Left sealing punch 32, the piston of right axial supplement feed cylinder 17 are installed in the piston rod front end of axial supplement feed cylinder 31
Right sealing punch 18 is installed in bar front end；Described hydromechanical system 50 is provided with pressurized cylinder 36；The supply of described hydraulic system 51 drives
Described Long travel oil cylinder 24, described short stroke oil cylinder, described horizontal location oil cylinder, described axial supplement feed cylinder and institute
State the working media of pressurized cylinder 36, the rodless cavity turnover oil of described plunger cylinder 13 and described four auxiliary piston oil cylinders 11
Road connects three-level electrohydraulic servo valve 10；Described pressurized cylinder 36 includes high pressure chest and low pressure chamber；Wherein high pressure chest output high pressure
In working media extremely pipe 33 to be processed, described low pressure chamber is divided into two chambeies by piston, with the work of hydraulic system 51 supply
Communicate as medium, by the movement of piston, make high pressure chest working medium pressure raise.
Further, described hydraulic system 51 can include the first hydraulic system and the second hydraulic system, described first hydraulic pressure system
System can be supplied the described Long travel oil cylinder 24 of driving, described short stroke oil cylinder and described horizontal location oil cylinder by constant pressure variable displacement pump 2
Working media；Described second hydraulic system can be supplied the described axial supplement feed cylinder of driving by described load sensitive pump 42
Working media with described pressurized cylinder 36.Constant pressure variable displacement pump 2 is driven by motor A 1；Load sensitive pump 42 is by motor B 41
Drive.
Further, the rod chamber inlet and outlet of fuel channel of described four auxiliary piston oil cylinders 11 can connect decompression-overflow valve group.
Decompression-overflow valve group can be combined by overflow valve 12, air relief valve A 6 and air relief valve B 9.
Further, the inlet and outlet of fuel channel of described Long travel oil cylinder 24 can connect electro-hydraulic proportional valve 23.
Further, the oil inlet and outlet of the rod chamber of described Long travel oil cylinder 24 can and described electro-hydraulic proportional valve 23 between
Oil circuit connects trimmer valve group 22.
Further, the oil inlet and outlet of described left axial supplement feed cylinder 31 can be sequentially connected with two grades of electrohydraulic servo valve A29
With left two four-way electro-hydraulic reversing valves 30, the oil inlet and outlet of described right axial supplement feed cylinder 17 can be sequentially connected with two grades
Electrohydraulic servo valve B 15 and right two four-way electro-hydraulic reversing valves 16.
Further, the oil inlet and outlet of the low pressure chamber of described pressurized cylinder 36 can be sequentially connected with two grades of electrohydraulic servo valve C 34 Hes
Two four-way electromagnetic reversing valves 35.
Further, the inlet port of described constant pressure variable displacement pump 2 connects fuel tank A 7, and oil-out can be sequentially connected with check valve A 3
With filter A 4, attachment security overflow valve A 5 between check valve A 3 and filter A 4.After filter A 4
Connect inserted valve group 8.
Further, the inlet port of described load sensitive pump 42 connects fuel tank B 39, and oil-out can be sequentially connected with check valve B
43, filter B 40, stop valve 38 and accumulator 37.Attachment security between check valve B 43 and filter B 40
Overflow valve B 44.
Control system 52 output signal controls above-mentioned motor and the work of various electric drive valve element.
Specifically as a example by 50MN internal high-pressure forming machine, further describe groundwork process of the present utility model as follows:
(1) first, internal high-pressure forming machine is in home position, and upper mold 47 is in topmost, and lower mold 46 is in bottom,
Left positioning sliding block 28, right positioning sliding block 21 are respectively at left and right end home position, and left sealing punch 32, right sealing are rushed
18 are respectively at left and right end home position, are put in lower mold 46 by the pipe 33 handled well with mechanical hand.
(2) the matched moulds stage, under the position-force control of electro-hydraulic proportional valve 23 and the co-controlling of trimmer valve group 22, make
Mould 47 realizes the downward movement of acceleration-at the uniform velocity-deceleration, completes without impact matched moulds, then by the pressure of electro-hydraulic proportional valve 23
Power closed loop control applies the preform pressure of 1500KN to top shoe 25, and left 3-position 4-way electro-hydraulic reversing valve 26 controls left water
The left locating piece 28 of flat positional cylinder 27 pushes between entablature 48 and top shoe 25, right 3-position 4-way electro-hydraulic reversing valve
19 control the right locating piece 21 of right horizontal location oil cylinder 20 pushes between entablature 48 and top shoe 25, locks upper mold 47,
Then electro-hydraulic proportional valve 23 controls release preform pressure, and making top shoe 25 is suspended state；Short stroke oil cylinder is (by one
Individual big plunger cylinder 13 and four little auxiliary piston oil cylinders 11 form) in the closed loop control of three-level electrohydraulic servo valve 10
Under up and be pressurized to certain pressure.
(3) topping up stage, left two electro-hydraulic reversing valves 30 and right two electro-hydraulic reversing valves 16 are energized, and make left axial supplement enter
Connect with right axial supplement feed cylinder 17 oil circuit to oil cylinder 31, two grades of electrohydraulic servo valve A29 and two grades of electrohydraulic servo valves
B15 closed loop control respectively left axial supplement feed cylinder 31 and right axial supplement feed cylinder 17 advance on request, make left close
Envelope drift 32 and right sealing punch 18 block pipe 33 two ends, and apply certain pressure, and hydromechanical system is to pipe 33
In quick topping up be pressurized to certain pressure.
(4) shaping and truing phase, two four-way electromagnetic reversing valves 35 are energized, and make pressurized cylinder 36 oil circuit connect, two grades of electricity
Hydraulic servo 34 carries out pressure closed loop control to pressurized cylinder 36 so that it is the inside increasing pipe 33 by certain loading curve is high
Pressure, three-level electrohydraulic servo valve 10 carries out pressure closed loop control to short stroke oil cylinder, makes mold clamping force F internal high with pipe 33
Pressure change and be gradually increased, it is ensured that in forming process, variable mold clamping force F acts on mould than pipe 33 internal pressure all the time
Big 2000kN～3000kN of power on tool, between internal high-pressure forming machine mold clamping force and inner high voltage, relation is as shown in Figure 5；Protecting
In the case of card mould tight closure, the active force between upper and lower mould is little, and two grades of electrohydraulic servo valve 29A and two grades electro-hydraulic are watched
Take valve 15B closed loop and respectively left axial supplement feed cylinder 31 and right axial supplement feed cylinder 17 are carried out pressure closed loop control
System so that it is by certain loading curve feeding feed supplement, it is ensured that complete feeding in the case of the sealing of pipe 33 two ends is the most intact and mend
Material；Until after pipe 33 internal high pressure reaches desired value, continuation pressurize a period of time carries out shaping.
(5) release and die sinking stage, the power-off of two four-way electromagnetic reversing valves 35, lock pressurized cylinder 36 oil circuit control, short row
Journey oil cylinder, left axial supplement feed cylinder 31 and right axial supplement feed cylinder 17 respectively three-level electrohydraulic servo valve 10,
Under the pressure closed loop of two grades of electrohydraulic servo valve A 29 and two grades of electrohydraulic servo valve B 15 controls, ensureing the situation of not die sinking
Under make the gradually blood pressure lowering of inside pipe fitting high-pressure emulsion and flow out, until short stroke oil cylinder and inside pipe fitting emulsifying from pipe fitting two ends
The complete release of liquid.After release, two grades of electrohydraulic servo valve A 29 and two grades of electrohydraulic servo valve B 15 control left axial respectively
Feed supplement feed cylinder 31 and right axial supplement feed cylinder 17 return home position, left two electro-hydraulic reversing valves 30 and right two
Position electro-hydraulic reversing valve 16 power-off, oil circuit is locked；Short stroke oil cylinder backhaul, lower mold 46, sliding block 14 estimate one's own ability and four
Individual auxiliary piston oil cylinder 11 epicoele, under the effect of the constant pressure (2MPa) of air relief valve 9, utilizes three-level electrohydraulic servo valve
10 pairs of short stroke oil cylinders carry out position-force control so that it is return to home position by certain loading curve；Left 3-position 4-way electricity
Liquid reversal valve 26 and right 3-position 4-way electro-hydraulic reversing valve 19 control left horizontal location oil cylinder 27 and right horizontal location oil cylinder respectively
20 return to home position, then under the position-force control of electro-hydraulic proportional valve 23 and the co-controlling of trimmer valve group 22,
Make upper mold 47 realize the drawback movement of acceleration-at the uniform velocity-deceleration, complete to return to home position without impact.
(6) last, utilize mould shaft to eject shaping pipe fitting, and utilize mechanical hand to be taken away by shaping pipe fitting.
Operation principle of the present utility model:
Internal high-pressure forming machine mold clamping force uses servo valve control, and servo valve only controls plunger cylinder and four auxiliary piston oil
Cylinder cavity of resorption, piston cylinder epicoele connects decompression-overflow valve group (air relief valve sets 2MPa, and overflow valve 12 sets 2.5MPa), protects
Demonstrate,prove short stroke cylinder up time epicoele have constant back pressure 2.5MPa.During short stroke cylinder backhaul, mainly by lower mold, downslide
The deadweight of block and the constant pressure of piston cylinder epicoele 2MPa drive short stroke oil cylinder descending.In forming process, pass through servo
Valve close-loop control mode, makes mold clamping force be gradually increased with the change of inside pipe fitting high pressure, it is ensured that variable in forming process
Mold clamping force 2000kN～3000kN bigger than the power that inside pipe fitting pressure acts on mould all the time, both can make upper/lower die tight
Guan Bi, can guarantee that again the active force between upper/lower die is little.
Embodiment described above is merely to illustrate technological thought of the present utility model and feature, its object is to make this area
Interior skilled artisan will appreciate that content of the present utility model and implements according to this, it is impossible to only limit this practicality with the present embodiment
Novel the scope of the claims, what the spirit disclosed in the most all this utility model was made changes on an equal basis or modifies, and still falls in this practicality
In novel the scope of the claims.
Claims (9)
1. the internal high-pressure forming machine of a variable mold clamping force, it is characterized in that, including fuselage, hydraulic system and hydromechanical system, described fuselage includes entablature, sill and four root posts, described back is provided with Long travel oil cylinder, the front end of the piston rod of described Long travel oil cylinder connects top shoe, and the lower surface of described top shoe installs upper mold, and described top shoe is guided by described four root posts；Described fuselage bottom is provided with short stroke oil cylinder, described short stroke oil cylinder includes a plunger cylinder and four auxiliary piston oil cylinders, at its upper end of described plunger cylinder and the piston rod upper end of four described auxiliary piston oil cylinders, sliding block is installed, the upper surface of described sliding block installs lower mold, and described sliding block is guided by described four root posts；It is respectively mounted horizontal location oil cylinder on the left and right sides wall of described back；Locating piece is installed in the piston rod front end of described horizontal location oil cylinder；Being respectively mounted axial supplement feed cylinder on the left and right sides wall of described underbelly, wherein left side is left axial supplement feed cylinder, and right side is right axial supplement feed cylinder, and sealing punch is installed in the piston rod front end of described axial supplement feed cylinder；Described hydromechanical system is provided with pressurized cylinder, and described pressurized cylinder includes high pressure chest and low pressure chamber；The supply of described hydraulic system drives described Long travel oil cylinder, described short stroke oil cylinder, described horizontal location oil cylinder, described axial supplement feed cylinder and the working media of described pressurized cylinder, connects three-level electrohydraulic servo valve in the rodless cavity inlet and outlet of fuel channel of described plunger cylinder and described four auxiliary piston oil cylinders.
The internal high-pressure forming machine of variable mold clamping force the most according to claim 1, it is characterized in that, described hydraulic system includes the first hydraulic system and the second hydraulic system, and described first hydraulic system is driven described Long travel oil cylinder, described short stroke oil cylinder and the working media of described horizontal location oil cylinder by constant pressure variable displacement pump supply；Described second hydraulic system is driven described axial supplement feed cylinder and the working media of described pressurized cylinder by load sensitive pump supply.
The internal high-pressure forming machine of variable mold clamping force the most according to claim 1, it is characterised in that connect decompression-overflow valve group in the rod chamber inlet and outlet of fuel channel of described four auxiliary piston oil cylinders.
The internal high-pressure forming machine of variable mold clamping force the most according to claim 1, it is characterised in that connect electro-hydraulic proportional valve in the inlet and outlet of fuel channel of described Long travel oil cylinder.
The internal high-pressure forming machine of variable mold clamping force the most according to claim 4, it is characterised in that be connected trimmer valve group in the oil circuit between the oil inlet and outlet of the rod chamber of described Long travel oil cylinder and described electro-hydraulic proportional valve.
The internal high-pressure forming machine of variable mold clamping force the most according to claim 1, it is characterized in that, the oil inlet and outlet of described left axial supplement feed cylinder is sequentially connected with two grades of electrohydraulic servo valve A and left two four-way electro-hydraulic reversing valves, and the oil inlet and outlet of described right axial supplement feed cylinder is sequentially connected with two grades of electrohydraulic servo valve B and right two four-way electro-hydraulic reversing valves.
The internal high-pressure forming machine of variable mold clamping force the most according to claim 1, it is characterised in that the oil inlet and outlet of the low pressure chamber of described pressurized cylinder is sequentially connected with two grades of electrohydraulic servo valve C and two four-way electromagnetic reversing valves.
The internal high-pressure forming machine of variable mold clamping force the most according to claim 2, it is characterised in that described constant pressure variable displacement pump inlet port connects fuel tank A, and oil-out is sequentially connected with check valve A and filter A.
The internal high-pressure forming machine of variable mold clamping force the most according to claim 2, it is characterised in that the inlet port of described load sensitive pump connects fuel tank B, and oil-out is sequentially connected with check valve B, filter B, stop valve and accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620323260.7U CN205588677U (en) | 2016-04-15 | 2016-04-15 | Interior high -pressure forming machine of variable mold clamping force |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620323260.7U CN205588677U (en) | 2016-04-15 | 2016-04-15 | Interior high -pressure forming machine of variable mold clamping force |
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| CN205588677U true CN205588677U (en) | 2016-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620323260.7U Expired - Fee Related CN205588677U (en) | 2016-04-15 | 2016-04-15 | Interior high -pressure forming machine of variable mold clamping force |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105729877A (en) * | 2016-04-15 | 2016-07-06 | 天津百利机械装备集团有限公司中央研究院 | Internal high-pressure forming machine with variable mold clamping force and internal high-pressure forming processing method |
| CN108356128A (en) * | 2016-12-20 | 2018-08-03 | 田大志 | High-pressure forming method |
| CN111872299A (en) * | 2020-08-20 | 2020-11-03 | 天津鹏鹄科技有限公司 | Four-column press and oil circuit system for electric upsetting forging |
-
2016
- 2016-04-15 CN CN201620323260.7U patent/CN205588677U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105729877A (en) * | 2016-04-15 | 2016-07-06 | 天津百利机械装备集团有限公司中央研究院 | Internal high-pressure forming machine with variable mold clamping force and internal high-pressure forming processing method |
| CN108356128A (en) * | 2016-12-20 | 2018-08-03 | 田大志 | High-pressure forming method |
| CN108405698A (en) * | 2016-12-20 | 2018-08-17 | 田大志 | A kind of high-pressure forming method |
| CN108405698B (en) * | 2016-12-20 | 2019-11-19 | 合肥海诺恒信息科技有限公司 | A kind of high-pressure forming method |
| CN111872299A (en) * | 2020-08-20 | 2020-11-03 | 天津鹏鹄科技有限公司 | Four-column press and oil circuit system for electric upsetting forging |
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