CN207914557U - The differential oil line system of injection real-time control in a kind of die casting machine - Google Patents
The differential oil line system of injection real-time control in a kind of die casting machine Download PDFInfo
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- CN207914557U CN207914557U CN201820082371.2U CN201820082371U CN207914557U CN 207914557 U CN207914557 U CN 207914557U CN 201820082371 U CN201820082371 U CN 201820082371U CN 207914557 U CN207914557 U CN 207914557U
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- die casting
- casting machine
- shot sleeve
- time control
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- 239000007924 injection Substances 0.000 title claims abstract description 42
- 238000002347 injection Methods 0.000 title claims abstract description 42
- 238000004512 die casting Methods 0.000 title claims abstract description 30
- 230000000694 effects Effects 0.000 claims abstract description 8
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 230000035939 shock Effects 0.000 abstract description 5
- 238000005242 forging Methods 0.000 abstract description 2
- 238000001746 injection moulding Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 50
- 239000007788 liquid Substances 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
This application involves die casting machine, injection molding machine, forging presses etc., are particularly suitable for die casting machine technical field.The differential oil line system of injection real-time control in specially a kind of die casting machine, for in the differential oil line of real-time control, it includes shot sleeve and for controlling shot sleeve oil inlet and fuel-displaced pipeline, wherein, the pipeline includes the first pipe for being connected to the oil inlet of shot sleeve side, it is connected to the fuel-displaced third pipeline in the shot sleeve other side, the 4th pipeline for being used to form differential oil line is equipped between shot sleeve and first pipe equipped with third pipeline；The both sides of shot sleeve are arranged to the mode of communicating of one-way flow, avoids generating high pressure or compression shock in injection cylinder working, enhances the effect of stability.
Description
Technical field
This application involves die casting machine, injection molding machine, forging presses etc., are particularly suitable for die casting machine technical field.It is specially a kind of
The differential oil line system of injection real-time control in die casting machine, in the differential oil line of real-time control.
Background technology
In the prior art：
Such as：Chinese patent：Uniformly accelerated injectino system for die casting machnie；A kind of even acceleration injection system of die casting machine, it is main to wrap
Shot sleeve, injection rod, injection punch head, pressure chamber, mold and pressurized cylinder, accumulator and oil pump, valve are included, wherein injection rod is by pressing
Cylinder promotion is penetrated, the movement of the injection rod is divided into slow shot stage, fast shot stage and pressurization stages, and the slow shot stage
It is divided into even accelerating sections and at the uniform velocity section, the value of the at the uniform velocity section is the critical speed determined by process conditions.Critical speed takes 0.1-
0.8m/s。
This document is the prior art of the application, is controlled in such a way that oil line pipe is arranged in both ends in the design,
In the specific use process, it is larger that oil pressure in shot sleeve often occurs, by unstable impact force.
In another example：Chinese patent：A kind of improved hot-chamber die casting machine injection system, belongs to field of die casting machines.It is existing
The pressure that a kind of hot-chamber die casting machine injection system of technology provides is not enough, die-cast product can't meet the quality requirement.This practicality is new
Type increases an intensifier hydraulic circuit on the hot-chamber die casting machine injection system of the prior art, which includes B
Check valve, C check valves, pressure reducing valve, solenoid valve, B inserted valves, safety valve, B air gauges, B shut-off valves, B accumulators and C shut-off valves.
This document is the application closest to the prior art, is set in this application to pipeline using complicated oil circuit
Meter, but still there are the larger situations of pipeline local pressure in oil circuit.
The above patent application is led thus since their technical solution purpose and technical problem to be solved are different
The technical solution for causing them includes the difference of structures and methods, to present patent application, otherwise they can not simply be combined
Structure design can be caused more complicated, or cannot be implemented, etc..
In consideration of it, how to design a kind of differential oil line system of injection real-time control in die casting machine, overcome above-mentioned existing
Defect in the presence of technology is those skilled in the art's technical problem urgently to be resolved hurrily.
Utility model content
The application's aims to overcome that the technical problems existing in the prior art, and it is real to provide injection in a kind of die casting machine
When the differential oil line system that controls.
The purpose of the application is completed by following technical solution, and injection real-time control is differential in a kind of die casting machine
Oil piping system, including shot sleeve and for controlling shot sleeve oil inlet and fuel-displaced pipeline, wherein the pipeline includes connection
In the first pipe of shot sleeve side oil inlet, it is connected to the fuel-displaced third pipeline in the shot sleeve other side, and be connected to shot sleeve
Between first pipe, it is used to form the 4th pipeline of differential oil line.
It is set on 4th pipeline there are one the 4th valve, the 4th valve is one for controlling flow direction in oil circuit and having unidirectional work(
The hydraulic valve or motor-driven valve of energy.
The shot sleeve include the rodless cavity of side, the other side rod chamber, first pipe connect with rodless cavity, third pipe
Road is connect with rod chamber.
The first pipe is equipped with the first valve of control oil inlet uninterrupted, and third pipeline is equipped with control return flow
The third valve of size.
One end of the first pipe is connected on shot sleeve, is connected with accumulator on the other end.
The side of the shot sleeve is rodless cavity, the other side is rod chamber, and the rodless cavity, which is equipped with, to be increased into injection oil
Second pipe.
The end of the rodless cavity is equipped with booster cavity, and one end of second pipe is connected on booster cavity, connects on the other end
It is connected to accumulator.
The second pipe is equipped with the second valve for controlling its working condition.
The shot sleeve include the rodless cavity of side, the other side rod chamber, be equipped in the boring cavity of shot sleeve
Piston, and piston rod is connected, piston is arranged between rodless cavity and rod chamber, and piston is formed with the first work in rodless cavity
Face, piston are formed with the second working face in rod chamber, and the area of the first working face is more than the area of the second working face.
It is formed with rodless cavity pressure in the rodless cavity, rod chamber pressure, rodless cavity and rod chamber are formed in rod chamber
Between the effect force difference that is formed push piston to be moved.
The application compared with prior art, at least has following obvious advantage and effect：
1, system regime flow during slow shot can be made by increasing meter in real-time control, keep, compared with low velocity, making
Piston rod operates steadily, speed is controllable, prevents fusing metal volume gas from influencing product quality, and entrance throttle governing circuit circuit is easy in fact
Existing pressure control.
2, constituting differential circuit can make the maximum pressure of rod chamber keep outlet pressure (system pressure) phase with accumulator
Closely, it avoids generating fluid high pressure.There is no the advantages of high-voltage oil liquid can be brought to have：Elongated component service life；Keep original paper
The sealing performance of good using effect and oil cylinder and meter out valve reduces oil liquid leakage risk；It can be eliminated by accumulator
Generated compression shock；The control stability of raising system.
Description of the drawings
Attached drawing described herein is used for providing further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please do not constitute the improper restriction to the application for explaining the application.In the accompanying drawings：
Fig. 1 is the total system schematic diagram of the application.
Fig. 2 is the injection state diagram at a slow speed in the application system.
Fig. 3 is the quick injection state diagram in the application system.
Fig. 4 is the injection deceleration regime figure in the application system.
Fig. 5 is the pressurized state figure in the application system.
Token name claims in attached drawing：
| 1 | Shot sleeve | F1 | First valve | C1 | First pipe |
| 11 | Rodless cavity | F2 | Second valve | C2 | Second pipe |
| 12 | Rod chamber | F3 | Third valve | C3 | Third pipeline |
| F4 | 4th valve | C4 | 4th pipeline | ||
| P0 | System pressure | ||||
| P1 | Rodless cavity pressure | Z | Booster cavity | S1 | First working face |
| P2 | Rod chamber pressure | H | Piston | S2 | Second working face |
| △P1 | Pressure drop | Y | Accumulator | ||
| △P2 | The Opening pressure of F4 | G | Piston rod |
Specific implementation mode
To keep the purpose, technical scheme and advantage of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, shall fall in the protection scope of this application.
The differential oil line system of injection real-time control in a kind of die casting machine described herein, including shot sleeve 1 and
For controlling 1 oil inlet of shot sleeve and fuel-displaced pipeline, wherein the pipeline includes be connected to 1 side oil inlet of shot sleeve first
Pipeline C1 is connected to the fuel-displaced third pipeline C3 in 1 other side of shot sleeve, is equipped with the shot sleeve 1 and first pipe of third pipeline C3
The 4th pipeline C4 for being used to form differential oil line is equipped between C1；The both sides of shot sleeve are arranged to the mode of communicating of one-way flow,
It avoids generating high pressure or compression shock in injection cylinder working, enhances the effect of stability.
In the embodiment of the present application,
Shown in Fig. 1 to Fig. 5, the differential oil line system of injection real-time control in a kind of die casting machine, including shot sleeve
1 and for controlling 1 oil inlet of shot sleeve and fuel-displaced pipeline, wherein using pipeline oil inlet with it is fuel-displaced, pass through oil circuit direction
Change, and then realize adjusting and control to pressure in shot sleeve 1.
Therefore the pipeline of liquid communication is set to the structure of connection, the flowing of liquid is exported, is fundamentally kept away
Exempt from the excessive situation of local pressure.
Pipeline is equipped with three, wherein into fuel-displaced each one, an additional communicating pipe forms the balance of oil circuit, utilizes connection
Pipeline avoids generating high pressure or compression shock in shot sleeve 1, and the motion mode stablized in shot sleeve 1 is formed using connection.
Pipeline includes the first pipe C1 for being connected to 1 side oil inlet of shot sleeve, be connected to 1 other side of shot sleeve it is fuel-displaced
Three pipeline C3 are equipped with the 4th pipe for being used to form differential oil line between shot sleeve 1 and first pipe C1 equipped with third pipeline C3
Road C4.
Wherein, the 4th pipeline C4 is the oil line pipe for being connected to 1 front and rear sides of shot sleeve.Ensure shot sleeve 1 using the oil pipe
In into it is fuel-displaced being capable of even running.
Set on the 4th pipeline C4 there are one the 4th valve F4, the 4th valve F4 be one for control flowed in oil circuit it is unidirectional
Valve.Be arranged check valve ensure the 4th pipeline C4 in oil circuit orientation from the rod chamber 12 of shot sleeve 1 into accumulator Y oriented flow
It is dynamic, the differential oil line in the 4th pipeline C4 is formed by check valve.
Further, include the rodless cavity 11 of side, the rod chamber 12 of the other side, first pipe C1 in the shot sleeve 1
It being connect with rodless cavity 11, hydraulic oil is transmitted into rodless cavity 11 by first pipe C1, third pipeline C3 is connect with rod chamber 12,
Rod chamber 12 is oily to third pipeline C3 output hydraulic pressures.
Utilize the movement for cooperatively forming piston H in shot sleeve 1 between first pipe C1 and third pipeline C3.
The right side of shot sleeve 1 is rodless cavity 11, left side is rod chamber 12, real by the connection of rodless cavity 11 and rod chamber 12
Existing differential connection.
The first valve F1 of control oil inlet uninterrupted is equipped on the first pipe C1, using the first valve F1 to shot sleeve
Pressure and flow in 1 rodless cavity 11 are controlled, and the adjustment effect to piston rod G is played.
The third valve F3 of control return flow size is equipped on the third pipeline C3.Using third valve F3 to shot sleeve
Flow in 1 rod chamber 12 carries out real-time control, controls the oil extraction flow of hydraulic cylinder to realize the speed tune to piston rod G
Section.
One end of the first pipe C1 is connected on shot sleeve 1, is connected with accumulator Y on the other end.
The rodless cavity 11 and accumulator Y of shot sleeve 1 is connected to by first pipe C1, by accumulator Y-direction rodless cavity 11
Convey hydraulic oil.
The side of the shot sleeve 1 is rodless cavity 11, the other side is rod chamber 12, and the rodless cavity 11, which is equipped with, to be increased into pressure
Penetrate the second pipe C2 of oil.
Second pipe C2 is set in the tail end of rodless cavity 11, the densification of product can be improved by the fuel feeding of second pipe C2
Degree promotes die casting performance.
The end of the rodless cavity 11 is equipped with booster cavity Z, and one end of second pipe C2 is connected on booster cavity Z, is another
Accumulator Y is connected on end.
Booster cavity Z is set using 11 tail end of rodless cavity, the hydraulic oil in second pipe C2 is accessed by booster cavity Z, is passed through
Second pipe C2 increases realizes supercharging into a large amount of hydraulic oil, promotes the yields of product.
The second pipe C2 is equipped with the second valve F2 for controlling its working condition.
Oil circuit supply is controlled by the second valve F2 being arranged on second pipe C2, and then to whether being pressurized and selecting.
Piston H is equipped in the boring cavity of the shot sleeve 1, the side of piston H is rodless cavity 11, the other side is to have
Rod cavity 12, piston H are formed with the first working face S1 in rodless cavity 11, and piston H is formed with the second working face in rod chamber 12
The area of S2, the first working face S1 are more than the area of the second working face S2.
The area of first working face S1 is more than the area of the second working face S2, and the bar in rod chamber 12 is pushed convenient for piston H
Body is protruding, and at the oil circuit direction in switching shot sleeve 1, the reverse reverting of the body of rod may be implemented.
It is formed with rodless cavity pressure P1 in the rodless cavity 11, rod chamber pressure P2, rodless cavity are formed in rod chamber 12
The pressure difference shape formed between pressure P1 and rod chamber pressure P2 is for pushing piston H to be moved.
When being more than the pressure of rod chamber pressure P2 using rodless cavity pressure P1, piston H pushes the body of rod in rod chamber 12 defeated
Go out.
When being much larger than the pressure of rodless cavity pressure P1 using rod chamber pressure P2, piston H pushes the body of rod in rod chamber 12
It replys.
In the another embodiment of the application, the system pressure P0 of accumulator Y in the system of the technical solution, from accumulator Y to
The pressure drop of rodless cavity 11 is Δ P1, wherein pressure drop Δ P1 is pressure loss when hydraulic oil flows in the duct.4th valve F4's
Opening pressure Δ P2, Opening pressure Δ P2 are the initial start pressure loss of the 4th valve F4.
Wherein, the first working face S1 and the second working face S2 that the rodless cavity 11 of shot sleeve 1 and rod chamber 12 are formed is to have
The work area of effect, wherein the ratio S1/S2=K of effective area.
Work area is the inner wall section that the first working face S1, the first working face S1 refers to shot sleeve 1 wherein in rodless cavity 11
The cross section of area or piston H.
Work area in rod chamber 12 is the second working face S2, and the second working face S2 refers to piston cross-section, subtracts work
The cross-sectional area of stopper rod.
As shown in Fig. 2, being injection at a slow speed：During slow shot, the first valve F1 obtain it is electric, third valve F3 must not electricity, hydraulic pressure
Oil returns to the oil outlet that rodless cavity 11 returns to accumulator Y from rod chamber 12, need to open the 4th valve F4, then rod chamber 12 has bar
Cavity pressure P2 is up to that system pressure P0 adds Opening pressure Δ P2, and Opening pressure Δ P2 is generally in 5bar or so.
The pressure of rodless cavity 11 is controlled by the amount of opening of the first valve F1, and amount of opening is bigger, and the pressure loss is bigger, then
11 pressure of rodless cavity is smaller, on the contrary then pressure is big.Meter in control can control the flow of rodless cavity 11, pressure, make
The oil piping system of shot sleeve 1 is more stable, controllable.Under this state, ease up more stable without impacting.
As shown in figure 3, being quick injection：During fast shot, the first valve F1, the second valve F3 obtain electric, and third valve F3 is opened
The amount of opening is big, and piston rod quickly propels, and oil pressure liquid is fallen after rise therewith through third valve F3 oil return boxes, rod chamber pressure P2, rod chamber pressure
The maximum pressure that P2 is likely to be breached adds Opening pressure Δ P2 no more than system pressure P0.
As shown in figure 4, slowing down for injection：The cavity of mold will fill full at this time, and third valve F3 must not be electric, and piston rod subtracts
Speed, at this time oil pressure liquid return to rodless cavity 11 i.e. accumulator Y oil outlets from rod chamber 12 again, after the 4th valve F4 is opened, rod chamber
12 rod chamber pressure P2 is up to that system pressure P0 adds Opening pressure Δ P2, and the rodless cavity pressure P1 of rodless cavity 11 passes through the
One valve F1 controls, rodless cavity pressure P1 are necessarily less than P0+ Δs P2/2.
As shown in figure 5, being pressure charging press-shoot：In pressurization stages, the filling of rodless cavity 11 is completed, and the second valve F2 is opened or beaten in advance
It opens, starts to be pressurized.
The differential oil line controlled in real time or in time using injection can guarantee that the maximum pressure of rod chamber 11 is no more than system pressure
The sum of the Opening pressure of power P0 and the 4th valve F4 have compared with the maximum pressure of meter out real-time control is likely to be breached 420bar
There is the advantage that pressure is substantially reduced.
The oil circuit of differential connection can greatly improve working efficiency, and 12 flow of rod chamber flows directly into rodless cavity 11, reduce
The supply flow of accumulator Y realizes small flow at high speed；Simultaneously most senior engineer is reduced on the basis of meeting each stage speed of injection
Make oil pressure, so that each element is prolonged the service life, and reduce compression shock, ensures that bulk loop operation is more reliable, stablizes.
Above is only an example of the present application, moreover, the title that parts are taken in the application can not also
Together, the title being not intended to limit in the application.To those skilled in the art, the application can have various modifications and variations.
All any modification, equivalent replacement, improvement and so within the design of the application and principle, should be included in the power of the application
Within sharp claimed range.
Claims (10)
1. the differential oil line system of injection real-time control in a kind of die casting machine, including shot sleeve（1）And for controlling shot sleeve
（1）Oil inlet and fuel-displaced pipeline, it is characterised in that：The pipeline includes being connected to shot sleeve（1）The first pipe of side oil inlet
（C1）, it is connected to shot sleeve（1）The fuel-displaced third pipeline in the other side（C3）, and it is connected to shot sleeve（1）With first pipe
（C1）Between, be used to form the 4th pipeline of differential oil line（C4）.
2. according to claim 1 in die casting machine injection real-time control differential oil line system, it is characterised in that：Described 4th
Pipeline（C4）On set there are one the 4th valve（F4）, the 4th valve（F4）For one for controlling flow direction in oil circuit and there is one-way function
Hydraulic valve or motor-driven valve.
3. according to claim 1 in die casting machine injection real-time control differential oil line system, it is characterised in that：The injection
Cylinder（1）Rodless cavity including side（11）, the other side rod chamber（12）, first pipe（C1）With rodless cavity（11）Connection, the
Three pipelines（C3）With rod chamber（12）Connection.
4. according to claim 1 in die casting machine injection real-time control differential oil line system, it is characterised in that：Described first
Pipeline（C1）It is equipped with the first valve of control oil inlet uninterrupted（F1）, third pipeline（C3）It is equipped with control return flow size
Third valve（F3）.
5. according to claim 1 in die casting machine injection real-time control differential oil line system, it is characterised in that：Described first
Pipeline（C1）One end be connected to shot sleeve（1）It is connected with accumulator on the upper, other end（Y）.
6. according to claim 1 in die casting machine injection real-time control differential oil line system, it is characterised in that：The injection
Cylinder（1）Side be rodless cavity（11）, the other side be rod chamber（12）, the rodless cavity（11）It is equipped with and increases the into injection oil
Two pipelines（C2）.
7. according to claim 6 in die casting machine injection real-time control differential oil line system, it is characterised in that：The no bar
Chamber（11）End be equipped with booster cavity（Z）, second pipe（C2）One end be connected to booster cavity（Z）It is connected on the upper, other end
There is accumulator（Y）.
8. according to claim 6 in die casting machine injection real-time control differential oil line system, it is characterised in that：Described second
Pipeline（C2）It is equipped with the second valve for controlling its working condition（F2）.
9. according to claim 1 in die casting machine injection real-time control differential oil line system, it is characterised in that：The injection
Cylinder（1）Rodless cavity including side（11）, the other side rod chamber（12）, shot sleeve（1）Boring cavity in be equipped with live
Plug（H）, and connect piston rod（G）, piston（H）It is arranged in rodless cavity（11）With rod chamber（12）Between, piston（H）In rodless cavity
（11）In be formed with the first working face（S1）, piston（H）In rod chamber（12）In be formed with the second working face（S2）, the first work
Face（S1）Area be more than the second working face（S2）Area.
10. according to claim 9 in die casting machine injection real-time control differential oil line system, it is characterised in that：The nothing
Rod cavity（11）In be formed with rodless cavity pressure（P1）, rod chamber（12）In be formed with rod chamber pressure（P2）, rodless cavity（11）With
Rod chamber（12）Between the effect force difference that is formed push piston（H）It is moved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820082371.2U CN207914557U (en) | 2018-01-18 | 2018-01-18 | The differential oil line system of injection real-time control in a kind of die casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820082371.2U CN207914557U (en) | 2018-01-18 | 2018-01-18 | The differential oil line system of injection real-time control in a kind of die casting machine |
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| Publication Number | Publication Date |
|---|---|
| CN207914557U true CN207914557U (en) | 2018-09-28 |
Family
ID=63604436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820082371.2U Active CN207914557U (en) | 2018-01-18 | 2018-01-18 | The differential oil line system of injection real-time control in a kind of die casting machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN207914557U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108188371A (en) * | 2018-01-18 | 2018-06-22 | 宁波海天金属成型设备有限公司 | The differential oil line system that injection controls in real time in a kind of die casting machine |
-
2018
- 2018-01-18 CN CN201820082371.2U patent/CN207914557U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108188371A (en) * | 2018-01-18 | 2018-06-22 | 宁波海天金属成型设备有限公司 | The differential oil line system that injection controls in real time in a kind of die casting machine |
| CN108188371B (en) * | 2018-01-18 | 2024-04-19 | 宁波海天金属成型设备有限公司 | Differential oil circuit system for real-time control of injection in die casting machine |
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| CP03 | Change of name, title or address |
Address after: 12 / F, building 1, 32 Jiangnan Middle Road, Xiaogang, Beilun District, Ningbo City, Zhejiang Province Patentee after: Ningbo Haitian Zhisheng Trading Co.,Ltd. Country or region after: China Address before: 12 / F, building 1, 32 Jiangnan Middle Road, Xiaogang, Beilun District, Ningbo City, Zhejiang Province Patentee before: NINGBO HAITIAN DIE CASTING EQUIPMENTS Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |
Effective date of registration: 20240419 Address after: No. 8-1 Lingshan Road, Daqi Street, Beilun District, Ningbo City, Zhejiang Province, 315000 Patentee after: Ningbo Free Trade Zone Haitian Zhisheng metal forming equipment Co.,Ltd. Country or region after: China Address before: 12 / F, building 1, 32 Jiangnan Middle Road, Xiaogang, Beilun District, Ningbo City, Zhejiang Province Patentee before: Ningbo Haitian Zhisheng Trading Co.,Ltd. Country or region before: China |