CN109049576A - A kind of hydraulic system of the high-voltage lock mould structure for large-scale two-plate type injection machine - Google Patents
A kind of hydraulic system of the high-voltage lock mould structure for large-scale two-plate type injection machine Download PDFInfo
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- CN109049576A CN109049576A CN201811108335.XA CN201811108335A CN109049576A CN 109049576 A CN109049576 A CN 109049576A CN 201811108335 A CN201811108335 A CN 201811108335A CN 109049576 A CN109049576 A CN 109049576A
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- valve
- voltage lock
- lock mould
- oil
- oil inlet
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- 238000002347 injection Methods 0.000 title claims abstract description 15
- 239000007924 injection Substances 0.000 title claims abstract description 15
- 239000002828 fuel tank Substances 0.000 claims abstract description 30
- 239000003921 oil Substances 0.000 claims description 116
- 239000002243 precursor Substances 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 3
- 239000000295 fuel oil Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims 1
- 238000001746 injection moulding Methods 0.000 abstract description 4
- 238000012797 qualification Methods 0.000 abstract description 4
- 239000010720 hydraulic oil Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/67—Mould opening, closing or clamping devices hydraulic
Abstract
The present invention relates to a kind of hydraulic systems of high-voltage lock mould structure for large-scale two-plate type injection machine, including high-voltage lock mould valve group, variable piston pump group and servo power system, the oil inlet of the variable piston pump group and servo power system is connected with fuel tank, the oil outlet of the servo power system is connected with the oil inlet of high-voltage lock mould valve group, the oil outlet of the variable piston pump group is connected with the P of high pressure auxiliary valve mouth, the A mouth of the high pressure auxiliary valve is connected with the oil inlet of the oil inlet of high-voltage lock mould valve group and high-pressure unloading valve respectively, the T mouth of the high pressure auxiliary valve and the oil outlet of high-pressure unloading valve are connected with fuel tank respectively.The principle of the invention is simple and practical, it is possible to provide reliable, stable high-voltage lock mould power, so that four Gen Gelin column uniform force of two-plate injection molding machine, effective hoisting machine performance and consumer product qualification rate.
Description
Technical field
The present invention relates to mould-locking structure technical field of hydraulic, more particularly to one kind for large-scale two-plate type injection machine
High-voltage lock mould structure hydraulic system.
Background technique
For conventional large-scale two-plate injection molding machine, system pressure is not carried out as three triggers hinge machine with high-voltage lock mould power
Amplification, so that the design of high-voltage lock mould oil cylinder is relatively large, pipeline and the connector for controlling high-voltage lock mould oil cylinder are also more, Ge Gegao
It presses the leakage of Mode-locking oil cylinder also larger and the leakage rate of each cylinder is also different, cause the crushing of each cylinder different, Jin Ersi
Gen Gelin column stress is unequal, so that the product wall unevenness produced is even, or even short shot occurs or has overlap not
Good product.Therefore, it is badly in need of a kind of can provide reliable, stable, uniform force high-voltage lock mould power solution.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of high-voltage lock mould structures for large-scale two-plate type injection machine
Hydraulic system, principle is simple and practical, it is possible to provide reliable, stable high-voltage lock mould power so that four brothers of two-plate injection molding machine
Woods column uniform force, effective hoisting machine performance and consumer product qualification rate.
The technical solution adopted by the present invention to solve the technical problems is: providing a kind of for large-scale two-plate type injection machine
The hydraulic system of high-voltage lock mould structure, including high-voltage lock mould valve group, variable piston pump group and servo power system, the variable
The oil inlet of plunger pump group and servo power system is connected with fuel tank, the oil outlet and high-voltage lock mould of the servo power system
The oil inlet of valve group is connected, and the oil outlet of the variable piston pump group is connected with the P of high pressure auxiliary valve mouth, and the high pressure is auxiliary
The A mouth of valve is helped to be connected respectively with the oil inlet of the oil inlet of high-voltage lock mould valve group and high-pressure unloading valve, the high pressure auxiliary valve
T mouth and the oil outlet of high-pressure unloading valve be connected respectively with fuel tank.
The high-voltage lock mould valve group includes high-voltage lock mould reversal valve, high-voltage lock mould oil cylinder and reset safety overflow valve, institute
There are four the high-voltage lock mould reversal valve stated is total, connect one to one respectively with four high-voltage lock mould oil cylinders, variable piston pump group
Oil outlet is connected with the oil inlet of interflow inserting check valve, the oil outlet pipe of interflow inserting check valve and going out for servo power system
Oil pipe line collaborate simultaneously be connected with the P of four high-voltage lock mould reversal valves mouth, the A mouth of four high-voltage lock mould reversal valves with it is corresponding
High-voltage lock mould oil cylinder oil inlet mouth is connected, the unloading port of the high-voltage lock mould oil cylinder and corresponding high-voltage lock mould reversal valve
B mouthfuls are connected, and the oil inlet one-to-one correspondence that the unloading port of four high-voltage lock mould oil cylinders resets safety overflow valve with four is connected, described
The oil outlet of reset safety overflow valve be connected to the T of high-voltage lock mould reversal valve mouth with fuel tank.
The servo power system includes conveying motor, main safe inserted valve and precursor overflow valve, the conveying horse
There are three altogether, the oil inlet for conveying motor is connected with fuel tank, and oil outlet passes through the oil inlet phase of pipeline and high-voltage lock mould valve group
Even, pass through branch's oil circuit oil inlet with main safe inserted valve and precursor overflow valve respectively on the oil outlet of the conveying motor
It is connected, the control mouth of the main safe inserted valve is connected by pipeline with the oil inlet of precursor overflow valve, the main safety
The oil outlet of inserted valve and precursor overflow valve is connected with fuel tank.
The variable piston pump group includes hydraulic motor, shut-off valve and reversal valve, the oil inlet of the hydraulic motor
Be connected with fuel tank, the oil outlet of hydraulic motor is connected with the oil inlet of a shut-off valve and two reversal valves respectively, shut-off valve and
The oil outlet of reversal valve is connected with fuel tank, and the control mouth of two reversal valves is connected with the oil inlet of two overflow valves respectively, described
The oil inlet of overflow valve be connected with the oil outlet of hydraulic motor, the oil outlet of overflow valve is connected with fuel tank.
The high pressure auxiliary valve is using middle position formula M type reversing solenoid valve, the A mouth and height of the high pressure auxiliary valve
Tubular type check valve of the outlet towards high-voltage lock mould valve group is installed on the connected pipeline of pressure mode locking valve group.
Filter is mounted on the pipeline that the variable piston pump group and servo power system is connected with fuel tank.
For the high-voltage lock mould reversal valve using O-shaped electro-hydraulic reversing valve, described resets what safety overflow valve used
It is screw-type inserting overflow valve.
Pressure is mounted in the oil outlet pipe of the servo power system and the oil outlet pipe of interflow inserting check valve
Sensor.
The utility model has the advantages that the present invention relates to a kind of hydraulic system of high-voltage lock mould structure for large-scale two-plate type injection machine,
Principle is simple and practical, it is possible to provide reliable, stable high-voltage lock mould power, so that four Gen Gelin column stress of two-plate injection molding machine is equal
It is even, effective hoisting machine performance and consumer product qualification rate.
Detailed description of the invention
Fig. 1 is hydraulic diagram of the invention；
Fig. 2 is the hydraulic diagram of high-voltage lock mould valve group of the present invention；
Fig. 3 is the hydraulic diagram of servo power system of the present invention；
Fig. 4 is the hydraulic diagram of variable piston pump group of the present invention；
Fig. 5 is the enlarged drawing of high pressure auxiliary valve of the present invention.
Diagram: 1, high-voltage lock mould valve group, 2, variable piston pump group, 3, servo power system, 4, high pressure auxiliary valve, 5, high pressure
Unloading valve, 6, interflow inserting check valve, 7, pressure sensor, 8, high-voltage lock mould reversal valve, 9, reset safety overflow valve, 10, height
Pressure Mode-locking oil cylinder, 11, conveying motor, 12, main safe inserted valve, 13, precursor overflow valve, 14, hydraulic motor, 15, shut-off valve,
16, reversal valve, 17, overflow valve.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiments of the present invention are related to a kind of hydraulic system of high-voltage lock mould structure for large-scale two-plate type injection machine,
As shown in Fig. 1-5, including high-voltage lock mould valve group 1, variable piston pump group 2 and servo power system 3, the Variable plunger pump
The oil inlet of group 2 and servo power system 3 is connected with fuel tank, the oil outlet and high-voltage lock mould valve of the servo power system 3
The oil inlet of group 1 is connected, and the oil outlet of the variable piston pump group 2 is connected with the P of high pressure auxiliary valve 4 mouth, the high pressure
The A mouth of auxiliary valve 4 is connected with the oil inlet of the oil inlet of high-voltage lock mould valve group 1 and high-pressure unloading valve 5 respectively, and the high pressure is auxiliary
The oil outlet of the T mouth and high-pressure unloading valve 5 that help valve 4 is connected with fuel tank respectively.
The high-voltage lock mould valve group 1 includes high-voltage lock mould reversal valve 8, high-voltage lock mould oil cylinder 10 and reset safety overflow valve
9, the high-voltage lock mould reversal valve 8 connects one to one with four high-voltage lock mould oil cylinders 10 respectively there are four being total to, variable piston
The oil outlet of pump group 2 is connected with the oil inlet of interflow inserting check valve 6, and the oil outlet pipe and servo of interflow inserting check valve 6 are dynamic
The oil outlet pipe of Force system 3 collaborates and is connected with the P of four high-voltage lock mould reversal valves 8 mouth, the A of four high-voltage lock mould reversal valves 8
Mouthful be connected with corresponding 10 oil inlet of high-voltage lock mould oil cylinder, the unloading port of the high-voltage lock mould oil cylinder 10 with it is respective corresponding
The B mouth of high-voltage lock mould reversal valve 8 be connected, the unloading port of four high-voltage lock mould oil cylinders 10 and four reset safety overflow valves 9
Oil inlet, which corresponds, to be connected, the oil outlet of the reset safety overflow valve 9 and the T mouth and fuel tank of high-voltage lock mould reversal valve 8
Connection.
The servo power system 3 includes conveying motor 11, main safe inserted valve 12 and precursor overflow valve 13, described
There are three conveying motor 11 is total, the oil inlet of conveying motor 11 is connected with fuel tank, and oil outlet passes through pipeline and high-voltage lock mould valve group 1
Oil inlet be connected, on the oil outlet of the described conveying motor 11 by branch's oil circuit respectively with main safe inserted valve 12 and guide
The oil inlet of overflow valve 13 is connected, and the control mouth of the main safe inserted valve 12 passes through the oil inlet of pipeline and precursor overflow valve 13
Mouth is connected, and the oil outlet of the main safe inserted valve 12 and precursor overflow valve 13 is connected with fuel tank.
The variable piston pump group 2 includes hydraulic motor 14, shut-off valve 15 and reversal valve 16, the hydraulic motor 14
Oil inlet be connected with fuel tank, the oil outlet of hydraulic motor 14 oil inlet with a shut-off valve 15 and two reversal valves 16 respectively
Be connected, the oil outlet of shut-off valve 15 and reversal valve 16 is connected with fuel tank, the control mouth of two reversal valves 16 respectively with two overflows
The oil inlet of valve 17 is connected, and the oil inlet of the overflow valve 17 is connected with the oil outlet of hydraulic motor 14, and overflow valve 17 goes out
Hydraulic fluid port is connected with fuel tank.
The high pressure auxiliary valve 4 using middle position formula M type reversing solenoid valve, the A mouth of the high pressure auxiliary valve 4 with
Tubular type check valve of the outlet towards high-voltage lock mould valve group 1 is installed on the connected pipeline of high-voltage lock mould valve group 1.
Filter is mounted on the pipeline that the variable piston pump group 2 and servo power system 3 is connected with fuel tank.
The high-voltage lock mould reversal valve 8 is used using O-shaped electro-hydraulic reversing valve, the reset safety overflow valve 9
Be screw-type inserting overflow valve.
Pressure is mounted in the oil outlet pipe of the servo power system 3 and the oil outlet pipe of interflow inserting check valve 6
Force snesor 7.
Embodiment
Hydraulic oil is provided simultaneously by servo power system 3 and variable piston pump group 2, and the hydraulic oil of servo power system 3 is first
B mouthfuls are arrived via the A mouth of interflow inserting check valve 6, then reaches the P mouth of high-voltage lock mould reversal valve 8, the liquid of variable piston pump group 2
Pressure oil reaches the P mouth of high-voltage lock mould reversal valve 8, the right end electricity of high-voltage lock mould reversal valve 8 via high pressure auxiliary valve 4, check valve
Magnet obtains electric, and the P mouth of high-voltage lock mould reversal valve 8 is A mouthfuls logical, and hydraulic oil enters the Mode-Locking Cavity of high-voltage lock mould oil cylinder 10, works as high pressure
After the piston of Mode-locking oil cylinder 10 has reached locations of high pressure, due to the single effect of interflow inserting check valve 6, high-pressure gets up
Afterwards, the B mouth pressure of interflow inserting check valve 6 is greater than to A mouthfuls of pressure, and high-pressure and hydraulic is provided separately by variable piston pump group 2 at this time
Oil, and fed back by 7 pressure detecting of pressure sensor, with compensation, four high-voltage lock mould oil cylinders 10 are leaked during high pressure is kept
Hydraulic oil, guarantee that the pressure of four high-voltage lock mould oil cylinders 10 is uniformly and stably maintained at setting value, thus guarantee four Gen Gelin
Column uniform force, effective hoisting machine performance and consumer product qualification rate terminate to the movement of this high-voltage lock mould；Work as homing action
When, under high pressure holding, the electromagnet of high-pressure unloading valve 5 obtains electric, and the hydraulic oil of the Mode-Locking Cavity of high-voltage lock mould oil cylinder 10 is via height
Pressure mode locking reversal valve 8, high-pressure unloading valve 5 let out oil return box, achieve the purpose that unload high pressure；Hydraulic oil is by servo power system 3 at this time
It provides, arrives B mouthfuls via the A mouth of interflow inserting check valve 6, the P mouth of high-voltage lock mould reversal valve 8 is then reached, due to high-voltage lock mould
The left end electromagnet of reversal valve 8 obtains electric, and the A mouth of high-voltage lock mould reversal valve 8 is T mouthful logical, and P mouthfuls lead to B mouthfuls, and hydraulic oil enters high-voltage lock mould
The hydraulic oil of the reseting cavity of oil cylinder 10, Mode-Locking Cavity then returns to fuel tank, realizes homing action.
Claims (7)
1. a kind of hydraulic system of the high-voltage lock mould structure for large-scale two-plate type injection machine, including high-voltage lock mould valve group (1), change
Measure plunger pump group (2) and servo power system (3), it is characterised in that: the variable piston pump group (2) and servo power system
(3) oil inlet is connected with fuel tank, the oil outlet of the servo power system (3) and the oil inlet of high-voltage lock mould valve group (1)
It is connected, the oil outlet of the variable piston pump group (2) is connected with the P mouth of high pressure auxiliary valve (4), the high pressure auxiliary valve
(4) A mouth is connected with the oil inlet of the oil inlet of high-voltage lock mould valve group (1) and high-pressure unloading valve (5) respectively, and the high pressure is auxiliary
The oil outlet of the T mouth and high-pressure unloading valve (5) that help valve (4) is connected with fuel tank respectively；
The high-voltage lock mould valve group (1) includes high-voltage lock mould reversal valve (8), high-voltage lock mould oil cylinder (10) and reset safety overflow
Valve (9), the high-voltage lock mould reversal valve (8) connect one to one with four high-voltage lock mould oil cylinders (10) respectively there are four being total to,
The oil outlet of variable piston pump group (2) is connected with the oil inlet of interflow inserting check valve (6), and interflow inserting check valve (6) goes out
Oil pipe line collaborates with the oil outlet pipe of servo power system (3) and is connected with the P mouth of four high-voltage lock mould reversal valves (8), and four
The A mouth of high-voltage lock mould reversal valve (8) is connected with corresponding high-voltage lock mould oil cylinder (10) oil inlet, the high-voltage lock mould oil
The unloading port of cylinder (10) is connected with the B mouth of corresponding high-voltage lock mould reversal valve (8), and four high-voltage lock mould oil cylinder (10) are unloaded
Hydraulic fluid port with four reset safety overflow valve (9) oil inlet one-to-one correspondence is connected, the reset safety overflow valve (9) it is fuel-displaced
Mouth is connected to the T mouth of high-voltage lock mould reversal valve (8) with fuel tank.
2. a kind of hydraulic system of high-voltage lock mould structure for large-scale two-plate type injection machine according to claim 1,
Be characterized in that: the servo power system (3) includes conveying motor (11), main safe inserted valve (12) and precursor overflow valve
(13), there are three the conveying motor (11) is total to, the oil inlet of conveying motor (11) is connected with fuel tank, and oil outlet passes through pipeline
Be connected with the oil inlet of high-voltage lock mould valve group (1), on the oil outlet of the conveying motor (11) by branch's oil circuit respectively with
Main safe inserted valve (12) is connected with the oil inlet of precursor overflow valve (13), and the control mouth of the main safe inserted valve (12) is logical
It crosses pipeline to be connected with the oil inlet of precursor overflow valve (13), the main safe inserted valve (12) and precursor overflow valve (13) go out
Hydraulic fluid port is connected with fuel tank.
3. a kind of hydraulic system of high-voltage lock mould structure for large-scale two-plate type injection machine according to claim 1,
Be characterized in that: the variable piston pump group (2) includes hydraulic motor (14), shut-off valve (15) and reversal valve (16), described
The oil inlet of hydraulic motor (14) is connected with fuel tank, the oil outlet of hydraulic motor (14) respectively with a shut-off valve (15) and two
The oil inlet of reversal valve (16) is connected, and the oil outlet of shut-off valve (15) and reversal valve (16) is connected with fuel tank, two reversal valves
(16) control mouth is connected with the oil inlet of two overflow valves (17) respectively, the oil inlet of the overflow valve (17) and hydraulic horse
Oil outlet up to (14) is connected, and the oil outlet of overflow valve (17) is connected with fuel tank.
4. a kind of hydraulic system of high-voltage lock mould structure for large-scale two-plate type injection machine according to claim 1,
Be characterized in that: the high pressure auxiliary valve (4) using middle position formula M type reversing solenoid valve, the high pressure auxiliary valve (4)
Tubular type check valve of the outlet towards high-voltage lock mould valve group (1) is installed on the A mouthfuls of pipelines being connected with high-voltage lock mould valve group (1).
5. a kind of hydraulic system of high-voltage lock mould structure for large-scale two-plate type injection machine according to claim 1,
It is characterized in that: being mounted on filtering on the pipeline that the variable piston pump group (2) and servo power system (3) is connected with fuel tank
Device.
6. a kind of hydraulic system of high-voltage lock mould structure for large-scale two-plate type injection machine according to claim 1,
Be characterized in that: the high-voltage lock mould reversal valve (8) is using O-shaped electro-hydraulic reversing valve, the reset safety overflow valve (9)
Overflow valve is inserted using screw-type.
7. a kind of hydraulic system of high-voltage lock mould structure for large-scale two-plate type injection machine according to claim 1,
It is characterized in that: being respectively mounted in the oil outlet pipe of the servo power system (3) and the oil outlet pipe of interflow inserting check valve (6)
There are pressure sensor (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811108335.XA CN109049576A (en) | 2018-09-21 | 2018-09-21 | A kind of hydraulic system of the high-voltage lock mould structure for large-scale two-plate type injection machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811108335.XA CN109049576A (en) | 2018-09-21 | 2018-09-21 | A kind of hydraulic system of the high-voltage lock mould structure for large-scale two-plate type injection machine |
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| Publication Number | Publication Date |
|---|---|
| CN109049576A true CN109049576A (en) | 2018-12-21 |
Family
ID=64762431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811108335.XA Pending CN109049576A (en) | 2018-09-21 | 2018-09-21 | A kind of hydraulic system of the high-voltage lock mould structure for large-scale two-plate type injection machine |
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| CN (1) | CN109049576A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110757751A (en) * | 2019-09-29 | 2020-02-07 | 宁波力劲机械有限公司 | Oil circuit system of direct and fast clamping mechanism of two-plate injection molding machine for spring mold |
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| CN101554775A (en) * | 2009-05-11 | 2009-10-14 | 张家港市普天机械制造有限公司 | Hydraulic driving device in hollow blow molding machine |
| CN102582047A (en) * | 2011-01-12 | 2012-07-18 | 广州博创机械有限公司 | Mold-locking oil path system of large two-plate type injection molding machine |
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| CN105538625A (en) * | 2016-01-25 | 2016-05-04 | 海天塑机集团有限公司 | Injection molding machine synchronizing system and oil way control method thereof |
| CN207762036U (en) * | 2017-12-22 | 2018-08-24 | 中国科学院沈阳自动化研究所 | Towing winch hydraulic system with multiple-working mode |
| CN209022403U (en) * | 2018-09-21 | 2019-06-25 | 宁波力劲机械有限公司 | A kind of hydraulic system of the high-voltage lock mould structure for large-scale two-plate type injection machine |
-
2018
- 2018-09-21 CN CN201811108335.XA patent/CN109049576A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101224625A (en) * | 2007-12-05 | 2008-07-23 | 广东佳明机器有限公司 | High pressure model-locked loop of double movable plate direct press injection machine |
| CN101554775A (en) * | 2009-05-11 | 2009-10-14 | 张家港市普天机械制造有限公司 | Hydraulic driving device in hollow blow molding machine |
| CN102582047A (en) * | 2011-01-12 | 2012-07-18 | 广州博创机械有限公司 | Mold-locking oil path system of large two-plate type injection molding machine |
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| CN105538625A (en) * | 2016-01-25 | 2016-05-04 | 海天塑机集团有限公司 | Injection molding machine synchronizing system and oil way control method thereof |
| CN207762036U (en) * | 2017-12-22 | 2018-08-24 | 中国科学院沈阳自动化研究所 | Towing winch hydraulic system with multiple-working mode |
| CN209022403U (en) * | 2018-09-21 | 2019-06-25 | 宁波力劲机械有限公司 | A kind of hydraulic system of the high-voltage lock mould structure for large-scale two-plate type injection machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110757751A (en) * | 2019-09-29 | 2020-02-07 | 宁波力劲机械有限公司 | Oil circuit system of direct and fast clamping mechanism of two-plate injection molding machine for spring mold |
| CN110757751B (en) * | 2019-09-29 | 2021-11-30 | 宁波力劲机械有限公司 | Oil circuit system of direct and fast clamping mechanism of two-plate injection molding machine for spring mold |
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Application publication date: 20181221 Assignee: Guangdong Lijin Plastic Machinery Intelligent Manufacturing Co.,Ltd. Assignor: NINGBO LIJIN MACHINERY Co.,Ltd. Contract record no.: X2022980002916 Denomination of invention: A hydraulic system of high pressure mold locking structure for large two plate injection molding machine License type: Common License Record date: 20220322 |
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| CB02 | Change of applicant information |
Country or region after: China Address after: 315800 No. 18, yanshanhe North Road, Beilun District, Ningbo City, Zhejiang Province Applicant after: Ningbo Lijin Plastic Machinery Intelligent Manufacturing Co.,Ltd. Address before: 315800 No. 18, yanshanhe North Road, Beilun District, Ningbo City, Zhejiang Province Applicant before: NINGBO LIJIN MACHINERY Co.,Ltd. Country or region before: China |