CN108097986A - Lathe spindle air-cooled structure - Google Patents
Lathe spindle air-cooled structure Download PDFInfo
- Publication number
- CN108097986A CN108097986A CN201711319940.7A CN201711319940A CN108097986A CN 108097986 A CN108097986 A CN 108097986A CN 201711319940 A CN201711319940 A CN 201711319940A CN 108097986 A CN108097986 A CN 108097986A
- Authority
- CN
- China
- Prior art keywords
- gas passage
- bearing
- metal
- lathe spindle
- cooled structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 6
- 125000006850 spacer group Chemical group 0.000 claims description 23
- 230000000694 effects Effects 0.000 abstract description 8
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
- B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
- B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
- B23Q11/127—Arrangements for cooling or lubricating parts of the machine for cooling only for cooling motors or spindles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Turning (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The invention discloses a kind of lathe spindle air-cooled structures, including main body and upper bearing (metal), upper bearing (metal) is fixed on main body, main body is equipped with upper gas circuit, upper gas passage and several upper vent holes, upper gas circuit and upper vent hole connect respectively with upper gas passage, on in a ring, upper vent hole is uniformly distributed on gas passage gas passage, upper vent hole is towards upper bearing (metal).Blowning installation is connected with upper gas circuit, make air-flow through upper gas passage after, upper bearing (metal) is blowed to from upper vent hole, air is flowed through inside upper bearing (metal), the heat of upper bearing (metal) is taken away, is blown out via the gap of rear end, achievees the effect that cooling, steam dirt in the gap of rear and front end is blown away, realizes the effect of air curtain sealing.
Description
Technical field
The present invention relates to machining field more particularly to a kind of lathe spindle air-cooled structures.
Background technology
At present, with the raising of industrialization degree, more and more machining apparatus are applied in shop equipment, and bearing is made
For a kind of common structure, it is usually applied in production equipment, improves processing efficiency.
But there are following defects for existing lathe spindle structure：
Lathe spindle structure heat dissipation effect on the market is poor, and limit bearing uses rotating speed, is unfavorable for processing efficiency
It is promoted.Smaller pretightning force can only be applied by limiting bearing, be unfavorable for the raising of main shaft rigidity and bearing capacity.Main shaft temperature
Height causes thermal deformation big, influences spindle processing precision.
The content of the invention
For overcome the deficiencies in the prior art, one of the objects of the present invention is to provide a kind of lathe spindle air-cooled structure,
It can solve the problems, such as inconvenience of radiating.
An object of the present invention adopts the following technical scheme that realization：
A kind of lathe spindle air-cooled structure, including main body and upper bearing (metal), the upper bearing (metal) is fixed on the main body, the master
Body is equipped with upper gas circuit, upper gas passage and several upper vent holes, the upper gas circuit and the upper vent hole respectively with it is described it is upper
Gas passage connects, and in a ring, the upper vent hole inside the upper bearing (metal) with connecting, the upper vent hole for the upper gas passage
It is uniformly distributed on the upper gas passage, the upper vent hole is towards the upper bearing (metal), a blowning installation and the upper gas circuit
Connection, makes air-flow blow to the upper bearing (metal) from the upper vent hole through upper gas passage to reduce temperature.
Further, the main body includes spacer and sleeve, and the spacer is fixed in the sleeve, the spacer and set
Cylinder is respectively equipped with groove, and gas passage, the lathe spindle air-cooled structure is formed between the groove and further includes sealing ring,
The upper sealing ring is between the spacer and the sleeve and positioned at the upper gas passage proximate.
Further, the upper gas passage is perpendicular to the upper gas circuit.
Further, the upper gas passage is in round table-like.
Further, the axis of the spacer, sleeve and upper bearing (metal) is on the same line.
Further, the main body is additionally provided with centre bore, and the centre bore is cylindrical.
Further, the main body is additionally provided with lower gas circuit, lower gas passage and lower venthole, the lower gas circuit and it is described under
Venthole connects respectively with the lower gas passage, and in a ring, the lower venthole is uniformly distributed in institute to the lower gas passage
It states on lower gas passage, the lathe spindle air-cooled structure further includes lower bearing, and the lower bearing is fixed on the main body, described
Lower venthole is towards the lower bearing.
Further, the upper bearing (metal) and the lower bearing are located at the main body opposite sides respectively.
Further, the axis of the upper bearing (metal) and the lower bearing is on the same line.
Further, the lathe spindle air-cooled structure further includes lower seal, and the main body includes spacer and sleeve, institute
It states spacer to be fixed in the sleeve, the lower seal is between the spacer and the sleeve and positioned at the lower gas
Passage proximate.
Compared with prior art, the beneficial effects of the present invention are：
Blowning installation is connected with the upper gas circuit, and air-flow is made after, to be blowed to through upper gas passage from the upper vent hole
The upper bearing (metal), air are flowed through inside upper bearing (metal), take away the heat of upper bearing (metal), are blown out via the gap of rear end, are reached cooling
Effect blows away steam dirt in the gap of rear and front end, realizes the effect of air curtain sealing.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow the above and other objects, features and advantages of the present invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and coordinate attached drawing, detailed description are as follows.
Description of the drawings
Fig. 1 is the sectional view of a preferred embodiment in lathe spindle air-cooled structure of the present invention；
Fig. 2 is the sectional view of lathe spindle air-cooled structure A-A shown in Fig. 1；
Fig. 3 is the sectional view of lathe spindle air-cooled structure B-B shown in Fig. 1.
In figure：100th, lathe spindle air-cooled structure；10th, main body；11st, spacer；12nd, sleeve；13rd, centre bore；14th, upper gas
Road；15th, upper gas passage；16th, upper vent hole；17th, lower gas circuit；18th, lower gas passage；19th, lower venthole；20th, upper sealing ring；
30th, upper bearing (metal)；40th, lower seal；50th, lower bearing.
Specific embodiment
In the following, with reference to attached drawing and specific embodiment, the present invention is described further, it is necessary to which explanation is, not
Under the premise of conflicting, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination
Example.
It should be noted that when component is referred to as " being fixed on " another component, it can be directly on another component
Or there may also be components placed in the middle.When a component is considered as " connection " another component, it can be directly connected to
To another component or it may be simultaneously present component placed in the middle.When a component is considered as " being arranged at " another component, it
Can be set directly on another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical
", " horizontal ", "left", "right" and similar statement for illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood meaning of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
Please refer to Fig.1-3, a kind of lathe spindle air-cooled structure 100 include main body 10, upper sealing ring 20, upper bearing (metal) 30, under
Sealing ring 40 and lower bearing 50.
Main body 10 includes spacer 11 and sleeve 12, and the spacer 11 is fixed in the sleeve 12, and main body 10 is equipped with center
Hole 13, the spacer 11 and sleeve 12 are respectively equipped with groove, and gas passage 15 and lower gas passage are formed between the groove
18, upper gas passage 15 and lower gas passage 18 are surrounded on centre bore 13, and centre bore 13 is cylindrical, upper gas passage 15 and under
Gas passage 18 is in round table-like；On gas passage 15 and lower gas passage 18 be located at 10 opposite sides of main body；Main body 10 is additionally provided with
Upper gas circuit 14 and several upper vent holes 16, the upper gas circuit 14 and the upper vent hole 16 connect respectively with the upper gas passage 15
Logical, the upper vent hole 16 is uniformly distributed on the upper gas passage 15；Main body 10 is additionally provided with lower gas circuit 17 and several lower logical
Stomata 19, the lower gas circuit 17 and the lower venthole 19 connect respectively with the lower gas passage 18, the lower venthole 19
It is uniformly distributed on the lower gas passage 18.On gas passage 15 perpendicular to the upper gas circuit 14, lower gas passage 18 is vertical
In the lower gas circuit 17.
When assembling lathe spindle air-cooled structure 100, upper bearing (metal) 30 and lower bearing 50 are fixed on the main body 10, upper bearing (metal) 30
It is located at 10 opposite sides of main body respectively with the lower bearing 50, the axis of the upper bearing (metal) 30 and the lower bearing 50 is same
On one straight line；The upper sealing ring 20 is between the spacer 11 and the sleeve 12 and attached positioned at the upper gas passage 15
Closely, the upper vent hole 16 is connected towards the upper bearing (metal) 30, a blowning installation with the upper gas circuit 14, makes air-flow through upper gas
Passage 15 blows to the upper bearing (metal) 30, air is flowed through inside upper bearing (metal) 30, takes away upper bearing (metal) after from the upper vent hole 16
30 heat blows out via the gap of rear end, achievees the effect that cooling, steam dirt in the gap of rear and front end is blown away, realizes
The effect of air curtain sealing；Lower seal 40 is between the spacer 11 and the sleeve 12 and positioned at the lower gas passage 18
Near, it prevents compressed air leakage, improves blowing effect, lower venthole 19 is towards the lower bearing 50, a blowning installation and institute
It states lower gas circuit 17 to connect, makes air-flow that after, the lower bearing 50 is blowed to from the lower venthole 19 through lower gas passage 18, from
The lower venthole 19 blows to the lower bearing 50, and the spacer 11, sleeve 12, the axis of upper bearing (metal) 30 and lower bearing 50 are same
On one straight line.
The above embodiment is only the preferred embodiment of the present invention, it is impossible to the scope of protection of the invention is limited with this,
The variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed scope.
Claims (10)
1. a kind of lathe spindle air-cooled structure, including main body and upper bearing (metal), it is characterised in that：The upper bearing (metal) is fixed on the master
Body, the main body are equipped with upper gas circuit, upper gas passage and several upper vent holes, the upper gas circuit and the upper vent hole respectively with
The upper gas passage connection, in a ring, the upper vent hole is described with being connected inside the upper bearing (metal) for the upper gas passage
Upper vent hole is uniformly distributed on the upper gas passage, and the upper vent hole is towards the upper bearing (metal), a blowning installation and institute
Gas circuit connection is stated, air-flow is made to blow to the upper bearing (metal) from the upper vent hole through upper gas passage to reduce temperature.
2. lathe spindle air-cooled structure as described in claim 1, it is characterised in that：The main body includes spacer and sleeve, institute
Spacer to be stated to be fixed in the sleeve, the spacer and sleeve are respectively equipped with groove, and gas passage is formed between the groove,
The lathe spindle air-cooled structure further includes sealing ring, and the upper sealing ring is between the spacer and the sleeve and position
In the upper gas passage proximate.
3. lathe spindle air-cooled structure as claimed in claim 2, it is characterised in that：The upper gas passage is on described
Gas circuit.
4. lathe spindle air-cooled structure as claimed in claim 3, it is characterised in that：The upper gas passage is in round table-like.
5. lathe spindle air-cooled structure as claimed in claim 2, it is characterised in that：The axis of the spacer, sleeve and upper bearing (metal)
Line is on the same line.
6. lathe spindle air-cooled structure as described in claim 1, it is characterised in that：The main body is additionally provided with centre bore, described
Centre bore is cylindrical.
7. lathe spindle air-cooled structure as described in claim 1, it is characterised in that：The main body be additionally provided with lower gas circuit, it is lower
Gas passage and lower venthole, the lower gas circuit and the lower venthole connect respectively with the lower gas passage, the lower gas
In a ring, the lower venthole is uniformly distributed on the lower gas passage passage, and the lathe spindle air-cooled structure further includes
Lower bearing, the lower bearing are fixed on the main body, and the lower venthole is towards the lower bearing.
8. lathe spindle air-cooled structure as claimed in claim 7, it is characterised in that：The upper bearing (metal) and lower bearing difference
Positioned at the main body opposite sides.
9. lathe spindle air-cooled structure as claimed in claim 7, it is characterised in that：The axis of the upper bearing (metal) and the lower bearing
Line is on the same line.
10. lathe spindle air-cooled structure as claimed in claim 7, it is characterised in that：The lathe spindle air-cooled structure also wraps
Lower seal is included, the main body includes spacer and sleeve, and the spacer is fixed in the sleeve, and the lower seal is located at institute
It states between spacer and the sleeve and positioned at the lower gas passage proximate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711319940.7A CN108097986B (en) | 2017-12-12 | 2017-12-12 | Lathe spindle air cooling structure |
| PCT/CN2018/115374 WO2019114483A1 (en) | 2017-12-12 | 2018-11-14 | Air cooling structure for lathe spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711319940.7A CN108097986B (en) | 2017-12-12 | 2017-12-12 | Lathe spindle air cooling structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108097986A true CN108097986A (en) | 2018-06-01 |
| CN108097986B CN108097986B (en) | 2020-01-14 |
Family
ID=62216672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711319940.7A Active CN108097986B (en) | 2017-12-12 | 2017-12-12 | Lathe spindle air cooling structure |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108097986B (en) |
| WO (1) | WO2019114483A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019114483A1 (en) * | 2017-12-12 | 2019-06-20 | 广州市昊志机电股份有限公司 | Air cooling structure for lathe spindle |
| CN112658800A (en) * | 2021-03-18 | 2021-04-16 | 西安兴航航空科技股份有限公司 | Cooling component in high-power electric spindle rotor for machining aviation structural part |
| WO2021147640A1 (en) * | 2020-01-21 | 2021-07-29 | 广州市昊志机电股份有限公司 | Electric spindle cooled using clamp |
| CN113483024A (en) * | 2021-07-14 | 2021-10-08 | 珠海格力电器股份有限公司 | Sliding sleeve structure and electric spindle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102515080B1 (en) * | 2020-11-24 | 2023-03-27 | 김대식 | Air cooling type spindle structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2370213B8 (en) * | 2010-04-13 | 2013-02-01 | Automat Industrial S.L. | "LUBRICATION AND REFRIGERATION SYSTEM OF A CORRESPONDING COLD WIRE LAMINATION MACHINE AND PROCEDURE" |
| CN104662316A (en) * | 2012-09-24 | 2015-05-27 | Ntn株式会社 | Cooling structure for bearing device |
| JP5776753B2 (en) * | 2013-11-25 | 2015-09-09 | 日本精工株式会社 | Bearing device and spindle device for machine tool |
| CN106104036A (en) * | 2014-03-22 | 2016-11-09 | Ntn株式会社 | The cooling construction of bearing arrangement |
| CN107076212A (en) * | 2014-11-06 | 2017-08-18 | Ntn株式会社 | The cooling construction of bearing arrangement |
| CN207709891U (en) * | 2017-12-12 | 2018-08-10 | 广州市昊志机电股份有限公司 | Lathe spindle air-cooled structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015117820A (en) * | 2013-11-18 | 2015-06-25 | Ntn株式会社 | Cooling structure of bearing device |
| CN108097986B (en) * | 2017-12-12 | 2020-01-14 | 广州市昊志机电股份有限公司 | Lathe spindle air cooling structure |
-
2017
- 2017-12-12 CN CN201711319940.7A patent/CN108097986B/en active Active
-
2018
- 2018-11-14 WO PCT/CN2018/115374 patent/WO2019114483A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2370213B8 (en) * | 2010-04-13 | 2013-02-01 | Automat Industrial S.L. | "LUBRICATION AND REFRIGERATION SYSTEM OF A CORRESPONDING COLD WIRE LAMINATION MACHINE AND PROCEDURE" |
| CN104662316A (en) * | 2012-09-24 | 2015-05-27 | Ntn株式会社 | Cooling structure for bearing device |
| JP5776753B2 (en) * | 2013-11-25 | 2015-09-09 | 日本精工株式会社 | Bearing device and spindle device for machine tool |
| CN106104036A (en) * | 2014-03-22 | 2016-11-09 | Ntn株式会社 | The cooling construction of bearing arrangement |
| CN107076212A (en) * | 2014-11-06 | 2017-08-18 | Ntn株式会社 | The cooling construction of bearing arrangement |
| CN207709891U (en) * | 2017-12-12 | 2018-08-10 | 广州市昊志机电股份有限公司 | Lathe spindle air-cooled structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019114483A1 (en) * | 2017-12-12 | 2019-06-20 | 广州市昊志机电股份有限公司 | Air cooling structure for lathe spindle |
| WO2021147640A1 (en) * | 2020-01-21 | 2021-07-29 | 广州市昊志机电股份有限公司 | Electric spindle cooled using clamp |
| CN112658800A (en) * | 2021-03-18 | 2021-04-16 | 西安兴航航空科技股份有限公司 | Cooling component in high-power electric spindle rotor for machining aviation structural part |
| CN112658800B (en) * | 2021-03-18 | 2021-06-18 | 西安兴航航空科技股份有限公司 | Cooling component in high-power electric spindle rotor for machining aviation structural part |
| CN113483024A (en) * | 2021-07-14 | 2021-10-08 | 珠海格力电器股份有限公司 | Sliding sleeve structure and electric spindle |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019114483A1 (en) | 2019-06-20 |
| CN108097986B (en) | 2020-01-14 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20180601 Assignee: Science City (Guangzhou) Finance Leasing Co.,Ltd. Assignor: GUANGZHOU HAOZHI INDUSTRIAL Co.,Ltd. Contract record no.: X2020980004919 Denomination of invention: Air cooling structure of lathe spindle Granted publication date: 20200114 License type: Exclusive License Record date: 20200813 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Air cooling structure of lathe spindle Effective date of registration: 20200814 Granted publication date: 20200114 Pledgee: Science City (Guangzhou) Finance Leasing Co.,Ltd. Pledgor: GUANGZHOU HAOZHI INDUSTRIAL Co.,Ltd. Registration number: Y2020980005000 |
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Assignee: Science City (Guangzhou) Finance Leasing Co.,Ltd. Assignor: GUANGZHOU HAOZHI INDUSTRIAL Co.,Ltd. Contract record no.: X2020980004919 Date of cancellation: 20220825 |
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| EC01 | Cancellation of recordation of patent licensing contract | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220826 Granted publication date: 20200114 Pledgee: Science City (Guangzhou) Finance Leasing Co.,Ltd. Pledgor: GUANGZHOU HAOZHI INDUSTRIAL Co.,Ltd. Registration number: Y2020980005000 |
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