CN109571226A - The perpendicular burnishing device and polishing process and purposes of a kind of 3D curve surface work pieces - Google Patents
The perpendicular burnishing device and polishing process and purposes of a kind of 3D curve surface work pieces Download PDFInfo
- Publication number
- CN109571226A CN109571226A CN201811573201.5A CN201811573201A CN109571226A CN 109571226 A CN109571226 A CN 109571226A CN 201811573201 A CN201811573201 A CN 201811573201A CN 109571226 A CN109571226 A CN 109571226A
- Authority
- CN
- China
- Prior art keywords
- work pieces
- curve surface
- surface work
- rotary table
- fixture
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a kind of perpendicular burnishing device of 3D curve surface work pieces and polishing process and purposes, the perpendicular burnishing device of 3D curve surface work pieces, including can fix the fixtures of 3D curve surface work pieces, lower turntable, gear, transmission shaft, with the top rotary table of burnishing stick, transmission shaft, gear, lower rotary table, top rotary table rotate synchronously；Polishing process, comprising the following steps: the first step, the installation of 3D curve surface work pieces, burnishing stick contacts 3D curve surface work pieces, and second step starts drive dynamic control device, polishing powder solution is injected, starts to polish 3D curve surface work pieces, third step, close drive dynamic control device, remove 3D curve surface work pieces, the 4th step, fixed 3D curve surface work pieces, burnishing stick contacts 3D curve surface work pieces, repeats second and third step to polishing and completes；3D curve surface work pieces can be used for making phone housing or frame.The present invention has the advantages that workpiece polishing efficiency quality is high, and disassembling, assembling and replacing is easy to maintain, and polishing process is simple, and 3D curve surface work pieces use the electromagnetism that will not shield high-frequency communication signal as phone housing or frame.
Description
[technical field]
The present invention relates to the technical field of curve surface work pieces and polishing technology, the perpendicular polishing of especially a kind of 3D curve surface work pieces is filled
It sets and the technical field of polishing process and purposes.
[background technique]
With the rapid development of the communication technology, our cell phone network communication technology develops to 3G by original 2G and upgrades again
The 4G epoch till now.Through the whole journey, our surfing Internet with cell phone speed is constantly being promoted, this finally needs wireless communication technique branch
It holds.In the epoch of this information huge explosion, user is increasing for the demand of mobile data flow, but logical using LTE at present
The 4G network transmission speed of news standard can no longer meet the requirement of the following communications market, so the 5G epoch are at hand.
Most phone housing, frame are all substantially metal material currently on the market, although good hand touch, beauty, metal pair
Transmitting and reception of the antenna to signal can be seriously affected in the electromagnetic shielding of electromagnetic wave.4G signal working frequency probably exists
The signal frequency of 700MHZ, this frequency range are relatively low, and metal is not very serious to the magnetic field shielding phenomenon of this wave band electromagnetic wave.
But 5G signal in band working frequency is 3.5GHZ, and wavelength is grade, and the electromagnetic wave of this wave band is for metal shell and frame
It is very sensitive, it may occur that serious electromagnetic shielding phenomenon, thus cause mobile phone can not normal transmission and receive signal, and in order to
Prevent manpower from blocking to antenna, interior of mobile phone antenna is all mounted on substantially at top and lower end frame.With 3D bend glass or
Crystal curved surface frame replaces original metal edge frame, not only beautiful, fashion but also has completely solved metal edge frame to the screen of signal in this way
Cover problem.
3D bend glass or crystal curved surface frame shape are cuboid, and 12 ribs and vertex of cuboid are all bent
Face has certain radian.It not only needs to polish flat face when producing this frame workpiece, but also between face and face
Curved surface at the radian of handover will also be polished.The polished leather of traditional burnishing device be plane can not be bent to such 3D
Face workpiece is effectively polished, and needs work piece vertically to get up to carry out polishing operation when curved surface is polished, at this moment by tradition
The fixture erratic star wheel and polished leather and its polishing process of polishing are unable to satisfy process requirements.
[summary of the invention]
The object of the invention is to solve the problems of the prior art, propose a kind of 3D curve surface work pieces perpendicular burnishing device and
Polishing process and purposes can make workpiece polishing efficiency quality high, and work piece effect is good, erect the job control of burnishing device with
And disassembling, assembling and replacing is easy to maintain, polishing process is simple, and 3D curve surface work pieces are applicable to phone housing or frame use will not be to 5G
High-frequency communication signal electromagnetic shielding.
To achieve the above object, the invention proposes a kind of perpendicular burnishing devices of 3D curve surface work pieces, including fixture, lower turn
Platform, gear, transmission shaft, top rotary table, the fixture are mounted on lower turntable, and fixture is equipped with several be uniformly distributed and cross section is in
The workpiece installation slot of annular playground shape has inserted 3D curve surface work pieces on workpiece installation slot, and the periphery of the lower turntable is equipped with
The driving cog being meshed with gear, the transmission shaft and gear are coupled, and transmission shaft lower end is connected with drive dynamic control device, are passed
Moving axis upper end is connected with top rotary table cooperation, and the top rotary table is equipped with several polishing powder solution injection orifices, and top rotary table bottom is equipped with
Several is in the equally distributed burnishing stick of hairbrush shape.
Preferably, the periphery of the transmission shaft is equipped with several card slots, the top rotary table is positioned equipped with transmission shaft
Mounting hole, rotation axis positioning hole inner wall are equipped with several strips being adapted with card slot.
Preferably, the clamp base is equipped with several screw mounting holes, with several fastening spiral shells between fixture and lower turntable
Nail is connected.
Preferably, the height of the 3D curve surface work pieces is greater than the depth of workpiece installation slot, the depth of the workpiece installation slot
Degree is less than the height of fixture.
Preferably, the fixture cylindrical form, fixture are made of acrylic board, the top rotary table is located on fixture
Side.
To achieve the above object, the invention proposes the polishing processes that a kind of 3D curve surface work pieces erect burnishing device, including with
Under several steps: the first step, 3D curve surface work pieces lower half portion be inserted into workpiece installation slot, lower top rotary table position make burnishing stick packet
The 3D curve surface work pieces top half being firmly exposed to outside workpiece installation slot；Second step starts drive dynamic control device, injects to top rotary table
Enough polishing powder solution, burnishing stick polish the 3D curve surface work pieces top half being exposed to outside workpiece installation slot；Third step,
Drive dynamic control device is closed, top rotary table position is raised, removes 3D curve surface work pieces；4th step inserts 3D curve surface work pieces top half
Enter workpiece installation slot, lowers top rotary table position and burnishing stick is made to encase the 3D curve surface work pieces lower half being exposed to outside workpiece installation slot
Point, second, third above-mentioned step is repeated until polishing is completed.
Preferably, the burnishing stick is replaced after polishing several 3D curve surface work pieces.
Preferably, the revolving speed control of the top rotary table, in 3-5rpm, the revolving speed of the lower turntable is controlled in 30-50rpm.
To achieve the above object, the invention proposes a kind of purposes of 3D curve surface work pieces, the 3D curve surface work pieces by glass or
Crystal material is made suitable for phone housing or frame use.
Beneficial effects of the present invention: the 3D curve surface work pieces can be used for phone housing or side made of glass or crystal material
Frame uses, will not be to the electromagnetic shielding of the high-frequency communication signal of 5G；It is mutually fitted by being opened up on fixture with 3D curve surface work pieces curved surface
The workpiece installation slot answered is for vertically placing fixed 3D curve surface work pieces, the polishing treatment convenient for burnishing stick to 3D curve surface work pieces；It throws
Striation is in a strip shape, can come into full contact with 3D curve surface work pieces and realize vertical polishing treatment；By being equipped with polishing powder solution on top rotary table
Injection orifice facilitates injection polishing powder solution going on smoothly so as to polishing；Transmission shaft upper and lower end is controlled with top rotary table, driving respectively
Device processed is connected, and transmission shaft and gear are coupled, and teeth directional is driven between gear and lower turntable, convenient for controlling perpendicular burnishing device
Working condition；The perpendicular burnishing device fastening effect is good, and disassembling, assembling and replacing is easy to maintain, and structure is simple, and work smoothness are good；The polishing
Simple process is reasonable, and polishing efficiency quality is high.
Feature and advantage of the invention will be described in detail by embodiment combination attached drawing.
[Detailed description of the invention]
Fig. 1 is a kind of structural schematic diagram of the perpendicular burnishing device of 3D curve surface work pieces of the present invention；
Fig. 2 is the present invention a kind of fixture and lower turntable schematic diagram of the perpendicular burnishing device of 3D curve surface work pieces；
Fig. 3 is a kind of fixture top view of the perpendicular burnishing device of 3D curve surface work pieces of the present invention；
Fig. 4 is a kind of fixture cross-sectional view of the perpendicular burnishing device of 3D curve surface work pieces of the present invention；
Fig. 5 is a kind of 3D curve surface work pieces schematic diagram of the perpendicular burnishing device of 3D curve surface work pieces of the present invention.
In figure: turntable, 3- gear, 4-3D curve surface work pieces, 5- transmission shaft, 6- top rotary table, 11- workpiece peace under 1- fixture, 2-
Tankage, 12- screw mounting hole, 21- fastening screw, 51- card slot, 61- rotation axis positioning hole, 62- strip, 63- polishing powder
Solution injection orifice, 64- burnishing stick.
[specific embodiment]
Refering to fig. 1 to Fig. 5, the perpendicular burnishing device and polishing process and purposes of a kind of 3D curve surface work pieces of the present invention, 3D curved surface
The perpendicular burnishing device of workpiece, including fixture 1, lower turntable 2, gear 3, transmission shaft 5, top rotary table 6, fixture 1 are mounted on lower turntable 2
On, fixture 1 be equipped with it is several be uniformly distributed and the workpiece installation slot 11 of cross section playground shape in a ring, on workpiece installation slot 11
3D curve surface work pieces 4 are inserted, the periphery of lower turntable 2 is equipped with the driving cog being meshed with gear 3, and transmission shaft 5 is threaded through gear 3
Above and with positioning pin to fix, 5 lower end of transmission shaft is connected with drive dynamic control device, and 5 upper end of transmission shaft is connected with the cooperation of top rotary table 6,
Top rotary table 6 is equipped with several polishing powder solution injection orifices 63, and it is in the equally distributed polishing of hairbrush shape that 6 bottom of top rotary table, which is equipped with several,
Item 64 is set on the periphery of transmission shaft 5 there are four card slot 51, and top rotary table 6 is equipped with transmission shaft positioning hole 61, and rotation axis is fixed
Position 61 inner wall of mounting hole is equipped with four strips 62 being adapted with card slot 51, strip 62 when transmission shaft 5 and top rotary table 6 are coupled
It is just caught in card slot 51,1 bottom of fixture is set there are three screw mounting hole 12, with three fastening spiral shells between fixture 1 and lower turntable 2
Nail 21 is connected, and the height of 3D curve surface work pieces 4 is greater than the depth of workpiece installation slot 11, and the depth of workpiece installation slot 11 is less than fixture 1
Height, 1 cylindrical form of fixture, fixture 1 is made of acrylic board, and top rotary table 6 is located at 1 top of fixture, drive dynamic control device
It is connected with each other by the power supply of belt switch, decelerating motor, decelerating motor is connected with transmission shaft 5, and decelerating motor driving, which drives, to be passed
Moving axis 5 rotates, and 5 rotation driven gear 3 of transmission shaft and top rotary table 6 rotate, and lower turntable 2 and fixture 1 follow gear 3 to rotate, polishing
Powder solution injection orifice 63 injects polishing powder solution, and burnishing stick 64 polishes 3D curve surface work pieces 4；
3D curve surface work pieces erect the polishing process of burnishing device, including the following steps:
Workpiece installation slot 11 is inserted into the first step, 4 lower half portion of 3D curve surface work pieces, lowers 6 position of top rotary table and makes burnishing stick
64 encase 4 top half of 3D curve surface work pieces being exposed to outside workpiece installation slot 11；
Second step starts drive dynamic control device, injects enough polishing powder solution to top rotary table 6, and burnishing stick 64 is to being exposed to
4 top half of 3D curve surface work pieces outside workpiece installation slot 11 is polished；
Third step closes drive dynamic control device, raises 6 position of top rotary table, removes 3D curve surface work pieces 4；
4 top half of 3D curve surface work pieces is inserted into workpiece installation slot 11 by the 4th step, is lowered 6 position of top rotary table and to polish
Item 64 encases 4 lower half portion of 3D curve surface work pieces being exposed to outside workpiece installation slot 11, repeats second, third above-mentioned step until throwing
Light is completed, wherein and burnishing stick 64 is replaced after polishing several 3D curve surface work pieces 4, and the revolving speed of top rotary table 6 is controlled in 3-5rpm, under
The revolving speed of turntable 2 is controlled in 30-50rpm；
The purposes of 3D curve surface work pieces, the 3D curve surface work pieces 4 are made of glass or crystal material suitable for phone housing or side
Frame uses.
The perpendicular burnishing device and polishing process and purposes of a kind of 3D curve surface work pieces of the present invention, the 3D curve surface work pieces 4 are by glass
Or can be used for phone housing or frame use made of crystal material, it will not be to the electromagnetic shielding of the high-frequency communication signal of 5G；It is logical
The workpiece installation slot 11 for opening up on fixture 1 and being adapted with 4 curved surface of 3D curve surface work pieces is crossed for vertically placing fixed 3D curved surface work
Part 4, the polishing treatment convenient for burnishing stick 64 to 3D curve surface work pieces 4；Burnishing stick 64 is in a strip shape, can come into full contact with 3D curve surface work pieces 4
Realize vertical polishing treatment；By on top rotary table 6 be equipped with polishing powder solution injection orifice 63, facilitate injection polishing powder solution so as to
Polishing is gone on smoothly；5 upper and lower end of transmission shaft is connected with top rotary table 6, drive dynamic control device respectively, and transmission shaft 5 and gear 3 are matched
Installation is closed, teeth directional is driven between gear 3 and lower turntable 2, convenient for controlling the working condition of perpendicular burnishing device；The perpendicular burnishing device is tight
Gu effect is good, disassembling, assembling and replacing is easy to maintain, and structure is simple, and work smoothness are good；The polishing process advantages of simple, polishing efficiency matter
Amount is high.
Above-described embodiment is the description of the invention, is not limitation of the invention, after any pair of simple transformation of the present invention
Scheme all belong to the scope of protection of the present invention.
Claims (9)
1. a kind of 3D curve surface work pieces erect burnishing device, including gear (3), transmission shaft (5), top rotary table (6), it is characterised in that: also
Including fixture (1) and lower turntable (2), the fixture (1) is mounted on lower turntable (2), and fixture (1) is equipped with several be uniformly distributed
And the workpiece installation slot (11) of cross section playground shape in a ring, 3D curve surface work pieces (4), institute have been inserted on workpiece installation slot (11)
The periphery for stating lower turntable (2) is equipped with the driving cog being meshed with gear (3), the transmission shaft (5) and gear (3) cooperation peace
Dress, transmission shaft (5) lower end are connected with drive dynamic control device, and transmission shaft (5) upper end is connected with top rotary table (6) cooperation, and described upper turn
Disk (6) is equipped with several polishing powder solution injection orifices (63), and it is in the equally distributed throwing of hairbrush shape that top rotary table (6) bottom, which is equipped with several,
Striation (64).
2. 3D curve surface work pieces as described in claim 1 erect burnishing device, it is characterised in that: the periphery of the transmission shaft (5)
It is equipped with several card slots (51), the top rotary table (6) is equipped with transmission shaft positioning hole (61), rotation axis positioning hole
(61) inner wall is equipped with several strips (62) being adapted with card slot (51).
3. 3D curve surface work pieces as described in claim 1 erect burnishing device, it is characterised in that: the fixture (1) is if bottom is equipped with
Dry screw mounting hole (12) is connected between fixture (1) and lower turntable (2) with several fastening screws (21).
4. 3D curve surface work pieces as described in claim 1 erect burnishing device, it is characterised in that: the height of the 3D curve surface work pieces (4)
Degree is greater than the depth of workpiece installation slot (11), and the depth of the workpiece installation slot (11) is less than the height of fixture (1).
5. 3D curve surface work pieces as described in claim 1 erect burnishing device, it is characterised in that: fixture (1) cylindrical form,
Fixture (1) is made of acrylic board, and the top rotary table (6) is located above fixture (1).
6. the polishing process that a kind of 3D curve surface work pieces as described in claim 1 erect burnishing device, it is characterised in that: including following
Several steps:
Workpiece installation slot (11) are inserted into the first step, 3D curve surface work pieces (4) lower half portion, lower top rotary table (6) position and to polish
Item (64), which encases, is exposed to 3D curve surface work pieces (4) top half of workpiece installation slot (11) outside；
Second step starts drive dynamic control device, injects enough polishing powder solution to top rotary table (6), and burnishing stick (64) is to being exposed to
3D curve surface work pieces (4) top half of workpiece installation slot (11) outside is polished；
Third step closes drive dynamic control device, raises top rotary table (6) position, removes 3D curve surface work pieces (4)；
3D curve surface work pieces (4) top half is inserted into workpiece installation slot (11) by the 4th step, is lowered top rotary table (6) position and to throw
Striation (64), which encases, is exposed to 3D curve surface work pieces (4) lower half portion of workpiece installation slot (11) outside, repeats second, third above-mentioned step
It is rapid to be completed until polishing.
7. polishing process as claimed in claim 6, it is characterised in that: the burnishing stick (64) is polishing several 3D curve surface work pieces
(4) it replaces afterwards.
8. polishing process as claimed in claim 6, it is characterised in that: the revolving speed of the top rotary table (6) is controlled in 3-5rpm, institute
The revolving speed for stating lower turntable (2) is controlled in 30-50rpm.
9. 3D curve surface work pieces as claimed in any one of claims 1 to 8, it is characterised in that: the 3D curve surface work pieces (4) are by glass
Or crystal material is made suitable for phone housing or frame use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811573201.5A CN109571226A (en) | 2018-12-21 | 2018-12-21 | The perpendicular burnishing device and polishing process and purposes of a kind of 3D curve surface work pieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811573201.5A CN109571226A (en) | 2018-12-21 | 2018-12-21 | The perpendicular burnishing device and polishing process and purposes of a kind of 3D curve surface work pieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109571226A true CN109571226A (en) | 2019-04-05 |
Family
ID=65931246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811573201.5A Pending CN109571226A (en) | 2018-12-21 | 2018-12-21 | The perpendicular burnishing device and polishing process and purposes of a kind of 3D curve surface work pieces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109571226A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203045486U (en) * | 2013-01-23 | 2013-07-10 | 东莞市瑞必达科技有限公司 | Mobile-phone screen cover-plate polishing machine |
| CN105458946A (en) * | 2016-01-05 | 2016-04-06 | 寇珑璠 | Polishing disk used for polishing curved materials |
| CN205290712U (en) * | 2016-01-05 | 2016-06-08 | 寇珑璠 | A polishing dish for polishing curved surface material |
| CN105965344A (en) * | 2016-07-11 | 2016-09-28 | 河南康耀电子股份有限公司 | Polishing device for side surface of mobile phone glass |
| CN205799114U (en) * | 2016-06-17 | 2016-12-14 | 浙江星星科技股份有限公司 | On a kind of mobile phone faceplate, blind hole processing clears off machine |
| CN106239339A (en) * | 2016-07-27 | 2016-12-21 | 湖南宇晶机器股份有限公司 | A kind of curved surface polishing machine |
| CN107020560A (en) * | 2017-04-18 | 2017-08-08 | 东莞华清光学科技有限公司 | A kind of 3D products clear off equipment and clear off method |
| CN207372923U (en) * | 2017-07-20 | 2018-05-18 | 深圳市创智自动化有限公司 | Curved surface mobile phone screen clears off machine |
| CN108381330A (en) * | 2018-03-16 | 2018-08-10 | 中国工程物理研究院激光聚变研究中心 | A kind of burnishing device and polissoir |
| CN108857822A (en) * | 2017-05-15 | 2018-11-23 | 蓝思科技（长沙）有限公司 | Polissoir, polishing clamp and its polishing method |
-
2018
- 2018-12-21 CN CN201811573201.5A patent/CN109571226A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203045486U (en) * | 2013-01-23 | 2013-07-10 | 东莞市瑞必达科技有限公司 | Mobile-phone screen cover-plate polishing machine |
| CN105458946A (en) * | 2016-01-05 | 2016-04-06 | 寇珑璠 | Polishing disk used for polishing curved materials |
| CN205290712U (en) * | 2016-01-05 | 2016-06-08 | 寇珑璠 | A polishing dish for polishing curved surface material |
| CN205799114U (en) * | 2016-06-17 | 2016-12-14 | 浙江星星科技股份有限公司 | On a kind of mobile phone faceplate, blind hole processing clears off machine |
| CN105965344A (en) * | 2016-07-11 | 2016-09-28 | 河南康耀电子股份有限公司 | Polishing device for side surface of mobile phone glass |
| CN106239339A (en) * | 2016-07-27 | 2016-12-21 | 湖南宇晶机器股份有限公司 | A kind of curved surface polishing machine |
| CN107020560A (en) * | 2017-04-18 | 2017-08-08 | 东莞华清光学科技有限公司 | A kind of 3D products clear off equipment and clear off method |
| CN108857822A (en) * | 2017-05-15 | 2018-11-23 | 蓝思科技（长沙）有限公司 | Polissoir, polishing clamp and its polishing method |
| CN207372923U (en) * | 2017-07-20 | 2018-05-18 | 深圳市创智自动化有限公司 | Curved surface mobile phone screen clears off machine |
| CN108381330A (en) * | 2018-03-16 | 2018-08-10 | 中国工程物理研究院激光聚变研究中心 | A kind of burnishing device and polissoir |
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 310000 No. 578, 20 Baiyang Street, Hangzhou Economic and Technological Development Zone, Hangzhou, Zhejiang Province Applicant after: Hangzhou meidikai Photoelectric Technology Co., Ltd. Address before: 310000 No. 578, 20 Baiyang Street, Hangzhou Economic and Technological Development Zone, Hangzhou, Zhejiang Province Applicant before: Hangzhou Meidi Kay Photoelectric Technology Co. Ltd. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190405 |
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| RJ01 | Rejection of invention patent application after publication |