CN106863137A - Grinding panel surface mill skin shoveling device - Google Patents
Grinding panel surface mill skin shoveling device Download PDFInfo
- Publication number
- CN106863137A CN106863137A CN201710051353.8A CN201710051353A CN106863137A CN 106863137 A CN106863137 A CN 106863137A CN 201710051353 A CN201710051353 A CN 201710051353A CN 106863137 A CN106863137 A CN 106863137A
- Authority
- CN
- China
- Prior art keywords
- scraper
- panel surface
- shoveling device
- mill skin
- rotating disk
- 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
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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
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/017—Devices or means for dressing, cleaning or otherwise conditioning lapping tools
Abstract
One kind grinding panel surface mill skin shoveling device, including support, the support include horizontally disposed crossbeam and vertically disposed column, doctor assemblies are provided with the rack beam；The doctor assemblies include the scraper and depression bar that are separately mounted on crossbeam and can stretch in vertical direction；It is provided with the vertical lower of the rack beam to fix the support component of abrasive disk when mill skin is rooted out, the support component includes pedestal and rotating disk, and the scraper is corresponding respectively with depression bar to be crossed on rotating disk both sides and telescopically lean or separate with the surface of the rotating disk in vertical direction；The mill skin shoveling device can automatically be rooted out to the mill skin for grinding panel surface, root out efficiency high and to root out effect good.
Description
Technical field
It is used to enter glass panel with grinding mill skin shoveling device, especially one kind the present invention relates to a kind of milling apparatus
The grinding panel surface of row grinding grinds the shoveling device of skin.
Background technology
Traditional electronic equipment such as field such as mobile communication equipment, panel computer, is generally fitted with one layer on its surface
Glass panel, when glass panel laminating is located at the electronic equipment front end face, is generally used to the touch-screen to the electronic equipment
Protected, during the rear end face that it is positioned at the electronic equipment, the rear end face for being generally used to do electronic equipment is sealed
And electronic equipment is protected, i.e., used as the rear end cap of electronic equipment；In addition, it can also be used as touch screen base material
And use.
When being processed to glass panel, it will usually processing is ground to its blank, blank not only may be used by grinding
To remove the surplus on glass panel surface, the dimensional accuracy required for glass panel can also obtained improves the saturating of glass panel
Photosensitiveness and surface smoothness, meanwhile, grinding will also repair the scuffing of glass panel blank surface, wipe colored etc. bad, so as to ensure
Glass panel presentation quality.
Conventional equipment is ground to glass panel for glass grinder, common glass grinder is usually provided with vertical
Straight two abrasive disks being oppositely arranged, abrasive disk working face is coated with mill skin, when the blank to glass panel is processed, leads to
Often the blank of glass panel is placed between upper lower millstone, starts grinder, abrasive disk is rotated, glass panel blank is in mill skin
Frictional force effect under it is gradually thinning, be finally reached required specification；Due to the grinding of glass panel blank, mainly use
The frictional force that exists between blank and mill skin and carry out, after long-term use, mill skin is inevitably thinning because of abrasion or produces
It is raw to damage, and lose corresponding grinding function；Therefore, it is necessary to periodically be changed to mill skin in practice；Because mill skin be usually with
The mode of stickup is covered in the working surface of abrasive disk, when mill skin is changed, to cover new mill skin, it usually needs original to be located at
The mill skin for grinding panel surface is struck off.When being rooted out to original mill skin for needing to change, tradition is mainly by artificial
The mode of perching knife is operated, the mill skin for being pointed to grind panel surface is rooted out and cleared up, and this roots out not only time-consuming with manner of cleaning up
Arduously, and inefficiency, to root out effect also very poor for mill skin.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of grinding panel surface mill skin shoveling device, the mill skin shoveling device
The mill skin for grinding panel surface can automatically be rooted out, root out efficiency high and to root out effect good.
In order to solve the above technical problems, the present invention uses following technical proposals：The grinding panel surface grinds skin shoveling device, bag
Support is included, the support includes horizontally disposed crossbeam and vertically disposed column, is provided with the rack beam and scraped
Knife assembly；The doctor assemblies include the scraper and depression bar that are separately mounted on crossbeam and can stretch in vertical direction；
It is provided with the vertical lower of the rack beam to fix the support component of abrasive disk, the support when mill skin is rooted out
Component includes pedestal and being arranged on base-plates surface and the rotating disk that can be rotated around pedestal, and the scraper and depression bar are corresponding across setting respectively
In rotating disk both sides and telescopically lean or separate with the surface of the rotating disk in vertical direction.
Design concept of the invention, scraper of the present invention includes tool rest and the blade being connected with the tool rest,
The tool rest is inclined plane with the joint face of the blade, and the blade is removably connected with the inclined plane of the tool rest；Institute
Tool rest bottom is stated to be connected with the push rod of a cylinder.
Design concept of the invention, rack beam of the present invention to be installed and be provided with slide rail at the doctor position,
The slide rail is set along the length direction of the rack beam, and the tool rest of the scraper is provided with the chute matched with the slide rail,
The scraper is by the chute and the slide rail slidable connection of the crossbeam.
Design concept of the invention, the present invention is installed in rack beam and be provided with cylinder at the position of depression bar, the pressure
One end of bar is connected with the push rod of the gas thick stick, and the other end of depression bar is provided with the roller that can be leant with the disc surfaces.
Design concept of the invention, the center of turntable protrusion of support component of the present invention is provided with pacifies with abrasive disk
The projection that dress hole size and shape is adapted.
Design concept of the invention, the present invention be provided with parallelly with crossbeam in the bracket upright post be used to it is right
The grinding plate edge mill horizontal scraper rooted out of skin, the horizontal scraper telescopically leant with the edge of the rotating disk or
Separate.
Design concept of the invention, rotating disk of the present invention is also associated with driving the power of turntable rotation to fill
Put, the power set are motor, the motor is also associated with the controlling switch for starting to controlled motor and closing.
Design concept of the invention, doctor assemblies of the present invention are connected with the control for controlling doctor assemblies to act
System switch.
Compared with prior art, the present invention has following beneficial effects：（1）Because the present invention is provided with doctor assemblies and branch
Support component, wherein, the doctor assemblies include scraper and depression bar, and the support component includes pedestal and is arranged on pedestal table
Face and the rotating disk that can be rotated around pedestal；When the mill skin to grinding panel surface is rooted out, abrasive disk is fixed on rotating disk, opened
Dynamic rotating disk, makes rotating disk be rotated around pedestal, pushes the scraper and depression bar, and the depression bar is resisted against the surface of abrasive disk side, and
Scraper is resisted against the surface of abrasive disk opposite side, and because scraper is in contact with the surface of the abrasive disk side, and driven by rotary disc grinds
Mill is rotated, and scraper under pressure, rooted out by the mill skin for being pointed to grind panel surface；Whole process, it is not necessary to any
Manpower, time saving and energy saving, shovel skin efficiency is also higher；（2）Horizontal scraper is also equipped with bracket upright post due to the present invention, the water
Flat scraper telescopically leans with the edge of abrasive disk, such as abrasive disk margin residual have mill skin or other need to root out thing, profit
It can quickly be rooted out with the horizontal scraper, therefore, it is rooted out, and efficiency is higher, and to mill skin to root out effect good；（3）
Connected in certain angle of inclination by the blade and tool rest of scraper of the invention, during being rooted out to mill skin, blade is to mill skin
In certain angle of inclination, mill skin can be made quickly to root out；And it also avoid in scraper and abrasive disk during, it is described to scrape
The damage that pressure produced by knife and abrasive disk is caused to scraper and grinding panel surface.
Brief description of the drawings
Fig. 1 is dimensional structure diagram of the invention；Knot when rotating disk does not install fixed abrasive disk is shown
Structure；
Fig. 2 is dimensional structure diagram of the invention, and when of the invention use is shown, abrasive disk is located at the present invention and turns
Structure when on disk；
Fig. 3 is the dimensional structure diagram of scraper of the invention；The tool rest of scraper of the invention and the phase of blade are shown in figure
To position relationship.
Specific embodiment
Firstly, it is necessary to illustrate, mill skin shoveling device of the invention is mainly used in the grinding to glass grinder
Panel surface mill skin is rooted out, and it has a high degree of automation, various advantages such as time saving and energy saving.
Referring to Fig. 1, grinding panel surface of the invention grinds skin shoveling device, including support 1, and the support 1 has the He of crossbeam 11
Column 12；Doctor assemblies are installed on the crossbeam 11 of the support 1, and doctor assemblies are connected with controlling switch（It is not shown）,
By operating the controlling switch, the action of the doctor assemblies is can control；Set at the vertical lower of the crossbeam 11 of the support 1
It is equipped with support component 3；When the mill skin to grinding panel surface is rooted out, abrasive disk is fixed in support component 3, scraper group
Part leans with grinding panel surface and the mill skin of grinding panel surface is rooted out.
Further say, the crossbeam 11 of support of the invention 1 is horizontally disposed with, and column 12 is vertically arranged, wherein, column 12 has
There are two, it is respectively perpendicular and is positioned close at the both ends of crossbeam 11, and is connected with crossbeam 11.
Doctor assemblies of the invention include scraper 21 and depression bar 22, and the scraper 21 is positioned close to the one end of crossbeam 11,
And depression bar 22 is positioned close to the other end of crossbeam 11, i.e. scraper 21 and depression bar 22 is crossed on the both sides of support component 3；Right
When the mill skin for grinding panel surface is rooted out, abrasive disk is fixed in support component 3, scraper 21 and depression bar 22 bear against
, there is play in a longitudinal direction to prevent abrasive disk in the both sides of abrasive disk.
Heretofore described scraper 21 and depression bar 22 can carry out stretching motion in vertical direction；To ensure scraper 21 and pressure
Bar 22 is in movement in vertical direction；Used as a kind of structure of the invention, scraper of the invention 21 is provided with cylinder in vertical direction
4, and the depression bar 22 is also provided with cylinder 5 in vertical direction, scraper 21 and depression bar 22 are pushed away with cylinder 4 and cylinder 5 respectively
Bar is connected；In the presence of cylinder 4 and cylinder 5, scraper 21 and depression bar 22 can carry out expanding-contracting action in vertical direction；Needing
To it is fixed be located at the top lap surface of the support component 3 mill skin and root out when, start cylinder 4 and cylinder 5, cylinder 4 is gentle
The push rod of cylinder 5 stretches out, scraper 21 and the vertical downward movement of depression bar 22 and leant with grinding panel surface；In the mill of grinding panel surface
Skin is rooted out when finishing, and closes the pusher retracted of cylinder 4 and cylinder 5, cylinder 4 and cylinder 5, and scraper 21 and depression bar 22 are transported vertically upward
Move and be separated with grinding panel surface.It is readily apparent that scraper 21 and depression bar 22 share a cylinder in the present invention, make the gas
Cylinder promotes the scraper 21 and depression bar 22 respectively, also can reach same technique effect.
Referring to Fig. 3, used as the preferred embodiment of scraper of the present invention 21, the scraper 21 includes tool rest 211 and the phase of tool rest 211
Blade 212 even, wherein, the tool rest 211 is inclined plane with the joint face of the blade 212, is provided with the inclined plane
Screwed hole, the blade 212 is detachably connected at the inclined plane of the tool rest 211 by screw；When blade 212 is because permanent
Using and when needing to change, because tool rest 211 and blade 212 are to be detachably connected, therefore, easily blade 212 can be carried out
Change.
Further, scraper of the invention 21 is with cylinder 4 when being connected, bottom and the cylinder 4 of the tool rest 211
Push rod is connected；So, during work, the push rod of cylinder 4 promotes tool rest 211 to move downward, and scraper 21 is overall to be moved downward；
When the push rod of cylinder 4 pulls 211 upward vertical movement of tool rest, the overall also upward vertical movement of scraper 21.
In addition, for ease of being rooted out to grinding plate edge mill skin, the present invention is also equipped with the bracket upright post 12
Horizontal scraper 23, the horizontal scraper 23 is parallel with crossbeam 11, and the horizontal scraper 23 can carry out flexible dynamic in the horizontal direction
Make, when need to such as be rooted out to grinding plate edge mill skin, horizontal scraper 23 is stretched out and is leant and right with grinding plate edge
Mill skin is rooted out, and mill skin is rooted out when finishing, and horizontal scraper 23 is retracted and is separated with grinding plate edge；The horizontal scraper 23
When expanding-contracting action is done, it drives power to use and is connected with the push rod of cylinder, also can be by the way of artificial force；To improve
Efficiency is rooted out, preferably, the horizontal scraper 23 is connected with the push rod of cylinder.
It is that the mill skin at each position of grinding panel surface is rooted out, scraper 21 can be in grinding panel surface radial direction position in the present invention
Put movement；Used as a kind of structure of the invention, the present invention is installed in the rack beam 11 and is provided with the position of the scraper 21
Slide rail（It is not shown）, the slide rail sets along the length direction of the rack beam 11, and the tool rest 211 of the scraper 21 is provided with
The chute matched with the slide rail, the scraper 21 is by the chute and the slide rail slidable connection of the crossbeam；Obviously
It is that scraper of the invention 21 can be carried out when being moved back and forth by the way of cylinder push-rod promotes scraper.
Furtherly, as the structure type of depression bar of the present invention 22, the cylinder 5 being connected with depression bar 22 is arranged on the support
Crossbeam 11 is installed at the position of depression bar 22, and one end of the depression bar 22 is connected with the push rod of the gas thick stick 5, depression bar 22 it is another
End is provided with roller 221；When being rooted out to mill skin, depression bar 22 is moved downward in the presence of the push rod of cylinder 5, roller
221 lean with the abrasive disk on rotating disk, and are engaged with the scraper 21 positioned at abrasive disk opposite side, are pointed to abrasive disk
The mill skin on surface is rooted out.
In order to when being rooted out to mill skin, it is ensured that grinding panel surface mill skin can be rooted out；It is horizontal that the present invention is located at the support
Support component 3 at the vertical lower of beam 11 includes pedestal 31 and rotating disk 32, wherein, the rotating disk 32 is located at the surface of pedestal 31 simultaneously
Can be rotated around pedestal 31；Because when mill skin is rooted out, the rotation of the rotating disk 32, the scraper 21 can root out grinding dish cart
The circumferential all mill skins in face.
For ensure rotating disk 32 root out mill Pi Shike rotated around pedestal 31, the present invention is additionally provided with power set, the power
Device is connected with the rotating disk 32, when rotating disk 32 rotates, power is provided to rotating disk 32；The power set are preferably motor
6, and in order to control the startup and closing of the motor 6, the motor 6 is preferably connected with controlling switch.
In addition, to prevent when mill skin is rooted out, abrasive disk produces play on the surface of rotating disk 32, and the present invention is also in rotating disk 32
Center protrusion is provided with raised 321, and the shapes and sizes of the projection 321 are adapted with the mounting hole size and shape of abrasive disk；
When being rooted out to mill skin, make the mounting hole of abrasive disk raised with disc surfaces 321 corresponding, and grind raised 321 insertion
In the mounting hole of mill, abrasive disk is fixed；Certainly, it is more firm for fix abrasive disk, can further turn
The surface of disk 32 sets locating piece 322, and the locating piece 322 is preferably several, its surface for being evenly distributed on rotating disk 32.
Referring to Fig. 2, when being rooted out to the mill skin for grinding panel surface using the present invention, first, abrasive disk 7 is fixed on
On the rotating disk 32 of support component 3, start motor 6, rotating disk 32 is rotated around pedestal 31, while driving abrasive disk 7 together around pedestal
31 rotations；Then, the push rod of startup cylinder 4 and cylinder 5, cylinder 4 and cylinder 5 is stretched out, and scraper 21 and depression bar 22 are transported vertically downward
Move and leant with the surface of abrasive disk 7；Because scraper 21 is provided with the blade being obliquely installed, when rotated, scraper 21 exists abrasive disk 7
The lower surface mill intracutaneous of incision abrasive disk 7 of pressure effect of cylinder 4, with the rotation of abrasive disk 7, the surface of abrasive disk 7 mill skin is being scraped
Knife 21 is constantly rooted out at position；After abrasive disk 7 rotates a circle, the surface of abrasive disk 7 mill skin is rooted out and scraper 21
Same widths；Now, transverse shifting scraper 21, proceeds to root out to the mill skin that the surface of abrasive disk 7 is not yet rooted out；Work as abrasive disk
The mill skin on surface is rooted out when finishing, and closes the pusher retracted of cylinder 4 and cylinder 5, cylinder 4 and cylinder 5, and scraper 21 and depression bar 22 hang down
Directly move upwards and be separated with the surface of abrasive disk 7；Entirely root out process, it is not necessary to any manpower, it is time saving and energy saving, shovel skin efficiency
Also it is higher.
In addition, as the margin residual of abrasive disk 7 have mill skin or other need to root out thing, make rotating disk 32 drive abrasive disk 7 rotate
While, start the horizontal scraper 23 on the column 12 of support 1, make the horizontal scraper 23 stretch out and with the edge of abrasive disk 7
Lean, horizontal scraper 23 cuts the mill intracutaneous at the edge of abrasive disk 7 under external force, with the rotation of abrasive disk 7, abrasive disk
7 edges mill skin is rooted out completely in the presence of horizontal scraper 23.
During being rooted out to mill skin, the scraper 21 and depression bar 22 being positioned on the crossbeam 11 of support 1 cooperate, to grinding
Mill 7 applies downward pressure, it is to avoid in rotation process, abrasive disk 7 produces play to abrasive disk 7 upwards；And the table of depression bar 22
Face sets roller 221, and in abrasive disk 7 in rotary course, roller 221 and the surface of abrasive disk 7 of the end of depression bar 22 lean, and grind
When mill 7 is rotated, roller 221 also produces rotation on the surface of abrasive disk 7, it is to avoid abrasive disk 7 is made because under the pressure of depression bar 22
Damage is produced into the surface of abrasive disk 7.Meanwhile, depression bar 22 is also protected, the service life of depression bar 22 is extended.
Claims (8)
1. a kind of grinding panel surface grinds skin shoveling device, it is characterised in that it includes support, and the support includes horizontally disposed
Crossbeam and vertically disposed column, doctor assemblies are provided with the rack beam；The doctor assemblies include pacifying respectively
The scraper and depression bar that can stretch on crossbeam and in vertical direction；Set at the vertical lower of the rack beam
Have to fix the support component of abrasive disk when mill skin is rooted out, the support component includes pedestal and is arranged on base-plates surface
And the rotating disk that can be rotated around pedestal, the scraper and depression bar corresponding rotating disk both sides and scalable in vertical direction of being crossed on respectively
Ground leans or separates with the surface of the rotating disk.
2. grinding panel surface mill skin shoveling device as claimed in claim 1, it is characterised in that the scraper include tool rest and
The blade being connected with the tool rest, the joint face of the tool rest and the blade is inclined plane, the blade removably with this
The inclined plane of tool rest is connected；It is connected with the push rod of a cylinder in the tool rest bottom.
3. grinding panel surface as claimed in claim 2 grinds skin shoveling device, it is characterised in that the rack beam is installed described
Slide rail is provided with doctor position, the slide rail is set along the length direction of the rack beam, and the tool rest of the scraper is provided with
The chute matched with the slide rail, the scraper is by the chute and the slide rail slidable connection of the crossbeam.
4. grinding panel surface as claimed in claim 3 grinds skin shoveling device, it is characterised in that is installed in the rack beam and pressed
Be provided with cylinder at the position of bar, one end of the depression bar is connected with the push rod of the gas thick stick, and the other end of depression bar be provided with can be with
The roller that the disc surfaces lean.
5. the grinding panel surface as described in any one of Claims 1-4 grinds skin shoveling device, it is characterised in that the support group
The center of turntable protrusion of part is provided with the projection being adapted with abrasive disk mounting hole size and shape.
6. grinding panel surface as claimed in claim 5 grinds skin shoveling device, it is characterised in that with horizontal stroke in the bracket upright post
Beam is provided with and is used to the grinding plate edge mill horizontal scraper rooted out of skin parallelly, the horizontal scraper telescopically with
The edge of the rotating disk leans or separates.
7. grinding panel surface as claimed in claim 1 grinds skin shoveling device, it is characterised in that the rotating disk is also associated with being used to
The power set of turntable rotation are driven, the power set are motor, and the motor is also associated with starting to controlled motor and closing
The controlling switch closed.
8. grinding panel surface as claimed in claim 1 grinds skin shoveling device, it is characterised in that the doctor assemblies are connected with use
With the controlling switch for controlling doctor assemblies to act.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710051353.8A CN106863137B (en) | 2017-01-23 | 2017-01-23 | Grinding disk surface buffing and shoveling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710051353.8A CN106863137B (en) | 2017-01-23 | 2017-01-23 | Grinding disk surface buffing and shoveling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106863137A true CN106863137A (en) | 2017-06-20 |
| CN106863137B CN106863137B (en) | 2020-07-28 |
Family
ID=59157841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710051353.8A Active CN106863137B (en) | 2017-01-23 | 2017-01-23 | Grinding disk surface buffing and shoveling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106863137B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193484A (en) * | 2019-06-18 | 2019-09-03 | 上海勘测设计研究院有限公司 | It is a kind of for the aquatile shoveling device of gate and its in the mounting structure of vertical-lift gate |
| CN112903501A (en) * | 2021-02-03 | 2021-06-04 | 河源市龙鑫光学科技有限公司 | Ultrathin wear-resistant touch screen glass processing technology |
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| CN201102093Y (en) * | 2007-10-22 | 2008-08-20 | 宁新华 | Three-axis numerical control panoramic table miller |
| CN101622095A (en) * | 2007-02-28 | 2010-01-06 | 三菱重工业株式会社 | Table device of machine tool |
| CN205702592U (en) * | 2016-06-08 | 2016-11-23 | 广州市昊志机电股份有限公司 | A kind of milling machine structure |
| CN205764082U (en) * | 2016-05-12 | 2016-12-07 | 深圳市万嘉科技有限公司 | Process equipment |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1506836A1 (en) * | 2003-08-12 | 2005-02-16 | Konica Minolta Opto, Inc. | Machining apparatus |
| CN101622095A (en) * | 2007-02-28 | 2010-01-06 | 三菱重工业株式会社 | Table device of machine tool |
| CN201102093Y (en) * | 2007-10-22 | 2008-08-20 | 宁新华 | Three-axis numerical control panoramic table miller |
| CN205764082U (en) * | 2016-05-12 | 2016-12-07 | 深圳市万嘉科技有限公司 | Process equipment |
| CN205702592U (en) * | 2016-06-08 | 2016-11-23 | 广州市昊志机电股份有限公司 | A kind of milling machine structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110193484A (en) * | 2019-06-18 | 2019-09-03 | 上海勘测设计研究院有限公司 | It is a kind of for the aquatile shoveling device of gate and its in the mounting structure of vertical-lift gate |
| CN110193484B (en) * | 2019-06-18 | 2024-02-02 | 上海勘测设计研究院有限公司 | Mounting structure of vertical lift gate |
| CN112903501A (en) * | 2021-02-03 | 2021-06-04 | 河源市龙鑫光学科技有限公司 | Ultrathin wear-resistant touch screen glass processing technology |
| CN112903501B (en) * | 2021-02-03 | 2021-10-15 | 河源市龙鑫光学科技有限公司 | Ultrathin wear-resistant touch screen glass processing technology |
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| Publication number | Publication date |
|---|---|
| CN106863137B (en) | 2020-07-28 |
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