CN105328546A - Light guide plate polishing device - Google Patents
Light guide plate polishing device Download PDFInfo
- Publication number
- CN105328546A CN105328546A CN201510778801.5A CN201510778801A CN105328546A CN 105328546 A CN105328546 A CN 105328546A CN 201510778801 A CN201510778801 A CN 201510778801A CN 105328546 A CN105328546 A CN 105328546A
- Authority
- CN
- China
- Prior art keywords
- polishing
- unit
- light guide
- guide plate
- polishing portion
- 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.)
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Classifications
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- 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
- B24B27/00—Other grinding machines or devices
- B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
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- 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
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
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- 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
-
- 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
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
Abstract
The invention discloses a light guide plate polishing device which comprises a machine table, a transmission unit, a first polishing unit, a second polishing unit, a dust absorption unit and a control unit. According to the light guide plate polishing device, the first polishing unit, the second polishing unit and a rotatable adsorption plate are arranged, so that raw edge processing and polishing can be simultaneously carried out on two side surfaces of the light guide plate, and the light guide plate is rotated by 90 degrees by utilizing the adsorption plate; raw edge processing and polishing are continuously carried out on another two side surfaces of the light guide plate, so that the processing efficiency is high and the processing effect is good; a positioning sensor is arranged on a mobile station for replacing manual visual-inspection positioning, so that accuracy and consistency during positioning of the light guide plate are improved; a dust absorption unit is arranged below the first polishing unit and the second polishing unit, so that dust and smoke generated in a processing process can be effectively absorbed, and therefore, the light guide plate is prevented from being polluted by dust, and processing quality of the light guide plate is improved. The light guide plate polishing device is simple in structure, convenient in operation, and suitable for large-scale production.
Description
Technical field:
The invention belongs to light guide plate technical field of processing equipment, specifically relate to a kind of light guide plate burnishing device.
Background technology:
Along with the development of liquid crystal industry, light guide plate is widely used, has become indispensable part in liquid crystal module at present.The Main Function of light guide plate is: after being imported from side by LED light source, the printing net-point through the later stage reflects, and makes light source homogenising.In the process of light guide plate, light guide plate needs cut, and the edge surface of the light guide plate after cutting is all hair side, needs polishing, to reach surperficial best bright finish, reduces the loss of printing opacity.So in process, the side polishing of light guide plate is extremely important, affects the quality of light guide plate, affects the quality of whole liquid crystal module.
In prior art, usual employing light guide plate polishing machine carries out polishing to the side of light guide plate, light guide plate polishing machine is precise finiss polissoir, workpiece to be machined is put on abrasive disk, abrasive disk inverse clock rotates, and revises wheel belt and to start building part rotation, and the mode of gravity pressurization is exerted pressure to workpiece, workpiece and abrasive disk are done relative running and are rubbed, and reach grinding and polishing object.Abrasive disk finisher structure adopts oil pressure suspension guide front-rear reciprocation movement, and diamond cutter of having a shave carries out precise dressing to the abradant surface of abrasive disk, obtains desirable plane effect.But existing light guide plate polishing machine once can only be processed of a light guide plate side, therefore, each light guide plate at least needs the processing stroke of four times just can complete the trimming of overall burr, working (machining) efficiency is low, and existing polishing machine needs operating personnel to carry out range estimation location, accuracy and uniformity are all poor, affect the crudy of light guide plate; Can dust be produced in the process of light guide plate, make the light guide plate in processing easily be subject to the pollution of dust, affect the crudy of light guide plate.
Summary of the invention:
For this reason, technical problem to be solved by this invention is that the light guide plate polishing machine working (machining) efficiency for the polishing of light guide plate side in prior art is low, artificial visually examine location cause accuracy and uniformity poor, light guide plate in processing is easily subject to the pollution of dust, affect the crudy of light guide plate, thus propose a kind of light guide plate burnishing device.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of light guide plate burnishing device, comprising:
Board.
Transmission unit, described transmission unit is arranged along the longitudinal direction of described board, described transmission unit comprises and is fixedly installed on the guide rail on described board and the travelling carriage at described slide on rails, described travelling carriage is provided with position sensor, rotatable adsorption plate and light guide plate.
First polishing unit, described first polishing unit is used for carrying out rough polishing to light guide plate, and described first polishing unit comprises the first polishing portion and the second polishing portion, and described first polishing portion and described second polishing portion are separately positioned on the both sides of described transmission unit.
Second polishing unit, described second polishing unit is used for carrying out fine polishing to light guide plate, described second polishing unit and described first polishing unit interval are arranged, described second polishing unit comprises the 3rd polishing portion and the 4th polishing portion, and described 3rd polishing portion and described 4th polishing portion are separately positioned on the both sides of described transmission unit.
Cleaner unit, described cleaner unit comprises the below that the first cleaner unit described in the first cleaner unit and the second cleaner unit is arranged on described first polishing unit, and described second cleaner unit is arranged on the below of described second polishing unit.
Control unit, described control unit is connected with described transmission unit, described first polishing unit, described second polishing unit, described cleaner unit respectively.
Preferred as technique scheme, described adsorption plate is provided with vacuum absorption holes, and described adsorption plate adsorbs described light guide plate by described vacuum absorption holes.
Preferred as technique scheme, whether described position sensor is fixedly installed on the side of described travelling carriage, vertical with described guide rail for the side of locating described light guide plate.
Preferred as technique scheme, described first polishing portion is identical with described second polishing portion structure, the rough polishing cutter that described first polishing portion comprises the first motor and is connected with the power transmission shaft of described first motor.
Preferred as technique scheme, described 3rd polishing portion is identical with described 4th polishing portion structure, the fine polishing cutter that described 3rd polishing portion comprises the second motor and is connected with the power transmission shaft of described second motor.
Preferred as technique scheme, described first cleaner unit is identical with described second cleaner unit structure, and described first cleaner unit comprises dust shield, blower fan, sweep-up pipe and dust arrester.Described dust shield connects described blower fan, described sweep-up pipe, described dust arrester successively, and described dust shield is arranged on the below of described first polishing portion and described second polishing portion.
Preferred as technique scheme, also comprise: transfer unit, described transplanting unit is arranged on the end of described guide rail, and for described light guide plate is shifted out described board, described transplanting unit is connected with described control unit.
Beneficial effect of the present invention is: it is by arranging the first polishing unit and the second polishing unit and rotatable adsorption plate, burr processing and polishing can be carried out to two sides of light guide plate simultaneously, adsorption plate 90-degree rotation is utilized after machining, continue to carry out burr processing and polishing to two other side of light guide plate, working (machining) efficiency is high, and processing effect is good; It comes alternative artificial visually examine location by arranging position sensor on a mobile station, improves accuracy when light guide plate is located and uniformity; It, by arranging cleaner unit in the below of the first polishing unit and the second polishing unit, effectively can absorb the dust and smog that produce in process, avoids light guide plate to be subject to the pollution of dust, improves the crudy of light guide plate.This apparatus structure is simple, easy to operate, is applicable to industrial mass production.
Accompanying drawing illustrates:
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein:
Fig. 1 is the light guide plate burnishing device structural representation of one embodiment of the invention;
Fig. 2 is the travelling carriage structural representation of one embodiment of the invention;
Fig. 3 is the first polishing cellular construction schematic diagram of one embodiment of the invention;
Fig. 4 is the second polishing cellular construction schematic diagram of one embodiment of the invention;
Fig. 5 is the first cleaner unit structural representation of one embodiment of the invention.
Symbol description in figure:
1-board, 2-transmission unit, 3-light guide plate, 4-first polishing unit, 5-second polishing unit, 6-cleaner unit, 7-control unit, 8-transfer unit, 201-guide rail, 202-travelling carriage, 401-first polishing portion, 402-second polishing portion, 501-the 3rd polishing portion, 502-the 4th polishing portion, 601-first cleaner unit, 602-second cleaner unit, 2021-position sensor, 2022-adsorption plate, 4011-first motor, 4012-rough polishing cutter, 4013-first base, 5011-second motor, 5012-fine polishing cutter, 5013-second base, 6011-dust shield, 6012-blower fan, 6013-sweep-up pipe, 6014-dust arrester.
Detailed description of the invention:
As shown in Figure 1, light guide plate burnishing device of the present invention, comprising: board 1, transmission unit 2, the first polishing unit 4, second polishing unit 5, cleaner unit 6, control unit 7.
Described board 1 is strip board, in the present embodiment, chooses described board 1 length bearing of trend for longitudinal.
Described transmission unit 2 is arranged along the longitudinal direction of described board 1, and described transmission unit 2 comprises the guide rail 201 be fixedly installed on described board 1 and the travelling carriage 202 slided on described guide rail 201.Described guide rail 201 is arranged on the centre of described board 1, and described guide rail 201 is arrange along the longitudinal direction of described board 1.As shown in Figure 2, described travelling carriage 202 is provided with position sensor 2021, rotatable adsorption plate 2022 and light guide plate 3.In the present embodiment, choose described travelling carriage 202, described adsorption plate 2022 and described light guide plate 3 and be rectangular slab, four limits of described adsorption plate 2022 are all longer than on four limits of described travelling carriage 202, four limits of described adsorption plate 2022 and described travelling carriage 202 are all longer than on four limits of described light guide plate 3, make to add man-hour, polishing tool can not touch described travelling carriage 202 and described adsorption plate 2022.Described adsorption plate 2022 is provided with vacuum absorption holes, and described adsorption plate 2022 adsorbs described light guide plate 3 by described vacuum absorption holes.Described position sensor 2021 is fixedly installed on the side of described travelling carriage 202, described position sensor 2021 is just to a side of described light guide plate 3, and described position sensor 2021 is for locating the just whether vertical with described guide rail 201 to that side of position sensor 2021 of described light guide plate 3.
Described first polishing unit 4 is for carrying out rough polishing to light guide plate 3, and described first polishing unit 4 comprises the first polishing portion 401 and the second polishing portion 402, and described first polishing portion 401 and described second polishing portion 402 are separately positioned on the both sides of described transmission unit 2.Described first polishing portion 401 is identical with described second polishing portion 402 structure, in the present embodiment, provide the structure of described first polishing portion 401 as shown in Figure 3, the rough polishing cutter 4012 that described first polishing portion 401 comprises the first motor 4011 and is connected with the power transmission shaft of described first motor 4011, described first motor 4011 and described rough polishing cutter 4012 are all arranged on the first base 4013, described first base 4013 is fixed on described board 1, is namely fixed on described guide rail 201 side.
Described second polishing unit 5 is for carrying out fine polishing to light guide plate 3, described second polishing unit 5 and described first polishing unit 4 interval are arranged, described second polishing unit 5 comprises the 3rd polishing portion 501 and the 4th polishing portion 502, and described 3rd polishing portion 501 and described 4th polishing portion 502 are separately positioned on the both sides of described transmission unit 2.Described 3rd polishing portion 501 is identical with described 4th polishing portion 502 structure, in the present embodiment, provide the structure of described 3rd polishing portion 501 as shown in Figure 4, the fine polishing cutter 5012 that described 3rd polishing portion 501 comprises the second motor 5011 and is connected with the power transmission shaft of described second motor 5011.Described second motor 5011 and described fine polishing cutter 5012 are all arranged on the second base 5013, and described second base 5013 is fixed on described board 1, are namely fixed on described guide rail 201 side.
Described cleaner unit 6 comprises the first cleaner unit 601 and the second cleaner unit 602, and described first cleaner unit 601 is arranged on the below of described first polishing unit 4, and described second cleaner unit 602 is arranged on the below of described second polishing unit 5.Described first cleaner unit 601 is identical with described second cleaner unit 602 structure, and as shown in Figure 5, described first cleaner unit 601 comprises dust shield 6011, blower fan 6012, sweep-up pipe 6013 and dust arrester 6014.Described dust shield 6011 connects described blower fan 6012, described sweep-up pipe 6013, described dust arrester 6014 successively, and described dust shield 6011 is arranged on the below of described first polishing portion 401 and described second polishing portion 402.
Described control unit 7 is connected with described transmission unit 2, described first polishing unit 4, described second polishing unit 5, described cleaner unit 6 respectively.
Light guide plate burnishing device in the present embodiment also comprises transfer unit 8, and described transfer unit 8 is arranged on the end of described guide rail 201, and for described light guide plate 3 is shifted out described board 1, described transfer unit 8 is connected with described control unit 7.In the present embodiment, choosing described transfer unit 8 is manipulator.Described light guide plate is shifted out the processing action that described board 1 goes to carry out next stage by described manipulator.
Operation principle:
Light guide plate 3 is put on described travelling carriage 202, described control unit 7 controls described adsorption plate 2022 and works and held by described light guide plate 3 firmly, control unit 7 controls described position sensor 2021 and works, judge whether a side of the light guide plate 3 just right with described position sensor 2021 is vertical with the direction of described guide rail 201 and result turned back in control unit 7, if out of plumb, then the position of described light guide plate 3 is adjusted, until described light guide plate 3 side is vertical with the direction of described guide rail 201.Then, control unit 7 controls described travelling carriage 202 and moves until move to described first polishing unit 4 place to stop movement on described guide rail 201, control unit 7 controls the first motor 4011 work in the first polishing portion 401 and described second polishing portion 402 and drives described rough polishing cutter 4012 to work, two sides of described rough polishing cutter 4012 to described light guide plate 3 of guide rail 201 both sides carry out rough polishing, while described rough polishing cutter 4012 works, open described cleaner unit 6 and carry out dust suction process below described rough polishing cutter 4012, after the rough polishing of these two sides completes, control unit 7 controls described adsorption plate 2022 and carries out 90-degree rotation, and positioned by position sensor 2021, make two other side of described light guide plate 3 respectively just to the rough polishing cutter 4012 of guide rail 201 both sides, control unit 7 controls the first motor 4011 work and drives described rough polishing cutter 4012 to work, described rough polishing cutter 4012 two other side to described light guide plate 3 of guide rail 201 both sides carries out rough polishing, while described rough polishing cutter 4012 works, open described cleaner unit 6 and carry out dust suction process below described rough polishing cutter 4012, until complete the rough polishing process of 4 sides of light guide plate 3.Control unit 7 controls described travelling carriage 202 and drives described light guide plate 3 to move to the second polishing unit 5 place and stop mobile, control unit 7 the second motor 5011 controlled in described 3rd polishing portion 501 and described 4th polishing portion 501 works and drives described fine polishing cutter 5012 to work, two sides of described fine polishing cutter 5012 to described light guide plate 3 of guide rail 201 both sides carry out fine polishing, while described fine polishing cutter 5012 works, open described cleaner unit 6 and carry out dust suction process below described fine polishing cutter 5012, after the fine polishing of these two sides completes, control unit 7 controls described adsorption plate 2022 and carries out 90-degree rotation, and positioned by position sensor 2021, make two other side of described light guide plate 3 respectively just to the fine polishing cutter 5012 of guide rail 201 both sides, control unit 7 controls the second motor 5011 work and drives described fine polishing cutter 5012 to work, described fine polishing cutter 5012 two other side to described light guide plate 3 of guide rail 201 both sides carries out fine polishing, while described fine polishing cutter 5012 works, open described cleaner unit 6 and carry out dust suction process below described fine polishing cutter 5012, until complete the fine polishing process of 4 sides of light guide plate 3.Control unit 7 controls described travelling carriage 202 and drives described light guide plate 3 to move to the end of described guide rail 201, and control unit 7 controls described transfer unit 8 and described light guide plate shifted out the processing action that described board 1 goes to carry out next stage.Control unit 7 controls the top that described travelling carriage 202 turns back to described guide rail 201, continues to carry out processing process to next block light guide plate.
A kind of light guide plate burnishing device described in the present embodiment, comprising: board, transmission unit, the first polishing unit, the second polishing unit, cleaner unit and control unit.It is by arranging the first polishing unit and the second polishing unit and rotatable adsorption plate, burr processing and polishing can be carried out to two sides of light guide plate simultaneously, adsorption plate 90-degree rotation is utilized after machining, continue to carry out burr processing and polishing to two other side of light guide plate, working (machining) efficiency is high, and processing effect is good; It comes alternative artificial visually examine location by arranging position sensor on a mobile station, improves accuracy when light guide plate is located and uniformity; It, by arranging cleaner unit in the below of the first polishing unit and the second polishing unit, effectively can absorb the dust and smog that produce in process, avoids light guide plate to be subject to the pollution of dust, improves the crudy of light guide plate.This apparatus structure is simple, easy to operate, is applicable to industrial mass production.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (7)
1. a light guide plate burnishing device, is characterized in that, comprising:
Board (1);
Transmission unit (2), described transmission unit (2) is arranged along the longitudinal direction of described board (1), described transmission unit (2) comprises the guide rail (201) be fixedly installed on described board (1) and the travelling carriage (202) above slided at described guide rail (201), described travelling carriage (202) is provided with position sensor (2021), rotatable adsorption plate (2022) and light guide plate (3);
First polishing unit (4), described first polishing unit (4) is for carrying out rough polishing to light guide plate (3), described first polishing unit (4) comprises the first polishing portion (401) and the second polishing portion (402), and described first polishing portion (401) and described second polishing portion (402) are separately positioned on the both sides of described transmission unit (2);
Second polishing unit (5), described second polishing unit (5) is for carrying out fine polishing to light guide plate (3), described second polishing unit (5) and described first polishing unit (4) interval are arranged, described second polishing unit (5) comprises the 3rd polishing portion (501) and the 4th polishing portion (502), and described 3rd polishing portion (501) and described 4th polishing portion (502) are separately positioned on the both sides of described transmission unit (2);
Cleaner unit (6), described cleaner unit (6) comprises the first cleaner unit (601) and the second cleaner unit (602), described first cleaner unit (601) is arranged on the below of described first polishing unit (4), and described second cleaner unit (602) is arranged on the below of described second polishing unit (5);
Control unit (7), described control unit (7) is connected with described transmission unit (2), described first polishing unit (4), described second polishing unit (5), described cleaner unit (6) respectively.
2. light guide plate burnishing device according to claim 1, it is characterized in that: (2022) are provided with vacuum absorption holes to described adsorption plate, described adsorption plate (2022) adsorbs described light guide plate (3) by described vacuum absorption holes.
3. light guide plate burnishing device according to claim 1, it is characterized in that: described position sensor (2021) is fixedly installed on the side of described travelling carriage (202), whether vertical with described guide rail (201) for the side of locating described light guide plate (3).
4. light guide plate burnishing device according to claim 1, it is characterized in that: described first polishing portion (401) is identical with described second polishing portion (402) structure, the rough polishing cutter (4012) that described first polishing portion (401) comprises the first motor (4011) and is connected with the power transmission shaft of described first motor (4011).
5. light guide plate burnishing device according to claim 1, it is characterized in that: described 3rd polishing portion (501) is identical with described 4th polishing portion (502) structure, the fine polishing cutter (5012) that described 3rd polishing portion (501) comprises the second motor (5011) and is connected with the power transmission shaft of described second motor (5011).
6. light guide plate burnishing device according to claim 1, it is characterized in that: described first cleaner unit (601) is identical with described second cleaner unit (602) structure, and described first cleaner unit (601) comprises dust shield (6011), blower fan (6012), sweep-up pipe (6013) and dust arrester (6014).Described dust shield (6011) connects described blower fan (6012), described sweep-up pipe (6013), described dust arrester (6014) successively, and described dust shield (6011) is arranged on the below of described first polishing portion (401) and described second polishing portion (402).
7. light guide plate burnishing device according to claim 1, it is characterized in that, also comprise: transfer unit (8), described transplanting unit (8) is arranged on the end of described guide rail (201), for described light guide plate (3) is shifted out described board (1), described transplanting unit (8) is connected with described control unit (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510778801.5A CN105328546A (en) | 2015-11-15 | 2015-11-15 | Light guide plate polishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510778801.5A CN105328546A (en) | 2015-11-15 | 2015-11-15 | Light guide plate polishing device |
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| Publication Number | Publication Date |
|---|---|
| CN105328546A true CN105328546A (en) | 2016-02-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510778801.5A Pending CN105328546A (en) | 2015-11-15 | 2015-11-15 | Light guide plate polishing device |
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| CN (1) | CN105328546A (en) |
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| CN106625227A (en) * | 2016-09-28 | 2017-05-10 | 东莞市联洲知识产权运营管理有限公司 | Positioning and protecting device for polishing of light guide plate |
| CN108838861A (en) * | 2018-09-06 | 2018-11-20 | 浙江欧易新能源有限公司 | A kind of light guide plate burnishing device |
| CN109397098A (en) * | 2018-10-29 | 2019-03-01 | 广东居峰环保科技有限公司 | A kind of dust exhaust apparatus of string polishing |
| CN111015383A (en) * | 2019-12-30 | 2020-04-17 | 淄博松阳锆业科技有限公司 | Grinding device is used in production of pottery sword |
| CN111300253A (en) * | 2020-04-11 | 2020-06-19 | 成都四吉达新材料科技有限公司 | Surface processing device and method for aluminum veneer |
| CN111673605A (en) * | 2020-06-15 | 2020-09-18 | 浙江水墨江南新材料科技有限公司 | Intelligent wood floor production device |
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| CN109397098A (en) * | 2018-10-29 | 2019-03-01 | 广东居峰环保科技有限公司 | A kind of dust exhaust apparatus of string polishing |
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| CN111673605A (en) * | 2020-06-15 | 2020-09-18 | 浙江水墨江南新材料科技有限公司 | Intelligent wood floor production device |
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Application publication date: 20160217 |