CN112743404B - Online dry-wet polishing and grinding device for electrolytic copper foil cathode roller - Google Patents
Online dry-wet polishing and grinding device for electrolytic copper foil cathode roller Download PDFInfo
- Publication number
- CN112743404B CN112743404B CN202011499565.0A CN202011499565A CN112743404B CN 112743404 B CN112743404 B CN 112743404B CN 202011499565 A CN202011499565 A CN 202011499565A CN 112743404 B CN112743404 B CN 112743404B
- Authority
- CN
- China
- Prior art keywords
- polishing
- brush roll
- water
- copper foil
- electrolytic copper
- 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.)
- Active
Links
Images
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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/37—Single-purpose machines or devices for grinding rolls, e.g. barrel-shaped rolls
-
- 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
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/35—Accessories
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses an electrolytic copper foil cathode roller online dry-wet polishing device which is characterized by comprising a rack, wherein sliding guide rails are embedded in the upper surfaces of two ends of the rack, a sliding support is slidably connected between the two sliding guide rails which are arranged in parallel, a transverse transmission lead screw is arranged in the middle of the sliding support, two air cylinders are arranged at the rear end of the sliding support, the bottom end of each air cylinder is fixedly arranged on the rack, the transverse transmission lead screw is connected with a water dispelling knife rest in a transmission manner, a water dispelling transmission mechanism is arranged at one end of the transverse transmission lead screw close to the inner side of the rack, a brush roll swinging mechanism, a polishing brush roll and a polishing brush roll rotating driving mechanism are sequentially arranged at the front end of the sliding support, the polishing brush roll, the brush roll swinging mechanism and the polishing brush roll rotating driving mechanism are coaxially arranged, a spraying mechanism is arranged on the rack on one side of the polishing brush roll, and a feeding transmission mechanism is fixedly arranged on the outer side of one end of the rack. The invention has the beneficial effects that: the polishing and grinding quality and the production efficiency of the cathode roller of the component in the electrolytic copper foil production process can be improved.
Description
Technical Field
The invention relates to the technical field of electrolytic copper foil production equipment, in particular to an online dry-wet polishing and grinding device for a cathode roller of an electrolytic copper foil.
Background
The electrolytic copper foil is used as a carrier of a negative active substance and a collector and transmitter of negative electron current in the lithium battery, so that the electrolytic copper foil has great influence on the electrochemical performance of the lithium battery, and the requirements on the electrolytic copper foil of a current collector material of the lithium battery are higher and higher along with the development of the lithium battery towards the direction of thinness and large capacity.
In the electrolytic copper foil production process, in order to control the roughness of the surface of the copper foil, the surface of a cathode roller which is a key part of the electrolytic copper foil is polished, most enterprises adopt a wet grinding process of spraying cooling water, and some enterprises also adopt a dry grinding process without water, but when the electrolytic copper foil with the diameter of 4.5 microns or less is produced, the surface of the cathode roller must be wet ground with water firstly, and then the polishing process of anhydrous dry grinding is carried out.
Disclosure of Invention
Aiming at the technical problems in the related art, the invention provides an electrolytic copper foil cathode roller online dry-wet polishing and grinding device which can improve the polishing and grinding quality of a part cathode roller in the electrolytic copper foil production process and improve the production efficiency.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows: the utility model provides an online wet throwing of electrolytic copper foil cathode roller grinds device futilely, includes the frame, the upper surface at frame both ends inlays and is equipped with sliding guide, two parallel arrangement sliding connection sliding support between the sliding guide, the sliding support middle part is equipped with the transverse transmission lead screw, the sliding support rear end is equipped with two cylinders, the bottom of cylinder sets firmly the frame, the transmission of transverse transmission lead screw is connected and is hurried up water knife rest, the one end of transverse transmission lead screw is close to the inboard of frame is equipped with hurried up water drive mechanism, the front end of sliding support is equipped with brush roll swing mechanism, throws the mill brush roll, throws mill brush roll rotation drive mechanism in proper order, just throw the mill brush roll with brush roll swing mechanism reaches throw the coaxial setting of mill brush roll rotation drive mechanism, throw mill brush roll one side be equipped with spray mechanism in the frame, the one end outside of frame has set firmly and has fed drive mechanism.
Further, the length of the embedded sliding guide rail is three quarters of the length of the rack.
Furthermore, a water expelling knife is arranged on the water expelling knife rest, the water expelling knife is made of steel or plastic, and the angle range of the water expelling knife is 0-180 degrees.
Further, the cylinder is connected with the sliding guide rail in a sliding mode through the sliding support.
Furthermore, the water-driving transmission mechanism is in transmission connection with the water-driving tool rest through the transverse transmission screw rod.
Furthermore, a plurality of spray heads are uniformly distributed on the spraying mechanism at equal intervals.
Furthermore, the feeding transmission mechanism is in transmission connection with the sliding support and is used for enabling the brush roll swinging mechanism, the polishing brush roll and the polishing brush roll rotating driving mechanism arranged at the front end of the sliding support to move in the radial direction.
The invention has the beneficial effects that: in view of the not enough of prior art existence, this application directly carries out anhydrous dry grinding operation after the wet grinding of part cathode roll area water, presses the knife rest that catches up with water on the burnishing and grinding brush roller through the cylinder, utilizes the pressure of the knife that catches up with water and the centrifugal force of the high-speed rotatory production of burnishing and grinding brush roller, can extrude, spin-dry the water in the burnishing and grinding brush roller fast, realizes taking the quick conversion of water wet grinding combination anhydrous dry grinding.
Under the centrifugal force of the high-speed rotation of the polishing and grinding brush roll and the extrusion of the water-expelling knife, the water in the polishing and grinding brush roll 9 is quickly drained, the water-expelling unit is integrally retreated, and the waterless dry grinding operation can be continuously carried out according to the embodiment 2
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of an electrolytic copper foil cathode roller on-line dry-wet polishing device according to an embodiment of the invention;
in the figure: 1. a frame; 2. a sliding guide rail; 3. a sliding support; 4. a transverse transmission screw rod; 5. a cylinder; 6. A water expelling tool rest; 7. a driving mechanism for driving water; 8. a brush roll oscillating mechanism; 9. A polishing and grinding brush roll; 10. A rotational drive mechanism for the polishing brush roll; 11. a spraying mechanism; 12. a feed transmission mechanism.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
As shown in fig. 1, the online dry-wet polishing device for the electrolytic copper foil cathode roller according to the embodiment of the invention comprises a frame 1, sliding guide rails 2 are embedded in the upper surfaces of two ends of the frame 1, the embedded length of the sliding guide rails 2 is three-fourths of the length of the frame 1, a sliding support 3 is slidably connected between the two sliding guide rails 2 arranged in parallel, a transverse transmission screw rod 4 is arranged in the middle of the sliding support 3, two air cylinders 5 are arranged at the rear end of the sliding support 3, the bottom end of each air cylinder 5 is fixedly arranged on the frame 1, the transverse transmission screw rod 4 is in transmission connection with a water dispelling knife rest 6, a water dispelling transmission mechanism 7 is arranged at one end of the transverse transmission screw rod 4 close to the inner side of the frame 1, a brush roll swinging mechanism 8, a polishing brush roll 9 and a polishing brush roll rotation driving mechanism 10 are sequentially arranged at the front end of the sliding support 3, the polishing brush roll 9, the brush roll swinging mechanism 8 and the polishing brush roll rotation driving mechanism 10 are coaxially arranged on the frame 1, a spraying mechanism 11 is arranged on one side of the polishing brush roll 9, and a feeding transmission mechanism 12 is fixedly arranged outside one end of the frame 1.
In an embodiment of the invention, the sliding guide rail 2, the sliding support 3, the transverse transmission screw rod 4, the air cylinder 5 and the water expelling blade holder 6 are combined to form a movable water expelling unit, the water expelling unit can move integrally, the water expelling unit is arranged on the frame 1, the spraying mechanism 11 is started, the air cylinder 5 is started, the water expelling blade arranged on the water expelling blade holder 6 is pushed to the polishing and grinding brush roller 9 rotating at a high speed along the sliding guide rail 2, and the water expelling blade holder 6 extrudes the polishing and grinding brush roller 9 from left to right under the action of the water expelling transmission mechanism 7 and the transverse transmission screw rod 4, so as to control the surface roughness of the polishing and grinding cathode roller.
In an embodiment of the invention, the water expelling knife rest 6 is provided with a water expelling knife, the angle of the water expelling knife ranges from 0 to 180 degrees, the water expelling knife rest 6 is contacted and generates certain pressure under the action of the water expelling transmission mechanism 7 and the transverse transmission screw rod 4, and the polishing brush roller 9 is repeatedly extruded from left to right to control the surface roughness of the polishing cathode roller.
In an embodiment of the invention, the feeding transmission mechanism 12 is in transmission connection with the sliding support 3 and is used for radially moving the brush roll swinging mechanism 8, the polishing brush roll 9 and the polishing brush roll rotation driving mechanism 10 which are arranged at the front end of the sliding support 3, the roller rotation driving mechanism 10 is used for adjusting the rotating speed of the polishing brush roll 9, the brush roll swinging mechanism 8 is used for adjusting the swinging amplitude of the polishing brush roll 9, the feeding transmission mechanism 12 is used for adjusting the pressure on the surface of a component cathode roll, the surface roughness of the polishing cathode roll is controlled, and the production efficiency is improved.
In order to facilitate understanding of the above-described technical aspects of the present invention, the above-described technical aspects of the present invention will be described in detail below in terms of specific usage.
In specific use, the electrolytic copper foil cathode roller online dry-wet polishing and grinding device provided by the invention has the following specific application examples:
example 1
In the electrolytic copper foil production process, when wet grinding is carried out on the component cathode roller, the roller swinging mechanism 8, the polishing and grinding brush roller 9 and the polishing and grinding brush roller rotating driving mechanism 10 move forwards through the feeding transmission mechanism 12, so that the polishing and grinding brush roller 9 is pressed against the component cathode roller, the spraying mechanism 11 is started, the rotating speed of the polishing and grinding brush roller 9 is adjusted through the polishing and grinding brush roller rotating driving mechanism 10, the swinging amplitude of the polishing and grinding brush roller 9 is adjusted through the brush roller swinging mechanism 8, the pressure on the surface of the component cathode roller is adjusted through the feeding transmission mechanism 12, and the surface roughness of the polishing and grinding cathode roller is controlled.
Example 2
When the part cathode roller is subjected to anhydrous dry grinding, the operation principle is the same as the above, and the difference is that the spraying mechanism 11 is not required to be opened, the brush roller swinging mechanism 8, the polishing and grinding brush roller 9 and the polishing and grinding brush roller rotating driving mechanism 10 are moved forwards by utilizing the feeding transmission mechanism 12, so that the polishing and grinding brush roller 9 is pressed against the part cathode roller, the rotating speed of the polishing and grinding brush roller 9 is adjusted by the polishing and grinding brush roller rotating driving mechanism 10, the swinging amplitude of the polishing and grinding brush roller 9 is adjusted by the brush roller swinging mechanism 8, and the surface roughness of the polishing and grinding cathode roller is controlled by adjusting the pressure on the surface of the part cathode roller by the feeding transmission mechanism 12.
Example 3
When the part cathode roller is subjected to mixed polishing of anhydrous dry grinding after wet grinding, wet grinding with water is firstly carried out according to embodiment 1, after the wet grinding is finished, the spraying mechanism 11 is closed, the compressed air cylinder 5 is started, the water expelling knife arranged on the water expelling knife rest 6 is pushed to the polishing and grinding brush roller 9 rotating at high speed along the sliding guide rail 2 to contact and generate certain pressure, the water expelling knife rest 6 repeatedly extrudes the polishing and grinding brush roller 9 from left to right under the action of the water expelling transmission mechanism 7 and the transverse transmission screw rod 4, water in the polishing and grinding brush roller 9 is quickly dewatered under the action of centrifugal force of high-speed rotation of the polishing and grinding brush roller and the extrusion of the water expelling knife, and after the water expelling unit is integrally retreated, the anhydrous dry grinding operation can be continuously carried out according to embodiment 2.
In conclusion, by means of the technical scheme, the anhydrous dry grinding operation can be directly carried out after the cathode roller of the component is wet-ground with water, the water expelling knife rest is pressed against the polishing and grinding brush roller through the air cylinder, water in the polishing and grinding brush roller can be quickly extruded and dried by utilizing the pressure of the water expelling knife and the centrifugal force generated by the high-speed rotation of the polishing and grinding brush roller, and the quick conversion of the combination of the wet grinding with water and the anhydrous dry grinding is realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The online dry-wet polishing device for the electrolytic copper foil cathode roller is characterized by comprising a frame (1), sliding guide rails (2) are embedded in the upper surfaces of two ends of the frame (1), a sliding support (3) is connected between the two sliding guide rails (2) in a sliding mode and arranged in parallel, a transverse transmission screw rod (4) is arranged in the middle of the sliding support (3), two cylinders (5) are arranged at the rear end of the sliding support (3), the bottom end of each cylinder (5) is fixedly arranged on the frame (1), a water-driving knife rest (6) is connected with the transverse transmission screw rod (4) in a transmission mode, a water-driving transmission mechanism (7) is arranged on the inner side, close to the frame (1), of one end of the transverse transmission screw rod (4), a brush roll swinging mechanism (8), a polishing brush roll (9) and a polishing roll rotation driving mechanism (10) are sequentially arranged at the front end of the sliding support (3), the polishing roll swinging mechanism (8) and the polishing roll rotation driving mechanism (10) are arranged on one side of the polishing roll (9), the frame (11) is coaxially arranged with the brush roll swinging mechanism (8), a plastic knife-driving knife rest (6) is arranged on the outer side of the frame, and the polishing roll (12) is arranged coaxially with the spraying mechanism (0-180-degree of the plastic knife rest, drive water drive mechanism (7) through transverse transmission lead screw (4) transmission connection drive water knife rest (6), carry out the wet-milling of taking water through opening spray mechanism (11), wet-milling is accomplished the back, through closing spray mechanism (11) and open cylinder (5), drive water knife rest (6) are through driving water drive mechanism (7) and transverse transmission lead screw (4) to throwing mill brush roll (9) extrude, throwing mill brush roll (9) can be taken off futilely fast through the centrifugal force of high-speed rotation and the extrusion of the sword of driving water knife rest (6), and anhydrous dry grinding process is carried out to throwing mill brush roll (9).
2. The electrolytic copper foil cathode roller on-line dry-wet polishing device as claimed in claim 1, wherein the length of the slide rail (2) is three quarters of the length of the frame (1).
3. The electrolytic copper foil cathode roller online dry-wet polishing device as claimed in claim 1, wherein the cylinder (5) is slidably connected with the sliding guide rail (2) through the sliding bracket (3).
4. The electrolytic copper foil cathode roller online dry-wet polishing device as claimed in claim 1, wherein a plurality of nozzles are uniformly distributed on the spraying mechanism (11) at equal intervals.
5. The electrolytic copper foil cathode roller on-line dry-wet polishing device according to claim 1, wherein the feeding transmission mechanism (12) is in transmission connection with the sliding bracket (3) for radially moving the brush roll swinging mechanism (8), the polishing brush roll (9) and the polishing brush roll rotation driving mechanism (10) arranged at the front end of the sliding bracket (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011499565.0A CN112743404B (en) | 2020-12-18 | 2020-12-18 | Online dry-wet polishing and grinding device for electrolytic copper foil cathode roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011499565.0A CN112743404B (en) | 2020-12-18 | 2020-12-18 | Online dry-wet polishing and grinding device for electrolytic copper foil cathode roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112743404A CN112743404A (en) | 2021-05-04 |
| CN112743404B true CN112743404B (en) | 2022-11-15 |
Family
ID=75648035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011499565.0A Active CN112743404B (en) | 2020-12-18 | 2020-12-18 | Online dry-wet polishing and grinding device for electrolytic copper foil cathode roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112743404B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116240479A (en) * | 2023-02-14 | 2023-06-09 | 九江德福科技股份有限公司 | Treatment method for surface reconstruction of titanium roller for electrolytic copper foil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106737069A (en) * | 2017-01-24 | 2017-05-31 | 佛山慧谷科技股份有限公司 | A kind of polishing and burnishing machine |
| CN111660197A (en) * | 2019-03-06 | 2020-09-15 | 人科机械设备(陕西)有限公司 | Cathode roll grinding device |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201095068Y (en) * | 2007-06-08 | 2008-08-06 | 陈靖东 | Foil generating machine electric plating wheel wet type parallel feeding vibration grinding machine |
| KR101044758B1 (en) * | 2008-08-29 | 2011-06-27 | 주식회사 포스코 | Apparatus for polishing conductor roll with electromagnet plate |
| KR101242708B1 (en) * | 2010-09-30 | 2013-03-12 | 주식회사 포스코 | Apparatus for automatic cleaning of plating roll |
| TWM553245U (en) * | 2017-08-30 | 2017-12-21 | China Steel Corp | Water-wiping device for grinding roll |
| CN207274101U (en) * | 2017-09-19 | 2018-04-27 | 佛山市普盈机械设备有限公司 | A kind of intaglio printing doctor blade device |
| CN208050578U (en) * | 2018-04-08 | 2018-11-06 | 天津忠旺铝业有限公司 | Online pinch roller cleaning device |
| CN108889643B (en) * | 2018-05-31 | 2020-11-06 | 江西省中子能源有限公司 | Electrode pole piece rolling and cleaning device for lithium ion battery production |
| CN209970478U (en) * | 2019-03-29 | 2020-01-21 | 浙江花园新能源有限公司 | Electrolytic copper foil raw foil unit polishing wheel cleaning device |
| CN209998875U (en) * | 2019-04-15 | 2020-01-31 | 九江德福科技股份有限公司 | dry-wet combined online polishing device |
| CN211708972U (en) * | 2020-01-08 | 2020-10-20 | 佛山瑞萨纳建材有限公司 | Cleaning device for polishing machine |
| CN211805182U (en) * | 2020-01-16 | 2020-10-30 | 塑华科技有限公司 | Automatic dry-wet copper foil electroplating wheel grinding machine |
| TWM594525U (en) * | 2020-01-16 | 2020-05-01 | 塑華科技有限公司 | Automatic dry-wet grinding machine for copper foil electrodeposited drum |
-
2020
- 2020-12-18 CN CN202011499565.0A patent/CN112743404B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106737069A (en) * | 2017-01-24 | 2017-05-31 | 佛山慧谷科技股份有限公司 | A kind of polishing and burnishing machine |
| CN111660197A (en) * | 2019-03-06 | 2020-09-15 | 人科机械设备(陕西)有限公司 | Cathode roll grinding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112743404A (en) | 2021-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107611350B (en) | Wide-width pole piece double-side nesting coating machine for power battery and super capacitor | |
| CN112743404B (en) | Online dry-wet polishing and grinding device for electrolytic copper foil cathode roller | |
| CN211761926U (en) | Papermaking edge cutting device | |
| CN102969546A (en) | Method for disassembly and classification collection of electrical core and device for disassembly and collection of electrical core by using the method | |
| CN215318891U (en) | Adjustable cutting mechanism is used in production of PVC hose | |
| CN112376856A (en) | Coating wheel based on roller rotates automatic fixed handle | |
| CN111054563A (en) | Novel lithium battery diaphragm spraying device and using method thereof | |
| CN209477397U (en) | A kind of lithium battery processing pole piece cutter device | |
| CN210307993U (en) | Secondary lithium ion battery pole piece slitting device | |
| CN209853387U (en) | Label printing paper feeding mechanism | |
| CN219239996U (en) | Gum dipping device for cloth composite material production | |
| CN207857237U (en) | A kind of coating mechanism for lithium ion battery | |
| CN102887639B (en) | Glass fiber online chopping machine | |
| CN110480695B (en) | Rotary module | |
| CN209758670U (en) | lithium battery copper foil cutter for new energy automobile | |
| CN210061601U (en) | Slitting machine capable of removing leftover materials for processing graphite flakes | |
| CN210449423U (en) | Material pushing structure | |
| CN109088044B (en) | Rolling and slitting integrated equipment for manufacturing new energy battery | |
| CN208051020U (en) | A kind of roller press type electrode band cutter device | |
| CN217164668U (en) | Positive electrode material ball-milling device with three-dimensional rotating structure | |
| CN219541182U (en) | Lithium battery dust collector | |
| CN201233931Y (en) | Rubberizing device for battery pole piece | |
| CN220760267U (en) | Rolling slitting device for battery production and processing | |
| CN219310191U (en) | Positive electrode material slitting device for ultralow-temperature lithium ion battery processing | |
| CN110587400A (en) | Grinding device is used in timber processing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |