CN216750020U - System for tracing pole piece from feeding station to discharging station of winding machine through caching - Google Patents
System for tracing pole piece from feeding station to discharging station of winding machine through caching Download PDFInfo
- Publication number
- CN216750020U CN216750020U CN202122829122.XU CN202122829122U CN216750020U CN 216750020 U CN216750020 U CN 216750020U CN 202122829122 U CN202122829122 U CN 202122829122U CN 216750020 U CN216750020 U CN 216750020U
- Authority
- CN
- China
- Prior art keywords
- unit
- pole piece
- color
- station
- adhesive tape
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model belongs to the technical field of battery production and manufacturing, and particularly relates to a pole piece caching and tracing system of a winding machine from a feeding station to a discharging station, which comprises a code scanning unit, a rubberizing unit, a color sensing unit and a PLC unit, wherein the code scanning unit, the rubberizing unit and the color sensing unit are all connected with the PLC unit; the code scanning unit is used for scanning the two-dimensional code of the new material roll when the material roll is changed; the adhesive sticking unit is used for sticking adhesive tapes with different colors on the pole pieces; the color sensing unit detects and compares the color of the pole piece and the color of the adhesive tape before the pole piece is wound, and outputs a detection signal; and the PLC unit is used for receiving the detection signal, binding the two-dimension code information with the semi-finished product roll core and tracing the material and the product. The utility model can accurately trace the pole piece and the pole piece information, improves the material tracing accuracy and further improves the quality of the shipped product.
Description
Technical Field
The utility model belongs to the technical field of battery production and manufacturing, and particularly relates to a pole piece caching and tracing system from a feeding station to a discharging station of a winding machine.
Background
Nowadays, green, high-efficiency secondary batteries are vigorously developed in various countries. The lithium ion battery as a novel secondary battery has the advantages of large energy density and power density, high working voltage, light weight, small volume, long cycle life, good safety, environmental protection and the like, and has wide application prospect in the aspects of portable electric appliances, electric tools, large-scale energy storage, electric traffic power supplies and the like. In the field of lithium ion battery industry, accurate tracing of pole piece information is a very important project.
In the existing tracing system, after a sensor senses an inner diameter roller of a pole piece material roll, equipment alarms to prompt that the material is used up, an operator takes out a used roll diameter barrel, a new material roll is taken to scan a material two-dimensional code of a code material, the material is fed, the new material roll and a material before material change are connected, the equipment starts to produce after the code is scanned, the production material is bound with new batch information, the feeding station of a winder before material change is moved to a discharging station, the cathode interval is more than 40 meters, the anode interval is 36 meters and is a previous film roll material, the binding error between a pole piece and the material information of the corresponding pole piece is caused, the length of the pole piece of each product is different, the traveling positions of the pole piece are different, the quantity of the buffer pole pieces of the corresponding winder is different, the pole piece fed in the previous process is abnormal in the production process, the abnormal pole piece cannot intercept the abnormally produced semi-finished product bare cell at the first time due to abnormal tracing, the semi-finished product roll cores corresponding to 1 roll of pole pieces before and after pole piece production need to be intercepted, the interception range of each roll of pole pieces of the cathode and the anode is about 1500pcs and the abnormal products is too large, large batches of manpower and material resources are wasted, material treatment is carried out, and the material processing and scrapping are carried out, so that the cost is wasted, and the rework time is wasted.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: to the not enough of prior art, provide a winder and follow material loading station to unloading station buffer memory pole piece system of traceing back, can be to pole piece and the accurate traceing back of pole piece information, improved the material and traced back the precision to promote shipment product quality.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a pole piece tracking system for a coiling machine from a feeding station to a blanking station comprises a code scanning unit, a rubberizing unit, a color sensing unit and a PLC unit, wherein the code scanning unit, the rubberizing unit and the color sensing unit are all connected to the PLC unit;
the code scanning unit is used for scanning the two-dimensional code of the new material roll when the material roll is changed;
the adhesive sticking unit is used for sticking adhesive tapes with different colors on the pole pieces;
the color sensing unit detects and compares the color of the pole piece and the color of the adhesive tape before the pole piece is wound, and outputs a detection signal;
and the PLC unit is used for receiving the detection signal, binding the two-dimension code information with the semi-finished product roll core and tracing the material and the product.
Preferably, the code scanning unit is a code scanning gun.
Preferably, the adhesive tape sticking unit comprises an adhesive tape, an adhesive tape frame and a cutter, wherein the adhesive tape is fixed on the adhesive tape frame, and the cutter is used for cutting the adhesive tape with a preset size.
Preferably, the width of the gummed paper is smaller than that of the pole piece.
Preferably, the winding device further comprises an intercepting unit, wherein the intercepting unit is connected with the PLC unit, and the PLC unit is connected with the winding device.
Preferably, the PLC monitoring system further comprises a display unit, and the display unit is connected with the PLC unit.
Preferably, the display unit is a computer or a mobile device.
The color code scanning and pasting device has the advantages that the color code scanning and pasting device comprises a code scanning unit, a pasting unit, a color sensing unit and a PLC unit, wherein the code scanning unit, the pasting unit and the color sensing unit are all connected to the PLC unit; the code scanning unit is used for scanning the two-dimensional code of the new material roll when the material roll is changed; the adhesive sticking unit is used for sticking adhesive tapes with different colors on the pole pieces; the color sensing unit detects and compares the color of the pole piece and the color of the adhesive tape before the pole piece is wound, and outputs a detection signal; and the PLC unit is used for receiving the detection signal, binding the two-dimension code information with the semi-finished product roll core and tracing the material and the product. Because the production interception of the produced semi-finished bare cell of the abnormal pole piece cannot be carried out in the first time after the abnormal pole piece is traced, the semi-finished winding cores corresponding to 1 roll of the pole piece before and after the pole piece is produced need to be intercepted, each roll of the pole piece of the cathode and the anode is about 1500pcs, the interception range of the abnormal product is too large, a large amount of manpower and material resources are wasted for material processing and scrapping, the cost and the rework time are wasted, and therefore after the anode pole piece of the cathode pole piece is used, the equipment alarms to prompt the pole piece to change the material, and the code scanning unit is used for scanning the new coil material two-dimensional code; the adhesive tape sticking unit adjusts the width of an adhesive tape frame by using a steel ruler according to the width of a produced pole piece, the width of the adhesive tape frame is smaller than that of the pole piece, the difference between the width of the adhesive tape frame and the width of the pole piece is 10mm, the blue adhesive tape is neatly fixed, and a tool knife is used for drawing the neat adhesive tape according to the position of the fixed adhesive tape frame; after the machine pole piece is used and reloaded, carrying out special blue adhesive tape splicing treatment on the upper coil pole piece and the new reloaded pole piece; before winding a pole piece of a winding machine, a color sensing unit is added at the position of a roller, the color of an object is compared with the color of a reference color which is taught in the prior art, such as the color of the pole piece and the color of an adhesive tape, and when the color detection is matched with the color range which is taught in the prior art, a detection signal is output through a corresponding channel; after detecting a blue glue signal, a color sensing unit sends the signal to an equipment PLC unit, the PLC unit sends the signal to a blue glue signal, and then sends the signal to a pole piece attached with a blue glue joint belt to be subjected to single-winding at a winding and discharging material level, a 1 st pcs wound pole piece after the single-winding is automatically bound with a material changing and new-feeding material scanning batch number, so that the pole piece and the pole piece batch number are bound one to one, after the pole piece is wound into a bare cell, pole piece information and a semi-finished product winding core are bound through a discharging and code scanning tab two-dimensional code, so that the material and the product are traced one to one, the product can be positioned and the defective product is traced, the abnormal product interception range is reduced, the interception and rework cost is reduced, the product quality is improved, and the risk of the inaccurate bad pole piece escaping from a client is reduced. According to the utility model, the pole pieces are cached from the feeding station to the discharging station of the cathode and anode pole pieces of the winding machine, the accurate tracing of the pole piece and pole piece information is realized, the material tracing accuracy is improved, the product can be quickly and accurately positioned, the tracing processing can be carried out on the defective product, the abnormal product interception range is reduced, the interception and rework cost is reduced, and the quality of the shipped product is improved. In addition, the caching pole pieces on the accurate traceability winding machine correspond to the material batches one by one, so that the material traceability accuracy is improved; when the quality problem of the incoming pole pieces in the previous process occurs, the product can be quickly and accurately positioned, and the defective product can be traced, so that the interception range of the abnormal pole pieces is reduced, and the interception rework cost is reduced; the product quality of the client is improved, and the risk of product outflow and customer complaint caused by inaccurate tracing of the battery core made of the poor pole piece of the incoming material of the previous process is avoided.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the connection of the present invention.
FIG. 2 is a flow chart of the present invention.
Detailed Description
As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be described in further detail with reference to fig. 1 to 2, but the present invention is not limited thereto.
The pole piece tracking system comprises a code scanning unit, a rubberizing unit, a color sensing unit and a PLC unit, wherein the code scanning unit, the rubberizing unit and the color sensing unit are all connected to the PLC unit; the code scanning unit is used for scanning the two-dimensional code of the new material roll when the material roll is changed; the adhesive sticking unit is used for sticking adhesive tapes with different colors on the pole pieces; the color sensing unit detects and compares the color of the pole piece and the color of the adhesive tape before the pole piece is wound, and outputs a detection signal; and the PLC unit is used for receiving the detection signal, binding the two-dimension code information with the semi-finished product roll core and tracing the material and the product.
The method comprises the following steps that (1) a semi-finished product core corresponding to each 1 roll of pole piece before and after the pole piece is produced needs to be intercepted, each roll of pole piece of a cathode and an anode is about 1500pcs, the interception range of abnormal products is too large, a large amount of manpower and material resources are wasted for material processing and scrapping, the cost is wasted, the rework time is wasted, and therefore after the anode pole piece of the cathode pole piece is used, equipment alarms to prompt pole piece material changing, and a code scanning unit is used for scanning a new coil material two-dimensional code; the adhesive tape sticking unit adjusts the width of an adhesive tape frame by using a steel ruler according to the width of a produced pole piece, the width of the adhesive tape frame is smaller than that of the pole piece, the difference between the width of the adhesive tape frame and the width of the pole piece is 10mm, the blue adhesive tape is neatly fixed, and a tool knife is used for drawing the neat adhesive tape according to the position of the fixed adhesive tape frame; after the machine pole piece is used and reloaded, carrying out special blue adhesive tape splicing treatment on the upper coil pole piece and the new reloaded pole piece; before winding a pole piece of a winding machine, a color sensing unit is added at the position of a roller, the color of an object is compared with the color of a reference color which is taught in the prior art, such as the color of the pole piece and the color of an adhesive tape, and when the color detection is matched with the color range which is taught in the prior art, a detection signal is output through a corresponding channel; after detecting a blue glue signal, a color sensing unit sends the signal to an equipment PLC unit, the PLC unit sends the signal to a blue glue signal, and then sends the signal to a pole piece attached with a blue glue joint belt to be subjected to single-winding at a winding and discharging material level, a 1 st pcs wound pole piece after the single-winding is automatically bound with a material changing and new-feeding material scanning batch number, so that the pole piece and the pole piece batch number are bound one to one, after the pole piece is wound into a bare cell, pole piece information and a semi-finished product winding core are bound through a discharging and code scanning tab two-dimensional code, so that the material and the product are traced one to one, the product can be positioned and the defective product is traced, the abnormal product interception range is reduced, the interception and rework cost is reduced, the product quality is improved, and the risk of the inaccurate bad pole piece escaping from a client is reduced.
In the pole piece tracking system for the coiling machine from the feeding station to the blanking station, the code scanning unit is a code scanning gun. Specifically, the pole piece reloads is carried out in the suggestion of equipment warning, uses to sweep the new coil stock two-dimensional code of sign indicating number rifle.
In the pole piece tracking system for the coiling machine from the feeding station to the blanking station, the rubberizing unit comprises an adhesive tape, an adhesive frame and a cutter, wherein the adhesive tape is fixed on the adhesive frame, the cutter is used for cutting the adhesive tape with a preset size, and the width of the adhesive tape is smaller than that of the pole piece. Specifically, according to the width of a produced pole piece, the width of a rubber frame is adjusted by a steel ruler, the width of the rubber frame is 10mm smaller than that of the pole piece, a blue adhesive tape is fixed neatly, the cutter is used for drawing the adhesive tape neatly according to the position of the fixed rubber frame, after the machine pole piece is used and reloaded, the upper coil material winding pole piece and a new reloaded pole piece are subjected to special blue adhesive tape splicing treatment, and the adhesive tape cannot exceed the distance in the width direction of the pole piece.
The pole piece caching and tracing system of the winding machine from the feeding station to the discharging station further comprises an interception unit, wherein the interception unit is connected with the PLC unit, and the PLC unit is connected with the winding device. The interception unit is added, so that a semi-finished product roll core corresponding to the pole piece can be intercepted, the conditions of cost waste and rework time waste are avoided, and the winding device can be controlled by the PLC unit through the interception unit.
The pole piece tracking system for the coiling machine comprises a PLC unit, a pole piece tracking unit and a pole piece tracking unit, wherein the pole piece tracking unit is connected with the PLC unit through the pole piece tracking unit. And a display unit is added, so that a user can conveniently monitor the working state of the winding machine and trace the working condition of the system, and the improvement of user experience is facilitated.
In the pole piece cache tracing system of the winding machine from the feeding station to the discharging station, the display unit is a computer or a mobile device, and can also be other devices with a display.
The working principle of the utility model is as follows:
after the cathode pole piece and the anode pole piece are used, the equipment gives an alarm to prompt the pole piece to be reloaded, and the code scanning unit is used for scanning the new coil material two-dimensional code; the adhesive tape sticking unit adjusts the width of an adhesive tape frame by using a steel ruler according to the width of a produced pole piece, the width of the adhesive tape frame is smaller than that of the pole piece, the difference between the width of the adhesive tape frame and the width of the pole piece is 10mm, the blue adhesive tape is neatly fixed, and a tool knife is used for drawing the neat adhesive tape according to the position of the fixed adhesive tape frame; after the machine pole piece is used and reloaded, carrying out special blue adhesive tape splicing treatment on the upper coil pole piece and the new reloaded pole piece; before winding a pole piece of a winding machine, a color sensing unit is added at the position of a roller, the color of an object is compared with the color of a reference color which is taught in the prior art, such as the color of the pole piece and the color of an adhesive tape, and when the color detection is matched with the color range which is taught in the prior art, a detection signal is output through a corresponding channel; after detecting a blue glue signal, a color sensing unit sends the signal to an equipment PLC unit, the PLC unit sends the signal to a blue glue signal, and then sends the signal to a pole piece attached with a blue glue joint belt to be subjected to single-winding at a winding and discharging material level, a 1 st pcs wound pole piece after the single-winding is automatically bound with a material changing and new-feeding material scanning batch number, so that the pole piece and the pole piece batch number are bound one to one, after the pole piece is wound into a bare cell, pole piece information and a semi-finished product winding core are bound through a discharging and code scanning tab two-dimensional code, so that the material and the product are traced one to one, the product can be positioned and the defective product is traced, the abnormal product interception range is reduced, the interception and rework cost is reduced, the product quality is improved, and the risk of the inaccurate bad pole piece escaping from a client is reduced.
Binding tracing is carried out according to the following mode:
a is the buffering distance from the feeding position to the blanking position;
b is a fixed distance;
length of single pole piece
A/C is the number of the blanking cells;
after the material changing and code scanning, the number of the battery cells is calculated by a feeding position coil needle, a batch before material changing is bound before the feeding number reaches B/C, and then a new batch of material codes are bound by the battery cells;
the application range is as follows: cathode coil stock and anode coil stock.
Variations and modifications to the above-described embodiments may also occur to those skilled in the art, which fall within the scope of the utility model as disclosed and taught herein. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious improvement, replacement or modification made by those skilled in the art based on the present invention is within the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (7)
1. The utility model provides a winder is from material loading station to unloading station buffer memory pole piece system of traceing back which characterized in that: the color code scanning and sticking device comprises a code scanning unit, a sticking unit, a color sensing unit and a PLC unit, wherein the code scanning unit, the sticking unit and the color sensing unit are all connected to the PLC unit;
the code scanning unit is used for scanning the two-dimensional code of the new material roll when the material roll is changed;
the adhesive sticking unit is used for sticking adhesive tapes with different colors on the pole pieces;
the color sensing unit detects and compares the color of the pole piece and the color of the adhesive tape before the pole piece is wound, and outputs a detection signal;
and the PLC unit is used for receiving the detection signal, binding the two-dimension code information with the semi-finished product roll core and tracing the material and the product.
2. The coiling machine buffer memory pole piece traceability system from feeding station to blanking station as claimed in claim 1, characterized in that: sweep a yard unit for sweeping a yard rifle.
3. The coiling machine buffer memory pole piece traceability system from feeding station to blanking station as claimed in claim 1, characterized in that: the adhesive tape sticking unit comprises an adhesive tape, an adhesive frame and a cutter, wherein the adhesive tape is fixed on the adhesive frame, and the cutter is used for cutting the adhesive tape with a preset size.
4. The coiling machine buffer memory pole piece traceability system from feeding station to blanking station as claimed in claim 1, characterized in that: the width of the gummed paper is smaller than that of the pole piece.
5. The coiling machine buffer memory pole piece traceability system from feeding station to blanking station as claimed in claim 1, characterized in that: the winding device further comprises an intercepting unit, wherein the intercepting unit is connected with the PLC unit, and the PLC unit is connected to the winding device.
6. The coiling machine buffer memory pole piece traceability system from feeding station to blanking station as claimed in claim 1, characterized in that: the PLC module also comprises a display unit, and the display unit is connected with the PLC unit.
7. The coiling machine buffer memory pole piece traceability system from feeding station to blanking station as claimed in claim 6, characterized in that: the display unit is a computer or mobile equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122829122.XU CN216750020U (en) | 2021-11-17 | 2021-11-17 | System for tracing pole piece from feeding station to discharging station of winding machine through caching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122829122.XU CN216750020U (en) | 2021-11-17 | 2021-11-17 | System for tracing pole piece from feeding station to discharging station of winding machine through caching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216750020U true CN216750020U (en) | 2022-06-14 |
Family
ID=81929800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122829122.XU Active CN216750020U (en) | 2021-11-17 | 2021-11-17 | System for tracing pole piece from feeding station to discharging station of winding machine through caching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216750020U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116093413A (en) * | 2023-04-07 | 2023-05-09 | 江苏时代新能源科技有限公司 | Control method, system, equipment, storage medium and program product for cell manufacturing process |
| CN116433253A (en) * | 2023-04-28 | 2023-07-14 | 广州市易鸿智能装备有限公司 | Method, device, equipment and storage medium for managing product quality traceability data |
-
2021
- 2021-11-17 CN CN202122829122.XU patent/CN216750020U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116093413A (en) * | 2023-04-07 | 2023-05-09 | 江苏时代新能源科技有限公司 | Control method, system, equipment, storage medium and program product for cell manufacturing process |
| CN116093413B (en) * | 2023-04-07 | 2023-09-01 | 江苏时代新能源科技有限公司 | Control method, system, equipment, storage medium and program product for cell manufacturing process |
| CN116433253A (en) * | 2023-04-28 | 2023-07-14 | 广州市易鸿智能装备有限公司 | Method, device, equipment and storage medium for managing product quality traceability data |
| CN116433253B (en) * | 2023-04-28 | 2024-02-06 | 广州市易鸿智能装备有限公司 | Method, device, equipment and storage medium for managing product quality traceability data |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216750020U (en) | System for tracing pole piece from feeding station to discharging station of winding machine through caching | |
| CN106077973B (en) | A kind of lug molding cutting apparatus | |
| CN109524704A (en) | Tab dislocation method of adjustment, system, electronic equipment and storage medium | |
| CN108520981B (en) | Intelligent die cutting and winding integrated machine and working flow thereof | |
| CN106992317A (en) | A kind of double up- coilers of cylinder type lithium battery | |
| CN107263600A (en) | Hull cell cutter device, hull cell diced system and its method | |
| CN104269579A (en) | Preparation method of cell and cylindrical battery | |
| CN113182703B (en) | Device and method for reducing unreeling residual scrappage of lithium battery reeling machine | |
| CN109738447B (en) | Automatic deviation rectifying method and device for battery pole piece protective adhesive | |
| CN108400369A (en) | Power battery electrode ear mold cuts winding integrated machine | |
| CN108808115A (en) | Electricity core winding machine | |
| CN111209989A (en) | Method for tracing information of battery cell of cylindrical lithium ion battery | |
| CN105810990B (en) | A kind of electric core winding mechanism | |
| CN104422887A (en) | Method and equipment for testing electrical property of lithium battery | |
| CN105742720B (en) | Electric core winding laminating machine winding device | |
| CN208208909U (en) | Electricity core winding machine | |
| CN100440605C (en) | Lithium ion cell internal pressure measuring method | |
| CN202308206U (en) | Pole piece tension control system of lithium ion battery core coiler | |
| CN203518957U (en) | Detection system of laser scribing morphology | |
| CN117181891B (en) | Material belt detection method and die cutting machine | |
| CN218574124U (en) | Coating device for automatically detecting flatness of battery sheet | |
| CN208423068U (en) | Power battery electrode ear mold cuts winding integrated machine | |
| CN208674286U (en) | A kind of quadrate lithium battery film-making winding integrated equipment | |
| CN219694897U (en) | Pinhole defect detection device for lithium battery pole piece | |
| CN208352464U (en) | A kind of intelligence cross cutting winding integrated machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |