CN219093200U - Stretch bending straightening device for aluminum strip processing - Google Patents
Stretch bending straightening device for aluminum strip processing Download PDFInfo
- Publication number
- CN219093200U CN219093200U CN202320098055.5U CN202320098055U CN219093200U CN 219093200 U CN219093200 U CN 219093200U CN 202320098055 U CN202320098055 U CN 202320098055U CN 219093200 U CN219093200 U CN 219093200U
- Authority
- CN
- China
- Prior art keywords
- straightening
- water
- aluminum strip
- stretch bending
- dust removing
- 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
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
The utility model relates to the technical field of aluminum strip processing, and discloses a stretch bending straightening device for aluminum strip processing, which comprises a straightening box, wherein two straightening rollers positioned on the upper side and the lower side of an aluminum strip are arranged in the straightening box, water outlets are formed in the two straightening rollers, two limiting frames positioned on the upper side and the lower side of the aluminum strip are arranged in the straightening box, one side, away from the straightening rollers, of the opposite surfaces of the two limiting frames is connected with a dust removing scraping plate, and the opposite surfaces of the two dust removing scraping plates are attached to the aluminum strip. According to the utility model, the aluminum strip can be firmly clamped by the dust removing scraping plate and dust on the surface of the aluminum strip can be scraped as much as possible, so that the dust removing efficiency is improved, the water flow sprayed from the water outlet can jack up the dust removing scraping plate and enable sewage at the top of the dust removing scraping plate to rapidly leave the aluminum strip, and the part of the dust removing scraping plate, which is far away from one side of the straightening roller, can be infiltrated again for scraping, so that the dust removing speed is further promoted.
Description
Technical Field
The utility model relates to the technical field of aluminum strip processing, in particular to a stretch bending straightening device for aluminum strip processing.
Background
At present, the aluminum strip is required to pass through a stretch bending straightening process after being produced, and the aluminum strip after being produced meets the production process, so that a stretch bending straightening device is required to be used for processing the aluminum strip, in the prior art, the stretch bending straightening device consists of a feeding mechanism, a cleaning mechanism, a straightening mechanism and a winding mechanism, because the distance between the feeding mechanism and the straightening mechanism is far, dust can be accumulated when the aluminum strip is transmitted in the section, the aluminum strip needs to be cleaned before entering the straightening mechanism, the dust is prevented from affecting the operation of the straightening mechanism, the cleaning mechanism used in the prior art utilizes a flushing nozzle to complete the dust removal cleaning function, but because the aluminum strip has a certain width, the coverage area of the nozzle is limited, the spraying angle of water flow is limited, the aluminum strip is usually horizontally placed, and the dust at the top of the aluminum strip can not necessarily be flushed completely in time, so that the aluminum strip needs to be improved.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a stretch bending straightening device for aluminum strip processing, which has the advantage of high dust removal efficiency.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a stretch bending straightener for aluminium strip processing, includes the straightening case, the inside of straightening case is provided with two straightening rollers that are located the upper and lower both sides of aluminium strip, two the delivery port has all been seted up on the straightening roller, the inside of straightening case is provided with two spacing that are located the upper and lower both sides of aluminium strip, two spacing is kept away from the one side of straightening roller in opposite directions and is all connected with a dust removal scraper blade, two the opposite directions face and the laminating of aluminium strip of dust removal scraper blade, both sides all are connected with the stopper around the spacing, two spacing grooves about the front and back both sides of straightening case inner chamber have all been seted up, stopper slip joint is in the inside of spacing groove, the inside of spacing groove is provided with positioning spring, positioning spring's both ends are connected with stopper and the inner wall of spacing groove respectively.
As a preferable technical scheme of the utility model, two water outlets formed on the two straightening rollers are symmetrical relative to the aluminum strip.
As a preferable technical scheme of the utility model, the filter plate is embedded in the water outlet, the peripheral diameter of the filter plate is the same as that of the straightening roller, and the outer surface of the filter plate is smoothly connected with the outer surface of the straightening roller.
As a preferable technical scheme of the utility model, the two dust removing scrapers are symmetrical relative to the aluminum strip, one side of the dust removing scrapers, which is close to the straightening roller, is far away from the aluminum strip, and one side of the dust removing scrapers, which is far away from the straightening roller, is attached to the top surface or the bottom surface of the aluminum strip.
As a preferable technical scheme of the utility model, the inside of the straightening roller is hermetically sleeved with the directional water delivery assembly, the front end of the directional water delivery assembly is fixedly connected with the water inlet pipe, the front end of the water inlet pipe penetrates through the straightening roller and extends to the front of the straightening box, the rear ends of the two straightening rollers are respectively and fixedly connected with a driven gear positioned on the back of the straightening box through a short shaft, the two driven gears are meshed with each other, a power motor is arranged in the straightening box, and the rear end of an output shaft of the power motor penetrates through the straightening box and is fixedly connected with a driving gear which is meshed with one of the driven gears.
As a preferable technical scheme of the utility model, the directional water delivery assembly comprises a water delivery pipe which is sleeved in the straightening roller in a sealing way, the front end of the water delivery pipe is provided with a water inlet which is communicated with a water inlet pipe, one side, close to a dust removal scraping plate, of the middle part of the water delivery pipe is provided with a first water spraying hole, and the side surface of the water delivery pipe is provided with a plurality of second water spraying holes which are positioned on the same straight line with the first water spraying hole.
As a preferable technical scheme of the utility model, the two parts of the second water spraying holes at the two sides of the first water spraying hole are mutually symmetrical, one end of the second water spraying hole at the two ends of the second water spraying hole, which is positioned in the water conveying pipe, is close to the center of the water conveying pipe, and one end of the second water spraying hole at the two ends of the second water spraying hole, which is positioned outside the water conveying pipe, is far from the center of the water conveying pipe.
As a preferable technical scheme of the utility model, the inside of the straightening box is movably clamped with two connecting frames positioned at the front side and the rear side of the upper straightening roller, the inside of the straightening box is provided with a compression spring positioned at the top of the connecting frame, and the connecting frame is fixedly sleeved outside one of the water inlet pipes.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, the two limiting frames can move up and down stably through the cooperation of the limiting blocks and the limiting grooves, so that the two dust removing scrapers can firmly clamp the aluminum belt and scrape dust on the surface of the aluminum belt as much as possible under the elastic restoring action of the positioning springs, the dust removing efficiency is improved, the water flow sprayed from the water outlet can jack up the dust removing scrapers and enable sewage on the top of the dust removing scrapers to leave the aluminum belt rapidly, and the part of the dust removing scrapers, which is far away from one side of the straightening roller, can be infiltrated again so as to scrape, so that the dust removing speed is further promoted.
2. According to the utility model, the water flow can be sprayed along a fixed angle under the action of the continuous intermittent rotary straightening roller through the cooperation of the directional water delivery assembly and the water outlet, so that the effect of infiltrating and adhering firm foreign matters is achieved, the intermittent spraying can greatly shorten the flow of the water, and the water loss is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a front view of the present utility model;
FIG. 3 is a cross-sectional view of the front face of the present utility model;
FIG. 4 is a front view of the section of FIG. 3;
FIG. 5 is a schematic view of a directional water delivery assembly;
FIG. 6 is a top view, in cross-section, of the top of the directional water delivery assembly.
In the figure: 1. straightening the box; 2. straightening rollers; 3. a water outlet; 4. a limiting frame; 5. a dust removal scraper; 6. a limiting block; 7. a limit groove; 8. a positioning spring; 9. a directional water delivery assembly; 91. a water pipe; 92. a water inlet; 93. a first water spraying hole; 94. a second water spraying hole; 10. a connecting frame; 11. a compression spring; 12. a water inlet pipe; 13. a power motor.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present utility model are clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are also within the scope of the utility model.
As shown in fig. 1 to 6, the stretch bending straightening device for aluminum strip processing provided by the utility model comprises a straightening box 1, wherein two straightening rollers 2 positioned on the upper side and the lower side of an aluminum strip are arranged in the straightening box 1, water outlets 3 are formed in the two straightening rollers 2, two limiting brackets 4 positioned on the upper side and the lower side of the aluminum strip are arranged in the straightening box 1, one sides, far away from the straightening rollers 2, of opposite surfaces of the two limiting brackets 4 are respectively connected with a dust removing scraping plate 5, opposite surfaces of the two dust removing scraping plates 5 are attached to the aluminum strip, the front side and the rear side of the limiting brackets 4 are respectively connected with a limiting block 6, the front side and the rear side of an inner cavity of the straightening box 1 are respectively provided with an upper limiting groove 7 and a lower limiting groove 7, the limiting blocks 6 are in sliding clamping connection with the inside of the limiting grooves 7, positioning springs 8 are arranged in the inside the limiting grooves 7, and two ends of each positioning spring 8 are respectively connected with the limiting blocks 6 and the inner walls of the limiting grooves 7;
can ensure through the cooperation of stopper 6 and spacing groove 7 that two spacing 4 can be stable up-and-down motion, and then make two dust removal scraper blade 5 can firm centre gripping aluminium strip and scrape the dust on its surface as much as possible under the elasticity recovery effect of positioning spring 8, improve dust removal efficiency, and the rivers that are sprayed by delivery port 3 department can jack-up dust removal scraper blade 5 and make the sewage at its top leave the aluminium strip fast, and can keep away from the aluminium strip of straightening roller 2 one side part to dust removal scraper blade 5 and infiltrate so as to strike off again, thereby further promote the speed of dust removal. Since the dust on the surface is scraped off by the dust removing blade 5, the subsequent water consumption can be reduced.
Wherein, two water outlets 3 arranged on the two straightening rollers 2 are symmetrical relative to the aluminum strip;
as shown in fig. 3 and 4, the water outlets 3 are arranged along the axial direction of the straightening roller 2 to form a strip-like water outlet product, and the symmetrical arrangement of the two water outlets can ensure that water flow can be sprayed towards a fixed angle and can be matched with the straightening roller 2 to be rolled and straightened.
Wherein, the inside of delivery port 3 has embedded the filter, and the periphery diameter of filter is the same with the periphery diameter of straightening roller 2, and the surface of filter is connected with the surface of straightening roller 2 is smooth. The water sprayed from the water outlet 3 can be filtered by the arrangement of the filter plate.
Wherein, two dust removal scraper blades 5 are relative aluminum strip symmetry, and the aluminum strip is kept away from to one side that dust removal scraper blade 5 is close to straightening roller 2, and one side that dust removal scraper blade 5 kept away from straightening roller 2 laminating in the top surface or the bottom surface of aluminum strip.
The inner parts of the straightening rollers 2 are hermetically sleeved with a directional water delivery assembly 9, the front ends of the directional water delivery assembly 9 are fixedly connected with a water inlet pipe 12, the front ends of the water inlet pipe 12 penetrate through the straightening rollers 2 and extend to the front of the straightening box 1, the rear ends of the two straightening rollers 2 are respectively and fixedly connected with a driven gear positioned on the back of the straightening box 1 through short shafts, the two driven gears are meshed with each other, a power motor 13 is arranged in the straightening box 1, the rear ends of output shafts of the power motor 13 penetrate through the straightening box 1 and are fixedly connected with a driving gear, and the driving gear is meshed with one of the driven gears;
the water flow can be sprayed along a fixed angle under the action of the continuous rotation straightening roller 2 through the cooperation of the directional water delivery assembly 9 and the water outlet 3, so that the effect of infiltrating and adhering firm foreign matters is achieved, the intermittent spraying can greatly shorten the flow of the water, and the water loss is reduced.
The directional water delivery assembly 9 comprises a water delivery pipe 91 which is sleeved in the straightening roller 2 in a sealing way, a water inlet 92 is formed in the front end of the water delivery pipe 91, the water inlet 92 is communicated with the water inlet pipe 12, a first water spraying hole 93 is formed in the middle of the water delivery pipe 91 at one side close to the dust removal scraping plate 5, and a plurality of second water spraying holes 94 which are positioned on the same straight line with the first water spraying holes 93 are formed in the side face of the water delivery pipe 91;
in the continuous rotation process of the straightening roller 2, when the second water spraying holes 94 are overlapped with the water outlet 3, water in the directional water output assembly 9 can be sprayed outwards through the second water spraying holes 94 and the water outlet so as to realize intermittent water spraying, and the sprayed water can jack up the dust removing scraping plate 5 through the first water spraying holes 93 and the second water spraying holes 94 so that the water infiltrates foreign matters on the surface of the aluminum strip far away from one side of the straightening roller 2, and meanwhile, the lifted dust removing scraping plate 5 can quickly guide out sewage at the top of the dust removing scraping plate, so that the speed of the dust removing scraping plate leaving the aluminum strip is accelerated, and the effect of improving the dust removing speed is achieved.
Wherein, two parts of the second water spraying holes 94 positioned at two sides of the first water spraying hole 93 are symmetrical with each other, one end of the second water spraying holes 94 positioned inside the water conveying pipe 91 is close to the center of the water conveying pipe 91, and one end of the second water spraying holes 94 positioned outside the water conveying pipe 91 is far away from the center of the water conveying pipe 91;
the second water spraying holes 94 can enable the sprayed water flow to diffuse towards the front side and the rear side of the dust removing scraping plate 5, so that the speed of the dust carrying flushing dust leaving along the surface of the aluminum strip is increased, and the aluminum strip moving to the two straightening rollers 2 is ensured to be completely removed. As shown in fig. 5, the size of the first water outlet 93 is larger than that of the second water outlet 94, so that it is possible to secure much water in the middle and to improve the efficiency of water flowing to both sides.
Wherein, two link 10 that the inside activity joint of straightening box 1 is located the both sides around the straightening roller 2 of top, and the inside of straightening box 1 is provided with the hold-down spring 11 that is located link 10 top, and link 10 is fixed to cup joint in the outside of one of them inlet tube 12. The position of the upper straightening roller 2 is limited through the connecting frame 10 and the compression spring 11, so that the situation that the upper straightening roller 2 and the lower straightening roller 2 are too far or too close to each other to achieve the effect of compression straightening is avoided.
The working principle and the using flow of the utility model are as follows:
the aluminum strip output by the feeding mechanism enters through the left end of the straightening box 1 and is output to the receiving mechanism from the right side of the straightening box 1, when the aluminum strip enters into the straightening box 1, the upper and lower dust removing scrapers 5 can scrape most of dust on the surface of the aluminum strip, part of the sticky foreign matters can be removed under the infiltration of water, the dust washed by water flows along with the water flows to the top of the dust removing scrapers 5, and the dust is diffused to the front and rear sides under the blocking of the limiting frame 4 until the dust is separated from the aluminum strip;
the two straightening rollers 2 can continuously and intermittently spray water flow under the cooperation of the first water spraying holes 93, the second water spraying holes 94 and the water outlet 3 when rotating to finish the straightening of the rollers, so that the sprayed water can be ensured to completely cover the aluminum strip while scouring is achieved, and the sprayed water can be rapidly spread on two sides under the action of the second water spraying holes 94 to directly take away part of dust.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solution of the present utility model, and not limiting thereof; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will appreciate that; the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (8)
1. Stretch bending straightener is used in aluminium strip processing, including straightening case (1), its characterized in that: the utility model discloses a straightening box, including straightening box (1), locating spring (8) are connected with the inner wall of stopper (6) and spacing groove (7) respectively, the inside of straightening box (1) is provided with two straightening rollers (2) that are located both sides about the aluminium strip, two all offer delivery port (3) on straightening roller (2), the inside of straightening box (1) is provided with two spacing frames (4) that are located both sides about the aluminium strip, two one side that straightening roller (2) was kept away from to spacing frame (4) opposite sides all is connected with one dust removal scraper blade (5) opposite sides and laminating of aluminium strip, both sides all are connected with stopper (6) around spacing frame (4), two spacing grooves (7) about the front and back both sides of straightening box (1) inner chamber have all been offered, the inside of stopper (6) slip joint in spacing groove (7), the inside of spacing groove (7) is provided with locating spring (8).
2. The stretch bending straightener for aluminum strip processing as recited in claim 1, wherein: two water outlets (3) formed in the two straightening rollers (2) are symmetrical relative to the aluminum strip.
3. The stretch bending straightener for aluminum strip processing as recited in claim 2, wherein: the inside of delivery port (3) is embedded with the filter, the periphery diameter of filter is the same with the periphery diameter of straightening roller (2), the surface of filter is connected with the surface of straightening roller (2) smoothness.
4. The stretch bending straightener for aluminum strip processing as recited in claim 1, wherein: two dust removal scraper blade (5) are relative aluminum strip symmetry, the aluminum strip is kept away from to one side that dust removal scraper blade (5) are close to straightening roller (2), the top surface or the bottom surface in the aluminum strip is laminated to one side that dust removal scraper blade (5) are kept away from straightening roller (2).
5. The stretch bending straightener for aluminum strip processing as recited in claim 1, wherein: the inside sealing of straightening roller (2) has cup jointed directional water delivery subassembly (9), the front end fixedly connected with inlet tube (12) of directional water delivery subassembly (9), inlet tube (12) front end runs through straightening roller (2) and extends to the place ahead of straightening case (1), two the rear end of straightening roller (2) is fixedly connected with a driven gear that is located straightening case (1) back respectively through the minor axis, and two driven gears intermesh, the inside of straightening case (1) is provided with motor power (13), the rear end of motor power (13) output shaft runs through straightening case (1) and fixedly connected with driving gear, the driving gear meshes with one of them driven gear.
6. The stretch bending straightener for aluminum strip processing as claimed in claim 5, wherein: the directional water delivery assembly (9) comprises a water delivery pipe (91) which is sleeved inside the straightening roller (2) in a sealing mode, a water inlet (92) is formed in the front end of the water delivery pipe (91), the water inlet (92) is communicated with a water inlet pipe (12), a first water spraying hole (93) is formed in one side, close to the dust removal scraping plate (5), of the middle portion of the water delivery pipe (91), and a plurality of second water spraying holes (94) which are located on the same straight line of the first water spraying holes (93) are formed in the side face of the water delivery pipe (91).
7. The stretch bending straightener for aluminum strip processing as claimed in claim 6, wherein: the two parts of the second water spraying holes (94) positioned on the two sides of the first water spraying hole (93) are symmetrical with each other, one end, positioned inside the water conveying pipe (91), of the two ends of the second water spraying hole (94) is close to the center of the water conveying pipe (91), and one end, positioned outside the water conveying pipe (91), of the two ends of the second water spraying hole (94) is far away from the center of the water conveying pipe (91).
8. The stretch bending straightener for aluminum strip processing as claimed in claim 5, wherein: the inside activity joint of straightening case (1) has two link (10) that are located the both sides around top straightening roller (2), the inside of straightening case (1) is provided with compression spring (11) that are located link (10) top, link (10) are fixed cup joint in the outside of one of them inlet tube (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320098055.5U CN219093200U (en) | 2023-02-01 | 2023-02-01 | Stretch bending straightening device for aluminum strip processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320098055.5U CN219093200U (en) | 2023-02-01 | 2023-02-01 | Stretch bending straightening device for aluminum strip processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219093200U true CN219093200U (en) | 2023-05-30 |
Family
ID=86461432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320098055.5U Active CN219093200U (en) | 2023-02-01 | 2023-02-01 | Stretch bending straightening device for aluminum strip processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219093200U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117840100A (en) * | 2024-03-07 | 2024-04-09 | 国网山东省电力公司昌邑市供电公司 | Wire processing device for power engineering |
-
2023
- 2023-02-01 CN CN202320098055.5U patent/CN219093200U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117840100A (en) * | 2024-03-07 | 2024-04-09 | 国网山东省电力公司昌邑市供电公司 | Wire processing device for power engineering |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213223667U (en) | Toughened glass belt cleaning device | |
| CN219093200U (en) | Stretch bending straightening device for aluminum strip processing | |
| CN209935327U (en) | Online roller wiping device of roller press | |
| CN117259482B (en) | Copper foil washing device and washing method of raw foil machine | |
| CN210396581U (en) | Aluminum alloy window with cleaning device | |
| CN107625492B (en) | Mopping robot and using method thereof | |
| CN113000505A (en) | Automatic descaling device for inner wall of industrial pipeline and use method | |
| CN108404463A (en) | A kind of sewage treatment equipment being conducive to cleaning | |
| CN213763013U (en) | Aluminum product surface cleaning device is used in freezer door frame processing | |
| CN114164637A (en) | Fluff suction device convenient to clean | |
| CN210735107U (en) | Crystallizer oil storage tank | |
| CN117680407A (en) | Steel belt cleaning equipment is used in flux cored wire production | |
| CN116083831B (en) | Middle-width strip steel for cultivation shed and preparation method thereof | |
| CN117457537A (en) | Wafer cleaning device and cleaning method thereof | |
| CN216633687U (en) | Roller grinding device with waste recycling function | |
| CN213231549U (en) | Internal inflow grid with screen plates not easy to block | |
| CN211386142U (en) | Hydraulic pressure pipe belt cleaning device is used in hydraulic pressure spare production | |
| CN212491859U (en) | Quick and efficient online quick filter cloth washing device | |
| CN210078993U (en) | Defeated filter equipment that uses of collection | |
| CN216755643U (en) | Device for back-and-forth automatic high-pressure washing of filter cloth of belt filter | |
| CN209368500U (en) | A kind of desizing rinsing machine | |
| CN218692625U (en) | Roller auxiliary device for rolling building template steel | |
| CN220005442U (en) | Cleaning device for stainless steel wire production | |
| CN220939494U (en) | Filter cloth cleaning structure of rubber belt type vacuum filter | |
| CN105105294A (en) | Efficient cleaning machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |