CN214109093U - Gear hobbing machine coolant liquid cyclic utilization device - Google Patents
Gear hobbing machine coolant liquid cyclic utilization device Download PDFInfo
- Publication number
- CN214109093U CN214109093U CN202023348121.5U CN202023348121U CN214109093U CN 214109093 U CN214109093 U CN 214109093U CN 202023348121 U CN202023348121 U CN 202023348121U CN 214109093 U CN214109093 U CN 214109093U
- Authority
- CN
- China
- Prior art keywords
- cooling liquid
- slag
- recovery box
- hobbing machine
- gear hobbing
- 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
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
The application relates to a cooling liquid recycling device of a gear hobbing machine, which comprises a cooling liquid collecting hopper, a liquid-slag separating assembly, a cooling liquid recovery box and a cooling liquid spray pipe; the liquid-slag separation component comprises a cooling liquid filtering conveyor belt, the cooling liquid filtering conveyor belt is made of a permeable material, one end of the cooling liquid filtering conveyor belt is provided with a slag recovery box, and the slag recovery box is positioned on one side of the cooling liquid recovery box; one end of the cooling liquid spray pipe is communicated with the cooling liquid recovery box, and the other end of the cooling liquid spray pipe faces the hob of the gear hobbing machine. The cooling liquid and the material slag fall into a cooling liquid collecting hopper together and then fall onto a cooling liquid filtering conveying belt, the cooling liquid permeates from the cooling liquid filtering conveying belt and falls into a cooling liquid recovery box, the material slag is also blocked by the cooling liquid filtering conveying belt and drives the material slag recovery box to separate and recover the cooling liquid and the material slag, and the cooling liquid in the cooling liquid recovery box is sprayed to a hob of the hobbing machine again through a cooling liquid spraying pipe. This application has the cyclic utilization who realizes the coolant liquid, reduces extravagant effect.
Description
Technical Field
The application relates to the field of gear hobbing machines, in particular to a coolant recycling device of a gear hobbing machine.
Background
The hobbing machine is one of the most widely used gear cutting machines, and can cut straight teeth, helical cylindrical gears, worm gears, chain wheels, etc. The hobbing machine is a gear processing machine for processing straight teeth, helical teeth, herringbone-tooth cylindrical gears and worm gears by a hobbing cutter according to a generating method, and when the machine uses a special hobbing cutter, various workpieces with special tooth shapes such as splines, chain wheels and the like can be processed.
When the gear hobbing machine is processed, cooling liquid needs to be sprayed for cooling, metal slag is often mixed with the used cooling liquid after the used cooling liquid is collected, and pipelines are easily blocked when the used cooling liquid is reused.
In view of the above-mentioned related art, the inventors consider that the existing cooling liquid has a defect of being difficult to reuse after being recovered.
SUMMERY OF THE UTILITY MODEL
In order to enable the coolant of the hobbing machine to be recycled, the application provides a hobbing machine coolant recycling device.
The application provides a gear hobbing machine coolant liquid cyclic utilization device adopts following technical scheme:
a cooling liquid recycling device of a gear hobbing machine comprises a cooling liquid collecting bucket arranged on the lower side of a gear hobbing machine, a liquid-slag separating assembly arranged on the lower side of the cooling liquid collecting bucket, a cooling liquid recovery box arranged on the lower side of the liquid-slag separating assembly and a cooling liquid spray pipe used for guiding cooling liquid in the cooling liquid recovery box to the gear hobbing machine; the liquid-slag separation assembly comprises a cooling liquid filtering conveyor belt, the cooling liquid filtering conveyor belt is made of a water-permeable material, a material slag recovery box is arranged at one end of the cooling liquid filtering conveyor belt, and the material slag recovery box is positioned on one side of the cooling liquid recovery box; one end of the cooling liquid spray pipe is communicated with the cooling liquid recovery box, and the other end of the cooling liquid spray pipe faces a hob of the gear hobbing machine.
Through adopting above-mentioned technical scheme, coolant liquid and material sediment together fall in the coolant liquid collects the fill, then fall on the coolant liquid filters the conveyer belt, the coolant liquid permeates from the coolant liquid filters the conveyer belt and drops to the coolant liquid collection box in, the material sediment is also filtered the conveyer belt by the coolant liquid and is blocked and drive in the material sediment collection box, make coolant liquid and material sediment separation and separately retrieve, the coolant liquid in the coolant liquid collection box spouts the hobbing cutter to the gear hobbing machine once more through the coolant liquid spray tube, realize the cyclic utilization of coolant liquid, waste has been reduced.
Optionally, a liquid level observation window is arranged on one side wall of the cooling liquid recovery box, and the liquid level observation window is arranged in a transparent mode.
Through adopting above-mentioned technical scheme, can observe the coolant liquid of coolant liquid recovery incasement through the liquid level observation window how much, can in time add the coolant liquid to the coolant liquid recovery incasement, avoid the not enough condition of coolant liquid as far as possible.
Optionally, the coolant liquid filters the conveyer belt upside and is equipped with cooling hydraulic pressure and strains the conveyer belt, cooling hydraulic pressure is strained the conveyer belt and is located the coolant liquid and collects one side that the fill is close to the material sediment collection box.
Through adopting above-mentioned technical scheme, the conveyer belt is strained to cooling hydraulic pressure and coolant liquid filters the conveyer belt combined action and extrudees the material sediment, makes the coolant liquid on the material sediment can filter totally as far as.
Optionally, the cooling hydraulic filter conveyor belt comprises a guide section and a water pressing section, the guide section and the cooling liquid filter conveyor belt are arranged at an angle, a guide cavity is formed between the guide section and the cooling liquid filter section, and the cross-sectional area of the guide cavity is gradually reduced from the position far away from the water pressing section to the position close to one side of the water pressing section.
By adopting the technical scheme, the guide cavity has a size from large to small, so that the material slag can smoothly enter the water pressing section from the guide cavity of the filtering section.
Optionally, a scraping plate is arranged on the lower side of one end, located in the material residue recovery box, of the cooling liquid filtering conveying belt and is abutted to the cooling liquid filtering conveying belt.
Through adopting above-mentioned technical scheme, along with the motion of coolant liquid filter conveyer belt, scrape the flitch and scrape the material sediment on the coolant liquid filter conveyer belt, make the material sediment can be smooth break away from the coolant liquid filter conveyer belt and enter into in the material sediment collection box.
Optionally, a brush is arranged on one side, close to the cooling liquid recovery box, of the scraping plate, the brush is located in the material residue recovery box, and the brush is abutted to the cooling liquid filtering conveying belt.
Through adopting above-mentioned technical scheme, the brush is cleared up coolant liquid filter conveyor belt, prevents as far as possible that there is the material sediment to enter into the coolant liquid collection box top and drop to the coolant liquid collection box in, retrieves to cause the influence to the coolant liquid.
Optionally, one side of the brush, which is far away from the scraper plate, is provided with an air blowing pipe, and the air blowing pipe faces the coolant filtering and conveying belt.
Through adopting above-mentioned technical scheme, blow to coolant liquid filter conveyer belt through the gas blow pipe, make coolant liquid filter conveyer belt by the cleaner of clearance, better prevent that the material sediment from entering into in the coolant liquid collection box.
Optionally, one side of the material slag recycling bin, which is far away from the cooling liquid filtering conveyor belt, is provided with a material discharging plate, one end of the material discharging plate is hinged to the material slag recycling bin, and the other end of the material slag recycling bin is fixedly connected with the material slag recycling bin in an openable mode.
Through adopting above-mentioned technical scheme, open out the flitch, make the material sediment can take out, go out the flitch rotation and open and be convenient for take out the material sediment.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the cooling liquid and the material slag are separated and recovered, and the cooling liquid in the cooling liquid recovery box is sprayed to the hob of the gear hobbing machine again through the cooling liquid spray pipe, so that the recycling of the cooling liquid is realized, and the waste is reduced.
Drawings
Fig. 1 is a coolant recycling device for a gear hobbing machine in an embodiment of the present application.
Description of reference numerals: 1. a cooling liquid collecting hopper; 2. a liquid-slag separation assembly; 21. a coolant filter conveyor; 22. cooling the hydraulic filter conveyor belt; 221. a guide section; 222. a water pressing section; 223. a guide cavity; 3. a coolant recovery tank; 31. a liquid level observation window; 32. a water pump; 4. a material residue recovery box; 41. a discharge plate; 42. a driving magnet; 43. a passive magnet; 5. a coolant spray tube; 6. a scraping plate; 7. a brush; 8. an air blowing pipe; 9. hobbing cutters; 91. and (5) a workpiece.
Detailed Description
The present application is described in further detail below with reference to fig. 1.
The hob 9 of the gear hobbing machine and the workpiece 91 to be machined.
The embodiment of the application discloses gear hobbing machine coolant liquid cyclic utilization device.
Referring to fig. 1, the cooling liquid recycling device of the gear hobbing machine comprises a cooling liquid collecting hopper 1, a liquid-slag separating assembly 2 and a cooling liquid recycling box 3 which are sequentially arranged from top to bottom in the vertical direction below a hobbing cutter 9; a cooling liquid spray pipe 5 is arranged on one side of the cooling liquid recovery box 3, and a material residue recovery box 4 is arranged on the other side; one end of the cooling liquid spray pipe 5 is communicated with the cooling liquid recovery box 3, and the other end faces to a hob 9 of the gear hobbing machine.
The cooling liquid spray pipe 5 sprays the cooling liquid to a hob 9 and a workpiece 91 of the gear hobbing machine, slag generated by processing falls into the cooling liquid collecting hopper 1 along with the cooling liquid and then falls onto the liquid-slag separating assembly 2, and the liquid-slag separating assembly 2 enables the cooling liquid to be filtered into the cooling liquid recycling box 3 and enables the slag to be recycled into the slag recycling box 4. The cooling liquid in the cooling liquid recovery box 3 is continuously sprayed to the hob 9 of the gear hobbing machine through the cooling liquid spray pipe 5, so that the cooling liquid can be collected and recycled, and the waste is reduced.
For better separation of the cooling liquid and the slag, the liquid-slag separation assembly 2 comprises a cooling liquid filter conveyor belt 21 and a cooling liquid filter conveyor belt 22. The coolant liquid filters conveyer belt 21 and locates coolant liquid collection hopper 1 below, and coolant liquid filters conveyer belt 21 one end and is located coolant liquid recovery box 3 tops, the other end is located material sediment collection box 4, and coolant liquid filters conveyer belt 21 and makes for permeable material, like weaving cloth, makes the coolant liquid can pass through coolant liquid filters conveyer belt 21, but realization coolant liquid material sediment separation. The cooling liquid filter-pressing conveyor belt 22 is positioned on the upper side of the cooling liquid filter-pressing conveyor belt 21, and the cooling liquid filter-pressing conveyor belt 22 is positioned on one side of the cooling liquid collecting hopper 1 close to the slag recovery box 4. The cooling hydraulic filter belt 22 comprises a guide section 221 and a water pressing section 222, wherein the water pressing section 222 is positioned on one side close to the cooling liquid collecting hopper 1, and the water pressing section 222 is positioned on one side close to the slag recovery box 4. The pressurized-water section 222 is obliquely arranged and forms a certain angle with the cooling liquid filter conveyor belt 21 to form a guide cavity 223, the cross-sectional area of the guide cavity 223 is gradually reduced from one side of the guide section 221, which is close to the cooling liquid collecting hopper 1, to one side of the guide section 221, which is far away from the cooling liquid collecting hopper 1, so that the cooling liquid and the material slag in the cooling liquid collecting hopper 1 can more easily enter the guide cavity 223 and enter between the pressurized-water section 222 of the cooling liquid filter press conveyor belt 22 and the cooling liquid filter conveyor belt 21.
Make coolant liquid filter-pressing conveyer belt 22 pressurized-water section 222 and coolant liquid filter conveyer belt 21 extrusion coolant liquid and material sediment, make the coolant liquid more permeate coolant liquid filter conveyer belt 21 and enter into in the coolant liquid collection box 3, the separation of the coolant liquid of being convenient for and material sediment.
In order to prevent the slag from being brought above the cooling liquid recovery box 3 on the cooling liquid filtering and conveying belt 21 as much as possible, a material scraping plate 6, a brush 7 and an air blowing pipe 8 are arranged at the lower side of the cooling liquid filtering and conveying belt 21 in the slag recovery box 4; the scraping plate 6, the brush 7 and the blowing pipe 8 are sequentially arranged from the direction far away from the cooling liquid recovery box 3 to the direction close to the cooling liquid recovery box 3. One end of the scraping plate 6 close to the cooling liquid filtering and conveying belt 21 is abutted to the cooling liquid filtering and conveying belt 21, the end of the brush 7 is abutted to the cooling liquid filtering and conveying belt 21, and the air outlet of the air blowing pipe 8 faces the cooling liquid filtering and conveying belt 21.
The scraper plate 6 is used for cleaning the cooling liquid filtering and conveying belt 21 for the first time, the material slag is removed, the hairbrush 7 is used for cleaning the cooling liquid filtering and conveying belt 21 for the second time, the cooling liquid filtering and conveying belt 21 is further cleaned, and finally the cooling liquid filtering and conveying belt 21 is cleaned for the third time through the air blowing pipe 8; the cooling liquid filtering and conveying belt 21 does not bring the slag into the cooling liquid recovery box 3 as much as possible, and the influence of the slag on the recycling of the cooling liquid is avoided as much as possible.
In order to monitor the amount of the cooling liquid in the cooling liquid recovery tank 3, a liquid level observation window 31 is embedded in the side wall of the cooling liquid recovery tank 3, and the liquid level observation window 31 can be made of transparent glass, so that the amount of the cooling liquid in the cooling liquid recovery tank 3 can be conveniently observed and timely adjusted. In order to better circulate the cooling liquid, a water pump 32 is arranged at one end of the cooling liquid spray pipe 5, which is positioned in the cooling liquid recovery box 3, the cooling liquid is continuously input into the cooling liquid spray pipe 5 by the water pump 32, so that the cooling liquid is sprayed by the hobbing cutter 9 of the hobbing machine with the cooling liquid spray pipe 5, and the cooling liquid is recycled.
In order to take out the slag from the slag recovery box 4 conveniently, one side of the slag recovery box 4, which is far away from the cooling liquid recovery box 3, is provided with a discharge plate 41, the discharge plate 41 is hinged to the side wall of the slag recovery box 4 along the upper side in the vertical direction, an active magnet 42 is embedded in the lower side of the discharge plate 41, a passive magnet 43 is embedded in the side wall of the slag recovery box 4 at the position corresponding to the active magnet 42, and the polarity of the active magnet 42 is opposite to that of the passive magnet 43. The driving magnet 42 and the driven magnet 43 of the discharging plate 41 are adsorbed, so that the discharging plate 41 seals the material slag recovery box 4; the discharging plate 41 is rotated, the material slag recycling box 4 is opened, and the material slag can be taken out, so that the material slag is convenient to take out.
The implementation principle of the coolant recycling device of the gear hobbing machine in the embodiment of the application is as follows:
in the first step, cooling liquid and slag are collected, the cooling liquid is sprayed to a hob 9 and a workpiece 91 of the gear hobbing machine by a cooling liquid spray pipe 5, and the slag generated by processing falls into a cooling liquid collection hopper 1 along with the cooling liquid.
Secondly, separating the cooling liquid from the material residues, wherein the cooling liquid and the material residues fall onto the liquid-residue separation component 2, the cooling liquid enters the cooling liquid recovery box 3 through the cooling liquid filter conveyor belt 21, and the water pressing section 222 of the cooling liquid filter-press conveyor belt 22 and the cooling liquid filter conveyor belt 21 extrude the cooling liquid and the material residues, so that the cooling liquid can more easily enter the cooling liquid recovery box 3 through the cooling liquid filter conveyor belt 21; the coolant filter conveyor 21 moves to recover the slag into the slag recovery tank 4.
And thirdly, the cooling liquid is recycled, the cooling liquid is continuously input into the cooling liquid spray pipe 5 by the water pump 32, the cooling liquid is sprayed by the hobbing cutter 9 of the hobbing machine of the cooling liquid spray pipe 5, the cooling liquid is recycled, and waste is reduced.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a gear hobbing machine coolant liquid cyclic utilization device which characterized in that: the device comprises a cooling liquid collecting hopper (1) arranged on the lower side of a hobbing cutter (9) of the gear hobbing machine, a liquid-slag separating component (2) arranged on the lower side of the cooling liquid collecting hopper (1), a cooling liquid recovery box (3) arranged on the lower side of the liquid-slag separating component (2) and a cooling liquid spray pipe (5) used for guiding cooling liquid in the cooling liquid recovery box (3) to the hobbing cutter (9); the liquid-slag separation component (2) comprises a cooling liquid filtering conveyor belt (21), the cooling liquid filtering conveyor belt (21) is made of a water-permeable material, a slag recovery box (4) is arranged at one end of the cooling liquid filtering conveyor belt (21), and the slag recovery box (4) is positioned on one side of the cooling liquid recovery box (3); one end of the cooling liquid spray pipe (5) is communicated with the cooling liquid recovery box (3), and the other end of the cooling liquid spray pipe faces to a hob (9) of the gear hobbing machine.
2. The gear hobbing machine coolant recycling device of claim 1, characterized in that: a liquid level observation window (31) is arranged on one side wall of the cooling liquid recovery box (3), and the liquid level observation window (31) is arranged in a transparent mode.
3. The gear hobbing machine coolant recycling device of claim 1, characterized in that: the cooling liquid filters the upside of conveyer belt (21) and is equipped with cooling liquid filter-pressing conveyer belt (22), cooling liquid filter-pressing conveyer belt (22) are located cooling liquid and collect one side that fill (1) is close to material sediment collection box (4).
4. The gear hobbing machine coolant recycling device of claim 3, characterized in that: the cooling hydraulic filter conveyor belt (22) comprises a guide section (221) and a water pressing section (222), the guide section (221) and the cooling liquid filter conveyor belt (21) are arranged at an angle, a guide cavity (223) is formed between the guide section (221) and the cooling liquid filter section, and the cross-sectional area of the guide cavity (223) is gradually reduced from the position far away from the water pressing section (222) to the position close to one side of the water pressing section (222).
5. The gear hobbing machine coolant recycling device of claim 4, characterized in that: and a scraping plate (6) is arranged at the lower side of one end of the cooling liquid filtering conveyor belt (21) in the material residue recovery box (4), and the scraping plate (6) is abutted to the cooling liquid filtering conveyor belt (21).
6. The gear hobbing machine coolant recycling device of claim 5, characterized in that: and one side of the scraping plate (6) close to the cooling liquid recovery box (3) is provided with a brush (7), the brush (7) is positioned in the slag recovery box (4), and the brush (7) is abutted against the cooling liquid filtering and conveying belt (21).
7. The gear hobbing machine coolant recycling device of claim 6, characterized in that: and one side of the brush (7) far away from the scraper plate (6) is provided with an air blowing pipe (8), and the air blowing pipe (8) faces the cooling liquid filtering and conveying belt (21).
8. The gear hobbing machine coolant recycling device of claim 1, characterized in that: one side of the material slag recycling box (4) far away from the cooling liquid filtering conveyor belt (21) is provided with a material discharging plate (41), one end of the material discharging plate (41) is hinged to the material slag recycling box (4), and the other end of the material slag recycling box (4) is fixedly connected with the material slag recycling box in an openable mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023348121.5U CN214109093U (en) | 2020-12-31 | 2020-12-31 | Gear hobbing machine coolant liquid cyclic utilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023348121.5U CN214109093U (en) | 2020-12-31 | 2020-12-31 | Gear hobbing machine coolant liquid cyclic utilization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214109093U true CN214109093U (en) | 2021-09-03 |
Family
ID=77493306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023348121.5U Active CN214109093U (en) | 2020-12-31 | 2020-12-31 | Gear hobbing machine coolant liquid cyclic utilization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214109093U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116460372A (en) * | 2023-06-19 | 2023-07-21 | 莱芜泰山煤矿机械有限公司 | Cooling structure for gear hobbing machine |
-
2020
- 2020-12-31 CN CN202023348121.5U patent/CN214109093U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116460372A (en) * | 2023-06-19 | 2023-07-21 | 莱芜泰山煤矿机械有限公司 | Cooling structure for gear hobbing machine |
| CN116460372B (en) * | 2023-06-19 | 2023-09-05 | 莱芜泰山煤矿机械有限公司 | Cooling structure for gear hobbing machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110977598B (en) | Utilize numerical control lathe chip removal device of conveyer belt principle | |
| CN210995264U (en) | Chemical waste residue filtering and cleaning device | |
| CN214109093U (en) | Gear hobbing machine coolant liquid cyclic utilization device | |
| CN105597392A (en) | Wastewater pool for cleaning solid impurity in industrial wastewater | |
| CN114275942A (en) | Building site effluent treatment plant | |
| CN212762437U (en) | Waste treatment device for machining of numerical control lathe | |
| CN219973334U (en) | Channel dredging device | |
| CN210046380U (en) | Planetary pipe cutting machine clout recovery unit | |
| CN112872888A (en) | Chip removal filtration system and quick change type filter screen plate structure of digit control machine tool | |
| CN114272675B (en) | Oil liquid filtering system with magnetic filter and filtering method thereof | |
| CN213194794U (en) | Waste residue cleaning equipment for mechanical cutting fluid | |
| CN214233098U (en) | Chip removal filtration system and quick-change filter screen plate structure of lathe | |
| CN112718678B (en) | Waste iron slag cleaning device for internally forming ant nest | |
| CN213349626U (en) | Waste cleaning mechanism for accessory manufacturing automation equipment | |
| CN213438604U (en) | Cutting fluid recovery unit for engine lathe | |
| CN211310943U (en) | Kitchen oil-water separation device and kitchen waste treatment system | |
| CN212633824U (en) | U type material loading spiral preliminary treatment all-in-one | |
| CN210910755U (en) | Rotary picking cage of solid-liquid separator | |
| CN215788500U (en) | Chip removal machine | |
| CN219251831U (en) | Cutting fluid recovery unit with solid-liquid separation effect | |
| CN216935140U (en) | Chip removing mechanism of numerical control lathe for processing metallurgical products | |
| CN218225797U (en) | Vertical turning and grinding combined numerical control lathe for valve | |
| CN217836566U (en) | Emulsion storage tank convenient to clearance | |
| CN217857738U (en) | Cleaning device convenient for waste liquid collection for polyester chip preparation | |
| CN218639192U (en) | Digit control machine tool with piece prevents protection architecture that splashes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |