CN224147129U - A flipping mechanism for a mobile phone back cover bonding device - Google Patents
A flipping mechanism for a mobile phone back cover bonding deviceInfo
- Publication number
- CN224147129U CN224147129U CN202521023762.3U CN202521023762U CN224147129U CN 224147129 U CN224147129 U CN 224147129U CN 202521023762 U CN202521023762 U CN 202521023762U CN 224147129 U CN224147129 U CN 224147129U
- Authority
- CN
- China
- Prior art keywords
- mobile phone
- rear cover
- unit
- phone rear
- clamping
- 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
Landscapes
- Telephone Set Structure (AREA)
Abstract
本实用新型公开了一种用于手机后盖贴合设备的翻转机构,涉及自动化设备技术领域，包括架体，所述架体的顶面竖立设有用于放置手机后盖的放置工位，放置工位的中部设有前后贯通的移动空间，移动空间的下方设有滑动机构，滑动机构的顶面竖立设有可前后移动并能向放置工位输送手机后盖的输送单元，放置工位的一侧设有立架，立架面向放置工位的一面固定设有直线驱动单元，直线驱动单元的输出端固定连接有夹持单元，夹持单元相向的一面对称设有用于夹起或放下手机后盖的夹紧单元，且任意一夹紧单元还连接有动力输入单元及用于与动力输入单元传动连接的驱动组件。本实用新型能够实现手机后盖翻转的全自动化操作，无需人工干预，显著提高了生产效率。
This utility model discloses a flipping mechanism for a mobile phone back cover bonding device, relating to the field of automation equipment technology. It includes a frame, with a placement station for placing mobile phone back covers erected on the top surface of the frame. A through-flowing moving space is provided in the middle of the placement station, and a sliding mechanism is located below the moving space. A conveying unit, movable forward and backward and capable of conveying mobile phone back covers to the placement station, is erected on the top surface of the sliding mechanism. A stand is provided on one side of the placement station, and a linear drive unit is fixedly mounted on the side of the stand facing the placement station. A clamping unit is fixedly connected to the output end of the linear drive unit. Symmetrically arranged clamping units for lifting or lowering the mobile phone back covers are provided on the opposite side of the clamping units. Each clamping unit is also connected to a power input unit and a drive assembly for transmission connection with the power input unit. This utility model enables fully automated operation of flipping mobile phone back covers without manual intervention, significantly improving production efficiency.
Description
Technical Field
The utility model relates to the technical field of automatic equipment, in particular to a turnover mechanism for a mobile phone rear cover attaching device.
Background
In the production process of modern smart phones, the rear cover of the mobile phone is taken as an important component of the shell, bears multiple tasks of protecting internal elements, improving appearance design, providing signal functions and the like, and along with the continuous progress of smart phone technology, the design of the rear cover of the mobile phone gradually tends to be diversified, different materials (such as glass, metal, plastic and the like) are used, and the attractiveness and durability of the rear cover of the mobile phone are continuously improved, so that the dual requirements of consumers on appearance and performance are met.
The existing production process of the mobile phone rear cover generally comprises a plurality of links, wherein the fitting and pressurizing process is one of key steps in the production process. In order to ensure the bonding quality of the mobile phone rear cover, it is generally necessary to treat the a-side and the B-side of the mobile phone rear cover separately. Specifically, the surface of the rear cover of the mobile phone is usually subjected to surface treatment, such as spraying, printing or coating, while the surface of the rear cover of the mobile phone is required to be subjected to finer processing and assembly, and the surface of the rear cover of the mobile phone is required to face the pressurizing device when the attaching and pressurizing are performed, and the surface of the rear cover of the mobile phone is in contact with other components, so that the rear cover of the mobile phone must be turned from the surface of the rear cover of the mobile phone to the surface of the rear cover of the mobile phone before the attaching and pressurizing process is performed, so that the pressurizing process is completed.
However, in the prior art, this overturning process usually relies on manual operation, and a worker needs to manually overturn the mobile phone rear cover from the a face to the B face, and accurately place the mobile phone rear cover on a corresponding workbench or equipment for further processing. The overturning mode has obvious defects in actual processing, and firstly, the efficiency of manual overturning is low, particularly in the large-scale production process, the frequent operation of an overturning link can cause the limitation of the whole speed of a production line, so that the production period is influenced. Secondly, the operation errors are easy to be caused by depending on manual overturning for a long time, especially under the condition that the rear cover of the mobile phone is usually thinner and the surface is smooth, misoperation can occur in the manual overturning process, such as the problem that the rear cover of the mobile phone is inclined, falls off or overturns in place, and further the production quality is reduced, and the production efficiency is further influenced.
In view of the above, the present inventors have conducted intensive studies on the above problems, and have made the present invention.
Disclosure of utility model
The utility model provides a turnover mechanism for a mobile phone rear cover attaching device, and aims to solve the problems that in the prior art, the efficiency of manually turning over a mobile phone rear cover is low, the operation risk is high and the turnover error is easy to occur.
In order to solve the technical problems, the utility model adopts the following technical scheme:
A turnover mechanism for a mobile phone rear cover attaching device comprises a frame body, wherein the length direction of the frame body is the left-right direction, a placing station for placing a mobile phone rear cover is vertically arranged on the top surface of the frame body, a moving space which is penetrated front and back is arranged in the middle of the placing station, a sliding mechanism which is horizontally arranged along the front-back direction is arranged below the moving space, a conveying unit which can move front and back and can convey the mobile phone rear cover to the placing station is vertically arranged on the top surface of the sliding mechanism, a vertical frame is vertically arranged on one side of the placing station, a straight line driving unit which is vertically arranged is fixedly arranged on one surface of the vertical frame facing the placing station, a clamping unit which is used for opening or closing is fixedly connected with the output end of the straight line driving unit, clamping units which are symmetrically arranged on opposite surfaces of the clamping units are used for clamping or putting down the rear cover of the mobile phone, and any clamping unit is also connected with a power input unit and a driving assembly which is in transmission connection with the power input unit.
Further, the above-mentioned station of placing includes two risers of erectting the setting, and the top surface of two above-mentioned risers all is equipped with places the board, and the top surface of every above-mentioned board of placing all is protruding to be equipped with a plurality of stopping pieces that are used for restricting lid behind the cell-phone, and two above-mentioned boards of placing all concave the groove of stepping down that is used for holding above-mentioned clamping unit that is away from in one side that deviates from mutually, and has the interval that conveying unit passed through between two above-mentioned boards of placing.
Further, the sliding mechanism comprises two installation seats arranged at intervals, a screw rod arranged between the two installation seats in a horizontal mode along the front-back direction, a sliding seat arranged on the screw rod and a first motor for driving the screw rod to rotate, and the conveying unit is arranged on the top surface of the sliding seat.
Further, the conveying unit comprises a first air cylinder which is vertically arranged, a mounting plate which is horizontally arranged along the front-back direction is fixedly arranged at the output end of the first air cylinder, at least one vertically arranged positioning column is arranged on the top surface of the mounting plate, and a positioning sheet for placing a mobile phone rear cover is fixedly arranged at the top end of the positioning column.
Further, the linear driving unit is a second cylinder, a bending plate with an L-shaped shape is fixedly arranged at the output end of the second cylinder, and the clamping unit is fixedly arranged on the bottom surface of the bending plate.
Further, the clamping unit comprises a fixing plate horizontally arranged along the left-right direction, a bidirectional air cylinder is fixedly installed on the bottom surface of the fixing plate, vertical plates vertically arranged are fixedly connected to two output ends of the bidirectional air cylinder, and the clamping unit is arranged on one face of each vertical plate opposite to the other face of each vertical plate.
Further, the clamping unit comprises a rotating shaft arranged on one surface of the two vertical plates opposite to each other and a rotating seat arranged on the rotating shaft, rotatable rotating blocks are arranged on one surface of the two rotating seats opposite to each other, and at least two clamping grooves which are arranged at intervals are concavely arranged on the outer side surface of each rotating block.
Further, any one of the rotating shafts penetrates out of the vertical plate outwards and is provided with a driven synchronous pulley, the driving unit comprises a second motor fixedly arranged on the outer side face of the vertical plate, a driving synchronous pulley fixedly arranged at the output end of the second motor and a synchronous belt used for enabling the driving synchronous pulley to be in transmission connection with the driven synchronous pulley, and the driven synchronous pulley is the power input unit.
Further, a tensioning wheel for adjusting the tension of the synchronous belt is arranged on the outer side of the vertical plate.
From the above description of the structure of the present utility model, the present utility model has the following advantages:
According to the utility model, a series of automatic assemblies are arranged on the frame body, and the automatic assembly comprises the sliding mechanism for driving the conveying unit to move back and forth at the placing station, the conveying unit for placing the mobile phone rear cover at the placing station, the linear driving mechanism, the clamping unit for cooperatively clamping or loosening the mobile phone rear cover, the clamping unit and the driving assembly for driving the clamping unit to rotate, so that when the automatic mobile phone rear cover overturning device is applied, the clamping unit and the clamping unit can be driven by the linear driving unit to cooperatively work, the mobile phone rear cover can be accurately clamped and fixed, overturning operation is completed, the whole overturning process is fully automated, manual intervention is not needed, the production efficiency is remarkably improved, and the risk of manual operation errors is effectively reduced.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is an enlarged schematic view of a structure of one side of the clamping unit of the present utility model.
Fig. 3 is a schematic structural view of the placement station of the present utility model without a rear cover of the mobile phone.
Fig. 4 is a schematic structural view of the placement station of the present utility model when the mobile phone rear cover is placed.
Fig. 5 is a top view of the placement station of the present utility model.
Fig. 6 is a schematic structural view of the driving assembly of the present utility model.
Fig. 7 is a schematic structural view of the clamping unit of the present utility model.
The device comprises the following components of 10-frame bodies, 11-vertical frames, 12-sliding rails, 20-placing stations, 21-moving space, 22-vertical plates, 23-placing plates, 24-stop blocks, 25-yielding grooves, 31-installation seats, 32-screw rods, 33-sliding seats, 331-sliding blocks, 34-first motors, 41-first cylinders, 42-installation plates, 43-positioning columns, 44-positioning plates, 50-linear driving units, 51-second cylinders, 52-bending plates, 521-vertical parts, 522-transverse parts, 60-clamping units, 61-fixing plates, 62-bidirectional cylinders, 63-vertical plates, 70-clamping units, 71-driven synchronous pulleys, 72-rotating shafts, 73-rotating seats, 74-rotating blocks, 741-clamping grooves, 81-second motors, 82-driving synchronous pulleys, 83-synchronous belts and 90-tensioning wheels.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown.
Referring to fig. 1 to 5, a turnover mechanism for a mobile phone back cover attaching device includes a frame body 10, a placing station 20 for placing a mobile phone back cover is vertically arranged on the top surface of the frame body 10 in a left-right direction by taking the length direction of the frame body 10 as a left-right direction, a moving space 21 is provided in the middle of the placing station 20, a sliding mechanism horizontally arranged along the front-back direction is provided below the moving space 21, a conveying unit capable of moving back and forth and conveying the mobile phone back cover of a loading station (not shown in the figure) to the placing station 20 is vertically arranged on the top surface of the sliding mechanism, a stand 11 is vertically arranged on one side of the placing station 20, a straight line driving unit 50 vertically arranged is fixedly arranged on one side of the stand 11 facing the placing station, a clamping unit 60 for opening or closing is fixedly connected to the output end of the straight line driving unit 50, a clamping unit 70 for clamping or dropping the mobile phone back cover is symmetrically arranged on the opposite side of the clamping unit 60, and any clamping unit 70 is also connected with a power input unit and a driving component for driving the power input unit to be in a transmission connection so as to drive the clamping unit 70 to rotate.
When the mobile phone back cover overturning device is applied, the sliding mechanism can drive the conveying unit to move back and forth so as to convey the mobile phone back cover into the placing station 20, then the linear driving unit 50 drives the clamping unit 60 to work cooperatively with the clamping unit 70, the mobile phone back cover is accurately clamped and fixed, then the driving assembly drives the clamping unit 60 to finish overturning operation, the whole overturning process is fully automatic, manual intervention is not needed, the production efficiency is remarkably improved, and the risk of manual operation errors is effectively reduced.
Referring to fig. 1 to 5, the placement station 20 includes two upright standing plates 22, the top surfaces of the two standing plates 22 are respectively provided with a placement plate 23, the top surface of each placement plate 23 is respectively provided with a plurality of stop blocks 24 for limiting the mobile phone rear cover in a protruding manner, the stop blocks 24 jointly form a limiting space for limiting the mobile phone rear cover to move, one sides, facing away from each other, of the two placement plates 23 are respectively provided with a recess 25 for accommodating the clamping unit 70, and a space for passing through a conveying unit is arranged between the two placement plates 23.
Referring to fig. 1 to 5, the sliding mechanism includes two mounting seats 31 arranged at intervals, a screw rod 32 arranged horizontally between the two mounting seats 31 in the front-rear direction, a sliding seat 33 provided on the screw rod 32, and a first motor 34 for driving the screw rod 32 to rotate, in this embodiment, the first motor 34 is connected with the screw rod 32 through a coupling (not shown in the drawings), both ends of the screw rod 32 are provided with slide rails 12 arranged horizontally in the front-rear direction, and the bottom surface of the sliding seat 33 is provided with a slider 331 in sliding fit with the slide rails 12. When the mobile phone rear cover conveying device is applied, the first motor 34 drives the screw rod 32 to rotate so as to drive the sliding seat 33 to move forwards and backwards, and then conveying of the mobile phone rear cover is achieved.
Referring to fig. 1 to 5, the conveying unit includes a first cylinder 41 vertically disposed, a mounting plate 42 horizontally disposed in a front-rear direction is fixedly mounted at an output end of the first cylinder 41, at least one vertically disposed positioning column 43 is provided at a top surface of the mounting plate 42, a positioning piece 44 for placing a rear cover of a mobile phone is fixedly mounted at a top end of the positioning column 43, the positioning piece 44 may be any one of a circular shape, a rectangular shape, a triangular shape or a polygonal shape, in this embodiment, the positioning piece 44 is preferably a circular shape, and the positioning piece 44 is located at a center position of the rear cover of the mobile phone when the rear cover of the mobile phone is placed on the positioning piece 44. When the mobile phone rear cover positioning device is applied, the conveying unit moves towards the placing station 20, the first air cylinder 41 drives the positioning sheet 44 and the mobile phone rear cover on the positioning sheet 44 to move upwards through the jacking action, the positioning sheet 44 is higher than the placing plate 23, after the conveying unit arrives at the placing station 20, the first air cylinder 41 retracts, the positioning sheet 44 moves downwards along with the positioning sheet, until the mobile phone rear cover placed on the positioning sheet 44 falls into the limiting space on the placing plate 23, and the mobile phone rear cover is ensured to be accurately placed at a preset position.
Referring to fig. 1 to 5, the linear driving unit 50 is a second cylinder 51, an L-shaped bending plate 52 is fixedly mounted at the output end of the second cylinder 51, the bending plate 52 includes a vertical portion 521 and a horizontal portion 522 connected to the bottom of the vertical portion 521, the output end of the second cylinder 51 is fixedly connected to the horizontal portion 522, the bottom surface of the bending plate 52 is fixedly provided with a clamping unit 60, the clamping unit 60 includes a fixing plate 61 horizontally arranged along the left-right direction, the bottom surface of the fixing plate 61 is fixedly provided with a bidirectional cylinder 62, two output ends of the bidirectional cylinder 62 are fixedly connected with vertical plates 63 vertically arranged, one opposite surfaces of the two vertical plates 63 are provided with clamping units 70, and when the linear driving unit is used, the clamping unit 60 can be driven to move up and down by driving of the second cylinder 51 to adjust the position of the clamping unit 60, and further adjustment of clamping force of the two vertical plates 63 is realized by driving of the bidirectional cylinder 62, so that efficient and stable grabbing and releasing are realized.
Referring to fig. 1 to 7, the clamping unit 70 includes a rotating shaft 72 disposed on one surface of two risers 63 opposite to each other, and a rotating seat 73 mounted on the rotating shaft 72, bearings (not shown in the drawing) are disposed in the rotating seats 73, rotatable rotating blocks 74 are disposed on one surface of the two rotating seats 73 opposite to each other, the rotating blocks 74 may be round, diamond or rectangular, in this embodiment, the rotating blocks 74 are preferably diamond-shaped, at least two clamping grooves 741 disposed at intervals are concavely disposed on an outer surface of each rotating block 74, the clamping grooves 741 are used for clamping in a rear cover of a mobile phone, the driving unit includes a second motor 81 fixedly disposed on an outer surface of the risers 63, a driving synchronous pulley 82 fixedly mounted on an output end of the second motor 81, and a synchronous belt 83 for driving the driving synchronous pulley 82 to be in transmission connection with the driven synchronous pulley 71, and a tensioning wheel 90 for adjusting tension of the synchronous belt 83 is disposed on an outer surface of the risers 63, and when the clamping unit 60 drives the clamping unit 70 to clamp the rear cover of the mobile phone, and then drives the driving synchronous pulley 82 through the second motor 81 to drive the driving synchronous pulley 83 to rotate the synchronous pulley 71, thereby realizing a rotation of the driving synchronous pulley and a turnover operation of the rear cover of the mobile phone.
The foregoing is merely illustrative of specific embodiments of the present utility model, but the design concept of the present utility model is not limited thereto, and any insubstantial modification of the present utility model by using the design concept shall fall within the scope of the present utility model.
Claims (9)
1. The turnover mechanism for the mobile phone rear cover attaching equipment is characterized by comprising a frame body, wherein the length direction of the frame body is taken as the left-right direction, a placing station for placing a mobile phone rear cover is vertically arranged on the top surface of the frame body, a moving space which is penetrated from front to back is arranged in the middle of the placing station, a sliding mechanism which is horizontally arranged along the front-back direction is arranged below the moving space, a conveying unit which can move back and forth and can convey the mobile phone rear cover to the placing station is vertically arranged on the top surface of the sliding mechanism, a vertical frame is vertically arranged on one side of the placing station, a straight line driving unit which is vertically arranged is fixedly arranged on one surface of the vertical frame facing the placing station, a clamping unit for opening or closing is fixedly connected to the output end of the straight line driving unit, clamping units for clamping up or down the mobile phone rear cover are symmetrically arranged on the opposite surfaces of the clamping units, and a power input unit and a driving assembly which is in transmission connection with the power input unit are also connected to any clamping unit.
2. The turnover mechanism for the mobile phone rear cover attaching equipment according to claim 1, wherein the placing station comprises two vertical plates which are vertically arranged, the top surfaces of the two vertical plates are respectively provided with a placing plate, the top surface of each placing plate is convexly provided with a plurality of stop blocks for limiting the mobile phone rear cover, one side, facing away from each other, of each placing plate is concavely provided with a yielding groove for accommodating the clamping unit, and a space for passing through a conveying unit is reserved between the two placing plates.
3. The turnover mechanism for the mobile phone rear cover attaching equipment according to claim 1, wherein the sliding mechanism comprises two mounting seats arranged at intervals, a screw rod arranged between the two mounting seats in a horizontal mode along the front-rear direction, a sliding seat arranged on the screw rod and a first motor for driving the screw rod to rotate, and the conveying unit is arranged on the top surface of the sliding seat.
4. The turnover mechanism for a mobile phone rear cover attaching device according to any one of claims 1 to 3, wherein the conveying unit comprises a first cylinder which is vertically arranged, an installing plate which is horizontally arranged along the front-back direction is fixedly arranged at the output end of the first cylinder, at least one vertically arranged positioning column is arranged on the top surface of the installing plate, and a positioning sheet for placing a mobile phone rear cover is fixedly arranged at the top end of the positioning column.
5. The turnover mechanism for the mobile phone rear cover attaching equipment according to claim 1, wherein the linear driving unit is a second cylinder, a bending plate with an L-shaped shape is fixedly arranged at the output end of the second cylinder, and the clamping unit is fixedly arranged on the bottom surface of the bending plate.
6. The turnover mechanism for the mobile phone rear cover attaching equipment according to claim 1, wherein the clamping unit comprises a fixing plate horizontally arranged along the left-right direction, a bidirectional air cylinder is fixedly arranged on the bottom surface of the fixing plate, two output ends of the bidirectional air cylinder are fixedly connected with vertical plates vertically arranged, and the clamping unit is arranged on one surface of each vertical plate opposite to the other surface of each vertical plate.
7. The turnover mechanism for a mobile phone rear cover attaching device according to claim 6, wherein the clamping unit comprises a rotating shaft arranged on one surface of the two vertical plates opposite to each other and a rotating seat arranged on the rotating shaft, rotatable rotating blocks are arranged on one surface of the two rotating seats opposite to each other, and at least two clamping grooves which are arranged at intervals are concavely arranged on the outer side surface of each rotating block.
8. The turnover mechanism for the mobile phone rear cover attaching equipment according to claim 7, wherein any one of the rotating shafts penetrates out of the vertical plate outwards and is provided with a driven synchronous pulley, the driving unit comprises a second motor fixedly arranged on the outer side surface of the vertical plate, a driving synchronous pulley fixedly arranged at the output end of the second motor and a synchronous belt used for enabling the driving synchronous pulley to be in transmission connection with the driven synchronous pulley, and the driven synchronous pulley is the power input unit.
9. The turnover mechanism for a mobile phone rear cover attaching device according to claim 8, wherein a tensioning wheel for adjusting the tension of the synchronous belt is further arranged on the outer side of the vertical plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202521023762.3U CN224147129U (en) | 2025-05-22 | 2025-05-22 | A flipping mechanism for a mobile phone back cover bonding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202521023762.3U CN224147129U (en) | 2025-05-22 | 2025-05-22 | A flipping mechanism for a mobile phone back cover bonding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN224147129U true CN224147129U (en) | 2026-04-21 |
Family
ID=99469197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202521023762.3U Active CN224147129U (en) | 2025-05-22 | 2025-05-22 | A flipping mechanism for a mobile phone back cover bonding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN224147129U (en) |
-
2025
- 2025-05-22 CN CN202521023762.3U patent/CN224147129U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN117181918A (en) | A quick mold changing device for a closed double-point press and its mold changing method | |
| CN217228913U (en) | Numerical control full-automatic door and window storage equipment | |
| CN118032370A (en) | Automobile chassis part detection device | |
| CN213103917U (en) | Hydraulic plate bending machine | |
| CN221337229U (en) | Automatic clamping welding fixture | |
| CN219880976U (en) | Steel ring warpage trimmer | |
| CN220161620U (en) | Automobile part trial-manufacturing shared welding fixture | |
| CN218283376U (en) | Cutting device is used in production of corrosion-resistant various steel sheet | |
| CN217347232U (en) | Multi-angle automatic turnover mechanism | |
| CN107350922B (en) | Middle riding wheel structure of horizontal glass double-sided edging machine | |
| CN114378578B (en) | Type-C kludge | |
| CN215879984U (en) | Feeding device for rapid punching of bearing seat | |
| CN221247643U (en) | Energy storage battery module extrusion steel band equipment | |
| CN213615122U (en) | Rolling machine | |
| CN222627049U (en) | A positioning and turning device for processing turntable bearings | |
| CN210709145U (en) | Press from both sides bottle transfer chain | |
| CN211495732U (en) | Double-assembly-line mechanism and transfer device | |
| CN216181013U (en) | Automatic to pressing from both sides type pipe cutting machine material loading supporting mechanism | |
| CN116177164B (en) | An L-shaped 90-degree tilting machine | |
| CN220902303U (en) | Welding device for aluminum nitride copper-clad substrate and chip | |
| CN223284518U (en) | Surface bead frosting golden line equipment | |
| CN224059176U (en) | Busbar punching, shearing and bending integrated machine | |
| CN223419367U (en) | A multi-station rotary fixture | |
| CN224043631U (en) | Windshield positioning mechanism | |
| CN217088538U (en) | Mounting fixture for surface mounting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |