CN212600968U - Height-adjustable's broad width abrasive band aircraft nose - Google Patents
Height-adjustable's broad width abrasive band aircraft nose Download PDFInfo
- Publication number
- CN212600968U CN212600968U CN202020559743.3U CN202020559743U CN212600968U CN 212600968 U CN212600968 U CN 212600968U CN 202020559743 U CN202020559743 U CN 202020559743U CN 212600968 U CN212600968 U CN 212600968U
- Authority
- CN
- China
- Prior art keywords
- driving wheel
- swing
- seat
- driven wheel
- fixed seat
- 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
Landscapes
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model relates to a height-adjustable wide abrasive belt machine head, belonging to the technical field of machining; the device comprises a fixed seat, a driving wheel set, a driven wheel beam seat, a driven wheel, a swinging mechanism and an abrasive belt, wherein the driven wheel beam seat is arranged above the fixed seat; the driving wheel set comprises a driving wheel, a driving wheel mounting seat, a driving wheel swinging connecting rod and a driving wheel swinging driving device connected with the driving wheel swinging connecting rod through an eccentric shaft, and the driving wheel swinging driving device comprises a self-locking speed reducer and a hand wheel; the driven wheel beam seat is vertically lifted and rotationally connected with the fixed seat, and the driven wheel beam can be driven by the swing mechanism to swing in a reciprocating manner; the utility model provides a height-adjustable's wide width abrasive band aircraft nose can adjust the abrasive band height of polishing, can satisfy the demand of multiple product and the different processes of different shape size to the height of polishing, promotes the efficiency of polishing and the quality of polishing.
Description
Technical Field
The utility model relates to a height-adjustable's broad width abrasive band aircraft nose belongs to machining technical field.
Background
In the existing abrasive belt mechanism, a driving wheel of a machine head below the existing abrasive belt mechanism is fixed, but for the front and rear processes of a plurality of abrasive heads, the thicknesses of the abrasive belts are inconsistent, and the thicknesses are different mainly due to the mesh number of the abrasive belts, so that the heights of products contacted between the driving wheels of the machine heads in different processes are inconsistent; the polishing heights of products with different height shapes are different, so that the polishing requirements of various products and multiple processes are difficult to meet by the conventional fixed abrasive belt machine head, and the polishing effect and quality are easily influenced to cause adverse consequences.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome not enough among the prior art, provide a height-adjustable's wide width abrasive band aircraft nose can adjust the abrasive band height of polishing, satisfies the demand of multiple product and the different processes of different shapes size to the height of polishing, promotes the efficiency of polishing and the quality of polishing.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a height-adjustable wide abrasive belt machine head comprises a fixed seat, a driving wheel set, a driven wheel beam seat, a driven wheel, a swing mechanism and an abrasive belt, wherein the driving wheel set is arranged at the lower end of the fixed seat and is in rotary adjustable connection with the fixed seat; the driven wheel beam seat is vertically lifted and rotationally connected with the fixed seat, and can be driven by the swing mechanism to swing back and forth;
the driving wheel set comprises a driving wheel, driving wheel mounting seats, driving wheel swing connecting rods and a driving wheel swing driving device, the driving wheel mounting seats are arranged at two ends of the driving wheel and are rotatably connected with the fixing seats, the driving wheel swing driving device is rotatably connected with the driving wheel mounting seats, the driving wheel swing driving device is connected with the driving wheel swing connecting rods through eccentric shafts, the driving wheel swing driving device comprises a self-locking speed reducer and a hand wheel, the input end of the self-locking speed reducer is connected with the hand wheel, one end of each eccentric shaft is fixedly connected with the output end.
Furthermore, the driving wheel mounting seats on two sides of the driving wheel are rotatably connected with the fixing seat through fixed connecting rods, the two driving wheel swinging connecting rods are rotatably connected with the driving wheel mounting seats through movable connecting rods, and the output ends of the two eccentric shafts are respectively and fixedly connected with eccentric shaft connecting rods arranged between the output ends of the two eccentric shafts through couplers.
Furthermore, a tightness adjusting cylinder is arranged between the driven wheel beam seat and the fixed seat, and the tightness adjusting cylinder can drive the driven wheel beam seat to vertically lift so as to tension or loosen the abrasive belt.
Furthermore, the swing mechanism comprises a swing rod vertically arranged below one side of the driven wheel beam seat, a swing head correspondingly arranged below the swing rod and clamping the swing rod in the swing head, and a swing cylinder correspondingly arranged on the fixed seat and used for driving the swing head to rotate in a reciprocating manner, wherein a radial swing guide chute is arranged on the swing head; the swing rod is clamped in the swing guide sliding groove, and when the swing cylinder drives the swing head to swing, the swing rod can slide along the swing guide sliding groove.
Furthermore, the two ends of the driving wheel are rotatably connected with the driving wheel mounting seat through belt seat bearings, and the two ends of the driven wheel are rotatably connected with the driven wheel beam seat through belt seat bearings.
Furthermore, travel switches are respectively arranged on the two outer sides of the abrasive belt on the fixed seat, and the travel switches can control the stop and rotation of the driving wheel.
Furthermore, photoelectric correlation switches are respectively arranged on the fixed seat on one side of the abrasive belt and can control the stop and rotation of the driving wheel.
Furthermore, one side of the fixed seat is adjustably connected with the machine table through a locking screw, and a rotating handle is arranged at the top of the screw.
Furthermore, a deep groove ball bearing is arranged in the bearing with the seat.
Compared with the prior art, the utility model discloses the beneficial effect who reaches:
1. according to the technical scheme, the driving wheel set is rotatably connected with the fixed seat, the height is adjustable, the requirements of products with different shapes and heights or different processes on the polishing height can be met, and the applicability of the products is improved;
2. the technical scheme adopts the self-locking speed reducer and the hand wheel to be combined to adjust the height of the driving wheel set, the adjustment is convenient, and the self-locking speed reducer has a self-locking function, so that the driving wheel can be fixed after being adjusted to a certain height and is kept stable;
3. according to the technical scheme, the upper driven wheel is driven by the swing mechanism to swing back and forth, so that the abrasive belt can be prevented from deviating to one side and is always in the middle position, and the processing efficiency and quality are guaranteed;
4. the technical scheme is provided with a travel switch and a photoelectric correlation switch for detecting whether the abrasive belt deviates or not and stopping the motion of the abrasive belt in time after the abrasive belt deviates so as to prevent the abrasive belt or equipment from being damaged;
5. the technical scheme is that the tensioning cylinder can tension or relax the abrasive belt, so that the abrasive belt is convenient to adjust, disassemble and replace;
6. this technical scheme is equipped with the horizontal angle that locking screw can finely tune the base, guarantees the even running and the processingquality of action wheel.
Description of the drawings:
fig. 1 is a schematic perspective view of a wide abrasive belt head with adjustable height according to an embodiment of the present disclosure;
fig. 2 is a schematic perspective view of a wide abrasive belt head with adjustable height according to an embodiment of the present disclosure;
fig. 3 is a schematic three-dimensional structure diagram of a wide abrasive belt machine head with adjustable height according to an embodiment of the present technology;
fig. 4 is a partially enlarged structural schematic view of a driving wheel set of a height-adjustable wide belt sander head according to an embodiment of the present disclosure;
fig. 5 is a partial enlarged structural schematic view of a swing structure of a height-adjustable wide abrasive belt machine head according to an embodiment of the present disclosure;
fig. 6 is a schematic cross-sectional structural diagram of a pedestal bearing of a height-adjustable wide abrasive belt head according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a process for adjusting the height of a driving pulley set of a height-adjustable wide abrasive belt head according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a process of adjusting the height of the driving pulley set of a height-adjustable wide belt sander head according to an embodiment of the present invention.
Description of reference numerals: 1. a fixed seat; 2. a driving wheel set; 3. a passive wheel beam mount; 4. a driven wheel; 5. a swing mechanism; 6. an abrasive belt; 7. a driving wheel; 8. a driving wheel mounting seat; 9. the driving wheel swings the connecting rod; 10. an eccentric shaft; 11. the swing driving wheel swings the driving device; 12. a self-locking speed reducer; 13. a hand wheel; 14. fixing the connecting rod; 15. a movable connecting rod; 16. a coupling; 17. an eccentric shaft connecting rod; 18. an elastic adjusting cylinder; 19. a swing lever; 20. a swinging head; 21. a swing cylinder; 22. a swing guide chute; 23. a pedestal bearing; 24. a travel switch; 25. a photoelectric correlation switch; 26. locking the screw rod; 27. rotating the handle; 28. provided is a deep groove ball bearing.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, 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 meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The height-adjustable wide abrasive belt machine head comprises a fixed seat 1, a driving wheel set 2, a driven wheel beam seat 3, a driven wheel 4, a swing mechanism 5 and an abrasive belt 6, wherein the driving wheel set 2 is arranged at the lower end of the fixed seat 1 and is in rotary adjustable connection with the fixed seat 1, the driven wheel beam seat 3 is arranged above the fixed seat 1, the driven wheel 4 is arranged above the driven wheel beam seat 3 and is in rotary connection with the driven wheel beam seat 3, the swing mechanism 5 is arranged between the lower side of the driven wheel beam seat 3 and the upper side of the fixed seat 1, and the abrasive belt 6 is tightly wrapped outside the driving wheel; the driven wheel beam seat 3 is vertically, movably and rotatably connected with the fixed seat 1, and the driven wheel beam seat 3 can be driven by the swing mechanism 5 to swing in a reciprocating manner;
the driving wheel set 2 comprises a driving wheel 7, a driving wheel mounting seat 8, a driving wheel swinging connecting rod 9 and a driving wheel swinging driving device 11, wherein the driving wheel mounting seat 8 is arranged at two ends of the driving wheel 7 and is rotatably connected with the fixed seat 1, the driving wheel swinging connecting rod 9 is rotatably connected with the driving wheel mounting seat 8, the driving wheel swinging driving device 11 is connected with the driving wheel swinging connecting rod 9 through an eccentric shaft 10, the driving wheel swinging driving device 11 comprises a self-locking speed reducer 12 and a hand wheel 13, the input end of the self-locking speed reducer 12 is connected with the hand wheel 13, one end of the eccentric shaft 10 is fixedly connected;
the hand wheel is rotated to drive the self-locking speed reducer to rotate to drive the eccentric shaft to rotate, so that the driving wheel mounting seat drives the driving wheel to swing, the height of a bottom abrasive belt polishing surface is adjusted, the requirements of products with different shapes and sizes or different processes on the polishing height can be met, after the driving wheel swings to the required height, the hand wheel is stopped to rotate, and the self-locking speed reducer has a self-locking function, so that the height of the driving wheel can be kept fixed at the position, and the use stability is ensured.
The swing mechanism drives the driven wheel to swing in a reciprocating manner, so that the abrasive belt is prevented from deviating to one side to influence product grinding, and the uniform contact abrasion between each part of the abrasive belt and the product can be ensured; the processing stability is ensured.
Furthermore, driving wheel mounting seats 8 on two sides of the driving wheel 7 are rotatably connected with the fixed seat 1 through fixed connecting rods 14, two driving wheel swinging connecting rods 9 are rotatably connected with the driving wheel mounting seats 8 through movable connecting rods 15, and output ends of the two eccentric shafts 10 are respectively and fixedly connected with eccentric shaft connecting rods 17 arranged between the output ends of the two eccentric shafts 10 through couplers 16;
the action wheel both sides all are equipped with the action wheel mount pad, rotate through fixed connecting rod and fixing base and are connected and can guarantee both synchronous linkages, can the synchronous linkage through making the action wheel mount pad of action wheel both sides with the connecting rod more, guarantee structural strength and support intensity, ensure at the in-process of swing adjustment height, the action wheel can normal steady rotation, ensure stability and security.
Furthermore, a tightness adjusting cylinder 18 is arranged between the driven wheel beam seat 3 and the fixed seat 1, and the tightness adjusting cylinder 18 can drive the driven wheel beam seat 3 to vertically lift so as to tension or loosen the abrasive belt 6;
the elastic adjusting cylinder can drive the driven wheel beam seat to vertically lift, so that the abrasive belt is tightened or loosened, and adjustment, disassembly and replacement are convenient.
Furthermore, the swing mechanism 5 comprises a swing rod 19 vertically arranged below one side of the driven wheel beam seat 3, a swing head 20 correspondingly arranged below the swing rod 19 and clamping the swing rod 19 therein, and a swing cylinder 21 correspondingly arranged on the fixed seat 1 and used for driving the swing head 20 to rotate back and forth, wherein a radial swing guide chute 22 is arranged on the swing head 20; the swing rod 19 is clamped in the swing guide chute 22, and when the swing cylinder 21 drives the swing head 20 to swing, the swing rod 19 can slide along the swing guide chute 22;
the swing cylinder drives the swing head to swing in a reciprocating mode, the swing chute drives the swing rod to drive the driven wheel beam seat to swing in a reciprocating mode, and the swing rod always slides in the chute in a reciprocating mode in the swing process and does not exceed the swing chute;
the swing mechanism drives the driven wheel to swing in a reciprocating manner, so that the abrasive belt can be always kept at a required position in the operation process, the abrasive belt is prevented from deviating towards one side to influence product grinding, and the uniform contact abrasion between each part of the abrasive belt and a product can be ensured; the processing stability is ensured.
In one embodiment, two ends of the driving wheel 7 are rotatably connected with the driving wheel mounting seat 8 through a bearing with a seat 23, and two ends of the driven wheel 4 are rotatably connected with the driven wheel beam seat 3 through a bearing with a seat 23;
the bearing frame positioning accuracy is higher and can the aligning, can strengthen life, machining precision and assembly change convenience.
Furthermore, travel switches 24 are respectively arranged on the fixed seat 1 at two outer sides of the abrasive belt 6, and the travel switches 24 can control the stop and rotation of the driving wheel 7;
if the abrasive belt deviates and the deviation is too large, the abrasive belt can touch the travel switch to stop rotating, so that an operator can find the deviation of the abrasive belt in time and stop overhauling immediately, and error expansion is avoided to enable adjustment to be more timely.
Furthermore, a photoelectric correlation switch 25 is respectively arranged on one side of the abrasive belt 6 on the fixed seat 1, and the photoelectric correlation switch 25 can control the stop and rotation of the driving wheel 7;
the dual functions of the photoelectric correlation switch and the travel switch can ensure that the judgment on the deviation of the abrasive belt is more accurate, the response is more timely, and the safety and the fault tolerance are higher.
In one embodiment, one side of the fixed seat 1 is adjustably connected with a machine table through a locking screw 26, and the top of the screw is provided with a rotating handle 27;
thereby rotate the horizontal angle that the fixing base height adjustment action wheel of locking screw rod can conveniently adjust this side, guarantee the horizontal position of action wheel, make the transmission more steady, the effect of polishing is better.
In one embodiment, a deep groove ball bearing 28 is arranged in the bearing with seat 23;
the deep groove ball bearing is higher than the limit speed of other bearings, can prevent to overheat and damage the action wheel pivot after long-time high-speed rotation, increase of service life improves the operating stability.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (9)
1. The utility model provides a height-adjustable's wide abrasive band aircraft nose which characterized in that: the device comprises a fixed seat (1), a driving wheel set (2) which is arranged at the lower end of the fixed seat (1) and is rotatably and adjustably connected with the fixed seat (1), a driven wheel beam seat (3) arranged above the fixed seat (1), a driven wheel (4) which is arranged above the driven wheel beam seat (3) and is rotatably connected with the driven wheel beam seat (3), a swing mechanism (5) arranged between the lower part of the driven wheel beam seat (3) and the upper part of the fixed seat (1), and an abrasive belt (6) tightly wrapped outside the driving wheel (7) and the driven wheel (4);
the driving wheel set (2) comprises a driving wheel (7), a driving wheel mounting seat (8) which is arranged at two ends of the driving wheel (7) and is rotatably connected with the fixing seat (1), a driving wheel swinging connecting rod (9) which is rotatably connected with the driving wheel mounting seat (8), and a driving wheel swinging driving device (11) which is connected with the driving wheel swinging connecting rod (9) through an eccentric shaft (10), wherein the driving wheel swinging driving device (11) comprises a self-locking speed reducer (12) and a hand wheel (13), the input end of the self-locking speed reducer (12) is connected with the hand wheel (13), one end of the eccentric shaft (10) is fixedly connected with the output end of the self-locking speed reducer (12), and the other end of the eccentric shaft; the driven wheel beam seat (3) is vertically lifted and rotatably connected with the fixed seat (1), and the driven wheel beam seat (3) can be driven by the swing mechanism (5) to swing in a reciprocating manner.
2. A height adjustable wide belt machine head as claimed in claim 1, wherein: the driving wheel mounting seats (8) on two sides of the driving wheel (7) are rotatably connected with the fixing seat (1) through fixed connecting rods (14), the two driving wheel swinging connecting rods (9) are rotatably connected with the driving wheel mounting seats (8) through movable connecting rods (15), and the output ends of the two eccentric shafts (10) are respectively fixedly connected with eccentric shaft connecting rods (17) arranged between the output ends of the two eccentric shafts (10) through couplers (16).
3. A height adjustable wide belt machine head as claimed in claim 1, wherein: a tightness adjusting cylinder (18) is arranged between the driven wheel beam seat (3) and the fixed seat (1), and the tightness adjusting cylinder (18) can drive the driven wheel beam seat (3) to vertically lift so as to tension or loosen the abrasive belt (6).
4. A height adjustable wide belt machine head as claimed in claim 1, wherein: the swing mechanism (5) comprises a swing rod (19) vertically arranged below one side of the driven wheel beam seat (3), a swing head (20) correspondingly arranged below the swing rod (19) and clamping the swing rod (19) in the swing mechanism, and a swing cylinder (21) correspondingly arranged on the fixed seat (1) and used for driving the swing head (20) to rotate in a reciprocating manner, wherein a radial swing guide sliding groove (22) is formed in the swing head (20); the swing rod (19) is clamped in the swing guide sliding groove (22), and when the swing cylinder (21) drives the swing head (20) to swing, the swing rod (19) can slide along the swing guide sliding groove (22).
5. A height adjustable wide belt machine head as claimed in claim 1, wherein: the driving wheel (7) is rotatably connected with the driving wheel mounting seat (8) through a bearing with a seat (23), and the driven wheel (4) is rotatably connected with the driven wheel beam seat (3) through the bearing with a seat (23).
6. A height adjustable wide belt machine head as claimed in claim 1, wherein: travel switches (24) are respectively arranged on the two outer sides of the abrasive belt (6) on the fixed seat (1), and the travel switches (24) can control the stop and rotation of the driving wheel (7).
7. A height adjustable wide belt machine head as claimed in claim 1, wherein: photoelectric correlation switches (25) are respectively arranged on the fixed seat (1) on one side of the abrasive belt (6), and the photoelectric correlation switches (25) can control the stop and rotation of the driving wheel (7).
8. A height adjustable wide belt machine head as claimed in claim 1, wherein: one side of the fixed seat (1) is adjustably connected with the machine table through a locking screw rod (26), and a rotating handle (27) is arranged at the top of the screw rod.
9. A height adjustable wide belt machine head as in claim 5 wherein: a deep groove ball bearing (28) is arranged in the bearing (23) with the seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020559743.3U CN212600968U (en) | 2020-04-15 | 2020-04-15 | Height-adjustable's broad width abrasive band aircraft nose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020559743.3U CN212600968U (en) | 2020-04-15 | 2020-04-15 | Height-adjustable's broad width abrasive band aircraft nose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212600968U true CN212600968U (en) | 2021-02-26 |
Family
ID=74703286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020559743.3U Active CN212600968U (en) | 2020-04-15 | 2020-04-15 | Height-adjustable's broad width abrasive band aircraft nose |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212600968U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114683141A (en) * | 2022-04-06 | 2022-07-01 | 上海银象进出口贸易有限公司 | Angle adjustable device of sanding unit of sanding machine |
-
2020
- 2020-04-15 CN CN202020559743.3U patent/CN212600968U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114683141A (en) * | 2022-04-06 | 2022-07-01 | 上海银象进出口贸易有限公司 | Angle adjustable device of sanding unit of sanding machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212600968U (en) | Height-adjustable's broad width abrasive band aircraft nose | |
| CN103029027A (en) | Super-finishing machine for spherical bearing roller | |
| CN206912884U (en) | A kind of multi-faceted sander | |
| CN114714190A (en) | Stainless steel plate deburring equipment for high-voltage switch cabinet | |
| CN108942493A (en) | A kind of glass edge polishing device | |
| CN211465861U (en) | Wide abrasive belt machine head | |
| CN109877677B (en) | Abrasive band machine and use equipment of polishing of this abrasive band machine | |
| CN208005874U (en) | A kind of bilateral straight line milling equipment of chopping block | |
| CN216228476U (en) | A high-efficient chamfer mechanism for steel sheet | |
| CN213829176U (en) | High-precision sponge cutting machine | |
| CN208729350U (en) | Tangent line plate tooth cutlery arrangement for grinding | |
| CN213225562U (en) | Sanding machine | |
| CN114310649A (en) | Super smart machine of grinding | |
| CN221065843U (en) | Super smart machine of lead screw | |
| CN215547604U (en) | Side grinding device | |
| CN111002190A (en) | Square wood processing surface polishing device | |
| CN220699152U (en) | Inclined plane type polishing machine | |
| CN214560034U (en) | Grinding machine clamping mechanism for producing cutter claw rod | |
| CN219837638U (en) | Grinding wheel sharpening machine | |
| CN116551510A (en) | Diesel engine casing inner curve grinding device | |
| CN221495486U (en) | Single-head floor type grinding machine for propeller processing | |
| CN210046429U (en) | Reciprocating swing rotary polishing driving device | |
| CN221755615U (en) | Frame polisher | |
| CN115464479B (en) | Vertical shaft round table surface grinding machine | |
| CN218225846U (en) | Jig and grinding machine using same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |