CN216461699U - Foundry goods sprays uses adjustment mechanism - Google Patents
Foundry goods sprays uses adjustment mechanism Download PDFInfo
- Publication number
- CN216461699U CN216461699U CN202122737024.3U CN202122737024U CN216461699U CN 216461699 U CN216461699 U CN 216461699U CN 202122737024 U CN202122737024 U CN 202122737024U CN 216461699 U CN216461699 U CN 216461699U
- Authority
- CN
- China
- Prior art keywords
- plate
- guide
- adjusting mechanism
- sliding
- motor
- 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.)
- Expired - Fee Related
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 38
- 239000007921 spray Substances 0.000 title claims description 19
- 238000005507 spraying Methods 0.000 claims abstract description 46
- 238000005266 casting Methods 0.000 claims abstract description 41
- 238000004804 winding Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000007528 sand casting Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009718 spray deposition Methods 0.000 description 1
Images
Landscapes
- Spray Control Apparatus (AREA)
Abstract
The utility model provides a casting spraying adjusting mechanism, which comprises: the adjusting mechanism main body is rotatably connected with a first lead screw which is vertically arranged; the first motor is connected with the first screw rod; the sliding plate can be installed on the adjusting mechanism body in a vertically sliding manner; the transverse plate is rotatably connected with a second screw rod which is horizontally arranged; the second motor is connected with the second screw rod; the mounting plate can be arranged on the transverse plate in a left-right sliding manner; the sliding plate is fixedly connected with the first sliding block of the first lead screw, the transverse plate is horizontally arranged and fixedly connected with the sliding plate, the mounting plate is fixedly connected with the second sliding block of the second lead screw, the mounting plate is used for mounting the spraying device, and a workbench used for placing a casting is arranged below one side, far away from the sliding plate, of the transverse plate. The first motor and the first screw rod drive the sliding plate to slide up and down, and the second motor and the second screw rod drive the mounting plate to slide left and right, so that the spraying device can move up and down and left and right, can adapt to the spraying of castings with various sizes and shapes, and is good in spraying effect and high in spraying efficiency.
Description
Technical Field
The utility model relates to the technical field of sand casting spraying equipment, in particular to an adjusting mechanism for casting spraying.
Background
Sand casting is a casting method for producing castings in sand molds, and because the molding materials used for sand casting are cheap and easy to obtain, the casting mold is simple and convenient to manufacture, and can adapt to single-piece production, batch production and mass production of castings, the sand casting is a basic process in casting production for a long time.
The sand casting usually needs to be sprayed, the surface of the casting is cleaned through spraying, the casting is cooled through spraying, the currently adopted spraying device is usually vertical and sprays the casting transversely, and a rotatable clamp is also needed to rotate the casting to match with spraying, so that the spraying effect is poor, the efficiency is low, and the adaptability is poor; therefore, there is a need for an adjustment mechanism for use in spraying castings.
SUMMERY OF THE UTILITY MODEL
The utility model provides an adjusting mechanism for casting spraying, which is used for meeting the requirements.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an adjustment mechanism for spray casting, comprising: the adjusting mechanism main body is rotatably connected with a first lead screw which is vertically arranged; the first motor is connected with the first screw rod; a sliding plate which is mounted on the adjusting mechanism main body in a vertically slidable manner; the transverse plate is rotatably connected with a second screw rod which is horizontally arranged; the second motor is connected with the second screw rod; the mounting plate is arranged on the transverse plate in a left-right sliding manner; the sliding plate is fixedly connected with the first sliding block of the first lead screw, the transverse plate is located on one side, away from the adjusting mechanism body, of the sliding plate, the transverse plate is horizontally arranged and fixedly connected with the sliding plate, the mounting plate is fixedly connected with the second sliding block of the second lead screw, the mounting plate is located on one side, away from the sliding plate, of the transverse plate, the mounting plate is used for mounting the spraying device, and a workbench used for placing a casting is arranged below one side, away from the sliding plate, of the transverse plate.
In one embodiment disclosed by the utility model, the workbench comprises a first workbench and a second workbench, the first workbench is arranged on the ground, the second workbench is provided with a base, the second workbench is arranged on the ground through the base, and the height of the second workbench is greater than that of the first workbench.
In one embodiment of the utility model, a third motor is arranged in the base, the top of the base is rotatably connected with a turntable, the top of the turntable is fixedly connected with the bottom of the second workbench, and the third motor is connected with the turntable.
In one embodiment of the present disclosure, the mounting plate is a right-angle plate.
In one embodiment of the disclosure, the adjusting mechanism body is vertically provided with a first guide plate, the left side and the right side of the first guide plate are both provided with a first guide groove, the sliding plate is provided with a first guide block matched with the first guide groove, and the sliding plate is connected with the first guide plate in a sliding manner through the first guide groove and the first guide block.
In one embodiment of the disclosure, the first guide block is rotatably connected with a ball adapted to the first guide groove, and the first guide block is slidably connected with the first guide plate through the ball and the first guide groove.
In one embodiment of the disclosure, the number of the first guide plates is 2, and the 2 first guide plates are symmetrically arranged on the left side and the right side of the first screw rod.
In one embodiment disclosed by the utility model, the transverse plate is vertically provided with a second guide plate, one side of the second guide plate, which is far away from the second screw rod, is provided with a second guide groove, the mounting plate is provided with a second guide block matched with the second guide groove, and the mounting plate is connected with the second guide plate in a sliding manner through the second guide groove and the second guide block.
In one embodiment of the utility model, the number of the second guide plates is 2, the 2 second guide plates are symmetrically arranged on the upper side and the lower side of the second screw rod, and the second guide blocks are fixedly connected with the second sliding block.
In one embodiment disclosed by the utility model, a fourth motor and 2 symmetrically arranged pulleys are arranged on the upper part of the adjusting mechanism main body, the fourth motor is connected with a winding wheel, 2 pull ropes are wound on the winding wheel in a winding manner, and the 2 pull ropes are respectively connected with the top of the transverse plate through the 2 pulleys.
In conclusion, the utility model has the following beneficial effects: the first motor and the first screw rod drive the sliding plate to slide up and down, and the second motor and the second screw rod drive the mounting plate to slide left and right, so that the spraying device moves left and right up and down, the spraying device capable of being adjusted in multiple directions sprays towards castings from top to bottom, the spraying device can adapt to the spraying of castings with various sizes and shapes, and is good in spraying effect and high in spraying efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of an adjusting mechanism for spraying castings according to some embodiments of the present invention.
Fig. 2 is a schematic view of a first guide plate according to some embodiments of the present invention.
Fig. 3 is a schematic view of a second guide plate according to some embodiments of the present invention.
Fig. 4 is a schematic diagram of a pull cord and pulley arrangement according to some embodiments of the present invention.
Reference numerals:
1. an adjustment mechanism body; 11. a first lead screw; 111. a first slider; 12. a first motor; 13. a sliding plate;
2. a transverse plate; 21. a second lead screw; 211. a second slider; 22. a second motor; 23. mounting a plate;
3. a spraying device;
4. a work table; 41. a first table; 42. a second table; 43. a base; 44. a third motor; 45. a turntable;
5. a first guide plate; 51. a first guide block; 52. a ball bearing;
6. a second guide plate; 61. a second guide block;
71. a fourth motor; 72. a winding wheel; 73. pulling a rope; 74. a pulley.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the embodiments of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention.
Furthermore, the terms "first", "second" and "first" 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" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In embodiments of the utility model, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the utility model. To simplify the disclosure of embodiments of the utility model, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the utility model. Furthermore, embodiments of the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the present embodiment provides an adjusting mechanism for casting spraying, including: the adjusting mechanism body 1 is rotatably connected with a first lead screw 11 which is vertically arranged; the first motor 12 is connected with the first screw rod 11; a slide plate 13 vertically slidably attached to the adjustment mechanism body 1; the transverse plate 2 is rotatably connected with a second screw rod 21 which is horizontally arranged; the second motor 22 is connected with the second screw rod 21; a mounting plate 23 mounted on the cross plate 2 in a left-right slidable manner; the sliding plate 13 is fixedly connected with the first sliding block 111 of the first lead screw 11, the transverse plate 2 is located on one side of the sliding plate 13 away from the adjusting mechanism body 1, the transverse plate 2 is horizontally arranged and fixedly connected with the sliding plate 13, the mounting plate 23 is fixedly connected with the second sliding block 211 of the second lead screw 21, the mounting plate 23 is located on one side of the transverse plate 2 away from the sliding plate 13, the mounting plate 23 is used for mounting the spraying device 3, and the workbench 4 used for placing castings is arranged below one side of the transverse plate 2 away from the sliding plate 13.
It should be understood that the first motor 12 drives the first lead screw 11 to rotate, the first lead screw 11 drives the first slide block 111 to move up and down, the first slide block 111 drives the slide plate 13 to slide up and down, the slide plate 13 drives the transverse plate 2 to move up and down, and the transverse plate 2 drives the spraying device 3 on the mounting plate 23 to move up and down;
the second motor 22 drives the second screw rod 21 to rotate, the second screw rod 21 drives the second sliding block 211 to move left and right, the second sliding block 211 drives the mounting plate 23 to slide left and right, and the mounting plate 23 drives the spraying device 3 to move left and right;
in conclusion, the spraying device 3 can move up and down and left and right, in practical application, the spraying device 3 can be adjusted to a proper position to spray the casting only by placing the casting on the workbench 4 or using a protection part such as a baffle plate to prevent the casting from sliding after placing the casting, a special clamp is not needed to clamp the casting, the casting does not need to be turned and displaced by a special turnable clamp, the spraying effect is good, the spraying efficiency is high, and the spraying device is suitable for spraying most castings and has good adaptability;
the spraying device 3 can use the existing equipment, the scheme does not relate to the improvement of the spraying device 3, only the adjusting mechanism for spraying the casting is additionally arranged to adjust the direction of the spraying device 3, and the spraying device 3 mainly sprays the casting from top to bottom; of course, the spraying device 3 can also be used for other spraying directions.
In some embodiments, the working table 4 comprises a first working table 414 and a second working table 424, the first working table 414 is installed on the ground, the second working table 424 is provided with a base 43, the second working table 424 is installed on the ground through the base 43, and the height of the second working table 424 is greater than that of the first working table 414. In this scheme, first workstation 414 with second workstation 424 can left and right sides is arranged, and the height is different, and the casting of convenient different sizes, shape sprays, further improves the adaptability.
In some embodiments, a third motor 44 is disposed inside the base 43, a rotating disc 45 is rotatably connected to the top of the base 43, the top of the rotating disc 45 is fixedly connected to the bottom of the second working platform 424, and the third motor 44 is connected to the rotating disc 45. In this scheme, third motor 44 drive carousel 45 rotates, carousel 45 drives second workstation 424 rotates to the cooperation spray set 3 sprays, can improve and spray effect and spray efficiency.
In some embodiments, the mounting plate 23 is a right angle plate. In this scheme, the right-angle plate-shaped mounting panel 23 facilitates the installation of the spray devices 3 in different spray directions, and further improves the adaptability.
In some embodiments, as shown in fig. 1 and 2, the adjusting mechanism body 1 is vertically provided with a first guide plate 5, first guide grooves are opened on both left and right sides of the first guide plate 5, the sliding plate 13 is provided with a first guide block 51 adapted to the first guide grooves, and the sliding plate 13 is slidably connected to the first guide plate 5 through the first guide grooves and the first guide block 51. In this embodiment, the sliding plate 13 is guided by the first guide plate 5 and the first guide block 51, so that the sliding plate 13 slides stably and rattling is reduced.
In some embodiments, a ball 52 adapted to the first guide groove is rotatably connected to the first guide block 51, and the first guide block 51 is slidably connected to the first guide plate 5 through the ball 52 and the first guide groove. In this embodiment, the ball 52 and the first guide plate 5 guide the slide plate 13, so that the slide plate 13 slides stably and rattle is reduced.
In some embodiments, there are 2 first guide plates 5, and 2 first guide plates 5 are symmetrically disposed on the left and right sides of the first lead screw 11. In this embodiment, the slide plate 13 is further made to slide stably, and the wobbling is reduced.
In some embodiments, as shown in fig. 1 and 3, the transverse plate 2 is vertically provided with a second guide plate 6, a second guide groove is formed on a side of the second guide plate 6 away from the second lead screw 21, the mounting plate 23 is provided with a second guide block 61 adapted to the second guide groove, and the mounting plate 23 is slidably connected to the second guide plate 6 through the second guide groove and the second guide block 61. In this embodiment, the mounting plate 23 is guided by the second guide plate 6 and the second guide block 61, so that the mounting plate 23 slides stably and the shaking is reduced.
In some embodiments, there are 2 second guide plates 6, 2 second guide plates 6 are symmetrically disposed on the upper and lower sides of the second screw 21, and the second guide block 61 is fixedly connected to the second sliding block 211. In this aspect, the mounting plate 23 is further made to slide stably, and the wobbling is reduced.
In some embodiments, as shown in fig. 1 and 4, a fourth motor 71 and 2 symmetrically arranged pulleys 74 are arranged on the upper portion of the adjusting mechanism body 1, the fourth motor 71 is connected with a winding wheel 72, the winding wheel 72 is wound with 2 pulling ropes 73 in a winding manner, and the 2 pulling ropes 73 are respectively connected with the top of the transverse plate 2 through the 2 pulleys 74. In this embodiment, the pull rope 73 is wound or unwound by the fourth motor 71 to cooperate with the vertical sliding of the transverse plate 2, so as to reduce the load of the first lead screw 11, reduce the wear between the first lead screw 11 and the first slider 111, prolong the service life, and reduce the cost of equipment maintenance, repair and replacement to a certain extent.
The above embodiments describe a plurality of specific embodiments of the present invention, but it should be understood by those skilled in the art that various changes or modifications may be made to these embodiments without departing from the principle and spirit of the present invention, and these changes and modifications fall within the scope of the present invention.
Claims (10)
1. The utility model provides a foundry goods sprays uses adjustment mechanism which characterized in that includes:
the adjusting mechanism main body is rotatably connected with a first lead screw which is vertically arranged;
the first motor is connected with the first screw rod;
a sliding plate which is mounted on the adjusting mechanism main body in a vertically slidable manner;
the transverse plate is rotatably connected with a second screw rod which is horizontally arranged;
the second motor is connected with the second screw rod;
the mounting plate is arranged on the transverse plate in a left-right sliding manner;
the sliding plate is fixedly connected with the first sliding block of the first lead screw, the transverse plate is located on one side, away from the adjusting mechanism body, of the sliding plate, the transverse plate is horizontally arranged and fixedly connected with the sliding plate, the mounting plate is fixedly connected with the second sliding block of the second lead screw, the mounting plate is located on one side, away from the sliding plate, of the transverse plate, the mounting plate is used for mounting the spraying device, and a workbench used for placing a casting is arranged below one side, away from the sliding plate, of the transverse plate.
2. A casting spray adjustment mechanism as recited in claim 1, wherein the table comprises a first table and a second table, the first table being mounted on the ground, the second table being provided with a base, the second table being mounted on the ground via the base, the second table having a height greater than the height of the first table.
3. The adjusting mechanism for casting spray of claim 2, wherein a third motor is arranged in the base, a rotary table is rotatably connected to the top of the base, the top of the rotary table is fixedly connected to the bottom of the second worktable, and the third motor is connected to the rotary table.
4. An adjustment mechanism for use in connection with the spraying of castings according to claim 1, wherein said mounting plate is a right angle plate.
5. The adjusting mechanism for spraying castings according to claim 1, wherein a first guide plate is vertically arranged on the adjusting mechanism body, first guide grooves are formed in both left and right sides of the first guide plate, the sliding plate is provided with a first guide block adapted to the first guide grooves, and the sliding plate is slidably connected to the first guide plate through the first guide grooves and the first guide block.
6. An adjusting mechanism for casting spray according to claim 5 wherein the first guide block is rotatably connected with a ball adapted to the first guide groove, and the first guide block is slidably connected with the first guide plate through the ball and the first guide groove.
7. The adjusting mechanism for casting spray of claim 6 wherein said first guide plate has 2 pieces, and 2 pieces of said first guide plate are symmetrically disposed on left and right sides of said first lead screw.
8. The adjusting mechanism for casting spraying according to claim 1, wherein a second guide plate is vertically arranged on the transverse plate, a second guide groove is formed in one side, away from the second lead screw, of the second guide plate, the mounting plate is provided with a second guide block matched with the second guide groove, and the mounting plate is slidably connected with the second guide plate through the second guide groove and the second guide block.
9. The adjusting mechanism for casting spray of claim 8, wherein the second guide plate has 2 pieces, the 2 pieces of the second guide plate are symmetrically arranged on the upper and lower sides of the second screw rod, and the second guide block is fixedly connected with the second slide block.
10. The adjusting mechanism for casting spraying according to claim 1, wherein a fourth motor and 2 symmetrically arranged pulleys are arranged on the upper portion of the adjusting mechanism body, the fourth motor is connected with a winding wheel, 2 pull ropes are wound on the winding wheel in a winding mode, and the 2 pull ropes are connected with the top of the transverse plate through the 2 pulleys respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122737024.3U CN216461699U (en) | 2021-11-10 | 2021-11-10 | Foundry goods sprays uses adjustment mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122737024.3U CN216461699U (en) | 2021-11-10 | 2021-11-10 | Foundry goods sprays uses adjustment mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216461699U true CN216461699U (en) | 2022-05-10 |
Family
ID=81450124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122737024.3U Expired - Fee Related CN216461699U (en) | 2021-11-10 | 2021-11-10 | Foundry goods sprays uses adjustment mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216461699U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117399606A (en) * | 2023-12-02 | 2024-01-16 | 沃尔林自动化(苏州)有限公司 | Cooling device with water cooling and blowing functions |
-
2021
- 2021-11-10 CN CN202122737024.3U patent/CN216461699U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117399606A (en) * | 2023-12-02 | 2024-01-16 | 沃尔林自动化(苏州)有限公司 | Cooling device with water cooling and blowing functions |
| CN117399606B (en) * | 2023-12-02 | 2024-04-02 | 沃尔林自动化(苏州)有限公司 | Cooling device with water cooling and blowing functions |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN216461699U (en) | Foundry goods sprays uses adjustment mechanism | |
| CN209062757U (en) | A kind of grinding device with collection material residue | |
| US20100252220A1 (en) | Core-setting method and apparatus for a molding apparatus for producing flaskless molds | |
| CN114618916A (en) | Large bending machine for flat ground feet | |
| CN109986550A (en) | Rotating transfer feed device | |
| CN213387642U (en) | Battery pack lifting device for replacing new energy automobile battery | |
| CN116423069A (en) | Controller shell cutting equipment | |
| CN217726684U (en) | Passive blowing device of shaping of seamless internal thread copper pipe | |
| CN205852789U (en) | Many die cavitys stage die mobile manipulator | |
| CN211361190U (en) | Support positioning and switching device | |
| CN208324694U (en) | A kind of four axis engraving machines | |
| CN114769066B (en) | Coating device for aluminum template production | |
| CN220464556U (en) | Guiding mechanism of injection mold die carrier | |
| CN109291332A (en) | A kind of processing jig for plastic mould | |
| CN109396403A (en) | One kind is for the small cast member withdrawing device after cooling of batch | |
| CN219820133U (en) | Semiautomatic sand rain device capable of controlling drop distance and adjusting sand outlet | |
| CN220491723U (en) | Tool for voltage transformer die filling | |
| CN213104015U (en) | Die driving device of die-cutting mechanism | |
| CN212751473U (en) | Switch board convenient to adjust inside bearing structure | |
| CN220347958U (en) | Surface polishing device for acrylic plate production | |
| CN213033934U (en) | Movable station table for mesh enclosure machining | |
| CN210877438U (en) | Lifting output mechanism for molding machine | |
| CN114454411B (en) | Water-gas-electricity automatic butt joint device of automobile interior molding machine | |
| CN210443035U (en) | Adjusting rod for pouring teaching | |
| CN213614111U (en) | Full-automatic molten iron casting machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220510 |