CN111633671A - A clamping device for bottle lid - Google Patents
A clamping device for bottle lid Download PDFInfo
- Publication number
- CN111633671A CN111633671A CN202010424354.4A CN202010424354A CN111633671A CN 111633671 A CN111633671 A CN 111633671A CN 202010424354 A CN202010424354 A CN 202010424354A CN 111633671 A CN111633671 A CN 111633671A
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- CN
- China
- Prior art keywords
- sliding seat
- seat
- groove
- clamping jaw
- clamping
- Prior art date
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Links
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
- B25J15/0033—Gripping heads and other end effectors with gripping surfaces having special shapes
- B25J15/0038—Cylindrical gripping surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
- B25J15/08—Gripping heads and other end effectors having finger members
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- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Sealing Of Jars (AREA)
Abstract
The invention discloses a clamping device for a bottle cap, which comprises an installation seat with a cylindrical inner cavity, a sliding seat which is slidably arranged in the cylindrical inner cavity in a penetrating manner, a first groove and a second groove which are arranged in the installation seat and are communicated with the cylindrical inner cavity, and an elastic abutting mechanism arranged on the installation seat, wherein the elastic abutting mechanism comprises a connecting rod which is arranged in the first groove and one end of the connecting rod is rotatably connected to the sliding seat; the device also comprises at least two clamping jaws which are rotatably arranged in the second groove and are used for rotating to enter and exit the cylindrical cavity, and an elastic hoop ring hooped on the outer sides of the clamping jaws, wherein the clamping jaws are used for being abutted against the sliding seat through the inner sides of the clamping jaws; when the ejector rod drives the sliding seat to move downwards and enter the clamping jaw, the sliding seat drives the clamping jaw to open; when the bottle cap drives the sliding seat to move upwards and withdraw from the clamping jaw, the elastic hoop drives the clamping jaw to tighten. The clamping device is suitable for clamping bottle caps with different shapes, and is quick and stable in clamping.
Description
Technical Field
The invention relates to the technical field of sealing caps, in particular to a clamping device for a bottle cap.
Background
During the capping process, caps of various irregular shapes, such as a beveled top, a spherical surface, a pattern, etc., are often encountered. Resulting in difficulty in grasping the lid and seriously affecting the capping efficiency.
Disclosure of Invention
The invention aims to provide a clamping device for bottle caps, which can be suitable for clamping and sealing caps of bottle caps with different shapes, is quick in clamping and stable in clamping, and has higher sealing efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that:
a clamping device for a bottle cap is connected to the lower end of a sealing cover seat, a mandril is arranged in the sealing cover seat, the clamping device comprises an installation seat with a cylindrical inner cavity and a sliding seat which can slide up and down and is arranged in the cylindrical inner cavity in a penetrating way, and the cylindrical inner cavity penetrates through the installation seat along the sliding direction of the sliding seat;
the device also comprises a first groove and a second groove which are arranged in the mounting seat at intervals along the circumferential direction, and the first groove and the second groove are both communicated with the cylindrical inner cavity;
the device also comprises an elastic abutting mechanism arranged on the mounting seat, wherein the elastic abutting mechanism comprises a connecting rod which is arranged in the first groove and one end of the connecting rod is rotationally connected to the sliding seat, and the elastic abutting mechanism is used for applying radial elastic abutting force to the sliding seat through the connecting rod;
the device also comprises a clamping jaw which is rotatably arranged in the second groove and is used for rotating to enter and exit the cylindrical inner cavity, and the clamping jaw is used for abutting against the sliding seat through the inner side of the clamping jaw; the device comprises at least two clamping jaws and an elastic hoop hooped on the outer sides of the at least two clamping jaws;
when the ejector rod drives the sliding seat to move downwards and gradually enter the clamping jaw, the sliding seat drives the clamping jaw to rotate to be far away from the cylindrical inner cavity, and the clamping jaw is in an open state;
when the bottle cap drives the sliding seat to move upwards and gradually withdraw from the clamping jaw, the elastic hoop drives the clamping jaw to rotate to enter the cylindrical inner cavity, and the clamping jaw is in a tightening state.
Preferably, the first groove and the second groove are provided in plurality, and are arranged in the mounting seat alternately and uniformly at intervals in sequence.
Preferably, the first groove and the second groove both penetrate through the mounting seat along the sliding direction of the sliding seat.
Preferably, the first and second slots each extend in a radial direction of the cylindrical inner cavity.
Preferably, the elastic abutting mechanism further comprises a spring seat, a spring cover, a guide shaft, a limiting ring and a spring, wherein one end of the spring seat is connected to the side surface of the mounting seat, the spring cover is covered on the other end of the spring seat, the guide shaft can stretch in the length extension direction of the guide shaft and penetrate through the spring seat and the spring cover, the limiting ring is annularly arranged on the guide shaft, the spring is sleeved on the guide shaft and located between the spring cover and the limiting ring, two ends of the guide shaft penetrate out of the spring seat and the spring cover respectively, and the other end of the connecting rod is rotatably connected to one end, penetrating into the first groove, of the guide shaft.
Preferably, the sliding seat includes a protruding portion protruding from an outer peripheral portion of the sliding seat and penetrating into the first groove, and one end of the connecting rod is rotatably connected to the protruding portion.
Preferably, the clamping jaw is rotatably connected in the second groove through the upper end part of the clamping jaw, and the elastic hoop is hooped outside the lower end part of the clamping jaw.
More preferably, the sliding seat comprises a cylindrical upper end part and a conical lower end part which is connected below the cylindrical upper end part and is tapered downwards, and the upper part of the inner side of the clamping jaw is provided with an inclined surface which is used for being matched and attached to the conical surface of the conical lower end part;
when the clamping jaws are in the tightened state, the sliding seat is used for synchronously opening at least two clamping jaws when the sliding seat slides downwards until the conical lower end part slides downwards to be away from the inclined plane;
when the clamping jaws are in the opening state, the sliding seat slides upwards until the lower end part of the cone slides upwards to abut against the inclined plane, and at least two clamping jaws are synchronously folded under the action of the elastic hoop.
Preferably, the device further comprises a mounting ring arranged at the top end of the mounting seat and used for matching the mounting of the cover sealing seat.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the clamping device for the bottle cap, the clamping jaws are switched between the opening state and the tightening state through rotation under the action of the sliding seat and the elastic hoop, the clamping device can be suitable for the bottle caps with different outer diameters, radial elastic tightening force is applied to the sliding seat through the elastic tightening mechanism, the clamping jaws can be stably maintained in the opening state and the tightening state at different angles, clamping is stable, and capping efficiency is high.
Drawings
FIG. 1 is a cross-sectional view of the apparatus of the present invention;
FIG. 2 is a first schematic structural diagram of the apparatus of the present invention;
FIG. 3 is a second schematic structural view of the apparatus of the present invention;
fig. 4 is a schematic structural diagram of the mounting seat.
Wherein: 1. a cover sealing seat; 2. a top rod; 3. a mounting seat; 4. a sliding seat; 41. a cylindrical upper end portion; 42. a tapered lower end portion; 43. a boss portion; 5. a first groove; 6. a second groove; 7. a connecting rod; 8. a clamping jaw; 81. a bevel; 9. an elastic band; 10. a spring seat; 11. a spring cover; 12. a guide shaft; 13. a limiting ring; 14. a spring; 15. a mounting ring; 16. a first pin shaft; 17. a second pin shaft; 18. and a third pin shaft.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
Referring to fig. 1-4, the clamping device for the bottle cap is connected to the lower end of a cap sealing seat 1, and a push rod 2 capable of moving up and down is arranged in the cap sealing seat 1. The device comprises a mounting seat 3 with a cylindrical inner cavity and a mounting ring 15 which is arranged at the top end of the mounting seat 3 and is used for being matched with the sealing cover seat 1 to be mounted. The ejector rod 2 and the mounting ring 15 extend coaxially with the cylindrical inner cavity, and the ejector rod 2 can penetrate through the mounting ring 15 to enter the cylindrical inner cavity. Specifically, the outer circumference of the mounting ring 15 is provided with an external thread, which can be screwed into the cap base 1.
Referring to fig. 1, the clamping device for a bottle cap further includes a sliding seat 4 that is slidably disposed in the cylindrical inner cavity, and the cylindrical inner cavity penetrates through the mounting seat 3 along a sliding direction (i.e., an up-down direction) of the sliding seat 4. In the present embodiment, the sliding seat 4 includes a cylindrical upper end portion 41, and a tapered lower end portion 42 connected below the cylindrical upper end portion 41 and tapered downward. The cylindrical upper end part 41 is annularly propped against the cylindrical inner cavity, and plays a role in guiding the up-and-down sliding of the sliding seat 4.
Referring to fig. 4, the clamping device for the bottle cap further comprises a first groove 5 and a second groove 6 which are arranged in the mounting seat 3 at intervals along the circumferential direction, and the first groove 5 and the second groove 6 are both communicated with the cylindrical inner cavity. In this embodiment, three first grooves 5 and three second grooves 6 are provided in the mounting seat 3, alternately arranged in sequence and uniformly spaced. The first groove 5 and the second groove 6 both penetrate the mount base 3 in the sliding direction (i.e., the up-down direction) of the slide base 4. The first and second grooves 5, 6 each extend in the radial direction of the cylindrical inner cavity and communicate with the cylindrical inner cavity in the radial direction. The three first grooves 5 form 120-degree included angles with each other, the three second grooves 6 form 120-degree included angles with each other, the first grooves 5 form 60-degree included angles with two adjacent second grooves 6, and the second grooves 6 form 60-degree included angles with two adjacent first grooves 5.
Referring to fig. 1-3, the clamping device for a bottle cap further includes an elastic abutting mechanism disposed on the mounting seat 3, and the elastic abutting mechanism includes a connecting rod 7 disposed in the first groove 5 and having a right end (the right end in fig. 1 is the right end) rotatably connected to the sliding seat 4 through a first pin 16. The elastic abutting mechanism is used for applying radial elastic abutting force to the sliding seat 4 through the connecting rod 7.
In this embodiment, the elastic abutting mechanism further includes a spring seat 10 having a right end connected to the side surface of the mounting seat 3, a spring cover 11 covering the left end of the spring seat 10, a guide shaft 12 capable of extending and retracting along the length extending direction of the elastic abutting mechanism and penetrating through the spring seat 10 and the spring cover 11, a limit ring 13 annularly arranged on the guide shaft 12, and a spring 14 sleeved on the guide shaft 12 and located between the spring cover 11 and the limit ring 13, wherein two ends of the guide shaft 12 respectively penetrate through the spring seat 10 and the spring cover 11, that is, the left end of the guide shaft 12 (see fig. 1, the left end in fig. 1 is the left end) penetrates through the spring cover 11 leftward, and the right end of the guide shaft 12 penetrates through the spring seat 10 rightward and extends into the first groove 5. The left end of the connecting rod 7 is rotatably connected to the right end of the guide shaft 12 through a second pin shaft 17. The second pin 17 and the first pin 16 are parallel to each other and to the horizontal plane and perpendicular to the first slot 5.
In this embodiment, the sliding seat 4 includes a protrusion 43 protruding from the outer periphery thereof and penetrating into the first groove 5, and the right end of the link 7 is rotatably connected to the protrusion 43 through the first pin 16. The boss 43 is provided protruding from the cylindrical upper end portion 41. The projection 43 also serves as a guide.
Referring to fig. 1-3, the clamping device for a bottle cap further comprises a clamping jaw 8 which is arranged in the second groove 6 and can rotate around a third pin 18 and is used for rotating to enter and exit the cylindrical inner cavity, and the third pin 18 is parallel to the horizontal plane and is perpendicular to the second groove 6. The clamping jaws 8 are used for abutting against the sliding seat 4 through the inner sides thereof, and the device further comprises elastic hoops 9 hooped on the outer sides of the three clamping jaws 8. The three clamping jaws 8 are correspondingly arranged in the three second grooves 6 one by one.
In the present embodiment, the clamping jaw 8 is rotatably connected in the second groove 6 by its upper end, and the elastic band 9 is fastened outside the lower end of the clamping jaw 8. The upper part of the inner side of the clamping jaw 8 is provided with a bevel 81 which is attached to the conical surface of the conical lower end part 42 for matching.
When the clamping jaws 8 are in a tightening state, the ejector rod 2 drives the sliding seat 4 to move downwards and gradually enter the clamping jaws 8, the sliding seat 4 slides downwards until the conical lower end part 42 slides downwards to leave the inclined plane 81, namely the cylindrical upper end part 41 enters the space between the three clamping jaws 8 downwards, the clamping jaws 8 are driven to rotate to be far away from the cylindrical inner cavity, the three clamping jaws 8 are synchronously opened, and the clamping jaws 8 are switched to an opening state;
when the clamping jaws 8 are in the open state, the bottle cap drives the sliding seat 4 to move upwards and gradually withdraw from the clamping jaws 8, the sliding seat 4 slides upwards until the conical lower end part 42 slides upwards to abut against the inclined surface 81, namely the cylindrical upper end part 41 is higher than the part below the inclined surfaces 81 of the three clamping jaws 8, the elastic hoop 9 drives the clamping jaws 8 to rotate to enter the cylindrical inner cavity, so that the inclined surface 81 always abuts against the conical surface of the conical lower end part 42, and the three clamping jaws 8 are gradually and synchronously closed along with the rising of the sliding seat 4, so that the clamping jaws 8 are switched to the tightening state. The sliding seat 4 has different rising heights and different tightening angles of the clamping jaws 8.
When the jaws 8 are switched between the tightened and the spread condition, the spring 14 is compressed to the maximum when the projection 43 is at the same level as the guide bar, which in this embodiment is the critical position between the tightened and spread condition of the jaws 8. That is, when the jaws 8 are in the tightened state, the links 7 extend in the left-down-right-up direction; when the jaws 8 are in the open state, the links 7 extend in the top left to bottom right direction. Regardless of whether jaws 8 are in a tightened or spread state, springs 14 are in a compressed state to provide a radially elastic abutment force for slide shoe 4 via guide rods and links 7.
The following specifically explains the working process of this embodiment:
when needing to centre gripping bottle lid:
the ejector rod 2 drives the sliding seat 4 to move downwards and gradually enter the clamping jaws 8, the sliding seat 4 firstly props against the inclined plane 81 on the inner side of the clamping jaw 8 through the conical lower end part 42, the clamping jaw 8 is continuously opened along with the continuous downward movement of the sliding seat 4 until the conical lower end part 42 slides downwards to leave the inclined plane 81, and the clamping jaw 8 is opened to the maximum angle after the cylindrical upper end part 41 is downwards squeezed between the three clamping jaws 8;
the bottle cap is aligned to the bottle cap and pressed downwards, meanwhile, the ejector rod 2 is reset, the bottle cap is pushed upwards into the space between the three clamping jaws 8, the sliding seat 4 is jacked up to enable the sliding seat to move upwards, after the bottom of the cylindrical upper end portion 41 is higher than the bottom of the inclined plane 81, the sliding seat 4 upwards slides through the conical lower end portion 42 and abuts against the inclined plane 81, the clamping jaws 8 are gradually closed under the driving of the elastic hoop 9, the inclined plane 81 always abuts against the conical surface of the conical lower end portion 42, and the three clamping jaws 8 are gradually and synchronously closed along with the ascending of the sliding seat 4 until the.
The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (9)
1. The utility model provides a clamping device for bottle lid, connects at the closing cap seat lower extreme, be equipped with ejector pin, its characterized in that in the closing cap seat: the device comprises a mounting seat with a cylindrical inner cavity and a sliding seat which can slide up and down and is arranged in the cylindrical inner cavity in a penetrating way, wherein the cylindrical inner cavity penetrates through the mounting seat along the sliding direction of the sliding seat;
the device also comprises a first groove and a second groove which are arranged in the mounting seat at intervals along the circumferential direction, and the first groove and the second groove are both communicated with the cylindrical inner cavity;
the device also comprises an elastic abutting mechanism arranged on the mounting seat, wherein the elastic abutting mechanism comprises a connecting rod which is arranged in the first groove and one end of the connecting rod is rotationally connected to the sliding seat, and the elastic abutting mechanism is used for applying radial elastic abutting force to the sliding seat through the connecting rod;
the device also comprises a clamping jaw which is rotatably arranged in the second groove and is used for rotating to enter and exit the cylindrical inner cavity, and the clamping jaw is used for abutting against the sliding seat through the inner side of the clamping jaw; the device comprises at least two clamping jaws and an elastic hoop hooped on the outer sides of the at least two clamping jaws;
when the ejector rod drives the sliding seat to move downwards and gradually enter the clamping jaw, the sliding seat drives the clamping jaw to rotate to be far away from the cylindrical inner cavity, and the clamping jaw is in an open state;
when the bottle cap drives the sliding seat to move upwards and gradually withdraw from the clamping jaw, the elastic hoop drives the clamping jaw to rotate to enter the cylindrical inner cavity, and the clamping jaw is in a tightening state.
2. A gripping device for caps according to claim 1, characterised in that: the first groove with the second groove all has a plurality ofly, and alternate and interval align's locate in proper order in the mount pad.
3. A gripping device for caps according to claim 1, characterised in that: the first groove and the second groove penetrate through the mounting seat along the sliding direction of the sliding seat.
4. A gripping device for caps according to claim 1, characterised in that: the first and second slots each extend in a radial direction of the cylindrical inner cavity.
5. A gripping device for caps according to claim 1, characterised in that: the elastic abutting mechanism further comprises a spring seat, a spring cover, a guide shaft and a limiting ring, wherein one end of the spring cover is connected to the side face of the mounting seat, the spring cover is arranged at the other end of the spring seat, the guide shaft and the limiting ring are arranged in the spring cover in a penetrating mode, the guide shaft can stretch in the length extending direction of the spring cover, the limiting ring and the limiting ring are arranged on the guide shaft in a sleeved mode, the spring cover is arranged on the guide shaft and located between the spring cover and the limiting ring, two ends of the guide shaft penetrate out of the spring seat and the spring cover respectively, and the other end of the connecting rod is connected in a rotating mode that.
6. A gripping device for caps according to claim 1, characterised in that: the sliding seat comprises a protruding part which is convexly arranged on the periphery of the outer side of the sliding seat and penetrates into the first groove, and one end of the connecting rod is rotatably connected to the protruding part.
7. A gripping device for caps according to claim 1, characterised in that: the clamping jaw is rotatably connected in the second groove through the upper end part of the clamping jaw, and the elastic hoop is hooped on the outer side of the lower end part of the clamping jaw.
8. A gripping device for caps according to claim 7, characterised in that: the sliding seat comprises a cylindrical upper end part and a conical lower end part which is connected below the cylindrical upper end part and is tapered downwards, and the upper part of the inner side of the clamping jaw is provided with an inclined surface which is used for being matched and attached to the conical surface of the conical lower end part;
when the clamping jaws are in the tightened state, the sliding seat is used for synchronously opening at least two clamping jaws when the sliding seat slides downwards until the conical lower end part slides downwards to be away from the inclined plane;
when the clamping jaws are in the opening state, the sliding seat slides upwards until the lower end part of the cone slides upwards to abut against the inclined plane, and at least two clamping jaws are synchronously folded under the action of the elastic hoop.
9. A gripping device for caps according to claim 1, characterised in that: the device is characterized by further comprising a mounting ring which is arranged at the top end of the mounting seat and used for being matched with the sealing cover seat to mount.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010424354.4A CN111633671B (en) | 2020-05-19 | 2020-05-19 | Clamping device for bottle cap |
| PCT/CN2021/094273 WO2021233274A1 (en) | 2020-05-19 | 2021-05-18 | Clamping device for bottle cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010424354.4A CN111633671B (en) | 2020-05-19 | 2020-05-19 | Clamping device for bottle cap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111633671A true CN111633671A (en) | 2020-09-08 |
| CN111633671B CN111633671B (en) | 2024-09-03 |
Family
ID=72324721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010424354.4A Active CN111633671B (en) | 2020-05-19 | 2020-05-19 | Clamping device for bottle cap |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111633671B (en) |
| WO (1) | WO2021233274A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112357859A (en) * | 2020-10-28 | 2021-02-12 | 江苏新美星包装机械股份有限公司 | Three-jaw cover grabbing head with mechanical self-locking function |
| CN113212855A (en) * | 2021-05-07 | 2021-08-06 | 江苏食品药品职业技术学院 | Material clamping device in automatic food boxing machine |
| WO2021233274A1 (en) * | 2020-05-19 | 2021-11-25 | 江苏新美星包装机械股份有限公司 | Clamping device for bottle cap |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115284306B (en) * | 2022-07-05 | 2023-07-18 | 东南大学 | Robot manipulator with adjustable |
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| WO2021233274A1 (en) * | 2020-05-19 | 2021-11-25 | 江苏新美星包装机械股份有限公司 | Clamping device for bottle cap |
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| CA466292A (en) * | 1950-07-04 | Robert Allen Kenneth | Capping head | |
| CN102838065A (en) * | 2012-08-20 | 2012-12-26 | 江苏星A包装机械集团有限公司 | Cap-spinning mould capable of adapting to various bottle caps |
| CN103072141A (en) * | 2013-01-22 | 2013-05-01 | 昆山市佰奥自动化设备科技有限公司 | Clamping jaw |
| CN103707078A (en) * | 2013-05-13 | 2014-04-09 | 莆田市荣兴机械有限公司 | Automatic positioning clamping device for internal circular holes of discs |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021233274A1 (en) * | 2020-05-19 | 2021-11-25 | 江苏新美星包装机械股份有限公司 | Clamping device for bottle cap |
| CN112357859A (en) * | 2020-10-28 | 2021-02-12 | 江苏新美星包装机械股份有限公司 | Three-jaw cover grabbing head with mechanical self-locking function |
| CN113212855A (en) * | 2021-05-07 | 2021-08-06 | 江苏食品药品职业技术学院 | Material clamping device in automatic food boxing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021233274A1 (en) | 2021-11-25 |
| CN111633671B (en) | 2024-09-03 |
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