CN218963907U - Forging and pressing mould of hollow rivet - Google Patents
Forging and pressing mould of hollow rivet Download PDFInfo
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- CN218963907U CN218963907U CN202223481203.6U CN202223481203U CN218963907U CN 218963907 U CN218963907 U CN 218963907U CN 202223481203 U CN202223481203 U CN 202223481203U CN 218963907 U CN218963907 U CN 218963907U
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Abstract
The utility model provides a forging mould for a hollow rivet, belongs to the technical field of forging moulds, and aims to solve the problem that the labor intensity of manual feeding of workers is high when the existing rivet forging mould is in use; comprising the following steps: the device comprises a forging base, a forging mounting piece, a safety auxiliary mechanism, a feeding driving motor, an upper forging die, a lower forging die and a rivet forming piece; the forging and pressing installation piece is arranged above the forging and pressing base; the safety auxiliary mechanism is arranged above the forging base; the feeding driving motor is fixedly connected below the forging base; the upper forging die is fixedly connected below the forging mounting piece; the lower forging die is fixedly connected above the forging base; the utility model avoids adhering the rivet forming part to the upper forging press die, facilitates the taking of the rivet forming part, avoids the working area of forging and pressing dies by hands of workers, increases the safety of the whole forging and pressing die, realizes automatic feeding and receiving, and reduces the labor intensity of workers.
Description
Technical Field
The utility model belongs to the technical field of forging dies, and particularly relates to a forging die for a hollow rivet.
Background
The rivet is an important component part of many mechanical equipment, the rivet is generally formed by forging and stamping in the production process, the forging and stamping are combined, and the forging and stamping machine is a forming processing method for obtaining a workpiece with a required shape and size by applying pressure to a blank by utilizing a hammer head, an anvil block, a punch head or a die of forging and stamping machinery to make the blank plastically deformed, and the existing forging and stamping die is generally formed by an upper die and a lower die.
The prior application number is: the utility model provides a forging die for producing automobile parts, which solves the problem of low test efficiency of forging riveting equipment in the background technology. The utility model comprises a base body, a bottom plate and a top plate are arranged on the base body, a to-be-pressed piece is arranged on the bottom plate, a power piece is arranged on the top plate, the to-be-pressed piece is arranged on a supporting ring, the supporting ring is vertically arranged on the bottom plate in a sliding mode, an inclined plane at the lower end of the supporting ring is matched with an inclined plane at the upper end of a top supporting block, the top supporting block is transversely arranged on the bottom plate in a sliding mode, a screw I for tightly supporting the top supporting block is arranged on the bottom plate, a support is arranged on the bottom plate, a transversely sliding plate is arranged on the support, at least two acting pieces are arranged on the sliding plate, and a fixing piece is arranged on the sliding plate. The utility model has the advantages that: the sliding plate can be used for realizing the rapid switching of the acting piece, so that the defect of stopping the machine and replacing the acting piece is avoided; the pressing piece to be pressed is arranged on the supporting ring, and the positions of the supporting blocks are adjusted through the inclined plane supporting cooperation of the supporting blocks and the supporting ring, so that adjustment of different heights of the pressing piece to be pressed is realized.
Based on the above, current rivet forging mould is in use, needs the workman to put into forging mould's work area with the rivet blank, then operates forging mould and forge forming to the rivet blank, when workman's operation is lost, has the risk that the mould extrudeed workman's hand, has the potential safety hazard, and workman manual material loading intensity of labour is great moreover.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a forging die for a hollow rivet, which aims to solve the problems that in use of the existing rivet forging die, a worker is required to put a rivet blank into a working area of the forging die, then the forging die is operated to forge and mold the rivet blank, when the operation of the worker is lost, the die is extruded to the hands of the worker, potential safety hazards exist, and the labor intensity of manual feeding of the worker is high.
The utility model discloses a forging mould of a hollow rivet, which is characterized by comprising the following specific technical means:
a forging die for a blind rivet, comprising: the device comprises a forging base, a forging mounting piece, a safety auxiliary mechanism, a feeding driving motor, an upper forging die, a lower forging die and a rivet forming piece;
the forging and pressing installation piece is arranged above the forging and pressing base;
the safety auxiliary mechanism is arranged above the forging base;
the feeding driving motor is fixedly connected below the forging base;
the upper forging die is fixedly connected below the forging mounting piece;
the lower forging die is fixedly connected above the forging base;
the rivet forming part is arranged between the upper forging die and the lower forging die.
Further, the forging and pressing mounting includes: a guide hole and a guide post;
the three groups of guide holes are respectively arranged above the forging base;
the guide posts are provided with three groups, the three groups of guide posts are respectively and fixedly connected below the forging and pressing installation piece, and the positions of the three groups of guide posts correspond to the positions of the guide holes respectively.
Further, the safety auxiliary mechanism comprises: a feeding driving shaft, a feeding auxiliary turntable and a placing groove;
the feeding driving shaft is rotationally connected to the right side above the forging base, and the lower end of the feeding driving shaft is fixedly connected with the rotating shaft of the feeding driving motor in a coaxial manner;
the feeding auxiliary turntable is coaxially and fixedly connected above the feeding driving shaft;
the holding tank is provided with the multiunit, and multiunit holding tank is circular hole structure, and the top centrifugation department of the supplementary carousel of material loading is all seted up to the holding tank to rivet forming part is placed in the inside of holding tank respectively.
Further, the safety auxiliary mechanism further comprises: the device comprises an auxiliary supporting piece, an auxiliary blanking piece, a blanking groove, a discharging sliding plate and a discharging collecting groove;
the auxiliary supporting piece is of a cylindrical structure and fixedly connected to the right side above the forging base, and is arranged on the periphery of the feeding driving shaft;
the auxiliary blanking piece is fixedly connected above the auxiliary supporting piece, and is arranged below the feeding auxiliary turntable;
the blanking groove is arranged on the left side of the auxiliary blanking piece and is of a semicircular structure;
the discharging slide plate is fixedly connected to the front of the lower forging die;
the discharge collecting tank is fixedly connected above the forging base, and the discharge collecting tank is arranged below the discharge sliding plate.
Further, the upper forging die comprises: the first forging ejection groove, the first forging ejection piece and the first forging ejection spring;
the first forging ejection groove is formed in the upper forging die;
the first forging ejection piece is connected in a sliding manner in the first forging ejection groove, and a limiting block structure is arranged on the first forging ejection piece;
the upper end of the first forging ejection spring is fixedly connected with the upper end of the first forging ejection groove, and the lower end of the first forging ejection spring is fixedly connected with a limiting block of the first forging ejection piece.
Further, the lower forging die comprises: the second forging ejection groove, the second forging ejection piece and the second forging ejection spring;
the second forging ejection groove is formed in the lower forging die;
the second forging ejection piece is connected in a sliding manner in the second forging ejection groove, and a limiting block structure is arranged on the second forging ejection piece;
the lower end of the second forging ejection spring is fixedly connected with the lower end of the second forging ejection groove, and the upper end of the second forging ejection spring is fixedly connected with a limiting block of the second forging ejection piece.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, through the arrangement of the guide posts, when the rivet forming part is forged, the forging mounting part moves downwards at the moment, the forging mounting part moves downwards to drive the guide posts to move downwards, the guide posts move downwards to enter the guide holes, the guide holes realize the guide function of the forging mounting part, and the three groups of guide posts are arranged, so that the rivet forming part is conveniently taken out.
According to the utility model, through the arrangement of the safety auxiliary mechanism, when the rivet forming part is required to be fed, a worker can put the rivet forming part into the placing groove, then the feeding driving motor is started, the feeding driving motor rotates to drive the feeding driving shaft to rotate, the feeding driving shaft rotates to drive the feeding auxiliary turntable to rotate, the feeding auxiliary turntable rotates to drive the placing groove to rotate, the placing groove rotates to drive the rivet forming part to rotate, when the rivet forming part rotates to the position of the blanking groove, the rivet forming part falls above the lower forging die, then the upper forging die is controlled to forge the rivet forming part on the lower forging die, after the rivet forming part is forged and formed, the feeding auxiliary turntable is continuously rotated, the feeding auxiliary turntable rotates to drop the rivet forming part onto the discharging slide plate, and at the moment, the rivet forming part enters the discharging collecting groove along the discharging slide plate, the collecting of the rivet forming part is realized, the working area of the forging die is avoided, the safety of the whole forging die is improved, automatic feeding and collecting are realized, and the labor intensity of the worker is lightened.
According to the utility model, through the arrangement of the first forging ejection piece and the second forging ejection piece, the rivet forming piece is prevented from being adhered to the upper forging press die, and the rivet forming piece is convenient to take.
The utility model avoids adhering the rivet forming part to the upper forging press die, facilitates the taking of the rivet forming part, avoids the working area of forging and pressing dies by hands of workers, improves the safety of the whole forging and pressing die, realizes automatic feeding and receiving, and reduces the labor intensity of workers.
Drawings
Fig. 1 is a schematic view of the overall structure of the present utility model.
Fig. 2 is a schematic diagram of a feeding driving motor structure of the present utility model.
Fig. 3 is a schematic structural view of the safety auxiliary mechanism of the utility model.
Fig. 4 is a schematic overall sectional structure of the present utility model.
Fig. 5 is a schematic diagram of the structure of the blanking slot of the present utility model.
In the figure, the correspondence between the component names and the drawing numbers is:
1. forging and pressing the base; 2. forging the mounting piece; 201. a guide hole; 202. a guide post; 3. a safety auxiliary mechanism; 301. a feeding driving motor; 302. a feeding driving shaft; 303. a feeding auxiliary turntable; 304. a placement groove; 305. an auxiliary support; 306. auxiliary blanking pieces; 307. discharging groove; 308. a discharge slide plate; 309. a discharge collection tank; 4. a press die is forged; 401. a first forging ejection groove; 402. a first swaged ejector; 403. a first swaged ejector spring; 5. a press die is forged downwards; 501. a second forging ejection groove; 502. a second swaged ejector; 503. a second swaged ejector spring; 6. and (5) forming a rivet.
Detailed Description
Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples.
Examples:
as shown in fig. 1 to 5:
the utility model provides a forging die of a hollow rivet, comprising: the forging and pressing machine comprises a forging and pressing base 1, a forging and pressing mounting piece 2, a safety auxiliary mechanism 3, a feeding driving motor 301, an upper forging and pressing die 4, a lower forging and pressing die 5 and a rivet forming piece 6;
the forging and pressing installation piece 2 is arranged above the forging and pressing base 1;
the safety auxiliary mechanism 3 is arranged above the forging base 1;
the feeding driving motor 301 is fixedly connected below the forging base 1;
the upper forging die 4 is fixedly connected below the forging mounting part 2;
the lower forging die 5 is fixedly connected above the forging base 1;
the rivet forming member 6 is disposed between the upper forging die 4 and the lower forging die 5.
Wherein, forging and pressing installed part 2 is including: a guide hole 201 and a guide post 202;
the three groups of guide holes 201 are arranged in total, and the three groups of guide holes 201 are respectively arranged above the forging base 1;
the guide posts 202 are provided with three groups, the three groups of guide posts 202 are respectively and fixedly connected below the forging and pressing mounting piece 2, and the positions of the three groups of guide posts 202 correspond to the positions of the guide holes 201 respectively, when in use, when the rivet forming piece 6 is forged and pressed, the forging and pressing mounting piece 2 moves downwards at the moment, the forging and pressing mounting piece 2 moves downwards to drive the guide posts 202 to move downwards, the guide posts 202 move downwards to enter the inside of the guide holes 201, the guide holes 201 realize the guide function of the forging and pressing mounting piece 2, and the three groups of guide posts 202 are provided, so that the rivet forming piece 6 is conveniently taken out.
The safety assistance mechanism 3 includes: a feeding driving shaft 302, a feeding auxiliary turntable 303 and a placing groove 304;
the feeding driving shaft 302 is rotatably connected to the right side above the forging base 1, and the lower end of the feeding driving shaft 302 is fixedly connected with the rotating shaft of the feeding driving motor 301 in a coaxial manner;
the feeding auxiliary turntable 303 is coaxially and fixedly connected above the feeding driving shaft 302;
the standing groove 304 is provided with the multiunit, multiunit standing groove 304 is circular hole structure, the top centrifugation department of carousel 303 is assisted in the material loading is all offered to the standing groove 304, and rivet shaping spare 6 is placed respectively in the inside of standing groove 304, in use, when needs carry out the material loading to rivet shaping spare 6, the workman can put into the inside of standing groove 304 with rivet shaping spare 6 this moment, then open material loading driving motor 301, material loading driving motor 301 rotates and drives material loading drive shaft 302 and rotate, material loading drive shaft 302 rotates and drives material loading auxiliary turntable 303 and rotate, material loading auxiliary turntable 303 rotates and drives the standing groove 304 and rotate, the material loading operation of rivet shaping spare 6 is realized in the rotation of standing groove 304, the work area that the workman's hand carried out the forging and pressing mould has been avoided, the security of whole forging and pressing mould has been improved.
Wherein, the safety auxiliary mechanism 3 further comprises: auxiliary support 305, auxiliary blanking member 306, blanking slot 307, discharging slide 308 and discharging collection slot 309;
the auxiliary supporting piece 305 is of a cylindrical structure, the auxiliary supporting piece 305 is fixedly connected to the right side above the forging base 1, and the auxiliary supporting piece 305 is arranged on the periphery of the feeding driving shaft 302;
the auxiliary blanking member 306 is fixedly connected above the auxiliary supporting member 305, and the auxiliary blanking member 306 is arranged below the feeding auxiliary turntable 303;
the blanking groove 307 is arranged on the left side of the auxiliary blanking piece 306, and the blanking groove 307 is of a semicircular structure;
the discharging slide plate 308 is fixedly connected to the front of the lower forging die 5;
the discharge collecting tank 309 is fixedly connected above the forging base 1, and the discharge collecting tank 309 is arranged below the discharge slide plate 308, in use, when the rivet forming piece 6 is required to be fed, a worker can put the rivet forming piece 6 into the inside of the placing tank 304, then the feeding driving motor 301 is turned on, the feeding driving motor 301 rotates to drive the feeding driving shaft 302 to rotate, the feeding driving shaft 302 rotates to drive the feeding auxiliary rotary table 303 to rotate, the feeding auxiliary rotary table 303 rotates to drive the placing tank 304 to rotate, the placing tank 304 rotates to drive the rivet forming piece 6 to rotate, when the rivet forming piece 6 rotates to the position of the blanking tank 307, the rivet forming piece 6 falls onto the upper side of the lower forging die 5, then the upper forging die 4 is controlled to forge the rivet forming piece 6 on the lower forging die 5, after the rivet forming piece 6 is forged and formed, the feeding auxiliary rotary table 303 continues to rotate, the rivet forming piece 6 is driven to fall onto the discharge slide plate 308, the rivet forming piece 6 enters the inside the discharge collecting tank 309 along the discharge slide plate 308, and the rivet forming piece 6 is collected by the discharging collecting tank 309.
Wherein, go up forging and pressing mould 4 including: a first swage ejection groove 401, a first swage ejection 402, and a first swage ejection spring 403;
the first forging ejection groove 401 is opened inside the upper forging die 4;
the first forging ejection piece 402 is slidably connected inside the first forging ejection groove 401, and the first forging ejection piece 402 is provided with a stopper structure;
the upper end of the first forging ejection spring 403 is fixedly connected with the upper end of the first forging ejection groove 401, the lower end of the first forging ejection spring 403 is fixedly connected with a limiting block of the first forging ejection piece 402, in use, when the rivet forming piece 6 is forged, the upper forging die 4 moves downwards to drive the first forging ejection piece 402 to move downwards, after the first forging ejection piece 402 moves downwards to be in contact with the rivet forming piece 6, the first forging ejection piece 402 slides upwards along the first forging ejection groove 401, the first forging ejection groove 401 slides upwards to compress the first forging ejection spring 403, after the rivet forming piece 6 is forged, under the action of the first forging ejection spring 403, the first forging ejection piece 402 realizes ejection of the rivet forming piece 6, the rivet forming piece 6 is prevented from being adhered to the upper forging die 4, and taking of the rivet forming piece 6 is facilitated.
Wherein, the lower forging die 5 comprises: a second swage ejection groove 501, a second swage ejection 502, and a second swage ejection spring 503;
the second forging ejection groove 501 is formed in the lower forging die 5;
the second forging ejection member 502 is slidably connected inside the second forging ejection slot 501, and the second forging ejection member 502 is provided with a stopper structure;
the lower extreme of second forging and pressing ejection spring 503 and the lower extreme fixed connection of second forging and pressing ejection groove 501, the stopper fixed connection of second forging and pressing ejection spring 503 upper end and second forging and pressing ejection 502, in use, when forging and pressing rivet shaping 6, go up forging mould 4 down and remove extrusion rivet shaping 6 this moment, rivet shaping 6 is extrudeed down and is removed, rivet shaping 6 down removes extrusion second forging and pressing ejection 502, second forging and pressing ejection 502 is extrudeed down and is removed, second forging and pressing ejection 502 moves down and compresses second forging and pressing ejection spring 503, after rivet shaping 6 forging and pressing is accomplished, under the effect of second forging and pressing ejection spring 503, second forging and pressing ejection 502 has realized the ejecting to rivet shaping 6.
Specific use and action of the embodiment:
first, when forging and pressing rivet forming piece 6, forging and pressing mounting piece 2 moves down this moment, and forging and pressing mounting piece 2 moves down and drives guide post 202 downwardly moving, and guide post 202 downwardly moving gets into the inside of guiding hole 201, and guiding hole 201 has realized the direction function to forging and pressing mounting piece 2, is provided with three guide posts 202 moreover, has made things convenient for taking out of rivet forming piece 6.
Then, when the rivet forming part 6 needs to be fed, a worker can put the rivet forming part 6 into the placing groove 304, then opens the feeding driving motor 301, the feeding driving motor 301 rotates to drive the feeding driving shaft 302 to rotate, the feeding driving shaft 302 rotates to drive the feeding auxiliary rotary table 303 to rotate, the feeding auxiliary rotary table 303 rotates to drive the placing groove 304 to rotate, the placing groove 304 rotates to drive the rivet forming part 6 to rotate, when the rivet forming part 6 rotates to the position of the blanking groove 307, the rivet forming part 6 falls above the blanking pressing mold 5, then the upper pressing mold 4 is controlled to forge the rivet forming part 6 on the blanking pressing mold 5, after the rivet forming part 6 is forged and formed, the feeding auxiliary rotary table 303 continues to rotate, the rivet forming part 6 is carried onto the discharging sliding plate 308, the rivet forming part 6 enters the inside of the discharging collecting groove 309 along the discharging sliding plate 308, and the discharging collecting groove 309 realizes collection of the rivet forming part 6.
Finally, when the rivet forming part 6 is forged, at this time, the upper forging die 4 moves downwards to drive the first forging ejection part 402 to move downwards, after the first forging ejection part 402 moves downwards to be in contact with the rivet forming part 6, the first forging ejection part 402 slides upwards along the first forging ejection groove 401, the first forging ejection groove 401 slides upwards to compress the first forging ejection spring 403, after the rivet forming part 6 is forged, under the action of the first forging ejection spring 403, ejection of the rivet forming part 6 is realized by the first forging ejection part 402, meanwhile, the upper forging die 4 moves downwards to extrude the rivet forming part 6, the rivet forming part 6 is extruded to move downwards, the rivet forming part 6 moves downwards to extrude the second forging ejection part 502, the second forging ejection part 502 moves downwards to compress the second forging ejection spring 503, and after the rivet forming part 6 is forged, ejection of the rivet forming part 6 is realized by the second forging ejection spring 503.
Claims (6)
1. A forging die for a blind rivet, comprising: the forging press comprises a forging press base (1), a forging press mounting piece (2), a safety auxiliary mechanism (3), a feeding driving motor (301), an upper forging press die (4), a lower forging press die (5) and a rivet forming piece (6); the forging and pressing installation piece (2) is arranged above the forging and pressing base (1); the safety auxiliary mechanism (3) is arranged above the forging base (1); the feeding driving motor (301) is fixedly connected below the forging base (1); the upper forging die (4) is fixedly connected below the forging mounting piece (2); the lower forging die (5) is fixedly connected above the forging base (1); the rivet forming piece (6) is arranged between the upper forging die (4) and the lower forging die (5).
2. A hollow rivet forging die as set forth in claim 1, wherein: the forging and pressing mounting piece (2) comprises: a guide hole (201) and a guide post (202); the three groups of guide holes (201) are arranged in total, and the three groups of guide holes (201) are respectively arranged above the forging base (1); the guide posts (202) are provided with three groups, the three groups of guide posts (202) are respectively and fixedly connected below the forging and pressing installation piece (2), and the positions of the three groups of guide posts (202) correspond to the positions of the guide holes (201).
3. A hollow rivet forging die as set forth in claim 1, wherein: the safety auxiliary mechanism (3) comprises: a feeding driving shaft (302), a feeding auxiliary rotary table (303) and a placing groove (304); the feeding driving shaft (302) is rotationally connected to the right side above the forging base (1), and the lower end of the feeding driving shaft (302) is fixedly connected with the rotating shaft of the feeding driving motor (301) in a coaxial manner; the feeding auxiliary turntable (303) is coaxially and fixedly connected above the feeding driving shaft (302); the placing grooves (304) are provided with a plurality of groups, the placing grooves (304) are of round hole structures, the placing grooves (304) are formed in centrifugal positions above the feeding auxiliary rotating disc (303), and the rivet forming pieces (6) are respectively placed in the placing grooves (304).
4. A hollow rivet forging die as set forth in claim 3, wherein: the safety auxiliary mechanism (3) further comprises: an auxiliary support (305), an auxiliary blanking member (306), a blanking groove (307), a blanking slide plate (308) and a blanking collecting groove (309); the auxiliary supporting piece (305) is of a cylindrical structure, the auxiliary supporting piece (305) is fixedly connected to the right side above the forging base (1), and the auxiliary supporting piece (305) is arranged on the periphery of the feeding driving shaft (302); the auxiliary blanking piece (306) is fixedly connected above the auxiliary supporting piece (305), and the auxiliary blanking piece (306) is arranged below the feeding auxiliary turntable (303); the blanking groove (307) is arranged on the left side of the auxiliary blanking piece (306), and the blanking groove (307) is of a semicircular structure; the discharging slide plate (308) is fixedly connected to the front of the lower forging die (5); the discharging collecting groove (309) is fixedly connected above the forging base (1), and the discharging collecting groove (309) is arranged below the discharging sliding plate (308).
5. A hollow rivet forging die as set forth in claim 1, wherein: the upper forging die (4) comprises: a first swage ejection groove (401), a first swage ejection (402), and a first swage ejection spring (403); the first forging ejection groove (401) is formed in the upper forging die (4); the first forging ejection piece (402) is connected inside the first forging ejection groove (401) in a sliding mode, and the first forging ejection piece (402) is provided with a limiting block structure; the upper end of the first forging ejection spring (403) is fixedly connected with the upper end of the first forging ejection groove (401), and the lower end of the first forging ejection spring (403) is fixedly connected with a limiting block of the first forging ejection piece (402).
6. A hollow rivet forging die as set forth in claim 1, wherein: the lower forging die (5) comprises: a second swage ejection groove (501), a second swage ejection (502), and a second swage ejection spring (503); the second forging ejection groove (501) is formed in the lower forging die (5); the second forging ejection piece (502) is slidably connected inside the second forging ejection groove (501), and the second forging ejection piece (502) is provided with a limiting block structure; the lower end of the second forging ejection spring (503) is fixedly connected with the lower end of the second forging ejection groove (501), and the upper end of the second forging ejection spring (503) is fixedly connected with a limiting block of the second forging ejection piece (502).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223481203.6U CN218963907U (en) | 2022-12-27 | 2022-12-27 | Forging and pressing mould of hollow rivet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223481203.6U CN218963907U (en) | 2022-12-27 | 2022-12-27 | Forging and pressing mould of hollow rivet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218963907U true CN218963907U (en) | 2023-05-05 |
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ID=86161681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223481203.6U Active CN218963907U (en) | 2022-12-27 | 2022-12-27 | Forging and pressing mould of hollow rivet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218963907U (en) |
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2022
- 2022-12-27 CN CN202223481203.6U patent/CN218963907U/en active Active
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