CN218903288U - Tab punching device with gasket feeding function - Google Patents
Tab punching device with gasket feeding function Download PDFInfo
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- CN218903288U CN218903288U CN202223361152.3U CN202223361152U CN218903288U CN 218903288 U CN218903288 U CN 218903288U CN 202223361152 U CN202223361152 U CN 202223361152U CN 218903288 U CN218903288 U CN 218903288U
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- die holder
- gasket
- punching
- seat
- lifting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses a lug punching device with a gasket feeding function, which comprises a gasket feeding mechanism, a die holder mechanism, a needle holder mechanism and a multi-station battery core feeding mechanism, wherein the gasket feeding mechanism and the needle holder mechanism are arranged in a front-back opposite mode and staggered up and down; two lug table tops are arranged on the punching die holder, corresponding gasket grooves are respectively arranged at the bottoms of the two lug table tops, and corresponding needle channels are respectively arranged at the bottoms of the two gasket grooves; the punching needle seat comprises two punching needles which respectively correspond to the two needle channels on the punching die seat. The lug punching device can complete lug punching and gasket feeding simultaneously.
Description
Technical Field
The utility model relates to battery production equipment, in particular to a lug punching device with a gasket feeding function.
Background
In the production process of the battery, the lug on the battery core and the terminal on the cover plate are required to be riveted and fixed by rivets, and before riveting, holes are required to be punched on the lug so as to facilitate the insertion of the rivets.
The patent number CN202022531817.5 discloses a battery lug punching device, which comprises a bottom plate, a frame, a die platform, a jig, an air cylinder and a punching mechanism, wherein the frame and the die platform are arranged on the upper surface of the bottom plate in a front-back arrangement manner, and the jig is arranged on the die platform; the upper end of the frame is provided with an air cylinder which is connected with a punching mechanism arranged at the upper part of the frame; the punching mechanism comprises a fixed plate, a punching cutter, a pressure spring and a pressing plate, wherein the upper end surface of the fixed plate is connected with the air cylinder, the lower end surface of the fixed plate is fixedly provided with the punching cutter, two sides of the punching cutter are respectively provided with a first telescopic guide pillar connected with the fixed plate, the first telescopic guide pillars are sleeved in the pressure spring, the lower ends of the first telescopic guide pillars are fixedly connected with the pressing plate, and the pressing plate is provided with a first through hole for the punching cutter to pass through; a base plate is arranged below the pressing plate and fixed on the bottom plate, and a second through hole corresponding to the first through hole is arranged on the base plate; two sides of the lower end face of the fixing plate are respectively provided with a second telescopic guide post, and the lower end of the second telescopic guide post is fixed on the lower end face of the frame.
However, in order to prevent the riveting force of the rivet from damaging the tab, an annular flexible gasket, such as a rubber gasket, is generally placed on the tab before the riveting, and after the riveting, the riveting force of the rivet acts on the flexible gasket, but does not directly act on the tab. At present, lug punching and gasket feeding are respectively completed on different stations by different devices, so that the efficiency is low, and the occupied position is large.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides the lug punching device with the gasket feeding function, which can complete lug punching and gasket feeding simultaneously.
The technical problems to be solved by the utility model are realized by the following technical scheme:
the lug punching device with the gasket feeding function comprises a gasket feeding mechanism, a die holder mechanism, a needle holder mechanism and a multi-station battery core feeding mechanism, wherein the gasket feeding mechanism and the needle holder mechanism are oppositely arranged front and back and staggered up and down;
the punching die holder is provided with two lug table tops, the bottoms of the two lug table tops are respectively provided with corresponding gasket grooves, the bottoms of the two gasket grooves are respectively provided with corresponding needle passages, and the punching die holder can enable the two gasket grooves and the two lug table tops to be aligned with the gasket feeding mechanism and the multi-station cell feeding mechanism in sequence through lifting;
the punching needle seat comprises two punching needles which respectively correspond to the two needle channels on the punching die seat, and the punching needle seat can enable the two punching needles to be respectively inserted into or separated from the two needle channels on the punching die seat through lifting.
The utility model has the following beneficial effects: the lug punching device sequentially completes gasket feeding and lug punching on the same station through a liftable punching die holder, the two gasket grooves are aligned with the gasket feeding mechanism through lifting, then the gasket feeding mechanism respectively feeds the two flexible gaskets into the two gasket grooves, the two lug table tops are aligned with the multi-station battery core feeding mechanism through lifting, then the multi-station battery core feeding mechanism respectively places positive and negative lugs on the battery core on the two lug table tops, finally the punching die holder descends to respectively pierce the positive and negative lugs on the two lug table tops through two punching needles, and then the punching needles are inserted into two needle channels on the punching die holder after penetrating through the inner holes of the two flexible gaskets.
Drawings
Fig. 1 is a schematic structural diagram of a tab punching device provided by the utility model;
fig. 2 is a schematic structural view of a die holder mechanism and a needle holder mechanism in the tab punching device provided by the utility model;
fig. 3 is a schematic structural diagram of a punching die holder in the tab punching device provided by the utility model;
fig. 4 is a schematic plan view of the tab punching device provided by the utility model.
Detailed Description
The present utility model is described in detail below with reference to the drawings and the embodiments, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, or can be communicated between two elements or the interaction relationship between the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
As shown in fig. 1-3, the lug punching device with the gasket feeding function comprises a gasket feeding mechanism 1, a die holder mechanism 2, a needle holder mechanism 3 and a multi-station battery core feeding mechanism (not shown in the figure), wherein the gasket feeding mechanism 1 and the needle holder mechanism 3 are arranged in a front-back opposite mode and staggered up and down, the die holder mechanism 2 comprises a liftable punching die holder 21, the needle holder mechanism 3 comprises a liftable punching needle 311 seat 31, and the punching needle 311 seat 31 and the punching die holder 21 are arranged in a vertically opposite mode;
two lug table boards 211 are arranged on the punching die holder 21, corresponding gasket grooves 212 are respectively arranged at the bottoms of the two lug table boards 211, corresponding needle channels 213 are respectively arranged at the bottoms of the two gasket grooves 212, and the punching die holder 21 can enable the two gasket grooves 212 and the two lug table boards 211 to be aligned with the gasket feeding mechanism 1 and the multi-station battery cell feeding mechanism in sequence through lifting;
the punching needle 311 seat 31 includes two punching needles 311, which correspond to the two needle channels 213 on the punching die holder 21, and the punching needle 311 seat 31 can make the two punching needles 311 respectively insert into or leave the two needle channels 213 on the punching die holder 21 by lifting.
The lug punching device sequentially completes gasket feeding and lug punching on the same station through a liftable punching die holder 21, the punching die holder 21 enables two gasket grooves 212 to be aligned with the gasket feeding mechanism 1 through lifting, then the gasket feeding mechanism 1 respectively sends two flexible gaskets into the two gasket grooves 212, the two lug table tops 211 are aligned with the multi-station battery core feeding mechanism through lifting, then the multi-station battery core feeding mechanism respectively places positive and negative lugs on the battery core 100 on the two lug table tops 211, finally the punching needle 311 is lowered to enable the two punching needles 311 to respectively pierce the positive and negative lugs on the two lug table tops 211, and then the punching needle 311 penetrates through inner holes of the two flexible gaskets and then is inserted into the two needle channels 213 on the punching die holder 21.
The multi-station cell feeding mechanism is generally a multi-station turntable, and the cell 100 is driven to be processed on each station sequentially through rotation.
The punching die holder 21 is formed with a spacer 214 protruding between the two tab lands 211 to separate the positive and negative tabs on the two tab lands 211.
The die holder mechanism 2 further comprises a die holder lifting assembly 22, the punching die holder 21 is arranged on the die holder lifting assembly 22, and is driven by the die holder lifting assembly 22 to lift; the die holder lifting assembly 22 comprises a die holder fixing seat 221, a die holder lifting guide rail 222, a die holder lifting seat 223 and a lifting driving structure, wherein the die holder lifting guide rail 222 is arranged on the die holder fixing seat 221 along the vertical direction, the die holder lifting seat 223 is slidably arranged on the die holder lifting guide rail 222, and the lifting driving structure is connected with and drives the die holder lifting seat 223 to slide and lift on the die holder lifting guide rail 222; the punching die holder 21 is disposed on the die holder lifting base 223.
The lifting driving structure comprises a hub 224 and a traversing element 225 which are oppositely arranged, and the rotation axial direction of the hub 224 is perpendicular to the traversing direction of the traversing element 225; a boss 226 abutting against the hub 224 is formed on one surface of the traverse member 225 facing the hub 224 in a protruding manner, the boss 226 is provided with a lifting inclined plane, and the inclination direction of the lifting inclined plane is parallel to the traverse direction of the traverse member 225; the hub 224 is rotatably connected to the die holder lifting seat 223, and the traverse member 225 is movably disposed on the die holder fixing seat 221.
During the traversing process of the traversing element 225, the hub 224 may rise from the bottom of the boss 226 to the top of the boss 226 via the lifting slope, so as to raise the die holder lifting seat 223, or fall from the top of the boss 226 to the bottom of the boss 226, so as to lower the die holder lifting seat 223.
The lifting driving structure further comprises a traversing driver 227, a first connecting shaft 228 and a second connecting shaft 229, wherein the first connecting shaft 228 is parallel to the traversing direction of the traversing element 225, and the second connecting shaft 229 is perpendicular to the traversing direction of the traversing element 225; a sliding groove 2210 for accommodating the traversing element 225 is arranged on the die holder fixing seat 221, and a connecting hole 2211 extending along the moving direction of the traversing element 225 is arranged on the groove wall of the sliding groove 2210; the second connecting shaft 229 is disposed in the connecting hole 2211, one end of the second connecting shaft is vertically connected to the traverse 225, and the other end is vertically connected to the first connecting shaft 228; the traversing driver 227 is coupled to drive the first link 228 to move in its axial direction.
Two gasket grooves 212 of the punching die holder 21 are formed with corresponding gasket inlets towards one side of the gasket feeding mechanism 1; the die holder mechanism 2 further comprises a baffle assembly 23 which can be lifted and lowered together with the punching die holder 21, the baffle assembly 23 comprises a transversely movable inlet baffle 231, the inlet baffle 231 is positioned on one side of the gasket inlet of the punching die holder 21, and the gasket inlet of the punching die holder 21 can be blocked or opened through transverse movement.
The baffle assembly 23 further comprises a baffle fixing seat 232 and a baffle driver 233, the baffle fixing seat 232 is arranged on the die holder lifting seat 223, and the baffle driver 233 is arranged on the baffle fixing seat 232 and is connected with and drives the inlet baffle 231 to transversely move.
The needle seat mechanism 3 further comprises a needle seat driving component 32, and the needle seat driving component 32 is connected to drive the punching needle 311 seat 31 to lift, so that two punching needles 311 are respectively inserted into or separated from two needle channels 213 on the punching die holder 21.
The needle seat mechanism 3 further comprises a die seat pressing head 33 and a pressing head lifting assembly 34, and the pressing head lifting assembly 34 is connected to drive the die seat pressing head 33 to lift, so that the die seat pressing head 33 is pressed on the two lug table tops 211 of the punching die seat 21.
When punching, the die holder pressing head 33 is driven by the pressing head lifting assembly 34 to descend firstly, so that the die holder pressing head 33 is pressed on two lug table boards 211 of the punching die holder 21, so that two lugs on the punching die holder 21 are pressed, and then the needle holder driving assembly 32 drives the punching needle 311 seat 31 to descend again, so that two punching needles 311 on the punching needle 311 seat 31 are respectively inserted into two needle channels 213 on the punching die holder 21, so that two lugs on the punching die holder 21 are pierced; after the hole is punched, the needle seat driving component 32 drives the hole punching needle 311 seat 31 to lift, so that two hole punching needles 311 on the hole punching needle 311 seat 31 are separated from two needle channels 213 on the hole punching die holder 21 respectively, and then the die holder pressing head 33 is driven to lift by the pressing head lifting component 34, so that the die holder pressing head 33 is separated from the hole punching die holder 21.
The ram lifting assembly 34 comprises a ram fixed support 341, a ram lifting guide rail 342, a ram lifting seat 343 and a ram lifting driver 344, wherein the ram lifting guide rail 342 is arranged on the ram fixed support 341 along the vertical direction, the ram lifting seat 343 is slidably arranged on the ram lifting guide rail 342, and the ram lifting driver 344 is connected to drive the ram lifting seat 343 to slide and lift on the ram lifting guide rail 342; the punch pin 311 seat 31 and the needle seat driving assembly 32 are disposed on the ram elevating seat 343.
The needle seat driving assembly 32 comprises a needle seat fixing bracket 321, a needle seat lifting guide rail 322, a needle seat lifting seat 323 and a needle seat lifting driver 324, wherein the needle seat fixing bracket 321 is arranged on the pressure head fixing bracket 341, the needle seat lifting guide rail 322 is arranged on the needle seat fixing bracket 321 along the vertical direction, the needle seat lifting seat 323 is slidably arranged on the needle seat lifting guide rail 322, and the needle seat lifting driver 324 is connected with and drives the needle seat lifting seat 323 to slide and lift on the needle seat lifting guide rail 322; the punching needle 311 seat 31 is disposed on the needle seat lifting seat 323.
Two punching pins 311 are axially movably inserted into the die holder ram 33.
The pressure head fixing bracket 341 comprises two upright posts and two cross beams, the two upright posts are respectively arranged on two sides of the gasket feeding mechanism 1, the two cross beams span over the gasket feeding mechanism 1, and two ends of the two cross beams are respectively connected with the two upright posts; the needle seat fixing support 321 is located between the two cross beams and fixed with the two upright posts.
Example two
As an implementation and optimization scheme, in this embodiment, as shown in fig. 1, the tab punching device further includes two sensors 4, where when the two gasket grooves 212 of the punching die holder 21 are aligned with the gasket feeding mechanism 1, the two sensors 4 are aligned with the two gasket grooves 212 on the punching die holder 21, respectively.
The two sensors 4 are arranged on the pressure head fixing bracket 341, are respectively positioned at the left side and the right side of the punching needle 311 seat 31, are inclined at a certain angle, are respectively aligned with the two gasket grooves 212 on the punching die holder 21, and are used for sensing whether the flexible gaskets exist in the two gasket grooves 212; when the two sensors 4 sense that the flexible gaskets are not in the two gasket grooves 212, the baffle assembly 23 is triggered to move the inlet baffle 231 away so as to open the gasket inlets of the two gasket grooves 212, and the gasket feeding mechanism 1 is allowed to feed the flexible gaskets into the two gasket grooves 212; when the two sensors 4 sense that the flexible gaskets are in the two gasket grooves 212, the baffle assembly 23 is triggered to move the inlet baffle 231 in so as to block the gasket inlets of the two gasket grooves 212, and the gasket feeding mechanism 1 is prevented from feeding the flexible gaskets into the two gasket grooves 212.
Example III
As an optimization scheme for implementing the first or the second embodiment, in this embodiment, the gasket feeding mechanism 1 has one or two feeding channels, and one feeding channel only allows feeding of one flexible gasket at a time; if the gasket feeding mechanism 1 has a feeding channel, the punching die holder 21 may also be moved laterally, and when the gasket grooves 212 on the punching die holder 21 are aligned with the gasket feeding mechanism 1, the punching die holder 21 moves laterally to enable two gasket grooves 212 to be aligned with the feeding channel in sequence; if the gasket feeding mechanism 1 has two feeding channels, when the gasket grooves 212 on the punching die holder 21 are aligned with the gasket feeding mechanism 1, the two gasket grooves 212 are aligned with the corresponding feeding channels respectively.
Therefore, if the gasket feeding mechanism 1 has a feeding channel, the die holder mechanism 2 further includes a die holder traversing assembly, the punching die holder 21 is disposed on the die holder traversing assembly, and is driven by the die holder traversing assembly to traverse.
As shown in fig. 4, the gasket feeding mechanism 1 comprises a vibration disc 11 and a direct vibration table 12, the direct vibration table 12 is connected between the vibration disc 11 and the die holder mechanism 2, and the feeding channel is arranged on the direct vibration table 12; if the gasket feeding mechanism 1 has two feeding channels, the vibrating disc 11 and the straight vibrating table 12 have two sets, one set of vibrating disc 11 and straight vibrating table 12 corresponds to one feeding channel, or only one set of vibrating disc 11 and straight vibrating table 12 is provided, and the straight vibrating table 12 is simultaneously provided with two feeding channels.
Finally, it should be noted that the foregoing embodiments are merely for illustrating the technical solution of the embodiments of the present utility model and are not intended to limit the embodiments of the present utility model, and although the embodiments of the present utility model have been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the embodiments of the present utility model may be modified or replaced with the same, and the modified or replaced technical solution may not deviate from the scope of the technical solution of the embodiments of the present utility model.
Claims (10)
1. The lug punching device with the gasket feeding function is characterized by comprising a gasket feeding mechanism, a die holder mechanism, a needle holder mechanism and a multi-station battery core feeding mechanism, wherein the gasket feeding mechanism and the needle holder mechanism are oppositely arranged front and back and staggered up and down;
the punching die holder is provided with two lug table tops, the bottoms of the two lug table tops are respectively provided with corresponding gasket grooves, the bottoms of the two gasket grooves are respectively provided with corresponding needle passages, and the punching die holder can enable the two gasket grooves and the two lug table tops to be aligned with the gasket feeding mechanism and the multi-station cell feeding mechanism in sequence through lifting;
the punching needle seat comprises two punching needles which respectively correspond to the two needle channels on the punching die seat, and the punching needle seat can enable the two punching needles to be respectively inserted into or separated from the two needle channels on the punching die seat through lifting.
2. The tab punching device with the gasket feeding function according to claim 1, wherein the die holder mechanism further comprises a die holder lifting assembly, the punching die holder is arranged on the die holder lifting assembly, and the punching die holder is driven to lift by the die holder lifting assembly.
3. The tab punching device with the gasket feeding function according to claim 2, wherein the die holder lifting assembly comprises a die holder fixing seat, a die holder lifting guide rail, a die holder lifting seat and a lifting driving structure, the die holder lifting guide rail is arranged on the die holder fixing seat along the vertical direction, the die holder lifting seat is slidably arranged on the die holder lifting guide rail, and the lifting driving structure is connected with and drives the die holder lifting seat to slide and lift on the die holder lifting guide rail; the punching die holder is arranged on the die holder lifting seat.
4. The tab punching device with the gasket feeding function according to claim 3, wherein the lifting driving structure comprises a hub and a traversing element which are oppositely arranged, and the rotating axial direction of the hub is perpendicular to the traversing direction of the traversing element; a boss which is propped against the hub is formed on one surface of the traversing piece facing the hub in a protruding way, the boss is provided with a lifting inclined plane, and the inclination direction of the lifting inclined plane is parallel to the traversing direction of the traversing piece; the hub is rotatably connected to the die holder lifting seat, and the traversing piece is movably arranged on the die holder fixing seat.
5. The tab punching device with the gasket feeding function according to claim 4, wherein the lifting driving structure further comprises a traversing driver, a first connecting shaft and a second connecting shaft, the first connecting shaft is parallel to the traversing direction of the traversing member, and the second connecting shaft is perpendicular to the traversing direction of the traversing member; the die holder fixing seat is provided with a chute for accommodating the traversing element, and the wall of the chute is provided with a connecting hole extending along the moving direction of the traversing element; the second connecting shaft is arranged in the connecting hole, one end of the second connecting shaft is vertically connected with the transverse moving piece, and the other end of the second connecting shaft is vertically connected with the first connecting shaft; the transverse moving driver is connected with and drives the first connecting shaft to move along the axial direction of the first connecting shaft.
6. The tab punching device with the gasket feeding function according to claim 1, wherein two gasket grooves of the punching die holder are formed with corresponding gasket inlets towards one side of the gasket feeding mechanism; the die holder mechanism further comprises a baffle plate assembly which can be lifted along with the punching die holder, the baffle plate assembly comprises an inlet baffle plate capable of transversely moving, the inlet baffle plate is positioned on one side of a gasket inlet of the punching die holder, and the gasket inlet of the punching die holder can be blocked or opened through transversely moving.
7. The tab punch apparatus with gasket feed function of claim 6, further comprising two sensors aligned with the two gasket grooves on the punch die holder, respectively, when the two gasket grooves of the punch die holder are aligned with the gasket feed mechanism.
8. The tab punch apparatus with gasket feed function of claim 1, wherein the hub mechanism further comprises a hub drive assembly that is operatively coupled to drive the punch hub to raise and lower the punch hub to insert or remove two punch pins from the two pin channels of the punch die holder, respectively.
9. The tab punching device with the gasket feeding function according to claim 1 or 8, wherein the needle seat mechanism further comprises a die seat pressing head and a pressing head lifting assembly, and the pressing head lifting assembly is connected to drive the die seat pressing head to lift so that the die seat pressing head is pressed on two tab tops of the punching die seat.
10. The tab punching device with a gasket feeding function according to claim 1, wherein the gasket feeding mechanism is provided with one or two feeding channels, and one feeding channel only allows feeding of one flexible gasket at a time; if the gasket feeding mechanism is provided with a feeding channel, the punching die holder can also transversely move, and when gasket grooves on the punching die holder are aligned with the gasket feeding mechanism, the punching die holder can enable two gasket grooves to be aligned with the feeding channel in sequence through transversely moving; if the gasket feeding mechanism is provided with two feeding channels, when gasket grooves on the punching die holder are aligned with the gasket feeding mechanism, the two gasket grooves are respectively aligned with the corresponding feeding channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223361152.3U CN218903288U (en) | 2022-12-12 | 2022-12-12 | Tab punching device with gasket feeding function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223361152.3U CN218903288U (en) | 2022-12-12 | 2022-12-12 | Tab punching device with gasket feeding function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218903288U true CN218903288U (en) | 2023-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223361152.3U Active CN218903288U (en) | 2022-12-12 | 2022-12-12 | Tab punching device with gasket feeding function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218903288U (en) |
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2022
- 2022-12-12 CN CN202223361152.3U patent/CN218903288U/en active Active
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