CN219188296U - Positioning tool for punching metal plate - Google Patents
Positioning tool for punching metal plate Download PDFInfo
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- CN219188296U CN219188296U CN202223374227.1U CN202223374227U CN219188296U CN 219188296 U CN219188296 U CN 219188296U CN 202223374227 U CN202223374227 U CN 202223374227U CN 219188296 U CN219188296 U CN 219188296U
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- lower die
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Punching Or Piercing (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The utility model relates to the technical field of sheet metal part machining, in particular to a positioning tool for punching a metal plate part. The positioning tool for punching the metal plate is inserted into a lower die through the metal plate, and the lower die transversely positions the metal plate; the supporting seat is abutted to the lower part of the metal plate; the limiting block is abutted against one side of the metal plate; the support roller is abutted to one end of the metal plate part far away from the lower die, and the support roller and the metal plate part are mutually cooperated to position the metal plate part. Finally, whether the positioning is accurate or not is judged by the reference plate, so that the positioning tool for punching the metal plate can position the long metal plate in the middle, and the movement of the metal plate is reduced and the punching precision is increased during punching.
Description
Technical Field
The utility model relates to the technical field of sheet metal part machining, in particular to a positioning tool for punching a metal plate part.
Background
Punching is a more applied way in the production of metal pieces, which is typically done by punching. The general punch press includes upper punch press, drift, lower punch press and die holder, and the drift sets up on the upper punch press, and the die holder sets up on the lower punch press, has seted up the nib on the die holder. When punching, the metal plate is placed on the lower die holder, the punch of the upper punch is matched with the die hole of the lower die holder of the lower punch after the upper punch falls down, and the metal plate is punched through and a perforation is formed.
Referring to fig. 1, a metal plate 1 in the related art is provided with a through hole 11 and a plugging slot 12. However, the applicant has found that when it is desired to punch through the metal sheet 1 and form the perforations 11, one end of the metal sheet 1 is secured by the insertion slot 12, but if the other end of the metal sheet 1 is not supported effectively in the length direction, the position of the perforations 11 on the metal sheet 1 will deviate once the metal sheet is displaced.
Disclosure of Invention
In order to solve the problem that the hollow long metal plate part cannot be effectively supported in the length direction to cause punching deviation during punching, the application provides a positioning tool for punching of the metal plate part.
The application provides a metal sheet spare punches a hole and uses location frock adopts following technical scheme:
the positioning tool for punching the metal plate comprises a lower die provided with a die hole and a supporting roller assembly, wherein the lower die is arranged on a lower die seat below a punch of a punching machine and is used for supporting one end of the metal plate, and the supporting roller assembly is used for supporting the other end of the metal plate;
the supporting roller assembly comprises a supporting roller support, a supporting roller and a supporting roller connecting plate, wherein the supporting roller connecting plate is arranged on the punching machine, the supporting roller support is arranged on the supporting roller connecting plate, the supporting roller is arranged on the supporting roller support, and the supporting roller is used for supporting one end, far away from the lower die, of the metal plate.
By adopting the technical scheme, when the metal plate piece is inserted into the lower die, the outer surface of the lower die is abutted against the inner cavity surface of the metal plate piece, and the lower die positions the metal plate piece; and meanwhile, one end of the metal plate part far away from the lower die is abutted against the upper surface of the supporting roller, and the metal plate part is positioned at one end far away from the lower die in the length direction. The metal plate piece is positioned through the lower die and the supporting roller, so that the positioning tool can position the long metal plate piece, and when the punch of the upper punch is matched with the die hole of the lower die to punch, the movement of the metal plate piece is reduced, and the punching precision is further increased.
Optionally, the support roller is rotated on a support roller bracket.
Through adopting above-mentioned technical scheme, the backing roll rotates to set up on the backing roll support, and at the in-process of metal plate spare grafting in the bed die, when metal plate spare contacted and slipped with the backing roll, the backing roll rotated and is connected can reduce the friction of backing roll to metal plate spare, and then reduces the scratch of backing roll to metal plate spare surface.
Optionally, the lower die holder is detachably connected to the lower punch; the supporting roller assembly further comprises an up-down lifting piece, the up-down lifting piece is connected to the supporting roller connecting plate, the supporting roller bracket is arranged on the up-down lifting piece, and the up-down lifting piece is used for adjusting the supporting roller up and down.
By adopting the technical scheme, the lower die holder corresponding to the punch of the upper punch can be replaced along with the replacement of the punch of the upper punch according to different requirements, so that the punch is suitable for more punching production conditions; the supporting roller can adjust different heights through the up-down lifting piece, and then is inserted into different metal plate pieces on the die holder to position.
Optionally, the up-down lifting piece comprises a driving sprocket, a driven sprocket, a chain, a connecting shaft, a motor and a sprocket support, wherein the driving sprocket and the driven sprocket are both rotatably connected to the sprocket support, and the chain is meshed with the driving sprocket and the driven sprocket; one end of the connecting shaft is fixedly connected to the output end of the motor, the connecting shaft penetrates through the chain wheel support and is fixedly connected with the driving chain wheel, and the connecting shaft rotates on the chain wheel support; the support roller support is fixedly arranged on the chain, and the sprocket support is fixedly arranged on the support roller connecting plate.
Through adopting above-mentioned technical scheme, the motor passes through the driving shaft and makes the sprocket rotatory, and the sprocket makes the chain rotatory, and then drives the backing roll and reciprocate, and whole regulation structure is simple high-efficient.
Optionally, the lower die is provided with a plugging strip, the plugging strip is plugged in a plugging groove of the metal plate, and the plugging strip is used for positioning the metal plate plugged on the lower die.
By adopting the technical scheme, the plugging strip and the plugging groove are matched with each other to transversely position the metal plate.
Optionally, the positioning tool for punching the metal plate part further comprises a supporting seat, wherein the supporting seat is arranged on the lower die base and is used for supporting the metal plate part inserted on the lower die.
By adopting the technical scheme, the surface of the supporting seat, which is close to the lower die, is inserted on the metal plate piece, and the metal plate piece is supported and positioned upwards.
Optionally, the lower die holder further comprises a supporting seat, the supporting seat is arranged on the lower die holder and is used for positioning the metal plate inserted on the lower die.
Optionally, the height of the reference plate is higher than the height of the metal plate inserted on the die.
Through adopting above-mentioned technical scheme, the reference board is used for judging whether accurate a reference of metal sheet spare location, if the location is not accurate enough, can adjust the metal sheet spare, until accord with the reference standard, and then promotes the accuracy of the location of location frock.
Optionally, the metal plate spare is punched a hole and is used location frock still includes side setting element, side setting element includes sliding part and rotation portion, sliding groove and rotation groove have been seted up to the die holder, sliding groove and rotation groove set up the direction the same and the intercommunication, sliding part slides in sliding groove, rotation portion threaded connection is in rotation inslot, rotation portion and sliding part butt, the rotation of rotation portion is used for promoting sliding part to the direction motion that is close to the bed die, and then promotes sliding part and the metal plate spare butt of grafting on the bed die.
Through adopting above-mentioned technical scheme, rotation portion rotates and makes the portion of sliding and the metal sheet spare butt of grafting on the bed die, fixes a position the metal sheet spare from different directions, and then makes the metal sheet spare punch a hole and use location frock more accurate to the metal sheet spare location.
Optionally, the sliding part comprises a sliding block, a limiting block and a supporting spring; the sliding block slides in the sliding groove; the limiting block is connected to one end of the sliding block and is used for positioning a metal plate inserted into the lower die;
one end of the supporting spring is abutted against the bottom of the rotating groove, and the other end of the supporting spring is abutted against one surface of the sliding block; the rotating part is abutted to the other surface of the sliding block, and the supporting spring is used for promoting the sliding block to be abutted to the rotating part.
Through adopting above-mentioned technical scheme, rotatory rotation portion makes the slider to be close to one side of bed die and remove, and the stopper slides on the surface of connecting block and with the metal plate spare butt of grafting on the bed die, fixes a position the metal plate spare from different directions, and then makes location frock more accurate to the metal plate spare location.
The sliding block is always abutted against the rotating part by the support spring, so that a certain gap is kept between the lower die and the limiting block, and the metal plate component is conveniently inserted into the lower die.
Optionally, the side positioning piece further comprises a fixing part, wherein the fixing part comprises a fixing block and a fixing groove, the fixing groove is formed in the lower die holder, and the fixing groove and the sliding groove are formed in the same direction and are communicated; the fixed block is connected to one side, far away from the limiting block, of the sliding block, the fixed block slides in the fixed groove, and the fixed block is used for limiting the sliding block.
Through adopting above-mentioned technical scheme, set up fixed block and fixed slot and make the structure of sliding block and stopper more stable, and then make the stopper more stable to the location of metal plate spare.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the positioning tool for punching the metal plate is inserted on the lower die through the metal plate, supports the metal plate and reduces the transverse movement of the metal plate; the support roller is arranged to support one end of the metal plate part far away from the lower die, so that the positioning tool for punching the metal plate part can position the long metal plate part, and further punching accuracy is improved.
2. The lower die is provided with a plug strip, the plug strip is plugged in a plug groove of the metal plate piece, the plug strip is used for positioning the metal plate piece plugged on the lower die, and the plug strip and the plug groove are matched with each other to transversely position the metal plate piece.
3. The positioning tool for punching the metal plate also comprises a reference plate, wherein the reference plate is arranged on the supporting roller connecting plate and is used as a reference for judging whether the metal plate is positioned accurately or not, punching is carried out according with a reference standard, and the accuracy of punching positioning is further improved.
Drawings
FIG. 1 is a schematic view of a hollow long metal plate;
FIG. 2 is a schematic structural diagram of a positioning tool for punching metal plate in embodiment 1;
fig. 3 is a schematic structural view of the ascending and descending member of embodiment 1;
FIG. 4 is a schematic structural diagram of a positioning tool for punching metal plate in embodiment 2;
fig. 5 is an enlarged schematic view of section a of embodiment 2;
FIG. 6 is an exploded view of the side retainer of example 2;
FIG. 7 is an enlarged schematic view of section B of example 2;
reference numerals illustrate: 1. a metal plate; 2. a lower die holder; 3. a lower die; 4. a backup roll assembly; 5. a support base; 6. a side positioning member; 7. a reference plate; 11. perforating; 12. a plug-in groove; 31. a plug strip; 21. a slip groove; 22. a rotating groove; 41. a backup roll support; 42. a support roller; 43. a support roller connecting plate; 44. an up-down lifting member; 441. a drive sprocket; 442. a driven sprocket; 443. a chain; 444. a connecting shaft; 445. a motor; 446. a sprocket support; 61. a sliding part; 62. a rotating part; 63. a fixing part; 611. a sliding block; 612. a limiting block; 613. a support spring; 621. cylindrical head screw; 631. a fixed block; 632. a fixing groove.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-7.
The embodiment of the application discloses a metal plate piece punches a hole and uses location frock.
Example 1
Referring to fig. 1 and 2, a positioning tool for punching metal plate comprises a lower die holder 2, a lower die 3 provided with a die hole, a supporting roller assembly 4, a supporting seat 5 and a reference plate 7. The lower die 3 is arranged on the lower die holder 2, and the lower die 3 is used for inserting the hollow metal plate 1; the lower die holder 2 is detachably connected to the lower punch, the lower die holder 2 is arranged on the lower punch and is positioned below a punch of the upper punch, the supporting seat 5 is arranged on the lower die holder 2, and the supporting seat 5 is used for supporting the metal plate 1; the supporting roller assembly 4 is arranged on the lower punch and is used for positioning one end of the metal plate 1 far away from the lower die 3; the reference plate 7 is disposed on the support roller assembly 4 and is used for determining whether the metal plate 1 is positioned accurately.
The lower die 3 is provided with a plugging strip 31, when the metal plate component 1 is plugged on the lower die 3, the plugging strip 31 is plugged in the plugging groove 12 on the metal plate component 1, and the plugging strip 31 is abutted against the groove wall of the plugging groove 12.
The backup roller assembly 4 includes a backup roller bracket 41, a backup roller 42, an up-down member 44, and a backup roller connection plate 43.
The supporting roller 42 rotates on the supporting roller bracket 41, the supporting roller bracket 41 is arranged on the upper and lower lifting pieces 44, the upper and lower lifting pieces 44 are connected to the supporting roller connecting plate 43, the supporting roller connecting plate 43 is arranged on one side of the lower punch close to the lower die 3, and the upper and lower lifting pieces 44 are used for lifting the supporting roller 42 up and down, so that the supporting roller 42 supports and positions one ends of the metal plate pieces 1 with different heights far away from the lower die 3.
Referring to fig. 3, the up-down lifting member 44 includes two driving sprockets 441, two driven sprockets 442, two sprocket holders 446, two chains 443, a connecting shaft 444 and a motor 445, one driving sprocket 441 and one driven sprocket 442 are rotatably connected to two ends of the sprocket holders 446, two ends of the chain 443 are respectively engaged with the driving sprocket 441 and the driven sprocket 442 of the same sprocket holder 446, the two driving sprockets 441 are oppositely disposed, the connecting shaft 444 penetrates and rotates the two sprocket holders 446 and is fixedly connected with the two driving sprockets 441 on the sprocket holders 446, two ends of the supporting roller holder 41 are fixedly disposed on the two chains 443, and the motor 445 rotates to drive the driving sprocket 441 to rotate, thereby adjusting the supporting roller 42 up and down.
In other embodiments, the lifting member 44 may be a belt transmission mechanism, and the support roller bracket 41 is fixed to the belt and moves up and down as the belt rotates.
In other embodiments, the up-and-down member 44 may not be provided, and the support roller bracket 41 is fixed and connected directly to the lower punch without changing the height of the support roller 42 when supporting the metal plate 1 on the designated lower die holder 2.
In other embodiments, the support roller 42 may be directly fixedly connected to the support roller bracket 41, or may support the metal plate 1.
The supporting seat 5 is arranged on the lower die holder 2, the surface of the supporting seat 5 close to the lower die 3 is abutted against the metal plate 1, and the supporting seat 5 supports the metal plate 1 inserted on the lower die 3.
In other embodiments, the support base 5 may not be provided.
The reference plate 7 is arranged on the support roller connecting plate 43, the height of the reference plate 7 is higher than that of the metal plate 1 inserted on the die, and when the metal plate 1 is inserted on the lower die 3, the side edge of the metal plate 1 is abutted with the reference plate 7, so that the metal plate 1 is accurately positioned.
In other embodiments, the reference plate 7 may not be provided.
In other embodiments, the height of the reference plate 7 may be no higher than the height of the metal plate 1 inserted on the mold.
Example 2
Referring to fig. 4 and 5, the difference between the present embodiment 2 and embodiment 1 is that the positioning tool for punching metal plate further includes a side positioning member 6, and the side positioning member 6 includes a sliding portion 61, a rotating portion 62, and a fixing portion 63.
Referring to fig. 6 and 7, the sliding portion 61 includes a sliding block 611, a stopper 612, and a supporting spring 613; the rotating part 62 is a cylindrical head screw 621; the fixing portion 63 includes a fixing block 631 and a fixing groove 632, the fixing groove 632 is formed on the lower die holder 2, and the fixing block 631 and the limiting block 612 are respectively connected to two sides of the sliding block 611.
The lower die holder 2 is provided with a sliding groove 21 and a rotating groove 22, and the sliding groove 21 and the rotating groove 22 are arranged in the same direction and are communicated; the sliding groove 21 and the fixed groove 632 are arranged in the same direction and communicated.
The sliding block 611 slides in the sliding groove 21, the cylindrical head screw 621 is in threaded connection with the rotating groove 22, the fixed block 631 slides in the fixed groove 632, one end of the supporting spring 613 is abutted against the bottom of the rotating groove 22, the other end of the supporting spring 613 is abutted against one surface of the sliding block 611, the end of the cylindrical head screw 621 is abutted against the other surface of the sliding block 611, and the supporting spring 613 urges the sliding block 611 to be abutted against the end of the cylindrical head screw 621.
The rotation of the cylindrical head screw 621 drives the sliding block 611 to move towards the direction approaching to the lower die 3, so that the limiting block 612 is driven to abut against and position the metal plate 1 inserted on the lower die 3.
The height of the fixed block 631 is greater than that of the sliding block 611, and the fixed block 631 limits the sliding block 611, so that the structures of the sliding block 611 and the limiting block 612 are more stable, and the limiting block 612 is more stable in positioning the metal plate 1.
In other embodiments, the side positioning members 6 may not be provided.
In other embodiments, the side positioning member 6 may be a screw structure.
In other embodiments, the fixed block 631 may not be provided.
In this embodiment, the above-mentioned installation, setting and connection may be performed according to conventional connection methods such as integral molding, adhesive bonding, threaded connection, snap connection or hot melt molding; the detachable connection can be realized by adopting a conventional connection mode such as threaded connection or snap connection according to actual selection.
The implementation principle of the positioning tool for punching the metal plate part of the embodiment of the application is as follows: the metal plate 1 is inserted on the lower die 3, and the surface, close to the lower die 3, of the supporting seat 5 is abutted on the metal plate 1; the cylindrical head screw 621 is rotated to enable the limiting block 612 to be abutted against the metal plate 1, and the motor 445 is started to adjust the height of the supporting roller 42, so that the metal plate 1 inserted into the lower die 3 is perpendicular to the punching direction of the punch; observing whether one side of the metal plate 1 is abutted with the reference plate 7, if the abutting state shows that the positioning is accurate, punching can be started. The metal plate 1 is inserted on the lower die 3, and the lower die 3 transversely positions the metal plate 1; the supporting seat 5 is abutted to the lower part of the metal plate 1; the limiting block 612 is abutted against one side of the metal plate 1; the supporting roller 42 is abutted against one end of the metal plate 1 far away from the lower die 3, and the supporting roller and the metal plate are mutually cooperated to position the metal plate 1. Finally, whether the positioning is accurate or not is judged by the reference plate 7, so that the positioning tool for punching the metal plate can position the long metal plate 1 in the middle, and the movement of the metal plate 1 is reduced and the punching precision is increased during punching.
Claims (10)
1. A metal plate spare punches a hole and uses location frock which characterized in that: the die comprises a lower die (3) provided with a die hole and a supporting roller assembly (4), wherein the lower die (3) is arranged on a lower die holder (2) below a punch of a punch press, the lower die (3) is used for supporting one end of a metal plate (1), and the supporting roller assembly (4) is used for supporting the other end of the metal plate (1);
the supporting roller assembly (4) comprises a supporting roller support (41), a supporting roller (42) and a supporting roller connecting plate (43), the supporting roller connecting plate (43) is arranged on the punching machine, the supporting roller support (41) is arranged on the supporting roller connecting plate (43), the supporting roller (42) is arranged on the supporting roller support (41), and the supporting roller (42) is used for supporting one end, far away from the lower die (3), of the metal plate (1).
2. The positioning tool for punching metal plate parts according to claim 1, wherein: the support roller (42) is rotated on the support roller bracket (41).
3. The positioning tool for punching metal plate parts according to claim 1, wherein: the lower die holder (2) is detachably connected to the punch press; the supporting roller assembly (4) further comprises an up-down lifting piece (44), the up-down lifting piece (44) is connected to the supporting roller connecting plate (43), the supporting roller bracket (41) is arranged on the up-down lifting piece (44), and the up-down lifting piece (44) is used for adjusting the supporting roller (42) up and down.
4. A metal plate punching positioning tool according to claim 3, characterized in that: the lifting piece (44) comprises a driving sprocket (441), a driven sprocket (442), a chain (443), a connecting shaft (444), a motor (445) and a sprocket support (446), wherein the driving sprocket (441) and the driven sprocket (442) are both rotatably connected to the sprocket support (446), and the chain (443) is meshed with the driving sprocket (441) and the driven sprocket (442); one end of the connecting shaft (444) is fixedly connected to the output end of the motor (445), the connecting shaft (444) penetrates through the chain wheel support (446) and is fixedly connected with the driving chain wheel (441), and the connecting shaft (444) rotates on the chain wheel support (446); the support roller bracket (41) is fixedly arranged on the chain (443), and the chain wheel bracket (446) is fixedly arranged on the support roller connecting plate (43).
5. The positioning tool for punching metal plate parts according to claim 1, wherein: the lower die (3) is provided with a plug strip (31), the plug strip (31) is plugged into a plug groove (12) of the metal plate (1), and the plug strip (31) is used for positioning the metal plate (1) plugged onto the lower die (3).
6. The positioning tool for punching metal plate parts according to claim 1, wherein: the positioning tool for punching the metal plate part further comprises a supporting seat (5), wherein the supporting seat (5) is arranged on the lower die holder (2), and the supporting seat (5) is used for supporting the metal plate part (1) inserted on the lower die (3).
7. The positioning tool for punching metal plate parts according to claim 1, wherein: the positioning tool for punching the metal plate part further comprises a reference plate (7), wherein the reference plate (7) is arranged on the supporting roller connecting plate (43), and the reference plate (7) is used for judging whether the metal plate part (1) is positioned accurately or not.
8. The positioning tool for punching metal plate parts according to claim 1, wherein: the positioning tool for punching the metal plate part further comprises a side positioning part (6), the side positioning part (6) comprises a sliding part (61) and a rotating part (62), a sliding groove (21) and a rotating groove (22) are formed in the lower die holder (2), the sliding groove (21) and the rotating groove (22) are formed in the same direction and are communicated, the sliding part (61) slides in the sliding groove (21), the rotating part (62) is in threaded connection with the rotating groove (22), the rotating part (62) is in butt joint with the sliding part (61), and the rotating part (62) rotates to enable the sliding part (61) to move towards the direction close to the lower die (3), so that the sliding part (61) is enabled to be in butt joint with the metal plate part (1) inserted on the lower die (3).
9. The positioning tool for punching metal plate parts according to claim 8, wherein: the sliding part (61) comprises a sliding block (611), a limiting block (612) and a supporting spring (613); the sliding block (611) slides in the sliding groove (21); the limiting block (612) is connected to one end of the sliding block (611), and the limiting block (612) is used for positioning a metal plate (1) inserted into the lower die (3);
one end of the supporting spring (613) is abutted against the bottom of the rotating groove (22), and the other end is abutted against one surface of the sliding block (611); the rotating part (62) is abutted against the other surface of the sliding block (611), and the supporting spring (613) is used for promoting the sliding block (611) to be abutted against the rotating part (62).
10. The positioning tool for punching metal plate parts according to claim 9, wherein: the side positioning piece (6) further comprises a fixing part (63), the fixing part (63) comprises a fixing block (631) and a fixing groove (632), the fixing groove (632) is formed in the lower die holder (2), and the fixing groove (632) and the sliding groove (21) are formed in the same direction and are communicated; the fixed block (631) is connected to one surface, far away from the limiting block (612), of the sliding block (611), the fixed block (631) slides in the fixed groove (632), and the fixed block (631) is used for limiting the sliding block (611).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223374227.1U CN219188296U (en) | 2022-12-14 | 2022-12-14 | Positioning tool for punching metal plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223374227.1U CN219188296U (en) | 2022-12-14 | 2022-12-14 | Positioning tool for punching metal plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219188296U true CN219188296U (en) | 2023-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223374227.1U Active CN219188296U (en) | 2022-12-14 | 2022-12-14 | Positioning tool for punching metal plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219188296U (en) |
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2022
- 2022-12-14 CN CN202223374227.1U patent/CN219188296U/en active Active
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