CN219597768U - Arc rolling machine - Google Patents
Arc rolling machine Download PDFInfo
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- CN219597768U CN219597768U CN202320140392.6U CN202320140392U CN219597768U CN 219597768 U CN219597768 U CN 219597768U CN 202320140392 U CN202320140392 U CN 202320140392U CN 219597768 U CN219597768 U CN 219597768U
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- roller
- roll shaft
- adjusting
- adjusting block
- frame
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Abstract
The utility model discloses an arc rolling machine which comprises a first roll shaft, a second roll shaft, a third roll shaft, a driving component and an adjusting mechanism, wherein the third roll shaft is positioned above the first roll shaft and the second roll shaft, and the adjusting mechanism drives the third roll shaft to move upwards or downwards. When the metal plate needs to be bent, the end part of the metal plate is inserted into a gap between the third roller and the first roller or between the third roller and the second roller, then the gap between the third roller and the first roller or between the third roller and the second roller is adjusted through an adjusting mechanism, the third roller is ensured to be pressed on the plate, the first roller, the second roller and the third roller which rotate can process the plate into a bent shape, the inserting angles of the end part of the metal plate are different, the processed shape is different, an operator can adjust the third roller to move upwards or downwards according to the thickness of the metal plate in the processing process, the third roller is ensured to be pressed on the metal plate, and the bending processing of the metal plate is very efficient.
Description
Technical Field
The utility model relates to an arc rolling machine.
Background
The arc rolling machine is also called a rolling machine, and is a common bending processing device for metal plates, such as processing the plates into circles, arcs, ovals, parabolas and the like.
The existing arc rolling machine is used for machining plates of the same specification, has large limitation, and also has a plurality of arc rolling machines capable of adjusting the spacing between the roll shafts, when in use, the spacing between the roll shafts is required to be adjusted according to the plates of different thicknesses, but the adjustment is very troublesome, the production efficiency is affected, and therefore, the development of equipment capable of adjusting the spacing between the roll shafts and convenient to operate is necessary.
Disclosure of Invention
The utility model provides an arc rolling machine for solving at least one of the technical problems.
According to one aspect of the present utility model, there is provided an arc rolling machine comprising:
a first roller shaft;
the second roll shafts are arranged in parallel with the first roll shafts in the horizontal direction;
the third roll shaft is positioned above the first roll shaft and the second roll shaft, and gaps for the plates to pass through are reserved between the third roll shaft and the first roll shaft and between the third roll shaft and the second roll shaft;
the driving component drives the first roll shaft and the second roll shaft to rotate in the same direction; and
and the end part of the third roll shaft is arranged on the adjusting mechanism and is rotationally connected with the adjusting mechanism, and the adjusting mechanism drives the third roll shaft to move upwards or downwards.
When the arc rolling machine disclosed by the utility model is used for bending a metal plate, the end part of the metal plate is inserted into a gap between the third roller and the first roller or a gap between the third roller and the second roller, then the gap between the third roller and the first roller or the gap between the third roller and the second roller is regulated by the regulating mechanism, so that the third roller is pressed on the metal plate, the first roller and the second roller rotate in the same direction under the action of the driving component, the first roller and the second roller which rotate in the same direction drive the third roller to rotate in the opposite direction, the rotating first roller, the second roller and the third roller can process the metal plate into a bent shape, the inserting angles of the end parts of the metal plate are different, the processed shapes are different, and an operator can regulate the third roller to move upwards or downwards according to the thickness of the metal plate in the processing process, so that the third roller is pressed on the metal plate, and the bending of the metal plate is very efficient.
Preferably, the device further comprises a frame, both ends of the first roll shaft and the second roll shaft are arranged on the frame and are rotationally connected with the frame, and the adjusting mechanism is arranged on the frame.
Therefore, the frame can provide bearing for the first roll shaft, the second roll shaft and the third roll shaft, and the whole carrying of equipment is convenient.
Preferably, the adjusting mechanism comprises an adjusting block, an adjusting screw and a handle, wherein the adjusting block is arranged on the frame in a sliding way, one end of the adjusting screw penetrates through the frame and then is arranged on the adjusting block, the adjusting screw is in threaded connection with the frame, the end part of the third roll shaft is arranged on the adjusting block and is rotationally connected with the adjusting block, and the handle is arranged at the other end of the adjusting screw.
Therefore, after the end part of the metal plate is inserted into the gap between the third roll shaft and the first roll shaft or the gap between the third roll shaft and the second roll shaft, when the gap between the third roll shaft and the first roll shaft or the gap between the third roll shaft and the second roll shaft is required to be adjusted, the handle is rotated, the handle drives the adjusting screw to move upwards or downwards on the frame, the adjusting screw drives the adjusting block to synchronously move upwards or downwards, and the adjusting block drives the third roll shaft to move upwards or downwards, so that the gap between the third roll shaft and the first roll shaft or the gap between the third roll shaft and the second roll shaft is adjusted, the operation is very convenient, and the adjusting block and the third roll shaft can move upwards or downwards very stably due to the fact that the adjusting block is arranged on the frame in a sliding mode, and the adjusting precision is ensured.
Preferably, the number of the adjusting mechanisms is two, one end of the third roller shaft is arranged on one adjusting block and is rotationally connected with the adjusting block, and the other end of the third roller shaft is arranged on the other adjusting block and is rotationally connected with the adjusting block.
Therefore, an operator can bend the metal plate in the area where one end of the third roll shaft is located, or bend the metal plate in the area where the other end of the third roll shaft is located, and when the metal plate with a large width is processed, the distance between the two ends of the third roll shaft and the first roll shaft and the second roll shaft can be adjusted at the same time.
Preferably, the frame is provided with an adjusting window, two opposite sides of the adjusting block are respectively provided with a sliding groove, and the sliding grooves are clamped on the side wall of the adjusting window.
Therefore, when the handle is rotated, the adjusting screw drives the adjusting block to synchronously move upwards or downwards, and as the two sides of the adjusting block move upwards or downwards on the side wall of the adjusting window through the sliding groove, the adjusting block can be very stable when moving upwards or downwards, the stability of the upward or downward movement of the third roll shaft is ensured, and the adjustment precision of the spacing between the third roll shaft and the first roll shaft or between the third roll shaft and the second roll shaft is ensured.
Preferably, the adjusting block is provided with a bearing seat, and the end part of the third roll shaft is inserted into an inner ring of the bearing seat on the adjusting block.
Thus, the rotation of the third roller shaft on the adjusting block can be achieved by the bearing block.
Preferably, the control device further comprises a first foot switch and a second foot switch, wherein the first foot switch and the second foot switch are connected with the driving part, the first foot switch is close to one regulating block, and the second foot switch is close to the other regulating block.
Therefore, when an operator bends the metal plate in the area where one end of the third roll shaft is located, the first roll shaft and the second roll shaft can be controlled to rotate through stepping on the first foot switch, and when the operator bends the metal plate in the area where the other end of the third roll shaft is located, the first roll shaft and the second roll shaft can be controlled to rotate through stepping on the second foot switch, so that the operation is very convenient.
Preferably, the driving part comprises a motor, a driving gear, a first driven gear and a second driven gear, the motor drives the driving gear to rotate, the first driven gear and the second driven gear are meshed with the driving gear, the end part of the first roller shaft is arranged on the first driven gear, and the end part of the second roller shaft is arranged on the second driven gear.
Therefore, when the motor drives the driving gear to rotate, the driving gear can drive the first driven gear and the second driven gear to synchronously rotate in the same direction, so that the first roll shaft and the second roll shaft can rotate in the same direction.
Preferably, the adjusting mechanism comprises an adjusting block, an adjusting rod and an air cylinder, wherein the adjusting block is arranged on the frame in a sliding mode, a through hole is formed in the frame, one end of the adjusting rod penetrates through the through hole and then is arranged on the adjusting block, the end portion of the third roll shaft is arranged on the adjusting block and is in rotary connection with the adjusting block, and the air cylinder drives the adjusting rod to move upwards or downwards.
Therefore, after the end part of the metal plate is inserted into the gap between the third roll shaft and the first roll shaft or the gap between the third roll shaft and the second roll shaft, when the gap between the third roll shaft and the first roll shaft or the gap between the third roll shaft and the second roll shaft is required to be adjusted, the cylinder is controlled to act, the driving rod of the cylinder drives the adjusting rod to move upwards or downwards, the adjusting rod drives the adjusting block to synchronously move upwards or downwards, and the adjusting block drives the third roll shaft to move upwards or downwards, so that the gap between the third roll shaft and the first roll shaft or the gap between the third roll shaft and the second roll shaft is adjusted, the operation is very convenient, and the adjusting block and the third roll shaft can be very stable in the axial direction or the downward movement due to the fact that the adjusting block is arranged on the frame in a sliding mode, and the adjusting precision is ensured.
Preferably, the axes of the first roll shaft, the second roll shaft and the third roll shaft are distributed in a regular triangle.
Therefore, the first roll shaft, the second roll shaft and the third roll shaft with the axes in regular triangle distribution can ensure that the distance between the third roll shaft and the first roll shaft is the same as the distance between the third roll shaft and the second roll shaft, and ensure uniformity and consistency of bending of the metal plate.
Drawings
FIG. 1 is a schematic view of an arc roller of the present utility model;
fig. 2 is a schematic structural view of the arc roller shown in fig. 1 in the direction a after hiding a frame and a driving part;
fig. 3 is a schematic structural view of the arc roller shown in fig. 1 in the direction B after hiding the frame and the driving part;
FIG. 4 is a schematic view of the structure of the adjusting block in the arc roller shown in FIG. 1;
fig. 5 is a schematic view of the rolled sheet material of the arc roller shown in fig. 1.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the arc roller or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, 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. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "configured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements.
Referring to fig. 1 to 4, the arc rolling machine includes a first roller 1, a second roller 2, a third roller 3, a driving part 4, an adjusting mechanism 5, a frame 6, a first foot switch 7, and a second foot switch 8.
Referring to fig. 1 to 3, a first roller 1 and a second roller 2 are arranged in parallel in a horizontal direction, the first roller 1 and the second roller 2 are identical in size, the first roller 1 and the second roller 2 are installed at the same height, and a gap is reserved between the first roller 1 and the second roller 2.
Referring to fig. 1, a first frame 601 and a second frame 602 are longitudinally installed on a frame 6, the first frame 601 and the second frame 602 are arranged in parallel, two ends of a first roll shaft 1 are respectively installed on the first frame 601 and the second frame 602 through bearings, two ends of a second roll shaft 2 are respectively installed on the first frame 601 and the second frame 602 through bearings, that is, the first roll shaft 1 and the second roll shaft 2 can both rotate on the frame 6.
The driving component 4 can drive the first roller shaft 1 and the second roller shaft 2 to rotate in the same direction, specifically, referring to fig. 1, the driving component 4 comprises a motor 41 and a driving gear 42, the first driven gear 43 and the second driven gear 44, the driving gear 42 is installed on a rotating shaft of the motor 41, the motor 41 is installed on the frame 6, the motor 41 can drive the driving gear 42 to rotate, the first driven gear 43 and the second driven gear 44 are meshed with the driving gear 42, a gap is reserved between the first driven gear 43 and the second driven gear 44, the first driven gear 43 is installed on an end portion of the first roller shaft 1, the first driven gear 43 and the first roller shaft 1 synchronously rotate, the second driven gear 44 is installed on an end portion of the second roller shaft 2, the second driven gear 44 and the second roller shaft 2 synchronously rotate, and when the motor 41 drives the driving gear 42 to rotate, the driving gear 42 drives the first driven gear 43 and the second driven gear 44 to synchronously rotate in the same direction, and accordingly the first roller shaft 1 and the second roller shaft 2 can rotate in the same direction.
Referring to fig. 1 to 3, the third roller 3 is located above the first roller 1 and the second roller 2, the third roller 3 is arranged in parallel with the first roller 1 and the second roller 2, the third roller 3 is consistent with the first roller 1 and the second roller 2 in size, referring to fig. 2, the axes of the first roller 1, the second roller 2 and the third roller 3 are in regular triangle distribution, the first roller 1, the second roller 2 and the third roller 3 with the axes in regular triangle distribution can ensure that the distance between the third roller 3 and the first roller 1 is the same as the distance between the third roller 3 and the second roller 2, the uniformity and consistency of bending of metal plates are ensured, and gaps for the metal plates to pass through are reserved between the third roller 3 and the first roller 1 and the second roller 2 and can also be adjusted through the adjusting mechanism 5.
The number of the adjusting mechanisms 5 is two, the two adjusting mechanisms 5 are respectively arranged on the first bracket 601 and the second bracket 602, referring to fig. 1 and 2, the adjusting mechanisms 5 comprise an adjusting block 51, an adjusting screw 52 and a handle 53, and the adjusting block 51 is arranged on the frame 6 in a sliding way; specifically, referring to fig. 4, the opposite sides of the adjusting block 51 are respectively formed with sliding grooves 511, referring to fig. 1, the first bracket 601 is formed with adjusting windows 61, the sliding grooves 511 on both sides of one adjusting block 51 are respectively clamped on two side walls 611 of the adjusting window 61 on the first bracket 601, namely, the adjusting block 51 can move up and down in the adjusting window 61 of the first bracket 601, one adjusting screw 52 is screwed in the first bracket 601, the adjusting screw 52 is connected with the first bracket 601 in a threaded manner, the lower end of the adjusting screw 52 is fixed on the adjusting block 51, the handle 53 is transversely mounted on the upper part of the adjusting screw 52, the second bracket 602 is also formed with the adjusting window 61, the sliding grooves 511 on both sides of the other adjusting block 51 are respectively clamped on two side walls 611 of the adjusting window 61 on the second bracket 602, namely, the other adjusting block 51 can move up and down in the adjusting window 61 of the second bracket 602, the other adjusting screw 52 is screwed in the second bracket 602, the adjusting screw 52 is connected with the second bracket 602 in a threaded manner, the lower end of the adjusting screw 52 is fixed on the upper end of the adjusting screw 52 on the handle 52, and the lower end of the handle 52 is mounted on the transverse screw 53.
Referring to fig. 1 and 4, the adjusting blocks 51 are provided with bearing blocks 512, one end of the third roller shaft 3 is inserted into an inner ring of the bearing block 512 on one adjusting block 51, the other end of the third roller shaft 3 is inserted into an inner ring of the bearing block 512 on the other adjusting block 51, and the third roller shaft 3 is rotatably connected with both adjusting blocks 51, so that the third roller shaft 3 can rotate on the frame 6. The adjusting mechanism 5 can drive the third roll shaft 3 to move upwards or downwards, when the distance between the third roll shaft 3 and the first roll shaft 1 and the second roll shaft 2 needs to be adjusted, the handle 53 is rotated, the handle 53 drives the adjusting screw 52 to move upwards or downwards on the frame 6, the adjusting screw 52 drives the adjusting block 51 to synchronously move upwards or downwards, the adjusting block 51 drives the third roll shaft 3 to move upwards or downwards, the distance between the third roll shaft 3 and the first roll shaft 1 and the second roll shaft 2 can be adjusted by rotating the handle 53, the operation is very convenient, and as the two sides of the adjusting block 51 respectively move upwards or downwards on the two side walls 611 of the adjusting window 61 through the sliding grooves 511, the adjusting block 51 can be very stable when moving upwards or downwards, and the adjusting precision of the distance between the third roll shaft 3 and the first roll shaft 1 and the second roll shaft 2 is ensured; in the operation process, when the metal plate is narrow, bending processing can be performed in the area close to the first bracket 601, at the moment, when the distance between the third roll shaft 3 and the first roll shaft 1 and the distance between the third roll shaft 2 need to be adjusted, only the handle 53 on the first bracket 601 can be operated, or bending processing can be performed in the area close to the second bracket 602, at the moment, when the distance between the third roll shaft 3 and the first roll shaft 1 and the distance between the third roll shaft 2 need to be adjusted, only the handle 53 on the second bracket 602 can be operated.
In other embodiments, the structure of the adjusting mechanism 5 may be: the adjusting mechanism 5 comprises an adjusting block 51, an adjusting rod and an air cylinder, the structure and the mounting mode of the adjusting block 51 are the same as those of the adjusting block, the first bracket 601 is not repeated, a perforation is formed in the first bracket 601, one end of the adjusting rod is fixed on a driving rod of the air cylinder, the other end of the adjusting rod passes through the perforation in the first bracket 601 and then is fixed on the adjusting block 51, the air cylinder drives the adjusting rod to move upwards or downwards, the inner diameter of the perforation is larger than the outer diameter of the adjusting rod, the adjusting rod can freely move upwards or downwards in the perforation in the first bracket 601, the second bracket 602 is also formed with the perforation, the other air cylinder is fixed on the second bracket 602, one end of the other adjusting rod is fixed on a driving rod of the air cylinder, the other end of the adjusting rod passes through the perforation in the second bracket 602 and then is fixed on the adjusting block 51, the air cylinder drives the adjusting rod to move upwards or downwards, the inner diameter of the perforation is larger than the outer diameter of the adjusting rod, the adjusting rod can freely move upwards or downwards in the perforation in the second bracket 602, the distance between a third roll shaft 3 and a first roll shaft 1 and a second roll shaft 2 can be conveniently adjusted, the distance between the first roll shaft 3 and the first roll shaft 1 and the second roll shaft 2 can be conveniently moved upwards or downwards, the first roll shaft 3 and the second roll shaft 1 can be conveniently and controlled to move upwards or the roll shaft 3 can be adjusted to adjust the roll shaft 1.
Referring to fig. 1, the first foot switch 7 and the second foot switch 8 are connected with the motor 41 of the driving component 4, the first foot switch 7 and the second foot switch 8 can control the start and stop of the motor 41, the first foot switch 7 is installed on the frame 6 and is close to the first bracket 601, the second foot switch 8 is installed on the frame 6 and is close to the second bracket 602, when an operator bends in a region close to the first bracket 601, the first foot switch 7 can be stepped on to control the rotation of the first roll shaft 1 and the second roll shaft 2, when the operator bends in a region close to the second bracket 602, the second foot switch 8 can be stepped on to control the rotation of the first roll shaft 1 and the second roll shaft 2, and the operation is very convenient.
Referring to fig. 1 and 5, when bending a metal plate 9, inserting the end of the metal plate 9 into a gap between the third roller 3 and the first roller 1 or a gap between the third roller 3 and the second roller 2, then rotating the handle 53, adjusting the distance between the third roller 3 and the first roller 1 and the second roller 3, ensuring that the third roller 3 is pressed on the metal plate 9, under the action of the motor 41, the first roller 1 and the second roller 2 rotate in the same direction to drive the third roller 3 to rotate in the opposite direction, the rotating first roller 1, the rotating second roller 2 and the third roller 3 can process the metal plate into a bent shape, the inserting angles of the end of the metal plate 9 are different, the processed shapes are different, and an operator can adjust the third roller 3 to move upwards or downwards according to the thickness of the metal plate 9, ensuring that the third roller 3 is pressed on the metal plate 9, and the bending roller 3 of the metal plate 9 is very efficiently processed with the first roller 1 and the second roller 2 is very convenient to adjust the distance; in addition, when the metal plate 9 is narrow, bending may be performed in a region close to the first bracket 601, at this time, when the distance between the third roller 3 and the first roller 1 and the second roller 2 needs to be adjusted, only the handle 53 on the first bracket 601 may be operated, the first foot switch 7 may be stepped on to control the rotation of the first roller 1 and the second roller 2, or bending may be performed in a region close to the second bracket 602, at this time, when the distance between the third roller 3 and the first roller 1 and the second roller 2 needs to be adjusted, only the handle 53 on the second bracket 602 may be operated, and the second foot switch 8 may be stepped on to control the rotation of the first roller 1 and the second roller 2, which is very convenient.
The foregoing description is only of some embodiments of the present utility model, and is intended to illustrate the technical means of the present utility model, not to limit the technical scope of the present utility model. The present utility model is obviously modified by those skilled in the art in combination with the prior common general knowledge, and falls within the protection scope of the present utility model.
Claims (9)
1. Arc rolling machine, its characterized in that includes:
a first roller shaft;
the second roll shafts are arranged in parallel with the first roll shafts in the horizontal direction;
the third roll shaft is positioned above the first roll shaft and the second roll shaft, and gaps for the plates to pass through are reserved between the third roll shaft and the first roll shaft and between the third roll shaft and the second roll shaft;
the driving component drives the first roll shaft and the second roll shaft to rotate in the same direction;
the end part of the third roll shaft is arranged on the adjusting mechanism and is rotationally connected with the adjusting mechanism, and the adjusting mechanism drives the third roll shaft to move upwards or downwards; and
the machine frame, the both ends of first roller and second roller all establish in the frame and rotate with the frame and be connected, adjustment mechanism establishes in the frame.
2. The arc rolling machine according to claim 1, wherein the adjusting mechanism comprises an adjusting block, an adjusting screw and a handle, the adjusting block is slidably arranged on the frame, one end of the adjusting screw penetrates through the frame and then is arranged on the adjusting block, the adjusting screw is in threaded connection with the frame, the end part of the third roll shaft is arranged on the adjusting block and is in rotary connection with the adjusting block, and the handle is arranged on the other end of the adjusting screw.
3. The arc rolling machine according to claim 2, wherein the number of the adjusting mechanisms is two, one end of the third roller shaft is arranged on one adjusting block and is rotationally connected with the adjusting block, and the other end of the third roller shaft is arranged on the other adjusting block and is rotationally connected with the adjusting block.
4. The arc rolling machine according to claim 2, wherein the frame is provided with an adjusting window, two opposite sides of the adjusting block are respectively provided with a sliding groove, and the sliding grooves are clamped on the side wall of the adjusting window.
5. The arc rolling machine according to claim 2, wherein the adjusting block is provided with a bearing seat, and the end part of the third roll shaft is inserted into an inner ring of the bearing seat on the adjusting block.
6. The arc rolling machine of claim 3 further comprising a first foot switch and a second foot switch, the first foot switch and the second foot switch each coupled to the drive member, the first foot switch being proximate one of the adjustment blocks and the second foot switch being proximate the other adjustment block.
7. The arc roller according to claim 1, wherein the driving part comprises a motor, a driving gear, a first driven gear and a second driven gear, the motor drives the driving gear to rotate, the first driven gear and the second driven gear are meshed with the driving gear, the end part of the first roller shaft is arranged on the first driven gear, and the end part of the second roller shaft is arranged on the second driven gear.
8. The arc rolling machine according to claim 1, wherein the adjusting mechanism comprises an adjusting block, an adjusting rod and a cylinder, the adjusting block is slidably arranged on the frame, a through hole is formed in the frame, one end of the adjusting rod passes through the through hole and then is arranged on the adjusting block, the end portion of the third roller shaft is arranged on the adjusting block and is rotationally connected with the adjusting block, and the cylinder drives the adjusting rod to move upwards or downwards.
9. The arc roller according to any one of claims 1 to 8, wherein the axes of the first roller, the second roller and the third roller are in regular triangle distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320140392.6U CN219597768U (en) | 2023-01-31 | 2023-01-31 | Arc rolling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320140392.6U CN219597768U (en) | 2023-01-31 | 2023-01-31 | Arc rolling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219597768U true CN219597768U (en) | 2023-08-29 |
Family
ID=87741765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320140392.6U Active CN219597768U (en) | 2023-01-31 | 2023-01-31 | Arc rolling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219597768U (en) |
-
2023
- 2023-01-31 CN CN202320140392.6U patent/CN219597768U/en active Active
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