CN217225525U - Scanning code spraying equipment - Google Patents
Scanning code spraying equipment Download PDFInfo
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- CN217225525U CN217225525U CN202220252266.5U CN202220252266U CN217225525U CN 217225525 U CN217225525 U CN 217225525U CN 202220252266 U CN202220252266 U CN 202220252266U CN 217225525 U CN217225525 U CN 217225525U
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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
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model relates to a spout a yard equipment technical field, disclose a scanning and spout a yard equipment, including the workspace, be equipped with the revolving stage in the workspace, be equipped with the frame car that is used for installing shell section work piece on the revolving stage, in order to realize fixed positioning to the frame car, be equipped with the location frock that is used for fixed frame car on the revolving stage, the inboard of shell section work piece is inboard scanning and spouts the sign indicating number district, the outside of shell section work piece is outside scanning and spouts the sign indicating number district, be equipped with the portal frame in the workspace, be equipped with the slider that moves along the Y axle direction of portal frame on the portal frame, be equipped with Z axle elevating gear on the slider, be equipped with six robots on the Z axle elevating gear; the utility model provides a pair of code equipment is spouted in scanning has solved present shell section annex mounted position's affirmation and has been measured by the manual work and rule and accomplish, poor reproducibility, inefficiency, problem that intensity of labour is big.
Description
Technical Field
The utility model relates to a spout a yard equipment technical field, concretely relates to code equipment is spouted in scanning.
Background
At present, for a shell section workpiece with a large diameter, for example, the diameter of the shell section workpiece is two, 2250mm or 3350mm, and certainly the height of the shell section workpiece is 2500mm, for a shell section workpiece with a large size, in order to implement installation of accessories thereof, it is necessary to scribe the inner and outer walls of the shell section workpiece, and at present, determination of the installation position of the accessories for the shell section workpiece with the large diameter is completed by manually measuring and scribing, and therefore, the repeatability is poor, the efficiency is low, and the labor intensity is high, and therefore, it is urgently needed to add an automatic measuring and code spraying device to automatically complete all the works of measuring and scribing at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a code equipment is spouted in scanning for solve at least one above-mentioned problem that exists among the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a scanning code spraying device comprises a working area, wherein a rotary table is arranged in the working area, a frame trolley used for mounting a shell section workpiece is arranged on the rotary table, in order to realize positioning and fixing of the frame trolley, a positioning tool used for fixing the frame trolley is arranged on the rotary table, the inner side of the shell section workpiece is an inner side scanning code spraying area, the outer side of the shell section workpiece is an outer side scanning code spraying area, a portal frame is arranged in the working area, a sliding block which moves along the Y-axis direction of the portal frame is arranged on the portal frame, a Z-axis lifting device is arranged on the sliding block, a six-axis robot is arranged on the Z-axis lifting device, and a three-dimensional space scanner and a code spraying head are arranged on the six-axis robot; the working area is internally provided with a first lifting frame, the first lifting frame is provided with a first C-Track optical tracker, the first C-Track optical tracker is positioned right above the rotary table, one side of the rotary table in the working area is provided with a second lifting frame, the second lifting frame is provided with a second C-Track optical tracker, and the second C-Track optical tracker is positioned on one side of the rotary table.
In the technical scheme, the rotary table is arranged at the center of the working area and can rotate, the frame trolley is used for supporting and positioning the shell section workpiece, specifically, the shell section workpiece is of a cylindrical structure with an upper opening and a lower opening, and the shell section workpiece can be supported and positioned by uniformly arranging limiting blocks on the top of the frame trolley in the circumferential direction; the outer side of the shell section workpiece is an outer scanning code spraying area, the inner side of the shell section workpiece is an inner scanning code spraying area, the six-axis robot is arranged on the portal frame and can be driven to move along the Y/Z directions under the driving of a slide block moving along the Y axis and a Z axis lifting device, the position of the six-axis robot is switched, the omnibearing scanning area coverage is realized, and the three-dimensional space scanner can realize more comprehensive scanning coverage on the shell section workpiece by matching with the rotation of the rotary table in the scanning process of the three-dimensional space scanner; a first C-Track optical tracker is arranged on the first lifting frame and is positioned right above the turntable, the first C-Track optical tracker can realize the rapid positioning of the target point on the workpiece from right above, and similarly, the second lifting frame can also drive the second C-Track optical tracker to lift, because the second C-Track optical tracker is positioned at one side of the rotary table, namely, at the outer side scanning code spraying area, the second C-Track optical tracker can realize the quick positioning of the target point on the workpiece from the side surface and can realize the lifting adjustment of the first lifting frame and the second lifting frame, thereby enabling the first C-Track optical tracker and the second C-Track optical tracker to realize more comprehensive target positioning of the shell workpiece, so as to realize the establishment of a space coordinate system and then facilitate the three-dimensional space scanner to carry out three-dimensional space comprehensive scanning on the shell section workpiece. After the scanning is finished, the six-axis robot drives the code spraying head to spray codes and line according to the line marking track calculated according to the scanning result, and the line marking operation is automatically finished.
In conclusion, the design solves the problems that the existing determination of the mounting position of the accessories of the shell section workpiece is finished by manually measuring and marking, the repeatability is poor, the efficiency is low and the labor intensity is high from the positioning, rotating and marking of the shell section workpiece and the matched movement of the three-dimensional space scanner and the C-Track optical tracker.
Further, in order to make the location frock can adapt to not unidimensional unwheeling, the location frock include around the centre of rotation circumference of revolving stage evenly set up on the revolving stage many slide rails and with slide rail sliding fit's sliding seat, the lower extreme stabilizer blade of unwheeling respectively with the detachable fixed connection of corresponding sliding seat.
Specifically, if the size of the trolley is small, the sliding seat is moved to a position close to the center of the turntable before the trolley is installed, and then the support legs at the lower end of the trolley are fixedly installed on the corresponding sliding seats.
Furthermore, in order to ensure the safety of scanning operation and avoid safety accidents caused by the fact that operators not in the equipment enter a working area, a protective fence is arranged outside the working area.
Furthermore, a safety grating is arranged at the entrance and the exit of the protective fence. The safety grating is arranged to prevent safety accidents caused by the fact that non-related personnel mistakenly run into the scanning working area.
Further, the turntable is driven by a servo motor. The servo motor is adopted for driving, sufficient displacement precision is guaranteed, and the servo motor is independently controlled and does not need to be linked with the six-axis robot.
Furthermore, a spray code controller for controlling the spray head is arranged on the Z-axis lifting device.
Further, in order to provide a specific rotary table, the rotary table comprises a central support part, a rotary table and a rotary driving mechanism for driving the rotary table to rotate around the central support part, the rotary driving mechanism comprises a servo motor, and the central support part and the rotary table are in rotary fit through a bearing.
Further, for the steady rotation of better realization revolving stage, realize the effective support to the revolving stage simultaneously, the below of carousel is equipped with supporting mechanism, supporting mechanism includes a plurality of support frame, the upper end of support frame is rotated and is connected with the gyro wheel, gyro wheel and carousel roll cooperation.
The utility model has the advantages that: in the technical scheme, the rotary table is arranged at the center of a working area and can rotate, the trolley is used for supporting and positioning the shell section workpiece, specifically, the shell section workpiece is of a cylindrical structure with an upper opening and a lower opening, and the shell section workpiece can be supported and positioned by uniformly arranging limiting blocks on the top of the trolley in the circumferential direction; the outer side of the shell section workpiece is an outer scanning code spraying area, the inner side of the shell section workpiece is an inner scanning code spraying area, the six-axis robot is arranged on the portal frame and can be driven to move along the Y/Z directions under the driving of a sliding block moving along the Y axis and a Z axis lifting device, the position of the six-axis robot is switched, and the omnibearing scanning area coverage is realized; a first C-Track optical tracker is arranged on the first lifting frame and is positioned right above the turntable, the first C-Track optical tracker can realize the rapid positioning of the target point on the workpiece from the right above, and similarly, the second lifting frame can also drive the second C-Track optical tracker to lift, because the second C-Track optical tracker is positioned at one side of the rotary table, namely, at the outer side scanning code spraying area, the second C-Track optical tracker can realize the quick positioning of the target point on the workpiece from the side surface and can realize the lifting adjustment of the first lifting frame and the second lifting frame, thereby enabling the first C-Track optical tracker and the second C-Track optical tracker to realize more comprehensive target positioning of the shell workpiece, so as to realize the establishment of a space coordinate system and then facilitate the three-dimensional space scanner to carry out the comprehensive scanning of the three-dimensional space on the shell section workpiece. After the scanning is finished, the six-axis robot drives the code spraying head to spray codes and line according to the line marking track calculated according to the scanning result, and the line marking operation is automatically finished.
In conclusion, the design solves the problems that the existing determination of the mounting position of the accessories of the shell section workpiece is finished by manually measuring and marking, the repeatability is poor, the efficiency is low and the labor intensity is high from the positioning, rotating and marking of the shell section workpiece and the matched movement of the three-dimensional space scanner and the C-Track optical tracker.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
fig. 3 is a schematic structural diagram of the working state of the present invention.
In the figure: a working area 1; a turntable 2; a trolley 3; a shell segment workpiece 4; scanning the code spraying area 5 inside; scanning the code spraying area 6 on the outer side; a gantry frame 7; a slide block 8; a Z-axis lifting device 9; a six-axis robot 10; a three-dimensional space scanner 11; a spray head 12; a first crane 13; a first C-Track optical tracker 14; a second C-Track optical tracker 15; a second crane 16; a protective fence 17; a security grating 18; a code spraying controller 19; a slide rail 20; a slide base 21; the legs 22; a stopper 23.
Detailed Description
Example 1:
as shown in fig. 1-3, this embodiment provides a scanning code-spraying apparatus, which includes a working area 1, a rotating table 2 is disposed in the working area 1, a cart 3 for mounting a shell-section workpiece 4 is disposed on the rotating table 2, specifically, a plurality of stoppers 23 are uniformly disposed in the circumferential direction of the upper end of the cart 3, each stopper 23 is L-shaped, a region surrounded by the plurality of stoppers 23 in the circumferential direction realizes the limitation of the shell-section workpiece 4, the shell-section workpiece 4 can be directly placed on the stopper 23 to support and limit the shell-section workpiece 4, in order to realize the positioning and fixing of the cart 3, a positioning tool for fixing the cart 3 is disposed on the rotating table 2, the inner side of the shell-section workpiece 4 is an inner-side scanning code-spraying region 5, the outer side of the shell-section workpiece 4 is an outer-side scanning code-spraying region 6, a portal frame 7 is disposed in the working area 1, a sliding block 8 moving along the Y-axis direction of the portal frame 7 is disposed on the portal frame 7, a Z-axis lifting device 9 is arranged on the sliding block 8, a six-axis robot 10 is arranged on the Z-axis lifting device 9, and a three-dimensional space scanner 11 and a code spraying head 12 are arranged on the six-axis robot 10; the working area 1 is internally provided with a first lifting frame 13, the first lifting frame 13 is provided with a first C-Track optical tracker 14, the first C-Track optical tracker 14 is positioned right above the rotary table 2, specifically, the first lifting frame 13 is an L-shaped lifting frame, one side of the rotary table 2 in the working area 1 is provided with a second lifting frame 16, the second lifting frame 16 is provided with a second C-Track optical tracker 15, and the second C-Track optical tracker 15 is positioned on one side of the rotary table 2.
In the technical scheme, the rotary table 2 is arranged at the center of the working area 1, the rotary table 2 can rotate, the trolley 3 is used for supporting and positioning the shell section workpiece 4, specifically, the shell section workpiece 4 is of a cylindrical structure with an upper opening and a lower opening, the trolley 3 with different sizes is arranged for shell section workpieces 4 with different sizes, the limiting blocks 23 are uniformly arranged on the top of the trolley 3 in the circumferential direction, the shell section workpiece 4 can be supported and positioned, and the trolley 3 is fixed through a positioning tool arranged on the rotary table; the outer side of the shell section workpiece 4 is an outer scanning code spraying area 6, the inner side of the shell section workpiece 4 is an inner scanning code spraying area 5, the six-axis robot 10 is arranged on a portal frame 7, and can be driven to move along two directions of Y/Z by a slide block 8 moving along the Y axis and a Z axis lifting device 9, the position of the six-axis robot 10 is switched, and the omnibearing scanning area coverage is realized, and the three-dimensional space scanner 11 is matched with the rotation of the rotary table 2 in the scanning process, so that the three-dimensional space scanner 11 can realize more comprehensive scanning coverage on the shell section workpiece 4; the first C-Track optical tracker 14 is arranged on the first lifting frame 13, the first C-Track optical tracker 14 is positioned right above the rotary table 2, the target spot on the workpiece can be quickly positioned right above the first C-Track optical tracker 14, similarly, the second lifting frame 16 can also drive the second C-Track optical tracker 15 to lift, the second C-Track optical tracker 15 is positioned on one side of the rotary table 2, namely, positioned on the outer side for scanning the code spraying area 6, the second C-Track optical tracker 15 can quickly position the target spot on the workpiece from the side, and the first C-Track optical tracker 14 and the second C-Track optical tracker 15 can realize more comprehensive target spot positioning on the shell section workpiece 4 through the lifting regulation of the first lifting frame 13 and the second lifting frame 16, so as to realize the establishment of a space coordinate system and then facilitate the three-dimensional space scanner 11 to carry out three-dimensional space comprehensive scanning on the shell section workpiece. After the scanning is finished, the six-axis robot drives the code spraying head to spray codes and line according to the line marking track calculated according to the scanning result, and the line marking operation is automatically finished.
In conclusion, the design solves the problems that the existing determination of the mounting position of the accessories of the shell workpiece is finished by manually measuring and marking, the repeatability is poor, the efficiency is low and the labor intensity is high from the positioning, the rotation and the marking of the shell workpiece and the matched movement of the three-dimensional space scanner 11 and the C-Track optical tracker 14, and can realize automatic measurement and code spraying, so that all code spraying work is automatically finished, and the efficiency is obviously improved.
Example 2:
this embodiment is optimized based on embodiment 1 described above.
In order to make the location frock can the not unidimensional unwheeling 3 of adaptation, the location frock includes that the centre of rotation circumference around revolving stage 2 evenly sets up many slide rails 20 on revolving stage 2 and with slide rail 20 sliding fit's sliding seat 21, the detachable fixed connection of lower extreme stabilizer blade 22 of unwheeling 3 respectively with the sliding seat 21 that corresponds, specifically, slide rail 20 can be the spout that sets up on revolving stage 2, the lower extreme of sliding seat 21 be equipped with spout sliding fit's sliding block.
Specifically, if the size of the bogie 3 is small, the slide base 21 may be moved to a position closer to the center of the turntable 2 before the bogie 3 is mounted, and then the support legs 22 at the lower end of the bogie 3 are fixedly mounted on the corresponding slide bases 21. If the size of the unwheeling 3 is large, the sliding seat 21 is moved reversely and the unwheeling 3 is installed. It should be noted that, in order to improve the adjustment rapidity of the sliding seat 21, a scale may be disposed on one side of the sliding rail 20, so as to facilitate observation of the moving distance of the sliding seat 21.
Specifically, the support leg 22 and the sliding seat 21 may be detachably fixed by a fixing member such as a bolt or a screw.
Example 3:
this embodiment is optimized based on embodiment 2 described above.
In order to ensure the safety of scanning operation and avoid safety accidents caused by the fact that operators not in the equipment enter the working area 1, a protective fence 17 is arranged outside the working area 1.
A safety light barrier 18 is arranged at the entrance and exit of the protective fence 17. The safety grating 18 is arranged to prevent safety accidents caused by the mistake of irrelevant personnel entering the scanning working area 1.
Example 4:
this embodiment is optimized based on embodiment 3 described above.
The turntable 2 is driven by a servo motor. The servo motor is adopted for driving, sufficient displacement precision is guaranteed, and the servo motor is independently controlled and does not need to be linked with the six-axis robot 10.
Example 5:
this embodiment is optimized based on embodiment 4 described above.
And a spray code controller 19 for controlling the spray head 12 is arranged on the Z-axis lifting device 9.
Example 6:
this example was optimized based on example 5 described above.
In order to provide a specific turntable 2, the turntable 2 comprises a central support part, a turntable and a rotation driving mechanism for driving the turntable to rotate around the central support part, the rotation driving mechanism comprises a servo motor, and the central support part and the turntable are in rotation fit through a bearing.
For the steady rotation of better realization revolving stage 2, realize simultaneously effectively supporting revolving stage 2, the below of carousel is equipped with supporting mechanism, and supporting mechanism includes a plurality of support frame, and the upper end of support frame is rotated and is connected with the gyro wheel, gyro wheel and carousel roll cooperation.
It should be noted that the working principle of the present device is as follows:
1. the workpiece is carried to the turn table 2 using the carriage 3. The turntable 2 is provided with a positioning tool for fixing the frame trolley 3, and the standard connecting structure (a sliding rail and a sliding seat) of the positioning tool is designed, so that the positioning tool can be conveniently adjusted to be in a positioning state matched with the frame trolley 3 with different sizes.
2. The product profile data is measured by the turntable 2, the six-axis robot 10, and the three-dimensional space scanner 11. The three-dimensional scanner 11 uses pure blue light technology and has a plurality of different working modes. The standard mode is provided with 34 crossed laser lines, the scanning speed is up to 210 ten thousand times of measurement/second, and three-dimensional data of the surface of an object can be rapidly acquired.
3. The dynamic tracking measurement system Track, C-Track optical tracker 14 is configured to Track the reference model of the entire system and ensure accurate positioning, it enables continuous image acquisition and transmission, reflector illumination, data exchange between management and computer, and storage of sensor parameters.
4. The matched software control used by the equipment comprises a control system and measurement software. The measurement process system acquires images at the speed of 30Hz per second and calculates and presents the free surface data or the geometric data of the measured object in real time through professional software (the conventional design is provided by a three-dimensional space scanner and a C-Track optical tracker manufacturer in a matching way). By means of software, the actual size of the product can be quickly obtained and compared with a standard digital-analog to obtain a deviation value so as to guide the automatic line drawing and code spraying operation of equipment.
5. A gantry system (a gantry frame 7 and a Z-axis lifting device 9) is configured to realize the Y/Z two-axis movement of the scanning robot, and the capability of the six-axis robot 10 to fully cover all scanning areas (an outer scanning code spraying area 6 and an inner scanning code spraying area 5) is realized.
6. In order to improve the code spraying efficiency, high-performance code spraying equipment can be connected to the code spraying head 12, the maximum code spraying working efficiency of 293 m/min (single-row code spraying) can be realized, and the work of code spraying, identification and the like can be rapidly completed. The ink can be used for marking and code spraying according to the use requirement, and if the marking and the identification are required to be eliminated, the ink can be erased only by using a corresponding solvent (alcohol).
It should be noted that the operation flow of the present apparatus is as follows:
1. selecting the model of a product (a shell section workpiece) on a touch screen of a control cabinet, and automatically switching programs by a system;
2. an operator adjusts the position of a positioning tool on the rotary table 2 to a workpiece positioning area;
3. an operator pushes the frame trolley 3 (the shell section workpiece 4 is arranged on the frame trolley 3) to move the shell section workpiece 4 in place, and the frame trolley 3 is locked on the rotary table 2 through a positioning tool;
4. the operator exits the work area 1;
5. an operator starts the device;
6. firstly scanning the mark points on the rotary table 2 and the positioning tool by the three-dimensional space scanner 11, then scanning the object to be measured (the shell section workpiece 4), and respectively scanning the inner wall and the outer wall;
7. the scanning needs to be divided into multiple times, when the scanning of one area is finished, the shell section workpiece 4 rotates along with the rotary table 2, and the scanning of the next area is carried out until all the scanning is finished;
8. fitting all the scanning data in a computer, performing reverse modeling, and calculating deviation;
9. according to the deviation calculation result, automatically planning a path according to the measurement result to spray codes, namely automatically spraying codes according to the corrected position, rotating the rotary table 2, and matching with the six-axis robot 10 to finish the code spraying of all areas;
10. the operator enters the working area 1 and hoists the blanking.
It should be noted that the software control part used in conjunction with the device is of the existing design and is provided by the corresponding three-dimensional space scanner and C-Track optical tracker manufacturers.
Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a scan spouts a yard equipment which characterized in that: the automatic conveying device comprises a working area, wherein a rotary table is arranged in the working area, a frame trolley used for mounting a shell section workpiece is arranged on the rotary table, in order to realize positioning and fixing of the frame trolley, a positioning tool used for fixing the frame trolley is arranged on the rotary table, the inner side of the shell section workpiece is an inner side scanning code spraying area, the outer side of the shell section workpiece is an outer side scanning code spraying area, a portal frame is arranged in the working area, a sliding block moving along the Y-axis direction of the portal frame is arranged on the portal frame, a Z-axis lifting device is arranged on the sliding block, a six-axis robot is arranged on the Z-axis lifting device, and a three-dimensional space scanner and a code spraying head are arranged on the six-axis robot; the automatic lifting device is characterized in that a first lifting frame is arranged in the working area, a first C-Track optical tracker is arranged on the first lifting frame, the first C-Track optical tracker is located right above the rotary table, a second lifting frame is arranged on one side, located on the rotary table, in the working area, a second C-Track optical tracker is arranged on the second lifting frame, and the second C-Track optical tracker is located on one side of the rotary table.
2. The scanning and code-spraying device according to claim 1, characterized in that: the location frock includes around the even many slide rails that set up on the revolving stage of rotation center circumference of revolving stage and with slide rail sliding fit's sliding seat, the lower extreme stabilizer blade of unwheeling respectively with the detachable fixed connection of sliding seat that corresponds.
3. The scanning and code-spraying device according to claim 1, characterized in that: and a protective fence is arranged outside the working area.
4. The scanning and code-spraying device according to claim 3, characterized in that: and a safety grating is arranged at the entrance and the exit of the protective fence.
5. The scanning and code-spraying device according to claim 1, characterized in that: the turntable is driven by a servo motor.
6. The scanning and code-spraying device according to claim 1, characterized in that: and the Z-axis lifting device is provided with a spraying code controller for controlling the spraying head.
7. The scanning and code-spraying device according to claim 1, characterized in that: the turntable comprises a central supporting part, a turntable and a rotation driving mechanism used for driving the turntable to rotate around the central supporting part, the rotation driving mechanism comprises a servo motor, and the central supporting part and the turntable are in running fit through a bearing.
8. The scanning and code-spraying device according to claim 7, characterized in that: the below of carousel is equipped with supporting mechanism, supporting mechanism includes a plurality of support frame, the upper end of support frame is rotated and is connected with the gyro wheel, gyro wheel and carousel roll cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220252266.5U CN217225525U (en) | 2022-01-28 | 2022-01-28 | Scanning code spraying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220252266.5U CN217225525U (en) | 2022-01-28 | 2022-01-28 | Scanning code spraying equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217225525U true CN217225525U (en) | 2022-08-19 |
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ID=82834399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220252266.5U Active CN217225525U (en) | 2022-01-28 | 2022-01-28 | Scanning code spraying equipment |
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| Country | Link |
|---|---|
| CN (1) | CN217225525U (en) |
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2022
- 2022-01-28 CN CN202220252266.5U patent/CN217225525U/en active Active
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