CN221208713U - Coating gun for single-side blowing lamination of copper-clad plate - Google Patents
Coating gun for single-side blowing lamination of copper-clad plate Download PDFInfo
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- CN221208713U CN221208713U CN202322432705.8U CN202322432705U CN221208713U CN 221208713 U CN221208713 U CN 221208713U CN 202322432705 U CN202322432705 U CN 202322432705U CN 221208713 U CN221208713 U CN 221208713U
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- gun
- coating
- gun head
- blowing
- lamination
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- 239000011248 coating agent Substances 0.000 title claims abstract description 63
- 238000000576 coating method Methods 0.000 title claims abstract description 63
- 238000007664 blowing Methods 0.000 title claims abstract description 46
- 238000003475 lamination Methods 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 36
- 238000009826 distribution Methods 0.000 claims description 17
- 230000000087 stabilizing effect Effects 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims 3
- 239000003292 glue Substances 0.000 abstract description 19
- 239000007921 spray Substances 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 13
- 238000010030 laminating Methods 0.000 abstract description 10
- 230000005484 gravity Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000007711 solidification Methods 0.000 abstract description 5
- 238000007493 shaping process Methods 0.000 abstract description 2
- 230000008023 solidification Effects 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 description 20
- 238000003825 pressing Methods 0.000 description 10
- 238000001035 drying Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
The utility model relates to the technical field of coating devices, and discloses a coating gun for single-side blowing and laminating of a copper-clad plate, which comprises a fixed frame, wherein an adjusting mechanism is arranged below the fixed frame, the lower end of the adjusting mechanism is movably connected with a gun head, the upper left end of the gun head is movably connected with an auxiliary rod downwards, the upper left end of the gun head, which is close to the auxiliary rod, is provided with a rubber feeding pipe, the lower left end of the gun head is provided with a spray head, the upper right end of the gun head is provided with a gas feeding pipe, the position of the gun head corresponding to the gas feeding pipe is provided with a blowing mechanism, and the right end of the gun head is provided with a laminating wheel. This coating rifle of copper-clad plate unilateral blowing lamination glue, after the shower nozzle of rifle head left side down spouts glue, adopts the mode of blowing earlier before the lamination, directly half solidification shaping after the lamination, can effectively control it and flow because of gravity after the coating, influences the coating effect, has saved dry time simultaneously greatly, has improved production efficiency.
Description
Technical Field
The utility model relates to the technical field of coating devices, in particular to a coating gun for single-side blowing and pressing of a copper-clad plate.
Background
In order to meet the requirements of water resistance, rust resistance and the like, the single-side, edge and whole-plate glue coating of the copper-clad plate are common treatment modes, the earliest processing method is to dip the whole substrate into a glue pool, take out the surface glue coating, dry the surface glue coating and the like, and the whole process is largely wasted and gradually replaced by coating modes such as spraying and the like. However, the existing spray coating and re-pressing mode is low in efficiency, and the glue cannot be coagulated in time, so that the glue still flows downwards due to the action of gravity after the coating and pressing, and partial coating is uneven.
Disclosure of utility model
(One) solving the technical problems
According to the intelligent manufacturing development requirement, aiming at the defects of the prior art, the utility model provides the coating gun for the single-side blowing and pressing of the copper-clad plate, which has the advantages of uniform coating and high efficiency, and solves the problems in the background art.
(II) technical scheme
In order to achieve the purposes of uniform coating and high efficiency, the utility model provides the following technical scheme:
The utility model provides a coating rifle of copper-clad plate unilateral pressure-blowing laminating, includes the mount, the below of mount is provided with guiding mechanism, guiding mechanism's lower extreme swing joint has the rifle head, and the left side upper end swing joint of downward rifle head has the auxiliary rod, the left side that the rifle head upper end is close to the auxiliary rod is provided with the rubber tube, the left side lower extreme of rifle head is provided with the shower nozzle, the right side upper end of rifle head is provided with the gas supply pipe, the rifle head corresponds the position of gas supply pipe and is provided with blowing mechanism, the right-hand member of rifle head is provided with the pressure-cladding wheel.
Preferably, the adjusting mechanism comprises a positioning disc, a hydraulic push rod is arranged on the front side of the positioning disc, a limit rod is arranged in the middle of the hydraulic push rod, and a push rod is arranged at the lower end of the hydraulic push rod.
Preferably, the hydraulic push rod is fixedly provided with a sliding block matched with the arc-shaped groove on the positioning disk, and the lower part of the hydraulic push rod is provided with a hinging rod movably connected with the auxiliary rod.
Preferably, the upper end of the limiting rod is arranged in a horizontal groove on the fixing frame.
Preferably, the lower end of the pushing rod is hinged with the middle part of the gun head.
Preferably, the blowing mechanism comprises a stabilizing column, an installing table is fixedly arranged on the outer portion of the stabilizing column, two pressurizing boxes are arranged on two sides of the lower portion of the installing table, a wind wheel is arranged in the pressurizing boxes, a diversion wind pipe is arranged below the wind wheel, a sealing plate is arranged on the outer portion of the lower end of the stabilizing column, an air distribution chamber is arranged below the sealing plate, a plurality of one-way valves are arranged on the outer side of the air distribution chamber, and a plurality of wind nozzles are arranged below the air distribution chamber.
Preferably, the vertical position of the mounting table on the stabilizing column is adjustable, and an air duct for air to flow in is arranged on the outer side of the mounting table.
Preferably, the wind wheel is opposite to the diversion air pipe, and the upper end of the wind wheel is coupled with the driving motor.
Preferably, the air nozzles are mutually independent, and the upper ends of the air nozzles are communicated with the air distribution chamber to correspond to different channels and different air outlet proportions of the diversion air pipes.
(III) beneficial effects
Compared with the prior art, the utility model provides a coating gun for single-side blowing and pressing of a copper-clad plate, which has the following beneficial effects:
1. The coating gun for single-side blowing and pressing of the coating glue on the copper-clad plate is controlled by the adjusting mechanism to seek the best spraying effect, so that the coating gun can be adjusted in a larger range, is suitable for the spraying of the plate surfaces at different positions, and improves the universality of equipment.
2. This coating rifle of copper-clad plate unilateral blowing lamination glue, after the shower nozzle of rifle head left side down spouts glue, adopts the mode of blowing earlier before the lamination, directly half solidification shaping after the lamination, can effectively control it and flow because of gravity after the coating, influences the coating effect, has saved dry time simultaneously greatly, has improved production efficiency.
Drawings
FIG. 1 is a schematic diagram of the main structure of the present utility model;
FIG. 2 is a schematic view of an adjustment mechanism according to the present utility model;
FIG. 3 is a schematic diagram of a blower mechanism according to the present utility model;
FIG. 4 is a schematic view of the air duct of the present utility model.
In the figure: 1. a fixing frame; 2. an adjusting mechanism; 21. a positioning plate; 22. a hydraulic push rod; 23. a limit rod; 24. a push rod; 3. a gun head; 4. an auxiliary lever; 5. a rubber feeding tube; 6. a spray head; 7. a gas supply pipe; 8. a blowing mechanism; 81. a stabilizing column; 82. a mounting table; 83. a pressurizing box; 84. a wind wheel; 85. a diversion air pipe; 86. a sealing plate; 87. an air distribution chamber; 88. a one-way valve; 89. a tuyere; 9. and (5) pressing the wheel.
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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1:
Referring to fig. 1-2, a coating gun for single-side blowing lamination of copper-clad plate comprises a fixing frame 1, an adjusting mechanism 2 is arranged below the fixing frame 1, a gun head 3 is movably connected to the lower end of the adjusting mechanism 2, an auxiliary rod 4 is movably connected to the upper left end of the gun head 3 downwards, a rubber feeding pipe 5 is arranged on the upper end of the gun head 3 near the left side of the auxiliary rod 4, a spray head 6 is arranged at the lower left end of the gun head 3, an air feeding pipe 7 is arranged at the upper right end of the gun head 3, an air blowing mechanism 8 is arranged at the position of the gun head 3 corresponding to the air feeding pipe 7, and a lamination wheel 9 is arranged at the right end of the gun head 3.
Wherein, adjustment mechanism 2 includes positioning disk 21, and the front side of positioning disk 21 is provided with hydraulic push rod 22, and hydraulic push rod 22's middle part is provided with gag lever post 23, and hydraulic push rod 22's lower extreme is provided with push rod 24.
The hydraulic push rod 22 is fixedly provided with a sliding block matched with the arc-shaped groove on the positioning disk 21, and the lower part of the hydraulic push rod is provided with a hinging rod which is movably connected with the auxiliary rod 4.
Wherein, the upper end of the limiting rod 23 is arranged in a horizontal groove on the fixing frame 1.
Wherein, push rod 24 lower extreme is articulated with rifle head 3 middle part.
According to the coating gun for the single-side blowing and pressing of the coating glue on the copper-clad plate, the spraying angle of the coating gun is controlled through the adjusting mechanism 2 hung on the fixing frame 1, the best spraying effect is sought, the sliding block matched with the arc-shaped groove on the positioning disc 21 is fixedly arranged on the hydraulic push rod 22, the deflection angle of the hydraulic push rod 22 connected with the whole gun head 3 is adjusted, meanwhile, the lower end of the push rod 24 is hinged with the middle part of the gun head 3, the auxiliary rod 4 is hinged with the left side of the gun head 3 to form a three-link mechanism, the length of the push rod 24 is changed by pushing the hydraulic push rod 22, the gun head 3 can be controlled to rotate, the degree of freedom of adjusting the gun head 3 is increased, the degree of freedom of the adjustment of the gun head 3 is adjusted in a large range, the coating gun head can be adapted to the plate surface spraying of different positions, and the universality of equipment is improved.
Example 2:
Referring to fig. 3-4, a coating gun for single-side blowing and laminating of copper-clad plate comprises a fixing frame 1, an adjusting mechanism 2 is arranged below the fixing frame 1, a gun head 3 is movably connected to the lower end of the adjusting mechanism 2, an auxiliary rod 4 is movably connected to the upper left end of the gun head 3 downwards, a rubber feeding pipe 5 is arranged on the upper end of the gun head 3 close to the left side of the auxiliary rod 4, a spray head 6 is arranged at the lower left end of the gun head 3, an air feeding pipe 7 is arranged at the upper right end of the gun head 3, an air blowing mechanism 8 is arranged at the position of the gun head 3 corresponding to the air feeding pipe 7, and a laminating wheel 9 is arranged at the right end of the gun head 3.
Wherein, the mechanism 8 of blowing includes stable post 81, and stable post 81's outside is fixed to be provided with mount table 82, and the below both sides of mount table 82 are provided with two pressure boost boxes 83, and the inside of pressure boost box 83 is provided with wind wheel 84, and the below of wind wheel 84 is provided with water conservancy diversion tuber pipe 85, and stable post 81's lower extreme outside is provided with shrouding 86, and shrouding 86's below is provided with air distribution chamber 87, and air distribution chamber 87's outside is provided with a plurality of check valves 88, and air distribution chamber 87's below is provided with a plurality of tuyere 89.
Wherein, the vertical position of the mounting table 82 on the stabilizing column 81 is adjustable, and the outside thereof is provided with an air duct through which air flows.
Wherein, the wind wheel 84 is opposite to the diversion wind pipe 85, and the upper end thereof is coupled with the driving motor.
Wherein, the wind nozzles 89 are mutually independent, and the upper ends of the wind nozzles 89 are communicated with the wind distribution chamber 87 to correspond to different channels and different wind outlet proportions of the diversion wind pipes 85.
In the spraying process, in order to control the influence of wind power and blowing angles on the pre-drying effect, the glue is ensured to be in a semi-solidification state when the laminating wheel 9 is laminated, the pressurizing box 83 pressurizes clean gas in the air pipe 7, and then the clean gas is stably distributed to the flow channels corresponding to all the air nozzles 89 in the air distribution chamber 87 through the air guide pipe 85, so that the air is blown out from different air nozzles 89 at different flow rates, and the height of the mounting table 82 and the rotating speed of the air wheel 84 are adjusted to find the optimal blowing position and air quantity until the requirements are met.
Example 3:
Referring to fig. 1-4, a coating gun for single-side blowing and laminating of copper-clad plates comprises a fixing frame 1, an adjusting mechanism 2 is arranged below the fixing frame 1, a gun head 3 is movably connected to the lower end of the adjusting mechanism 2, an auxiliary rod 4 is movably connected to the upper left end of the gun head 3 downwards, a rubber feeding pipe 5 is arranged on the upper end of the gun head 3 close to the left side of the auxiliary rod 4, a spray head 6 is arranged at the lower left end of the gun head 3, an air feeding pipe 7 is arranged at the upper right end of the gun head 3, an air blowing mechanism 8 is arranged at the position of the gun head 3 corresponding to the air feeding pipe 7, and a laminating wheel 9 is arranged at the right end of the gun head 3.
Wherein, adjustment mechanism 2 includes positioning disk 21, and the front side of positioning disk 21 is provided with hydraulic push rod 22, and hydraulic push rod 22's middle part is provided with gag lever post 23, and hydraulic push rod 22's lower extreme is provided with push rod 24.
The hydraulic push rod 22 is fixedly provided with a sliding block matched with the arc-shaped groove on the positioning disk 21, and the lower part of the hydraulic push rod is provided with a hinging rod which is movably connected with the auxiliary rod 4.
Wherein, the upper end of the limiting rod 23 is arranged in a horizontal groove on the fixing frame 1.
Wherein, push rod 24 lower extreme is articulated with rifle head 3 middle part.
Wherein, the mechanism 8 of blowing includes stable post 81, and stable post 81's outside is fixed to be provided with mount table 82, and the below both sides of mount table 82 are provided with two pressure boost boxes 83, and the inside of pressure boost box 83 is provided with wind wheel 84, and the below of wind wheel 84 is provided with water conservancy diversion tuber pipe 85, and stable post 81's lower extreme outside is provided with shrouding 86, and shrouding 86's below is provided with air distribution chamber 87, and air distribution chamber 87's outside is provided with a plurality of check valves 88, and air distribution chamber 87's below is provided with a plurality of tuyere 89.
Wherein, the vertical position of the mounting table 82 on the stabilizing column 81 is adjustable, and the outside thereof is provided with an air duct through which air flows.
Wherein, the wind wheel 84 is opposite to the diversion wind pipe 85, and the upper end thereof is coupled with the driving motor.
Wherein, the wind nozzles 89 are mutually independent, and the upper ends of the wind nozzles 89 are communicated with the wind distribution chamber 87 to correspond to different channels and different wind outlet proportions of the diversion wind pipes 85.
According to the coating gun for the single-side blowing and pressing of the coating glue on the copper-clad plate, the spraying angle of the coating gun is controlled through the adjusting mechanism 2 hung on the fixing frame 1, the best spraying effect is sought, the sliding block matched with the arc-shaped groove on the positioning disc 21 is fixedly arranged on the hydraulic push rod 22, the deflection angle of the hydraulic push rod 22 connected with the whole gun head 3 is adjusted, meanwhile, the lower end of the push rod 24 is hinged with the middle part of the gun head 3, the auxiliary rod 4 is hinged with the left side of the gun head 3 to form a three-link mechanism, the length of the push rod 24 is changed by pushing the hydraulic push rod 22, the gun head 3 can be controlled to rotate, the degree of freedom of adjusting the gun head 3 is increased, the degree of freedom of the adjustment of the gun head 3 is adjusted in a large range, the coating gun head can be adapted to the plate surface spraying of different positions, and the universality of equipment is improved.
In order to ensure the spraying effect and the spraying efficiency, after the spray head 6 on the left side of the gun head 3 sprays the glue downwards, the spray head adopts a mode of blowing off before press coating, and the spray head is directly semi-solidified and formed after press coating, so that the spray head can effectively control the flow of the spray head after coating due to gravity, influences the coating effect, simultaneously greatly saves the drying time and improves the production efficiency.
In the spraying process, in order to control the influence of wind power and blowing angles on the pre-drying effect, the glue is ensured to be in a semi-solidification state when the laminating wheel 9 is laminated, the pressurizing box 83 pressurizes clean gas in the air pipe 7, and then the clean gas is stably distributed to the flow channels corresponding to all the air nozzles 89 in the air distribution chamber 87 through the air guide pipe 85, so that the air is blown out from different air nozzles 89 at different flow rates, and the height of the mounting table 82 and the rotating speed of the air wheel 84 are adjusted to find the optimal blowing position and air quantity until the requirements are met.
Working principle: according to the coating gun for the single-side blowing and pressing of the coating glue on the copper-clad plate, the spraying angle of the coating gun is controlled through the adjusting mechanism 2 hung on the fixing frame 1, the best spraying effect is sought, the sliding block matched with the arc-shaped groove on the positioning disc 21 is fixedly arranged on the hydraulic push rod 22, the deflection angle of the hydraulic push rod 22 connected with the whole gun head 3 is adjusted, meanwhile, the lower end of the push rod 24 is hinged with the middle part of the gun head 3, the auxiliary rod 4 is hinged with the left side of the gun head 3 to form a three-link mechanism, the length of the push rod 24 is changed by pushing the hydraulic push rod 22, the gun head 3 can be controlled to rotate, the degree of freedom of adjusting the gun head 3 is increased, the degree of freedom of the adjustment of the gun head 3 is adjusted in a large range, the coating gun head can be adapted to the plate surface spraying of different positions, and the universality of equipment is improved.
In order to ensure the spraying effect and the spraying efficiency, after the spray head 6 on the left side of the gun head 3 sprays the glue downwards, the spray head adopts a mode of blowing off before press coating, and the spray head is directly semi-solidified and formed after press coating, so that the spray head can effectively control the flow of the spray head after coating due to gravity, influences the coating effect, simultaneously greatly saves the drying time and improves the production efficiency.
In the spraying process, in order to control the influence of wind power and blowing angles on the pre-drying effect, the glue is ensured to be in a semi-solidification state when the laminating wheel 9 is laminated, the pressurizing box 83 pressurizes clean gas in the air pipe 7, and then the clean gas is stably distributed to the flow channels corresponding to all the air nozzles 89 in the air distribution chamber 87 through the air guide pipe 85, so that the air is blown out from different air nozzles 89 at different flow rates, and the height of the mounting table 82 and the rotating speed of the air wheel 84 are adjusted to find the optimal blowing position and air quantity until the requirements are met.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a coating rifle of copper-clad plate unilateral blowing lamination, includes mount (1), its characterized in that: the utility model discloses a gun structure, including fixing frame (1), gun structure, nozzle (3), air supply pipe (7), air supply pipe (8), air supply pipe (7) are provided with in the below of fixing frame (1), the lower extreme swing joint of adjustment mechanism (2) has gun head (3), and left side upper end swing joint of gun head (3) has auxiliary rod (4) downwards, the left side that is close to auxiliary rod (4) on gun head (3) upper end is provided with rubber supply pipe (5), the left side lower extreme of gun head (3) is provided with shower nozzle (6), the right side upper end of gun head (3) is provided with air supply pipe (7), the position that gun head (3) corresponds air supply pipe (7) is provided with air blowing mechanism (8), the right-hand member of gun head (3) is provided with press coverage wheel (9).
2. The coating gun for single-sided blowing lamination of copper-clad plates according to claim 1, wherein the coating gun is characterized in that: the adjusting mechanism (2) comprises a positioning disc (21), a hydraulic push rod (22) is arranged on the front side of the positioning disc (21), a limit rod (23) is arranged in the middle of the hydraulic push rod (22), and a pushing rod (24) is arranged at the lower end of the hydraulic push rod (22).
3. The coating gun for single-sided blowing lamination of copper-clad plate according to claim 2, wherein: the hydraulic push rod (22) is fixedly provided with a sliding block matched with the arc-shaped groove on the positioning disc (21), and the lower part of the hydraulic push rod is provided with a hinging rod which is movably connected with the auxiliary rod (4).
4. The coating gun for single-sided blowing lamination of copper-clad plate according to claim 2, wherein: the upper end of the limiting rod (23) is arranged in a horizontal groove on the fixing frame (1).
5. The coating gun for single-sided blowing lamination of copper-clad plate according to claim 2, wherein: the lower end of the pushing rod (24) is hinged with the middle part of the gun head (3).
6. The coating gun for single-sided blowing lamination of copper-clad plates according to claim 1, wherein the coating gun is characterized in that: the utility model provides a blowing mechanism (8) is including stabilizing post (81), the outside of stabilizing post (81) is fixed to be provided with mount table (82), the below both sides of mount table (82) are provided with two pressure boost boxes (83), the inside of pressure boost box (83) is provided with wind wheel (84), the below of wind wheel (84) is provided with water conservancy diversion tuber pipe (85), the lower extreme outside of stabilizing post (81) is provided with shrouding (86), the below of shrouding (86) is provided with cloth plenum (87), the outside of cloth plenum (87) is provided with a plurality of check valves (88), the below of cloth plenum (87) is provided with a plurality of tuyere (89).
7. The coating gun for single-sided blowing lamination of copper-clad plates according to claim 6, wherein the coating gun is characterized in that: the vertical position of the mounting table (82) on the stabilizing column (81) can be adjusted, and an air duct for air to flow in is arranged on the outer side of the mounting table.
8. The coating gun for single-sided blowing lamination of copper-clad plates according to claim 6, wherein the coating gun is characterized in that: the wind wheel (84) is opposite to the diversion air pipe (85), and the upper end of the wind wheel is coupled with the driving motor.
9. The coating gun for single-sided blowing lamination of copper-clad plates according to claim 6, wherein the coating gun is characterized in that: the air nozzles (89) are mutually independent, and the upper ends of the air nozzles are communicated with the air distribution chamber (87) to correspond to different channels and different air outlet proportions of the diversion air pipes (85).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322432705.8U CN221208713U (en) | 2023-09-08 | 2023-09-08 | Coating gun for single-side blowing lamination of copper-clad plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322432705.8U CN221208713U (en) | 2023-09-08 | 2023-09-08 | Coating gun for single-side blowing lamination of copper-clad plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221208713U true CN221208713U (en) | 2024-06-25 |
Family
ID=91542407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322432705.8U Active CN221208713U (en) | 2023-09-08 | 2023-09-08 | Coating gun for single-side blowing lamination of copper-clad plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221208713U (en) |
-
2023
- 2023-09-08 CN CN202322432705.8U patent/CN221208713U/en active Active
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