CN214572232U - Automatic phosphorization device - Google Patents
Automatic phosphorization device Download PDFInfo
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- CN214572232U CN214572232U CN202120765390.7U CN202120765390U CN214572232U CN 214572232 U CN214572232 U CN 214572232U CN 202120765390 U CN202120765390 U CN 202120765390U CN 214572232 U CN214572232 U CN 214572232U
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Abstract
The utility model provides an automatic phosphorization device relates to metal surface treatment technical field, has solved the anticorrosive phosphorization technology in metal accessories surface that exists among the prior art and has adopted manual operation, the technical problem of inefficiency. The automatic phosphating device comprises a horizontal moving mechanism, wherein a plurality of phosphating process pools are arranged below the horizontal moving mechanism and are sequentially connected; the horizontal moving mechanism is provided with a lifting mechanism, the lifting mechanism can reciprocate on the horizontal moving mechanism, the lifting mechanism is connected with a roller frame, the lifting mechanism drives the roller frame to move up and down, the hexagonal roller is connected to the roller frame through a rolling shaft, and the hexagonal roller can fall into the phosphating process pool under the driving of the lifting mechanism; the hexagonal cylinder is provided with a gear ring, the gear ring is connected with a transmission gear set, the transmission gear set is connected with a rotating mechanism, and the rotating mechanism can drive the hexagonal cylinder to rotate. The utility model provides an automatic phosphating device with high phosphating efficiency.
Description
Technical Field
The utility model belongs to the technical field of the metal surface treatment technique and specifically relates to an automatic phosphorization device.
Background
The existing metal accessory surface anticorrosion phosphating process generally adopts a string bag to load products, different processes are respectively processed in a plurality of cement pools, and finally the surface treatment process is completed by drying, so that the process not only occupies a large building area, but also is completed manually, heavy physical labor is not only low in efficiency, but also cannot accurately master the operation time of each process, time and labor are wasted, and partial products are inconsistent in color and luster, and cannot meet standard requirements for rework.
The applicant has found that the prior art has at least the following technical problems: the existing metal fitting surface anticorrosion phosphating process adopts manual operation and is low in efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an automatic phosphorization device to solve the anticorrosive phosphorization technology in metal accessories surface that exists among the prior art and adopt manual operation, the technical problem of inefficiency. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides an automatic phosphating device, which comprises a horizontal moving mechanism, wherein a plurality of phosphating process pools are arranged below the horizontal moving mechanism, are sequentially connected and are respectively used for degreasing, washing, surface adjustment, phosphating and drying of products to be phosphated;
the horizontal moving mechanism is provided with a lifting mechanism, the lifting mechanism can reciprocate on the horizontal moving mechanism, the lifting mechanism is connected with a roller frame, the lifting mechanism drives the roller frame to move up and down, the hexagonal roller is connected to the roller frame through a roller, and the hexagonal roller can fall into the phosphating process pool under the driving of the lifting mechanism;
the hexagonal cylinder is provided with a gear ring, the gear ring is connected with a transmission gear set, the transmission gear set is connected with a rotating mechanism, and the rotating mechanism can drive the hexagonal cylinder to rotate.
Preferably, the phosphating process pool is a plastic box, and a plurality of plastic boxes are connected in rows along the moving direction of the horizontal moving mechanism.
Preferably, the horizontal movement mechanism comprises a guide rail, a slider and a horizontal driving mechanism, the slider is arranged on the guide rail, the slider is connected with the lifting mechanism, and the horizontal driving mechanism drives the lifting mechanism to reciprocate on the guide rail.
Preferably, the lifting mechanism is a crown block.
Preferably, the rotating mechanism comprises a speed reducer and a driving gear, the driving gear is connected with the transmission gear set, and the speed reducer drives the driving gear to rotate to drive the hexagonal drum to rotate.
Preferably, the rotating mechanism is arranged on one side of each phosphating process pool, and when the lifting mechanism drives the hexagonal drum to descend to the phosphating process pools, the driving gear is connected with the transmission gear in a matching mode.
Preferably, the automatic phosphating device further comprises a controller, and the horizontal moving mechanism, the lifting mechanism and the rotating mechanism are all connected with the controller.
Preferably, 12 phosphating process pools, namely a first degreasing pool, a second degreasing pool, a first water washing pool, a second water washing pool, an exchange pool, a surface adjusting pool, a first phosphating pool, a second phosphating pool, a third phosphating pool, a hot water washing pool and a drying pool are arranged below the horizontal moving mechanism.
Preferably, the phosphating process tank further comprises a pickling tank, a third water washing tank and a fourth water washing tank.
Preferably, the hexagonal drum is provided with a liquid inlet hole.
Preferably, the hexagonal drum is made of a plastic plate.
The utility model has the advantages that: the utility model provides an automatic phosphating device, hexagonal cylinder are used for depositing the product of waiting to bonderize, and hexagonal cylinder is made by resistant erosion material such as plastic slab, soaks in the phosphating process pond through using hexagonal cylinder to replace the string bag, improves hexagonal cylinder life; secondly, the rotating mechanism and the transmission gear can drive the hexagonal roller to rotate, the hexagonal roller can fully clean dirt of products by rolling and rotating in the phosphating process pool, the cleaning efficiency is improved by 300%, the using amount of hydrochloric acid is reduced, and the waste acid is effectively prevented from permeating underground to cause pollution; in addition, the horizontal moving mechanism can drive the lifting mechanism and the hexagonal roller to move in a reciprocating mode, the hexagonal roller is sequentially transmitted to the next procedure according to process requirements, all the procedures are completed through mechanical control, and the problem of low efficiency caused by manual operation is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the structure of an automatic phosphating device of the utility model;
FIG. 2 is a diagram illustrating the operation of the automatic phosphating device according to the invention;
FIG. 3 is a partial schematic view of an automated phosphating apparatus according to the invention;
FIG. 4 is a process flow diagram of a first embodiment of the invention;
FIG. 5 is a process flow diagram of a second embodiment of the invention;
FIG. 6 is a process flow diagram of a third embodiment of the present invention.
In figure 1, a horizontal moving mechanism; 2. a lifting mechanism; 3. a roller frame; 4. a hexagonal drum; 5. a phosphating process pool; 11. a guide rail; 12. a slider; 13. a horizontal driving mechanism; 41. a gear ring; 42. a drive gear set; 43. a speed reducer; 44. a driving gear; 45. a rotation mechanism.
Detailed Description
The contents of the present invention and the differences between the present invention and the prior art can be understood with reference to fig. 1 to 6 and the text. The invention will be described in further detail below (including the preferred embodiments) with reference to the drawings and illustrative examples of some alternative embodiments of the invention. It should be noted that: any technical features and any technical solutions in this embodiment are one or more of various optional technical features or optional technical solutions, and for the sake of brevity, this document cannot exhaust all the alternative technical features and alternative technical solutions of the present invention, and it is not convenient for each embodiment of the technical features to emphasize that it is one of various optional embodiments, so those skilled in the art should know that: can replace any technical means or combine two or more technical means or technical characteristics of the utility model provides an arbitrary or more technical means or technical characteristics mutually and obtain new technical scheme. Any technical features and any technical solutions in the present embodiment do not limit the scope of the present invention, and the scope of the present invention should include any alternative technical solutions that can be conceived by those skilled in the art without creative efforts and new technical solutions that can be obtained by combining any two or more technical means or technical features provided by the present invention with each other by those skilled in the art.
In the description of the present invention, it is to be noted that "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like are used in an orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is also to be understood that the terms "mounted", "connected" and "connected", unless expressly specified or limited otherwise, are intended to be interpreted broadly, as meaning either a fixed connection or a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.
The utility model provides an automatic phosphating device with high phosphating efficiency.
The technical solution provided by the present invention will be explained in more detail with reference to fig. 1 to 6.
The utility model provides an automatic phosphating device, which comprises a horizontal moving mechanism, wherein a plurality of phosphating process pools are arranged below the horizontal moving mechanism, are sequentially connected and are respectively used for degreasing, washing, surface adjustment, phosphating and drying of products to be phosphated;
the horizontal moving mechanism is provided with a lifting mechanism, the lifting mechanism can reciprocate on the horizontal moving mechanism, the lifting mechanism is connected with a roller frame, the lifting mechanism drives the roller frame to move up and down, the hexagonal roller is connected to the roller frame through a roller, and the hexagonal roller can fall into the phosphating process pool under the driving of the lifting mechanism;
the hexagonal cylinder is provided with a gear ring, the gear ring is connected with a transmission gear set, the transmission gear set is connected with a rotating mechanism, and the rotating mechanism can drive the hexagonal cylinder to rotate.
The utility model provides an automatic phosphating device, hexagonal cylinder are used for depositing the product of waiting to bonderize, and hexagonal cylinder is made by resistant erosion material such as plastic slab, soaks in the phosphating process pond through using hexagonal cylinder to replace the string bag, improves hexagonal cylinder life; secondly, the rotating mechanism and the transmission gear can drive the hexagonal roller to rotate, the hexagonal roller can fully clean dirt of products by rolling and rotating in the phosphating process pool, the cleaning efficiency is improved by 300%, the using amount of hydrochloric acid is reduced, and the waste acid is effectively prevented from permeating underground to cause pollution; in addition, the horizontal moving mechanism can drive the lifting mechanism and the hexagonal roller to move in a reciprocating mode, the hexagonal roller is sequentially transmitted to the next procedure according to process requirements, all the procedures are completed through mechanical control, and the problem of low efficiency caused by manual operation is solved.
As an alternative embodiment, the phosphorization process pool is a plastic box, and a plurality of plastic boxes are connected in a row along the moving direction of the horizontal moving mechanism.
The plastic box greatly reduces the occupied area and avoids the defect that the cement pool is damaged by chemical erosion.
As an optional implementation manner, the horizontal moving mechanism includes a guide rail, a slider, and a horizontal driving mechanism, the slider is disposed on the guide rail, the slider is connected with the lifting mechanism, and the horizontal driving mechanism drives the lifting mechanism to reciprocate on the guide rail.
In an alternative embodiment, the lifting mechanism is a crown block.
As an optional implementation manner, the rotating mechanism includes a speed reducer and a driving gear, the driving gear is connected to the transmission gear set, and the speed reducer drives the driving gear to rotate to drive the hexagonal drum to rotate.
The speed reducer drives the driving gear to rotate, the driving gear is matched with the transmission gear set, and the transmission gear set is matched with the gear ring to drive the hexagonal drum to rotate.
As an optional implementation mode, the rotating mechanism is arranged on one side of each phosphating process pool, and when the lifting mechanism drives the hexagonal drum to descend to the phosphating process pool, the driving gear is connected with the transmission gear in a matching mode.
As an optional implementation mode, the automatic phosphorization device further comprises a controller, and the horizontal moving mechanism, the lifting mechanism and the rotating mechanism are all connected with the controller.
As an optional implementation mode, 12 phosphating process pools, namely a first degreasing pool, a second degreasing pool, a first water washing pool, a second water washing pool, an exchange pool, a surface adjusting pool, a first phosphating pool, a second phosphating pool, a third water washing pool, a hot water cleaning pool and a drying pool, are arranged below the horizontal moving mechanism.
As an optional embodiment, the phosphating process tank further comprises an acid washing tank, a third water washing tank and a fourth water washing tank.
As an optional embodiment, the hexagonal drum is provided with a liquid inlet hole. Liquid in the phosphating process tank can enter the hexagonal roller through the liquid inlet hole to fully soak the workpiece to be phosphatized.
As an alternative embodiment, the hexagonal drum is made of a plastic plate.
Example 1:
the utility model provides an automatic phosphating device, including horizontal movement mechanism 1, horizontal movement mechanism 1 contains guide rail 11, slider 12 and horizontal drive mechanism 13, slider 12 sets up on guide rail 11, slider 12 is connected with elevating system 2, horizontal drive mechanism 13 drive elevating system 2 on guide rail 11 reciprocating motion;
12 phosphating process pools 5 are arranged below the horizontal moving mechanism 1, and the 12 phosphating process pools 5 are sequentially connected and respectively comprise a first degreasing pool, a second degreasing pool, a first water washing pool, a second water washing pool, an exchange pool, a surface adjusting pool, a first phosphating pool, a second phosphating pool, a third water washing pool, a hot water washing pool and a drying pool and are respectively used for degreasing, water washing, surface adjusting, phosphating and drying of products to be phosphated;
the lifting mechanism 2 is connected with a roller frame 3, the lifting mechanism 2 drives the roller frame 3 to move up and down, the hexagonal roller 4 is connected to the roller frame 3 through a rolling shaft, and the hexagonal roller 4 can fall into the phosphating process pool 5 under the driving of the lifting mechanism 2;
be provided with gear ring 41 on the hexagonal cylinder 4, be connected with drive gear group 42 on the gear ring 41, be connected with slewing mechanism 45 on the drive gear group 42, slewing mechanism 45 can drive hexagonal cylinder 4 rotates.
The rotating mechanism 45 comprises a speed reducer 43 and a driving gear 44, the driving gear 44 is connected with the transmission gear set 42, and the speed reducer 43 drives the driving gear 44 to rotate to drive the hexagonal drum 4 to rotate;
the rotating mechanism 45 is arranged on one side of each phosphating process pool 5, and when the lifting mechanism 2 drives the hexagonal drum 4 to descend to the phosphating process pool 5, the driving gear 44 is connected with the transmission gear set 42 in a matched mode.
A phosphorization production process sequentially comprises the following steps:
(1) entering a cylinder: a plurality of products to be phosphated are loaded into a hexagonal roller 4;
(2) degreasing: the lifting mechanism 2 puts the hexagonal roller 4 filled with the product to be phosphated into a first degreasing tank for degreasing treatment, wherein the degreasing temperature is 70 ℃, and the degreasing time is 5 min; then the lifting mechanism 2 lifts the hexagonal roller 4 filled with the product to be phosphated;
(3) and (2) degreasing II: the horizontal moving mechanism 1 moves the hexagonal roller 4 filled with the product to be phosphatized to the upper part of the second degreasing tank, the lifting mechanism 2 places the hexagonal roller 4 filled with the product to be phosphatized into the second degreasing tank for degreasing treatment, the degreasing temperature is 70 ℃, and the degreasing time is 4 min; then the lifting mechanism 2 lifts the hexagonal roller 4 filled with the product to be phosphated;
(4) cleaning with water: the horizontal moving mechanism 1 moves the hexagonal roller 4 filled with the product to be phosphated to the upper part of the first water washing pool, and the lifting mechanism 2 puts the hexagonal roller 4 filled with the product to be phosphated into the first water washing pool for rinsing for 1 min; then the lifting mechanism 2 lifts the hexagonal roller 4 filled with the product to be phosphated;
(5) and (2) cleaning with water: the horizontal moving mechanism 1 moves the hexagonal roller 4 filled with the product to be phosphated to the upper part of the second water washing pool, and the lifting mechanism 2 puts the hexagonal roller 4 filled with the product to be phosphated into the second water washing pool for rinsing for 2 min; then the lifting mechanism 2 lifts the hexagonal roller 4 filled with the product to be phosphated;
(6) and (3) performing table tone processing: the horizontal moving mechanism 1 moves the hexagonal roller 4 filled with the product to be phosphated to the upper part of the surface regulation pool, and the lifting mechanism 2 places the hexagonal roller 4 filled with the product to be phosphated into the surface regulation pool for surface regulation treatment, wherein the surface regulation time is 1 min; then the lifting mechanism 2 lifts the hexagonal roller 4 filled with the product to be phosphated;
(7) phosphorization is as follows: the horizontal moving mechanism 1 moves the hexagonal roller 4 filled with the product to be phosphated to the upper part of the first phosphating pool, and the lifting mechanism 2 puts the hexagonal roller 4 filled with the product to be phosphated after surface adjustment into the first phosphating pool for phosphating treatment, wherein the phosphating temperature is 30 ℃ and the phosphating time is 6 min; then the lifting mechanism 2 lifts the hexagonal roller 4 filled with the product to be phosphated;
(8) and II, phosphorization: the horizontal moving mechanism 1 moves the hexagonal roller 4 filled with the product to be phosphated to the upper part of the second phosphating pool, and the lifting mechanism 2 places the hexagonal roller 4 filled with the product to be phosphated into the second phosphating pool for phosphating treatment, wherein the phosphating temperature is 30 ℃ and the phosphating time is 6 min; then the lifting mechanism 2 lifts the hexagonal roller 4 filled with the product to be phosphated;
(9) and (3) phosphorization: the horizontal moving mechanism 1 moves the hexagonal roller 4 filled with the product to be phosphated to the upper part of the third phosphating pool, and the lifting mechanism 2 places the hexagonal roller 4 filled with the product to be phosphated into the third phosphating pool for phosphating treatment, wherein the phosphating temperature is 30 ℃ and the phosphating time is 6 min; then the lifting mechanism 2 lifts the hexagonal roller 4 filled with the product to be phosphated;
(10) washing with clear water: the horizontal moving mechanism 1 moves the hexagonal roller 4 filled with the product to be phosphated to the upper part of a third water washing pool, and the lifting mechanism 2 puts the hexagonal roller 4 filled with the product to be phosphated into the third water washing pool for rinsing for 1 min; then the lifting mechanism 2 lifts the hexagonal roller 4 filled with the product to be phosphated;
(11) hot water washing: the horizontal moving mechanism 1 moves the hexagonal roller 4 filled with the product to be phosphated to the upper part of a hot water cleaning pool, the lifting mechanism 2 puts the hexagonal roller 4 filled with the product to be phosphated into the hot water cleaning pool for rinsing, the temperature of the hot water is 70 ℃, and the rinsing time is 1 min; then the lifting mechanism 2 lifts the hexagonal roller 4 filled with the product to be phosphated;
(12) drying: the horizontal moving mechanism 1 moves the hexagonal drum 4 filled with the product to be phosphatized to the upper part of the drying pool, the lifting mechanism 2 puts the hexagonal drum 4 filled with the product to be phosphatized into the drying pool, the flooding pool is heated to 120 ℃, and the drying time is 6 min. Then the lifting mechanism 2 lifts the hexagonal roller 4 filled with the product to be phosphated;
(13) discharging the cylinder: taking out the phosphated product from the hexagonal roller.
Example 2:
the present embodiment 2 differs from embodiment 1 in that: elevating system 2 is provided with two sets ofly, and two sets of elevating system 2 realize the exchange of roller frame 3 through the exchange groove, and through setting up two sets of elevating system 2, two sets of elevating system 2 are responsible for 6 bonderizing technology ponds 5 respectively, can improve bonderizing efficiency.
Example 3:
the present embodiment 3 differs from embodiment 1 in that: the phosphating process pool also comprises a pickling pool, a third water washing pool and a fourth water washing pool;
before the second cleaning and surface conditioning treatment in the embodiment 1, the hexagonal drum 4 containing the product to be phosphated is moved to the upper part of the pickling tank through the horizontal moving mechanism 1, the hexagonal drum 4 containing the product to be phosphated is placed into the pickling tank for rust removal treatment by the lifting mechanism 2 for 1min, and then the hexagonal drum 4 containing the product to be phosphated is lifted by the lifting mechanism 2;
then:
the horizontal moving mechanism 1 moves the hexagonal roller 4 filled with the product to be phosphated to the upper part of a fourth water washing pool, and the lifting mechanism 2 puts the hexagonal roller 4 filled with the product to be phosphated into the fourth water washing pool for rinsing for 2 min; then the lifting mechanism 2 lifts the hexagonal roller 4 filled with the product to be phosphated;
then the hexagonal roller 4 filled with the product to be phosphatized is moved to the upper part of a fifth clean water tank by the horizontal moving mechanism 1, and the hexagonal roller 4 filled with the product to be phosphatized is put into the fifth clean water tank for rinsing by the lifting mechanism 2 for 2 min; the lifting mechanism 2 then raises the hexagonal drum 4 containing the product to be phosphated.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An automatic phosphating device is characterized by comprising a horizontal moving mechanism, wherein a plurality of phosphating process pools are arranged below the horizontal moving mechanism and are sequentially connected and are respectively used for degreasing, washing, surface adjustment, phosphating and drying of products to be phosphated;
the horizontal moving mechanism is provided with a lifting mechanism, the lifting mechanism can reciprocate on the horizontal moving mechanism, the lifting mechanism is connected with a roller frame, the lifting mechanism drives the roller frame to move up and down, the hexagonal roller is connected to the roller frame through a roller, and the hexagonal roller can fall into the phosphating process pool under the driving of the lifting mechanism;
the hexagonal cylinder is provided with a gear ring, the gear ring is connected with a transmission gear set, the transmission gear set is connected with a rotating mechanism, and the rotating mechanism can drive the hexagonal cylinder to rotate.
2. The automatic phosphating device according to claim 1, wherein the phosphating process tank is a plastic box, and a plurality of plastic boxes are connected in a row along the moving direction of the horizontal moving mechanism.
3. The automated phosphating device according to claim 1, wherein the horizontal moving mechanism comprises a guide rail, a slide block and a horizontal driving mechanism, the slide block is arranged on the guide rail, the slide block is connected with the lifting mechanism, and the horizontal driving mechanism drives the lifting mechanism to reciprocate on the guide rail.
4. The automated phosphating apparatus of claim 1, wherein the lifting mechanism is a crown block.
5. The automated phosphating device according to claim 1, wherein the rotating mechanism comprises a speed reducer and a driving gear, the driving gear is connected with the transmission gear set, and the speed reducer drives the driving gear to rotate so as to drive the hexagonal roller to rotate.
6. The automatic phosphating device according to claim 5, wherein the rotating mechanism is arranged on one side of each phosphating process pool, and when the lifting mechanism drives the hexagonal roller to descend to the phosphating process pool, the driving gear is matched and connected with the transmission gear.
7. The automatic phosphating device according to claim 1, further comprising a controller, wherein the horizontal moving mechanism, the lifting mechanism and the rotating mechanism are all connected with the controller.
8. The automatic phosphating device according to claim 1, wherein 12 phosphating process pools, namely a first degreasing pool, a second degreasing pool, a first water washing pool, a second water washing pool, an exchange pool, a surface adjusting pool, a first phosphating pool, a second phosphating pool, a third water washing pool, a hot water washing pool and a drying pool are arranged below the horizontal moving mechanism.
9. The automated phosphating device according to claim 1, wherein the hexagonal roller is provided with a liquid inlet hole.
10. The automated phosphating device of claim 1, wherein the hexagonal drum is made of a plastic plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120765390.7U CN214572232U (en) | 2021-04-14 | 2021-04-14 | Automatic phosphorization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120765390.7U CN214572232U (en) | 2021-04-14 | 2021-04-14 | Automatic phosphorization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214572232U true CN214572232U (en) | 2021-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120765390.7U Active CN214572232U (en) | 2021-04-14 | 2021-04-14 | Automatic phosphorization device |
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| Country | Link |
|---|---|
| CN (1) | CN214572232U (en) |
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2021
- 2021-04-14 CN CN202120765390.7U patent/CN214572232U/en active Active
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