Aluminum alloy part surface silver plating equipment

Abstract

The utility model discloses aluminum alloy part surface silver plating equipment, and belongs to the field of metal surface treatment. According to the technical scheme, the aluminum alloy part surface silver plating equipment comprises an electroplating bath, a stirring assembly is rotationally connected in the electroplating bath, a driving mechanism used for driving the stirring assembly to rotate is arranged on the side wall of the electroplating bath, and the driving mechanism is provided with a rotating shaft which is coaxially and fixedly connected with the stirring assembly. An exhaust mechanism is arranged on the side wall of the electroplating bath, a driving part for driving the exhaust mechanism is arranged on the rotating shaft, and a gas nozzle is arranged in the electroplating bath; through the synergistic effect of the stirring assembly and the air pumping and exhausting mechanism, uniform flowing of a plating solution and effective exhausting of air are achieved, meanwhile, the design of the flow guide plate and the filter element is combined, impurities are effectively controlled, and therefore the electroplating device has the advantages that the uniformity of a plating layer is improved, the flowability of the plating solution is improved, the impurity control effect is enhanced, and the air exhausting efficiency is optimized.

Description

Technical Field

[0001] This utility model belongs to the field of metal surface treatment, specifically relating to a silver plating device for aluminum alloy parts. Background Technology

[0002] In the silver plating process on aluminum alloy surfaces, the uniformity, fluidity, and impurity control of the electroplating solution are core factors directly affecting the coating quality. Traditional electroplating equipment faces several technical challenges, severely impacting coating quality and efficiency.

[0003] First, insufficient fluidity of the electroplating solution is a prominent problem. Conventional stirring devices often use fixed blades or unidirectional stirring, resulting in a single flow direction of the plating solution and significant differences in flow velocity in local areas. This uneven flow is particularly noticeable on complex workpiece surfaces, causing uneven distribution of silver ions in the electroplating solution and forming a concentration gradient. As a result, there are significant differences in plating thickness, such as thicker edges and thinner centers, and in severe cases, even "burning" may occur, greatly reducing the uniformity and quality of the plating layer.

[0004] Secondly, the accumulation of impurities severely affects the homogenization of the coating. During the electroplating process, impurities such as metal particles and organic residues gradually deposit with the reaction. Traditional filtration systems struggle to achieve dynamic circulation and purification, causing these impurities to easily adhere to the workpiece surface. This not only results in a rough coating surface but also increases the porosity of the coating, severely affecting its density and uniformity, and reducing its corrosion resistance and appearance quality.

[0005] Third, the issues of gas escape and oxidation cannot be ignored. The retention of air bubbles in the electroplating solution or the introduction of oxidizing gases (such as oxygen) can exacerbate the instability of the solution composition. These gases not only interfere with the current distribution during electroplating but may also cause porosity or oxidation defects in the coating, further compromising the uniformity and integrity of the coating. In existing technologies, gas removal largely relies on external, independent equipment, which is difficult to coordinate with stirring and filtration functions, increasing energy consumption and reducing overall efficiency.

[0006] Although existing technologies have attempted to alleviate the above problems by improving the stirring structure or adding a filtration device, these improvements still have significant drawbacks:

[0007] Separating agitation and filtration is a common problem. Most systems use independent agitation and filtration modules, resulting in excessively long circulation paths for the plating solution and the creation of dead zones in the flow. This not only reduces agitation efficiency but also prevents impurities from being removed in real time, affecting the quality of the plating layer.

[0008] The limited filtration precision also restricts filtration effectiveness. Traditional filter cartridges have fixed pore sizes, making it difficult to adapt to the impurity interception requirements under different flow directions. This can lead to large particles clogging the filter cartridge, or tiny impurities penetrating the cartridge, significantly reducing filtration efficiency.

[0009] Insufficient gas agitation is another significant problem. Conventional air agitation relies solely on an external air pump, often resulting in uneven gas distribution. This method cannot create an effective synergistic effect with mechanical agitation, and its optimization effect on plating solution flow is very limited. Utility Model Content

[0010] The purpose of this application is to provide a silver plating equipment for aluminum alloy parts, which has the advantages of improving the uniformity of the plating layer, improving the fluidity of the plating solution, enhancing the impurity control effect, and optimizing the gas removal efficiency.

[0011] The technical solution adopted in this utility model is as follows:

[0012] A silver plating device for aluminum alloy parts includes an electroplating tank, a stirring assembly rotatably connected inside the electroplating tank, a drive mechanism for driving the stirring assembly to rotate on the side wall of the electroplating tank, the drive mechanism having a rotating shaft coaxially and fixedly connected to the stirring assembly, an exhaust mechanism on the side wall of the electroplating tank, a drive part for driving the exhaust mechanism on the rotating shaft, a gas nozzle inside the electroplating tank, and the output end of the exhaust mechanism connected to the gas nozzle.

[0013] Furthermore, this application also proposes that the electroplating tank is provided with a guide plate, and the guide plate is symmetrically arranged with a plurality of guide curved surfaces.

[0014] Furthermore, this application also proposes that the guide plate is symmetrically provided with a plurality of through holes, and a filter element can be detachably connected to each of the through holes.

[0015] Furthermore, this application also proposes that the stirring assembly rotates so that the electroplating solution passes through one side through hole from top to bottom and then through the other side through hole from bottom to top, wherein the filter element pore diameter on the through hole through which the electroplating solution passes from top to bottom is larger than the filter element pore diameter on the through hole through which the electroplating solution passes from bottom to top.

[0016] Furthermore, this application also proposes that the filter element on the through hole through which the electroplating solution passes from top to bottom is installed below the guide plate, and the filter element on the through hole through which the electroplating solution passes from bottom to top is installed above the guide plate.

[0017] Furthermore, this application also proposes that the stirring assembly includes a stirring shaft located in the middle and above the guide plate, and that the stirring shaft has a plurality of stirring blades arranged circumferentially.

[0018] Furthermore, this application also proposes that the exhaust mechanism includes an air cylinder, a piston is slidably connected inside the air cylinder, a push rod is fixedly connected to the bottom of the piston, a cam is coaxially arranged on the rotating shaft, the bottom of the push rod abuts against the side wall of the cam, a spring is fixedly connected between the piston and the inner wall of the air cylinder, an air inlet pipe and an exhaust pipe are provided at the upper end of the air cylinder, a one-way valve is provided on both the air inlet pipe and the exhaust pipe, and the end of the exhaust pipe is connected to a gas nozzle.

[0019] Furthermore, this application also proposes that an air filter is detachably connected inside the air intake pipe.

[0020] Furthermore, this application also proposes that the lower end of the push rod is rotatably connected to an auxiliary pulley.

[0021] Furthermore, this application also proposes that the drive mechanism includes a motor, the output end of which is fixedly connected to the rotating shaft.

[0022] Due to the adoption of the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0023] 1. The agitator ensures the electroplating solution flows fully within the plating tank, avoiding the problem of unidirectional flow. The drive mechanism rotates the agitator via a shaft, ensuring uniform distribution of the electroplating solution throughout the tank. The exhaust mechanism injects gas evenly into the electroplating solution through gas nozzles, further enhancing its fluidity and preventing gas stagnation and the introduction of oxidizing gases. The agitator and exhaust mechanism work together to achieve efficient circulation and uniform flow of the electroplating solution. The even injection of gas through the nozzles prevents gas stagnation and the introduction of oxidizing gases, ensuring stable composition of the solution. By rationally setting the number and position of the agitator blades, the electroplating solution achieves uniform flow within the tank, avoiding significant differences in flow velocity in localized areas, thereby improving the uniformity and density of the coating.

[0024] 2. By incorporating guide plates within the electroplating tank and symmetrically arranging several guiding curved surfaces on these plates, the flow path of the electroplating solution within the tank becomes more scientifically sound and rational. The guiding curved surfaces of the guide plates guide the flow of the electroplating solution, thus avoiding the problem of unidirectional flow in traditional stirring devices. This design ensures uniform flow of the electroplating solution throughout the entire tank, preventing significant differences in flow velocity in localized areas, ensuring a uniform distribution of silver ions in the solution, and preventing variations in coating thickness and "scorching" phenomena.

[0025] 3. By setting several through holes in the flow guide plate, and allowing for the detachable connection of filter cartridges to each hole, more efficient flow and filtration of the electroplating solution within the electroplating tank are achieved. The through holes in the flow guide plate ensure that the electroplating solution forms a uniform flow path within the electroplating tank, avoiding the dead zones found in traditional electroplating equipment. Simultaneously, the detachable filter cartridge design allows users to replace the filter cartridge according to actual needs, ensuring optimal filtration performance.

[0026] 4. The electroplating solution first passes through the through-holes on one side from top to bottom, and then through the through-holes on the other side from bottom to top. The filter element on the through-holes through which the electroplating solution passes from top to bottom has a larger pore size to initially filter out larger particles of impurities; while the filter element on the through-holes through which the solution passes from bottom to top has a smaller pore size to further filter out finer impurities. This achieves dynamic circulation and purification of the electroplating solution, maintaining its cleanliness and improving the uniformity and density of the plating layer.

[0027] 5. The design of the air cylinder, piston, and push rod ensures effective gas extraction and delivery. The cooperation between the cam and the push rod makes the extraction and exhaust process more stable and efficient. Furthermore, an air filter can be installed inside the air inlet pipe to ensure the cleanliness of the air entering the air cylinder and prevent impurities from entering the electroplating solution. A pulley can also be rotatably connected to the lower end of the push rod to reduce friction and improve the smoothness of the push rod's movement. The air filter effectively filters impurities in the air entering the air cylinder, preventing them from affecting the normal operation of the extraction and exhaust mechanism. By installing a pulley at the lower end of the push rod, friction between the push rod and other components can be effectively reduced, thereby ensuring the smoothness and stability of the push rod's movement and contributing to improving the overall efficiency and reliability of the device. Attached Figure Description

[0028] Figure 1 This is one of the structural schematic diagrams of a specific embodiment of the present utility model;

[0029] Figure 2 This is the second structural schematic diagram of a specific embodiment of the present utility model;

[0030] Figure 3 This is a top view of a specific embodiment of the present utility model;

[0031] Figure 4 This is a schematic diagram of the exhaust mechanism in this utility model.

[0032] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0033] In the attached diagram:

[0034] 1. Electroplating tank; 11. Guide plate; 12. Through hole; 13. Filter element; 2. Stirring blade; 3. Motor; 31. Rotating shaft; 32. Cam; 4. Air cylinder; 41. Piston; 42. Push rod; 421. Pulley; 43. Spring; 44. Air inlet pipe; 45. Exhaust pipe; 46. Gas nozzle. Detailed Implementation

[0035] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0036] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0037] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Those skilled in the art will understand that in the silver plating process on aluminum alloy surfaces, the uniformity, fluidity, and impurity control of the electroplating solution are core factors directly affecting the quality of the plating layer. Traditional electroplating equipment often faces technical bottlenecks such as insufficient fluidity of the electroplating solution, impurity accumulation affecting the homogenization of the plating layer, and gas escape and oxidation problems. Although existing technologies have attempted to alleviate the above problems by improving the stirring structure or adding a filtration device, there are still obvious defects such as separation of stirring and filtration, limited filtration accuracy, and insufficient gas agitation.

[0041] Reference Figures 1-4 This application discloses a silver plating device for aluminum alloy parts, including an electroplating tank 1, a stirring assembly rotatably connected inside the electroplating tank 1, and a drive mechanism for driving the stirring assembly to rotate on the side wall of the electroplating tank 1. The drive mechanism has a rotating shaft 31 coaxially and fixedly connected to the stirring assembly. An exhaust mechanism is provided on the side wall of the electroplating tank 1, and a drive part for driving the exhaust mechanism is provided on the rotating shaft 31. A gas nozzle 46 is provided inside the electroplating tank 1, and the output end of the exhaust mechanism is connected to the gas nozzle 46.

[0042] In practical implementation, the agitation component ensures sufficient flow of the electroplating solution within the electroplating tank 1, avoiding the problem of unidirectional flow. The drive mechanism rotates the agitation component via the rotating shaft 31, ensuring uniform distribution of the electroplating solution throughout the tank. The exhaust mechanism evenly injects gas into the electroplating solution through gas nozzles 46, further enhancing its fluidity. It should be noted that the exhaust mechanism uses an external inert gas container to ultimately blow inert gas into the electroplating solution, preventing gas stagnation and the introduction of oxidizing gases.

[0043] The stirring assembly inside the electroplating tank 1 includes a stirring shaft and several stirring blades 2. The stirring blades 2 are arranged circumferentially around the stirring shaft. Through the rotation of the drive mechanism, the stirring blades 2 drive the electroplating solution to circulate. The exhaust mechanism includes an air cylinder 4. A piston 41 is slidably connected inside the air cylinder 4. A push rod 42 is fixedly connected to the bottom of the piston 41. A cam 32 is coaxially arranged on the rotating shaft 31. The bottom of the push rod 42 abuts against the side wall of the cam 32. A spring 43 is fixedly connected between the piston 41 and the inner wall of the air cylinder 4. An air inlet pipe 44 and an exhaust pipe 45 are provided at the upper end of the air cylinder 4. Both the air inlet pipe 44 and the exhaust pipe 45 are equipped with one-way valves. The end of the exhaust pipe 45 is connected to a gas nozzle 46.

[0044] With the above structure, the stirring assembly and the exhaust mechanism work together to achieve efficient circulation and uniform flow of the electroplating solution. Gas is uniformly injected into the electroplating solution through the gas nozzle 46, avoiding gas stagnation and the introduction of oxidizing gases, thus ensuring the stability of the electroplating solution's composition. By rationally setting the number and position of the stirring blades 2, the electroplating solution forms a uniform flow within the electroplating tank 1, avoiding significant differences in flow velocity in local areas, thereby improving the uniformity and density of the coating.

[0045] Compared with existing technologies, the aluminum alloy surface silver plating equipment of this application solves technical bottlenecks such as insufficient fluidity of the electroplating solution, impurity accumulation affecting the homogenization of the coating, and gas escape and oxidation by integrating high-efficiency stirring, dynamic filtration, and gas synergistic circulation. Through the coordinated work of the stirring component and the exhaust mechanism, the electroplating solution forms a uniform flow in the electroplating tank 1, ensuring the uniformity and density of the coating and improving the quality and efficiency of the silver plating process.

[0046] As a preferred embodiment of this application, refer to Figures 1-3 The electroplating tank 1 is equipped with a guide plate 11, and the guide plate 11 is symmetrically arranged with several guide curved surfaces.

[0047] In the silver plating process on aluminum alloy surfaces, the uniformity, fluidity, and impurity control of the electroplating solution are core factors directly affecting the coating quality. Traditional electroplating equipment often faces technical bottlenecks such as insufficient fluidity of the electroplating solution, impurity accumulation affecting coating homogenization, and gas escape and oxidation problems. Although existing technologies have attempted to alleviate these problems by improving the stirring structure or adding filtration devices, defects such as separation of stirring and filtration, limited filtration accuracy, and insufficient gas agitation still exist.

[0048] This application incorporates a guide plate 11 within the electroplating tank 1, with several symmetrically arranged guiding curved surfaces on the guide plate 11, resulting in a more scientific and rational flow path for the electroplating solution within the tank 1. The guiding curved surfaces of the guide plate 11 guide the flow of the electroplating solution, thus avoiding the problem of a single flow direction in traditional stirring devices. Through this design, the electroplating solution can flow uniformly throughout the entire electroplating tank 1, avoiding significant differences in flow velocity in localized areas, ensuring a uniform distribution of silver ions in the electroplating solution, and preventing variations in coating thickness and "scorching" phenomena.

[0049] Specifically, the flow guide surface of the guide plate 11 can be designed with different curvatures and angles to adapt to the flow requirements of different electroplating solutions. The material of the guide plate 11 can be selected as corrosion-resistant and high-temperature resistant to ensure its long-term stability in the electroplating environment. The guide plate 11 can be installed in a fixed or detachable manner for easy maintenance and cleaning.

[0050] By setting a guide plate 11 inside the electroplating tank 1 and symmetrically arranging several guiding curved surfaces on the guide plate 11, this application effectively solves the problem of insufficient fluidity of the electroplating solution in traditional electroplating equipment, ensuring uniform flow of the electroplating solution and significantly improving the uniformity and density of the coating on the aluminum alloy surface. Compared with the prior art, the technical solution of this application has significant advantages in improving the flow efficiency of the electroplating solution and the coating quality.

[0051] As a preferred example of the air deflector 11, refer to Figures 1-3The guide plate 11 has several through holes 12 symmetrically opened, and each through hole 12 can be detachably connected to a filter element 13.

[0052] This application proposes an improved silver plating device for aluminum alloy parts. By setting several through holes 12 on the guide plate 11, and detachably connecting a filter element 13 to each through hole 12, more efficient flow and filtration of the electroplating solution within the electroplating tank 1 are achieved. Specifically, the through holes 12 on the guide plate 11 allow the electroplating solution to form a uniform flow path within the electroplating tank 1, avoiding the flow dead zones problem in traditional electroplating devices. Simultaneously, the detachable design of the filter element 13 allows users to replace the filter element 13 according to actual needs, ensuring optimal filtration performance.

[0053] Furthermore, various possible implementations of the filter element 13 include: the filter element 13 can employ filter materials with different pore sizes to adapt to the filtration requirements of different flow directions of the electroplating solution, such as top-down or bottom-up. For example, a filter element 13 with a larger pore size can be used for the through-hole 12 where the electroplating solution flows from top to bottom, while a filter element 13 with a smaller pore size can be used for the through-hole 12 where the electroplating solution flows from bottom to top. In addition, the filter element 13 can employ a multi-layer structure to improve filtration accuracy and efficiency. As a preferred embodiment, the filter element 13 can be fixed to the through-hole 12 by a snap-fit ​​or threaded connection for easy disassembly and replacement.

[0054] Through the above technical solution, this application solves the problems of insufficient fluidity of the electroplating solution and the accumulation of impurities affecting the homogenization of the plating layer in traditional electroplating equipment. Specifically, the design of the through holes 12 and filter element 13 on the guide plate 11 not only optimizes the flow path of the electroplating solution, ensuring uniform distribution of the plating solution within the electroplating tank 1, but also achieves dynamic filtration, promptly removing impurities from the electroplating solution and maintaining its cleanliness and stability. Therefore, the technical solution of this application significantly improves the quality of silver plating on the surface of aluminum alloy parts, ensuring a uniform and dense plating layer.

[0055] As a preferred embodiment of the above-described implementation method, refer to Figures 1-3 The stirring assembly rotates so that the electroplating solution passes through one side through hole 12 from top to bottom and then through the other side through hole 12 from bottom to top. The pore diameter of the filter element 13 on the through hole 12 through which the electroplating solution passes from top to bottom is larger than the pore diameter of the filter element 13 on the through hole 12 through which the electroplating solution passes from bottom to top.

[0056] As mentioned in the background section, in the silver plating process on aluminum alloy surfaces, the uniformity, fluidity, and impurity control of the electroplating solution are the core factors directly affecting the coating quality. The technical solution of this application aims to solve the problems of insufficient fluidity of the electroplating solution, impurity accumulation affecting coating homogenization, and gas escape and oxidation.

[0057] This application utilizes a stirring assembly to circulate the electroplating solution both from top to bottom and from bottom to top within the electroplating tank 1. Specifically, the electroplating solution first flows from top to bottom through a through-hole 12 on one side, and then from bottom to top through a through-hole 12 on the other side. The filter element 13 on the through-hole 12 through which the electroplating solution flows from top to bottom has a larger pore size to initially filter larger particles of impurities; while the filter element 13 on the through-hole 12 through which the solution flows from bottom to top has a smaller pore size to further filter finer impurities. This achieves dynamic circulation and purification of the electroplating solution, maintaining its cleanliness and improving the uniformity and density of the plating layer.

[0058] The core of this technical solution lies in the graded filtration achieved through filter elements 13 with different pore sizes, which effectively removes impurities of different sizes during the circulation of the electroplating solution. Furthermore, the flow path of the electroplating solution is optimized by rotating the stirring component, avoiding the generation of dead flow zones and ensuring the uniform distribution of the electroplating solution throughout the entire electroplating tank 1.

[0059] Specifically, the stirring assembly can be implemented in various ways. For example, multiple stirring blades 2 can be set on the stirring shaft, and the shape and arrangement of the blades can be adjusted according to actual needs to achieve the best stirring effect. The material and structure of the filter element 13 can also be selected according to filtration requirements. For example, a multi-layer filter element 13 structure can be used to improve filtration accuracy and efficiency.

[0060] Through the above technical solution, this application effectively solves the problems of insufficient fluidity of electroplating solutions, impurity accumulation, gas escape, and oxidation existing in the prior art, significantly improving the quality and efficiency of silver plating processes on aluminum alloy surfaces. Compared with the prior art, the technical solution of this application achieves synergistic optimization in stirring, filtration, and gas circulation, and has significant technical advantages.

[0061] Furthermore, this application also proposes that the filter element 13 on the through hole 12 through which the electroplating solution passes from top to bottom is installed below the guide plate 11, and the filter element 13 on the through hole 12 through which the electroplating solution passes from bottom to top is installed above the guide plate 11.

[0062] In the silver plating process of aluminum alloy surfaces, the uniformity, fluidity, and impurity control of the plating solution are core factors directly affecting the coating quality. Traditional electroplating equipment often faces problems such as insufficient fluidity of the plating solution, impurity accumulation affecting coating homogenization, and gas escape and oxidation. To address these issues, this application proposes an improved silver plating equipment for aluminum alloy parts.

[0063] The technical solution in this application achieves effective filtration of the electroplating solution when it flows in different directions by installing the filter element 13 on the through-hole 12 through which the electroplating solution flows from top to bottom below the guide plate 11, and installing the filter element 13 on the through-hole 12 through which the electroplating solution flows from bottom to top above the guide plate 11. Specifically, installing the filter element 13 on the through-hole 12 through which the electroplating solution flows from top to bottom below the guide plate 11 can effectively intercept larger impurity particles, while installing the filter element 13 on the through-hole 12 through which the electroplating solution flows from bottom to top above the guide plate 11 can further filter out smaller impurity particles. This design ensures that the electroplating solution is more thoroughly purified during the circulation process.

[0064] This design allows for effective filtration of the electroplating solution as it flows in different directions, preventing the accumulation of impurities and thus improving the uniformity and density of the coating. Furthermore, this design effectively avoids dead zones in the electroplating solution flow, ensuring its fluidity and uniformity throughout the entire electroplating tank 1.

[0065] Therefore, the technical solution of this application solves the problems of insufficient fluidity of electroplating solution, impurity accumulation, gas escape and oxidation in the prior art by improving the installation position of filter element 13, thereby improving the uniformity, flow efficiency and cleanliness of electroplating solution, and thus ensuring the uniformity and density of the coating on the aluminum alloy surface.

[0066] As a preferred embodiment of the stirring assembly, refer to Figures 1-3 The stirring assembly includes a stirring shaft located in the middle and above the guide plate 11, and a number of stirring blades 2 are arranged circumferentially on the stirring shaft.

[0067] The stirring assembly uses a stirring shaft positioned in the middle and above the guide plate 11 to agitate the electroplating solution. Several stirring blades 2 are mounted on the stirring shaft, arranged at intervals to effectively stir the solution. This method ensures a uniform flow of the electroplating solution within the electroplating tank 1, avoiding the problems of unidirectional flow and significant localized velocity differences. Particularly effective on complex workpiece surfaces, this method promotes a more uniform distribution of silver ions in the electroplating solution, reduces concentration gradients, ensures consistent coating thickness, and prevents "scorching."

[0068] The arrangement of the stirring shaft and stirring blades 2 can be implemented in various ways. For example, the stirring shaft can be made of stainless steel, which has good corrosion resistance and ensures long-term use in the electroplating solution without damage. The stirring blades 2 can be designed in various shapes, such as flat, spiral, or curved, to adapt to the flow requirements of different electroplating solutions. The number and spacing of the stirring blades 2 can be adjusted according to the size of the electroplating tank 1 and the characteristics of the electroplating solution to achieve the best stirring effect. As a preferred embodiment, the stirring shaft and stirring blades 2 can be connected by bolts for easy disassembly and maintenance.

[0069] Through the design of the above-described stirring assembly, this application effectively solves the problem of insufficient fluidity of electroplating solutions in the prior art. The arrangement of the stirring shaft and stirring blades 2 ensures uniform flow of the electroplating solution within the electroplating tank 1, avoiding the phenomena of unidirectional flow and significant differences in flow velocity in local areas, thereby ensuring consistent coating thickness. Compared with traditional electroplating equipment, the stirring assembly of this application has higher stirring efficiency and more uniform flow effect, significantly improving the quality of silver plating on aluminum alloy surfaces.

[0070] As a specific implementation of the air extraction mechanism, refer to Figure 1 , Figure 2 as well as Figure 4 The exhaust mechanism includes an air cylinder 4, a piston 41 is slidably connected inside the air cylinder 4, a push rod 42 is fixedly connected to the bottom of the piston 41, a cam 32 is coaxially arranged on the rotating shaft 31, the bottom of the push rod 42 abuts against the side wall of the cam 32, a spring 43 is fixedly connected between the piston 41 and the inner wall of the air cylinder 4, an air inlet pipe 44 and an exhaust pipe 45 are provided at the upper end of the air cylinder 4, a one-way valve is provided on both the air inlet pipe 44 and the exhaust pipe 45, and the end of the exhaust pipe 45 is connected to a gas nozzle 46.

[0071] The exhaust mechanism proposed in this application achieves effective gas extraction through the cooperation of an air cylinder 4, a piston 41, a push rod 42, and a cam 32. Specifically, the rotation of the cam 32 drives the push rod 42 to move up and down, thereby pushing the piston 41 to slide inside the air cylinder 4. The movement of the piston 41 causes the air inside the air cylinder 4 to circulate through the one-way valves of the inlet pipe 44 and the exhaust pipe 45, and finally be delivered to the gas nozzle 46 through the exhaust pipe 45. Thus, the gas nozzle 46 can uniformly spray gas, assisting in the stirring and flow of the electroplating solution.

[0072] The design of the air cylinder 4, piston 41, and push rod 42 ensures effective gas extraction and delivery. The cooperation between the cam 32 and the push rod 42 makes the extraction and exhaust process more stable and efficient. Furthermore, an air filter can be installed inside the air inlet pipe 44 to ensure the cleanliness of the air entering the air cylinder 4 and prevent impurities from entering the electroplating solution. The lower end of the push rod 42 can also be rotatably connected to the pulley 421 to reduce friction and improve the smoothness of the push rod 42's movement.

[0073] This application solves the problem of insufficient gas agitation in existing technologies by integrating a gas extraction and exhaust mechanism with a stirring component. Compared with the traditional method of relying on an external air pump for gas supply, this design can better achieve a synergistic effect with mechanical stirring, improving the fluidity and uniformity of the electroplating solution. In addition, the integrated design also reduces energy consumption and improves overall efficiency.

[0074] The air filter effectively filters impurities from the air entering the air cylinder 4, preventing them from affecting the normal operation of the exhaust mechanism. The air filter can be made of common materials such as filter screens or filter cotton, allowing for easy disassembly and replacement to ensure consistent filtration. The air filter can be installed at the inlet of the air intake pipe 44 for easy maintenance and replacement.

[0075] The use of air filters can significantly improve the working efficiency of electroplating equipment and the quality of the plating layer. By filtering impurities in the air, wear and blockage of the air cylinder 4 are prevented, thus ensuring the purity of the gas. As a result, the gas ejected from the gas nozzle 46 is purer, which helps to improve the uniformity and fluidity of the plating solution, thereby improving the density and uniformity of the plating layer.

[0076] Compared with existing technologies, this application effectively solves the problem of equipment malfunction caused by impurities in the air entering the air cylinder 4 by installing a removable air filter in the air inlet pipe 44, thereby improving the reliability and service life of the electroplating device. At the same time, the removable design of the air filter facilitates daily maintenance and replacement by users, ensuring the long-term stable operation of the equipment.

[0077] Furthermore, the lower end of the push rod 42 is rotatably connected to the auxiliary pulley 421.

[0078] The technical solution of rotatably connecting the lower end of the push rod 42 to the pulley 421 aims to solve the problem of frictional resistance that may occur during the movement of the push rod 42. By setting the pulley 421 at the lower end of the push rod 42, the friction between the push rod 42 and other components can be effectively reduced, thereby ensuring the smoothness and stability of the push rod 42's movement and helping to improve the working efficiency and reliability of the entire device.

[0079] The pulley 421 can be installed in several ways. For example, the pulley 421 can be connected to the lower end of the push rod 42 via a bearing to achieve smooth rotation. The material of the pulley 421 can also be selected according to actual needs. Common materials include wear-resistant plastics or metals, and the specific choice can be adjusted according to the working environment and usage requirements. In addition, the size and shape of the pulley 421 can also be designed according to actual conditions to ensure that it can achieve the best sliding effect in a limited space.

[0080] By installing a pulley 421 at the lower end of the push rod 42, the silver plating device of this application can operate more smoothly and efficiently in actual use, reducing the increase in energy consumption and component wear caused by frictional resistance, and further improving the working performance and service life of the device. Compared with the prior art, this technical solution has significant advantages in reducing frictional resistance and improving motion smoothness.

[0081] As a specific example of a drive mechanism, the drive mechanism includes a motor 3, the output end of which is fixedly connected to a rotating shaft 31.

[0082] The drive mechanism is fixedly connected to the rotating shaft 31 via the motor 3, enabling the stirring assembly to rotate efficiently and stably, thereby improving the uniformity and fluidity of the electroplating solution. As the core component of the drive mechanism, the motor 3, through its output end fixedly connected to the rotating shaft 31, achieves stable and efficient rotation of the stirring blades 2, ensuring uniform distribution and thorough mixing of the electroplating solution within the electroplating tank 1. Consequently, silver ions in the electroplating solution can uniformly cover the aluminum alloy surface, avoiding the coating thickness differences caused by uneven stirring in traditional devices.

[0083] Specifically, the selection of motor 3 can be adjusted according to the capacity of electroplating tank 1 and the stirring requirements. For example, for a larger capacity electroplating tank 1, a higher power motor 3 can be selected to ensure the stirring effect. At the same time, the speed of motor 3 can also be adjusted according to actual needs to adapt to different electroplating process requirements. As a preferred implementation, motor 3 can be controlled by a frequency converter to achieve flexible speed adjustment, thereby further optimizing the stirring effect.

[0084] This application solves the problem of uneven stirring in traditional electroplating equipment by adopting a design that drives the rotating shaft 31 with a motor 3, significantly improving the uniformity and fluidity of the electroplating solution. At the same time, the motor 3-drive method simplifies the structure of the device, reduces maintenance difficulty and energy consumption, and improves overall work efficiency. Compared with existing technologies, the solution of this application ensures the uniformity and density of the plating layer while possessing higher operational stability and adaptability.

[0085] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0086] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0087] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. An apparatus for silver plating the surface of an aluminum alloy piece, comprising an electroplating bath (1), characterized in that, The agitating assembly is rotatably connected in the electroplating tank (1), the sidewall of the electroplating tank (1) is provided with a driving mechanism for driving the agitating assembly to rotate, the driving mechanism has a rotating shaft (31) coaxially and fixedly connected with the agitating assembly, the sidewall of the electroplating tank (1) is provided with an air exhaust mechanism, the rotating shaft (31) is provided with a driving part for driving the air exhaust mechanism, the electroplating tank (1) is provided with a gas nozzle (46), and the output end of the air exhaust mechanism is connected with the gas nozzle (46).

2. The apparatus according to claim 1, wherein The electroplating tank (1) is provided with a flow guide plate (11), and the flow guide plate (11) is symmetrically provided with a plurality of flow guide curved surfaces.

3. The apparatus according to claim 2, wherein A plurality of through holes (12) are symmetrically formed in the flow guide plate (11), and a filter element (13) is detachably connected to each through hole (12).

4. The apparatus according to claim 3, wherein The agitating assembly rotates so that the electroplating solution passes through one side of the through hole (12) from top to bottom and then passes through the other side of the through hole (12) from bottom to top, the pore diameter of the filter element (13) on the through hole (12) through which the electroplating solution passes from top to bottom is larger than the pore diameter of the filter element (13) on the through hole (12) through which the electroplating solution passes from bottom to top.

5. The apparatus according to claim 3, wherein The filter element (13) on the through hole (12) through which the electroplating solution passes from top to bottom is installed below the flow guide plate (11), and the filter element (13) on the through hole (12) through which the electroplating solution passes from bottom to top is installed above the flow guide plate (11).

6. The apparatus according to claim 2, wherein The agitating assembly comprises an agitating shaft above the middle part of the flow guide plate (11), and a plurality of agitating blades (2) are circumferentially and spacedly arranged on the agitating shaft.

7. The apparatus of any of claims 1-6, wherein the apparatus further comprises a silvering station configured to apply a silver layer to the surface of the aluminum alloy piece. The air exhaust mechanism comprises an air cylinder (4), a piston (41) is slidably connected in the air cylinder (4), a push rod (42) is fixedly connected to the bottom of the piston (41), a cam (32) is coaxially arranged on the rotating shaft (31), the bottom of the push rod (42) abuts against the sidewall of the cam (32), a spring (43) is fixedly connected between the piston (41) and the inner wall of the air cylinder (4), an air inlet pipe (44) and an air outlet pipe (45) are arranged on the upper end of the air cylinder (4), one-way valves are arranged on the air inlet pipe (44) and the air outlet pipe (45), and the tail end of the air outlet pipe (45) is connected with the gas nozzle (46).

8. The apparatus according to claim 7, wherein An air filter is detachably connected in the air inlet pipe (44).

9. The apparatus according to claim 7, wherein A sliding pulley (421) is rotatably connected to the lower end of the push rod (42).

10. The apparatus of claim 1, wherein, The driving mechanism comprises a motor (3), and the output end of the motor (3) is fixedly connected with the rotating shaft (31).

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