Anode box and electroplating device

Abstract

The utility model discloses an anode box and an electroplating device, which comprise a box body, at least two groups of anode titanium meshes which are not connected are arranged in the box body, so that adjacent electroplating areas are formed at the bottom of the box body corresponding to each group of anode titanium meshes; the top of each anode titanium mesh is provided with a group of wiring blocks, and the wiring blocks are used for supplying power to the anode titanium meshes; the spray head assembly is arranged right above the anode titanium mesh of the box body, and the spray head assembly at least comprises a water inlet pipe and a spray head arranged at the bottom of the water inlet pipe; the utility model can solve the problems that the anode titanium mesh of the traditional anode box is an integral body, so that the current is not uniformly distributed on the surface of the anode, the deposition uniformity of copper ions on the surface of a PCB (Printed Circuit Board) is influenced, and the product quality and performance are influenced.

Description

Technical Field

[0001] This utility model relates to the field of electroplating equipment, specifically to an anode box and an electroplating device. Background Technology

[0002] Electroplating is the process of depositing a thin layer of other metals or alloys onto the surface of certain metals using the principle of electrolysis. It utilizes electrolysis to attach a metal film to the surface of metal or other material parts, serving to prevent metal oxidation and improve wear resistance, conductivity, reflectivity, and corrosion resistance. Traditional PCB electroplating anode boxes use a single, large piece of titanium mesh, which can lead to uneven current distribution on the anode surface. This affects the uniformity of copper ion deposition on the PCB surface, impacting product quality and performance. Utility Model Content

[0003] The present invention aims to solve the above-mentioned technical problem, namely that the anode titanium mesh of the traditional anode box is a whole, which will cause uneven distribution of current on the anode surface, affect the uniformity of copper ion deposition on the PCB surface, and affect product quality and performance.

[0004] In a first aspect, the present invention provides an anode box, comprising: a box body, wherein at least two sets of non-connected anode titanium meshes are disposed within the box body, such that an adjacent electroplating area is formed at the bottom of the box body corresponding to each set of anode titanium meshes; a wiring block, wherein a set of the wiring block is disposed on the top of each anode titanium mesh for supplying power to the anode titanium mesh; and a nozzle assembly, wherein the nozzle assembly is disposed on the box body directly above the anode titanium meshes, and the nozzle assembly includes at least a water inlet pipe and a nozzle disposed at the bottom of the water inlet pipe.

[0005] In the preferred embodiment of the anode box described above, the nozzle assembly further includes a manifold, and all of the water inlet pipes are connected to the manifold.

[0006] In the preferred embodiment of the anode box described above, each set of anode titanium mesh has a through-flow port, and the nozzle passes through the through-flow port.

[0007] In the preferred embodiment of the anode box described above, the box body is provided with a perforated cover plate at the lower part of the anode titanium mesh.

[0008] In the preferred embodiment of the anode box described above, the hole at the flow outlet opposite the baffle is one of the following: waist-shaped, circular, or polygonal.

[0009] In the preferred embodiment of the anode box described above, each of the electroplating areas has two anode titanium meshes with staggered hole configurations.

[0010] In the preferred embodiment of the anode box described above, the terminal block is made of titanium.

[0011] In the preferred embodiment of the anode box described above, the baffle is made of PP or PVC material.

[0012] In a second aspect, the present invention also provides an electroplating apparatus, which includes the aforementioned anode box.

[0013] The beneficial effects of this invention are as follows: by combining several groups of anode titanium meshes to form a complete positive electrode titanium mesh, the current distribution on the anode is made more uniform, avoiding overheating or burning caused by excessive local current in the anode titanium mesh, thus improving the uniformity and quality of the PCB board metal plating. At the same time, this setting allows for precise control of the current input of each group of anode titanium meshes, ensuring that the anode area is increased in electroplating areas requiring high current density and reduced in electroplating areas requiring low current density, thereby achieving precise control of the PCB board metal plating and optimizing the electroplating efficiency of the PCB board, making it practical. Attached Figure Description

[0014] Figure 1 This is the main view of the present utility model. Figure 1 ;

[0015] Figure 2 This is the main view of the present utility model. Figure 2 ;

[0016] Figure 3 This is a top view of the present invention;

[0017] Figure 4 This is a schematic diagram of the structure of an anode titanium mesh;

[0018] Figure 5 This is a schematic diagram of the shield structure;

[0019] In the diagram: 1. Box body; 2. Anode titanium mesh; 21. Flow port; 3. Wiring block; 41. Water inlet pipe; 42. Sprayer head; 43. Manifold; 5. Baffle plate. Detailed Implementation

[0020] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0021] It should be noted that in the description of this utility model, terms such as "upper," "lower," "left," "right," "front," and "rear," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] See Figures 1 to 4 The anode box of this utility model includes: a box body 1, in which at least two sets of non-connected anode titanium meshes 2 are arranged, such that the bottom of the box body 1 forms an adjacent electroplating area corresponding to each set of anode titanium meshes 2; a wiring block 3, on the top of each anode titanium mesh 2, for supplying power to the anode titanium mesh 2; and a nozzle assembly, which is arranged on the box body 1 directly above the anode titanium meshes 2, and the nozzle assembly includes at least a water inlet pipe 41 and a nozzle 42 arranged at the bottom of the water inlet pipe 41.

[0024] See Figure 2 The box body 1 has a frame-shaped structure. At least two sets of anode titanium mesh 2 are arranged in the middle area of ​​the box body 1. An electroplating area is formed below each set of anode titanium mesh 2. The shape of the two sets of anode titanium mesh 2 can be one of rectangle, trapezoid, or parallelogram. After the two sets of anode titanium mesh 2 are installed in the box body 1, there is only a small gap between the two sets of anode titanium mesh 2. Each set of anode titanium mesh 2 has several holes. A wiring block 3 is installed on the upper part of each set of anode titanium mesh 2. A U-shaped wiring head is formed on the top of the wiring block 3 to facilitate the installation of the circuit.

[0025] See Figure 2 Inside the frame structure of the box body 1, above the anode titanium mesh 2, there are several water inlet pipes 41. Each water inlet pipe 41 is equipped with multiple nozzles 42 at its bottom. The multiple nozzles 42 are evenly distributed on the upper part of the two sets of anode titanium mesh 2 so that the electrolyte sprayed by the nozzles 42 can pass through the anode titanium mesh 2 evenly, ensuring that metal ions can be evenly deposited on the PCB board to form a metal plating layer.

[0026] Specifically, during PCB electroplating, the PCB is first placed in the electroplating bath below the anode box. Then, the anode titanium mesh 2 is energized using the connector 3, creating an electric field between the PCB (negative electrode) and the anode titanium mesh 2 (positive electrode). The electrolyte is then sprayed out through the inlet pipe 41 and nozzle 42, causing metal ions in the electrolyte to move to the workpiece surface and deposit under the influence of the electric field, thus forming a metal coating. This application combines several sets of anode titanium mesh 2 to form a complete rectangular positive electrode titanium mesh, which allows for a more uniform current distribution on the anode, preventing overheating or burning caused by excessive local current in larger anode titanium mesh 2. This improves the uniformity and quality of the PCB metal coating. Furthermore, this setup allows for precise control of the current input to each set of anode titanium mesh 2, ensuring increased anode area in areas requiring high current density and reduced anode area in areas requiring lower current density. This achieves precise control of the PCB metal coating, optimizes the PCB electroplating efficiency, and is practical.

[0027] In one or more embodiments, the nozzle assembly further includes a manifold 43, to which a plurality of water inlet pipes 41 are connected. See also Figure 2 The external electrolyte is distributed to each water inlet pipe 41 through the manifold 43 to reduce the use of external pipelines.

[0028] In one or more embodiments, each set of anode titanium mesh 2 has a through-hole 21, through which the nozzle 42 passes.

[0029] See Figure 2 The outlet 21 is used for the nozzle 42 to pass through. This arrangement allows the electrolyte sprayed by the nozzle 42 to pass through the anode titanium mesh 2 and spray the electrolyte onto the PCB board, reducing the resistance of the electrolyte and allowing the electrolyte to flow more smoothly between the anode titanium mesh 2 and the PCB board, thereby improving the electroplating efficiency of the PCB board.

[0030] In one or more embodiments, the housing 1 is provided with a perforated cover plate 5 at the lower part of the anode titanium mesh 2.

[0031] See Figure 2 The perforated shield 5 is positioned at the bottom of the housing 1 directly below the anode titanium mesh 2. The perforated shield 5 changes the electric field and current distribution between the anode titanium mesh 2 and the PCB board through the shielding effect, making the current more evenly distributed on the cathode surface and improving the uniformity of the electroplating layer. In addition, the shield 5 improves the uniformity of the metal plating layer deposited on the PCB board surface by shielding the uneven electric field lines, thereby improving the electroplating quality and performance of the PCB board.

[0032] In one or more embodiments, the hole at the outlet 21 opposite to the baffle 5 is one of the following: waist-shaped, circular, or polygonal.

[0033] See Figure 2 The hole of the shield 5 facing the flow port 21 is oblong, circular or polygonal. The shape of the hole is not specifically limited and can be selected according to actual production needs. The size of the hole of the shield 5 facing the flow port 21 is larger than the size of the surrounding holes. This setting can reduce the resistance of the electrolyte sprayed by the nozzle 42, so that the electrolyte can be evenly covered on the PCB board and improve the electroplating effect of the PCB board of this application.

[0034] In one or more embodiments, each electroplating area has two anode titanium meshes 2 with staggered hole configurations. This arrangement allows for a more complex current field to be formed in each electroplating area, ensuring that copper ions in the electrolyte are more evenly deposited on the PCB board surface. Furthermore, this arrangement reduces the impact on the anode box's lifespan caused by corrosion of a single anode titanium mesh 2.

[0035] In one or more embodiments, the terminal block 3 is made of titanium. The terminal block 3 made of titanium has good corrosion resistance, which can extend its service life and ensure the stability of the anode box. In addition, the terminal block 3 made of titanium has good conductivity, which can ensure the stability of current transmission to the anode titanium mesh 2 through the terminal block 3 and ensure the uniform distribution of current in the electrolyte.

[0036] In one or more embodiments, the mask 5 is made of PP or PVC material. The mask 5 made of PP material has good high temperature resistance and acid and alkali resistance, meeting the requirements of high temperature, acid and alkali environment of PCB board in electroplating process, avoiding deformation of mask 5 and extending the service life of mask 5.

[0037] In addition, the present invention also provides an electroplating apparatus having the anode box in any of the above embodiments.

[0038] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. An anode box, characterized in that, include: The box body contains at least two sets of non-connected anode titanium meshes, such that the bottom of the box body forms adjacent electroplating areas corresponding to each set of anode titanium meshes. A set of wiring blocks is provided on the top of each of the anode titanium meshes for supplying power to the anode titanium meshes; A nozzle assembly is disposed on the housing directly above the anode titanium mesh, and the nozzle assembly includes at least a water inlet pipe and a nozzle disposed at the bottom of the water inlet pipe.

2. The anode box according to claim 1, characterized in that: The nozzle assembly also includes a manifold, and several of the water inlet pipes are connected to the manifold.

3. The anode box according to claim 1, characterized in that: Each set of anode titanium mesh has a through-flow port, through which the nozzle passes.

4. The anode box according to claim 3, characterized in that: The box body has a perforated cover plate at the lower part of the anode titanium mesh.

5. The anode box according to claim 4, characterized in that: The hole at the outlet of the baffle is one of the following shapes: oblong, circular, or polygonal.

6. The anode box according to claim 1, characterized in that: Each of the electroplating areas has two anode titanium meshes with misaligned holes.

7. The anode box according to claim 1, characterized in that: The terminal block is made of titanium.

8. The anode box according to claim 4, characterized in that: The baffle is made of PP or PVC material.

9. An electroplating apparatus, characterized in that: The anode box includes any one of claims 1 to 8.

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