Electroplating cell with improved plating efficiency

Abstract

The embodiment of the application provides an electroplating tank with improved electroplating efficiency, relates to the technical field of electrolysis, and comprises a tank body, a cathode plate and an anode plate are arranged on the tank body, mounting frames are fixed on the two sides of the length direction of the tank body, sliding blocks corresponding to the cathode plate are slidably arranged in the mounting frames, the two ends of the cathode plate are connected to the corresponding sliding blocks, the sliding blocks abut at the head and the tail, and horizontal reciprocating mechanisms for driving the horizontal movement of the sliding blocks and lifting reciprocating mechanisms for driving the up-down movement of the sliding blocks are arranged on the mounting frames. The application has the effect of improving electroplating uniformity.

Description

Technical Field

[0001] This utility model relates to the field of electroplating technology, and in particular to an electroplating tank that improves electroplating efficiency. Background Technology

[0002] Electroplating has many applications, mainly including corrosion prevention, protective decoration, wear resistance, and electrical properties. Currently, electroplating is mainly carried out in an electroplating bath, with the object to be plated serving as the cathode, and then direct current is applied for electroplating.

[0003] For electroplating to achieve the desired effect, certain conditions need to be maintained, including current density, electroplating location, stirring conditions, current waveform, plating solution temperature, plating solution pH value, and plating solution specific gravity. Generally, the better the stirring effect, the higher the electroplating efficiency.

[0004] Traditional stirring methods involve introducing air into the electroplating bath, using a stirring device to stir the electroplating solution, or moving the cathode plate back and forth in the horizontal direction to stir the electroplating solution.

[0005] The above method of stirring has the following problems:

[0006] Air agitation: Compressed air is introduced into the plating solution, and the rising air bubbles drive the liquid flow. However, the distribution of air bubbles is greatly affected by the location of the air inlet and the air pressure. In areas with complex cathode shapes (such as deep holes and grooves), air bubbles have difficulty entering, which can easily form agitation "dead zones". This leads to insufficient ion supply in these areas, resulting in problems such as uneven coating thickness and scorching (roughness / blackening in high current density areas due to ion deficiency).

[0007] Mechanical stirring (such as a stirring paddle): It relies on the rotation of the stirring paddle to drive the liquid flow, but its flow rate is "gradient distribution" in the plating tank - the flow rate is fast near the paddle blades and the flow rate drops sharply in the area far from the paddle blades or the back of the cathode, which also has the problem of uneven stirring.

[0008] The reciprocating motion of the cathode plate: the single motion mode can also lead to uneven mixing. Utility Model Content

[0009] To address the aforementioned technical problems, this application provides an electroplating bath that improves electroplating efficiency.

[0010] The electroplating tank with improved electroplating efficiency provided in this application adopts the following technical solution: An electroplating tank with improved electroplating efficiency includes a tank body, on which a cathode plate and an anode plate are disposed. Mounting frames are fixed on both sides of the tank body along its length. Sliding blocks corresponding to the cathode plates are slidably disposed in the mounting frames. The two ends of the cathode plates are connected to the corresponding sliding blocks, and the sliding blocks abut against each other. The mounting frames are provided with a horizontal reciprocating mechanism that drives several sliding blocks to move horizontally and a lifting reciprocating mechanism that drives the sliding blocks to move up and down.

[0011] Furthermore, the sliding block is fixed with a limiting rod on its side wall to prevent it from falling to the bottom of the mounting frame. The lifting and reciprocating mechanism includes a drive block slidably disposed at the bottom of the mounting frame. A drive screw is rotatably connected inside the mounting frame, passing through the drive block and threadedly connected to it. A drive motor that drives the drive screw to rotate is also disposed inside the mounting frame. Inclined guide surfaces are provided on both sides of the drive block along the direction of movement. When the drive block moves, it pushes the corresponding sliding block to move upward.

[0012] Furthermore, the horizontal reciprocating mechanism includes a baffle slidably disposed within the mounting frame, the baffle abutting against the side wall of a sliding block located at the end. A positioning plate is fixed to the pool body, and a horizontally disposed telescopic spring is fixed to the positioning plate. The other end of the telescopic spring is fixed to the baffle and pushes the baffle to move in the direction of squeezing the sliding block. The horizontal reciprocating mechanism also includes a horizontal reciprocating assembly that drives several sliding blocks to move in the direction of squeezing the telescopic spring. Furthermore, the horizontal reciprocating assembly includes a horizontal reciprocating motor fixed to the pool body, and a cam with its side wall abutting against the side wall of the end sliding block is fixed to the output shaft of the horizontal reciprocating motor.

[0013] Furthermore, the horizontal reciprocating assembly includes a drive cylinder fixed to the pool body, and the output shaft of the drive cylinder is fixed to a sliding block at its end.

[0014] Furthermore, the sliding block is provided with an arc-shaped rotating groove, and a rotating block is rotatably disposed in the rotating groove. The cathode plate is connected to the corresponding rotating block, and a rotating component is provided on the sliding block to drive the rotating block to rotate in the rotating groove.

[0015] Furthermore, the bottom wall of the rotating groove is provided with an extension groove that vertically penetrates the sliding block. The rotating assembly includes a rotating rod fixed to the bottom of the rotating block and passing through the extension groove. The lower end of the rotating rod has a smooth arc-shaped structure and protrudes from the lower end face of the sliding block. A return spring is provided in the extension groove and sleeved on the rotating rod. The two ends of the return spring are respectively fixed to the inner wall of the extension groove and the rotating rod, and the rotating rod is set vertically. During the movement of the driving block, the rotating rod is pushed to rotate.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. Multidimensional motion enhances ion exchange

[0018] The device achieves combined motion of the cathode plate through the coordinated action of a horizontal reciprocating mechanism and a lifting reciprocating mechanism. In the lifting reciprocating mechanism, the drive motor drives the drive screw to rotate, causing the drive block to move along the length of the tank. Its inclined guide surface pushes the sliding block and the cathode plate to complete the up-and-down reciprocating motion. In the horizontal reciprocating mechanism, the drive cylinder (or the horizontal reciprocating motor driving the cam) cooperates with the telescopic spring to drive the sliding block and the cathode plate to achieve horizontal reciprocating motion. This multi-dimensional motion mode of up-and-down + horizontal can break the concentration boundary layer near the electrode during the electroplating process, accelerate the diffusion and migration of ions in the electrolyte, avoid the problem of uneven coating caused by excessively low local ion concentration, and significantly improve electroplating efficiency and coating uniformity.

[0019] 2. Dynamic stirring optimizes the solution environment.

[0020] The design of the rotating assembly further enhances the dynamic characteristics of the solution. When the drive block moves, it pushes the rotating rod to swing, causing the rotating block and cathode plate to rotate, creating a stirring effect on the surrounding electrolyte and making the solution composition more uniform. As the drive block continues to move, the arc-shaped structure at the bottom of the rotating rod, in conjunction with a return spring, achieves a smooth transition between rotation and lifting movements, ensuring both effective stirring and avoiding motion interference. This dynamic stirring function reduces concentration polarization, improves ion utilization, and shortens the electroplating cycle, making it particularly suitable for production scenarios requiring high-precision coatings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0022] Figure 2 This is a schematic diagram of the horizontal reciprocating motion mechanism in Embodiment 1 of this application.

[0023] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this application.

[0024] Figure 4 This is a cross-sectional view used to illustrate the sliding block in Embodiment 3 of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Pool body; 2. Mounting frame; 3. Sliding block; 4. Limiting rod; 5. Driving block; 6. Driving screw; 7. Driving motor; 8. Guide surface; 9. Baffle; 10. Positioning plate; 11. Telescopic spring; 12. Driving cylinder; 13. Reciprocating motor; 14. Rotating groove; 15. Rotating block; 16. Rotating rod; 17. Return spring. Detailed Implementation

[0026] The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to also include expressions such as “one or more,” unless the context clearly indicates otherwise. It should also be understood that in the following embodiments of this application, “at least one” and “one or more” refer to one, two, or more than two. The term “and / or” is used to describe the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can indicate: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character “ / ” generally indicates that the preceding and following related objects are in an “or” relationship.

[0027] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0029] Example 1:

[0030] This application discloses an electroplating bath that improves electroplating efficiency, referring to... Figure 1 The system includes a pool body 1, on which a cathode plate and an anode plate are mounted. Mounting frames 2 are fixed on both sides of the pool body 1 along its length. The upper end of the mounting frames 2 is open. Sliding blocks 3 corresponding to the cathode plates are slidably mounted inside the mounting frames 2. Limiting rods 4 are fixed on the side walls of the sliding blocks 3 to prevent them from falling to the bottom of the mounting frames 2. The lower end of the limiting rods 4 abuts against the upper end of the mounting frames 2. The sliding blocks 3 can slide in both vertical and horizontal directions. Several sliding blocks 3 abut against each other end to end along the length of the pool body 1. The two ends of the cathode plates are connected to the corresponding sliding blocks 3.

[0031] Reference Figure 1 and Figure 2The mounting frame 2 is equipped with a horizontal reciprocating mechanism that drives several sliding blocks 3 to move horizontally and a lifting reciprocating mechanism that drives the sliding blocks 3 to move up and down. The lifting reciprocating mechanism includes a drive block 5 slidably set at the bottom of the mounting frame 2. A drive screw 6 is rotatably connected inside the mounting frame 2. The drive screw 6 is set along the length direction of the pool body 1. The drive screw 6 passes horizontally through the drive block 5 and is threadedly connected to the drive block 5. A drive motor 7 that drives the drive screw 6 to rotate is fixed inside the mounting frame 2. Inclined guide surfaces 8 are opened on both sides of the drive block 5 along the direction of movement. When the drive block 5 moves along the length direction of the pool body 1, it pushes the corresponding sliding block 3 to move upward under the action of the guide surface 8, and moves downward under the action of gravity along the other guide surface 8.

[0032] Reference Figure 1 and Figure 2 The horizontal reciprocating mechanism includes a baffle 9 slidably disposed within the mounting frame 2. The baffle 9 abuts against the side wall of a sliding block 3 located at one end. A positioning plate 10 is fixed on the pool body 1. A horizontally disposed telescopic spring 11 is fixed on the positioning plate 10. One end of the telescopic spring 11 is fixed on the positioning plate 10, and the other end of the telescopic spring 11 is fixed on the baffle 9 and pushes the baffle 9 to move in the direction of squeezing the sliding block 3. The horizontal reciprocating mechanism also includes a horizontal reciprocating assembly that drives several sliding blocks 3 to move in the direction of squeezing the telescopic spring 11.

[0033] Reference Figure 1 and Figure 2 The horizontal reciprocating assembly includes a drive cylinder 12 fixed on the pool body 1. The output shaft of the drive cylinder 12 is fixed on the sliding block 3 at the end. The drive cylinder 12 and the compression spring are located on both sides of several sliding blocks 3 respectively.

[0034] Example 2:

[0035] The difference from Embodiment 1 is that the horizontal reciprocating assembly includes a horizontal reciprocating motor 13 fixed on the pool body 1, a cam fixed on the output shaft of the horizontal reciprocating motor 13, the sidewall of the cam abutting against the side of the end sliding block 3, and the reciprocating motor 13 and the compression spring are respectively located on both sides of a plurality of sliding blocks 3.

[0036] Example 3:

[0037] The difference from Embodiment 1 and Embodiment 2 is that the sliding block 3 has an arc-shaped rotating groove 14, and a rotating block 15 is rotatably arranged in the rotating groove 14. The cathode plate is connected to the corresponding rotating block 15. The bottom wall of the rotating groove 14 has an extension groove that extends vertically through the sliding block 3. The sliding block 3 is provided with a rotating assembly that drives the rotating block 15 to rotate in the rotating groove 14. The rotating assembly includes a rotating rod 16 fixed to the bottom of the rotating block 15. The rotating rod 16 passes through an extension groove, the diameter of which is larger than the diameter of the rotating rod 16, allowing the rotating rod 16 to swing within the extension groove. The lower end of the rotating rod 16 has a smooth arc-shaped structure and protrudes beyond the lower end face of the sliding block 3. A return spring 17 is sleeved on the rotating rod 16 within the extension groove. One end of the return spring 17 is fixed to the inner wall of the extension groove, and the other end is fixed to the rotating rod 16. When the return spring 17 is in its natural state, the rotating rod 16 is vertically positioned. During the movement of the driving block 5, the rotating rod 16 is first pushed to rotate, causing the rotating block 15 and the cathode plate to rotate and stir the solution. As the driving block 5 continues to move, the arc-shaped structure at the bottom of the rotating rod 16 pushes the rotating rod 16 upward, preventing interference with the movement of the driving block 5.

[0038] The above are merely preferred embodiments of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present utility model should be included within the protection scope recorded in the claims.

Claims

1. An electroplating tank for improving electroplating efficiency, comprising a tank body (1), wherein a cathode plate and an anode plate are disposed on the tank body (1), characterized in that: The pool body (1) has mounting frames (2) fixed on both sides along its length. Sliding blocks (3) corresponding to the cathode plates are slidably arranged inside the mounting frames (2). The two ends of the cathode plates are connected to the corresponding sliding blocks (3). The sliding blocks (3) are joined end to end. The mounting frames (2) are provided with a horizontal reciprocating mechanism that drives several sliding blocks (3) to move horizontally and a lifting reciprocating mechanism that drives the sliding blocks (3) to move up and down.

2. The electroplating bath with improved electroplating efficiency according to claim 1, characterized in that: The sliding block (3) is fixed with a limiting rod (4) to prevent the sliding block (3) from falling to the bottom of the mounting frame (2). The lifting and reciprocating mechanism includes a driving block (5) slidably disposed at the bottom of the mounting frame (2). A driving screw (6) is rotatably connected inside the mounting frame (2) and threadedly connected to the driving block (5). A driving motor (7) is also provided inside the mounting frame (2) to drive the driving screw (6) to rotate. The driving block (5) has inclined guide surfaces (8) on both sides along the direction of movement. When the driving block (5) moves, it pushes the corresponding sliding block (3) to move upward.

3. An electroplating bath with improved electroplating efficiency according to claim 2, characterized in that: The horizontal reciprocating mechanism includes a baffle (9) slidably disposed within the mounting frame (2), the baffle (9) abutting against the side wall of the sliding block (3) located at the end, a positioning plate (10) fixed on the pool body (1), a horizontally disposed telescopic spring (11) fixed on the positioning plate (10), the other end of the telescopic spring (11) fixed on the baffle (9) and pushing the baffle (9) to move in the direction of squeezing the sliding block (3), the horizontal reciprocating mechanism also includes a horizontal reciprocating assembly that drives several sliding blocks (3) to move in the direction of squeezing the telescopic spring (11).

4. An electroplating bath with improved electroplating efficiency according to claim 3, characterized in that: The horizontal reciprocating assembly includes a horizontal reciprocating motor (13) fixed on the pool body (1), and a sidewall cam that abuts against the sidewall of the end sliding block (3) is fixed on the output shaft of the horizontal reciprocating motor (13).

5. An electroplating bath with improved electroplating efficiency according to claim 3, characterized in that: The horizontal reciprocating assembly includes a drive cylinder (12) fixed on the pool body (1), and the output shaft of the drive cylinder (12) is fixed on a sliding block (3) at the end.

6. An electroplating bath with improved electroplating efficiency according to any one of claims 4 or 5, characterized in that: The sliding block (3) has an arc-shaped rotating groove (14), and a rotating block (15) is rotatably arranged in the rotating groove (14). The cathode plate is connected to the corresponding rotating block (15). The sliding block (3) is provided with a rotating assembly that drives the rotating block (15) to rotate in the rotating groove (14).

7. An electroplating bath with improved electroplating efficiency according to claim 6, characterized in that: The bottom wall of the rotating groove (14) is provided with an extension groove that extends vertically through the sliding block (3). The rotating assembly includes a rotating rod (16) fixed to the bottom of the rotating block (15) and passing through the extension groove. The lower end of the rotating rod (16) has a smooth arc structure and protrudes from the lower end face of the sliding block (3). A return spring (17) is provided in the extension groove and sleeved on the rotating rod (16). The two ends of the return spring (17) are fixed to the inner wall of the extension groove and the rotating rod (16) respectively, so that the rotating rod (16) is set vertically. During the movement of the driving block (5), the rotating rod (16) is pushed to rotate.

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