Electroplating bath for improving the quality of the coating

Abstract

The embodiment of the application provides an electroplating bath for improving plating quality, and relates to the technical field of electroplating equipment, and comprises an electroplating bath body, a gas pipeline system is laid on the bottom of the electroplating bath body, the gas pipeline system comprises a vertical gas inlet pipe, a gas pump is connected to the upper end of the gas inlet pipe, a horizontal communication pipe is connected to the lower end of the gas inlet pipe, a plurality of gas outlet pipes are vertically fixed on the communication pipe, and a plurality of gas outlet holes are formed in the gas outlet pipes. The application has the effects of facilitating hydrogen discharge and improving the uniformity of the chemical solution.

Description

Technical Field

[0001] This utility model relates to the field of electroplating equipment technology, and in particular to an electroplating tank for improving the quality of the plating layer. Background Technology

[0002] In the electroplating industry, the electroplating process is based on the principle of electrolysis. When an electrochemical reaction occurs at the anode and cathode, hydrogen evolution inevitably occurs on the cathode surface. For example, during the nickel plating process on hardware parts, as the plating time increases, a large amount of hydrogen gas adheres to the workpiece surface, forming tiny bubbles. This not only leads to defects such as pinholes and pitting in the plating layer, reducing the product's aesthetics and corrosion resistance, but in severe cases, it can also reduce the adhesion between the plating layer and the substrate, causing the plating layer to peel off.

[0003] During the electroplating process, hydrogen evolution occurs during normal anode and cathode electroplating. If this evolved hydrogen gas cannot be discharged in time, it will adhere to the surface of the workpiece and form bubbles, leading to defects such as pinholes and pits in the electroplated layer, which seriously affects the surface quality and aesthetics of the electroplated layer.

[0004] Meanwhile, the presence of hydrogen reduces the adhesion between the coating and the substrate, making the coating prone to peeling and flaking, greatly weakening the corrosion resistance and service life of electroplated products. Furthermore, uneven agitation of the chemicals in the electroplating bath leads to low electroplating efficiency, increased energy consumption, and difficulty in ensuring the uniformity and consistency of the electroplated layer, resulting in a higher product defect rate and seriously affecting the company's production efficiency and market competitiveness. Utility Model Content

[0005] To facilitate the discharge of hydrogen and improve the uniformity of the chemical solution, this application provides an electroplating bath for improving coating quality.

[0006] The electroplating bath for improving coating quality provided in this application adopts the following technical solution:

[0007] An electroplating tank for improving coating quality includes an electroplating tank body, a ventilation pipeline system laid at the bottom of the electroplating tank body, the ventilation pipeline system including a vertically arranged air inlet pipe, an air pump connected to the upper end of the air inlet pipe, a horizontally arranged connecting pipe connected to the lower end of the air inlet pipe, and multiple exhaust pipes vertically fixed on the connecting pipe, the exhaust pipes having a plurality of exhaust holes.

[0008] Furthermore, the exhaust port is inclined downwards, and the angle between the axis of the exhaust port and the horizontal plane is 30° to 50° below the horizontal plane.

[0009] Furthermore, a plurality of connectors are fixed on the connecting pipe, the end of the exhaust pipe is inserted into the connector, the other end of the exhaust pipe is open, and an end cap for closing the opening is threadedly connected at the opening position.

[0010] Furthermore, the end cap includes a fixed cylinder with openings at both ends and one end threadedly connected to the exhaust pipe. A sliding plug for sealing the fixed cylinder is movably disposed inside the fixed cylinder. A fixed spring is fixed inside the fixed cylinder to pull the sliding plug toward the inside of the fixed cylinder. A discharge notch is opened on the end face of the sliding plug opposite to the exhaust pipe. When the air pressure increases and the sliding plug moves toward the outside of the fixed cylinder, impurities are discharged from the discharge notch.

[0011] Furthermore, the bottom of the electroplating tank body is provided with a fixing frame for fixing the ventilation pipeline system. The fixing frame includes a fixing plate fixedly connected to the bottom of the electroplating tank body and an elastic clamping block for clamping the ventilation pipeline.

[0012] Furthermore, a gas flow regulating valve is provided on the air intake pipe.

[0013] Furthermore, a sealing gasket is fixed to the end of the exhaust pipe to provide a sealing function.

[0014] Furthermore, the exhaust pipes are evenly spaced along the length of the connecting pipe.

[0015] In summary, this application includes at least one of the following beneficial technical effects: by introducing gas into the gas pipeline system through an air pump, the gas enters the solution, quickly removing hydrogen adhering to the workpiece surface and the bath solution, while creating conditions for sufficient contact between hydrogen and oxygen, effectively eliminating the adverse effects of hydrogen on electroplating quality, and effectively agitating the bath solution to ensure uniform distribution of ions in the solution, more even stirring of the chemicals, ensuring uniform dispersion of metal ions, additives and other components in the electroplating solution, and improving the uniformity and consistency of the electroplated layer. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0017] Figure 2 This is a schematic diagram of the exhaust pipe structure.

[0018] Figure 3 This is a structural schematic diagram of the fixing frame according to an embodiment of this application.

[0019] Figure 4 This is a cross-sectional view of the end cap of an embodiment of this application.

[0020] Explanation of reference numerals in the attached drawings: 1. Electroplating tank body; 2. Air inlet pipe; 3. Connecting pipe; 4. Exhaust pipe; 5. Exhaust hole; 6. Connector; 7. End cap; 8. Fixing cylinder; 9. Sliding plug; 10. Fixing spring; 11. Discharge notch; 12. Fixing frame; 13. Fixing plate; 14. Elastic clamp; 15. Sealing gasket. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0024] An electroplating tank for improving coating quality includes an electroplating tank body 1. A ventilation pipeline system is laid at the bottom of the electroplating tank body 1. The ventilation pipeline system includes a vertically arranged air inlet pipe 2, a gas flow regulating valve installed on the air inlet pipe 2, an air pump connected to the upper end of the air inlet pipe 2, and a horizontally arranged connecting pipe 3 connected to the lower end of the air inlet pipe 2. Both ends of the connecting pipe 3 are closed, and the connecting pipe 3 extends along the length direction of the electroplating tank body 1. Several exhaust pipes 4 are detachably connected to the connecting pipe 3, and the exhaust pipes 4 are evenly distributed along the length direction of the connecting pipe 3. The exhaust pipes 4 extend perpendicular to the connecting pipe 3 and along the width direction of the electroplating tank body 1. Several exhaust holes 5 are opened on the exhaust pipes 4 to allow ventilation into the electroplating tank body 1.

[0025] Reference Figure 1 and Figure 2 Several exhaust holes 5 are distributed along the length of the exhaust pipe 4. Several exhaust holes 5 are inclined downward and in the same direction. The angle between the axis of the exhaust hole 5 and the horizontal plane is 30° to 50° below the horizontal plane, with 45° being preferred.

[0026] The exhaust port 5 is tilted downwards at 45°. Firstly, this angle allows the discharged compressed air to agitate the electroplating solution with appropriate direction and force, quickly removing hydrogen adhering to the workpiece surface and the plating bath. Simultaneously, it creates conditions for sufficient contact between hydrogen and oxygen, promoting their reaction and effectively eliminating the adverse effects of hydrogen on electroplating quality. Secondly, the 45° angle of the discharged compressed air more effectively agitates the plating bath, ensuring a uniform distribution of ions and reducing resistance differences caused by localized ion aggregation. This, in turn, lowers the voltage within the plating bath, stabilizes the electrical performance during the electroplating process, and reduces energy consumption. Thirdly, the 45° tilt angle causes the discharged airflow to form a spiral or vortex flow within the plating bath. Compared to vertical or other angles, this flow pattern more evenly agitates the plating solution, ensuring uniform dispersion of metal ions, additives, and other components, thus improving the uniformity and consistency of the electroplated layer.

[0027] Reference Figure 1 and Figure 2 A number of connectors 6 are fixed on the connecting pipe 3. The end of the exhaust pipe 4 is inserted into the connector 6. The other end of the exhaust pipe 4 is open, and an end cap 7 for closing the opening is threadedly connected at the opening position.

[0028] Reference Figure 2 and Figure 3 The end cap 7 includes a fixed cylinder 8 with openings at both ends. One end of the fixed cylinder 8 is threadedly connected to the exhaust pipe 4. A sliding plug 9 for sealing the fixed cylinder 8 is movably disposed inside the fixed cylinder 8. A fixed spring 10 is fixed inside the fixed cylinder 8 to pull the sliding plug 9 toward the inside of the fixed cylinder 8. A discharge notch 11 is provided on the sliding plug 9, which is directly opposite the exhaust pipe 4 and is located at the bottom of the sliding plug 9. Sealing gaskets 15 are fixed at both ends of the exhaust pipe 4, respectively abutting against the inner wall of the connector 6 and the fixed cylinder 8, and playing a sealing role. In order to improve the sealing performance, abutment rings can also be fixed inside the connector 6 and the fixed cylinder 8, so that the sealing gaskets 15 at both ends abut against the corresponding abutment rings.

[0029] During normal operation of the exhaust pipe 4, air bubbles enter the solution through the exhaust hole 5. By increasing the exhaust volume of the exhaust pipe 4, the internal pressure is increased. When the pressure reaches a certain value, it pushes the sliding plug 9 to move outward toward the fixed cylinder 8, and the impurities in the exhaust pipe 4 are discharged from the discharge notch 11.

[0030] Reference Figure 1 and Figure 3 The electroplating tank body 1 has a fixed frame 12 at the bottom. The fixed frame 12 is used to fix the ventilation pipeline system. The fixed frame 12 includes a fixed plate 13 fixedly connected to the bottom of the electroplating tank body 1 and an elastic clamping block 14 fixed to the upper surface of the fixed plate 13 and used to clamp the ventilation pipeline.

[0031] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. Any equivalent modifications or variations made by those skilled in the art based on the content disclosed in the present invention should be included within the scope of protection set forth in the claims.

Claims

1. An electroplating bath for improving the quality of a plating layer, comprising an electroplating bath body (1), characterized in that, The bottom of the electroplating tank body (1) is provided with a ventilation pipeline system, which includes a vertically arranged air inlet pipe (2), an air pump connected to the upper end of the air inlet pipe (2), and a horizontally arranged connecting pipe (3) connected to the lower end of the air inlet pipe (2). Multiple exhaust pipes (4) are vertically fixed on the connecting pipe (3), and several exhaust holes (5) are opened on the exhaust pipes (4).

2. The electroplating cell of claim 1, wherein, The exhaust port (5) is inclined downwards, and the angle between the axis of the exhaust port (5) and the horizontal plane is 30° to 50° below the horizontal plane.

3. The electroplating cell of claim 2, wherein the cell is configured to provide a flow of the electrolyte in the direction of the flow of the plating solution. 5 The connecting pipe (3) is fixed with several connectors (6), the end of the exhaust pipe (4) is inserted into the connector (6), the other end of the exhaust pipe (4) is open, and an end cap (7) for closing the opening is threadedly connected at the opening position.

4. The electroplating bath for improving coating quality according to claim 3, characterized in that, The end cap (7) includes a fixed cylinder (8) with openings at both ends and one end threadedly connected to the exhaust pipe (4). A sliding plug (9) for sealing the fixed cylinder (8) is movably disposed inside the fixed cylinder (8). A fixed spring (10) is fixed inside the fixed cylinder (8) to pull the sliding plug (9) toward the fixed cylinder (8). A discharge notch (11) is opened on the end face of the sliding plug (9) opposite to the exhaust pipe (4). When the air pressure increases and the sliding plug (9) moves toward the outside of the fixed cylinder (8), impurities are discharged from the discharge notch (11).

5. The electroplating bath for improving coating quality according to claim 1, characterized in that, The electroplating tank body (1) is provided with a fixing frame (12) for fixing the ventilation pipeline system at the bottom. The fixing frame (12) includes a fixing plate (13) fixedly connected to the bottom of the electroplating tank body (1) and an elastic clamp (14) for clamping the ventilation pipeline.

6. The electroplating bath for improving coating quality according to claim 1, characterized in that, A gas flow regulating valve is provided on the air inlet pipe (2).

7. The electroplating bath for improving coating quality according to claim 4, characterized in that, The exhaust pipe (4) has a sealing gasket (15) fixed at its end for sealing purposes.

8. The electroplating bath for improving coating quality according to claim 1, characterized in that, The exhaust pipes (4) are evenly distributed along the length of the connecting pipe (3).

Images