Barrel plating equipment for electroplating

Abstract

The utility model relates to electroplating barrel plating equipment, which comprises an electroplating bath and a roller, one end of the roller is rotatably arranged on a support plate I through a rotating shaft I, the other end of the roller is rotatably arranged on a support plate II through a rotating shaft II, the roller is provided with an opening capable of being buckled, the opening is used for taking and placing parts to be plated, and the side wall of the roller is provided with a plurality of through holes. A plurality of conductive rods are arranged in the roller in the circumferential direction, a plurality of conductive heads are arranged on each conductive rod at intervals, the conductive rods extend in the length direction of the roller, one end of each conductive rod extends to the second rotating shaft to form a conductive end, and a first conductive bearing bush and a second conductive bearing bush corresponding to the conductive ends are arranged on the second supporting plate. The utility model further comprises a plating solution forced circulation system. The contact area of the conductive head and a part to be plated is increased, the problems of virtual connection and overheating caused by floating of the free conductive head are solved, meanwhile, the plating solution forced circulation system enables the temperature and ion concentration of the plating solution inside and outside the roller to be more uniform, and the electroplating efficiency and quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of electroplating equipment technology, and specifically to an electroplating barrel plating equipment. Background Technology

[0002] Electroplating is a surface finishing process that uses the substrate metal as the cathode. Through electrolysis, the cations of the metal to be plated in the plating solution are deposited on the surface of the substrate metal to form a coating. The most commonly used tool is the electroplating drum. During the electroplating process, the part to be plated is placed inside the drum, which contains electrodes. The electrodes contact the part to be plated to form a current circuit. The drum rolls in the electroplating solution to ensure that every part is in good contact with the solution, thus forming a comprehensive coating on the part surface. In existing technologies, two conductive heads are generally placed freely inside the drum. Free-floating conductive heads tend to float on top of the part, causing problems such as poor connection and overheating, resulting in low current efficiency, long plating time, unstable plating quality, and uneven coating thickness. For some small parts, especially sheet-like parts, adhesion between the sheets may prevent the electroplating solution from properly contacting all surfaces, making it difficult to obtain an ideal coating. Utility Model Content

[0003] This utility model addresses the existing technical problems by providing an electroplating barrel plating device.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An electroplating barrel plating device includes an electroplating tank and a barrel located in the electroplating tank. One end of the barrel is rotatably mounted on a support plate 1 via a rotating shaft 1, and the other end is rotatably mounted on a support plate 2 via a rotating shaft 2. The barrel is provided with a snap-fit ​​opening for taking and placing parts to be plated. The side wall of the barrel is provided with several through holes. A plurality of conductive rods are evenly arranged circumferentially on the inner wall of the barrel. A plurality of conductive heads are spaced apart on each conductive rod. The conductive rods extend along the length direction of the barrel, and one end of the plurality of conductive rods extends to the rotating shaft 2 to form a conductive end. The support plate 2 is provided with a second conductive bearing corresponding to the conductive end. The second conductive bearing is located below the rotating shaft 2 and is electrically connected to the negative terminal of the power supply.

[0005] Based on the above technical solution, the present invention can be further improved as follows:

[0006] Preferably, the second support plate is further provided with a first conductive bearing corresponding to the conductive end. The first conductive bearing is located above the second rotating shaft and is electrically connected to the positive terminal of the power supply, making the rotating conductive rod above it an auxiliary anode. That is, there is a main anode in the electroplating tank, and the conductive rod electrically connected to the first conductive bearing forms an auxiliary anode, which helps to improve conductivity. At the same time, at least one conductive rod is electrically connected to the first conductive bearing, and at least two other conductive rods are electrically connected to the second conductive bearing.

[0007] Preferably, the roller is a cylindrical or polygonal tube, and the conductive rod includes at least 6 rods.

[0008] Preferably, the roller is a regular hexagonal cylinder, and the conductive rod is disposed at the inner corner of the roller.

[0009] Preferably, the first conductive bearing and the second conductive bearing have the same arc, both being 120°-150°.

[0010] Preferably, the curvature of the first conductive bearing is smaller than that of the second conductive bearing, and the curvature of the second conductive bearing is greater than 180°, so that more parts to be plated can be placed inside the drum.

[0011] Preferably, it also includes a plating solution forced circulation system, which is used to force the plating solution inside and outside the drum to circulate.

[0012] Preferably, the forced circulation system for the plating solution includes a circulation device, a first circulation pipe, and a second circulation pipe. The first end of the first circulation pipe extends into the drum, the first end of the circulation device is connected to the second end of the first circulation pipe, the second end of the circulation device is connected to the first end of the second circulation pipe, and the second end of the second circulation pipe extends into the electroplating tank and is placed outside the drum.

[0013] Preferably, a support column is installed on the first support plate, and a cathode conductive column and an anode conductive column, which serve both supporting and conductive functions, are installed on the second support plate. The roller is supported on the electroplating tank via the support column, the cathode conductive column, and the anode conductive column. The lower ends of the support column, the cathode conductive column, and the anode conductive column are all V-shaped. The electroplating tank is provided with corresponding positioning grooves at positions that are compatible with the support column, the cathode conductive column, and the anode conductive column. The positioning grooves are V-shaped.

[0014] The beneficial effects of this invention are as follows: By arranging multiple conductive rods circumferentially within the drum and attaching multiple conductive heads to these rods, the contact area between the conductive heads and the parts to be plated is increased, solving the problems of loose connections and overheating caused by floating free conductive heads. This improves electroplating efficiency and saves electroplating time. When the drum rotates, it drives the conductive heads to rotate, which stirs the parts to be plated, improving or preventing the adhesion of sheet-like parts, increasing the uniformity of the electroplating thickness, and solving the problems of uneven plating or missed plating. By setting conductive bushings that are electrically connected to at least two conductive rods simultaneously, conductivity is ensured. In particular, the increased curvature of the second conductive bushing, located at the bottom and serving as the negative electrode, increases the drum's loading capacity, further increasing the number of parts that can be electroplated simultaneously and improving electroplating efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 This is a top view of the present invention;

[0017] Figure 3 for Figure 2 Schematic diagram of the cross section at point AA;

[0018] Figure 4 This is a schematic diagram of the process of removing the electroplating tank according to this utility model;

[0019] Figure 5 This is a schematic diagram of the present invention when the second support plate is removed.

[0020] The attached diagram is labeled as follows: 1. Electroplating tank; 2. Drum; 3. Support plate one; 4. Support plate two; 5. Rotating shaft one; 6. Rotating shaft two; 7. Driving gear; 8. Driven gear one; 9. Driven gear two; 10. Conductive rod; 11. Conductive head; 12. First conductive bearing; 13. Anode conductive busbar; 14. Anode conductive column; 15. Second conductive bearing; 16. Cathode conductive busbar; 17. Cathode conductive column; 18. Support column; 19. Positioning groove; 20. Inner tube; 21. Circulation pipe two; 22. Connecting rod; 23. Opening; 24. Adaptor pipe. Detailed Implementation

[0021] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0022] like Figures 1 to 5As shown, this utility model discloses an electroplating barrel plating device, including an electroplating tank 1 and a drum 2 located inside the electroplating tank 1. One end of the drum 2 is rotatably mounted on a support plate 3 via a rotating shaft 5, and the other end is rotatably mounted on a support plate 4 via a rotating shaft 6. The support plate 3 and the support plate 4 are fixedly connected together by a connecting rod 22. Driven gears 9 are respectively provided at both ends of the drum 2. Driven gears 8 are coaxially arranged on the support plates 3 and 4, meshing with the driven gears 9. The driven gears 8 are also coaxially fixedly connected to a driving gear 7, which is driven to rotate by an external power source, thereby driving the drum 2 to rotate. The electroplating tank 1 is used to hold the electroplating solution. The drum 2 is provided with a snap-fit ​​opening 23 for taking out and placing parts to be plated. After the parts to be plated are placed into the drum 2, the cover is closed. When the plate is fastened to the opening 23 (not shown in the cover plate diagram), the roller 2 forms a closed space, preventing the components loaded inside from detaching from the roller 2 during rotation. The roller 2 has several through holes to ensure that sufficient electroplating solution can freely enter and exit the roller 2. Multiple conductive rods 10 are arranged circumferentially inside the roller 2, and multiple conductive heads 11 are spaced apart on each conductive rod 10. The conductive rods 10 extend along the length of the roller 2, and the conductive heads 11 extend approximately along the radial direction of the roller 2, that is, the conductive heads 11 extend from the inner wall of the roller 2 into the inner cavity of the roller 2. The end of each conductive rod 10 extends to the surface of the second rotating shaft 6 to form a conductive end. The second support plate 4 has a second conductive bearing 15 corresponding to the conductive end. The second conductive bearing 15 is located below the second rotating shaft 6 and is electrically connected to the negative terminal of the power supply. Furthermore, a first conductive bearing 12 is provided on the second support plate 4 above the second rotating shaft 6 and is electrically connected to the positive terminal of the power supply to form an auxiliary anode. During rotation, the conductive ends of each conductive rod 10 extending to the second rotating shaft 6 will make sliding conductive contact with the first conductive bearing 12 and the second conductive bearing 15 respectively. Supporting plates 3 and 4 are respectively provided with supporting columns 18. The supporting columns on the second supporting plate 4 also serve as cathode conductive columns 17 and anode conductive columns 14 respectively. The cathode conductive column 17 is electrically connected to the second conductive bearing 15, and the anode conductive column 14 is electrically connected to the first conductive bearing 12.

[0023] Therefore, during the rotation of the drum 2, the components placed inside the drum 2 accumulate in the lower part of the drum 2 under the action of gravity. Thus, the conductive head 11 located in the lower part is embedded inside the components, ensuring the stability of the electrical connection. Since the conductive head 11 extends radially, it also stirs the components during the rotation of the drum 2, further ensuring that the components are dispersed and avoiding adhesion between components, especially between thin sheet-like components. The first conductive bearing 12 and the second conductive bearing 15 have the same arc, which is 120° to 150°. In this embodiment, the arc of the first conductive bearing 12 and the second conductive bearing 15 is 150°, the cross section of the roller 2 is a regular hexagon, and a conductive rod 10 is provided on each inner corner. Therefore, the degree span of two adjacent conductive rods 10 is 60°. This means that at any given time, at least two conductive rods 10 below the roller 2 are in contact with the second conductive bearing 15 to achieve electrical connection, and at least two conductive rods 10 above the roller 2 are in contact with the first conductive bearing 12 to achieve electrical connection. This ensures that at least two conductive rods 10 in the electroplating solution are connected to the positive electrode and at least two conductive rods 10 are connected to the negative electrode, thus ensuring the stability of the electroplating current.

[0024] The roller 2 can also be a cylinder or other cylindrical structures with multiple edges. The conductive rod 10 includes at least 6 rods. When the roller 2 is a cylinder, multiple conductive rods 10 are evenly arranged circumferentially inside the roller 2.

[0025] Furthermore, the support plate 4 is equipped with an anode conductive bus 13 and a cathode conductive bus 16. The two ends of the anode conductive bus 13 are electrically connected to the anode conductive post 14 and the first conductive bearing 12, respectively. The anode conductive post 14 is electrically connected to the power supply anode. One end of the cathode conductive bus 16 is electrically connected to the cathode conductive post 17, and the other end is electrically connected to the second conductive bearing 15. The cathode conductive post 17 is used to connect to the power supply cathode. Both the anode conductive bus 13 and the cathode conductive bus 16 are flat, possessing high conductivity and current carrying capacity, improving energy efficiency, and exhibiting good heat dissipation, thus enhancing safety and reliability. Furthermore, their compact layout saves space.

[0026] Furthermore, the curvature of the first conductive bearing 12 and the second conductive bearing 15 can be the same or different. The curvature of the second conductive bearing 15 located below can also be greater than that of the first conductive bearing 12 located above, and the curvature of the second conductive bearing 15 is greater than 180°. For example, the curvature of the second conductive bearing 15 can also be 230°. At the same time, the curvature of the first conductive bearing 12 is generally controlled within 100°, that is, a 15° curvature interval should be maintained between the first conductive bearing 12 and the second conductive bearing 15 to ensure that this interval is greater than the curvature occupied by the exposed part of a single conductive rod at the conductive end. This avoids the situation where the first conductive bearing 12 and the second conductive bearing 15 are simultaneously contacted by a single conductive rod, resulting in a direct connection between the positive and negative terminals of the power supply and causing a short circuit. By increasing the curvature of the second conductive bearing 15, the number of parts to be plated loaded in the drum 2 can be further increased, thereby improving the electroplating efficiency. In this embodiment, the arc of the first conductive bearing 12 and the second conductive bearing 15 is 150°, ensuring that there are always at least two conductive rods 10 at each of the first conductive bearing 12 and the second conductive bearing 15 in a conductive state, thereby further improving the electroplating effect and efficiency of the parts to be plated.

[0027] The electroplating barrel plating equipment also includes a forced circulation system for the plating solution, which forces the electroplating solution inside and outside the barrel 2 to circulate. The forced circulation system includes a circulation device, a first circulation pipe, and a second circulation pipe 21. The circulation device is connected to both circulation pipes 1 and 21. The first end of circulation pipe 1 extends into the barrel 2, and the first end of the circulation device is connected to the second end of circulation pipe 1. The second end of the circulation device is connected to the first end of circulation pipe 21, and the second end of circulation pipe 21 extends into the electroplating tank 1 and is positioned outside the barrel 2. The circulation device can be a circulation pump or a circulation filter. The circulation device forces the electroplating solution inside the barrel 2 to circulate with the electroplating solution outside the barrel 2 (i.e., the electroplating solution in the electroplating tank 1), achieving circulating flow of the electroplating solution, reducing the concentration difference inside and outside the barrel 2, greatly improving current efficiency, and reducing the temperature difference inside and outside the barrel 2. This not only improves the electroplating quality but also makes barrel plating of some room temperature and low temperature plating types possible.

[0028] Furthermore, the circulation pipe includes an inner pipe 20 and a transfer pipe 24. The inner pipe 20 is mounted on the rotating shaft 5 via a bearing. One end of the inner pipe 20 extends into the drum 2 along the rotating shaft 5, and the other end is provided with a frustum-shaped connection port. The transfer pipe 24 is provided with a corresponding umbrella-shaped connection port, which is used to connect with the frustum-shaped connection port. The end of the transfer pipe 24 away from the umbrella-shaped connection port is connected to the first end of the circulation device.

[0029] Furthermore, a secondary tank can be set up, and the electroplating solution circulates between the electroplating tank 1 and the secondary tank, which makes it convenient to add chemicals in the secondary tank at any time.

[0030] In this embodiment, specifically, the upper end of the electroplating tank 1 is provided with positioning grooves 19 corresponding to the support column 18, the cathode conductive column 17, and the anode conductive column 14. The positioning grooves 19 cooperate with the support column 18, the cathode conductive column 17, and the anode conductive column 14 to provide support and conduct electricity to the support plate 3 and the support plate 4, ensuring that the roller 2 can work normally.

[0031] Furthermore, the lower ends of the support column 18, cathode conductive column 17, and anode conductive column 14 are V-shaped, and the positioning groove 19 is a V-shaped groove, which realizes the function of stable support for support plate 1 3 and support plate 2 4, reduces shaking, improves the stability of the roller 2 during operation, and further improves the uniformity and safety of electroplating.

[0032] Furthermore, the outer diameter of driven gear 2 9 is larger than that of driven gear 1 8, which serves to reduce speed and increase the conveying torque, ensuring that there is a sufficiently large torque to drive the roller 2 to rotate, ensuring the smoothness of the rotation of the roller 2, and ensuring the electroplating effect of the parts to be plated.

[0033] Furthermore, the second rotating shaft 6 is mounted on one of the driven gears 9. The driven gear 9 has a through hole and a radial hole corresponding to the conductive rod 10. The part of the conductive rod 10 that passes through the through hole is called the conductive end. The conductive end is laid in the radial hole and then bent and laid in the arc-shaped groove in the axial direction of the second rotating shaft 6. The arc-shaped groove plays a role in positioning the conductive end and exposes at least part of the side wall of the conductive end, so that the conductive end can be electrically connected to the first conductive bearing 12 or the second conductive bearing 15. The overall structure is compact, occupies little space, reduces the occurrence of flying wires, and ensures the normal rotation of the roller 2.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electroplating barrel plating apparatus, comprising an electroplating tank (1) and a barrel (2) located within the electroplating tank (1), characterized in that, One end of the roller (2) is rotatably mounted on the support plate (3) via the first rotating shaft (5), and the other end is rotatably mounted on the support plate (4) via the second rotating shaft (6). The roller (2) is provided with a snap-fit ​​opening (23) for taking out and placing parts to be plated. The side wall of the roller (2) is provided with several through holes. The inner wall of the roller (2) is uniformly provided with multiple conductive rods (10) in the circumferential direction. Each conductive rod (10) is provided with multiple conductive heads (11) at intervals. The conductive heads (11) extend approximately radially. The conductive rods (10) extend along the length direction of the roller (2). One end of the conductive rod (10) extends to the second rotating shaft (6) to form a conductive end. The second support plate (4) is provided with a second conductive bearing (15) corresponding to the conductive end. The second conductive bearing (15) is located below the second rotating shaft (6) and is electrically connected to the negative terminal of the power supply.

2. The electroplating barrel plating equipment according to claim 1, characterized in that, The second support plate (4) is also provided with a first conductive bearing (12) corresponding to the conductive end. The first conductive bearing (12) is located above the second rotating shaft (6) and is electrically connected to the positive terminal of the power supply.

3. The electroplating barrel plating equipment according to claim 2, characterized in that, The roller (2) is a cylindrical or polygonal tube, and the conductive rod (10) includes at least 6 rods.

4. The electroplating barrel plating equipment according to claim 3, characterized in that, The roller (2) is a regular hexagonal prism, and the conductive rod (10) is located at the inner corner of the roller (2).

5. The electroplating barrel plating equipment according to any one of claims 2-4, characterized in that, The first conductive bearing (12) and the second conductive bearing (15) have the same arc, which is 120° to 150°.

6. The electroplating barrel plating equipment according to any one of claims 2-4, characterized in that, The arc of the first conductive bearing (12) is smaller than that of the second conductive bearing (15), and the arc of the second conductive bearing (15) is greater than 180°.

7. The electroplating barrel plating equipment according to claim 1, characterized in that, It also includes a plating solution forced circulation system, which is used to force the plating solution inside and outside the drum (2) to circulate.

8. The electroplating barrel plating equipment according to claim 7, characterized in that, The forced circulation system of the plating solution includes a circulation device, a circulation pipe one and a circulation pipe two (21). The first end of the circulation pipe one extends into the drum (2). The first end of the circulation device is connected to the second end of the circulation pipe one. The second end of the circulation device is connected to the first end of the circulation pipe two (21). The second end of the circulation pipe two (21) extends into the electroplating tank (1) and is placed outside the drum (2).

9. The electroplating barrel plating equipment according to any one of claims 2-4, characterized in that, A support column (18) is installed on the first support plate (3), and a cathode conductive column (17) and an anode conductive column (14) that serve both supporting and conductive functions are installed on the second support plate (4). The roller (2) is supported on the electroplating tank (1) via the support column (18), the cathode conductive column (17) and the anode conductive column (14). The electroplating tank (1) is provided with corresponding positioning grooves (19) at positions that are compatible with the support column (18), the cathode conductive column (17) and the anode conductive column (14).

Images