Barrel plating equipment for electroplating

Abstract

The electroplating barrel plating equipment comprises an electroplating bath and a roller, one end of the roller is rotatably installed on a first supporting plate through a first rotating shaft, the other end of the roller is rotatably installed on a second supporting plate through a second rotating shaft, the roller is provided with an opening capable of being buckled, the opening is used for taking and placing a to-be-plated part, and a plurality of through holes are formed in the side wall of the roller; 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 invention further comprises a plating solution forced circulation system. The contact area of the conductive head and a to-be-plated part 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 plating solutions inside and outside the roller to be more uniform, and the electroplating efficiency and quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electroplating equipment, and in particular to an electroplating roller plating equipment. Background Art

[0002] The electroplating process is a surface processing method that uses the base metal to be plated as the cathode, and through electrolysis, the cations of the pre-plated metal in the plating solution are deposited on the surface of the base metal to form a coating. The most commonly used tool is the electroplating drum. During the electroplating process, the parts to be plated are placed in the electroplating drum, and electrodes are arranged in the electroplating drum. The electrodes contact the parts to be plated to realize the current loop. The electroplating drum rolls in the electroplating solution so that each position of the parts can be well contacted with the electroplating solution to form a full-scale coating on the surface of the parts. In the prior art, two conductive heads are generally placed freely in the electroplating drum. The free-style conductive head is easy to float on the top of the part, causing problems of virtual connection and heating, resulting in low current efficiency, long electroplating time, unstable quality of the plated parts, and uneven coating thickness. Some small parts, especially sheet parts, are likely to be unable to contact all surfaces of the parts well due to the adhesion between the sheet parts, making it difficult to obtain an ideal coating. Summary of the invention

[0003] The invention aims at solving the existing technical problems and provides an electroplating roller plating device.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: an electroplating roller plating equipment, comprising an electroplating tank and a roller located in the electroplating tank, one end of the roller is rotatably mounted on a support plate one through a rotating shaft one, and the other end is rotatably mounted on a support plate two through a rotating shaft two, the roller is provided with a snap-fitting opening, the opening is used to take and place the parts to be plated, a plurality of through holes are provided on the side wall of the roller, a plurality of conductive rods are evenly arranged circumferentially on the inner wall of the roller, each of the conductive rods is provided with a plurality of conductive heads at intervals, the conductive rods extend along the length direction of the roller, and one end of the plurality of conductive rods extends to the rotating shaft two to form a conductive end head, a second conductive bearing corresponding to the conductive end head is provided on the support plate two, the second conductive bearing is located below the rotating shaft two and is electrically connected to the negative pole of the power supply.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows:

[0006] Preferably, the second support plate is also provided with a first conductive bushing corresponding to the conductive end, the first conductive bushing is located above the second rotating shaft, and is electrically connected to the positive electrode of the power supply, so that the conductive rod rotating above becomes an auxiliary anode, that is, there is a main anode in the electroplating tank, and the conductive rod electrically connected to the first conductive bushing forms an auxiliary anode, which helps to improve the conductive performance. At the same time, at least one conductive rod is electrically connected to the first conductive bushing, and at the same time, at least two other conductive rods are electrically connected to the second conductive bushing.

[0007] Preferably, the roller is a cylinder or a polygonal cylinder, and the conductive rods include at least 6.

[0008] Preferably, the drum is a regular hexagonal cylinder, and the conductive rods are arranged at the inner corners of the drum.

[0009] Preferably, the first conductive bearing bush and the second conductive bearing bush have the same arc angle, both of which are 120°-150°.

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

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

[0012] Preferably, the forced circulation system of the plating solution includes a circulation device, a circulation pipe 1 and a circulation pipe 2, the first end of the circulation pipe 1 extends into the drum, the first end of the circulation device is connected to the second end of the circulation pipe 1, the second end of the circulation device is connected to the first end of the circulation pipe 2, the second end of the circulation pipe 2 extends into the electroplating tank and is placed outside the drum.

[0013] Preferably, the circulation pipe 1 includes an inner pipe and a transfer pipe, the inner pipe is installed on the rotating shaft 1, one end of the inner pipe extends into the drum, and the other end is provided with a truncated cone docking port, and the transfer pipe is provided with a corresponding umbrella-shaped docking port, and the umbrella-shaped docking port is used for docking and connecting with the truncated cone docking port, and the end of the transfer pipe away from the umbrella-shaped docking port is connected to the first end of the circulation device.

[0014] Preferably, a support column is installed on the support plate one, and a cathode conductive column and an anode conductive column which play both a supporting role and a conductive role are installed on the support plate two. The roller is mounted 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. Corresponding positioning grooves are provided at positions on the electroplating tank that match the support column, the cathode conductive column and the anode conductive column, and the positioning grooves are V-shaped.

[0015] The beneficial effects of the present invention are as follows: by arranging a plurality of conductive rods in the circumferential direction of the drum, and arranging a plurality of conductive heads on the conductive rods, the contact area between the conductive heads and the parts to be plated is increased, the problems of virtual connection and overheating caused by the floating of the free conductive heads are solved, the electroplating efficiency is improved and the electroplating time is saved. When the drum rotates, the conductive heads are driven to rotate, which plays a stirring role on the parts to be plated, improves or avoids the adhesion of sheet parts, improves the uniformity of electroplating thickness, and solves the problems of uneven coating or missed plating. By arranging a conductive bush, which is electrically connected to at least two conductive rods at the same time, the conductive performance is ensured, especially the increase in the curvature of the second conductive bush located at the bottom and serving as the negative electrode increases the loading capacity of the drum, further increases the parts to be electroplated at the same time, and improves the working efficiency of electroplating. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0017] Figure 2 It is a top view schematic diagram of the present invention;

[0018] Figure 3 for Figure 2 Schematic cross-sectional view at AA in the middle;

[0019] Figure 4 It is a schematic diagram of the present invention when removing the electroplating tank;

[0020] Figure 5 This is a schematic diagram of the present invention when the supporting plate 2 is removed.

[0021] The accompanying drawings are marked as follows: 1. electroplating tank; 2. roller; 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 row; 14. anode conductive column; 15. second conductive bearing; 16. cathode conductive row; 17. cathode conductive column; 18. support column; 19. positioning groove; 20. inner tube; 21. circulation tube two; 22. connecting rod; 23. opening; 24. transfer tube. DETAILED DESCRIPTION

[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0023] like Figures 1 to 5As shown, the present invention discloses an electroplating barrel plating device, comprising an electroplating tank 1 and a roller 2 located in the electroplating tank 1, one end of the roller 2 is rotatably mounted on a support plate 3 through a rotating shaft 5, and the other end is rotatably mounted on a support plate 4 through a rotating shaft 6, the support plate 3 and the support plate 4 are fixedly connected together through a connecting rod 22, and two ends of the roller 2 are respectively provided with a driven gear 29, and a driven gear 8 is coaxially arranged on the support plate 3 and the support plate 4, and the driven gear 8 is meshed with the driven gear 29, and the driven gear 8 is also coaxially fixedly connected with a driving gear 7, and the driving gear 7 is driven to rotate by an external power source, thereby driving the roller 2 to rotate; the electroplating tank 1 is used to contain the electroplating solution, and a snap-fitting opening 23 is provided on the roller 2, and the opening 23 is used to take and place the parts to be plated, and after the parts to be plated are placed in the roller 2, the cover plate is When the cover plate is buckled on the opening 23 (not shown in the figure), the drum 2 forms a closed space to prevent the parts loaded therein from being separated from the drum 2 during the rotation of the drum 2. The drum 2 is provided with a number of through holes to ensure that a sufficient amount of electroplating liquid can freely enter and exit the drum 2. A plurality of conductive rods 10 are provided in the inner circumference of the drum 2, and a plurality of conductive heads 11 are arranged at intervals on each conductive rod 10. The conductive rods 10 extend along the length direction of the drum 2, and the conductive heads 11 extend roughly along the radial direction of the drum 2, that is, the conductive heads 11 extend from the inner wall of the drum 2 to the inner cavity of the drum 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 supporting plate 4 is provided with a second conductive bearing bush 15 corresponding to the conductive end. The second conductive bearing bush 15 is located below the second rotating shaft 6 and is electrically connected to the negative pole of the power supply. Further, the first conductive bearing bush 12 is provided on the second supporting plate 4 above the second rotating shaft 6, which is electrically connected to the positive pole of the power supply to form an auxiliary anode. The conductive ends of each conductive rod 10 extending to the rotating shaft 2 6 will respectively make sliding conductive contact with the first conductive bearing 12 and the second conductive bearing 15 during the rotation process. Support columns 18 are respectively provided on the support plate 1 3 and the support plate 2 4. The support columns on the support plate 2 4 are also used 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.

[0024] Therefore, during the rotation of the drum 2, the components placed in the drum 2 are accumulated in the lower part of the drum 2 under the action of gravity, so that the conductive head 11 located at the lower part is buried inside the components, ensuring the stability of the electrical connection. In addition, since the conductive head 11 extends radially, it will also produce a stirring effect on the parts during the rotation of the drum 2, further ensuring that the components are dispersed, avoiding adhesion between components, especially between thin sheet components. The first conductive bearing 12 and the second conductive bearing 15 have the same arc angle, both of which are 120° to 150°. In this embodiment, the curvature 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, so the degree spanned by two adjacent conductive rods 10 is 60°, which means that at any time, at least two conductive rods 10 below the roller 2 are in contact with the second conductive bearing 15 at the same time to achieve electrical connection, and at the same time, at least two conductive rods 10 above the roller 2 are in contact with the first conductive bearing 12 at the same time to achieve electrical connection, that is, it is ensured 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, thereby ensuring the stability of the electroplating current.

[0025] The drum 2 may also be a cylinder or other multi-sided cylinders. The conductive rods 10 include at least 6. When the drum 2 is a cylinder, the plurality of conductive rods 10 are evenly arranged in the drum 2 in the circumferential direction.

[0026] Furthermore, an anode conductive bar 13 and a cathode conductive bar 16 are provided on the support plate 24, and the two ends of the anode conductive bar 13 are electrically connected to the anode conductive column 14 and the first conductive bushing 12 respectively, and the anode conductive bar 14 is electrically connected to the anode of the power supply, and one end of the cathode conductive bar 16 is electrically connected to the cathode conductive column 17, and the other end is electrically connected to the second conductive bushing 15, and the cathode conductive column 17 is used to be electrically connected to the cathode of the power supply. Among them, the anode conductive bar 13 and the cathode conductive bar 16 are both flat, have high conductivity and current carrying rate, improve energy efficiency, and have good heat dissipation effect, improve safety and reliability of use, and have a compact layout, saving space.

[0027] 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 at the bottom can also be greater than the curvature of the first conductive bearing 12 located at the top, 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° arc interval must be retained between the first conductive bearing 12 and the second conductive bearing 15, and it is necessary to ensure that the interval is greater than the arc occupied by the exposed portion of a single conductive rod on the conductive end, so as to avoid the situation where the first conductive bearing 12 and the second conductive bearing 15 are connected at the same time by a conductive rod and a short circuit occurs. By increasing the curvature of the second conductive bearing 15, the number of parts to be plated loaded in the drum 2 is further increased, thereby improving the electroplating efficiency. In this embodiment, the arc angle 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 in a conductive state at the first conductive bearing 12 and the second conductive bearing 15, further improving the electroplating effect and efficiency of the parts to be plated.

[0028] The electroplating barrel plating equipment also includes a plating solution forced circulation system, and the plating solution forced circulation system is used to force the plating solution inside and outside the drum 2 to circulate. The plating solution forced circulation system includes a circulation device, a circulation pipe 1 and a circulation pipe 2 21, and the circulation device is connected to the circulation pipe 1 and the circulation pipe 2 21 respectively. The first end of the circulation pipe 1 extends into the drum 2, the first end of the circulation device is connected to the second end of the circulation pipe 1, and the second end of the circulation device is connected to the first end of the circulation pipe 2 21, and the second end of the circulation pipe 2 21 extends into the electroplating tank 1 and is placed outside the drum 2. Among them, the circulation device can be a circulation pump or a circulation filter, that is, the circulation device forces the electroplating solution in the drum 2 to circulate with the electroplating solution outside the drum 2 (that is, the electroplating solution in the electroplating tank 1), so as to realize the circulation of the electroplating solution, reduce the concentration difference of the plating solution inside and outside the drum 2, greatly improve the current efficiency, and reduce the temperature difference between the inside and outside of the drum 2, which not only improves the electroplating quality, but also makes some normal temperature and low temperature plating barrel plating possible.

[0029] Furthermore, the circulation pipe 1 includes an inner pipe 20 and a transfer pipe 24. The inner pipe 20 is installed on the rotating shaft 5 through a bearing, that is, 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 truncated cone docking port. The transfer pipe 24 is provided with a corresponding umbrella-shaped docking port, and the umbrella-shaped docking port is used for docking and connecting with the truncated cone docking port. The end of the transfer pipe 24 away from the umbrella-shaped docking port is connected to the first end of the circulation device.

[0030] Furthermore, a sub-tank may be provided, and the electroplating solution circulates between the electroplating tank 1 and the sub-tank, so that it is convenient to add reagents and the like into the sub-tank at any time.

[0031] In this embodiment, specifically, the upper end of the electroplating tank 1 is provided with a positioning groove 19 corresponding to the support column 18, the cathode conductive column 17 and the anode conductive column 14. The positioning groove 19 cooperates with the support column 18, the cathode conductive column 17 and the anode conductive column 14 to achieve support and conduction of the support plate 1 3 and the support plate 2 4, ensuring that the roller 2 can work normally.

[0032] Furthermore, the lower ends of the support column 18, the cathode conductive column 17 and the anode conductive column 14 are V-shaped, and the positioning groove 19 is a V-shaped groove, which can achieve the function of stable support for the support plate 1 3 and the support plate 2 4, reduce shaking, improve the stability of the drum 2 during operation, and further improve the uniformity and safety of electroplating.

[0033] Furthermore, the outer diameter of driven gear 2 9 is larger than that of driven gear 1 8, which reduces speed and increases the transmission torque, ensuring that there is a sufficiently large torque to drive the roller 2 to rotate, ensuring the smooth rotation of the roller 2, and ensuring the electroplating effect on the parts to be plated.

[0034] Furthermore, the rotating shaft 2 6 is arranged on one of the driven gears 2 9, and the driven gear 2 9 is provided with a through hole and a radial hole corresponding to the conductive rod 10. The part of the conductive rod 10 passing through the through hole is called a conductive end. The conductive end is laid in the radial hole and is laid in the axial arc groove of the rotating shaft 2 6 after being bent. The arc groove plays a positioning role for the conductive end and makes the side wall of the conductive end at least partially exposed, so that the conductive end is electrically connected to the first conductive bearing 12 or the second conductive bearing 15. The overall structure is compact, occupies little space, reduces the situation of flying wires, and ensures the normal rotation of the drum 2.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electroplating barrel plating device, comprising an electroplating tank (1) and a roller (2) located in the electroplating tank (1), characterized in that: One end of the roller (2) is rotatably mounted on the support plate one (3) via the rotation shaft one (5), and the other end is rotatably mounted on the support plate two (4) via the rotation shaft two (6). The roller (2) is provided with a snap-fitting opening (23), and the opening (23) is used to take in and place the parts to be plated. The side wall of the roller (2) is provided with a plurality of through holes. A plurality of conductive rods (10) are evenly arranged on the inner wall of the roller (2) in a circumferential direction, and each of the conductive rods (10) is provided with a plurality of conductive heads (11) at intervals, and the conductive heads (11) extend approximately in a radial direction. The conductive rods (10) extend along the length direction of the roller (2), and one end of the conductive rods (10) extends to the rotation shaft two (6) to form a conductive end head. The second support plate (4) is provided with a second conductive bearing bush (15) corresponding to the conductive end. The second conductive bearing bush (15) is located below the second rotating shaft (6) and is electrically connected to the negative pole 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 pole of the power supply.

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

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

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

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

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

9. The electroplating barrel plating equipment according to claim 8, characterized in that: The circulation pipe (1) comprises an inner pipe (20) and a transfer pipe (24). The inner pipe (20) is mounted on the rotating shaft (5). One end of the inner pipe (20) extends into the drum (2), and the other end is provided with a truncated cone connection port. The transfer pipe (24) is provided with a corresponding umbrella-shaped connection port, and the umbrella-shaped connection port is used for docking with the truncated cone 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.

10. The electroplating barrel plating equipment according to any one of claims 2 to 4, characterized in that: The support plate 1 (3) is provided with a support column (18), the support plate 2 (4) is provided with a cathode conductive column (17) and an anode conductive column (14) which play both a supporting role and a conductive role, the roller (2) is mounted on the electroplating tank (1) via the support column (18), the cathode conductive column (17) and the anode conductive column (14), and corresponding positioning grooves (19) are provided at positions on the electroplating tank (1) which match the support column (18), the cathode conductive column (17) and the anode conductive column (14).

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