A rotating hanging plating tool for chemical nickel plating layer

Abstract

The utility model belongs to the field of surface treatment, and disclose a kind of rotary hanging plating tool for chemical nickel plating, including crown block hook support, feeding and discharging transplanting car and big workpiece rotary clamp, driving motor is arranged on crown block hook support, transmission is arranged in cooperation with driving motor below crown block hook support, fixed product hanger is arranged in transmission one side, all be provided with angle fixed block on the four corners of big workpiece rotary clamp, the center of big workpiece rotary clamp is provided with gravity balance piece, the utility model structure design is compact and reasonable, workpiece can be individually hung and make it rotate, workpiece will not produce mutual friction, impact and other problems in nickel plating process, workpiece can rotate in plating bath and agitate bath liquid, can make bath liquid mixing more uniform to ensure that the plating thickness of different positions of workpiece is uniform, this tool has fused the advantages of traditional barrel plating and hanging plating, greatly improves production efficiency and product quality.

Description

Technical Field

[0001] This utility model relates to the field of surface treatment, specifically a rotary rack plating fixture for electroless nickel plating. Background Technology

[0002] In the electroless nickel plating process, to ensure the uniformity of nickel plating on the surface of the workpiece, the existing technologies for nickel plating on non-linear workpieces mainly include two types of processes: rack plating and barrel plating.

[0003] Rack plating possesses unique properties, primarily suitable for nickel plating of large workpieces and single-batch parts with specific surface requirements. Its key advantage lies in the flexible and precise adjustment of plating thickness to meet diverse production standards. However, rack plating also inevitably has significant drawbacks. In actual production, its efficiency is relatively low, especially in large-scale production scenarios, where this limitation severely restricts capacity expansion. Due to its low efficiency, rack plating requires significantly more time and resources to produce the same quantity of products compared to more efficient processes, resulting in higher overall production costs and severely impacting a company's market competitiveness and economic benefits.

[0004] Barrel plating is primarily designed for mass production of small workpieces. Traditional barrel plating involves rotating a driven drum, which in turn causes the workpieces inside to tumble and polish. During this process, parts inevitably accumulate inside the drum. Parts in the inner layers are easily shielded by the outer layers, hindering their participation in the electrochemical reaction. To effectively address this issue, the continuous rotation of the drum causes the inner and outer layers to alternate positions, creating a more uniform plating opportunity for each part. However, barrel plating also has several insurmountable drawbacks. First, this process is only suitable for mass production of small, lightweight parts. For large workpieces, the significant weight not only exerts a strong impact on the drum but also easily damages them during polishing, affecting product quality. Second, the frequent collisions and friction between parts during drum rotation can leave scratches on the product surface and even cause deformation, severely impacting product quality and performance. Third, barrel plating is simply not suitable for heavy, large workpieces. When large workpieces are stacked for barrel plating, the problem of impact will become more serious, and it will also cause great damage to the barrel plating basket, significantly shortening the service life of the barrel plating basket and further increasing production costs.

[0005] When actual production demands barrel plating of large products and batches of parts, neither rack plating nor barrel plating alone can meet the production requirements. The low efficiency of rack plating makes it difficult to keep up with the pace of large-scale production, while barrel plating, due to its inherent limitations, is unsuitable for effectively handling large workpieces. Therefore, the batch barrel plating of large workpieces has become a pressing technical challenge in the surface treatment industry, requiring the development of innovative processes and equipment to solve this dilemma. Utility Model Content

[0006] Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides a rotary rack plating fixture for electroless nickel plating, which solves the problems mentioned in the background art, such as high production costs of traditional rack plating and the inability of barrel plating to handle large workpieces.

[0008] (II) Technical Solution

[0009] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a rotary rack plating fixture for electroless nickel plating, comprising a crane hook support, a loading / unloading transfer trolley, and a large workpiece rotary fixture. The crane hook support is equipped with a drive motor, and a transmission device cooperating with the drive motor is provided below the crane hook support. A product fixing hanger is provided on one side of the transmission device. The loading / unloading transfer trolley is equipped with four sets of positioning V-seats, and the crane hook support is fixed on the loading / unloading transfer trolley through the four sets of positioning V-seats.

[0010] Preferably, the overhead crane hook support includes a crossbeam and four sets of hooks. The crossbeam is composed of multiple sets of support rods arranged in a crisscross pattern. Four sets of hooks are provided on the crossbeam, and four sets of conductive bars are provided on both sides of the crossbeam.

[0011] Preferably, a drive motor is fixedly installed in the middle of the cross frame, and a moving sprocket is coaxially connected to the output end of the drive motor.

[0012] Preferably, the transmission device includes a structural frame, a transmission chain, a rotating shaft, a rotating disk, and a driven sprocket. The structural frame is fixedly connected below the cross frame. The driven sprocket and the rotating shaft are installed inside the structural frame. The driven sprocket is connected to the structural frame bearing through the rotating shaft. The driven sprocket and the driven sprocket are fitted with a transmission chain. The driven sprocket and the driven sprocket are connected by a transmission chain. The rotating shaft is coaxially connected to the rotating disk on the side opposite to the driven sprocket.

[0013] Preferably, the fixed product hanger includes a tray frame and multiple sets of fixing rods. The tray frame is coaxially connected to the rotating disk. Multiple sets of crisscrossing fixing rods are provided on the side of the tray frame away from the rotating disk, and multiple sets of fixing through slots are provided on the fixing rods.

[0014] Preferably, the large workpiece rotating fixture is provided with corner fixing blocks at all four corners, and a center-of-gravity balancing component is provided at the center of the large workpiece rotating fixture. Multiple sets of fixing holes are provided on both the corner fixing blocks and the center-of-gravity balancing component.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a rotary rack plating fixture for electroless nickel plating, which has the following advantages:

[0017] 1. This electroless nickel plating rotary rack plating fixture is equipped with a crane hook support, product fixing fixture, transmission device, large workpiece rotating clamp, and loading / unloading transfer trolley. It can suspend and rotate workpieces individually, preventing mutual friction and impact during nickel plating. The workpieces can rotate and agitate the plating solution, ensuring more uniform mixing and consistent plating thickness at different locations on the workpiece. This fixture combines the advantages of traditional barrel plating and rack plating. Combined with the loading / unloading transfer trolley, it not only facilitates fixture movement but also makes loading / unloading operations efficient and convenient, greatly improving production efficiency and product quality.

[0018] 2. Equipped with a transmission device and a product fixing fixture, the workpiece can be suspended and fixed on the fixture, which can prevent the workpieces from contacting each other and affecting the nickel plating. The transmission device can drive the fixture and the workpiece to rotate, which can agitate the plating solution, making the plating thickness more uniform and improving the plating quality.

[0019] 3. It is equipped with a large workpiece rotation fixture, which can assist in clamping and fixing large-volume and heavy workpieces. The center of gravity balance component can balance the center of gravity, which can prevent the center of gravity of irregular workpieces from being off the rotation axis, and can greatly improve the service life of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overhead crane hook bracket, transmission device, and product fixing fixture structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the large workpiece rotating fixture of this utility model.

[0023] In the diagram: 1. Overhead crane hook bracket; 2. Drive motor; 3. Transmission device; 4. Product fixing fixture; 5. Conductive busbar; 6. Positioning V-seat; 7. Loading / unloading transfer trolley; 8. Horizontal frame; 9. Hook; 10. Structural frame; 11. Transmission chain; 12. Rotating shaft; 13. Rotary disc; 14. Disc frame; 15. Fixing rod; 16. Fixing through slot; 17. Large workpiece rotating fixture; 18. Angle fixing block; 19. Center of gravity balancing component. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-3 This utility model provides a technical solution:

[0026] A rotary rack plating fixture for electroless nickel plating includes a crane hook support 1, a loading / unloading transfer trolley 7, and a large workpiece rotary fixture 17. A drive motor 2 is mounted on the crane hook support 1, and a transmission device 3 cooperating with the drive motor 2 is located below the crane hook support 1. A product fixing bracket 4 is located on one side of the transmission device 3. Four sets of positioning V-seats 6 are mounted on the loading / unloading transfer trolley 7. The crane hook support 1 is fixed to the loading / unloading transfer trolley 7 by the four sets of positioning V-seats 6. The positions of the four sets of positioning V-seats 6 are based on the conductive bars 5 on both sides of the crane hook support 1. When the device needs to be moved, the four sets of conductive bars 5 of the crane hook support 1 are aligned with the positioning V-seats 6 and engaged. The device can be easily pushed using the casters below the loading / unloading transfer trolley 7, facilitating loading and unloading operations.

[0027] Furthermore, the overhead crane hook support 1 includes a crossbeam 8 and four sets of hooks 9. The crossbeam 8 is composed of multiple sets of support rods arranged in a crisscross pattern. Four sets of hooks 9 are installed on the crossbeam 8, and four sets of conductive bars 5 are installed on both sides of the crossbeam 8. The hooks 9 are used for the suspension device, and the conductive bars 5 are used for conducting and transferring electrons to maintain the electrical neutrality of the workpiece surface and avoid local charge accumulation that hinders the chemical deposition of the coating.

[0028] Furthermore, a drive motor 2 is fixedly installed in the middle of the crossbeam 8, and a moving sprocket is coaxially connected to the output end of the drive motor 2. The drive motor 2 provides power to drive the workpiece to rotate.

[0029] Furthermore, the transmission device 3 includes a structural frame 10, a transmission chain 11, a rotating shaft 12, a rotating disk 13, and a driven sprocket. The structural frame 10 is fixedly connected to the lower part of the cross frame 8. The driven sprocket and the rotating shaft 12 are installed inside the structural frame 10. The driven sprocket is connected to the structural frame 10 bearing through the rotating shaft 12. The transmission chain 11 is fitted on the driven sprocket and the driven sprocket, and the driven sprocket and the driven sprocket are connected by transmission chain 11. The rotating shaft 12 is coaxially connected to the rotating disk 13 on the side opposite to the driven sprocket. The rotation of the driven sprocket is transmitted through the transmission chain 11, which can drive the rotating shaft 12 and the rotating disk 13 to rotate. The rotating disk 13 is coaxially connected to the fixed product hanger 4, which can drive the workpiece fixed on the fixed product hanger 4 to rotate together.

[0030] Furthermore, the fixed product hanger 4 includes a tray frame 14 and multiple sets of fixing rods 15. The tray frame 14 is coaxially connected to the rotating disk 13. Multiple sets of crisscrossing fixing rods 15 are provided on the side of the tray frame 14 away from the rotating disk 13, and multiple sets of fixing slots 16 are formed on the fixing rods 15. The workpiece to be nickel plated is fixed to the fixed product hanger 4 by bolts and fixing slots 16. Then, the tray frame 14 is coaxially connected and fixed to the rotating disk 13. The rotation of the rotating disk 13 can drive the workpiece to rotate, and the rotation of the workpiece can agitate the plating solution, which can make the plating solution more uniform and the plating layer thickness on the workpiece surface uniform and of good quality.

[0031] Furthermore, the large workpiece rotating fixture 17 is equipped with corner fixing blocks 18 at each of its four corners, and a center-of-gravity balancing component 19 is located at the center of the large workpiece rotating fixture 17. Multiple sets of fixing holes are provided on both the corner fixing blocks 18 and the center-of-gravity balancing component 19. If nickel plating is required on large-volume, high-mass workpieces, the large workpiece rotating fixture 17 can be used to assist in clamping and fixing them. The workpiece is fixed between the fixed product hanger 4 and the large workpiece rotating fixture 17, and bolts are used to pass through the fixing holes and fixing slots 16 to firmly fix the workpiece. The center-of-gravity balancing component 19 is used for auxiliary counterweight. For some large-volume, irregularly shaped workpieces whose center of gravity is not at the center of their dimensions, the center-of-gravity balancing component 19 increases gravity to adjust the center of gravity, making the center of gravity of the fixed product hanger 4, the large workpiece rotating fixture 17, and the assembled workpiece as close as possible to the axis of rotation 12. This prevents excessive deviation of the center of gravity from the rotation axis, which could cause centrifugal force during rotation and damage the device, thus significantly improving the device's service life.

[0032] Structural Description:

[0033] Overhead crane hook bracket 1: The load-bearing and power connection structure of the tooling, consisting of a cross frame 8 and four sets of hooks 9, is used for suspension devices. The conductive bars 5 on both sides conduct electrons, and the drive motor 2 is installed in the middle to provide power to the tooling.

[0034] Drive motor 2: The power source of the tooling, installed in the middle of the crossbeam 8 of the overhead crane hook bracket 1, with the output end coaxially connected to the drive sprocket to provide power for the rotation of the workpiece;

[0035] Transmission device 3: power transmission structure, including structural frame 10, transmission chain 11, rotating shaft 12, rotating disk 13 and driven sprocket, which transmits the power of drive motor 2 to fixed product hanger 4, driving the workpiece to rotate;

[0036] Product fixing fixture 4: a structure for fixing workpieces, consisting of a disc frame 14 and multiple sets of fixing rods 15. The disc frame 14 is coaxially connected to the rotating disc 13. The fixing through grooves 16 on the fixing rods 15 are used with bolts to fix the workpieces, so that the workpieces rotate with the rotating disc 13.

[0037] Conductive busbar 5: Installed on both sides of the crossbar 8 of the overhead crane hook bracket 1, it is used to conduct and transfer electrons, maintain the electrical neutrality of the workpiece surface, and ensure the smooth chemical deposition of the coating.

[0038] Positioning V-seat 6: Installed on the loading and unloading transfer vehicle 7, it cooperates with the conductive strips 5 on both sides of the overhead crane hook bracket 1 to fix the overhead crane hook bracket 1, facilitating the movement of the device and loading and unloading of materials;

[0039] Loading and unloading transfer vehicle 7: a structure for moving tooling, equipped with casters at the bottom, and connected to the overhead crane hook bracket 1 via positioning V-seat 6, facilitating loading and unloading operations;

[0040] Horizontal frame 8: The main frame of the crane hook bracket 1 is composed of multiple sets of horizontal and vertical support rods, which have good stability and load-bearing capacity. It is used to install components such as hook 9, conductive busbar 5 and drive motor 2.

[0041] Hook 9: Installed on the crossbar 8 of the crane hook bracket 1, used for suspension device;

[0042] Structural frame 10: The support structure of the transmission device 3, fixed below the cross frame 8, is used to install the driven sprocket and the rotating shaft 12, and provides stable support for the transmission device;

[0043] Drive chain 11: connects the driving sprocket and the driven sprocket, transmits power, and causes the driven sprocket to rotate with the driving sprocket, thereby driving the rotating shaft 12 and the rotating disk 13 to rotate;

[0044] Rotating shaft 12: A rotating component in the transmission device 3, one end of which is connected to the driven sprocket, and the other end is coaxially connected to the rotating disk 13. It rotates under the drive of the transmission chain 11, which in turn drives the rotating disk 13 and the workpiece to rotate.

[0045] Rotary disk 13: It is coaxially connected to the disk frame 14 of the fixed product hanger 4, and rotates under the drive of the rotating shaft 12, thereby driving the fixed product hanger 4 and the workpiece to rotate;

[0046] Disc frame 14: The main component for fixing the product hanger 4, coaxially connected with the rotating disc 13, used to install the fixing rod 15, so that the fixing rod 15 rotates synchronously with the rotating disc 13;

[0047] Fixed rod 15: A component on the product hanger 4 used to fix the workpiece. It is distributed in a crisscross pattern on the side of the tray frame 14 away from the rotating disk 13, and multiple sets of fixing through slots 16 are opened on it.

[0048] Fixed through groove 16: It is formed on the fixed rod 15 and is used with bolts to fix the workpiece to be nickel plated;

[0049] Large workpiece rotating fixture 17: A structure that helps to fix large volume and heavy workpieces. It has corner fixing blocks 18 at the four corners and a center balance component 19 at the center. It fixes the workpiece by cooperating with the product fixing fixture 4 through fixing holes.

[0050] Corner fixing block 18: It is set at the four corners of the large workpiece rotating clamp 17, and has fixing holes on it. It is used to fix the large workpiece between the large workpiece rotating clamp 17 and the fixed product hanger 4 with bolts.

[0051] Center of gravity balancing component 19: Located at the center of the large workpiece rotating fixture 17, it has a fixing hole on it to assist in counterweighting, adjust the center of gravity of large and irregularly shaped workpieces, and prevent damage to the device due to center of gravity shift during rotation.

[0052] Working Principle: This fixture mainly consists of a crane hook support 1, a loading / unloading transfer trolley 7, and a large workpiece rotating clamp 17. A transmission device 3 is located below the crane hook support 1, and a product fixing bracket 4 is equipped on one side. The design of the loading / unloading transfer trolley 7 greatly improves the ease of movement of the device. Four sets of positioning V-seats 6 on it cooperate with the conductive bars 5 on both sides of the crane hook support 1. When the device needs to be moved, simply align the four sets of conductive bars 5 of the crane hook support 1 with the positioning V-seats 6 and insert them. With the help of the casters below the loading / unloading transfer trolley 7, the device can be easily pushed, thus facilitating loading and unloading operations. The crane hook support 1 includes a crossbeam 8 and four sets of hooks 9. The crossbeam 8 is composed of multiple sets of support rods arranged in a crisscross pattern, providing good stability and load-bearing capacity. The four sets of hooks 9 on the crossbeam 8 are used to suspend the device, while the four sets of conductive bars 5 on both sides of the crossbeam 8 undertake the important task of conducting and transferring electrons. During the electroless nickel plating process, the conductive busbar 5 maintains the electrical neutrality of the workpiece surface, preventing localized charge accumulation and ensuring the smooth chemical deposition of the plating layer. The drive motor 2, fixedly mounted in the middle of the crossbeam 8, is the power source for the entire fixture. Its output end is coaxially connected to a moving sprocket, providing power for subsequent transmission. The transmission device 3 consists of a structural frame 10, a transmission chain 11, a rotating shaft 12, a rotating disk 13, and a driven sprocket. The structural frame 10, fixedly connected below the crossbeam 8, provides stable support for the entire transmission device 3. When the drive motor 2 starts, the moving sprocket rotates, transmitting power to the driven sprocket via the transmission chain 11 fitted onto both the moving and driven sprockets. The driven sprocket is connected to the structural frame 10 bearing via the rotating shaft 12. The rotation of the moving sprocket, transmitted through the transmission chain 11, drives the rotating shaft 12 and the coaxially connected rotating disk 13 to rotate. The rotating disk 13 is coaxially connected to the fixed product hanger 4, thus the rotation of the rotating disk 13 drives the workpiece fixed on the fixed product hanger 4 to rotate as well. The fixed product hanger 4 consists of a tray frame 14 and multiple sets of fixing rods 15. The tray frame 14 is coaxially connected to the rotating disk 13 to ensure that both can rotate synchronously. Multiple sets of crisscrossing fixing rods 15 are provided on the side of the tray frame 14 facing away from the rotating disk 13, and multiple sets of fixing slots 16 are formed on the fixing rods 15. The workpiece to be nickel-plated is firmly fixed to the fixed product hanger 4 by bolts and the fixing slots 16. When the rotating disk 13 rotates, it drives the fixed product hanger 4 and the workpiece to rotate together. The rotation of the workpiece agitates the plating solution in the plating tank, making the solution more uniform. In the electroless nickel plating process, a uniform plating solution ensures that the plating thickness is uniform at all locations on the workpiece surface, thereby improving the quality of the plating layer. For large-volume, high-weight workpieces, the fixture is equipped with a large workpiece rotating clamp 17. The large workpiece rotating fixture 17 has corner fixing blocks 18 at each of its four corners and a center balance component 19 at its center. Multiple sets of fixing holes are provided on both the corner fixing blocks 18 and the center balance component 19.When nickel plating large workpieces is required, the workpiece is fixed between the fixed product hanger 4 and the large workpiece rotating fixture 17. Bolts are used to pass through the fixing holes and fixing through slots 16 to firmly fix the workpiece. For some large, irregularly shaped workpieces, the center of gravity may not be at the center of the dimension. The function of the center of gravity balance component 19 is to assist in counterweighting, adjusting the center of gravity by increasing gravity, so that the center of gravity of the fixed product hanger 4, the large workpiece rotating fixture 17, and the assembled workpiece is as close as possible to the axis of the rotating shaft 12. This prevents the center of gravity from excessively deviating from the rotating axis, avoiding centrifugal force during rotation that could damage the device, thus significantly improving the service life of the device. In summary, this rotary rack plating fixture for electroless nickel plating provides power and conductivity through the overhead crane hook bracket 1, the transmission device 3 realizes power transmission and workpiece rotation, the fixed product hanger 4 fixes the workpiece and rotates it to ensure uniform plating, and the large workpiece rotating fixture 17 provides special fixation and center of gravity adjustment for large workpieces. All components work closely together to complete the high-quality production of electroless nickel plating, while improving production efficiency and the service life of the device.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary plating fixture for electroless nickel plating, characterized in that: The system includes a crane hook bracket (1), a loading and unloading transfer vehicle (7), and a large workpiece rotating fixture (17). The crane hook bracket (1) is equipped with a drive motor (2), and a transmission device (3) that cooperates with the drive motor (2) is provided below the crane hook bracket (1). A product fixing fixture (4) is provided on one side of the transmission device (3). The loading and unloading transfer vehicle (7) is equipped with four sets of positioning V seats (6). The crane hook bracket (1) is fixed on the loading and unloading transfer vehicle (7) by the four sets of positioning V seats (6).

2. The rotary plating fixture for electroless nickel plating according to claim 1, characterized in that: The overhead crane hook support (1) includes a cross frame (8) and four sets of hooks (9). The cross frame (8) is composed of multiple sets of support rods arranged in a crisscross pattern. Four sets of hooks (9) are provided on the cross frame (8), and four sets of conductive bars (5) are provided on both sides of the cross frame (8).

3. The rotary plating fixture for electroless nickel plating according to claim 2, characterized in that: A drive motor (2) is fixedly installed in the middle of the cross frame (8), and a drive sprocket is coaxially connected to the output end of the drive motor (2).

4. The rotary plating fixture for electroless nickel plating according to claim 3, characterized in that: The transmission device (3) includes a structural frame (10), a transmission chain (11), a rotating shaft (12), a rotating disk (13), and a driven sprocket. The structural frame (10) is fixedly connected below the cross frame (8). The driven sprocket and the rotating shaft (12) are provided inside the structural frame (10). The driven sprocket is connected to the bearing of the structural frame (10) through the rotating shaft (12). The transmission chain (11) is sleeved on the driven sprocket and the driven sprocket. The driven sprocket and the driven sprocket are connected by transmission through the transmission chain (11). The rotating shaft (12) is coaxially connected to the rotating disk (13) on the side away from the driven sprocket.

5. The rotary plating fixture for electroless nickel plating according to claim 4, characterized in that: The fixed product hanger (4) includes a tray frame (14) and multiple sets of fixing rods (15). The tray frame (14) is coaxially connected to the rotating disk (13). Multiple sets of horizontal and vertically intersecting fixing rods (15) are provided on the side of the tray frame (14) away from the rotating disk (13). Multiple sets of fixing through slots (16) are opened on the fixing rods (15).

6. The rotary plating fixture for electroless nickel plating according to claim 5, characterized in that: The large workpiece rotating fixture (17) is provided with corner fixing blocks (18) at each of its four corners, and a center balance component (19) is provided at the center of the large workpiece rotating fixture (17). Multiple sets of fixing holes are provided on the corner fixing blocks (18) and the center balance component (19).

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