A chemical nickel plating equipment for aluminum parts

Abstract

This utility model discloses an aluminum parts electroless nickel plating equipment, specifically relating to the technical field of nickel plating equipment. It includes a nickel plating tank, inside which is a heating element for heating the nickel plating solution. The heating element is protected against uneven heat distribution by a flow-deflecting element. The flow-deflecting element comprises two spiral arrays disposed within the nickel plating tank, and the spiral arrays are movably connected to the nickel plating tank via rotating shafts. Two linkage shafts are located at the front end of the nickel plating tank, and the rear ends of the linkage shafts penetrate the nickel plating tank and are fixed to the rotating shafts on the spiral arrays. This utility model uses a servo motor to drive two meshing gears to rotate. The gears drive the spiral arrays to rotate via the linkage shafts, causing the plating solution to flow axially. The meshing of the two gears causes the two spiral arrays to rotate in opposite directions, forming a V-shaped vortex flow field within the nickel plating tank. This prevents localized stagnation of the nickel plating solution, ensuring sufficient diffusion and uniform heat distribution.

Description

Technical Field

[0001] This utility model relates to the field of nickel plating equipment technology, and more specifically to an aluminum part electroless nickel plating equipment. Background Technology

[0002] Aluminum and aluminum alloys are widely used in aerospace, automotive manufacturing, electronic equipment, and mechanical parts due to their lightweight, corrosion resistance, and good electrical and thermal conductivity. Electroplated nickel layers exhibit high stability in air. Because metallic nickel has strong passivation capabilities, a very thin passivation film can quickly form on the surface, resisting corrosion from the atmosphere, alkalis, and certain acids. Therefore, nickel plating is commonly performed on the exterior of aluminum parts.

[0003] As shown in the prior art published in CN215560660U, this prior art involves adding water to a heating sleeve, inserting a heating wire into the sleeve, threading a threaded block onto the sleeve to fix the heating wire inside, placing the sleeve in a basket, and attaching a hook to a hanging ring. The operator then pours plating solution into the tank, and the heating wire generates heat, first heating the water, which then conducts the heat to the plating solution. Because water is used as the heat transfer medium during heating, direct contact between the heating wire and the plating solution is avoided, effectively preventing localized overheating. However, in this prior art, continuous heating of the water leads to water loss, which affects the performance of the heating wire. Furthermore, the static state of the nickel plating solution affects heat distribution, thus impacting the nickel plating effect of the product. Utility Model Content

[0004] To overcome the aforementioned deficiencies of the prior art, this utility model provides an aluminum electroless nickel plating equipment. A servo motor drives two meshing gears to rotate. The gears drive a spiral array to rotate via a linkage shaft, causing the plating solution to flow axially. The meshing of the two gears causes the two spiral arrays to rotate in opposite directions, forming an 8-shaped vortex flow field in the nickel plating tank. This prevents local stagnation of the nickel plating solution, allows the nickel plating solution to diffuse fully, and ensures uniform heat distribution, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an aluminum part electroless nickel plating equipment, including a nickel plating tank, wherein the nickel plating tank is provided with a heating element for heating the nickel plating solution, and the heating element is prevented from uneven heat distribution by a turbulence-dispersing element;

[0006] The turbulence-disrupting component includes two spiral rows disposed in the nickel plating tank, and the spiral rows are movably connected to the nickel plating tank via rotating shafts. The front end of the nickel plating tank is provided with two linkage shafts, the rear end of which passes through the nickel plating tank and is fixed together with the rotating shaft on the spiral rows. Gears are installed at the front ends of the two linkage shafts, and the two gears mesh with each other.

[0007] In a preferred embodiment, the heating element is installed on a mounting bracket at the bottom of the nickel plating tank. A water tank is provided on the top of the mounting bracket. A water inlet pipe is fixedly connected to one side of the water tank. A water pump and a T-pipe connected to the water pump are installed on the top of the water tank. Branch pipes are fixedly connected to both sides of the top of the T-pipe. Both ends of the branch pipe extend into the nickel plating tank. A heat-conducting cylinder is fixedly connected to the end of the branch pipe near the nickel plating tank. A solenoid valve is installed on the outside of the end of the branch pipe near the heat-conducting cylinder.

[0008] The bottom end of the heat-conducting cylinder is fixed to the bottom of the inner cavity of the nickel plating tank. The heat-conducting cylinder is equipped with a heating wire, and the heating wire is movably connected to the inner wall of the top of the heat-conducting cylinder through an installation ring.

[0009] In a preferred embodiment, a flow divider with an L-shaped cross-section is fixedly connected to one side of the bottom end of the heat-conducting cylinder. A float is provided inside the top end of the flow divider, and a support is installed at the top end of the float. The top end of the support penetrates the flow divider and extends to the outside of the top end of the flow divider, and a marker ball is installed at the top end of the support.

[0010] In a preferred embodiment, a warning shell is installed at the top of the diversion pipe, and the warning shell is fitted over the outside of the support column.

[0011] In a preferred embodiment, a fixed bracket sleeved on the outside of two gears is installed on the front side of the nickel plating tank, and a servo motor is installed on the front side of the fixed bracket. The output shaft of the servo motor passes through the fixed bracket and is fixed together with the front end of one of the linkage shafts.

[0012] In a preferred embodiment, the diameter of the float is equal to the inner diameter of the diversion pipe, and the diameter of the float is greater than the diameter of the support column.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. The servo motor drives two meshing gears to rotate. The gears drive the spiral array to rotate through the linkage shaft, causing the plating solution to flow axially. The meshing of the two gears causes the two spiral arrays to rotate in opposite directions, forming an 8-shaped vortex flow field in the nickel plating tank. This prevents the nickel plating solution from stagnating locally and allows the nickel plating solution to diffuse fully, ensuring uniform heat distribution.

[0015] 2. By connecting the diversion pipe to the feed cylinder, the water level in the diversion pipe is made to match the water level in the feed cylinder. This makes it easy to monitor the water volume in the feed cylinder through the diversion pipe. When the water volume decreases, the float moves the indicator ball to contact the warning shell, indicating that the water level in the feed cylinder has reached the warning level. The staff needs to start the water pump to replenish the water. This allows for a direct understanding of the water volume and timely replenishment of the feed cylinder. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a side sectional view of the nickel plating tank of this utility model;

[0018] Figure 3 This is a top view of the spiral arrangement of this utility model;

[0019] Figure 4 This is a side sectional view of the heat-conducting cylinder of this utility model;

[0020] Figure 5 This is the front view of the water tank of this utility model.

[0021] The attached diagram is labeled as follows: 1. Nickel plating tank; 2. Spiral bar; 3. Linkage shaft; 4. Gear; 5. Mounting bracket; 6. Water tank; 7. Inlet pipe; 8. Water pump; 9. T-joint; 10. Branch pipe; 11. Heat conduction cylinder; 12. Solenoid valve; 13. Heating wire; 14. Mounting ring; 15. Diverter pipe; 16. Float; 17. Support column; 18. Marking ball; 19. Warning shell; 20. Fixed bracket; 21. Servo motor. Detailed Implementation

[0022] 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.

[0023] Refer to the instruction manual appendix Figure 1-5 This utility model provides an aluminum electroless nickel plating equipment, including a nickel plating tank 1. The nickel plating tank 1 is equipped with a heating element for heating the nickel plating solution, and the heating element is prevented from uneven heat distribution by a flow-deflecting element. The heating element is installed on a mounting bracket 5 at the bottom of the nickel plating tank 1. A water tank 6 is provided on the top of the mounting bracket 5. A water inlet pipe 7 is fixedly connected to one side of the water tank 6. A water pump 8 and a three-way pipe 9 connected to the water pump 8 are installed on the top of the water tank 6. Branch pipes 10 are fixedly connected to both sides of the top of the three-way pipe 9. Both ends of the branch pipes 10 extend into the nickel plating tank 1, and a heat-conducting cylinder 11 is fixedly connected to the end of the branch pipe 10 near the nickel plating tank 1. A solenoid valve 12 is installed on the outside of the end of the branch pipe 10 near the heat-conducting cylinder 11. The bottom end of the heat-conducting cylinder 11 is fixed to the bottom of the inner cavity of the nickel plating tank 1. An electric heating wire 13 is provided inside the heat-conducting cylinder 11, and the outside of the electric heating wire 13 is movably connected to the inner wall of the top of the heat-conducting cylinder 11 through a mounting ring 14.

[0024] To facilitate heating of the nickel plating solution in the nickel plating tank 1, the operator starts the water pump 8 to transport water from the water tank 6 through the three-way pipe 9 and the branch pipe 10 to the interior of multiple heat-conducting cylinders 11. Then, the heating wire 13 is fixed inside the heat-conducting cylinder 11 by the threaded connection between the mounting ring 14 and the heat-conducting cylinder 11. The heating wire 13 heats the water, and at the same time, the heat-conducting cylinder 11 transfers heat to the nickel plating solution, thereby heating the nickel plating solution to a suitable temperature. Furthermore, by using water as a heat transfer medium, the direct contact between the heating wire 13 and the nickel plating solution can be avoided to prevent local overheating.

[0025] Among them, such as Figure 1 , 2 As shown in Figures 4 and 5, due to the continuous heating of water by the heating wire 13, water loss will occur. Therefore, it is necessary to detect the water level in the heat-conducting cylinder 11 and replenish the water in the heat-conducting cylinder 11 in a timely manner. Thus, an L-shaped diversion pipe 15 is fixedly connected to one side of the bottom of the heat-conducting cylinder 11. A float 16 is provided inside the top of the diversion pipe 15, and a support column 17 is installed at the top of the float 16. The top of the support column 17 penetrates the diversion pipe 15 and extends to the outside of the top of the diversion pipe 15. A marker ball 18 is installed at the top of the support column 17. Water in the feed cylinder flows into the diversion pipe 15, ensuring that the liquid level in the diversion pipe 15 is equal to the liquid level in the feed cylinder. The water levels are consistent, allowing the water in the diversion pipe 15 to lift the float 16 upwards. The float 16 then moves the indicator ball 18 upwards via the support column 17, visually indicating the water level in the feed cylinder. When the water level in the feed cylinder decreases, the water level in the diversion pipe 15 also decreases, causing the float 16 to move the indicator ball 18 downwards as the water level decreases. Meanwhile, since the diameter of the float 16 is equal to the inner diameter of the diversion pipe 15, and the diameter of the float 16 is greater than the diameter of the support column 17, the float 16 can limit the movement of the support column 17, thus preventing the support column 17 from separating from the diversion pipe 15 and ensuring the stability of the movement of the support column 17.

[0026] To enable staff to replenish water in a timely manner, a warning shell 19 is installed at the top of the diversion pipe 15. The warning shell 19 is fitted outside the support column 17. When the float 16 drives the marker ball 18 to contact the warning shell 19, it indicates that the water level in the feed cylinder has reached the warning level, and staff need to start the water pump 8 to replenish the water.

[0027] like Figure 2 and 3As shown, after the nickel plating solution is heated, in order to avoid uneven heat distribution, it is necessary to accelerate the flow of the nickel plating solution by means of a flow-deflecting component. The flow-deflecting component includes two spiral rows 2 disposed in the nickel plating tank 1, and the spiral rows 2 are movably connected to the nickel plating tank 1 through a rotating shaft. The front end of the nickel plating tank 1 is provided with two linkage shafts 3, and the rear end of the linkage shafts 3 passes through the nickel plating tank 1 and is fixed together with the rotating shaft on the spiral rows 2. The front end of each linkage shaft 3 is equipped with a gear 4, and the two gears 4 mesh with each other.

[0028] When using the aforementioned flow-deflecting components, a fixed bracket 20 is installed on the front side of the nickel plating tank 1, which is fitted around the two gears 4. A servo motor 21 is installed on the front side of the fixed bracket 20. The output shaft of the servo motor 21 passes through the fixed bracket 20 and is fixed to the front end of one of the linkage shafts 3. This allows the servo motor 21 to drive the two meshing gears 4 to rotate. The gears 4 then drive the spiral array 2 to rotate via the linkage shaft 3. The meshing of the two gears 4 causes the two spiral arrays 2 to rotate in opposite directions. One spiral array 2 pushes the nickel plating liquid to flow to the upper right, and the other pushes the nickel plating liquid to flow to the upper left, forming an 8-shaped vortex flow field in the nickel plating tank 1. This prevents the nickel plating liquid from stagnating locally and allows the nickel plating liquid to diffuse fully, ensuring uniform heat distribution.

[0029] Finally: 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 aluminum parts electroless nickel plating apparatus, comprising a nickel plating tank (1), characterized in that: The nickel plating tank (1) is equipped with a heating element for heating the nickel plating liquid, and the heating element is prevented from uneven heat distribution by a turbulence-dispersing element. The turbulence-disrupting component includes two spiral rows (2) disposed in the nickel plating tank (1), and the spiral rows (2) are movably connected to the nickel plating tank (1) via a rotating shaft. The front end of the nickel plating tank (1) is provided with two linkage shafts (3), the rear end of the linkage shafts (3) passes through the nickel plating tank (1) and is fixed together with the rotating shaft on the spiral rows (2). The front ends of the two linkage shafts (3) are each equipped with a gear (4), and the two gears (4) mesh with each other.

2. The aluminum parts electroless nickel plating equipment according to claim 1, characterized in that: The heating element is installed on the mounting bracket (5) at the bottom of the nickel plating tank (1). The mounting bracket (5) is equipped with a water tank (6) at the top. A water inlet pipe (7) is fixedly connected to one side of the water tank (6). A water pump (8) and a three-way pipe (9) connected to the water pump (8) are installed on the top of the water tank (6). Branch pipes (10) are fixedly connected to both sides of the top of the three-way pipe (9). Both ends of the branch pipe (10) extend into the nickel plating tank (1). A heat-conducting cylinder (11) is fixedly connected to one end of the branch pipe (10) near the nickel plating tank (1). A solenoid valve (12) is installed on the outside of one end of the branch pipe (10) near the heat-conducting cylinder (11). The bottom end of the heat-conducting cylinder (11) is fixed together with the bottom of the inner cavity of the nickel plating tank (1). The heat-conducting cylinder (11) is provided with a heating wire (13), and the heating wire (13) is movably connected to the inner wall of the top of the heat-conducting cylinder (11) through an installation ring (14).

3. The aluminum parts electroless nickel plating equipment according to claim 2, characterized in that: The bottom of the heat-conducting cylinder (11) is fixedly connected to a flow divider (15) with an L-shaped cross section. A float (16) is provided inside the top of the flow divider (15). A support column (17) is installed at the top of the float (16). The top of the support column (17) passes through the flow divider (15) and extends to the outside of the top of the flow divider (15). A marker ball (18) is installed at the top of the support column (17).

4. The aluminum parts electroless nickel plating equipment according to claim 3, characterized in that: The top of the diversion pipe (15) is equipped with a warning shell (19), which is fitted over the outside of the support column (17).

5. The aluminum parts electroless nickel plating equipment according to claim 1, characterized in that: The nickel plating tank (1) is equipped with a fixed bracket (20) sleeved on the outside of the two gears (4), and a servo motor (21) is installed on the front side of the fixed bracket (20). The output shaft of the servo motor (21) passes through the fixed bracket (20) and is fixed together with the front end of one of the linkage shafts (3).

6. The aluminum parts electroless nickel plating equipment according to claim 3, characterized in that: The diameter of the float (16) is equal to the inner diameter of the diversion pipe (15), and the diameter of the float (16) is greater than the diameter of the support (17).

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