Nickel wire mesh electroplating hanger and electroplating system

Abstract

The utility model relates to a kind of nickel wire mesh electroplating hangers, comprising: frame mechanism, it includes: multiple support, threaded rod and bearing seat, multiple support is sequentially connected by threaded rod head-to-tail, the support includes the first support body and the second support body of axis mutually perpendicular, the first threaded hole is passed through and opened in the first support body, the second support body is embedded with bearing seat, the first threaded hole and bearing seat are coaxially arranged and rotationally assembled with threaded rod between adjacent support;Locking mechanism, it includes: bottom plate and locking assembly, the locking assembly and bottom plate are used to clamp the electroplating net to be held;Hook.The utility model is through adjustable tensioning mechanism and multiple contact conductive structure design, the nickel wire mesh of different sizes is reduced hanger cost, improves plating uniformity, avoids the loosening of nickel wire mesh during electroplating process, displacement, ensures that nickel wire mesh and hanger always keep good contact.

Description

Technical Field

[0001] This utility model relates to the field of electroplating rack technology, and in particular to a nickel wire mesh electroplating rack. Background Technology

[0002] Nickel wire mesh, as a substrate material for electrocatalysis, is widely used in alkaline water electrolysis for hydrogen production electrodes; however, it suffers from a high overpotential in the hydrogen evolution reaction. To further enhance the hydrogen evolution reaction activity of the electrode material and reduce hydrogen production energy consumption, a common strategy is to prepare a more active catalytic coating on the nickel wire mesh surface. Currently, Raney nickel electrodes prepared by thermal spraying are the most common technical route for alkaline water electrolysis for hydrogen production electrodes, but they suffer from drawbacks such as low material utilization efficiency and poor adhesion of the catalytic coating, making it difficult to achieve the preparation of high-efficiency, low-energy-consumption, and high-stability electrode catalytic coatings. In recent years, the preparation of nickel alloys by electroplating has attracted widespread attention due to its advantages such as low cost, easy adjustment of alloy ratio, fine coating crystals, and strong adhesion to conductive substrates.

[0003] In the preparation of catalytic coatings for large-size electrodes, for alkaline water electrolysis hydrogen production electrodes, the uniformity and adhesion of the catalytic coating directly affect the energy consumption and long-term stability of the electrolyzer. In the prior art, the electroplating of nickel alloys on large-size nickel wire mesh often faces the following problems: (1) Poor coating uniformity: Traditional hangers have single contact points and cannot adapt to the fixation of large-size nickel wire mesh, resulting in uneven current distribution and large differences in coating thickness; (2) Poor compatibility with different electrode sizes: Traditional hangers cannot be extended and need to be customized according to the electrode size, which greatly increases the production cost of the hangers; (3) Low loading and unloading efficiency: Large-size nickel wire mesh is heavy, and existing hangers lack a quick disassembly and assembly structure, which affects production efficiency. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the existing hanger has a single contact point and cannot adapt to the fixing of large-size nickel wire mesh, thereby providing a nickel wire mesh electroplating hanger.

[0005] To solve the above-mentioned technical problems, this utility model provides a nickel wire mesh electroplating fixture, comprising:

[0006] A frame mechanism includes: multiple support members, threaded rods, and bearing seats. The multiple support members are connected end to end by the threaded rods. Each support member includes a first support body and a second support body with mutually perpendicular axes. The first support body has a first threaded hole through it, and the second support body is fitted with a bearing seat. The first threaded hole and the bearing seat of adjacent support members are coaxially arranged and rotatably assembled with threaded rods.

[0007] A locking mechanism includes a base plate and a locking assembly, the locking assembly and the base plate being used to clamp the mesh to be electroplated;

[0008] The hook has one end connected to the frame mechanism and the other end used to connect to the external support.

[0009] In one embodiment of this utility model, the threaded rod is fitted with a suitable handwheel, which is located on the outside of the support member.

[0010] In one embodiment of this utility model, the base plate is disposed on the inner side of the support member.

[0011] In one embodiment of this utility model, the locking assembly includes: a base, a handle, a linkage mechanism, and a pressure head. The base is disposed on a support member, the handle is hinged to the base, the pressure head is hinged to the base, and the end of the handle is driven to the pressure head through the linkage mechanism.

[0012] In one embodiment of this utility model, the pressure head includes: a connecting part, a threaded part, a nut part, an extension part, and a pressing part. The connecting part is hinged to the base and connected to the end of the linkage mechanism. The connecting part has a second threaded hole. The threaded part is adapted to the second threaded hole. The extension part is connected to the end of the threaded part. The pressing part is connected to the end of the extension part. The nut part is disposed on both sides of the pressing part and is adapted to the threaded part.

[0013] In one embodiment of this utility model, the crimping portion extends in a direction parallel to the axial direction of the threaded rod.

[0014] In one embodiment of this utility model, a locking mechanism is installed on the threaded rod.

[0015] In one embodiment of this utility model, the height of the hook end relative to the ground is greater than the height of the threaded rod end relative to the ground.

[0016] In one embodiment of this utility model, the frame mechanism, locking mechanism and hook are all made of conductive material, and the mesh to be electroplated can be electrically connected to the external support through the locking mechanism, frame mechanism and hook, and the number of hooks is at least two.

[0017] This utility model also discloses an electroplating system, including the aforementioned nickel wire mesh electroplating fixture.

[0018] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0019] This utility model discloses a nickel wire mesh electroplating fixture, which improves the uniformity of the plating layer through an adjustable tensioning mechanism and a multi-contact conductive structure design, preventing the nickel wire mesh from loosening or shifting during electroplating and preventing wrinkles. It ensures that the nickel wire mesh and the fixture maintain good contact at all times, effectively solving the problem of uneven electroplating caused by poor contact. Furthermore, when a support component or threaded rod is damaged, only the corresponding part needs to be replaced, avoiding the waste of scrapping the entire fixture. The telescopic frame design can accommodate electrodes of different sizes, improving versatility and greatly reducing the initial investment in the fixture. The modular loading and unloading structure shortens the single operation time, increases production efficiency, and is suitable for automated production lines. Attached Figure Description

[0020] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the structure of the hanging device of this utility model;

[0022] Figure 2 This is a schematic diagram of the locking mechanism of this utility model;

[0023] Figure 3 This is a structural schematic diagram of the hook and support component of this utility model;

[0024] Figure 4 This is a utility model Figure 1 Enlarged view of point A in the middle.

[0025] Explanation of reference numerals in the accompanying drawings: 1. Threaded rod; 2. Support member; 21. First support body; 22. Second support body; 23. Threaded hole; 3. Bearing; 4. Locking assembly; 41. Handle; 42. Linkage mechanism; 43. Connecting part; 44. Threaded part; 45. Nut part; 46. Extension part; 47. Crimping part; 5. Handwheel; 6. Base plate; 7. Hook. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0027] Example

[0028] Reference Figures 1-4 As shown, this utility model provides a nickel wire mesh electroplating fixture, comprising:

[0029] The frame mechanism includes: multiple support members 2, threaded rods 1, and bearing seats 3. The multiple support members 2 are connected end to end by the threaded rods 1. Each support member 2 includes a first support body 21 and a second support body 22 with mutually perpendicular axes. The first support body 21 has a first threaded hole 23 through it. The second support body 22 is fitted with bearing seats 3. The first threaded hole 23 and the bearing seats 3 are coaxially arranged between adjacent support members 2 and the threaded rods 1 are rotatably assembled thereon.

[0030] A locking mechanism, comprising: a base plate 6 and a locking component 4, wherein the locking component 4 and the base plate 6 are used to clamp the mesh to be electroplated;

[0031] Hook 7, one end of which is connected to the frame mechanism and the other end is used to connect to the external support.

[0032] The present invention discloses a nickel wire mesh electroplating fixture, the frame mechanism of which consists of multiple L-shaped support members 2, threaded rods 1, and bearing seats 3. The first support body 21 is perpendicular to the second support body 22. The second support body 22 is fitted with bearing seats 3, the inner ring of which is interference-fitted with the threaded rods 1, and the outer ring of which is transition-fitted with the support body. Adjacent support members 2 are connected by threaded rods 1: the first threaded hole 23 of the preceding support member 2 in a continuous loop is coaxial with the bearing seat 3 of the following support member 2, and the threaded rod 1 passes through the threaded hole 23 and is rotatably connected to the bearing seat 3. The locking mechanism includes a base plate 6, which is flat and fixed to the inner side of the support member 2, and works with the locking assembly 4 to press the nickel wire mesh; the hook 7 is a J-shaped rod, one end of which is welded to the top support member 2 of the frame, and the other end has a hook portion to connect to an external bracket.

[0033] When adjusting the frame size, rotating the threaded rod 1 causes the first threaded hole 23 to be threadedly connected to the threaded rod 1, and the bearing seat 3 allows the threaded rod 1 to rotate. Rotating the threaded rod 1 drives the adjacent support member 2 to move relative to each other along the axial direction. Adjusting the two sets of threaded rods 1 diagonally allows adjustment of the frame's length or width to accommodate the nickel wire mesh size. When placing the nickel wire mesh, its edge is pressed against the base plate 6 on the inner side of the support member 2; the nickel wire mesh is then fixed between the base plate 6 and the pressure head by pressing with the locking assembly 4. Finally, the frame is suspended from the external bracket using the hook 7 to complete the installation. The adjustable frame avoids the limitation of a single size adaptation, reducing the cost of universal mounting; the integrated design of the hook 7 simplifies the docking process and improves operational efficiency. In this embodiment, there are four threaded rods 1 and four support members 2. The four support members 2 are located at the four corners of the frame, and adjacent support members 2 are connected by threaded rods 1. The placement direction of the support members 2 is centrally symmetrical.

[0034] The threaded rod 1 is fitted with a matching handwheel 5, which is located on the outside of the support member 2. The handwheel 5 is disc-shaped with a through hole in the center that matches the threaded rod 1. Its inner wall has internal threads or a keyway, and it is fixed to the end of the threaded rod 1 via a threaded or keyed connection. The edge of the handwheel 5 has a knurled anti-slip texture, and its surface is plated with an anti-corrosion layer such as chromium. The handwheel 5 is located on the outside of the support member 2, i.e., on the side away from the inside of the frame, such as when the threaded rod 1 extends beyond the end of the preceding support member 2. When adjusting the frame, the operator holds the anti-slip texture of the handwheel 5 and rotates it clockwise or counterclockwise, causing the threaded rod 1 to rotate synchronously. Because the threaded rod 1 is threadedly connected to the preceding support member 2 and rotates in conjunction with the bearing 3 seat of the following support member 2, the rotation is converted into axial movement of the support member 2. The diameter of the handwheel 5 is much larger than that of the threaded rod 1; according to the lever principle, only a small force is required to drive it, reducing the operational intensity.

[0035] The base plate 6 is located inside the support member 2. The base plate 6 is a rectangular flat plate made of the same material as the support member 2, such as stainless steel. It is fixed to the inner surface of the support member 2 by welding. The surface roughness Ra of the base plate 6 is ≤0.8μm, and the edge radius R is ≥2mm to avoid scratching the nickel wire mesh. When placing the nickel wire mesh, its edges are in contact with the surface of the base plate 6. The base plate 6 serves as a support reference surface and forms a clamping pair with the pressure head of the locking assembly 4. When the pressure head is tightened, the base plate 6 provides a reverse support force, ensuring uniform stress on the nickel wire mesh. Because the base plate 6 is located inside, the contact area with the nickel wire mesh is maximized, preventing mesh deformation caused by localized stress. The inner location ensures effective contact between the base plate 6 and the nickel wire mesh, improving support stability; the low roughness and rounded corner design prevent scratches on the nickel wire mesh, ensuring surface quality; and the welding fixation ensures that the base plate 6 will not fall off in the electrolyte, ensuring structural reliability.

[0036] The locking assembly 4 includes a base, a handle 41, a linkage mechanism 42, and a pressure head. The base is mounted on the support member 2, the handle 41 is hinged to the base, and the pressure head is hinged to the base. The end of the handle 41 is driven to the pressure head via the linkage mechanism 42. The base is fixedly connected to the surface of the support member 2, on the same side as the base plate 6. The handle 41 is a long rod, with one end hinged to the base and the other end fitted with a rubber anti-slip sleeve. One end of the pressure head is hinged to the base, and the locking structure forms a horizontal clamp to provide locking force. When clamping, pulling the handle 41 downward causes it to rotate around the hinge point of the base. Through the linkage mechanism, the pressure head is driven to rotate downward around the hinge point of the base until it contacts the surface of the nickel wire mesh. At this time, the linkage mechanism 42 is in a dead position, and the pressed state can be maintained without continuous force. To release, pulling the handle 41 upward causes the pressure head to lift, completing the unlocking process.

[0037] The pressure head includes a connecting part 43, a threaded part 44, a nut part 45, an extension part 46, and a pressing part 47. The connecting part 43 is hinged to the base and connected to the end of the linkage mechanism 42. The connecting part 43 has a second threaded hole 23. The threaded part 44 is adapted to the second threaded hole 23. The extension part 46 is connected to the end of the threaded part 44. The pressing part 47 is connected to the end of the extension part 46. The nut part 45 is disposed on both sides of the pressing part 47 and is adapted to the threaded part 44. When adjusting the position of the pressing part 47, first loosen the two nuts, loosening the nut near the connecting part 43 and the nut near the extension part 46; rotate the threaded part 44: clockwise rotation moves the pressing part 47 away from the connecting part 43, adapting to the thick nickel wire mesh; counterclockwise rotation moves it closer, adapting to the thin nickel wire mesh. After adjustment, tighten the two nuts to lock the position of the threaded part 44. During pressing, the connecting part 43 drives the threaded part 44, the extension part 46 and the pressing part 47 to rotate synchronously, and the pressing part 47 presses the nickel wire mesh.

[0038] The crimping portion 47 extends along an axial direction parallel to the threaded rod 1. During crimping, the surface of the crimping portion 47 along the axial direction of the threaded rod 1 contacts the edge of the nickel wire mesh. Because the extension direction is consistent with the axial direction of the threaded rod 1, when the frame is adjusted in size via the threaded rod 1, the contact direction between the crimping portion 47 and the nickel wire mesh remains parallel to the edge of the nickel wire mesh, and the contact area does not decrease due to changes in the frame size. For example, if the threaded rod 1 is horizontal in axis direction, the horizontal edge of the nickel wire mesh is parallel to the threaded rod 1, and the crimping portion 47 extends horizontally, the contact area is the length of the crimping portion 47 multiplied by its width, ensuring uniform clamping force. The parallel extension design increases the contact area, reduces the clamping force per unit area, and prevents deformation of the nickel wire mesh.

[0039] A locking mechanism is installed on the threaded rod 1. The locking mechanism is fixed to the outer surface of the threaded rod 1, facing the inside of the frame. The base plate 6 has the same structure as the base plate 6 on the support member 2. The base, handle 41, linkage mechanism 42, and pressure head of the locking assembly 4 are exactly the same as those on the support member 2. The locking mechanisms on the threaded rod 1 are evenly distributed along the axial direction. For example, 1-8 locking mechanisms are installed on each threaded rod 1. When a large-sized nickel wire mesh is placed, its edge is attached to the inner base plate 6 of the support member 2, and its middle or other areas are attached to the base plate 6 on the threaded rod 1. Multi-point clamping is achieved by pressing the locking assembly 4 on the threaded rod 1. The locking mechanism on the support member 2 clamps the edge, and the locking mechanism on the threaded rod 1 clamps the middle, preventing the nickel wire mesh from sagging or deforming.

[0040] The height of the end of the hook 7 relative to the ground is greater than the height of the end of the threaded rod 1 relative to the ground. When suspended, the hook 7 hooks into the hanging hole of the external bracket. Because the end of the hook 7 is higher, after the frame is suspended, the threaded rod 1 and the nickel wire mesh are positioned lower than the hook 7 to avoid interference, and the bottom of the nickel wire mesh is higher than the ground.

[0041] The frame mechanism, locking mechanism, and hooks 7 are all made of (copper) conductive material. The mesh to be electroplated can be electrically connected to the external support through the locking mechanism, frame mechanism, and hooks 7. There are two hooks 7, and they are both configured as negative electrodes. During electroplating, the current path is: positive power supply → anode containing nickel plate → electroplating solution → nickel wire mesh → locking mechanism → frame and support → hooks → negative power supply, forming a closed loop. Because the entire fixture is conductive and has low contact resistance, the current is evenly transmitted to the entire surface of the nickel wire mesh, ensuring a uniform electroplating layer. The external non-conductive areas can be coated with an insulating layer, and the non-conductive areas are covered with an acid and alkali resistant insulating coating (such as PVC) to reduce stray current loss.

[0042] This embodiment also discloses an electroplating system, including the aforementioned nickel wire mesh electroplating rack. The system includes the rack, an external support (metal frame with hanging holes at the top), a DC power supply (output connected to the hanging holes of the support, with positive and negative terminals), an electrolyte tank (PP material, filled with nickel sulfate electrolyte), and a control device (controlling current, voltage, and time). Before electroplating, the rack frame is adjusted to fit the nickel wire mesh size, the nickel wire mesh is placed and pressed and locked; the rack hook 7 is hooked into the hanging holes of the support. During electroplating, the control device activates the power supply, and current flows through the support → hook 7 → rack → nickel wire mesh → electroplating solution → nickel plate to form a circuit; the rack is immersed in the electrolyte (the nickel wire mesh is in complete contact with the electrolyte), and nickel ions are reduced and deposited on the surface of the nickel wire mesh. After electroplating is completed, the power is turned off, the rack is removed, and the locking component 4 is released to remove the nickel wire mesh. The threaded rod is made of segmented copper alloy material, and the cross-sectional area of ​​the main rod is designed to be 0.7-1.0A / mm². The locking component has at least 4 contact points per meter between each side and the nickel mesh to ensure uniform current distribution.

[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A nickel wire mesh electroplating fixture, characterized in that, include: A frame mechanism includes: multiple support members, threaded rods, and bearing seats. The multiple support members are connected end to end by the threaded rods. Each support member includes a first support body and a second support body with mutually perpendicular axes. The first support body has a first threaded hole through it, and the second support body is fitted with a bearing seat. The first threaded hole and the bearing seat of adjacent support members are coaxially arranged and rotatably assembled with threaded rods. A locking mechanism includes a base plate and a locking assembly, the locking assembly and the base plate being used to clamp the mesh to be electroplated; A hook, one end of which is connected to the frame mechanism and the other end is used to connect to an external bracket; The insulating coating, except for the hooks that contact the external bracket and the short contact points of the locking mechanism that contact the nickel mesh, requires the deposition of an acid and alkali resistant epoxy resin insulating coating on other parts; the locking assembly includes: a base, a handle, a linkage mechanism and a pressure head, the base is disposed on the support member, the handle is hinged to the base, the pressure head is hinged to the base, and the end of the handle is driven to the pressure head through the linkage mechanism.

2. The nickel wire mesh electroplating fixture according to claim 1, characterized in that: The threaded rod is fitted with a suitable handwheel, which is located on the outside of the support.

3. The nickel wire mesh electroplating fixture according to claim 1, characterized in that: The base plate is located inside the support member.

4. A nickel wire mesh electroplating fixture according to claim 3, characterized in that: The pressure head includes: a connecting part, a threaded part, a nut part, an extension part, and a pressing part. The connecting part is hinged to the base and connected to the end of the linkage mechanism. The connecting part has a second threaded hole. The threaded part is adapted to the second threaded hole. The extension part is connected to the end of the threaded part. The pressing part is connected to the end of the extension part. The nut part is disposed on both sides of the pressing part and is adapted to the threaded part.

5. A nickel wire mesh electroplating fixture according to claim 4, characterized in that: The crimping portion extends in a direction parallel to the axial direction of the threaded rod.

6. A nickel wire mesh electroplating fixture according to claim 1, characterized in that: A locking mechanism is installed on the threaded rod.

7. A nickel wire mesh electroplating fixture according to claim 1, characterized in that: The height of the hook end relative to the ground is greater than the height of the threaded rod end relative to the ground.

8. A nickel wire mesh electroplating fixture according to claim 1, characterized in that: The frame mechanism, locking mechanism, and hooks are all made of conductive material. The mesh to be electroplated can be electrically connected to the external support through the locking mechanism, frame mechanism, and hooks. The number of hooks is at least two.

9. An electroplating system, characterized in that, Including a nickel wire mesh electroplating fixture as described in any one of claims 1-8.

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