Distributed electroplating device and method for multi-size bolt parts

Abstract

The invention provides a distributed electroplating device for multi-size bolt parts. The device comprises a hook 1; the device comprises an auxiliary anode 2, an insulating ring 3, a conducting ring 4 and a supporting mechanism 5, a multi-channel rectifier 6; a nut 7; the main body of the auxiliary anode 2 is of a cylindrical structure and is connected with the main anode through the hook 1, a fixed base 22 is arranged at the bottom of the auxiliary anode 2, a threaded hole 23 is formed in the fixed base, and a threaded rod 21 is arranged at the top of the auxiliary anode 2; holes are formed in the ring surface and the circumference of the insulating ring 3, threaded holes 31 for fixing parts are formed in the circumference and are used for fixing bolt parts, and the holes in the ring surface are holes for fixing the supporting mechanism 5, are divided into threaded holes 32 and non-threaded holes 33, and are uniformly arranged in an inserted manner; the conducting ring 4 is divided into an upper semi-conducting ring 41 and a lower semi-conducting ring 42, a bolt part is located in a part fixing hole 44 between the upper semi-conducting ring 41 and the lower semi-conducting ring 42, a fixing hole 43 is formed in the conducting ring, and threads are arranged in the fixing hole.

Description

Technical Field

[0001] The present application belongs to the field of electroplating technology, and in particular relates to a distributed electroplating device and method for multi-size bolt parts. Background Art

[0002] Bolts are crucial components in aircraft manufacturing and are manufactured in large batches. To ensure their longevity, the shank of the bolts must be electroplated with chrome. This coating must maintain concentricity, necessitating the design of tooling for these bolts. However, due to the large number of batches produced, designing specific tooling for each bolt specification would require a large number of different tooling types, making production management inefficient. Therefore, it is necessary to increase the tooling's compatibility across different bolt types while ensuring the coaxiality of the coating.

[0003] Therefore, traditional homemade electroplating tooling for bolt parts has the following obvious problems in actual production: 1) The coaxiality of the chrome plating layer of the bolt parts cannot be guaranteed, and the plating relies on manual polishing in the later stage, which is time-consuming and labor-intensive; 2) The overall tooling is welded into one piece and cannot be adjusted according to the parts. The tooling is only suitable for bolt parts of a single specification, and the number of tooling required is very high. Summary of the Invention

[0004] The present application provides a distributed electroplating device and method for multi-size bolt parts, which can solve the problem of low coaxiality of the chrome plating layer of the bolt parts and the inability to ensure simultaneous electroplating of multiple batches of bolt parts.

[0005] Technical solution: In the first aspect, the present application provides a distributed electroplating device for multi-size bolt parts, the device comprising a hook 1; an auxiliary anode 2, an insulating ring 3, a conductive ring 4, a support mechanism 5; a multi-channel rectifier 6; a nut 7; and an insulating gasket 8, wherein: The main body of the auxiliary anode 2 is a cylindrical structure and is connected to the main anode through a hook 1. The bottom of the auxiliary anode 2 has a fixed base 22 with a threaded hole 23 on the fixed base, and the top of the auxiliary anode 2 has a threaded rod 21; the insulating ring 3 has holes on the ring surface and the circumference, of which the circumference is a threaded hole 31 for fixing parts, which is used to fix bolt parts, and the holes on the ring surface are holes for fixing the support mechanism 5, which are divided into threaded holes 32 and non-threaded holes 33, and are evenly arranged interspersed; the conductive ring 4 is divided into an upper semi-conductive ring 41 and a lower semi-conductive ring 42, and bolt-like parts are located in the part fixing hole 44 between the upper semi-conductive ring 41 and the lower semi-conductive ring 42. The conductive ring has a fixing hole 43 with a thread in the fixing hole for bolt fixing, which is also a conductive point for connecting to the multi-channel rectifier 6; the hook 1 is connected to the auxiliary anode 2 through a threaded rod, and the hook 1 has insulating gaskets 8 above and below, and the upper end is fixed with a nut 7.

[0006] Specifically, one end of the support mechanism 5 is threaded, the threaded end is connected to the lower insulating ring, and the other end is plugged into the hole on the insulating ring. The distance between the parts layers can be changed by changing the length of the support rod.

[0007] Specifically, the conductive ring 4, each layer of bolt-like parts is clamped by two upper and lower conductive rings, there are threaded holes on the conductive rings, the upper and lower conductive rings are fixed by bolts, the bolts are externally connected to the main cathode, and the conductive ring 4 is replaced according to the specifications of the bolt parts for electroplating of bolt parts of different lengths.

[0008] Specifically, the multi-channel rectifier 6 is connected to each layer of the conductive ring 4 through a wire to control the total current of each layer of bolt-like parts.

[0009] Specifically, during electroplating, the current of each layer is separately controlled by a multi-channel rectifier 6; the insulating ring 3 and the conductive ring 4 are replaced at each layer to change the size and quantity of the bolt parts of each layer, so that the tooling is suitable for bolt parts of multiple sizes and realizes distributed electroplating of bolt parts.

[0010] Specifically, the fixed base 22 is connected to the auxiliary anode 2 by welding. There is a threaded hole on the base for fixing the support mechanism 5. The fixed base 22 is also the entire tooling support mechanism.

[0011] Specifically, each layer of bolt parts is evenly arranged toward the axis of the auxiliary anode to ensure the coaxiality of the electroplated layer of the bolt parts.

[0012] Specifically, the bolt parts on the same layer are located between the insulating ring 3 and the conductive ring 4, and the parts are evenly arranged radially toward the center of the tooling.

[0013] In a second aspect, the present application provides an electroplating method, which is applied to the electroplating device as described above, and the method comprises: Step 1: Classify the bolt parts, determine the number of layers of bolt parts, and the number of bolt parts in each layer; Step 2: According to the parts to be plated determined in step 1, select a conductive ring with the appropriate number of holes and radius; Step 3: From bottom to top, fix the insulating ring, bolt parts, conductive ring and support rod respectively; Step 4: After all parts are clamped, fix the hook on the threaded rod with a nut. There are insulating gaskets above and below the hook. Step 5: The current of each layer can be controlled separately by a multi-channel rectifier. The insulating ring and conductive ring can be replaced on each layer to change the size and quantity of the bolt parts on each layer, thereby realizing multi-batch distributed electroplating of bolt parts.

[0014] In summary, the present application provides a distributed electroplating device and method for multi-sized bolt parts. The beneficial effects of the present application are: 1. The tooling of the present invention arranges parts evenly along the axial direction of the auxiliary anode, thereby ensuring the coaxiality of the coating of the bolt parts.

[0015] 2. The tooling of the present invention is different from the tooling of one-piece welding. It adopts a modular design and can replace different insulating rings, conductive rings and support rods according to the number of parts clamped, the spacing between parts layers and the size of parts, which greatly increases the flexibility of the tooling.

[0016] 3. The present invention uses a multi-channel rectifier to achieve separate control of the electroplating parameters of each layer of parts, so that each layer of the tooling can achieve electroplating of bolt parts of different sizes.

[0017] 4. The tooling of the present invention adopts a modular design, and modules can be replaced according to the degree of wear of different modules on the tooling. This is different from the situation where traditional integrated tooling is partially damaged and becomes scrapped as a whole, thereby increasing the service life of the tooling and reducing the manufacturing cost of the tooling.

[0018] 5. The non-conductive parts of the present invention are made of a large amount of non-metallic materials such as polytetrafluoroethylene and polypropylene to avoid self-corrosion of the device and increase its service life.

[0019] 6. The anode of the present invention is made of titanium alloy plated with platinum or stainless steel plated with lead, which increases the service life of the anode. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a distributed electroplating device for multi-sized bolt parts provided in an embodiment of the present application; Figure 2 A schematic diagram of the anode structure provided in an embodiment of the present application; Figure 3 A schematic diagram of the insulating ring structure provided in an embodiment of the present application; Figure 4 A schematic diagram of the conductive ring structure provided in an embodiment of the present application; Figure 5 A schematic diagram of a single-layer bolt part clamping provided in an embodiment of the present application; Figure 6 A schematic diagram of the assembly of the hook and the auxiliary anode provided in an embodiment of the present application; Among them: 1-hook; 2-auxiliary anode; 21-threaded rod; 22-fixed base; 23-base threaded hole; 3-insulating ring; 31-threaded hole for part fixing; 32-threaded hole for support mechanism fixing; 33-non-threaded hole for support mechanism fixing; 4-conductive ring; 41-upper semi-conductive ring; 42-lower semi-conductive ring; 43-bolt fixing hole; 44-part fixing hole; 5-support mechanism; 6-multi-channel rectifier; 7-nut; 8-insulating gasket. DETAILED DESCRIPTION

[0021] Example 1 like Figure 1-6 As shown, an embodiment of the present application provides a distributed electroplating device for multi-size bolt parts, including a hook 1; an auxiliary anode 2, an insulating ring 3, a conductive ring 4, a support mechanism 5; a multi-channel rectifier 6; a nut 7; and an insulating gasket 8, wherein: The main body of the auxiliary anode 2 is a cylindrical structure and is connected to the main anode through a hook 1. The bottom of the auxiliary anode 2 has a fixed base 22 with a threaded hole 23 on the fixed base, and the top of the auxiliary anode 2 has a threaded rod 21; the insulating ring 3 has holes on the ring surface and the circumference, of which the circumference is a threaded hole 31 for fixing parts, which is used to fix bolt parts, and the holes on the ring surface are holes for fixing the support mechanism 5, which are divided into threaded holes 32 and non-threaded holes 33, and are evenly arranged interspersed; the conductive ring 4 is divided into an upper semi-conductive ring 41 and a lower semi-conductive ring 42, and bolt-like parts are located in the part fixing hole 44 between the upper semi-conductive ring 41 and the lower semi-conductive ring 42. The conductive ring has a fixing hole 43 with a thread in the fixing hole for bolt fixing, which is also a conductive point for connecting to the multi-channel rectifier 6; the hook 1 is connected to the auxiliary anode 2 through a threaded rod, and the hook 1 has insulating gaskets 8 above and below, and the upper end is fixed with a nut 7.

[0022] Specifically, the insulating ring 3 has threaded holes around it for fixing bolts, and the insulating ring 3 has smooth holes and threaded holes on its surface for fixing the support rods; Specifically, one end of the support mechanism 5 is threaded, the threaded end is connected to the lower insulating ring, and the other end is plugged into the hole on the insulating ring. The spacing between the parts layers can be changed by changing the length of the support rod; Specifically, the conductive ring 4, each layer of bolt parts is clamped by two upper and lower conductive rings, the conductive rings have threaded holes, the upper and lower conductive rings are fixed by bolts, the bolts are externally connected to the main cathode, and the conductive ring 4 is replaced according to the specifications of the bolt parts for electroplating of bolt parts of different lengths; Specifically, the multi-channel rectifier 6 is connected to each layer of conductive rings 4 through wires to control the total current of each layer of bolt-like parts; Specifically, during electroplating, the current of each layer is separately controlled by a multi-channel rectifier 6; the insulating ring 3 and the conductive ring 4 are replaced at each layer to change the size and quantity of the bolt parts of each layer, so that the tooling is suitable for bolt parts of multiple sizes and realizes distributed electroplating of bolt parts.

[0023] Specifically, the fixed base 22 is connected to the auxiliary anode 2 by welding. There is a threaded hole on the base for fixing the support mechanism 5. The fixed base 22 is also the entire tooling support mechanism; Preferably, the threaded rod 21 is connected to the auxiliary anode 2 by welding; Preferably, the hook 1 is fixed to the threaded rod 21 by a nut 7 and connected to the main anode; Preferably, each layer of bolt parts is evenly arranged toward the axis of the auxiliary anode to ensure the coaxiality of the electroplated layer of the bolt parts; Preferably, the bolt parts on the same layer are located between the insulating ring 3 and the conductive ring 4, and the parts are evenly arranged radially toward the center of the tooling.

[0024] Among them, the auxiliary anode 2 is connected to the main anode through the hook 1; the bolt parts are evenly fixed around the insulating ring 3 and directly connected to the conductive ring 4; the parts are clamped from bottom to top, and each layer is separated and supported by the support mechanism 5; each layer of conductive ring 4 is connected to the multi-channel rectifier 6, and the electroplating parameters of each layer of parts are individually controlled by the multi-channel rectifier 6 to achieve distributed control.

[0025] Among them, the bolt parts on the same layer are evenly cleared along the axis of the tooling to ensure that the distance between the parts on the same layer and the auxiliary anode 2 is completely consistent.

[0026] Among them, one end of the support mechanism 5 is threaded and the other end is unthreaded. The threaded end is connected to the threaded hole of the insulating ring downward; the other end is unthreaded and the unthreaded end is inserted into the unthreaded hole of the insulating ring upward.

[0027] There are two types of holes on the insulating ring 3, one with threads and one without threads, which are evenly arranged.

[0028] Among them, the insulating ring 3 has threaded holes around it, which are evenly arranged for fixing bolt parts. The matching insulating ring can be replaced according to the part requirements.

[0029] The conductive ring 4 on the same layer is divided into upper and lower parts. There are threaded holes on the conductive ring for fixing the conductive ring. The fixing bolts are also conductive points for connecting the conductive ring 4 with the multi-channel rectifier 6.

[0030] Among them, the tooling is clamped from bottom to top, and the specifications of bolt parts on different layers can be different.

[0031] In other embodiments of the present application, the following Figure 1 -Attached Figure 6 This application is described in further detail.

[0032] During electroplating, the current of each layer can be controlled separately by a multi-channel rectifier 6; the insulating ring 3 and the conductive ring 4 can be replaced in each layer to change the size and quantity of the bolt parts in each layer, so that the tooling is suitable for multi-size bolt parts and realizes distributed electroplating of bolt parts.

[0033] The distributed electroplating tooling for multi-size bolt parts in this application is different from the traditional integrated welding tooling. It adopts a modular and multi-channel distributed design. The tooling module can be replaced according to the part size. Therefore, different electroplating parameters can be used for electroplating bolt parts of different specifications at the same time. The tooling module can be adjusted according to the part size and quantity, thereby having a high degree of flexibility and adaptability.

[0034] The tooling of the present invention arranges parts evenly along the axial direction of the tooling, thereby ensuring the coaxiality of the coating of the bolt parts.

[0035] The tooling of the present invention is different from the tooling of one-piece welding molding. It adopts a modular design and can replace different insulating rings 3, conductive rings 4 and support mechanisms 5 according to the number of parts clamped, the part layer spacing and the part size, which greatly increases the flexibility of the tooling.

[0036] The present invention uses a multi-channel rectifier 6 to achieve separate control of the electroplating parameters of each layer of parts, so that each layer of the tooling can achieve electroplating of bolt parts of different sizes.

[0037] The tooling of the present invention adopts a modular design, and modules can be replaced according to the degree of wear of different modules on the tooling. This is different from the situation where traditional integrated tooling is partially damaged and the entire tooling is scrapped. It increases the service life of the tooling and reduces the manufacturing cost of the tooling.

[0038] The non-conductive parts of the present invention largely use non-metallic materials such as polytetrafluoroethylene and polypropylene to avoid self-corrosion of the device and increase its service life.

[0039] The anode of the present invention is made of titanium alloy plated with platinum or stainless steel plated with lead, thereby increasing the service life of the anode.

[0040] Example 2 In a second aspect, an embodiment of the present application provides an electroplating method, which is applied to the distributed electroplating device for multi-sized bolt parts as described above, and the method includes: Step 1: Classify the bolt parts, determine the number of layers of bolt parts, and the number of bolt parts in each layer; Step 2: Select a conductive ring 4 with a suitable number of holes and a suitable radius, an insulating ring 3, and a supporting mechanism 5 with a suitable length according to the part to be plated; Step 3: From bottom to top, fix the insulating ring 3, bolt parts, conductive ring and support mechanism 5 respectively; Step 4: After all parts are clamped, fix the hook on the threaded rod with the nut 7. There are insulating washers 8 above and below the hook 1. Step 5: The current of each layer is controlled separately by a multi-channel rectifier 6, and the insulating ring 3 and the conductive ring 4 are replaced in each layer to change the size and quantity of the bolt parts in each layer, thereby realizing multi-batch distributed electroplating of bolt parts and obtaining a coating that meets the requirements.

[0041] In summary, the device and method for distributed electroplating of multi-sized bolt parts of the present application can ensure the coaxiality of the electroplated chromium layer of the bolt parts; the tooling of the present invention is different from the tooling of one-piece welding, and adopts a modular design. Different insulating rings 3, conductive rings 4 and support mechanisms 5 can be replaced according to the number of parts clamped, the spacing between part layers and the size of parts, which greatly increases the flexibility of the tooling; the present invention uses a multi-channel rectifier 6 to achieve separate control of the electroplating parameters of each layer of parts, so that each layer of the tooling can achieve electroplating of bolt parts of different sizes; the tooling of the present invention adopts a modular design, and modules can be replaced according to the degree of wear of different modules on the tooling, which is different from the situation where traditional one-piece tooling is partially damaged and scrapped as a whole, thereby improving the service life of the tooling and reducing the manufacturing cost of the tooling.

[0042] The present application provides an apparatus and method for distributed electroplating of multi-sized bolt parts, which adopts a modular and multi-channel distributed design concept, can solve the problem of plating coaxiality of bolt parts, and realize simultaneous electroplating of multi-sized bolt parts, thereby solving the problem of multiple batches and small batches of bolt parts in aircraft manufacturing, reducing the manufacturing cost and management cost of tooling, and is suitable for the simultaneous electroplating of multi-sized bolt parts.

[0043] The distributed electroplating tooling for multi-sized bolt parts disclosed in this application differs from traditional integrated welding tooling in that it utilizes a modular, multi-channel distributed design, ensuring the coaxiality of the plating on the bolt parts. Tooling modules can be replaced based on part size, allowing for simultaneous plating of bolt parts of varying specifications using different plating parameters. Tooling modules can be adjusted based on part size and quantity, resulting in a high degree of flexibility and adaptability. While ensuring the coaxiality of the chrome plating on the bolt parts, the tooling is suitable for bolt parts of multiple sizes and specifications, greatly increasing the tooling's versatility.

Claims

1. A distributed electroplating device for multi-size bolt parts, characterized in that: The device comprises a hook (1); an auxiliary anode (2); an insulating ring (3); a conductive ring (4); a supporting mechanism (5); a multi-channel rectifier (6); a nut (7); and an insulating gasket (8), wherein: The main body of the auxiliary anode (2) is a cylindrical structure, connected to the main anode through a hook (1), the bottom of the auxiliary anode (2) is provided with a fixed base (22), the fixed base is provided with a threaded hole (23), and the top of the auxiliary anode (2) is provided with a threaded rod (21); the insulating ring (3) has holes on the ring surface and the circumference, wherein the circumference is a threaded hole (31) for fixing parts, which is used for fixing bolt parts, and the holes on the ring surface are holes for fixing the support mechanism (5), which are divided into threaded holes (32) and non-threaded holes (33), which are evenly arranged. The conductive ring (4) is divided into an upper conductive ring (41) and a lower conductive ring (42), and the bolt-like parts are located in the parts fixing hole (44) between the upper conductive ring (41) and the lower conductive ring (42). The conductive ring has a fixing hole (43), and the fixing hole has a thread for bolt fixing, which is also a conductive point for connecting with the multi-channel rectifier (6); the hook (1) is connected to the auxiliary anode (2) through a threaded rod, and the hook (1) has insulating gaskets (8) above and below, and the upper end is fixed with a nut (7).

2. The distributed electroplating device for multi-size bolt parts according to claim 1 is characterized in that: One end of the support mechanism (5) is threaded, the threaded end is connected to the lower insulating ring, and the other end is plugged into the hole on the insulating ring. The distance between the parts layers can be changed by changing the length of the support rod.

3. The distributed electroplating device for multi-size bolt parts according to claim 1 is characterized in that: Conductive ring (4), each layer of bolt parts is clamped by two upper and lower conductive rings, the conductive rings have threaded holes, the upper and lower conductive rings are fixed by bolts, the bolts are externally connected to the main cathode, and the conductive ring (4) is replaced according to the specifications of the bolt parts, and is used for electroplating bolt parts of different lengths.

4. The distributed electroplating device for multi-size bolt parts according to claim 1 is characterized in that: The multi-channel rectifier (6) is connected to each layer of conductive rings (4) via a wire to control the total current of each layer of bolt-like parts.

5. The distributed electroplating device for multi-size bolt parts according to claim 1 is characterized in that: During electroplating, the current of each layer is controlled separately through a multi-channel rectifier (6); the insulating ring (3) and the conductive ring (4) are replaced at each layer to change the size and quantity of the bolt parts at each layer, so that the tooling is suitable for bolt parts of multiple sizes and distributed electroplating of bolt parts is achieved.

6. The distributed electroplating device for multi-size bolt parts according to claim 1 is characterized in that: The fixed base (22) is connected to the auxiliary anode (2) by welding. The base has a threaded hole for fixing the support mechanism (5). The fixed base (22) is also the entire tooling support mechanism.

7. The distributed electroplating device for multi-size bolt parts according to claim 1 is characterized in that: Each layer of bolt parts is evenly arranged toward the axis of the auxiliary anode to ensure the coaxiality of the electroplated coating of the bolt parts.

8. The distributed electroplating device for multi-size bolt parts according to claim 1 is characterized in that: The bolt parts on the same layer are located between the insulating ring (3) and the conductive ring (4), and the parts are evenly arranged radially toward the center of the tooling.

9. An electroplating method, characterized in that: The method is applied to the electroplating device according to any one of claims 1 to 8, and the method comprises: Step 1: Classify the bolt parts, determine the number of layers of bolt parts, and the number of bolt parts in each layer; Step 2: According to the parts to be plated determined in step 1, select a conductive ring with the appropriate number of holes and radius; Step 3: From bottom to top, fix the insulating ring, bolt parts, conductive ring and support rod respectively; Step 4: After all parts are clamped, fix the hook on the threaded rod with a nut. There are insulating gaskets above and below the hook. Step 5: The current of each layer can be controlled separately by a multi-channel rectifier. The insulating ring and conductive ring can be replaced on each layer to change the size and quantity of the bolt parts on each layer, thereby realizing multi-batch distributed electroplating of bolt parts.

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