A hanger shaft for an electroplating line

Abstract

The utility model provides a kind of electroplating line hanger shaft, including hanger body, copper shaft core is arranged in the middle part, copper shaft core one end is connected with external transmission mechanism, the other end extends to electroplating bath and is contacted with plating solution, copper baffle sleeve is set in the side of copper shaft core, polytetrafluoro sleeve is arranged between hanger body and copper baffle sleeve, U-shaped sealing sleeve is arranged in polytetrafluoro sleeve, U-shaped sealing sleeve is simultaneously coated in copper shaft core outer wall, copper baffle sleeve inner wall, and with hanger body end face sealing cooperation. Through the integrated design of polytetrafluoro sleeve and U-shaped sealing sleeve, the connecting gap between the two in traditional structure is eliminated, and the multiple sealing structure of the first and second fitting grooves and the annular sealing ring and the annular groove is matched, forming a three-dimensional sealing system, improving the leakage effect, reducing the risk of plating solution leakage, reducing the replacement frequency of accessories, and shortening the equipment downtime.

Description

Technical Field

[0001] This utility model relates to the field of electroplating equipment technology, specifically to an electroplating line hanger shaft. Background Technology

[0002] In the electroplating production process, the hanger shaft of the electroplating line is a key component ensuring the stable operation of the electroplating process. Its sealing performance directly affects the leakage prevention performance of the plating solution, electroplating quality, and production efficiency. Existing second-generation electroplating lines commonly use a PTFE sleeve in contact with the plating solution, achieving a seal through a planar sealing structure. However, this structure has significant drawbacks in long-term use: the PTFE sleeve is easily deformed by external forces, leading to seal failure and plating solution leakage. To solve the leakage problem, current technologies typically require periodic replacement of the PTFE sleeve and repair of the sealing end face and installation of new seals. This maintenance method not only increases the workload significantly, leading to prolonged equipment downtime and affecting production progress, but also increases production costs due to frequent replacement of PTFE sleeves and other accessories. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide an electroplating line hanger shaft to solve the problems mentioned in the background section. This invention features a novel structure. Through the integrated molding design of the PTFE sleeve and the U-shaped sealing sleeve, the connection gap between the two in traditional structures is eliminated. Combined with a multi-layered sealing structure consisting of a fitting ring and a first fitting groove, a second fitting groove, and an annular sealing ring and an annular groove, a three-dimensional sealing system is formed, improving leak prevention, reducing the risk of plating solution leakage, decreasing the frequency of parts replacement, shortening equipment downtime, reducing maintenance workload, and effectively lowering production costs.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: an electroplating line hanger shaft, comprising a hanger body, a copper shaft core being disposed through the middle of the hanger body, one end of the copper shaft core being disposed through the shaft center of the hanger body and connected to an external transmission mechanism, the other end of the copper shaft core extending into the electroplating tank and contacting the plating solution, a copper retaining sleeve being sleeved around the copper shaft core, a polytetrafluoroethylene (PTFE) sleeve being disposed between the hanger body and the copper retaining sleeve, a U-shaped sealing sleeve being disposed inside the PTFE sleeve, the U-shaped sealing sleeve simultaneously covering the outer wall of the copper shaft core and the inner wall of the copper retaining sleeve, and sealingly engaging with the end face of the hanger body.

[0005] Furthermore, the PTFE sleeve and the U-shaped sealing sleeve are integrally molded structures, manufactured through a molding process, eliminating the connection gap between the two to prevent leakage.

[0006] Furthermore, the copper retaining sleeve and the copper shaft core are connected by an interference fit, and an installation gap is still maintained between them. The U-shaped sealing sleeve is located in the gap between the copper retaining sleeve and the copper shaft core.

[0007] Furthermore, the U-shaped sealing sleeve is fixedly connected with a fitting ring protruding from its inner and outer walls, the inner wall of the copper retainer sleeve is provided with a first fitting groove, and the outer wall at the connection between the copper shaft core and the copper retainer sleeve is provided with a second fitting groove.

[0008] Furthermore, the fitting ring on the outer wall of the U-shaped sealing sleeve mates with the first fitting groove, and the fitting ring on the inner wall of the U-shaped sealing sleeve mates with the second fitting groove.

[0009] Furthermore, the hanger body has an annular groove on the side facing the PTFE sleeve, and the PTFE sleeve has an annular sealing ring that matches the annular groove on the side facing the hanger body. The annular sealing ring and the U-shaped sealing sleeve are integrally formed.

[0010] Furthermore, the depth of the annular groove is adapted to the height of the annular sealing ring, and the width of the annular groove is adapted to the thickness of the annular sealing ring, ensuring that the annular sealing ring does not loosen or shift after being embedded in the annular groove.

[0011] Furthermore, the outer circumferential surface of the copper retainer is provided with anti-slip texture.

[0012] The beneficial effects of this utility model are: 1. The electroplating line hanger shaft eliminates the connection gap between the two in the traditional structure through the integrated molding design of PTFE sleeve and U-shaped sealing sleeve; combined with the fit of the fitting ring with the first fitting groove and the second fitting groove, as well as the fit of the annular sealing ring with the annular groove, a multi-seal structure is formed, which improves the anti-leakage effect, reduces the risk of plating solution leakage, reduces the frequency of parts replacement, shortens equipment downtime, reduces maintenance workload, and effectively reduces production costs.

[0013] 2. In this electroplating line hanger shaft, the copper retainer is made of high-strength copper, which is not easily deformed by external forces. The anti-slip texture on its outer surface helps enhance assembly stability, prevents component loosening, and thus avoids sealing failure. The U-shaped sealing sleeve is made of carbon fiber-reinforced modified polytetrafluoroethylene, significantly improving its deformation resistance and wear resistance. These structures work together to ensure that the hanger shaft effectively prevents plating solution leakage while transmitting power, ensuring stable electroplating operations. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an electroplating line hanger shaft according to the present invention; Figure 2 This is a side sectional view of the copper retaining sleeve portion of this utility model. Figure 3 This utility model Figure 2 -Enlarged structural diagram at point A; Figure 4 This utility model Figure 2 Enlarged structural diagram at point B; Figure 5 This is a schematic diagram of the structure of the polytetrafluoroethylene sleeve of this utility model.

[0015] In the diagram: 1. Hanger body; 2. Copper shaft core; 3. Copper retaining sleeve; 4. PTFE sleeve; 5. U-shaped sealing sleeve; 6. Fitting ring; 7. Annular sealing ring; 8. Annular groove; 9. Anti-slip texture; 10. First fitting groove; 11. Second fitting groove. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] Please refer to Figures 1 to 5 This utility model provides a technical solution: an electroplating line hanger shaft, including a hanger body 1, a copper shaft core 2 is disposed through the middle of the hanger body 1, one end of the copper shaft core 2 is disposed through the shaft of the hanger body 1 and connected to an external transmission mechanism, the other end of the copper shaft core 2 extends into the electroplating tank and contacts the plating solution, a copper retaining sleeve 3 is sleeved around the copper shaft core 2, a polytetrafluoroethylene sleeve 4 is disposed between the hanger body 1 and the copper retaining sleeve 3, a U-shaped sealing sleeve 5 is disposed inside the polytetrafluoroethylene sleeve 4, the U-shaped sealing sleeve 5 covers both the outer wall of the copper shaft core 2 and the inner wall of the copper retaining sleeve 3, and is sealed to the end face of the hanger body 1.

[0018] In this embodiment, the PTFE sleeve 4 and the U-shaped sealing sleeve 5 are integrally molded structures, manufactured by molding process to eliminate the connection gap between them and avoid leakage. The copper retaining sleeve 3 and the copper shaft core 2 are connected by interference fit, and an installation gap is still retained between them. The U-shaped sealing sleeve 5 is located in the gap between the copper retaining sleeve 3 and the copper shaft core 2. The U-shaped sealing sleeve 5 is fixedly connected with a fitting ring 6 protruding from its inner and outer walls. The inner wall of the copper retaining sleeve 3 has a first fitting groove 10, and the outer wall of the connection between the copper shaft core 2 and the copper retaining sleeve 3 has a second fitting groove 11. The part of the fitting ring 6 on the outer wall of the U-shaped sealing sleeve 5 cooperates with the first fitting groove 10, and the part of the fitting ring 6 on the inner wall of the U-shaped sealing sleeve 5 cooperates with the second fitting groove 11.

[0019] Specifically, during operation, one end of the copper shaft core 2 is connected to an external transmission mechanism to provide power transmission for the entire shaft, while the other end extends into the electroplating tank to contact the plating solution. A copper retainer sleeve 3 is interference-fitted around the copper shaft core 2, with the gap between them providing space for the installation of the U-shaped sealing sleeve 5. The integrally formed PTFE sleeve 4 and the U-shaped sealing sleeve 5 play a core sealing role. The fitting rings 6 on the inner and outer walls of the U-shaped sealing sleeve 5 are precisely embedded in the second fitting groove 11 on the outer wall of the copper shaft core 2 and the first fitting groove 10 on the inner wall of the copper retainer sleeve 3, respectively, preventing the plating solution from leaking along the gap between the copper shaft core 2 and the copper retainer sleeve 3 in the radial direction.

[0020] In this embodiment, the hanger body 1 has an annular groove 8 on the side facing the PTFE sleeve 4, and the PTFE sleeve 4 has an annular sealing ring 7 that mates with the annular groove 8 on the side facing the hanger body 1. The annular sealing ring 7 and the U-shaped sealing sleeve 5 are integrally formed. The depth of the annular groove 8 is adapted to the height of the annular sealing ring 7, and the width of the annular groove 8 is adapted to the thickness of the annular sealing ring 7, ensuring that the annular sealing ring 7 does not loosen or shift after being embedded in the annular groove 8. The outer circumferential surface of the copper retainer 3 is provided with anti-slip texture 9.

[0021] Specifically, the annular sealing ring 7 on the side of the PTFE sleeve 4 facing the hanger body 1 is tightly fitted with the annular groove 8 on the hanger body 1. The height and thickness of the sealing ring 7 are matched with the depth and width of the groove 8 to achieve axial sealing and prevent the plating solution from seeping out from the connection between the hanger body 1 and the PTFE sleeve 4. In addition, the anti-slip texture 9 on the outer circumference of the copper retainer 3 facilitates the clamping operation during installation and enhances the stability of the fit with external components.

[0022] When using the hanger shaft of this electroplating line, one end of the copper shaft core 2 is connected to an external transmission mechanism to transmit power, while the other end extends into the electroplating tank to contact the plating solution, driving the entire hanger shaft to work. The copper retainer sleeve 3 is interference-fitted around the copper shaft core 2, with a pre-reserved gap between them for installing the U-shaped sealing sleeve 5. The fluorine sleeve 4 and the U-shaped sealing sleeve 5 are integrally formed, constituting the core sealing component. The fitting rings 6 on the inner and outer walls of the U-shaped sealing sleeve 5 are respectively embedded in the second fitting groove 11 on the outer wall of the copper shaft core 2 and the first fitting groove 10 on the inner wall of the copper retainer sleeve 3, forming a radial seal that effectively prevents the plating solution from leaking along the gap between the copper shaft core 2 and the copper retainer sleeve 3.

[0023] Meanwhile, the PTFE sleeve 4 has an annular sealing ring 7 on the side facing the hanger body 1. This annular sealing ring 7 fits tightly with the annular groove 8 on the hanger body 1, and their dimensions are compatible to achieve axial sealing, preventing plating solution from seeping out from the joint. Furthermore, the anti-slip texture 9 on the outer circumference of the copper retainer 3 helps enhance assembly stability and prevents parts from loosening during operation, thus avoiding sealing structure failure. The overall structure effectively prevents plating solution leakage while ensuring the hanger shaft can transmit power, ensuring continuous and stable electroplating operations. The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hanger shaft for an electroplating line, comprising a hanger body (1), characterized in that: A copper shaft core (2) is provided through the middle of the hanger body (1). One end of the copper shaft core (2) is provided through the shaft of the hanger body (1) and connected to the external transmission mechanism. The other end of the copper shaft core (2) extends into the electroplating tank and contacts the plating solution. A copper retaining sleeve (3) is provided around the copper shaft core (2). A polytetrafluoroethylene sleeve (4) is provided between the hanger body (1) and the copper retaining sleeve (3). A U-shaped sealing sleeve (5) is provided inside the polytetrafluoroethylene sleeve (4). The U-shaped sealing sleeve (5) covers the outer wall of the copper shaft core (2) and the inner wall of the copper retaining sleeve (3) and seals with the end face of the hanger body (1).

2. The electroplating line hanger shaft according to claim 1, characterized in that: The polytetrafluoroethylene sleeve (4) and the U-shaped sealing sleeve (5) are integrally molded structures, which are manufactured by molding process to eliminate the connection gap between the two and avoid leakage.

3. The electroplating line hanger shaft according to claim 1, characterized in that: The copper retaining sleeve (3) and the copper shaft core (2) are connected by an interference fit, and there is still an installation gap between them. The U-shaped sealing sleeve (5) is located in the gap between the copper retaining sleeve (3) and the copper shaft core (2).

4. The electroplating line hanger shaft according to claim 1, characterized in that: The U-shaped sealing sleeve (5) is fixedly connected with a fitting ring (6) protruding from its inner and outer walls. The inner wall of the copper retainer (3) is provided with a first fitting groove (10), and the outer wall at the connection between the copper shaft core (2) and the copper retainer (3) is provided with a second fitting groove (11).

5. The electroplating line hanger shaft according to claim 4, characterized in that: The fitting ring (6) is located on the outer wall of the U-shaped sealing sleeve (5) and cooperates with the first fitting groove (10). The fitting ring (6) is located on the inner wall of the U-shaped sealing sleeve (5) and cooperates with the second fitting groove (11).

6. The electroplating line hanger shaft according to claim 1, characterized in that: The hanger body (1) has an annular groove (8) on the side facing the polytetrafluoroethylene sleeve (4), and the polytetrafluoroethylene sleeve (4) has an annular sealing ring (7) that matches the annular groove (8) on the side facing the hanger body (1). The annular sealing ring (7) and the U-shaped sealing sleeve (5) are integrally formed.

7. The electroplating line hanger shaft according to claim 6, characterized in that: The depth of the annular groove (8) is adapted to the height of the annular sealing ring (7), and the width of the annular groove (8) is adapted to the thickness of the annular sealing ring (7), ensuring that the annular sealing ring (7) is not loosened or displaced after being embedded in the annular groove (8).

8. The electroplating line hanger shaft according to claim 1, characterized in that: The outer circumferential surface of the copper retainer (3) is provided with anti-slip texture (9).

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