Wire tinning leak-proof protection device

Abstract

The utility model relates to wire rod processing technical field, especially a wire rod tinning sealed leak protection device, including incoming line subassembly, incoming line pipeline, connecting pipeline, sealing element and tin furnace, the incoming line subassembly is box type structure, and forms the closed space in the inside, the closed space is filled with protective gas, one end of incoming line pipeline is connected with the incoming line subassembly, and is linked with the closed space, one end of connecting pipeline is connected with incoming line pipeline, the other end extends to tin furnace, and is immersed in the heated liquid tin of tin furnace, the sealing element sets up between connecting pipeline and incoming line pipeline, and is used for the sealing of both connection places. The utility model realizes continuous atmosphere isolation and sealing before wire rod incoming and outgoing. Effectively block the air to enter, significantly reduce wire rod surface oxidation and scale formation, guarantee the activity of the metal surface before plating.

Description

Technical Field

[0001] This utility model relates to the field of wire processing technology, and in particular to a wire tin-plating sealing and leak-proof protection device. Background Technology

[0002] Metal wires are widely used in electronics, cables, and precision devices. Their surface brazing, welding, and corrosion protection processes often rely on a uniform and dense tin plating layer. In wire tin plating, to avoid oxidation and surface contamination at high temperatures, the wire is typically protected with an inert or reducing gas before entering the tin bath to create an oxygen-free or low-oxygen local atmosphere, improving the wettability and adhesion of liquid tin. However, existing equipment is prone to leakage problems at the gas seal and wire transition points: aging of the wire inlet / outlet pipe seals, poor sealing at joints, assembly gaps, thermal expansion, or vibration-induced displacement can all cause protective gas escape or air backflow. Decreased airtightness leads to partial oxidation or contamination of the wire surface before tinning, resulting in defects such as poor wetting, uneven plating, pinholes, and peeling. This increases the rejection rate, wastes molten tin and protective gas, and increases subsequent cleaning and rework costs. Therefore, achieving reliable and adjustable sealing and stable mechanical positioning at the wire inlet / outlet interface to ensure the integrity of the atmosphere before tin plating is a key technical issue for improving plating quality and production efficiency. Utility Model Content

[0003] To address the aforementioned problems, this invention provides continuous atmosphere isolation and sealing before the wire enters and exits the circuit. It effectively blocks air from entering, significantly reduces surface oxidation and scale formation on the wire, and ensures the surface activity of the metal before plating, thus providing a leak-proof and sealing protection device for tin plating.

[0004] The technical solution adopted by this utility model is: a wire tinning sealing and leak-proof protection device, including a wire inlet assembly, a wire inlet pipe, a connecting pipe, a sealing element, and a tin furnace. The wire inlet assembly has a box-type structure and forms a sealed space inside. The sealed space is filled with a protective gas. One end of the wire inlet pipe is connected to the wire inlet assembly and communicates with the sealed space. One end of the connecting pipe is connected to the wire inlet pipe and the other end extends to the tin furnace and is immersed in the heated liquid tin in the tin furnace. The sealing element is set between the connecting pipe and the wire inlet pipe and is used to seal the connection between the two.

[0005] A further improvement to the above solution is that a frame is provided below the input assembly, and the frame is provided with a support frame, which is used to support the input assembly at an angle.

[0006] A further improvement to the above scheme is that an inflation module is provided below the inlet assembly on the frame, the inflation module is provided with an inflation pipe, the inflation pipe is connected to a flexible pipe, one end of the flexible pipe is connected to the inlet pipe and is used to supply air to the inlet pipe.

[0007] A further improvement to the above scheme is that the flexible pipe is equipped with a tee joint, which is located at the middle end of the inlet pipe to fix the inlet pipe.

[0008] A further improvement to the above solution is that a fixed bracket is provided on one side of the tin furnace, and the fixed bracket is used to fix the connecting pipe.

[0009] A further improvement to the above solution is that the fixed bracket includes a fixed end plate, an adjusting connecting rod, and an adjusting fixed plate; two fixed end plates are provided and are respectively provided on both sides of the tin furnace; the fixed end plates are provided with adjusting grooves; the adjusting connecting rod is provided on the adjusting grooves and connected to the adjusting fixed plate; the adjusting fixed plate is used to fix the connecting pipe; and the adjusting connecting rod rotates to adjust the angle of the adjusting fixed plate.

[0010] A further improvement to the above solution is that the connecting pipe is provided with a limiting ring, and the adjusting and fixing plate is provided with a through groove, and the limiting ring is used to fix the connecting pipe to the limiting ring.

[0011] A further improvement to the above solution is that a locking element is provided on the side of the connecting pipe near the sealing element, one end of the inlet pipe is inserted into the connecting pipe, and the locking element is used to lock and fix the inlet pipe.

[0012] A further improvement to the above solution is that the sealing element includes a sealing sleeve and a sealing locking ring. The sealing sleeve covers the space between the connecting pipe and the inlet pipe. Two sealing locking rings are provided, which are respectively located on both sides of the sealing sleeve and fix the sealing sleeve to the connecting pipe and the inlet pipe respectively.

[0013] A further improvement to the above scheme is that the tin furnace is equipped with a wire assembly and a heating element, the heating element is disposed inside the tin furnace, and the wire assembly is opposite to the outlet end of the connecting pipe.

[0014] The beneficial effects of this utility model are: Compared to existing wire tinning methods, this invention provides pre-plating atmosphere protection for wires. It utilizes a sealed space formed by a box-type wire inlet assembly, filled with a protective gas, and a sealing element between the wire inlet pipe and the connecting pipe to the immersion furnace. This achieves continuous atmosphere isolation and sealing before the wire enters and exits the furnace. This effectively blocks air ingress, significantly reducing surface oxidation and scale formation, ensuring the activity of the metal surface before plating. The immersion connection maintains a continuous interface between liquid tin and the protective atmosphere, preventing tin overflow and gas backflow, reducing tin loss and contamination. The stable inert / protective atmosphere improves plating uniformity and adhesion, reducing rework and scrap rates, and increasing production line yield. The sealed structure and protective gas also extend the furnace's lifespan, reduce slag generation and cleaning frequency, saving energy and reducing maintenance costs. The overall device is easily integrated with continuous production lines, improving production stability and process controllability, meeting the quality and environmental requirements of large-scale industrial tinning. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the wire tin-plating sealing and leak-proof protection device of this utility model; Figure 2 for Figure 1 A three-dimensional schematic diagram of the tin-plated sealing and leak-proof protection device for medium-strength wire from another perspective; Figure 3 for Figure 2 Enlarged diagram of point A in the diagram.

[0016] Explanation of reference numerals in the attached drawings: 1. Cable entry assembly; 11. Frame; 12. Support frame; 13. Inflation module; 14. Inflation pipe; 15. Flexible pipe; 151. T-joint; 2. Cable entry pipe; 3. Connecting pipe; 31. Limiting ring; 32. Locking element; 4. Sealing element; 41. Sealing sleeve; 42. Sealing locking ring; 5. Solder pot; 51. Wire assembly; 52. Heating element; 6. Fixing bracket; 61. Fixing end plate; 611. Adjusting groove; 62. Adjusting connecting rod; 63. Adjusting fixing plate. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0018] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Figures 1-3 As shown, in one embodiment of this utility model, a wire tinning sealing and leak-proof protection device is provided, including a wire inlet assembly 1, a wire inlet pipe 2, a connecting pipe 3, a sealing element 4, and a tin furnace 5. The wire inlet assembly 1 has a box-type structure and forms a sealed space inside, which is filled with a protective gas. One end of the wire inlet pipe 2 is connected to the wire inlet assembly 1 and communicates with the sealed space. One end of the connecting pipe 3 is connected to the wire inlet pipe 2, and the other end extends to the tin furnace 5 and is immersed in the heated liquid tin in the tin furnace 5. The sealing element 4 is disposed between the connecting pipe 3 and the wire inlet pipe 2 and is used to seal the connection between the two. This embodiment is used for atmosphere protection before wire tinning. By forming a sealed space with a protective gas in the box-type wire inlet assembly 1, and combining it with the sealing element 4 between the wire inlet pipe 2 and the connecting pipe 3 immersed in the tin furnace 5, continuous atmosphere isolation and sealing are achieved before the wire enters and exits. Effectively blocking air ingress significantly reduces wire surface oxidation and scale formation, ensuring the activity of the metal surface before plating; the immersion connection maintains a continuous interface between liquid tin and the protective atmosphere, preventing tin overflow and gas backflow, reducing tin loss and contamination; the stable inert / protective atmosphere improves plating uniformity and adhesion, reducing rework and scrap rates, and increasing production line yield; the sealed structure and protective gas also extend the service life of the tin furnace, reduce slag generation and cleaning frequency, save energy, and reduce maintenance costs; the overall device is easy to integrate with continuous production lines, improving production stability and process controllability, and meeting the quality and environmental protection requirements of industrial-scale mass tin plating.

[0020] A frame 11 is provided below the inlet assembly 1, and the frame 11 is provided with a support frame 12 for tilting the inlet assembly 1. Specifically, an inflation module 13 is provided below the inlet assembly 1 on the frame 11. The inflation module 13 is provided with an inflation pipe 14, which is connected to a flexible pipe 15. One end of the flexible pipe 15 is connected to the inlet pipe 2 and is used to supply air to the inlet pipe 2. The flexible pipe 15 is provided with a T-joint 151, which is located at the middle end of the inlet pipe 2 to fix the inlet pipe 2. In this embodiment, multiple process and structural improvements are achieved through the combination of the frame 11, the tilting support, the inflation module 13, the flexible pipe 15, and the T-joint 151. The inclined support ensures that the wire entry assembly 1 is at a stable and controllable entry angle, which is beneficial for the gravity displacement of the wire and maintains a consistent immersion angle, thereby improving the uniformity of the plating. The inflation module 13 continuously supplies protective gas to the wire entry pipe 2 through the inflation pipe 14, forming a positive pressure gas cover to prevent atmospheric backflow and reduce oxidation and tin surface contamination. The flexible pipe 15 serves as a flexible connection between the gas and the structure, absorbing thermal expansion, vibration, and displacement, reducing stress concentration caused by rigid connections, extending the life of the sealing element 4 and the pipeline, and facilitating quick disassembly and maintenance. The tee joint 151 located in the middle of the wire entry pipe 2 is used for pipe fixing and positioning, eliminating pipe sagging and offset, ensuring that the sealing part is always in the designed position, thereby improving sealing reliability and reducing the probability of leakage. This improves the atmosphere protection effect, sealing stability, and production continuity, reduces maintenance frequency and defect rate, and is conducive to continuous industrial production.

[0021] A fixed bracket 6 is provided on one side of the tin furnace 5, which is used to fix the connecting pipe 3. The fixed bracket 6 includes a fixed end plate 61, an adjusting rod 62, and an adjusting fixing plate 63. Two fixed end plates 61 are provided, one on each side of the tin furnace 5. The fixed end plate 61 is provided with an adjusting groove 611. The adjusting rod 62 is provided on the adjusting groove 611 and connected to the adjusting fixing plate 63. The adjusting fixing plate 63 is used to fix the connecting pipe 3. The adjusting rod 62 rotates to adjust the angle of the adjusting fixing plate 63. Specifically, the connecting pipe 3 is provided with a limit ring 31, and the adjusting fixing plate 63 is provided with a through groove. The limit ring 31 is used to fix the connecting pipe 3 to the limit ring 31. In this embodiment, the constraint and adjustable positioning of the connecting pipe 3 by the fixed bracket 6 on the side of the tin furnace 5 improves the stability, sealing reliability, and maintenance convenience of the device. The double-sided fixed end plates 61 form symmetrical support, reducing pipe offset and sway caused by its own weight, tension, or external forces. The adjusting groove 611, in conjunction with the rotatable adjusting rod 62 and adjusting fixed plate 63, can precisely adjust the installation angle and position of the connecting pipe 3, facilitating rapid correction of the immersion angle and depth under different process parameters, different wire diameters, or thermal deformation of the tin furnace 5, ensuring immersion consistency and plating uniformity during the tin plating process. The limiting ring 31 and the through groove on the adjusting fixed plate 63 together achieve bidirectional positioning in the axial and radial directions, limiting pipe slippage and retraction, preventing abnormal stress or displacement of the sealing element 4 due to pipe displacement, thereby reducing the risk of seal failure and molten tin overflow. The adjustable structure can also absorb thermal expansion, reduce stress concentration, extend the life of the connecting pipe 3 and the sealing element, and reduce the frequency of downtime maintenance; at the same time, installation and adjustment are simple, facilitating pipe replacement and maintenance operations, shortening maintenance time, and improving production continuity and safety. It improves process controllability and product quality, reduces operating and maintenance costs, and enhances on-site operation safety.

[0022] A locking element 32 is provided on the side of the connecting pipe 3 near the sealing element 4. One end of the inlet pipe 2 is inserted into the connecting pipe 3, and the locking element 32 is used to lock and fix the inlet pipe 2. In this embodiment, the locking element 32 effectively prevents the inlet pipe 2 from axially slipping or retracting during operation, ensuring the long-term stability of the sealing position and immersion depth, thereby maintaining the correct engagement state of the sealing element 4, avoiding sealing failure or molten solder leakage due to relative displacement, and ensuring the continuity and reliability of the atmosphere protection. By fixing the relative position of the inlet pipe 2, the mechanical impact and wear on the sealing element can be reduced, extending the service life of the sealing element 4 and the pipeline, and reducing the frequency of maintenance and replacement costs.

[0023] The sealing element 4 includes a sealing sleeve 41 and a sealing locking ring 42. The sealing sleeve 41 covers the space between the connecting pipe 3 and the inlet pipe 2. Two sealing locking rings 42 are provided, one on each side of the sealing sleeve 41, and each fixing the sealing sleeve 41 to the connecting pipe 3 and the inlet pipe 2. In this embodiment, the sealing sleeve 41 covers the space between the connecting pipe 3 and the inlet pipe 2, utilizing the compression and rebound characteristics of the elastic material to form a reliable radial and axial seal. This can compensate for minor misalignments, vibrations, and thermal expansion between the pipes, thereby preventing gas or impurities from leaking along the joint, maintaining a stable protective atmosphere in the tin furnace zone 5, and reducing the risk of oxidation and contamination. Two sealing locking rings 42 are located on both sides of the sealing sleeve 41, which tighten and press the two ends of the sleeve. This ensures that the sleeve does not slip axially or turn outward, and achieves double sealing protection through uniform pressing, thereby improving sealing reliability and pressure resistance. At the same time, the locking structure allows the seal to maintain its position under long-term high temperature and mechanical stress, extending the seal life and reducing maintenance frequency.

[0024] The solder furnace 5 is equipped with a wire assembly 51 and a heating element 52. The heating element 52 is disposed inside the solder furnace 5, and the wire assembly 51 is opposite to the outlet end of the connecting pipe 3. In this embodiment, the heating element 52 inside the solder furnace 5 can maintain a stable temperature field and good fluidity of the molten solder, ensuring that the molten solder at the outlet end of the connecting pipe 3 does not locally solidify or stick, thereby preventing pipe blockage, flow channel blockage, and the resulting backflow or overflow of molten solder, significantly reducing the risk of leakage and downtime. The opposite arrangement of the wire assembly 51 and the outlet end allows the wire to receive consistent and controllable heat treatment and guidance before and after passing through the outlet, which is beneficial for the wire surface to be uniformly wetted by the molten solder and form a stable initial plating layer, improving the plating uniformity, adhesion, and appearance quality, and reducing initial defects and scrap rate.

[0025] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A wire tin-plated sealing and leak-proof protection device, characterized in that: The device includes an inlet assembly, an inlet pipe, a connecting pipe, a sealing element, and a solder pot. The inlet assembly has a box-like structure and forms a sealed space inside. The sealed space is filled with a protective gas. One end of the inlet pipe is connected to the inlet assembly and communicates with the sealed space. One end of the connecting pipe is connected to the inlet pipe, and the other end extends to the solder pot and is immersed in the heated liquid solder in the solder pot. The sealing element is disposed between the connecting pipe and the inlet pipe and is used to seal the connection between the two.

2. The wire tin-plating sealing and leak-proof protection device according to claim 1, characterized in that: A frame is provided below the input assembly, and a support frame is provided on the frame to support the input assembly at an angle.

3. The wire tin-plating sealing and leak-proof protection device according to claim 2, characterized in that: The frame is located below the inlet assembly and has an inflation module. The inflation module is equipped with an inflation pipe, which is connected to a flexible pipe. One end of the flexible pipe is connected to the inlet pipe and is used to supply air to the inlet pipe.

4. The wire tin-plating sealing and leak-proof protection device according to claim 3, characterized in that: The flexible pipe is equipped with a tee connector, which is located at the middle end of the inlet pipe to fix the inlet pipe.

5. The wire tin-plating sealing and leak-proof protection device according to claim 1, characterized in that: A fixed bracket is provided on one side of the tin furnace, which is used to fix the connecting pipe.

6. The wire tin-plating sealing and leak-proof protection device according to claim 5, characterized in that: The fixed support includes a fixed end plate, an adjusting connecting rod, and an adjusting fixed plate. There are two fixed end plates, which are respectively set on both sides of the tin furnace. The fixed end plates are provided with adjusting grooves. The adjusting connecting rod is set on the adjusting grooves and connected to the adjusting fixed plate. The adjusting fixed plate is used to fix the connecting pipe. The adjusting connecting rod rotates to adjust the angle of the adjusting fixed plate.

7. The wire tin-plating sealing and leak-proof protection device according to claim 6, characterized in that: The connecting pipe is provided with a limiting ring, and the adjusting and fixing plate is provided with a through groove. The limiting ring is used to fix the connecting pipe to the limiting ring.

8. The wire tin-plating sealing and leak-proof protection device according to claim 1, characterized in that: A locking element is provided on the side of the connecting pipe near the sealing element. One end of the inlet pipe is inserted into the connecting pipe, and the locking element is used to lock and fix the inlet pipe.

9. The wire tin-plating sealing and leak-proof protection device according to claim 1, characterized in that: The sealing element includes a sealing sleeve and a sealing locking ring. The sealing sleeve covers the space between the connecting pipe and the inlet pipe. Two sealing locking rings are provided, which are respectively located on both sides of the sealing sleeve and fix the sealing sleeve to the connecting pipe and the inlet pipe respectively.

10. The wire tin-plating sealing and leak-proof protection device according to claim 1, characterized in that: The tin furnace is equipped with a wire assembly and a heating element. The heating element is located inside the tin furnace, and the wire assembly is opposite to the outlet end of the connecting pipe.

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