Tinning bath with nitrogen protection for copper wire processing

Abstract

The tinning bath comprises a tin liquor pool, an opening of the tin liquor pool is upward, a slag discharge pipe is arranged at the center of the lower end of the tin liquor pool, a heating sleeve is sleeved outside the lower end of the tin liquor pool, and the slag discharge pipe penetrates through the interior of the lower end of the heating sleeve downwards. A plurality of guide pipes are communicated with the upper sides of the left end and the right end of the tin liquid pool, and the left end and the right end of the tin liquid pool are connected with copper wire boxes with upward openings through the guide pipes. According to the copper wire tinning device, oxidation reaction of copper wires and tin liquid in the tinning process is effectively inhibited, meanwhile, circular flow of nitrogen is achieved through the axial flow fan and the heat dissipation circulating pipe, the tinned copper wires are rapidly cooled, impurities on the surfaces of the copper wires are removed through the brushing cylinder before the copper wires are tinned, and therefore the copper wire tinning quality and the copper wire tinning efficiency are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of copper wire processing, specifically relating to a tin plating bath for copper wire processing with nitrogen protection. Background Technology

[0002] In the copper wire processing industry, tin plating is a crucial step in improving the conductivity, oxidation resistance, and weldability of copper wires. Traditional tin plating processes typically employ open tin baths, where copper wires are immersed in high-temperature molten tin to form a tin plating layer. However, the open environment easily leads to contact between the copper wires and the molten tin and oxygen in the air, causing an oxidation reaction that affects the uniformity and adhesion of the tin plating layer. Furthermore, the drawing and winding of copper wires in traditional processes largely relies on manual operation, resulting in inconsistent tin plating layer thickness. In addition, uneven heating of the molten tin and incomplete removal of impurities further degrade the quality of the tin plating.

[0003] To address the aforementioned technical deficiencies, this patent proposes a tin plating bath with nitrogen protection for copper wire processing. Through an innovative nitrogen protection system, automatic traction and winding mechanism, uniform heating and stirring system, cooling and impurity cleaning system, and sealing and modular design, it comprehensively improves the efficiency and quality of the tin plating process. Through a series of innovative designs, it provides a highly efficient and stable copper wire tin plating solution to meet the modern industrial demand for high-quality tin-plated copper wire. Utility Model Content

[0004] The purpose of this invention is to provide a tin plating bath with nitrogen protection for copper wire processing, so as to solve the problem mentioned in the background art that the traditional tin plating bath adopts open tin plating, which easily forms an oxide layer and reduces the tin plating quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tin plating tank for copper wire processing with nitrogen protection, comprising a tin bath with an upward-facing opening and a slag discharge pipe at the center of its lower end. A heating sleeve is fitted around the lower end of the tin bath, and the slag discharge pipe extends downward through the lower end of the heating sleeve. Multiple guide pipes are connected to the upper sides of both the left and right ends of the tin bath. Copper wire boxes with upward-facing openings are connected to both the left and right ends of the tin bath through multiple guide pipes. Sealing caps are provided at the upper ends of the tin bath and the two copper wire boxes. Sealing rings are provided between the three sealing caps and the tin bath and the two copper wire boxes, and they are connected to the tin bath and the two copper wire boxes through studs and fixing knobs. Handles are provided at the upper ends of the three sealing caps. Support legs are fixedly connected to the four corners of the lower end of the tin bath and the two copper wire boxes.

[0006] Preferably, multiple sets of support seats are fixedly connected to the inner wall of the lower end of the copper wire box, and each set of support seats consists of two support frames. Copper wire reels are rotatably connected inside the multiple sets of support seats. A traction gear shaft is provided at the right end of the multiple copper wire reels on the right side, and the multiple copper wire reels on the right side mesh with the traction gear shaft and are rotatably connected to the traction gear shaft.

[0007] Preferably, a traction motor is rotatably connected to the rear end of the traction gear shaft, and the motor is fixedly connected to the outer wall of the rear end of the copper wire box on the right side. Copper wire blanks are wound around the outside of multiple copper wire spools. Traction shafts are rotatably connected to the inner sides of the upper left and right ends of the tin bath and the lower side of the copper wire box near the tin bath. An immersion shaft is rotatably connected to the center of the tin bath.

[0008] Preferably, multiple limiting grooves are provided on the outer walls of the multiple traction shafts and immersion shafts, and the copper wire blank is rolled and connected inside the multiple limiting grooves, and passes through the molten tin pool and the guide tube through the multiple traction shafts and immersion shafts.

[0009] Preferably, an air inlet pipe is connected to the upper right corner of the front end of the copper wire box on the right side, an axial fan is connected to the lower left corner of the front end of the copper wire box on the right side, and a filter cartridge is connected to the lower right corner of the front end of the copper wire box on the left side.

[0010] Preferably, a heat dissipation circulation pipe is connected between the axial fan and the filter cartridge. The heat dissipation circulation pipe consists of an internal connecting pipe and an external heat sink. A cleaning pipe is provided in the middle of the multiple guide pipes on the left side.

[0011] Preferably, a cleaning brush cylinder is fixedly connected inside the cleaning tube. The cleaning brush cylinder consists of an outer limiting cylinder and an inner cleaning brush, and a copper wire blank passes through the inside of the cleaning brush. Multiple stirring plates are fixedly connected to the outside of the immersion shaft.

[0012] Compared with the prior art, this utility model provides a tin plating bath with nitrogen protection for copper wire processing, which has the following advantages:

[0013] 1. This utility model adopts a fully enclosed design and creates a low-oxygen or oxygen-free environment by filling the tin plating bath and copper wire box with nitrogen, which effectively inhibits the oxidation reaction of copper wire and tin liquid during the tin plating process. At the same time, the nitrogen is circulated by axial flow fan and heat dissipation circulation pipe to quickly cool the tin-plated copper wire. Furthermore, impurities on the surface of the copper wire are removed by a cleaning brush before tin plating, thereby improving the quality and efficiency of copper wire tin plating.

[0014] 2. The tin plating tank and copper wire box of this utility model are sealed with a sealing cover and a sealing ring to ensure the airtightness of the device and prevent external contaminants from entering. At the same time, the sealing cover is designed to be detachable, which facilitates the installation, maintenance and cleaning of the equipment, as well as the insertion, threading and removal of copper wire.

[0015] 3. This utility model uses a traction motor and traction gear shaft to drive the copper wire winding shaft, realizing automatic traction and winding of the copper wire. This not only improves production efficiency but also avoids errors in manual operation. At the same time, the stirring plate rotates with the immersion shaft during the copper wire traction process, promoting the flow and mixing of the molten tin, ensuring uniform temperature distribution of the molten tin, avoiding local overheating or undercooling, making the tin plating layer more uniform, and further improving the tin plating quality.

[0016] 4. This utility model uses circulating nitrogen to carry away the impurities brushed off by the cleaning cylinder, and filters the carried-out impurities through the filter cylinder to ensure the purity of the nitrogen. At the same time, the circulating nitrogen is returned and cooled through the heat dissipation circulation pipe to ensure that the nitrogen can continuously cool the tin plating layer. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the copper wire tin plating tank of this utility model.

[0018] Figure 2 This is a three-dimensional cross-sectional view of the copper wire tin plating tank of this utility model.

[0019] Figure 3 This is a schematic diagram of the copper wire blank connection structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the copper wire box connection structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the cleaning pipe connection structure of this utility model.

[0022] Figure 6 This is a schematic diagram of the molten tin pool connection structure of this utility model.

[0023] In the diagram: 1. Solder bath; 2. Heating jacket; 3. Guide tube; 4. Copper wire box; 5. Sealing cover; 6. Support leg; 7. Support base; 8. Copper wire reel; 9. Copper wire blank; 10. Traction shaft; 11. Immersion shaft; 12. Air inlet pipe; 13. Axial flow fan; 14. Filter cartridge; 15. Heat dissipation circulation pipe; 16. Cleaning pipe; 17. Cleaning brush; 18. Stirring plate; 19. Traction gear shaft. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides, for example Figures 1-6 The diagram shows a tin plating tank with nitrogen protection for copper wire processing, comprising a tin bath 1 with an upward-facing opening and a slag discharge pipe at the center of its lower end. A heating jacket 2 is fitted around the lower end of the tin bath 1, with the slag discharge pipe extending downwards into the lower end of the heating jacket 2. Multiple guide pipes 3 are connected to the upper sides of both ends of the tin bath 1, and copper wire boxes 4 with upward-facing openings are connected to both ends of the tin bath 1 via the guide pipes 3. Sealing covers 5 are provided at the upper ends of the tin bath 1 and the two copper wire boxes 4. Sealing rings are provided between the three sealing covers 5 and the tin bath 1 and the two copper wire boxes 4, and they are connected to the tin bath 1 and the two copper wire boxes 4 via studs and fixing knobs. Handles are provided at the upper ends of the three sealing covers 5. Support legs 6 are fixedly connected to the four corners of the lower ends of the tin bath 1 and the two copper wire boxes 4. Multiple sets of support seats 7 are fixedly connected to the inner wall, and each set of support seats 7 consists of two support frames. Copper wire spools 8 are rotatably connected inside the multiple sets of support seats 7. Copper wire blanks 9 are wound around the outside of the multiple copper wire spools 8. During the tin plating process of the copper wire blanks 9, the sealing cover 5 at the top of the tin bath 1 and the two copper wire boxes 4 are opened. Multiple copper wire spools 8 with copper wire blanks 9 wound around them are placed into the copper wire box 4 on the left through the multiple sets of support seats 7. Multiple copper wire spools 8 without copper wire blanks 9 wound around them are placed into the copper wire box 4 on the right. Multiple copper wire blanks 9 are inserted into the tin bath 1 through multiple guide tubes 3 on the left, and then inserted into the copper wire box 4 on the right through multiple guide tubes 3 on the right and wound around the outside of the multiple copper wire spools 8 on the right, so that multiple copper wire blanks 9 are tin-plated inside the tin bath 1.

[0026] Preferably, traction shafts 10 are rotatably connected to the inner sides of the upper left and right ends of the tin bath 1 and the lower side of the copper wire box 4 near the tin bath 1. An immersion shaft 11 is rotatably connected to the center of the tin bath 1. Multiple limiting grooves are provided on the outer walls of the multiple traction shafts 10 and immersion shafts 11. Copper wire blanks 9 are rolled and connected inside the multiple limiting grooves and pass through the tin bath 1 and the guide tube 3 through the multiple traction shafts 10 and immersion shafts 11. During the process of the copper wire blanks 9 wrapped around the outside of the multiple copper wire spools 8 on the left passing through the tin bath 1 and connecting with the multiple copper wire spools 8 on the right, the multiple copper wire blanks 9 are limited and guided by the limiting grooves on the outer walls of the multiple traction shafts 10 and immersion shafts 11. This ensures that the copper wire blanks 9 can pass through the center of the guide tube 3 without rubbing against the inner walls of the tin bath 1, the guide tube 3 and the copper wire box 4, and also guides the multiple copper wire blanks 9 through the tin liquid in the tin bath 1 for tin plating.

[0027] Preferably, the right end of the multiple copper wire reels 8 on the right side is provided with a traction gear shaft 19, and the multiple copper wire reels 8 on the right side mesh with the traction gear shaft 19 and are rotatably connected to the traction gear shaft 19. The rear end of the traction gear shaft 19 is rotatably connected to a traction motor, and the motor is fixedly connected to the rear outer wall of the copper wire box 4 on the right side. An air inlet pipe 12 is connected to the upper right corner of the front end of the copper wire box 4 on the right side. After the copper wire blanks 9 wound around the outside of the multiple copper wire reels 8 on the left side pass through the inside of the molten tin pool 1 and are connected to the multiple copper wire reels 8 on the right side, the molten tin is poured into the molten tin pool 1, and the heating jacket 2 is turned on to heat and keep the molten tin warm. Then, the sealing caps 5 at the top of the molten tin pool 1 and the copper wire box 4 on the right side are covered, and nitrogen gas is injected into the molten tin pool 1 and the two copper wire boxes 4 through the air inlet pipe 12, so that the air in the molten tin pool 1 and the two copper wire boxes 4 is expelled from the top of the copper wire box 4 on the left side. The opening at the end discharges nitrogen, creating a low-oxygen or oxygen-free environment. As nitrogen is continuously introduced, the oxygen content in the tin bath 1 and the two copper wire boxes 4 gradually decreases. When a certain low oxygen concentration is reached, the sealing cover 5 at the top of the left copper wire box 4 is closed, making the entire device sealed. This effectively inhibits the oxidation reaction of copper wire and tin during the tin plating process. Then, the traction motor is started. The traction motor drives multiple copper wire reels 8 on the right side to rotate inside each set of support seats 7 through the traction gear shaft 19. Multiple copper wire blanks 9 are pulled from the outside of the multiple copper wire reels 8 on the left side to the outside of the multiple copper wire reels 8 on the right side. During the traction process, they are tin-plated through the tin liquid inside the tin bath 1. During the tin plating process, the heating jacket 2 can keep the tin liquid temperature stable, so that the tin liquid can adhere well to the surface of the copper wire and form a uniform tin plating layer.

[0028] Preferably, an axial fan 13 is connected to the lower left corner of the front end of the copper wire box 4 on the right, and a filter cartridge 14 is connected to the lower right corner of the front end of the copper wire box 4 on the left. A heat dissipation circulation pipe 15 is connected between the axial fan 13 and the filter cartridge 14. The heat dissipation circulation pipe 15 consists of an internal connecting pipe and an external heat sink. During the tin plating process, the two copper wire boxes 4 are connected to the inside of the tin bath 1 through multiple guide pipes 3, and the two copper wire boxes 4 are connected to each other through the axial fan 13, the filter cartridge 14 and the heat dissipation circulation pipe 15. When the axial fan 13 is turned on, the axial fan 13 drives nitrogen to circulate in the tin bath 1 and the two copper wire boxes 4. The nitrogen flows from the copper wire box 4 on the right to the inside of the tin bath 1, and then from the tin bath 1 to the inside of the copper wire box 4 on the left. Finally, it flows back to the inside of the copper wire box 4 on the right through the axial fan 13, the filter cartridge 14 and the heat dissipation circulation pipe 15.

[0029] During this process, when nitrogen passes through the multiple guide tubes 3 on the left, it can cool the tin plating layer on the outside of the copper wire. When the nitrogen circulates into the heat dissipation circulation tube 15, it can be cooled by the heat sink on the outside of the heat dissipation circulation tube 15, ensuring that the temperature of the nitrogen circulating back into the copper wire box 4 on the left is reduced, and ensuring that the nitrogen can continuously cool the tin plating layer.

[0030] Preferably, a cleaning tube 16 is provided in the middle of each of the multiple guide tubes 3 on the left side. A cleaning brush cylinder 17 is fixedly connected inside the cleaning tube 16. The cleaning brush cylinder 17 consists of an outer limiting cylinder and an inner cleaning brush. The copper wire blank 9 passes through the cleaning brush. During the nitrogen circulation, when the copper wire blank 9 passes through the cleaning brush in the center of the cleaning brush cylinder 17, the cleaning brush can clean the impurities on the outside of the copper wire blank 9. The impurities that are cleaned off can be carried into the copper wire box 4 on the left side by the circulating nitrogen and into the filter cylinder 14 for impurity filtration. This ensures that impurities will not enter the molten tin along with the copper wire blank 9 and nitrogen. This can prevent impurities from entering the molten tin and affecting the quality of the molten tin, and also prevent impurities from affecting the connection between the copper wire blank 9 and the tin plating layer, thereby improving the tin plating quality.

[0031] Preferably, multiple stirring plates 18 are fixedly connected to the outside of the immersion shaft 11. During the process of the copper wire blank 9 passing through the inside of the tin bath 1, the copper wire blank 9 drives the immersion shaft 11 to rotate through the limiting groove, and drives the multiple stirring plates 18 to rotate around the immersion shaft 11, so that the tin liquid inside the tin bath 1 can be stirred by the multiple stirring plates 18, so that the heating jacket 2 can heat the tin liquid evenly, further improving the tin plating quality.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tin plating bath for copper wire processing with nitrogen protection, characterized in that, The tin bath (1) is open upwards and has a slag discharge pipe at the center of its lower end. A heating sleeve (2) is fitted around the lower end of the tin bath (1) and the slag discharge pipe extends downwards through the lower end of the heating sleeve (2). Multiple guide pipes (3) are connected to the upper sides of both the left and right ends of the tin bath (1). Copper wire boxes (4) with open sides are connected to both the left and right ends of the tin bath (1) through multiple guide pipes (3). Sealing caps (5) are provided at the upper ends of the tin bath (1) and the two copper wire boxes (4). Sealing rings are provided between the three sealing caps (5) and the tin bath (1) and the two copper wire boxes (4), and they are connected to the tin bath (1) and the two copper wire boxes (4) through studs and fixing knobs. Handles are provided at the upper ends of the three sealing caps (5). Support legs (6) are fixedly connected at the four corners of the lower end of the tin bath (1) and the two copper wire boxes (4).

2. The tin plating bath for copper wire processing with nitrogen protection according to claim 1, characterized in that: Multiple sets of support seats (7) are fixedly connected to the lower inner walls of the two copper wire boxes (4), and each set of support seats (7) consists of two support frames. Copper wire reels (8) are rotatably connected inside the multiple sets of support seats (7). The right end of the multiple copper wire reels (8) on the right side is provided with a traction gear shaft (19), and the multiple copper wire reels (8) on the right side mesh with the traction gear shaft (19) and are rotatably connected to the traction gear shaft (19).

3. A tin plating bath with nitrogen protection for copper wire processing according to claim 2, characterized in that: The rear end of the traction gear shaft (19) is rotatably connected to a traction motor, and the motor is fixedly connected to the rear end outer wall of the copper wire box (4) on the right side. Copper wire blanks (9) are wound around the outside of multiple copper wire spools (8). Traction shafts (10) are rotatably connected to the interior of the upper left and right sides of the tin bath (1) and the lower side of the copper wire box (4) near the tin bath (1). An immersion shaft (11) is rotatably connected to the center of the tin bath (1).

4. A tin plating bath with nitrogen protection for copper wire processing according to claim 3, characterized in that: Multiple limiting grooves are provided on the outer walls of the multiple traction shafts (10) and immersion shafts (11), and the copper wire blank (9) is rolled and connected inside the multiple limiting grooves, and passes through the tin bath (1) and guide tube (3) through the multiple traction shafts (10) and immersion shafts (11).

5. A tin plating bath with nitrogen protection for copper wire processing according to claim 4, characterized in that: An air inlet pipe (12) is connected to the upper right corner of the front end of the copper wire box (4) on the right side, an axial flow fan (13) is connected to the lower left corner of the front end of the copper wire box (4) on the right side, and a filter cartridge (14) is connected to the lower right corner of the front end of the copper wire box (4) on the left side.

6. A tin plating bath with nitrogen protection for copper wire processing according to claim 5, characterized in that: A heat dissipation circulation pipe (15) is connected between the axial fan (13) and the filter cartridge (14). The heat dissipation circulation pipe (15) consists of an internal connecting pipe and an external heat sink. A cleaning pipe (16) is provided in the middle of the multiple guide pipes (3) on the left side.

7. A tin plating bath with nitrogen protection for copper wire processing according to claim 6, characterized in that: The cleaning tube (16) is fixedly connected to a cleaning brush cylinder (17), which consists of an outer limiting cylinder and an inner cleaning brush. The copper wire blank (9) passes through the cleaning brush. The immersion shaft (11) is fixedly connected to a plurality of stirring plates (18).

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