A tin bath of a copper strip tinning pilot plant

Abstract

The utility model discloses a tin bath of copper strip tin plating pilot plant device relates to copper strip tin plating pilot technology field, aims at solving the problem of tin liquid heating uniformity of prior art is poor, and the inconvenient replacement and recovery and utilization rate is low, adopts the technical scheme, including the box and the tin pot, and the box is the shell of top penetration, and the top of box is equipped with the tin pot, is equipped with the heating furnace of tin pot in the box, and the heating furnace heats tin liquid in tin pot, the left side of tin pot is equipped with handle, and the right side of tin pot is hinged with the box, and the handle can be pulled, can make tin pot rotate around and hinge with the box, and the tin pot is hinged on the box, and is equipped with handle, can easily rotate and pour out tin liquid, and cooperates with the liquid tank and the flow guide nozzle, realizes tin liquid no leakage and loss recovery, sets up four groups of lugs at the corner of tin pot, and the hoisting maintenance of tin pot is convenient, and the top of tin pot still is equipped with the guide roller of copper strip direction, and the right side of guide roller still is equipped with the compression assembly.

Description

Technical Field

[0001] This utility model relates to the field of pilot-scale copper strip tin plating technology, specifically a tin bath for a pilot-scale copper strip tin plating device. Background Technology

[0002] As the core component of the pilot plant, the tin bath plays an important role in carrying molten tin, heating, and guiding copper strip tin plating. Its structural design and performance have a decisive impact on the tin plating quality (such as coating uniformity, no bubbles, thickness stability, etc.), ease of operation, and molten tin utilization.

[0003] Traditional tin pots are mostly cylindrical with opening and bottom dimensions close together, requiring a large amount of molten tin to meet tinning requirements. This results in a large amount of tin material input, which significantly increases testing costs, especially during pilot-scale testing (where molten tin formulas are frequently changed). Tin pots are also mostly fixed structures, requiring workers to use tin spoons to scoop out the molten tin, which is cumbersome and easily leads to molten tin residue and waste. In addition, traditional tin baths often use planar heating, which is incompatible with the shape of the tin pot, resulting in large local temperature deviations in the molten tin. This can easily lead to problems such as uneven plating thickness, incomplete wetting, and poor adhesion. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a tin bath for a copper strip tin plating pilot device, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model discloses a tin bath for a copper strip tin plating pilot plant. The technical solution adopted includes a box and a tin pot. The box is a shell with a transparent top, and the tin pot is installed on the top of the box. The box is equipped with a heating furnace for heating the molten tin in the tin pot; The solder pot has a handle on its left side and is hinged to the box body on its right side. Pulling the handle allows the solder pot to rotate around the hinge point with the box body. With the solder pot hinged to the box body and equipped with a handle, it can be easily rotated to pour out the molten solder. With the help of the pouring tank and guide nozzle, the molten solder can be recovered without leakage. Four sets of lifting lugs are provided at the corners of the solder pot for easy hoisting and maintenance. The top of the tin pot is also provided with a guide roller for guiding the copper strip, and a pressing assembly is provided on the right side of the guide roller.

[0006] As a preferred technical solution of this utility model, the tin pot is square-pyramidal, and the structure of the heating furnace is adapted to the tin pot. The square-pyramidal tin pot has a small bottom and a large opening, which can reduce the amount of molten tin and reduce the pilot-scale cost while meeting the requirements of copper strip tin plating. It also has a large heating area, high heating efficiency, and more uniform temperature distribution of molten tin.

[0007] As a preferred technical solution of this utility model, the heating furnace includes a heating furnace shell and a heating wire. The heating furnace shell is installed in the box, and a heating furnace insulation layer and the heating wire are arranged sequentially between the heating furnace shell and the tin pot.

[0008] As a preferred technical solution of this utility model, the box is also equipped with a heating furnace thermal resistor for detecting the internal temperature of the heating furnace, and the tin pot is equipped with a tin liquid thermal resistor for detecting the temperature of the tin liquid. By using a square cone-shaped tin pot in conjunction with the heating furnace and matching the heating furnace thermal resistor, the heating temperature of the heating furnace can be monitored in real time, making the heating area of ​​the tin liquid more uniform and avoiding plating defects caused by local temperature differences.

[0009] As a preferred embodiment of this utility model, the right side of the tin pot is also provided with a pouring trough and a guide nozzle for guiding the molten tin.

[0010] As a preferred embodiment of this utility model, the tin pot is further provided with hanging lugs, and there are four sets of hanging lugs, which are evenly distributed at the corners of the tin pot.

[0011] In a preferred embodiment of this invention, the guide roller is driven by a first electro-hydraulic cylinder, and the telescopic end of the first electro-hydraulic cylinder is rotatably connected to the guide roller via a first mounting bracket.

[0012] As a preferred technical solution of this utility model, the clamping assembly includes a clamping roller and a second electro-hydraulic cylinder. The telescopic end of the second electro-hydraulic cylinder is rotatably connected to the clamping roller through a second mounting bracket. The clamping roller is provided in two sets, and the copper strip passes through the two sets of clamping rollers.

[0013] Compared with the prior art, the beneficial effects of this utility model are: by using a square cone-shaped tin pot in conjunction with a heating furnace, and by adapting the heating furnace's thermal resistance, the heating temperature of the heating furnace can be monitored in real time, making the tin liquid more uniformly heated and avoiding plating defects caused by local temperature differences.

[0014] The solder pot is hinged to the box and equipped with a handle, which can be easily rotated to pour out the molten solder. With the help of the pouring tank and guide nozzle, the molten solder can be recovered without leakage. Four sets of lifting lugs are set at the corners of the solder pot for easy hoisting and maintenance.

[0015] Using a square-pyramidal tin pot with a small bottom and a large opening can reduce the amount of molten tin added and lower pilot-scale costs while still meeting the tinning requirements of copper strips. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded view of the internal structure of the box body of this utility model; Figure 3 This is a sectional view of the internal structure of the box body of this utility model; Figure 4 This is a schematic diagram of the box body and tin pot structure of this utility model; Figure 5 This is a partial structural diagram of the present invention.

[0017] In the diagram: 1. Box body; 2. Tin pot; 3. Copper strip; 4. First electro-hydraulic cylinder; 5. Second electro-hydraulic cylinder; 6. Tin liquid thermal resistor; 7. Handle; 8. Lifting lug; 9. Drain nozzle; 10. Heating furnace shell; 11. Heating furnace insulation layer; 12. Heating furnace thermal resistor; 13. Second mounting bracket; 14. Pressure roller; 15. Guide roller; 16. First mounting bracket; 17. Liquid pouring tank; 18. Heating wire. Detailed Implementation

[0018] 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. Example 1

[0019] like Figures 1 to 5 As shown, this utility model discloses a tin bath for a copper strip tin plating pilot plant. The technical solution adopted includes a box body 1 and a tin pot 2. The box body 1 is a shell with a transparent top, and the tin pot 2 is installed on the top of the box body 1. The tin pot 2 is square-pyramidal. A heating furnace thermal resistor 12 for detecting the internal temperature of the heating furnace is also installed on the box body 1.

[0020] The housing 1 is equipped with a heating furnace for heating the molten tin in the tin pot 2; the heating furnace is adapted to the structure of the tin pot 2.

[0021] The heating furnace includes a heating furnace shell 10 and heating wires 18. The heating furnace shell 10 is made of Q235 steel and is installed inside the housing 1. A heating furnace insulation layer 11 and the heating wires 18 are arranged sequentially between the heating furnace shell 10 and the tin pot 2. The three-sided wrapped heating wires 18 arrangement structure allows the molten tin to be fully and evenly heated. The tin pot 2 is equipped with a molten tin thermal resistor 6 for detecting the temperature of the molten tin.

[0022] The heating furnace has a built-in silicon controlled rectifier temperature control module, which monitors the temperature of the molten tin in real time through the furnace thermal resistor 12 to ensure that the temperature fluctuation is ≤2℃, meeting the requirements for continuous operation.

[0023] The left side of the tin pot 2 is provided with a handle 7, and the right side of the tin pot 2 is hinged to the box body 1. Pulling the handle 7 allows the tin pot 2 to rotate around the hinge point with the box body 1. The right side of the tin pot 2 is also provided with a pouring groove 17 and a guide nozzle 9 for draining molten tin, which facilitates the discharge of molten tin from the tin pot 2. The tin pot 2 is also provided with lifting lugs 8, and there are four sets of lifting lugs 8, which are evenly distributed at the corners of the tin pot 2.

[0024] The top of the tin pot 2 is also provided with a guide roller 15 for guiding the copper strip 3, and a pressing component is also provided on the right side of the guide roller 15.

[0025] The guide roller 15 is driven by the first electro-hydraulic cylinder 4, and the telescopic end of the first electro-hydraulic cylinder 4 is rotatably connected to the guide roller 15 through the first mounting bracket 16.

[0026] The surface of the guide roller 15 inside the tin pot 2 is coated with ceramic. In conjunction with the running path of the copper strip 3 inside the tin pot 2, the roller surface angle between the copper strip 3 and the guide roller 15 is dynamically adjusted by the PLC control center to ensure that the contact surface between the copper strip 3 and the molten tin is flat and to reduce plating bubbles.

[0027] The clamping assembly includes a clamping roller 14 and a second electro-hydraulic cylinder 5. The telescopic end of the second electro-hydraulic cylinder 5 is rotatably connected to the clamping roller 14 via a second mounting bracket 13. The clamping roller 14 is provided in two sets, and the copper strip 3 passes through the two sets of clamping rollers 14.

[0028] After the copper strip 3 is tinned in the tin pot 2, it is used in conjunction with the pressure roller 14 and the second electro-hydraulic cylinder 5. The stroke of the cylinder can be adjusted by the PLC control center to adjust the pressure between the copper strip 3 and the pressure roller 14 to improve the uniformity of the plating surface and adjust the plating thickness.

[0029] The working principle of this utility model: Connect the device to power and start the heating furnace. The heating wire 18 is energized to generate heat, which heats the molten solder in the tin pot 2 through heat conduction. The molten solder resistance 6 detects the temperature of the molten solder in real time, and the heating furnace resistance 12 detects the internal temperature of the heating furnace simultaneously. After the copper strip 3 is drawn out by the unwinding mechanism, it is first guided by the guide roller 15. The PLC control center controls the extension and retraction of the first electro-hydraulic cylinder 4 to adjust the positional relationship between the guide roller 15 and the tin pot 2, thereby controlling the contact area between the copper strip 3 and the molten tin in the tin pot 2 to complete the hot-dip tin plating. After tin plating, the copper strip 3 is drawn out from the molten tin and enters between two sets of pressing rollers 14. The PLC control center controls the extension and retraction of the second electro-hydraulic cylinder 5 according to the plating thickness, adjusts the pressure of the pressing rollers 14 on the copper strip 3 (the greater the pressure, the thinner the plating), squeezes out excess molten tin, and at the same time ensures that the plating thickness is uniform. When it is necessary to replace the solder, turn off the heating furnace, pull the handle 7 to make the solder pot 2 rotate around the hinge shaft, and the solder flows to the pouring tank 17 under the action of gravity, and flows into the recycling container through the guide nozzle 9; after the replacement is completed, push the handle 7 in the opposite direction to reset the solder pot 2, add new solder and start heating.

[0030] The circuits and mechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. They are common knowledge.

[0031] Components not described in detail in this article are existing technologies.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tin bath for a copper strip tinning pilot plant characterized by: Includes a box (1) and a tin pot (2), wherein the box (1) is a shell with a transparent top, and the tin pot (2) is installed on the top of the box (1). The box (1) is equipped with a heating furnace for heating the tin pot (2), and the heating furnace heats the molten tin in the tin pot (2); The tin pot (2) has a handle (7) on its left side and the right side of the tin pot (2) is hinged to the box body (1). Pulling the handle (7) will allow the tin pot (2) to rotate around the hinge point with the box body (1). The top of the tin pot (2) is also provided with a guide roller (15) for guiding the copper strip (3), and a pressing component is also provided on the right side of the guide roller (15).

2. The tin bath of a pilot plant for copper strip tinning according to claim 1, characterized in that: The tin pot (2) is square-pyramidal, and the heating furnace is adapted to the structure of the tin pot (2).

3. The tin bath of the copper strip tin plating pilot plant according to claim 2, characterized in that: The heating furnace includes a heating furnace shell (10) and a heating wire (18). The heating furnace shell (10) is installed inside the box (1). A heating furnace insulation layer (11) and the heating wire (18) are arranged sequentially between the heating furnace shell (10) and the tin pot (2).

4. A tin bath for a pilot plant for copper strip tinning according to claim 1 or 2 or 3, characterized in that: The box (1) is also equipped with a heating furnace thermal resistor (12) for detecting the internal temperature of the heating furnace, and the tin pot (2) is equipped with a tin liquid thermal resistor (6) for detecting the temperature of the tin liquid.

5. The tin bath of a pilot plant for copper strip tinplating according to claim 1, characterized in that: The right side of the tin pot (2) is also provided with a liquid pouring tank (17) and a guide nozzle (9) for guiding the molten tin.

6. The tin bath of a copper strip tin plating pilot plant according to claim 1 or 5, characterized in that: The tin pot (2) is also provided with hanging lugs (8), and there are four sets of hanging lugs (8), which are evenly distributed at the corners of the tin pot (2).

7. The tin bath of a pilot plant for copper strip tinplating according to claim 1, characterized in that: The guide roller (15) is driven by the first electro-hydraulic cylinder (4), and the telescopic end of the first electro-hydraulic cylinder (4) is rotatably connected to the guide roller (15) through the first mounting bracket (16).

8. The tin bath of the copper strip tin plating pilot plant according to claim 1, characterized in that: The clamping assembly includes a clamping roller (14) and a second electro-hydraulic cylinder (5). The telescopic end of the second electro-hydraulic cylinder (5) is rotatably connected to the clamping roller (14) via a second mounting bracket (13). The clamping roller (14) is provided in two sets, and the copper strip (3) passes between the two sets of clamping rollers (14).

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