A device for tinning copper strip with fluxing agent

Abstract

The application provides a copper strip tinning device with uniform flux coating, and relates to the technical field of tinning equipment. The device comprises a pay-off mechanism, a coating mechanism, a tinning mechanism and a winding mechanism through which a copper strip passes from left to right in sequence. The coating mechanism comprises a discharge pipe and a coating element. The discharge pipe is externally connected to a feeding device. The coating element is located below the discharge pipe. The copper strip passes through the coating element and is attached to the coating element. The device uses the discharge pipe to quantitatively feed and combines the uniform wetting and contact transfer of the coating element to replace the traditional immersion coating method. The device avoids the liquid level fluctuation and uneven coating caused by the immersion of the copper strip into the liquid tank. Meanwhile, the coating element has the functions of adsorption and liquid holding. When the copper strip leaves the coating element, only a thin layer of liquid film is carried on the surface of the copper strip, which reduces the dripping of excess liquid and realizes the uniform and stable coating of the flux on the surface of the copper strip.

Description

Technical Field

[0001] This application relates to the field of tin plating equipment technology, and more specifically, to a copper strip tin plating apparatus for uniformly applying flux. Background Technology

[0002] Before tin plating, copper strips need to be coated with flux. Currently, some manufacturers use an immersion coating process. This method consumes a large amount of flux liquid, and the bath solution is easily contaminated after long-term use. Moreover, after coating, excess liquid often drips onto the surface of the copper strip, making it difficult to achieve a uniform coating effect. Summary of the Invention

[0003] The purpose of this application is to provide a copper strip tin plating apparatus for uniformly applying flux, which can solve the technical problems of high flux consumption, easy contamination of the bath solution after long-term use, and poor coating uniformity caused by excess liquid dripping onto the copper strip surface after coating in the current immersion coating method.

[0004] This application provides a copper strip tin plating apparatus for uniformly applying flux, including an unwinding mechanism, a coating mechanism, a tin plating mechanism and a winding mechanism through which the copper strip passes from left to right.

[0005] The coating mechanism includes a discharge pipe and a coating component. The discharge pipe is connected to an external feeding device, and the coating component is located below the discharge pipe. The copper strip passes through the coating component and is in contact with it.

[0006] Preferably, the system also includes a machine base, wherein the unwinding mechanism, the coating mechanism, the tin plating mechanism, and the rewinding mechanism are all disposed on the machine base.

[0007] Preferably, the coating mechanism further includes a receiving box, which is disposed on the machine base and located below the coated part. The copper strip passes above the receiving box, and the top of the receiving box is open.

[0008] Preferably, a mounting plate is fixedly disposed inside the receiving box, the mounting plate is inclined, and the coating component is fixedly disposed on the mounting plate.

[0009] Preferably, the coating is made of sponge material.

[0010] Preferably, the discharge pipe is slidably disposed on the machine base.

[0011] Preferably, the unwinding mechanism includes an unwinding roller assembly and two guide rollers. The unwinding roller assembly and the guide rollers are rotatably mounted on the machine base via bearings. One end of the copper strip is wound around the unwinding roller assembly, and the copper strip slides between the two guide rollers.

[0012] Preferably, the tin plating mechanism includes a tin furnace, a pressure roller frame, and two air nozzles. The tin furnace and the air nozzles are fixedly mounted on the machine base, and the tin furnace is filled with heated molten tin. The pressure roller frame is slidably mounted on the machine base, and the bottom of the pressure roller frame is submerged in the molten tin. The copper strip slides past the pressure roller frame and is submerged in the molten tin. The air nozzles are located to the right of the tin furnace and are positioned above and below the copper strip. The air nozzles are connected to a hot air supply device.

[0013] Preferably, the winding mechanism includes a winding roller assembly, which is rotatably mounted on the machine base via bearings, and the other end of the copper strip is wound around the winding roller assembly.

[0014] Preferably, the winding mechanism further includes a first linear module, a second linear module, a mounting frame, a take-up roller, a lower pressure roller, a take-up motor, a mounting block, and a lifting motor. The first linear module is fixedly mounted on the machine base and drives the second linear module to move left and right. The second linear module drives the mounting frame to move up and down. The take-up roller is rotatably mounted on the mounting frame via bearings. The take-up motor is fixedly mounted on the mounting frame and drives the take-up roller to rotate. The lifting motor is fixedly mounted on the mounting frame and drives the mounting block to move up and down. The lower pressure roller is rotatably mounted on the mounting block via bearings and is located directly above the take-up roller. The copper strip slides between the take-up roller and the lower pressure roller before winding.

[0015] The beneficial effects of this invention are:

[0016] This invention provides a copper strip tin plating apparatus for uniformly applying flux. This apparatus replaces the traditional immersion coating method by quantitatively supplying flux through a discharge pipe combined with uniform wetting and contact transfer of the coating component. This avoids liquid surface fluctuations and uneven coating caused by immersing the copper strip in the liquid bath. Simultaneously, the coating component adsorbs and retains the flux, so the copper strip leaves the coating component with only a thin liquid film on its surface, reducing excess liquid dripping and achieving uniform and stable flux coating on the copper strip surface. Furthermore, external feeding equipment, such as an adjustable peristaltic pump, can adjust the supply flow rate of the discharge pipe according to actual usage needs to obtain better coating results. Moreover, since the coating component only adsorbs and transfers the thin layer of flux required on the copper strip surface, compared to the immersion coating method which requires immersing the entire copper strip in the liquid bath, the amount of flux used is effectively reduced, lowering production costs. Additionally, the flux is supplied on demand, eliminating the need for long-term storage in the liquid bath and avoiding the problem of flux deterioration and contamination due to repeated use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure in some embodiments of this application;

[0019] Figure 2 This is a schematic diagram of the overall structure from another perspective in some embodiments of this application;

[0020] Figure 3 This is a schematic diagram of the overall structure from another perspective in some embodiments of this application;

[0021] Figure 4 for Figure 1 Enlarged structural diagram at point A;

[0022] Figure 5 for Figure 1 Enlarged structural diagram at point B.

[0023] The reference numerals in the attached figures are as follows:

[0024] 1. Copper strip;

[0025] 2. Unwinding mechanism; 21. Unwinding roller assembly; 22. Guide roller;

[0026] 3. Coating mechanism; 31. Discharge pipe; 32. Coated part; 33. Receiving box; 34. Mounting plate;

[0027] 4. Tin plating mechanism; 41. Tin furnace; 42. Pressure roller frame; 43. Air nozzle;

[0028] 5. Winding mechanism; 51. Winding roller assembly; 52. First linear module; 53. Second linear module; 54. Mounting frame; 55. Take-up roller; 56. Lower pressure roller; 57. Take-up motor; 58. Mounting block; 59. Lifting motor;

[0029] 6. Machine tool. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. These terms are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] It should be noted that all electrical components appearing in this application are connected to an external main controller and mains power. The main controller can be a conventional known device such as a computer for control. All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as bolts, rivets and welding that are mature in the prior art. Furthermore, the machinery, parts and equipment are all conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art. These are prior art known to those skilled in the art and will not be described in detail here.

[0037] like Figures 1 to 5 As shown, this application provides a copper strip tin plating apparatus for uniformly applying flux, including a copper strip 1 passing through an unwinding mechanism 2, a coating mechanism 3, a tin plating mechanism 4 and a winding mechanism 5 from left to right.

[0038] The coating mechanism 3 includes a discharge pipe 31 and a coating component 32. The discharge pipe 31 is connected to an external feeding device. The coating component 32 is located below the discharge pipe 31. The copper strip 1 passes through the coating component 32 and is attached to the coating component 32.

[0039] In use, the copper strip 1 to be processed is continuously released under the drive of the unwinding mechanism 2. It first passes through the coating mechanism 3. The external feeding equipment delivers flux to the discharge pipe 31. The flux flows out from the discharge port at the bottom of the discharge pipe 31 and evenly wets the coating component 32 that wraps the copper strip 1. The coating component 32 keeps in close contact with the surface of the copper strip 1. When the copper strip 1 moves continuously to the right under traction, the coating component 32 evenly transfers the adsorbed flux to the surface of the copper strip 1 to form a flux liquid film of uniform thickness. Subsequently, the copper strip 1 coated with flux enters the tin plating mechanism 4 to complete the tin plating. Finally, it is wound into a roll by the winding mechanism 5.

[0040] This device replaces the traditional immersion coating method by quantitatively supplying flux through the discharge pipe 31 and combining it with the uniform wetting and contact transfer of the coating component 32. This avoids liquid surface fluctuations and uneven coating caused by immersing the copper strip 1 into the liquid tank. At the same time, the coating component 32 has the function of adsorbing and holding flux. When the copper strip 1 leaves the coating component 32, only a thin liquid film is carried on its surface, reducing excess liquid dripping. This achieves uniform and stable flux coating on the surface of the copper strip 1. Meanwhile, external feeding equipment, such as an adjustable peristaltic pump, can also adjust the supply flow rate of the discharge pipe 31 according to actual usage needs to obtain better coating results. Moreover, the coating component 32 only adsorbs and transfers the thin layer of flux required on the surface of the copper strip 1. Compared with the immersion coating method, which requires immersing the entire copper strip 1 into the liquid tank, the amount of flux used is effectively reduced, reducing production costs. At the same time, the flux is supplied as needed, and there is no liquid tank for long-term storage, avoiding the problem of flux deterioration and contamination due to repeated use.

[0041] like Figures 1 to 5As shown, this embodiment also includes a machine base 6, on which the unwinding mechanism 2, coating mechanism 3, tin plating mechanism 4, and rewinding mechanism 5 are all mounted. The machine base 6 provides precise installation references and stable support for each mechanism, integrating the four functional units of unwinding, coating, tin plating, and rewinding onto the same machine base 6, thus reducing the equipment's footprint.

[0042] like Figures 1 to 4 As shown, in this embodiment, the coating mechanism 3 also includes a receiving box 33, which is disposed on the machine base 6 and located below the coating part 32. The copper strip 1 passes above the receiving box 33, and the top of the receiving box 33 is open.

[0043] Excess flux seeping from the coated part 32 falls into the receiving box 33 under gravity and is collected. This prevents flux from dripping onto the machine 6 or the ground and causing pollution, keeping the working environment clean. Moreover, the flux collected in the receiving box 33 can be reused in production after filtration and other treatments, further reducing flux consumption and saving production costs.

[0044] like Figure 4 As shown, in this embodiment, a mounting plate 34 is fixedly disposed inside the receiving box 33. The mounting plate 34 is inclined, and the coating component 32 is fixedly disposed on the mounting plate 34. The mounting plate 34 provides stable support for the coating component 32. Excess flux seeping from the coating component 32 slides down the inclined surface of the mounting plate 34 to the bottom of the receiving box 33, reducing the amount of flux remaining on the mounting plate 34.

[0045] In this embodiment, the coating component 32 is made of sponge material. The coating component 32 can be made of two sponges glued together, allowing the copper strip 1 to pass between the two sponges; the sponge can be fixed to the mounting plate 34 by means of adhesive or other methods; the sponge has a large number of microporous structures inside, which have good liquid absorption and retention capacity. After the flux flows down from the discharge pipe 31, it is absorbed by the sponge and evenly distributed in its internal pores. When the copper strip 1 comes into contact with the surface of the sponge, under capillary action and slight pressure, the flux is evenly transferred to the surface of the copper strip 1; the porous structure of the sponge allows it to absorb and retain a large amount of flux, ensuring a continuous and stable liquid supply, while preventing the flux from dripping quickly. Moreover, the sponge material is soft and elastic, and will not scratch the surface of the copper strip 1 when in contact with it. Furthermore, the sponge is a common industrial material, which is low in cost and can be quickly replaced, ensuring the coating effect for long-term use.

[0046] like Figures 1 to 3As shown, in this embodiment, the discharge pipe 31 is slidably mounted on the machine base 6. The mounting block 58 can slide up and down or back and forth via a sliding sleeve or sliding rod, and its position can be fixed by bolts or other means. By adjusting the position of the discharge pipe 31, the distance between the bottom discharge port of the discharge pipe 31 and the coated part 32 can be precisely controlled, thereby adjusting the degree of flux wetting of the coated part 32 and the coating thickness, thus adapting to copper strips 1 of different thicknesses and different coating amount requirements.

[0047] like Figures 1 to 4 As shown, in this embodiment, the unwinding mechanism 2 includes an unwinding roller assembly 21 and two guide rollers 22. The unwinding roller assembly 21 and the guide rollers 22 are rotatably mounted on the machine base 6 via bearings. One end of the copper strip 1 is wound on the unwinding roller assembly 21, and the copper strip 1 slides between the two guide rollers 22.

[0048] The unwinding roller assembly 21 rotates, releasing the copper strip 1 wound on it outward. After being drawn out from the unwinding roller assembly 21, the copper strip 1 passes through two guide rollers 22 and is guided by the guide rollers 22 to adjust its direction of travel, entering the coating station at the correct angle and height. This ensures that the contact posture between the copper strip 1 and the coated part 32 meets the process requirements. Moreover, the guide rollers 22 have a certain pressing and restraining effect on the copper strip 1, reducing the vertical vibration of the copper strip 1 during travel and ensuring the stability of the coating.

[0049] The unwinding roller assembly 21 includes a hand-operated expansion shaft and a magnetic powder tensioner. The hand-operated expansion shaft shrinks when rotated clockwise and expands when rotated counterclockwise. The copper strip 1 is tightened by the hand-operated expansion shaft on the machine base 6, keeping the copper strip 1 in a taut state. It is then driven by the magnetic powder tensioner to guide the unwinding of the copper strip 1. Both the hand-operated expansion shaft and the magnetic powder tensioner are conventional technologies in the field, so they will not be described in detail here.

[0050] like Figures 1 to 3 As shown, in this embodiment, the tin plating mechanism 4 includes a tin furnace 41, a pressure roller frame 42, and two air nozzles 43. The tin furnace 41 and the air nozzles 43 are fixedly mounted on the machine base 6. The tin furnace 41 is filled with heated molten tin. The pressure roller frame 42 is slidably mounted on the machine base 6, and the bottom of the pressure roller frame 42 is submerged in the molten tin. The copper strip 1 slides through the pressure roller frame 42 and is submerged in the molten tin. The air nozzles 43 are located to the right of the tin furnace 41 and are located on the upper and lower sides of the copper strip 1. The air nozzles 43 are connected to a hot air supply device.

[0051] The tin furnace 41 contains molten tin heated to a molten state and maintained at the tin plating temperature. The copper strip 1 coated with flux is drawn into the tin furnace 41, passes around the bottom of the pressure roller frame 42, and is submerged in the molten tin to complete the tin plating. Then, the copper strip 1 leaves the molten tin and is drawn upwards, passing between two blower nozzles 43. The hot air blown out by the blower nozzles 43 blows off the excess molten tin and makes the tin layer solidify evenly. The pressure roller frame 42 is made of titanium alloy, which is resistant to high temperature. The pressure roller frame 42 is made of hollow shaft roller, which is lightweight and has low resistance when the copper strip 1 passes through. The pressure roller frame 42 can slide up and down to adjust, which effectively ensures that the copper strip 1 is pressed into the molten tin for tin plating.

[0052] like Figures 1 to 3 As shown in Figure 5, in this embodiment, the winding mechanism 5 includes a winding roller assembly 51, which is rotatably mounted on the machine base 6 via bearings. The other end of the copper strip 1 is wound onto the winding roller assembly 51. The winding roller assembly 51 rotates actively to rewind the tin-plated copper strip 1 into a coil. The unwinding of the unwinding roller assembly 21 and the active winding of the winding roller assembly 51 enable the continuous release and collection of the copper strip 1 without manual intervention, thus improving production efficiency.

[0053] The take-up roller assembly 51 includes a manual expansion shaft and a brushless tension motor. The manual expansion shaft shrinks when rotated clockwise and expands when rotated counterclockwise. The copper strip 1 is tightened by the manual expansion shaft on the machine base 6 and driven by the brushless tension motor to guide the copper strip 1 to be wound up. Both the manual expansion shaft and the brushless tension motor are conventional technologies in the field, so they will not be described in detail here.

[0054] like Figures 1 to 3 As shown in Figure 5, in this embodiment, the winding mechanism 5 further includes a first linear module 52, a second linear module 53, a mounting frame 54, a take-up roller 55, a lower pressure roller 56, a take-up motor 57, a mounting block 58, and a lifting motor 59. The first linear module 52 is fixedly mounted on the machine base 6, and the first linear module 52 drives the second linear module 53 to move left and right. The second linear module 53 drives the mounting frame 54 to move up and down. The take-up roller 55 is rotatably mounted on the mounting frame 54 through a bearing. The take-up motor 57 is fixedly mounted on the mounting frame 54 and drives the take-up roller 55 to rotate. The lifting motor 59 is fixedly mounted on the mounting frame 54 and drives the mounting block 58 to move up and down. The lower pressure roller 56 is rotatably mounted on the mounting block 58 through a bearing, and the lower pressure roller 56 is located directly above the take-up roller 55. The copper strip 1 slides between the take-up roller 55 and the lower pressure roller 56 before winding.

[0055] In use, the take-up motor 57 drives the take-up roller 55 to rotate actively. The take-up roller 55 contacts the lower surface of the copper strip 1. The friction between the take-up roller 55 and the copper strip 1 provides the copper strip 1 with forward traction speed. The active traction of the take-up roller 55 and the synchronous winding of the take-up roller form a speed balance system, so that the copper strip 1 on the entire production line moves smoothly at a constant speed. The pressure roller 56 is located directly above the take-up roller 55. During the movement of the copper strip 1, it is driven by the copper strip 1 to rotate passively, applying a downward pressing force to the copper strip 1, increasing the contact wrap angle and friction between the copper strip 1 and the take-up roller 55, and ensuring the reliability of traction force transmission.

[0056] Meanwhile, the first linear module 52 can drive the second linear module 53 to move left and right according to actual usage needs, and the second linear module 53 can drive the mounting frame 54 to move up and down. The combined motion of the first linear module 52 and the second linear module 53 allows the take-up roller 55 and the pressure roller 56 to move freely in a two-dimensional plane. The copper strip 1 passes between the take-up roller 55 and the pressure roller 56. By adjusting the overall position of the take-up roller 55 and the pressure roller 56, the wrap angle and travel path length of the copper strip 1 can be changed, thereby precisely controlling the tension of the copper strip 1. Stable tension control ensures the tightness and neatness of the copper strip 1 winding on the take-up roller assembly 51, avoiding wrinkling and misalignment during the winding process.

[0057] Meanwhile, the lifting motor 59 drives the mounting block 58 and the lower pressure roller 56 to move up and down. The lifting motor 59 adopts electronic slow-speed inching control, which can achieve precise positioning of the lower pressure roller 56. The lower pressure roller 56 is moved up away from the lower take-up roller 55, so that sufficient space is formed for the operator to thread the belt when loading and unloading. After the belt is threaded, the lower pressure roller 56 is moved down close to the lower take-up roller 55, so that the copper strip 1 is tightly attached between the lower pressure roller 56 and the take-up roller 55, ensuring reliable contact between the copper strip 1 and the take-up roller 55, and achieving stable winding.

[0058] In addition, both the take-up roller 55 and the pressure roller 56 are made of PU material, which ensures sufficient friction to achieve reliable traction, and will not cause scratches or indentations on the surface of the tin-plated copper strip 1, thus ensuring the surface quality of the finished copper strip 1.

[0059] Working principle: The copper strip tin plating device for uniformly applying flux provided in this application, when in use, the unwinding roller assembly 21 rotates, releasing the copper strip 1 wound on the unwinding roller assembly 21 outward. After the copper strip 1 is drawn out from the unwinding roller assembly 21, it passes through two guide rollers 22 and is guided by the guide rollers 22 to adjust its direction of travel and enter the coating station at the correct angle and height.

[0060] An external feeding device delivers flux to the discharge pipe 31. The flux flows out from the discharge port at the bottom of the discharge pipe 31 and evenly wets the coating component 32 that wraps the copper strip 1. The coating component 32 maintains close contact with the surface of the copper strip 1. When the copper strip 1 moves continuously to the right under traction, the coating component 32 evenly transfers the adsorbed flux to the surface of the copper strip 1, forming a flux liquid film of uniform thickness. At this time, the excess flux seeping out from the coating component 32 slides down the inclined surface of the mounting plate 34 to the bottom of the receiving box 33 and is collected.

[0061] Subsequently, the copper strip 1 coated with flux is drawn into the tin furnace 41, passes around the bottom of the pressure roller frame 42 and is immersed in the molten tin, where it is tinned. Then, the copper strip 1 leaves the molten tin and is drawn upwards, passing between two blower nozzles 43. The hot air blown out by the blower nozzles 43 blows off the excess molten tin and makes the tin layer solidify evenly.

[0062] Finally, the take-up motor 57 drives the take-up roller 55 to rotate actively. The take-up roller 55 contacts the lower surface of the copper strip 1. The friction between the take-up roller 55 and the copper strip 1 provides the copper strip 1 with a forward traction speed. At the same time, the take-up roller assembly 51 rotates actively to rewind the tin-plated copper strip 1 into a coil.

[0063] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A copper strip tin plating apparatus for uniformly applying flux, characterized in that: The copper strip (1) passes through the unwinding mechanism (2), coating mechanism (3), tin plating mechanism (4) and rewinding mechanism (5) from left to right. The coating mechanism (3) includes a discharge pipe (31) and a coating component (32). The discharge pipe (31) is connected to an external feeding device. The coating component (32) is located below the discharge pipe (31). The copper strip (1) passes through the coating component (32) and is attached to the coating component (32).

2. The copper strip tin plating apparatus for uniformly applying flux according to claim 1, characterized in that: It also includes a machine base (6), on which the unwinding mechanism (2), the coating mechanism (3), the tin plating mechanism (4), and the winding mechanism (5) are all mounted.

3. The copper strip tin plating apparatus for uniformly applying flux according to claim 2, characterized in that: The coating mechanism (3) also includes a receiving box (33), which is disposed on the machine base (6) and located below the coated part (32). The copper strip (1) passes above the receiving box (33), and the top of the receiving box (33) is open.

4. The copper strip tin plating apparatus for uniformly applying flux according to claim 3, characterized in that: An installation plate (34) is fixedly installed inside the receiving box (33). The installation plate (34) is inclined, and the coating part (32) is fixedly installed on the installation plate (34).

5. The copper strip tin plating apparatus for uniformly applying flux according to claim 1, characterized in that: The coating part (32) is made of sponge material.

6. The copper strip tin plating apparatus for uniformly applying flux according to claim 2, characterized in that: The discharge pipe (31) is slidably mounted on the machine base (6).

7. The copper strip tin plating apparatus for uniformly applying flux according to claim 2, characterized in that: The unwinding mechanism (2) includes an unwinding roller assembly (21) and two guide rollers (22). The unwinding roller assembly (21) and the guide rollers (22) are rotatably mounted on the machine base (6) via bearings. One end of the copper strip (1) is wound around the unwinding roller assembly (21), and the copper strip (1) slides between the two guide rollers (22).

8. The copper strip tin plating apparatus for uniformly applying flux according to claim 2, characterized in that: The tin plating mechanism (4) includes a tin furnace (41), a pressure roller frame (42), and two blowers (43). The tin furnace (41) and the blowers (43) are fixedly mounted on the machine base (6). The tin furnace (41) is filled with heated molten tin. The pressure roller frame (42) is slidably mounted on the machine base (6), and the bottom of the pressure roller frame (42) is submerged in molten tin. The copper strip (1) slides through the pressure roller frame (42) and is submerged in molten tin. The blowers (43) are located to the right of the tin furnace (41) and are located on the upper and lower sides of the copper strip (1). The blowers (43) are connected to a hot air supply device.

9. The copper strip tin plating apparatus for uniformly applying flux according to claim 2, characterized in that: The winding mechanism (5) includes a winding roller assembly (51), which is rotatably mounted on the machine base (6) via bearings, and the other end of the copper strip (1) is wound around the winding roller assembly (51).

10. The copper strip tin plating apparatus for uniformly applying flux according to claim 9, characterized in that: The winding mechanism (5) further includes a first linear module (52), a second linear module (53), a mounting frame (54), a take-up roller (55), a pressure roller (56), a take-up motor (57), a mounting block (58), and a lifting motor (59). The first linear module (52) is fixedly mounted on the machine base (6), and the first linear module (52) drives the second linear module (53) to move left and right. The second linear module (53) drives the mounting frame (54) to move up and down. The take-up roller (55) is rotatably mounted on the machine base (6) via bearings. On the mounting frame (54), the take-up motor (57) is fixedly mounted on the mounting frame (54) and drives the take-up wheel (55) to rotate. The lifting motor (59) is fixedly mounted on the mounting frame (54) and drives the mounting block (58) to move up and down. The lower pressure wheel (56) is rotatably mounted on the mounting block (58) through a bearing, and the lower pressure wheel (56) is located directly above the take-up wheel (55). The copper strip (1) slides between the take-up wheel (55) and the lower pressure wheel (56) before winding.

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