A tin coating apparatus

Abstract

This utility model provides a tin coating device, comprising: a tin furnace bath, the tin furnace bath comprising: a furnace body, the furnace body comprising a accommodating cavity, a furnace cover capable of covering the accommodating cavity, the furnace cover having a cover opening, a first inlet, and a second inlet, the first inlet for passing through solder bars, and the second inlet for passing through solder ribbon; a cover body, the cover body comprising: a cover plate capable of covering the cover opening, the cover plate having a first outlet for passing through solder ribbon; a first lifting assembly fixedly connected to the cover plate, the first lifting assembly capable of driving the cover plate closer to or away from the cover opening; and an air knife assembly disposed at the first outlet, the air knife assembly comprising an air knife. The tin coating device provided by this utility model can reduce the oxidation problem of molten tin, improve the tin coating quality, and reduce solder loss.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic solder ribbon manufacturing technology, and in particular relates to a tin coating equipment. Background Technology

[0002] Currently, traditional hot-dip tin plating furnaces are all open structures with simple equipment structures. A large area of ​​molten tin is exposed to the air, and the surface solder is easily oxidized. Especially after using low-temperature solder, the presence of bismuth greatly increases the rate of solder oxidation. In addition, the airflow blown by the air knife agitates the surface of the molten tin, requiring frequent cleaning of slag, which further exacerbates the oxidation loss of the solder and affects the surface quality of the ultra-low temperature solder strip. Summary of the Invention

[0003] To address at least one technical problem in the prior art, this utility model provides a tin-coating device that improves tin-coating quality and reduces solder loss. To achieve the above technical objectives, the technical solution adopted by this utility model is as follows: This utility model embodiment provides a tin coating device, including: The tin furnace includes: Furnace body, the furnace body including a receiving cavity, A furnace lid that can cover the accommodating cavity, the furnace lid having a cover opening, a first inlet and a second inlet, the first inlet for passing through solder bars and the second inlet for passing through solder ribbons; The cover body includes: A cover plate that can cover the opening, and the cover plate is provided with a first outlet for the welding strip to pass through; A first lifting component is fixedly connected to the cover plate, and the first lifting component can drive the cover plate to move closer to or away from the cover opening; An air knife assembly is located at the first outlet, and the air knife assembly includes an air knife.

[0004] Furthermore, the furnace cover also includes a protrusion, which is provided with the cover opening, the first inlet, and the second inlet. And / or, the first inlet is further provided with a screw cap, which covers the first inlet.

[0005] Furthermore, a pressure plate is provided on the side of the cover plate near the opening. The side of the pressure plate near the opening is semi-circular and has a curved groove, which extends along the edge of the pressure plate.

[0006] Furthermore, the cover also includes a sickle holder, the sickle holder comprising: The bent portion is fixedly connected to the cover plate. A vertical part is provided on the side of the cover plate opposite to the cover opening, and the vertical part is fixedly connected to the first lifting assembly; A horizontal section is provided on the side of the cover plate near the cover opening, and the horizontal section is fixedly connected to the pressure plate.

[0007] Furthermore, the vertical part is provided with a plurality of first adjustment holes at one end away from the cover plate, the plurality of first adjustment holes are spaced apart along the height direction, the first lifting component is provided with a second adjustment hole, and the tin coating equipment further includes a first adjustment bolt, the first adjustment bolt passes through the first adjustment hole and is threadedly connected to the second adjustment hole; And / or, the horizontal part is provided with a plurality of third adjustment holes, the plurality of third adjustment holes are spaced apart in the horizontal direction, the pressure plate is provided with a fourth adjustment hole, and the tin coating equipment further includes a second adjustment bolt, the second adjustment bolt passes through the fourth adjustment hole and is threadedly connected to the third adjustment hole.

[0008] Further, the first lifting component includes: A first column extends along the height direction, and a first mounting base is provided at both ends of the first column. A first mounting hole is provided on each of the first mounting bases, and the first mounting hole penetrates the first mounting base along the height direction. The first slide rail extends along the height direction and is fixedly connected to the first column. A first screw extends along the height direction and is rotatably connected to the first mounting hole. The first slider is fitted with the first screw and disposed between the two first mounting seats. The first slider can slide along the slide rail and is fixedly connected to the vertical part. The first motor is located at one end of the first column and connected to the first screw.

[0009] Furthermore, the cover also includes a second lifting assembly, the second lifting assembly comprising: The second column extends along the height direction, and the two ends of the second column are provided with second mounting seats. Each of the second mounting seats is provided with a second mounting hole, and the second mounting hole penetrates the second mounting seat along the height direction. The second screw extends along the height direction and is rotatably connected in the second mounting hole. The second slider is fitted with the second screw and is located between the two second mounting seats. The second slider is provided with two guide wheels, one of which is located on one side of the second column and the other guide wheel is located on the other side of the column. The second slider is fixedly connected to the air knife assembly. The second motor is located at one end of the second column and connected to the second screw.

[0010] Furthermore, the first outlet includes an air knife lifting hole, which extends along the height direction. The air knife is located in the first outlet and can move along the air knife lifting hole; The air knife assembly also includes: An air knife support base, one end of which is fixedly connected to the second slider, and the other end of which is fixedly connected to the air knife; An air nozzle is provided on the air knife, and the air nozzle is capable of blowing air toward the first outlet.

[0011] Furthermore, the air knife support base is Z-shaped, including a first horizontal plate, a vertical plate, and a second horizontal plate. One end of the vertical plate is fixedly connected to the first horizontal plate, and the other end is fixedly connected to the second horizontal plate. The first horizontal plate is provided with an air knife mounting hole, the air knife mounting hole is connected to the first outlet, and the air knife (231) is provided in the air knife mounting hole; The second horizontal plate is fixedly connected to the second slider; Furthermore, a limiting plate is provided on the side of the cover plate away from the opening, and the limiting plate is located between the second horizontal plate and the cover plate.

[0012] The beneficial effects of the technical solution provided by this utility model embodiment are: The tin coating equipment provided in this embodiment of the utility model has the following features: 1) Low liquid level seals at both ends of the tin furnace and high liquid level protrusions on the furnace cover, which greatly reduces the exposure of the tin surface to air. At the same time, the protrusions are equipped with a first inlet and a second inlet for the passage of tin strip and solder strip, respectively. The first inlet, in conjunction with a screw cap, is designed to reduce the contact area between the tin and air, while also allowing tin bars and solder strips to enter the tin furnace; 2) An integrated cover integrates functional modules such as a sickle frame, pressure plate, air knife assembly, first lifting assembly, and second lifting assembly into the cover. The integrated cover physically limits the contact area between the tin and air, and combined with an inert gas protection system, a positive pressure protection environment is formed inside the tin furnace, which fundamentally and significantly reduces the oxidation of the tin and results in extremely low dross generation. Attached Figure Description

[0013] Figure 1 This is a front view of the tin-coating equipment in an embodiment of this utility model.

[0014] Figure 2 This is a schematic diagram of the cover body in an embodiment of the present utility model.

[0015] Figure 3 This is a partial structural diagram of the cover in an embodiment of the present utility model.

[0016] Figure 4 This is a schematic diagram of the tin furnace bath in an embodiment of this utility model.

[0017] Figure 5 This is a partial structural schematic diagram of the air knife assembly in an embodiment of this utility model.

[0018] Figure 6 This is a schematic diagram of the pressure plate in an embodiment of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0020] In the description of the embodiments of this utility model, 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. They are only for the convenience of describing this utility model and 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 utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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; they can refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] This utility model embodiment provides a tin coating device, including: Tin furnace 1, the tin furnace 1 comprising: Furnace body 11, the furnace body 11 including a receiving cavity, The furnace cover 12 is capable of covering the accommodating cavity. The furnace cover 12 is provided with a cover opening 12a, a first inlet 12b, and a second inlet 12c. The first inlet 12b is used for solder bars to pass through, and the second inlet 12c is used for solder ribbons to pass through. Cover 2, the cover 2 comprising: Cover plate 21, which can cover the opening 12a, and the cover plate 21 is provided with a first outlet 21a, which is used for the welding strip to pass through; The first lifting component 22 is fixedly connected to the cover plate 21. The first lifting component 22 can drive the cover plate 21 to move closer to or away from the cover opening 12a. The air knife assembly 23 is located at the first outlet 21a, and the air knife assembly 23 includes an air knife 231.

[0024] In a specific embodiment, such as Figure 1 , Figure 2 , Figure 3 As shown, the furnace body 11 is provided with a furnace cover 12 above it. The furnace cover 12 is provided with a cover opening 12a, a first inlet 12b, and a second inlet 12c. The first lifting assembly 22 can drive the cover plate 21 to move downwards towards and cover the cover opening 12a or to open upwards and move away from the cover opening 12a. The cover plate 21 is provided with a first outlet 21a on its left side.

[0025] Before operation, the solder bar is inserted into the accommodating cavity of the furnace body 11 through the first inlet 12b. The solder bar melts into molten solder at high temperature. By setting the furnace cover 12 above the furnace body 11, the surface of part of the molten solder is isolated from the outside air, which is beneficial for rapid heating and melting of the tin alloy bar. During operation, the first lifting component 22 drives the cover plate 21 downward to approach and cover the cover opening 12a. At the same time, the solder strip enters the accommodating cavity through the second inlet 12c and is then discharged from the furnace body 11 through the first outlet 21a of the cover plate 21. Since the first outlet 21a is also equipped with the air knife component 23, the air knife component 23 can simultaneously blow the molten solder on the surface of the solder strip, thereby cooling and solidifying the molten solder coating on the white side of the solder strip and adjusting the thickness of the molten solder layer on the surface of the solder strip. When the cover body 2 covers the cover opening 12a, the air knife 231 can also blow inert gas into the furnace body 11 to cover the surface of the molten solder and prevent the molten solder from oxidizing at high temperature.

[0026] The specific configuration of the furnace cover 12 is not limited. In one specific embodiment, the furnace cover 12 further includes a protrusion 121, which is provided with the cover opening 12a, the first inlet 12b, and the second inlet 12c. And / or, the first inlet 12b is further provided with a screw cap 122, the screw cap 122 covering the first inlet 12b. For example... Figure 1 and Figure 4 As shown, the protrusion 121 protrudes upwards, allowing the molten solder level to rise to the protrusion 121 when heated. This facilitates sufficient buffering of the molten solder and also removes air from the lower liquid levels at both ends of the furnace body 11, thereby reducing the contact area between the molten solder and air and preventing oxidation. The screw cap 122 is provided at the first inlet 12b to cover it, which also helps to isolate external air and is beneficial for heating and melting the solder bars.

[0027] Furthermore, the cover plate 21 is provided with a pressure plate 211 on the side near the cover opening 12a. The side of the pressure plate 211 near the cover opening 12a is semi-circular and has a curved groove 211a. The curved groove 211a extends along the edge of the pressure plate 211.

[0028] It should be noted that when the solder strip passes through the receiving cavity of the solder bath 1, it floats on the surface of the molten solder due to its lightness and thinness. Therefore, during operation, when the cover plate 21 is lowered to cover the opening 12a, the pressure plate 211 on the lower side of the cover plate 21 allows the solder strip to be immersed in the molten solder. Furthermore, since the pressure plate 211 is semi-circular and its lower side has the curved groove 211a, as... Figure 6 As shown, the curved groove 211a extends along the pressure plate 211. Furthermore, the pressure plate 211 also ensures the rotation of the solder strip. The curved groove 211a on the pressure plate 211 helps to define the position of the solder strip, preventing it from shifting during movement and facilitating its immersion in the molten solder.

[0029] Furthermore, the pressure plate 211 is made of titanium alloy. Titanium alloy is resistant to high temperatures and corrosion, and has a long service life.

[0030] The pressure plate 211 is disposed on the lower side of the cover plate 21. In a specific embodiment, the cover body 2 further includes a sickle frame 24, which includes: The bent portion 241 is fixedly connected to the cover plate 21. A vertical part 242 is provided on the side of the cover plate 21 opposite to the cover opening 12a, and the vertical part 242 is fixedly connected to the first lifting assembly 22; A horizontal part 243 is provided on the side of the cover plate 21 near the cover opening 12a, and the horizontal part 243 is fixedly connected to the pressure plate 211.

[0031] like Figure 3As shown, the sickle frame 24 extends from top to bottom to form the vertical part 242, and after passing through the bending part 241, extends to the left to form the horizontal part 243. Since the vertical part 242 is fixedly connected to the first lifting assembly 22, the bending part 241 is fixedly connected to the cover plate 21, and the horizontal part 243 is fixedly connected to the pressure plate 211, the first lifting assembly 22 can drive the vertical part 242 to move up and down, thereby driving the cover plate 21 of the bending part 241 to move up and down, and driving the pressure plate 211 on the horizontal part 243 to move up and down. The structure is simple and the design is reasonable.

[0032] The connection method between the bending portion 241 and the cover plate 21, the connection method between the vertical portion 242 and the first lifting assembly 22, and the connection method between the pressure plate 211 and the horizontal portion 243 are not limited. The bending portion 241 and the cover plate 21 can be welded together. In a specific embodiment, the end of the vertical portion 242 away from the cover plate 21 is provided with a plurality of first adjustment holes 242a, the plurality of first adjustment holes 242a are spaced apart along the height direction, the first lifting assembly 22 is provided with a second adjustment hole, and the tinning equipment further includes a first adjustment bolt, the first adjustment bolt passing through the first adjustment hole 242a and threadedly connected to the second adjustment hole; And / or, the horizontal part 243 is provided with a plurality of third adjustment holes 243a, the plurality of third adjustment holes 243a are spaced apart in the horizontal direction, the pressure plate 211 is provided with a fourth adjustment hole, and the tin coating equipment further includes a second adjustment bolt, the second adjustment bolt passes through the fourth adjustment hole and is threadedly connected to the third adjustment hole 243a.

[0033] This application does not limit the shape, number, or position of the first adjusting hole 242a, the second adjusting hole, the third adjusting hole 243a, and the fourth adjusting hole. In a specific embodiment, such as... Figure 3As shown, on one hand, the first adjusting hole 242a on the vertical part 242 and the second adjusting hole on the first lifting assembly 22 are both round holes. The vertical part 242 is provided with three sets of the first adjusting hole groups, which are spaced apart along the height direction. Each set of the first adjusting hole groups includes two first adjusting holes, which are spaced apart along the horizontal direction. The first lifting assembly 22 is provided with two sets of the second adjusting hole groups, which are spaced apart along the height direction. Each set of the second adjusting hole groups includes two second adjusting holes, which are spaced apart along the horizontal direction. During installation, the sickle frame 24 is moved up and down so that any two sets of the three sets of the first adjusting hole groups correspond one-to-one with the two sets of the second adjusting hole groups on the first lifting assembly 22. The first adjusting bolt is passed through the first adjusting hole and threadedly connected to the second adjusting hole, thereby fixing the vertical part 242 of the sickle frame 24 to the first lifting assembly 22.

[0034] Similarly, on the other hand, the third adjustment hole on the horizontal part 243 is a round hole, and the fourth adjustment hole on the pressure plate 211 is an elongated hole. The horizontal part 243 has four third adjustment holes, which are spaced apart horizontally. The elongated hole on the pressure plate 211 extends horizontally. During installation, the pressure plate 211 is moved horizontally so that the elongated hole covers any two of the third adjustment holes on the horizontal part 243. The second adjustment bolt is then passed through the fourth adjustment hole and threadedly connected to the third adjustment hole, thus fixing the pressure plate 211 to the horizontal part 243.

[0035] This application does not limit the specific configuration of the first lifting component 22, and the first lifting component 22 includes: A first column extends along the height direction, and a first mounting base is provided at both ends of the first column. A first mounting hole is provided on each of the first mounting bases, and the first mounting hole penetrates the first mounting base along the height direction. The first slide rail 221 extends along the height direction and is fixedly connected to the first column. A first screw 222 extends along the height direction and is rotatably connected in the first mounting hole. The first slider 223 is sleeved on the first screw 222 and disposed between the two first mounting seats. The first slider 223 can slide along the slide rail. The first slider 223 is fixedly connected to the vertical part 242. The first motor 224 is located at one end of the first column and is connected to the first screw 222.

[0036] In a specific embodiment, such as Figure 2 As shown, the first column and the first slide rail 221 both extend vertically. The upper end of the first screw 222 is rotatably connected to the first mounting hole of one first mounting base, and the lower end is rotatably connected to the first mounting hole of another first mounting base. Since the first slider 223 is sleeved on the first screw 222, and the first motor 224 is fixedly connected to the upper end of the first screw 222, when the first motor 224 drives the first screw 222 to rotate, the first slider 223 can rotate relative to the first screw 222, and thus the first slider 223 can move up and down along the slide rail. Furthermore, since the first slider 223 is fixedly connected to the vertical part 242, the first slider 223 can drive the vertical part 242 to move up and down, thereby driving the cover plate 21 to move up and down.

[0037] This application does not limit the specific configuration of the second lifting component. In a specific embodiment, the cover 2 further includes a second lifting component 25, which includes: The second column 251 extends along the height direction, and the two ends of the second column 251 are provided with second mounting seats. Each of the second mounting seats is provided with a second mounting hole, and the second mounting hole penetrates the second mounting seat along the height direction. The second screw 252 extends along the height direction and is rotatably connected in the second mounting hole. The second slider 253 is sleeved on the second screw 252 and disposed between the two second mounting seats. The second slider 253 is provided with two guide wheels, one of which is disposed on one side of the second column 251 and the other guide wheel is disposed on the other side of the column. The second slider 253 is fixedly connected to the air knife assembly 23. The second motor 254 is located at one end of the second column 251 and connected to the second screw 252.

[0038] like Figure 3As shown, the second column 251 extends vertically. The upper end of the second screw 252 is rotatably connected to the second mounting hole of the second mounting base at the upper end of the second column 251, and the lower end is rotatably connected to the second mounting hole of the second mounting base at the lower end of the second column 251. The lower end of the second screw 252 is fixedly connected to the second motor 254. Therefore, starting the second motor 254 will cause the second screw 252 to rotate. Since the second slider 253 is sleeved on the second screw 252, and the two guide wheels of the second slider 253 are located on both sides of the second column 251, the rotation of the second screw 252 will cause the second slider 253 to move along the second column 251. Furthermore, since the second slider 253 is fixedly connected to the air knife assembly 23, the second slider 253 can drive the air knife assembly 23 to move vertically.

[0039] Furthermore, the first outlet 21a includes an air knife lifting hole 21b, which extends along the height direction. The air knife 231 is disposed in the first outlet 21a and can move along the air knife lifting hole 21b; The air knife assembly 23 also includes: Air knife support base 232, one end of which is fixedly connected to the second slider 253, and the other end of which is fixedly connected to the air knife 231; An air nozzle 233 is disposed on the air knife 231, and the air nozzle 233 is capable of blowing air toward the first outlet 21a.

[0040] In a specific embodiment, such as Figure 3 and Figure 5 As shown, the left end of the air knife support 232 is connected to the air knife 231, and the right end is connected to the second slider 253. When the second slider 253 moves up and down, it drives the air knife support 232 to move up and down as well. Nitrogen gas is blown through the nozzle 233 into the air knife lifting hole 21b, rapidly cooling the molten solder coated on the solder strip surface. Since the air knife 231 is located in the first outlet 21a, and the air knife lifting hole 21b of the first outlet 21a extends along the height direction, the air knife support 232 can drive the air knife 231 to move up and down along the air knife lifting hole 21b of the first outlet 21a. This facilitates adjusting the thickness of the molten solder on the solder strip surface, resulting in a simple structure and reasonable design.

[0041] The structure of the air knife support 232 is not limited, and the structure of the air knife support 232 can be adapted to meet actual needs. In a specific embodiment, the air knife support 232 is Z-shaped, including a first horizontal plate, a vertical plate, and a second horizontal plate. One end of the vertical plate is fixedly connected to the first horizontal plate, and the other end is fixedly connected to the second horizontal plate. The first horizontal plate is provided with an air knife mounting hole, the air knife mounting hole is connected to the first outlet 21a, and the air knife 231 is disposed in the air knife mounting hole; The second horizontal plate is fixedly connected to the second slider 253; like Figure 3 As shown, since the air knife mounting hole of the first horizontal plate is connected to the first outlet 21a, and the air knife 231 is provided in the air knife mounting hole, and the solder ribbon flows out from the first outlet 21a, the air knife 231 can blow air toward the solder ribbon and adjust the thickness of the molten solder layer on the surface of the solder ribbon.

[0042] Furthermore, a limiting plate 26 is provided on the side of the cover plate 21 away from the cover opening 12a, and the limiting plate 26 is located between the second horizontal plate and the cover plate 21.

[0043] like Figure 3 As shown, when the second slider 253 drives the air knife support 232 to move downward, the limiting plate 26 can limit the downward movement limit of the second horizontal plate of the air knife support 232, which facilitates the adjustment of the position of the air knife 231 and helps to quickly install the air knife assembly 23 into the first outlet 21a of the cover plate 21.

[0044] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A tin-coating device, characterized in that, include: Tin furnace (1), the tin furnace (1) comprising: Furnace body (11), the furnace body (11) including a receiving cavity, The furnace cover (12) is capable of covering the accommodating cavity. The furnace cover (12) is provided with a cover opening (12a), a first inlet (12b), and a second inlet (12c). The first inlet (12b) is used for solder bars to pass through, and the second inlet (12c) is used for solder ribbons to pass through. Cover (2), the cover (2) comprising: A cover plate (21) is provided on the cover plate (21) to cover the opening (12a), and the cover plate (21) is provided with a first outlet (21a) for the welding strip to pass through. The first lifting component (22) is fixedly connected to the cover plate (21), and the first lifting component (22) can drive the cover plate (21) to move closer to or away from the cover opening (12a). An air knife assembly (23) is located at the first outlet (21a), and the air knife assembly (23) includes an air knife (231).

2. The tin-coating equipment as described in claim 1, characterized in that, The furnace cover (12) also includes a protrusion (121), which is provided with the cover opening (12a), the first inlet (12b), and the second inlet (12c). And / or, the first inlet (12b) is also provided with a screw cap (122) that covers the first inlet (12b).

3. The tin-coating equipment as described in claim 1, characterized in that, The cover plate (21) is also provided with a pressure plate (211) on the side near the cover opening (12a). The side of the pressure plate (211) near the cover opening (12a) is semi-circular and has a curved groove (211a). The curved groove (211a) extends along the edge of the pressure plate (211).

4. The tin-coating equipment as described in claim 3, characterized in that, The cover (2) also includes a sickle holder (24), which includes: The bent portion (241) is fixedly connected to the cover plate (21). A vertical part (242) is provided on the side of the cover plate (21) away from the cover opening (12a), and the vertical part (242) is fixedly connected to the first lifting assembly (22); A horizontal part (243) is provided on the side of the cover plate (21) near the cover opening (12a), and the horizontal part (243) is fixedly connected to the pressure plate (211).

5. The tin-coating equipment as described in claim 4, characterized in that, The vertical part (242) is provided with a plurality of first adjustment holes (242a) at one end away from the cover plate (21). The plurality of first adjustment holes (242a) are spaced apart along the height direction. The first lifting component (22) is provided with a second adjustment hole. The tin coating equipment also includes a first adjustment bolt, which passes through the first adjustment hole (242a) and is threadedly connected to the second adjustment hole. And / or, the horizontal part (243) is provided with a plurality of third adjustment holes (243a), the plurality of third adjustment holes (243a) are spaced apart in the horizontal direction, the pressure plate (211) is provided with a fourth adjustment hole, the tin coating equipment further includes a second adjustment bolt, the second adjustment bolt passes through the fourth adjustment hole and is threadedly connected to the third adjustment hole (243a).

6. The tin-coating equipment as described in claim 4, characterized in that, The first lifting assembly (22) includes: A first column extends along the height direction, and a first mounting base is provided at both ends of the first column. A first mounting hole is provided on each of the first mounting bases, and the first mounting hole penetrates the first mounting base along the height direction. The first slide rail (221) extends along the height direction and is fixedly connected to the first column. The first screw (222) extends along the height direction and is rotatably connected in the first mounting hole. The first slider (223) is fitted with the first screw (222) and disposed between the two first mounting seats. The first slider (223) can slide along the slide rail. The first slider (223) is fixedly connected to the vertical part (242). The first motor (224) is located at one end of the first column and connected to the first screw (222).

7. The tin-coating equipment as described in claim 1, characterized in that, The cover (2) further includes a second lifting assembly (25), which includes: The second column (251) extends along the height direction, and the two ends of the second column (251) are provided with second mounting seats. Each of the second mounting seats is provided with a second mounting hole, and the second mounting hole penetrates the second mounting seat along the height direction. The second screw (252) extends along the height direction and is rotatably connected in the second mounting hole. The second slider (253) is fitted with the second screw (252) and is located between the two second mounting seats. The second slider (253) is provided with two guide wheels. One guide wheel is located on one side of the second column (251) and the other guide wheel is located on the other side of the column. The second slider (253) is fixedly connected to the air knife assembly (23). The second motor (254) is located at one end of the second column (251) and connected to the second screw (252).

8. The tin-coating equipment as described in claim 7, characterized in that, The first outlet (21a) includes an air knife lifting hole (21b) that extends along the height direction. The air knife (231) is located in the first outlet (21a) and can move along the air knife lifting hole (21b); The air knife assembly (23) also includes: Air knife support base (232), one end of which is fixedly connected to the second slider (253), and the other end of which is fixedly connected to the air knife (231). An air nozzle (233) is provided on the air knife (231), and the air nozzle (233) can blow air toward the first outlet (21a).

9. The tin-coating equipment as described in claim 8, characterized in that, The air knife support base (232) is Z-shaped, including a first horizontal plate, a vertical plate, and a second horizontal plate. One end of the vertical plate is fixedly connected to the first horizontal plate, and the other end is fixedly connected to the second horizontal plate. The first horizontal plate is provided with an air knife mounting hole, which is connected to the first outlet (21a), and the air knife (231) is disposed in the air knife mounting hole; The second horizontal plate is fixedly connected to the second slider (253).

10. The tin-coating equipment as described in claim 9, characterized in that, The cover plate (21) is also provided with a limiting plate (26) on the side away from the cover opening (12a), and the limiting plate (26) is located between the second horizontal plate and the cover plate (21).

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