Surface treatment equipment

Abstract

This application relates to a surface treatment apparatus, which includes a grease removal device, an oxide layer removal device, a drying device, and a conveying device. The conveying device includes a drive motor, a conveyor belt, a drive wheel, a driven wheel, and a guide wheel assembly. The conveyor belt is wound around the outside of the drive wheel and the driven wheel, and the drive motor drives the drive wheel to continuously move the conveyor belt between the grease removal device, the oxide layer removal device, and the drying device. The surface treatment apparatus also includes a cleaning device, which has a cleaning tank. The conveyor belt is wound around the guide wheel assembly and can enter and exit the cleaning tank through the guide wheel assembly. The surface treatment apparatus provided by this application solves the problems that synchronously operating conveying devices easily contaminate the workpiece surface, and that independently operating multi-segment conveying mechanisms easily cause scratches on the workpiece surface and workpiece position displacement due to asynchrony.

Description

Technical Field

[0001] This application relates to the field of workpiece impurity removal equipment, and in particular to a surface treatment device. Background Technology

[0002] In the field of new energy vehicles, thermal management of batteries is typically required, generally utilizing cooling plates for heat exchange (including heating and dissipation). Typically, a single cooling plate is first shaped through a series of shaping processes, and then multiple cooling plates are brazed together in a furnace. The surface of the shaped cooling plates retains a layer of grease (mainly brightening varnish), and the surface of the cooling plates (usually aluminum plates) also has an oxide layer. The presence of these grease and oxide layers significantly reduces the brazing strength of the subsequent cooling plates. Therefore, before brazing in the furnace, it is necessary to remove the grease and oxide layers from the surface of the cooling plates.

[0003] In existing technologies, multiple cleaning processes are typically used to remove the grease and oxide layers from the surface of the cooling plate. It's important to note that the side of the workpiece closest to the conveyor does not require brazing; therefore, flux is only sprayed onto the side of the workpiece facing away from the conveyor. However, during flux application, a small amount of flux is inevitably sprayed onto the conveyor, resulting in flux adhering to the side of the workpiece closest to the conveyor during transport. Since flux typically contains binders, this adhering flux can cause surface defects and affect the flatness of the workpiece surface.

[0004] Therefore, to prevent flux applied in the previous process from being carried into the next process by the conveyor, the common practice is to divide the conveyor into multiple independently operating segments. That is, each process has its own independent conveyor mechanism to transport the workpiece. However, it is difficult for multiple independently operating conveyor mechanisms to operate completely synchronously. As the workpiece moves between conveyor mechanisms, the difference in speed between adjacent conveyor mechanisms can easily cause scratches on the workpiece surface, and can also cause the workpiece to shift position, leading to machine jamming. Summary of the Invention

[0005] Therefore, it is necessary to provide a surface treatment device to solve the problems that synchronously operating conveying devices are prone to contaminating the workpiece surface, and that independently operating multi-segment conveying mechanisms are prone to scratching the workpiece surface and shifting the workpiece position due to asynchrony.

[0006] The surface treatment equipment provided in this application includes a grease removal device, an oxide layer removal device, a drying device, and a conveying device, arranged sequentially. The grease removal device is used to remove grease from the surface of a workpiece, the oxide layer removal device is used to remove the oxide layer from one side of the workpiece surface, and the drying device is used to dry the moisture on the workpiece surface. The conveying device includes a drive motor, a conveyor belt, a drive wheel, a driven wheel, and a guide wheel assembly, with one or more driven wheels. The conveyor belt extends continuously from the starting end of the grease removal device, through the oxide layer removal device, to the ending end of the drying device. The conveyor belt is wound around the outside of the drive wheel and the driven wheel, and the drive wheel is connected to the output end of the drive motor. The drive motor can drive the drive wheel to continuously move the conveyor belt between the grease removal device, the oxide layer removal device, and the drying device. The surface treatment equipment also includes a cleaning device, located between the oxide layer removal device and the drying device, and equipped with a cleaning tank for cleaning the conveyor belt. One end of the guide wheel assembly is located inside the cleaning tank, and the other end is located at the opening of the cleaning tank. The conveyor belt is wound around the guide wheel assembly and can enter and exit the cleaning tank through the guide wheel assembly. The conveyor belt can also drive the workpiece from the end of the guide wheel assembly near the oxide layer removal device to the end of the guide wheel assembly near the drying device.

[0007] In one embodiment, the conveyor belt includes two parallel conveyor chains and a woven mesh disposed between the two conveyor chains, with both ends of the woven mesh connected to the conveyor chains respectively. The drive wheel is a gear structure, and the conveyor chains mesh with the drive wheel so that the drive wheel can drive the conveyor chains to move the woven mesh.

[0008] In one embodiment, the guide wheel assembly includes a first guide wheel, a second guide wheel, and a third guide wheel. The first guide wheel and the third guide wheel are located above the opening of the cleaning tank, with the first guide wheel located at one end of the guide wheel assembly near the oxide layer removal device and the third guide wheel located at one end of the guide wheel assembly near the drying device. The first guide wheel and the third guide wheel are spaced apart, and the distance between the first guide wheel and the third guide wheel is less than a preset distance. The second guide wheel is located inside the cleaning tank and spaced apart from the inner wall of the cleaning tank. The conveyor belt is sequentially wound around the first guide wheel, the second guide wheel, and the third guide wheel.

[0009] In one embodiment, the cleaning device includes a cleaning tank, a filter assembly, and an ultrasonic generator. The cleaning tank is located in the cleaning tank and contains cleaning liquid. The filter assembly is connected to the cleaning tank and communicates with the cleaning tank to filter and remove impurities from the cleaning liquid entering the cleaning tank. The ultrasonic generator is located at one end of the cleaning tank and can emit ultrasonic waves into the cleaning tank to remove flux from the surface of the conveyor belt.

[0010] In one embodiment, the filtration assembly includes a liquid pump, a filter, and connecting pipes, with the inlets of the filter, the liquid pump, and the cleaning tank connected sequentially via multiple connecting pipes.

[0011] In one embodiment, the bottom end of the side wall of the cleaning tank is provided with a slag discharge port that communicates with the cleaning tank, and a slag discharge valve is provided at the slag discharge port for opening or closing the slag discharge port.

[0012] In one embodiment, the bottom end of the side wall of the cleaning tank is provided with a drain port that connects to the cleaning tank, and a drain valve is provided at the drain port for opening or closing the drain port.

[0013] In one embodiment, the surface treatment apparatus further includes a tensioning mechanism connected to the conveyor belt for tightening the conveyor belt.

[0014] In one embodiment, the tensioning mechanism includes a first support roller and a second support roller that are spaced apart from each other and are fixedly arranged; the tensioning mechanism also includes a gravity pressing roller that is rolled between the first support roller and the second support roller, and the conveyor belt is sequentially wound around the first support roller, the gravity pressing roller and the second support roller, and the gravity pressing roller is pressed against the upper surface of the conveyor belt to apply a downward pressing force to the conveyor belt.

[0015] In one embodiment, there are three driven wheels, with the three driven wheels and one driving wheel distributed at the four corners of the quadrilateral, and the conveyor belt is sequentially wound around the driving wheel and the three driven wheels.

[0016] Compared with the prior art, the surface treatment equipment provided in this application consists of a conveyor belt that extends continuously from the starting end of the grease removal device through the oxide layer removal device to the ending end of the drying device. The drive motor can drive the drive wheel to move the conveyor belt continuously between the grease removal device, the oxide layer removal device, and the drying device. Furthermore, the conveyor belt can move the workpiece from the end of the guide wheel assembly near the oxide layer removal device to the end of the guide wheel assembly near the drying device. It can be seen that the conveyor device has only one conveyor belt, and the movement of the conveyor belt at each location in the grease removal device, the oxide layer removal device, and the drying device is synchronous. Therefore, the conveyor device provided in this application effectively solves the problem of workpiece surface scratches and workpiece position displacement caused by asynchronous movement at different locations in segmented conveyor mechanisms.

[0017] Furthermore, a cleaning device is provided between the oxide layer removal device and the drying device. This cleaning device includes a cleaning tank for cleaning the conveyor belt. The conveyor belt is wound around a guide wheel assembly and can enter and exit the cleaning tank through the guide wheel assembly. Therefore, after leaving the oxide layer removal device, the conveyor belt can enter the cleaning tank through the guide wheel assembly to remove any flux adhering to it. Afterward, the cleaned conveyor belt leaves the cleaning tank through the guide wheel assembly and enters the drying device. This solves the problem of synchronously operating conveyor devices easily contaminating the workpiece surface.

[0018] Furthermore, since the conveyor belt can move the workpiece from the end of the guide wheel assembly near the oxide layer removal device to the end of the guide wheel assembly near the drying device, it can be concluded that the guide wheel assembly will not affect the continuous movement of the workpiece on the conveyor belt. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of a surface treatment apparatus according to an embodiment of this application;

[0021] Figure 2 for Figure 1 An enlarged view of point A shown;

[0022] Figure 3 for Figure 1 An enlarged view of point B shown;

[0023] Figure 4 for Figure 1 An enlarged view of point C shown;

[0024] Figure 5 This is a schematic diagram of the structure of a cleaning device according to an embodiment of this application.

[0025] Reference numerals: 100, Grease removal device; 110, First processing chamber; 111, First processing cavity; 112, First connecting port; 120, First air circulation assembly; 121, First exhaust fan; 122, First air duct; 123, First air valve; 130, First heating assembly; 131, First heating element; 200, Oxide layer removal device; 210, Second processing chamber; 211, Second processing cavity; 220, Second air circulation assembly; 221, Second exhaust fan; 222, Second blower; 230, Spraying assembly; 231, Spray gun; 232, Robotic arm; 240, Flux recovery assembly; 241, Collection funnel; 242, Storage chamber; 300, Drying device; 310, Third processing chamber; 311, Third processing cavity; 312, Second connecting port; 320, Third air circulation assembly; 321, Third exhaust fan 322. Second air duct; 323. Second air valve; 330. Second heating component; 331. Second heating element; 400. Cooling fan; 500. Mounting bracket; 600. Conveying device; 610. Drive motor; 620. Conveyor belt; 630. Drive wheel; 640. Driven wheel; 650. Guide wheel assembly; 651. First guide wheel; 652. Second guide wheel; 653. Third guide wheel; 700. Cleaning device; 710. Cleaning tank; 711. Cleaning trough; 712. Slag discharge port; 713. Slag discharge valve; 714. Liquid discharge port; 715. Liquid discharge valve; 720. Ultrasonic generator; 730. Filter assembly; 731. Liquid pump; 732. Filter; 733. Connecting pipe; 800. Tensioning mechanism; 810. First support roller; 820. Second support roller; 830. Gravity pressing roller. Detailed Implementation

[0026] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] In the field of new energy vehicles, thermal management of batteries is typically required, generally utilizing cooling plates for heat exchange (including heating and dissipation). Typically, a single cooling plate is first shaped through a series of shaping processes, and then multiple cooling plates are brazed together in a furnace. The surface of the shaped cooling plates retains a layer of grease (mainly brightening varnish), and the surface of the cooling plates (usually aluminum plates) also has an oxide layer. The presence of these grease and oxide layers significantly reduces the brazing strength of the subsequent cooling plates. Therefore, before brazing in the furnace, it is necessary to remove the grease and oxide layers from the surface of the cooling plates.

[0033] In existing technologies, multiple cleaning processes are typically used to remove the grease and oxide layers from the surface of the cooling plate. Cleaning the cooling plate in an open space may cause grease to evaporate into the external environment, or the cleaning agent (usually flux, used to remove the oxide layer) to leak into the external environment, resulting in serious pollution of the working environment and affecting the health of operators. Cleaning the cooling plate in a confined space may result in excessively high concentrations of grease vapor, which could easily lead to deflagration.

[0034] Please see Figures 1-5 To address the problems of grease or cleaning agent leakage and the potential for deflagration caused by grease in existing cleaning technologies, this application provides a surface treatment apparatus. The apparatus includes a grease removal device 100, an oxide layer removal device 200, and a conveying device 600, which sequentially conveys workpieces to the grease removal device 100 and the oxide layer removal device 200.

[0035] The grease removal device 100 includes a first processing chamber 110, a first air circulation assembly 120, and a first heating assembly 130. The first processing chamber 110 has a first processing cavity 111. The first heating assembly 130 is disposed within the first processing cavity 111 and is capable of heating the ambient temperature within the first processing cavity 111 to a first preset temperature value, which is greater than the evaporation temperature of the grease. The first air circulation assembly 120 is connected to the first processing cavity 111 to control the exchange of gas within the first processing cavity 111 with external gas.

[0036] The oxide layer removal device 200 includes a second processing chamber 210, a second air circulation assembly 220, and a spraying assembly 230. The second processing chamber 210 is provided with a second processing cavity 211. The spraying assembly 230 is disposed in the second processing cavity 211 and is used to spray flux (for removing the oxide layer) onto the surface of the workpiece. The second air circulation assembly 220 is connected to the second processing cavity 211 to control the exchange of gas in the second processing cavity 211 with external gas, and the second air circulation assembly 220 can control the air pressure in the second processing cavity 211.

[0037] It should be noted that the evaporation temperature of the varnish is around 150℃, and the first preset temperature range is between 200℃ and 250℃.

[0038] When the surface treatment equipment starts operating, the first heating component 130 preheats the first processing chamber 111 to a first preset temperature value. Then, the conveying device 600 conveys the workpiece into the first processing chamber 111. Since the first preset temperature value is greater than the evaporation temperature of grease, the grease adhering to the workpiece surface can evaporate into the first processing chamber 111. It should be noted that grease (mainly varnish) is prone to deflagration when its concentration in a confined space exceeds a certain value. Therefore, the first air circulation component 120 controls the exchange of gas between the first processing chamber 111 and the outside gas to transport the grease vapor from the first processing chamber 111 to the outside, ensuring that the concentration of grease vapor in the first processing chamber 111 does not exceed the safe concentration value for deflagration, thus ensuring the safety of the grease removal device 100 in removing grease from the workpiece surface. Furthermore, since the above process takes place within the first processing chamber 111, the diffusion of grease vapor into the working environment is effectively prevented, thereby protecting the health of the operators.

[0039] After the grease on the workpiece surface is removed, the workpiece is conveyed from the first processing chamber 111 to the second processing chamber 211 using the conveying device 600. Then, flux (usually a mixture of flux and water) is sprayed onto one side of the workpiece surface using the spraying assembly 230 to dissolve the oxide layer on the workpiece surface in the flux solution. Furthermore, excess flux solution in the space of the second processing chamber 211 is transferred to a specific area by the second air circulation assembly 220 for recycling. Since the second air circulation assembly 220 can control the air pressure within the second processing chamber 211, a negative pressure area can be created within the second processing chamber 211 to prevent the flux solution from diffusing to other areas of the surface treatment equipment. Therefore, the oxide layer removal device 200 effectively prevents the diffusion of flux solution, ensuring the health of the operators.

[0040] In one embodiment, such as Figure 2 As shown, the first heating component 130 includes a plurality of first heating elements 131, which are evenly distributed within the first processing cavity 111.

[0041] This facilitates the preheating of the first processing chamber 111 by the first heating component 130 and improves the temperature uniformity within the entire first processing chamber 111.

[0042] It should be noted that the preheating step of setting multiple first heating elements 131 within the first processing chamber 111 is crucial. If the workpiece is transferred to the first processing chamber 111 before heating, the following problems will occur. Specifically, if the first air circulation component 120 is not turned on during heating, the probability of deflagration of the grease vapor within the first processing chamber 111 will increase sharply as the concentration of grease vapor increases. If the first air circulation component 120 is turned on during heating, the ambient temperature within the first processing chamber 111 will fail to rise to the first preset temperature value for a prolonged period, leading to a sharp increase in the energy consumption of the surface treatment equipment. Therefore, the preheating step is extremely critical.

[0043] In one embodiment, such as Figure 2 As shown, the first air circulation assembly 120 includes a first exhaust fan 121 and a first blower (not shown). The first exhaust fan 121 and the first blower are respectively connected to the two ends of the first processing chamber 111. The first exhaust fan 121 is used to extract the gas in the first processing chamber 111, and the first blower is used to deliver air into the first processing chamber 111.

[0044] This configuration greatly improves the gas circulation efficiency within the first processing chamber 111.

[0045] Specifically, such as Figure 2 As shown, the first air circulation assembly 120 also includes a first air duct 122 and a first air valve 123. The first exhaust fan 121 is connected to various areas of the first processing chamber 111 through multiple first air ducts 122. Furthermore, a first air valve 123 is provided at one end of the first air duct 122 that connects to the first processing chamber 111. The first air valve 123 is used to control the air volume of the first air duct 122.

[0046] By controlling the airflow of the first air duct 122 through the first air valve 123, on the one hand, it can ensure that the concentration of grease vapor in the first processing chamber 111 is kept below a safe concentration value; on the other hand, it can prevent the airflow of the first processing chamber 111 from being too large, which would cause the ambient temperature of the first processing chamber 111 to drop and thus affect the evaporation of grease on the surface of the workpiece.

[0047] Furthermore, in one embodiment, as Figure 2 As shown, the first processing chamber 110 is provided with a plurality of first connecting ports 112 respectively connected to the first processing cavity 111, and the first blower is connected to the first processing cavity 111 through the plurality of first connecting ports 112 respectively.

[0048] In one embodiment, such as Figure 3As shown, the second air circulation assembly 220 includes a second exhaust fan 221 and a second blower 222. The second exhaust fan 221 and the second blower 222 are respectively connected to the two ends of the second processing chamber 211. The second exhaust fan 221 is used to extract the gas in the second processing chamber 211, and the second blower 222 is used to deliver air into the second processing chamber 211.

[0049] This configuration greatly improves the gas circulation efficiency within the second processing chamber 211.

[0050] Furthermore, in one embodiment, the second blower 222 is capable of filtering the air to remove some impurities and ensure the purity of the air delivered to the second processing chamber 211.

[0051] In one embodiment, such as Figure 3 As shown, the spraying assembly 230 includes a spray gun 231 and a robotic arm 232. The robotic arm 232 is connected to the second processing chamber 210. One end of the spray gun 231 is connected to the robotic arm 232, and the other end extends into the second processing chamber 211. The robotic arm 232 can control the spray gun 231 to move and rotate relative to itself.

[0052] This greatly improves the spraying flexibility of the spraying component 230.

[0053] In one embodiment, such as Figure 3 As shown, the oxide layer removal device 200 also includes a flux recovery assembly 240, which is located below the second processing chamber 210 and communicates with the second processing cavity 211 so that the flux in the second processing cavity 211 can flow to the flux recovery assembly 240.

[0054] This avoids wasting flux and reduces the processing cost of surface treatment equipment.

[0055] Specifically, such as Figure 3 As shown, the flux recovery assembly 240 includes a collection funnel 241 and a storage chamber 242, and excess flux solution in the second processing chamber 211 can be collected into the storage chamber 242 through the collection funnel 241.

[0056] In one embodiment, such as Figure 4As shown, the surface treatment equipment also includes a drying device 300, and a conveying device 600 can convey the workpiece from the oxide layer removal device 200 to the drying device 300. The drying device 300 includes a third processing chamber 310, a third air circulation assembly 320, and a second heating assembly 330. The third processing chamber 310 is provided with a third processing cavity 311, and the second heating assembly 330 is disposed in the third processing cavity 311. The second heating assembly 330 can heat the ambient temperature in the third processing cavity 311 to a second preset temperature value so that the moisture on the surface of the workpiece evaporates. The third air circulation assembly 320 is connected to the third processing cavity 311 to control the exchange of gas in the third processing cavity 311 with external gas.

[0057] This makes it easier to perform brazing operations on the workpiece.

[0058] Furthermore, in one embodiment, as Figure 4 As shown, the second heating component 330 includes a plurality of second heating elements 331, which are evenly distributed within the third processing chamber 311.

[0059] This helps to improve the temperature uniformity within the entire third processing chamber 311.

[0060] In one embodiment, such as Figure 4 As shown, the third air circulation assembly 320 includes a third exhaust fan 321 and a third blower (not shown). The third exhaust fan 321 and the third blower are respectively connected to the two ends of the third processing chamber 311. The third exhaust fan 321 is used to extract the gas in the third processing chamber 311, and the third blower is used to deliver air into the third processing chamber 311.

[0061] This configuration greatly improves the gas circulation efficiency within the third processing chamber 311.

[0062] Specifically, such as Figure 4 As shown, the third air circulation assembly 320 also includes a second air duct 322 and a second air valve 323. The third exhaust fan 321 is connected to various areas of the third processing chamber 311 through multiple second air ducts 322. Furthermore, a second air valve 323 is provided at one end of the second air duct 322 that connects to the third processing chamber 311. The second air valve 323 is used to control the air volume of the second air duct 322.

[0063] Furthermore, in one embodiment, as Figure 4 As shown, the third processing chamber 310 is provided with a plurality of second connecting ports 312 respectively connected to the third processing cavity 311, and the third blower is connected to the third processing cavity 311 through the plurality of second connecting ports 312 respectively.

[0064] In one embodiment, such as Figure 4As shown, the surface treatment equipment also includes a cooling fan 400, which is located on the side of the drying device 300 away from the oxide layer removal device 200. The cooling fan 400 is used to cool the workpiece.

[0065] In one embodiment, such as Figures 1-4 As shown, the surface treatment equipment also includes a mounting bracket 500, and the grease removal device 100, the oxide layer removal device 200, the drying device 300 and the conveying device 600 are all mounted on the mounting bracket 500.

[0066] Furthermore, in one embodiment, the height of the mounting bracket 500 is adjustable so that the heights of the first processing chamber 110, the second processing chamber 210, and the third processing chamber 310 are all adjustable.

[0067] Furthermore, the first processing chamber 110, the second processing chamber 210, and the third processing chamber 310 are all equipped with movable doors (not shown in the figure) to open or close the first processing chamber 111, the second processing chamber 211, or the third processing chamber 311.

[0068] It is important to note that the side of the workpiece closest to the conveyor 600 does not require brazing. Therefore, flux is only sprayed onto the surface of the workpiece facing away from the conveyor 600; the side closest to the conveyor 600 does not require flux. However, during the flux spraying process, a small amount of flux will be sprayed onto the conveyor 600, causing flux to adhere to the surface of the workpiece closest to the conveyor 600 during workpiece transport. Since flux typically contains binders, this adhesion can cause surface defects and affect the flatness of the workpiece surface.

[0069] Therefore, to prevent the flux sprayed in the second processing chamber 211 from being carried into the third processing chamber 311 by the conveying device 600, the usual practice is to divide the conveying device 600 into multiple independently operating segments. That is, the first processing chamber 111, the second processing chamber 211, and the third processing chamber 311 each have independent conveying mechanisms to transport the workpieces. However, in this way, it is difficult for multiple independently operating conveying mechanisms to achieve completely synchronized operation. As a result, when the workpiece moves across conveying mechanisms, the difference in speed between adjacent conveying mechanisms can easily cause scratches on the workpiece surface, and can also cause the workpiece position to shift, leading to jamming.

[0070] Please see Figures 1-5To address the issues of synchronously operating conveyor devices 600 easily contaminating workpiece surfaces, and independently operating multi-segment conveyor mechanisms easily causing scratches on workpiece surfaces and workpiece position shifts due to asynchrony, the surface treatment equipment provided in this application includes a grease removal device 100, an oxide layer removal device 200, and a drying device 300 arranged sequentially. The conveyor device 600 includes a drive motor 610, a conveyor belt 620, a drive wheel 630, a driven wheel 640, and a guide wheel assembly 650, wherein the number of driven wheels 640 can be one or more.

[0071] The conveyor belt 620 extends continuously from the starting end of the grease removal device 100 through the oxide layer removal device 200 to the ending end of the drying device 300. The conveyor belt 620 is wrapped around the outside of the drive wheel 630 and the driven wheel 640. The drive wheel 630 is connected to the output end of the drive motor 610. The drive motor 610 can drive the drive wheel 630 to move the conveyor belt 620 continuously between the grease removal device 100, the oxide layer removal device 200 and the drying device 300.

[0072] The surface treatment equipment also includes a cleaning device 700, which is located between the oxide layer removal device 200 and the drying device 300, and the cleaning device 700 is provided with a cleaning tank 711 for cleaning the conveyor belt 620.

[0073] One end of the guide wheel assembly 650 is located inside the cleaning tank 711, and the other end is located at the opening of the cleaning tank 711. The conveyor belt 620 is wound around the guide wheel assembly 650 and can enter and exit the cleaning tank 711 through the guide wheel assembly 650. The conveyor belt 620 can drive the workpiece from the end of the guide wheel assembly 650 near the oxide layer removal device 200 to the end of the guide wheel assembly 650 near the drying device 300.

[0074] It should be noted that the starting end of the grease removal device 100 is the end of the grease removal device 100 that is far away from the oxide layer removal device 200, and the ending end of the drying device 300 is the end of the drying device 300 that is far away from the oxide layer removal device 200.

[0075] The conveyor belt 620 extends continuously from the starting end of the grease removal device 100 through the oxide layer removal device 200 to the ending end of the drying device 300. The drive motor 610 drives the drive wheel 630 to move the conveyor belt 620 continuously between the grease removal device 100, the oxide layer removal device 200, and the drying device 300. The conveyor belt 620 can also move the workpiece from the end of the guide wheel assembly 650 near the oxide layer removal device 200 to the end of the guide wheel assembly 650 near the drying device 300. It can be seen that the conveyor device 600 has only one conveyor belt 620, and the movement of the conveyor belt 620 at each location in the grease removal device 100, the oxide layer removal device 200, and the drying device 300 is synchronized. Therefore, the conveyor device 600 provided in this application effectively solves the problem of workpiece surface scratches and workpiece position displacement caused by asynchronous movement at different locations in a segmented conveyor mechanism.

[0076] Furthermore, a cleaning device 700 is provided between the oxide layer removal device 200 and the drying device 300. The cleaning device 700 is equipped with a cleaning tank 711 for cleaning the conveyor belt 620. The conveyor belt 620 is wound around the guide wheel assembly 650 and can enter and exit the cleaning tank 711 through the guide wheel assembly 650. It can be seen that after the conveyor belt 620 leaves the oxide layer removal device 200, it can enter the cleaning tank 711 through the guide wheel assembly 650 to remove the flux adhering to the conveyor belt 620. After that, the cleaned conveyor belt 620 leaves the cleaning tank 711 through the guide wheel assembly 650 and enters the drying device 300. In this way, the problem of the synchronously operating conveyor device 600 easily contaminating the surface of the workpiece is solved.

[0077] Furthermore, since the conveyor belt 620 can move the workpiece from one end of the guide wheel assembly 650 near the oxide layer removal device 200 to the other end of the guide wheel assembly 650 near the drying device 300, it can be concluded that the guide wheel assembly 650 will not affect the continuous movement of the workpiece on the conveyor belt 620.

[0078] In summary, the surface treatment equipment provided in this application effectively solves the problems that synchronously operating conveyor devices 600 are prone to contaminating the workpiece surface, and that independently operating multi-segment conveyor mechanisms are prone to scratching the workpiece surface and shifting the workpiece position due to asynchrony.

[0079] Furthermore, in one embodiment, there are three driven wheels 640, with the three driven wheels 640 and one driving wheel 630 distributed at the four corners of the quadrilateral, and the conveyor belt 620 sequentially wound around the driving wheel 630 and the three driven wheels 640.

[0080] In this way, the conveyor belt 620 can form a straight conveying end face, which is beneficial for the conveying of workpieces on the conveyor belt 620.

[0081] In one embodiment, the conveyor belt 620 includes two parallel conveyor chains (not shown) and a woven mesh (not shown) disposed between the two conveyor chains. The two ends of the woven mesh are respectively connected to the conveyor chains. The drive wheel 630 is a gear structure. The conveyor chains mesh with the drive wheel 630 so that the drive wheel 630 can drive the conveyor chains to move the woven mesh.

[0082] This greatly improves the transmission efficiency of the conveyor belt 620 and the drive wheel 630, and reduces the difficulty of setting up the conveyor belt 620.

[0083] Furthermore, in order to improve the connection stability of the transmission chain, in one embodiment, the driven wheel 640 is also a gear structure, and the transmission chain meshes with the driven wheel 640.

[0084] Specifically, the transmission chain is a multi-segment hinged figure-eight chain.

[0085] More specifically, in order to improve the structural strength of the woven mesh and reduce the degree of plastic deformation, in one embodiment, the woven mesh is made of metal, that is, the woven mesh is formed by weaving metal wires.

[0086] Furthermore, it should be noted that the conveyor belts of existing multi-segment conveyor mechanisms are made of PU material. When the ambient temperature of the workpiece is high (above 150°C), the PU material conveyor belt is prone to deformation, and the workpiece is prone to sticking to the conveyor belt. Therefore, to avoid the above problems, a cooling device is generally required to cool the conveyor belt. However, setting up a cooling device will also greatly increase the power consumption of the surface treatment equipment, thereby increasing the production cost of the workpiece.

[0087] In this application, replacing the PU material conveyor belt with a metal woven mesh not only improves the structural strength of the woven mesh and reduces its deformation, but also prevents the metal woven mesh from sticking to the workpiece. As a result, there is no need to set up a separate cooling device to cool the conveyor belt 620, which greatly reduces the power consumption of the surface treatment equipment and thus reduces the production cost of the workpiece.

[0088] In one embodiment, such as Figure 3As shown, the guide wheel assembly 650 includes a first guide wheel 651, a second guide wheel 652, and a third guide wheel 653. The first guide wheel 651 and the third guide wheel 653 are located above the opening of the cleaning tank 711, with the first guide wheel 651 located at one end of the guide wheel assembly 650 near the oxide layer removal device 200, and the third guide wheel 653 located at one end of the guide wheel assembly 650 near the drying device 300. The first guide wheel 651 and the third guide wheel 653 are spaced apart, and the distance between the first guide wheel 651 and the third guide wheel 653 is less than a preset distance. The second guide wheel 652 is located inside the cleaning tank 711 and spaced apart from the inner wall of the cleaning tank 711. The conveyor belt 620 is sequentially wound around the first guide wheel 651, the second guide wheel 652, and the third guide wheel 653.

[0089] It should be noted that the preset distance ranges from 1mm to 200mm (inclusive). The larger the size of the workpiece, the more appropriate the preset distance can be.

[0090] Typically, the workpieces are relatively large. Therefore, with this arrangement, the workpiece can easily cross the gap between the first guide wheel 651 and the third guide wheel 653, thus avoiding any impact from the gap between them on workpiece conveying. Therefore, this arrangement cleverly guides the conveyor belt 620 into the cleaning tank 711 for cleaning without affecting workpiece conveying, greatly improving the working efficiency of the guide wheel assembly 650 and reducing the structural complexity of the guide wheel assembly 650.

[0091] However, this is not the only one. In other embodiments, the number of second guide wheels 652 provided in the cleaning tank 711 can be multiple. This is beneficial to extend the cleaning time of the conveyor belt 620 in the cleaning tank 711 and improve the cleaning efficiency of the cleaning device 700.

[0092] In one embodiment, such as Figure 5 As shown, the cleaning device 700 includes a cleaning tank 710, a filter assembly 730, and an ultrasonic generator 720. A cleaning tank 711 is disposed in the cleaning tank 710 and contains cleaning fluid. The filter assembly 730 is connected to the cleaning tank 710 and communicates with the cleaning tank 711 to filter and remove impurities from the cleaning fluid entering the cleaning tank 711. The ultrasonic generator 720 is disposed at one end of the cleaning tank 710 and can emit ultrasonic waves into the cleaning tank 711 to remove flux from the surface of the conveyor belt 620.

[0093] This greatly improves the flux removal efficiency on the 620 conveyor belt.

[0094] Specifically, in one embodiment, such as Figure 5As shown, the filter assembly 730 includes a liquid pump 731, a filter 732, and a connecting pipe 733. The inlets of the filter 732, the liquid pump 731, and the cleaning tank 711 are connected sequentially through multiple connecting pipes 733.

[0095] Furthermore, in one embodiment, as Figure 5 As shown, the bottom end of the side wall of the cleaning tank 710 is provided with a slag discharge port 712 that connects to the cleaning tank 711, and a slag discharge valve 713 is provided at the slag discharge port 712 for opening or closing the slag discharge port 712.

[0096] This facilitates the recycling of flux.

[0097] Furthermore, such as Figure 5 As shown, the bottom of the side wall of the cleaning tank 710 is provided with a drain port 714 that connects to the cleaning tank 711, and a drain valve 715 is provided at the drain port 714 to open or close the drain port 714.

[0098] In this way, wastewater can be collected, preventing wastewater from polluting the environment.

[0099] In one embodiment, such as Figure 4 As shown, the surface treatment equipment also includes a tensioning mechanism 800, which is connected to the conveyor belt 620 for tightening the conveyor belt 620.

[0100] With this configuration, as soon as the conveyor belt 620 becomes slack, the tensioning mechanism 800 can tighten the conveyor belt 620 in time, preventing the slack of the conveyor belt 620 from affecting the conveying of the workpiece.

[0101] Specifically, in one embodiment, such as Figure 4 As shown, the tensioning mechanism 800 includes a first support roller 810 and a second support roller 820 arranged at relatively intervals, and the first support roller 810 and the second support roller 820 are fixedly arranged. The tensioning mechanism 800 also includes a gravity pressing roller 830, which is rolled between the first support roller 810 and the second support roller 820. The conveyor belt 620 is sequentially wound around the first support roller 810, the gravity pressing roller 830 and the second support roller 820, and the gravity pressing roller 830 presses against the upper surface of the conveyor belt 620 to apply a downward pressing force to the conveyor belt 620.

[0102] With this configuration, the conveyor belt 620 can be kept taut at all times by pressing the roller 830 with gravity, which effectively prevents the conveyor belt 620 from becoming loose and reduces the failure rate of the surface treatment equipment.

[0103] In summary, during operation, the surface treatment equipment provided in this application involves the following steps: the workpiece is first conveyed to the first processing chamber 111 via the feed port by the conveyor belt 620. The grease removal device 100 removes the grease from the workpiece surface. Then, the conveyor belt 620 conveys the workpiece to the second processing chamber 211, where the oxide layer removal device 200 removes the oxide film from one side of the workpiece surface. Next, the conveyor belt 620 enters the cleaning tank 711, where the cleaning device 700 cleans the conveyor belt 620 to remove flux from its surface. Afterward, the conveyor belt 620 carries the workpiece into the third processing chamber 311, where the drying device 300 dries the workpiece surface. Finally, the conveyor belt 620 conveys the workpiece to the cooling fan 400 to cool it down. Finally, the workpiece can be brazed in a brazing furnace.

[0104] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0105] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A surface treatment apparatus characterized by comprising: The surface treatment device comprises a grease removing device (100), an oxide layer removing device (200), a drying device (300) and a conveying device (600), wherein the grease removing device (100), the oxide layer removing device (200) and the drying device (300) are arranged in sequence. The grease removing device (100) is used for removing grease on the surface of the workpiece, the oxide layer removing device (200) is used for removing the oxide layer on one side of the surface of the workpiece, and the drying device (300) is used for drying the moisture on the surface of the workpiece. The conveying device (600) comprises a driving motor (610), a conveying mesh belt (620), a driving wheel (630), a driven wheel (640) and a guide wheel set (650), wherein the number of the driven wheel (640) is one or more. The conveying mesh belt (620) continuously extends from the starting end of the grease removing device (100) to the end of the drying device (300) through the oxide layer removing device (200), and the conveying mesh belt (620) is arranged on the outer side of the driving wheel (630) and the driven wheel (640), and the driving wheel (630) is connected to the output end of the driving motor (610), so that the driving motor (610) can drive the driving wheel (630) to continuously move the conveying mesh belt (620) between the grease removing device (100), the oxide layer removing device (200) and the drying device (300). The surface treatment device further comprises a cleaning device (700) arranged between the oxide layer removing device (200) and the drying device (300), and the cleaning device (700) is provided with a cleaning tank (711) for cleaning the conveying mesh belt (620). One end of the guide wheel set (650) is arranged in the cleaning tank (711), and the other end is arranged at the opening of the cleaning tank (711), the conveying mesh belt (620) is arranged on the guide wheel set (650) and can enter and exit the cleaning tank (711) through the guide wheel set (650), and the conveying mesh belt (620) can drive the workpiece to move from one end of the guide wheel set (650) close to the oxide layer removing device (200) to the other end of the guide wheel set (650) close to the drying device (300). The conveying mesh belt (620) comprises two conveying chains arranged in parallel and a woven mesh arranged between the two conveying chains, and the two ends of the woven mesh are connected to the conveying chains, respectively, the driving wheel (630) is a gear structure, the conveying chains are engaged with the driving wheel (630), so that the driving wheel (630) can drive the conveying chains to move the woven mesh. The guide wheel set (650) comprises a first guide wheel (651), a second guide wheel (652) and a third guide wheel (653), the first guide wheel (651) and the third guide wheel (653) are arranged above the opening of the cleaning tank (711), and the first guide wheel (651) is arranged at one end of the guide wheel set (650) close to the oxide layer removing device (200), and the third guide wheel (653) is arranged at one end of the guide wheel set (650) close to the drying device (300); the first guide wheel (651) and the third guide wheel (653) are arranged at intervals, and the distance between the first guide wheel (651) and the third guide wheel (653) is less than a preset distance; the second guide wheel (652) is arranged in the cleaning tank (711) and is arranged at intervals with the inner wall of the cleaning tank (711), and the conveying mesh belt (620) is sequentially arranged around the first guide wheel (651), the second guide wheel (652) and the third guide wheel (653).

2. The surface treatment apparatus according to claim 1, characterized by The cleaning device (700) comprises a cleaning pool (710), a filter assembly (730) and an ultrasonic generator (720), the cleaning tank (711) is arranged in the cleaning pool (710), and cleaning liquid is arranged in the cleaning tank (711), the filter assembly (730) is connected to the cleaning pool (710) and communicates with the cleaning tank (711), so as to filter and remove impurities in the cleaning liquid entering the cleaning tank (711); the ultrasonic generator (720) is arranged at one end of the cleaning pool (710), and the ultrasonic generator (720) can emit ultrasonic waves into the cleaning tank (711) to remove flux on the surface of the conveying mesh belt (620).

3. The surface treatment apparatus according to claim 2, characterized by The filter assembly (730) comprises a liquid pump (731), a filter (732) and a connecting pipeline (733), the filter (732), the liquid pump (731) and the liquid inlet of the cleaning tank (711) are sequentially communicated through multiple sections of the connecting pipeline (733).

4. The surface treatment apparatus according to claim 2, characterized by The bottom end of the side wall of the cleaning pool (710) is provided with a slag discharge port (712) communicating with the cleaning tank (711), and a slag discharge valve (713) is arranged at the slag discharge port (712) to open or close the slag discharge port (712).

5. The surface treatment apparatus according to claim 2, characterized by The bottom end of the side wall of the cleaning pool (710) is provided with a liquid discharge port (714) communicating with the cleaning tank (711), and a liquid discharge valve (715) is arranged at the liquid discharge port (714) to open or close the liquid discharge port (714).

6. The surface treatment apparatus according to claim 1, characterized by A tensioning mechanism (800) is further arranged, which is connected to the conveying mesh belt (620) to tighten the conveying mesh belt (620).

7. The surface treatment apparatus according to claim 6, characterized by The tensioning mechanism (800) comprises a first supporting roller (810) and a second supporting roller (820) arranged oppositely and spaced apart, and the first supporting roller (810) and the second supporting roller (820) are fixedly arranged; the tensioning mechanism (800) further comprises a gravity pressing roller (830) arranged between the first supporting roller (810) and the second supporting roller (820), and the conveying mesh belt (620) is sequentially arranged around the first supporting roller (810), the gravity pressing roller (830) and the second supporting roller (820), and the gravity pressing roller (830) is pressed on the upper surface of the conveying mesh belt (620) to exert a downward pressing force on the conveying mesh belt (620).

8. The surface treatment apparatus according to claim 1, characterized by The number of the driven wheels (640) is three, and the three driven wheels (640) and the driving wheel (630) are respectively distributed at four corners of a quadrilateral, and the conveying mesh belt (620) is sequentially arranged around the driving wheel (630) and the three driven wheels (640).

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