Automatic spray device

Abstract

The utility model discloses an automatic spraying equipment relates to battery production technical field, and the spraying device in automatic spraying equipment is connected water pipe and gas pipe, can mix water flow and gas and form the spray, and the controller passes through the control valve to adjust the spray flow and the injection speed, realizes the automatic precision control spray, reduces the manual operation, improves production efficiency, and automatic spraying equipment is located the area above the tape of coating machine, and is set between the machine head export of coating machine and oven entrance, but is not oven inside, avoids the oven structure change, reduces the cost and installation complexity. In general, the embodiment provides a kind of spraying equipment that is convenient to install, low in cost and can realize automatic precision control.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, specifically to an automatic spraying device. Background Technology

[0002] Currently, spraying equipment is typically integrated inside the drying oven. This arrangement requires specialized modifications to the oven structure, resulting in complex installation and high costs. Furthermore, spraying equipment often relies on manual adjustment of flow rate and spray speed, leading to low operational efficiency and difficulty in meeting the demands for efficient and precise production control.

[0003] Therefore, there is an urgent need for a spraying device that is easy to install, low in cost, and can achieve precise automated control. Utility Model Content

[0004] This utility model provides an automatic spraying device, which aims to provide a spraying device that is easy to install, low in cost, and can achieve automatic and precise control.

[0005] In a first aspect, embodiments of this application propose an automatic spraying device, disposed between the head of a coating machine and an oven, and located above the conveyor belt of the coating machine; the automatic spraying device includes: a water pipe for supplying water flow and an air pipe for supplying gas; a spraying device connecting the water pipe and the air pipe, the spraying device being used to mix the water flow and the gas to form a spray; a control valve for adjusting the spray flow rate and the spraying speed; and a controller for controlling the control valve to adjust the spray flow rate and the spraying speed.

[0006] This embodiment proposes an automatic spraying device. The spraying unit connects a water pipe and an air pipe, enabling the mixing of water and gas to form a spray. The controller adjusts the spray flow rate and spray speed by controlling a control valve, achieving automated and precise spray control, reducing manual operation, and improving production efficiency. Furthermore, the automatic spraying device is located above the conveyor belt of the coating machine and between the machine head outlet and the oven inlet, rather than inside the oven, avoiding modifications to the oven structure and reducing costs and installation complexity. In summary, this embodiment provides a spraying device that is easy to install, low-cost, and enables automated and precise control.

[0007] In some embodiments, the control valve includes a first control valve and a second control valve; the first control valve is disposed in the water pipe and is used to regulate the flow rate of the water; the second control valve is disposed in the air pipe and is used to regulate the flow rate of the gas; the controller controls the first control valve to regulate the flow rate of the water pipe, thereby controlling the spray flow rate; and controls the second control valve to regulate the flow rate of the gas, thereby controlling the spray speed. In this embodiment, the control valves are divided into a first control valve and a second control valve. The first control valve is disposed in the water pipe and independently regulates the flow rate of the water, while the second control valve is disposed in the air pipe and independently regulates the flow rate of the gas, avoiding mutual interference between water and gas and enhancing the regulation accuracy.

[0008] In some embodiments, the control valve further includes a third control valve located at the nozzle of the spray device for controlling the nozzle size. The controller controls the third control valve to adjust the nozzle size, thereby controlling the spray flow rate. In this embodiment, a third control valve is added at the nozzle. By adjusting the nozzle size, the spray flow rate is controlled. The controller drives the third control valve to change the nozzle diameter; enlarging the nozzle increases the spray area, while narrowing the nozzle enhances spray concentration. For example, narrowing the nozzle when the travel belt is narrow avoids wasting spray.

[0009] In some embodiments, the controller controls the third control valve based on the humidity measurement result of the oven. In this embodiment, after spraying begins, the controller acquires the humidity detection result of the oven and controls the third control valve based on the humidity detection result to adjust the nozzle size of the spraying device, forming a closed-loop control to maintain the oven humidity stability in real time and prevent over-spraying or under-spraying.

[0010] In some embodiments, the device further includes: a switching valve for controlling the on / off state of the water pipe and the air pipe; the controller controls the opening and closing of the switching valve based on a set start and end time. This enables timed automatic spraying.

[0011] In some embodiments, the spraying device includes multiple atomizing nozzles arranged along the width direction of the coating machine's belt. In this embodiment, each atomizing nozzle is connected to a water pipe and an air pipe via independent pipes. The multiple atomizing nozzles, arranged along the width direction of the coating machine's belt, ensure that the spray from these nozzles evenly covers the width of the film on the belt, preventing uneven drying on both sides of the film due to insufficient spraying.

[0012] In some embodiments, the positions of the plurality of atomizing nozzles are fixed. In this embodiment, the fixed positions of the nozzles result in a robust structure, easy maintenance, and suitability for standardized production lines. Furthermore, the fixed design prevents vibration-induced displacement, ensuring consistent spray trajectory, making it particularly suitable for high-speed coating lines.

[0013] In some embodiments, the number of atomizing nozzles is four, with the spacing between two adjacent atomizing nozzles between 10cm and 20cm; or, the number of atomizing nozzles is three, with the spacing between two adjacent atomizing nozzles between 15cm and 25cm. This embodiment optimizes the number of atomizing nozzles for cases where the membrane includes three or four coating areas, avoiding spray overlap or gaps, and balancing equipment cost with coverage uniformity.

[0014] In some embodiments, the positions of the plurality of atomizing nozzles are adjustable. This adjustable position of the plurality of atomizing nozzles in this embodiment allows for flexible adaptation to product switching of different widths, reducing redundant equipment investment.

[0015] In some embodiments, the device further includes: a protective cover with an opening at its bottom, the length of which is parallel to the width of the coating machine's conveyor belt; and a spraying device disposed on the inner side of the top cover or the inner surface of the side wall of the protective cover, with the nozzle of the spraying device aligned with the opening. In this embodiment, the addition of a protective cover and the placement of the spraying device on the inner side of the top cover or the inner surface of the side wall prevents the spray from spreading to non-target areas, maintaining environmental cleanliness. Furthermore, the opening at the bottom of the protective cover, with its length parallel to the width of the coating machine's conveyor belt, and the nozzle of the spraying device aligned with the opening, allows for concentrated spray coverage of the conveyor belt, improving utilization.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the diaphragm proposed in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the first embodiment of the automatic spraying device proposed in this utility model;

[0020] Figure 3This is a schematic diagram of the structure of the second embodiment of the automatic spraying device proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the display showing the first interface according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the third embodiment of the automatic spraying device proposed in this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of the fourth embodiment of the automatic spraying device proposed in this utility model.

[0024] Figure 7 This is a schematic diagram of a display showing a second interface according to an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the fifth embodiment of the automatic spraying device proposed in this utility model. The realization of the purpose, functional features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0027] 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 invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the invention, are intended to cover non-exclusive inclusion.

[0028] In the description of the embodiments of this utility model, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly defined.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] In the description of this utility model embodiment, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0031] In the description of the embodiments of this utility model, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0032] In the description of the embodiments of this utility model, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 the embodiments of 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 the embodiments of this utility model.

[0033] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0034] Lithium-ion batteries are batteries that use lithium metal or lithium alloys as the negative electrode material and a non-aqueous electrolyte solution. Due to the highly reactive chemical properties of lithium metal, its processing, storage, and use require very strict environmental control. With the development of science and technology, lithium-ion batteries have become mainstream. As is well known, lithium-ion batteries generally include electrodes for charging and discharging.

[0035] Electrode production is an essential step in lithium battery manufacturing. The production process is as follows: A coating machine evenly coats the positive / negative electrode slurry onto a substrate, forming a... Figure 1 The diaphragm 100 shown includes a plurality of spaced-apart coating regions 101. Figure 1 (Darker parts), then, the film 100 is sent into an oven to remove the solvent from the battery slurry through high temperature, so that the solid powder can adhere to the substrate to form a coating, and the dried film 100 will be... Figure 1 Multiple electrodes can be obtained by cutting along the dashed line (for example only).

[0036] To prevent the membrane 100 from cracking or shedding powder during baking, which would affect the quality of the lithium battery, a spraying device is often installed inside the oven. This layout requires integrating the spraying device into the internal structure of the oven, which necessitates special modification or customization of the oven body. This results in a more complex equipment structure, greater installation difficulty, and a significant increase in manufacturing and maintenance costs.

[0037] Furthermore, the spray flow and spray speed of spraying equipment are usually controlled by manual operation of valves. This manual adjustment method is not only cumbersome and slow to respond, making it difficult to make real-time and precise adjustments according to changes in the production process, but also inefficient, increasing the burden on operators and hindering the continuous and efficient operation of the production line.

[0038] Therefore, there is an urgent need for a spraying device that is easy to install, low in cost, and can achieve precise automated control.

[0039] Based on this, this application proposes an automatic spraying device, which is installed between the head of a coating machine and the oven, and located above the conveyor belt of the coating machine; the automatic spraying device includes: a water pipe for supplying water flow and an air pipe for supplying gas; a spraying device that connects the water pipe and the air pipe, the spraying device being used to mix water flow and gas to form a spray; a control valve for adjusting the spray flow rate and spray speed; and a controller for controlling the control valve to adjust the spray flow rate and spray speed.

[0040] In this embodiment, the automatic spraying device connects a water pipe and an air pipe, enabling the mixing of water and gas to form a spray. The controller adjusts the spray flow rate and spray speed via a control valve, achieving automated and precise spray control, reducing manual operation, and improving production efficiency. Furthermore, the automatic spraying device is located above the coating machine's conveyor belt and between the machine head outlet and the oven inlet, rather than inside the oven, avoiding modifications to the oven structure and reducing costs and installation complexity. In summary, this embodiment provides a spraying device that is easy to install, low-cost, and enables automated and precise control.

[0041] The automatic spraying device according to the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0042] Figure 2 This is a schematic diagram of the structure of the first embodiment of the automatic spraying device of this application.

[0043] The automatic spraying device provided in this embodiment is used to spray water mist onto the surface of the diaphragm 100 to increase the water content on the surface of the diaphragm 100, so as to prevent the diaphragm 100 from cracking or shedding powder during the baking process, thereby improving the quality of the diaphragm 100.

[0044] An automatic spraying device is installed between the coating machine head and the drying oven, and above the coating machine's conveyor belt. For example, the automatic spraying device can be installed at the coating machine head outlet. The automatic spraying device sprays mist onto the surface of the film 100 as it passes the coating machine head outlet after coating. Alternatively, the automatic spraying device can also be installed on a support frame (on which the conveyor belt moves) between the coating machine head outlet and the drying oven. The automatic spraying device sprays mist onto the surface of the film 100 as it passes under the automatic spraying device.

[0045] In this embodiment, the automatic spraying device is located above the conveyor belt of the coating machine and is positioned between the machine head outlet and the oven inlet, rather than inside the oven, thus avoiding modifications to the oven structure and reducing costs and installation complexity.

[0046] Since the quality of the diaphragm 100 after baking is related to the amount of water sprayed on the surface of the diaphragm 100 before baking and the spraying range, if there is less water on the diaphragm 100 or the spraying range is small (some areas of the diaphragm 100 are not sprayed), the diaphragm 100 may still crack or shed powder during the baking process. Therefore, the automatic spraying equipment must strictly control the amount of water sprayed on the surface of the diaphragm 100 and the spraying range.

[0047] like Figure 2 As shown, the automatic spraying device in this embodiment includes: a water pipe 21, an air pipe 22, and a spraying device 23. Figure 2 It includes a first atomizing nozzle 23-1, a second atomizing nozzle 23-2, and a third atomizing nozzle 23-3, and a control valve 24. Figure 2 The device includes a first control valve 241 and a second control valve 242, and a controller 25. A water pipe 21 supplies water, and an air pipe 22 supplies gas. The spray device 23 is connected to both the water pipe 21 and the air pipe 22 to mix the water and gas to form a spray. The control valve 24 regulates the spray flow rate and spray speed. The controller 25 regulates the spray flow rate by controlling the control valve 24, thereby controlling the amount of water sprayed onto the surface of the diaphragm 100, and regulates the spray speed by controlling the control valve 24, thereby controlling the spray range.

[0048] The spray flow rate refers to the amount of water output from the spray device 23 per unit time, usually expressed in liters per minute (L / min) or liters per second (L / s). The spray flow rate determines the amount of water sprayed onto the diaphragm 100 per unit time. If other factors remain constant, the higher the spray flow rate, the more water is sprayed onto the diaphragm 100 per unit time; conversely, the lower the spray flow rate, the less water is sprayed onto the diaphragm 100 per unit time.

[0049] The spray velocity refers to the initial velocity of the liquid when it is ejected, measured in meters per second (m / s). The spray velocity directly affects the spray range (i.e., the lateral or longitudinal distance that the droplets can cover). If other factors remain constant (such as nozzle size, distance between the nozzle and the target, and environmental conditions), a higher spray velocity results in a larger spray range (because the droplets' kinetic energy increases, allowing them to travel further); conversely, a lower spray velocity results in a smaller spray range (because the droplets' kinetic energy decreases, causing them to fall faster or spread more limitedly).

[0050] In the automatic spraying equipment proposed in this embodiment, the spraying device 23 is connected to the water pipe 21 and the air pipe 22, which can mix water flow and gas to form a spray. The controller 25 adjusts the spray flow rate and spray speed by controlling the control valve 24, so as to realize the automatic and precise control of the spray, reduce manual operation, and improve production efficiency. Moreover, the automatic spraying equipment is located above the conveyor belt of the coating machine and is set between the machine head outlet and the oven inlet, rather than inside the oven, so as to avoid modifying the oven structure, reduce cost and installation complexity.

[0051] In summary, this embodiment provides a spraying device that is easy to install, low in cost, and can achieve automated and precise control.

[0052] In one feasible implementation, such as Figure 2 As shown, the spraying device 23 includes multiple atomizing nozzles ( Figure 2 It includes a first atomizing nozzle 23-1, a second atomizing nozzle 23-2 and a third atomizing nozzle 23-3, and the multiple atomizing nozzles are arranged along the width direction of the coating machine's belt.

[0053] The atomizing nozzle can be an ultrasonic atomizing nozzle, a high-pressure atomizing nozzle, a mechanical atomizing nozzle, a rotary atomizing nozzle, etc. The spraying device 23 includes multiple atomizing nozzles, each of which is connected to a water pipe 21 and an air pipe 22 through an independent pipe. The multiple atomizing nozzles are arranged along the width of the coating machine's belt. The spray from the multiple atomizing nozzles can evenly cover the width of the film 100 on the belt, avoiding the problem of uneven drying on both sides of the film 100 due to incomplete spraying.

[0054] In one feasible implementation, the positions of multiple atomizing nozzles are fixed. In this embodiment, the fixed positions of multiple nozzles result in a robust structure, easy maintenance, and suitability for standardized production lines. Furthermore, the fixed design prevents vibration-induced displacement, ensuring consistent spray trajectory, making it particularly suitable for high-speed coating lines.

[0055] It is achievable, such as Figure 2 As shown, there are three atomizing nozzles, including the first atomizing nozzle 23-1, the second atomizing nozzle 23-2, and the third atomizing nozzle 23-3. The distance between two adjacent atomizing nozzles is between 15cm and 25cm.

[0056] In this embodiment, the three atomizing nozzles are connected to the water pipe 21 and the air pipe 22 through independent pipes. The structure of the spraying device 23 is designed for the case where the membrane 100 includes three coating areas. Each atomizing nozzle sprays mist for one coating area. The width of the membrane 100 is about 75cm, and the width of one coating area is about 20cm. The distance between the center positions of two adjacent coating areas is between 15cm and 25cm. The atomizing nozzle is aligned with the center position in the width direction of the coating area. Therefore, the distance between two adjacent atomizing nozzles is between 15cm and 25cm, so that the mist sprayed by each atomizing nozzle covers the entire width direction of the coating area.

[0057] In this embodiment, the number of atomizing nozzles is optimized for the case where the diaphragm 100 includes three coating areas, to avoid spray overlap or gaps, and to balance equipment cost and coverage uniformity.

[0058] It is achievable, such as Figure 4 As shown, there are four atomizing nozzles, including the first atomizing nozzle 23-1, the second atomizing nozzle 23-2, the third atomizing nozzle 23-3, and the fourth atomizing nozzle 23-4. The distance between two adjacent atomizing nozzles is between 10cm and 20cm.

[0059] In this embodiment, the four atomizing nozzles are connected to the water pipe 21 and the air pipe 22 through independent pipes. The structure of the spraying device 23 is designed for the case where the membrane 100 includes four coating areas. Each atomizing nozzle sprays mist for one coating area. The width of the membrane 100 is about 75cm, and the width of one coating area is about 18cm. The distance between the center positions of two adjacent coating areas is between 10cm and 20cm. The atomizing nozzle is aligned with the center position in the width direction of the coating area. Therefore, the distance between two adjacent atomizing nozzles is between 10cm and 20cm, so that the mist sprayed by each atomizing nozzle covers the entire width direction of the coating area.

[0060] In this embodiment, the number of atomizing nozzles is optimized for the case where the diaphragm 100 includes four coating areas, so as to avoid spray overlap or gaps and balance equipment cost and coverage uniformity.

[0061] It is worth noting that the above Figure 2 and Figure 3 The number and distribution of the multiple atomizing nozzles shown are for illustrative purposes only. In actual applications, the number and distribution of atomizing nozzles can be adjusted according to actual needs. This embodiment does not describe them one by one.

[0062] In one feasible implementation, the positions of multiple atomizing nozzles are adjustable. In this embodiment, the adjustable positions of the multiple atomizing nozzles can flexibly adapt to product switching of different widths, reducing redundant equipment investment.

[0063] It is worth noting that each atomizing nozzle has an independent control switch (not shown in the attached diagram), and each atomizing nozzle can be turned on and off independently. In this way, the number and position of the activated atomizing nozzles can be adjusted according to the width of the film 100 and the position of the coating area, ensuring that films 100 of different widths can be evenly covered by the spray. For example, if there are four atomizing nozzles, their initial positions can be set as follows: Figure 3 As shown, this applies to a film 100 comprising four coating areas; the positions of the four atomizing nozzles are modified so that the positions of three of the atomizing nozzles are as follows. Figure 1 As shown, another atomizing nozzle is shut off and not in operation, thus applicable to the film 100 which includes three coating areas.

[0064] In one feasible implementation, such as Figure 2 and Figure 3 As shown, the control valve 24 includes a first control valve 241 and a second control valve 242; the first control valve 241 is disposed in the water pipe 21 and is used to regulate the flow rate of the water; the second control valve 242 is disposed in the air pipe 22 and is used to regulate the flow rate of the gas; the controller 25 controls the first control valve 241 to regulate the flow rate of the water pipe 21, thereby controlling the spray flow rate; and controls the second control valve 242 to regulate the flow rate of the gas, thereby controlling the spray speed.

[0065] In this embodiment, the control valve 24 is divided into a first control valve 241 and a second control valve 242. The first control valve 241 is installed in the water pipe 21 to independently regulate the water flow rate, and the second control valve 242 is installed in the air pipe 22 to independently regulate the gas flow rate, so as to avoid mutual interference between water and gas and enhance the regulation accuracy.

[0066] The controller 25 controls the first control valve 241 to adjust the flow rate of the water pipe 21, thereby controlling the spray flow rate. The flow rate of the water pipe 21 refers to the volume of liquid flowing through the cross-section of the pipe per unit time, representing the speed at which the liquid flows in the pipe, and is usually expressed in liters per minute (L / min) or cubic meters per second (m³ / s). The greater the flow rate of the water pipe 21, the greater the spray flow rate, and vice versa.

[0067] The controller 25 controls the second control valve 242 to adjust the gas flow rate, thereby controlling the injection speed. Gas flow rate refers to the volume of gas flowing through a cross-section of the pipe per unit time, commonly measured in milliliters per minute (mL / min) or meters per second (m / s). A higher gas flow rate results in a higher injection speed, and vice versa.

[0068] In one implementation, when the controller 25 receives the set flow rate value and the set flow velocity value, it controls the first control valve 241 to adjust the flow rate of the water pipe 21 so that the spray flow rate reaches the set flow rate value, and controls the second control valve 242 to adjust the gas flow velocity so that the spray flow velocity reaches the set flow velocity value.

[0069] The automated spraying device may also include a display (not shown in the attached diagram) showing a first interface, such as... Figure 4 As shown, the first interface includes input boxes for initial flow rate and initial flow velocity, as well as a "Start" button. When spraying needs to begin, the user enters the set flow rate value in the initial flow rate input box and the set flow velocity value in the initial flow velocity input box on the first interface, and then clicks the "Start" button. At this time, the controller 25 controls the first control valve 241 to adjust the flow rate of the water pipe 21 to the set flow rate value, and controls the second control valve 242 to adjust the gas flow velocity to the set flow velocity value. Then, the controller 25 controls the spraying device 23 to start spraying, realizing a one-button automatic spraying function. The initial flow rate and initial flow velocity values ​​can be set according to the belt speed of the coating machine.

[0070] It should be noted that the display and controller 25 can be integrated into the same device, such as a host computer or industrial computer.

[0071] In another implementation, after spraying begins, the controller 25 also controls the first control valve 241 to continue adjusting the flow rate of the water pipe 21 based on the humidity detection result of the oven.

[0072] After spraying begins, the controller 25 acquires the humidity detection result of the oven and adjusts the flow rate of the water pipe 21 and the gas flow rate based on the humidity detection result, forming a closed-loop control to maintain the stable humidity of the oven in real time and prevent over-spraying or under-spraying. For example, a humidity sensor is installed at the oven outlet or inside the oven. The controller 25 receives real-time humidity data. If the humidity is lower than the set value, the opening of the first control valve 241 is increased to increase the flow rate of the water pipe 21, thereby increasing the spray flow rate until the humidity reaches the target. Conversely, if the humidity is higher than the set value, the opening of the first control valve 241 is decreased to decrease the flow rate of the water pipe 21, thereby decreasing the spray flow rate until the humidity reaches the target.

[0073] In one feasible implementation, such as Figure 5As shown, control valve 24 also includes a third control valve 243. Figure 5 It includes a first sub-control valve 243-1, a second sub-control valve 243-2, and a third sub-control valve 243-3, with the third control valve 243 located in the spray device 23. Figure 5 The nozzles of the spray device 23 (including the first atomizing nozzle 23-1, the second atomizing nozzle 23-2, and the third atomizing nozzle 23-3) are used to control the nozzle size of the spray device 23; the controller 25 controls the third control valve 243 to adjust the nozzle size of the spray device 23, thereby controlling the spray flow rate.

[0074] In this embodiment, a third control valve 243 is added at the nozzle. The spray flow rate is controlled by adjusting the nozzle size. The controller 25 drives the third control valve 243 to change the nozzle diameter. Enlarging the nozzle can increase the spray area, while narrowing the nozzle can enhance the spray concentration. For example, narrowing the nozzle when the conveyor belt is narrow can avoid wasting spray.

[0075] When the controller 25 receives the set flow rate value, it not only controls the first control valve 241 to adjust the flow rate of the water pipe 21, but also controls the third control valve 243 to adjust the nozzle size. The first control valve 241 and the third control valve 243 work together to make the spray flow rate reach the set flow rate value. The third control valve 243 and the first control valve 241 work together to control the spray flow rate.

[0076] In one feasible implementation, the controller 25 controls the third control valve 243 based on the humidity measurement results of the oven.

[0077] In this embodiment, after spraying begins, the controller 25 acquires the humidity detection result of the oven and controls the third control valve 243 based on the oven humidity detection result to adjust the nozzle size of the spray device 23, forming a closed-loop control to maintain stable oven humidity in real time and prevent over-spraying or under-spraying. For example, a humidity sensor is installed at the oven outlet or inside the oven. The controller 25 receives real-time humidity data. If the humidity is lower than the set value, the nozzle size of the spray device 23 is increased to increase the spray flow rate until the humidity reaches the target; conversely, if the humidity is higher than the set value, the nozzle size of the spray device 23 is decreased to decrease the spray flow rate until the humidity reaches the target.

[0078] like Figure 5 As shown, the spraying device 23 includes multiple atomizing nozzles, namely a first atomizing nozzle 23-1, a second atomizing nozzle 23-2, and a third atomizing nozzle 23-3; the third control valve 243 includes multiple sub-control valves, namely a first sub-control valve 243-1, a second sub-control valve 243-2, and a third sub-control valve 243-3; each atomizing nozzle has a sub-control valve at its nozzle opening, and the controller 25 independently controls each sub-control valve, and can independently adjust the opening size of each sub-control valve to achieve differentiated spraying.

[0079] For example, the temperature is higher and the moisture evaporates faster at the sides of the diaphragm 100 near the oven, while the temperature is lower and the moisture evaporates slower at the middle. If it is necessary to ensure that the entire area of ​​the diaphragm 100 does not crack after drying, the amount of spray applied to the sides of the diaphragm 100 near the oven must be greater than the amount of spray applied to the middle area. Therefore, the controller 25 can control the nozzle size of the atomizing nozzles near the sides of the oven to be larger and the nozzle size of the atomizing nozzles in the middle to be smaller.

[0080] It is worth noting that, Figure 5 The number of sub-control valves shown is for illustrative purposes only. The number of sub-control valves can be increased or decreased according to actual needs, and is not limited to what is shown in the attached figure.

[0081] In one feasible implementation, such as Figure 6 As shown, the automatic spraying equipment also includes: a switch valve 26 for controlling the opening and closing of the water pipe 21 and the air pipe 22; and a controller 25 for controlling the opening and closing of the switch valve 26 based on the set start and end times to achieve timed automatic spraying.

[0082] It is worth noting that the switching valve 26 includes a first sub-switching valve 261 and a second sub-switching valve 262. The first sub-switching valve 261 is located on the water pipe 21, and the second sub-switching valve 262 is located on the air pipe 22. The controller 25 controls the opening and closing of the first sub-switching valve 261 and the second sub-switching valve 262 simultaneously based on the set start and end times.

[0083] Yes, a second interface can be displayed on the monitor, such as... Figure 7 As shown, the second interface includes input boxes for initial flow rate, initial flow rate, start time, and end time, as well as a "Complete" button. The user enters the set flow rate in the initial flow rate input box, the set flow rate in the initial flow rate input box, the spray start time in the start time input box, and the spray stop time in the end time input box, then clicks the "Complete" button. Thus, when the controller 25 determines that the spray start time has been reached, it controls the first control valve 241 to adjust the flow rate of the water pipe 21 to the set flow rate value, and controls the second control valve 242 to adjust the gas flow rate to the set flow rate value. Then, the controller 25 controls the spray device 23 to start spraying. When the controller 25 determines that the spray stop time has been reached, it controls the spray device 23 to stop spraying, achieving timed automatic spraying.

[0084] The start and end times can be set based on the coating time of the coating machine. For example, after the coating machine starts coating, the coating is uneven in the first 0-200 meters, resulting in a thin and uneven coating thickness. Only after 200 meters can the coating be evenly applied, resulting in a thicker and more uniform coating. Therefore, after drying, the first 0-200 meters of the film 100 is prone to cracking or powdering. Thus, the start and end times of spraying can be determined based on the coating time of the first 0-200 meters, spraying only the first 0-200 meters of the film 100, thereby reducing equipment idling losses. Alternatively, the start and end times of spraying can also be determined directly based on the start and stop times of the coating machine.

[0085] In one feasible implementation, such as Figure 8 As shown, the automatic spraying equipment also includes: a protective cover 27, the bottom of which has an opening, the length of which is the same as the width of the coating machine's belt; and a spraying device 23 located on the inner side of the top cover or the inner surface of the side wall of the protective cover 27, with the nozzle of the spraying device 23 aligned with the opening.

[0086] As shown in the figure, a protective cover 27 is added, and a spraying device 23 is located inside the top cover or the inner surface of the side wall of the protective cover 27. This prevents the spray from spreading to non-target areas and keeps the environment clean. Furthermore, the bottom of the protective cover 27 has an opening, the length of which is the same as the width of the coating machine's conveyor belt. The nozzle of the spraying device 23 is aligned with the opening, and the opening is aligned with the conveyor belt, achieving concentrated spray coverage of the conveyor belt and improving utilization.

[0087] In this embodiment, the width of the opening is greater than or equal to the width of the conveyor belt, ensuring that the spray fully covers the width of the membrane 100 on the conveyor belt.

[0088] It is achievable, such as Figure 8 As shown, water pipe 21 and air pipe 22 are installed inside protective cover 27. A water receiving trough 28 is added below water pipe 21 and spray device 23 to collect water droplets and prevent water leakage from water pipe 21 or spray device 23 from affecting the quality of diaphragm 100.

[0089] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. An automatic spraying device, characterized in that, The automatic spraying device is positioned between the coating machine head and the drying oven, and above the conveyor belt of the coating machine; the automatic spraying device includes: Water pipes for supplying water flow and gas pipes for supplying gas; A spray device that connects the water pipe and the air pipe is used to mix the water flow and the gas to form a spray. Control valve, the control valve being used to regulate spray flow rate and spray speed; A controller is used to control the control valve to adjust the spray flow rate and the spray speed.

2. The automatic spraying device as described in claim 1, characterized in that, The control valve includes a first control valve and a second control valve; The first control valve is installed in the water pipe and is used to regulate the flow rate of the water. The second control valve is located in the gas pipe and is used to regulate the flow rate of the gas; The controller controls the first control valve to adjust the flow rate of the water pipe, thereby controlling the spray flow rate; and controls the second control valve to adjust the flow rate of the gas, thereby controlling the spray speed.

3. The automatic spraying device as described in claim 1 or 2, characterized in that, The control valve also includes a third control valve, which is located at the nozzle of the spray device and is used to control the size of the nozzle of the spray device. The controller controls the third control valve to adjust the nozzle size of the spray device, thereby controlling the spray flow rate.

4. The automatic spraying device as described in claim 3, characterized in that, The controller controls the third control valve based on the humidity measurement results of the oven.

5. The automatic spraying device as described in any one of claims 1 to 4, characterized in that, The device also includes: a switching valve for controlling the opening and closing of the water pipe and the gas pipe; The controller controls the opening and closing of the switching valve based on the set start and end times.

6. The automatic spraying device as described in any one of claims 1 to 5, characterized in that, The spraying device includes multiple atomizing nozzles, which are arranged along the width direction of the coating machine's belt.

7. The automatic spraying device as described in claim 6, characterized in that, The positions of the multiple atomizing nozzles are fixed.

8. The automatic spraying device as described in claim 7, characterized in that, The number of atomizing nozzles is 4, and the distance between two adjacent atomizing nozzles is between 10cm and 20cm; Alternatively, the number of atomizing nozzles is three, and the distance between two adjacent atomizing nozzles is between 15cm and 25cm.

9. The automatic spraying device as described in claim 6, characterized in that, The positions of the multiple atomizing nozzles are adjustable.

10. The automatic spraying device as described in any one of claims 1 to 9, characterized in that, The equipment also includes a protective cover, the bottom of which has an opening, the length of which is the same as the width of the belt of the coating machine. The spraying device is located on the inner side of the top cover or the inner surface of the side wall of the protective cover, and the nozzle of the spraying device is aligned with the opening.

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