Coating die health inspection method, apparatus and system, and storage medium

Abstract

A coating die health inspection method, comprising: step S101, on the basis of first distance data between a first position of a coating die (01) and a back roller (02) and second distance data between a second position of the coating die (01) and the back roller (02), obtaining a first parameter representing the wear of the coating die (01) and a second parameter representing the parallelism between the coating die (01) and the back roller (02); and step S102, determining the health of the coating die (01) on the basis of the first parameter and the second parameter. Real-time health inspection of the coating die is achieved, and the inspection efficiency is high. Further provided are a coating die health inspection apparatus and system, an electronic device, and a computer-readable storage medium.

Description

Coating die head health detection method, device, system and storage medium

[0001] This application claims priority. The application number of the prior application is: 202311734262.6, and the name is: Coating die head health detection method, device, system and storage medium, and the priority date is: 2023-12-15. Technical Field

[0002] The present application belongs to the technical field of coating equipment, and specifically relates to a coating die head health detection method, device, system and storage medium. Background Art

[0003] The coating die is a crucial component of coating equipment, directly impacting coating quality and efficiency. Wear and tear can occur with increasing use, impacting coating results and potentially leading to increased production costs and equipment downtime for repairs. Therefore, health monitoring of die wear is crucial.

[0004] Conventional methods for checking the health of coating dies primarily rely on manually measuring dimensional changes or detecting changes in coating liquid flow to infer die wear. On the one hand, manual testing requires stopping the coating process and disassembling the die, which impacts production efficiency. On the other hand, manual testing is periodic and cannot detect die wear in real time. This can cause substandard dies to continue operating, resulting in substandard products and impacting product quality. Therefore, manual testing of coating die health is subject to lag and low detection efficiency.

[0005] It should be noted that the above statements are only used to provide background technical information related to this application and do not necessarily constitute prior art.

[0006] Summary of the Invention

[0007] In view of the above problems, the embodiments of the present application propose a coating die health detection method, device, system and storage medium. The present application can specifically solve the problem of low efficiency of the existing coating die health detection method.

[0008] The present application proposes a coating die health detection method, which includes: obtaining a first parameter characterizing the amount of wear of the coating die and a second parameter characterizing the parallelism between the coating die and the back roller based on first distance data between a first position of the coating die and a back roller, and second distance data between a second position of the coating die and the back roller; and determining the health of the coating die based on the first parameter and the second parameter.

[0009] By using the above-mentioned method of obtaining the first distance data and the second distance data in real time, there is no need to stop the mechanical operation, which will not affect the production efficiency and has high detection efficiency. The first distance data and the second distance data are used to obtain the first parameter characterizing the wear amount of the coating die and the second parameter characterizing the parallelism between the coating die and the back roller. Since the wear amount of the coating die and the parallelism between the coating die and the back roller are important parameters reflecting the health of the coating die, the health of the coating die is determined based on the first parameter and the second parameter with high accuracy.

[0010] In some embodiments of the present application, the first parameter characterizing the wear amount of the coating die is obtained based on the first distance data between the first position of the coating die and the back roller, and the second distance data between the second position of the coating die and the back roller, including: obtaining the change of the first distance data according to the first distance data at the initial moment and the first distance data at the current moment; obtaining the change of the second distance data according to the second distance data at the initial moment and the second distance data at the current moment; calculating the mean of the change of the first distance data and the change of the second distance data, and taking the mean as the first parameter.

[0011] The above embodiment can improve the calculation accuracy of the first parameter.

[0012] In some embodiments of the present application, the second parameter characterizing the parallelism between the coating die and the back roller is obtained based on the first distance data between the first position of the coating die and the back roller, and the second distance data between the second position of the coating die and the back roller, including: calculating the absolute value of the difference between the first distance data at the current moment and the second distance data at the current moment, and using the absolute value of the difference as the second parameter.

[0013] In this embodiment, the absolute value of the difference is used as the second parameter, which can more accurately characterize the parallelism between the coating die head and the backing roller, thereby improving the accuracy of the detection result.

[0014] In some embodiments of the present application, the health of the coating die is determined based on the first parameter and the second parameter, including: obtaining a health value of the coating die according to the first parameter, the second parameter and a preset weight, wherein the health value represents the health of the coating die.

[0015] The health value of the coating die head obtained by the first parameter, the second parameter and the preset weight can characterize the health of the coating die head to a great extent and is highly representative.

[0016] In some embodiments of the present application, the method further includes obtaining the wear rate of the coating die based on at least one of the historical health value, historical first distance data, and historical second distance data of the coating die; and predicting the remaining usage time of the current coating die based on the wear rate.

[0017] This embodiment can predict the remaining service life of the current coating die head, thereby effectively guiding on-site personnel to purchase spare parts to avoid unplanned downtime and improve production efficiency.

[0018] In some embodiments of the present application, the method further includes: determining that the coating die head is in an unhealthy state when the change in the first distance data or the change in the second distance data is greater than or equal to a preset threshold.

[0019] By detecting the wear on one side of the coating die head, the uneven coating phenomenon caused by excessive wear on one side of the coating die head can be reduced.

[0020] In some embodiments of the present application, the method further includes: upon receiving an operating signal from the coating die, executing the step of acquiring first distance data between the first position of the coating die and the back roller, and second distance data between the second position of the coating die and the back roller, wherein the first distance data is obtained based on a first sensor installed at the first position of the coating die, and the second distance data is obtained based on a second sensor installed at the second position of the coating die.

[0021] It can obtain real-time data of the coating die head during operation, increase the amount of effective data, and reduce the amount of calculation.

[0022] In some embodiments of the present application, the method further includes: generating and displaying health status display information of the coating die head based on the first distance data and the second distance data of the coating die head; wherein the health status display information includes one or more of a first distance change trend graph, a second distance change trend graph, a parallelism change trend graph between the coating die head and the back roller, and a coating die head health value change trend graph.

[0023] It can help staff to intuitively detect the health status of the coating die head.

[0024] In the second aspect, a coating die health detection device is also provided, which includes: a calculation module for obtaining a first parameter characterizing the wear amount of the coating die and a second parameter characterizing the parallelism between the coating die and the back roller based on first distance data between the first position of the coating die and the back roller, and second distance data between the second position of the coating die and the back roller; a health detection module for determining the health of the coating die based on the first parameter and the second parameter.

[0025] In a third aspect, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method described in the first aspect.

[0026] In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored, and the program is executed by a processor to implement any method described in the first aspect.

[0027] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0029] FIG1 is a flow chart showing a coating die health detection method provided in an embodiment of the present application;

[0030] FIG2 is a schematic diagram showing the positional relationship between a coating die head and a backing roller provided in an embodiment of the present application;

[0031] FIG3 shows a coating die health value change trend diagram provided in an embodiment of the present application;

[0032] FIG4 shows a first distance change trend diagram provided by an embodiment of the present application;

[0033] FIG5 shows a parallelism variation trend diagram provided by an embodiment of the present application;

[0034] FIG6 shows a schematic structural diagram of a coating die health detection system provided in an embodiment of the present application;

[0035] FIG7 shows a schematic structural diagram of an electronic device provided by an embodiment of the present application;

[0036] FIG8 is a schematic diagram showing a storage medium provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0039] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0040] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0042] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0043] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0044] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0045] Currently, industrial production requires the use of coating equipment to produce materials with specific functions. The coating die is a very important component of coating equipment, which directly affects the coating quality and efficiency. The coating die consists of an upper die head and a lower die head. The upper die head has an upper lip and the lower die head has a lower lip. The slurry is extruded from the upper and lower lips by the power provided by the screw pump. The deformation of the upper lip can be adjusted by adjusting the lip screw of the upper die head to adjust the weight, thereby controlling the coating thickness of the slurry.

[0046] However, when the slurry flows out of the lip, the fluid constantly rubs against the lip, causing varying degrees of wear on the lips of the upper and lower die heads. As the coating die head is used for an increasing period of time, the degree of wear will become greater and greater, and the gap between the coating die head and the backing roller will also become larger and larger, resulting in an increasingly thick coating thickness, affecting the coating quality. As the wear continues, the staff will manually adjust the installation structure of the coating die head according to the coating thickness, and then control the distance between the coating die head and the backing roller to meet the requirements of coating weight consistency. However, due to the influence of mechanical installation accuracy, as well as external factors such as inconsistent wear and mechanical vibration, the coating die head and the backing roller cannot be completely parallel. As the coating die head is used for an increasing period of time, the coating die head will deviate further and further from the optimal state, and the coating weight consistency will become worse and worse. Therefore, it is particularly important to inspect the health of the coating die head.

[0047] Conventional technologies primarily monitor the health of coating dies by manually measuring dimensional changes or detecting changes in coating liquid flow to infer die wear. This manual testing requires stopping the coating process and disassembling the die, impacting production efficiency. Furthermore, manual testing is periodic and cannot accurately monitor die wear in real time. This can cause substandard dies to continue operating, resulting in substandard products and negatively impacting product quality. Consequently, manual testing of coating die health is subject to lag and low efficiency.

[0048] Based on this, this embodiment provides a coating die health detection method. It obtains two distance data between the preset position of the coating die and the backing roller. The change in each distance data and the change in the difference between the two distance data are used to evaluate the wear of the coating die and the parallelism between the coating die and the backing roller, thereby determining the health of the coating die. It can achieve real-time detection of the coating die health. Compared with manual detection, this embodiment has higher detection efficiency and sufficient data support, so this embodiment has higher detection accuracy and reliability.

[0049] The coating die health detection method provided in this embodiment can be applied in coating scenarios. A substrate is placed between the coating die and a backing roller. The backing roller is driven by a motor to transport the substrate. The coating die is used to apply slurry to the moving substrate, thereby obtaining a coated product with slurry. For example, in the lithium battery manufacturing process, coating technology is used to produce battery electrodes.

[0050] For the convenience of description, the following embodiments are described by taking the coating die head of one embodiment of the present application for manufacturing battery pole pieces as an example.

[0051] FIG1 is a flow chart of a coating die health detection method provided in an embodiment of the present application. As shown in FIG1 , the coating die health detection method includes the following steps:

[0052] S101. Based on the first distance data between the first position of the coating die and the back roller, and the second distance data between the second position of the coating die and the back roller, obtain a first parameter characterizing the wear amount of the coating die and a second parameter characterizing the parallelism between the coating die and the back roller.

[0053] S102: Determine the health of the coating die based on the first parameter and the second parameter.

[0054] The execution subject of the embodiment of the present application may be an electronic device capable of detecting the health status of the coating die head, and the electronic device may include but is not limited to a terminal or a server.

[0055] The first position and the second position are positions of both ends of the coating die, respectively. For example, the first position is the left end of the coating die, and the second position is the right end of the coating die.

[0056] Figure 2 shows a schematic diagram of the positional relationship between a coating die and a back roller provided in an embodiment of the present application. As shown in Figure 2, the coating die 01 is arranged parallel to the back roller, and the coating die 01 is arranged opposite to the back roller 02. The first sensor 03 and the second sensor 04 are respectively provided at both ends of the coating die 01. The first sensor 03 and the second sensor 04 are respectively installed at the first position and the second position at both ends of the coating die 01. The detection signal emission directions of the first sensor 03 and the second sensor 04 are both perpendicular to the back roller 02. In this way, the first distance data between the first position of the coating die and the back roller 02 can be obtained by the first sensor 03, and the second distance data between the second position of the coating die and the back roller 02 can be obtained by the second sensor 04.

[0057] As shown in FIG2 , when the coating die 01 is working, the slurry in the slurry flow channel is coated on the substrate 05 to form multiple coating areas. The distance between the coating die 01 and the backing roller 02 can determine the slurry thickness in the coating area.

[0058] The first parameter characterizes the wear of the coating die. In one example, the wear can be the wear on one side of the coating die, for example, the wear on the side where the first position of the coating die is located, or the wear on the side where the second position of the coating die is located. The average wear of the coating die as a whole can also be calculated.

[0059] The second parameter characterizes the parallelism between the coating die and the back roller. It can be understood that when the coating die is a newly installed coating die, its positional relationship with the back roller is parallel, that is, at the initial moment, the first distance data and the second distance data are the same, but as the coating die wears, the first distance data and the second distance data will deviate. Therefore, the parallelism of the current coating die and the back roller, that is, the second parameter, can be calculated based on the initial first distance data, the initial second distance data, the real-time first distance data and the real-time second distance data.

[0060] Since the first parameter represents the amount of wear on the coating die, and the second parameter represents the parallelism between the coating die and the backing roller, both can reflect the current wear condition of the coating die. Therefore, the health of the coating die can be determined with high accuracy by the first and second parameters.

[0061] By using the above-mentioned method of obtaining the first distance data and the second distance data in real time, there is no need to stop the mechanical operation, which will not affect the production efficiency and has high detection efficiency. The first distance data and the second distance data are used to obtain the first parameter characterizing the wear amount of the coating die and the second parameter characterizing the parallelism between the coating die and the back roller. Since the wear amount of the coating die and the parallelism between the coating die and the back roller are important parameters reflecting the health of the coating die, the health of the coating die is determined based on the first parameter and the second parameter with high accuracy.

[0062] In some embodiments of the present application, based on the first distance data between the first position of the coating die and the back roller, and the second distance data between the second position of the coating die and the back roller, a first parameter characterizing the wear amount of the coating die is obtained, including: obtaining the change of the first distance data according to the first distance data at the initial moment and the first distance data at the current moment; obtaining the change of the second distance data according to the second distance data at the initial moment and the second distance data at the current moment; calculating the average of the change of the first distance data and the change of the second distance data, and taking the average as the first parameter.

[0063] Ideally, the coating die is parallel to the back roller, and the first distance data at the initial moment is equal to the second distance data at the initial moment. However, considering mechanical errors, this embodiment can obtain the first distance data at the initial moment and the second distance data at the initial moment respectively after the coating die is installed.

[0064] The variation of the first distance data is obtained according to the first distance data at the initial moment and the first distance data at the current moment, which can represent the variation of the first position of the coating die head relative to the backing roller.

[0065] According to the second distance data at the initial moment and the second distance data at the current moment, a change in the second distance data is obtained, which can represent a change in the second position of the coating die head relative to the backing roller.

[0066] The coating die is a solid object of a certain length. To improve the accuracy of the calculation results, this embodiment uses the average of the change in the first distance data and the change in the second distance data as the first parameter. In other words, this embodiment uses the average of the wear on the left and right sides of the coating die as the overall wear of the coating die, thereby improving the accuracy of the calculation of the coating die health.

[0067] The above embodiment can improve the calculation accuracy of the first parameter.

[0068] In some embodiments of the present application, based on the first distance data between the first position of the coating die and the back roller, and the second distance data between the second position of the coating die and the back roller, a second parameter characterizing the parallelism between the coating die and the back roller is obtained, including: calculating the absolute value of the difference between the first distance data at the current moment and the second distance data at the current moment, and taking the absolute value of the difference as the second parameter.

[0069] When the coating die head is parallel to the back roller, the first distance data and the second distance data are equal. When the coating die head is not parallel to the back roller, the first distance data and the second distance data are not equal. Therefore, if the difference between the first distance data at the current moment and the second distance data at the current moment is 0, it indicates that the coating die head is parallel to the back roller. If the difference between the first distance data at the current moment and the second distance data at the current moment is not 0, it indicates that the coating die head and the back roller are not parallel. The specific degree of deviation can be reflected according to the absolute value of the difference between the first distance data at the current moment and the second distance data at the current moment.

[0070] Therefore, this embodiment uses the absolute value of the difference as the second parameter, which can more accurately characterize the parallelism between the coating die head and the backing roller, thereby improving the accuracy of the detection result.

[0071] In some embodiments of the present application, the health of the coating die is determined based on the first parameter and the second parameter, including: obtaining a health value of the coating die according to the first parameter, the second parameter and a preset weight, wherein the health value represents the health of the coating die.

[0072] The first parameter characterizes the amount of wear of the coating die, and the second parameter characterizes the parallelism between the coating die and the back roller. Both the amount of wear and the parallelism are important indicators of the health of the coating die. In one example, preferably, the preset weights of the first parameter and the second parameter are the same, that is, the weighted ratio of the first parameter to the second parameter is 1:1.

[0073] In another example, the preset weights may also be manually set according to actual production conditions, which is not specifically limited here.

[0074] At this point, the health value of the coating die head obtained through the first parameter, the second parameter and the preset weight can characterize the health of the coating die head to a great extent and is highly representative.

[0075] In some embodiments of the present application, the coating die health detection method also includes: obtaining the wear rate of the coating die based on at least one of the historical health value, historical first distance data, and historical second distance data of the coating die, and predicting the remaining usage time of the current coating die based on the wear rate.

[0076] In some scenarios, the staff will only discover that the coating die head is no longer usable when the coating die head is severely worn and causes an unexpected shutdown. However, the unexpected shutdown has already occurred. The sudden shutdown requires the staff to spend time preparing a new coating die head, causing great losses to production.

[0077] The working environment of the coating die heads on the same production line is basically the same. Therefore, the embodiment of the present application calculates the wear rate of the coating die head through at least one of the historical health value, historical first distance data, and historical second distance data of the coating die head, and predicts the remaining usage time of the current coating die head based on the wear rate.

[0078] For example, according to the process in Figure 1, the health value of the coating die can be periodically recorded to obtain the coating die health value change trend chart shown in Figure 3. In this health value change trend chart, the horizontal axis is time and the vertical axis is the coating die health value. The wear rate of the coating die can be obtained based on the difference between the initial health value and the health value at the time of replacement in the historical health value of the coating die and the time span between them. Since the environment of the same production line is the same and the model of the coating die is the same, the wear rate can be used to predict the remaining service life of the current coating die.

[0079] As shown in Figure 3, the health value of the coating die head decreases with time, and after the die head is replaced, its health value approaches 100.

[0080] When calculating the wear rate of the coating die based on the historical first distance data and the historical second distance data, the wear rate can be obtained based on the time required for the change in the first distance data to reach a preset threshold value from 0, and the preset threshold value, or the wear rate can be obtained based on the time required for the change in the second distance data to reach a preset threshold value from 0, and the preset threshold value.

[0081] That is, the slope value can be obtained as the wear rate by the target change amount allowed in the life cycle of the coating die and the actual time.

[0082] This embodiment can predict the remaining service life of the current coating die head, thereby effectively guiding on-site personnel to purchase spare parts to avoid unplanned downtime and improve production efficiency.

[0083] In some embodiments of the present application, the coating die health detection method further includes: determining that the coating die is in an unhealthy state when the change in the first distance data or the change in the second distance data is greater than or equal to a preset threshold.

[0084] If the change in the first distance data or the change in the second distance data is greater than or equal to the preset threshold, it means that the unilateral wear of the coating die head has exceeded the preset threshold of the wear of the coating die head. At this time, the coating die head can no longer meet the requirements of the consistency of the coating weight, and it is determined that the coating die head is in an unhealthy state.

[0085] By detecting the wear on one side of the coating die head, the uneven coating phenomenon caused by excessive wear on one side of the coating die head can be reduced.

[0086] In some embodiments of the present application, the coating die health detection method further includes: upon receiving an operating signal from the coating die, executing the steps of obtaining first distance data between a first position of the coating die and a back roller, and second distance data between a second position of the coating die and the back roller.

[0087] The first distance data is obtained based on a first sensor installed at a first position of the coating die head, and the second distance data is obtained based on a second sensor installed at a second position of the coating die head. The first sensor and the second sensor are shown in FIG2 .

[0088] When the operation signal of the coating die is received, the steps of obtaining the first distance data and the second distance data are executed, so that the real-time data of the coating die during operation can be obtained, thereby increasing the amount of effective data and reducing the amount of calculation.

[0089] In some embodiments of the present application, the coating die health detection method further includes: generating and displaying health status information of the coating die based on the first distance data and the second distance data of the coating die. The health status display information includes one or more of a first distance change trend graph, a second distance change trend graph, a parallelism change trend graph between the coating die and the backing roller, and a coating die health value change trend graph.

[0090] The first distance variation trend graph may have time as the horizontal axis and the real-time value of the first distance data as the vertical axis, to obtain the first distance variation trend graph as shown in FIG4 .

[0091] Similarly, the second distance change trend graph can be obtained by taking time as the horizontal axis and the real-time value of the second distance data as the vertical axis to obtain the first distance change trend graph.

[0092] As the coating die head is used, it tilts, that is, the coating die head is no longer parallel to the back roller, and the end where the first sensor is located is getting closer and closer to the back roller, while the end where the second sensor is located is getting farther and farther away from the back roller. The first distance data is getting smaller and smaller, and the second distance data is getting larger and larger. Therefore, as shown in Figure 4, the first distance data is getting smaller and smaller. After replacing the die head, the first distance data is within the preset range again.

[0093] FIG5 shows a parallelism change trend diagram provided by an embodiment of the present application. It can be understood that the second parameter of this embodiment is the absolute value of the difference between the first distance data at the current moment and the second distance data at the current moment, which can characterize the change in the parallelism of the coating die head. In order to better show the height of the two ends of the coating die head, the parallelism change trend diagram of this embodiment can be directly represented by the difference between the first distance data at the current moment and the second distance data at the current moment, that is, as shown in FIG5 , with time as the horizontal axis and the difference between the first distance data at the current moment and the second distance data at the current moment as the vertical axis, a parallelism change trend diagram as shown in FIG5 is obtained. For example, if the difference between the first distance data at the current moment and the second distance data at the current moment is 5, which is a positive number, it means that the first distance data is greater than the second distance data, which means that the end of the coating die head where the first sensor is located is far away from the back roller, which can more realistically show the actual situation of the coating die head.

[0094] Generating different health status display information can help staff to intuitively detect the health status of the coating die head.

[0095] In the embodiments of the present application, real-time detection of the health of the coating die is achieved. Compared with traditional measurement methods, this method does not require manual measurement, reduces workload, and can improve the detection efficiency of the health of the coating die. It can monitor and evaluate the wear of the die in real time, guide staff to take timely measures to repair or replace it, and improve coating quality and production efficiency. It can accurately predict the remaining service life of the die when it reaches the replacement wear specification, guide staff to prepare spare parts and plan replacement work in advance, and avoid production losses caused by unexpected downtime.

[0096] The above description of the various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced with each other and will not be repeated herein for the sake of brevity.

[0097] The following is a specific example to illustrate the coating die health detection method in some embodiments of the present application. The first distance data is obtained in real time by the first sensor, and the second distance data is obtained in real time by the second sensor. The change of the first distance data is obtained based on the first distance data at the initial moment and the first distance data at the current moment; the change of the second distance data is obtained based on the second distance data at the initial moment and the second distance data at the current moment; the mean of the change of the first distance data and the change of the second distance data is calculated, and the mean is used as the first parameter. The absolute value of the difference between the first distance data at the current moment and the second distance data at the current moment is calculated, and the absolute value of the difference is used as the second parameter. Based on the first parameter, the second parameter and the preset weight, the health value of the coating die is obtained, and the coating die health value distribution diagram shown in Figure 3 is obtained.

[0098] In one example, data on coating dies in the entire plant can be obtained, thereby enabling detection of the health status of coating dies in the entire plant.

[0099] In one example, assuming that the maximum threshold of the wear of the coating die is 30 μm, the time required for the change in the first distance data from 0 to 30 μm can be used as the life reference period of the coating die, thereby predicting the remaining service life of the coating die.

[0100] One or more of the first distance change trend graph, the second distance change trend graph, the parallelism change trend graph between the coating die head and the back roller, and the coating die head health value change trend graph can also be generated and displayed based on the first distance data and the second distance data.

[0101] It can be seen that the method of the embodiment of the present application does not require manual measurement, reduces workload, and can improve the efficiency of detecting the health of the coating die. It can monitor and evaluate the wear of the die in real time, guide staff to take timely measures to repair or replace it, and improve coating quality and production efficiency. It can accurately predict the remaining service life of the die when it reaches the replacement wear specification, guide staff to prepare spare parts and plan replacement work in advance, and avoid production losses caused by unexpected downtime.

[0102] The above description of the various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced with each other and will not be repeated herein for the sake of brevity.

[0103] Some embodiments of the present application also provide a coating die health detection system. Referring to Figure 6, the coating die health detection system 60 includes: a coating die 01, a first sensor 03, a second sensor 04, a back roller 02 and a processor 06; the first sensor 03 and the second sensor 04 are respectively installed at the first position and the second position at both ends of the coating die 01, and the coating die 01 is arranged opposite to the back roller 02. The detection signal emission directions of the first sensor 03 and the second sensor 04 are both perpendicular to the back roller 02.

[0104] When the coating die 01 is in operation, the slurry in the slurry flow channel is coated on the substrate 05 to form multiple coating areas. The distance between the coating die 01 and the backing roller 02 can determine the slurry thickness in the coating area.

[0105] The first sensor 03 is used to obtain first distance data between the first position and the backing roller 02. The second sensor is used to obtain second distance data between the second position and the backing roller 02. The processor 06 is used to obtain a first parameter representing the amount of wear on the coating die and a second parameter representing the parallelism between the coating die and the backing roller based on the first and second distance data, and to determine the health of the coating die based on the first and second parameters.

[0106] In some embodiments of the present application, the processor 06 is further used to obtain a change in the first distance data based on the first distance data at the initial moment and the first distance data at the current moment; obtain a change in the second distance data based on the second distance data at the initial moment and the second distance data at the current moment; calculate the average of the change in the first distance data and the change in the second distance data, and use the average as the first parameter.

[0107] In some embodiments of the present application, the processor 06 is further configured to calculate an absolute value of a difference between the first distance data at a current moment and the second distance data at a current moment, and use the absolute value of the difference as the second parameter.

[0108] In some embodiments of the present application, the processor 06 is further configured to obtain a health value of the coating die according to the first parameter, the second parameter and a preset weight, wherein the health value represents the health of the coating die.

[0109] In some embodiments of the present application, the processor 06 is also used to obtain the wear rate of the coating die based on at least one of the historical health value, historical first distance data, and historical second distance data of the coating die; and predict the remaining usage time of the current coating die based on the wear rate.

[0110] In some embodiments of the present application, the processor 06 is further configured to determine that the coating die head is in an unhealthy state when the change in the first distance data or the change in the second distance data is greater than or equal to a preset threshold.

[0111] In some embodiments of the present application, the processor 06 is also used to execute the steps of obtaining first distance data between the first position of the coating die and the back roller, and second distance data between the second position of the coating die and the back roller when receiving the operating signal of the coating die, wherein the first distance data is obtained based on a first sensor installed at the first position of the coating die, and the second distance data is obtained based on a second sensor installed at the second position of the coating die.

[0112] In some embodiments of the present application, the processor 06 is also used to generate and display health status display information of the coating die head based on the first distance data and the second distance data of the coating die head; wherein, the health status display information includes one or more of a first distance change trend graph, a second distance change trend graph, a parallelism change trend graph between the coating die head and the back roller, and a coating die head health value change trend graph.

[0113] The coating die health detection system provided in the above-mentioned embodiment of the present application and the method provided in the embodiment of the present application are based on the same inventive concept and have the same beneficial effects as the method adopted, run or implemented by the application program stored therein.

[0114] Another embodiment of the present application further provides an electronic device for performing the above-mentioned coating die health detection method. Please refer to Figure 7, which shows a schematic diagram of an electronic device provided by some embodiments of the present application. As shown in Figure 7, the electronic device 20 includes: a processor 200, a memory 201, a bus 202, and a communication interface 203. The processor 200, the communication interface 203, and the memory 201 are connected via the bus 202; the memory 201 stores a computer program that can be executed on the processor 200, and when the processor 200 executes the computer program, it executes the method provided by any of the aforementioned embodiments of the present application.

[0115] The memory 201 may include high-speed random access memory (RAM) and may also include non-volatile memory, such as at least one disk storage. The system network element communicates with at least one other network element via at least one communication interface 203 (which may be wired or wireless), and may utilize the Internet, a wide area network, a local area network, a metropolitan area network, or the like.

[0116] The bus 202 may be an ISA bus, a PCI bus, or an EISA bus. The bus may be divided into an address bus, a data bus, a control bus, and the like. The memory 201 is used to store programs, and the processor 200 executes the programs upon receiving execution instructions. The coating die health detection method disclosed in any of the aforementioned embodiments of the present application may be applied to or implemented by the processor 200.

[0117] The processor 200 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method can be completed by hardware integrated logic circuits in the processor 200 or by software instructions. The above processor 200 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in conjunction with the embodiments of this application can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory 201 , and the processor 200 reads the information in the memory 201 and completes the steps of the above method in combination with its hardware.

[0118] The electronic device provided in the embodiment of the present application and the coating die head health detection method provided in the embodiment of the present application are based on the same application concept and have the same beneficial effects as the methods adopted, operated or implemented by them.

[0119] An embodiment of the present application also provides a computer-readable storage medium corresponding to the coating die health detection method provided in the aforementioned embodiment. Please refer to Figure 8, which shows that the computer-readable storage medium is a CD 30, on which a computer program (i.e., a program product) is stored. When the computer program is run by the processor, it will execute the coating die health detection method provided in any of the aforementioned embodiments.

[0120] It should be noted that examples of the computer-readable storage medium may also include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other optical or magnetic storage media, which are not listed here one by one.

[0121] The computer-readable storage medium provided in the above-mentioned embodiments of the present application and the coating die health detection method provided in the embodiments of the present application are based on the same application concept and have the same beneficial effects as the methods adopted, run or implemented by the application programs stored therein.

[0122] It should be noted that:

[0123] In the above text, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0124] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0125] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A coating die health detection method, wherein: The method comprises: Based on first distance data between a first position of the coating die head and the backing roller, and second distance data between a second position of the coating die head and the backing roller, a first parameter characterizing the wear amount of the coating die head and a second parameter characterizing the parallelism between the coating die head and the backing roller are obtained; Based on the first parameter and the second parameter, the health of the coating die is determined.

2. The coating die health detection method according to claim 1, wherein: The first parameter characterizing the wear amount of the coating die head is obtained based on the first distance data between the first position of the coating die head and the back roller, and the second distance data between the second position of the coating die head and the back roller, including: Obtaining a change amount of the first distance data according to the first distance data at an initial moment and the first distance data at a current moment; Obtaining a change amount of the second distance data according to the second distance data at an initial moment and the second distance data at a current moment; Calculate the average of the change in the first distance data and the change in the second distance data, and use the average as the first parameter.

3. The coating die health detection method according to claim 1 or 2, wherein: The method of obtaining a second parameter characterizing the parallelism between the coating die head and the backing roller based on the first distance data between the first position of the coating die head and the backing roller and the second distance data between the second position of the coating die head and the backing roller comprises: The absolute value of the difference between the first distance data at the current moment and the second distance data at the current moment is calculated, and the absolute value of the difference is used as the second parameter.

4. The coating die health detection method according to any one of claims 1 to 3, wherein: Based on the first parameter and the second parameter, determining the health of the coating die head includes: According to the first parameter, the second parameter and the preset weight, a health value of the coating die head is obtained, and the health value represents the health degree of the coating die head.

5. The method according to any one of claims 1 to 4, wherein: The method further comprises: Obtaining a wear rate of the coating die head according to at least one of a historical health value, a historical first distance data, and a historical second distance data of the coating die head; Based on the wear rate, the remaining useful life of the current coating die is predicted.

6. The coating die health detection method according to any one of claims 1 to 5, wherein: The method further comprises: When the change amount of the first distance data or the change amount of the second distance data is greater than or equal to a preset threshold, it is determined that the coating die head is in an unhealthy state.

7. The coating die health detection method according to any one of claims 1 to 6, wherein: The method further comprises: When receiving the operating signal of the coating die, the steps of acquiring first distance data between a first position of the coating die and a back roller, and second distance data between a second position of the coating die and the back roller are performed, wherein the first distance data is obtained based on a first sensor installed at the first position of the coating die, and the second distance data is obtained based on a second sensor installed at the second position of the coating die.

8. The coating die health detection method according to any one of claims 1 to 7, wherein: The method further comprises: Based on the first distance data and the second distance data of the coating die head, generating and displaying health status display information of the coating die head; The health status display information includes one or more of a first distance change trend graph, a second distance change trend graph, a parallelism change trend graph between a coating die head and a back roller, and a coating die head health value change trend graph.

9. A coating die health detection device, wherein: The device comprises: A calculation module, for obtaining a first parameter characterizing the wear amount of the coating die head and a second parameter characterizing the parallelism between the coating die head and the backing roller based on first distance data between a first position of the coating die head and the backing roller and second distance data between a second position of the coating die head and the backing roller; The health detection module is used to determine the health of the coating die based on the first parameter and the second parameter.

10. A coating die health detection system, wherein: include: A coating die head, a first sensor, a second sensor, a backing roller and a processor; the first sensor and the second sensor are respectively installed at a first position and a second position at two ends of the coating die head, the coating die head is arranged opposite to the backing roller, and the detection signal emission directions of the first sensor and the second sensor are perpendicular to the backing roller; The first sensor is used to obtain first distance data between the first position and the back roller; The second sensor is used to obtain second distance data between the second position and the back roller; The processor is used to obtain a first parameter characterizing the amount of wear of the coating die head and a second parameter characterizing the parallelism between the coating die head and the back roller based on the first distance data and the second distance data; and determine the health of the coating die head based on the first parameter and the second parameter.

11. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: The processor runs the computer program to implement the coating die health detection method as described in any one of claims 1-8.

12. A computer-readable storage medium having a computer program stored thereon, wherein: The program is executed by a processor to implement the coating die health detection method as described in any one of claims 1-8.

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