Linear velocity calculation mechanism for roller coating equipment
By acquiring, calculating, and predicting roll coating data, the linear speed of the roll coating equipment is controlled, solving the problem of the difficulty in evaluating the linear speed parameter in roll coating equipment, and improving the uniformity and quality of the roll coating effect.
Patent Information
- Application Number
- CN202511129521.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-13
- Publication Date
- 2025-11-18
AI Technical Summary
In existing roller coating equipment, it is difficult to accurately evaluate the linear speed parameter during the roller coating process, resulting in uneven and inconsistent roller coating effects.
The first roll coating data of the workpiece surface is acquired by the acquisition unit, the roll coating difference is calculated by the calculation unit, and the linear speed is predicted by the prediction unit. The control unit controls the second roller to perform roll coating treatment, so as to achieve accurate prediction and correction of the roll speed.
This resulted in a more uniform and consistent roller coating effect on the workpiece surface, thus improving the quality of the roller coating.
Smart Images
Figure CN120961382A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of roll coating production, in particular to a line speed calculation mechanism for a roll coating device. BACKGROUND
[0002] The roll coating machine is also called roll coater. It is a device for coating a certain amount of paint on a planar material by using a group of rotating rollers. By adjusting the roll coating speed reasonably, the roll coating effect of the paint on the planar material can be effectively guaranteed.
[0003] In the existing roll coating device, the roll coating line speed parameter is difficult to accurately evaluate during the roll coating process of the workpiece, so that no matter how to control the roll speed, the uniform roll coating effect cannot be achieved, which has a certain impact on the roll coating use of the mechanical roll coating device. SUMMARY
[0004] The present application provides a line speed calculation mechanism for a roll coating device to solve the technical problem that the roll coating line speed parameter is difficult to accurately evaluate, so that no matter how to control the roll speed, the uniform roll coating effect cannot be achieved.
[0005] To achieve the above-mentioned and other related purposes, the present application provides a line speed calculation mechanism for a roll coating device, comprising: an acquisition unit configured to acquire first roll coating data of a workpiece surface, the first roll coating data being obtained after the workpiece is roll coated by a first rotating roller; a first calculation unit configured to compare the first roll coating data with standard roll coating data and calculate a first roll coating difference therebetween; a prediction unit configured to obtain a roll coating prediction line speed of the first rotating roller for the first roll coating difference according to the first roll coating difference and a first roll speed of the first rotating roller; and a control unit configured to control the second rotating roller to perform roll coating processing on a corresponding position of the first roll coating data based on the roll coating prediction line speed.
[0006] In an embodiment of the present application, the acquisition unit comprises: a data monitoring subunit arranged in multiple numbers along the width direction of the workpiece and configured to comprehensively cover and monitor the workpiece surface along the width direction to acquire roll coating monitoring data, wherein the first roll coating data comprises at least one of roll coating color depth data and roll coating thickness data; a boundary identification subunit configured to identify the boundaries of the roll coating detection data to obtain roll coating boundaries; and a shearing subunit configured to shear the roll coating monitoring data according to the roll coating boundaries to acquire the first roll coating data of the workpiece surface.
[0007] In an embodiment of the present application, the data monitoring subunit comprises at least one of a laser thickness gauge and a color sensor.
[0008] In an embodiment of the present application, the first computing unit comprises: a first difference computing subunit configured to compute the difference between each of the first roll coating data and the standard roll coating data to obtain a difference value corresponding to each of the first roll coating data; and a first roll coating difference evaluating subunit configured to score the first roll coating data according to the difference value and a weight corresponding to each of the difference value, to determine a first roll coating difference of the first roll coating data.
[0009] In an embodiment of the present application, the second difference computing subunit comprises: a second difference computing module configured to compute the difference between each of the difference value and a corresponding difference threshold value to obtain a difference result value; a score computing sub-module configured to compute a comprehensive score according to the difference result value and a weight corresponding to each of the difference value; and a difference output sub-module configured to output the difference value as the first roll coating difference and output to the prediction unit when the comprehensive score is greater than a score threshold value.
[0010] In an embodiment of the present application, the prediction unit comprises: a base number computing subunit configured to obtain a first roll coating base number according to the first roll coating data and the first roll speed of the first roll; and a linear velocity prediction subunit configured to perform roll coating linear velocity prediction according to the first roll coating base number and the first roll coating difference, to obtain a roll coating predicted linear velocity of the second roll to the first roll coating difference.
[0011] In an embodiment of the present application, the base number computing subunit comprises: an actual linear velocity computing module configured to obtain an actual roll coating linear velocity of the first roll to the workpiece according to the first roll coating data; and a base number evaluating module configured to evaluate the first roll coating base number of the workpiece according to the first roll speed of the first roll and the actual roll coating linear velocity.
[0012] In an embodiment of the present application, the linear velocity prediction subunit comprises: a coefficient prediction module configured to predict a roll coating coefficient corresponding to the first roll coating difference according to the first roll coating data, the first roll coating base number and the first roll coating difference through a prediction model, to obtain the roll coating coefficient corresponding to the first roll coating difference; a base number conversion module configured to obtain a second roll coating base number corresponding to the second roll according to the first roll coating data and the roll coating coefficient; and a linear velocity generation module configured to compute a roll coating predicted linear velocity of the second roll to the first roll coating difference according to the second roll coating base number and the first roll coating difference.
[0013] In an embodiment of the present application, the control unit comprises: an instruction generation subunit configured to generate a second roller speed for the second roller according to the roller coating prediction linear velocity; and a sending subunit configured to send the second roller speed to the second roller to control the second roller to perform roller coating on the corresponding position of the first roller coating data.
[0014] In an embodiment of the present application, the control unit further comprises: an output unit configured to obtain second roller coating data of the workpiece surface after being coated by the second roller, wherein the second roller coating data is obtained after being coated by the second roller based on the second roller speed; a second calculation unit configured to compare the second roller coating data with the standard roller coating data and continue to calculate the second roller coating difference between the two; a roller speed updating unit configured to correct the first roller speed based on the second roller coating difference, the first roller speed and the second roller speed to obtain a corrected roller speed; and a roller speed correction unit configured to send the corrected roller speed to the first roller to control the first roller to perform roller coating on the subsequent batch of workpieces.
[0015] The present application has the following advantages: the linear velocity calculation mechanism for the roller coating equipment can accurately predict the roller coating effect of the workpiece surface by the second roller after the first roller coating data of the workpiece surface after being coated by the first roller is obtained, the first roller coating difference between the first roller coating data and the corresponding standard roller coating data of the workpiece surface is calculated, and the roller coating prediction linear velocity of the second roller is calculated. In addition, after the second roller coating is completed, the second roller coating data of the workpiece surface after being coated by the second roller is further monitored to feedback the accuracy of the roller coating prediction linear velocity. Then, the first roller speed of the first roller is directly corrected by using the second roller coating data to accurately control the roller coating effect by using a single roller and improve the roller coating quality. BRIEF DESCRIPTION OF DRAWINGS
[0016] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the present application. It is to be understood that the drawings are designed solely for purposes of illustration to be used in conjunction with the above description, and not as a definition of the present application. As such, other drawings, having the same or similar elements as those shown in the figures could be derived from the figures without paying creative effort.
[0017] In the drawings:
[0018] Figure 1 The structural block diagram of the linear velocity calculation mechanism for the roller coating equipment provided by the embodiments of the present application is shown in the figure.
[0019] Figure 2A flowchart diagram of a line speed calculation method for a roll coating device is shown.
[0020] Reference signs are as follows:
[0021] The acquisition unit 111, the first calculation unit 112, the prediction unit 113, and the control unit 114. DETAILED DESCRIPTION
[0022] The present application can also be embodied in a different way or be applied to other different embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application. The following embodiments and features in the embodiments can be combined with each other without conflict.
[0023] It should be noted that the diagrams provided in the following embodiments only schematically illustrate the basic concept of the present application, and the drawings only show the components related to the present application, not the number, shape, and size of the components when actually implemented. The actual implementation of each component can be randomly changed in shape, number, and proportion, and the layout pattern of the components can be more complex.
[0024] In the following description, a large number of details are discussed to provide a more thorough explanation of the embodiments of the present application, however, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details, and in other embodiments, the known structures and devices are shown in the form of block diagrams rather than in the form of details to avoid making the embodiments of the present application difficult to understand.
[0025] Please refer to Figure 1 The present application provides a line speed calculation mechanism for a roll coating device, comprising: an acquisition unit 111, configured to acquire first roll coating data of a workpiece surface, the first roll coating data being obtained after the workpiece is roll coated by a first rotating roller; a first calculation unit 112, configured to compare the first roll coating data with standard roll coating data, and calculate a first roll coating difference therebetween; a prediction unit 113, configured to obtain a roll coating prediction line speed of the first roll coating difference by a second rotating roller according to the first roll coating difference and a first roll speed of the first rotating roller; and a control unit 114, configured to control the second rotating roller to perform roll coating processing on a corresponding position of the first roll coating data based on the roll coating prediction line speed.
[0026] In the process of roll coating treatment of the workpiece by the roll coating device, in order to better roll coat the workpiece according to the roll coating line speed, the first roll coating data of the workpiece surface coated by the first rotating roller can be collected by the acquisition unit 111. Then, the first roll coating difference between the first roll coating data and the corresponding standard roll coating data of the workpiece surface is calculated by the first calculation unit 112. Further, the roll coating prediction line speed of the second rotating roller for the secondary roll coating of the workpiece surface is predicted by the prediction unit 113 in combination with the first roll speed of the first rotating roller. Finally, the roll coating prediction line speed is sent to the control unit 114 to control the roll coating treatment of the corresponding position of the workpiece surface by the second rotating roller, so that the roll coating effect of the roll coated workpiece surface can be better and more uniform, the roll coating effect of the workpiece surface can be better and more uniform, and the roll coating quality can be ensured.
[0027] In the line speed calculation mechanism for the roll coating device, the acquisition unit 111 comprises: a data monitoring subunit arranged along the width direction of the workpiece for comprehensive coverage monitoring of the workpiece surface along the width direction to obtain roll coating monitoring data, wherein the first roll coating data comprises at least one of roll coating color depth data and roll coating thickness data; a boundary identification subunit for identifying the roll coating boundary from the roll coating detection data; and a shearing subunit for shearing the roll coating data of the roll coating monitoring data according to the roll coating boundary to obtain the first roll coating data of the workpiece surface.
[0028] The data monitoring subunit can realize comprehensive coverage monitoring along the width direction of the workpiece during the movement of the workpiece to obtain roll coating monitoring data. Of course, in order to ensure comprehensive coverage monitoring of the workpiece, a plurality of data monitoring subunits can be arranged along the width direction of the workpiece. The roll coating boundary can be determined based on the obtained roll coating detection data by the boundary identification subunit. For example, the position where the roll coating color depth data is obviously different from other areas, or the position where the roll coating thickness is obviously inconsistent with other areas. Then, the roll coating data of the roll coating boundary of the roll coating monitoring data is sheared by the shearing subunit, and the first roll coating data of the workpiece surface can be obtained.
[0029] Preferably, the data monitoring subunit comprises at least one of a laser thickness gauge and a color sensor. Of course, the data monitoring subunit can also be other sensors.
[0030] In the line speed calculation mechanism for the roll coating device, the first calculation unit 112 comprises: a first difference calculation subunit configured to calculate the difference between each of the first roll coating data and the standard roll coating data in each unit segment to obtain a corresponding item difference of each of the first roll coating data; and a first roll coating difference evaluation subunit configured to score the first roll coating data according to the item difference and a corresponding weight of each of the item difference to determine a first roll coating difference of the first roll coating data.
[0031] The first roll coating data in each unit segment can be calculated by the first difference calculation subunit to determine the corresponding item difference of each of the first roll coating data. Then, the first roll coating difference evaluation subunit can score the first roll coating data by combining the item difference and the corresponding weight of each of the item difference to calculate the first roll coating difference of the first roll coating data. The product of each item difference and the corresponding weight of each item difference is calculated to obtain the score of each item difference, and the first roll coating difference of the first roll coating data is determined based on the scores of all item differences.
[0032] The second difference calculation subunit comprises: a second difference calculation module configured to calculate the difference between each of the item difference and a corresponding difference threshold value to obtain a difference result value; a score calculation submodule configured to calculate a comprehensive score according to the difference result value and the corresponding weight of each of the item difference; and a difference output submodule configured to output the item difference as the first roll coating difference to the prediction unit 113 when the comprehensive score is greater than a score threshold value.
[0033] The second difference calculation module can calculate the difference between each of the item difference and a corresponding difference threshold value to obtain a difference result value. Then, the score calculation submodule can calculate a comprehensive score according to the difference result value and the corresponding weight of each of the item difference, that is, the product of each item difference and the corresponding weight of each item difference is calculated to obtain the score of each item difference, and the comprehensive score is obtained by adding all the scores based on the scores of all item differences. The difference output submodule can calculate the item difference as the first roll coating difference and send it to the prediction unit 113 when the comprehensive score is greater than a score threshold value, so as to realize the prediction of the roll coating prediction line speed of the first roll coating difference by the prediction unit 113.
[0034] In the line speed calculation mechanism for the roll coating device, the prediction unit 113 comprises: a base number calculation subunit, configured to obtain a first roll coating base number according to the first roll coating data and the first roll speed of the first roll; and a line speed prediction subunit, configured to perform roll coating line speed prediction according to the first roll coating base number and the first roll coating difference, to obtain a roll coating prediction line speed of the second roll to the first roll coating difference.
[0035] When the prediction unit 113 predicts the roll coating prediction line speed of the first roll coating difference, the base number calculation subunit can calculate the first roll coating base number by using the obtained first roll coating data and the first roll speed of the first roll. Then, the line speed prediction subunit can perform roll coating line speed prediction based on the calculated first roll coating base number and the first roll coating difference obtained by comparing the first roll coating data with the standard roll coating data, to obtain the roll coating prediction line speed of the second roll, and output control of the second roll.
[0036] Further, the base number calculation subunit comprises: an actual line speed calculation module, configured to obtain an actual roll coating line speed of the workpiece by the first roll according to the first roll coating data; and a base number evaluation module, configured to evaluate the first roll coating base number of the workpiece according to the first roll speed of the first roll and the actual roll coating line speed.
[0037] The actual line speed calculation module can be used to obtain the actual roll coating line speed of the workpiece by the first roll using the first roll coating data. Specifically, the first roll coating data can be used as a feature, and the actual roll coating line speed can be used as a label to construct a training set. Then, a basic model is used for model training to obtain a prediction model. Then, the newly obtained first roll coating data is input into the prediction model to predict the actual roll coating line speed of the workpiece by the first roll. The base number evaluation module can be used to evaluate the first roll coating base number of the workpiece according to the first roll speed of the first roll and the actual roll coating line speed, so as to predict the roll coating prediction line speed using the first roll coating base number.
[0038] Specifically, the line speed prediction subunit comprises: a coefficient prediction module, configured to predict a roll coating coefficient corresponding to the first roll coating difference by a prediction model according to the first roll coating data, the first roll coating base number and the first roll coating difference, to obtain the roll coating coefficient corresponding to the first roll coating difference; a base number conversion module, configured to obtain a second roll coating base number corresponding to the second roll according to the first roll coating data and the roll coating coefficient; and a line speed generation module, configured to calculate a roll coating prediction line speed of the second roll to the first roll coating difference according to the second roll coating base number and the first roll coating difference.
[0039] The roll coating coefficient can be predicted by the coefficient prediction module using the first roll coating data, the first roll coating base and the first roll coating difference, so that the roll coating coefficient corresponding to the first roll coating difference can be obtained. Specifically, the roll coating data, the roll coating base, the roll coating difference and the corresponding roll coating coefficient calibration table can be established. After the roll coating data, the roll coating base and the roll coating difference are input, the corresponding roll coating coefficient can be directly obtained. Then, after obtaining the roll coating coefficient, the roll coating base conversion module is combined with the first roll coating data to calculate the second roll coating base corresponding to the second roll, and the line speed generation module is combined with the first roll coating difference to obtain the roll coating prediction line speed of the first roll coating difference to the second roll.
[0040] In the line speed calculation mechanism for the roll coating equipment, the control unit 114 includes an instruction generation subunit for generating a second roll speed of the second roll according to the roll coating prediction line speed, and a sending subunit for sending the second roll speed to the second roll to control the second roll to perform roll coating processing on the corresponding position of the first roll coating data.
[0041] The instruction generation subunit can be used to obtain the second roll speed of the second roll by table lookup based on the roll coating prediction line speed. Then, the sending subunit is used to send the second roll speed to the second roll to control the roll coating speed of the second roll, so that secondary roll coating can be performed on the corresponding position after the first roll coating to improve the roll coating effect.
[0042] In addition, the line speed calculation mechanism for the roll coating equipment also includes an output unit for obtaining the second roll coating data after the workpiece surface is roll coated by the second roll, wherein the second roll coating data is obtained after the second roll is roll coated based on the second roll speed; a second calculation unit for comparing the second roll coating data with the standard roll coating data and continuing to calculate the second roll coating difference between them; a roll speed updating unit for roll speed correction of the first roll based on the second roll coating difference, the first roll speed and the second roll speed to obtain a corrected roll speed; and a roll speed correction unit for sending the corrected roll speed to the first roll to control the first roll to perform roll coating processing on the subsequent batch of workpieces.
[0043] The output unit can be used to obtain the second roll coating data after the workpiece surface is roll coated by the second roll, and then the second calculation unit can be used to calculate the second roll coating difference between the second roll coating data and the standard roll coating data. The roll speed updating unit can be used to correct the original first roll speed to obtain a corrected roll speed, and the roll speed correction unit can be used to correct the first roll, so that the first roll can be directly used for roll coating to meet the corresponding roll coating effect.
[0044] Referring to 2, the application also provides a line speed calculation method for a roll coating device, comprising the following steps:
[0045] Step S10: obtaining first roll coating data of the workpiece surface by the obtaining unit 111, wherein the first roll coating data is obtained after the workpiece is roll coated by the first rotating roller;
[0046] Step S20: comparing the first roll coating data with standard roll coating data by the first calculation unit 112, and calculating a first roll coating difference between the two;
[0047] Step S30: obtaining a roll coating prediction line speed of the first rotating roller for the first roll coating difference according to the first roll coating difference and a first roll speed of the first rotating roller by the prediction unit 113;
[0048] Step S40: controlling the second rotating roller to perform roll coating processing on the corresponding position of the first roll coating data based on the roll coating prediction line speed by the control unit 114.
[0049] In summary, the line speed calculation mechanism for the roll coating device disclosed in the application can realize accurate prediction of the roll coating effect of the workpiece surface by the second rotating roller through the following steps: obtaining the first roll coating data of the workpiece surface after roll coating by the first rotating roller, calculating the first roll coating difference between the first roll coating data and the corresponding standard roll coating data of the workpiece surface, and then calculating the roll coating prediction line speed of the second rotating roller. In addition, after roll coating by the second rotating roller, the second roll coating data of the workpiece surface after roll coating by the second rotating roller is further monitored to realize direct correction of the first roll speed of the first rotating roller by using the second roll coating data, so that the roll coating effect can be controlled more accurately by using a single roller, and the roll coating quality is improved. Therefore, the application effectively overcomes various shortcomings in the prior art and has high industrial utilization value.
[0050] The above embodiments only exemplarily illustrate the principles and effects of the application, and are not used to limit the application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the application. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical thought disclosed in the application should be covered by the claims of the application.
Claims
1. A linear velocity calculation mechanism for a roller coating equipment, characterized in that, include: The acquisition unit is used to acquire first roll coating data of the workpiece surface, which is obtained by the first rotating roller coating the workpiece. The first calculation unit is used to compare the first roll coating data with the standard roll coating data and calculate the first roll coating difference between the two. The prediction unit is used to obtain the predicted linear velocity of the second roller in response to the first roller coating difference based on the first roller coating difference and the first roller speed of the first roller. as well as The control unit is used to control the second roller to perform roller coating on the corresponding position that forms the first roller coating data, based on the roller coating predicted linear speed.
2. The linear velocity calculation mechanism for roller coating equipment according to claim 1, characterized in that, The acquisition unit includes: The data monitoring subunit is provided in multiple ways along the width direction of the workpiece, and is used to perform comprehensive monitoring of the workpiece surface along the width direction to obtain roller coating monitoring data. The first roller coating data includes at least one of roller coating color depth data and roller coating thickness data. A boundary recognition subunit is used to perform boundary recognition on the roll coating detection data to obtain the roll coating boundary; and The shearing subunit is used to shear the roll coating monitoring data according to the roll coating boundary to obtain the first roll coating data on the workpiece surface.
3. The linear velocity calculation mechanism for roller coating equipment according to claim 2, characterized in that, The data monitoring subunit includes at least one of a laser thickness gauge and a color sensor.
4. The linear velocity calculation mechanism for roller coating equipment according to claim 1, characterized in that, The first computing unit includes: The first difference calculation subunit is used to calculate the difference between each item of the first roll coating data in each unit segment and the standard roll coating data, to obtain the item difference value corresponding to each item of the first roll coating data; and The first roll coating difference assessment subunit is used to score the first roll coating data according to the item difference value and the weight corresponding to each item difference value, so as to determine the first roll coating difference of the first roll coating data.
5. The linear velocity calculation mechanism for a roller coating equipment according to claim 2, characterized in that, The second difference calculation subunit includes: The second difference calculation module is used to calculate the difference between each item difference and the corresponding difference threshold to obtain the difference result value. The scoring calculation submodule is used to calculate a comprehensive score based on the difference result value and the weight corresponding to each item difference; and The difference output submodule is used to output the item difference as the first roll coating difference to the prediction unit when the comprehensive score is greater than the score threshold.
6. The linear velocity calculation mechanism for a roller coating equipment according to claim 1, characterized in that, The prediction unit includes: A base calculation subunit is used to obtain a first roll coating base number based on the first roll coating data and the first roll speed of the first rotating roll; and The linear velocity prediction subunit is used to predict the linear velocity of the roll coating based on the first roll coating base number and the first roll coating difference, so as to obtain the predicted linear velocity of the second roll coating relative to the first roll coating difference.
7. The linear velocity calculation mechanism for a roller coating equipment according to claim 6, characterized in that, The radix calculation subunit includes: The actual linear velocity calculation module is used to obtain the actual linear velocity of the first roller on the workpiece based on the first roller coating data; and The base evaluation module is used to evaluate the first roll coating base of the workpiece based on the first roll speed of the first roller and the actual roll coating line speed.
8. The linear velocity calculation mechanism for a roller coating equipment according to claim 6, characterized in that, The linear velocity prediction subunit includes: The coefficient prediction module is used to predict the roll coating coefficient corresponding to the first roll coating difference based on the first roll coating data, the first roll coating base number and the first roll coating difference, and obtain the roll coating coefficient corresponding to the first roll coating difference through a prediction model. The base conversion module is used to obtain the second roll coating base corresponding to the second roll based on the first roll coating data and the roll coating coefficient; and The linear velocity generation module is used to calculate the predicted linear velocity of the second roll to the first roll coating difference based on the second roll coating base number and the first roll coating difference.
9. The linear velocity calculation mechanism for a roller coating equipment according to claim 1, characterized in that, The control unit includes: An instruction generation subunit is configured to generate a second roll speed for the second rotating roll based on the predicted linear speed of the roll coating; and The transmitting subunit is used to transmit the second roller speed to the second rotating roller to control the second rotating roller to perform roller coating processing on the corresponding position that forms the first roller coating data.
10. The linear velocity calculation mechanism for a roller coating equipment according to claim 1, characterized in that, Also includes: An output unit is used to acquire second roll coating data after the second roller coats the workpiece surface, wherein the second roll coating data is obtained by the second roller after roll coating based on a second roller speed; The second calculation unit compares the second roll coating data with the standard roll coating data and continues to calculate the difference between the two roll coating data. A roller speed update unit is configured to correct the roller speed of the first rotating roller based on the second roller coating difference, the first roller speed, and the second roller speed, to obtain a corrected roller speed; and A roller speed correction unit is used to send the corrected roller speed to the first rotating roller to control the first rotating roller to perform roller coating on subsequent batches of workpieces.