Roll-to-roll laser cutting apparatus alignment calibration control method

Abstract

The application discloses a roll-to-roll laser cutting equipment alignment calibration control method and relates to the technical field of automatic control. The method comprises the following steps: obtaining a roll material correction calibration parameter based on a digital twin model; obtaining correction calibration positions corresponding to roll materials of different lengths based on the roll material correction calibration parameter; and after performing offset correction, performing calibration control on the roll material after correction based on the correction parameter and the correction calibration position. The application is used to solve the problem that in the existing roll-to-roll laser cutting equipment alignment calibration control method, residual error processing of long-distance continuous processing of roll materials can only repeat global mechanical correction or adopt unified global compensation parameters, and defects in the roll material cannot be screened after correction, resulting in poor consistency of the cutting positions of the whole roll of products after correction.

Description

Technical Field

[0001] This invention relates to the field of automation control technology, specifically to a method for alignment and calibration control of roll-to-roll laser cutting equipment. Background Technology

[0002] Roll-to-roll laser cutting equipment is an automated laser processing equipment developed for roll materials. It can realize integrated continuous processing throughout the entire process and is a special upgraded product of laser cutting technology for roll material production scenarios. The alignment and calibration control of roll-to-roll laser cutting equipment is the core control technology to ensure cutting accuracy in continuous roll material processing. Its main function is to correct the positional offset and deformation of the material in real time during the movement process, and solve the problem of large cutting size error in high-speed continuous production.

[0003] Existing methods for alignment and calibration control in roll-to-roll laser cutting equipment typically involve marking reference points at the laser cutting location. Based on the deformation and displacement data corresponding to these reference points, the cutting head is controlled to cut the roll material. The shape of the cut material is then used to pre-align the cutting head for the next alignment. While this improved method allows for pre-alignment during laser cutting and reduces product deformation compensation, it suffers from limitations in handling residual errors during long-distance continuous processing of roll materials. It relies on repeated global mechanical correction or the use of uniform global compensation parameters, failing to screen for localized over-correction and under-correction defects caused by tension disturbances in the roll material after correction. This results in poor consistency in the cutting position of the entire roll product after correction and a low yield rate. For example, patent application CN121798192A discloses a roll-to-roll laser cutting method... The online alignment and trajectory interpolation control method for cutting equipment analyzes the interpolation trajectory of the cutting head through an interpolation algorithm and controls the cutting head to cut the film according to the interpolation trajectory. This allows for pre-alignment of the product and compensation for product deformation. Other improvements to the alignment calibration control method for roll-to-roll laser cutting equipment usually focus on improving the alignment accuracy of laser cutting. However, in terms of handling residual errors in long-distance continuous processing of roll materials, there are still problems such as only being able to repeat global mechanical correction or using uniform global compensation parameters. It is impossible to screen for local over-correction and under-correction defects caused by tension disorder in the roll material after correction. This results in poor consistency of the cutting position of the entire roll product after correction and a low yield rate after cutting. Therefore, it is necessary to improve the existing alignment calibration control method for roll-to-roll laser cutting equipment. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in the prior art by proposing a roll-to-roll laser cutting equipment alignment and calibration control method. This method addresses the issue that existing roll-to-roll laser cutting equipment alignment and calibration control methods, in terms of handling residual errors during long-distance continuous processing of roll materials, can only repeatedly perform global mechanical correction or use uniform global compensation parameters. This method is unable to screen for local over-correction and under-correction defects caused by tension disturbances in the roll material after correction, resulting in poor consistency of the cutting position of the entire roll product after correction and a low yield rate after cutting.

[0005] To achieve the above objectives, this application provides a method for alignment and calibration control of roll-to-roll laser cutting equipment, comprising the following steps: A digital twin model of the roll-to-roll laser cutting equipment is constructed using digital twins, and the alignment record analysis method is used to obtain the roll material correction and calibration parameters based on the digital twin model. All roll material correction calibration parameters are analyzed, and based on the analysis results, the correction calibration positions corresponding to roll materials of different lengths and the preset correction angles for each correction calibration position are obtained. Based on the preset correction angles of all correction calibration positions corresponding to rolls of different lengths, the full-angle calibration positions and redundant calibration positions corresponding to rolls of different lengths are obtained respectively, and the correction calibration positions are updated based on the full-angle calibration positions and redundant calibration positions. When the roll-to-roll laser cutting equipment is running, after performing offset correction, the equipment performs corrected calibration control on the roll material based on the correction parameters and the corresponding correction calibration position of the roll material. The correction parameters are the parameters corresponding to the operation performed by the equipment during offset correction.

[0006] Furthermore, constructing a digital twin model of the roll-to-roll laser cutting equipment using digital twins includes: Based on the dimensional data of all components in the roll-to-roll laser cutting equipment, a model of the roll-to-roll laser cutting equipment is constructed using digital twins. A motion control mapping module and a roll material dynamics simulation module are integrated into the model. The resulting model is denoted as the cutting twin model. The dimensional data includes length data, width data, and height data. Based on the historical cutting records of the roll-to-roll laser cutting equipment, the lengths of all rolls placed in the roll-to-roll laser cutting equipment are obtained, and all lengths are recorded as the roll sample lengths.

[0007] Furthermore, the roll material correction and calibration parameters obtained using the alignment record analysis method based on the digital twin model include: For any roll sample length, based on the record of the roll cutting the roll with a length equal to the roll sample length by the roll-to-roll laser cutting equipment, the maximum offset angle of the roll when the roll is corrected in the record is obtained and recorded as the maximum reference angle of the roll sample length. The maximum offset angle is the maximum angle formed by the longitudinal side of the roll and the movement direction of the conveyor belt. Obtain the maximum reference angle for all roll sample lengths.

[0008] Furthermore, positional record analysis includes: For any roll sample length: k values ​​are uniformly obtained in the interval (0, C], and denoted as twin analysis angles LF1 to LF2 respectively. k Where C is the maximum reference angle of the roll sample length; Perform k laser cutting simulations sequentially for all twin analysis angles, and obtain all correction calibration parameters corresponding to each twin analysis angle after the k laser cutting simulations; record the correction calibration parameters of all twin analysis angles as the roll material correction calibration parameters of the roll material sample length.

[0009] Furthermore, the laser cutting simulation includes: For any twin analysis perspective LF t In the twin model of cutting, a roll of material with a length equal to that of the sample is simulated for cutting. During the cutting process, the longitudinal side of the roll is tilted until the angle between the longitudinal side of the roll and the direction of movement of the conveyor belt is the twin analysis angle LF. t , where t is a positive integer less than or equal to k and greater than or equal to 1; When the angle between the longitudinal side of the roll material and the direction of movement of the conveyor belt is the twin analysis angle LF t At that time, the web material is controlled by the correction control module equipped in the cutting twin model.

[0010] Furthermore, laser cutting simulation also includes: When the correction control ends, the positional relationship between the roll and the conveyor belt is obtained, and the area where the longitudinal side of the roll is not parallel to the direction of movement of the conveyor belt is recorded as the correction area. The position of each correction zone in the roll material is obtained and recorded as the correction position; the maximum angle formed by the longitudinal side of the roll material in the correction zone and the direction of movement of the conveyor belt is recorded as the offset angle. All correction positions and the corresponding offset angles for each correction position are denoted as the twin analysis angle LF. t Corrected calibration parameters.

[0011] Furthermore, all roll material correction calibration parameters were analyzed, and based on the analysis results, the correction calibration positions corresponding to different roll material lengths and the preset correction angles for each correction calibration position were obtained, including: For any twin analysis angle of any roll sample length, LF t After marking k laser cutting simulations in a roll α of length equal to the sample length, the twin analysis angle LF is determined. t All corresponding correction and adjustment positions; For any correction position A in the roll material α, when the correction position A does not coincide with any other correction position, the correction position A is recorded as the correction calibration position, and the offset angle of the correction calibration position is recorded as the preset correction angle. When the correction position A coincides with any correction position B, the area where the correction position A and the correction position B coincide is recorded as the correction calibration position, and the average of the offset angle of the correction position A and the offset angle of the correction position B is recorded as the preset correction angle of the correction calibration position. Obtain the correction calibration positions corresponding to all twin analysis angles of the roll sample length, as well as the preset correction angle for each correction calibration position.

[0012] Furthermore, the correction calibration parameters of all roll materials are analyzed, and based on the analysis results, the correction calibration positions corresponding to different lengths of roll materials and the preset correction angles for each correction calibration position are obtained, including: For any roll sample length: mark the correction calibration positions corresponding to all twin analysis angles of the roll sample length in roll α with a length equal to the roll sample length; When any region β1 in the roll material α satisfies condition X1, region β1 is recorded as the full-angle calibration region; when any region β2 in the roll material α satisfies condition X2, region β2 is recorded as the invalid calibration region. Condition X1 is: the number of correction calibration positions that overlap with region β1 is greater than or equal to k / 2, and condition X2 is: the number of correction calibration positions that overlap with region β2 is equal to 1. When any full-angle calibration region exists within the area where the calibration position is located, the calibration position is recorded as a full-angle calibration position; when any invalid calibration region exists within the area where the calibration position is located, and no full-angle calibration region exists, the calibration position is recorded as a redundant calibration position. For any twin analysis angle of the roll sample length LF t : LF from the perspective of twin analysis t Of all the corresponding correction calibration positions, only those correction calibration positions that were not recorded as full-angle calibration positions and those that were not recorded as redundant calibration positions are retained; Obtain the full-angle calibration position and redundant calibration position corresponding to the length of all roll material samples, and update the correction calibration position of all twin analysis angles based on the full-angle calibration position and redundant calibration position.

[0013] Furthermore, when the roll-to-roll laser cutting equipment is running, after performing offset correction, based on the correction parameters and the corresponding correction calibration position of the roll material, the corrected calibration control of the roll material includes: When the roll-to-roll laser cutting equipment is running, the roll being cut in the equipment is recorded as the real-time control roll; the length of the real-time control roll is recorded as the calibration roll length; and the roll sample length with the smallest difference from the calibration roll length among all roll sample lengths is recorded as the reference sample length. When the correction control module in the roll-to-roll laser cutting equipment performs real-time control of the roll material for offset correction, the angle between the longitudinal side of the roll material and the direction of movement of the conveyor belt during correction is recorded as the real-time correction angle based on the correction parameters.

[0014] Furthermore, when the roll-to-roll laser cutting equipment is running, after performing offset correction, the calibration control of the roll material after correction, based on the correction parameters and the corresponding correction calibration position of the roll material, also includes: The twin analysis angle with the smallest difference from the real-time correction angle among all twin analysis angles of the reference sample length is recorded as the reference sample angle. In real-time control of the roll material, mark the full-angle calibration position corresponding to the reference sample length and all correction calibration positions corresponding to the reference sample angle of the reference sample length; When performing calibration control on the real-time control roll, the whole machine motion controller corrects the laser cutting path and roll feeding speed at each position based on the positional relationship between the roll and the conveyor belt at all marked positions and the preset correction angle corresponding to the marked positions.

[0015] The beneficial effects of this invention are as follows: First, this application uses digital twins to construct a digital twin model corresponding to the roll-to-roll laser cutting equipment, and uses the alignment record analysis method to obtain the roll material correction calibration parameters based on the digital twin model; then, it analyzes all the roll material correction calibration parameters, and obtains the correction calibration positions corresponding to roll materials of different lengths and the preset correction angles for each correction calibration position based on the analysis results. The advantage of this is that by using the digital twin model to obtain the roll material correction calibration parameters, it is possible to analyze all roll materials of different lengths that can be cut in the roll-to-roll laser cutting equipment, and obtain the positions of local overcorrection and undercorrection defects caused by tension disorder after offset correction. By obtaining the correction calibration positions and the preset correction angles of the correction calibration positions, it is possible to integrate and calibrate the positions in roll materials of different lengths that need to be locally corrected after offset correction, and to correct the laser cutting path and roll material feeding speed at each position by using the preset correction angle, thereby avoiding the problem of poor consistency of the cutting position of the whole roll product and low yield after cutting due to the use of repeated global mechanical correction or uniform global compensation parameters. This application also obtains the full-angle calibration position and redundant calibration position corresponding to all calibration positions for rolls of different lengths based on the preset correction angles of all calibration positions. The correction calibration position is then updated based on the full-angle calibration position and redundant calibration position. Finally, when the roll-to-roll laser cutting equipment is running, after offset correction is performed, the corrected calibration control is performed on the roll based on the correction parameters and the correction calibration position corresponding to the roll. The advantage of this is that by obtaining the full-angle calibration position and updating the correction calibration position, the position for local correction after offset correction can be further optimized, thereby improving the efficiency of correcting and calibrating the roll after correction. Attached Figure Description

[0016] Figure 1 This is a flowchart illustrating the steps of the method of the present invention; Figure 2 This is a flowchart illustrating the process of obtaining the correction calibration position and the preset correction angle according to the present invention. Figure 3 This is a flowchart illustrating the acquisition of the full-angle calibration position and redundant calibration position according to the present invention. Figure 4 This is a schematic diagram of the electronic device of the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1, please refer to Figure 1 As shown, this application provides a method for alignment and calibration control of roll-to-roll laser cutting equipment, including the following steps: Step S1: Construct a digital twin model of the roll-to-roll laser cutting equipment using digital twins, and obtain the roll material correction calibration parameters based on the alignment record analysis method using the digital twin model; Step S1 includes: Step 101, based on the size data of all components in the roll-to-roll laser cutting equipment, construct a model of the roll-to-roll laser cutting equipment using digital twins, and integrate a motion control mapping module and a roll material dynamics simulation module into the model. The obtained model is denoted as the cutting twin model, wherein the size data includes length data, width data and height data. In the specific implementation process, the purpose of integrating the motion control mapping module and the roll material dynamics simulation module into the model is to ensure that the cutting twin model can accurately simulate the entire process of the roll-to-roll laser cutting equipment performing laser cutting on the roll material. In the specific implementation, the digital twin model can be integrated according to the existing motion control module and the roll material dynamics simulation related modules, thereby improving the accuracy of subsequent laser cutting simulation. Step 102: Based on the historical cutting records of the roll-to-roll laser cutting equipment, obtain the length of all rolls placed in the roll-to-roll laser cutting equipment, and record all lengths as the roll sample length.

[0019] Step S1 further includes: Step 103, for any roll sample length, based on the record of the roll cutting the roll with a length equal to the roll sample length by the roll-to-roll laser cutting device, obtain the maximum offset angle of the roll when the roll is corrected in the record, and record it as the maximum reference angle of the roll sample length, wherein the maximum offset angle is the maximum angle formed by the longitudinal side of the roll and the movement direction of the conveyor belt. In the data analysis of this embodiment, for example, in the process of analyzing copper foil rolls, a roll sample with a length of 100m is obtained, and by acquiring the cutting record of the 100m copper foil roll by the roll-to-roll laser cutting device, the maximum offset angle of the copper foil roll when it is corrected is found to be 5°. Then, 5° can be recorded as the maximum reference angle of 100m. Step 104: Obtain the maximum reference angle for the length of all roll samples.

[0020] Step 105, the alignment record analysis method includes: Step 1051, for any roll sample length: uniformly obtain k values ​​in the interval (0, C], and record them as twin analysis angles LF1 to LF1 respectively. k Where C is the maximum reference angle of the roll sample length; In the data analysis of this embodiment, the value of k can be set according to the value of the maximum reference angle. If the value of the maximum reference angle is large, the value of k can be increased to perform more thorough analysis. If the value of the maximum reference angle is small, the value of k can be decreased to avoid excessive redundant analysis. For example, in the data analysis of this embodiment, the maximum reference angle corresponding to 100m of copper foil roll is 5°, so the value of k can be 5, and 5 values ​​are evenly selected in [0, 5] as twin analysis angles. Step 1052: Perform k laser cutting simulations sequentially for all twin analysis angles, and obtain all correction calibration parameters corresponding to each twin analysis angle after the k laser cutting simulations; record the correction calibration parameters of all twin analysis angles as the roll material correction calibration parameters of the roll material sample length.

[0021] Step S106, laser cutting simulation includes: Step S1061, for any twin analysis angle LF t In the twin model of cutting, a roll of material with a length equal to that of the sample is simulated for cutting. During the cutting process, the longitudinal side of the roll is tilted until the angle between the longitudinal side of the roll and the direction of movement of the conveyor belt is the twin analysis angle LF. t , where t is a positive integer less than or equal to k and greater than or equal to 1; Step S1062, when the angle between the longitudinal side of the roll material and the direction of movement of the conveyor belt is the twin analysis angle LF t At that time, the web material is controlled by the correction control module equipped in the cutting twin model.

[0022] The laser cutting simulation also includes: step S1063, when the correction control ends, the positional relationship between the roll and the conveyor belt is obtained, and the area where the longitudinal side of the roll is not parallel to the direction of movement of the conveyor belt is recorded as the correction area. In the data analysis of this embodiment, for example, when analyzing data of a 100m copper foil roll, the twin analysis angle is 5°, and at the end of the laser cutting simulation correction control, the obtained correction area is located at 34m, 49m, 67m and 83m from the beginning to the end of the roll; in addition, the offset angles of the roll at 34m, 49m, 67m and 83m are 1°, 1°, 0.5° and 1.3° respectively. Step S1064: Obtain the position of each correction area in the roll material and record it as the correction position; record the maximum angle formed by the longitudinal side of the roll material in the correction area and the movement direction of the conveyor belt as the offset angle. Step S1065: Record all correction positions and the corresponding offset angles for each correction position as twin analysis angles LF. t Corrected calibration parameters.

[0023] Step S2: Analyze all roll material correction calibration parameters, and based on the analysis results, obtain the correction calibration positions corresponding to roll materials of different lengths and the preset correction angle for each correction calibration position; Based on the preset correction angles of all correction calibration positions corresponding to rolls of different lengths, the full-angle calibration positions and redundant calibration positions corresponding to rolls of different lengths are obtained respectively, and the correction calibration positions are updated based on the full-angle calibration positions and redundant calibration positions. Step S2 includes: Step S201, for any twin analysis angle LF of any roll sample length. t After marking k laser cutting simulations in a roll α of length equal to the sample length, the twin analysis angle LF is determined. t All corresponding correction and adjustment positions; For step S202, please refer to... Figure 2 As shown, for any correction position A in the roll material α, when the correction position A does not coincide with any other correction position, the correction position A is recorded as the correction calibration position, and the offset angle of the correction calibration position is recorded as the preset correction angle. Step S203: When the correction position A coincides with any correction position B, the area where the correction position A and the correction position B coincide is recorded as the correction calibration position, and the average value of the offset angle of the correction position A and the offset angle of the correction position B is recorded as the preset correction angle of the correction calibration position. In the data analysis of this embodiment, for example, in the analysis of a copper foil roll with a sample length of 100m, for a twin analysis angle of 5°, the two correction positions obtained are 34m and 34.5m from the beginning to the end of the roll, and the corresponding offset angles are 1° and 1.2°, respectively. In addition, the area [34m, 34.5m] from the beginning to the end of the roll is the area where the two correction positions overlap. Therefore, the position of the area [34m, 34.5m] can be recorded as the correction calibration position, and the preset correction angle of the correction calibration position can be calculated to be 1.1°. Step S204: Obtain the correction calibration positions corresponding to all twin analysis angles of the roll material sample length and the preset correction angle for each correction calibration position.

[0024] Step S2 also includes: Step S205, for any roll sample length: mark the correction calibration positions corresponding to all twin analysis angles of the roll sample length in the roll α with a length equal to the roll sample length; Step S206: When any region β1 in the roll material α satisfies condition X1, region β1 is recorded as the full-angle calibration region; when any region β2 in the roll material α satisfies condition X2, region β2 is recorded as the invalid calibration region. Condition X1 is: the number of correction calibration positions that overlap with region β1 is greater than or equal to k / 2, and condition X2 is: the number of correction calibration positions that overlap with region β2 is equal to 1. Step S207: When there is any full-angle calibration area in the area where the correction calibration position is located, the correction calibration position is recorded as a full-angle calibration position; when there is any invalid calibration area in the area where the correction calibration position is located, and there is no full-angle calibration area, the correction calibration position is recorded as a redundant calibration position. In the specific implementation process, by obtaining the full-angle calibration position and the redundant calibration position, it is possible to calibrate the correction calibration position that exists in most twin analysis angles, as well as the correction calibration position corresponding to only a single twin analysis angle, thereby obtaining the positions that need to be marked and the positions that can be ignored, thus improving the efficiency of correcting and calibrating the roll material after correction. Step S208, for any twin analysis angle LF of the roll sample length t : LF from the perspective of twin analysis t Of all the corresponding correction calibration positions, only those correction calibration positions that were not recorded as full-angle calibration positions and those that were not recorded as redundant calibration positions are retained; Step S209: Obtain the full-angle calibration position and redundant calibration position corresponding to the length of all roll material samples, and update the correction calibration position of all twin analysis angles based on the full-angle calibration position and redundant calibration position.

[0025] Step S3: When the roll-to-roll laser cutting equipment is running, after performing offset correction, the corrected calibration control is performed on the roll material based on the correction parameters and the correction calibration position corresponding to the roll material. The correction parameters are the parameters corresponding to the operation performed by the equipment during offset correction. Step S3 includes: Step S301, when the roll-to-roll laser cutting equipment is running, the roll material being cut in the equipment is recorded as the real-time control roll material; the length of the real-time control roll material is recorded as the calibration roll material length; and the roll material sample length with the smallest difference from the calibration roll material length among all roll material sample lengths is recorded as the reference sample length. Step S302: After the real-time control roll material is offset and corrected by the correction control module in the roll-to-roll laser cutting equipment, the angle between the longitudinal side of the roll material and the movement direction of the conveyor belt during correction is recorded as the real-time correction angle based on the correction parameters.

[0026] Step S3 also includes: Step S303, which records the twin analysis angle with the smallest difference from the real-time correction angle among all twin analysis angles of the reference sample length as the reference sample angle. In the data analysis of this embodiment, for example, during the operation of a roll-to-roll laser cutting machine, the real-time control roll being cut is a copper foil roll, and the calibration roll length is 100m. Through the above analysis, it can be seen that 100m can be recorded as the reference sample length. In addition, after offset correction, the real-time correction angle obtained is 4.9°. Through the above analysis and data calculation, it is found that 5° is the twin analysis angle with the smallest difference from 4.9° among all twin analysis angles of 100m. Therefore, 5° can be used as the reference sample angle for analysis. Step S304: In the real-time controlled roll material, mark the full-angle calibration position corresponding to the reference sample length and all correction calibration positions corresponding to the reference sample angle of the reference sample length. Step S305: When performing calibration control on the real-time control roll, the whole machine motion controller corrects the laser cutting path and roll feeding speed at each position based on the positional relationship between the roll and the conveyor belt at all marked positions and the preset correction angle corresponding to the marked positions. In the data analysis of this embodiment, for example, through the above analysis, a full-angle calibration position is obtained as the area [34m, 34.5m] located from beginning to end of the roll material. Then, when performing calibration control on the real-time controlled roll material, the whole machine motion controller can be controlled to correct the laser cutting path and roll material feeding speed at [34m, 34.5m] according to the positional relationship between the roll material at [34m, 34.5m] and the conveyor belt, as well as the preset correction angle of 1.1° corresponding to [34m, 34.5m].

[0027] Example 2, please refer to Figure 4 As shown, Figure 4The example illustrates the structure of an electronic device, which may include a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus. The memory stores computer-readable instructions, which the processor can call. When the computer-readable instructions are executed by the processor, the steps in the roll-to-roll laser cutting equipment alignment calibration control method are performed to achieve the following functions: First, a digital twin model corresponding to the roll-to-roll laser cutting equipment is constructed using digital twins, and the roll material correction calibration parameters are obtained based on the alignment record analysis method using the digital twin model; then, all roll material correction calibration parameters are analyzed, and the correction calibration positions corresponding to roll materials of different lengths and the preset correction angles for each correction calibration position are obtained based on the analysis results; then, based on the preset correction angles of all correction calibration positions corresponding to roll materials of different lengths, the full-angle calibration positions and redundant calibration positions corresponding to roll materials of different lengths are obtained respectively, and the correction calibration positions are updated based on the full-angle calibration positions and redundant calibration positions; finally, when the roll-to-roll laser cutting equipment is running, after performing offset correction, the corrected calibration control is performed on the roll material based on the correction parameters and the correction calibration positions corresponding to the roll material.

[0028] Furthermore, when the logical instructions in the aforementioned memory can be implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0029] Example 3: This application also provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the roll-to-roll laser cutting equipment alignment calibration control method provided by the above methods. The method includes: firstly, using digital twins to construct a digital twin model corresponding to the roll-to-roll laser cutting equipment, and using the alignment record analysis method to obtain the roll material correction calibration parameters based on the digital twin model; then, analyzing all roll material correction calibration parameters, and obtaining the correction calibration positions corresponding to roll materials of different lengths and the preset correction angle of each correction calibration position based on the analysis results; then, based on the preset correction angles of all correction calibration positions corresponding to roll materials of different lengths, obtaining the full-angle calibration positions and redundant calibration positions corresponding to roll materials of different lengths respectively, and updating the correction calibration positions based on the full-angle calibration positions and redundant calibration positions; finally, when the roll-to-roll laser cutting equipment is running, after performing offset correction, performing the corrected calibration control on the roll material based on the correction parameters and the correction calibration positions corresponding to the roll material.

[0030] Example 4: This application also provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it performs the steps of the above-described roll-to-roll laser cutting equipment alignment calibration control method to achieve the following functions: First, a digital twin model corresponding to the roll-to-roll laser cutting equipment is constructed using digital twins, and the roll material correction calibration parameters are obtained based on the alignment record analysis method using the digital twin model; then, all roll material correction calibration parameters are analyzed, and the correction calibration positions corresponding to roll materials of different lengths and the preset correction angles of each correction calibration position are obtained based on the analysis results; then, based on the preset correction angles of all correction calibration positions corresponding to roll materials of different lengths, the full-angle calibration positions and redundant calibration positions corresponding to roll materials of different lengths are obtained respectively, and the correction calibration positions are updated based on the full-angle calibration positions and redundant calibration positions; finally, when the roll-to-roll laser cutting equipment is running, after performing offset correction, the corrected calibration control is performed on the roll material based on the correction parameters and the correction calibration positions corresponding to the roll material.

[0031] Based on the above description of the embodiments, the embodiments of the present invention can be provided as methods, systems, or computer program products. Based on this understanding, the above technical solutions, in essence or in terms of their contribution to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or certain parts of the embodiments.

[0032] In the embodiments provided in this application, it should be understood that the disclosed system or method can be implemented in other ways. The embodiments described above are merely illustrative. For example, the division of modules or units is only a logical functional division, and there may be other division methods in actual implementation. Furthermore, multiple modules or units may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the coupling or direct coupling or communication connection shown or discussed may be through some communication interfaces. The indirect coupling or communication connection between systems, modules, and units may be electrical, mechanical, or other forms.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for alignment and calibration control of roll-to-roll laser cutting equipment, characterized in that, Includes the following steps: A digital twin model of the roll-to-roll laser cutting equipment is constructed using digital twins, and the alignment record analysis method is used to obtain the roll material correction and calibration parameters based on the digital twin model. All roll material correction calibration parameters are analyzed, and based on the analysis results, the correction calibration positions corresponding to roll materials of different lengths and the preset correction angles for each correction calibration position are obtained. Based on the preset correction angles of all correction calibration positions corresponding to rolls of different lengths, the full-angle calibration positions and redundant calibration positions corresponding to rolls of different lengths are obtained respectively, and the correction calibration positions are updated based on the full-angle calibration positions and redundant calibration positions. When the roll-to-roll laser cutting equipment is running, after performing offset correction, the equipment performs corrected calibration control on the roll material based on the correction parameters and the corresponding correction calibration position of the roll material. The correction parameters are the parameters corresponding to the operation performed by the equipment during offset correction.

2. The alignment and calibration control method for roll-to-roll laser cutting equipment according to claim 1, characterized in that, The digital twin model of the roll-to-roll laser cutting equipment constructed using digital twins includes: Based on the dimensional data of all components in the roll-to-roll laser cutting equipment, a model of the roll-to-roll laser cutting equipment is constructed using digital twins. A motion control mapping module and a roll material dynamics simulation module are integrated into the model. The resulting model is denoted as the cutting twin model. The dimensional data includes length data, width data, and height data. Based on the historical cutting records of the roll-to-roll laser cutting equipment, the lengths of all rolls placed in the roll-to-roll laser cutting equipment are obtained, and all lengths are recorded as the roll sample lengths.

3. The alignment and calibration control method for roll-to-roll laser cutting equipment according to claim 2, characterized in that, Based on the digital twin model, the alignment record analysis method is used to obtain the roll material correction and calibration parameters, including: For any roll sample length, based on the record of the roll cutting the roll with a length equal to the roll sample length by the roll-to-roll laser cutting equipment, the maximum offset angle of the roll when the roll is corrected in the record is obtained and recorded as the maximum reference angle of the roll sample length. The maximum offset angle is the maximum angle formed by the longitudinal side of the roll and the movement direction of the conveyor belt. Obtain the maximum reference angle for all roll sample lengths.

4. The alignment and calibration control method for roll-to-roll laser cutting equipment according to claim 3, characterized in that, Positional record analysis methods include: For any roll sample length: k values ​​are uniformly obtained in the interval (0, C], and denoted as twin analysis angles LF1 to LF2 respectively. k Where C is the maximum reference angle of the roll sample length; Perform k laser cutting simulations sequentially for all twin analysis angles, and obtain all correction calibration parameters corresponding to each twin analysis angle after the k laser cutting simulations; record the correction calibration parameters of all twin analysis angles as the roll material correction calibration parameters of the roll material sample length.

5. The alignment and calibration control method for roll-to-roll laser cutting equipment according to claim 4, characterized in that, Laser cutting simulation includes: For any twin analysis perspective LF t In the twin model of cutting, a roll of material with a length equal to that of the sample is simulated for cutting. During the cutting process, the longitudinal side of the roll is tilted until the angle between the longitudinal side of the roll and the direction of movement of the conveyor belt is the twin analysis angle LF. t , where t is a positive integer less than or equal to k and greater than or equal to 1; When the angle between the longitudinal side of the roll material and the direction of movement of the conveyor belt is the twin analysis angle LF t At that time, the web material is controlled by the correction control module equipped in the cutting twin model.

6. The alignment and calibration control method for roll-to-roll laser cutting equipment according to claim 5, characterized in that, Laser cutting simulation also includes: When the correction control ends, the positional relationship between the roll and the conveyor belt is obtained, and the area where the longitudinal side of the roll is not parallel to the direction of movement of the conveyor belt is recorded as the correction area. The position of each correction zone in the roll material is obtained and recorded as the correction position; the maximum angle formed by the longitudinal side of the roll material in the correction zone and the direction of movement of the conveyor belt is recorded as the offset angle. All correction positions and the corresponding offset angles for each correction position are denoted as the twin analysis angle LF. t Corrected calibration parameters.

7. The alignment and calibration control method for roll-to-roll laser cutting equipment according to claim 6, characterized in that, All roll material correction calibration parameters were analyzed, and based on the analysis results, the correction calibration positions corresponding to roll materials of different lengths and the preset correction angles for each correction calibration position were obtained, including: For any twin analysis angle of any roll sample length, LF t After marking k laser cutting simulations in a roll α of length equal to the sample length, the twin analysis angle LF is determined. t All corresponding correction and adjustment positions; For any correction position A in the roll material α, when the correction position A does not coincide with any other correction position, the correction position A is recorded as the correction calibration position, and the offset angle of the correction calibration position is recorded as the preset correction angle. When the correction position A coincides with any correction position B, the area where the correction position A and the correction position B coincide is recorded as the correction calibration position, and the average of the offset angle of the correction position A and the offset angle of the correction position B is recorded as the preset correction angle of the correction calibration position. Obtain the correction calibration positions corresponding to all twin analysis angles of the roll sample length, as well as the preset correction angle for each correction calibration position.

8. The alignment and calibration control method for roll-to-roll laser cutting equipment according to claim 7, characterized in that, The analysis of all roll material correction calibration parameters, based on the analysis results, yields the correction calibration positions corresponding to roll materials of different lengths, as well as the preset correction angles for each correction calibration position. This also includes: For any roll sample length: mark the correction calibration positions corresponding to all twin analysis angles of the roll sample length in roll α with a length equal to the roll sample length; When any region β1 in the roll material α satisfies condition X1, region β1 is recorded as the full-angle calibration region; when any region β2 in the roll material α satisfies condition X2, region β2 is recorded as the invalid calibration region. Condition X1 is: the number of correction calibration positions that overlap with region β1 is greater than or equal to k / 2, and condition X2 is: the number of correction calibration positions that overlap with region β2 is equal to 1. When any full-angle calibration region exists within the area where the calibration position is located, the calibration position is recorded as a full-angle calibration position; when any invalid calibration region exists within the area where the calibration position is located, and no full-angle calibration region exists, the calibration position is recorded as a redundant calibration position. For any twin analysis angle of the roll sample length LF t : LF from the perspective of twin analysis t Of all the corresponding correction calibration positions, only those correction calibration positions that were not recorded as full-angle calibration positions and those that were not recorded as redundant calibration positions are retained; Obtain the full-angle calibration position and redundant calibration position corresponding to the length of all roll material samples, and update the correction calibration position of all twin analysis angles based on the full-angle calibration position and redundant calibration position.

9. The alignment and calibration control method for roll-to-roll laser cutting equipment according to claim 8, characterized in that, When the roll-to-roll laser cutting equipment is running, after offset correction, the calibration control of the roll material is performed based on the correction parameters and the corresponding correction calibration position of the roll material, including: When the roll-to-roll laser cutting equipment is running, the roll being cut in the equipment is recorded as the real-time control roll; the length of the real-time control roll is recorded as the calibration roll length; and the roll sample length with the smallest difference from the calibration roll length among all roll sample lengths is recorded as the reference sample length. When the correction control module in the roll-to-roll laser cutting equipment performs real-time control of the roll material for offset correction, the angle between the longitudinal side of the roll material and the direction of movement of the conveyor belt during correction is recorded as the real-time correction angle based on the correction parameters.

10. The alignment and calibration control method for roll-to-roll laser cutting equipment according to claim 9, characterized in that, When the roll-to-roll laser cutting equipment is running, after performing offset correction, the calibration control of the roll material after correction, based on the correction parameters and the corresponding correction calibration position of the roll material, also includes: The twin analysis angle with the smallest difference from the real-time correction angle among all twin analysis angles of the reference sample length is recorded as the reference sample angle. In real-time control of the roll material, mark the full-angle calibration position corresponding to the reference sample length and all correction calibration positions corresponding to the reference sample angle of the reference sample length; When performing calibration control on the real-time control roll, the whole machine motion controller corrects the laser cutting path and roll feeding speed at each position based on the positional relationship between the roll and the conveyor belt at all marked positions and the preset correction angle corresponding to the marked positions.

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