Online full inspection method and system for rewinding quality of polymer materials before heat treatment

Abstract

The present invention discloses an online full inspection method and system for the rewinding quality of polymer materials before heat treatment. The method comprises: determining the gap type of the polymer material coil, and determining the theoretical outer diameter parameter of the polymer material rewinding according to the gap type; obtaining the instantaneous outer diameter parameter of the polymer material rewinding and the gap parameter between key local layers by CCD technology; comparing the consistency of the gap parameter between key local layers with the set parameter, and at the same time comparing the consistency of the theoretical outer diameter parameter with the instantaneous outer diameter parameter; determining the inspection quality of the polymer material rewinding according to the comparison result, and determining the qualification of the polymer material rewinding according to the inspection quality. Non-contact real-time monitoring can be achieved without touching the material, and the inspection reliability is greatly improved, thereby avoiding the risk of subsequent product quality. The product qualification rate will be improved to a certain extent, and the inspection efficiency is greatly improved, and the personnel cost is reduced from random inspection by a dedicated person to full inspection by an unmanned person.

Description

Technical Field

[0001] The present invention relates to the technical field of heat treatment of polymer material coils, and in particular to an online full inspection method and system for rewinding quality of polymer materials before heat treatment. Background Art

[0002] Currently, the primary raw material for artificial graphite thermally conductive film is PI, and the main manufacturing process involves PI slitting, PI rewinding, carbonization, graphitization, and calendering. The most critical processes are carbonization and graphitization. Carbonization and graphitization are heat treatment processes, accompanied by significant colloid release and certain shrinkage and expansion. Their quality is not only dependent on the heat treatment process parameters but also on the gap between each layer of the coil. Different materials have different gap requirements. Improper gap management directly leads to scrapping of subsequent products. The gap between each layer of the coil is achieved during the PI rewinding process. Currently, there is no effective inspection method for this process, and inspection is performed manually using a ruler. Because PI is a flexible material, the monitoring process requires touch and is prone to deformation. This leads to significant fluctuations in inspection reliability and low inspection efficiency. This results in significant fluctuations in product quality, reducing monitoring efficiency, success rate, and stability. Summary of the Invention

[0003] In response to the problems shown above, the present invention provides an online full inspection method and system for the rewinding quality of polymer materials before heat treatment to solve the problems mentioned in the background technology of manual measurement and inspection with a ruler, the monitoring process requires touching and is easy to deform, the inspection reliability fluctuates greatly, and the inspection efficiency is low, the product quality fluctuates greatly, and the monitoring efficiency, success rate and stability are reduced.

[0004] An online full inspection method for rewinding quality of polymer materials before heat treatment, comprising the following steps:

[0005] Determine the gap type of the polymer material coil and determine the theoretical outer diameter parameters of the polymer material rewinding according to the gap type;

[0006] The instantaneous outer diameter parameters of the polymer material rewinding and the gap parameters between key local layers are obtained through CCD technology;

[0007] Compare the consistency of the gap parameters between key local layers with the set parameters, and compare the consistency of the theoretical outer diameter parameters with the instantaneous outer diameter parameters;

[0008] The inspection quality of the polymer material rewinding is determined based on the comparison results, and the eligibility of the polymer material rewinding is determined based on the inspection quality.

[0009] Preferably, the determining of the gap type of the polymer material coil and determining the theoretical outer diameter parameter of the polymer material rewinding according to the gap type includes:

[0010] Detecting the number of gaps in the polymer material coil and determining the gap type of the polymer material coil according to the number of gaps, wherein the gap type includes: single gap and step gap;

[0011] Determining detection parameters for the polymer material coil according to the gap type, and obtaining instantaneous meters or stage meters of the polymer material coil and instantaneous gap setting parameters or stage gap setting parameters according to the detection parameters;

[0012] Calculating theoretical outer diameter parameters of the polymer material rewinding according to the instantaneous number of meters or stage number of meters of the polymer material coil and the instantaneous gap setting parameters or stage gap setting parameters;

[0013] The theoretical outer diameter calculation formula for a single gap is:

[0014]

[0015] Wherein, R1 represents the theoretical outer diameter under a single gap type, r represents the initial radius of the polymer material rewinding, l represents the instantaneous number of meters, s represents the PI thickness of the polymer material coil, and m represents the initial gap setting parameter under a single gap type;

[0016] The theoretical outer diameter calculation formula for the stage gap is:

[0017]

[0018] Where R2 represents the theoretical outer diameter under the stage gap type, N represents the number of gap distribution stages, i represents the i-th stage, l i Expressed as the number of stages in meters for the i-th stage.

[0019] Preferably, the method of obtaining the instantaneous outer diameter parameter of the rewound polymer material and the gap parameter between key local layers by CCD technology includes:

[0020] The multi-angle position image information of the polymer material coil is collected by CCD technology, and the edge detection and morphological processing of the multi-angle position image information are performed to obtain a three-dimensional image of the polymer material coil;

[0021] The instantaneous outer diameter parameters of the polymer material rewind are detected based on the 3D image and the three-party detection tool. The 3D image is divided into different areas by a pre-set threshold and the pixel values in each area are classified;

[0022] Determine the pixel density difference of each area based on the classification results, and define the area with the most concentrated pixel density difference as the key local area;

[0023] The three-party detection tool is used to measure the gap between layers in key local areas, and the gap parameters between layers are determined based on the measurement results.

[0024] Preferably, the comparison of the consistency of the gap parameters between key local layers and the set parameters, and the comparison of the consistency of the theoretical outer diameter parameters and the instantaneous outer diameter parameters, includes:

[0025] Obtaining the preparation process parameters of the artificial graphite thermal conductive film, and determining the calibration gap parameters of the rewinding of the polymer material before heat treatment based on the preparation process parameters;

[0026] Compare the gap parameters between key local layers with the calibrated gap parameters to determine data consistency;

[0027] Obtain the outer diameter values of the theoretical outer diameter parameter and the instantaneous outer diameter parameter respectively, and compare the outer diameter data to determine the numerical consistency.

[0028] Preferably, determining the inspection quality of the polymer material rewinding according to the comparison result, and determining the eligibility of the polymer material rewinding according to the inspection quality, includes:

[0029] Determine the gap data deviation and outer diameter data deviation of the polymer material rewinding based on the comparison results, and determine the specification deviation and process deviation based on the gap data deviation and outer diameter data deviation;

[0030] Determine the inspection quality of polymer material rewinding based on specification deviation and process deviation, and determine the abnormal factors of functional mechanism based on the inspection quality;

[0031] Determine the eligibility of polymer material rewinding based on the abnormal factors of functional mechanism, and determine the feedback mechanism based on the eligibility;

[0032] Select the appropriate processing method based on the feedback mechanism, and issue an alarm or stop work based on the processing method.

[0033] An online full inspection system for the rewinding quality of polymer materials before heat treatment, the system comprising:

[0034] The first determination module is used to determine the gap type of the polymer material coil and determine the theoretical outer diameter parameter of the polymer material rewinding according to the gap type;

[0035] An acquisition module is used to obtain the instantaneous outer diameter parameters of the polymer material rewinding and the gap parameters between key local layers through CCD technology;

[0036] Comparison module, used to compare the consistency of gap parameters between key local layers with set parameters, and to compare the consistency of theoretical outer diameter parameters with instantaneous outer diameter parameters;

[0037] The second determination module is used to determine the inspection quality of the polymer material rewinding according to the comparison result, and determine the eligibility of the polymer material rewinding according to the inspection quality.

[0038] Preferably, the first determining module includes:

[0039] A first determination submodule is configured to detect the number of gaps in the polymer material coil and determine the gap type of the polymer material coil according to the number of gaps, wherein the gap types include single gap and step gap;

[0040] A first acquisition submodule is configured to determine detection parameters for the polymer material coil according to the gap type, and to acquire instantaneous meters or stage meters of the polymer material coil and instantaneous gap setting parameters or stage gap setting parameters according to the detection parameters;

[0041] A calculation submodule, for calculating theoretical outer diameter parameters of the polymer material rewind according to the instantaneous number of meters or the stage number of meters of the polymer material coil and the instantaneous gap setting parameters or the stage gap setting parameters;

[0042] The theoretical outer diameter calculation formula for a single gap is:

[0043]

[0044] Wherein, R1 represents the theoretical outer diameter under a single gap type, r represents the initial radius of the polymer material rewinding, l represents the instantaneous number of meters, s represents the PI thickness of the polymer material coil, and m represents the initial gap setting parameter under a single gap type;

[0045] The theoretical outer diameter calculation formula for the stage gap is:

[0046]

[0047] Where R2 represents the theoretical outer diameter under the stage gap type, N represents the number of gap distribution stages, i represents the i-th stage, l i Expressed as the number of stages in meters for the i-th stage.

[0048] Preferably, the acquisition module includes:

[0049] The image acquisition and processing submodule is used to acquire multi-angle position image information of the polymer material coil through CCD technology, and perform edge detection and morphological processing on the multi-angle position image information to obtain a three-dimensional image of the polymer material coil;

[0050] The division and classification module is used to detect the instantaneous outer diameter parameters of the polymer material rewind based on the three-dimensional image and the three-party detection tool, divide the three-dimensional image into different areas according to the pre-set threshold value and classify the pixel values in each area;

[0051] A submodule is defined to determine the pixel density difference of each region based on the classification results, and the region with the most concentrated pixel density difference is defined as the key local region;

[0052] The second determination submodule is used to measure the gap between layers in the key local area by using a three-party detection tool, and determine the gap parameters between layers according to the measurement results.

[0053] Preferably, the comparison module includes:

[0054] The third determination submodule is used to obtain the preparation process parameters of the artificial graphite thermal conductive film and determine the calibration gap parameters of the rewinding of the polymer material before heat treatment according to the preparation process parameters;

[0055] The first comparison submodule is used to compare the gap parameters between key local layers with the calibrated gap parameters to determine data consistency;

[0056] The second comparison submodule is used to obtain the outer diameter values of the theoretical outer diameter parameter and the instantaneous outer diameter parameter respectively, and compare the outer diameter data to determine the numerical consistency.

[0057] Preferably, the second determining module includes:

[0058] a fourth determination submodule, configured to determine a gap data deviation and an outer diameter data deviation of the polymer material rewinding according to the comparison result, and determine a specification deviation and a process deviation based on the gap data deviation and the outer diameter data deviation;

[0059] a fifth determination submodule, for determining the inspection quality of the polymer material rewinding according to the specification deviation and the process deviation, and determining the functional mechanism abnormality factor according to the inspection quality;

[0060] a sixth determination submodule, for determining the eligibility of the polymer material rewinding according to the functional mechanism abnormality factor, and determining a feedback mechanism based on the eligibility;

[0061] The selection submodule is used to select an appropriate processing method according to the feedback mechanism, and to issue an alarm or stop the work according to the processing method.

[0062] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0063] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0065] Figure 1 This is a workflow diagram of an online full inspection method for the rewinding quality of a polymer material before heat treatment provided by the present invention;

[0066] Figure 2 Another workflow diagram of the on-line full inspection method for the rewinding quality of polymer materials before heat treatment provided by the present invention;

[0067] Figure 3 This is a schematic structural diagram of an online full inspection system for the rewinding quality of polymer materials before heat treatment provided by the present invention;

[0068] Figure 4 This is a structural schematic diagram of an acquisition module in an online full inspection system for the rewinding quality of polymer materials before heat treatment provided by the present invention. DETAILED DESCRIPTION

[0069] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0070] At present, the main raw material used for artificial graphite thermal conductive film is PI, and the main preparation process is; PI slitting, PI rewinding, carbonization, graphitization, and calendering. Among them, the most critical processes are carbonization and graphitization. Carbonization and graphitization are heat treatment processes, accompanied by large colloid release and certain shrinkage and expansion. In addition to being related to the heat treatment process parameters, their quality is also strongly related to the gap between each layer of the coil. Different materials have different gap requirements. Improper gap handling directly leads to the scrapping of subsequent process products. The gap between each layer of the coil is achieved by the PI rewinding process. At present, there is no effective inspection method for this process, and it is inspected by manual measurement with a ruler. Because PI is a flexible material, the monitoring process requires touch and is easy to deform. The inspection reliability fluctuates greatly, and the inspection efficiency is low. The product quality fluctuates greatly, which reduces the monitoring efficiency, success rate and stability. In order to solve the above problems, this embodiment discloses an online full inspection method for the rewinding quality of polymer materials before heat treatment.

[0071] An online full inspection method for the rewinding quality of polymer materials before heat treatment, such as Figure 1 As shown, the following steps are included:

[0072] Step S101, determining the gap type of the polymer material coil, and determining the theoretical outer diameter parameter of the polymer material rewinding according to the gap type;

[0073] Step S102: obtaining the instantaneous outer diameter parameters of the rewound polymer material and the gap parameters between key local layers by using CCD technology;

[0074] Step S103: comparing the consistency of the gap parameters between key local layers with the set parameters, and comparing the consistency of the theoretical outer diameter parameters with the instantaneous outer diameter parameters;

[0075] Step S104: determining the inspection quality of the polymer material rewinding according to the comparison result, and determining the eligibility of the polymer material rewinding according to the inspection quality.

[0076] The working principle of the above technical solution is: determine the gap type of the polymer material coil, and determine the theoretical outer diameter parameters of the polymer material rewinding according to the gap type; obtain the instantaneous outer diameter parameters of the polymer material rewinding and the gap parameters between key local layers through CCD technology; compare the consistency of the gap parameters between key local layers with the set parameters, and at the same time compare the consistency of the theoretical outer diameter parameters with the instantaneous outer diameter parameters; determine the inspection quality of the polymer material rewinding according to the comparison results, and determine the qualification of the polymer material rewinding according to the inspection quality.

[0077] The beneficial effects of the above technical solution are as follows: by determining the rewinding quality through data monitoring and comparison, non-contact real-time monitoring can be achieved without touching the material, which greatly improves the inspection reliability, avoids the subsequent product quality risks, and improves the product qualification rate to a certain extent. At the same time, the inspection efficiency is greatly improved, and the inspection is changed from random inspection by a dedicated person to full inspection by no one. The personnel cost is reduced. This solves the problem mentioned in the prior art of manual inspection with a ruler. Due to the flexible material of PI, the monitoring process requires touching and is easy to deform, the inspection reliability fluctuates greatly, and the inspection efficiency is low. The product quality fluctuates greatly, which reduces the monitoring efficiency, success rate and stability.

[0078] In one embodiment, determining the gap type of the polymer material coil and determining the theoretical outer diameter parameter of the polymer material rewinding according to the gap type includes:

[0079] Detecting the number of gaps in the polymer material coil and determining the gap type of the polymer material coil according to the number of gaps, wherein the gap type includes: single gap and step gap;

[0080] Determining detection parameters for the polymer material coil according to the gap type, and obtaining instantaneous meters or stage meters of the polymer material coil and instantaneous gap setting parameters or stage gap setting parameters according to the detection parameters;

[0081] Calculating theoretical outer diameter parameters of the polymer material rewinding according to the instantaneous number of meters or stage number of meters of the polymer material coil and the instantaneous gap setting parameters or stage gap setting parameters;

[0082] The theoretical outer diameter calculation formula for a single gap is:

[0083]

[0084] Wherein, R1 represents the theoretical outer diameter under a single gap type, r represents the initial radius of the polymer material rewinding, l represents the instantaneous number of meters, s represents the PI thickness of the polymer material coil, and m represents the initial gap setting parameter under a single gap type;

[0085] The theoretical outer diameter calculation formula for the stage gap is:

[0086]

[0087] Where R2 represents the theoretical outer diameter under the stage gap type, N represents the number of gap distribution stages, i represents the i-th stage, l i It is expressed as the number of stages in meters for the i-th stage.

[0088] The beneficial effects of the above technical solution are: by determining different outer diameter calculation methods according to the gap type, corresponding accurate reference data can be provided according to different gap specifications, thereby ensuring the accuracy and reliability of the reference sample, laying the foundation for subsequent data comparison, and improving practicality and stability.

[0089] In one embodiment, Figure 2 As shown, the instantaneous outer diameter parameters of the polymer material rewinding and the gap parameters between key local layers are obtained by CCD technology, including:

[0090] Step S201: collecting multi-angle position image information of the polymer material coil using CCD technology, performing edge detection and morphological processing on the multi-angle position image information to obtain a three-dimensional image of the polymer material coil;

[0091] Step S202: detecting the instantaneous outer diameter parameter of the polymer material rewind according to the three-dimensional image and the three-party detection tool, dividing the three-dimensional image into different areas according to a preset threshold value and classifying the pixel values in each area;

[0092] Step S203: Determine the pixel density difference of each area according to the classification result, and define the area with the most concentrated pixel density difference as the key local area;

[0093] Step S204: Measure the gap between layers in the key local area using a three-party detection tool, and determine the gap parameters between layers based on the measurement results.

[0094] The beneficial effects of the above technical solution are: by constructing a three-dimensional image of the polymer material coil, the structural information of the polymer material can be observed from multiple perspectives, and the gap and rewinding area can be quickly located to achieve precise parameter measurement, thereby ensuring data acquisition efficiency and accuracy. Furthermore, by locating the key area according to the pixel density difference, the layout structural characteristics of the polymer material can be accurately positioned, thereby improving positioning precision and accuracy.

[0095] In this embodiment, the pixel values in each region are classified, including:

[0096] Acquire the texture features of the coiled material according to the three-dimensional image, and determine the quality score according to the texture features of the coiled material based on a high-quality texture component dictionary;

[0097] The difficulty of locating the key local area is determined based on the quality score, the pixel fuzzy weight is determined based on the positioning difficulty, and a texture enhancement model based on weighted differential convolution and gradient change is constructed based on the pixel fuzzy weight;

[0098] The texture enhancement model is used to enhance the texture features of the coil, extract the enhanced texture features, and obtain the force and tactile data of the key local areas;

[0099] Encode the force tactile data to obtain force tactile features, and combine the force tactile features with texture features to obtain fusion features;

[0100] A mapping model between texture features and force-tactile features of a key local area is constructed based on the fusion features, and pixel change features of the key local area are determined based on the mapping model;

[0101] Determine the backbone network feature extraction capability requirements based on pixel change characteristics, and adjust the backbone network feature extraction parameters and spatial attention mechanism parameters based on the extraction capability requirements;

[0102] The pixel values in each region are classified through the adjusted backbone network.

[0103] The beneficial effects of the above technical solution are: by defining the pixel change characteristics of the key local area and then adjusting the feature extraction parameters of the backbone network to realize pixel value classification, accurate positioning and classification can be performed according to the fusion characteristics of the texture characteristics and tactile characteristics of the key local area, thereby improving the positioning and classification accuracy, laying the foundation for subsequent gap parameter measurement, and further improving practicality and reliability.

[0104] In one embodiment, the comparison of the consistency of the gap parameters between key local layers with the set parameters, and the comparison of the consistency of the theoretical outer diameter parameters with the instantaneous outer diameter parameters, includes:

[0105] Obtaining the preparation process parameters of the artificial graphite thermal conductive film, and determining the calibration gap parameters of the rewinding of the polymer material before heat treatment based on the preparation process parameters;

[0106] Compare the gap parameters between key local layers with the calibrated gap parameters to determine data consistency;

[0107] Obtain the outer diameter values of the theoretical outer diameter parameter and the instantaneous outer diameter parameter respectively, and compare the outer diameter data to determine the numerical consistency.

[0108] The beneficial effects of the above technical solution are: by performing item-by-item comparison, it can ensure the smooth progress of the comparison process and the consistency of the compared data, thereby improving work efficiency and stability.

[0109] In one embodiment, determining the inspection quality of the polymer material rewinding according to the comparison result, and determining the eligibility of the polymer material rewinding according to the inspection quality, includes:

[0110] Determine the gap data deviation and outer diameter data deviation of the polymer material rewinding based on the comparison results, and determine the specification deviation and process deviation based on the gap data deviation and outer diameter data deviation;

[0111] Determine the inspection quality of polymer material rewinding based on specification deviation and process deviation, and determine the abnormal factors of functional mechanism based on the inspection quality;

[0112] Determine the eligibility of polymer material rewinding based on the abnormal factors of functional mechanism, and determine the feedback mechanism based on the eligibility;

[0113] Select the appropriate processing method based on the feedback mechanism, and issue an alarm or stop work based on the processing method.

[0114] The beneficial effects of the above technical solution are: by determining the functional mechanism abnormality factor based on the detection quality, it is possible to intuitively judge whether the polymer material rewinding meets the qualitative functionality under the current quality, thereby improving the accuracy of the determination of the utilization rate. Furthermore, by performing alarms or shutdowns in different ways, the processing of low-quality polymer material rewinding can be stopped at the first time, which reduces costs to a certain extent and further improves practicality.

[0115] In one embodiment, this embodiment also discloses an online full inspection system for the rewinding quality of polymer materials before heat treatment, such as Figure 3 As shown, the system includes:

[0116] The first determining module 301 is used to determine the gap type of the polymer material coil and determine the theoretical outer diameter parameter of the polymer material rewinding according to the gap type;

[0117] An acquisition module 302 is used to acquire instantaneous outer diameter parameters of the polymer material rewind and key local layer-to-layer gap parameters using CCD technology;

[0118] Comparison module 303 is used to compare the consistency of gap parameters between key local layers with set parameters, and to compare the consistency of theoretical outer diameter parameters with instantaneous outer diameter parameters;

[0119] The second determining module 304 is configured to determine the inspection quality of the polymer material rewinding according to the comparison result, and determine the eligibility of the polymer material rewinding according to the inspection quality.

[0120] The working principle and beneficial effects of the above technical solution have been explained in the method embodiment and will not be repeated here.

[0121] In one embodiment, the first determining module includes:

[0122] A first determination submodule is configured to detect the number of gaps in the polymer material coil and determine the gap type of the polymer material coil according to the number of gaps, wherein the gap types include single gap and step gap;

[0123] A first acquisition submodule is configured to determine detection parameters for the polymer material coil according to the gap type, and to acquire instantaneous meters or stage meters of the polymer material coil and instantaneous gap setting parameters or stage gap setting parameters according to the detection parameters;

[0124] A calculation submodule, for calculating theoretical outer diameter parameters of the polymer material rewind according to the instantaneous number of meters or the stage number of meters of the polymer material coil and the instantaneous gap setting parameters or the stage gap setting parameters;

[0125] The theoretical outer diameter calculation formula for a single gap is:

[0126]

[0127] Wherein, R1 represents the theoretical outer diameter under a single gap type, r represents the initial radius of the polymer material rewinding, l represents the instantaneous number of meters, s represents the PI thickness of the polymer material coil, and m represents the initial gap setting parameter under a single gap type;

[0128] The theoretical outer diameter calculation formula for the stage gap is:

[0129]

[0130] Where R2 represents the theoretical outer diameter under the stage gap type, N represents the number of gap distribution stages, i represents the i-th stage, l i Expressed as the number of stages in meters for the i-th stage.

[0131] In one embodiment, Figure 4 As shown, the acquisition module 302 includes:

[0132] The image acquisition and processing submodule 3021 is used to acquire multi-angle position image information of the polymer material coil using CCD technology, and perform edge detection and morphological processing on the multi-angle position image information to obtain a three-dimensional image of the polymer material coil;

[0133] The division and classification module 3022 is used to detect the instantaneous outer diameter parameters of the polymer material rewind based on the three-dimensional image and the three-party detection tool, divide the three-dimensional image into different areas according to a preset threshold value and classify the pixel values in each area;

[0134] A definition submodule 3023 is configured to determine the pixel density difference of each region according to the classification result, and define the region with the most concentrated pixel density difference as a key local region;

[0135] The second determining submodule 3024 is configured to measure the gap between layers in the key local area using a three-party detection tool, and determine the gap parameters between layers based on the measurement results.

[0136] In one embodiment, the comparison module includes:

[0137] The third determination submodule is used to obtain the preparation process parameters of the artificial graphite thermal conductive film and determine the calibration gap parameters of the rewinding of the polymer material before heat treatment according to the preparation process parameters;

[0138] The first comparison submodule is used to compare the gap parameters between key local layers with the calibrated gap parameters to determine data consistency;

[0139] The second comparison submodule is used to obtain the outer diameter values of the theoretical outer diameter parameter and the instantaneous outer diameter parameter respectively, and compare the outer diameter data to determine the numerical consistency.

[0140] In one embodiment, the second determining module includes:

[0141] a fourth determination submodule, configured to determine a gap data deviation and an outer diameter data deviation of the polymer material rewinding according to the comparison result, and determine a specification deviation and a process deviation based on the gap data deviation and the outer diameter data deviation;

[0142] a fifth determination submodule, for determining the inspection quality of the polymer material rewinding according to the specification deviation and the process deviation, and determining the functional mechanism abnormality factor according to the inspection quality;

[0143] a sixth determination submodule, for determining the eligibility of the polymer material rewinding according to the functional mechanism abnormality factor, and determining a feedback mechanism based on the eligibility;

[0144] The selection submodule is used to select an appropriate processing method according to the feedback mechanism, and to issue an alarm or stop the work according to the processing method.

[0145] Those skilled in the art should understand that the first and second in the present invention simply refer to different application stages.

[0146] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow from the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0147] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An online full inspection method for the rewinding quality of polymer materials before heat treatment, characterized in that: The following steps are involved: Determine the gap type of the polymer material coil and determine the theoretical outer diameter parameters of the polymer material rewinding according to the gap type; The instantaneous outer diameter parameters of the polymer material rewinding and the gap parameters between key local layers are obtained through CCD technology; Compare the consistency of the gap parameters between key local layers with the set parameters, and compare the consistency of the theoretical outer diameter parameters with the instantaneous outer diameter parameters; The inspection quality of the polymer material rewinding is determined based on the comparison results, and the eligibility of the polymer material rewinding is determined based on the inspection quality.

2. The method for online full inspection of the rewinding quality of polymer materials before heat treatment according to claim 1, characterized in that: The method of determining the gap type of the polymer material coil and determining the theoretical outer diameter parameter of the polymer material rewinding according to the gap type includes: Detecting the number of gaps in the polymer material coil and determining the gap type of the polymer material coil according to the number of gaps, wherein the gap type includes: single gap and step gap; Determining detection parameters for the polymer material coil according to the gap type, and obtaining instantaneous meters or stage meters of the polymer material coil and instantaneous gap setting parameters or stage gap setting parameters according to the detection parameters; Calculating theoretical outer diameter parameters of the polymer material rewinding according to the instantaneous number of meters or stage number of meters of the polymer material coil and the instantaneous gap setting parameters or stage gap setting parameters; The theoretical outer diameter calculation formula for a single gap is: Wherein, R1 represents the theoretical outer diameter under a single gap type, r represents the initial radius of the polymer material rewinding, l represents the instantaneous number of meters, s represents the PI thickness of the polymer material coil, and m represents the initial gap setting parameter under a single gap type; The theoretical outer diameter calculation formula for the stage gap is: Where R2 represents the theoretical outer diameter under the stage gap type, N represents the number of gap distribution stages, i represents the i-th stage, l i Expressed as the number of stages in meters for the i-th stage.

3. The online full inspection method for the rewinding quality of polymer materials before heat treatment according to claim 1 is characterized in that: The method of obtaining the instantaneous outer diameter parameters of the polymer material rewinding and the gap parameters between key local layers by using CCD technology includes: The multi-angle position image information of the polymer material coil is collected by CCD technology, and the edge detection and morphological processing of the multi-angle position image information are performed to obtain a three-dimensional image of the polymer material coil; The instantaneous outer diameter parameters of the polymer material rewind are detected based on the 3D image and the three-party detection tool. The 3D image is divided into different areas by a pre-set threshold and the pixel values in each area are classified; Determine the pixel density difference of each area based on the classification results, and define the area with the most concentrated pixel density difference as the key local area; The three-party detection tool is used to measure the gap between layers in key local areas, and the gap parameters between layers are determined based on the measurement results.

4. The method for online full inspection of the rewinding quality of polymer materials before heat treatment according to claim 1, characterized in that: The comparison of the consistency of the gap parameters between key local layers and the set parameters, and the comparison of the consistency of the theoretical outer diameter parameters and the instantaneous outer diameter parameters, includes: Obtaining the preparation process parameters of the artificial graphite thermal conductive film, and determining the calibration gap parameters of the rewinding of the polymer material before heat treatment based on the preparation process parameters; Compare the gap parameters between key local layers with the calibrated gap parameters to determine data consistency; Obtain the outer diameter values of the theoretical outer diameter parameter and the instantaneous outer diameter parameter respectively, and compare the outer diameter data to determine the numerical consistency.

5. The method for online full inspection of the rewinding quality of polymer materials before heat treatment according to claim 1, characterized in that: Determining the inspection quality of the polymer material rewinding according to the comparison results, and determining the eligibility of the polymer material rewinding according to the inspection quality, includes: Determine the gap data deviation and outer diameter data deviation of the polymer material rewinding based on the comparison results, and determine the specification deviation and process deviation based on the gap data deviation and outer diameter data deviation; Determine the inspection quality of polymer material rewinding based on specification deviation and process deviation, and determine the abnormal factors of functional mechanism based on the inspection quality; Determine the eligibility of polymer material rewinding based on the abnormal factors of functional mechanism, and determine the feedback mechanism based on the eligibility; Select the appropriate processing method based on the feedback mechanism, and issue an alarm or stop work based on the processing method.

6. An online full inspection system for the rewinding quality of polymer materials before heat treatment, characterized by: The system includes: The first determination module is used to determine the gap type of the polymer material coil and determine the theoretical outer diameter parameter of the polymer material rewinding according to the gap type; An acquisition module is used to obtain the instantaneous outer diameter parameters of the polymer material rewinding and the gap parameters between key local layers through CCD technology; Comparison module, used to compare the consistency of gap parameters between key local layers with set parameters, and to compare the consistency of theoretical outer diameter parameters with instantaneous outer diameter parameters; The second determination module is used to determine the inspection quality of the polymer material rewinding according to the comparison result, and determine the eligibility of the polymer material rewinding according to the inspection quality.

7. The online full inspection system for the rewinding quality of polymer materials before heat treatment according to claim 6 is characterized in that: The first determining module includes: A first determination submodule is configured to detect the number of gaps in the polymer material coil and determine the gap type of the polymer material coil according to the number of gaps, wherein the gap types include single gap and step gap; A first acquisition submodule is configured to determine detection parameters for the polymer material coil according to the gap type, and to acquire instantaneous meters or stage meters of the polymer material coil and instantaneous gap setting parameters or stage gap setting parameters according to the detection parameters; A calculation submodule, for calculating theoretical outer diameter parameters of the polymer material rewind according to the instantaneous number of meters or the stage number of meters of the polymer material coil and the instantaneous gap setting parameters or the stage gap setting parameters; The theoretical outer diameter calculation formula for a single gap is: Wherein, R1 represents the theoretical outer diameter under a single gap type, r represents the initial radius of the polymer material rewinding, l represents the instantaneous number of meters, s represents the PI thickness of the polymer material coil, and m represents the initial gap setting parameter under a single gap type; The theoretical outer diameter calculation formula for the stage gap is: Where R2 represents the theoretical outer diameter under the stage gap type, N represents the number of gap distribution stages, i represents the i-th stage, l i Expressed as the number of stages in meters for the i-th stage.

8. The online full inspection system for the rewinding quality of polymer materials before heat treatment according to claim 6 is characterized in that: The acquisition module includes: The image acquisition and processing submodule is used to acquire multi-angle position image information of the polymer material coil through CCD technology, and perform edge detection and morphological processing on the multi-angle position image information to obtain a three-dimensional image of the polymer material coil; The division and classification module is used to detect the instantaneous outer diameter parameters of the polymer material rewind based on the three-dimensional image and the three-party detection tool, divide the three-dimensional image into different areas according to the pre-set threshold value and classify the pixel values in each area; A submodule is defined to determine the pixel density difference of each region based on the classification results, and the region with the most concentrated pixel density difference is defined as the key local region; The second determination submodule is used to measure the gap between layers in the key local area by using a three-party detection tool, and determine the gap parameters between layers according to the measurement results.

9. The online full inspection system for the rewinding quality of polymer materials before heat treatment according to claim 6, characterized in that: The comparison module includes: The third determination submodule is used to obtain the preparation process parameters of the artificial graphite thermal conductive film and determine the calibration gap parameters of the rewinding of the polymer material before heat treatment according to the preparation process parameters; The first comparison submodule is used to compare the gap parameters between key local layers with the calibrated gap parameters to determine data consistency; The second comparison submodule is used to obtain the outer diameter values of the theoretical outer diameter parameter and the instantaneous outer diameter parameter respectively, and compare the outer diameter data to determine the numerical consistency.

10. The online full inspection system for the rewinding quality of polymer materials before heat treatment according to claim 6, characterized in that: The second determining module includes: a fourth determination submodule, configured to determine a gap data deviation and an outer diameter data deviation of the polymer material rewinding according to the comparison result, and determine a specification deviation and a process deviation based on the gap data deviation and the outer diameter data deviation; a fifth determination submodule, for determining the inspection quality of the polymer material rewinding according to the specification deviation and the process deviation, and determining the functional mechanism abnormality factor according to the inspection quality; a sixth determination submodule, for determining the eligibility of the polymer material rewinding according to the functional mechanism abnormality factor, and determining a feedback mechanism based on the eligibility; The selection submodule is used to select an appropriate processing method according to the feedback mechanism, and to issue an alarm or stop the work according to the processing method.

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