A printing control method and system for paper packaging

Abstract

The present invention relates to the technical field of printing control of paper packaging, and provides a printing control method and system for paper packaging. The method comprises: obtaining printing images under different embossing roller gaps, extracting paper packaging parameters in the printing images by using image processing technology, substituting each parameter data into a corresponding accuracy and gap relationship model, constructing a gap adjustment model that can reflect the current printing control characteristics of the paper packaging, and calculating the gap adjustment value, so that the gap of the embossing roller can ensure the compression resistance of the paper packaging while meeting the printing control requirements of the paper packaging, thereby improving the printing quality and printing efficiency of the paper packaging.

Description

Technical Field

[0001] The present invention relates to the technical field of paper packaging printing, and in particular to a printing control method and system for paper packaging. Background Art

[0002] In the pressure feeding method, the corrugated cardboard is located between the paper feeding rubber roller and the paper feeding flower roller. In order to ensure that the ink is pressed on the paper surface and the paper feeding accuracy is guaranteed, a certain pressure needs to be applied between the rollers. The pressure is adjusted by changing the roller spacing.

[0003] The size of printing pressure is the key to ensure the quality of printed products. If the pressure is too heavy, the flexible plate will be squeezed and deformed, the lines and dots will spread outward, the lines will become thicker, and the strength of the paperboard will decrease. If the pressure is too light, the image and text will not be true; and when the pressure is too high, the corrugated paperboard will be easily crushed, affecting the subsequent printing accuracy, and the essential function of paper packaging as packaging is to fail to protect the stored items. In the existing technology, the pressure control of paper packaging during printing control is manually adjusted by workers, which is inefficient and inaccurate. Summary of the invention

[0004] The invention provides a printing control method for paper packaging, which is used to solve the problem in the prior art that pressure control during printing control of paper packaging is manually adjusted by workers, which is inefficient and inaccurate.

[0005] A first aspect of the present invention provides a printing control method for paper packaging, comprising:

[0006] Setting a first embossing roller gap to obtain a corresponding first printed image and a second printed image; setting a second embossing roller gap to obtain a corresponding third printed image and a fourth printed image;

[0007] The first printed image and the third printed image are respectively compared with a preset standard printed image to obtain a first image accuracy and a second image accuracy; the second printed image and the fourth printed image are respectively image recognized to obtain a first paper packaging thickness and a second paper packaging thickness;

[0008] Substitute the first image accuracy, the second image accuracy, the first embossing roller gap, and the second embossing roller gap into the accuracy and gap relationship model to obtain the first image accuracy parameter and the second image accuracy parameter. The accuracy and gap relationship model is specifically:

[0009]

[0010] Wherein, η1 is the accuracy of the first printed image, η2 is the accuracy of the second printed image, d1 is the first embossing roller spacing, d2 is the second embossing roller spacing, a is the first image accuracy parameter, b is the second image accuracy parameter, and λ is the accuracy correction parameter;

[0011] The current paper packaging specifications are obtained, and the data is substituted into the gap adjustment model to obtain the gap adjustment value. The gap adjustment model is specifically:

[0012]

[0013] Where D is the gap adjustment value, θ is the minimum accuracy threshold, is the compression performance parameter of paper packaging, h1 is the thickness of the first paper packaging, h2 is the thickness of the second paper packaging, and h0 is the current standard thickness of paper packaging;

[0014] The roller spacing is controlled according to the gap adjustment value.

[0015] Optionally, the performing image recognition on the second printed image and the fourth printed image respectively to obtain the first paper packaging thickness and the second paper packaging thickness is specifically:

[0016] The second printed image and the fourth printed image are respectively subjected to image preprocessing, and then feature extraction is performed to identify the edges and corners of the paper packaging in the image, and the edges and corners are analyzed and sized based on computer vision to obtain the corresponding first paper packaging thickness and second paper packaging thickness.

[0017] Optionally, after acquiring the corresponding first printing image and second printing image, the method further includes: acquiring a first environmental humidity; and before acquiring the gap adjustment value to control the roller spacing, the method further includes: acquiring the current environmental humidity, substituting the current environmental humidity and the first environmental humidity into a preset humidity correction model to obtain a corrected gap adjustment value, wherein the humidity correction model is specifically:

[0018] D1=D+ε(R1-R2)

[0019] Wherein, D is the gap adjustment value, D1 is the corrected gap adjustment value, ε is the parameter affecting humidity on paper packaging, R1 is the first ambient humidity, and R2 is the current ambient humidity.

[0020] A second aspect of the present application provides a printing control system for paper packaging, comprising:

[0021] An image acquisition module, used to set a first embossing roller gap to acquire a corresponding first printed image and a second printed image; set a second embossing roller gap to acquire a corresponding third printed image and a fourth printed image;

[0022] An image processing module is used to compare the first printed image and the third printed image with a preset standard printed image to obtain a first image accuracy and a second image accuracy; and to perform image recognition on the second printed image and the fourth printed image to obtain a first paper packaging thickness and a second paper packaging thickness;

[0023] The adjustment value calculation module is used to substitute the first image accuracy, the second image accuracy, the first embossing roller gap and the second embossing roller gap into the accuracy and gap relationship model to obtain the first image accuracy parameter and the second image accuracy parameter, wherein the accuracy and gap relationship model is specifically:

[0024]

[0025] Wherein, η1 is the accuracy of the first printed image, η2 is the accuracy of the second printed image, d1 is the first embossing roller spacing, d2 is the second embossing roller spacing, a is the first image accuracy parameter, v is the second image accuracy parameter, and λ is the accuracy correction parameter;

[0026] The current paper packaging specifications are obtained, and the data is substituted into the gap adjustment model to obtain the gap adjustment value. The gap adjustment model is specifically:

[0027]

[0028] Where D is the gap adjustment value, θ is the minimum accuracy threshold, is the compression performance parameter of paper packaging, h1 is the thickness of the first paper packaging, h2 is the thickness of the second paper packaging, and h0 is the current standard thickness of paper packaging;

[0029] The printing control module is used for controlling the roller spacing according to the gap adjustment value.

[0030] Optionally, in the image processing module, image recognition is performed on the second printed image and the fourth printed image respectively to obtain the first paper packaging thickness and the second paper packaging thickness, specifically:

[0031] The second printed image and the fourth printed image are respectively subjected to image preprocessing, and then feature extraction is performed to identify the edges and corners of the paper packaging in the image, and the edges and corners are analyzed and sized based on computer vision to obtain the corresponding first paper packaging thickness and second paper packaging thickness.

[0032] Optionally, after acquiring the corresponding first printing image and second printing image, the image acquisition module further includes: acquiring the first environmental humidity; and before acquiring the gap adjustment value to control the roller spacing, the printing control module further includes: acquiring the current environmental humidity, substituting the current environmental humidity and the first environmental humidity into a preset humidity correction model to obtain a corrected gap adjustment value, wherein the humidity correction model is specifically:

[0033] D1=D+ε(R1-R2)

[0034] Wherein, D is the gap adjustment value, D1 is the corrected gap adjustment value, ε is the parameter affecting humidity on paper packaging, R1 is the first ambient humidity, and R2 is the current ambient humidity.

[0035] A third aspect of the present application provides a printing control method device for paper packaging, the device comprising a processor and a memory:

[0036] The memory is used to store program codes and transmit the program codes to the processor;

[0037] The processor is used to execute the printing control method for paper packaging described in any one of the first aspects of the present invention according to the instructions in the program code.

[0038] A fourth aspect of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium is used to store program codes, and the program codes are used to execute a printing control method for paper packaging as described in any one of the first aspects of the present invention.

[0039] It can be seen from the above technical scheme that the present invention has the following advantages: by acquiring the printed images under different embossing roller gaps, the paper packaging parameters in the printed images are extracted by image processing technology, and each parameter data is substituted into the corresponding accuracy and gap relationship model, a gap adjustment model that can reflect the current paper packaging printing characteristics is constructed, and the gap adjustment value is calculated, so that the gap of the embossing roller can ensure the compression resistance of the paper packaging while meeting the requirements of paper packaging printing, thereby improving the printing quality and printing efficiency of the paper packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0041] Figure 1It is a flow chart of a printing control method for paper packaging;

[0042] Figure 2 The figure is a structural diagram of a printing control system for paper packaging. DETAILED DESCRIPTION

[0043] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The invention provides a printing control method for paper packaging, which is used to solve the problem in the prior art that pressure control during printing control of paper packaging is manually adjusted by workers, which is inefficient and inaccurate.

[0045] See also Figure 1 , Figure 1 The present invention provides a first flow chart of a printing control method for paper packaging according to an embodiment of the present invention.

[0046] S100, setting a first embossing roller gap to obtain a corresponding first printed image and a second printed image; setting a second embossing roller gap to obtain a corresponding third printed image and a fourth printed image;

[0047] It should be noted that the change in the gap between the embossing rollers corresponds to the change in the pressure applied to the paper packaging during the printing of the ink. Before printing, the gap between the embossing rollers is set with two preset parameter values, and printing is performed respectively. The paper packaging obtained after printing is photographed to obtain the corresponding printed images under each gap between the embossing rollers.

[0048] The first printed image and the third printed image are images of the printing control effect of the paper packaging when viewed from above. After being printed by the printing press, the paper packaging leaves the machine conveyor belt in a flat manner, and the printed pattern can be identified in the top-view image; while the second printed image and the fourth printed image are images of the paper packaging when viewed from the side, and the thickness of the paper packaging can be identified in the side-view image.

[0049] S200, respectively comparing the first printed image and the third printed image with a preset standard printed image to obtain a first image accuracy and a second image accuracy; respectively performing image recognition on the second printed image and the fourth printed image to obtain a first paper packaging thickness and a second paper packaging thickness;

[0050] It should be noted that the preset standard printed image is an image to be printed on the paper package, which is stored in the form of image data and should be converted into the same color type when compared with the first printed image and the third printed image; the accuracy reflects the degree of similarity between the first printed image or the third printed image and the standard printed image, that is, the similarity, which can be calculated by the mean square error (MSE), structural similarity index (SSIM), peak signal-to-noise ratio (PSNR), histogram comparison, perceptual hashing algorithm (PHash) and mutual information. The higher the accuracy, the higher the user's recognition of the printed information on the paper package, and the better the printing effect;

[0051] For the second printed image and the fourth printed image, image segmentation must be performed first to divide the image area belonging to the paper packaging to reduce environmental interference. The paper packaging faced in this embodiment is mainly packaging of corrugated paper and other cartons. The size of the paper packaging is measured in the divided image area to obtain the first paper packaging thickness and the second paper packaging thickness respectively. Generally, the width of the embossing roller is greater than the width of the paper packaging. The embossing roller has a uniform effect on the thickness of the corrugated paper, and there will be no thickness difference in the moving direction perpendicular to the paper packaging.

[0052] S300, substituting the first image accuracy, the second image accuracy, the first embossing roller gap and the second embossing roller gap into an accuracy and gap relationship model to obtain a first image accuracy parameter and a second image accuracy parameter, wherein the accuracy and gap relationship model is specifically:

[0053]

[0054] Wherein, η1 is the accuracy of the first printed image, η2 is the accuracy of the second printed image, d1 is the first embossing roller spacing, d2 is the second embossing roller spacing, a is the first image accuracy parameter, b is the second image accuracy parameter, and λ is the accuracy correction parameter;

[0055] The current paper packaging specifications are obtained, and the data is substituted into the gap adjustment model to obtain the gap adjustment value. The gap adjustment model is specifically:

[0056]

[0057] Where D is the gap adjustment value, θ is the minimum accuracy threshold, is the compression performance parameter of paper packaging, h1 is the thickness of the first paper packaging, h2 is the thickness of the second paper packaging, and h0 is the current standard thickness of paper packaging;

[0058] It should be noted that, regarding the impact of the embossing roller on the printing quality, if the printing pressure is too high, it will lead to printing defects such as ghosting, blurred handwriting, ink accumulation, rough edges, and uneven brightness, while if the printing pressure is too low, it will lead to printing defects such as unclear printing, poor ink application, and incomplete patterns. Both too high and too low embossing pressure will lead to reduced accuracy, and based on this, an accuracy and gap relationship model is established. Although in actual printing, there should be an interval of values ​​with a stable and high printing accuracy, in this embodiment, the gap and printing accuracy relationship can be approximately regarded as having an optimal value, that is, when the corresponding gap value is the first parameter a of image accuracy, but in the use of this relationship model, the accuracy exceeding a certain preset value should be the best, and the accuracy correction parameter λ is used to adjust the degree of correlation, and is preset according to the empirical value. The value of the accuracy correction parameter λ is less than 1 and is a positive value; after substituting the first image accuracy, the second image accuracy, the first embossing roller gap, and the second embossing roller gap into the accuracy and gap relationship model, two accuracy parameters reflecting the gap and accuracy relationship under the current embossing machine can be obtained;

[0059] In the first formula of the gap adjustment model, a gap adjustment value interval can be obtained according to the characteristics of the current embossing machine and paper packaging. The accuracy of the image embossed within this interval meets the printing requirements. The minimum accuracy threshold θ is set according to the experience value. When it is above this accuracy threshold, the image is considered to be consistent and the printing is accurate. A wavy core paper interlayer is arranged inside the corrugated paper packaging. Although the wavy structure makes the corrugated paper have certain compression resistance and buffering properties, the paper core interlayer itself still has plasticity and cannot be completely restored after being deformed by pressure. That is, the corrugated paper packaging passes through the embossing roller. It will be compressed to a certain thickness during printing, but it can recover to a certain thickness after leaving the embossing roller, but it cannot recover to the original thickness. The thickness leaving the embossing roller is proportional to the original thickness. The compressive buffering performance of corrugated paper is provided by the wavy inner core. When the thickness after embossing is too small, the wavy structure cannot provide sufficient compressive buffering performance, which reflects that the corrugated paper is crushed. Because corrugated paper has a single-layer, double-layer or even triple-layer wavy inner core, the force is uniformly compressed and rebounded in the same proportion when multiple layers are used. Therefore, when constructing the gap adjustment model, the paper packaging compressive performance parameters are set according to empirical values. When the original thickness is compressed below the parameter ratio, the corrugated paper is considered to be crushed and loses its compressive buffering performance. The compressive performance parameters of the paper packaging can be adjusted according to the actual carton usage requirements; the gap adjustment model can be used to obtain the gap adjustment value that meets the printing control requirements of the paper packaging and ensures the performance of the paper packaging.

[0060] S400, controlling the roller spacing according to the gap adjustment value.

[0061] It should be noted that the spacing between the anilox roller or the plate roller can be controlled by a gap adjustment mechanism. After the gap adjustment value is obtained in the aforementioned step S300, it is sent to the control system of the gap adjustment mechanism, and the gap is adjusted electronically so that the roller gap of the printing press can meet the printing requirements and ensure the performance of paper packaging to the greatest extent.

[0062] In this embodiment, by acquiring printed images under different embossing roller gaps, the paper packaging parameters in the printed images are extracted using image processing technology, and each parameter data is substituted into the corresponding accuracy and gap relationship model, a gap adjustment model that can reflect the current printing control characteristics of the paper packaging is constructed, and the gap adjustment value is calculated, so that the gap of the embossing roller can ensure the compression resistance of the paper packaging while meeting the printing control requirements of the paper packaging, thereby improving the printing quality and printing efficiency of the paper packaging.

[0063] The above is a detailed description of the first embodiment of a printing control method for paper packaging provided by the present application. The following is a detailed description of the second embodiment of a printing control method for paper packaging provided by the present application.

[0064] In this embodiment, a printing control method for paper packaging is further provided. In the aforementioned step S200, the second printed image and the fourth printed image are respectively subjected to image recognition to obtain the first paper packaging thickness and the second paper packaging thickness, specifically:

[0065] The second printed image and the fourth printed image are respectively subjected to image preprocessing, and then feature extraction is performed to identify the edges and corners of the paper packaging in the image, and the edges and corners are analyzed and sized based on computer vision to obtain the corresponding first paper packaging thickness and second paper packaging thickness.

[0066] It should be noted that the collected second printed image and the fourth printed image are preprocessed, such as denoising, enhancement and other operations, to improve the image quality and the accuracy of subsequent processing; these processes help to reduce interference factors in the image, making subsequent feature extraction and object recognition more accurate; using, for example, an edge detection algorithm, feature points such as edges and corners are extracted from the processed image as the basis for subsequent object recognition and positioning; using computer vision technology, such as a machine learning algorithm, the extracted feature points are analyzed to identify the objects in the image and determine their positions in the image; the actual size of the object is calculated based on the preset algorithm according to the pixel information of the object and the known camera parameters, and the pixel information in the image is converted into the actual physical size to obtain the thickness data of the paper packaging.

[0067] Furthermore, in the aforementioned step S100, the first ambient humidity is also obtained; in the aforementioned step S400, before the gap adjustment value is obtained to control the roller spacing, the method further includes: obtaining the current ambient humidity, substituting the current ambient humidity and the first ambient humidity into a preset humidity correction model to obtain a corrected gap adjustment value, wherein the humidity correction model is specifically:

[0068] D1=D+ε(R1-R2)

[0069] Wherein, D is the gap adjustment value, D1 is the corrected gap adjustment value, ε is the parameter affecting humidity on paper packaging, R1 is the first ambient humidity, and R2 is the current ambient humidity.

[0070] It should be noted that the ambient humidity affects the hardness of the corrugated paper's wavy inner core. When the humidity is high, the thickness will be compressed thinner after being stamped by a stamping machine, which has a greater impact on the compressive resistance. The humidity in some areas varies greatly, and the humidity difference between seasons or even within the same day can reach 95%. Therefore, according to the humidity when the parameter data is obtained in the aforementioned step S100, and when the gap adjustment is actually required in step S400, the gap adjustment value is corrected according to the real-time humidity relationship. When the current ambient humidity is higher than the first ambient humidity during measurement, the gap adjustment value should be increased accordingly to avoid exacerbating the impact of pressure on the corrugated paper and to ensure the performance of the paper packaging. The parameter ε of the impact of humidity on paper packaging is less than 1, and the unit is mm / %RH. It can be obtained by measuring the thickness change of the corrugated paper at different humidity under the same stamping parameters, or set based on empirical values.

[0071] The above is a detailed description of a printing control method for paper packaging provided in the first aspect of the present application. The following is a detailed description of an embodiment of a printing control system for paper packaging provided in the second aspect of the present application.

[0072] See also Figure 2 , Figure 2 This embodiment provides a printing control system for paper packaging, including:

[0073] The image acquisition module 10 is used to set the first embossing roller gap to acquire the corresponding first and second printed images; set the second embossing roller gap to acquire the corresponding third and fourth printed images;

[0074] The image processing module 20 is used to compare the first printed image and the third printed image with a preset standard printed image to obtain a first image accuracy and a second image accuracy; and to perform image recognition on the second printed image and the fourth printed image to obtain a first paper packaging thickness and a second paper packaging thickness;

[0075] The adjustment value calculation module 30 is used to substitute the first image accuracy, the second image accuracy, the first embossing roller gap and the second embossing roller gap into the accuracy and gap relationship model to obtain the first image accuracy parameter and the second image accuracy parameter. The accuracy and gap relationship model is specifically:

[0076]

[0077] Wherein, η1 is the accuracy of the first printed image, η2 is the accuracy of the second printed image, d1 is the first embossing roller spacing, d2 is the second embossing roller spacing, a is the first image accuracy parameter, and b is the second image accuracy parameter;

[0078] The current paper packaging specifications are obtained, and the data is substituted into the gap adjustment model to obtain the gap adjustment value. The gap adjustment model is specifically:

[0079]

[0080] Where D is the gap adjustment value, θ is the minimum accuracy threshold, is the compression performance parameter of paper packaging, h1 is the thickness of the first paper packaging, h2 is the thickness of the second paper packaging, and h0 is the current standard thickness of paper packaging;

[0081] The printing control module 40 is used to control the roller spacing according to the gap adjustment value.

[0082] Furthermore, in the image processing module 20, image recognition is performed on the second printed image and the fourth printed image respectively to obtain the first paper packaging thickness and the second paper packaging thickness, specifically:

[0083] The second printed image and the fourth printed image are respectively subjected to image preprocessing, and then feature extraction is performed to identify the edges and corners of the paper packaging in the image, and the edges and corners are analyzed and sized based on computer vision to obtain the corresponding first paper packaging thickness and second paper packaging thickness.

[0084] Furthermore, in the image acquisition module 10, after acquiring the corresponding first printing image and second printing image, the first environment humidity is also acquired; in the printing control module 40, before acquiring the gap adjustment value to control the roller spacing, the current environment humidity is acquired, and the current environment humidity and the first environment humidity are substituted into a preset humidity correction model to obtain a corrected gap adjustment value, and the humidity correction model is specifically:

[0085] D1=D+ε(R1-R2)

[0086] Wherein, D is the gap adjustment value, D1 is the corrected gap adjustment value, ε is the parameter affecting humidity on paper packaging, R1 is the first ambient humidity, and R2 is the current ambient humidity.

[0087] The third aspect of the present application also provides a printing control method device for paper packaging, including a processor and a memory: the memory is used to store program code and transmit the program code to the processor; the processor is used to execute the above-mentioned printing control method for paper packaging according to the instructions in the program code.

[0088] A fourth aspect of the present application provides a computer-readable storage medium, characterized in that the computer-readable storage medium is used to store program codes, and the program codes are used to execute the above-mentioned printing control method for paper packaging.

[0089] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices and equipment can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0090] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0091] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0092] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0093] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0094] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A printing control method for paper packaging, characterized in that include: Setting a first embossing roller gap to obtain a corresponding first printed image and a second printed image; Setting a second embossing roller gap to obtain a corresponding third printing image and a fourth printing image; The first printed image and the third printed image are images of a paper package viewed from above, and printed patterns are displayed in the images viewed from above; The second printed image and the fourth printed image are images of the paper package in a side view, and the thickness of the paper package is displayed in the side view image; Respectively comparing the first printed image and the third printed image with a preset standard printed image to obtain a first image accuracy and a second image accuracy, wherein the first image accuracy and the second image accuracy are respectively similarities between the first image accuracy and the second image accuracy and the standard printed image; The second printed image and the fourth printed image are respectively subjected to image recognition to obtain the first paper package thickness and the second paper package thickness, specifically: the second printed image and the fourth printed image are respectively subjected to image preprocessing, and then feature extraction is performed to identify the edges and corners of the paper package in the image, and the edges and corners are analyzed and measured based on computer vision to obtain the corresponding first paper package thickness and second paper package thickness; Substitute the first image accuracy, the second image accuracy, the first embossing roller gap, and the second embossing roller gap into the accuracy and gap relationship model to obtain the first image accuracy parameter and the second image accuracy parameter. The accuracy and gap relationship model is specifically: Wherein, η1 is the accuracy of the first printed image, η2 is the accuracy of the second printed image, d1 is the first embossing roller spacing, d2 is the second embossing roller spacing, a is the first image accuracy parameter, b is the second image accuracy parameter, and λ is the accuracy correction parameter; The current paper packaging specifications are obtained, and the data is substituted into the gap adjustment model to obtain the gap adjustment value. The gap adjustment model is specifically: Where D is the gap adjustment value, θ is the minimum accuracy threshold, is the compression performance parameter of paper packaging, h1 is the thickness of the first paper packaging, h2 is the thickness of the second paper packaging, and h0 is the current standard thickness of paper packaging; The roller spacing is controlled according to the gap adjustment value.

2. A printing control system for paper packaging, characterized in that: include: An image acquisition module, used to set a first embossing roller gap and acquire a corresponding first printed image and a second printed image; Setting a second embossing roller gap to obtain a corresponding third printed image and a fourth printed image; the first printed image and the third printed image are images of a top view of the paper package, and a printed pattern is displayed in the top view image; The second printed image and the fourth printed image are images of the paper package in a side view, and the thickness of the paper package is displayed in the side view image; The image processing module is used to compare the first printed image and the third printed image with a preset standard printed image to obtain a first image accuracy and a second image accuracy, wherein the first image accuracy and the second image accuracy are respectively similarities between the first image accuracy and the second image accuracy and the standard printed image; and perform image recognition on the second printed image and the fourth printed image to obtain a first paper packaging thickness and a second paper packaging thickness, specifically: Preprocess the second printed image and the fourth printed image respectively, then extract features, identify edges and corners of the paper package in the image, analyze and measure the edges and corners based on computer vision, and obtain the corresponding thickness of the first paper package and the second paper package; The adjustment value calculation module is used to substitute the first image accuracy, the second image accuracy, the first embossing roller gap and the second embossing roller gap into the accuracy and gap relationship model to obtain the first image accuracy parameter and the second image accuracy parameter, wherein the accuracy and gap relationship model is specifically: Wherein, η1 is the accuracy of the first printed image, η2 is the accuracy of the second printed image, d1 is the first embossing roller spacing, d2 is the second embossing roller spacing, a is the first image accuracy parameter, b is the second image accuracy parameter, and λ is the accuracy correction parameter; The current paper packaging specifications are obtained, and the data is substituted into the gap adjustment model to obtain the gap adjustment value. The gap adjustment model is specifically: Where D is the gap adjustment value, θ is the minimum accuracy threshold, is the compression performance parameter of paper packaging, h1 is the thickness of the first paper packaging, h2 is the thickness of the second paper packaging, and h0 is the current standard thickness of paper packaging; The printing control module is used for controlling the roller spacing according to the gap adjustment value.

3. A printing control device for paper packaging, characterized in that: The device comprises a processor and a memory: The memory is used to store program code and transmit the program code to the processor; The processor is used to execute the printing control method for paper packaging according to claim 1 according to the instructions in the program code.

4. A computer-readable storage medium, characterized in that: The computer-readable storage medium is used to store program codes, and the program codes are used to execute the printing control method for paper packaging according to claim 1.

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