Production Method and System for Shell Diaphragm Based on Visual Detection

Abstract

The present invention relates to the technical fields of machine vision inspection, housings or structural parts of electrical equipment, digital industrial production processes of shell diaphragms, etc., and provides a shell diaphragm production method and system based on visual inspection. By photographing the shell diaphragm on the diaphragm output station of a roll transfer machine, an image of the shell diaphragm containing texture is obtained to perform texture defect analysis. When the diaphragm texture in the image of the shell diaphragm containing texture is obtained and there is no defect, the shell diaphragm without texture defects is conveyed to the roll-to-roll printing station. After the shell diaphragm without texture defects is obtained at the roll-to-roll printing station, the roll-to-roll printing machine is controlled to print bridging varnish, cover base color and bonding glue on the shell diaphragm without texture defects to obtain a qualified shell diaphragm, thereby improving the accuracy and efficiency of texture defect detection of the diaphragm substrate, reducing the detection cost of texture defects of the diaphragm substrate, and improving the production efficiency and quality of the shell diaphragm.

Description

Technical Field

[0001] The present invention relates to the technical fields of machine vision inspection, housings or structural parts of electrical equipment, and digital industrial production processes of housing diaphragms, and in particular to a housing diaphragm production method and system based on vision inspection. Background Art

[0002] In the design and production of the shell appearance of electronic devices such as mobile phones and tablets, as well as automotive interior parts, in order to meet consumer demand for the appearance of the shell, the shell is usually designed to be transparent and combined with a shell diaphragm with a decorative effect to enhance the aesthetics of the device. In order to achieve the decorative effect of the shell diaphragm, the existing technology uses a roll-to-roll transfer machine to transfer the texture on the master mold to the diaphragm substrate, and then manually inspect the texture on the diaphragm substrate. Then, a roll-to-roll printing machine is used to print a bridging varnish on the diaphragm substrate, and then the substrate base color is printed, and the laminating adhesive is printed to obtain the shell diaphragm. When the texture obtained by transfer on the diaphragm substrate has defects, the texture has appearance defects, which are difficult to detect by manual inspection, are relatively subjective, and the detection results are of low accuracy. Moreover, manual inspection also has problems such as low efficiency and high cost in terms of efficiency and cost.

[0003] In summary, in the prior art, the texture defect detection technology of the membrane substrate has technical problems such as low detection accuracy, low efficiency and high cost. Summary of the Invention

[0004] In response to the above-mentioned deficiencies in the existing technology, the present invention provides a shell diaphragm production method and system based on visual inspection to improve the accuracy and efficiency of texture defect detection of the diaphragm substrate, reduce the detection cost of texture defects of the diaphragm substrate, and improve the production efficiency and quality of the shell diaphragm.

[0005] In a first aspect, the present invention provides a method for producing a housing diaphragm based on visual inspection, comprising:

[0006] After detecting that a film output station of a roll-to-roll transfer machine outputs a shell film with a master mold texture transferred thereon, controlling a visual imaging module disposed above the film output station of the roll-to-roll transfer machine to photograph the shell film to obtain an image of the shell film with the texture;

[0007] Analyzing the film texture defects in the textured shell film image, and when it is determined that the film texture in the textured shell film image does not have any defects, conveying the shell film without any texture defects to a roll-to-roll printing station;

[0008] After the shell membrane without texture defects is obtained at the roll-to-roll printing station, the roll-to-roll printing machine is controlled to print bridging varnish, cover base color and bonding glue on the shell membrane without texture defects to obtain a qualified shell membrane.

[0009] In a second aspect, the present invention provides a housing membrane production system based on visual inspection, comprising:

[0010] Controlling the host computer to run the above-mentioned housing diaphragm production method based on visual inspection;

[0011] A roll-to-roll transfer machine, comprising a visual imaging module; the roll-to-roll transfer machine communicates with the control host and is configured to operate under the control of the control host;

[0012] The roll-to-roll printing machine communicates with the control host and is used for working under the control of the control host.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention provides a shell diaphragm production method and system based on visual inspection, after detecting that the diaphragm output station of the roll-to-roll transfer machine outputs the shell diaphragm with the master mold texture transferred, the visual imaging module arranged above the diaphragm output station of the roll-to-roll transfer machine is controlled to shoot the shell diaphragm to obtain a shell diaphragm image containing the texture, and the diaphragm texture defects in the shell diaphragm image containing the texture are analyzed. When it is obtained that the diaphragm texture in the shell diaphragm image containing the texture has no defects, the shell diaphragm without texture defects is conveyed to the roll-to-roll printing station. After the shell diaphragm without texture defects is obtained by conveying the roll-to-roll printing station, the roll-to-roll printing machine is controlled to print bridging varnish, cover base color and bonding glue on the shell diaphragm without texture defects to obtain a qualified shell diaphragm, thereby improving the accuracy and efficiency of texture defect detection of the diaphragm substrate, reducing the detection cost of texture defects of the diaphragm substrate, and improving the production efficiency and quality of the shell diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their description are used to explain the present invention and do not constitute an undue limitation of the present invention. Some specific embodiments of the present invention will be described in detail in an illustrative and non-restrictive manner with reference to the drawings. The same reference numerals in the drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the drawings:

[0016] Figure 1 This is a schematic flow chart of a method for producing a housing diaphragm based on visual inspection according to an embodiment of the present invention;

[0017] Figure 2 It is a schematic diagram of the architecture of a housing diaphragm production system based on visual inspection according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts should fall within the scope of protection of the present invention.

[0019] Example 1

[0020] See also Figure 1 , Figure 2 This embodiment provides a shell diaphragm production method based on visual inspection, including step S101, step S102 and step S103.

[0021] S101, after detecting that a film output station of a roll-to-roll transfer machine outputs a shell film with a master mold texture transferred thereto, controlling a visual imaging module disposed above the film output station of the roll-to-roll transfer machine to photograph the shell film to obtain an image of the shell film with the texture;

[0022] S102, analyzing film texture defects in the textured shell film image, and when it is determined that the film texture in the textured shell film image does not have defects, conveying the shell film without texture defects to a roll-to-roll printing station;

[0023] S103, after the shell membrane without texture defects is obtained at the roll-to-roll printing station, the roll-to-roll printing machine is controlled to print bridging varnish, cover base color and laminating glue on the shell membrane without texture defects to obtain a qualified shell membrane.

[0024] It should be noted that, in this embodiment, after detecting that the membrane output station of the roll-to-roll transfer machine outputs a shell membrane with the master mold texture transferred thereon, the visual imaging module arranged above the membrane output station of the roll-to-roll transfer machine is controlled to photograph the shell membrane to obtain an image of the shell membrane containing the texture, and the membrane texture defects in the image of the shell membrane containing the texture are analyzed. When it is obtained that the membrane texture in the image of the shell membrane containing the texture does not have defects, the shell membrane without texture defects is conveyed to the roll-to-roll printing station. After conveying the shell membrane without texture defects to the roll-to-roll printing station, the roll-to-roll printing machine is controlled to print bridging varnish, cover base color and bonding glue on the shell membrane without texture defects to obtain a qualified shell membrane, thereby improving the accuracy and efficiency of texture defect detection of the membrane substrate, reducing the detection cost of texture defects of the membrane substrate, and improving the production efficiency and quality of the shell membrane.

[0025] It should also be noted that in step S101, the visual imaging module enables the acquisition of texture images to be completed in real time on the production line. Since the visual imaging module can capture high-resolution images of the diaphragm surface, the high-resolution images can be used to accurately identify defects in basic textures and fine textures, which is more accurate than manual detection and greatly improves detection efficiency. Among them, the visual imaging module may include conventional technologies such as camera modules and light sources, which will not be repeated in this embodiment. In step S102, the acquired image of the shell diaphragm containing texture is analyzed to detect whether there are defects in the texture on the diaphragm. The use of image processing algorithms can more accurately identify subtle defects that may exist on the diaphragm, which has higher reliability and consistency than manual detection. It ensures that each shell diaphragm undergoes accurate texture defect detection in an automated manner, greatly reducing the possibility of defective products entering the next process. In step S103, only when the diaphragm texture is detected to be defect-free will the diaphragm be transported to the roll-to-roll printing station for subsequent printing processes of bridging varnish, base color, and laminating adhesive, ultimately obtaining a qualified shell diaphragm. This avoids subsequent processing on defective diaphragms, thereby reducing scrap rates and lowering material and production costs. By linking with step S102, the entire production process is more compact and efficient, improving overall production efficiency. Furthermore, when the diaphragm texture in the textured shell diaphragm image is found to be defective, the shell diaphragm with texture defects is transported to the waste recycling station.

[0026] In some preferred embodiments, the master pattern texture includes a base texture and a fine texture. When a specific type of texture is transferred to the shell membrane using the roll-to-roll transfer machine, the base texture from the master pattern is first transferred to the shell membrane, followed by the fine texture from the master pattern, overlaying it with the base texture. It should be noted that by transferring the base texture and fine texture separately, the shell membrane's sense of layering and visual depth can be effectively enhanced. The base texture typically provides a large, overall pattern or basic shape outline, forming the primary visual framework; the fine texture builds on this foundation by adding details such as shading, lines, or complex patterns, enriching the overall visual effect. Furthermore, base textures include a coarse grid texture, a wavy base texture, and a diamond grid texture. The coarse grid texture provides a simple and clear geometric structure, serving as the foundation layer of the shell membrane and enhancing the overall sense of structure. The wavy base texture can impart a soft, dynamic feel to the shell surface. The diamond grid texture, with its regular shape, provides a solid visual foundation, effectively supporting the subsequent overlay of fine textures. Furthermore, the fine texture includes: a delicate micro-dot texture and a fine line shadow texture; the delicate micro-dot texture is superimposed on a coarse grid texture, and the fine line shadow texture is superimposed on a wavy base texture. The fine dot texture superimposed on the coarse grid texture can increase the delicacy of the surface texture and provide a richer tactile experience. The fine line shadow added to the wavy base texture can enhance the three-dimensional effect, making the shell surface appear more realistic and deep.

[0027] In some preferred embodiments, after detecting that the film output station of the roll-to-roll transfer machine outputs a shell film with a transferred basic texture, the visual imaging module arranged above the film output station of the roll-to-roll transfer machine is controlled to photograph the shell film to obtain an image of the shell film containing the basic texture; the basic texture defects of the film in the image of the shell film containing the basic texture are analyzed, and when it is obtained that the basic texture of the film in the image of the shell film containing the basic texture does not have defects, the shell film without basic texture defects is printed with bridging varnish by the roll-to-roll printing machine; after printing the bridging varnish on the shell film without basic texture defects, the roll-to-roll transfer machine is used to transfer the The fine texture is transferred to the shell membrane and superimposed on the basic texture; after detecting that the membrane output station of the roll-to-roll transfer machine outputs the shell membrane with the fine texture transferred, the visual imaging module arranged above the membrane output station of the roll-to-roll transfer machine is controlled to shoot the shell membrane to obtain an image of the shell membrane with superimposed fine texture; the fine texture defects of the membrane in the image of the shell membrane with superimposed fine texture are analyzed, and when it is obtained that the fine texture of the membrane in the image of the shell membrane with superimposed fine texture does not have defects, the shell membrane without fine texture defects is printed with bridging varnish, cover base color and bonding glue by the roll-to-roll printing machine to obtain a qualified shell membrane. It should be noted that the basic texture and fine texture are separately inspected in different processes, and each step is ensured to be defect-free before entering the next process, so that the texture defects at each level can be more accurately identified and eliminated, avoiding the superposition or amplification of these defects in subsequent processes, so that the final shell membrane has higher surface quality and consistency. After the basic texture is inspected, the bridging varnish is printed, and then the fine texture is transferred, so that the basic texture can better maintain its structural stability under the protection of the bridging varnish, thereby reducing deformation or damage during the subsequent transfer of the fine texture. Among them, the basic texture includes a coarse line grid texture, a wavy basic texture, and a diamond grid texture; the fine texture includes: a delicate micro-dot texture and a fine line shadow texture; the delicate micro-dot texture is superimposed on the coarse line grid texture, and the fine line shadow texture is superimposed on the wavy basic texture. Furthermore, the defects of the coarse line grid texture include texture breakage or missing and inconsistent line thickness; the defects of the wavy basic texture include deviation in the starting position of the texture and uneven amplitude of the wave; the defects of the diamond grid texture include changes in grid line spacing, the grid is not arranged according to the predetermined position, and grid lines are broken or missing. It should be noted that inconsistent line thickness, uneven amplitude of the wave, or changes in grid line spacing will destroy the overall sense of structure and affect visual beauty. If the coarse line grid or diamond grid is broken or part of the texture is missing, the entire texture structure may be interrupted or incomplete, which will directly destroy the integrity of the basic texture and significantly affect the effect of subsequent processes.Failure to align grid lines according to the intended layout, or deviations in the starting position of the wavy texture, can cause the texture to deviate from the intended design, leading to misalignment when overlaying subsequent fine textures and compromising the overall decorative effect. Furthermore, defects with fine, micro-dot textures include blurred textures, missing dots, and misalignment when overlaying with the base texture. Defects with fine line shadow textures include incomplete lines within the shadow texture and misalignment when overlaying with the base texture. It should be noted that fine textures are characterized by fine lines and complex textures. Therefore, if blurring or unclearness occurs during the transfer process, details will be weakened and the desired decorative effect will be lost. Furthermore, the complexity of fine textures can lead to loss of detail during the transfer process due to process issues. For example, dots in the dot texture may be partially missing, or lines in the shadow texture may be incomplete, directly affecting the overall texture appearance. Furthermore, since the fine texture is overlaid on the base texture, inaccurate overlap between the fine texture and the base texture can result in a visual ghosting effect or misalignment. Such defects can significantly undermine the overall sense of refinement and compromise the final decorative effect.

[0028] In some preferred embodiments, the roll-to-roll printing press, when printing a bridging varnish, a cover base color, and a laminating adhesive on a shell film without fine texture defects, includes: printing a bridging varnish on the shell film without fine texture defects to cover the texture layer of the shell film with a layer of bridging varnish; printing a cover base color on the shell film with the texture layer covered with the bridging varnish to form a non-transparent layer on the bottom side of the shell film; and printing a laminating adhesive on the shell film with the non-transparent layer on the bottom side to obtain a qualified shell film. When printing the cover base color on the shell film with the texture layer covered with the bridging varnish, the cover base color is printed two to three times. It should be noted that the bridging varnish is a transparent protective layer that covers the texture layer, protecting it and providing adhesion to subsequent process layers. The bridging varnish effectively encapsulates the texture, preventing it from being worn, scratched, or fading or deteriorating due to environmental influences during subsequent handling or use. Printing the cover base color on the texture layer is intended to create an opaque base layer. This layer serves two primary functions: first, it masks the reverse side of the textured layer, ensuring the underside of the housing membrane remains opaque and enhancing the product's visual appeal; second, it provides a color foundation for the final product's appearance, adding visual depth and aesthetic appeal. Printing the laminating adhesive ensures good adhesion for the housing membrane, allowing it to securely bond with other components. Printing a bridging varnish, as the first step, provides a smooth and stable base for the subsequent cover base color and laminating adhesive, which is crucial for achieving excellent printing quality. The cover base color follows closely behind, ensuring a flawless visual presentation. Finally, the laminating adhesive ensures a tight bond between the membrane and other components, improving overall production efficiency and ensuring a high-quality final product. Furthermore, multiple printing passes of the cover base color effectively enhance the light-blocking properties of the non-transparent layer, particularly in applications requiring complete opacity, such as mobile phone cases and automotive interiors. While a single print may not completely mask the underlying texture or base color, two or three print passes can ensure the required light-blocking properties of the cover base color layer, preventing the underlying texture or color from showing through and affecting the overall visual effect. Furthermore, before printing the laminating adhesive, the shell diaphragm with the printed cover base color is subjected to a light transmittance test. The shell diaphragm that passes the light transmittance test enters the printing laminating adhesive process, and the shell diaphragm that fails the light transmittance test is re-printed with the cover base color. It should be noted that the main function of the cover base color is to ensure that a light-proof, non-transparent layer is formed on the bottom side of the shell diaphragm. If the cover base color is not printed evenly or the coverage is insufficient, it may cause light transmission in certain areas of the diaphragm, which will directly affect the appearance and function of the final product. Therefore, the light transmittance test is to ensure the integrity and opacity of the base color layer to prevent defective diaphragms from entering the next process.

[0029] In some preferred embodiments, transferring the basic texture in the master mold texture to the shell diaphragm includes: controlling the feed roller of the roll-to-roll transfer machine to drive the substrate of the shell diaphragm to move to the bottom of the pressure roller of the roll-to-roll transfer machine and contact the basic texture master mold covered on the pressure roller of the roll-to-roll transfer machine; controlling the curing coating nozzle of the roll-to-roll transfer machine to spray the basic texture UV curing coating into the contact gap between the master mold and the diaphragm; photocuring the basic texture UV curing coating so that the basic texture of the basic texture master mold is transferred to the substrate of the shell diaphragm through the basic texture UV curing coating. Transferring the fine texture from the master mold to the shell membrane, where it is superimposed on the base texture, includes: controlling the feed roller of a roll-to-roll transfer machine to move the film substrate containing the base texture beneath the roll-to-roll transfer machine's pressure roller, where it contacts the fine texture master mold covered by the pressure roller; spraying a fine texture UV-curable coating from a curing coating nozzle of the roll-to-roll transfer machine into the contact gap between the master mold and the membrane; and light-curing the fine texture UV-curable coating to transfer the fine texture from the fine texture master mold to the shell membrane, where it is superimposed on the base texture. It should be noted that by transferring the base texture and fine texture separately, the optimal effect of each texture layer can be achieved. The base texture typically covers a large area and is relatively simple, so prioritizing transfer can provide a stable base for the fine texture. The fine texture is often more complex and requires a detailed overlay transfer on top of the base texture. Processing the two separately improves the transfer accuracy of the fine texture, ensuring a high-quality visual effect in the final product.

[0030] In some preferred embodiments, the base texture UV-curable coating is cured using a preset first curing time and a preset first curing energy, while the fine texture UV-curable coating is cured using a preset second curing time and a preset second curing energy, wherein the first curing time is longer than the second curing time, and the first curing energy is higher than the second curing energy. For example, the first curing time is 5 seconds, the first curing energy is 1000 mJ / cm², and the second curing time is 4 seconds, and the second curing energy is 500 mJ / cm². It should be noted that base textures are typically rougher or deeper, and therefore require longer curing times and higher curing energies to ensure that the UV-curable coating can fully cure and fill the depth of the texture. Fine textures are typically more delicate, have shallower texture depth, and require the expression of intricate patterns and minute details. Therefore, using shorter curing times and lower curing energies can avoid overcuring, ensuring that the coating does not flow excessively, thereby maintaining the clarity and accuracy of the fine texture. In addition, since base textures usually involve larger surface areas and deeper bumps, base texture UV-curing coatings require higher viscosity and stronger adhesion, and therefore require higher light curing energy and longer curing time to ensure that the coating can fully cure and form a solid base layer. Fine texture UV-curing coatings are coatings used for fine textures and need to have lower viscosity and better fluidity to accommodate fine texture features. Lower light curing energy and shorter curing time can prevent excessive flow of the coating during the curing process, ensure clear transfer of fine textures, and reduce excessive material accumulation.

[0031] In some further preferred embodiments, the basic texture includes a coarse grid texture, a wavy basic texture, and a diamond grid texture; defects of the coarse grid texture include texture breakage or loss and inconsistent line thickness; defects of the wavy basic texture include deviation in the starting position of the texture and uneven amplitude of the waves; defects of the diamond grid texture include changes in grid line spacing, grids not arranged according to the predetermined position, and grid line breakage or loss; when the diaphragm texture in the textured shell diaphragm image is found to have defects in the coarse grid texture, the wavy basic texture, or the diamond grid texture, the first light-curing time and the first light-curing energy are adjusted, and the type of diaphragm substrate for which the first light-curing time and the first light-curing energy are used after the adjustment is qualified is stored. For example, for defects such as texture breakage or loss and inconsistent line thickness in the coarse grid texture, the light-curing time is shortened and the light-curing energy is reduced, for example, the light-curing time is originally set to 5 seconds and the light-curing energy is originally set to 100 mJ / cm². After adjustment, the curing time was shortened to 3.5 seconds, and the curing energy was reduced to 80 mJ / cm². For defects such as deviations in the starting position of the wavy base texture or uneven wave amplitude, the curing time and energy were increased. For example, the original curing time was set to 4 seconds and the curing energy was adjusted to 90 mJ / cm². After adjustment, the curing time was increased to 4.5 seconds, and the curing energy was fine-tuned to 95 mJ / cm². For defects such as varying grid line spacing, misaligned grid lines, or broken or missing grid lines in the diamond grid texture, the curing time and energy were reduced to ensure an even distribution of curing energy across the entire grid area. For example, the original curing time was set to 6 seconds and the curing energy was adjusted to 110 mJ / cm², but the curing time was reduced to 4 seconds and the curing energy was adjusted to 85 mJ / cm². It should be noted that excessive energy can lead to overhardening of the edges of the lines, resulting in inconsistent line thickness. Reducing the energy can ensure a more uniform curing process and avoid this problem. For wavy textures, slightly increasing the curing time can help stabilize the wave shape, reduce deviations in the starting position, and allow the wave texture to form more evenly during curing. Increasing the energy can ensure that the wavy texture is fully formed during the curing process, especially when the amplitude of the waves varies greatly. Diamond grid textures require precise shape and position. Excessive curing time or excessive energy may cause the grid lines to expand or break. Reducing the curing time and energy can help maintain the accuracy and integrity of the grid lines. Ensuring that the curing energy is evenly distributed across the entire grid area can avoid variations in line spacing or misalignment caused by excessive local energy.

[0032] It’s important to note that different film substrate types may require different light-curing times and energy. By finding and storing the optimal light-curing parameters for a specific substrate during commissioning, you can ensure that these optimized parameters can be directly applied to future production runs of the same film type, avoiding the tedious process of re-commissioning and ensuring consistent results and stable quality every time you produce.

[0033] Example 2

[0034] See also Figure 1 , Figure 2 This embodiment provides a housing diaphragm production system based on visual inspection, including:

[0035] Controlling the host computer to execute the housing diaphragm production method based on visual inspection described in any of the above embodiments;

[0036] A roll-to-roll transfer machine, comprising a visual imaging module; the roll-to-roll transfer machine communicates with the control host and is configured to operate under the control of the control host;

[0037] The roll-to-roll printing machine communicates with the control host and is used for working under the control of the control host.

[0038] It should be noted that, in this embodiment, after detecting that the membrane output station of the roll-to-roll transfer machine outputs a shell membrane with the master mold texture transferred thereon, the visual imaging module arranged above the membrane output station of the roll-to-roll transfer machine is controlled to photograph the shell membrane to obtain an image of the shell membrane containing the texture, and the membrane texture defects in the image of the shell membrane containing the texture are analyzed. When it is obtained that the membrane texture in the image of the shell membrane containing the texture does not have defects, the shell membrane without texture defects is conveyed to the roll-to-roll printing station. After conveying the shell membrane without texture defects to the roll-to-roll printing station, the roll-to-roll printing machine is controlled to print bridging varnish, cover base color and bonding glue on the shell membrane without texture defects to obtain a qualified shell membrane, thereby improving the accuracy and efficiency of texture defect detection of the membrane substrate, reducing the detection cost of texture defects of the membrane substrate, and improving the production efficiency and quality of the shell membrane.

[0039] It should be pointed out that the above embodiments are only preferred specific implementation methods of the present invention, and the protection scope of the present invention is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. The protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for producing a shell diaphragm based on visual inspection, characterized in that: include: After detecting that a film output station of a roll-to-roll transfer machine outputs a shell film with a master mold texture transferred thereon, controlling a visual imaging module disposed above the film output station of the roll-to-roll transfer machine to photograph the shell film to obtain an image of the shell film with the texture; Analyzing the film texture defects in the textured shell film image, and when it is determined that the film texture in the textured shell film image does not have any defects, conveying the shell film without any texture defects to a roll-to-roll printing station; After the shell diaphragm without texture defects is obtained at the roll-to-roll printing station, the roll-to-roll printing machine is controlled to print bridging varnish, cover base color and bonding glue on the shell diaphragm without texture defects to obtain a qualified shell diaphragm; the master mold texture includes basic texture and fine texture. When a specific type of texture is transferred to the shell diaphragm through the roll-to-roll transfer machine, the basic texture in the master mold texture is first transferred to the shell diaphragm, and then the fine texture in the master mold texture is transferred to the shell diaphragm and superimposed with the basic texture; after detecting that the diaphragm output station of the roll-to-roll transfer machine outputs the shell diaphragm with the basic texture transferred, the visual imaging module arranged above the diaphragm output station of the roll-to-roll transfer machine is controlled to photograph the shell diaphragm to obtain an image of the shell diaphragm containing the basic texture; the basic texture defects of the diaphragm in the image of the shell diaphragm containing the basic texture are analyzed, and after obtaining the image of the shell diaphragm containing the basic texture When the basic texture of the diaphragm does not have defects, a roll-to-roll printing machine is used to print bridging varnish on the shell diaphragm without basic texture defects; after printing the bridging varnish on the shell diaphragm without basic texture defects, the roll-to-roll transfer machine is used to transfer the fine texture to the shell diaphragm and overlap it with the basic texture; after detecting that the diaphragm output station of the roll-to-roll transfer machine outputs the shell diaphragm with the transferred fine texture, the visual imaging module arranged above the diaphragm output station of the roll-to-roll transfer machine is controlled to photograph the shell diaphragm to obtain an image of the shell diaphragm with superimposed fine textures; the fine texture defects of the diaphragm in the image of the shell diaphragm with superimposed fine textures are analyzed, and when it is obtained that the fine texture of the diaphragm in the image of the shell diaphragm with superimposed fine textures does not have defects, the roll-to-roll printing machine is used to print bridging varnish, cover base color and bonding glue on the shell diaphragm without fine texture defects to obtain a qualified shell diaphragm; When the roll-to-roll printing machine prints the bridging varnish, the cover base color, and the bonding adhesive on the shell diaphragm without fine texture defects, the method includes: printing the bridging varnish on the shell diaphragm without fine texture defects so that the texture layer of the shell diaphragm is covered with a layer of bridging varnish; printing the cover base color on the shell diaphragm with the texture layer covered with the bridging varnish so that a non-transparent layer is formed on the bottom side of the shell diaphragm; printing the bonding adhesive on the shell diaphragm with the non-transparent layer formed on the bottom side to obtain a qualified shell diaphragm; Transferring the basic texture in the master mold texture to the shell diaphragm, including: controlling the feed roller of the roll-to-roll transfer machine to drive the substrate of the shell diaphragm to move to the bottom of the pressure roller of the roll-to-roll transfer machine and contact the basic texture master mold covered on the pressure roller of the roll-to-roll transfer machine; controlling the curing coating nozzle of the roll-to-roll transfer machine to spray the basic texture UV curing coating into the contact gap between the master mold and the diaphragm; photocuring the basic texture UV curing coating so that the basic texture of the basic texture master mold is transferred to the substrate of the shell diaphragm through the basic texture UV curing coating; transferring the fine texture in the master mold texture to the shell diaphragm and superimposing it with the basic texture, including: controlling the feed roller of the roll-to-roll transfer machine to drive the diaphragm substrate containing the basic texture to move The roll-to-roll transfer machine is placed under a pressure roller of the roll-to-roll transfer machine and contacts a fine-textured master mold covered on the pressure roller of the roll-to-roll transfer machine; a curing coating nozzle of the roll-to-roll transfer machine sprays a fine-textured UV curing coating into a contact gap between the master mold and the diaphragm; the fine-textured UV curing coating is photocured so that the fine texture of the fine-textured master mold is transferred to the shell diaphragm and superimposed on the basic texture; a preset first photocuring time and a first photocuring energy are used when photocuring the basic texture UV curing coating, and a preset second photocuring time and a second photocuring energy are used when photocuring the fine texture UV curing coating, wherein the first photocuring time is longer than the second photocuring time, and the first photocuring energy is higher than the second photocuring energy; The basic texture includes a coarse grid texture, a wavy basic texture, and a diamond grid texture; defects of the coarse grid texture include texture breakage or loss and inconsistent line thickness; defects of the wavy basic texture include texture starting position deviation and uneven wave amplitude; defects of the diamond grid texture include grid line spacing variation, grids not arranged according to a predetermined position, and grid line breakage or loss; when the diaphragm texture in the textured shell diaphragm image has defects of the coarse grid texture, the wavy basic texture, or the diamond grid texture, the first light curing time and the first light curing energy are adjusted, and the type of diaphragm substrate for which the first light curing time and the first light curing energy are used after the adjustment is qualified are stored; for defects of texture starting position deviation and uneven wave amplitude in the wavy basic texture, the light curing time and the light curing energy are increased; for defects of grid line spacing variation, grids not arranged according to a predetermined position, and grid line breakage or loss in the diamond grid texture, the light curing time and the light curing energy are reduced to ensure that the light curing energy is evenly distributed across the entire grid area; When printing the cover base color on the shell diaphragm with the texture layer covered with bridging varnish, print the cover base color 2-3 times; before printing the laminating glue, perform a light transmittance test on the shell diaphragm with the printed cover base color, and the shell diaphragm that passes the light transmittance test enters the laminating glue printing process, and the shell diaphragm that fails the light transmittance test is printed with the cover base color again.

2. The method for producing a housing diaphragm based on visual inspection according to claim 1, characterized in that: When the membrane texture in the textured shell membrane image is defective, the shell membrane with the texture defect is transported to a waste recycling station.

3. A housing diaphragm production system based on visual inspection, characterized in that: include: Controlling a host computer to run the housing diaphragm production method based on visual inspection according to any one of claims 1 to 2; Roll-to-roll transfer machine, including visual imaging module; The roll-to-roll transfer machine communicates with the control host and is used to operate under the control of the control host; The roll-to-roll printing machine communicates with the control host and is used for working under the control of the control host.

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