Shell diaphragm production method and system based on visual inspection

Abstract

The invention relates to the technical field of machine vision detection, digital industrial production processes of shells or structural parts of electric equipment, shell diaphragms and the like, and provides a shell diaphragm production method and system based on vision detection. The method comprises the following steps: acquiring a texture-containing shell membrane image, performing texture defect analysis on the texture-containing shell membrane image, conveying a shell membrane without a texture defect to a roll-to-roll printing station when the membrane texture in the texture-containing shell membrane image does not have a defect, and after the roll-to-roll printing station is conveyed to obtain the shell membrane without the texture defect, performing roll-to-roll printing on the shell membrane without the texture defect. And controlling the roll-to-roll printing machine to print bridging gloss oil, cover bottom color and bonding glue on the shell membrane without texture defects to obtain a qualified shell membrane, thereby improving the precision and efficiency of texture defect detection of the membrane base material, reducing the detection cost of the texture defects of the membrane base material, and improving the production efficiency and quality of the shell membrane.

Description

Technical Field

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

[0002] In the shell appearance design and production of electronic devices such as mobile phones and tablet computers and automotive interior parts, in order to meet consumers' demand for shell appearance, the shell is usually designed to be transparent and combined with a shell diaphragm with decorative effects to enhance the aesthetics of the equipment. In order to achieve the decorative effect of the shell diaphragm, in the prior art, the texture on the master mold is transferred to the diaphragm substrate by a roll-to-roll transfer machine, and then the texture on the diaphragm substrate is manually detected, and then a roll-to-roll printer is used to print bridging varnish on the diaphragm substrate, and then the substrate base color is printed, and the bonding glue is printed to obtain the shell diaphragm. When there are defects in the texture transferred to the diaphragm substrate, the texture has appearance defects, which are difficult to detect by manual inspection, are more 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 diaphragm substrate has technical problems such as low detection result accuracy, low efficiency and high cost. Summary of the invention

[0004] In view of the shortcomings of the above-mentioned prior art, the present invention provides a shell diaphragm production method and system based on visual inspection, so as 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: After detecting that the film output station of the roll-to-roll transfer machine outputs the shell film with the master mold texture transferred thereon, controlling the 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 containing the texture; Analyzing the film texture defects in the textured shell film image, and when it is found 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; 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.

[0006] In a second aspect, the present invention provides a housing membrane production system based on visual inspection, comprising: Controlling the host computer to run the above-mentioned housing diaphragm production method based on visual inspection; A roll-to-roll transfer machine, comprising a visual imaging module; the roll-to-roll transfer machine communicates with the control host and is used to work 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.

[0007] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a shell diaphragm production method and system based on visual inspection, after detecting that a shell diaphragm with a master mold texture is output from a diaphragm output station of a roll-to-roll transfer machine, a 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 a shell diaphragm image containing a 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 does not have defects, the shell diaphragm without texture defects is conveyed to a roll-to-roll printing station. After conveying the shell diaphragm 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 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

[0008] 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 improper limitation of the present invention. Some specific embodiments of the present invention will be described in detail in an exemplary 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: Figure 1 It is a schematic diagram of a process of a shell diaphragm production method based on visual inspection according to an embodiment of the present invention; Figure 2 It is a schematic diagram of the architecture of a shell diaphragm production system based on visual inspection according to an embodiment of the present invention. DETAILED DESCRIPTION

[0009] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only an embodiment of a part of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0010] Embodiment 1 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.

[0011] 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 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 containing the texture; S102, analyzing the film texture defects in the textured shell film image, and when it is found that the film texture in the textured shell film image has no defects, conveying the shell film without texture defects to a roll-to-roll printing station; 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 bonding glue on the shell membrane without texture defects to obtain a qualified shell membrane.

[0012] It should be noted that, in the present embodiment, after detecting that the membrane output station of the roll-to-roll transfer machine outputs a shell membrane with the texture of the master mold 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.

[0013] 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 surface of the diaphragm, 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 image processing algorithm 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 through automation, greatly reducing the possibility of defective products entering the next step of the process. In step S103, only when it is detected that the diaphragm texture is free of defects, the diaphragm will be transported to the roll-to-roll printing station for subsequent printing processes of bridging varnish, base color and bonding glue, and finally a qualified shell diaphragm is obtained, avoiding subsequent processing on defective diaphragms, thereby reducing the scrap rate and reducing material and production costs. Through the linkage with step S102, the entire production process is more compact and efficient, improving the overall production efficiency. Furthermore, when it is obtained that the diaphragm texture in the textured shell diaphragm image has defects, the shell diaphragm with texture defects is transported to the waste recovery station.

[0014] In some preferred embodiments, the master mold texture includes a basic texture and a fine texture. When a specific type of texture is transferred to the shell membrane by the roll-to-roll transfer machine, the basic texture in the master mold texture is first transferred to the shell membrane, and then the fine texture in the master mold texture is transferred to the shell membrane to be superimposed with the basic texture. It should be noted that by transferring the basic texture and the fine texture separately, the layering and visual depth of the shell membrane can be effectively increased. The basic texture usually provides a large-area overall pattern or a basic shape outline to form the main visual framework; the fine texture adds details such as shadows, lines or complex patterns on this basis, thereby enriching the overall visual effect. Further, the basic texture includes a thick line grid texture, a wavy basic texture, and a diamond grid texture. Among them, the thick line grid texture provides a simple and clear geometric structure, which can increase the overall structural sense as the base layer of the shell membrane. The wavy basic texture can give the shell surface a soft dynamic feeling. The diamond grid texture provides a solid visual foundation through its regular shape, which can well support the subsequent superposition of fine textures. Furthermore, the fine texture includes: a fine micro dot texture and a fine line shadow texture; the fine micro dot texture is superimposed on the coarse line grid texture, and the fine line shadow texture is superimposed on the wavy basic texture. Among them, superimposing the fine dot on the coarse line grid texture can increase the delicate feeling of the surface texture and provide a richer tactile experience. Adding fine line shadows on the wavy basic texture can enhance the three-dimensional sense and make the shell surface look more realistic and deep.

[0015] In some preferred embodiments, after detecting that the membrane output station of the roll-to-roll transfer machine outputs a shell membrane with a basic 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 basic texture; the basic texture defects of the membrane in the image of the shell membrane containing the basic texture are analyzed, and when it is obtained that the basic texture of the membrane in the image of the shell membrane containing the basic texture does not have defects, the shell membrane without basic texture defects is printed with bridging varnish by the roll-to-roll printing machine; after printing the bridging varnish on the shell membrane without basic texture defects, the roll-to-roll transfer machine is used to transfer the The fine texture is superimposed on the shell diaphragm and the basic texture; after detecting that the diaphragm output station of the roll-to-roll transfer machine outputs the shell diaphragm with the fine 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 the shell diaphragm image with the superimposed fine texture; the fine texture defects of the diaphragm in the shell diaphragm image with the superimposed fine texture are analyzed, and when the fine texture of the diaphragm in the shell diaphragm image with the superimposed fine texture is obtained, the shell diaphragm 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 diaphragm. It should be noted that the basic texture and the fine texture are detected separately 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 superimposition or amplification of these defects in subsequent processes, so that the final shell diaphragm has higher surface quality and consistency. After the basic texture is detected, 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 in the subsequent transfer of fine textures. 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. Further, 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 of the starting position of the texture and uneven amplitude of the wave; the defects of the diamond grid texture include changes in the spacing of the grid lines, the grid is not arranged according to the predetermined position, and the grid lines are broken or missing. It should be noted that inconsistent line thickness, uneven amplitude of the wave, or changes in the spacing of the grid lines will destroy the overall sense of structure and affect the visual beauty. If the coarse-line grid or diamond-shaped 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 results of subsequent processes.If the grid lines are not arranged in the predetermined position, or the starting position of the wavy texture is deviated, the texture will not be consistent with the expected design, resulting in the misalignment of the subsequent fine texture superposition, affecting the overall decorative effect. Further, the defects of the fine micro-dot texture include blurred texture, loss of dot midpoints, and misalignment when superimposed with the base texture; the defects of the fine line shadow texture include: incomplete lines in the shadow texture and misalignment when superimposed with the base texture. It should be noted that the fine texture is characterized by fine lines and complex textures. Therefore, once the problem of blur or unclearness occurs during the transfer process, the details will be weakened and the decorative effect will be lost. In addition, the complexity of the fine texture may cause the loss of details due to process problems during the transfer process. For example, the points in the dot texture may be partially missing, or the lines in the shadow texture may be incomplete, which directly affects the overall performance of the texture. In addition, since the fine texture is superimposed on the base texture, if the overlap of the fine texture and the base texture is inaccurate, it will cause a visual ghosting effect or texture misalignment. This defect especially affects the overall sense of refinement and destroys the final decorative effect.

[0016] In some preferred embodiments, when the roll-to-roll printer prints the bridging varnish, the cover base color and the bonding glue on the shell diaphragm without fine texture defects, the steps include: 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 glue on the shell diaphragm with the non-transparent layer formed on the bottom side to obtain a qualified shell diaphragm. Among them, when printing the cover base color on the shell diaphragm with the texture layer covered with the bridging varnish, the cover base color is printed 2-3 times. It should be noted that the bridging varnish is a transparent protective layer, which covers the texture layer, provides protection for the texture, and plays a bonding role with the subsequent process layer. The bridging varnish can effectively encapsulate the texture to prevent it from being worn, scratched or faded or deteriorated due to environmental influences during subsequent processing or use. The purpose of printing the cover base color on the texture layer is to form an opaque bottom layer. This layer has two main functions: one is to cover the reverse side of the texture layer, ensure that the bottom side of the shell membrane is opaque, and enhance the visual effect of the product; the other is to provide a color basis for the appearance of the final product, increase the visual layering and aesthetics. The printing of the laminating adhesive is to provide good adhesion for the shell membrane so that it can be firmly combined with other components. Printing bridging varnish as the first step provides a smooth and stable base for the subsequent cover base color and laminating adhesive, which is crucial to improving printing quality. The cover base color follows closely to ensure the perfect presentation of the visual effect. Finally, the addition of laminating adhesive ensures that the membrane can be closely combined with other components, which not only improves the overall production efficiency, but also ensures the high-quality output of the final product. In addition, multiple printing of the cover base color can effectively enhance the light-shielding property of the non-transparent layer, especially in some application scenarios that require complete opacity, such as mobile phone housings, automotive interiors, etc. One printing may not be able to completely cover the texture or base color of the lower layer. Through 2-3 printings, it can be ensured that the light-shielding property of the cover base color layer meets the requirements, so that the texture or color of the bottom layer will not be visible to affect 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 printed with the cover base color again. It should be noted that the main function of the cover base color is to ensure that an opaque layer is formed on the bottom side of the shell diaphragm. If the cover base color is not printed evenly or is insufficiently covered, it may cause light transmittance 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.

[0017] 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 in the master mold texture to the shell membrane and superimposing it with the basic texture includes: controlling the feed roller of the roll-to-roll transfer machine to drive the membrane substrate containing the basic texture to move to the bottom of the pressure roller of the roll-to-roll transfer machine to contact the fine texture master mold covered on the pressure roller of the roll-to-roll transfer machine; spraying the fine texture UV curing coating on the contact gap between the master mold and the membrane by the curing coating nozzle of the roll-to-roll transfer machine; and photocuring the fine texture UV curing coating so that the fine texture of the fine texture master mold is transferred to the shell membrane and superimposed with the basic texture. It should be noted that by transferring the basic texture and the fine texture separately, each layer of texture can achieve the best effect. The basic texture usually covers a large area and is relatively simple, and the priority transfer can provide a stable base surface for the fine texture. The fine texture is usually more complex and requires a fine superimposed transfer on the basic texture. Processing the two separately can improve the transfer accuracy of the fine texture and ensure the high-quality visual effect of the final product.

[0018] In some preferred embodiments, a preset first curing time and a first curing energy are used when curing the base texture UV curing coating, and a preset second curing time and a second curing energy are used when curing the fine texture UV curing coating, wherein the first curing time is longer than the second curing time, and the first curing energy is higher than the second curing energy. Exemplarily, the first curing time includes 5 seconds, the first curing energy includes 1000mJ / cm², the second curing time includes 4 seconds, and the second curing energy includes 500mJ / cm². It should be noted that the base texture is usually rough or deep, so a longer curing time and a higher curing energy are required to ensure that the UV curing coating can be fully cured and fill the depth of the texture. Fine textures are usually delicate, with shallow texture depth, and need to show fine patterns and tiny details. Therefore, using a shorter curing time and a lower curing energy can avoid over-curing, ensure that the coating does not flow too much, 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 photocuring energy and longer curing time to ensure that the coating can be fully cured and form a solid base layer. Fine texture UV-curing coatings are coatings for fine textures and need to have lower viscosity and better fluidity to accommodate fine texture features. Lower photocuring 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.

[0019] In some further preferred embodiments, the basic texture includes a thick grid texture, a wavy basic texture, and a diamond grid texture; the defects of the thick grid texture include texture breakage or loss and inconsistent line thickness; the defects of the wavy basic texture include deviation of 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, grids not arranged in a predetermined position, and grid line breakage or loss; when the diaphragm texture in the textured shell diaphragm image is obtained to have the defects of the thick grid texture, the wavy basic texture, or the diamond grid texture, the first light curing time and the first light curing energy are debugged, and the type of diaphragm substrate for which the first light curing time and the first light curing energy are used after the debugging is qualified is stored. Exemplarily, for the defects of texture breakage or loss and inconsistent line thickness in the thick grid texture, the light curing time is shortened and the light curing energy is reduced, for example, the light curing time originally set is 5 seconds and the light curing energy is 100 mJ / cm². After adjustment, the light curing time is shortened to 3.5 seconds, and the light curing energy is reduced to 80 mJ / cm²; for defects such as deviation of the starting position of the texture and uneven amplitude of the wave in the wavy base texture, the light curing time and light curing energy are increased. For example, the original light curing time is set to 4 seconds and the light curing energy is 90 mJ / cm². After adjustment, the light curing time is increased to 4.5 seconds, and the light curing energy is fine-tuned to 95 mJ / cm²; for defects such as changes in grid line spacing, grids not arranged in the predetermined position, and grid lines broken or missing in the diamond grid texture, the light curing time and light curing energy are reduced to ensure that the light curing energy is evenly distributed in the entire grid area. For example, the original light curing time is set to 6 seconds and the light curing energy is 110 mJ / cm². After adjustment, the light curing time is reduced to 4 seconds and the light curing energy is adjusted to 85 mJ / cm². It should be noted that excessive energy may cause excessive hardening of the line edge, resulting in inconsistent line thickness. By reducing the energy, the curing process can be made more uniform and the problem of inconsistent line thickness can be avoided. For wavy textures, slightly increasing the light cure time can help stabilize the wave shape and reduce the deviation of the starting position, so that the wave texture can be formed 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. Too long curing time or too high energy may cause the grid lines to expand or break. Reducing the light cure time and energy can help maintain the accuracy and integrity of the grid lines. Ensuring that the light cure energy is evenly distributed across the entire grid area can avoid line spacing changes or position misalignment caused by excessive local energy.

[0020] It should be noted that different film substrate types may have different requirements for light curing time and energy. By finding and storing the light curing parameters suitable for a specific substrate during the debugging process, it can be ensured that these optimized parameters can be directly called when the same type of film is produced in the future, avoiding the tedious process of re-debugging, thereby ensuring consistent results and stable quality every time.

[0021] Embodiment 2 See also Figure 1 , Figure 2 This embodiment provides a housing membrane production system based on visual inspection, including: Controlling the host to run the housing diaphragm production method based on visual inspection described in any of the above embodiments; A roll-to-roll transfer machine, comprising a visual imaging module; the roll-to-roll transfer machine communicates with the control host and is used to work 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.

[0022] It should be noted that, in the present embodiment, after detecting that the membrane output station of the roll-to-roll transfer machine outputs a shell membrane with the texture of the master mold 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.

[0023] It should be pointed out that the above embodiments are only preferred specific implementation modes of the present invention, and the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the 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 the film output station of the roll-to-roll transfer machine outputs the shell film with the master mold texture transferred thereon, controlling the 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 containing the texture; Analyzing the film texture defects in the textured shell film image, and when it is found 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; 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.

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 recovery station.

3. The method for producing a housing diaphragm based on visual inspection according to claim 1, characterized in that: The master mold texture includes a basic texture and a 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 to overlap with the basic texture.

4. The method for producing a housing diaphragm based on visual inspection according to claim 3, characterized in that: include: After detecting that the film output station of the roll-to-roll transfer machine outputs the shell film with the basic texture transferred thereon, controlling the 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 containing the basic texture; Analyze the basic texture defects of the membrane in the shell membrane image containing the basic texture, and when it is found that the basic texture of the membrane in the shell membrane image containing the basic texture does not have defects, print bridging varnish on the shell membrane without basic texture defects by a roll-to-roll printing machine; After printing the bridging varnish on the shell membrane without basic texture defects, the fine texture is transferred to the shell membrane by the roll-to-roll transfer machine to be superimposed on the basic texture; After detecting that the film output station of the roll-to-roll transfer machine outputs the shell film with the fine texture transferred, controlling the visual imaging module arranged 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 fine texture superimposed; The fine texture defects of the diaphragm in the image of the shell diaphragm with superimposed fine texture are analyzed. When it is obtained that the fine texture of the diaphragm in the image of the shell diaphragm with superimposed fine texture has no defects, the shell diaphragm 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 diaphragm.

5. The method for producing a housing diaphragm based on visual inspection according to claim 4, characterized in that: When the roll-to-roll printing machine prints the bridging varnish, the cover base color and the bonding glue on the shell membrane without fine texture defects, it includes: Printing a bridging varnish on the shell membrane without fine texture defects, so that the texture layer of the shell membrane is covered with a layer of bridging varnish; Printing a base color on the shell film with the texture layer covered with bridging varnish to form a non-transparent layer on the bottom side of the shell film; The bonding adhesive is printed on the shell film which forms a non-transparent layer on the bottom side to obtain a qualified shell film.

6. The method for producing a housing membrane based on visual inspection according to claim 5, characterized in that: When printing the cover base color on the shell membrane with the texture layer covered with the bridging varnish, the cover base color is printed 2-3 times.

7. The method for producing a housing membrane based on visual inspection according to claim 3, characterized in that: Transferring the basic texture in the master mold texture to the shell membrane, comprising: Controlling the feed roller of the roll-to-roll transfer machine to drive the substrate of the shell membrane 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; Control the curing coating nozzle of the roll-to-roll transfer machine to spray the basic texture UV curing coating to the contact gap between the master mold and the diaphragm; The basic texture UV curing coating is photocured so that the basic texture of the basic texture master mold is transferred to the substrate of the shell membrane through the basic texture UV curing coating.

8. The method for producing a housing membrane based on visual inspection according to claim 7, characterized in that: Transferring the fine texture in the master mold texture to the shell membrane and superimposing it on the basic texture includes: Controlling a feed roller of a roll-to-roll transfer machine to drive the film substrate containing the basic texture to move to the bottom of a pressure roller of the roll-to-roll transfer machine so as to contact a fine texture master mold coated on the pressure roller of the roll-to-roll transfer machine; The curing coating nozzle of the roll-to-roll transfer machine sprays fine texture UV curing coating into the contact gap between the master mold and the diaphragm; The fine texture UV curing coating is photocured so that the fine texture of the fine texture master mold is transferred to the shell membrane and overlapped with the basic texture.

9. The method for producing a housing diaphragm based on visual inspection according to claim 8, characterized in that: When the basic texture UV curing coating is photocured, a preset first photocuring time and a first photocuring energy are used, and when the fine texture UV curing coating is photocured, a preset second photocuring time and a second photocuring energy are used, wherein the first photocuring time is longer than the second photocuring time, and the first photocuring energy is higher than the second photocuring energy.

10. A housing membrane 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 as described in any one of claims 1 to 9; Roll-to-roll transfer machine, including visual imaging module; The roll-to-roll transfer machine communicates with the control host and is used to work 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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