A machine vision-based breathable film micropore defect online detection device and method

Abstract

The application discloses a kind of based on machine vision's breathable film micropore defect on-line detection equipment and method, it is related to the field of breathable film defect detection.The present application realizes the synchronous on-line detection to the top surface and bottom surface of breathable film by the top surface detection head and visual recognition device of upper and lower cooperation, avoids the defect omission caused by one-sided detection;With the sliding mechanism and follow-up identification mechanism arranged at the top of support, the detection unit can move flexibly in multiple positions in horizontal and vertical directions, so as to cover the full width and multiple detection areas of breathable film, significantly improve the comprehensiveness and accuracy of detection, at the same time, the supporting mechanism is adjusted by electric push rod to drive multiple sets of swing pieces to controllably support and moderately extrude the breathable film, so that the film material maintains a stable posture in the detection area and highlights the micropore defect features, which is beneficial to machine vision imaging and identification judgment, and the overall structure realizes the online detection effect of stable guidance, adjustable detection position and various identification methods.

Description

Technical Field

[0001] This invention relates to the field of breathable membrane defect detection, and in particular to an online detection device and method for micropore defects in breathable membranes based on machine vision. Background Technology

[0002] Breathable membranes are widely used in medical protection, hygiene products, packaging materials and industrial filtration due to their good breathability, waterproofness and filtration performance. The performance of breathable membranes largely depends on the number, size and uniformity of their internal micropores. If defects such as micropore blockage, rupture, abnormal pore size or local collapse occur during the production process, it will directly affect the use effect and product quality of the breathable membrane. Therefore, timely and accurate online detection of micropore defects is of great significance in the continuous production process of breathable membranes.

[0003] Chinese Patent Publication No. CN220084721U relates to a thin film defect detection device, comprising three sets of defect detection components: an internal defect detection component, an upper surface defect detection component, and a lower surface defect detection component. Each set of defect detection components includes a light source component that provides a light source and a camera component that captures an image. The thin film is sequentially passed through the three sets of defect detection components. The light source component and camera component in the internal defect detection component are arranged on both sides of the thin film and face each other. The other two sets of defect detection components are arranged on both sides of the thin film, with their respective light source components and camera components arranged at an angle towards the center line of the thin film. This achieves automated detection of defects inside the thin film and on both sides of the surface, replacing manual judgment, effectively improving detection efficiency and detection effect, and demonstrating good practicality.

[0004] Existing methods for inspecting breathable membranes mainly rely on manual sampling or single-sided fixed visual inspection, which suffers from low inspection efficiency, high subjectivity, easy omissions, and difficulty in adapting to high-speed continuous production. At the same time, some equipment only inspects a single surface of the breathable membrane, failing to take into account the micropore state of the top and bottom surfaces. Furthermore, during membrane material operation, vibration, warping, or tension changes can lead to unstable imaging, affecting recognition accuracy. In addition, existing inspection devices have limited adjustment capabilities for inspection position and angle, making it difficult to achieve comprehensive inspection of multiple areas and positions, thus restricting the reliability and automation level of breathable membrane micropore defect detection. Summary of the Invention

[0005] Therefore, in order to overcome the above-mentioned shortcomings, the present invention provides an online detection device and method for micropore defects in breathable membranes based on machine vision.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an online detection device for micropore defects in breathable membranes based on machine vision, comprising a support bracket for support, bases installed at four ends of the top of the support bracket, guide rollers installed between two sets of bases at the left and right ends, an adjustment support mechanism installed at the upper end of the support bracket, a follow-up recognition mechanism provided at the top of the adjustment support mechanism, the adjustment support mechanism realizes the compression and adjustment of the breathable membrane passing over the top, and cooperates with the follow-up recognition mechanism to perform visual detection of the bottom surface of the breathable membrane, sliding mechanisms installed at the front and rear ends of the top of the support bracket, the top of the two sets of sliding mechanisms connected to a fixed frame, a top surface detection head for visual detection of the top surface of the breathable membrane installed at the upper end of the fixed frame, and the sliding mechanism realizes the left and right position adjustment of the fixed frame.

[0007] Preferably, the adjusting support mechanism includes an electric push rod for driving, a support seat hinged to the right end of the electric push rod and connected to the upper end of the bracket, a linkage member hinged to the push rod at the left end of the electric push rod, a sliding member on the back of the linkage member, a guide member penetrated by the sliding member, connecting rods at the upper and lower ends of the linkage member, an upper connecting rod connected to the upper connecting rod, a lower connecting rod connected to the lower connecting rod, three sets of upper connecting members hinged to the left, middle and right ends of the upper connecting rod, three sets of lower connecting members hinged to the left, middle and right ends of the lower connecting rod, eight sets of supports located at the front and rear positions of the upper end of the bracket, a rotating rod located inside the supports, a swing member connected to the outside of the rotating rod, and a base plate located at the bottom of the supports. The bottom ends of the two sets of base plates in the middle are connected to the follow-up identification mechanism, and the two sides of the guide member are connected to the two sets of supports at the front end of the middle section.

[0008] Preferably, the linkage is in the shape of an inverted Z, and a set of guide grooves are provided at both the upper and lower ends of the linkage, and a set of connecting rods are embedded at both the upper and lower ends of the guide grooves.

[0009] Preferably, the guide member has a strip groove in the middle, and a sliding member is movably embedded in the strip groove.

[0010] Preferably, four sets of the eight sets of supports are provided at the front and rear positions, with the inner sides of the two sets of supports at the front and middle positions connected to guide members, and two sets of rotating rods provided at the lower inner sides of the supports at the front and rear positions at the middle positions, while one set of rotating rods is provided at the lower inner sides of the supports at the front and rear positions at the left and right ends.

[0011] Preferably, the lower ends of the three sets of upper connecting parts (left, middle, and right) are hinged to the inner left and right rotating rods of the two middle sets of brackets, respectively, and the three sets of lower connecting parts (left, middle, and right) are hinged to the inner right and left rotating rods of the two middle sets of brackets, respectively.

[0012] Preferably, a first motor is installed at the front end of the follow-up recognition mechanism, and a tray for support and sliding is installed at the outer end of the top of the follow-up recognition mechanism. A visual recognition device is provided on the top of the tray.

[0013] Preferably, the follow-up identification mechanism includes a housing fixed to the substrate at the top, a first threaded rod disposed inside the housing and connected to the output shaft of a first motor, a first slider threaded to the outside of the first threaded rod, a first slide plate connected to the other end of the first slider, and a first guide rod disposed inside the housing and passing through the first slide plate. A groove is provided at the outer end of the top of the housing, and one end of the top of the first slide plate passes through the groove to connect to the tray.

[0014] Preferably, the sliding mechanism includes a housing at the top of the bracket, a second motor installed at the left end inside the housing, a second threaded rod connected to the output shaft of the second motor and connected to the housing on the right side, a second slider threaded to the outside of the second threaded rod, a second guide rod passing through one end of the second slider and located inside the housing, a second sliding plate connected to the other end of the second slider, and a lifting member located outside the housing. A guide groove is provided in the middle of the outer side of the housing, and the second sliding plate passes through the guide groove and connects to the lifting member. A fixing frame is connected to the top of the lifting member.

[0015] Preferably, the method steps are as follows:

[0016] S1 Breathable Membrane Introduction and Stable Conveying: The breathable membrane to be tested is introduced from the left end of the equipment, and passes through the upper and lower guide rollers set in the bases at both ends in sequence. The guide rollers limit and tension the breathable membrane, and guide the breathable membrane to be stably and continuously conveyed to the right end along the predetermined path.

[0017] S2 Inspection Posture Adjustment and Support Preparation: Start the adjustment support mechanism, drive the linkage through the electric push rod to generate displacement, so that multiple sets of swinging parts swing synchronously to lift and support the breathable membrane, and adjust the angle and force state of the breathable membrane in the inspection area as needed to keep it flat or moderately compressed.

[0018] S3 Top Surface Micropore Defect Detection: The second motor in the sliding mechanism is activated, driving the second threaded rod to rotate, causing the fixed frame to move the top surface detection head left and right along the width of the breathable membrane; during the continuous operation of the breathable membrane, the top surface detection head performs multi-position imaging acquisition on the top surface of the breathable membrane to realize online detection of top surface micropore defects;

[0019] S4 Bottom Surface Micropore Defect Follow-up Detection: The first motor in the follow-up recognition mechanism is started, driving the first threaded rod to rotate, causing the tray to move back and forth along the running direction of the breathable membrane. The visual recognition device moves synchronously with the tray to perform multi-position, follow-up imaging detection on the bottom surface of the breathable membrane. Multiple sets of follow-up recognition mechanisms can operate independently to achieve multi-area detection on the bottom surface.

[0020] S5 Inspection Completion and Membrane Output: After the top and bottom surfaces are inspected simultaneously, the breathable membrane is pulled out of the equipment via the right-end guide roller, realizing online detection of micropore defects in the breathable membrane during continuous production.

[0021] The beneficial effects of this invention are:

[0022] This invention achieves simultaneous online inspection of the top and bottom surfaces of a breathable membrane through a top-mounted, coordinated inspection head and a visual recognition device, avoiding the omission of defects caused by single-sided inspection. Combined with a sliding mechanism and a follow-up recognition mechanism on the top of the support, the inspection unit can move flexibly in multiple positions both horizontally and vertically, thus covering the full width of the breathable membrane and multiple inspection areas, significantly improving the comprehensiveness and accuracy of the inspection. Simultaneously, the adjustable support mechanism uses an electric push rod to drive multiple sets of swing members to provide controllable support and moderate compression of the breathable membrane, maintaining a stable posture of the membrane material in the inspection area and highlighting microporous defect characteristics, which is beneficial for machine vision imaging and recognition. The overall structure achieves stable guidance, adjustable inspection position, and diverse recognition methods for online inspection, suitable for continuous production scenarios, and effectively improving the efficiency and reliability of microporous defect detection in breathable membranes. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the adjustable support mechanism structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the linkage connection structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the installation of the follow-up identification mechanism of the present invention;

[0027] Figure 5 This is a schematic diagram of the follow-up recognition mechanism of the present invention;

[0028] Figure 6 This is a schematic diagram of the sliding mechanism structure of the present invention.

[0029] The components include: bracket-1, base-2, guide roller-3, adjusting support mechanism-4, follow-up identification mechanism-5, sliding mechanism-6, fixed frame-7, top surface detection head-8, electric push rod-41, support seat-42, linkage component-43, sliding component-44, guide component-45, connecting rod-46, upper connecting rod-47, lower connecting rod-48, upper connecting component-49, lower connecting component-410, support seat-411, rotating rod-412, swing component-413, base plate-414, first motor-5a, tray-5b, visual identification device-5c, outer shell-51, first threaded rod-52, first slider-53, first slide plate-54, first guide rod-55, housing-61, second motor-62, second threaded rod-63, second slider-64, second guide rod-65, second slide plate-66, and lifting component-67. Detailed Implementation

[0030] To further explain the technical solution of the present invention, a detailed description is provided below through specific embodiments.

[0031] Please see Figure 1 This invention provides an online detection device for micropore defects in breathable membranes based on machine vision. It includes a support frame 1, with bases 2 welded to the four ends of the top of the support frame 1. A set of guide rollers 3 are installed on the upper and lower sides of the inner sides of the bases 2 at both ends. The breathable membrane can pass through between the upper and lower guide rollers 3, providing stable guidance. An adjusting support mechanism 4 is installed at the upper end of the support frame 1. The adjusting support mechanism 4 can support the breathable membrane passing overhead and adjust its passing angle for efficient defect detection. A follow-up recognition mechanism 5 is installed inside the adjusting support mechanism 4, used for bottom surface recognition of the breathable membrane passing overhead. Sliding mechanisms 6 are installed at the front and rear ends of the top of the support frame 1. A fixed frame 7 is provided on the top of the sliding mechanism 6, moving left and right with the sliding mechanism 6. A top surface detection head 8 is installed at the upper end of the fixed frame 7, used for top surface detection of the passing breathable membrane.

[0032] Please see Figure 2 and Figure 3The adjusting support mechanism 4 includes an electric push rod 41 for transmission. The right end of the electric push rod 41 is hinged to the support base 42. The top of the support base 42 is locked inside the upper end of the bracket 1. The left push rod of the electric push rod 41 is hinged to the middle of the linkage member 43. The linkage member 43 is inverted Z-shaped. A sliding member 44 is fixed in the middle of the back of the linkage member 43. A guide member 45 passes through the middle of the sliding member 44. A strip groove is opened in the middle of the guide member 45, and the strip groove is movably embedded in the groove. The sliding member 44 and the linkage member 43 each have a set of guide grooves at their upper and lower ends. A set of connecting rods 46 is embedded in each of the guide grooves at both ends. The back of the upper connecting rod 46 is connected to the upper connecting rod 47, and the back of the lower connecting rod 46 is connected to the lower connecting rod 48. The upper connecting rod 47 is hinged to upper connecting parts 49 at its left, middle, and right ends, and the lower connecting rod 48 is hinged to lower connecting parts 410 at its left, middle, and right ends. The guide member 45 has eight sets of support seats 411 welded to both sides. The top of the seat 411 is locked to the upper inner end of the bracket 1. Four sets are provided at the front and rear positions. The inner sides of the two sets of seats 411 at the front center are connected to guide members 45, and two sets of rotating rods 412 are provided at the lower inner sides of the front and rear seats 411 at the center. A set of rotating rods 412 is provided at the lower inner sides of the front and rear seats 411 at both the left and right ends. The outer sides of the rotating rods 412 are connected to the swing members 413. The top of the swing members 413 is arc-shaped to facilitate the support of the breathable membrane. (Left, center, and right...) The lower ends of the upper connector 49 are hinged to the inner left and right rotating rods 412 of the two middle brackets 411. The three lower connectors 410 are hinged to the inner right and left rotating rods 412 of the two middle brackets 411. The bottom of the front and rear brackets 411 are fixed with base plates 414. The bottom ends of the two middle base plates 414 are connected to the follow-up identification mechanism 5.

[0033] Please see Figure 4 and Figure 5 The follow-up recognition mechanism 5 has a first motor 5a installed at the front end, and a tray 5b for support and sliding is installed at the outer end of the top of the follow-up recognition mechanism 5. A visual recognition device 5c for detecting the bottom surface of the breathable membrane is set on the top of the tray 5b.

[0034] The follow-up identification mechanism 5 includes a housing 51 whose top is fixed to the base plate 414. A groove is provided at the outer end of the top of the housing 51. A first threaded rod 52 is provided at one end of the housing 51 corresponding to the first motor 5a. The front end of the first threaded rod 52 is connected to the output shaft of the first motor 5a. The outer side of the first threaded rod 52 is threadedly connected to the first slider 53. A first slide plate 54 is connected to the right side of the first slider 53. A first guide rod 55 fixed to the inner side of the housing 51 passes through the middle of the first slide plate 54 for guidance. The top end of the first slide plate 54 passes through the groove and is connected to the tray 5b.

[0035] Please see Figure 6The sliding mechanism 6 includes a housing 61 fixed to the top of the bracket 1. A second motor 62 is provided at the left end of the housing 61. The output shaft of the second motor 62 is connected to a second threaded rod 63. The outer side of the second threaded rod 63 is threadedly connected to a second slider 64. The middle of the inner end of the second slider 64 is penetrated by a second guide rod 65. The left and right sides of the second guide rod 65 are fixed to the housing 61. A second sliding plate 66 is provided at the front end of the second slider 64. A guide groove is provided in the middle of the outer side of the housing 61. The second sliding plate 66 passes through the guide groove and is connected to a lifting member 67. The lifting member 67 is L-shaped, and the top of the lifting member 67 is connected to a fixing frame 7.

[0036] The aforementioned top surface detection head 8 and visual recognition device 5c are both existing conventional technologies. They are based on machine vision imaging principles to detect micropore defects in the breathable membrane. The top surface detection head 8 is installed above the breathable membrane and consists of an industrial camera, an optical lens, and a matching light source. During the operation of the breathable membrane, it images the top surface of the membrane material through controlled illumination, so that the micropores form stable grayscale or contrast features in the image. The abnormal state of the micropores is identified through image analysis. The visual recognition device 5c is set below the breathable membrane and also consists of an industrial camera, an imaging lens, and a detection light source. It illuminates the bottom surface of the breathable membrane and acquires images of the bottom surface micropore structure. It maintains stable imaging conditions in a follow-up state, thereby independently completing the detection and discrimination of the micropore state based on the imaging characteristics of the bottom surface micropores.

[0037] The specific implementation process is as follows:

[0038] When micropore defects need to be detected in the breathable membrane, it is first guided in through the two sets of guide rollers 3 on the left end, and then pulled out through the two sets of guide rollers 3 on the right end. The top surface detection head 8 can then be activated to detect the top surface of the breathable membrane, while the visual recognition device 5c below detects the bottom surface. If real-time multi-position detection is required, the sliding mechanisms 6 at the front and rear ends of the top of the bracket 1 are activated, starting the corresponding second motor 62 inside. The second motor 62 rotates the second threaded rod 63, causing the second slider 64 to move the second sliding plate 66, thus moving the lifting member 67 left and right. The connected fixed frame 7 can move the top surface detection head 8 to perform multi-position detection; while starting the first motor 5a can drive the internal mechanism of the follow-up recognition mechanism 5 to perform transmission. The first threaded rod 52 inside the follow-up recognition mechanism 5 rotates, which drives the first slider 53 to move the first slide plate 54 back and forth. During the movement of the first slide plate 54, it is guided by the first guide rod 55 to realize the back and forth displacement of the tray 5b. The visual recognition device 5c follows the movement and begins to perform bottom surface detection at the front and back positions. The follow-up recognition mechanism 5 is provided with four sets, each of which can be driven independently to perform multi-position recognition.

[0039] During the identification process, the breathable membrane can be supported and compressed to make its surface microporous defects easier to identify and avoid omissions. The electric push rod 41 is activated to start working. The electric push rod 41 pushes the linkage 43 to slide. The back of the linkage 43 moves left and right in the guide 45 through the sliding member 44. Then, the connecting rods 46 at the upper and lower ends of the linkage 43 can be pulled, so that the upper connecting rod 47 and the lower connecting rod 48 connected at the upper and lower positions move accordingly. During the movement of the upper connecting rod 47 and the lower connecting rod 48, the corresponding upper connecting member 49 and the lower connecting member 410 can rotate the corresponding rotating rod 412, so that the swing member 413 connected to the outside of the rotating rod 412 swings. Finally, the six sets of swing members 413 swing, which can lift up the breathable membrane passing above, support and compress it. The angle of the swing member 413 is determined by the displacement distance of the linkage 43, which is conducive to efficient detection.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An online detection device for micropore defects in breathable membranes based on machine vision, characterized in that: The device includes a support bracket with bases installed at four ends of the top. Guide rollers are installed between two sets of bases at the left and right ends. An adjustable support mechanism is installed at the upper end of the bracket. A follow-up recognition mechanism is provided at the top of the adjustable support mechanism. The adjustable support mechanism can squeeze and adjust the breathable membrane passing over it, and cooperate with the follow-up recognition mechanism to perform visual inspection of the bottom surface of the breathable membrane. Sliding mechanisms are installed at the front and rear ends of the top of the bracket. The top of the two sliding mechanisms is connected to a fixed frame. A top surface inspection head for visual inspection of the top surface of the breathable membrane is installed at the upper end of the fixed frame. The sliding mechanism can adjust the left and right position of the fixed frame. The adjustment support mechanism includes an electric push rod for driving, a support seat hinged to the right end of the electric push rod and connected to the upper end of the bracket, a linkage component hinged to the left end of the electric push rod for pushing out a rod, a sliding component on the back of the linkage component, a guide component penetrated by the sliding component, connecting rods at the upper and lower ends of the linkage component, an upper connecting rod connected to the upper connecting rod, a lower connecting rod connected to the lower connecting rod, three sets of upper connecting components hinged to the left, middle and right ends of the upper connecting rod, three sets of lower connecting components hinged to the left, middle and right ends of the lower connecting rod, eight sets of supports located at the front and rear positions of the upper end of the bracket, a rotating rod located inside the supports, a swing component connected to the outside of the rotating rod, and a base plate located at the bottom of the supports. The bottom ends of the two sets of base plates in the middle are connected to the follow-up identification mechanism, and the two sides of the guide component are connected to the two sets of supports at the front end of the middle. The eight sets of supports are provided with four sets at the front and rear positions. The two sets at the front middle position are connected to the guide members on the inner side, and two sets of rotating rods are provided at the lower inner side of the supports at the front and rear positions in the middle position. A set of rotating rods is provided at the lower inner side of the supports at the front and rear positions at the left and right ends. The lower ends of the three sets of upper connecting parts (left, middle, and right) are hinged to the inner left and right rotating rods of the two middle sets of brackets, respectively. The three sets of lower connecting parts (left, middle, and right) are hinged to the inner right and left rotating rods of the two middle sets of brackets, respectively.

2. The machine vision-based online detection apparatus for micropore defects of a breathable film according to claim 1, characterized in that: The linkage component is in the shape of an inverted Z. A set of guide grooves is provided at both the upper and lower ends of the linkage component, and a set of connecting rods is embedded at both the upper and lower ends of the guide grooves.

3. The online detection device for micropore defects in breathable membranes based on machine vision according to claim 2, characterized in that: The guide member has a strip groove in the middle, and a sliding member is movably embedded in the strip groove.

4. The online detection device for micropore defects in breathable membranes based on machine vision according to claim 1, characterized in that: The front end of the follow-up recognition mechanism is equipped with a first motor, and the top of the follow-up recognition mechanism is equipped with a tray for support and sliding near the outer end. A visual recognition device is provided on the top of the tray.

5. The online detection device for micropore defects in breathable membranes based on machine vision according to claim 4, characterized in that: The follow-up identification mechanism includes a housing fixed to the base plate at the top, a first threaded rod disposed inside the housing and connected to the output shaft of a first motor, a first slider threaded to the outside of the first threaded rod, a first slide plate connected to the other end of the first slider, and a first guide rod disposed inside the housing and passing through the first slide plate. A groove is provided at the outer end of the top of the housing, and one end of the top of the first slide plate passes through the groove to connect to the tray.

6. The online detection device for micropore defects in breathable membranes based on machine vision according to claim 1, characterized in that: The sliding mechanism includes a housing located at the top of the bracket, a second motor installed at the left end inside the housing, a second threaded rod connected to the output shaft of the second motor and connected to the housing on the right side, a second slider threaded to the outside of the second threaded rod, a second guide rod passing through one end of the second slider and located inside the housing, a second sliding plate connected to the other end of the second slider, and a lifting member located on the outside of the housing. A guide groove is provided in the middle of the outside of the housing, and the second sliding plate passes through the guide groove and connects to the lifting member. A fixing frame is connected to the top of the lifting member.

7. A method for online detection of micropore defects in a breathable membrane based on machine vision, the detection device according to any one of claims 1-6, characterized in that: The specific steps are as follows: S1 Breathable Membrane Introduction and Stable Conveying: The breathable membrane to be tested is introduced from the left end of the equipment, and passes through the upper and lower guide rollers set in the bases at both ends in sequence. The guide rollers limit and tension the breathable membrane, and guide the breathable membrane to be stably and continuously conveyed to the right end along the predetermined path. S2 Inspection Posture Adjustment and Support Preparation: Start the adjustment support mechanism, drive the linkage through the electric push rod to generate displacement, so that multiple sets of swinging parts swing synchronously to lift and support the breathable membrane, and adjust the angle and force state of the breathable membrane in the inspection area as needed to keep it flat or moderately compressed. S3 Top Surface Micropore Defect Detection: The second motor in the sliding mechanism is activated, driving the second threaded rod to rotate, causing the fixed frame to move the top surface detection head left and right along the width of the breathable membrane; during the continuous operation of the breathable membrane, the top surface detection head performs multi-position imaging acquisition on the top surface of the breathable membrane to realize online detection of top surface micropore defects; S4 Bottom Surface Micropore Defect Follow-up Detection: The first motor in the follow-up recognition mechanism is started, driving the first threaded rod to rotate, causing the tray to move back and forth along the running direction of the breathable membrane. The visual recognition device moves synchronously with the tray to perform multi-position, follow-up imaging detection on the bottom surface of the breathable membrane. Multiple sets of follow-up recognition mechanisms can operate independently to achieve multi-area detection on the bottom surface. S5 Inspection Completion and Membrane Output: After the top and bottom surfaces are inspected simultaneously, the breathable membrane is pulled out of the equipment via the right-end guide roller, realizing online detection of micropore defects in the breathable membrane during continuous production.

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