A release film aoi detection and repair method and device

Abstract

The application discloses a kind of release film AOI detection repair method and device, belong to release film repair technical field.The device includes mesa, the adsorption assembly of mesa top surface one side, the sliding assembly of mesa one side and controller;Sliding assembly is driven screw and sliding rod synchronous rotation by motor through rotating shaft, first bevel gear and second bevel gear, drive adsorption assembly and move to alignment position along the direction of through slot;Adsorption assembly is driven by air cylinder connecting plate down, guide rod is guided along hollow tube inner wall, suction cup is attached to release film and realizes flexible adsorption, and the camera assembly on the bottom surface of connecting plate is followed scanning and completes AOI detection.This method is through "self-adapting alignment-classification flexible adsorption-AOI defect classification and coordinate positioning-detection repair linkage" process route, the precision transmission of sliding assembly, flexible attachment of adsorption assembly and automatic identification of camera assembly are synergized, solve the problem of "unable flexible alignment+adsorption damage film surface+defect difficult to locate+repair efficiency is low" in release film detection repair, realize the non-contact accurate positioning of release film, zero-damage flexible adsorption and the automatic identification and directional repair of defect, and detection repair efficiency and product yield are significantly improved.

Description

Technical Field

[0001] This invention belongs to the field of release film repair technology, specifically relating to a release film AOI detection and repair method and device based on precise alignment of sliding components, flexible bonding of adsorption components and automatic AOI recognition. Background Technology

[0002] Release film, also known as isolation film or anti-stick film, is a functional film material made of plastic film as the base material, coated with an organosilicon release agent, and cured and modified. Its surface has extremely low surface tension and excellent anti-stick, isolation, temperature resistance, and abrasion resistance properties. It can effectively reduce adhesion to adhesives, resins, and composite materials, and is widely used in many industrial fields such as new energy, electronic tapes, die-cutting, composite materials, food packaging, and medical and health care. During the production, die-cutting, and recycling of release film, minor scratches, damage, stains, and other defects can easily appear on the film surface, requiring repair after AOI inspection.

[0003] However, existing technologies still have many shortcomings in practical use: First, the equipment lacks a moving adjustment mechanism along the film surface, making it impossible to flexibly adjust according to the size and placement of the release film. The adsorption components are often misaligned with the area to be inspected on the release film, resulting in weak adsorption or missed detection. Second, the adsorption components mostly use rigid downward adsorption, making it difficult to control the downward speed and pressure in stages, which easily causes indentations and secondary damage on the release film surface. Third, AOI cameras are mostly fixed installations with a fixed field of view, which cannot flexibly cover the area to be inspected on the film surface according to the alignment position. Fourth, there is a lack of linkage between defect identification results and repair operations. After identification, the repair mechanism needs to be manually moved to the defect location, resulting in low detection and repair efficiency and poor consistency. Unidentified defects will remain on the release film surface, causing the product quality of the release film to be substandard.

[0004] To address the aforementioned issues, the applicant proposes a release film AOI inspection and repair method and device, which organically coordinates the precise alignment of the sliding component, the graded flexible bonding of the adsorption component, the AOI automatic identification of the camera component, and the repair linkage based on defect coordinates. Based on the mechanical structure shown in the original figure, the method layer process coordination of the controller achieves high-efficiency and high-precision release film inspection and repair. Summary of the Invention

[0005] To address the problems of existing release membrane inspection and repair devices, such as "inability to flexibly align – rigid adsorption damaging the membrane surface – difficulty in locating defects – disconnect between inspection and repair," the present invention aims to provide a release membrane AOI inspection and repair method and device that transforms the movable adjustment capability of the mechanical structure into a programmable and parameterizable process method, thereby achieving automatic coordination of alignment, adsorption, inspection, and repair.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A method for AOI inspection and repair of release film, implemented based on a release film AOI inspection and repair device, the device including a platform, an adsorption component disposed on one side of the top surface of the platform, a sliding component fixedly connected to one side of the platform, and a controller; the sliding component includes a fixed box, a rotating shaft rotatably connected between the inner walls of the two sides of the fixed box, a motor fixed to one side of the fixed box, two first bevel gears fixedly sleeved on the outer surface of the rotating shaft, two second bevel gears meshing with the first bevel gears, a lead screw and a slide rod respectively fixed to one side of the two second bevel gears, and a controller. Two through slots symmetrically formed on one side of the top surface of the table; the adsorption assembly includes a fixed frame, multiple hollow tubes arranged in a rectangular array fixed to the top of the fixed frame, a guide rod slidably connected to the inner wall of the hollow tubes, a cylinder fixed through the top of the fixed frame, a connecting plate fixed to the bottom of the guide rod, sliders fixed to both ends of the connecting plate and fitting with the sliding grooves at both ends of the fixed frame, a suction cup fixed to the bottom of the guide rod, two sliding plates symmetrically fixed to the lower part of the fixed frame, and a camera assembly fixed to the bottom surface of the connecting plate; the method includes the following steps: Adaptive alignment step: Based on the size of the release film to be processed and the position of the area to be detected, the controller drives the motor to make the rotating shaft drive the two second bevel gears to rotate synchronously via the two first bevel gears, thereby driving the lead screw and the slide rod to rotate synchronously, so that the slide plate threadedly connected to the lead screw and movably connected to the slide rod drives the adsorption assembly to move along the through groove direction to the alignment position aligned with the area to be detected; The graded flexible adsorption step is as follows: the controller drives the cylinder to move the connecting plate down the inner wall of the hollow tube in stages along the guide rod, the slider is guided along the slide groove to enhance stability, and the suction cup at the bottom of the guide rod moves down and is graded to fit the release film surface to achieve zero-damage flexible adsorption and fixation. AOI inspection steps: The controller controls the image acquisition sequence of the camera component as the adsorption component is aligned and moved downward, performs image scanning and defect identification on the release film surface in the adsorption and fixed state, and classifies the defects into damage, stains or minor scratches according to preset classification rules, and outputs the category and coordinates of each defect. Repair linkage step: The controller, based on the defect category and coordinates output by the AOI detection step, drives the sliding component again to move the adsorption component to each defect position in sequence according to the defect coordinates, and triggers the repair operation corresponding to the defect category.

[0007] Furthermore, in the adaptive alignment step, the controller drives the motor to rotate with a set number of pulses N according to the width W of the release film to be processed and the effective working width Wb of the adsorption component, based on the alignment displacement ΔX=(W−Wb) / 2. The number of pulses N is determined by the pitch p of the lead screw and the step angle θs of the stepper motor according to N=ΔX×360 / (p×θs). The actual rotation angle of the shaft is fed back in a closed loop through the encoder. When the deviation between the actual rotation angle and the target rotation angle exceeds a preset threshold, the controller corrects the number of pulses of the motor to achieve sub-millimeter precision alignment.

[0008] Furthermore, the graded flexible adsorption step includes the following three sub-steps performed sequentially: Light touch step: The cylinder pushes the connecting plate down to the point where the suction cup is at the pre-reserved gap d1 between the suction cup and the surface of the release film, with the first pressure P1 ≤ 0.1MPa and the gap d1 being 0.5~1.5mm; Step of applying the flat plate: The controller starts the suction cup negative pressure at the distance d1 from the surface of the release film, and increases the cylinder pressure to the second pressure P2 with the first slope, so that the suction cup gradually applies to the surface of the release film. The suction cup negative pressure feedback value is monitored in real time during the application process. Pressure holding step: When the suction cup negative pressure feedback value reaches the preset threshold P_vac, the cylinder pressure stabilizes at the third pressure P3, P3≤P2≤2P1, and maintains the adsorption state so that the camera component can complete AOI detection.

[0009] Furthermore, in the AOI detection step, the camera assembly moves with the connecting plate in a line scanning manner to acquire continuous image frames of the release film surface. The controller performs preprocessing, feature extraction, and classification on the image frames in sequence: preprocessing includes grayscale conversion and noise reduction; feature extraction includes geometric features, grayscale features, and texture features of the defect area; classification is based on the defect area S and aspect ratio R in the geometric features into damaged type (e.g., set as S>1mm² and R∈[1,3]), stain type (e.g., set as S∈[0.1,1]mm² and grayscale variance<threshold), and fine scratch type (e.g., set as R>3 and S<0.5mm²); for each defect after classification, its category and geometric center coordinates (x,y) are recorded and output.

[0010] Furthermore, the repair linkage step includes: the controller, according to the defect coordinate sequence output by the AOI detection step, sequentially executes the following for each coordinate: the adsorption component is moved to directly above the defect according to the coordinate; the camera component is controlled to perform a secondary fine inspection of the defect and confirm the defect category; the corresponding repair operation is triggered according to the confirmed category, wherein the damaged type triggers patch repair, the stain type triggers directional cleaning, and the minor scratch type triggers surface polishing repair; after each defect repair is completed, the adsorption component returns to the alignment position to continue scanning until all defects are processed.

[0011] Furthermore, the method also includes a sequential processing step: the placement frame in the middle of the top surface of the table is used to place multiple release films to be processed one by one, and the conveying grooves on both sides of the top surface of the table are used to output the release films that have completed inspection and repair in an orderly manner; the controller processes each release film sequentially in a cycle according to the process of "alignment - adsorption - AOI inspection - repair", and after processing one film, it is output through the conveying groove and the next film is automatically placed, so as to realize continuous sequential operation.

[0012] This invention also provides an AOI detection and repair device for release films, including a platform. An adsorption component is provided on one side of the top surface of the platform, and a sliding component is fixedly connected to one side of the platform. The sliding component includes a fixed box, one side of which is fixedly connected to the platform. A rotating shaft is rotatably connected between the inner walls of the two sides of the fixed box. A motor is fixedly connected to one side of the fixed box, and the output end of the motor extends into the fixed box and is fixedly connected to the rotating shaft. Two first bevel gears are fixedly sleeved on the outer surface of the rotating shaft, and two second bevel gears are meshed on the outer surfaces of the first bevel gears. A lead screw is fixedly connected to one side of one of the second bevel gears, and a sliding rod is fixedly connected to one side of the other second bevel gear. Two through slots are symmetrically formed on one side of the top surface of the platform, and the end of the lead screw rotates with one inner wall of one of the through slots. The connection is as follows: the end of the slide rod is fixedly connected to the inner wall of one side of another through groove; the adsorption assembly includes a fixed frame, the top of the fixed frame is fixedly connected to a plurality of hollow tubes arranged in a rectangular array, the inner wall of the hollow tubes is slidably connected to a guide rod, the top of the fixed frame is fixedly connected to a cylinder, the output end of the cylinder is fixedly connected to the bottom end of the guide rod to a connecting plate, the bottom end of each guide rod is fixedly connected to a suction cup, the lower part of the fixed frame is symmetrically fixedly connected to two sliding plates, one of the sliding plates is threadedly connected to the lead screw, the other sliding plate is movably connected to the slide rod, the bottom surface of the connecting plate is fixedly connected to a camera assembly; the device also includes a controller, the controller is electrically connected to the motor and the cylinder respectively, and is configured to perform the release film AOI detection and repair method as described in any one of claims 1 to 6.

[0013] Furthermore, a placement frame is fixedly connected to the center of the top surface of the table, and conveying grooves are provided on both sides of the top surface of the table. The placement frame is used to place the release film to be processed one by one, and the conveying grooves are used to output the release film that has completed inspection and repair in an orderly manner.

[0014] Furthermore, a control panel is fixedly connected to one end of the platform. The control panel is electrically connected to the controller and is used for human-computer interaction, parameter setting, and status display.

[0015] Furthermore, two sliders are fixedly connected to both ends of the connecting plate, and grooves for use with the sliders are opened at both ends of the fixing frame. The outer surface of the slider fits against the inner wall of the groove to enhance the stability of the connecting plate during the downward movement.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention transforms the double bevel gear transmission of the sliding component into an alignment execution unit that can be precisely driven by the controller according to the number of pulses. The controller calculates the alignment displacement ΔX=(W−Wb) / 2 based on the width W of the release film and the effective working width Wb of the adsorption component. Then, it calculates the number of pulses N based on the lead screw pitch p and the motor stepping angle θs and corrects it through encoder closed-loop feedback, achieving sub-millimeter level precision alignment. This fundamentally solves the problem of "misalignment between the adsorption component and the area to be detected". It can adaptively align release films of different sizes without the need to replace mechanical parts.

[0017] 2. This invention rewrites the rigid pressing of the cylinder into a three-stage flexible adsorption process of "light touch - flattening - pressure holding". The controller switches the cylinder pressure P1 / P2 / P3 according to the sub-steps and links the suction cup negative pressure feedback value P_vac, so that the suction cup gradually adheres to the surface of the release film, avoiding the indentation and secondary damage caused by rigid pressing on the film surface, and realizing "zero damage flexible adsorption fixation", which is especially suitable for release films with minor defects on the surface.

[0018] 3. This invention changes the fixed installation of the AOI camera assembly to a follow-up scanning structure that moves synchronously with the connecting plate. The camera assembly continuously acquires image frames during the downward movement and alignment of the adsorption assembly. The controller classifies the defects into three categories—damage, stains, and minor scratches—according to the area S and aspect ratio R according to the "preprocessing-feature extraction-classification" process, and outputs the geometric center coordinates (x, y) of each defect, thus realizing the accurate classification and positioning of defects.

[0019] 4. This invention establishes a closed-loop linkage mechanism of "detection-positioning-displacement-triggering repair" between the AOI inspection step and the repair operation. The controller moves the adsorption component to the top of each defect in sequence according to the defect coordinate sequence, and triggers the corresponding patch repair, directional cleaning or surface polishing repair according to the confirmed category. This overcomes the industry problem of "disconnection between detection and repair", significantly improves the efficiency and consistency of detection and repair, and significantly improves the product yield.

[0020] 5. This invention, through the cooperation of the placement frame and the conveying trough, can process multiple release films in a continuous cycle of "alignment - adsorption - AOI detection - repair". The controller uniformly schedules the alignment motor, cylinder, camera assembly and repair mechanism, realizing continuous sequential operation. It is suitable for batch release film inspection and repair production lines in the fields of electronic tape, die-cutting processing, new energy composite materials and other fields. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a front view of the overall structure of the present invention.

[0023] Figure 2 This is a schematic diagram of the sliding component structure of the present invention.

[0024] Figure 3 This is a schematic diagram of the adsorption component structure of the present invention.

[0025] In the diagram: 1. Tabletop; 2. Adsorption assembly; 3. Sliding assembly; 4. Placement frame; 5. Conveying channel; 6. Control panel; 20. Camera assembly; 21. Fixing frame; 22. Hollow tube; 23. Guide rod; 24. Cylinder; 25. Connecting plate; 26. Slider; 27. Slide; 28. Suction cup; 29. ​​Slide plate; 31. Fixing box; 32. Rotating shaft; 33. Motor; 34. First bevel gear; 35. Second bevel gear; 36. Lead screw; 37. Slide rod; 38. Through groove. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figure 1 , Figure 2 , Figure 3 As shown, this embodiment provides an AOI inspection and repair device for release films, including a platform 1, an adsorption component 2 disposed on one side of the top surface of the platform 1, a sliding component 3 fixedly connected to one side of the platform 1, a placement frame 4 disposed in the middle of the top surface of the platform 1, conveying channels 5 disposed on both sides of the top surface of the platform 1, a control panel 6 disposed at one end of the platform 1, and a controller (not shown in the figure). The placement frame 4 is used to place the release films to be processed one by one, the conveying channels 5 are used to output the release films that have completed inspection and repair in an orderly manner, and the control panel 6 is electrically connected to the controller for human-machine interaction, parameter setting, and status display.

[0028] like Figure 2 As shown, the sliding assembly 3 includes a fixed box 31, one side of which is fixedly connected to the platform 1. A rotating shaft 32 is rotatably connected between the inner walls of the two sides of the fixed box 31. A motor 33 is fixedly connected to one side of the fixed box 31. The motor 33 is preferably a stepper servo motor with a built-in encoder. The output end of the motor 33 extends into the fixed box 31 and is fixedly connected to the rotating shaft 32. Two first bevel gears 34 are fixedly sleeved on the outer surface of the rotating shaft 32. Two second bevel gears 35 are meshed on the outer surface of the first bevel gears 34. A lead screw 36 is fixedly connected to one side of one of the second bevel gears 35, and a slide rod 37 is fixedly connected to one side of the other second bevel gear 35. Two through slots 38 are symmetrically opened on one side of the top surface of the platform 1. The end of the lead screw 36 is rotatably connected to the inner wall of one side of one through slot 38, and the end of the slide rod 37 is fixedly connected to the inner wall of the other through slot 38. When the controller drives the motor 33 to rotate, the shaft 32 drives the two first bevel gears 34 to rotate synchronously, and then drives the lead screw 36 and the slide bar 37 to rotate simultaneously through the two second bevel gears 35. The adsorption assembly 2 moves smoothly along the through groove 38 through the two slide plates 29 that are threadedly connected to the lead screw 36 and movably connected to the slide bar 37.

[0029] like Figure 3As shown, the adsorption assembly 2 includes a fixed frame 21. Multiple hollow tubes 22 arranged in a rectangular array are fixedly connected to the top of the fixed frame 21. Guide rods 23 are slidably connected to the inner walls of the hollow tubes 22. A cylinder 24 is fixedly inserted through the top of the fixed frame 21. The output end of the cylinder 24 is fixedly connected to the bottom end of each guide rod 23 via a connecting plate 25. Two sliders 26 are fixedly connected to both ends of the connecting plate 25. Slide grooves 27 for use with the sliders 26 are provided at both ends of the fixed frame 21. The outer surface of the sliders 26 fits against the inner wall of the slide grooves 27, providing guidance and stability during the downward movement of the connecting plate 25. A suction cup 28 is fixedly connected to the bottom end of each guide rod 23. The suction cup 28 is connected to an external negative pressure source (not shown in the figure) and can perform a three-stage flexible adsorption process of "touch—flatten—pressure holding" under the control of the controller. Two sliding plates 29 are symmetrically fixedly connected to the lower part of the fixed frame 21. One sliding plate 29 is threadedly connected to the lead screw 36, and the other sliding plate 29 is movably connected to the slide rod 37, thereby converting the rotational motion of the sliding component 3 into the linear translation of the adsorption component 2. A camera component 20 is fixedly connected to the bottom surface of the connecting plate 25. The camera component 20 moves down and aligns synchronously with the connecting plate 25 to perform AOI automatic scanning and defect identification on the surface of the adsorbed and fixed release film.

[0030] The controller (not shown in the figure) can be a PLC, motion control card or industrial PC. The controller is electrically connected to the drive unit of motor 33, the solenoid valve of cylinder 24, the negative pressure valve of suction cup 28, the image acquisition card of camera assembly 20 and the control interface of external repair mechanism. The controller is uniformly scheduled according to the process route of "adaptive alignment - graded flexible adsorption - AOI detection - repair linkage" of the present invention.

[0031] The core innovation of this invention lies in the coordinated control of the above-mentioned device according to four steps: "adaptive alignment - graded flexible adsorption - AOI detection - repair linkage", wherein the specific implementation of each step is as follows.

[0032] Adaptive alignment steps: The operator inputs the width W of the release film to be processed through the control panel 6. The controller calculates the alignment displacement ΔX=(W−Wb) / 2 based on the effective working width Wb of the adsorption component 2, and then calculates the number of drive pulses N based on the pitch p of the lead screw 36 and the stepping angle θs of the motor 33 (stepper motor): N=ΔX×360 / (p×θs). The controller sends a pulse to the motor 33 according to N. The motor 33 drives the lead screw 36 and the slide bar 37 to rotate simultaneously via the rotating shaft 32, the first bevel gear 34, and the second bevel gear 35. The adsorption component 2 moves to the alignment position along the through groove 38 via the two sliding plates 29. During the movement, the encoder built into the motor 33 provides real-time feedback on the actual rotation angle of the rotating shaft 32. The controller compares the actual rotation angle with the target rotation angle. When the deviation exceeds a preset threshold (e.g., 0.05°), the number of pulses N is corrected to achieve sub-millimeter precision alignment. This step overcomes the shortcomings of traditional devices that cannot adaptively align according to the size of the release film, and can automatically align release films of different widths without changing mechanical parts.

[0033] The graded flexible adsorption process involves the following steps: After the adsorption component 2 moves to the alignment position, the controller drives the cylinder 24 in three sub-steps: "touch—flatten—hold pressure". In the "touch" sub-step, the cylinder 24 pushes the connecting plate 25 downwards with a first pressure P1 (e.g., set to P1 ≤ 0.1 MPa) until it stops at the pre-reserved gap d1 (e.g., set to d1 = 0.5~1.5 mm) between the suction cup 28 and the membrane surface, preventing the suction cup 28 from impacting the membrane surface with excessive initial force. In the "flatten" sub-step, the controller... The controller initiates negative pressure on suction cup 28 at a distance d1 from the film surface, and gradually increases the pressure of cylinder 24 to a second pressure P2 at a first inclination, causing suction cup 28 to gradually adhere to the release film surface. During the adhesion process, the negative pressure feedback value P_vac of suction cup 28 is monitored in real time. In the pressure holding step, when P_vac reaches a preset threshold, the pressure of cylinder 24 stabilizes at a third pressure P3 (P3≤P2≤2P1), and the adsorption state is maintained so that camera assembly 20 can complete AOI detection. This step, through graded pressure control and negative pressure feedback linkage, minimizes film surface indentations and secondary damage caused by traditional rigid pressing, achieving "zero-damage flexible adsorption".

[0034] AOI Inspection Steps: During the downward movement and alignment of the adsorption component 2, the camera assembly 20 moves with the connecting plate 25 in a line scanning manner, continuously acquiring image frames of the release film surface. The controller performs the following sequentially on each frame: preprocessing (grayscale conversion and Gaussian noise reduction), feature extraction (geometric features, grayscale features, and texture features of the defect area), and classification (e.g., classifying defects according to area S and aspect ratio R into broken defects (S>1mm² and R∈[1,3]), stain defects (S∈[0.1,1]mm² and grayscale variance < threshold), and minor scratch defects (R>3 and S<0.5mm²). For each classified defect, its category and geometric center coordinates (x,y) are recorded and output. This step transforms the traditional fixed AOI camera into a servo scanning structure and establishes a "classification + positioning" output on the controller side, providing a precise data foundation for subsequent repair linkage.

[0035] Repair linkage steps: The controller executes the following steps for each coordinate sequentially according to the defect coordinate sequence output by the AOI detection process: The adsorption component 2 is moved to directly above the defect at that coordinate (by re-activating the precise alignment of the sliding component 3); the camera component 20 performs a secondary fine inspection of the defect and confirms its category; and the corresponding repair operation is triggered based on the confirmed category: patch repair for broken defects, directional cleaning for stains, and surface polishing repair for minor scratches. After each defect repair is completed, the adsorption component 2 returns to its alignment position to continue scanning until all defects are processed. This step establishes a closed-loop linkage of "detection—positioning—shifting—triggering repair," directly converting the identification results into repair actions, completely changing the industry's current situation of "disconnected detection and repair."

[0036] Furthermore, for batch processing of multiple release films, the placement frame 4 in this embodiment is used to place multiple release films to be processed one by one, and the conveying trough 5 outputs the release films that have completed inspection and repair in an orderly manner. The controller processes each release film sequentially according to the process of "alignment - adsorption - AOI inspection - repair". After processing one film, it is output through the conveying trough 5 and the next film is automatically placed, realizing continuous sequential operation. It is suitable for batch release film inspection and repair production lines in the fields of electronic tape, die-cutting, and new energy composite materials.

[0037] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for AOI detection and repair of release film, characterized in that, Based on the release film AOI detection and repair device, the device includes a platform (1), an adsorption component (2) disposed on one side of the top surface of the platform (1), a sliding component (3) fixedly connected to one side of the platform (1), and a controller; the sliding component (3) includes a fixed box (31), a rotating shaft (32) rotatably connected between the inner walls of the two sides of the fixed box (31), a motor (33) fixed to one side of the fixed box (31), two first bevel gears (34) fixedly sleeved on the outer surface of the rotating shaft (32), two second bevel gears (35) meshing with the first bevel gears (34), a lead screw (36) and a slide rod (37) respectively fixed to one side of the two second bevel gears (35), and symmetrically opened on the top surface of the platform (1). Two through slots (38) on one side; the adsorption assembly (2) includes a fixed frame (21), a plurality of hollow tubes (22) fixed to the top of the fixed frame (21) in a rectangular array, a guide rod (23) slidably connected to the inner wall of the hollow tube (22), a cylinder (24) fixedly penetrating the top of the fixed frame (21), a connecting plate (25) fixed to the bottom of the guide rod (23), a slider (26) fixed to both ends of the connecting plate (25) and in contact with the sliding grooves (27) at both ends of the fixed frame (21), a suction cup (28) fixed to the bottom of the guide rod (23), two sliding plates (29) symmetrically fixed to the lower part of the fixed frame (21), and a camera assembly (20) fixed to the bottom surface of the connecting plate (25); the method Includes the following steps: Adaptive alignment step: Based on the size of the release film to be processed and the position of the area to be detected, the controller drives the motor (33) so that the rotating shaft (32) drives the two second bevel gears (35) to rotate synchronously through the two first bevel gears (34), thereby driving the lead screw (36) and the slide bar (37) to rotate synchronously, so that the slide plate (29) threadedly connected to the lead screw (36) and movably connected to the slide bar (37) drives the adsorption assembly (2) to move along the through groove (38) to the alignment position aligned with the area to be detected; The graded flexible adsorption step is as follows: the controller drives the cylinder (24) to make the connecting plate (25) move down in stages along the guide rod (23) on the inner wall of the hollow tube (22), the slider (26) is guided along the slide groove (27) to enhance stability, and the suction cup (28) at the bottom of the guide rod (23) moves down and is graded to fit the release film surface to achieve zero-damage flexible adsorption and fixation. AOI detection steps: The controller controls the image acquisition timing of the camera component (20) as the adsorption component (2) is aligned and moved downward, performs image scanning and defect identification on the release film surface in the adsorption and fixed state, and classifies the defects into damage, stains or minor scratches according to the preset classification rules, and outputs the category and coordinates of each defect. Repair linkage step: The controller drives the sliding component (3) again to move the adsorption component (2) to each defect position according to the defect coordinates based on the defect category and coordinates output by the AOI detection step, and triggers the repair operation corresponding to the defect category.

2. The release film AOI detection and repair method according to claim 1, characterized in that, In the adaptive alignment step, the controller drives the motor (33) to rotate with a set number of pulses N according to the width W of the release film to be processed and the effective working width Wb of the adsorption component, with an alignment displacement ΔX=(W−Wb) / 2. The number of pulses N is determined by the pitch p of the lead screw (36) and the step angle θs of the stepper motor according to N=ΔX×360 / (p×θs). The actual rotation angle of the rotating shaft (32) is fed back in a closed loop through the encoder. When the deviation between the actual rotation angle and the target rotation angle exceeds the preset threshold, the controller corrects the number of pulses of the motor (33) to achieve sub-millimeter precision alignment.

3. The release film AOI detection and repair method according to claim 1, characterized in that, The graded flexible adsorption step includes the following three sub-steps performed sequentially: Light touch step: The cylinder (24) pushes the connecting plate (25) down to the suction cup (28) at the reserved gap d1 between the suction cup (28) and the surface of the release film with the first pressure P1 ≤ 0.1MPa, and the gap d1 is 0.5~1.5mm; The flat-feeding step: The controller starts the suction cup negative pressure at the distance d1 from the release film surface of the suction cup (28), and increases the pressure of the cylinder (24) to the second pressure P2 with the first slope, so that the suction cup (28) gradually adheres to the release film surface. The suction cup negative pressure feedback value is monitored in real time during the adhesion process. Pressure holding step: When the suction cup negative pressure feedback value reaches the preset threshold P_vac, the cylinder (24) pressure stabilizes at the third pressure P3, P3≤P2≤2P1, and maintains the adsorption state so that the camera assembly (20) can complete AOI detection.

4. The release film AOI detection and repair method according to claim 1, characterized in that, In the AOI detection step, the camera component (20) moves with the connecting plate (25) in a line scanning manner to collect continuous image frames on the release film surface. The controller performs preprocessing, feature extraction and classification on the image frames in sequence: the preprocessing includes grayscale conversion and noise reduction. Feature extraction includes the geometric features, grayscale features, and texture features of the defect region; The defects are classified into three categories based on their geometric features: broken area S and aspect ratio R. For each defect after classification, its category and geometric center coordinates (x, y) are recorded and output.

5. The release film AOI detection and repair method according to claim 1, characterized in that, The repair linkage steps include: the controller executes the following steps for each coordinate according to the defect coordinate sequence output by the AOI detection steps: the adsorption component (2) is moved to the position directly above the defect according to the coordinate, the camera component (20) is controlled to perform a secondary fine inspection of the defect and confirm the defect category, and the corresponding repair operation is triggered according to the confirmed category, wherein the damaged type triggers patch repair, the stain type triggers directional cleaning, and the minor scratch type triggers surface polishing repair; after each defect repair is completed, the adsorption component (2) returns to the alignment position to continue scanning until all defects are processed.

6. The AOI detection and repair method for release film according to claim 1, characterized in that, The method further includes a sequential processing step: the placement frame (4) in the middle of the top surface of the table (1) is used to place multiple release films to be processed one by one, and the conveying grooves (5) on both sides of the top surface of the table (1) are used to output the release films that have completed the inspection and repair in an orderly manner; the controller processes each release film in a cyclical manner according to the process of "alignment - adsorption - AOI inspection - repair", and after processing one film, it is output through the conveying groove (5) and the next film is automatically placed, so as to realize continuous sequential operation.

7. A release film AOI inspection and repair device, comprising a platform (1), characterized in that, An adsorption component (2) is provided on one side of the top surface of the tabletop (1), and a sliding component (3) is fixedly connected to one side of the tabletop (1); the sliding component (3) includes a fixed box (31), one side of the fixed box (31) is fixedly connected to the tabletop (1), a rotating shaft (32) is rotatably connected between the inner walls of the two sides of the fixed box (31), a motor (33) is fixedly connected to one side of the fixed box (31), the output end of the motor (33) extends into the fixed box (31) and is fixedly connected to the rotating shaft (32), the rotating shaft (32) Two first bevel gears (34) are fixedly sleeved on the outer surface. Two second bevel gears (35) are meshed on the outer surface of the first bevel gears (34). A lead screw (36) is fixedly connected to one side of one of the second bevel gears (35), and a slide rod (37) is fixedly connected to one side of the other second bevel gear (35). Two through slots (38) are symmetrically opened on one side of the top surface of the platform (1). The end of the lead screw (36) is rotatably connected to the inner wall of one side of one of the through slots (38). The slide rod (37) The end is fixedly connected to the inner wall of one side of another through groove (38); the adsorption assembly (2) includes a fixed frame (21), the top of the fixed frame (21) is fixedly connected to a plurality of hollow tubes (22) arranged in a rectangular array, the inner wall of the hollow tubes (22) is slidably connected to a guide rod (23), the top of the fixed frame (21) is fixedly connected to a cylinder (24), the output end of the cylinder (24) is fixedly connected to the bottom end of the guide rod (23) with a connecting plate (25), and the bottom end of the guide rod (23) is fixedly connected to a suction cup. (28) Two sliding plates (29) are symmetrically fixedly connected to the lower part of the fixed frame (21), one of the sliding plates (29) is threadedly connected to the lead screw (36), and the other sliding plate (29) is movably connected to the slide rod (37). A camera assembly (20) is fixedly connected to the bottom surface of the connecting plate (25). The device also includes a controller, which is electrically connected to the motor (33) and the cylinder (24) respectively, and is configured to perform the release film AOI detection and repair method as described in any one of claims 1 to 6.

8. The release film AOI detection and repair device according to claim 7, characterized in that, A placement frame (4) is fixedly connected to the center of the top surface of the table (1). Conveying grooves (5) are provided on both sides of the top surface of the table (1). The placement frame (4) is used to place the release film to be processed one by one. The conveying grooves (5) are used to output the release film that has been tested and repaired in an orderly manner.

9. The release film AOI detection and repair device according to claim 7, characterized in that, A control panel (6) is fixedly connected to one end of the tabletop (1). The control panel (6) is electrically connected to the controller and is used for human-computer interaction, parameter setting and status display.

10. The release film AOI detection and repair device according to claim 7, characterized in that, Two sliders (26) are fixedly connected to both ends of the connecting plate (25). Both ends of the fixed frame (21) are provided with grooves (27) for use with the sliders (26). The outer surface of the slider (26) fits against the inner wall of the groove (27) to enhance the stability of the connecting plate (25) during the downward movement.

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