Electronic protective film surface defect detection device

Abstract

The invention relates to the technical field of protective film detection, in particular to an electronic protective film surface defect detection device which comprises a closed rack; a defect detection structure for detecting surface defects of the electronic protective film is assembled on the inner side; automatic feeding and discharging structures for automatically feeding and discharging electronic protective film samples to the defect detection structure are assembled at the two ends of the closed rack; and the defect detection structure comprises a detection conveying structure for automatically conveying the electronic protective film sample. The device has high-precision detection capability and multi-angle image detection, an image detection structure can carry out 0-degree, 45-degree and 90-degree multi-angle shooting on an electronic protective film, a first servo motor drives a worm and a worm gear to operate and drives a vertical adjusting rod to rotate, the angle of an image shooting camera is accurately adjusted, details on the surface of the protective film are captured in all directions, and the detection precision is improved. And any fine defect is not eliminated, so that the accuracy and comprehensiveness of defect identification are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of protective film detection, and in particular to a device for detecting surface defects of protective films for electronics. Background Art

[0002] At present, PET film is a packaging film with relatively comprehensive performance. PET film has good transparency and gloss; it also has good air tightness and fragrance retention; moisture resistance, excellent heat resistance, cold resistance, good chemical resistance and oil resistance, etc. The moisture permeability decreases at low temperatures. PET film has excellent mechanical properties, and its toughness is the best among all thermoplastics. The tensile strength and impact strength are much higher than those of ordinary films. PET film is suitable for secondary processing such as printing and paper bags. After searching (application number: CN202020468810.0), it can be learned that a PET film surface defect detection device includes a base, and a left support frame is fixedly connected to the top left side of the base. The PET film surface defect detection device starts to wind the film by rotating the right reel, and the film moves to the right along the left guide wheel and the bottom of the right guide wheel to pull the left reel to rotate. The left reel rotates to release the film, and at the same time the light source emits light, and the optical sensor starts to detect the film, and then transmits the detection information to the internal chip of the monitoring station for processing. When defects appear on the surface of the film, the optical sensor transmits the detection results to the internal chip of the monitoring station, and then the internal chip of the monitoring station controls the motor to stop rotating, and at the same time controls the alarm to emit sound through the buzzer and red light through the LED, so as to facilitate the work to be processed quickly, thereby solving the problem of manual detection. A Chinese patent discloses a device for detecting surface defects of protective films for electronics (authorization announcement number CN215525567U). The patent technology discloses a device for detecting surface defects of protective films for electronics, including a carrier, with brackets fixedly installed on the tops of the left and right sides of the carrier, and the tops of the two groups of brackets are rotatably connected with a reel and a rotating drum respectively, a motor is fixedly installed on the top of the front wall of the bracket on the right side of the carrier, and the transmission shaft of the motor is connected to the rotating drum in a transmission manner, a bracket is fixedly installed on the middle part of the upper surface of the carrier, an optical sensor is fixedly installed on the top of the bracket, and a light-blocking plate is fixedly installed on the inner side of the upper surface of the carrier near the bracket. The utility model is provided with a sleeve, a hexagonal rod and a pressure wheel, and the clamping and limiting effect of the pressure wheel can be used to prevent the film from being transported too much to the right due to the inertia of the reel rotation, causing the film to wrinkle, thereby preventing the staff from returning to rotate the rotating drum, and is suitable for wide promotion and use. This patented technology solves the problem that the device does not have the corresponding film positioning function. Whenever the motor is turned off, the left reel will inertialy turn right, causing the film to be transported too much to the right. The wrinkles in the film will cause an undetectable situation, and the staff will need to manually return the reel, resulting in unsatisfactory use results and poor applicability.

[0003] However, in the prior art, after the electronic film is cut, it is necessary to extract and detect or perform real-time detection on samples of multiple groups of protective films, and it is necessary to solve the problem that the electronic protective film can be automatically photographed and detected at different angles in the prior art.

[0004] Therefore, those skilled in the art have provided a surface defect detection device for an electronic protective film to solve the problems raised in the above background technology. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides:

[0006] A surface defect detection device for an electronic protective film, comprising:

[0007] A closed frame; a defect detection structure for detecting surface defects of the electronic protective film is assembled inside;

[0008] Automatic loading and unloading structures for automatically loading and unloading electronic protective film samples onto the defect detection structure are assembled at both ends of the closed frame;

[0009] The defect detection structure includes a detection conveying structure for automatically conveying the electronic protective film sample;

[0010] And a detection moving table structure for adsorbing and placing the electronic protective film sample. The detection moving table structure can cooperate with the detection conveying structure to perform vacuum adsorption positioning on the electronic protective film sample;

[0011] And an image detection structure for respectively photographing and detecting the electronic protective film at 0°, 45°, and 90°;

[0012] And a flatness detection structure for detecting the thick coating and flatness of the electronic protective film;

[0013] And a transmission adjustment structure for transmitting and outputting the image detection structure and the flatness detection structure.

[0014] Preferably: The detection conveying structure includes a conveying frame fixedly arranged inside the closed frame, and transmission rollers are rotatably installed on the inner sides of both ends of the conveying frame. One end of the transmission roller is connected to a brushless motor.

[0015] Preferably: A transmission belt is sleeved between the two transmission rollers, and sealing grooves are opened on both sides of the inner edge of the transmission belt. A sealing rail fixedly assembled inside the conveying frame is arranged inside the sealing groove;

[0016] A plurality of air extraction holes with a threaded shape inside are equidistantly opened in the middle of the transmission belt;

[0017] An air extraction frame is connected through between the sealing rails, and one end of the air extraction frame penetrates outside the conveying frame and is connected to a vacuum pump I located at the bottom of the conveying frame.

[0018] Preferably, the detection moving table structure includes a spiral pipe connected in a sealed and spiral manner inside the air extraction hole. The top end of the spiral pipe is provided with a moving table plate for placing the electronic protection film in a spiral and sealed manner, and a plurality of vacuum holes are formed in the moving table plate.

[0019] Preferably, the image detection structure includes an adjusting frame fixedly assembled on the rear side wall of the conveying frame. An adjusting screw rod is rotatably installed inside the adjusting frame, and one end of the adjusting screw rod rotatably penetrates outside the adjusting frame and is fixedly assembled with a first bevel gear.

[0020] An adjusting rod with a spiral drive sleeved outside the adjusting screw rod is movably arranged inside the adjusting frame, and an assembly shell is detachably assembled at the top end of the adjusting rod.

[0021] Preferably, an assembly rod is rotatably installed inside the assembly shell, and one end of the assembly rod rotatably penetrates outside the assembly shell and is fixedly provided with a vertical adjusting rod.

[0022] A worm gear is fixedly assembled on the outer wall of one end of the assembly rod located inside the assembly shell. The worm gear meshes with a worm, and a servo motor one is connected to the bottom of the worm.

[0023] Preferably, the vertical adjusting rod is slidably sleeved with a vertical screw frame, and a horizontal screw frame is fixedly assembled on the side wall of the top end of the vertical screw frame.

[0024] An inner screw rod is rotatably assembled inside the vertical screw frame. The bottom end of the inner screw rod rotatably penetrates inside the vertical screw frame and is connected with a servo motor two.

[0025] A screw body is rotatably installed inside the horizontal screw frame, and a servo motor three is connected to one end of the screw body.

[0026] Preferably, a screw moving block with a spiral drive sleeved outside the screw body is slidably sleeved outside the horizontal screw frame, and an image shooting camera for shooting the image of the electronic protection film is installed at the bottom end of the screw moving block.

[0027] Preferably, the flatness detection structure includes a moving and adjusting frame fixedly assembled on the front side wall of the conveying frame. A second screw rod is rotatably installed inside the moving and adjusting frame. One end of the second screw rod rotatably penetrates outside the moving and adjusting frame and is fixedly assembled with a second bevel gear.

[0028] A moving and adjusting rod with a spiral drive sleeved outside the second screw rod is movably arranged inside the moving and adjusting frame, and an assembly frame is detachably assembled at the top of the moving and adjusting rod.

[0029] Preferably, a first cylinder is assembled at the top of the moving and adjusting rod, and a detection frame is assembled at the output end of the first cylinder.

[0030] A plurality of flatness detection rods are movably arranged inside the detection frame, and detection balls are rotatably mounted on the bottom ends of the flatness detection rods;

[0031] A flatness sensor for pressure detection is installed on the top of the flatness detection rod, and a spring is installed between the flatness sensor and the flatness detection rod.

[0032] Technical effects and advantages of the present invention:

[0033] The present invention has high-precision detection capabilities and multi-angle image detection. The image detection structure can perform multi-angle shooting of the electronic protective film at 0°, 45°, and 90°. The servo motor drives the worm and worm gear to rotate, drives the vertical adjustment rod to rotate, and accurately adjusts the angle of the image shooting camera to capture the surface details of the protective film in all directions without missing any minor defects, effectively improving the accuracy and comprehensiveness of defect identification.

[0034] The present invention has high-precision flatness and thickness detection. The flatness detection structure drives the detection frame to rise and fall with the help of a cylinder, so that the detection ball contacts the protective film, and combines with the flatness sensor to achieve high-precision flatness detection. At the same time, the thickness can be detected to provide key two-dimensional detection data for product quality control, ensuring that the product meets strict quality standards.

[0035] The present invention has stable detection platform transportation. The detection platform structure and the detection transportation structure are closely matched. The exhaust hole is locked by a spiral pipe. The vacuum pump exhausts air to form vacuum adsorption. The brushless motor drives the transmission roller and the transmission belt to stably move the detection platform structure, ensuring that the electronic protective film has no displacement deviation during the detection process, providing a solid foundation for accurate detection, and ensuring the reliability of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a device for detecting surface defects of an electronic protective film provided by the present application;

[0037] Figure 2 This is a schematic diagram of the structure of a top view of a device for detecting surface defects of an electronic protective film provided by the present application;

[0038] Figure 3 This is a schematic diagram of the front structure of a device for detecting surface defects of an electronic protective film provided by the present application;

[0039] Figure 4 This is a schematic diagram of the disassembled structure of a device for detecting surface defects of an electronic protective film provided by the present application;

[0040] Figure 5 It is a structural schematic diagram of a defect detection structure in a surface defect detection device for an electronic protective film provided by the present application;

[0041] Figure 6 It is a schematic structural diagram of a detection conveying structure in a surface defect detection device for an electronic protective film provided by the present application;

[0042] Figure 7 It is a surface defect detection device for an electronic protective film provided by the present application Figure 6 Schematic structural diagram of part A in it;

[0043] Figure 8 It is a schematic structural diagram of a detection moving table structure in a surface defect detection device for an electronic protective film provided by the present application;

[0044] Figure 9 It is a schematic structural diagram of a moving table board in a surface defect detection device for an electronic protective film provided by the present application;

[0045] Figure 10 It is a schematic structural diagram of an image detection structure in a surface defect detection device for an electronic protective film provided by the present application;

[0046] Figure 11 It is a schematic structural diagram of an assembly shell in a surface defect detection device for an electronic protective film provided by the present application;

[0047] Figure 12 It is a schematic structural diagram of an inner screw rod in a surface defect detection device for an electronic protective film provided by the present application;

[0048] Figure 13 It is a schematic structural diagram of a flatness detection structure in a surface defect detection device for an electronic protective film provided by the present application;

[0049] Figure 14 It is a schematic structural diagram of a first cylinder in a surface defect detection device for an electronic protective film provided by the present application;

[0050] Figure 15 It is a surface defect detection device for an electronic protective film provided by the present application Figure 14 Schematic structural diagram of part B in it;

[0051] Figure 16 It is a schematic structural diagram of a transmission adjustment structure in a surface defect detection device for an electronic protective film provided by the present application;

[0052] Figure 17 It is a schematic structural diagram of an automatic loading and unloading structure in a surface defect detection device for an electronic protective film provided by the present application;

[0053] Figure 18 It is a schematic structural diagram of an arc-shaped sealing frame in a surface defect detection device for an electronic protective film provided by the present application.

[0054] In the figure:

[0055] 1. Closed frame;

[0056] 2. Defect detection structure;

[0057] 21. Detection and conveying structure; 2101. Conveying frame; 2102. Driving roller; 2103. Brushless motor; 2104. Air extraction frame; 2105. Vacuum pump 1; 2106. Transmission belt; 2107. Sealing groove; 2108. Sealing rail; 2109. Air extraction hole;

[0058] 22. Detection and moving table structure; 2201. Spiral connecting pipe; 2202. Moving table board; 2203. Vacuum hole;

[0059] 23. Image detection structure; 2301. Adjusting frame; 2302. Adjusting screw; 2303. Helical gear 1; 2304. Adjusting rod; 2305. Assembly shell; 2306. Worm gear; 2307. Worm; 2308. Servo motor 1; 2309. Vertical adjusting rod; 2310. Vertical screw frame; 2311. Inner screw; 2312. Servo motor 2; 2313. Horizontal screw frame; 2314. Screw moving block; 2315. Screw body; 2316. Servo motor 3; 2317. Image shooting camera;

[0060] 24. Flatness detection structure; 2401. Moving and adjusting frame; 2402. Screw 2; 2403. Helical gear 2; 2404. Moving and adjusting rod; 2405. Assembly frame; 2406. Cylinder 1; 2407. Detection frame; 2408. Flatness detection rod; 2409. Flatness sensor; 2410. Spring; 2411. Detection ball;

[0061] 25. Transmission and adjustment structure; 2501. Cylinder 2; 2502. No. 1 servo motor; 2503. Transmission rod; 2504. Helical gear 3; 2505. Helical gear 4; 2506. Inner square rod; 2507. Outer square rod;

[0062] 3. Automatic loading and unloading structure; 301. Fixed disk; 302. Inner disk frame body; 303. Adjusting ring; 304. Active rod; 305. Tooth ring body; 306. Gear body; 307. No. 2 servo motor; 308. Air supply pipe; 309. Cylinder 3; 310. Vacuum suction cup; 311. Telescopic pipe; 312. Vacuum pump 2; 313. Arc-shaped sealing frame;

[0063] 4. Load-bearing rod; 5. Support frame; 6. Controller; 7. Transparent glass; 8. Air inlet hole. Specific implementation method

[0064] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The examples of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

[0065] Embodiment 1. Please refer to Figures 1 to 4 , in this embodiment, a surface defect detection device for an electronic protective film is provided, including: a closed frame 1; a defect detection structure 2 assembled inside for detecting surface defects of the electronic protective film;

[0066] Observation windows are provided on both the front and back sides of the closed frame 1, and transparent glass 7 for supplying personnel to visually observe the surface defect detection process of the electronic protective film is hermetically installed along the inner edge of the observation window;

[0067] Automatic loading and unloading structures 3 for automatically loading and unloading electronic protective film samples onto the defect detection structure 2 are assembled at both ends of the closed frame 1;

[0068] Load-bearing rods 4 for supporting the automatic loading and unloading are fixedly arranged on the outer walls at both ends of the closed frame 1, and a support frame 5 is integrally fixed at the bottom end of the load-bearing rod 4;

[0069] A controller 6 is installed on the front side wall of the closed frame 1;

[0070] The defect detection structure 2 includes a detection conveying structure 21 for automatically conveying the electronic protective film sample;

[0071] An air inlet hole 8 is penetrated and opened at the middle position of the bottom end of the closed frame 1 where the detection conveying structure 21 is located;

[0072] And a detection transfer table structure 22 for adsorbing and placing the electronic protective film sample. The detection transfer table structure 22 can cooperate with the detection conveying structure 21 to perform vacuum adsorption positioning on the electronic protective film sample;

[0073] And an image detection structure 23 for respectively photographing and detecting the electronic protective film at 0°, 45°, and 90°;

[0074] The image detection structure 23 feeds the photographed images back to the controller 6. After the controller 6 screens the photographed electronic protective film image frames, the data of the electronic protective film with defects is transmitted to the automatic loading and unloading structure 3, and the electronic protective film with defects and the intact protective film are classified and conveyed for unloading through the automatic loading and unloading structure 3;

[0075] and a flatness detection structure 24 for thick coating and flatness detection of the electronic protection film;

[0076] The flatness detection structure 24 performs a uniform flatness detection on the passing electronic protective films, and feeds back the data of the electronic protective films with different flatness to the controller 6. The controller 6 automatically controls the automatic loading and unloading structure 3 to classify and transport the defective electronic protective films and intact protective films.

[0077] and a transmission adjustment structure 25 for transmitting outputs of the image detection structure 23 and the flatness detection structure 24;

[0078] The transmission adjustment structure 25 can actively control the positions of the image detection structure 23 and the flatness detection structure 24 inside the closed frame 1, which is beneficial for free adjustment at different positions and increases applicability.

[0079] For example 2, please refer to Figures 5 to 16 In this embodiment, a defect detection structure 2 in a device for detecting surface defects of a protective film for electronics is provided;

[0080] The detection conveying structure 21 includes a conveying frame 2101 fixedly arranged inside the closed frame 1, and driving rollers 2102 are rotatably installed inside both ends of the conveying frame 2101, and one end of the driving roller 2102 is connected to a brushless motor 2103.

[0081] The brushless motor 2103 is fixedly mounted on the inner wall of the conveying frame 2101 and is used to actively drive the driving roller 2102 to rotate.

[0082] A conveyor belt 2106 is sleeved between the two driving rollers 2102, and sealing grooves 2107 are provided on both sides of the inner edge of the conveyor belt 2106. A sealing rail 2108 fixedly assembled on the inner side of the conveyor frame 2101 is provided inside the sealing groove 2107;

[0083] The conveyor belt 2106 is provided with a plurality of air extraction holes 2109 with a threaded shape at equal intervals in the middle thereof;

[0084] An exhaust frame 2104 is connected through the sealing rails 2108 , and one end of the exhaust frame 2104 passes through the outside of the conveying frame 2101 and is connected to a vacuum pump 2105 located at the bottom of the conveying frame 2101 .

[0085] The vacuum pump 1 2105 evacuates the space between the two sealing rails 2108 through the vacuum frame 2104 .

[0086] The detection moving table structure 22 includes a spiral connecting pipe 2201 hermetically screwed and locked inside the air extraction hole 2109. A moving table plate 2202 for placing the electronic protection film is hermetically screwed and provided at the top end of the spiral connecting pipe 2201, and a plurality of vacuum holes 2203 are provided on the moving table plate 2202.

[0087] The shape of the moving table plate 2202 is not limited to a square, and can be set to a circular shape or the like according to the shape of the electronic protection film.

[0088] The image detection structure 23 includes an adjustment frame 2301 fixedly assembled on the rear side wall of the conveying frame 2101. An adjustment screw 2302 is rotatably installed inside the adjustment frame 2301, and one end of the adjustment screw 2302 rotatably penetrates outside the adjustment frame 2301 and is fixedly assembled with a first bevel gear 2303.

[0089] An adjustment rod 2304 is movably arranged inside the adjustment frame 2301 and is spirally sleeved outside the adjustment screw 2302. The top end of the adjustment rod 2304 is detachably assembled with an assembly shell 2305.

[0090] The assembly shell 2305 is detachably assembled on the adjustment frame 2301 through a locking bolt.

[0091] An assembly rod is rotatably installed inside the assembly shell 2305, and one end of the assembly rod rotatably penetrates outside the assembly shell 2305 and is fixedly provided with a vertical adjustment rod 2309.

[0092] One end of the assembly rod located inside the assembly shell 2305 has an outer wall fixedly assembled with a worm gear 2306. The worm gear 2306 meshes with a worm 2307, and the bottom of the worm 2307 is connected with a first servo motor 2308.

[0093] The first servo motor 2308 is fixedly arranged inside the assembly shell 2305 and is used to actively drive the worm 2307 to rotate.

[0094] The vertical adjustment rod 2309 is slidably sleeved with a vertical screw frame 2310, and a horizontal screw frame 2313 is fixedly assembled on the side wall of the top end of the vertical screw frame 2310.

[0095] An inner screw 2311 is rotatably assembled inside the vertical screw frame 2310. The bottom end of the inner screw 2311 rotatably penetrates inside the vertical screw frame 2310 and is connected with a second servo motor 2312.

[0096] A screw body 2315 is rotatably installed inside the horizontal screw frame 2313, and one end of the screw body 2315 is connected with a third servo motor 2316.

[0097] The servo motor two 2312 is fixedly assembled inside the vertical screw frame 2310 and is used to actively drive the inner screw 2311 to rotate;

[0098] The servo motor three 2316 is fixedly installed inside the horizontal screw frame 2313 and is used to actively drive the screw body 2315 to rotate.

[0099] A screw movement block 2314 which is spirally driven and arranged outside the screw body 2315 is slidably sleeved on the outside of the horizontal screw frame 2313, and an image capture camera 2317 for capturing images of the electronic protective film is installed at the bottom end of the screw movement block 2314.

[0100] The screw movement block 2314 can move on the horizontal screw frame 2313 as the screw body 2315 rotates, and the position of the image capture camera 2317 can be adjusted.

[0101] The flatness detection structure 24 includes a movement adjustment frame 2401 fixedly assembled on the front side wall of the conveying frame 2101, and a screw two 2402 is rotatably installed inside the movement adjustment frame 2401. One end of the screw two 2402 rotatably penetrates outside the movement adjustment frame 2401 and is fixedly assembled with a bevel gear two 2403;

[0102] A movement adjustment rod 2404 which is spirally driven and sleeved outside the screw two 2402 is movably arranged inside the movement adjustment frame 2401, and an assembly frame 2405 is detachably assembled at the top of the movement adjustment rod 2404.

[0103] The assembly frame 2405 is detachably installed at the top of the movement adjustment rod 2404 through bolts.

[0104] A cylinder one 2406 is assembled at the top of the movement adjustment rod 2404, and a detection frame 2407 is assembled at the output end of the cylinder one 2406;

[0105] A plurality of flatness detection rods 2408 are movably arranged inside the detection frame 2407, and detection balls 2411 are rotatably assembled at the bottom ends of the flatness detection rods 2408;

[0106] A flatness sensor 2409 for performing pressure detection is installed at the top of the flatness detection rod 2408, and a spring 2410 is installed between the flatness sensor 2409 and the flatness detection rod 2408.

[0107] The detection balls 2411 are used to contact the electronic protective film. By collecting the pressure exerted on the detection balls 2411 by the electronic protective film through the flatness sensor 2409, the flatness and the thickness uniformity data can be collected and detected.

[0108] The transmission adjustment structure 25 includes a second cylinder 2501 fixedly assembled on the inner side wall of the closed frame 1 and an outer rod 2507. The output end of the second cylinder 2501 is fixedly installed with a first servo motor 2502, and the output end of the first servo motor 2502 is fixedly assembled with a transmission rod 2503. An third helical gear 2504 meshing with the first helical gear 2303 and a fourth helical gear 2505 meshing with the second helical gear 2403 are fixedly assembled on the outer wall of the transmission rod 2503;

[0109] Only one group of the third helical gear 2504 or the fourth helical gear 2505 on the transmission rod 2503 can mesh with the first helical gear 2303 or the second helical gear 2403;

[0110] One end of the transmission rod 2503 away from the first servo motor 2502 is fixedly assembled with an inner rod 2506 movably arranged inside the outer rod 2507.

[0111] Example 3, please refer to Figures 17 to 18 In this example, an automatic loading and unloading structure 3 in an electronic protective film surface defect detection device is provided;

[0112] The automatic loading and unloading structure 3 includes a fixed disk 301 fixedly assembled on the top of the closed frame 1. An inner disk frame 302 fixedly assembled at the top of the load-bearing rod 4 is rotatably assembled at the bottom of the fixed disk 301, and an adjusting ring 303 is rotatably installed inside the bottom of the fixed disk 301;

[0113] A driving rod 304 rotatably arranged at the center of the fixed disk 301 is fixedly installed at the center of the adjusting ring 303;

[0114] The bottom of the adjusting ring 303 is detachably assembled with third cylinders 309 at equal intervals in a ring shape. The bottom end of the third cylinder 309 is detachably installed with a vacuum chuck 310. The vacuum chuck 310 is hermetically connected with a telescopic pipe 311, and one end of the telescopic pipe 311 away from the vacuum chuck 310 is connected with an air supply pipe 308 fixedly installed inside the driving rod 304;

[0115] The top end of the air supply pipe 308 is connected with a second vacuum pump 312. A toothed ring body 305 is fixedly installed on the outer wall of the driving rod 304. The toothed ring body 305 meshes with a gear body 306, and the gear body 306 is connected with a second servo motor 307;

[0116] The second servo motor 307 is fixedly installed on the surface of the fixed disk 301, and the second servo motor 307 is used to actively drive the gear body 306 to rotate;

[0117] Four arc-shaped sealing frames 313 are also fixedly assembled at equal intervals in a ring shape at the bottom of the adjusting ring 303.

[0118] When the arc-shaped sealing frame 313 moves along with the adjusting ring 303, it can be attached to the closed machine frame 1 to seal the internal space.

[0119] According to the above embodiments, the working principle of the present invention is as follows:

[0120] The defect detection structure 2 cooperates with the automatic loading and unloading structure 3 to automatically place the electronic protective film on the detection moving table structure 22 from above. Through the movement of the detection conveying structure 21, the image detection structure 23 can take pictures of the electronic protective film at angles of 0°, 45°, and 90°.

[0121] Then, the flatness detection structure 24 performs flatness and thickness detection processing on the electronic protective film.

[0122] The detected electronic protective film is then classified and unloaded through another automatic loading and unloading structure 3.

[0123] When the automatic loading and unloading structure 3 automatically loads the electronic protective film, the vacuum chuck 310 connected to the vacuum pump two 312 adsorbs and positions the electronic protective film. The second servo motor 307 is started, and the second servo motor 307 drives the gear body 306 to rotate. The gear body 306 rotates and meshes with the toothed ring body 305, causing the toothed ring body 305 to drive the driving rod 304 to rotate. Then, the driving rod 304 drives the adjusting ring 303 to rotate, so that the vacuum chuck 310 moves along with the cylinder three 309, and the arc-shaped sealing frame 313 also moves along with the adjusting ring 303, and the adsorbed electronic protective film can be moved to the detection moving table structure 22.

[0124] The detection moving table structure 22 can be spirally locked on the air extraction hole 2109 through the spiral connecting pipe 2201. Cooperating with the vacuum pump one 2105 of the detection conveying structure 21, vacuum pumping is performed between the two sealing rails 2108, so that the air on the moving table plate 2202 is pumped in through the vacuum holes 2203, and the electronic protective film placed on the moving table plate 2202 is adsorbed and positioned, thus completing the stable positioning of the electronic protective film on the moving table plate 2202.

[0125] When the electronic protective film moves through the detection conveying structure 21, the brushless motor 2103 is started, the brushless motor 2103 drives the driving roller 2102 to rotate, and the driving roller 2102 drives the conveyor belt 2106 to move inside the conveying frame 2101, moving the detection moving table structure 22 assembled thereon.

[0126] When the image detection structure 23 performs angle detection on the electronic protective film;

[0127] After starting the rotation of the first servo motor 2308, the rotation of the first servo motor 2308 drives the worm 2307 to rotate. The rotation of the worm 2307 meshes with the worm gear 2306 to rotate, causing the worm gear 2306 to drive the vertical adjustment rod 2309 fixed to the assembly rod to rotate, so that the vertical adjustment rod 2309 drives the image capture camera 2317 provided thereon to perform angle shooting at 0°, 45°, and 90°;

[0128] When adjusting the position of the image capture camera 2317, after starting the rotation of the third servo motor 2316, the third servo motor 2316 drives the screw body 2315 to rotate, so that the screw body 2315 performs screw drive on the screw moving block 2314. The screw moving block 2314 moves along the screw body 2315 outside the horizontal screw frame 2313, and the position of the image capture camera 2317 can be moved, and the position of the image capture camera 2317 can be adjusted on the detection and conveying structure 21;

[0129] When adjusting the height of the image capture camera 2317, after starting the second servo motor 2312, the second servo motor 2312 drives the inner screw 2311 to rotate after starting. The height of the vertical screw frame 2310 is adjusted through the inner screw 2311, and the height adjustment process of the assembled image capture camera 2317 can be performed;

[0130] When the electronic protective film passes through the flatness detection structure 24 for flatness detection, after starting the first cylinder 2406, the output end of the first cylinder 2406 drives the detection frame 2407 to descend, so that the flatness detection rod 2408 at the bottom of the detection frame 2407 descends, and the detection ball 2411 contacts the surface of the electronic protective film. When the detection ball 2411 touches the surface of the electronic protective film, the flatness sensor 2409 can perform flatness detection on the electronic protective film;

[0131] When adjusting the positions of the image detection structure 23 or the flatness detection structure 24 inside the closed frame 1 through the transmission adjustment structure 25 according to the position of the detection moving table structure 22;

[0132] When moving the position of the image detection structure 23 according to the movement of the transmission rod 2503 driven by the second cylinder 2501, the helical gear four 2505 on the transmission rod 2503 contacts the helical gear one 2303 and meshes with each other. When adjusting the position of the flatness detection structure 24 inside the closed frame 1, the helical gear three 2504 on the transmission rod 2503 is moved to contact the helical gear two 2403;

[0133] Restart the first servo motor 2502 to drive the third helical gear 2504 and the fourth helical gear 2505 on the transmission rod 2503 to rotate. Then, through the third helical gear 2504 or the fourth helical gear 2505, the second helical gear 2403 or the first helical gear 2303 that meshes therewith can be rotated, and then the adjusting screw 2302 of the image detection structure 23 can be rotated. Through the adjusting screw 2302, screw drive is performed on the adjusting rod 2304, so that the adjusting rod 2304 moves along the adjusting screw 2302 inside the adjusting frame 2301, and the position of the image shooting camera 2317 of the image detection structure 23 can be moved.

[0134] When the second helical gear 2403 is driven to rotate by the engagement of the third helical gear 2504, the second helical gear 2403 drives the second screw 2402 to rotate, so that the second screw 2402 drives the moving and adjusting rod 2404 to move. Then, the moving and adjusting rod 2404 spirally moves along the second screw 2402 inside the moving and adjusting frame 2401, and the position of the detection frame 2407 on the moving and adjusting rod 2404 can be moved, thus completing the position adjustment process.

[0135] Another automatic loading and unloading structure 3 can classify and unload the electronic protective film after being detected by the defect detection structure 2 according to the above working mode.

[0136] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. An electronic protective film surface defect detection device, characterized in that Comprising: A closed frame (1); a defect detection structure (2) for detecting surface defects of an electronic protective film is assembled inside; Automatic loading and unloading structures (3) for automatically loading and unloading an electronic protective film sample onto the defect detection structure (2) are assembled at both ends of the closed frame (1); The defect detection structure (2) includes a detection conveying structure (21) for automatically conveying an electronic protective film sample; And a detection transfer table structure (22) for adsorbing and placing an electronic protective film sample. The detection transfer table structure (22) can perform vacuum adsorption positioning on the electronic protective film sample in cooperation with the detection conveying structure (21); And an image detection structure (23) for respectively photographing and detecting the electronic protective film at 0°, 45°, and 90° views; And a flatness detection structure (24) for thick coating and flatness detection of the electronic protective film; And a transmission adjustment structure (25) for transmitting and outputting the image detection structure (23) and the flatness detection structure (24).

2. The surface defect detection device for an electronic protective film according to claim 1, wherein, The detection conveying structure (21) includes a conveying frame (2101) fixedly arranged inside the closed frame (1), and driving rollers (2102) are rotatably installed on the inner sides of both ends of the conveying frame (2101). One end of the driving roller (2102) is connected to a brushless motor (2103).

3. An electronic protective film surface defect detection device according to claim 2, characterized in that, A transmission belt (2106) is sleeved between the two driving rollers (2102), and sealing grooves (2107) are formed on both sides of the inner edge of the transmission belt (2106). A sealing rail (2108) fixedly assembled inside the conveying frame (2101) is arranged inside the sealing groove (2107); A plurality of air extraction holes (2109) with a threaded shape inside are equidistantly arranged in the middle of the transmission belt (2106); An air extraction frame (2104) is connected through between the sealing rails (2108), and one end of the air extraction frame (2104) penetrates outside the conveying frame (2101) and is connected to a vacuum pump one (2105) located at the bottom of the conveying frame (2101).

4. An electronic protective film surface defect detection device according to claim 1, characterized in that, The detection transfer table structure (22) includes a spiral connecting pipe (2201) hermetically and spirally locked and assembled inside the air extraction hole (2109). A transfer table plate (2202) for placing an electronic protective film is spirally and hermetically arranged at the top of the spiral connecting pipe (2201), and a plurality of vacuum holes (2203) are formed on the transfer table plate (2202).

5. An electronic protective film surface defect detection device according to claim 2, characterized in that, The image detection structure (23) includes an adjustment frame (2301) fixedly assembled on the rear side wall of the conveying frame (2101). An adjustment screw rod (2302) is rotatably installed inside the adjustment frame (2301), and one end of the adjustment screw rod (2302) rotatably penetrates outside the adjustment frame (2301) and is fixedly assembled with a bevel gear one (2303); An adjustment rod (2304) spirally sleeved on the adjustment screw rod (2302) is movably arranged inside the adjustment frame (2301), and an assembly shell (2305) is detachably assembled at the top of the adjustment rod (2304).

6. An electronic protective film surface defect detection device according to claim 5, characterized in that, An assembly rod is rotatably installed inside the assembly shell (2305), and one end of the assembly rod rotatably penetrates outside the assembly shell (2305) and is fixedly provided with a vertical adjustment rod (2309). One end of the outer wall of the assembly rod located inside the assembly shell (2305) is fixedly assembled with a worm gear (2306), the worm gear (2306) is engaged with a worm (2307), and the bottom of the worm (2307) is connected with a servo motor one (2308).

7. An electronic protective film surface defect detection device according to claim 6, characterized in that, The vertical adjustment rod (2309) is slidably sleeved with a vertical screw frame (2310), and the top side wall of the vertical screw frame (2310) is fixedly assembled with a horizontal screw frame (2313). An inner screw rod (2311) is rotatably assembled inside the vertical screw frame (2310), the bottom end of the inner screw rod (2311) rotatably penetrates inside the vertical screw frame (2310), and is connected with a servo motor two (2312). A screw rod body (2315) is rotatably installed inside the horizontal screw frame (2313), and one end of the screw rod body (2315) is connected with a servo motor three (2316).

8. An electronic protective film surface defect detection device according to claim 7, characterized in that, A screw displacement block (2314) which is helically driven and sleeved outside the screw rod body (2315) is slidably sleeved outside the horizontal screw frame (2313), and an image shooting camera (2317) for shooting the image of the electronic protective film is installed at the bottom end of the screw displacement block (2314).

9. The surface defect detection device for an electronic protective film according to claim 2, wherein, The flatness detection structure (24) includes a displacement adjustment frame (2401) fixedly assembled on the front side wall of the conveying frame (2101), and a screw rod two (2402) is rotatably installed inside the displacement adjustment frame (2401). One end of the screw rod two (2402) rotatably penetrates outside the displacement adjustment frame (2401) and is fixedly assembled with a bevel gear two (2403). A displacement adjustment rod (2404) which is helically driven and sleeved outside the screw rod two (2402) is movably arranged inside the displacement adjustment frame (2401), and an assembly frame (2405) is detachably assembled at the top of the displacement adjustment rod (2404).

10. The surface defect detection device for an electronic protective film according to claim 9, characterized in that, A cylinder one (2406) is assembled at the top of the displacement adjustment rod (2404), and a detection frame (2407) is assembled at the output end of the cylinder one (2406). A number of flatness detection rods (2408) are movably arranged inside the detection frame (2407), and detection balls (2411) are rotatably assembled at the bottom ends of the flatness detection rods (2408). A flatness sensor (2409) for pressure detection is installed at the top of the flatness detection rod (2408), and a spring (2410) is installed between the flatness sensor (2409) and the flatness detection rod (2408).

Images