Automobile color changing film defect detection method and detection device

Abstract

The invention relates to the technical field of color change film detection, and discloses an automobile color change film defect detection method and detection device.The automobile color change film defect detection device comprises a detection table, supporting plates are symmetrically arranged on the inner wall of the surface of the detection table, a lifting driving column is arranged on one side of the detection table, and a lifting frame is slidably connected to the inner wall of the lifting driving column; a control instrument is fixedly installed at the top of the lifting frame, a high-definition detection head is fixedly connected to the bottom of the control instrument, a sweeping assembly is arranged on the surface of the detection table and comprises a main rotating shaft, the main rotating shaft is rotationally connected to the top of the detection table, and a sweeping rod is fixedly connected to the outer wall of the main rotating shaft. The cleaning rods are driven by the main rotating shaft to rotate, the bottoms of the cleaning rods sweep along the upper portion of the detection table, pollutants on the surface of the film body can be effectively removed, a clear detection environment is provided for a high-definition detection head, and therefore the accuracy of detection of indexes such as color uniformity, surface flatness and flaws of the color-changed film body is improved, and the overall detection quality is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of color-changing film detection, and particularly relates to a color-changing film defect detection method and device for automobiles. BACKGROUND

[0002] With the continuous upgrading of the automobile consumption market and the explosive growth of personalized demand, the color-changing film for automobiles, as an important subdivision field of the automobile aftermarket, has shown a strong development trend in recent years. The color-changing film is prone to defects such as edge curling, discoloration, bubbles and scratches during use, which seriously affects the aesthetic appearance and paint protection effect of the vehicle, and may even cause safety hazards due to film material aging and falling off. Consumers' demand for high-quality color-changing film is increasing, and the limitations of existing detection methods have become a key bottleneck restricting the high-quality development of the industry.

[0003] A comprehensive detection process is designed for various defects that may occur in the color-changing film for automobiles, such as bubbles, scratches, wrinkles and uneven color difference. The surface image of the color-changing film is obtained through an image acquisition system, and an image processing algorithm is used to analyze the image. The image acquisition system acquires the image of the color-changing film in real time and transmits the image to the image processing system. The image processing system performs preprocessing on the image, such as denoising and enhancement, to improve the accuracy of defect recognition. Then, a preset defect recognition algorithm is used to analyze the image to determine whether there is a defect.

[0004] During the production, storage and transportation of the color-changing film for automobiles, dust, impurities and fibers may be adsorbed on the surface of the film, which not only affects the appearance quality of the film body and reduces its decorative effect, but also causes the detection device to provide inaccurate detection data for color uniformity and surface flatness, resulting in misjudgment and affecting the accurate judgment of whether the film body is qualified.

[0005] Therefore, the application provides a color-changing film defect detection method and device for automobiles. SUMMARY

[0006] To make up for the deficiencies of the prior art: solve at least one technical problem raised in the background art.

[0007] The technical solution adopted by the application to solve the technical problems is: the color-changing film defect detection method for automobiles, comprising the following steps: S1: film body placement and preliminary positioning, placing the color-changing film body for detection above the detection table, so that the bottom of the film body is attached to the upper surfaces of the two support plates, and precise positioning is achieved; S2: cleaning the surface pollutants of the film body, the lifting frame is lowered to bring the high-definition detection head close to the surface of the film body. During this process, the magnetic assembly and the sweeping assembly move to cause the cleaning rod to sweep the surface of the film body smoothly, and the dust, impurities and fibers are removed. S3: The high-definition detection head detects the film body, after the impurities are removed, the lifting frame continues to descend, the high-definition detection head reaches the appropriate detection position, and the color-changing film body is detected in an all-round and meticulous manner; S4: Reset after detection, after the detection is completed, the lifting drive column drives the lifting frame to rise and reset, and drives the high-definition detection head to return to the initial position; S5: When the lifting frame rises and resets, the support plate is turned over by the material taking assembly, the film body placed on the support plate loses support and falls into the material collecting bin under the action of its own gravity, realizing automatic material taking.

[0008] A color-changing film defect detection method for an automobile, and a magnetic force assembly and a sweeping assembly specifically include the following steps: G1: When the lifting frame is descending, the magnet is driven to descend synchronously by the side connecting frame, and when the magnet descends to a range in which the magnet exerts a magnetic force on the light iron block, the magnet attracts the light iron block to gradually move close to the magnet; G2: The light iron block drives the rack rod to move, and when the rack rod moves, the inner sliding block slides along the inner wall of the fixed sliding seat, the teeth of the rack rod are in turn engaged with the teeth of the gear to drive the gear to rotate; G3: The rotation of the gear is transmitted to the cleaning rod through the main shaft, and the cleaning rod rotates around the main shaft as the axis, so that the cleaning rod makes a circular sweeping motion above the detection table, realizing cleaning of the surface of the film body. Since the number of teeth of the rack rod is half the number of teeth of the gear, the cleaning rod will eventually sweep to a certain degree, which can realize comprehensive cleaning and accurately push the impurities swept to the collection box.

[0009] A color-changing film defect detection device for an automobile, comprising a detection table, the surface inner wall of the detection table is symmetrically provided with support plates, one side of the detection table is provided with a lifting drive column, the inner wall of the lifting drive column is slidably connected with a lifting frame, the top of the lifting frame is fixedly installed with a control instrument, the bottom of the control instrument is fixedly connected with a high-definition detection head, the surface of the detection table is provided with a sweeping assembly, the sweeping assembly comprises a main shaft, the main shaft is rotatably connected to the top of the detection table, the outer wall of the main shaft is fixedly connected with a cleaning rod, and the bottom of the cleaning rod can sweep along the surface of the detection table when the cleaning rod rotates, the side of the lifting frame is provided with a magnetic force assembly for driving the main shaft to rotate, and one side of the two support plates is provided with a material taking assembly for driving the two support plates to flip downward.

[0010] Preferably, the detection table is fixedly connected with a positioning plate above, the positioning plate is fixedly connected with an arc-shaped protective plate above, the surface of the detection table is provided with a dust outlet groove, and the lower side of the dust outlet groove is provided with a collection box.

[0011] Preferably, the sweeping assembly further includes a fixed slide, which is fixedly installed above the detection table. An inner slider is slidably connected to the inner wall of the fixed slide, and a rack is fixedly connected above the inner slider. A gear is fixedly connected to the outer wall of the main rotating shaft. The teeth of the rack mesh with the teeth of the gear, and the number of teeth of the rack is half the number of teeth of the gear.

[0012] Preferably, the magnetic component includes a side bracket, which is fixedly connected to one side of the lifting frame. A connecting rod is inserted into the inner wall of one end of the side bracket, and a magnet is fixedly connected to the bottom of the connecting rod. A lightweight iron block is fixedly connected to one side of the rack rod, and the lightweight iron block is slidably connected to the upper surface of the fixed slide. A spring is fixedly connected between the top of the magnet and the bottom of the side bracket, and a spring is fixedly connected between the inner slider and the inner wall of the fixed slide.

[0013] Preferably, the material handling assembly includes two rotating rods, each of which is rotatably connected to the inner wall of one end of two support plates. In the initial state, one end of the two support plates is joined together and attached to each other. Both rotating rods penetrate the inner wall of the inspection table and are rotatably connected. A material collection bin is provided at the bottom of the inspection table. A tilting assembly that drives the two rotating rods to rotate is provided below the lifting frame. Bases are fixedly connected to both sides of the lifting drive column. Bearing seats are fixedly connected to the top of the bases. Rotating rods are fixedly connected to the shafts of the bearing seats. Differential gears are fixedly connected to the outer wall of rotating rods. Differential gears are meshed with differential gears. Differential gears are fixedly connected to the outer wall of rotating rods. Connecting rods are fixedly connected to the outer wall of the shafts of the bearing seats. An extrusion block is fixedly connected to the end of the connecting rod away from the bearing seat.

[0014] Preferably, a base is fixedly connected to both sides of the lifting drive column, a bearing seat is fixedly connected to the top of the base, a rotating rod is fixedly connected to the shaft of the bearing seat, a differential gear is fixedly connected to the outer wall of the rotating rod, a differential gear is fixedly connected to the teeth of the differential gear, a differential gear is fixedly connected to the teeth of the differential gear, the differential gear is fixedly connected to the outer wall of the rotating rod, a connecting rod is fixedly connected to the outer wall of the shaft of the bearing seat, and a pressing block is fixedly connected to the end of the connecting rod away from the bearing seat.

[0015] Preferably, the flipping assembly includes a T-shaped frame, which is fixedly connected to the bottom of the lifting frame. Springs three are fixedly connected to both sides of the T-shaped frame, and the ends of the springs three away from the compression block two are fixedly connected to the compression block two.

[0016] Preferably, a torsion spring is fixedly connected to the bottom of each connecting rod, and the end of the torsion spring away from the connecting rod is fixedly connected to the side of the bearing seat. A limiting bottom rod is fixedly connected to the side of each bearing seat, and the end of the limiting bottom rod away from the bearing seat is in contact with the bottom of the connecting rod in the initial state.

[0017] The beneficial effects of this invention are as follows: 1. The present invention discloses a method and device for detecting defects in automotive color-changing films. Through a sweeping assembly, a sweeping rod rotates under the drive of the main shaft, sweeping along the top of the inspection platform. This effectively removes contaminants from the film surface, providing a clean inspection target for subsequent testing. After sweeping, the sweeping rod does not obstruct the film surface or hinder the high-definition inspection head from performing comprehensive and detailed inspections. By effectively removing contaminants from the film surface, a clear inspection environment is provided for the high-definition inspection head, enabling it to accurately capture various characteristics of the film. This improves the accuracy of detecting indicators such as color uniformity, surface smoothness, and defects in the color-changing film, thereby enhancing the overall inspection quality.

[0018] 2. The automotive color-changing film defect detection method and device of the present invention, through the material handling component, after the detection task is completed, when the lifting drive column drives the lifting frame to rise and reset, the material handling component can drive two support plates to flip downwards. After the support plates flip downwards, the color-changing film placed on them loses its support and slides off the detection table under its own gravity, falling into a pre-set collection container, realizing the automatic material handling operation of the film after detection and improving the work efficiency of the entire detection process. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a perspective view of the entire invention; Figure 2 This is a schematic diagram of the structure at the lifting drive column in this invention; Figure 3 This is a schematic diagram of the positioning plate structure in this invention; Figure 4 This is a schematic diagram of the rack and pinion structure in this invention; Figure 5 This is a schematic diagram of the structure at the magnet in this invention; Figure 6 This is a schematic diagram of the base structure in this invention; Figure 7 This is a schematic diagram of the structure at the support plate in this invention; Figure 8 This is a schematic diagram of the bearing housing structure in this invention; Figure 9 This is a schematic diagram of the connecting rod structure in this invention.

[0021] In the diagram: 1. Testing platform; 2. Support plate; 3. Lifting drive column; 4. Lifting frame; 5. Control instrument; 6. High-definition testing head; 7. Main shaft; 8. Cleaning rod; 9. Fixed slide; 10. Inner slider; 11. Rack and pinion; 12. Gear; 13. Lightweight iron block; 14. Side frame; 15. Connecting rod; 16. Magnet; 17. Spring 1; 18. Spring 2; 19. Positioning plate; 20. Arc-shaped protective plate; 21. Dust outlet trough; 22. Collection box; 23. Rotating rod 1; 24. Differential gear 1; 25. Collection bin; 26. Rotating rod 2; 27. Differential gear 2; 28. Bearing seat; 29. ​​Base; 30. Connecting rod; 31. Extrusion block 1; 32. T-shaped frame; 33. Extrusion block 2; 34. Spring 3; 35. Torsion spring; 36. Limiting bottom rod. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] A method for detecting defects in automotive color-changing films includes the following steps: S1: Placement and initial positioning of the membrane: Place the color-changing membrane for testing above the testing stage 1, so that its bottom is attached to the upper surface of the two support plates 2 to achieve precise positioning; S2: Cleaning contaminants on the membrane surface. The lifting frame 4 descends, bringing the high-definition detection head 6 close to the membrane surface. This process is carried out through the magnetic component and the sweeping component, causing the cleaning rod 8 to smoothly sweep the membrane surface and remove contaminants such as dust, impurities and fibers. S3: The high-definition detection head 6 inspects the film. After the impurities are removed, the lifting frame 4 continues to descend. The high-definition detection head 6 reaches the appropriate inspection position and performs a comprehensive and detailed inspection of the color-changing film. S4: Reset after detection. After the detection is completed, the lifting drive column 3 drives the lifting frame 4 to rise and reset, which in turn drives the high-definition detection head 6 back to the initial position. S5: When the lifting frame 4 rises and resets, it will drive the support plate 2 to flip through the material picking component. The membrane placed on the support plate 2 loses support and falls into the collection bin 25 under its own gravity, realizing automatic material picking.

[0024] A method for detecting defects in automotive color-changing films, comprising a magnetic component and a sweeping component, specifically includes the following steps: G1: When the lifting frame 4 descends, it will drive the magnet 16 to descend synchronously through the side frame 14. When the magnet 16 descends to the range that generates magnetic attraction to the light iron block 13, the magnet 16 will attract the light iron block 13 to gradually move closer to it. G2: The lightweight iron block 13 drives the rack rod 11 to move. When the rack rod 11 moves, the inner slider 10 slides along the inner wall of the fixed slide block 9. The teeth of the rack rod 11 will mesh with the teeth of the gear 12 in sequence, thereby driving the gear 12 to rotate. G3: The rotation of gear 12 is transmitted to the cleaning rod 8 through the main shaft 7. The cleaning rod 8 rotates around the main shaft 7, so that the cleaning rod 8 makes a circular sweeping motion along the top of the detection table 1 to clean the surface of the membrane. Since the number of teeth of the rack 11 is half the number of teeth of the gear 12, the cleaning rod 8 will eventually sweep 180 degrees, which can achieve a thorough cleaning and accurately push the cleaned impurities into the collection box 22.

[0025] like Figures 1 to 9 As shown, an automotive color-changing film defect detection device includes a detection platform 1. Support plates 2 are symmetrically arranged on the inner wall of the surface of the detection platform 1. A lifting drive column 3 is arranged on one side of the detection platform 1. A lifting frame 4 is slidably connected to the inner wall of the lifting drive column 3. A control instrument 5 is fixedly installed on the top of the lifting frame 4. A high-definition detection head 6 is fixedly connected to the bottom of the control instrument 5. A sweeping assembly is arranged on the surface of the detection platform 1. The sweeping assembly includes a main rotating shaft 7, which is rotatably connected to the top of the detection platform 1. A cleaning rod 8 is fixedly connected to the outer wall of the main rotating shaft 7. When the cleaning rod 8 rotates, its bottom can sweep along the surface of the detection platform 1. A magnetic component is arranged on the side of the lifting frame 4 to drive the main rotating shaft 7 to rotate. A material picking assembly is arranged on one side of the two support plates 2 to drive the two support plates 2 to flip downward.

[0026] During operation: Place the color-changing film to be tested above the testing platform 1, with the bottom of the film adhering to the upper surfaces of the two support plates 2. After positioning the film, first activate the lifting drive column 3 to control the lifting frame 4 to slide downwards along its inner wall, causing the high-definition testing head 6 to descend close to the surface of the film. As the lifting frame 4 descends, it drives the main rotating shaft 7 to rotate via the magnetic component. This rotation causes one end of the cleaning rod 8 to rotate around the main rotating shaft 7. During this rotation, the bottom of the cleaning rod 8 sweeps along the top of the testing platform 1, effectively removing dust, impurities, fibers, and other contaminants from the film surface. These contaminants are easily adsorbed onto the surface of the color-changing film during production, storage, and transportation. If not cleaned properly, they will not only affect the appearance quality of the color-changing film, but also... Reducing its decorative effect may also interfere with the detection results of the high-definition detection head 6 during subsequent testing, leading to inaccurate detection data and misjudgments. After the cleaning rod 8 completes the cleaning of the membrane surface, the lifting frame 4 continues to descend until the high-definition detection head 6 reaches the appropriate detection position. After the cleaning rod 8 completes its sweeping, it will not obstruct the surface of the membrane and will not affect the high-definition detection head 6's detection operation. Then, the control instrument 5 starts the high-definition detection head 6, which begins to conduct a comprehensive and detailed inspection of the color-changing membrane. It can detect multiple indicators such as color uniformity, surface flatness, and the presence of defects (such as bubbles, scratches, and wrinkles). The control instrument 5 will receive the detection data transmitted back by the high-definition detection head 6 in real time and analyze and process this data to determine whether the color-changing membrane is qualified through preset algorithms and standards. After the inspection task is completed, the lifting drive column 3 drives the lifting frame 4 to rise and reset, and at the same time drives the high-definition inspection head 6 back to the initial position. When the lifting frame 4 rises and resets, the material picking component will drive the two support plates 2 to flip downward. After the support plates 2 flip downward, the color-changing film loses its support and will slide off the inspection table 1 under its own gravity and fall into the pre-set collection container, thereby realizing the automatic material picking operation of the film after inspection and improving the work efficiency of the entire inspection process. Through the above embodiments, the sweeping component, with the sweeping rod 8 rotating under the drive of the main shaft 7, sweeps along the top of the inspection table 1, effectively removing contaminants from the membrane surface, providing a clean inspection object for subsequent inspection work. After sweeping, the sweeping rod 8 does not obstruct the membrane surface and does not hinder the high-definition inspection head 6 from performing comprehensive and detailed inspection of the membrane. By effectively removing contaminants from the membrane surface, a clear inspection environment is provided for the high-definition inspection head 6, enabling the inspection head to accurately capture various features of the membrane, thereby improving the accuracy of inspection of indicators such as color uniformity, surface flatness, and defects of the color-changing membrane, and improving the overall inspection quality. Through the material handling component, after the inspection task is completed, when the lifting drive column 3 drives the lifting frame 4 to rise and reset, the material handling component can drive the two support plates 2 to flip downwards. After the support plates 2 flip downwards, the color-changing membrane placed on them loses its support and slides off the inspection table 1 under its own gravity, falling into the pre-set collection container, realizing the automatic material handling operation of the membrane after inspection, and improving the work efficiency of the entire inspection process.

[0027] like Figure 3 As shown, a positioning plate 19 is fixedly connected above the testing table 1, and an arc-shaped protective plate 20 is fixedly connected above the positioning plate 19. A dust outlet groove 21 is opened on the surface of the testing table 1, and a collection box 22 is provided below the dust outlet groove 21.

[0028] During operation: After the membrane is placed on the upper surface of the support plate 2, it is precisely embedded in the inner groove wall of the positioning plate 19. This precise positioning ensures that the membrane will not easily shift during the testing process. Furthermore, the top of the membrane is flush with the upper surface of the positioning plate 19. The cleaning rod 8 rotates under the drive of the rotating device, and its bottom fits tightly against the upper surface of the positioning plate 19. Since the upper surface of the positioning plate 19 is flush with the top of the membrane, the cleaning rod 8 can smoothly pass over the upper surface of the membrane during the sweeping process. Under the action of the positioning plate 19, the membrane can remain stationary during the sweeping process, thereby effectively removing dust, impurities, fibers, and other contaminants from the membrane surface. The removed contaminants, driven by the cleaning rod 8, will gradually converge along the upper surface of the positioning plate 19 towards the dust outlet groove 21 on the surface of the testing table 1, and then fall smoothly into the collection box 22 below it. This achieves centralized collection of contaminants, preventing them from falling back onto the testing table 1 or the membrane surface, and ensuring a clean testing environment.

[0029] like Figures 4 to 5As shown, the sweeping assembly also includes a fixed slide 9, which is fixedly installed above the detection table 1. An inner slider 10 is slidably connected to the inner wall of the fixed slide 9, and a rack rod 11 is fixedly connected above the inner slider 10. A gear 12 is fixedly connected to the outer wall of the main rotating shaft 7. The teeth of the rack rod 11 and the teeth of the gear 12 mesh with each other, and the number of teeth of the rack rod 11 is half the number of teeth of the gear 12.

[0030] During operation: When the lifting frame 4 descends, it drives the inner slider 10 to slide along the inner wall of the fixed slide block 9 via the magnetic component. During the sliding process, it drives the rack 11 to move. Since the teeth of the rack 11 mesh with the teeth of the gear 12, when the rack 11 moves, its teeth will mesh with the teeth of the gear 12 in sequence, thereby driving the gear 12 to rotate. The rotation of the gear 12 will be transmitted to the cleaning rod 8 through the main rotating shaft 7. The cleaning rod 8 rotates around the main rotating shaft 7, thereby making the cleaning rod 8 perform a circumferential sweeping motion along the top of the detection table 1 to clean the surface of the membrane. Since the number of teeth of the rack 11 is half the number of teeth of the gear 12, the cleaning rod 8 will eventually sweep 180 degrees, which can achieve comprehensive cleaning and accurately push the cleaned impurities into the collection box 22.

[0031] like Figure 5 As shown, the magnetic assembly includes a side bracket 14, which is fixedly connected to one side of the lifting frame 4. A connecting rod 15 is inserted into the inner wall of one end of the side bracket 14. A magnet 16 is fixedly connected to the bottom of the connecting rod 15. A lightweight iron block 13 is fixedly connected to one side of the rack rod 11. The lightweight iron block 13 is slidably connected to the upper surface of the fixed slide block 9. A spring 17 is fixedly connected between the top of the magnet 16 and the bottom of the side bracket 14. A spring 2 18 is fixedly connected between the inner slider 10 and the inner wall of the fixed slide block 9.

[0032] During operation: When the lifting frame 4 descends, it synchronously drives the magnet 16 to descend via the side connecting frame 14. When the magnet 16 descends to the range where it magnetically attracts the lightweight iron block 13, the magnet 16 attracts the lightweight iron block 13 to gradually move closer to it, thereby driving the rack 11 to move, causing the cleaning rod 8 to rotate and sweep away impurities on the surface of the membrane. When the magnet 16 descends to the point where it is in contact with the top of the fixed slide 9, the lightweight iron block 13 will be tightly in contact with the side of the magnet 16. The rack 11 has completed the complete movement process with the gear 12. If the lifting frame 4 needs to continue descending, the magnet 16 will always remain in contact with the fixed slide 9. Above the fixed slide 9, to maintain the magnetic attraction to the lightweight iron block 13, during this process, the insertion rod 15 slides along the inside of the side frame 14 and compresses the spring 17 to deform. At this time, the sweeping rod 8 has completed the sweeping operation. When the rack rod 11 moves, the inner slider 10 slides along the inner wall of the fixed slide 9 and compresses the spring 18 to deform. After the inspection is completed, when the lifting frame 4 rises, the magnet 16 will rise and reset. After the lightweight iron block 13 loses its magnetic force, the rack rod 11 will move in the opposite direction and reset under the elastic force of the spring 18, thereby causing the sweeping rod 8 to sweep in the opposite direction and rotate to reset, preparing for the next inspection.

[0033] like Figures 6 to 7 As shown, the material handling assembly includes two rotating rods 23, which are rotatably connected to the inner walls of one end of the two support plates 2 respectively. In the initial state, one end of the two support plates 2 is joined together and attached to each other. Both rotating rods 23 penetrate the inner wall of the detection table 1 and are rotatably connected. A material collection bin 25 is provided at the bottom of the detection table 1, and a flipping assembly that drives the two rotating rods 23 to rotate is provided below the lifting frame 4.

[0034] During operation: When the lifting frame 4 rises and resets, it will drive the two rotating rods 23 to rotate through the flipping component. When the two rotating rods 23 rotate, the two support plates 2 will simultaneously turn into the collection bin 25. During the relative rotation of the two support plates 2, the membrane originally placed on the surface of the support plates 2 will fall into the collection bin 25 due to loss of support and gravity, thus realizing the automatic collection of the membrane. When the lifting frame 4 resets to the initial position, the two support plates 2 rotate in opposite directions and return to the initial flat state of mutual merging and adhesion, preparing for the next placement of the membrane.

[0035] like Figures 6 to 8As shown, bases 29 are fixedly connected to both sides of the lifting drive column 3, bearing seats 28 are fixedly connected to the top of the bases 29, rotating rods 26 are fixedly connected to the shafts of the bearing seats 28, differential gears 27 are fixedly connected to the outer wall of the rotating rods 26, differential gears 24 are meshed with the teeth of the differential gears 27, differential gears 24 are fixedly connected to the outer wall of the rotating rods 23, connecting rods 30 are fixedly connected to the outer wall of the shafts of the bearing seats 28, and pressing blocks 31 are fixedly connected to the end of the connecting rods 30 away from the bearing seats 28.

[0036] During operation: When the lifting frame 4 rises, it applies an upward lifting force to the bottom of the compression block 31 via the tilting assembly. As the tilting assembly operates, the compression block 31 is gradually lifted to a position 45 degrees to the horizontal. This, in turn, drives the shaft of the bearing seat 28 to rotate 45 degrees via the connecting rod 30, thereby causing the rotating rod 26 and the differential gear 27 to rotate 45 degrees. Since there is a meshing relationship between the differential gear 27 and the differential gear 24, and the number of teeth on the differential gear 27 is twice that of the differential gear 24, according to the principle of gear transmission, when two meshing gears have different numbers of teeth, they... The rotation speed and direction of rotation will differ. Therefore, when differential gear 27 rotates 45 degrees, it will drive differential gear 24 to rotate 90 degrees. Differential gear 24 rotates in the opposite direction to differential gear 27. Differential gear 24 is fixed on rotating rod 23. Rotating rod 23 serves as the fulcrum for the rotation of support plate 2. When differential gear 24 rotates, it will drive rotating rod 23 to rotate, thereby enabling support plate 2 to rotate towards the inside of collection bin 25 with rotating rod 23 as the fulcrum. This allows the membrane placed on support plate 2 to gradually lose support during the rotation of support plate 2 and eventually fall into collection bin 25.

[0037] like Figure 7 and Figure 9 As shown, the flipping assembly includes a T-shaped frame 32, which is fixedly connected to the bottom of the lifting frame 4. Springs 34 are fixedly connected to both sides of the T-shaped frame 32, and the ends of the springs 34 away from the compression blocks 33 are fixedly connected to the compression blocks 33.

[0038] During operation: When the lifting frame 4 descends, it drives the compression block 2 33 to descend via the T-shaped frame 32. As the compression block 2 33 descends, its inclined surface gradually approaches the inclined surface of the compression block 1 31. When the two inclined surfaces contact each other, in order to smoothly pass through the compression block 1 31 and continue descending, the compression block 2 33 will be squeezed inward by the inclined surface of the compression block 1 31 and will move the spring 3 34. This process will not cause the compression block 1 31 to rotate. When the compression block 2 33 descends to the position below the compression block 1 31, the compression block 2 33 moves in the opposite direction and returns to its original state under the elastic force of the spring 3 34. When the lifting frame 4 drives the compression block 2 33 to descend, the compression block 2 33 will move in the opposite direction and return to its original state. When the second extrusion block 33 rises and resets, the top plane of the second extrusion block 33 contacts the bottom plane of the first extrusion block 31. Because the two are in planar contact, the second extrusion block 33 will lift the first extrusion block 31, causing the first extrusion block 31 to rotate downward around the shaft of the bearing seat 28. After the first extrusion block 31 rotates upward by 45 degrees, the second extrusion block 33 continues to rise and disengages from the contact relationship with the first extrusion block 31. Then the first extrusion block 31 rotates downward in the opposite direction to restore its original state. When the first extrusion block 31 rotates upward, the support plate 2 flips downward to discharge material. When it rotates downward in the opposite direction, the support plate 2 returns to its initial state.

[0039] like Figure 9 As shown, torsion springs 35 are fixedly connected to the bottom of each connecting rod 30. The end of the torsion spring 35 away from the connecting rod 30 is fixedly connected to the side of the bearing seat 28. A limiting bottom rod 36 is fixedly connected to the side of each bearing seat 28. The end of the limiting bottom rod 36 away from the bearing seat 28 is in contact with the bottom of the connecting rod 30 in the initial state.

[0040] During operation: The limiting rod 36 supports the bottom of the connecting rod 30 and the first pressing block 31, ensuring that they maintain their initial horizontal flatness. When the second pressing block 33 descends and contacts the inclined surface of the first pressing block 31, the limiting rod 36 prevents the first pressing block 31 from rotating downwards due to the pressure from the second pressing block 33. The second pressing block 33 can only compress the third pressing spring 34 to move laterally. When the first pressing block 31 is lifted by the upward force of the second pressing block 33, it can rotate upwards, during which the torsion spring 35 is stretched. When the second pressing block 33 rises to a certain height and disengages from the third pressing spring 34, the first pressing block 31 rotates in the opposite direction to reset under the action of the torsion spring 35, thereby achieving the reverse rotation and reset of the two support plates 2.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for detecting defects in automotive color-changing films, comprising the following steps, characterized in that: S1: Membrane placement and preliminary positioning: Place the color-changing membrane to be tested above the testing stage, ensuring that its bottom is in contact with the upper surface of the support plate to achieve precise positioning; S2: Cleaning contaminants on the membrane surface. The lifting frame descends, bringing the high-definition detection head close to the membrane surface. This process is carried out through the movement of the magnetic component and the sweeping component, so that the cleaning rod can smoothly sweep the membrane surface to remove contaminants such as dust, impurities and fibers. S3: The high-definition detection head inspects the film. After the impurities are removed, the lifting frame continues to descend, and the high-definition detection head reaches the appropriate inspection position to conduct a comprehensive and detailed inspection of the color-changing film. S4: Reset after detection. After the detection is completed, the lifting drive column drives the lifting frame to rise and reset, which in turn drives the high-definition detection head back to the initial position. S5: When the lifting frame rises and resets, it will drive the support plate to flip through the material picking component. The membrane placed on the support plate loses its support and falls into the collection bin under its own gravity, thus realizing automatic material picking.

2. The method for detecting defects in automotive color-changing films according to claim 1, characterized in that: The magnetic assembly and the sweeping assembly specifically include the following steps: G1: When the lifting frame descends, it will drive the magnet to descend synchronously through the side frame. When the magnet descends to the range that generates magnetic attraction to the light iron block, the magnet will attract the light iron block to gradually move closer to it. G2: A lightweight iron block drives the rack rod to move. When the rack rod moves, the inner slider slides along the inner wall of the fixed slide block. The teeth of the rack rod will mesh with the teeth of the gear in sequence, thereby driving the gear to rotate. G3: The rotation of the gear is transmitted to the cleaning rod through the main shaft. The cleaning rod rotates around the main shaft, causing it to sweep around the top of the testing platform in a circular motion, thus cleaning the surface of the membrane. Since the number of teeth on the rack is half that of the gear, the cleaning rod will sweep more thoroughly, achieving comprehensive cleaning while accurately pushing the cleaned impurities into the collection box.

3. A method for detecting defects in automotive color-changing films according to claims 1-2 is now proposed, comprising a detection platform, characterized in that: The inner wall of the testing platform is symmetrically equipped with support plates. A lifting drive column is installed on one side of the testing platform. A lifting frame is slidably connected to the inner wall of the lifting drive column. A control instrument is fixedly installed on the top of the lifting frame. A high-definition detection head is fixedly connected to the bottom of the control instrument. A sweeping assembly is installed on the surface of the testing platform. The sweeping assembly includes a main rotating shaft, which is rotatably connected to the top of the testing platform. A cleaning rod is fixedly connected to the outer wall of the main rotating shaft. When the cleaning rod rotates, its bottom can sweep along the surface of the testing platform. A magnetic component is installed on the side of the lifting frame to drive the main rotating shaft to rotate. A material picking assembly is installed on one side of the two support plates to drive the two support plates to flip downward.

4. The automotive color-changing film defect detection device according to claim 3, characterized in that: A positioning plate is fixedly connected to the top of the testing table, and an arc-shaped protective plate is fixedly connected to the top of the positioning plate. A dust discharge trough is opened on the surface of the testing table, and a collection box is set below the dust discharge trough.

5. The automotive color-changing film defect detection device according to claim 4, characterized in that: The sweeping assembly also includes a fixed slide, which is fixedly installed above the detection table. An inner slider is slidably connected to the inner wall of the fixed slide, and a rack is fixedly connected above the inner slider. A gear is fixedly connected to the outer wall of the main shaft. The teeth of the rack mesh with the teeth of the gear, and the number of teeth of the rack is half the number of teeth of the gear.

6. The automotive color-changing film defect detection device according to claim 5, characterized in that: The magnetic assembly includes a side bracket, which is fixedly connected to one side of the lifting frame. A connecting rod is inserted into the inner wall of one end of the side bracket, and a magnet is fixedly connected to the bottom of the connecting rod. A lightweight iron block is fixedly connected to one side of the rack rod, and the lightweight iron block is slidably connected to the upper surface of the fixed slide. A spring is fixedly connected between the top of the magnet and the bottom of the side bracket, and a spring is fixedly connected between the inner slider and the inner wall of the fixed slide.

7. The automotive color-changing film defect detection device according to claim 6, characterized in that: The material handling assembly includes two rotating rods, which are rotatably connected to the inner wall of one end of two support plates respectively. In the initial state, one end of the two support plates is joined together and attached to each other. Both rotating rods penetrate the inner wall of the inspection table and are rotatably connected. A material collection bin is provided at the bottom of the inspection table, and a flipping assembly that drives the two rotating rods to rotate is provided below the lifting frame.

8. The automotive color-changing film defect detection device according to claim 7, characterized in that: Both sides of the lifting drive column are fixedly connected to bases, and the top of each base is fixedly connected to a bearing seat. The shaft of each bearing seat is fixedly connected to a rotating rod two. Differential gear two is fixedly connected to the outer wall of the rotating rod two. Differential gear two meshes with differential gear one. Differential gear one is fixedly connected to the outer wall of the rotating rod one. The outer wall of the shaft of each bearing seat is fixedly connected to a connecting rod. The end of the connecting rod away from the bearing seat is fixedly connected to a pressing block one.

9. The automotive color-changing film defect detection device according to claim 8, characterized in that: The flipping assembly includes a T-shaped frame, which is fixedly connected to the bottom of the lifting frame. Springs three are fixedly connected to both sides of the T-shaped frame, and the ends of the springs three away from the compression block two are fixedly connected to the compression block two.

10. The automotive color-changing film defect detection device according to claim 9, characterized in that: Each connecting rod has a torsion spring fixedly connected to its bottom. The end of the torsion spring away from the connecting rod is fixedly connected to the side of the bearing housing. Each bearing housing has a limiting bottom rod fixedly connected to its side. The end of the limiting bottom rod away from the bearing housing is in contact with the bottom of the connecting rod in its initial state.

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