Bubble detection equipment for film pasting based on OLED (Organic Light Emitting Diode) display screen

Abstract

The invention relates to the technical field of display screen detection, in particular to OLED display screen film pasting bubble detection equipment which comprises a frame body, a conveying mechanism and a detection mechanism are arranged on the frame body, the detection mechanism comprises a cover body and an image acquisition module, and a cleaning sponge is arranged at the bottom of the cover body. A dust collection assembly is arranged on the other side, right opposite to the cleaning sponge, of the cover body, a driving assembly used for driving the cleaning sponge to enter the dust collection assembly is further arranged on the cover body, and a height adjusting mechanism used for adjusting the height of the cover body is arranged on the frame body. The cleaning sponge is used for wiping the surface of the screen film and is matched with the dust collection assembly to regularly clean the screen film and remove dust and tiny particles, it is ensured that the image acquisition module obtains clear images, the screen body completely enters the cover body, the rubber ring makes close contact with the moving plate to form a sealed space, external dust is prevented from entering a detection area, and the detection efficiency is improved. The bubble detection accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the field of image detection technology, and in particular to a bubble detection device for OLED display screen film application. Background Art

[0002] During the film application process for OLED displays, improper application can trap air beneath the film, forming bubbles. To ensure film quality, post-application bubble detection is necessary. However, traditional bubble detection methods have significant shortcomings, relying primarily on manual visual inspection. This method is not only inefficient but also has limited accuracy, making it prone to missing tiny bubbles. The presence of bubbles can severely impact the display quality and screen durability, making it difficult to meet the demands of high-quality production.

[0003] The currently disclosed Chinese authorization announcement number CN117250196B is a defoaming detection device based on an OLED display screen, comprising a frame; and a plurality of groups of clamps slidably mounted on the frame for placing the screen; each group of the clamps comprises a detection table, on which two groups of electromagnetic clamping plate assemblies are provided, and a power chip slot provided on the detection table for docking the power chip where the screen is located, and an electric chip slot is connected to the bottom of the power chip slot; a connecting rod driving mechanism provided at the lower part of the frame, which moves the plurality of clamps in a circular motion trajectory up, down, left, and right for step-by-step feeding, and an electric chip plug provided on the frame, and when the connecting rod driving mechanism moves upward When in action, the chip plug is used to dock with the chip slot at the detection position and thus light up the screen; it also includes a detection mechanism arranged on the upper part of the frame, and the detection mechanism includes an engaging transmission frame, and a hemispherical cover assembly and a light source assembly arranged on the engaging transmission frame; the hemispherical cover assembly includes two covers, and when the two covers wrap the light source assembly, a concave mirror is formed. At this time, the light source assembly is located at the focal position of the concave mirror where the cover is located. When the two covers are covered above the screen, the light source assembly emits a number of parallel light rays under the action of the covers and acts on the surface of the screen; and a number of image acquisition modules arranged on the hemispherical cover assembly are used to acquire images of the screen surface under parallel light rays.

[0004] According to the above patent, the above patent can provide a short connection method for the power chip through the structural setting of the clamp, which is convenient for the detection of the screen in the lighting mode. At the same time, under the action of the detection mechanism, it is composed of a hemispherical cover assembly and a light source assembly. The image acquisition performed greatly reduces the occurrence of reflections, bright blocks and other phenomena. However, during the transportation of the screen, dust may adhere to the surface of the screen. If image detection is performed directly, dust particles may be mistaken by the image acquisition module as defects on the surface of the screen, resulting in misjudgment. This not only increases the workload of subsequent manual re-inspection, but may also affect production efficiency. Therefore, there is a need for a bubble detection device for OLED display screen film that can prevent dust interference and ensure accurate image detection results. Summary of the Invention

[0005] In response to the problems existing in the existing technology, a bubble detection device based on OLED display screen film is provided. The device wipes the surface of the screen film with a cleaning sponge and cleans itself regularly with a dust collection component to remove dust and tiny particles, ensuring that the image acquisition module obtains clear images. As the screen body completely enters the cover body, the rubber ring is in close contact with the movable plate to form a sealed space, preventing external dust from entering the detection area and improving the accuracy of bubble detection.

[0006] In order to solve the problems of the prior art, the present invention provides a bubble detection device for film pasting based on an OLED display screen, comprising a frame, the frame being provided with a conveying mechanism for conveying the screen and a detection mechanism for performing bubble detection on the screen film adhered to the surface of the screen, the detection mechanism comprising a cover and an image acquisition module arranged in the cover, a cleaning sponge being provided at the bottom of the cover for removing dust from the surface of the screen film when the screen passes by, the cleaning sponge being located on one side of the cover along the conveying direction of the conveying mechanism, a dust collection assembly being provided on the other side of the cover facing the cleaning sponge for cleaning the cleaning sponge, the cleaning sponge being able to move on the cover, the cover being further provided with a driving assembly for driving the cleaning sponge into the dust collection assembly, a height adjustment mechanism being provided on the frame for adjusting the height of the cover according to the thickness of the screen so that the cleaning sponge can contact the surface of the screen film, when the screen passes by the cleaning sponge under the drive of the conveying mechanism, the surface of the screen film is in a state of being wiped by the cleaning sponge, so that the image acquisition module can perform accurate bubble detection on the screen entering the cover.

[0007] Preferably, a rubber ring is provided along the circumferential direction of the bottom of the cover, and the conveying mechanism has a movable plate for placing the screen. When the screen moves toward the cover, the cleaning sponge contacts the screen film. At this time, a gap is left between the rubber ring and the screen film. When the screen completely enters the cover, the rubber ring contacts the movable plate. At this time, a sealed space is formed between the cover and the movable plate. At the same time, the cleaning sponge is squeezed on the movable plate and fits against the outer wall of the rubber ring, so that outside air and dust on the cleaning sponge cannot enter the sealed space through the rubber ring.

[0008] Preferably, a shaft extending into the interior of the cover is provided at the center of the cover, the shaft having a negative pressure channel opened from top to bottom along its axial direction, a plurality of exhaust holes opened along its circumferential direction on the lower half of the shaft, a plurality of air holes opened along its circumferential direction on the cover, and a dust net provided on the inner wall of the cover corresponding to the position of the air holes.

[0009] Preferably, an annular airbag is provided inside the cover body and below the image acquisition module, and an inflation cavity is formed between the annular airbag and the cover body. The cover body has an inflation port connected to the inflation cavity. When the rubber ring is not in contact with the movable plate, the annular airbag is in an inflated state. At this time, the annular airbag serves as a barrier structure to prevent dust from adhering to the image acquisition module.

[0010] Preferably, a photoelectric sensor is provided at a position on the frame corresponding to the center of the cover body, and a reflective portion is provided on the central edge of the movable plate that can pass through the photoelectric sensor. When the photoelectric sensor detects the reflective portion, the conveying mechanism is in a shutdown state, and the screen placed on the movable plate is completely stationary inside the cover body.

[0011] Preferably, the height adjustment mechanism includes a lifting plate and a lifting driver for driving the lifting plate to move up and down, the cover body is rotatably arranged on the lifting plate, the lifting plate is provided with the driving assembly for driving the shaft to rotate together with the cover body, the lifting plate has an annular step sleeved on the cover body, a bearing is provided between the cover body and the annular step, the dust collection assembly is provided on the annular step, when the cover body rotates relative to the annular step so that the cleaning sponge passes through the dust collection assembly, the cleaning sponge is in a cleaning state.

[0012] Preferably, a plurality of the cleaning sponges are evenly distributed on the cover along its circumferential direction. When a cleaning sponge enters the dust collection assembly, there is always a cleaning sponge in working condition on the side of the screen being conveyed, so that the screen is wiped by the cleaning sponge before it completely enters the cover.

[0013] Preferably, the dust collection assembly includes a dust collection bin body and a dust collection pipe provided on the dust collection bin body. The dust collection pipe is located at a position on the dust collection bin body where it can come into contact with the cleaning sponge. A number of dust collection ports are provided on the dust collection pipe. When the cover body rotates so that the cleaning sponge passes through the dust collection bin body, the cleaning sponge enters between the dust collection bin body and the cover body, and at the same time comes into contact with the dust collection pipe and is in a squeezed state.

[0014] Preferably, a light source for illuminating the interior of the cover is provided at the lower end of the shaft.

[0015] Preferably, a plurality of the image acquisition modules are provided inside the cover body around the shaft.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The present invention automatically adjusts the height of the cover through a height adjustment mechanism, ensuring that the cleaning sponge always clings to the surface of the screen film, achieving adaptability to screens of different thicknesses and optimal cleaning effects.

[0018] As the screen is transported, the cleaning sponge wipes the screen as it passes by and cooperates with the dust collection component to regularly clean the cleaning sponge, thereby removing dust and other tiny particles on the surface of the screen film, ensuring that the image acquisition module obtains clear images and preventing misjudgment.

[0019] 2. The sealed space formed by the close contact between the rubber ring and the movable plate not only prevents external dust and impurities from entering the detection area, but also provides a stable working environment for the image acquisition module, ensuring that the image acquisition process is not disturbed by external factors, thereby improving the accuracy and reliability of bubble detection.

[0020] At the same time, the shaft exhaust effectively sucks out the remaining dust in the cover and cooperates with the air holes on the cover and the dust-proof net on the inner wall to achieve air circulation while preventing external dust from entering the detection area, maintaining the air pressure balance in the cover, and further improving the cleaning effect and image acquisition accuracy.

[0021] 3. The present invention introduces gas through the inflation port to inflate the annular airbag, forming a barrier structure inside the cover body. This prevents dust from adhering to the image acquisition module when the rubber ring is not in contact with the movable plate, ensuring that the image acquisition module always remains clean, providing reliable protection for subsequent image acquisition.

[0022] 4. This invention uses the rotating cover to squeeze the cleaning sponge against the suction pipe, expelling air and loosening dust from the sponge. This allows the suction port to more efficiently absorb the squeezed dust. This not only ensures the sponge remains clean, but also significantly improves the screen surface wiping quality and overall cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of a bubble detection device for OLED display screen film according to the present invention.

[0024] Figure 2 This is a front view of a bubble detection device for OLED display screen film according to the present invention.

[0025] Figure 3 This is a top view of a bubble detection device for OLED display screen film according to the present invention.

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of a screen body of a bubble detection device for OLED display screen film according to the present invention.

[0027] Figure 5 The present invention is a schematic diagram of the three-dimensional structure of a detection mechanism and a movable plate of a bubble detection device for OLED display screen film.

[0028] Figure 6 This is a schematic diagram of a state in which a cleaning sponge enters a dust collection chamber based on a bubble detection device for OLED display screen film application according to the present invention.

[0029] Figure 7 It is a partial three-dimensional structural schematic diagram of a detection mechanism and a movable plate of a bubble detection device for OLED display screen film according to the present invention.

[0030] Figure 8 It is a planar cross-sectional view of a detection mechanism and a movable plate of a bubble detection device for OLED display screen film according to the present invention.

[0031] Figure 9 The present invention Figure 8 A magnified schematic diagram of .

[0032] Figure 10 The present invention Figure 8 Enlarged schematic diagram of point B.

[0033] Figure 11 This is a schematic diagram of a state in which a surface screen film is wiped by a cleaning sponge during the screen conveyance process of a bubble detection device for OLED display screen film according to the present invention.

[0034] Figure 12 This is a schematic diagram of a state in which the screen film on the screen surface of the bubble detection device for OLED display screen film of the present invention is wiped by a cleaning sponge until the screen body is completely entered into the cover body.

[0035] Figure 13The present invention is a partial three-dimensional structural cross-sectional view of a cover body, a dust collection component and a cleaning sponge of a bubble detection device for OLED display screen film application.

[0036] The numbers in the figure are: 1. frame; 11. photoelectric sensor; 12. lifting plate; 121. annular step; 122. bearing; 2. screen body; 21. screen film; 3. conveying mechanism; 31. moving plate; 311. reflecting part; 4. detecting mechanism; 41. cover body; 411. rubber ring; 412. shaft; 4121. negative pressure channel; 4122. exhaust hole; 4123. air vent; 413. dustproof net; 42. image acquisition module; 421. light source; 43. annular airbag; 431. inflation chamber; 432. inflation port; 5. cleaning sponge; 51. elastic connector; 6. dust suction component; 61. dust suction bin; 62. dust suction pipe; 621. dust suction port. DETAILED DESCRIPTION

[0037] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] See also Figures 1-8 As shown, a bubble detection device for film-sticking based on an OLED display screen includes a frame 1, on which a conveying mechanism 3 for conveying a screen 2 and a detection mechanism 4 for detecting bubbles on a screen film 21 attached to the surface of the screen 2 are provided. The detection mechanism 4 includes a cover 41 and an image acquisition module 42 arranged in the cover 41. A cleaning sponge 5 for removing dust from the surface of the screen film 21 when the screen 2 passes by is provided at the bottom of the cover 41. The cleaning sponge 5 is located on one side of the cover 41 along the conveying direction of the conveying mechanism 3, and a cleaning sponge 5 is provided on the other side of the cover 41 facing the cleaning sponge 5. A dust collection component 6 is used to clean the cleaning sponge 5. The cleaning sponge 5 can move on the cover body 41. The cover body 41 is also provided with a driving component for driving the cleaning sponge 5 into the dust collection component 6. The frame 1 is provided with a height adjustment mechanism for adjusting the height of the cover body 41 according to the thickness of the screen body 2 so that the cleaning sponge 5 can contact the surface of the screen film 21. When the screen body 2 passes through the cleaning sponge 5 under the drive of the conveying mechanism 3, the surface of the screen film 21 is in a state of being wiped by the cleaning sponge 5, so that the image acquisition module 42 can accurately detect bubbles on the screen body 2 entering the cover body 41.

[0039] The conveying mechanism 3 is provided with a defective area and a qualified area on both sides respectively. The frame 1 is provided with a material moving mechanism for classifying the screens 2 after inspection. The material moving mechanism and the height adjustment mechanism are not shown in the figure.

[0040] When screen 2 is placed onto conveyor mechanism 3, it is first smoothly conveyed forward. As screen 2 approaches inspection mechanism 4, the height adjustment mechanism automatically adjusts the height of cover 41 based on the actual thickness of screen 2 to ensure proper contact between cleaning sponge 5 and the surface of screen film 21. This ensures that cleaning sponge 5 maintains close contact with the surface of screen film 21, providing optimal conditions for subsequent cleaning and inspection.

[0041] When the screen 2 passes through the cleaning sponge 5, the cleaning sponge 5 wipes its surface to remove any dust and other tiny particles that may be present, ensuring that the subsequent image acquisition module 42 can obtain a clear image and preventing any tiny impurities from causing the image acquisition module 42 to misjudge and affect the final bubble detection result.

[0042] As the screen 2 is transported and placed within the housing 41, the cleaning sponge 5 completes wiping the surface of the screen 2. At this point, the image acquisition module 42 begins operation. Because the cleaning sponge 5 has already thoroughly pre-treated the surface of the screen 2, the image acquisition module 42 is able to capture a clearer image. The image acquisition module 42 uses a high-resolution camera to record the surface of the screen 2 and transmit the image data to the analysis system. The analysis system uses image processing algorithms to carefully analyze the image and identify any potential bubbles.

[0043] After the analysis system completes image processing and reaches a conclusion, the material transfer mechanism classifies the screen 2 based on the detection results. If no bubbles are found on the surface of the screen 2, it is judged as a qualified product and is transferred to the qualified area by the material transfer mechanism. Conversely, if bubbles are found, it is judged as a defective product and is transferred to the defective area by the material transfer mechanism.

[0044] As the screen 2 is subsequently transported, in order to keep the cleaning sponge 5 in good condition, the cleaning sponge 5 will enter the dust collection assembly 6 area under the action of the driving assembly, thereby completing self-cleaning. This not only extends the service life of the cleaning sponge 5, but also ensures that the best effect can be achieved every time the screen 2 is wiped.

[0045] See also Figure 1-Figure 3 、 Figure 5-Figure 12 As shown, a rubber ring 411 is provided along the circumferential direction of the bottom of the cover body 41, and the conveying mechanism 3 has a movable plate 31 for placing the screen body 2. When the screen body 2 moves toward the cover body 41, the cleaning sponge 5 contacts the screen film 21. At this time, there is a gap between the rubber ring 411 and the screen film 21. When the screen body 2 completely enters the cover body 41, the rubber ring 411 contacts the movable plate 31. At this time, a sealed space is formed between the cover body 41 and the movable plate 31. At the same time, the cleaning sponge 5 is squeezed on the movable plate 31 and fits the outer wall of the rubber ring 411, so that the outside air and the dust on the cleaning sponge 5 cannot enter the sealed space through the rubber ring 411.

[0046] An elastic connector 51 is fixedly provided between the cleaning sponge 5 and the cover body 41 to provide elastic support for the cleaning sponge 5 .

[0047] When the screen body 2 is fed into the housing 41, the cleaning sponge 5 contacts the screen film 21. The cleaning sponge 5 is stationary relative to the screen body 2, and the surface of the screen film 21 is wiped by the cleaning sponge 5 as the screen body 2 moves.

[0048] During the wiping process, a gap is left between the rubber ring 411 and the screen film 411. The height adjustment mechanism moves the cover body 41 so that the cleaning sponge 5 can contact the screen film 21 while ensuring that the rubber ring 411 does not contact the screen body 2, preventing the screen film 21 from falling off due to the contact between the screen film 21 and the rubber ring 411 during the transportation of the screen body 2.

[0049] After the screen 2 enters the area directly below the cover 41, the cover 41 is further moved by the height adjustment mechanism, so that the rubber ring 411 presses against the movable plate 31, thereby forming the sealed space between the cover 41 and the movable plate. At this time, the cleaning sponge 5 is further compressed and pressed against the movable plate 31. The outside air and dust on the cleaning sponge 5 are blocked by the rubber ring 411 and cannot enter the sealed space.

[0050] The formation of a sealed space between the cover 41 and the movable plate 31 prevents external dust and impurities from entering the detection area, and also provides a more stable environment for the subsequent image acquisition module 42, ensuring that the image acquisition process is not disturbed by the outside world, further improving the accuracy of bubble detection.

[0051] See also Figure 5-Figure 8 As shown, the center of the cover body 41 is provided with a shaft 412 extending into the interior thereof, and the shaft 412 has a negative pressure channel 4121 opened from top to bottom along its axial direction, and the lower half of the shaft 412 is provided with a plurality of exhaust holes 4122 along its circumferential direction, and the cover body 41 is provided with a plurality of air holes 4123 along its circumferential direction, and a dustproof net 413 is provided on the inner wall of the cover body 41 at the position corresponding to the air holes 4123.

[0052] When the screen 2 enters the housing 41, the central shaft 412 of the housing 41 generates a negative pressure environment through the internal negative pressure channel 4121 and the plurality of suction holes 4122 in the lower half. This effectively sucks out the remaining dust in the housing 41, ensuring that the image acquisition module 42 is not affected by the remaining dust during operation.

[0053] At the same time, several vent holes 4123 formed along the circumference of the cover 41 cooperate with the dust screen 413 on the inner wall to allow air circulation while preventing external dust from entering the detection area. This not only maintains the air pressure balance within the cover 41, but also further improves the cleaning effect and image acquisition accuracy.

[0054] See also Figure 5-Figure 8 As shown, an annular airbag 43 is provided inside the cover body 41 and below the image acquisition module 42. An inflation cavity 431 is formed between the annular airbag 43 and the cover body 41. The cover body 41 has an inflation port 432 connected to the inflation cavity 431. When the rubber ring 411 is not in contact with the movable plate 31, the annular airbag 43 is in an inflated state. At this time, the annular airbag 43 serves as a barrier structure for preventing dust from adhering to the image acquisition module 42.

[0055] When the rubber ring 411 is not in contact with the movable plate 31, the annular airbag 43 located below the image acquisition module 42 within the housing 41 is inflated through the inflation port 432. The inflated annular airbag 43 then forms an effective barrier within the housing 41, preventing dust from adhering to the image acquisition module 42 when no inspection is being performed.

[0056] This ensures that the image acquisition module 42 always remains clean before the rubber ring 411 contacts the movable plate 31 to form a sealed space, thereby preventing the adhesion of external dust, thereby providing reliable protection for subsequent image acquisition.

[0057] See also Figure 1-Figure 3 As shown, a photoelectric sensor 11 is provided at a position on the frame 1 corresponding to the center of the cover body 41, and a reflecting portion 311 is provided at the center edge of the movable plate 31 that can pass through the photoelectric sensor 11. When the photoelectric sensor 11 detects the reflecting portion 311, the conveying mechanism 3 is in a shutdown state, and the screen body 2 placed on the movable plate 31 has completely stayed inside the cover body 41.

[0058] As the movable plate 31 carries the screen 2 into the housing 41, the reflective portion 311 passes through the detection area of the photoelectric sensor 11. Once the photoelectric sensor 11 detects the reflective portion 311, the conveying mechanism 3 immediately stops, ensuring that the screen 2 on the movable plate 31 remains completely within the housing 41, ready for subsequent dust-free testing.

[0059] Through the cooperation between the photoelectric sensor 11 and the reflective portion 311 , the position of the screen 2 is precisely controlled, ensuring the accuracy and reliability of the detection operation.

[0060] See also Figure 5-Figure 9As shown, the height adjustment mechanism includes a lifting plate 12 and a lifting driver for driving the lifting plate 12 to move up and down. The cover body 41 is rotatably set on the lifting plate 12. The lifting plate 12 is provided with a driving component for driving the shaft 412 to rotate together with the cover body 41. The lifting plate 12 has an annular step 121 sleeved on the cover body 41. A bearing 122 is provided between the cover body 41 and the annular step 121. The dust collection component 6 is provided on the annular step 121. When the cover body 41 rotates relative to the annular step 121 so that the cleaning sponge 5 passes through the dust collection component 6, the cleaning sponge 5 is in a cleaning state.

[0061] The lifting drive and the drive assembly are not shown in the figure.

[0062] When the cover body 41 rotates relative to the annular step 121 through the driving of the rotary driver, the cleaning sponge 5 passes the position of the dust collection component 6. At this time, the cleaning sponge 5 will be cleaned, ensuring that the cleaning sponge 5 wiping the screen film 21 is always in a clean state, thereby providing protection for image acquisition.

[0063] After the screen body 2 completely enters the cover body 41 , the height of the cover body 41 is adjusted by starting the lifting drive until the rubber ring 411 contacts the movable plate 31 , forming a sealed space between the cover body 41 and the movable plate 31 .

[0064] See also Figure 5-Figure 9 As shown, a plurality of the cleaning sponges 5 are evenly distributed on the cover body 41 along its circumferential direction. When a cleaning sponge 5 enters the dust collection assembly 6, there is always a cleaning sponge 5 in working condition on the side of the conveying direction of the screen body 2, so that the screen body 2 is wiped by the cleaning sponge 5 before it completely enters the cover body 41.

[0065] When one of the multiple cleaning sponges 5 enters the dust collection assembly 6 for cleaning, there is always a clean cleaning sponge 5 in working condition on one side of the conveying direction of the screen body 2, ensuring that the screen body 2 can be effectively wiped before it completely enters the cover body 41.

[0066] The dust collecting assembly 6 improves the effect of wiping dust from the surface of the screen film 21 , thereby preventing excessive dust from adhering to the cleaning sponge 5 and causing poor cleaning effect.

[0067] See also Figure 5-Figure 8 、 Figure 10 and Figure 13As shown, the dust collection assembly 6 includes a dust collection bin body 61 and a dust collection pipe 62 arranged on the dust collection bin body 61. The dust collection pipe 62 is located at a position on the dust collection bin body 61 where it can contact the cleaning sponge 5. A number of dust collection ports 621 are provided on the dust collection pipe 62. When the cover body 41 rotates so that the cleaning sponge 5 passes through the dust collection bin body 61, the cleaning sponge 5 enters between the dust collection bin body 61 and the cover body 41, and at the same time contacts the dust collection pipe 62 and is in a squeezed state.

[0068] A dust collection space is formed between the dust collection bin body 61 and the cover body 41 , into which the cleaning sponge 5 can be squeezed.

[0069] When the cover 41 rotates, the cleaning sponge 5 enters the dust collection space and contacts the dust collection pipe 62. At this time, the cleaning sponge 5 is squeezed into the dust collection space and is in a compressed state. Due to the squeeze contact between the dust collection pipe 62 and the cleaning sponge 5, as the dust collection pipe 62 draws air, the dust collection port 621 on the dust collection pipe 62 can effectively remove dust and impurities on the cleaning sponge 5.

[0070] When the cleaning sponge 5 enters the dust collection space and comes into contact with the dust collection tube 62, it is compressed, forcing the air inside the cleaning sponge 5 to be expelled. As the air is expelled, the dust particles originally contained in the compressed space of the cleaning sponge 5 are loosened and squeezed out. At this point, the dust collection port 621 can more efficiently absorb the squeezed-out dust.

[0071] During the entire process, the dust collection assembly 6 remains stationary relative to the rotating cover 41, while the cleaning sponge 5 is drawn into and confined within the dust collection space formed between the cover 41 and the dust collection chamber 61 by the rotation of the cover 41, ensuring efficient cleaning. This ensures that the cleaning sponge 5 is restored to a clean state after each rotation of the cover 41, providing a guarantee for subsequent wiping of the screen film 21.

[0072] See also Figure 6-Figure 8 As shown, a light source 421 for illuminating the interior of the cover 41 is provided at the lower end of the shaft 412 .

[0073] When the image acquisition module 42 is running, the light source 421 will automatically light up, providing sufficient light to illuminate the entire interior of the cover 41. This ensures that during the detection process, bubbles on the surface of the screen film 21 can be clearly captured and discovered, thereby ensuring the accuracy and reliability of the detection.

[0074] See also Figure 6-Figure 8 As shown, a plurality of image acquisition modules 42 are provided inside the cover body 41 around the shaft 412 .

[0075] Multiple image acquisition modules 42 ensure all-around, comprehensive monitoring of the surface of the diaphragm 21 within the housing 41, capturing bubbles anywhere. By simultaneously capturing images from multiple angles, bubbles on the diaphragm 21 surface can be more accurately identified, minimizing the risk of missed detections.

[0076] The present invention automatically adjusts the height of the cover 41 through a height adjustment mechanism, ensuring that the cleaning sponge 5 maintains close contact with the surface of the screen film 21 of varying thicknesses. As the screen 2 is transported, the cleaning sponge 5 wipes the surface of the screen film 21 and cooperates with the dust collection component 6 to regularly clean itself, removing dust and fine particles. This ensures that the image acquisition module 42 captures clear images and prevents misjudgments.

[0077] As the screen 2 completely enters the cover 41, the cover 41 is pressed down so that the rubber ring 411 is in close contact with the movable plate 31 to form a sealed space, preventing external dust from entering the detection area, providing a stable environment for image acquisition, and improving the accuracy of bubble detection.

[0078] The above embodiments merely represent one or more embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, and such modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the appended claims.

Claims

1. A bubble detection device for film-attaching an OLED display screen, comprising a frame (1), the frame (1) being provided with a conveying mechanism (3) for conveying a screen (2) and a detection mechanism (4) for detecting bubbles in a screen film (21) attached to the surface of the screen (2); It is characterized in that The detection mechanism (4) comprises a cover (41) and an image acquisition module (42) arranged in the cover (41); a cleaning sponge (5) is provided at the bottom of the cover (41) for removing dust from the surface of the screen film (21) when the screen (2) passes by; the cleaning sponge (5) is located on one side of the cover (41) along the conveying direction of the conveying mechanism (3); A dust collecting assembly (6) for cleaning the cleaning sponge (5) is provided on the other side of the cover (41) facing the cleaning sponge (5); the cleaning sponge (5) is movable on the cover (41); and a driving assembly for driving the cleaning sponge (5) into the dust collecting assembly (6) is also provided on the cover (41); The frame (1) is provided with a height adjustment mechanism for adjusting the height of the cover (41) according to the thickness of the screen (2) so that the cleaning sponge (5) can contact the surface of the screen film (21); When the screen body (2) passes through the cleaning sponge (5) under the drive of the conveying mechanism (3), the surface of the screen film (21) is in a state of being wiped by the cleaning sponge (5), so that the image acquisition module (42) can accurately detect bubbles on the screen body (2) entering the cover body (41).

2. The bubble detection device for OLED display screen film according to claim 1, characterized in that: A rubber ring (411) is provided at the bottom of the cover body (41) along its circumferential direction, and the conveying mechanism (3) has a movable plate (31) for placing the screen body (2). When the screen body (2) moves toward the cover body (41), the cleaning sponge (5) contacts the screen film (21), and a gap is left between the rubber ring (411) and the screen film (21). When the screen body (2) completely enters the cover body (41), the rubber ring (411) contacts the movable plate (31), and a sealed space is formed between the cover body (41) and the movable plate (31). At the same time, the cleaning sponge (5) is squeezed on the movable plate (31) and fits the outer wall of the rubber ring (411), so that outside air and dust on the cleaning sponge (5) cannot enter the sealed space through the rubber ring (411).

3. The bubble detection device for OLED display screen film according to claim 2, characterized in that: The center of the cover body (41) is provided with a shaft (412) extending into the interior thereof. The shaft (412) has a negative pressure channel (4121) extending from top to bottom along its axial direction. The lower half of the shaft (412) is provided with a plurality of air extraction holes (4122) along its circumferential direction. The cover body (41) is provided with a plurality of air holes (4123) along its circumferential direction. A dustproof net (413) is provided on the inner wall of the cover body (41) at positions corresponding to the air holes (4123).

4. The bubble detection device for OLED display screen film according to claim 3, characterized in that: An annular airbag (43) is provided inside the cover (41) and below the image acquisition module (42). An inflation cavity (431) is formed between the annular airbag (43) and the cover (41). The cover (41) has an inflation port (432) communicating with the inflation cavity (431). When the rubber ring (411) is not in contact with the movable plate (31), the annular airbag (43) is in an inflated state. At this time, the annular airbag (43) serves as a barrier structure for preventing dust from adhering to the image acquisition module (42).

5. The bubble detection device for OLED display screen film according to claim 1, characterized in that: A photoelectric sensor (11) is provided on the frame (1) at a position corresponding to the center of the cover (41), and a reflective portion (311) capable of passing through the photoelectric sensor (11) is provided on the central edge of the movable plate (31). When the photoelectric sensor (11) detects the reflective portion (311), the conveying mechanism (3) is in a stopped state, and at this time, the screen (2) placed on the movable plate (31) has completely stopped inside the cover (41).

6. The bubble detection device for OLED display screen film according to claim 3, characterized in that: The height adjustment mechanism comprises a lifting plate (12) and a lifting driver for driving the lifting plate (12) to move up and down; the cover (41) is rotatably arranged on the lifting plate (12); the lifting plate (12) is provided with a driving assembly for driving a shaft (412) so as to rotate together with the cover (41); the lifting plate (12) has an annular step (121) sleeved on the cover (41); a bearing (122) is provided between the cover (41) and the annular step (121); the dust collection assembly (6) is provided on the annular step (121); when the cover (41) rotates relative to the annular step (121) so that the cleaning sponge (5) passes through the dust collection assembly (6), the cleaning sponge (5) is in a cleaned state.

7. The bubble detection device for OLED display screen film according to claim 6, characterized in that: A plurality of the cleaning sponges (5) are evenly distributed on the cover body (41) along its circumferential direction. When a cleaning sponge (5) enters the dust collection assembly (6), there is always a cleaning sponge (5) in a working state on the side of the screen body (2) being conveyed, so that the screen body (2) is wiped by the cleaning sponge (5) before it completely enters the cover body (41).

8. The bubble detection device for OLED display screen film according to claim 7, characterized in that: The dust collection assembly (6) comprises a dust collection bin body (61) and a dust collection pipe (62) arranged on the dust collection bin body (61). The dust collection pipe (62) is located at a position on the dust collection bin body (61) where it can come into contact with the cleaning sponge (5). The dust collection pipe (62) is provided with a plurality of dust collection ports (621). When the cover body (41) rotates so that the cleaning sponge (5) passes through the dust collection bin body (61), the cleaning sponge (5) enters between the dust collection bin body (61) and the cover body (41), and at the same time comes into contact with the dust collection pipe (62) and is in a squeezed state.

9. The bubble detection device for OLED display screen film according to claim 3, characterized in that: A light source (421) for illuminating the interior of the cover body (41) is provided at the lower end of the shaft member (412).

10. The bubble detection device for OLED display screen film according to claim 9, characterized in that: A plurality of image acquisition modules (42) are arranged inside the cover (41) around the shaft (412).

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