Laminating appearance detection machine and detection method thereof

Abstract

The invention discloses a fitting appearance detection machine and a detection method thereof. The fitting appearance detection machine comprises a feeding module; the film tearing device is used for tearing a protective film on the display screen, and the film tearing device comprises a film tearing platform, a film tearing mechanism and a code scanning assembly used for conducting code scanning on the display screen; the cleaning device is used for removing stains attached to the surface of the display screen, and the cleaning mechanism comprises a cleaning platform and a cleaning mechanism body used for cleaning the display screen; the detection device is used for detecting the display screen, and the detection device comprises a detection platform and an AOI detector used for detecting an AOI image of the display screen; the film covering device is used for attaching a protective film to the display screen, and the film covering device comprises a film covering platform and a film covering mechanism; the protective film carrying device is used for carrying the protective film torn from the film tearing device; and a discharging module. The problems that in the detection process of existing display screen detection equipment, the false detection rate is high and the efficiency is low due to stains on the surface of a display screen and manual operation are solved.

Description

Technical Field

[0001] The present invention relates to the field of AOI detection technology, and in particular to a bonding appearance detection machine and a detection method thereof. Background Art

[0002] With the development of science and technology, electronic terminal devices are developing rapidly, such as mobile phones, tablets, smart wearable devices, etc. The displays of mid-end electronic devices usually need to be installed with display screens. During the production process of display screens, relevant tests need to be carried out to meet the discharge standards, such as AOI testing, etc. In the traditional testing process, the products to be tested are loaded and tested by the AOI detector, and the qualified products and unqualified products are unloaded separately, and then the film is applied manually, which is inefficient. In addition, errors are prone to occur in the traditional testing process. For example, when there are stains, grease, dust and other pollutants on the surface of the display screen, it will interfere with the test results of the AOI detector and cause misjudgment. Summary of the invention

[0003] The main purpose of the present invention is to provide a bonding appearance inspection machine and an inspection method thereof, aiming to solve the problems of high false detection rate and low efficiency caused by stains on the surface of the display screen and manual operation during the inspection process of the existing display screen inspection equipment.

[0004] To achieve the above object, the present invention provides a bonding appearance inspection machine, comprising: A loading module, used for loading the display screen; A film-tearing device, used to tear off the protective film on the display screen, the film-tearing device comprises a film-tearing platform for placing the display screen, a film-tearing mechanism for tearing the film, and a code scanning component for scanning the display screen; A cleaning device for removing stains attached to the surface of a display screen, wherein the cleaning mechanism comprises a cleaning platform for placing the display screen and a cleaning mechanism for cleaning the display screen; A detection device, used to detect the display screen, the detection device comprising a detection platform for placing the display screen, and an AOI detector for AOI image detection of the display screen; A protective film transporting device, used for transporting the protective film torn off from the film tearing device; A laminating device, used for attaching a protective film to a display screen, the laminating device comprising a laminating platform for placing the display screen, and a laminating mechanism for attaching the protective film to the display screen; The discharging module is used for unloading display screens, and includes an OK belt and an NG belt. The OK belt line is used for unloading display screens that have passed the inspection, and the NG belt line is used for unloading display screens that have failed the inspection.

[0005] Optionally, the feeding module includes a feeding belt, a first conveying mechanism, a correction platform and a second conveying mechanism, the first conveying mechanism is used to convey the display screen on the feeding belt to the correction platform, the correction platform is used to position and correct the display screen, and the second conveying mechanism is used to convey the display screen on the correction platform to the film tearing platform.

[0006] Optionally, the film tearing mechanism further includes a fourth driving member, a fifth driving member is slidably arranged on the fourth driving member, a first roller is connected to the fifth driving member, and the fifth driving member is used to drive the first roller to move up and down to tear off the protective film on the display screen.

[0007] Optionally, the code scanning component includes a code scanning bracket and a scanning terminal installed on the code scanning bracket, and the scanning terminal is located above the film tearing platform and scans the code on the display screen.

[0008] Optionally, the cleaning device also includes a third conveying mechanism and a fourth conveying mechanism, the cleaning mechanism is located between the third conveying mechanism and the fourth conveying mechanism, the third conveying mechanism is used to convey the display screen on the film tearing platform to the cleaning platform, and the fourth conveying mechanism is used to convey the display screen cleaned on the cleaning platform to the detection platform; the cleaning mechanism includes a mounting plate, one side of the mounting plate is provided with a cloth collecting module, a cloth placing module, a locking drive component, a wiping module, a fourth suction cup group and a spray valve, the fourth suction cup group is used to adsorb the display screen on the cleaning platform, a dust-free cloth is wound around the cloth collecting module, the cloth placing module and the locking drive component, an alcohol tank is provided on the other side of the mounting plate, the alcohol tank is connected to the spray valve and sprays alcohol on the dust-free cloth, the wiping module is located on one side of the spray valve, and the wiping module is used to drive the dust-free cloth to reciprocate to wipe the display screen.

[0009] Optionally, the wiping module includes a fourth lifting cylinder, a shaking motor and a wiping head, the fourth lifting cylinder is connected to the wiping head, the fourth lifting cylinder is used to drive the wiping head to perform lifting motion, the shaking motor is connected to the wiping head, the shaking motor is used to drive the wiping head to drive the dust-free cloth to reciprocate on the display screen.

[0010] Optionally, the laminating device also includes a fifth conveying mechanism, which is used to convey the display screen on the detection platform to the laminating platform; the laminating mechanism includes an alignment platform, a first camera, a second camera and an attaching component, the first camera is located above the alignment platform and takes pictures to locate the position of the protective film on the alignment platform, the second camera is used to locate the position of the display screen on the laminating platform, and the attaching component is used to adhere the protective film to the surface of the display screen.

[0011] Optionally, the protective film conveying device includes a first protective film conveying mechanism and a second protective film conveying mechanism, the first protective film conveying mechanism is used to grab the protective film torn off from the film tearing device, and the second protective film conveying mechanism is used to convey the protective film grabbed by the first protective film conveying mechanism to the alignment platform.

[0012] Optionally, the AOI detector includes a mounting frame, a detection camera and a light source angle adjustment knob, the detection camera is mounted on the mounting frame, the detection camera is located above the detection platform, and the light source angle adjustment knob is used to adjust the position of the light source.

[0013] To achieve the above object, the present invention further proposes a detection method for a bonding appearance detection machine, using any of the above-mentioned bonding appearance detection machines, comprising the following steps: The loading module conveys and loads the display screen; The film-tearing device scans the display screen conveyed by the feeding module and tears off the protective film on the display screen; The protective film conveying mechanism grabs the torn protective film from the film tearing device and conveys it to the laminating device; The cleaning device cleans the display screen from which the protective film has been torn off, and transports the cleaned display screen to the inspection platform; The AOI detector of the detection device detects the cleaned display screen and determines whether the display screen is qualified; If the display screen passes the inspection, the laminating device will transport the qualified display screen to the laminating platform, attach the protective film to the display screen, and then transport it to the OK belt line of the discharging module for unloading; if the display screen fails the inspection, the laminating device will transport the unqualified display screen to the laminating platform, attach the protective film to the display screen, and then transport it to the NG belt line of the discharging module for unloading.

[0014] The beneficial effects of the present invention are as follows: the structure of the existing display screen detection equipment is improved, a cleaning device is added to the detection machine, the surface of the display screen can be cleaned before AOI detection, stains, grease, dust and other pollutants are effectively removed, and the detection accuracy is improved; a laminating device is added to the detection machine, the display screen can be automatically laminarized after the AOI detection is completed, thereby improving the overall production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention for bonding appearance detection; Figure 2 It is a top view of the present invention for bonding appearance inspection; Figure 3 It is a structural schematic diagram of the feeding belt of the present invention; Figure 4 It is a structural schematic diagram of the first transport mechanism of the present invention; Figure 5 It is a structural schematic diagram of the correction platform of the present invention; Figure 6 is a structural schematic diagram of the second transport mechanism of the present invention; Figure 7 It is a structural schematic diagram of the film tearing device of the present invention; Figure 8 It is a structural schematic diagram of the cleaning mechanism of the present invention; Fig. 9 It is a structural schematic diagram of the wiping module of the present invention; Fig.10 is a schematic structural diagram of the third transport mechanism of the present invention; Fig.11 is a schematic structural diagram of a fourth transport mechanism of the present invention; Fig.12 It is a structural schematic diagram of the AOI detector of the present invention; Fig.13 It is a structural schematic diagram of the first protective film conveying mechanism of the present invention; Fig.14 It is a structural schematic diagram of the second protective film conveying mechanism of the present invention; Fig.15 is a schematic structural diagram of a fifth transport mechanism of the present invention; Fig.16 It is a structural schematic diagram of the laminating mechanism of the present invention; Fig.17 is a schematic structural diagram of a sixth transport mechanism of the present invention; Fig.18 It is a structural schematic diagram of the discharging module of the present invention; Description of labels: 1. Feeding module; 11. Feeding belt; 111. Anti-stack optical fiber; 112. Alignment assembly; 1121. Alignment cylinder; 1122. Guide rail slider mechanism; 1123. First alignment push rod; 12. First transport mechanism; 113. First positioning cylinder; 121. First suction cup group; 122. First driving member; 123. Second driving member; 124. First rotating cylinder; 13. Correction platform; 131. Vacuum adsorption plate; 132. Second positioning cylinder; 133. Vacuum pressure regulating valve; 14. Second transport mechanism; 141. Second suction cup group; 142. First lifting cylinder; 143. Third driving member; 2. Film-tearing device; 21. Film-tearing mechanism; 211. Fourth driving member; 212. Fifth driving member; 213. First roller; 214. Barcode scanning component; 2141. Barcode scanning bracket; 2142. Scanning dock; 22. Film-tearing platform; 215. Rotating mechanism; 3. Cleaning device; 31. Third transport mechanism; 311. Sixth drive member; 312. Seventh drive member; 313. Third suction cup group; 32. Cleaning mechanism; 321. Mounting plate; 322. Cloth collecting module; 323. Cloth placing module; 324. Locking drive member; 325. Wiping module; 3251. Fourth lifting cylinder; 3252. Shaking motor; 3253. Wiping head; 326. Fourth suction cup group; 327. Spray valve; 328. Alcohol tank; 33. Cleaning platform; 34. Fourth transport mechanism; 341. Eighth drive member; 342. Fifth lifting cylinder; 343. Fifth suction cup group; 4. Detection device; 41. AOI detector; 411. Detection camera; 412. Light source angle adjustment knob; 42. Detection platform; 5. Protective film transport device; 51. First protective film transport mechanism; 511. Ninth driving member; 512. Protective film adsorption platform; 513. Film pressing assembly; 5131. Pressing cylinder; 5132. Pressing plate; 52. Second protective film transport mechanism; 521. Tenth driving member; 522. Sixth suction cup group; 523. Sixth lifting cylinder; 524. Transfer transport platform; 6. Laminating device; 61. Fifth transport mechanism; 611. Eighth lifting cylinder; 612. Eighth suction cup group; 62. Laminating mechanism; 63. Alignment platform; 64. First camera; 65. Second camera; 66. Attachment assembly; 661. Eleventh driving member; 662. Second rotating cylinder; 663. Seventh lifting cylinder; 664. Seventh suction cup group; 665. Second roller; 67. Light source; 68. Laminating platform; 7. Discharging module; 71. Sixth transport mechanism; 711. Twelfth driving member; 712. Ninth suction cup group; 713. Third rotating cylinder; 72. OK belt; 73. NG belt; The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0019] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0020] One embodiment of the present invention provides a bonding appearance inspection machine, referring to Figure 1-18 ,include: A loading module 1 is used for loading the display screen; A film-tearing device 2, used to tear off the protective film on the display screen, the film-tearing device 2 comprises a film-tearing platform 22 for placing the display screen, a film-tearing mechanism 21 for tearing the film, and a code scanning component 214 for scanning the display screen; A cleaning device 3, used to remove stains attached to the surface of the display screen, wherein the cleaning mechanism 32 comprises a cleaning platform 33 for placing the display screen and a cleaning mechanism 32 for cleaning the display screen; A detection device 4, used for detecting the display screen, the detection device 4 comprises a detection platform 42 for placing the display screen, and an AOI detector 41 for AOI image detection of the display screen; A laminating device 6, used for attaching a protective film to the display screen, the laminating device 6 comprising a laminating platform for placing the display screen, and a laminating mechanism 62 for attaching the protective film to the display screen; A protective film transporting device 5, used for transporting the protective film torn off from the film tearing device 2; The discharging module 7 is used for discharging display screens, and includes an OK belt 72 and an NG belt 73. The OK belt 72 line is used for discharging display screens that have passed the inspection, and the NG belt 73 line is used for discharging display screens that have failed the inspection.

[0021] The present embodiment improves the structure of the existing display screen detection equipment. A cleaning device 3 is added to the detection machine, which can clean the surface of the display screen before AOI detection, effectively remove pollutants such as stains, grease and dust, and improve the accuracy of detection. A coating device 6 is added to the detection machine, which can automatically coat the display screen after AOI detection, thereby improving the overall production efficiency.

[0022] In this embodiment, the film tearing platform 22, cleaning platform 33, detection platform 42 and coating platform are respectively arranged on an electrode screw driving module, and the film tearing platform 22, cleaning platform 33, detection platform 42 and coating platform all move linearly along the motion trajectory of the electrode screw driving module.

[0023] Furthermore, the feeding module 1 includes a feeding belt 11, a first conveying mechanism 12, a correction platform 13 and a second conveying mechanism 14. The feeding belt 11 is adjacent to the correction platform 13 and transports the screen. The first conveying mechanism 12 is used to convey the display screen on the feeding belt 11 to the correction platform 13. The correction platform 13 is used to position and correct the display screen. The second conveying mechanism 14 is used to convey the display screen on the correction platform 13 to the film tearing platform 22.

[0024] Specifically, the feeding belt 11 is provided with a first positioning cylinder 113 for positioning the display screen, the first positioning cylinder 113 is arranged at the tail end of the feeding belt 11, the first positioning cylinder 113 is installed with a sensor for detecting the display screen, the feeding belt 11 is installed with an anti-stacking optical fiber 111 for real-time monitoring of the stacking situation of the display screen on the belt line, the feeding belt 11 is installed with an alignment component 112 for aligning the display screen, the alignment component 112 is provided with an alignment cylinder 1121, the driving direction of the alignment cylinder 1121 is perpendicular to the conveying direction of the feeding belt 11, the driving end of the alignment cylinder 1121 is connected to a first alignment push rod 1123 for pushing the display screen, and the first alignment push rod 1123 is installed on a guide rail slider mechanism 1122.

[0025] In this embodiment, the feeding belt 11 adopts a belt line conveying mechanism commonly used in the prior art. The feeding belt 11 is driven by a motor to rotate, and the display screen is placed on the belt line for conveyance. An anti-stacking optical fiber 111 is installed on the feeding belt 11, which can be used to monitor the stacking of the display screens on the belt line in real time to prevent multiple display screens from overlapping. When the anti-stacking optical fiber 111 detects a signal, the display screen cannot be placed on the feeding belt 11; it should be noted that a first positioning cylinder 113 is provided at the tail end of the belt line conveyor to ensure that the display screen reaches the target position. The first positioning cylinder 113 is provided The sensor is used to monitor the arrival of the display screen in real time. When it is detected that the display screen has reached the predetermined position, a signal is sent to the control system, which issues a command to control the drive motor to stop working and issues a command to control the driving end of the alignment cylinder 1121 to contract, thereby driving the first alignment push rod 1123 to move and push the display screen to a fixed position. Since the alignment cylinder 1121 is fixed, it can ensure that each display screen on the feeding belt 11 conveyor line is pushed to a fixed position before being taken away, so that the material picking position of the first transport mechanism 12 is fixed, which can save the alignment process and improve the feeding efficiency.

[0026] Specifically, the first conveying mechanism 12 includes a first suction cup group 121 for adsorbing the display screen, a first driving member 122 for driving the first suction cup group 121 to rise and fall, a second driving member 123 for driving the first suction cup group 121 to move along a conveying direction perpendicular to the feeding belt 11, and a first rotating cylinder 124 for driving the first suction cup group 121 to rotate.

[0027] In this embodiment, the first suction cup group 121 includes a plurality of vacuum suction cups, which can generate vacuum suction by connecting a vacuum suction device, suck up and carry the display screen, and when unloading, turn off the vacuum suction to put down the display screen. The first rotary cylinder 124 is installed on the first suction cup group 121, and is used to drive the first suction cup group 121 to rotate, so that the display screen adsorbed on the first suction cup group 121 is placed in the same position as the correction platform 13. The first driving member 122 and the second driving member 123 in this embodiment are both composed of a motor, a synchronous belt and a moving shaft, which can drive the first suction cup group 121 to move in a linear direction, wherein the first driving member 122 is installed at the driving end of the second driving member 123, and the first suction cup group 121 is installed at the driving end of the first driving member 122, so as to realize the displacement of the first suction cup group 121 in the horizontal direction and the vertical direction, so as to carry the display screen on the feeding belt 11 to the correction platform 13.

[0028] Specifically, a plurality of vacuum adsorption plates 131 for adsorbing the display screen are disposed on the correction platform 13 , and the vacuum adsorption plates 131 are connected to vacuum pressure regulating valves 133 . A second positioning cylinder 132 for correcting the position of the display screen is disposed below the correction platform 13 .

[0029] In this embodiment, the correction platform 13 is provided with two positions for placing display screens, so as to facilitate the correction of two display screens at the same time. The vacuum pressure regulating valve 133 provides suction for the vacuum adsorption plate 131, so that the display screen is firmly adsorbed on the correction platform 13. The second positioning cylinder 132 pushes the display screen to a fixed position by receiving instructions from the control system, thereby ensuring that the display screen on the correction platform 13 is pushed to a fixed position before being taken away, so that the material picking position of the second conveying mechanism 14 is fixed, which can save the alignment process and improve the loading efficiency.

[0030] Specifically, the second transport mechanism 14 includes a second suction cup group 141 for adsorbing the display screen, a first lifting cylinder 142 for driving the second suction cup group 141 to move up and down, and a third driving member 143 for driving the second suction cup group 141 to move along the conveying direction of the correction platform 13.

[0031] In this embodiment, the second suction cup group 141 is set as two groups, which can carry two display screens at the same time, thereby improving the carrying efficiency. After the correction platform 13 completes the correction of the display screen position, the third driving member 143 drives the first lifting cylinder 142 and the second suction cup group 141 to move above the correction platform 13, the first lifting cylinder 142 drives the second suction cup group 141 to move downward, so that the second suction cup group 141 adsorbs the display screen, the first lifting cylinder 142 drives the second suction cup group 141 to move linearly, the third driving member 143 moves to the film tearing platform 22, the first lifting cylinder 142 drives the second suction cup group 141 to move downward again, and the display screen is placed on the film tearing platform 22. The third driving member 143 in this embodiment is composed of a motor, a synchronous belt and a moving shaft, which can drive the second suction cup group 141 to move in a linear direction.

[0032] Furthermore, the film tearing mechanism 21 also includes a fourth driving member 211, on which a fifth driving member 212 is slidably provided, and on which a first roller 213 is connected, the fifth driving member 212 is used to drive the first roller 213 to move up and down to tear off the protective film on the display screen.

[0033] In this embodiment, the film-tearing platform 22 is displaced in a linear direction through a moving shaft, and the moving shaft is composed of a moving shaft, a motor and a synchronous belt. The first roller 213 is installed at the driving end of the fifth driving member 212. When the display screen is transported to the bottom of the first roller 213 through the film-tearing platform 22, the fifth driving member 212 drives the first roller 213 to descend, and the first roller 213 sticks to one end of the protective film. At this time, the fifth driving member 212 changes the driving direction and drives the first roller 213 to rise. During the rising process, since the adhesion between the first roller 213 and the protective film is greater than the adhesion between the protective film and the display screen, the protective film will be gradually torn off the display screen by the first roller 213. Furthermore, a rotating mechanism 215 for driving the first roller 213 to rotate is additionally provided between the fifth driving member 212 and the first roller 213. The rotating mechanism 215 includes a rotating motor. The driving end of the rotating motor drives the first roller 213 to rotate through a transmission mechanism. When the fifth driving member 212 drives the first roller 213 to rise, the rotating motor starts, driving the first roller 213 to rise and rotate at the same time, thereby smoothly tearing the protective film from the surface of the display screen, making the force on the protective film more uniform, and preventing the protective film from being deformed due to excessive force, which makes the protective film unusable. In this embodiment, the fourth driving member is a motor screw drive module in the prior art, and the fifth driving member is composed of a moving shaft, a motor and a synchronous belt.

[0034] Furthermore, the code scanning component 214 includes a code scanning bracket 2141 and a scanning dock 2142 installed on the code scanning bracket 2141. The scanning dock 2142 is located above the film tearing platform 22 and scans the display screen.

[0035] In this embodiment, when the display screen on the film tearing platform 22 moves to below the scanning terminal 2142, the scanning terminal 2142 scans the display screen for detection. After the detection is completed, the film tearing platform 22 continues to move forward to the film tearing mechanism 21 to tear the film.

[0036] Furthermore, the cleaning device 3 further includes a third conveying mechanism 31 and a fourth conveying mechanism 34, the cleaning mechanism 32 is located between the third conveying mechanism 31 and the fourth conveying mechanism 34, the third conveying mechanism 31 is used to convey the display screen on the film tearing platform 22 to the cleaning platform 33, and the fourth conveying mechanism 34 is used to convey the cleaned display screen on the cleaning platform 33 to the detection platform 42; The third transport mechanism 31 includes a sixth driving member 311, a seventh driving member 312 and a third suction cup group 313. The seventh driving member 312 includes a second lifting cylinder and a variable pitch cylinder. The sixth driving member is composed of a moving shaft, a motor and a synchronous belt. The third suction cup group 313 is arranged at the driving end of the variable pitch cylinder. The second lifting cylinder is connected to the variable pitch cylinder through a connecting plate. When the display screen reaches the material taking position of the third transport mechanism 31 along the film tearing platform 22, the sixth driving member 311 drives the second lifting cylinder and the third suction cup group 313 to move above the film tearing platform 22. The second lifting cylinder drives the third suction cup group 313 to move downward, so that the third suction cup group 313 absorbs the display screen. The second lifting cylinder drives the third suction cup group 313 to move upward. The sixth driving member 311 moves to the cleaning platform 33. The second lifting cylinder drives the third suction cup group 313 to move downward again. The third suction cup group 313 places the display screen on the cleaning platform 33.

[0037] The cleaning mechanism 32 includes a mounting plate 321, and one side of the mounting plate 321 is provided with a cloth collecting module 322, a cloth placing module 323, a locking drive member 324, a wiping module 325, a fourth suction cup group 326 and a spray valve 327. The fourth suction cup group 326 is used to adsorb the display screen on the cleaning platform 33 to prevent it from moving or slipping during the cleaning process. A dust-free cloth is wound around the cloth collecting module 322, the cloth placing module 323 and the locking drive member 324. The other side of the mounting plate 321 is provided with an alcohol tank 328, and the alcohol tank 328 is connected to the spray valve 327 and sprays alcohol on the dust-free cloth. The wiping module 325 is located on one side of the spray valve 327, and the wiping module 325 is used to drive the dust-free cloth to reciprocate to wipe the display screen.

[0038] The cleaning platform 33 is displaced in a linear direction through a moving axis, and the moving axis is composed of a moving axis, a motor and a synchronous belt. A correction cylinder is also provided under the cleaning platform 33 to correct the position of the display screen on the cleaning platform 33, so as to facilitate the fourth suction cup group 326 to grasp the display screen on the cleaning platform 33 and prevent grasping failure due to inaccurate position.

[0039] In this embodiment, the fourth suction cup group 326 is provided with a third lifting cylinder, and the third lifting cylinder is used to drive the fourth suction cup group 326 to rise and fall. The mounting plate 321 is provided with a plurality of support rollers. The dust-free cloth is wound around the cloth collecting module 322, the cloth releasing module 323 and the locking drive 324, and is wound around the support rollers to form a continuous cloth belt, wherein the locking drive 324 is used to tension and lock the dust-free cloth to ensure the stability of the dust-free cloth.

[0040] Furthermore, the wiping module 325 is provided with two groups, and the wiping module 325 includes a fourth lifting cylinder 3251, a shaking motor 3252 and a wiping head 3253. The fourth lifting cylinder 3251 is connected to the wiping head 3253, and the fourth lifting cylinder 3251 is used to drive the wiping head 3253 to perform lifting motion. The shaking motor 3252 is connected to the wiping head 3253, and the shaking motor 3252 is used to drive the wiping head 3253 to drive the dust-free cloth to reciprocate on the display screen.

[0041] Specifically, the working principle of the cleaning mechanism 32 is as follows: when the cleaning platform 33 moves the cleaning position of the first group of wiping modules 325 of the cleaning mechanism 32, the alcohol in the alcohol tank 328 is transported to the spray valve 327 through a pipeline, and the alcohol is evenly sprayed on the dust-free cloth. After the spraying is completed, the fourth lifting cylinder 3251 drives the wiping head 3253 to descend, so that the wiping head 3253 contacts the dust-free cloth and drives the dust-free cloth to move downward. At this time, the shaking motor 3252 drives the wiping head 3253 to drive the dust-free cloth to reciprocate on the display screen to wipe the surface of the display screen. At this time, the cleaning platform 33 continues to move forward, and the first group of display screens moves to the cleaning position of the second group of wiping modules 325. The second group of wiping modules 325 repeats the above actions to further wipe the first group of display screens. At the same time, the second group of display screens arrives at the cleaning position of the first group of wiping modules 325 along the cleaning platform 33, and the first group of wiping modules 325 wipe the second group The display screen is wiped. When the second wiping module 325 wipes the first display screen, the cleaning platform 33 continues to move forward, driving the first display screen to move to the material picking position of the fourth transport mechanism 34. At the same time, the second display screen moves to the adsorption position of the fourth suction cup group 326. The third lifting cylinder drives the fourth suction cup group 326 to move downward, so that the fourth suction cup group 326 adsorbs the second display screen. The third lifting cylinder drives the fourth suction cup group 326 to move upward. When the fourth transport mechanism 34 transports the first display screen and leaves the cleaning platform 33, the cleaning platform 33 moves in the opposite direction to the third transport mechanism 31. At this time, the third lifting cylinder drives the fourth suction cup group 326 to move downward again. The fourth suction cup group 326 places the second display screen on the cleaning platform 33. The cleaning platform 33 drives the second display screen to move forward to the cleaning position of the second wiping module 325. The second wiping module 325 wipes the second display screen. At the same time, the next display screen on the cleaning platform 33 is also cleaned and transported according to the same process. The dust-free cloth, when soaked in alcohol, can remove stains more effectively without scratching or damaging the display screen surface. During the wiping process, the dust-free cloth is continuously released from the cloth-releasing module 323, guided by the support roller, and finally recovered by the cloth-collecting module 322. In this way, the dust-free cloth can be kept clean and moist during the wiping process, thereby improving the cleaning effect.

[0042] The fourth transport mechanism 34 includes an eighth driving member 341, a fifth lifting cylinder 342 and a fifth suction cup group 343. When the display screen is cleaned and reaches the material picking position of the fourth transport mechanism 34, the eighth driving member 341 drives the fifth lifting cylinder 342 and the fifth suction cup group 343 to move above the cleaning platform 33, the fifth lifting cylinder 342 drives the fifth suction cup group 343 to move downward, so that the fifth suction cup group 343 adsorbs the display screen, the fifth lifting cylinder 342 drives the fifth suction cup group 343 to move upward, the eighth driving member 341 moves to the detection platform 42, the fifth lifting cylinder 342 drives the fifth suction cup group 343 to move downward again, and the fifth suction cup group 343 places the display screen on the detection platform 42. In this embodiment, the eighth driving member is composed of a moving shaft, a motor and a synchronous belt.

[0043] Furthermore, the coating device 6 also includes a fifth conveying mechanism 61, which is used to convey the display screen on the detection platform 42 to the coating platform; the coating mechanism 62 includes an alignment platform 63, a first camera 64, a second camera 65 and an attaching component 66, the first camera 64 is located above the alignment platform 63 and takes pictures to locate the position of the protective film on the alignment platform 63, the second camera 65 is used to locate the position of the display screen on the coating platform, and the attaching component 66 is used to adhere the protective film to the surface of the display screen.

[0044] The attaching assembly 66 includes an eleventh driving member 661, a second rotating cylinder 662, a seventh lifting cylinder 663, a seventh suction cup group 664 and a second roller 665. The eleventh driving member 661 includes an X-motion screw rod, a Y-motion screw rod, a Z-motion screw rod and a servo motor. The servo motor drives the seventh suction cup group 664 to move along the X-motion screw rod, the Y-motion screw rod and the Z-motion screw rod. The second rotating cylinder 662 can drive the seventh suction cup group 664 to rotate, thereby changing the orientation of the display screen. The second roller 665 is connected to the driving end of the seventh lifting cylinder 663. The seventh lifting cylinder 663 is used to drive the second roller 665 to rise and fall, so as to ensure that the protective film can be completely and evenly attached to the display screen.

[0045] The coating platform 68 is displaced in a linear direction via a moving axis, which is composed of a movable axis, a motor and a synchronous belt. In the present embodiment, light sources 67 are provided around the alignment platform 63 and the coating platform. When the first camera 64 and the second camera 65 take pictures of the protective film and the display screen respectively, the light source 67 can illuminate the protective film on the alignment platform 63 and the display screen on the coating platform, so that the shooting result is more accurate.

[0046] The fifth transport mechanism 61 includes an eighth lifting cylinder 611 and an eighth suction cup group 612, and the eighth suction cup group 612 is installed at the driving end of the eighth lifting cylinder 611. When the display screen detection is completed and reaches the material picking position of the fifth transport mechanism 61, the eighth lifting cylinder 611 drives the eighth suction cup group 612 to move above the detection platform 42, and the eighth lifting cylinder 611 drives the eighth suction cup group 612 to move downward, so that the eighth suction cup group 612 adsorbs the display screen, and the eighth lifting cylinder 611 drives the eighth suction cup group 612 to move upward. When the coating platform moves to below the eighth suction cup group 612, the eighth lifting cylinder 611 drives the eighth suction cup group 612 to move downward again, and the eighth suction cup group 612 places the display screen on the coating platform.

[0047] Furthermore, the protective film conveying device 5 includes a first protective film conveying mechanism 51 and a second protective film conveying mechanism 52, wherein the first protective film conveying mechanism 51 is used to grab the protective film torn off from the film tearing device 2, and the second protective film conveying mechanism 52 is used to convey the protective film grabbed by the first protective film conveying mechanism 51 to the alignment platform 63.

[0048] The first protective film transport mechanism 51 includes a ninth driving member 511, a protective film adsorption platform 512 and a film pressing assembly 513. The protective film adsorption platform 512 is slidably arranged on the ninth driving member 511. The film pressing assembly 513 includes a clamping cylinder 5131 and a pressing plate 5132. The clamping cylinder 5131 is connected to the pressing plate 5132 and drives the pressing plate 5132 to approach or move away from the first protective film adsorption platform 512. When the ninth driving member 511 drives the protective film adsorption platform 512 to move below the film tearing mechanism 21, the clamping cylinder 5131 drives the pressing plate 5132 to approach the adsorption platform and press the protective film tightly on the platform. At this time, the ninth driving member 511 drives the protective film adsorption platform 512 to move away from the film tearing mechanism 21. As the protective film adsorption platform 512 moves, the protective film is peeled off from the film tearing mechanism 21 under the action of the pressing plate 5132. Through automatic transport, manual operations are reduced and production efficiency is improved. In this embodiment, the ninth driving member 511 is composed of a moving shaft, a motor and a synchronous belt.

[0049] The second protective film conveying mechanism 52 includes a tenth driving member 521, a sixth suction cup group 522, a sixth lifting cylinder 523 and a transfer conveying platform 524. The sixth suction cup group 522 is arranged in two groups. The tenth driving member 521 is used to drive the sixth lifting cylinder 523 and the sixth suction cup group 522 to move. When the display screen reaches the material picking position of the second protective film conveying mechanism 52, the tenth driving member 521 drives the sixth lifting cylinder 523 and the sixth suction cup group 522 to move above the protective film adsorption platform 512, and the sixth lifting cylinder 523 drives the sixth suction cup group 522 to move downward so that the sixth suction cup group 522 adsorbs the display screen. The sixth lifting cylinder 523 drives the sixth suction cup group 522 to move upward. 22 moves upward, the tenth driving member 521 drives one group of the sixth suction cup group 522 to move to the alignment platform 63, and the other group of the sixth suction cup group 522 moves to the transfer platform 524, and the sixth lifting cylinder 523 drives the sixth suction cup group 522 to move downward again, then one group of the sixth suction cup group 522 places the display screen on the alignment platform 63, and the other group of the sixth suction cup group 522 places the display screen on the transfer platform 524. When the second protective film conveying module conveys the display screen on the first protective film conveying mechanism 51 again, it can choose to absorb a new display screen from the first protective film conveying mechanism 51 or pick up the previously placed display screen from the transfer platform according to the instructions issued by the control system. In this embodiment, the tenth driving member 521 is composed of a moving shaft, a motor and a synchronous belt.

[0050] Furthermore, the AOI detector 41 includes a detection camera 411 and a light source angle adjustment knob 412 . The detection camera 411 is located above the detection platform 42 . The light source angle adjustment knob 412 is used to adjust the position of the light source 67 .

[0051] Specifically, the detection camera 411 can take a picture of the display screen for detection, compare it with the preset picture, and use the AOI detector 41 to determine whether the display screen to be detected has defects. If the similarity between the image of the component to be detected and the standard image is lower than the preset threshold, or some detection parameters do not meet the requirements, the AOI detector 41 will determine that the component is a defective product. The detection camera 411 adjusts different irradiation angles by turning the light source angle adjustment knob 412, so as to more accurately detect whether the screen has defects.

[0052] In this embodiment, the detection accuracy of the AOI detector 41 is 8K. When the point defect of the image captured in the display screen is greater than 0.06mm or the line defect W>0.02mm, L>0.5mm, the display screen is judged to be unqualified.

[0053] Further, the discharging module 7 includes a sixth conveying mechanism 71, an OK belt 72 and an NG belt 73, the sixth conveying mechanism 71 includes a twelfth driving member 711, a third rotating cylinder 713 and a ninth suction cup group 712, the twelfth driving member 711 includes a second X-motion screw rod, a second Y-motion screw rod, a second Z-motion screw rod and a servo motor, and the seventh suction cup group 664 is driven by the servo motor to move along the second X-motion screw rod, the second Y-motion screw rod and the second Z-motion screw rod, and the third rotating cylinder 713 can drive the ninth suction cup group 712 to rotate, thereby changing the orientation of the display screen. The sixth conveying mechanism 71 is used to move the display screen on the coating platform 68 and place it in the OK belt 72 or the NG belt 73 according to the detection structure, the OK belt 72 is used to unload the display screen that has passed the detection, and the NG belt 73 is used to unload the display screen that has failed the detection. Specifically, the OK belt 72 and the NG belt 73 are both driven by a driving motor, and both the OK belt 72 and the NG belt 73 are provided with an anti-stacking optical fiber 111, which is the same as the anti-stacking optical fiber 111 on the above-mentioned feeding belt 11 and is not described in detail here.

[0054] The present invention also provides a detection method for a bonding appearance detection machine, using the above-mentioned bonding appearance detection machine, comprising the following steps: The feeding module 1 conveys and feeds the display screen; The film-tearing device 2 scans the display screen delivered by the feeding module 1 and tears off the protective film on the display screen; The protective film conveying mechanism grabs the torn protective film from the film tearing device 2 and conveys it to the film laminating device 6; The cleaning device 3 cleans the display screen from which the protective film has been torn off, and transports the cleaned display screen to the inspection platform 42; The AOI detector 41 of the detection device 4 detects the cleaned display screen and determines whether the display screen is qualified; If the display screen passes the inspection, the laminating device 6 will transport the qualified display screen to the laminating platform, attach the protective film to the display screen, and then transport it to the OK belt 72 line of the discharging module 7 for unloading; if the display screen passes the inspection, the laminating device 6 will transport the unqualified display screen to the laminating platform, attach the protective film to the display screen, and then transport it to the NG belt 73 line of the discharging module 7 for unloading.

[0055] When the feeding module 1 is started, the display screen placed on the feeding belt 11 starts to move. When the display screen moves to the tail end of the feeding belt 11, the first conveying mechanism 12 conveys the display screen to the correction platform 13. The correction platform 13 corrects the position of the display screen, and the second conveying mechanism 14 conveys the screen on the correction platform 13 to the film tearing platform 22. The film tearing mechanism 21 tears off the protective film on the display screen through the first roller 213. When the protective film is completely torn off from the display screen, the sixth motor screw module is driven by the fifth motor screw module to move to the top of the protective film conveying device 5. The first protective film conveying mechanism 51 tears off the protective film on the first roller 213 through the clamping assembly and places it on the protective film adsorption platform 512, and conveys the protective film to the alignment platform 63 through the second protective film conveying mechanism 52. At the same time, the third conveying mechanism 31 tears off the protective film on the first roller 213. The display screen with the protective film torn off is transported to the cleaning platform 33, and the cleaning mechanism 32 cleans the display screen with the protective film torn off. After cleaning, it is transported to the inspection platform 42 by the fourth transport mechanism 34. The AOI detector 41 inspects the display screen through the inspection camera 411, compares it with the preset picture, and determines whether the display screen to be inspected has defects through the AOI detector 41, and divides it into qualified and unqualified display screens. When the inspection is completed, the inspected display screen is transported to the laminating platform by the fifth transport mechanism 61, and the laminating mechanism 62 attaches the protective film on the alignment platform 63 to the surface of the display screen on the laminating platform. After the attachment is completed, the sixth transport mechanism 71 places the display screen on the laminating platform according to the inspection result of the AOI detector 41. The qualified display screen is placed on the OK belt 72 and unloaded, and the unqualified display screen is placed on the NG belt 73 and unloaded.

[0056] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A bonding appearance inspection machine, characterized in that: include: A loading module, used for loading the display screen; A film-tearing device, used to tear off the protective film on the display screen, the film-tearing device comprises a film-tearing platform for placing the display screen, a film-tearing mechanism for tearing the film, and a code scanning component for scanning the display screen; A cleaning device for removing stains attached to the surface of a display screen, wherein the cleaning mechanism comprises a cleaning platform for placing the display screen and a cleaning mechanism for cleaning the display screen; A detection device, used to detect the display screen, the detection device comprising a detection platform for placing the display screen, and an AOI detector for AOI image detection of the display screen; A protective film transporting device, used for transporting the protective film torn off from the film tearing device; A laminating device, used for attaching a protective film to a display screen, the laminating device comprising a laminating platform for placing the display screen, and a laminating mechanism for attaching the protective film to the display screen; The discharging module is used for unloading the display screen, and comprises an OK belt and an NG belt. The OK belt is used for unloading the display screen that has passed the inspection, and the NG belt is used for unloading the display screen that has failed the inspection.

2. The lamination appearance inspection machine according to claim 1, characterized in that: The feeding module includes a feeding belt, a first conveying mechanism, a correction platform and a second conveying mechanism. The first conveying mechanism is used to convey the display screen on the feeding belt to the correction platform. The correction platform is used to position and correct the display screen. The second conveying mechanism is used to convey the display screen on the correction platform to the film tearing platform.

3. The lamination appearance inspection machine according to claim 1, characterized in that: The film tearing mechanism also includes a fourth driving member, on which a fifth driving member is slidably arranged, and on which a first roller is connected. The fourth driving member is used to drive the fifth driving member to move horizontally, and the fifth driving member is used to drive the first roller to move up and down to tear off the protective film on the display screen.

4. The lamination appearance inspection machine according to claim 1, characterized in that: The code scanning component includes a code scanning bracket and a scanning terminal installed on the code scanning bracket. The scanning terminal is located above the film tearing platform and scans the code on the display screen.

5. The lamination appearance inspection machine according to claim 1, characterized in that: The cleaning device also includes a third conveying mechanism and a fourth conveying mechanism, the cleaning mechanism is located between the third conveying mechanism and the fourth conveying mechanism, the third conveying mechanism is used to convey the display screen on the film tearing platform to the cleaning platform, and the fourth conveying mechanism is used to convey the display screen cleaned on the cleaning platform to the detection platform; the cleaning mechanism includes a mounting plate, one side of the mounting plate is provided with a cloth collecting module, a cloth placing module, a locking drive member, a wiping module, a fourth suction cup group and a spray valve, the fourth suction cup group is used to adsorb the display screen on the cleaning platform, a dust-free cloth is wound around the cloth collecting module, the cloth placing module and the locking drive member, an alcohol tank is provided on the other side of the mounting plate, the alcohol tank is connected to the spray valve and sprays alcohol on the dust-free cloth, the wiping module is located on one side of the spray valve, and the wiping module is used to drive the dust-free cloth to reciprocate to wipe the display screen.

6. The lamination appearance inspection machine according to claim 5, characterized in that: The wiping module includes a fourth lifting cylinder, a shaking motor and a wiping head. The fourth lifting cylinder is connected to the wiping head and is used to drive the wiping head to perform lifting motion. The shaking motor is connected to the wiping head and is used to drive the wiping head to drive the dust-free cloth to perform reciprocating motion on the display screen.

7. The lamination appearance inspection machine according to claim 1, characterized in that: The laminating device also includes a fifth transporting mechanism, which is used to transport the display screen on the detection platform to the laminating platform; the laminating mechanism includes an alignment platform, a first camera, a second camera and an attaching component, the first camera is located above the alignment platform and takes pictures to locate the position of the protective film on the alignment platform, the second camera is used to locate the position of the display screen on the laminating platform, and the attaching component is used to attach the protective film to the surface of the display screen.

8. The lamination appearance inspection machine according to claim 7, characterized in that: The protective film conveying device includes a first protective film conveying mechanism and a second protective film conveying mechanism. The first protective film conveying mechanism is used to grab the protective film torn off from the film tearing device, and the second protective film conveying mechanism is used to convey the protective film grabbed by the first protective film conveying mechanism to the alignment platform.

9. The lamination appearance inspection machine according to claim 1, characterized in that: The AOI detector comprises a detection camera and a light source angle adjustment knob, wherein the detection camera is located above the detection platform, and the light source angle adjustment knob is used to adjust the position of the light source.

10. A detection method for a bonding appearance detection machine, characterized in that: The bonding appearance inspection machine according to any one of claims 1 to 9 is used, comprising the following steps: The loading module conveys and loads the display screen; The film-tearing device scans the display screen conveyed by the feeding module and tears off the protective film on the display screen; The protective film conveying mechanism grabs the torn protective film from the film tearing device and conveys it to the laminating device; The cleaning device cleans the display screen from which the protective film has been torn off, and transports the cleaned display screen to the inspection platform; The AOI detector of the detection device detects the cleaned display screen and determines whether the display screen is qualified; If the display screen passes the inspection, the laminating device will transport the qualified display screen to the laminating platform, attach the protective film to the display screen, and then transport it to the OK belt line of the discharging module for unloading; if the display screen fails the inspection, the laminating device will transport the unqualified display screen to the laminating platform, attach the protective film to the display screen, and then transport it to the NG belt line of the discharging module for unloading.

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