Finished product appearance detection machine and detection method thereof

Abstract

The invention discloses a finished product appearance detection machine and a detection method thereof, and the machine comprises a feeding device which is used for feeding a display screen; the display screen surface treatment device is used for tearing a protective film on the display screen and cleaning the surface of the display screen; the detection device is used for detecting the display screen and comprises a first detection mechanism used for detecting the front face of the display screen, a second detection mechanism used for detecting the back face of the display screen and a third detection mechanism used for detecting buckles of the display screen; the protective film processing device is used for carrying the protective film and attaching the protective film to the surface of the display screen; and the discharging device is used for sorting and discharging the display screens detected by the detection device. The problems that in the prior art, a finished product appearance detection device is long in detection time and affects the production efficiency, and misjudgment, missing detection and low efficiency are prone to occurring when display screen buckles are manually detected are solved.

Description

Technical Field

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

[0002] In the display manufacturing industry, finished product appearance inspection is a key link in ensuring product quality. The existing inspection method mainly uses a double-sided inspection device to inspect the front and back of the display, but this method requires inspection of both sides at the same time, which limits the inspection speed and affects the overall production efficiency. In addition, the buckle part of the display is still inspected manually, which is not only inefficient, but also prone to misjudgment and missed inspections. Summary of the invention

[0003] The main purpose of the present invention is to provide a finished product appearance inspection machine and an inspection method thereof, aiming to solve the problems in the prior art that the finished product appearance inspection device has a long inspection time and affects production efficiency, and that manual inspection of display screen buckles is prone to misjudgment, missed inspection and low efficiency.

[0004] To achieve the above object, the present invention provides a finished product appearance inspection machine, comprising: A feeding device, used for feeding the display screen; A display screen surface treatment device, used to tear off the protective film on the display screen and clean the display screen surface; A detection device, used to detect the display screen, the detection device comprising a first detection mechanism for detecting the front of the display screen, a second detection mechanism for detecting the back of the display screen, and a third detection mechanism for detecting the buckle of the display screen; A protective film handling device, used for carrying the protective film and attaching the protective film to the surface of the display screen; The discharging device is used to sort and discharge the display screens detected by the detection device.

[0005] Optionally, the feeding device includes a feeding belt, a first conveying module and a first flipping module, the first conveying module is used to convey the display screen on the feeding belt to the first flipping module, and the first flipping module is used to flip the display screen.

[0006] Optionally, the first detection mechanism includes a first detection platform, a first mounting frame, a first lifting and adjusting component, a first detection group and a second detection group, the first detection platform is located below the first mounting frame, the first detection group and the second detection group are used to take pictures and detect the display screen on the first detection platform, the first detection group and the second detection group are rotatably connected relative to the first mounting frame, the first detection group is connected to the first lifting and adjusting component, and the first lifting and adjusting component is used to drive the first detection group to perform lifting and lowering movements.

[0007] Optionally, a first light source assembly is provided under the first detection group, and the first light source assembly is rotatably connected to the first mounting bracket; a second light source assembly is provided under the second detection group, and the second light source assembly has three components, the second light source assembly close to the first detection group is fixedly mounted on the first mounting bracket, and the two second light source assemblies away from the first detection group are rotatably connected to the first mounting bracket.

[0008] Optionally, the second detection mechanism includes a second detection platform, a second mounting frame, a second lifting and adjusting assembly, a third detection group and a fourth detection group, the second detection platform is located below the second mounting frame, the third detection group is rotatably connected relative to the second mounting frame, the fourth detection group is fixedly mounted on the second mounting frame, the third detection group is connected to the second lifting and adjusting assembly, and the second lifting and adjusting assembly is used to drive the third detection group to perform lifting and lowering movements.

[0009] Optionally, the second detection mechanism further includes a fourth light source assembly, and the fourth light source assembly is arranged around the second mounting frame.

[0010] Optionally, the second detection mechanism further includes a fifth transport module and a second flip module, the fifth transport module is used to transport the display screen on the laminating mechanism to the second flip module, and the second flip module flips the display screen and places it on the second detection platform.

[0011] Optionally, the third detection mechanism includes a fifth driving member, a fifth detection group and a fifth light source assembly, the fifth light source assembly is fixedly mounted on the fifth detection group, the fifth detection group is fixedly mounted on the fifth driving member and performs photo detection on the display screen.

[0012] Optionally, the third detection mechanism also includes a third detection platform, a support frame, a sixth conveying module arranged on one side of the support frame, and a third flipping module arranged on the other side of the support frame, the third detection platform is located below the support frame, the sixth conveying module is used to transport the display screen to the third detection platform, and the third flipping module is used to adsorb the display screen on the third detection platform and flip the display screen so that the fifth detection group can detect the display screen.

[0013] To achieve the above object, the present invention further proposes a detection method for a finished product appearance detection machine, using any of the above-mentioned finished product appearance detection machines, comprising the following steps: The loading device transports the display screen to the display screen surface processing device; The display screen surface treatment device tears off the protective film on the display screen and cleans the display screen surface after the protective film is torn off; The first detection mechanism takes a photo of the front of the cleaned display screen for detection, and after the detection is completed, the protective film carried by the protective film processing device is attached to the front of the display screen; the second detection mechanism carries the display screen with the protective film attached and detects the back of the display screen, and after the detection is completed, the display screen is carried by the third detection mechanism and the buckles of the display screen are detected; After the shooting test is completed, the discharging device sorts and discharges qualified and unqualified display screens according to the display screen test results.

[0014] The beneficial effects of the present invention are: improving the structure of the existing finished product appearance inspection device, improving the efficiency and accuracy of display screen inspection, and inspecting the front, back and buckle of the display screen respectively through the first inspection mechanism, the second inspection mechanism and the third inspection mechanism which are arranged in sequence, wherein the first inspection mechanism only inspects the front of the display screen, the second inspection mechanism only inspects the back of the display screen, and the third inspection mechanism inspects the buckle part of the display screen. This segmented inspection method ensures that each inspection mechanism only needs to inspect a specific part of the display screen, and there is no need to adjust the inspection angle of the inspection mechanism or wait for other inspection mechanisms to complete, thereby improving the speed and accuracy of the inspection. 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 1This is a schematic diagram of the overall structure of the finished product appearance detection of the present invention; Figure 2 A top view of the appearance inspection of the finished product of the present invention; 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 module of the present invention; Figure 5 It is a structural schematic diagram of the first flip module of the present invention; Figure 6 It is a structural schematic diagram of the film tearing mechanism of the present invention; Figure 7 It is a structural schematic diagram of the second transport module of the present invention; Figure 8 It is a structural schematic diagram of the cleaning module of the present invention; Fig. 9 It is a structural schematic diagram of the third transport module of the present invention; Fig.10 It is a structural schematic diagram of the first detection mechanism of the present invention; Fig.11 It is a structural schematic diagram of the fourth transport module of the present invention; Fig.12 is a structural schematic diagram of the second detection mechanism of the present invention; Fig.13 It is a structural schematic diagram of the fifth transport module and the second flip module of the present invention; Fig.14 is a schematic structural diagram of the third detection mechanism of the present invention; Fig.15 is a schematic structural diagram of a third flip module of the present invention; Fig.16 It is a structural schematic diagram of the first protective film conveying mechanism of the present invention; Fig.17 for Fig.16 A partial enlarged schematic diagram in the middle; Fig.18 It is a structural schematic diagram of the second protective film conveying mechanism of the present invention; Fig.19 It is a structural schematic diagram of the film coating device of the present invention; Fig. 20 It is a structural schematic diagram of the discharging device; Description of labels: 1. Feeding device; 11. Feeding belt; 111. Anti-stack optical fiber; 112. In-position cylinder; 113. In-position optical fiber; 114. First panoramic light source; 115. Second panoramic light source; 116. Positioning camera; 12. First handling module; 121. First adsorption group; 122. First rotating member; 123. First driving member; 13. First flipping module; 131. First lifting cylinder; 132. First flipping cylinder; 133. Second adsorption group; 2. film-tearing mechanism; 21. film-tearing platform; 22. second driving member; 23. second rotating member; 24. first roller; 3. Cleaning mechanism; 31. Second transport module; 311. First moving part; 312. Third rotating part; 313. Second lifting cylinder; 314. Third adsorption group; 32. Third transport module; 321. Second moving part; 322. Fifth lifting cylinder; 323. Fifth adsorption group; 33. Cleaning platform; 34. Scanning component; 35. Cleaning module; 351. Mounting plate; 352. Cloth collecting module; 353. Cloth placing module; 354. Locking drive member; 355. Wiping module; 356. Fourth adsorption group; 357. Spray valve; 41. First detection mechanism; 411. First detection group; 4111. First mounting bracket; 4112. Third moving member; 4113. Fourth rotating member; 4114. First detection camera; 412. Second detection group; 4121. Fourth moving member; 4122. Second detection camera; 4123. Fifth rotating member; 413. First lifting adjustment assembly; 414. First mounting bracket; 415. First detection platform; 416. First light source assembly; 417. Second light source assembly; 418. Fourth transport module; 4181. Sixth lifting cylinder; 4182. Sixth rotating member; 4183. Sixth adsorption group; 42. Second detection mechanism; 421. Third detection group; 4211. Third mounting bracket; 4212. Third detection camera; 4213. Eighth rotating member Component; 4214, the seventh moving component; 422, the fourth detection group; 423, the second detection platform; 424, the second mounting frame; 425, the second lifting and adjusting component; 426, the fifth handling module; 4261, the eighth moving component; 4262, the ninth lifting cylinder; 4263, the ninth adsorption group; 427, the second flip module; 4271, the first flip motor; 4272, the flip bracket; 4273, the tenth adsorption group; 428, the fourth light source component; 43, the third detection mechanism; 431, the third detection platform; 432, the support frame; 433, the third flip module; 4331, the eleventh adsorption group; 4332, the second flip motor; 4333, the tenth lifting cylinder; 434, the fifth driving component; 435, the fifth detection group; 436, the fifth light source component; 5. Protective film transport device; 51. First protective film transport mechanism; 511. Fifth moving part; 512. Protective film adsorption platform; 513. Film pressing assembly; 5131. Pressing cylinder; 5132. Pressing plate; 52. Second protective film transport mechanism; 521. Sixth moving part; 522. Seventh lifting cylinder; 523. Seventh adsorption group; 524. Transfer transport platform; 6. Laminating device; 61. Laminating platform; 62. Third driving member; 63. Alignment platform; 64. Protective film camera; 65. Display camera; 66. Attachment assembly; 661. Eighth adsorption group; 662. Second roller; 663. Eighth lifting cylinder; 664. Seventh rotating member; 67. Third light source assembly; 7. Discharging device; 71. OK belt; 72. 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 finished product appearance inspection machine, referring to Figure 1-Figure 20 ,include: A feeding device 1, used for feeding the display screen; A display screen surface treatment device, used to tear off the protective film on the display screen and clean the display screen surface; A detection device, used to detect the display screen, the detection device includes a first detection mechanism 41 for detecting the front of the display screen, a second detection mechanism 42 for detecting the back of the display screen, and a third detection mechanism 43 for detecting the buckle of the display screen; A protective film handling device, used for carrying the protective film and attaching the protective film to the surface of the display screen; The discharging device 7 is used to sort and discharge the display screens detected by the detection device.

[0021] This embodiment improves the structure of the existing finished product appearance inspection device, improves the efficiency and accuracy of display screen inspection, and inspects the front, back and buckle of the display screen respectively by sequentially arranging the first inspection mechanism 41, the second inspection mechanism 42 and the third inspection mechanism 43, wherein the first inspection mechanism 41 only inspects the front of the display screen, the second inspection mechanism 42 only inspects the back of the display screen, and the third inspection mechanism 43 inspects the buckle part of the display screen. This segmented inspection method ensures that each inspection mechanism only needs to inspect a specific part of the display screen, and there is no need to adjust the inspection angle of the inspection mechanism or wait for other inspection mechanisms to complete, thereby improving the speed and accuracy of the inspection. Specifically, the loading device 1 conveys each display screen to be inspected to the display screen surface treatment device, the display screen surface treatment device tears off the protective film on the display screen and cleans the surface of the display screen to ensure that there is no stain or protective film residue on the surface of the display screen, so as to facilitate the detection device to accurately detect the display screen. The first detection mechanism 41 detects the front of the display screen to detect whether there are scratches, stains or other defects on the front of the display screen. The second detection mechanism 42 detects the back of the display screen to detect whether there are defects on the back of the display screen. The third detection mechanism 43 detects the buckle part of the display screen to detect the integrity of the buckle and whether it matches the size of the display screen. After the detection is completed, the discharging device 7 sorts and unloads the display screen according to the detection result of the display screen.

[0022] In this embodiment, the finished product appearance inspection machine is provided with a plurality of vacuum adsorption groups and vacuum detection switches. When the display screen is placed on the vacuum adsorption group, the display screen covers the adsorption holes on the vacuum adsorption group, and the vacuum detection switch controls the vacuum pumping to be turned on, so that the display screen is vacuum adsorbed on the vacuum adsorption group. The display screen controls the operation of each device by setting a PLC, and the vacuum detection switch is connected to the PLC. When the vacuum detection switch detects the vacuum between the display screen and each suction cup group, it sends an electrical signal to the PLC, so that the PLC can determine whether the suction cup group picks up the display screen. When the display screen accidentally detaches from the suction cup group, the vacuum detection switch detects that the vacuum state disappears and sends an electrical signal to the PLC. The PLC determines that the display screen accidentally falls off and sends a signal to remind.

[0023] Furthermore, the feeding device 1 includes a feeding belt 11, a first transport module 12 and a first flip module 13, the first transport module 12 is used to transport the display screen on the feeding belt 11 to the first flip module 13, and the first flip module 13 is used to flip the display screen.

[0024] Specifically, the loading belt 11 includes a feeding end and a picking end, the feeding end is for placing a display screen on the loading belt 11, and the picking end is provided with a positioning cylinder 112 for driving and positioning the display screen to a specified position, the positioning cylinder 112 is arranged at the tail end of the loading belt 11, and a positioning optical fiber 113 for detecting whether the display screen has reached the specified position is installed on the positioning cylinder 112. The loading belt 11 is also provided with a first panoramic light source 114, which is used to illuminate the display screen on the belt line so that the positioning optical fiber 113 can accurately detect the position of the display screen, and the positioning cylinder 112 cooperates with the positioning optical fiber 113 and pushes the display screen to the picking position of the first conveying module 12. The feeding end of the feeding belt 11 is used to receive upstream products, and the picking end is used for the first handling module 12 to pick up materials. The feeding end is provided with an anti-stacking optical fiber 111 for real-time monitoring of the stacking of display screens on the belt line. When the upstream display screen to be detected is placed at the feeding end, the anti-stacking optical fiber 111 detects the display screen and sends a signal. The upstream handling hand cannot continue to place the display screen at the feeding end at this time. When the display screen moves with the feeding belt 11 and leaves the feeding end, the anti-stacking optical fiber 111 signal is released, and the upstream handling hand can continue to place the display screen at the feeding end, thereby preventing multiple display screens from being stacked. The feeding end is superimposed; the in-position cylinder 112 is arranged on the side of the feeding end and pushes the display screen to move in a direction perpendicular to the sliding direction of the feeding belt 11. The in-position optical fiber 113 is arranged on the in-position cylinder 112. When the in-position optical fiber 113 detects that the display screen has reached the feeding end, the in-position optical fiber 113 controls the motor to stop, and the feeding belt 11 stops moving. The display screen reaches the feeding position through the in-position cylinder 112, and the positioning camera 116 takes a picture to locate the position of the display screen. The first transport module 12 transports the display screen to the first flip module 13. At this time, the motor starts, and the feeding belt 11 continues to move. A second panoramic light source 115 and a positioning camera 116 are also provided near the feeding end of the feeding belt 11. The positioning camera 116 is used to take a picture to locate the in-position display screen, and the second panoramic light source 115 is used to illuminate the area of ​​the feeding end of the feeding belt 11 to make the outline of the display screen clearer, so that the positioning camera 116 can more accurately identify and locate the display screen. When the display screen reaches the material picking end through the push of the positioning cylinder 112 and the positioning optical fiber 113, the second panoramic light source 115 further enhances the lighting effect of the material picking area, especially when facing crooked incoming products, the position of the display screen can be further accurately located through the photo detection of the positioning camera 116. Compared with simply relying on cylinder positioning, this method is more accurate and effectively avoids handling or assembly errors caused by inaccurate position of the display screen.

[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 used to convey the display screen to be inspected. A motor is arranged on one side of the feeding belt 11. After the upstream carrier transports the display screen to be inspected to the feeding belt 11, the motor drives the feeding belt 11 to rotate. The display screen to be inspected is driven by the feeding belt 11 to move to the material picking position of the first transport module 12. At this time, the positioning camera 116 takes a photo to locate the position of the display screen. Based on the image information captured by the positioning camera 116, the first transport module 12 can accurately identify the precise position of the display screen, and adjust the position of its vacuum adsorption group accordingly to grab the display screen and transport the display screen to the first flip module 13. The first flip module 13 is used to flip the display screen 180° so that the front of the display screen faces upward, so that the display screen surface treatment device and the first detection mechanism 41 can directly detect the front of the display screen without additional adjustment or flipping steps, thereby improving the detection efficiency. In this embodiment, the first panoramic light source 114 and the second panoramic light source 115 both include a fixing frame and a light source, the light source is rotatably mounted on the fixing frame, an arc groove is provided on the fixing frame, and the light source is connected to the arc groove through a fastener to ensure that the light source can remain stable after being adjusted to a desired angle, wherein the fastener is a fastener with a fastening function such as a bolt or a screw. When the angle of the light source needs to be adjusted, the fastener can be loosened so that the light source can rotate freely in the arc groove; and when the angle adjustment is completed, the fastener is tightened to firmly lock the light source in the desired position.

[0026] Specifically, the first transport module 12 includes a first adsorption group 121 for adsorbing the display screen, a first driving member 123 for driving the first adsorption group 121 to move, and a first rotating member 122 for driving the first adsorption group 121 to rotate. In this embodiment, the first rotating member 122 is a rotary motor, and the first driving member 123 includes a first X-motion lead screw, a first Y-motion lead screw, a first Z-motion lead screw and a first servo motor. The first servo motor drives the first vacuum adsorption module to move along the first X-motion lead screw, the first Y-motion lead screw and the first Z-motion lead screw. The first driving member 123 drives the first adsorption group 121 to move back and forth along the X-axial direction, and drives the first adsorption group 121 up and down along the Z-axial direction. The first adsorption group 121 can be composed of a vacuum suction cup and is used to adsorb the display screen to be detected. When the display screen reaches the material picking position of the first transport module 12 along the loading belt 11, the first driving member 123 drives the first adsorption group 121 to move to the material picking position along the X-axis direction, and drives the first adsorption group 121 to move downward along the Z-axis direction, so that the first adsorption group 121 adsorbs the display screen to be detected. The first driving member 123 drives the first adsorption group 121 to move upward along the Z-axis direction, and moves in the opposite direction along the X-axis direction to the first flip module 13. At this time, the first driving member 123 drives the first adsorption group 121 to move downward along the Z-axis direction again, and the first adsorption group 121 places the display screen to be detected on the first flip module 13 and releases the vacuum adsorption state. The driving end of the first rotating member 122 is connected to the first adsorption group 121. When the first driving member 123 drives the first adsorption group 121 to move along the Z-axis direction, if the display screen is tilted at the material collection end, the first rotating member 122 starts to drive the first adsorption group 121 to rotate, so that the adsorption position of the adsorption group matches the tilt angle of the display screen, thereby ensuring that the first adsorption group 121 can accurately fit the surface of the display screen. Through the adjustment of the first rotating member 122, the first adsorption group 121 can flexibly adapt to display screens with different tilt angles, achieve stable and accurate adsorption operation, and avoid damage to the display screen or material collection failure due to inaccurate fitting.

[0027] Specifically, the first flip module 13 includes a first lifting cylinder 131, a first flip cylinder 132 and a second adsorption group 133. The second adsorption group 133 is arranged at the end of the first lifting cylinder 131. The second adsorption group 133 is connected to the driving end of the flip cylinder. When the display screen is transported to the second flip module 427 along the first transport module 12, the first lifting cylinder 131 drives the second adsorption group 133 to move upward. The first adsorption group 121 places the display screen on the second adsorption group 133, so that the second adsorption group 133 adsorbs the display screen to be detected. The first flip cylinder 132 drives the second adsorption group 133 to flip 180° so that the back of the display screen faces downward. The first lifting cylinder 131 drives the second adsorption group 133 to move downward. The second adsorption group 133 places the display screen to be detected on the display screen surface treatment device and releases the vacuum adsorption state.

[0028] Furthermore, the display screen surface treatment device comprises a film-tearing mechanism 2 and a cleaning mechanism 3, wherein the film-tearing mechanism 2 is used to tear off the protective film on the display screen, and the cleaning mechanism 3 is used to clean the surface of the display screen.

[0029] The film tearing mechanism 2 includes a film tearing platform 21, a second driving member 22, a second rotating member 23 and a first roller 24. The first roller 24 is connected to the second driving member 22. The second rotating member 23 is located between the second driving member 22 and the first roller 24. The driving end of the second rotating member 23 drives the first roller 24 to rotate through a transmission mechanism. In this embodiment, the second rotating member 23 is a rotary motor. The film tearing platform 21 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. When the second driving member 22 drives the first roller 24 to move upward along the Z-axis direction, the second rotating member 23 starts, driving the first roller 24 to rise and rotate at the same time, so that the protective film is smoothly torn off from the surface of the display screen, so that the force on the protective film is more uniform, and the protective film is prevented from being deformed due to excessive force, which makes the protective film unusable. The second driving member 22 includes a second Y-motion lead screw, a second Z-motion lead screw and a second servo motor. The first roller 24 is driven by the second servo motor to move along the second Y-motion lead screw and the second Z-motion lead screw. The second driving member 22 drives the first roller 24 to move back and forth along the Y-axis direction, and drives the first roller 24 to move up and down along the Z-axis direction. When the display screen is placed on the film tearing platform 21 from the second adsorption module, the film tearing platform 21 moves to the bottom of the first roller 24 through the motion axis, and the second driving member 22 drives the first roller 24 to move downward along the Z-axis direction. The first roller 24 sticks to one end of the protective film on the surface of the display screen. At this time, the second driving member 22 drives the first roller 24 to move upward along the Z-axis direction, so that the first roller 24 drives the protective film to move upward. During the rising process, since the adhesion force between the first roller 24 and the protective film is greater than the adhesion force between the protective film and the display screen, the protective film will be gradually torn off from the display screen by the first roller 24. In this embodiment, the first roller 24 has a sticky surface layer for adhering the protective film, wherein the sticky surface layer can be an adhesive tape or a special coating material with high adhesion.

[0030] The cleaning mechanism 3 includes a second transport module 31, a third transport module 32, a cleaning platform 33, a code scanning component 34 and a cleaning module 35. The second transport module 31 is used to transport the display screen on the film tearing platform 21 to the cleaning module 35. The second transport module 31 includes a first moving part 311, a third rotating part 312, a second lifting cylinder 313 and a third adsorption group 314. In the present embodiment, the third rotating part 312 is a rotating cylinder, the first moving part 311 is composed of a motor, a synchronous belt and a moving shaft, and the cleaning platform 33 is displaced in a linear direction by a moving shaft, and the moving shaft is composed of a moving shaft, a motor and a synchronous belt. A correction cylinder is provided under the cleaning platform 33 for correcting the position of the cleaning platform 33, so that the cleaning module 35 can accurately contact the surface of the display screen in the subsequent cleaning process, avoiding damage to the display screen or failure of material collection due to inaccurate fitting, and facilitating the subsequent cleaning of the cleaning module 35. The first moving part 311 drives the third adsorption group 314 to move back and forth from the film tearing platform 21 to the cleaning platform 33, and the second lifting cylinder 313 is lifted and lowered vertically. The third adsorption group 314 is connected to the driving end of the third rotating part 312 and is arranged at the end of the first lifting cylinder 131 and moves up and down synchronously with the first lifting cylinder 131. When the display screen reaches the material picking position of the second conveying module 31 along the film tearing platform 21, the first moving part 311 drives the second lifting cylinder 313 and the third adsorption group 314 to move to the material picking position, and the second lifting cylinder 313 is lifted and lowered vertically. The cylinder 313 drives the third adsorption group 314 to move downward, so that the third adsorption group 314 adsorbs the display screen, the second lifting cylinder 313 drives the third adsorption group 314 to move upward, the first moving part 311 moves in the opposite direction and reaches the cleaning platform 33, the third rotating part 312 drives the third adsorption group 314 to rotate, so that the orientation of the display screen is completely parallel to the surface of the cleaning platform 33, the second lifting cylinder 313 drives the third adsorption group 314 to move downward again, the third adsorption group 314 places the display screen on the cleaning platform 33 and releases the vacuum adsorption state.

[0031] The code scanning component 34 is located on both sides of one end of the cleaning platform 33. The code scanning component 34 includes a code scanning bracket and a scanning terminal installed on the code scanning bracket. The scanning terminal is located on both sides of the cleaning platform 33 and scans the display screen. When the display screen of the second transport module 31 is placed on the cleaning platform 33, the scanning terminal can automatically identify and scan the display screen, reduce manual input errors, and improve the automation level of the production line. The scanning terminal can identify the product information of the display screen to enter the serial number of the display screen into the system, record it for subsequent display screen detection, and facilitate subsequent quality analysis.

[0032] The cleaning module 35 includes a mounting plate 351, on which a cloth collecting module 352, a cloth placing module 353, a locking drive member 354, a wiping module 355, a fourth adsorption group 356 and a spray valve 357 are provided. A dust-free cloth is wound around the cloth collecting module 352, the cloth placing module 353 and the locking drive member 354. An alcohol tank is provided at the rear of the mounting plate 351. The alcohol tank is connected to the spray valve 357 and sprays alcohol on the dust-free cloth. The wiping module 355 is located on one side of the spray valve 357. The wiping module 355 is used to drive the dust-free cloth to reciprocate to wipe the display screen. In this embodiment, the fourth adsorption group 356 is provided with a third lifting cylinder, and the third lifting cylinder is used to drive the fourth adsorption group 356 to rise and fall. The mounting plate 351 is provided with a plurality of support rollers. The dust-free cloth is wound around the cloth collecting module 352, the cloth placing module 353 and the locking drive 354, and is wound around the support rollers to form a continuous cloth belt, wherein the locking drive 354 is used to tension and lock the dust-free cloth to ensure the stability of the dust-free cloth. In this embodiment, the wiping module 355 and the spray valve 357 each have two groups, and the two groups of wiping modules 355 and spray valves 357 are respectively located on both sides of the fourth adsorption group 356.

[0033] The wiping module 355 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.

[0034] When the first group of display screens reaches the cleaning position of the first group of wiping modules 355 of the cleaning module 35 along the cleaning platform 33, the fourth lifting cylinder drives the wiping head to drive the dust-free cloth to move downward, and the shaking motor drives the wiping head to drive the dust-free cloth to reciprocate on the first group of display screens, thereby wiping the stains on the surfaces of the display screens. 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 355. The wiping modules 355 repeat the above actions to further wipe the first group of display screens. At the same time, the second group of display screens reaches the cleaning position of the first group of wiping modules 355 along the cleaning platform 33, and the first group of wiping modules 355 wipes the second group of display screens. After the second group of wiping modules 355 have wiped the first group of display screens, the cleaning platform 33 continues to move forward, driving the first group of display screens to move to the cleaning position of the second group of display screens. The first group of display screens moves to the material taking position of the third transport module 32, and the second group of display screens moves to the adsorption position of the fourth adsorption group 356. The third lifting cylinder drives the fourth adsorption group 356 to move downward, so that the fourth adsorption group 356 adsorbs the second group of display screens. The third lifting cylinder drives the fourth adsorption group 356 to move upward. When the third transport module 32 transports the first group of display screens and leaves the cleaning platform 33, the cleaning platform 33 moves in the opposite direction to the second transport module 31. At this time, the third lifting cylinder drives the fourth adsorption group 356 to move downward again. The fourth adsorption group 356 places the second group of display screens on the cleaning platform 33 and releases the vacuum adsorption state. The cleaning platform 33 drives the second group of display screens to move forward to the cleaning position of the second wiping module 355, and the second group of wiping modules 355 wipes the second group of display screens. At the same time, the next group of display screens on the cleaning platform 33 are also cleaned and transported according to the same process.

[0035] The third transport module 32 includes a second moving part 321, a fifth lifting cylinder 322 and a fifth adsorption group 323. In the present embodiment, the second moving part 321 is composed of a motor, a synchronous belt and a linear guide rail. The second moving part 321 drives the fifth adsorption group 323 to move back and forth from the cleaning platform 33 to the first detection platform 415. The fifth lifting cylinder 322 is lifted and lowered vertically. The fifth adsorption group 323 is arranged at the end of the fifth lifting cylinder 322 and moves up and down synchronously. When the display screen reaches the material picking position of the third transport module 32 along the cleaning platform 33, the second lifting cylinder 313 drives the third adsorption group 314 to move downward, so that the third adsorption group 314 adsorbs the display screen. The fifth lifting cylinder 322 drives the fifth adsorption group 323 to move upward. The second moving part 321 moves in the opposite direction and reaches the first detection platform 415. The fifth lifting cylinder 322 drives the fifth adsorption group 323 to move downward again. The fifth adsorption group 323 places the display screen on the first detection platform 415 and releases the vacuum adsorption state.

[0036] Further, the first detection mechanism 41 includes a first detection platform 415, a first mounting frame 414, a first lifting and adjusting component 413, a first detection group 411 and a second detection group 412. The first detection platform 415 is located below the first mounting frame 414. A correction cylinder is provided below the first detection platform 415 to correct the display screen on the first detection platform 415. The first detection group 411 and the second detection group 412 are used to take pictures and detect the display screen on the first detection platform 415. The first detection group 411 and the second detection are rotatably connected relative to the first mounting frame 414. The first detection group 411 is connected to the first lifting and adjusting component 413. The first lifting and adjusting component 413 is used to drive the first detection group 411 to perform lifting and lowering movements. In this embodiment, the first detection platform 415 is displaced in a linear direction through a motion axis, and the motion axis is composed of a moving axis, a motor and a synchronous belt. The first detection group 411 includes a first mounting bracket 4111 and a first detection camera 4114 installed on the first mounting bracket 4111. The first detection camera 4114 has two, which are respectively located on the left and right sides of the first mounting bracket 4111. The two first detection cameras 4114 are rotatably connected relative to the first mounting bracket 4111. The first detection group 411 also includes a fourth rotating member 4113 and a third moving member 4112. The third moving member 4112 is arranged on the first mounting bracket 4111. The third moving member 4112 drives the first detection camera 4114 to rotate along a direction perpendicular to the first detection platform. 415 moves in the moving direction so that the first detection camera 4114 can adjust its position as needed. The first detection camera 4114 and the first mounting bracket 4111 are also provided with a fourth rotating member 4113. The fourth rotating member 4113 can rotate to adjust the orientation angle of the first detection camera 4114. The first lifting and adjusting component 413 adopts a linear drive module of the prior art. The first mounting bracket 4111 is slidably connected to the first lifting and adjusting module through a slider, driving the first detection camera 4114 to move up and down, thereby adjusting the distance between the first detection camera 4114 and the display screen to achieve all-round detection of the display screen.

[0037] The second detection group 412 includes a fourth movable member 4121 and a second detection camera 4122 installed on the fourth movable member 4121, the second detection camera 4122 has two, the two second detection cameras 4122 are vertically distributed along a direction parallel to the first detection platform 415, the two second detection cameras 4122 are rotatably connected relative to the fourth movable member 4121, the fourth movable member 4121 drives the second detection camera 4122 to move along a moving direction parallel to the first detection platform 415, so that the second detection camera 4122 can adjust its position according to demand, the second detection camera 4122 and the fourth movable member 4121 are also provided with a fifth rotating member 4123, the fifth rotating member 4123 can rotate to adjust the orientation angle of the second detection camera 4122.

[0038] Furthermore, a first light source assembly 416 is provided below the first detection group 411, and the first light source assembly 416 is rotatably connected to the first mounting bracket 414; a second light source assembly 417 is provided below the second detection group 412, and the second light source assembly 417 has three second light source assemblies, the second light source assembly 417 close to the first detection group 411 is fixedly installed on the first mounting bracket 4111, and the two second light source assemblies 417 far from the first detection group 411 are rotatably connected to the first mounting bracket 414.

[0039] The first light source assembly 416 has two groups, which are respectively installed under the two first detection cameras 4114. The first light source assembly 416 includes a first light source mounting frame and a first light source installed on the first light source mounting frame. The first light source mounting frame is provided with an arc groove. The first light source is connected to the arc groove by a fastener to ensure that the first light source can remain stable after being adjusted to the desired angle, wherein the fastener is a fastener with a fastening function such as a bolt or a screw. When the angle of the first light source needs to be adjusted, the fastener can be loosened so that the first light source can rotate freely in the arc groove; and when the angle adjustment is completed, the first light source is firmly locked in the desired position by tightening the fastener. The second light source assembly 417 has three, and the second light source assembly 417 close to the first detection group 411 is fixedly installed on the first mounting bracket 4111 to maintain a stable lighting effect. The two second light source assemblies 417 away from the first detection group 411 are rotatably connected to the first mounting frame 414, and the angle and position can be flexibly adjusted according to the detection requirements. The structures of the two second light source components 417 far away from the first detection group 411 are the same as the structure of the first light source component 416 , and will not be elaborated herein.

[0040] By comparing the image with the preset image, it is determined whether the display screen has defects. If there are stains or damage in the image, or the point defect in the image is >0.06mm, or the line defect W>0.02mm, L>0.5mm, the display screen is judged to be unqualified. If there are no stains or damage, or the point defect in the image is ≤0.06mm, or the line defect W≤0.02mm, L≤0.5mm, the display screen is judged to be qualified. The first detection camera 4114 and the second detection camera 4122 adjust different illumination angles by rotating to more accurately detect whether the display screen has defects.

[0041] The first detection mechanism 41 also includes a fourth transport module 418, which is used to transport the display screen on the first detection platform 415 to the protective film processing device. The fourth transport module 418 includes a sixth lifting cylinder 4181, a sixth rotating member 4182, and a sixth adsorption group 4183. The sixth adsorption group 4183 is arranged at the end of the sixth lifting cylinder 4181 and moves up and down synchronously. When the display screen reaches the material picking position of the fourth transport module 418 along the first detection platform 415, the sixth lifting cylinder 4181 is rotated to move the display screen to the protective film processing device. 81 drives the sixth adsorption group 4183 to move downward, so that the sixth adsorption group 4183 adsorbs the display screen, the sixth lifting cylinder 4181 drives the sixth adsorption group 4183 to move upward, the sixth rotating part 4182 drives the sixth adsorption group 4183 to rotate, so that the orientation of the display screen is completely parallel to the surface of the coating platform 61 of the protective film processing device, the sixth lifting cylinder 4181 drives the sixth adsorption group 4183 to move downward again, the sixth adsorption group 4183 places the display screen on the coating platform 61 of the protective film processing device and releases the vacuum adsorption state.

[0042] Furthermore, the protective film processing device includes a protective film conveying device 5 for conveying the protective film and a coating device 6 for attaching the protective film to the surface of the display screen.

[0043] The protective film conveying device 5 includes a first protective film conveying mechanism 51 and a second protective film conveying mechanism 52. The first protective film conveying mechanism 51 is used to grab the torn protective film from the film tearing mechanism 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 laminating device 6. The first protective film conveying mechanism 51 includes a fifth moving member 511, a protective film adsorption platform 512 and a film pressing assembly 513. In this embodiment, the fifth moving member 511 is composed of a motor, a synchronous belt and a moving shaft. The fifth moving member 511 drives the protective film adsorption platform 512 to move back and forth from the film tearing mechanism 2 to the second protective film conveying mechanism 52. 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 protective film adsorption platform 512. When the fifth movable member 511 drives the protective film adsorption platform 512 to move to the bottom of the film tearing mechanism 2, the clamping cylinder 5131 drives the pressing plate 5132 to approach the protective film adsorption platform 512, pressing the protective film tightly on the platform. At this time, the fifth movable member 511 drives the protective film adsorption platform 512 away from the film tearing mechanism 2. As the protective film adsorption platform 512 moves, the protective film is peeled off from the film tearing mechanism 2 under the action of the pressing plate 5132.

[0044] The second protective film conveying mechanism 52 includes a sixth moving member 521, a seventh adsorption group 523, a seventh lifting cylinder 522 and a transfer conveying platform 524. In the present embodiment, the sixth moving member 521 is composed of a motor, a synchronous belt and a moving shaft. The seventh adsorption group 523 is provided with two groups, and the transfer conveying platform 524 is located between the two groups of the seventh adsorption groups 523. The sixth moving member 521 drives the seventh lifting cylinder 522 and the seventh adsorption group 523 to move back and forth along the direction of the first protective film conveying mechanism 51 to the coating device 6. The seventh lifting cylinder 522 is lifted and lowered vertically. The seventh adsorption group 523 is arranged on the driving part of the first lifting cylinder. When the display screen reaches the material picking position of the second protective film conveying mechanism 52, the sixth moving member 521 drives the seventh lifting cylinder 522 and the seventh adsorption group 523 to move to the material picking position. The seventh lifting cylinder 522 drives the seventh adsorption group 523 to move downward, so that the seventh adsorption group 523 adsorbs the display screen, and the seventh lifting cylinder 522 drives the seventh adsorption group 523 to move upward The sixth moving member 521 moves in the opposite direction and reaches the coating device 6. At this time, one group of the seventh adsorption groups 523 moves to the coating device 6, and the other group of the seventh adsorption groups 523 moves to the transfer handling platform 524. The seventh lifting cylinder 522 drives the seventh adsorption group 523 to move downward. The seventh adsorption group 523 places the display screen on the coating device 6 and the transfer handling platform 524 respectively and releases the vacuum adsorption state. The sixth moving member 521 moves in the opposite direction to the first protective film handling mechanism 51. At this time, the seventh lifting cylinder 522 drives the seventh adsorption group 523 to move downward again. One group of the seventh adsorption groups 523 adsorbs the display screen on the protective film handling platform, and the other group of the seventh adsorption groups 523 adsorbs the display screen on the secondary handling platform. The seventh lifting cylinder 522 drives the seventh adsorption group 523 to move upward. The sixth moving member 521 moves in the opposite direction and reaches the coating device 6. The seventh adsorption group 523 places the display screen adsorbed by the transfer platform on the coating device 6, and places the display screen adsorbed by the protective film handling platform on the transfer handling platform 524. At the same time, the next group of display screens transported by the second protective film transport mechanism 52 is also transported according to the same process.

[0045] The coating device 6 includes a coating platform 61, a third driving member 62, an alignment platform 63, a protective film camera 64, a display screen camera 65 and an attachment component 66. The protective film 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 display screen camera 65 is used to locate the position of the display screen on the coating platform 61. The attachment component 66 is connected to the third driving member 62, and the attachment component 66 is used to attach the protective film to the surface of the display screen. In this embodiment, the coating platform 61 is displaced in a linear direction by a motion axis, and the motion axis is composed of a motion axis, a motor and a synchronous belt. The third driving member 62 includes a third X motion screw, a third Y motion screw, a third Z motion screw and a third servo motor, and the attachment component 66 is driven by the third servo motor to move along the third X motion screw, the third Y motion screw and the third Z motion screw.

[0046] The attaching assembly 66 includes an eighth adsorption group 661, a second roller 662, an eighth lifting cylinder 663 and a seventh rotating member 664. The eighth adsorption group 661 is connected to the driving end of the seventh rotating member 664. The eighth lifting cylinder 663 is installed on the eighth adsorption group 661. The second roller 662 is located at one side of the eighth adsorption group 661 and is connected to the driving end of the eighth lifting cylinder 663. The third driving member 62 drives the eighth adsorption group 661 to move above the alignment platform 63 and drives the eighth adsorption group 661 to move downward, so that the eighth adsorption group 661 adsorbs the protective film. The third driving member 62 drives the eighth adsorption group 661 to move upward and move in the opposite direction to above the coating platform 61. The seventh rotating member 664 drives the eighth adsorption group 661 to rotate so that the direction of the protective film is parallel to the surface curvature of the display screen. The third driving member 62 drives the eighth adsorption group 661 to move downward again. The eighth adsorption group 661 places the protective film on the surface of the display screen on the coating platform 61 and releases the hollow adsorption state. At this time, the eighth lifting cylinder 663 drives the second roller 662 to move downward so that the second roller 662 presses the protective film. The third driving member 62 drives the eighth adsorption group 661 to move along the Y-axis direction, thereby driving the roller to roll along the direction of the protective film to completely fit the protective film to the display screen. When the protective film is completely fitted to the surface of the display screen, the third driving member 62 drives the eighth adsorption group 661 to move upward.

[0047] The third light source assembly 67 is provided around the alignment platform 63 and the coating platform 61. When the protective film camera 64 and the display screen camera 65 take pictures of the protective film and the display screen respectively, the third light source assembly 67 can illuminate the protective film on the alignment platform 63 and the display screen on the coating platform 61, making the shooting result more accurate.

[0048] Furthermore, the second detection mechanism 42 includes a fifth transport module 426 and a second flip module 427. The fifth transport module 426 is used to transport the display screen on the laminating mechanism to the second flip module 427. The second flip module 427 flips the display screen and places it on the second detection platform 423. The fifth transport module 426 includes an eighth moving member 4261, a ninth lifting cylinder 4262 and a ninth adsorption group 4263. In the present embodiment, the eighth moving member 4261 adopts a linear drive module of the prior art. The ninth adsorption group 4263 is arranged at the end of the ninth lifting cylinder 4262 and moves up and down synchronously. When the display screen reaches the material picking position of the fifth transport module 426 along the coating platform 61, the eighth moving component drives the ninth lifting cylinder 4262 and the ninth adsorption group 4263 to move to the material picking position. The ninth lifting cylinder 4262 drives the ninth adsorption group 4263 to move downward so that the ninth adsorption group 4263 adsorbs the display screen. The ninth lifting cylinder 4262 drives the ninth adsorption group 4263 to move upward. The eighth moving component moves in the opposite direction to the second flipping module 427. The ninth lifting cylinder 4262 drives the ninth adsorption group 4263 to move downward. The ninth adsorption group 4263 places the display screen on the second flipping module 427 and releases the vacuum adsorption state.

[0049] The second flip module 427 includes a first flip motor 4271, a flip bracket 4272 and a tenth adsorption group 4273. The flip bracket 4272 is provided with a flip rod, and the flip rod is connected to the driving end of the first flip motor 4271. The tenth adsorption group 4273 is fixedly connected to the flip rod. When the display screen is placed from the ninth adsorption group 4263 to the tenth adsorption group 4273, the tenth adsorption group 4273 adsorbs the display screen, and the first flip motor 4271 is started to drive the flip rod to flip, and then the tenth adsorption group 4273 is flipped 180° so that the back of the display screen faces upward, so that the second detection mechanism 42 can directly detect the back of the display screen without additional adjustment or flipping steps, thereby improving the detection efficiency.

[0050] Furthermore, the second detection mechanism 42 also includes a second detection platform 423, a second mounting frame 424, a second lifting and adjusting assembly 425, a third detection group 421 and a fourth detection group 422, the second detection platform 423 is located below the second mounting frame 424, the third detection group 421 is rotatably connected relative to the second mounting frame 424, the fourth detection group 422 is fixedly mounted on the second mounting frame 424, the third detection group 421 is connected to the second lifting and adjusting assembly 425, and the second lifting and adjusting assembly 425 is used to drive the third detection group 421 to perform lifting and lowering movements. The third detection group 421 includes a third mounting bracket 4211 and a third detection camera 4212 mounted on the third mounting bracket 4211. The third detection camera 4212 has two, which are respectively located on the left and right sides of the third mounting bracket 4211. The two third detection cameras 4212 are rotatably connected relative to the third mounting bracket 4211. The third detection group 421 also includes an eighth rotating member 4213 and a seventh moving member 4214. The seventh moving member 4214 is arranged on the third mounting bracket 4211. The seventh moving member 4214 drives the third detection camera 4212 to rotate along a direction perpendicular to the second detection platform. 423 moves in the moving direction, so that the third detection camera 4212 can adjust its position according to the demand. The third detection camera 4212 and the third mounting bracket 4211 are also provided with an eighth rotating member 4213, and the eighth rotating member 4213 can rotate to adjust the orientation angle of the third detection camera 4212. The second lifting and adjusting component 425 adopts the linear drive module of the prior art. The third mounting bracket 4211 is slidably connected to the second lifting and adjusting module through a slider, driving the third detection camera 4212 to move up and down, thereby adjusting the distance between the third detection camera 4212 and the display screen to achieve all-round detection of the display screen. The fourth detection group 422 includes a fourth detection camera, which is fixedly mounted on the second bracket to perform stable detection of the display screen. In this embodiment, the second detection platform 423 is arranged on the fourth driving member, and the fourth driving member drives the second detection platform 423 to move along the X direction and the Y direction, so that the second detection platform 423 can be adjusted according to the demand. The fourth driving member includes a fourth X motion lead screw, a fourth Y motion lead screw, a synchronous belt and a fourth servo motor. The second detection platform 423 is driven by the fourth servo motor to move along the fourth X motion lead screw and the fourth Y motion lead screw.

[0051] Furthermore, the second detection mechanism 42 further includes a fourth light source assembly 428, which is disposed around the second mounting frame 424. When the third detection group 421 and the fourth detection group 422 take pictures of the back of the display screen, the fourth light source assembly 428 can illuminate the display screen on the second detection platform 423, so that the shooting result is more accurate. The structure of the fourth light source assembly 428 is the same as that of the first panoramic light source 114, and no further details are given here.

[0052] Furthermore, the third detection mechanism 43 also includes a third detection platform 431, a support frame 432, a sixth transport module provided on one side of the support frame 432, and a third flip module 433 provided on the other side of the support frame 432. The third detection platform 431 is located below the support frame 432. The sixth transport module is used to transport the display screen to the third detection platform 431. The third flip module 433 is used to absorb the display screen on the third detection platform 431 and flip the display screen so that the fifth detection group 435 can detect the display screen. The structure of the sixth transport module is the same as the structure and implementation of the third transport module 32, and no further details are given here.

[0053] The third flipping module 433 includes an eleventh adsorption group 4331, a second flipping motor 4332 and a tenth lifting cylinder 4333. The driving end of the second flipping motor 4332 drives the eleventh adsorption group 4331 to rotate through a transmission mechanism. When the tenth lifting cylinder 4333 drives the eleventh adsorption group 4331 to rise, the second flipping motor 4332 starts, driving the eleventh adsorption group 4331 to rotate at the same time, so that the front of the display screen is opposite to the third detection mechanism 43, so that the third detection mechanism 43 can detect the display screen.

[0054] In this embodiment, the third detection platform 431 is disposed on the eleventh lifting cylinder and is displaced in a linear direction through a motion axis, and the motion axis adopts a linear drive module of the prior art.

[0055] Furthermore, the third detection mechanism 43 includes a fifth driving member 434, a fifth detection group 435 and a fifth light source assembly 436. The fifth light source assembly 436 is fixedly installed on the fifth detection group 435 to illuminate the display screen on the third flip module 433 to make the shooting result more accurate. The fifth detection group 435 is fixedly installed on the fifth driving member 434 to perform photo detection on the display screen. In this embodiment, the fifth driving member 434 includes a fifth X-motion screw rod, a fifth Y-motion screw rod and a fifth servo motor. The fifth servo motor drives the fifth detection group 435 to move along the fifth X-motion screw rod and the fifth Y-motion screw rod. The fifth detection group 435 includes a fifth detection camera. When the sixth transport module transports the display screen from the second inspection platform 423 to the third inspection platform 431, the third inspection platform 431 moves to below the third flip module 433, the tenth lifting cylinder 4333 drives the eleventh adsorption group 4331 to move downward, the eleventh adsorption group 4331 adsorbs the display screen, and the tenth lifting cylinder 4333 moves upward. The second flip motor 4332 simultaneously drives the eleventh adsorption group 4331 to flip. When the display screen is flipped to a direction parallel to the fifth detection group 435, the fifth detection group 435 takes a photo of the surface of the display screen to ensure that the buckle on the surface of the display screen matches the display screen and that the buckle has no defects such as damage.

[0056] Furthermore, the discharging module includes a seventh transport module, an OK belt 71 and an NG belt 72. When the display screen completes the detection of the detection device, the third detection platform 431 moves to the seventh transport module, and the seventh transport module takes away the display screen of the third detection platform 431 and places it on the OK belt 71 or the NG belt 72 according to the detection result of the display screen; the seventh transport module has the same structure and implementation as the third transport module 32, and will not be described in detail here. The OK belt 71 is used to receive and transport the display screen that has passed the inspection, and the NG belt 72 is used to receive and transport the display screen that has failed the inspection. Specifically, the OK belt 71 and the NG belt 72 are both driven by a driving motor. The OK belt 71 and the NG belt 72 are both provided with an anti-stacking optical fiber at one end of the seventh transport module. The anti-stacking optical fiber is used to detect the display screen to prevent multiple display screens from overlapping. The anti-stacking optical fiber is the same as the anti-stacking optical fiber 111 on the above-mentioned feeding belt 11, and will not be described in detail here.

[0057] The present invention also provides a detection method for a finished product appearance detection machine, using the above-mentioned finished product appearance detection machine, comprising the following steps: The feeding device 1 conveys the display screen to the display screen surface treatment device; The display screen surface treatment device tears off the protective film on the display screen and cleans the display screen surface after the protective film is torn off; The first detection mechanism 41 takes a photo of the front of the cleaned display screen for detection, and after the detection is completed, the protective film carried by the protective film processing device is attached to the front of the display screen; the second detection mechanism 42 carries the display screen with the protective film attached and detects the back of the display screen, and after the detection is completed, the display screen is carried by the third detection mechanism 43 and the buckle of the display screen is detected; After the shooting detection is completed, the discharging device 7 sorts and discharges qualified display screens and unqualified display screens according to the display screen detection results.

[0058] The process of the feeding device 1 conveying the display screen to the display screen surface treatment device includes the first conveying module 12 conveying the display screen from the feeding belt 11 to the first flipping module 13, the first flipping module 13 flips the display screen 180 degrees, the film tearing mechanism 2 tears off the protective film on the surface of the display screen, and conveys the protective film to the alignment platform 63 of the laminating device 6 through the protective film conveying device 5, the cleaning mechanism 3 cleans the display screen after the protective film is torn off, and conveys it to the first detection mechanism 41 through the third conveying module 32, and the surface of the display screen is detected by the first detection mechanism 41, and the display screen is left to be cleaned. After the inspection is completed, it is transported to the laminating device 6 through the fourth conveying module 418, and the protective film is attached to the surface of the display screen through the laminating device 6. The display screen is transported by the fifth conveying mechanism and flipped by the second flipping module 427. Then, the back of the display screen is inspected by the second inspection mechanism 42, and then the display screen is transported to the third inspection mechanism 43 for inspection by the sixth conveying module. After the inspection is completed, the seventh conveying module places the qualified display screen on the OK belt 71 and unloads it according to the inspection result of the display screen, and places the unqualified display screen on the NG belt 72 and unloads it.

[0059] 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 finished product appearance inspection machine, characterized in that: include: A feeding device, used for feeding the display screen; Display screen surface treatment device, used to tear off the protective film on the display screen and clean the display screen surface; A detection device, used to detect the display screen, the detection device comprising a first detection mechanism for detecting the front of the display screen, a second detection mechanism for detecting the back of the display screen, and a third detection mechanism for detecting the buckle of the display screen; A protective film handling device, used for carrying the protective film and attaching the protective film to the surface of the display screen; The discharging device is used to sort and discharge the display screens detected by the detection device.

2. The finished product appearance inspection machine according to claim 1, characterized in that: The feeding device comprises a feeding belt, a first conveying module and a first flipping module. The first conveying module is used to convey the display screen on the feeding belt to the first flipping module. The first flipping module is used to flip the display screen.

3. The finished product appearance inspection machine according to claim 1, characterized in that: The first detection mechanism includes a first detection platform, a first mounting frame, a first lifting and adjusting component, a first detection group and a second detection group. The first detection platform is located below the first mounting frame. The first detection group and the second detection group are used to take pictures and detect the display screen on the first detection platform. The first detection group and the second detection group are rotatably connected relative to the first mounting frame. The first detection group is connected to the first lifting and adjusting component. The first lifting and adjusting component is used to drive the first detection group to perform lifting and lowering movements.

4. The finished product appearance inspection machine according to claim 3, characterized in that: A first light source assembly is provided below the first detection group, and the first light source assembly is rotatably connected to the first mounting bracket; a second light source assembly is provided below the second detection group, and the second light source assembly has three components, the second light source assembly close to the first detection group is fixedly installed on the first mounting bracket, and the two second light source assemblies away from the first detection group are rotatably connected to the first mounting bracket.

5. The finished product appearance inspection machine according to claim 1, characterized in that: The second detection mechanism includes a second detection platform, a second mounting frame, a second lifting and adjusting assembly, a third detection group and a fourth detection group. The second detection platform is located below the second mounting frame. The third detection group is rotatably connected relative to the second mounting frame. The fourth detection group is fixedly mounted on the second mounting frame. The third detection group is connected to the second lifting and adjusting assembly. The second lifting and adjusting assembly is used to drive the third detection group to perform lifting and lowering movements.

6. The finished product appearance inspection machine according to claim 5, characterized in that: The second detection mechanism also includes a fourth light source assembly, and the fourth light source assembly is arranged around the second mounting frame.

7. The finished product appearance inspection machine according to claim 5, characterized in that: The second detection mechanism also includes a fifth transport module and a second flip module. The fifth transport module is used to transport the display screen on the protective film processing device to the second flip module. The second flip module flips the display screen and places it on a second detection platform.

8. The finished product appearance inspection machine according to claim 1, characterized in that: The third detection mechanism includes a fifth driving member, a fifth detection group and a fifth light source assembly. The fifth light source assembly is fixedly mounted on the fifth detection group. The fifth detection group is fixedly mounted on the fifth driving member and performs photo detection on the display screen.

9. The finished product appearance inspection machine according to claim 8, characterized in that: The third detection mechanism also includes a third detection platform, a support frame, a sixth conveying module arranged on one side of the support frame, and a third flipping module arranged on the other side of the support frame. The third detection platform is located below the support frame, the sixth conveying module is used to convey the display screen to the third detection platform, and the third flipping module is used to adsorb the display screen on the third detection platform and flip the display screen so that the fifth detection group can detect the display screen.

10. A detection method for a finished product appearance detection machine, characterized in that: The finished product appearance inspection machine according to any one of claims 1 to 9 comprises the following steps: The loading device transports the display screen to the display screen surface processing device; The display screen surface treatment device tears off the protective film on the display screen and cleans the display screen surface after the protective film is torn off; The first detection mechanism takes a photo of the front of the cleaned display screen for detection, and after the detection is completed, the protective film carried by the protective film processing device is attached to the front of the display screen; the second detection mechanism carries the display screen with the protective film attached and detects the back of the display screen, and after the detection is completed, the display screen is carried by the third detection mechanism and the buckles of the display screen are detected; After the shooting test is completed, the discharging device sorts and discharges qualified and unqualified display screens according to the display screen test results.

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