Full-automatic optical detector

Abstract

The invention discloses a full-automatic optical detection machine, which comprises a material conveying module, which comprises a feeding belt and a carrying assembly; the cleaning module comprises a first moving platform and a cleaning mechanism, the carrying assembly carries the screen to the first moving platform, and the cleaning mechanism cleans the screen; the leveling mechanism is located on the moving path of the first moving platform, and the leveling mechanism is used for leveling an FPC (Flexible Printed Circuit) of a screen; the detection module comprises a second moving platform and a detection mechanism, the carrying assembly carries the cleaned screen to the second moving platform to be fixed and powered on, the detection mechanism comprises a main detection part and a side detection part, the main detection part is located above the screen, the side detection part is located above the screen, and the main detection part is located above the side detection part. The screen is detected in multiple directions; and the blanking module is used for blanking the screen. The problems that manual operation is low in production efficiency, and detection accuracy and reliability cannot be guaranteed are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of screen visual inspection, and in particular to a fully automatic optical inspection machine. Background Art

[0002] With the development of smart phones and display technology, the quality of LCD modules, as the core components of smart phone displays, directly affects the performance and user experience of the final product. After the LCD modules are assembled into modules, they need to undergo rigorous power-on testing to ensure their performance and reliability.

[0003] Traditional LCD module inspection mainly relies on manual visual inspection, which is slow and cannot meet the needs of large-scale production. Manual visual inspection requires a lot of manpower input, which not only increases production costs, but also becomes less and less economical in the current context of rising labor costs. Long-term visual inspection can easily lead to worker fatigue and decreased vision, thereby increasing the risk of misjudgment and omissions, affecting product quality. In addition, manual inspection is greatly affected by personal experience and subjective judgment, making it difficult to achieve unified and consistent inspection standards. Summary of the invention

[0004] The main purpose of the present invention is to provide a fully automatic optical inspection machine, aiming to solve the problems of low production efficiency, inability to ensure the accuracy and reliability of inspection, and harm to the human body caused by long-term manual inspection.

[0005] To achieve the above object, the present invention provides a fully automatic optical inspection machine, comprising: Feeding module, including feeding belt and handling components; A cleaning module, comprising a first mobile platform and a cleaning mechanism, wherein the transport component transports the screen to the first mobile platform, and the cleaning mechanism cleans the screen on the first mobile platform; A leveling mechanism, located on the moving path of the first moving platform, the leveling structure levels the FPC of the screen; The detection module includes a second mobile platform and a detection mechanism. The transport component transports the cleaned screen to the second mobile platform for fixation and power supply. The detection mechanism includes a main detection component and a side detection component. The main detection component is located above the screen, and the side detection component is located obliquely above the screen, so as to detect the screen in multiple directions. Cutting module, used for cutting screens.

[0006] Optionally, the conveying assembly includes a loading robot, an intermediate robot and a unloading robot moving along a sliding axis, the loading robot conveys the screen between the loading belt and the first mobile platform, the intermediate robot conveys the screen between the first mobile platform and the second mobile platform, and the unloading robot conveys the screen between the second mobile platform and the unloading module.

[0007] Optionally, the first moving platform includes a first adsorption platform, an alignment component and a first moving axis, the first adsorption platform is used to adsorb the screen and move along the first moving axis, and the alignment component is arranged on the first adsorption platform and corrects the position of the screen.

[0008] Optionally, the cleaning mechanism includes a rotating brush and a cleaning lifting cylinder, the rotating brush is arranged on the cleaning lifting cylinder and moves up and down, and the rotating brush rotates and cleans the screen.

[0009] Optionally, the flattening mechanism includes a roller and a shaping cylinder, the roller is arranged at a driving end of the shaping cylinder, the shaping cylinder drives the roller to rise and fall, and the roller rolls relative to the first moving platform to flatten the FPC.

[0010] Optionally, the second moving platform includes a second adsorption platform, a second moving axis and a test fixture, the second adsorption platform is used to adsorb the screen and move along the second moving axis, and the test fixture is arranged on the second adsorption platform and electrically connected to the FPC of the screen to light up the screen.

[0011] Optionally, the detection module further includes a movable TP detection member, which is disposed above the second adsorption platform and contacts the screen to detect the touch sensitivity of the screen.

[0012] Optionally, the detection module further includes an alignment member disposed between the first movable platform and the second adsorption platform, and the alignment member takes a photo to determine the position of the screen FPC so that the screen FPC is docked with the test fixture.

[0013] Optionally, the main detection component includes a third moving axis and a main detection camera, and the main detection camera is arranged on the third moving axis and moves along the third moving axis to take pictures.

[0014] Optionally, the side detection member includes a side detection bracket and a side detection camera, and the side detection camera is rotatably disposed on the side detection bracket to adjust an oblique photographing angle; The side detection brackets and the side detection cameras are provided in four numbers and are respectively located around the second mobile platform.

[0015] The beneficial effects of the present invention are as follows: through the processes of automatic feeding, cleaning, leveling and testing, the problems of low production efficiency, failure to ensure the accuracy and reliability of testing, and long-term manual testing causing harm to the human body are solved; before the test, a cleaning module capable of automatically cleaning the screen and a leveling mechanism for leveling the FPC are provided, so that dust on the screen can be removed to avoid affecting the test results during the subsequent test photography process; during the FPC leveling process, the FPC can be automatically leveled, so that the FPC will not be offset when the electrical connection is performed; during the test process, a main detection component on the upper side and a side detection component obliquely above are provided, so as to realize multi-directional detection of the screen and improve the accuracy and reliability of the test; the fully automatic optical inspection machine realizes automatic loading, testing and unloading throughout the whole process, so as to improve the detection efficiency and reduce the harm to the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] Figure 1 It is a schematic diagram of the overall structure of the fully automatic optical inspection machine of the present invention; Figure 2 It is a schematic diagram of the first internal structure of the fully automatic optical inspection machine of the present invention; Figure 3 It is a second internal structure schematic diagram of the fully automatic optical inspection machine of the present invention; Figure 4 for Figure 3 Schematic diagram of the enlarged structure of the A area in the middle; Figure 5 It is a schematic diagram of the internal top view structure of the fully automatic optical inspection machine of the present invention; Figure 6 It is a schematic diagram of the overall structure of the feeding belt in the present invention; Figure 7 It is a schematic diagram of the overall structure of the handling assembly in the present invention; Figure 8 for Figure 7 Schematic diagram of the enlarged structure of the middle B area; Fig. 9 for Figure 7 Schematic diagram of the enlarged structure of the middle C area; Fig.10 is a schematic diagram of the overall structure of the first mobile platform in the present invention; Fig.11It is a schematic diagram of the overall structure of the cleaning mechanism in the present invention; Fig.12 It is a schematic diagram of the overall structure of the leveling mechanism in the present invention; Fig.13 is a schematic diagram of the overall structure of the second mobile platform in the present invention; Fig.14 It is a schematic diagram of the overall structure of the alignment member in the present invention; Fig.15 It is a schematic diagram of the overall structure of the detection mechanism in the present invention; Fig.16 It is a schematic diagram of the overall structure of the blanking module in the present invention.

[0018] Description of labels: 1. Feeding module; 11. Feeding belt; 111. Fiber in place; 112. Cylinder in place; 113. Driving motor; 12. Handling assembly; 121. Sliding shaft; 122. Feeding manipulator; 1221. Feeding adsorption piece; 1222. Feeding cylinder; 1223. Feeding bracket; 123. Intermediate manipulator; 1231. Intermediate adsorption piece; 1232. Intermediate cylinder; 1233. Intermediate bracket; 124. Unloading manipulator; 2. Cleaning module; 21. First moving platform; 211. First adsorption platform; 212. Alignment assembly; 213. First moving axis; 22. Cleaning mechanism; 221. Rotating brush; 222. Cleaning lifting cylinder; 223. Cleaning bracket; 224. Dust removal part; 3. Leveling mechanism; 31. Roller; 32. Shaping cylinder; 33. Leveling bracket; 4. Detection module; 41. Second moving platform; 411. Second adsorption platform; 412. Second moving axis; 413. Test fixture; 4131. Pressing cylinder; 4132. Transmission shaft; 4133. Pressing plate; 4134. Needle membrane; 42. Detection mechanism; 421. Main detection part; 4211. Third moving axis; 4212. Main detection camera; 422. Side detection part; 4221. Side detection bracket; 4222. Side detection camera; 423. Light source assembly; 43. TP detection part; 431. Rotating part; 432. Support rod; 433. TP marking column; 44. Alignment part; 441. Light source; 442. Alignment camera; 443. Alignment bracket; 5. Unloading module; 51. OK belt; 52. NG belt; 6. Casing; 61. Control module; 7. Screen.

[0019] 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

[0020] 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.

[0021] 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.

[0022] 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.

[0023] One embodiment of the present invention provides a fully automatic optical inspection machine, referring to Figures 1 to 16 ,include: The feeding module 1 includes a feeding belt 11 and a conveying assembly 12; The cleaning module 2 comprises a first mobile platform 21 and a cleaning mechanism 22. The transporting assembly 12 transports the screen 7 to the first mobile platform 21, and the cleaning mechanism 22 cleans the screen 7 on the first mobile platform 21. A leveling mechanism 3 is located on the moving path of the first moving platform 21, and the leveling structure is used to level the FPC of the screen 7; The detection module 4 includes a second mobile platform 41 and a detection mechanism 42. The transport assembly 12 transports the cleaned screen 7 to the second mobile platform 41 for fixing and powering. The detection mechanism 42 includes a main detection member 421 and a side detection member 422. The main detection member 421 is located above the screen 7, and the side detection member 422 is located obliquely above the screen 7, so as to detect the screen 7 from multiple directions. The blanking module 5 is used for blanking the screen 7 .

[0024] This embodiment solves the problems of low production efficiency, failure to ensure the accuracy and reliability of detection, and long-term manual detection that are harmful to the human body through automatic feeding, cleaning, leveling and detection processes; before detection, a cleaning module 2 that can automatically clean the screen 7 and a leveling mechanism 3 that level the FPC are set, so that dust on the screen 7 can be removed to avoid affecting the detection results during the subsequent detection and photography process. During the FPC leveling process, the FPC can be automatically leveled so that the FPC will not be offset when the alignment electrical connection is performed. During the detection process, the main detection member 421 on the upper side and the side detection member 422 on the upper side are set, so as to achieve multi-directional detection of the screen 7 and improve the accuracy and reliability of the detection. The fully automatic optical detection machine realizes automatic loading, detection and unloading throughout the process, thereby improving the detection efficiency and reducing the damage to the human body. Specifically, the feeding belt 11 is used to receive the screen 7 conveyed by the upstream manipulator. Of course, different products to be inspected can also be selected according to different detection requirements. The screen 7 is only used as an example of a product to be inspected. The loading belt 11 conveys each screen 7 to be inspected to the picking point of the conveying component 12. The conveying component 12 conveys the screen 7 from the loading belt 11 to the first mobile platform 21. After cleaning and leveling, the conveying component 12 conveys the screen 7 from the first mobile platform 21 to the second mobile platform 41 to detect bright electricity, dark spots, foreign matter, white electricity, light leakage, dirt, mura, malfunction, etc. The conveying component 12 conveys the screen 7 after the inspection to the unloading module 5. The unloading module 5 unloads the screen 7 separately according to the inspection results, so that the entire inspection process does not require manual participation, which not only improves the inspection efficiency, but also greatly improves the accuracy and reliability of the inspection results compared to manual inspection.

[0025] In this embodiment, reference Figures 1 to 5 The fully automatic optical inspection machine also includes a casing 6, wherein the feeding module 1, the cleaning module 2, the leveling mechanism 3, the inspection module 4 and the unloading module 5 are all arranged in the casing 6, and the casing 6 is provided with a control module 61, which can control the operation between each module. At the same time, the inspection result in the inspection module 4 is uploaded to the control module 61 for processing and feedback. The control module 61 is connected to the display screen on the casing 6 to display the inspection result and data such as inspection time and quantity in real time and upload them to the network.

[0026] In this embodiment, reference Figure 6The feeding belt 11 includes a feeding end and a picking end. The feeding end is used to receive the screen 7 transferred by the upstream manipulator, and the picking end is for the handling component 12 to pick up the screen 7. The picking end is provided with an in-position optical fiber 111, an in-position cylinder 112 and a driving motor 113. The in-position cylinder 112 is arranged at the bottom of the feeding belt 11, and a baffle is arranged at the driving end of the in-position cylinder 112. The baffle can prevent the screen 7 from accidentally sliding off. The in-position optical fiber 111 is fixed on the baffle, and the driving motor 113 drives the entire feeding belt 11 to move through the pulley, so that the screen 7 can move from the feeding end to the picking end. Specifically, when the screen 7 moves to the material-collecting end, the baffle blocks the screen 7 from continuing to move. At this time, the in-place optical fiber 111 can judge that the screen 7 is in place through photoelectric sensing to control the drive motor 113 to stop moving. The in-place cylinder 112 controls the baffle to move away to avoid the conveying assembly 12 to collect materials. The conveying assembly 12 moves to the material-collecting end to pick up the screen 7. When the screen 7 sensed by the in-place optical fiber 111 is picked up, the in-place optical fiber 111 sends a signal to allow the feeding belt 11 to continue the next movement. The feeding end is provided with an anti-stacking optical fiber, which is used to detect the screen 7 and prevent the screen 7 from being superimposed. When the upstream screen 7 is placed at the feeding end, the anti-stacking optical fiber detects the screen 7 and sends a signal. The upstream manipulator cannot continue to place the screen 7 at the feeding end. When the screen 7 moves with the feeding belt 11 and leaves the feeding end, the signal of the anti-stacking optical fiber is released, and the upstream manipulator can continue to place the screen 7 at the feeding end, thereby preventing multiple screens 7 from being superimposed at the feeding end.

[0027] Further, refer to Figures 7 to 9 The conveying assembly 12 includes a loading robot 122, an intermediate robot 123 and a unloading robot 124 moving along a sliding axis 121. The loading robot 122 conveys the screen 7 between the loading belt 11 and the first mobile platform 21, the intermediate robot 123 conveys the screen 7 between the first mobile platform 21 and the second mobile platform 41, and the unloading robot 124 conveys the screen 7 between the second mobile platform 41 and the unloading module 5. In this embodiment, the sliding shaft 121 is arranged along the X direction, one end of the sliding shaft 121 is close to the loading belt 11, and the other end is close to the unloading module 5. The cleaning module 2, the leveling mechanism 3 and the detection module 4 are located between the two ends of the sliding shaft 121, so that the loading robot 122, the intermediate robot 123 and the unloading robot 124 can all slide along the X direction of the sliding shaft 121. The sliding shaft 121 is composed of a servo motor and a screw rod, so that it runs fast and has good stability. It should be noted that in this application, the X direction represents the horizontal direction, the Y direction represents the longitudinal direction, and the Z direction represents the vertical direction.

[0028] The feeding robot 122 includes a feeding suction piece 1221, a feeding cylinder 1222 and a feeding bracket 1223. The bottom of the feeding bracket 1223 is connected to the sliding shaft 121 and moves laterally along the sliding shaft 121. The feeding cylinder 1222 is arranged at the upper end of the feeding bracket 1223. The upper end of the feeding bracket 1223 extends along the Y direction to the top of the feeding belt 11. The upper end of the feeding bracket 1223 is provided with a driving groove extending along the Y direction. The feeding cylinder 1222 can move in the driving groove, so that the feeding cylinder 1222 can Adjust its longitudinal position, the loading adsorption piece 1221 is set at the pushing end of the loading cylinder 1222, the loading cylinder 1222 pushes the loading adsorption piece 1221 up and down along the Z direction, the loading adsorption piece 1221 is provided with a vacuum suction cup and a scanning piece, the scanning piece can scan and identify the screen 7, the vacuum suction cup is provided with a plurality of vacuum adsorption holes and a vacuum sensing piece, the screen 7 covers the vacuum adsorption hole, the vacuum sensing piece senses that the screen 7 is in contact with the vacuum suction cup, the vacuum adsorption hole starts vacuum pumping, so that the vacuum adsorption hole adsorbs the screen 7, so as to achieve the purpose of picking up the screen 7.

[0029] Specifically, the vacuum sensing component is electrically connected to the control module 61. When the vacuum sensing component detects that vacuum adsorption is achieved between the screen 7 and the vacuum suction cup, the vacuum sensing component sends an electrical signal to the control module 61, so that the control module 61 can determine whether the loading adsorption component 1221 has fixedly adsorbed the screen 7. When the screen 7 accidentally detaches from the loading adsorption component 1221 during movement, the vacuum sensing component senses that the vacuum adsorption state of the vacuum adsorption hole disappears and sends an electrical signal to the control module 61. The control module 61 determines that the screen 7 is accidentally detached and sends a signal to remind the operator.

[0030] When the screen 7 moves to the feeding end of the feeding belt 11, the feeding bracket 1223 moves along the sliding shaft 121 to drive the feeding adsorption part 1221 to move to just above the feeding point of the feeding belt 11. After the scanning part recognizes the screen 7, the feeding cylinder 1222 is started, and the feeding adsorption part 1221 descends along the Z direction to make the vacuum suction cup contact with the screen 7 and start vacuuming. After the screen 7 is adsorbed, the feeding cylinder 1222 drives the feeding adsorption part 1221 to rise in the reverse direction, and the sliding shaft 121 of the feeding bracket 1223 moves to above the feeding point of the first moving platform 21, and the feeding adsorption part 1221 descends again to place the screen 7 on the first moving platform 21.

[0031] The intermediate manipulator 123 is used to transfer the cleaned screen 7 from the first mobile platform 21 to the second mobile platform 41. The intermediate manipulator 123 is provided with an intermediate adsorption member 1231, an intermediate cylinder 1232 and an intermediate bracket 1233. The intermediate adsorption member 1231 has a substantially same structure as the above-mentioned feeding adsorption member 1221. The intermediate cylinder 1232 is provided on the intermediate bracket 1233. The intermediate cylinder 1232 includes two cylinders in the Z direction and the Y direction. The intermediate adsorption member 1231 is provided on the Z direction cylinder. The Z-axis cylinder is arranged on the Y-axis cylinder, and the Y-axis cylinder is arranged on the intermediate bracket 1233, so that the intermediate adsorption member 1231 can move along the Z-axis and the Y-axis. The intermediate bracket 1233 is arranged on the sliding shaft 121 and moves laterally along the sliding shaft 121 to adjust the X-axis position of the intermediate adsorption member 1231, so that the intermediate adsorption member 1231 can transfer the screen 7 from the first mobile platform 21 to the second mobile platform 41. The transportation process thereof can refer to the transportation process of the above-mentioned loading robot 122.

[0032] The unloading robot 124 is used to unload the screens 7 after the inspection. The unloading robot 124 can pick up the screens 7 from the second mobile platform 41, and unload the qualified screens 7 and the unqualified screens 7 according to the inspection results of the screens 7. The structure and handling process of the unloading robot 124 can refer to the above-mentioned loading robot 122 and the intermediate robot 123.

[0033] Further, refer to Fig.10The first moving platform 21 includes a first adsorption platform 211, an alignment component 212 and a first moving axis 213. The first adsorption platform 211 is used to adsorb the screen 7 and move along the first moving axis 213. The alignment component 212 is arranged on the first adsorption platform 211 and corrects the position of the screen 7. The first adsorption platform 211 adsorbs the screen 7 by vacuum adsorption, thereby fixing the screen 7. Specifically, the first adsorption platform 211 is also provided with a plurality of vacuum adsorption holes and vacuum sensors. When the loading robot 122 transfers the screen 7 to the first adsorption platform 211, the screen 7 covers the vacuum adsorption holes. The vacuum sensors sense that the screen 7 is attached to the first adsorption platform 211, and the vacuum adsorption holes start vacuum pumping, so that the vacuum adsorption holes adsorb the screen 7, and the screen 7 is fixed to the first adsorption platform 211. The alignment assembly 212 includes an X-axis alignment cylinder and a Y-axis alignment cylinder, which are respectively arranged on both sides of the first adsorption platform 211 to pre-correct the screen 7 according to a preset position. The first moving axis 213 is arranged along the Y direction, and the first moving axis 213 is composed of a screw rod and a servo motor. The first adsorption platform 211 is arranged on the first moving axis 213 and moves along the first moving axis 213. The first moving axis 213 extends to the cleaning mechanism 22 and the leveling mechanism 3 respectively, so that the first adsorption platform 211 passes through the cleaning mechanism 22 and the leveling mechanism 3 respectively when moving along the first moving axis 213.

[0034] In this embodiment, two first mobile platforms 21 are provided, and the two first mobile platforms 21 are arranged in parallel. The loading robot 122 can load the two first adsorption platforms 211 respectively, so that when one of the first adsorption platforms 211 is moved for cleaning or leveling, the other first adsorption platform 211 can also receive the screen 7.

[0035] Further, refer to Fig.11, the cleaning mechanism 22 includes a rotating brush 221 and a cleaning lifting cylinder 222, the rotating brush 221 is arranged on the cleaning lifting cylinder 222 and moves up and down, and the rotating brush 221 rotates and cleans the screen 7. In this embodiment, the cleaning mechanism 22 also includes a cleaning bracket 223 and a dust removal member 224, the cleaning bracket 223 is fixed to the housing 6, and the cleaning lifting cylinder 222 is fixed to the cleaning bracket 223, so that the cleaning lifting cylinder 222 and the rotating brush 221 are erected to be located above the first moving shaft 213, and the rotating brush 221 can move up and down along the Z direction under the drive of the cleaning lifting cylinder 222. The rotating brush 221 is a horizontal cylindrical brush, which is driven to rotate by a motor, and the rotating brush 221 is made of a soft material to prevent the screen 7 from being scratched. The dust removal member 224 is used to remove the dust raised by the rotating brush 221. The rotating brush 221 is semi-enclosed by the dust removal member 224, and the lower half of the rotating brush 221 is exposed to clean the surface of the screen 7. The dust removal member 224 includes a dust removal pipe and an exhaust fan. One end of the dust removal pipe extends to the outside of the housing 6, and the other end semi-encloses the rotating brush 221. When the first mobile platform 21 moves to the bottom of the cleaning mechanism 22 along the Y direction, the cleaning lifting cylinder 222 drives the rotating brush 221 to descend to a preset height so that the surface of the rotating brush 221 can contact the surface of the screen 7. The rotating brush 221 rotates under the drive of the motor to clean the screen 7. At the same time, the dust removal member 224 starts and exhausts air, thereby timely discharging the cleaned dust from the housing 6.

[0036] It should be noted that two cleaning lifting cylinders 222, rotating brushes 221 and dust removal parts 224 are arranged in parallel to correspond to the two first movable platforms 21, so that the screens 7 on the two first movable platforms 21 can be cleaned separately, thereby improving the efficiency of the cleaning process.

[0037] Further, refer to Fig.12, the leveling mechanism 3 includes a roller 31 and a shaping cylinder 32, the roller 31 is arranged at the driving end of the shaping cylinder 32, the shaping cylinder 32 drives the roller 31 to rise and fall, and the roller 31 rolls relative to the first mobile platform 21 to flatten the FPC. In this embodiment, the leveling mechanism 3 is used to level the FPC on the screen 7 so that one end of the gold finger of the FPC can be placed flatly in the corresponding groove during subsequent inspection, thereby achieving electrical connection. The leveling mechanism 3 also includes a leveling bracket 33, the leveling bracket 33 is fixed to the housing 6, the leveling bracket 33 is in the form of a gantry, the shaping cylinder 32 is arranged on the leveling bracket 33, the shaping cylinder 32 is telescopic along the Z direction, the roller 31 is a horizontal cylindrical structure, and the roller 31 is arranged at the pushing end of the shaping cylinder 32, so that the roller 31 can move up and down under the push of the shaping cylinder 32. Specifically, when the first moving platform 21 moves along the first moving axis 213, the screen 7 is cleaned by the cleaning mechanism 22 and continues to move to the rear side of the cleaning mechanism 22. At this time, under the push of the shaping cylinder 32, the roller 31 descends along the Z direction so that the lower surface of the roller 31 can contact the FPC of the screen 7. After the first moving platform 21 continues to move, the FPC of the screen 7 and the roller 31 move relative to each other, so that the roller 31 flattens the FPC to avoid warping or bending and affecting subsequent electrical connections. It should be noted that a pressure sensing component and a pressure regulating valve are provided in the shaping cylinder 32. According to the pressure sensing component sensing the pressure of the shaping cylinder 32, by comparing the preset pressure value, the pressure regulating valve controls the downward pressure of the roller 31 to prevent the FPC from being damaged due to excessive pressure.

[0038] It can be understood that two shaping cylinders 32 and two rollers 31 are also provided to correspond to the two sets of first moving platforms 21 .

[0039] Further, refer to Fig.13, the second mobile platform 41 includes a second adsorption platform 411, a second moving axis 412 and a test fixture 413. The second adsorption platform 411 is used to adsorb the screen 7 and move along the second moving axis 412. The test fixture 413 is arranged on the second adsorption platform 411 and is electrically connected to the FPC of the screen 7 to light up the screen 7. The second adsorption platform 411 is provided with the same vacuum adsorption holes and vacuum sensing parts as the first adsorption platform 211 mentioned above. The second adsorption platform 411 adsorbs and fixes the screen 7 by vacuum adsorption. The second moving axis 412 is extended along the Y direction. The second moving axis 412 is composed of a screw and a servo motor. The second adsorption platform 411 is arranged on the second mobile platform 41 and moves along the second moving axis 412. The second moving axis 412 extends to the bottom of the detection mechanism 42, so that the second adsorption platform 411 can drive the screen 7 to perform mobile detection. In a set of detection modules 4, two sets of second mobile platforms 41 are provided, and both sets of second mobile platforms 41 can adsorb the screen 7 to improve the detection efficiency.

[0040] The test fixture 413 moves with the second adsorption platform 411. The test fixture 413 includes a crimping cylinder 4131, a transmission shaft 4132 and a needle film 4134. The crimping cylinder 4131 is arranged at one end of the second adsorption platform 411. The driving end of the crimping cylinder 4131 is connected to the transmission shaft 4132. The transmission shaft 4132 includes three sections. The end of the first section is vertically connected to the driving end of the crimping cylinder 4131. When the crimping cylinder 4131 is started, the first section rotates along the axis, the second section is connected to the middle position of the first section, the second section rotates synchronously around the axis of the first section, the end of the third section is rotationally connected to the end of the second section, and the other end of the third section is provided with a pressing plate 4133 to press the gold finger part of the FPC into the needle film 4134. The needle film 4134 is provided with a connection groove for the gold finger at the end of the FPC to fit and place, and the bottom of the groove is provided with an electrical terminal connected to the gold finger of the FPC. When the screen 7 is placed on the second adsorption platform 411, the FPC enters the connection groove, and the crimping cylinder 4131 drives the pressing plate 4133 through the transmission shaft 4132 to press the gold fingers of the FPC onto the electrical terminals and realize electrical connection, thereby lighting up the screen 7. At the same time, the pressing plate 4133 can also ensure that the FPC will not separate from the needle membrane 4134 during the subsequent mobile detection process.

[0041] In another embodiment, reference may be made to Figure 3 and Figure 4 The test fixture 413 can also be in another form. For example, the transmission shaft 4132 in the test fixture 413 is replaced with a clamping plate structure. The cylinder drives one end of the clamping plate to be pressed down, so that the other end of the clamping plate is lifted up, and the FPC can enter the needle membrane 4134. The cylinder drives one end of the clamping plate to rise, so that the other end of the clamping plate is pressed down, and the pressure plate 4133 set at the end of the clamping plate presses the FPC gold finger onto the electrical terminal.

[0042] The FPC is electrically connected to the needle membrane 4134, and the needle membrane 4134 is electrically connected to the control module 61, so that the screen 7 can display different pictures. The picture of the screen 7 can generally be black, white, gray, red, blue, and the control module 61 can control the picture switching of the screen 7 through the needle membrane 4134, and collect the detection result feedback of the screen 7 at the same time.

[0043] Further, continue to refer to Figure 3 and Figure 4 , the detection module 4 also includes a movable TP detection member 43, which is arranged above the second adsorption platform 411 and contacts the screen 7 to detect the touch sensitivity of the screen 7. The TP detection member 43 is used to detect the touch performance and response time of the screen 7 to improve the quality and consistency of the screen 7. In this embodiment, the TP detection member 43 is located on the moving path of the second adsorption platform 411, and the TP detection member 43 includes a rotating member 431, a support rod 432 and a TP marking column 433. The rotating member 431 is fixed in a bracket in the housing 6, and the end of the support rod 432 is connected to the rotating member 431, so that the support rod 432 can rotate around the end, and the rotating member 431 can be a rotating cylinder or a rotating motor. The support rod 432 is provided with a slide groove extending along its length direction, and the TP marking column 433 is perpendicular to the support rod 432. One end of the TP marking column 433 is arranged in the slide groove and slides along the slide groove. The surface of the other end of the TP marking column 433 is conductive cloth to simulate finger touch. The TP marking column 433 is provided with a retractable spring so that its end can be retracted. The end of the TP marking column 433 with the conductive cloth is a soft head to prevent the screen 7 from being crushed.

[0044] When the screen 7 moves to the bottom of the TP detection member 43, the rotating member 431 drives the support rod 432 to rotate 90 degrees, so that the support rod 432 switches from vertical to horizontal, and the TP marking column 433 switches from horizontal to vertical, and the end of the TP marking column 433 with the conductive cloth contacts the screen 7. As the screen 7 moves, the TP marking column 433 marks on the screen 7, and the response result of the screen 7 to the TP marking column 433 is fed back to the control module 61 through the needle film 4134 at the same time, so that the operator can observe the TP detection result of the screen 7. Of course, according to the preset detection control path, the TP marking column 433 can also move horizontally along the slide groove on the support rod 432 synchronously during the movement of the screen 7, so as to slide out different line styles on the screen 7. Each second mobile platform 41 is correspondingly provided with a group of TP detection members 43, and two TP marking columns 433 are provided in each TP detection member 43 to improve the detection accuracy.

[0045] Further, please refer to Figure 5 and Fig.14, the detection module 4 also includes an alignment member 44 disposed between the first moving platform 21 and the second adsorption platform 411. The alignment member 44 takes a picture to determine the position of the FPC of the screen 7, so that the FPC of the screen 7 is docked with the test fixture 413. The alignment member 44 is fixed to the housing 6 and is located between the first adsorption platform 211 and the second adsorption platform 411. The alignment member 44 is below the moving path of the screen 7 to take pictures of the FPC. The alignment member 44 includes a light source 441, an alignment camera 442 and an alignment bracket 443. The light source 441 is disposed at the lens of the alignment camera 442. The light source irradiates upward to the FPC of the screen 7, so that the alignment camera 442 can clearly perform picture positioning. The alignment camera 442 is fixed on the alignment bracket 443 and takes pictures of the FPC passing by upward. The alignment camera 442 is a CCD camera, and the alignment bracket 443 is fixed to the housing 6. Specifically, when the intermediate manipulator 123 moves the screen 7 from the first adsorption platform 211 to the second adsorption platform 411, the moving path of the FPC of the screen 7 intersects with the shooting range of the alignment camera 442, so that the alignment camera 442 can capture the gold finger on the FPC. The alignment camera 442 uploads the captured photo to the control module 61. The control module 61 takes the alignment camera 442 as the coordinate center and calculates the coordinate position of the FPC gold finger according to the position of the gold finger from the center of the photo, thereby controlling the intermediate manipulator 123 to compensate for the deviation of the FPC gold finger position through two cylinders to ensure that the gold finger is accurately placed in the needle membrane 4134.

[0046] Further, refer to Fig.15, the main detection member 421 includes a third moving shaft 4211 and a main detection camera 4212, the main detection camera 4212 is arranged on the third moving shaft 4211 and moves along the third moving shaft 4211 to take pictures. The main detection member 421 is arranged above the second moving platform 41, and takes pictures of the screen 7 on the second moving platform 41 from top to bottom. The third moving shaft 4211 is fixed to the bracket of the housing 6, and the third moving shaft 4211 extends along the X direction. The main detection camera 4212 is slidably arranged on the third moving shaft 4211, so that the photo detection range of the main detection camera 4212 moves synchronously with the movement of the main detection camera 4212. There are two second moving platforms 41, and the two second moving platforms 41 are arranged in parallel horizontally. The main detection camera 4212 can move horizontally along the third moving shaft 4211 to adjust the photo position of the main detection camera 4212 according to the different positions of the screen 7. The third moving shaft 4211 is composed of a servo motor and a screw rod, so that it runs fast and has good stability. In this embodiment, the main detection camera 4212 can be a CCD camera. The main detection camera 4212 uses a 25M camera, and its detection lens is: ILE-1624-25MH1. The camera's detection range field of view is: 300*300mm, the distance from the lens to the surface of the product is: 360±20mm, and the resolution is: 5120*5120.

[0047] When the screen 7 is powered on and TP detected, the second mobile platform 41 drives the screen 7 to continue to move to the detection range of the main detection camera 4212, and the main detection camera 4212 takes a photo of the screen 7, and the photo is uploaded to the control system and compared with the preset photo for analysis. The main detection camera 4212 can detect a variety of images of the screen 7, such as red, green, blue, white, black, gray and white frame, 80% pure gray, grayscale, etc. The comparison detection standard of the preset photo is: point defect> 0.02mm, line defect W> 0.08mm, L> 0.8mm. When the defect in the photo is greater than this value, it is judged as NG. For example, the bright spot defect setting value is 0.02mm in diameter. If there is one bright spot with a diameter greater than 0.02mm, it is judged as NG; if there are many bright spots with a diameter less than 0.02mm, it is OK. The missed detection rate of this fully automatic optical inspection machine is <0.5% (missed detection rate = number of missed detections / total number of inputs*100%), and its screening rate is <8% (screening rate = number of screened numbers / total number of inputs*100%).

[0048] refer to Figure 5 and Fig.15The detection mechanism 42 also includes a light source assembly 423 arranged around the detection range. The light source assembly 423 includes a diffusion lamp and four lamp tubes. The diffusion lamp is located above the screen 7 and is connected to the main detection camera 4212. The diffusion lamp moves synchronously with the main detection camera 4212 along the third movable axis 4211. The diffusion lamp can irradiate downward to form a conical illumination range. The lamp tubes are respectively located in four directions of the detection space of the screen 7. The surrounding light sources avoid a single light source from casting a shadow on the side of the screen 7 without light source, thereby affecting the detection result. The light source assembly 423 can be turned on or off according to the moving position of the second movable platform 41. For example, when the second movable platform 41 drives the screen 7 to enter the detection position, the light source assembly 423 is automatically turned on. When the second movable platform 41 leaves the detection position, the light source assembly 423 is automatically turned off, thereby realizing automatic control.

[0049] Further, continue to refer to Fig.15 The side detection member 422 includes a side detection bracket 4221 and a side detection camera 4222. The side detection camera 4222 is rotatably arranged on the side detection bracket 4221 to adjust the oblique shooting angle. Four side detection brackets 4221 and four side detection cameras 4222 are respectively arranged and are respectively located around the second mobile platform 41. The side detection bracket 4221 is fixed on the bracket of the housing 6, and the side detection camera 4222 is rotatably arranged on the side detection bracket 4221. Specifically, the side detection bracket 4221 faces the center of the detection space of the screen 7. The side detection bracket 4221 is provided with a 90-degree arc groove. One end of the side detection camera 4222 is slidably arranged in the arc groove. By sliding in the arc groove, the oblique illumination angle of the detection camera can be adjusted. The positions of the screens 7 of the two second mobile platforms 41 arranged in parallel are also different in the detection space. The side detection camera 4222 adjusts the angle of irradiation of the screen 7 through the arc groove, thereby ensuring that the screens 7 at different positions can be detected. The four side detection brackets 4221 and the four side detection cameras 4222 are respectively located around the detection space of the screen 7. The four detection cameras can adjust the shooting angle so that the screen 7 can be detected in all directions to improve the detection accuracy. The side detection camera 4222 can be a CCD camera. The side detection camera 4222 uses a 12M color camera. The detection field of the camera is 330*250mm, and the resolution of the side detection camera 4222 is 4000*3000. After the detection is completed, it is the same as the main detection camera 4212, and the photos are uploaded to the control module 61 for comparative analysis.

[0050] In this example, two sets of detection modules 4 are provided, and the two sets of detection modules 4 are arranged in parallel along the moving direction of the intermediate manipulator 123, that is, four sets of the second mobile platform 41 are provided, and arranged along the X direction, two main detection cameras 4212 are provided, and eight side detection cameras 4222 are provided. The two sets of detection modules 4 can detect four screens 7, thereby improving the detection efficiency of the equipment. The intermediate manipulator 123 loads materials separately according to the positions of the four second mobile platforms 41, and the unloading manipulator 124 unloads the screens 7 after the detection on the four second mobile platforms 41. When the two manipulators conflict in handling, the priority order of the intermediate manipulator 123 and the unloading manipulator 124 is that the unloading manipulator 124 unloads the second mobile platform 41 first, and after unloading, the intermediate manipulator 123 carries out the loading and unloading.

[0051] In this embodiment, reference Fig.16 The unloading module 5 includes an OK belt 51 and an NG belt 52. When the screen 7 completes the detection by the detection mechanism 42, the second moving platform 41 drives the screen 7 to move reversely to the initial position, that is, the loading point position of the intermediate manipulator 123. The unloading manipulator 124 moves to the position of the second adsorption platform 411. The unloading manipulator 124 picks up the inspected screen 7 on the second adsorption platform 411 and places it on the OK belt 51 or the NG belt 52 according to the detection result of the detection mechanism 42 on the screen 7. The handling process of the unloading manipulator 124 can refer to the handling process of the above-mentioned loading manipulator 122 and the intermediate manipulator 123, which will not be repeated here. The OK belt 51 is used to receive and convey the OK screen 7 that has passed the inspection, and the NG belt 52 is used to receive and convey the NG screen 7 that has failed the inspection. Specifically, the OK belt 51 and the NG belt 52 are both driven by the driving motor 113. The OK belt 51 and the NG belt 52 are both provided with anti-stacking optical fibers at one end where the unloading robot 124 is placed. The anti-stacking optical fibers are used to detect the screen 7 to prevent multiple screens 7 from overlapping. The anti-stacking optical fibers are the same as the anti-stacking optical fibers on the above-mentioned loading belt 11, and are not described in detail here. The other end of the NG belt 52 is also provided with an in-place photoelectric sensor for detecting whether the screen 7 is in place, so that the downstream robot can pick up and transfer the unqualified screen 7 according to the signal of the in-place photoelectric sensor. Specifically, the OK belt 51 and the NG belt 52 are placed vertically in an overlapping manner, and the NG belt 52 is located above the OK belt 51 to save space inside the equipment.

[0052] 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 fully automatic optical inspection machine, characterized in that: include: Feeding module, including feeding belt and handling components; A cleaning module, comprising a first mobile platform and a cleaning mechanism, wherein the transport component transports the screen to the first mobile platform, and the cleaning mechanism cleans the screen on the first mobile platform; A leveling mechanism, located on the moving path of the first moving platform, the leveling structure levels the FPC of the screen; The detection module includes a second mobile platform and a detection mechanism. The transport component transports the cleaned screen to the second mobile platform for fixation and power supply. The detection mechanism includes a main detection component and a side detection component. The main detection component is located above the screen, and the side detection component is located obliquely above the screen, so as to detect the screen in multiple directions. Cutting module, used for cutting screens.

2. The fully automatic optical inspection machine according to claim 1, characterized in that: The conveying assembly includes a loading robot, an intermediate robot and a unloading robot moving along a sliding axis. The loading robot conveys the screen between the loading belt and the first mobile platform, the intermediate robot conveys the screen between the first mobile platform and the second mobile platform, and the unloading robot conveys the screen between the second mobile platform and the unloading module.

3. The fully automatic optical inspection machine according to claim 1, characterized in that: The first moving platform includes a first adsorption platform, an alignment component and a first moving axis. The first adsorption platform is used to adsorb the screen and move along the first moving axis. The alignment component is arranged on the first adsorption platform and corrects the position of the screen.

4. The fully automatic optical inspection machine according to claim 1, characterized in that: The cleaning mechanism comprises a rotating brush and a cleaning lifting cylinder. The rotating brush is arranged on the cleaning lifting cylinder and moves up and down. The rotating brush rotates and cleans the screen.

5. The fully automatic optical inspection machine according to claim 1, characterized in that: The flattening mechanism includes a roller and a shaping cylinder. The roller is arranged at the driving end of the shaping cylinder. The shaping cylinder drives the roller to rise and fall. The roller rolls relative to the first moving platform to flatten the FPC.

6. The fully automatic optical inspection machine according to claim 1, characterized in that: The second moving platform includes a second adsorption platform, a second moving axis and a test fixture. The second adsorption platform is used to adsorb the screen and move along the second moving axis. The test fixture is arranged on the second adsorption platform and is electrically connected to the FPC of the screen to light up the screen.

7. The fully automatic optical inspection machine according to claim 6, characterized in that: The detection module further includes a movable TP detection member, which is disposed above the second adsorption platform and contacts the screen to detect the touch sensitivity of the screen.

8. The fully automatic optical inspection machine according to claim 6, characterized in that: The detection module also includes a positioning member disposed between the first moving platform and the second adsorption platform. The positioning member takes a photo to determine the position of the screen FPC so that the screen FPC is docked with the test fixture.

9. The fully automatic optical inspection machine according to claim 1, characterized in that: The main detection component includes a third moving axis and a main detection camera. The main detection camera is arranged on the third moving axis and moves along the third moving axis to take pictures.

10. The fully automatic optical inspection machine according to claim 9, characterized in that: The side detection member includes a side detection bracket and a side detection camera, and the side detection camera is rotatably arranged on the side detection bracket to adjust the oblique shooting angle; The side detection brackets and the side detection cameras are provided in four numbers and are respectively located around the second mobile platform.

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