Liquid crystal module ACF interconnection defect screening and early warning device with high efficiency and low false alarm rate

Abstract

The invention discloses a high-efficiency low-false alarm rate liquid crystal module ACF interconnection defect screening and early warning device which comprises a supporting frame, a first conveying belt is fixedly installed at the top of the supporting frame, a guide assembly is arranged on the feeding side of the first conveying belt, and a rotating assembly is arranged at the top of the first conveying belt; one side of the rotating assembly is provided with a visual detection assembly used for detecting the interconnection position of the liquid crystal module ACF, the position, close to the discharging end, of the front side face of the first conveying belt is connected with a plurality of sets of second conveying belts, and the discharging sides of the second conveying belts are connected with storage assemblies. According to the automatic liquid crystal module detecting and storing device, the automatic process of feeding, detecting, classifying and storing the liquid crystal modules is achieved, errors and labor intensity caused by manual operation are reduced, and a large number of liquid crystal modules can be rapidly and accurately processed.

Description

Technical Field

[0001] The invention belongs to the technical field of detection of ACF interconnection of liquid crystal modules, and in particular relates to a liquid crystal module ACF interconnection defect screening and early warning device with high efficiency and low false alarm rate. Background Art

[0002] Liquid crystal module ACF interconnection refers to a technology that uses anisotropic conductive film to achieve electrical connection between different components during the manufacturing process of liquid crystal display modules. It can effectively avoid short circuit problems between different signal lines while achieving electrical connection, ensure accurate signal transmission between various components in the liquid crystal module, and tightly connect various components together to form a stable overall structure.

[0003] In the existing inspection of ACF interconnection of LCD modules, most of them rely on the direct observation of the appearance of the ACF interconnection by inspectors with the naked eye or with the help of a magnifying glass or a microscope. Therefore, the inspection efficiency is low. At the same time, the screening of defects is easily affected by the subjective factors of the inspectors. Different inspectors may have different judgment standards for the same defect due to differences in experience, vision, concentration, etc. Summary of the invention

[0004] The purpose of the present invention is to provide a liquid crystal module ACF interconnection defect screening and early warning device with high efficiency and low false alarm rate, so as to solve the technical defects of low detection efficiency and large influence of human factors in the existing technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A high-efficiency and low-false-alarm-rate liquid crystal module ACF interconnection defect screening and early warning device comprises a support frame, a first conveyor belt is fixedly installed on the top of the support frame, baffles are arranged on both sides of the front side of the first conveyor belt, a guide component for guiding the liquid crystal module is arranged on the feeding side of the first conveyor belt, a rotating component for rotating the liquid crystal module is arranged on the top of the first conveyor belt and on one side of the guiding component, a visual detection component for detecting the ACF interconnection of the liquid crystal module is arranged on one side of the rotating component, a plurality of groups of second conveyor belts are connected to the front side of the first conveyor belt and near the discharge end, the plurality of groups of second conveyor belts are respectively used to convey liquid crystal modules with different defects, storage components for collecting defective display modules are connected to the discharge sides of the second conveyor belts, a transfer component for transferring the display module to the second conveyor belt on the corresponding position is arranged on the top of the first conveyor belt and on one side of the visual detection component, and a control component for controlling the rotation component and the transfer component is arranged on one side of the support frame.

[0007] As a further solution of the present invention, the control component includes a square plate fixedly mounted on the surface of the baffle on one side of the first conveyor belt, a workstation is arranged on the top of the square plate, a DSP controller is fixedly mounted on the surface of the baffle on one side of the first conveyor belt, a signal input end of the DSP controller is electrically connected to a signal input end of the workstation, and an image recognition module is integrated inside the workstation.

[0008] The guide assembly comprises two groups of first guide bars which are fixedly installed on the feeding side of the first conveyor belt and fixedly installed between the two groups of baffles, and the two groups of first guide bars are arranged in an eight-shaped shape.

[0009] The rotating assembly includes a second mounting plate fixedly mounted on the top of one group of baffles, one end of the second mounting plate extends toward the middle of the first conveyor belt, a fifth servo motor is fixedly connected to the top of one end of the second mounting plate, a mounting tube is plugged into one end of the second mounting plate, the output shaft of the fifth servo motor is fixedly connected to the top of the mounting tube, a mounting column is slidably plugged into the inner cavity of the mounting tube, a first pneumatic suction cup is fixedly connected to the bottom of the mounting column, a moving part for moving the first pneumatic suction cup up and down is arranged on one side of the mounting tube, a position of the second mounting plate close to the feeding side of the first conveyor belt is arranged for detecting whether the orientation of the liquid crystal module is correct, a third proximity sensor is inlaid on the inner surface of one group of baffles and at a position corresponding to the second mounting plate, and the fifth servo motor is controlled by a DSP controller.

[0010] The visual inspection component includes a third mounting plate fixedly installed on the top of the two groups of baffles, a fixed frame is provided on one side of the third mounting plate, a second camera is provided inside the fixed frame, a signal output end of the second camera is electrically connected to a signal input end of the workstation through a wire, an anti-detachment component for preventing the second camera from detaching is provided inside the fixed frame, and an up-and-down moving component for moving the second camera up and down is provided in the middle of the third mounting plate.

[0011] The storage assembly includes limit plates fixedly installed on both sides of the second conveyor belt, a placement box is provided on the discharge side of each group of second conveyor belts, one side of each group of placement boxes is fixedly connected to the surfaces of the two groups of limit plates at corresponding positions, a second guide bar is fixedly connected between the two groups of limit plates at the same position and close to the placement box, the inner cavity of the storage box is provided with a support plate for holding the liquid crystal module, and one side of the storage box is provided with a displacement member for moving the support plate up and down.

[0012] The transfer assembly includes a guide plate arranged above the rear baffle plate, a long strip hole is opened on the top of the guide plate, and a third lead screw is rotatably connected to the inner cavity of the long strip hole, and a third servo motor is fixedly connected to one end of the rear side of the guide plate, and the output shaft of the third servo motor is keyed together, and a corresponding third nut seat is threadedly connected to the surface of the third lead screw, and an extension plate is fixedly connected to the bottom of the third nut seat on the side close to the second conveyor belt, and a second electric push rod is embedded in the bottom of one end of the extension plate, and a second pneumatic suction cup is fixedly connected to the telescopic end of the second electric push rod, and one group of baffles is provided with a lateral movement assembly for laterally moving the guide plate so as to move the liquid crystal modules with different defects to the corresponding second conveyor belt feeding side, and a first proximity sensor is embedded in the inner surface of one group of baffles and located between the guide plate and the third mounting plate, and the signal output end of the first proximity sensor is electrically connected to the signal input end of the DSP controller through a wire, and the third servo motor and the second electric push rod are controlled by the DSP controller.

[0013] As a preferred embodiment of the present invention, the moving part includes a square hole opened on one side surface of the mounting tube and arranged along the height, the mouth of the square hole is fixedly connected to a fixed block, the top of the fixed block is fixedly connected to a first electric push rod, the telescopic end of the first electric push rod is fixedly connected to a fixing bar, one end of the fixing bar passes through the square hole and is fixedly connected to the surface of the mounting column.

[0014] As a preferred solution of the present invention, the identification component includes a first mounting plate fixedly mounted on the top of the two groups of baffles, a mounting frame fixedly connected to the middle of one side of the first mounting plate, a first camera fixedly mounted in the inner cavity of the mounting frame, and a signal output end of the first camera electrically connected to a signal input end of the workstation through a wire.

[0015] As a preferred embodiment of the present invention, the displacement member includes a circular groove arranged at the height of the inner edge of the outer box wall of the placement box, the inner cavity of the circular groove is rotatably connected to a fourth lead screw, the lower outer bottom of the placement box is fixedly connected to a fourth servo motor, the output shaft of the fourth servo motor extends upward and is keyed to one end of the fourth lead screw, a connecting hole is provided on the inner wall of one side of the placement box, a connecting block is fixedly connected to the surface of one side of the fourth lead screw, one end of the connecting block passes through the connecting hole and is fixedly connected to the surface of the support plate, and a rubber pad is bonded to the surface of the support plate.

[0016] As a preferred embodiment of the present invention, the lateral movement component includes two groups of fixing plates fixedly installed on the surface of one group of baffles, a second lead screw is rotatably connected between the two groups of fixing plates, a second nut seat is threadedly connected to the surface of the second lead screw, the top of the second nut seat is fixedly connected to the bottom surface of the guide plate, a second servo motor is fixedly connected to the surface of one group of fixing plates, the second servo motor is controlled by a DSP controller, a first proximity sensor is embedded on the inner surface of one group of baffles and located between the two groups of fixing plates and at the corresponding position of each group of second conveyor belts, and the signal output end of the first proximity sensor is electrically connected to the signal input end of the DSP controller through a wire.

[0017] As a preferred embodiment of the present invention, the anti-slip component includes a strip groove opened on the inner wall surface of one side of the fixed frame, the inner cavity of the strip groove is provided with a pressure strip, the middle part of the pressure strip is rotatably inserted with a rotating rod, and a hand-tightening bolt is threadedly connected to the surface of one side of the fixed frame, and one end of the hand-tightening bolt is threadedly penetrated through the fixed frame and fixedly connected to one end of the rotating rod.

[0018] As a further preferred embodiment of the present invention, the up and down moving assembly includes a fixed box plugged into the middle surface of the third mounting plate, a first servo motor is fixedly installed on the top of the fixed box, a first lead screw is rotatably connected inside the fixed box, an output shaft of the first servo motor passes through the fixed box in opposite directions and is keyed to one end of the first lead screw, a corresponding first nut seat is threadedly connected to the surface of the first lead screw, and one side of the first nut seat is fixedly connected to the surface of the fixed frame.

[0019] As a further preferred embodiment of the present invention, a group of guide rods are fixedly connected between the two groups of fixing plates, and a guide ring is provided on the surface sliding sleeve of the guide rod. The top of the guide ring is fixedly connected to the bottom of the third servo motor, and one side of the guide ring is fixedly connected to one side surface of the second nut seat.

[0020] As a preferred solution of the present invention, a counting sensor for counting the liquid crystal modules entering the placement box is embedded on the inner wall of the limit plate on one side of each group of second conveyor belts and close to the discharge side, and an audible and visual alarm is fixedly connected to the top of the limit plate on one side of each group of second conveyor belts. The signal output end of the counting sensor is electrically connected to the signal input end of the DSP controller through a wire, and the signal input of the audible and visual alarm is electrically connected to the signal output end of the DSP controller through a wire.

[0021] Compared with the prior art, the present invention provides a high-efficiency and low-false-alarm rate liquid crystal module ACF interconnection defect screening and early warning device, which has the following beneficial effects:

[0022] 1. The device realizes the automated process of LCD modules from feeding to detection, classification and storage, greatly improving production efficiency, reducing errors and labor intensity caused by manual operation, and can quickly and accurately process a large number of LCD modules to meet the needs of modern industrial production for efficient and accurate detection. At the same time, the visual inspection component detects the ACF interconnection of the LCD module, which can timely discover product defects, and then transfers the LCD modules with different defects to the corresponding second conveyor belt through the transfer component, and finally collects them separately by the storage component. This precise defect identification and diversion mechanism facilitates the subsequent targeted processing and analysis of products with different defect types, which is conducive to improving product quality and production process level, reducing scrap rate and saving production costs.

[0023] 2. The device can detect the orientation of the LCD module quickly and accurately by identifying the setting of the components when the LCD module enters the rotating component area, and transmit the image information to the workstation for analysis and judgment. It can timely discover the orientation problem of the LCD module and provide an accurate basis for the adjustment of the rotating component.

[0024] 3. The device can quickly and accurately adjust the height of the second camera according to the actual size and detection requirements of the LCD module by setting up the up and down moving components. When facing LCD modules of different models or thicknesses, the operator can send instructions to the DSP controller through the workstation to control the first servo motor to drive the first screw to rotate, thereby driving the first nut seat and the fixed frame as well as the second camera to move up and down, so that the camera can always be in the best detection position, obtain clear and accurate image information, and improve the adaptability and detection accuracy of the visual inspection component. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only examples of the embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 The structure of the embodiment of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 2 The structure of the embodiment of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 3 is a schematic cross-sectional structural diagram of a second mounting plate in an embodiment of the present invention;

[0029] Figure 4 It is a schematic cross-sectional structural diagram of a fixed box in an embodiment of the present invention;

[0030] Figure 5 is a schematic cross-sectional structural diagram of a fixing frame in an embodiment of the present invention;

[0031] Figure 6 It is a schematic structural diagram of a rotating rod in an embodiment of the present invention;

[0032] Figure 7 is a schematic cross-sectional structural diagram of a guide plate in an embodiment of the present invention;

[0033] Figure 8 It is a schematic cross-sectional structural diagram of a placement box in an embodiment of the present invention.

[0034] Reference numerals:

[0035] 100, support frame; 101, first conveyor belt; 102, baffle;

[0036] 200, first guide strip;

[0037] 300, first mounting plate; 301, mounting frame; 302, first camera;

[0038] 400, second mounting plate; 401, fifth servo motor; 403, mounting cylinder; 405, mounting column; 406, first pneumatic suction cup; 407, square hole; 408, fixing bar; 409, first electric push rod; 410, fixing block;

[0039] 500, third mounting plate; 501, second camera; 502, fixing frame; 503, strip groove; 504, pressure strip; 505, hand-tightening bolt; 506, first servo motor; 507, first lead screw; 508, fixing box; 509, first nut seat; 510, rotating rod;

[0040] 600, third servo motor; 601, guide plate; 602, second servo motor; 603, second lead screw; 604, guide rod; 605, fixing plate; 606, long strip hole; 607, third nut seat; 608, third lead screw; 609, second electric push rod; 610, second pneumatic suction cup; 611, second nut seat; 612, guide ring; 613, extension plate;

[0041] 700, first proximity sensor; 701, second proximity sensor; 702, DSP controller; 703, square plate; 704, workstation; 705, counting sensor; 706, sound and light alarm; 707, third proximity sensor;

[0042] 800, second conveyor belt; 801, limit plate; 802, second guide strip; 803, placement box; 805, circular groove; 806, fourth servo motor; 808, fourth nut seat; 809, fourth lead screw; 810, connecting hole; 813, rubber pad; 814, support plate; 815, connecting block. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0044] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present invention.

[0045] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal connection of two components; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0046] See attached Figure 1-8As shown, an embodiment of the present invention is a high-efficiency, low-false-alarm rate LCD module ACF interconnection defect screening and early warning device, comprising a support frame 100, a first conveyor belt 101 is fixedly installed on the top of the support frame 100, baffles 102 are arranged on both sides of the front side of the first conveyor belt 101, a guide assembly for guiding the LCD module is arranged on the feeding side of the first conveyor belt 101, a rotating assembly for rotating the LCD module is arranged on the top of the first conveyor belt 101 and on one side of the guiding assembly, and a visual inspection device for detecting the ACF interconnection of the LCD module is arranged on one side of the rotating assembly. A detection component is provided, a plurality of groups of second conveyor belts 800 are connected to the front side of the first conveyor belt 101 and near the discharge end, and the plurality of groups of second conveyor belts 800 are respectively used to convey liquid crystal modules with different defects, and the discharge side of the second conveyor belts 800 are connected to a storage component for collecting defective display modules, a transfer component for moving the display module to the corresponding position on the second conveyor belt 800 is provided on the top of the first conveyor belt 101 and on one side of the visual detection component, and a control component for controlling the rotating component and the transfer component is provided on one side of the support frame 100.

[0047] The control component includes a square plate 703 fixedly mounted on the surface of a baffle 102 on one side of the first conveyor belt 101, a workstation 704 is arranged on the top of the square plate 703, a DSP controller 702 is fixedly mounted on the surface of a baffle 102 on one side of the first conveyor belt 101, a signal input end of the DSP controller 702 is electrically connected to a signal input end of the workstation 704, and an image recognition module is integrated inside the workstation 704.

[0048] The guide assembly includes two groups of first guide bars 200 fixedly installed on the feeding side of the first conveyor belt 101 and fixedly installed between the two groups of baffles 102. The two groups of first guide bars 200 are arranged in an eight-shaped shape.

[0049] The rotating assembly includes a second mounting plate 400 fixedly mounted on the top of one group of baffles 102, one end of the second mounting plate 400 extends toward the middle of the first conveyor belt 101, a fifth servo motor 401 is fixedly connected to the top of one end of the second mounting plate 400, a mounting cylinder 403 is plugged into one end of the second mounting plate 400, an output shaft of the fifth servo motor 401 is fixedly connected to the top of the mounting cylinder 403, a mounting column 405 is slidably plugged into the inner cavity of the mounting cylinder 403, a first pneumatic suction cup 406 is fixedly connected to the bottom of the mounting column 405, and the mounting cylinder A moving part for moving the first pneumatic suction cup 406 up and down is provided on one side of 403, and a position of the second mounting plate 400 close to the feeding side of the first conveyor belt 101 is provided with a component for detecting whether the orientation of the liquid crystal module is correctly identified, wherein a third proximity sensor 707 is embedded on the inner surface of one group of baffles 102 and at a position corresponding to the second mounting plate 400, the fifth servo motor 401 is controlled by the DSP controller 702, and the signal output end of the third proximity sensor 707 is electrically connected to the signal input end of the DSP controller 702 through a wire.

[0050] The visual inspection component includes a third mounting plate 500 fixedly mounted on the top of the two groups of baffles 102, a fixed frame 502 is provided on one side of the third mounting plate 500, a second camera 501 is provided inside the fixed frame 502, a signal output end of the second camera 501 is electrically connected to a signal input end of the workstation 704 through a wire, an anti-detachment component for preventing the second camera 501 from detaching is provided inside the fixed frame 502, and an up-and-down moving component for moving the second camera 501 up and down is provided in the middle of the third mounting plate 500.

[0051] The storage assembly includes limit plates 801 respectively fixedly installed on both sides of the second conveyor belt 800, and a placement box 803 is arranged on the discharge side of each group of second conveyor belts 800. One side of each group of placement boxes 803 is fixedly connected to the surfaces of two groups of limit plates 801 at corresponding positions, and a second guide bar 802 is fixedly connected between the two groups of limit plates 801 at the same position and close to the placement box 803. The inner cavity of the storage box is provided with a support plate 814 for holding the liquid crystal module, and one side of the storage box is provided with a displacement member for moving the support plate 814 up and down.

[0052] The transfer assembly includes a guide plate 601 disposed above the rear baffle plate 102, a long strip hole 606 is opened on the top of the guide plate 601, a third lead screw 608 is rotatably connected to the inner cavity of the long strip hole 606, a third servo motor 600 is fixedly connected to one end of the rear side of the guide plate 601, an output shaft of the third servo motor 600 is key-connected to the third lead screw 608, a corresponding third nut seat 607 is threadedly connected to the surface of the third lead screw 608, and the third nut seat 607 is fixedly connected to the bottom of one side close to the second conveyor belt 800 There is an extension plate 613, and a second electric push rod 609 is embedded at the bottom of one end of the extension plate 613. The telescopic end of the second electric push rod 609 is fixedly connected to a second pneumatic suction cup 610. One set of baffles 102 is provided with a lateral movement component for lateral movement of the guide plate 601 so as to move the liquid crystal modules with different defects to the corresponding feeding side of the second conveyor belt 800. The inner surface of one set of baffles 102 and located between the guide plate 601 and the third mounting plate 500 is embedded with a first proximity sensor 700. The signal of the first proximity sensor 700 The output end is electrically connected to the signal input end of the DSP controller 702 through a wire, and the third servo motor 600 and the second electric push rod 609 are controlled by the DSP controller 702. Through the arrangement of the first conveyor belt 101, the guide assembly, the rotating assembly, the visual inspection assembly, the transfer assembly, and multiple sets of second conveyor belts 800 and the storage assembly, an automated process from feeding to inspection, classification, and storage of liquid crystal modules is realized, which greatly improves production efficiency, reduces errors and labor intensity caused by manual operation, can quickly and accurately process a large number of liquid crystal modules, and meet the needs of modern industrial production for efficient and accurate inspection. At the same time, the visual inspection assembly detects the ACF interconnection of the liquid crystal module, and can promptly discover product defects, and then transfers the liquid crystal modules with different defects to the corresponding second conveyor belt 800 through the transfer assembly, and finally collects them separately by the storage assembly. This precise defect identification and diversion mechanism facilitates the subsequent targeted processing and analysis of products with different defect types, which is beneficial to improving product quality and production process level, reducing scrap rate, and saving production costs.

[0053] The model of the DSP702 controller is TMS320F2812, and the second camera 501 is any one of an area array camera, a line array camera, and a macro lens camera.

[0054] The moving part includes a square hole 407 which is opened on one side surface of the mounting tube 403 and is arranged along the height. A fixing block 410 is fixedly connected to the mouth of the square hole 407. A first electric push rod 409 is fixedly connected to the top of the fixing block 410. A fixing bar 408 is fixedly connected to the telescopic end of the first electric push rod 409. One end of the fixing bar 408 passes through the square hole 407 and is fixedly connected to the surface of the mounting column 405. The first electric push rod 409 is controlled by the DSP controller 702. Through the setting of the moving part, the mounting column 405 can be accurately controlled to slide up and down in the mounting tube 403, thereby realizing the position adjustment of the first pneumatic suction cup 406 in the vertical direction, so that the first pneumatic suction cup 406 can better adapt to liquid crystal modules of different thicknesses, ensure that the module can be stably adsorbed during the rotation adjustment process, and avoid the module from slipping or being damaged due to improper position of the suction cup.

[0055] The identification component includes a first mounting plate 300 fixedly mounted on the top of the two groups of baffles 102, a mounting frame 301 is fixedly connected to the middle of one side of the first mounting plate 300, a first camera 302 is fixedly mounted in the inner cavity of the mounting frame 301, and a signal output end of the first camera 302 is electrically connected to a signal input end of a workstation 704 through a wire. By setting the identification component, when the liquid crystal module enters the rotating component area, its orientation can be quickly and accurately detected, and the image information can be transmitted to the workstation 704 for analysis and judgment, so that the orientation problem of the liquid crystal module can be discovered in time, providing an accurate basis for the adjustment of the rotating component.

[0056] The first camera 302 is any one of an area array camera, a line array camera, and a macro lens camera.

[0057] The image recognition module in the workstation 704 pre-processes the original image captured by the second camera 501 or the first camera 302 to improve the image quality and enhance the recognizability of features so as to better extract features.

[0058] Extract information that can represent the essential characteristics of the image from the preprocessed image, such as edge detection, which determines the edge of the object by detecting the place where the pixel value changes dramatically in the image, so as to obtain the contour information of the ACF interconnection of the LCD module; texture feature extraction, analyze the grayscale distribution and periodic changes of the pixels in the image to identify whether the texture characteristics of the interconnection are normal; shape feature extraction, calculate the geometric shape characteristics of the object, such as area, perimeter, circularity, etc., to determine whether the shape of the LCD module meets the standards.

[0059] The features of the extracted image to be detected are matched and compared with the feature patterns stored in the model, and indicators such as similarity or distance are calculated to determine the category to which the image most likely belongs, that is, to determine whether the LCD module has defects and the type of defects. Based on the results of model matching, the image recognition module classifies the image and determines it as normal or belonging to a certain type of defect, or determines the orientation of the LCD module.

[0060] The displacement member includes a circular groove 805 provided at the height of the inner edge of the outer box wall of the placement box 803, the inner cavity of the circular groove 805 is rotatably connected to the fourth lead screw 809, the lower outer bottom of the placement box 803 is fixedly connected to the fourth servo motor 806, the output shaft of the fourth servo motor 806 extends upward and is keyed to one end of the fourth lead screw 809, a connecting hole 810 is provided on the inner wall of one side of the placement box 803, a connecting block 815 is fixedly connected to the surface of one side of the fourth lead screw 809, one end of the connecting block 815 passes through the connecting hole 810 and is fixedly connected to the surface of the support plate 814, a rubber pad 813 is bonded to the surface of the support plate 814, the fourth servo motor 806 is controlled by the DSP controller 702, and through the setting of the displacement member, in the process of storing the liquid crystal module, the position of the support plate 814 can be adjusted in time according to the actual stacking height of the modules in the placement box 803, so that the placement box 803 can make full use of the internal space and store more modules.

[0061] It is worth noting that the lateral movement component includes two groups of fixing plates 605 fixedly installed on the surface of one group of baffles 102, a second screw 603 is rotatably connected between the two groups of fixing plates 605, a second nut seat 611 is threadedly connected to the surface of the second screw 603, and the top of the second nut seat 611 is fixedly connected to the bottom surface of the guide plate 601, a second servo motor 602 is fixedly connected to the surface of one group of fixing plates 605, and the second servo motor 602 is controlled by the DSP controller 702, and the inner surface of one group of baffles 102 and located between the two groups of fixing plates 605 and at the corresponding position of each group of second conveyor belts 800 are inlaid with first proximity sensors 700, and the signal output ends of the first proximity sensors 700 are electrically connected to the signal input ends of the DSP controller 702 through wires. Through the setting of the lateral movement component, the guide plate 601 can be quickly and accurately moved to a position aligned with the feed side of the second conveyor belt 800 of the corresponding defect type according to the visual inspection results and the instructions of the DSP controller. The first proximity sensor 700 monitors the position of the guide plate 601 in real time and feeds back the signal to the DSP controller to ensure the movement accuracy of the guide plate 601, improve the positioning accuracy and work efficiency of the transfer component, and thus ensure the accuracy and reliability of the entire equipment in classifying and transferring different defective modules.

[0062] The anti-slip component includes a strip groove 503 opened on the inner wall surface of one side of the fixed frame 502, and the inner cavity of the strip groove 503 is provided with a pressure strip 504, and the middle part of the pressure strip 504 is rotatably inserted with a rotating rod 510, and a hand-tightening bolt 505 is threadedly connected to the surface of one side of the fixed frame 502, and one end of the hand-tightening bolt 505 is threadedly penetrated through the fixed frame 502 and fixedly connected to one end of the rotating rod 510. Through the provision of the anti-slip component, the second camera 501 is effectively prevented from detaching from the fixed frame 502 due to vibration and the like during the operation of the equipment, and at the same time, it is convenient to disassemble the second camera 501, thereby improving the convenience of maintenance.

[0063] The up-and-down moving assembly includes a fixed box 508 plugged into the middle surface of the third mounting plate 500, a first servo motor 506 is fixedly installed on the top of the fixed box 508, a first lead screw 507 is rotatably connected in the fixed box 508, an output shaft of the first servo motor 506 passes through the fixed box 508 in opposite directions and is key-connected to one end of the first lead screw 507, a corresponding first nut seat 509 is threadedly connected to the surface of the first lead screw 507, one side of the first nut seat 509 is fixedly connected to the surface of the fixed frame 502, and the first nut seat 509 is controlled by the DSP controller 702, and is moved up and down by the DSP controller 702. The setting of the mobile component can quickly and accurately adjust the height of the second camera 501 according to the actual size and detection requirements of the LCD module. When facing LCD modules of different models or thicknesses, the operator can send instructions to the DSP controller 702 through the workstation 704 to control the first servo motor 506 to drive the first screw 507 to rotate, thereby driving the first nut seat 509 and the fixed frame 502 and the second camera 501 to move up and down, so that the camera can always be in the best detection position to obtain clear and accurate image information, thereby improving the adaptability and detection accuracy of the visual detection component.

[0064] A group of guide rods 604 are fixedly connected between the two groups of fixing plates 605, and a guide ring 612 is slidingly sleeved on the surface of the guide rod 604. The top of the guide ring 612 is fixedly connected to the bottom of the third servo motor 600, and one side of the guide ring 612 is fixedly connected to the side surface of the second nut seat 611. Through the arrangement of the guide rod 604 and the guide ring 612, when the second servo motor 602 in the lateral movement assembly drives the second lead screw 603 to rotate, so that the second nut seat 611 drives the guide plate 601 to move laterally, the guide ring 612 slides along the guide rod 604, which can effectively prevent the second nut seat 611 from deflecting or shaking during the movement, thereby ensuring the smoothness and accuracy of the movement of the guide plate 601, and further ensuring that the transfer assembly can accurately transfer the liquid crystal module to the corresponding second conveyor belt 800, thereby improving the overall stability and transfer accuracy of the equipment.

[0065] A counting sensor 705 for counting the liquid crystal modules entering the placement box 803 is embedded in the inner wall of the limit plate 801 on one side of each group of second conveyor belts 800 and near the discharge side. An audible and visual alarm 706 is fixedly connected to the top of the limit plate 801 on one side of each group of second conveyor belts 800. The signal output end of the counting sensor 705 is electrically connected to the signal input end of the DSP controller 702 through a wire, and the signal input of the audible and visual alarm 706 is electrically connected to the signal output end of the DSP controller 702 through a wire. Through the setting of the counting sensor 705 and the audible and visual alarm 706, accurate monitoring of the number of liquid crystal modules entering the placement box 803 is achieved. The counting sensor 705 counts the number of modules entering the placement box 803 in real time and transmits the data to the DSP controller 702. When the number reaches a preset threshold, or several groups of defective liquid crystal modules appear continuously in the same period of time, the DSP controller 702 immediately controls the audible and visual alarm 706 to sound an alarm to remind the operator to deal with it in time and check the production line, thereby helping the operator to grasp the production situation in time.

[0066] The first proximity sensor 700 , the second proximity sensor 701 , and the third proximity sensor 707 are all Omron E2B series proximity sensors, and the counting sensor 705 is PM3003SN.

[0067] When the embodiment of the present invention is used, the liquid crystal module is placed on the feeding side of the first conveyor belt 101, and the two groups of first guide strips 200 are arranged in an eight-shaped shape. When the liquid crystal module enters, the gradually narrowing shape characteristics are utilized to accurately guide the liquid crystal module.

[0068] The liquid crystal module is transported forward along with the operation of the first conveyor belt 101, and the first camera 302 detects the orientation of the liquid crystal module and quickly converts the captured image information into an electrical signal, which is then transmitted to the workstation 704 through a wire. After receiving the signal, the workstation 704 uses its internally integrated image recognition module to analyze and determine whether the orientation of the liquid crystal module meets the requirements of subsequent detection and processing.

[0069] If it is determined that the orientation of the LCD module is incorrect, the DSP controller 702 will control the telescopic end of the first electric push rod 409 to move, thereby driving the mounting column 405 to slide downward, so that the first pneumatic suction cup 406 at the bottom absorbs the LCD module. Then the DSP controller 702 controls the first servo motor 506 to rotate, driving the mounting column 405 slidably inserted in its inner cavity and the first pneumatic suction cup 406 at the bottom of the mounting column 405 to rotate together through the connecting tube, thereby adjusting the orientation of the LCD module.

[0070] After the orientation of the LCD module is adjusted, it continues to be transported forward with the first conveyor belt 101, and soon arrives at the location of the visual inspection component. The first servo motor 506 on the top of the fixed box 508 is started, and its output shaft passes through the fixed box 508 in opposite directions and is keyed to one end of the first lead screw 507. As the first servo motor 506 drives the first lead screw 507 to rotate, the first nut seat 509 threadedly connected thereto will drive the fixed frame 502 and the second camera 501 inside the fixed frame 502 to move in the vertical direction until the second camera 501 reaches a suitable height position, so that it can clearly and accurately capture images of the ACF interconnection of the LCD module. The captured image information will be immediately transmitted to the workstation 704 through the wire. The workstation 704 again uses the internal image recognition module to perform detailed analysis and processing on these images to accurately determine whether there are defects at the ACF interconnection of the LCD module and the specific type of defects.

[0071] After the visual inspection of the liquid crystal modules is completed, the qualified liquid crystal modules are conveyed away from the discharge side of the first conveyor belt 101 .

[0072] When a defective LCD module is determined to be moved to the position corresponding to the first proximity sensor 700, the DSP controller 702 controls the second electric push rod 609 to extend, thereby driving the second suction cup to adsorb the LCD module, and then the DSP controller 702 controls the second servo motor 602 to rotate, and the second nut seat 611 threadedly connected thereto will move laterally under the rotation of the lead screw. Since the top of the second nut seat 611 is fixedly connected to the bottom surface of the guide plate 601, the guide plate 601 will also move laterally, thereby accurately moving the guide plate 601 to a position aligned with the feed side of the second conveyor belt 800 of the corresponding defect type.

[0073] When the corresponding second proximity sensor 701 detects the liquid crystal module, the DSP controller 702 controls the third servo motor 600 to rotate, and the third nut seat 607 threadedly connected to the surface of the third lead screw 608 will move along the third lead screw 608 in the long strip hole 606, and at the same time the extension plate 613 moves synchronously, thereby accurately transferring the liquid crystal module to the corresponding second conveyor belt 800.

[0074] The defective LCD modules transferred to the different second conveyor belts 800 will move along the conveyor belts toward the discharge side, and will be guided by the second guide strips 802 to enter the placement box 803 accurately. The counting sensor 705 will record the number of LCD modules and transmit it to the DSP controller 702 through a wire. Subsequently, the DSP controller 702 will control the fourth servo motor 806 at the corresponding position to rotate a certain distance, thereby driving the corresponding side support plate 814 to descend through the fourth nut seat 808, thereby ensuring that the height of the LCD module is lower than the conveying surface of the second conveyor belt 800.

[0075] The counting sensor 705 realizes accurate counting of the number of products with different defective types. Once the counted number reaches the threshold value pre-set in the DSP controller 702, or several groups of defective LCD modules appear continuously in the same period of time, the DSP controller 702 will immediately control the sound and light alarm 706 fixedly connected to the top of the limit plate 801 on one side of each group of second conveyor belts 800 to emit sound and light signals, promptly reminding the operator to come and check and take corresponding measures.

[0076] In summary, the present invention realizes the automated process of liquid crystal modules from feeding to detection, classification, and storage through the first conveyor belt 101, the guide component, the rotating component, the visual inspection component, the transfer component, and the arrangement of multiple groups of second conveyor belts 800 and storage components, which greatly improves the production efficiency, reduces the errors and labor intensity caused by manual operation, can quickly and accurately process a large number of liquid crystal modules, and meet the needs of modern industrial production for efficient and accurate detection. At the same time, the visual inspection component detects the ACF interconnection of the liquid crystal module, and can promptly discover product defects. The liquid crystal modules with different defects are then transferred to the corresponding second conveyor belt 800 through the transfer component, and are collected separately by the storage component. The above-mentioned precise defect identification and diversion mechanism facilitates the subsequent targeted processing and analysis of products with different defect types, which is beneficial to improving product quality and production process level, reducing scrap rate, and saving production costs.

[0077] The above shows and describes the basic principles of the present invention. The above are only preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only intended to illustrate the principles of the present invention. Without departing from the scope of the present invention, any modifications, equivalent substitutions and improvements made within the spirit and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-performance, low-false-alarm rate liquid crystal module ACF interconnection defect screening and early warning device, comprising a support frame (100), characterized in that: A first conveyor belt (101) is fixedly mounted on the top of the support frame (100); baffles (102) are provided on both sides of the front side of the first conveyor belt (101); a guide component for guiding the liquid crystal module is provided on the feeding side of the first conveyor belt (101); a rotating component for rotating the liquid crystal module is provided on the top of the first conveyor belt (101) and on one side of the guide component; a visual inspection component for inspecting the ACF interconnection of the liquid crystal module is provided on one side of the rotating component; and a front side of the first conveyor belt (101) and close to the guide component is provided. A plurality of groups of second conveyor belts (800) are connected to the discharge end, and the plurality of groups of second conveyor belts (800) are respectively used to convey liquid crystal modules with different defects. The discharge side of each of the second conveyor belts (800) is connected to a storage component for collecting display modules with defects. A transfer component for transferring the display module to a corresponding position on the second conveyor belt (800) is provided on the top of the first conveyor belt (101) and on one side of the visual inspection component. A control component for controlling a rotating component and a transfer component is provided on one side of the support frame (100).

2. According to claim 1, a high-performance, low-false-alarm rate LCD module ACF interconnection defect screening and early warning device is characterized by: The control component comprises a square plate (703) fixedly mounted on the surface of a baffle plate (102) on one side of the first conveyor belt (101), a workstation (704) being arranged on the top of the square plate (703), a DSP controller (702) being fixedly mounted on the surface of a baffle plate (102) on one side of the first conveyor belt (101), a signal input end of the DSP controller (702) being electrically connected to a signal input end of the workstation (704), and an image recognition module being integrated inside the workstation (704); The guide assembly comprises two groups of first guide bars (200) fixedly mounted on the feeding side of the first conveyor belt (101) and fixedly mounted between two groups of baffles (102), the two groups of first guide bars (200) being arranged in an eight-shaped shape; The rotating assembly comprises a second mounting plate (400) fixedly mounted on the top of one group of the baffles (102), one end of the second mounting plate (400) extending toward the middle of the first conveyor belt (101), a fifth servo motor (401) is fixedly connected to the top of one end of the second mounting plate (400), a mounting tube (403) is plugged into one end of the second mounting plate (400), an output shaft of the fifth servo motor (401) is fixedly connected to the top of the mounting tube (403), a mounting column (405) is slidably plugged into the inner cavity of the mounting tube (403), and the mounting tube (403) is provided with a plurality of mounting posts (405) and a plurality of mounting posts (405) are provided. A first pneumatic suction cup (406) is fixedly connected to the bottom of the mounting column (405); a moving part for moving the first pneumatic suction cup (406) up and down is arranged on one side of the mounting cylinder (403); a component for detecting whether the orientation of the liquid crystal module is correct is arranged at a position of the second mounting plate (400) close to the feeding side of the first conveyor belt (101); a third proximity sensor (707) is embedded on the inner surface of one group of the baffles (102) and at a position corresponding to the second mounting plate (400); and the fifth servo motor (401) is controlled by a DSP controller (702); The visual inspection component comprises a third mounting plate (500) fixedly mounted on the top of the two groups of baffles (102); a fixing frame (502) is arranged on one side of the third mounting plate (500); a second camera (501) is arranged inside the fixing frame (502); a signal output end of the second camera (501) is electrically connected to a signal input end of a workstation (704) via a wire; an anti-detachment component for preventing the second camera (501) from detaching is arranged inside the fixing frame (502); and an up-and-down moving component for moving the second camera (501) up and down is arranged in the middle of the third mounting plate (500); The storage assembly comprises limit plates (801) respectively fixedly mounted on both sides of the second conveyor belt (800); a placement box (803) is provided on the discharge side of each group of the second conveyor belt (800); one side of each group of the placement boxes (803) is fixedly connected to the surfaces of two groups of the limit plates (801) at corresponding positions; a second guide bar (802) is fixedly connected between the two groups of the limit plates (801) at the same position and close to the placement boxes (803); a support plate (814) for holding the liquid crystal module is provided in the inner cavity of the storage box; and a displacement member for moving the support plate (814) up and down is provided on one side of the storage box; The transfer assembly comprises a guide plate (601) arranged above the rear baffle plate (102), a long strip hole (606) being provided on the top of the guide plate (601), a third lead screw (608) being rotatably connected to the inner cavity of the long strip hole (606), a third servo motor (600) being fixedly connected to one end of the rear side of the guide plate (601), an output shaft of the third servo motor (600) being key-connected to the third lead screw (608), a corresponding third nut seat (607) being threadedly connected to the surface of the third lead screw (608), an extension plate (613) being fixedly connected to the bottom of one side of the third nut seat (607) close to the second conveyor belt (800), a second motor being embedded in the bottom of one end of the extension plate (613). A push rod (609), the telescopic end of the second electric push rod (609) is fixedly connected to a second pneumatic suction cup (610), one group of the baffles (102) is provided with a lateral movement component for laterally moving the guide plate (601) so as to move the liquid crystal modules with different defects to the corresponding feeding side of the second conveyor belt (800), one group of the baffles (102) is embedded with a first proximity sensor (700) on the inner surface and located between the guide plate (601) and the third mounting plate (500), the signal output end of the first proximity sensor (700) is electrically connected to the signal input end of the DSP controller (702) through a wire, and the third servo motor (600) and the second electric push rod (609) are controlled by the DSP controller (702).

3. The high-performance, low-false-alarm rate LCD module ACF interconnection defect screening and early warning device according to claim 2 is characterized in that: The moving part comprises a square hole (407) opened on one side surface of the mounting tube (403) and arranged along the height, the mouth of the square hole (407) is fixedly connected to a fixing block (410), the top of the fixing block (410) is fixedly connected to a first electric push rod (409), the telescopic end of the first electric push rod (409) is fixedly connected to a fixing bar (408), and one end of the fixing bar (408) passes through the square hole (407) and is fixedly connected to the surface of the mounting column (405).

4. The high-performance, low-false-alarm rate LCD module ACF interconnection defect screening and early warning device according to claim 2 is characterized in that: The identification component comprises a first mounting plate (300) fixedly mounted on the top of two groups of baffles (102); a mounting frame (301) is fixedly connected to the middle of one side of the first mounting plate (300); a first camera (302) is fixedly mounted in the inner cavity of the mounting frame (301); a signal output end of the first camera (302) is electrically connected to a signal input end of a workstation (704) via a wire.

5. The high-performance, low-false-alarm rate LCD module ACF interconnection defect screening and early warning device according to claim 2, characterized in that: The displacement member comprises a circular groove (805) provided at a height of an inner wall of an outer side of the placement box (803); a fourth lead screw (809) is rotatably connected to the inner cavity of the circular groove (805); a fourth servo motor (806) is fixedly connected to the bottom of the lower outer side of the placement box (803); an output shaft of the fourth servo motor (806) extends upward and is key-connected to one end of the fourth lead screw (809); a connecting hole (810) is provided on an inner wall of one side of the placement box (803); a connecting block (815) is fixedly connected to a surface of one side of the fourth lead screw (809); one end of the connecting block (815) passes through the connecting hole (810) and is fixedly connected to the surface of a support plate (814); a rubber pad (813) is bonded to the surface of the support plate (814).

6. The high-performance, low-false-alarm rate LCD module ACF interconnection defect screening and early warning device according to claim 2, characterized in that: The lateral movement assembly comprises two groups of fixing plates (605) fixedly mounted on the surface of one group of the baffles (102); a second lead screw (603) is rotatably connected between the two groups of fixing plates (605); a second nut seat (611) is threadedly connected to the surface of the second lead screw (603); the top of the second nut seat (611) is fixedly connected to the bottom surface of the guide plate (601); a second servo motor (602) is fixedly connected to the surface of one group of the fixing plates (605); the second servo motor (602) is controlled by a DSP controller (702); a first proximity sensor (700) is embedded on the inner surface of one group of the baffles (102) and located between the two groups of fixing plates (605) and at the corresponding position of each group of the second conveyor belts (800); a signal output end of the first proximity sensor (700) is electrically connected to a signal input end of the DSP controller (702) through a wire.

7. The high-performance, low-false-alarm rate LCD module ACF interconnection defect screening and early warning device according to claim 2, characterized in that: The anti-dropping member comprises a strip groove (503) formed on the inner wall surface of one side of the fixing frame (502); a pressure strip (504) is provided in the inner cavity of the strip groove (503); a rotating rod (510) is rotatably inserted in the middle of the pressure strip (504); a hand-tightening bolt (505) is threadedly connected to the surface of one side of the fixing frame (502); one end of the hand-tightening bolt (505) is threadedly inserted through the fixing frame (502) and is fixedly connected to one end of the rotating rod (510).

8. The high-performance, low-false-alarm rate LCD module ACF interconnection defect screening and early warning device according to claim 5 is characterized by: The up-and-down moving assembly comprises a fixed box (508) plugged into the middle surface of the third mounting plate (500), a first servo motor (506) is fixedly mounted on the top of the fixed box (508), a first lead screw (507) is rotatably connected inside the fixed box (508), an output shaft of the first servo motor (506) passes through the fixed box (508) in opposite directions and is key-connected to one end of the first lead screw (507), a corresponding first nut seat (509) is threadedly connected to the surface of the first lead screw (507), and one side of the first nut seat (509) is fixedly connected to the surface of the fixed frame (502).

9. The high-performance, low-false-alarm rate LCD module ACF interconnection defect screening and early warning device according to claim 6, characterized in that: A group of guide rods (604) are fixedly connected between the two groups of fixing plates (605); a guide ring (612) is provided on the surface of the guide rod (604) for sliding sleeve; the top of the guide ring (612) is fixedly connected to the bottom of the third servo motor (600); and one side of the guide ring (612) is fixedly connected to a side surface of the second nut seat (611).

10. The high-performance, low-false-alarm rate LCD module ACF interconnection defect screening and early warning device according to claim 2, characterized in that: A counting sensor (705) for counting the number of liquid crystal modules entering the placement box (803) is embedded in the inner wall of the limit plate (801) on one side of each group of the second conveyor belts (800) and at a position close to the discharge side. An audible and visual alarm (706) is fixedly connected to the top of the limit plate (801) on one side of each group of the second conveyor belts (800). The signal output end of the counting sensor (705) is electrically connected to the signal input end of the DSP controller (702) through a wire, and the signal input of the audible and visual alarm (706) is electrically connected to the signal output end of the DSP controller (702) through a wire.

Images