Detection device and detection method for liquid crystal display module

Abstract

The invention relates to the field of liquid crystal display module detection, in particular to a liquid crystal display module detection device and detection method.The liquid crystal display module detection device comprises a base, supporting plates are symmetrically and fixedly connected to the top end of the right side of the base, and arc-shaped connecting plates are fixedly connected to the top ends of the supporting plates; the two positioning seats are symmetrically distributed on the two sides of the bottom of the to-be-detected screen, a first limiting wheel and a second limiting wheel are symmetrically arranged at the two ends of the top of each positioning seat, and the side walls of the positioning seats are rotationally connected to the side wall of the supporting plate with the circle center of the first limiting wheel as the axis point; through the arrangement of the positioning seat, the first limiting wheel, the second limiting wheel and the limiting rod, the circle center of the detection mechanism and the circle center of the to-be-detected screen can coincide, the detection mechanism can irradiate curved screens and collect images in the cambered surface radius directions of the curved screens with different curvatures, the rotating point of the detection mechanism does not need to be manually adjusted, and the detection efficiency is improved. The detection difficulty is reduced, and the detection precision is improved.

Description

Technical Field

[0001] The present invention relates to the field of liquid crystal display module detection, and in particular to a liquid crystal display module detection device and a detection method. Background Art

[0002] At present, LCD screens are widely used due to their advantages in display effect and power consumption. Curved screens are a new generation of LCD screens. Their curvature can make the distance from the screen to the eyes equal, thus bringing a better visual experience.

[0003] Compared with ordinary LCD screens, curved screens have higher technical content and more diverse problems in the production process. In the actual production process, curved display screens may cause scratches, spots or even cracks on the surface of the display during assembly or transportation, and these defects will affect the display effect and user experience, so it is necessary to detect the surface defects of the display.

[0004] For example, the invention patent with publication number CN115371966B discloses a curved display screen defect detection device, including a bottom plate and a top plate fixed to the top of the bottom plate by a bracket, and also including a fixing component for fixing the display screen; a swing arm component, which is installed at the bottom of the top plate and can swing back and forth, and the rotation point of the swing arm component coincides with the center of the arc surface of the display screen; a detection component, which is installed below the swing arm component and irradiates and captures images of the display screen along the radius direction of the arc surface of the display screen; the swing arm component includes a swing arm and an extension arm connected to each other, the swing arm is rotatably installed below the top plate through a mounting shaft, and a slide groove is provided on the outer wall of the swing arm.

[0005] Regarding the above case, in the process of inspecting the curved screen, since the corresponding curvatures of different models of curved screens are different, the lower the curvature value, the larger the curvature of the curved screen. Therefore, in the process of inspecting curved screens with different curvatures, it is difficult for the rotation point of the swing component to coincide with the center of the arc of the curved screen, which makes it difficult for the inspection component to illuminate and capture images of the curved screen along the radius of the arc of the curved screen, which easily reduces the inspection accuracy.

[0006] To this end, the present invention proposes a detection device and a detection method for a liquid crystal display module to solve the above-mentioned problem. Summary of the invention

[0007] In order to achieve the above objectives, the technical solution adopted by the present invention is: a detection device for a liquid crystal display module, comprising: A base, wherein a support plate is symmetrically fixedly connected to the top right side of the base, and an arc-shaped connecting plate is fixedly connected to the top of the support plate; Two positioning seats, the two positioning seats are symmetrically distributed on both sides of the bottom of the screen to be detected, the first limiting wheel and the second limiting wheel are symmetrically arranged at both ends of the top of the positioning seat, and the side wall of the positioning seat is rotatably connected to the side wall of the support plate with the center of the first limiting wheel as the axis point; Two limit rods, the bottom ends of the two limit rods are respectively fixedly connected to the two side walls of the positioning seat, the top ends of the two limit rods are symmetrically slidably connected to the bottom of the arc-shaped connecting plate, the two limit rods are intersected with each other, and the side walls of the two limit rods are both provided with a first sliding groove; Two first sliding blocks, the two first sliding blocks are slidably connected in the two first sliding grooves respectively, and the first sliding blocks are located at the intersection of the two limiting rods; A connecting rod, both ends of which are rotatably connected to the two first sliding blocks respectively; A detection mechanism, wherein the detection mechanism is arranged on the connecting rod and rotates with the connecting rod as the center of a circle to perform flaw detection on the surface of the screen to be detected; A rotation drive mechanism, the rotation drive mechanism is used to drive the positioning seat to rotate so that the second limit wheel contacts the bottom of the screen to be detected. After the second limit wheel contacts the bottom of the screen to be detected, the intersection position of the two limit rods is the center position of the screen to be detected; Specifically, in the prior art, during the inspection of the curved screen, since the corresponding curvatures of the curved screens of different models are different, the lower the curvature value, the larger the curvature of the curved screen. Therefore, during the inspection of the curved screens with different curvatures, it is difficult for the rotation point of the swing component to coincide with the center of the arc of the curved screen, which makes it difficult for the inspection component to irradiate and capture images of the curved screen along the arc radius direction of the curved screen, increasing the inspection difficulty. The technical solution can solve the above problems. The specific operation is as follows: first, the screen to be inspected is placed on the positioning seat, and the screen to be inspected is auxiliary supported by two first limiting wheels, and then the rotation drive mechanism is started, so that the positioning seat rotates with the center of the first limiting wheel until the second limiting wheel contacts the bottom of the screen to be inspected, and the rotation drive mechanism is closed; During the rotation of the positioning seat, the limit rod rotates synchronously, so that the intersection of the two limit rods moves upward, thereby causing the connecting rod to move upward until the second limit wheel contacts the bottom of the screen to be detected. After the rotation drive mechanism is closed, the position of the connecting rod is the center of the circle of the screen to be detected, which is conducive to the coincidence of the detection mechanism with the center of the circle of the screen to be detected, so that the detection mechanism can irradiate and capture images of the curved screen along the arc radius direction of the curved screen with different curvatures, without manually adjusting the rotation point of the detection mechanism, reducing the detection difficulty and helping to improve the detection accuracy.

[0008] Preferably, it also includes: A first shell, wherein the first shell passes through the limit rod and is slidably connected to the limit rod, a first spring is fixedly connected inside the first shell, an end of the first spring is fixedly connected to a first push rod, an end of the first push rod is fixedly connected to a limit plate, and the limit plate is located at the side of the screen to be detected; An arc-shaped driving plate is fixedly connected to the side wall of the supporting plate, an arc-shaped driving inclined groove is provided on the surface of the arc-shaped driving plate, and a connecting pin is fixedly connected to the side wall of the first shell body, and the connecting pin is slidably connected in the arc-shaped driving inclined groove.

[0009] Preferably, the detection mechanism comprises: A T-shaped mounting frame, wherein a second slide groove is provided on a side wall of a vertical section of the T-shaped mounting frame, a second slider is slidably connected in the second slide groove, and the second slider is fixedly connected to a connecting rod; An image acquisition component, which is arranged at the bottom of the transverse section of the T-shaped mounting frame and is used to acquire image data of the surface of the screen to be detected; A third slide groove, wherein the third slide groove is provided on the side wall of the support plate, a third slider is slidably connected in the third slide groove, and the third slider is rotatably connected to the connecting rod; A first motor, wherein the first motor is fixedly connected to a mounting seat, the mounting seat is slidably connected to an outer side wall of the support plate, and an output shaft of the first motor is fixedly connected to an end of a connecting rod; The cylinder is fixedly connected to the top of the second sliding block, and the top of the telescopic rod of the cylinder is fixedly connected to the T-shaped mounting frame.

[0010] Preferably, the image acquisition component comprises: A fixing block, the fixing block being fixedly connected to the bottom of the transverse section of the T-shaped mounting frame; Two second shells, the two second shells are symmetrically fixedly connected to the outer side wall of the fixed block; A second push rod, wherein the second push rod is slidably connected in the housing, an end of the second push rod is fixedly connected to a mounting block, and an industrial camera and an illumination lamp are arranged at the bottom of the mounting block; A ventilation hose, one end of which is fixedly connected to the first shell, and the other end of which is fixedly connected to the second shell; When the positioning plate is positioning the side wall of the inspection screen, the first shell is compressed by the first push rod to generate high-pressure gas, which is transported to the second shell through the ventilation hose, thereby adjusting the second push rod to push the mounting block to adjust the industrial camera to the specified position.

[0011] Preferably, it also includes: A plurality of fourth sliders and a plurality of second sliders are symmetrically slidably connected to the inner side wall of the positioning seat, and both ends of the first limiting wheel and the second limiting wheel are rotatably connected to the fourth sliders at corresponding positions; A first pressure sensor, wherein the first pressure sensor is disposed in the positioning seat and connected to a fourth slider at the end of the first limiting wheel; The second pressure sensor is arranged in the positioning seat, and the first pressure sensor is connected to the fourth sliding block at the end of the second limiting wheel.

[0012] In addition, to solve the above problems, the present invention also proposes a method for detecting a liquid crystal display module, which further includes: A controller, the controller being disposed on the support plate and being used for opening and closing the rotary drive mechanism; The detection method of the liquid crystal display module includes: The controller receives first request information sent by the first pressure sensor, where the first request information is generated when the pressure value acquired by the first pressure sensor increases; The controller generates first control information based on the first request information, wherein the first control information is used to start the rotation drive mechanism; The controller sends the first control information to the rotation drive mechanism, so that the rotation drive mechanism starts and drives the positioning seat to rotate, so that the second limiting wheel contacts the bottom of the screen to be detected; The controller receives second request information sent by the second pressure sensor, where the second request information is generated when the pressure value acquired by the second pressure sensor increases; The controller generates second control information based on the second request information, wherein the second control information is used to turn off the rotation drive mechanism; The controller sends the second control information to the rotary drive mechanism, so that the rotary drive mechanism is closed, the positioning seat stops rotating, and the first limiting wheel and the second limiting wheel are fully in contact with the bottom of the screen to be detected, so that the connecting rod is positioned at the center of the screen to be detected; Specifically, the controller receives the first request information sent by the first pressure sensor, then generates the first control information based on the first request information, and then sends the first control information to the rotation drive mechanism to start the rotation drive mechanism and drive the positioning seat to rotate so that the second limiting wheel contacts the bottom of the screen to be detected; The controller receives the second request information sent by the second pressure sensor, and then the controller generates second control information based on the second request information, wherein the second control information is used to turn off the rotation drive mechanism, and then the controller sends the second control information to the rotation drive mechanism, so that the rotation drive mechanism is turned off, the positioning seat stops rotating, and the first limit wheel and the second limit wheel are in full contact with the bottom of the screen to be detected, so that the connecting rod is positioned at the center of the screen to be detected, and then the connecting stem is driven to rotate by the first motor, so that the T-shaped mounting frame rotates, and the image acquisition component irradiates and acquires images of the curved screen along the radius direction of the curved surface of the curved screen, thereby improving the detection accuracy.

[0013] Specifically, the specific method of using the first pressure sensor includes: The first pressure sensor acquires the pressure value given by the first limiting wheel, and when the pressure value increases to a specified value, the first pressure sensor generates a first request information; The first pressure sensor sends first request information to the controller to request the controller to control the rotation drive mechanism to start.

[0014] Specifically, the specific method of using the second pressure sensor includes: The second pressure sensor acquires the pressure value given by the second limiting wheel, and when the pressure value increases to a specified value, the second pressure sensor generates a second request information; The second pressure sensor sends second request information to the controller to request the controller to control the rotation driving mechanism to close.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a positioning seat, a first limiting wheel, a second limiting wheel and a limiting rod, which is conducive to aligning the center of the detection mechanism with the screen to be detected, so that the detection mechanism can illuminate and capture images of the curved screen along the arc radius direction of the curved screen with different curvatures, without manually adjusting the rotation point of the detection mechanism, thereby reducing the detection difficulty and helping to improve the detection accuracy.

[0016] 2. The present invention provides a first shell and a first push rod. During the rotation of the positioning seat, the first shell slides along the arc-shaped driving inclined groove. Driven by the arc-shaped driving inclined groove, the first shell drives the first push rod to approach the screen to be detected, and clamps and positions the screen to be detected. On the one hand, it is beneficial to push and adjust the screen to be detected to the middle position, and on the other hand, it improves the stability of the screen to be detected during the detection process.

[0017] 3. The present invention sets a second shell and a second push rod. During the process of the first shell and the first push rod pushing and adjusting the screen to be detected, the first push rod squeezes the screen to be detected, moves along the first shell, and compresses the air in the first shell, so that high pressure is generated in the first shell. Then, the air in the first shell is transported to the second shell through the ventilation hose, thereby pushing and adjusting the two industrial cameras to move away from each other and moving the industrial cameras to the side of the screen to be detected, so that the two industrial cameras can be adapted and adjusted according to the size of the screen to be detected, so as to detect the entire screen to be detected, reducing the detection blind spots. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a flow chart of the detection method of the present invention; Figure 2 The overall structure of the present invention is shown in FIG. Figure 1 ; Figure 3 The overall structure of the present invention is shown in FIG. Figure 2 ; Figure 4 It is a schematic diagram of the positional relationship between the screen to be detected and the positioning seat in the present invention; Figure 5 It is a schematic diagram of the connection between the limit rod and the positioning seat in the present invention; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 It is a connection schematic diagram of the connecting rod and the T-shaped mounting frame in the present invention; Figure 8 It is a schematic diagram of the connection between the T-shaped mounting frame and the image acquisition component in the present invention; Fig. 9 It is a cross-sectional view of the positioning seat in the present invention; Fig.10 is a cross-sectional view of the first shell in the present invention; Fig.11 is a flow chart of a method for using the first pressure sensor in the present invention; Fig.12 This is a flow chart of the method for using the second pressure sensor in the present invention.

[0019] In the figure: base 1, controller 2, screen to be detected 3, support plate 4, arc connecting plate 5, positioning seat 6, rotating shaft 7, first limiting wheel 8, second limiting wheel 9, limiting rod 10, first slide 11, first slider 12, connecting rod 13, first shell 14, first spring 15, first push rod 16, limiting plate 17, arc driving plate 18, arc driving inclined groove 19, T-shaped mounting frame 20, second slide 21, second slider 22, third slide 23, third slider 24, first motor 25, cylinder 26, fixing block 27, second shell 28, second push rod 29, mounting block 30, industrial camera 31, irradiation lamp 32, ventilation hose 33, fourth slider 34, first pressure sensor 35, second pressure sensor 36, second motor 37, belt 38, guide rail 39, transport seat 40, flip support arm 41, elastic pad 42, hydraulic cylinder 43. DETAILED DESCRIPTION

[0020] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0021] like Figures 2 to 10 A detection device for a liquid crystal display module is shown, comprising: A base 1, a support plate 4 is symmetrically fixedly connected to the top right side of the base 1, and an arc-shaped connecting plate 5 is fixedly connected to the top of the support plate 4; Two positioning seats 6, the two positioning seats 6 are symmetrically distributed on both sides of the bottom of the screen to be detected 3, the first limiting wheel 8 and the second limiting wheel 9 are symmetrically arranged at both ends of the top of the positioning seat 6, and the side wall of the positioning seat 6 is rotatably connected to the side wall of the support plate 4 with the center of the first limiting wheel 8 as the axis point; Two limit rods 10, the bottom ends of the two limit rods 10 are fixedly connected to the side walls of the two positioning seats 6 respectively, the top ends of the two limit rods 10 are symmetrically slidably connected to the bottom of the arc-shaped connecting plate 5, the two limit rods 10 are cross-shaped, and the side walls of the two limit rods 10 are both provided with a first sliding groove 11; Two first sliding blocks 12, the two first sliding blocks 12 are slidably connected in the two first sliding grooves 11 respectively, and the first sliding blocks 12 are located at the intersection of the two limiting rods 10; A connecting rod 13, both ends of which are rotatably connected to the two first sliding blocks 12; The detection mechanism is arranged on the connecting rod 13, and the detection mechanism rotates with the connecting rod 13 as the center to perform flaw detection on the surface of the screen 3 to be detected; The rotary drive mechanism is used to drive the positioning seat 6 to rotate so that the second limiting wheel 9 contacts the bottom of the screen 3 to be detected. After the second limiting wheel 9 contacts the bottom of the screen 3 to be detected, the intersection position of the two limiting rods 10 is the center position of the screen 3 to be detected; Specifically, in the prior art, during the detection of the curved screen, since the corresponding curvatures of the curved screens of different models are different, the lower the curvature value, the larger the curvature of the curved screen. Therefore, during the detection of the curved screens of different curvatures, it is difficult for the rotation point of the swing component to coincide with the arc center of the curved screen, which makes it difficult for the detection component to irradiate and capture images of the curved screen along the arc radius direction of the curved screen, increasing the detection difficulty. The technical solution can solve the above problems. The specific operation is as follows: first, the screen 3 to be detected is placed on the positioning seat 6, and the screen 3 to be detected is auxiliary supported by two first limiting wheels 8, and then the rotation drive mechanism is started, so that the positioning seat 6 rotates with the center of the first limiting wheel 8 as the rotation point until the second limiting wheel 9 contacts the bottom of the screen 3 to be detected, and the rotation drive mechanism is closed; During the rotation of the positioning seat 6, the limit rod 10 rotates synchronously, so that the intersection position of the two limit rods 10 is offset upward, thereby causing the connecting rod 13 to move upward until the second limit wheel 9 contacts the bottom of the screen 3 to be detected. After the rotation drive mechanism is closed, the position of the connecting rod 13 is the center position of the screen 3 to be detected, which is beneficial for the detection mechanism to coincide with the center of the screen 3 to be detected, so that the detection mechanism can irradiate and capture images of the curved screen along the arc radius direction of the curved screen with different curvatures, without manually adjusting the rotation point of the detection mechanism, reducing the detection difficulty and helping to improve the detection accuracy.

[0022] It should be noted that the limiting rod 10 and the positioning seat 6 are perpendicular to each other, so as to improve the accuracy of the coincidence between the connecting rod 13 and the center of the screen 3 to be detected.

[0023] As a further embodiment of the present invention, it also includes: A plurality of fourth sliders 34 and a plurality of second sliders 22 are symmetrically slidably connected to the inner side wall of the positioning seat 6, and both ends of the first limiting wheel 8 and the second limiting wheel 9 are rotatably connected to the fourth sliders 34 at corresponding positions; A first pressure sensor 35, which is disposed in the positioning seat 6 and is connected to a fourth slider 34 at the end of the first limiting wheel 8; A second pressure sensor 36, the second pressure sensor 36 is arranged in the positioning seat 6, and the first pressure sensor 35 is connected to the fourth slider 34 at the end of the second limiting wheel 9; Specifically, by setting the first pressure sensor 35 and the second pressure sensor 36, after the screen 3 to be detected is placed on the positioning seat 6, the first limiting wheel 8 generates pressure under the action of gravity, so that the pressure value obtained by the first pressure sensor 35 increases, so that it can be judged whether the first limiting wheel 8 is in full contact with the screen 3 to be detected. After the first limiting wheel 8 is in full contact with the bottom of the screen 3 to be detected, the rotation drive mechanism is started to turn the positioning seat 6 over, so that the second limiting wheel 9 moves toward the screen 3 to be detected, and finally contacts the screen 3 to be detected. Under the action of gravity of the screen 3 to be detected, the second pressure sensor 36 The acquired pressure value increases, and then the rotary drive mechanism is closed, thereby determining the position of the limit rod 10, so that the intersection position of the two limit rods 10 is determined, and then the center of the screen 3 to be detected is determined. That is to say, by setting the first pressure sensor 35 and the second pressure sensor 36, it is beneficial to make the first limit wheel 8 and the second limit wheel 9 fully contact with the screen 3 to be detected, realize the precise adjustment of the limit rod 10, and improve the accuracy of the coincidence of the connecting rod 13 and the center of the screen 3 to be detected, so as to facilitate the detection mechanism to irradiate and capture images of the curved screen along the arc radius direction of the curved screen, thereby improving the detection accuracy.

[0024] As a further embodiment of the present invention, the rotary drive mechanism comprises: A rotating shaft 7, one end of which is fixedly connected to the side wall of the positioning seat 6 corresponding to the center position of the first limiting wheel 8, and the other end of which is rotatably connected to the side wall of the supporting plate 4; The second motor 37 is fixedly connected to the side wall of the support plate 4. The output shaft surface of the second motor 37 and the surface of the rotating shaft 7 are driven by a belt 38, so that the rotating shaft 7 is driven to rotate, thereby driving the positioning seat 6 to rotate; Specifically, by setting the rotating shaft 7 and the second motor 37, and starting the second motor 37, the output shaft of the second motor 37 rotates. Under the transmission of the belt 38, the rotating shaft 7 drives the positioning seat 6 to rotate with the center of the first limiting wheel 8 as the rotation point, so as to make the second limiting wheel 9 contact with the screen 3 to be detected.

[0025] As a further embodiment of the present invention, it also includes: A first shell 14, the first shell 14 passes through the limiting rod 10 and is slidably connected to the limiting rod 10, a first spring 15 is fixedly connected inside the first shell 14, an end of the first spring 15 is fixedly connected to a first push rod 16, an end of the first push rod 16 is fixedly connected to a limiting plate 17, and the limiting plate 17 is located on the side of the screen 3 to be detected; The arc-shaped driving plate 18 is fixedly connected to the side wall of the support plate 4, and an arc-shaped driving inclined groove 19 is provided on the surface of the arc-shaped driving plate 18. A connecting pin is fixedly connected to the side wall of the first housing 14, and the connecting pin is slidably connected in the arc-shaped driving inclined groove 19; Specifically, by setting the first shell 14 and the first push rod 16, during the rotation of the positioning seat 6, the first shell 14 slides along the arc-shaped driving inclined groove 19, and under the drive of the arc-shaped driving inclined groove 19, the first shell 14 drives the first push rod 16 to approach the direction of the screen to be detected 3, so that the limit plate 17 clamps and positions the side of the screen to be detected 3. On the one hand, it is beneficial to push the screen to be detected 3 to the middle position, and on the other hand, it improves the stability of the screen to be detected 3 during the detection process.

[0026] As a further embodiment of the present invention, the detection mechanism comprises: A T-shaped mounting frame 20, wherein a second slide groove 21 is provided on a vertical side wall of the T-shaped mounting frame 20, a second slider 22 is slidably connected in the second slide groove 21, and the second slider 22 is fixedly connected to the connecting rod 13; An image acquisition component, which is arranged at the bottom of the transverse section of the T-shaped mounting frame 20 and is used to acquire image data of the surface of the screen 3 to be detected; A third slide groove 23, which is provided on the side wall of the support plate 4, in which a third slider 24 is slidably connected, and the third slider 24 is rotatably connected to the connecting rod 13; A first motor 25, the first motor 25 is fixedly connected to a mounting seat, the mounting seat is slidably connected to the outer wall of the support plate 4, and the output shaft of the first motor 25 is fixedly connected to the end of the connecting rod 13; The cylinder 26 is fixedly connected to the top of the second slider 22, and the top of the telescopic rod of the cylinder 26 is fixedly connected to the T-shaped mounting frame 20; Specifically, by setting the cylinder 26 and the image collector, before the screen 3 to be detected is placed on the positioning seat 6, the cylinder 26 is first used to push and adjust the T-shaped mounting frame 20, so that the T-shaped mounting frame 20 moves upward and away from the positioning seat 6, thereby avoiding interference between the T-shaped mounting frame 20 and the screen 3 to be detected during the adjustment of the limit rod 10. After the limit rod 10 adjusts the connecting rod 13 to move to the center position of the screen 3 to be detected, the telescopic rod of the cylinder 26 pulls the T-shaped mounting frame 20, so that the T-shaped mounting frame 20 moves downward, so that the image acquisition component approaches the screen 3 to be detected, so as to detect the screen 3 to be detected, and then the first motor 25 is started to rotate the output shaft of the first motor 25, thereby rotating the connecting rod 13, and then driving the T-shaped mounting frame 20 to rotate, so that the image acquisition component irradiates and acquires images of the curved screen along the radius direction of the curved surface of the curved screen, thereby improving the detection accuracy.

[0027] In the specific implementation process, a distance sensor can also be set at the bottom of the second slider 22. The distance sensor detects the distance between the second slider 22 and the bottom of the second slide groove 21, so as to determine the position of the connecting rod 13, so that the cylinder 26 can push and adjust the T-shaped mounting frame 20 to move downward according to the distance between the second slider 22 and the bottom of the second slide groove 21, so that the bottom of the T-shaped mounting frame 20 maintains the same distance from the screen 3 to be detected with different curvatures.

[0028] As a further embodiment of the present invention, the image acquisition component comprises: A fixing block 27, the fixing block 27 is fixedly connected to the bottom of the transverse section of the T-shaped mounting frame 20; Two second shells 28, the two second shells 28 are symmetrically fixedly connected to the outer side wall of the fixing block 27; A second push rod 29, which is slidably connected in the housing, an end of which is fixedly connected to a mounting block 30, and an industrial camera 31 and an illumination lamp 32 are disposed at the bottom of the mounting block 30; A ventilation hose 33, one end of the ventilation hose 33 is fixedly connected to the first shell 14, and the other end of the ventilation hose 33 is fixedly connected to the second shell 28; In the process of positioning the side wall of the detection screen 3 by the positioning plate, the first shell 14 is compressed by the first push rod 16 to generate high-pressure gas, which is transported to the second shell 28 through the ventilation hose 33, thereby adjusting the second push rod 29, so that the second push rod 29 pushes the mounting block 30 to adjust the industrial camera 31 to the specified position; Specifically, an industrial camera 31 and an irradiation lamp 32 are provided to illuminate and capture images of the curved screen, and a second shell 28 and a second push rod 29 are provided. During the process of the first shell 14 and the first push rod 16 pushing and adjusting the screen 3 to be detected, the first push rod 16 is squeezed by the screen 3 to be detected, moves along the first shell 14, and compresses the air in the first shell 14, so that high pressure is generated in the first shell 14. Then, the air in the first shell 14 is transported to the second shell 28 through the ventilation hose 33, thereby pushing and adjusting the two industrial cameras 31 away from each other, so that the industrial cameras 31 move toward the side of the screen 3 to be detected. The larger the width of the screen 3 to be detected, the greater the distance the first push rod 16 moves, the greater the pressure in the first shell 14, and the greater the distance the two industrial cameras 31 move. Therefore, the two industrial cameras 31 can be adapted and adjusted according to the size of the screen 3 to be detected, so as to detect the screen 3 to be detected as a whole, thereby reducing the detection blind spots.

[0029] As a further embodiment of the present invention, it also includes: A guide rail 39, the guide rail 39 is fixedly connected to the top of the base 1, and a driving block is slidably connected to the top of the guide rail 39; The transport seat 40, the bottom of the transport seat 40 is fixedly connected to the top of the driving block, the two sides of the transport seat 40 are symmetrically connected to the flip support arms 41, the end of the flip support away from the transport seat 40 is fixedly connected to the elastic pad 42, and the screen 3 to be tested is placed on the two flip support arms 41; A hydraulic cylinder 43, the bottom end of the hydraulic cylinder 43 is rotatably connected to the transport seat 40, and the top end of the telescopic rod of the hydraulic cylinder 43 is rotatably connected to the flip support arm 41 at the corresponding position; Specifically, the screen 3 to be inspected is transported by setting a guide rail 39 and a transport seat 40, wherein the transport seat 40 can be moved and transported by means of a screw rod. After the transport seat 40 transports the screen 3 to be inspected to the positions of the two positioning seats 6, the hydraulic cylinder 43 is started to move the telescopic rod of the hydraulic cylinder 43 downward, thereby causing the flip support arm 41 to flip downward, and the screen 3 to be inspected moves downward under the force of gravity, contacts with the first limiting wheel 8, and generates pressure on the first limiting wheel 8. After the inspection is completed, the inspection screen is moved away from the positioning seat 6 by the transport seat 40, so as to facilitate the unloading of the screen 3 to be inspected.

[0030] Reference Figure 1 , Fig.11 and Fig.12 In addition, to solve the above problems, the present invention also proposes a method for detecting a liquid crystal display module, which further includes: Controller 2, which is arranged on the support plate 4 and is used for opening and closing the rotary drive mechanism; The detection method of the liquid crystal display module includes: The controller 2 receives the first request information sent by the first pressure sensor 35, where the first request information is generated when the pressure value acquired by the first pressure sensor 35 increases; The controller 2 generates first control information based on the first request information, and the first control information is used to start the rotation drive mechanism; The controller 2 sends the first control information to the rotation drive mechanism to start the rotation drive mechanism and drive the positioning seat 6 to rotate so that the second limiting wheel 9 contacts the bottom of the screen to be detected 3; The controller 2 receives the second request information sent by the second pressure sensor 36, and the second request information is generated when the pressure value acquired by the second pressure sensor 36 increases; The controller 2 generates second control information based on the second request information, and the second control information is used to turn off the rotation drive mechanism; The controller 2 sends the second control information to the rotary drive mechanism, so that the rotary drive mechanism is closed, the positioning seat 6 stops rotating, and the first limiting wheel 8 and the second limiting wheel 9 are fully in contact with the bottom of the screen to be detected 3, so that the connecting rod 13 is positioned at the center of the screen to be detected 3; Specifically, the controller 2 receives the first request information sent by the first pressure sensor 35, and then the controller 2 generates the first control information based on the first request information, and then the controller 2 sends the first control information to the rotation drive mechanism to start the rotation drive mechanism and drive the positioning seat 6 to rotate, so that the second limiting wheel 9 contacts the bottom of the screen 3 to be detected; The controller 2 receives the second request information sent by the second pressure sensor 36, and then the controller 2 generates the second control information based on the second request information, the second control information is used to turn off the rotation drive mechanism, and then the controller 2 sends the second control information to the rotation drive mechanism, so that the rotation drive mechanism is turned off, the positioning seat 6 stops rotating, and the first limit wheel 8 and the second limit wheel 9 are fully in contact with the bottom of the screen to be detected 3, so that the connecting rod 13 is positioned at the center of the screen to be detected 3, and then the first motor 25 drives the connecting stem to rotate, so that the T-shaped mounting frame 20 rotates, and the image acquisition component irradiates and acquires images of the curved screen along the arc radius direction of the curved screen, thereby improving the detection accuracy.

[0031] Specifically, the specific method of using the first pressure sensor 35 includes: The first pressure sensor 35 obtains the pressure value given by the first limiting wheel 8. When the pressure value increases to a specified value, the first pressure sensor 35 generates a first request information; The first pressure sensor 35 sends the first request information to the controller 2 to request the controller 2 to control the rotation drive mechanism to start; Among them, after the screen 3 to be tested is placed on the positioning seat 6, under the action of gravity, the first limiting wheel 8 generates pressure, thereby increasing the pressure value obtained by the first pressure sensor 35. The first pressure sensor 35 generates first request information and sends the first request information to the controller 2.

[0032] Specifically, the specific method of using the second pressure sensor 36 includes: The second pressure sensor 36 obtains the pressure value given by the second limiting wheel 9. When the pressure value increases to a specified value, the second pressure sensor 36 generates a second request information; The second pressure sensor 36 sends the second request information to the controller 2 to request the controller 2 to control the rotation drive mechanism to close; Among them, the rotating drive mechanism causes the positioning seat 6 to flip, so that the second limiting wheel 9 moves toward the screen 3 to be detected and finally contacts the screen 3 to be detected. The pressure value obtained by the second pressure sensor 36 increases. The second pressure sensor 36 generates the first request information and sends the second request information to the controller 2.

[0033] The working principle of the present invention is as follows: firstly, the screen 3 to be detected is placed on the positioning seat 6, and the screen 3 to be detected is supported by two first limiting wheels 8, and then the rotation drive mechanism is started, so that the positioning seat 6 rotates around the center of the first limiting wheel 8 until the second limiting wheel 9 contacts the bottom of the screen 3 to be detected, and then the rotation drive mechanism is closed; During the rotation of the positioning seat 6, the limit rod 10 rotates synchronously, so that the intersection of the two limit rods 10 moves upward, thereby causing the connecting rod 13 to move upward until the second limit wheel 9 contacts the bottom of the screen 3 to be detected. After the rotation drive mechanism is closed, the position of the connecting rod 13 is the center position of the screen 3 to be detected, which is conducive to the overlap of the detection mechanism with the center of the screen 3 to be detected, so that the detection mechanism can irradiate and capture images of the curved screen along the arc radius direction of the curved screen with different curvatures, without manually adjusting the rotation point of the detection mechanism, reducing the detection difficulty and helping to improve the detection accuracy.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A detection device for a liquid crystal display module, characterized in that: include: A base (1), wherein a support plate (4) is symmetrically fixedly connected to the top of the right side of the base (1), and an arc-shaped connecting plate (5) is fixedly connected to the top of the support plate (4); Two positioning seats (6), the two positioning seats (6) are symmetrically distributed on both sides of the bottom of the screen (3) to be detected, a first limiting wheel (8) and a second limiting wheel (9) are symmetrically arranged at both ends of the top of the positioning seat (6), and the side wall of the positioning seat (6) is rotatably connected to the side wall of the support plate (4) with the center of the first limiting wheel (8) as the axis point; Two limit rods (10), the bottom ends of the two limit rods (10) are respectively fixedly connected to the side walls of the two positioning seats (6), the top ends of the two limit rods (10) are symmetrically slidably connected to the bottom of the arc-shaped connecting plate (5), the two limit rods (10) are intersected with each other, and the side walls of the two limit rods (10) are both provided with a first sliding groove (11); Two first sliding blocks (12), the two first sliding blocks (12) being slidably connected in the two first sliding grooves (11) respectively, and the first sliding blocks (12) being located at the intersection of the two limiting rods (10); A connecting rod (13), wherein both ends of the connecting rod (13) are rotatably connected to the two first sliding blocks (12) respectively; A detection mechanism, the detection mechanism being arranged on a connecting rod (13), the detection mechanism rotating with the connecting rod (13) as the center of a circle to perform flaw detection on the surface of the screen (3) to be detected; A rotation drive mechanism, the rotation drive mechanism is used to drive the positioning seat (6) to rotate so that the second limiting wheel (9) contacts the bottom of the screen to be detected (3), and after the second limiting wheel (9) contacts the bottom of the screen to be detected (3), the intersection position of the two limiting rods (10) is the center position of the screen to be detected (3).

2. A detection device for a liquid crystal display module according to claim 1, characterized in that: Also includes: A first shell (14), the first shell (14) passes through the limiting rod (10) and is slidably connected to the limiting rod (10), a first spring (15) is fixedly connected inside the first shell (14), an end of the first spring (15) is fixedly connected to a first push rod (16), an end of the first push rod (16) is fixedly connected to a limiting plate (17), and the limiting plate (17) is located on the side of the screen (3) to be detected; An arc-shaped driving plate (18), the arc-shaped driving plate (18) being fixedly connected to the side wall of the support plate (4), the surface of the arc-shaped driving plate (18) being provided with an arc-shaped driving inclined groove (19), the side wall of the first shell (14) being fixedly connected with a connecting pin, the connecting pin being slidably connected in the arc-shaped driving inclined groove (19).

3. A detection device for a liquid crystal display module according to claim 2, characterized in that: The detection mechanism includes: A T-shaped mounting frame (20), wherein a second slide groove (21) is provided on a side wall of a vertical section of the T-shaped mounting frame (20), a second sliding block (22) is slidably connected in the second sliding groove (21), and the second sliding block (22) is fixedly connected to the connecting rod (13); An image acquisition component, the image acquisition component being arranged at the bottom of the transverse section of the T-shaped mounting frame (20) and being used to acquire image data of the surface of the screen (3) to be detected; a third slide groove (23), the third slide groove (23) being provided on a side wall of the support plate (4), a third slider (24) being slidably connected in the third slide groove (23), and the third slider (24) being rotatably connected to the connecting rod (13); a first motor (25), the first motor (25) being fixedly connected to a mounting seat, the mounting seat being slidably connected to an outer side wall of the support plate (4), and the output shaft of the first motor (25) being fixedly connected to an end of a connecting rod (13); A cylinder (26), wherein the cylinder (26) is fixedly connected to the top of the second sliding block (22), and the top end of the telescopic rod of the cylinder (26) is fixedly connected to the T-shaped mounting frame (20).

4. A detection device for a liquid crystal display module according to claim 3, characterized in that: The image acquisition component comprises: A fixing block (27), the fixing block (27) being fixedly connected to the bottom of the transverse section of the T-shaped mounting frame (20); Two second shells (28), the two second shells (28) being symmetrically fixedly connected to the outer side wall of the fixing block (27); a second push rod (29), the second push rod (29) being slidably connected in the housing, the end of the second push rod (29) being fixedly connected to a mounting block (30), the bottom of the mounting block (30) being provided with an industrial camera (31) and an illumination lamp (32); A ventilation hose (33), one end of the ventilation hose (33) being fixedly connected to the first shell (14), and the other end of the ventilation hose (33) being fixedly connected to the second shell (28); During the process of positioning the side wall of the detection screen (3) by the positioning plate, the first shell (14) is compressed by the first push rod (16) to generate high-pressure gas, which is transported to the second shell (28) through the ventilation hose (33), thereby adjusting the second push rod (29) so that the second push rod (29) pushes the mounting block (30) to adjust the industrial camera (31) to a specified position.

5. The detection device of a liquid crystal display module according to claim 1, characterized in that: Also includes: A plurality of fourth sliders (34) and a plurality of second sliders (22) are symmetrically slidably connected to the inner side wall of the positioning seat (6), and both ends of the first limiting wheel (8) and the second limiting wheel (9) are rotatably connected to the fourth sliders (34) at corresponding positions; A first pressure sensor (35), the first pressure sensor (35) being arranged in the positioning seat (6), the first pressure sensor (35) being connected to a fourth slider (34) at the end of the first limiting wheel (8); A second pressure sensor (36), the second pressure sensor (36) is arranged in the positioning seat (6), and the first pressure sensor (35) is connected to a fourth slider (34) at the end of the second limiting wheel (9).

6. The detection device of a liquid crystal display module according to claim 1, characterized in that: The rotary drive mechanism comprises: A rotating shaft (7), one end of the rotating shaft (7) being fixedly connected to the side wall of the positioning seat (6) at a position corresponding to the center of the first limiting wheel (8), and the other end of the rotating shaft (7) being rotatably connected to the side wall of the support plate (4); A second motor (37), the second motor (37) is fixedly connected to the side wall of the support plate (4), and the output shaft surface of the second motor (37) and the surface of the rotating shaft (7) are driven by a belt (38), so that the rotating shaft (7) is driven to rotate, thereby driving the positioning seat (6) to rotate.

7. The detection device of a liquid crystal display module according to claim 1, characterized in that: Also includes: A guide rail (39), the guide rail (39) being fixedly connected to the top of the base (1), and the top of the guide rail (39) being slidably connected to a driving block; A transport seat (40), wherein the bottom of the transport seat (40) is fixedly connected to the top of the driving block, and the two sides of the transport seat (40) are symmetrically rotatably connected to flip support arms (41), and the ends of the flip support away from the transport seat (40) are fixedly connected to elastic pads (42), and the screen to be detected (3) is placed on the two flip support arms (41); A hydraulic cylinder (43), wherein the bottom end of the hydraulic cylinder (43) is rotatably connected to the transport seat (40), and the top end of the telescopic rod of the hydraulic cylinder (43) is rotatably connected to the flip support arm (41) at a corresponding position.

8. A method for detecting a liquid crystal display module, applicable to the detection device for a liquid crystal display module according to claim 5, characterized in that: Also includes: A controller (2), the controller (2) being arranged on the support plate (4), the controller (2) being used to open and close the rotary drive mechanism; The detection method of the liquid crystal display module includes: The controller (2) receives first request information sent by the first pressure sensor (35), wherein the first request information is generated when the pressure value acquired by the first pressure sensor (35) increases; The controller (2) generates first control information based on the first request information, wherein the first control information is used to start the rotation drive mechanism; The controller (2) sends the first control information to the rotary drive mechanism so that the rotary drive mechanism starts and drives the positioning seat (6) to rotate so that the second limiting wheel (9) contacts the bottom of the screen to be detected (3); The controller (2) receives second request information sent by the second pressure sensor (36), wherein the second request information is generated when the pressure value acquired by the second pressure sensor (36) increases; The controller (2) generates second control information based on the second request information, wherein the second control information is used to shut down the rotation drive mechanism; The controller (2) sends the second control information to the rotary drive mechanism, so that the rotary drive mechanism is turned off, the positioning seat (6) stops rotating, and the first limiting wheel (8) and the second limiting wheel (9) are in full contact with the bottom of the screen to be detected (3), so that the connecting rod (13) is positioned at the center of the screen to be detected (3).

9. A method for detecting a liquid crystal display module according to claim 8, characterized in that: The specific method of using the first pressure sensor (35) includes: The first pressure sensor (35) obtains the pressure value given by the first limiting wheel (8), and when the pressure value increases to a specified value, the first pressure sensor (35) generates first request information; The first pressure sensor (35) sends first request information to the controller (2) to request the controller (2) to control the rotation drive mechanism to start.

10. The method for detecting a liquid crystal display module according to claim 8, characterized in that: The specific method of using the second pressure sensor (36) includes: The second pressure sensor (36) obtains the pressure value given by the second limiting wheel (9), and when the pressure value increases to a specified value, the second pressure sensor (36) generates second request information; The second pressure sensor (36) sends second request information to the controller (2) to request the controller (2) to control the rotary drive mechanism to close.

Images