LCM display screen detection device

Abstract

The utility model relates to the technical field of display screen testing, in particular to an LCM (Liquid Crystal Module) display screen detection device which comprises a rack, a mounting rack, a visual detector, a base and a motor I. The mounting rack is arranged in the middle of the rear side of the top of the rack, the upper part of the mounting rack is bent forwards, and the visual detector is arranged at the front end of the bent part; and an observation screen is installed at the position, above the visual detector, of the front end of the zigzag part, the observation screen is electrically connected with the visual detector, a base is fixed to the front side of the top of the rack, and a first motor is installed on the upper side of the base. The spherical grooved wheel is matched with the driving lever to realize 90-degree rotation of the turntable, the bearing frame is accurately moved to a detection position, and accurate detection of each display screen is ensured; the second motor drives the stabilizing plate to rotate to detect the back face of the display screen, specific patterns are displayed through the observation screen, and comprehensive evaluation is ensured. The wedge-shaped clamping plate, the second spring and the clamping strip are used for fixing the display screen, and misjudgment caused by movement or vibration is prevented.

Description

Technical Field

[0001] This utility model relates to the field of display screen testing technology, and in particular to an LCM display screen testing device. Background Technology

[0002] An LCM (Liquid Crystal Display) is a display device that integrates a liquid crystal panel and related driving circuitry. It includes not only the liquid crystal panel for displaying images, but also driving ICs that control the displayed content, a backlight system, and other auxiliary components such as touch sensors. Because the LCM integrates driving circuitry and other related components, its quality directly affects the display effect and user experience of the final product. Therefore, rigorous quality testing of LCM displays during production and assembly is crucial.

[0003] Traditionally, the inspection of LCM displays has relied on manual visual inspection or simple automated equipment, which suffers from inefficiency and insufficient accuracy. For example, manual visual inspection is easily affected by operator fatigue, leading to missed or misjudged defects; while traditional automated inspection equipment often can only detect specific types of defects, making it difficult to detect some small or hidden defects.

[0004] To address this, a special LCM display screen testing device was designed. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the present invention provides an LCM display screen detection device.

[0006] The technical solution of this utility model is: an LCM display screen inspection device, including a frame, a mounting frame, a vision inspection instrument, a base, a motor, a lever, a spherical grooved wheel, a turntable, an electric slide rail, a slider, and a reinforcement assembly. The mounting frame is centrally located at the rear top of the frame. The upper part of the mounting frame bends forward, and the vision inspection instrument is mounted at the front end of this bend. An observation screen is mounted above the vision inspection instrument at the front end of this bend, and the observation screen is electrically connected to the vision inspection instrument. A base is fixed to the front top of the frame. A motor is mounted on the upper side of the base. The output shaft of the motor passes through the side of the base. A lever is mounted on the output shaft of the motor. The upper part of the lever is a protruding semi-circular ring, and the lower part is a slanted rod. A spherical grooved wheel is rotatably mounted inside the top of the base. Four grooves are formed on the spherical grooved wheel. The base has a circumferentially distributed semi-circular groove and straight groove. The semi-circular ring of the lever rotates and engages with the semi-circular groove on the spherical groove wheel. The inclined part of the lever rotates and slides with the straight groove on the spherical groove wheel. A turntable is rotatably mounted on the top of the base. The rotating shaft in the middle of the turntable is connected to the central shaft of the spherical groove wheel. The turntable is equipped with a support frame on all four sides. Each support frame has two opposing electric slide rails installed on both sides. A slider is slidably mounted on the electric slide rail. A motor is mounted on the opposing surface of each slider. Opposing stabilizing plates are installed on the output shafts of the two motors on both sides. A spring is symmetrically arranged on the opposing surface of each stabilizing plate. A guide rod is slidably mounted inside the stabilizing plate corresponding to one of the springs. A wedge-shaped clamp is arranged between the guide rods on the same side. The upper part of the wedge-shaped clamp is inclined, and a reinforcement group is provided at the lower part of the wedge-shaped clamp.

[0007] Furthermore, the inspection end of the visual inspection instrument is located near the upper end of the support frame.

[0008] Furthermore, the reinforcement assembly includes two springs and retaining strips. Two springs are symmetrically arranged on both sides of the lower part of the wedge-shaped clamp, and retaining strips suitable for the upper and lower edges of the display screen are provided on both sides of the two symmetrical springs.

[0009] Furthermore, it also includes an electric slide rail 2 and a slider 2. The electric slide rail 2 is installed in the center of the inner bottom of the slider 2 support frame. The slider 2 is slidably mounted on the electric slide rail 2 for pushing defective products. The sliders 2 in each position are respectively embedded in the inner side of the turntable.

[0010] Furthermore, it also includes a defective product frame and a cushioning liner. The defective product frame is fixed to the front of the mounting bracket, and a cushioning liner is provided at the bottom of the defective product frame. The defective product frame is directly below the vision inspection instrument.

[0011] Furthermore, it also includes a third motor, a rotating shaft, a rocker arm, a third electric slide rail, and a pneumatic suction cup. The third motor with its output shaft facing upward is installed on both sides of the base. A rotating shaft is installed on the output shaft of the third motor, and a rocker arm is installed at the upper end of the rotating shaft. The two rocker arms are set in opposite directions. The third electric slide rail is installed on the outward end of the rocker arm. A pneumatic suction cup is slidably installed on the third electric slide rail. After the left rocker arm rotates 90 degrees clockwise, the lower end of the pneumatic suction cup will be directly above the center of the support frame on the side of the turntable. Conversely, after the right rocker arm rotates 90 degrees counterclockwise, the lower end of the pneumatic suction cup will be directly above the center of the support frame on the other side of the turntable.

[0012] Furthermore, it also includes a material box, which is located on one side of the frame and directly below the rocker arm on the left.

[0013] Furthermore, it also includes a conveyor, which is installed on the other side of the frame, with the synchronous belt of the conveyor facing directly below the rocker arm on the right.

[0014] The beneficial effects are: 1. The spherical grooved wheel and the lever work together to achieve a 90-degree rotation of the turntable, accurately moving the support frame to the detection position and ensuring accurate detection of each display screen; the second motor drives the stabilizing plate to rotate to detect the back of the display screen, and a specific pattern is displayed on the observation screen to ensure a comprehensive evaluation; the wedge-shaped clamp, the second spring and the locking strip fix the display screen to prevent misjudgment caused by movement or vibration.

[0015] 2. The pneumatic suction cup is controlled by electric slide rail three and motor three, which can accurately and quickly pick up the display screen from the material box and place it into the support frame on the turntable; after the inspection is completed, the pneumatic suction cup on the right side will also efficiently transfer qualified products to the conveyor, while defective products will be automatically pushed into the defective product box. The whole process does not require manual intervention, which greatly improves the inspection efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a structural schematic diagram of the base, motor, and lever components of this utility model.

[0018] Figure 3 This is a structural schematic diagram of the turntable, electric slide rail, and slider components of this utility model.

[0019] Figure 4 This is a structural schematic diagram of the components of this utility model, including the motor, the stabilizing plate, and the spring.

[0020] Figure 5 This is a structural diagram of the wedge-shaped clamp, spring 2, and locking strip of this utility model.

[0021] Figure 6This is a structural diagram of the slider, electric slide rail, and defective product frame of this utility model.

[0022] The components in the attached diagram are labeled as follows: 1. Frame, 2. Mounting bracket, 3. Vision inspection instrument, 31. Observation screen, 4. Base, 5. Motor 1, 6. Lever, 7. Spherical grooved wheel, 8. Turntable, 81. Support frame, 9. Electric slide rail 1, 10. Slider 1, 11. Motor 2, 12. Stabilizing plate, 13. Spring 1, 131. Guide rod, 14. Wedge clamp, 15. Spring 2, 16. Clamping strip, 17. Electric slide rail 2, 18. Slider 2, 19. Defective product frame, 191. Buffer liner, 20. Motor 3, 21. Rotating shaft, 22. Rocker arm, 221. Electric slide rail 3, 23. Pneumatic suction cup, 24. Material frame, 25. Conveyor. Detailed Implementation

[0023] References to embodiments herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] Example: An LCM display screen testing device, such as Figures 1-6As shown, the system includes a frame 1, a mounting bracket 2, a vision inspection device 3, a base 4, a motor 5, a lever 6, a spherical grooved wheel 7, a turntable 8, an electric slide rail 9, a slider 10, and a reinforcement assembly. The frame 1 serves as the basic support structure for the entire equipment, ensuring the stability and reliability of all components. The mounting bracket 2 is located at the center of the rear top of the frame 1. The upper part of the mounting bracket 2 bends forward, and the vision inspection device 3 is mounted at the front end of this bend. The vision inspection device 3 performs detailed image analysis to inspect the quality of the LCM display screen. The front end of the bend is positioned above the vision inspection device 3. Equipped with an observation screen 31, which is electrically connected to the vision inspection instrument 3, the observation screen 31 displays the inspection results of the vision inspection instrument 3 in real time, helping the operator to intuitively view the inspection data and assisting in judging the quality of the display screen. A base 4 is fixed to the top front side of the frame 1. A motor 5 is installed on the upper side of the base 4. The output shaft of the motor 5 passes through the side of the base 4. A lever 6 is set on the output shaft of the motor 5. The upper part of the lever 6 is a protruding semi-circular ring, and the lower part is a slanted bar. A spherical grooved wheel 7 is rotatably installed inside the top of the base 4. The spherical grooved wheel 7 has four circumferentially evenly spaced grooves. The base 4 has a base with a base 4. A turntable 8 is rotatably mounted on the top of the base 4. The rotating shaft 21 in the middle of the turntable 8 is connected to the central shaft of the spherical grooved wheel 7. The turntable 8 has a support frame 81 on all four sides. The detection end of the vision inspection instrument 3 is close to the upper end of the support frame 81. Opposite electric slide rails 9 are installed on both sides of each support frame 81. Slider 10s are slidably mounted on the electric slide rails 9. Each slider 10 has a mounting plate on its opposite surface. The device is equipped with a second motor 11. On the output shafts of the second motors 11 on both sides, there are opposing stabilizing plates 12. On the opposing surfaces of each stabilizing plate 12, there are symmetrical springs 13. Inside the stabilizing plate 12, there are guide rods 131 that slide along the springs 13. The guide rods 131 cooperate with the springs 13 inside the stabilizing plate 12 and slide within the stabilizing plate 12. There are wedge-shaped clamping plates 14 between the guide rods 131 on the same side. The upper part of the wedge-shaped clamping plates 14 is inclined. The wedge-shaped clamping plates 14 guide the display screen to slide into the bottom position through their inclined surfaces. The lower part of the wedge-shaped clamping plates 14 is equipped with a reinforcement group.

[0025] like Figure 4 and Figure 5 As shown, the reinforcement assembly includes a second spring 15 and a retaining strip 16. The reinforcement assembly is used to further fix the upper and lower edges of the display screen to prevent it from loosening during the testing process. The lower two sides of the wedge-shaped clamp 14 are symmetrically provided with the second spring 15, and the two symmetrical springs 15 are respectively provided with retaining strips 16 suitable for the upper and lower edges of the display screen.

[0026] like Figure 1As shown, it also includes an electric slide rail 217 and a slider 218. The electric slide rail 217 is installed at the center of the inner bottom of the slider 218 support frame 81. The slider 218 for pushing defective products is slidably arranged on the electric slide rail 217. The slider 218 cooperates with the electric slide rail 217 to achieve linear movement. The sliders 218 in each position are respectively embedded in the inner side of the turntable 8. The sliders 218 push the defective products out of the support frame 81 and into the defective product frame 19.

[0027] like Figure 1 As shown, it also includes a defective product frame 19 and a buffer liner 191. The defective product frame 19 is fixed to the front side of the mounting bracket 2 for collecting the display screens that fail the inspection. The bottom of the defective product frame 19 is provided with a buffer liner 191 to reduce the impact force when the defective product falls, protect the defective product from additional damage, and facilitate subsequent processing. The defective product frame 19 is directly below the visual inspection instrument 3.

[0028] like Figure 1 As shown, it also includes a motor 20, a rotating shaft 21, a rocker arm 22, an electric slide rail 221, and a pneumatic suction cup 23. Motors 20 with their output shafts facing upwards are installed on both sides of the base 4. A rotating shaft 21 is mounted on the output shaft of each motor 20 to transmit rotational power. A rocker arm 22 is mounted on the upper end of the rotating shaft 21. The rocker arms 22 on both sides are positioned in opposite directions. An electric slide rail 221 is mounted on the outward-facing end of each rocker arm 22. A pneumatic suction cup 23 slides on the electric slide rail 221. When the left rocker arm 22 rotates 90 degrees clockwise, the lower end of the pneumatic suction cup 23 will be directly above the center of the support frame 81 on the side of the turntable 8. Conversely, the right rocker arm 23 will be positioned counterclockwise. After the rocker arm 22 rotates 90 degrees, the lower end of the pneumatic suction cup 23 will be directly above the center of the support frame 81 on the other side of the turntable 8. The pneumatic suction cup 23 is used to grab and transfer the display screen, ensuring its accurate movement between the material frame 24, the support frame 81, and the conveyor 25. The electric slide rail 221 drives the pneumatic suction cup 23 to slide along the track and adjust its height to ensure that the pneumatic suction cup 23 can smoothly approach and leave the display screen, ensuring the accuracy of grabbing and releasing. The rocker arm 22 rotates through the rotating shaft 21, driving the pneumatic suction cup 23 to move, so that the pneumatic suction cup 23 can accurately switch positions between the material frame 24 and the conveyor 25.

[0029] like Figure 1 As shown, it also includes a material frame 24. The material frame 24 is provided on one side of the outer side of the frame 1. The material frame 24 is directly below the rocker arm 22 on the left side. The material frame 24 provides a loading area to ensure that the display screen can enter the testing process in an orderly manner.

[0030] like Figure 1 As shown, it also includes a conveyor 25. The conveyor 25 is installed on the other side of the frame 1. The synchronous belt of the conveyor 25 is directly below the rocker arm 22 on the right side. The conveyor 25 will transport the qualified display screen to the next process to ensure that qualified products can enter the subsequent production process quickly and safely.

[0031] First, before starting the inspection, the operator places the LCM display to be inspected in the material frame 24. After the display is placed in the support frame 81, it slides along the inclined surface of the wedge clamp 14 until it reaches the bottom position. During this process, the spring 15 pushes the retaining strips 16 to adapt to and fix the upper and lower edges of the display, thereby ensuring that the screen remains stable during the inspection. The motor 5 drives the lever 6 to rotate. The semicircular ring and the inclined rod of the lever 6 respectively engage with the semicircular groove and the straight groove on the spherical groove wheel 7, causing the spherical groove wheel 7 to rotate, which in turn drives the turntable 8 to rotate gradually in 90-degree increments. Each rotation moves the next support frame 81 containing the LCM display to the underside of the vision inspection instrument 3 for inspection. When the support frame 81 moves to the underside of the vision inspection instrument 3, the electric slide rail 9 activates the slider 10, moving the LCM display on the wedge clamp 14 closer to the vision inspection instrument. Below 3, at this time, the vision inspection instrument 3 begins to perform detailed image analysis on the LCM display screen. Since the vision inspection instrument 3 and the observation screen 31 above are electrically connected, the observation screen 31 can be controlled to display specific patterns in order to more comprehensively evaluate its performance. For qualified products, the turntable 8 continues to rotate, bringing the next display screen to be inspected into the inspection position. If it is a defective product, the slider 18 on the electric slide rail 17 will be activated, pushing the defective product out of the support frame 81 and into the defective product frame 19. The buffer liner 191 inside the defective product frame 19 helps to protect the defective product from additional damage. In order to inspect the back of the display screen, the motor 11 drives the stabilizing plate 12 to rotate, causing the fixed display screen to rotate together. The guide rod 131 and spring 13 inside the stabilizing plate 12 ensure the stability and safety of the display screen during the rotation process, so that the vision inspection instrument 3 can perform comprehensive inspection of the front and back of the display screen.

[0032] For LCM displays that pass inspection, the control system, upon receiving the pass signal from the vision inspection unit 3, immediately triggers the right-side motor 20. Motor 20 starts, rotating the rocker arm 22 90 degrees clockwise via the shaft 21, accurately aligning the pneumatic suction cup 23 with the inspected and passed display located at the center of the support frame 81. Driven by motor 20, the electric slide rail 221 precisely moves the pneumatic suction cup 23 along a predetermined path above the support frame 81. The vacuum system inside the pneumatic suction cup 23 is activated, generating sufficient suction... The pneumatic suction cup 23 grips the display screen stably. After the pneumatic suction cup 23 grips the display screen, the electric slide rail 221 and the motor 20 work together to lift the display screen vertically from the support frame 81 and move it smoothly along the pre-set path. When the pneumatic suction cup 23 carrying the qualified product arrives directly above the conveyor 25, the control system instructs the electric slide rail 221 and the motor 20 to adjust their positions so that the display screen can be accurately placed on the synchronous belt of the conveyor 25. After placement, the pneumatic suction cup 23 releases the vacuum, completing one qualified product transfer operation.

[0033] In addition, before the material is loaded, the pneumatic suction cup 23 on the left is in its starting position, that is, directly above the material frame 24. When it is necessary to assist in picking up the display screen, the motor 20 on the left first drives the rotating shaft 21 to rotate, so that the rocker arm 22 moves the pneumatic suction cup 23 toward the material frame 24. At the same time, the electric slide rail 221 adjusts the height of the pneumatic suction cup 23 as needed to ensure that it can smoothly approach the display screen to be inspected. Once the pneumatic suction cup 23 contacts the surface of the display screen, the internal vacuum system is activated, generating enough negative pressure in a short time to firmly grasp the display screen. After confirming that the adsorption is completed, the motor 20 and the electric slide rail 221 work together to lift the pneumatic suction cup 23 and the grasped display screen vertically away from the material frame 24.

[0034] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present application. Therefore, the content of this specification should not be construed as a limitation of the present application.

Claims

1. A kind of LCM display screen detection device, including organic frame (1) and mounting frame (2), frame (1) top rear side central place is provided with mounting frame (2), it is characterized in that, The visual detector (3), the base (4), the motor (5), the lever (6), the spherical groove wheel (7), the rotating disc (8), the motor sliding rail (9), the sliding block (10) and the reinforcing group are arranged on the upper part of the installation frame (2), the upper part of the installation frame (2) is bent forward, the visual detector (3) is arranged on the front end of the bent part, the observation screen (31) is arranged on the front end of the bent part and above the visual detector (3), the observation screen (31) is electrically connected with the visual detector (3), the base (4) is arranged on the top of the frame (1), the motor (5) is arranged on the upper part of the base (4), the output shaft of the motor (5) penetrates through the side of the base (4), the lever (6) is arranged on the output shaft of the motor (5), the upper part of the lever (6) is in the shape of a semicircle ring, the lower part of the lever (6) is in the shape of an inclined rod, the spherical groove wheel (7) is rotatably arranged on the inner top of the base (4), four semicircle grooves and a slot are arranged on the spherical groove wheel (7) and are uniformly distributed in the circumferential direction, the semicircle ring part of the lever (6) is rotatably connected with the semicircle groove of the spherical groove wheel (7), the inclined rod part of the lever (6) is rotatably and slidably connected with the slot of the spherical groove wheel (7), the rotating disc (8) is rotatably arranged on the top of the base (4), the rotating shaft (21) of the rotating disc (8) is connected with the central shaft of the spherical groove wheel (7), the supporting frame (81) is arranged on the outer part of the rotating disc (8), the motor sliding rail (9) is arranged on the inner side of each supporting frame (81), the sliding block (10) is slidably arranged on the motor sliding rail (9), the motor (11) is arranged on the opposite surface of each sliding block (10), the stabilizing plate (12) is arranged on the output shaft of each motor (11), the spring (13) is arranged on the opposite surface of each stabilizing plate (12), the guide rod (131) is slidably arranged in the stabilizing plate (12) and corresponds to the spring (13), the wedge-shaped clamping plate (14) is arranged between the guide rods (131) on the same side, the upper part of the wedge-shaped clamping plate (14) is inclined, the reinforcing group is arranged on the lower part of the wedge-shaped clamping plate (14).

2. The LCM display screen detection device according to claim 1, characterized in that, The detection end of the visual detector (3) is close to the upper end of the supporting frame (81).

3. The LCM display screen detection device according to claim 2, characterized in that, The reinforcing group comprises the spring (15) and the clamping strip (16), the spring (15) is arranged on the lower part of the wedge-shaped clamping plate (14) and is symmetrical, the clamping strip (16) is arranged on the spring (15) and is suitable for the upper edge and the lower edge of the display screen.

4. The LCM display screen detection device of claim 3, wherein, The motor sliding rail (17) and the sliding block (18) are arranged on the installation frame (2), the motor sliding rail (17) is arranged on the inner bottom of the supporting frame (81) and is centrally arranged, the sliding block (18) is slidably arranged on the motor sliding rail (17) and is used for pushing the defective products, the sliding block (18) is embedded in the inner side of the rotating disc (8).

5. The LCM display screen detection device of claim 4, wherein, The defective product frame (19) and the buffer lining (191) are arranged on the installation frame (2), the defective product frame (19) is fixed on the front side of the installation frame (2), the buffer lining (191) is arranged on the inner bottom of the defective product frame (19), the defective product frame (19) is opposite to the visual detector (3).

6. The LCM display screen detection device of claim 5, wherein, It also includes motor three (20), rotating shaft (21), rocker arm (22), electric slide rail three (221) and pneumatic suction cup (23), the base (4) rear two sides are provided with output shaft upward motor three (20), the output shaft of motor three (20) is provided with rotating shaft (21), the upper end of rotating shaft (21) is provided with rocker arm (22), the rocker arm (22) on both sides is set up reversely, the outer end of rocker arm (22) is provided with electric slide rail three (221), the pneumatic suction cup (23) is slidably arranged on electric slide rail three (221), the lower end of pneumatic suction cup (23) will be opposite above the center of frame (81) on the side of turntable (8) after the left rocker arm (22) is turned 90 degrees, on the contrary, the lower end of pneumatic suction cup (23) will be opposite above the center of frame (81) on the other side of turntable (8) after the right rocker arm (22) is reversed 90 degrees.

7. The LCM display screen detection device of claim 6, wherein, It also includes material frame (24), the outside of frame (1) is provided with material frame (24), the material frame (24) is opposite below the left rocker arm (22).

8. The LCM display screen detection device of claim 7, wherein, It also includes conveyor (25), the other side of frame (1) is provided with conveyor (25), the synchronous belt of conveyor (25) is opposite below the right rocker arm (22).

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