A detecting device for small-size liquid crystal screen

Abstract

This utility model provides a testing device for small-sized LCD screens, including a frame, a testing mechanism, and a conveying mechanism. The testing mechanism and the conveying mechanism are located on the upper surface of the frame. One end of the testing mechanism is adjacent to the end of the conveying mechanism. A material transfer mechanism is provided on one side of the conveying mechanism, which is located adjacent to the testing mechanism. The testing mechanism includes an industrial camera, a screen carrier, and a carrier mold. The industrial camera is located on the upper end of the screen carrier, and the carrier mold is located on the screen carrier. A feeding limit frame is provided between the screen carrier and the conveying mechanism. By organically integrating the conveying mechanism, the material transfer mechanism, and the testing mechanism and enabling them to work together, the entire process of small-sized LCD screens from loading and positioning to testing is automated. By using an industrial camera in conjunction with the screen carrier to test the small LCD screens placed on the carrier mold, not only is the workload of personnel reduced, but the detection rate and accuracy of defects such as dark spots, bright spots, and scratches are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of LCD screen testing equipment, and more particularly to a testing device for small-sized LCD screens. Background Technology

[0002] With the rapid development of consumer electronics, smart homes, wearable devices, and other industries, the demand for small-sized LCD / OLED displays is increasing daily, and the requirements for their display quality are becoming increasingly stringent. During the manufacturing process, various defects inevitably occur in the screens, such as dark spots, bright spots, black spots, scratches, and mura (uniform brightness).

[0003] Currently, in the production and repair of screens, initial inspection is usually carried out manually. However, visual inspection is prone to fatigue and missed inspections, and its speed is limited, resulting in low production efficiency. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a detection device for small-sized LCD screens, which solves the technical problem that in the process of screen production and maintenance, the initial inspection is usually carried out by manual inspection. However, the visual inspection method is not only prone to fatigue and thus leads to missed inspections, but also has a speed limit, resulting in low production efficiency.

[0006] (II) Technical Solution

[0007] The purpose of this utility model is to provide a testing device for small-sized LCD screens, which includes a frame, a testing mechanism, and a conveying mechanism. The testing mechanism and the conveying mechanism are disposed on the upper surface of the frame. One end of the testing mechanism is adjacent to the end of the conveying mechanism. A material transfer mechanism is disposed on one side of the conveying mechanism, which is located adjacent to the testing mechanism. The testing mechanism includes an industrial camera, a screen carrier, and a carrier mold. The industrial camera is disposed on the upper end of the screen carrier, and the carrier mold is disposed on the screen carrier. A feeding limit frame is disposed between the screen carrier and the conveying mechanism.

[0008] Preferably, the upper end of the frame is provided with a detection display, and the lower end of the frame is provided with support legs.

[0009] Preferably, the detection mechanism further includes a detection bracket, a traversing mechanism, and a lifting assembly. The traversing mechanism is connected to the detection bracket and the lifting assembly, and the industrial camera is mounted on the lifting assembly.

[0010] Preferably, the lateral movement mechanism includes a lateral movement bracket, a lateral movement motor, a lateral movement screw, and a connecting nut. The lateral movement motor is mounted on the lateral movement bracket and connected to the lateral movement screw through its output end. The connecting nut is adapted to the lateral movement screw and connected to the lifting assembly.

[0011] Preferably, the lifting assembly includes a connecting plate, a lifting mounting plate, a lifting slide rail, and a lifting slider. One end of the connecting plate is connected to the transverse movement mechanism, and the lifting mounting plate is connected to the other end of the connecting plate. The lifting slide rail is installed at the end of the lifting mounting plate and is adapted to the lifting slider. The industrial camera is installed on the lifting slider.

[0012] Preferably, the conveying mechanism includes a conveyor motor, a conveyor belt, and a conveyor frame. The conveyor motor is connected to the conveyor belt via a drive shaft, and the conveyor belt is mounted on the conveyor frame.

[0013] Preferably, the material transfer mechanism includes a linear guide module, a lifting module, a connecting bracket, and a suction cylinder. The linear guide module is connected to the lifting module, the lifting module is connected to the connecting bracket, the connecting bracket extends outward from one end of the lifting module and is connected to the suction cylinder, and the lower end of the suction cylinder is connected to a material transfer suction cup.

[0014] Preferably, the screen carrier includes a support frame, a drive motor, a drive belt, and drive wheels. The number of drive wheels is four. Both ends of the support frame are provided with opposite drive wheels. The drive wheels are sleeved on the drive belt. The output end of the drive motor is connected to the drive wheels. The upper end of the drive belt is connected to the carrier mold.

[0015] Preferably, the carrier mold is provided with a placement groove.

[0016] Preferably, the feeding limit frame is disposed between the screen carrier and the conveying mechanism, and is located on the side close to the conveying mechanism.

[0017] (III) Beneficial Effects

[0018] By organically integrating and coordinating the conveying mechanism, material transfer mechanism, and inspection mechanism, the entire process of small-sized LCD screens from loading and positioning to inspection is fully automated. By using an industrial camera in conjunction with a screen carrier to inspect the small LCD screens placed on the carrier mold, not only is the workload of personnel reduced, but the detection rate and accuracy of defects such as dark spots, bright spots, and scratches are also greatly improved. Attached Figure Description

[0019] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0020] Figure 1 This is a 3D view of the overall structure of the detection device with a small LCD screen;

[0021] Figure 2 It is a detection device for small-sized LCD screens. Figure 1 Enlarged view of point A in the image;

[0022] Figure 3 This is the front view of the conveyor structure of the small-sized LCD screen detection device mounted on the frame;

[0023] Figure 4 It is a 3D view of the screen carrier of the small-sized LCD screen detection device;

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Rack;

[0026] 2. Testing mechanism; 20. Industrial camera; 21. Screen carrier; 210. Support frame; 211. Drive motor; 212. Drive belt; 213. Drive wheel; 22. Carrier mold; 220. Placement slot; 23. Testing bracket; 24. Transverse movement mechanism; 240. Transverse movement bracket; 241. Transverse movement motor; 242. Transverse movement screw; 243. Connecting nut; 25. Lifting assembly; 250. Connecting plate; 251. Lifting mounting plate; 252. Lifting slide rail; 253. Lifting slider;

[0027] 3. Conveying mechanism; 30. Conveying motor; 31. Conveying belt; 32. Conveying frame;

[0028] 4. Material transfer mechanism; 40. Linear guide rail module; 41. Lifting module; 42. Connecting bracket; 43. Suction cylinder;

[0029] 5. Feeding limit frame; 6. Support feet. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0031] The following is in conjunction with the appendix Figures 1 to 4To further describe, this utility model discloses a testing device for small-sized LCD screens, including a frame 1, a testing mechanism 2, and a conveying mechanism 3. The testing mechanism 2 and the conveying mechanism 3 are disposed on the upper end surface of the frame 1. One end of the testing mechanism 2 is adjacent to the end of the conveying mechanism 3. A transfer mechanism 4 is disposed on one side of the conveying mechanism 3. The conveying mechanism 3 transports the small-sized LCD screen to be tested to its end. The transfer mechanism 4 picks up the LCD screen to be tested according to the position signal of the conveying mechanism 3. The transfer mechanism 4 is located adjacent to the testing mechanism 2. The 2 includes an industrial camera 20, a screen carrier 21, and a carrier mold 22. The industrial camera 20 is set on the upper end of the screen carrier 21. The material transfer mechanism 4 places the small-sized LCD screen to be inspected onto the carrier mold 22 of the inspection mechanism 2, and then the industrial camera 20 takes pictures of the small-sized LCD screen to be inspected. The carrier mold 22 is set on the screen carrier 21. A feeding limit frame 5 is set between the screen carrier 21 and the conveying mechanism 3 to limit the small-sized LCD screen to be inspected in order to enter the next inspection procedure.

[0032] In a preferred embodiment, the upper end of the frame 1 is also provided with a detection display, which will display the detection results provided by the industrial camera 20. This process is existing technology. The lower end of the frame 1 is also provided with a support leg 6 to support the device.

[0033] In a preferred embodiment, the detection mechanism 2 further includes a detection bracket 23, a transverse mechanism 24, and a lifting assembly 25. The screen carrier 21 is disposed below the transverse mechanism 24. The transverse mechanism 24 is connected to the detection bracket 23 and the lifting assembly 25. The industrial camera 20 is disposed on the lifting assembly 25 so that its height can be adjusted by the lifting assembly 25 to meet the detection requirements.

[0034] In a preferred embodiment, the transverse mechanism 24 includes a transverse support 240, a transverse motor 241, a transverse screw 242, and a connecting nut 243. The transverse motor 241 is mounted on the transverse support 240 and connected to the transverse screw 242 through its output end. The connecting nut 243 is adapted to the transverse screw 242 and connected to the lifting assembly 25. Driven by the transverse motor 241, the transverse screw 242 rotates and drives the connecting nut 243 to adjust the position of the lifting assembly 25 so that the industrial camera 20 can accurately perform recognition work.

[0035] In a preferred embodiment, the lifting assembly 25 includes a connecting plate 250, a lifting mounting plate 251, a lifting slide rail 252, and a lifting slider 253. One end of the connecting plate 250 is connected to the transverse mechanism 24, and the lifting mounting plate 251 is connected to the other end of the connecting plate 250. The lifting slide rail 252 is mounted on the end of the lifting mounting plate 251 and is adapted to the lifting slider 253. The industrial camera 20 is mounted on the lifting slider 253 so that the height of the industrial camera 20 can be adjusted by moving the lifting slider 253.

[0036] In a preferred embodiment, the conveying mechanism 3 includes a conveying motor 30, a conveying belt 31, and a conveying frame 32. The conveying motor 30 is connected to the conveying belt 31 through a drive shaft. The conveying belt 31 is mounted on the conveying frame 32 and, driven by the conveying motor 30, sends the small-sized LCD screen to be tested to the other end of the conveying mechanism 3 for transfer by the material transfer mechanism 4.

[0037] In a preferred embodiment, the material transfer mechanism 4 includes a linear guide module 40, a lifting module 41, a connecting bracket 42, and a suction cylinder 43. The linear guide module 40 is connected to the lifting module 41. The linear guide module 40 and the lifting module 41 are existing technologies. The lifting module 41 is connected to the connecting bracket 42. The lifting module 41 drives the connecting bracket 42 to move up and down. The connecting bracket 42 extends outward from one end of the lifting module 41 and is connected to the suction cylinder 43. The lower end of the suction cylinder 43 is connected to a material transfer suction cup (not shown). Under the action of the suction cylinder 43, the small-sized LCD screen to be tested is transferred to the carrier mold 22 through the material transfer suction cup, and then inspected by the industrial camera 20 under the action of the screen carrier 21.

[0038] In a preferred embodiment, the screen carrier 21 includes a support frame 210, a drive motor 211, a drive belt 212, and drive wheels 213. There are four drive wheels 213. Both ends of the support frame 210 are provided with opposite drive wheels 213. The drive wheels 213 are sleeved on the drive belt 212. The output end of the drive motor 211 is connected to the drive wheels 213. The upper end of the drive belt 212 is connected to the carrier mold 22. Driven by the drive motor 211, the carrier mold 22 on the drive belt 212 reciprocates. In conjunction with the transfer mechanism 4, the small-sized LCD screens to be inspected are passed one by one through the industrial camera 20 for inspection.

[0039] In a preferred embodiment, the upper end of the carrier mold 22 is recessed to form a placement groove 220, which is used to place a small-sized LCD screen and to limit the position of the small-sized LCD screen.

[0040] In a preferred embodiment, the feeding limit frame 5 is disposed between the screen carrier 21 and the conveying mechanism 3, and close to the side of the conveying mechanism 3, so as to limit the small-sized LCD screen to be tested sent by the conveying mechanism 3. The action of the material transfer mechanism 4 adsorbs and transfers the small-sized LCD screen to be tested onto the carrier mold 22, and is detected by the industrial camera 20.

[0041] In summary, by organically integrating and coordinating the conveying mechanism, material handling mechanism, and inspection mechanism, the entire process of small-sized LCD screens from loading and positioning to inspection is fully automated. Furthermore, by using an industrial camera in conjunction with a screen carrier to inspect the small LCD screens placed on the carrier mold, not only is the workload of personnel reduced, but the industrial camera's inspection and identification of the small LCD screens clearly reveals various defects such as dark spots, bright spots, black spots, scratches, and mura (uneven brightness) for the next process, greatly improving the detection rate and accuracy of defects such as dark spots, bright spots, and scratches.

[0042] Although embodiments of the present invention have been shown above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications and variations to the above embodiments, but such modifications are all included within the broad scope of the foregoing disclosure, drawings and claims.

Claims

1. A testing device for a small-sized LCD screen, comprising a frame, a testing mechanism, and a conveying mechanism, wherein the testing mechanism and the conveying mechanism are disposed on the upper end face of the frame, and one end of the testing mechanism is adjacent to the end of the conveying mechanism, characterized in that: A material transfer mechanism is provided on one side of the conveying mechanism. The material transfer mechanism is located adjacent to the detection mechanism. The detection mechanism includes an industrial camera, a screen carrier, and a carrier mold. The industrial camera is located at the upper end of the screen carrier, and the carrier mold is located on the screen carrier. A feeding limit frame is provided between the screen carrier and the conveying mechanism.

2. The detection device for small-sized LCD screens according to claim 1, characterized in that: The upper end of the frame is equipped with a detection display, and the lower end of the frame is equipped with support legs.

3. The detection device for small-sized LCD screens according to claim 1, characterized in that: The detection mechanism also includes a detection bracket, a traversing mechanism, and a lifting assembly. The traversing mechanism is connected to the detection bracket and the lifting assembly, and the industrial camera is mounted on the lifting assembly.

4. The detection device for small-sized LCD screens according to claim 3, characterized in that: The lateral movement mechanism includes a lateral movement bracket, a lateral movement motor, a lateral movement screw, and a connecting nut. The lateral movement motor is mounted on the lateral movement bracket and connected to the lateral movement screw through its output end. The connecting nut is adapted to the lateral movement screw and connected to the lifting assembly.

5. The detection device for small-sized LCD screens according to claim 3, characterized in that: The lifting assembly includes a connecting plate, a lifting mounting plate, a lifting slide rail, and a lifting slider. One end of the connecting plate is connected to the transverse movement mechanism, and the lifting mounting plate is connected to the other end of the connecting plate. The lifting slide rail is installed at the end of the lifting mounting plate and is adapted to the lifting slider. The industrial camera is installed on the lifting slider.

6. The detection device for small-sized LCD screens according to claim 1, characterized in that: The conveying mechanism includes a conveyor motor, a conveyor belt, and a conveyor frame. The conveyor motor is connected to the conveyor belt via a drive shaft, and the conveyor belt is mounted on the conveyor frame.

7. The detection device for small-sized LCD screens according to claim 1, characterized in that: The material transfer mechanism includes a linear guide module, a lifting module, a connecting bracket, and a suction cylinder. The linear guide module is connected to the lifting module, the lifting module is connected to the connecting bracket, the connecting bracket extends outward from one end of the lifting module and is connected to the suction cylinder, and the lower end of the suction cylinder is connected to a material transfer suction cup.

8. The detection device for small-sized LCD screens according to claim 1, characterized in that: The screen carrier includes a support frame, a drive motor, a drive belt, and drive wheels. There are four drive wheels. Both ends of the support frame are provided with opposite drive wheels. The drive wheels are sleeved on the drive belt. The output end of the drive motor is connected to the drive wheels. The upper end of the drive belt is connected to the carrier mold.

9. The detection device for small-sized LCD screens according to claim 1, characterized in that: The carrier mold is provided with a placement slot.

10. The detection device for small-sized LCD screens according to claim 1, characterized in that: The feeding limit frame is located between the screen carrier and the conveying mechanism, and is close to the side of the conveying mechanism.

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