Liquid crystal screen lightening test device

Abstract

The utility model relates to the field of liquid crystal screen detection, and particularly discloses a liquid crystal screen lightening testing device which comprises a rack, a testing platform is arranged on the rack, two feeding ports are arranged on the testing platform, and a pushing mechanism is arranged in the rack. The containing discs are used for containing a liquid crystal screen to be detected and are stacked in the pushing mechanism, an air cylinder is arranged on one side of the feeding port, the air cylinder is connected with a probe, the pushing mechanism pushes the containing discs out of the feeding port, the air cylinder pushes the probe so that the probe can be in butt joint with a golden finger of an FPC on the liquid crystal screen, and a visual sensor is arranged at the position, located above the feeding port, of the rack. A display screen is arranged at the front end of the rack and used for displaying a test result in real time, and a proximity switch is arranged on the side, located at the feeding port, of the test platform; the device can test two groups of liquid crystal screens at the same time, greatly improves the test efficiency, does not need to manually observe the liquid crystal screens, reduces the work intensity, and improves the test precision.

Description

Technical Field

[0001] The utility model relates to the field of liquid crystal screen detection, in particular to a liquid crystal screen lighting test device. Background Technique

[0002] At present, with the increasing demand for liquid crystal screens in the market, customers pay more attention to the quality of products. Various specifications and models of liquid crystal screens emerge in an endless stream in the market. Factory testing has become an essential link. The lighting test of the liquid crystal screen is particularly important in the testing. In the lighting test of the liquid crystal screen, most are manual tests. The test instrument is docked with the FPC on the liquid crystal screen, and then the operator observes whether there are defects on the screen manually. Staring at the screen with human eyes for a long time is prone to visual fatigue, resulting in the problem of missed inspection, and it is also easy to damage the eyes. This manual detection method has low efficiency and high working intensity. Therefore, this application proposes a liquid crystal screen lighting test device to solve the above problems. Content of the Utility Model

[0003] Aiming at the existing problems, the utility model provides a liquid crystal screen lighting test device, which can effectively solve the problems raised in the background technique.

[0004] To solve the above problems, the utility model adopts the following technical scheme:

[0005] A liquid crystal screen lighting test device includes a frame. A test platform is arranged on the frame. Two feeding ports are arranged on the test platform. A pushing mechanism is arranged inside the frame. A storage tray is used to store the liquid crystal screen to be tested. The storage trays are stacked in the pushing mechanism. A cylinder is arranged on one side of the feeding port. The cylinder is connected with a detection needle. The pushing mechanism pushes the storage tray out from the feeding port. The cylinder pushes the detection needle so that the detection needle is docked with the gold fingers of the FPC on the liquid crystal screen. A visual sensor is arranged above the feeding port on the frame, and a display screen is arranged at the front end of the frame. The display screen is used to display the test results in real time. A proximity switch is arranged on one side of the feeding port on the test platform.

[0006] As a further scheme of the utility model: The pushing mechanism includes a pushing plate, a lead screw and a pushing motor. The two ends of the lead screw are movably connected with the frame. The lead screw is threadedly connected with the pushing plate, and the pushing plate is correspondingly arranged with the feeding port. One end of the lead screw is drivingly connected with a pushing motor.

[0007] As a further scheme of the utility model: Limiting grooves are arranged around the pushing plate. Limiting columns are fixedly connected to the frame. The limiting grooves slide along the limiting columns.

[0008] As a further solution of the present utility model: the upper surface of the storage tray is provided with a first placement groove and a second placement groove. The first placement groove is used for limiting and placing the liquid crystal screen, and the second placement groove is used for limiting and placing the gold finger end of the FPC. And a notch is provided on one side of the storage tray close to the second placement groove, and the detection needle passes through the notch to dock with the gold finger.

[0009] As a further solution of the present utility model: the inner wall of the second placement groove is provided with an elastic pressing member for pressing and fixing the gold finger end of the FPC.

[0010] As a further solution of the present utility model: limit openings are provided at the four corners of the bottom of the storage tray, and limit blocks are provided at the four corners of the top surface of the storage tray. After the storage trays are stacked, the limit openings on the upper limit tray are inserted into the limit blocks of the lower storage tray.

[0011] As a further solution of the present utility model: positioning blocks corresponding to the limit openings are fixed on the pushing plate.

[0012] As a further solution of the present utility model: an indicator light is provided on one side of the test platform at the feeding port. The indicator light is set to three, namely a red light, a yellow light and a green light.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: the present utility model pushes the storage tray out from the feeding port through the pushing mechanism. After the proximity switch detects the storage tray, the pushing mechanism stops pushing the feeding port, and the air cylinder pushes the detection needle to dock with the gold finger on the FPC of the liquid crystal screen in the storage tray, the electricity is connected to the liquid crystal screen, the visual sensor takes a picture of the display screen of the liquid crystal screen, and the taken picture and the test result are displayed on the display screen. It can test two groups of liquid crystal screens at the same time, greatly improving the test efficiency, eliminating the need for manual observation of the liquid crystal screen, reducing the work intensity, and improving the test accuracy. Description of the Drawings

[0014] Figure 1 It is a three-dimensional schematic diagram of the overall structure of a liquid crystal screen lighting test device;

[0015] Figure 2 It is a three-dimensional schematic diagram of the pushing mechanism in a liquid crystal screen lighting test device;

[0016] Figure 3 It is a stacking schematic diagram of the storage trays in a liquid crystal screen lighting test device.

[0017] In the figure: 1, frame; 2, test platform; 3, feeding port; 4, pushing mechanism; 401, pushing plate; 402, lead screw; 403, pushing motor; 404, limit groove; 405, limit post; 406, positioning block; 5, holding tray; 501, first placement groove; 502, second placement groove; 503, notch; 504, elastic pressing member; 505, limit port; 506, limit block; 6, air cylinder; 7, detection needle; 8, vision sensor; 9, display screen; 10, proximity switch; 11, indicator light. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Combined with Figures 1 to 3 Describing this embodiment, this embodiment provides a liquid crystal screen lighting test device, which includes a frame 1. A test platform 2 is provided on the frame 1. Two feeding ports 3 are provided on the test platform 2. A pushing mechanism 4 is provided inside the frame 1. A plurality of holding trays 5 are stacked inside the pushing mechanism 4. The holding trays 5 are used to hold the liquid crystal screens to be tested. An air cylinder 6 is provided on one side of the feeding port 3. The air cylinder 6 is connected with a detection needle 7. The pushing mechanism 4 pushes the holding tray 5 out from the feeding port 3. The air cylinder 6 pushes the detection needle 7 so that the detection needle 7 is docked with the gold fingers of the FPC on the liquid crystal screen. A vision sensor 8 is provided above the feeding port 3 of the frame 1, and a display screen 9 is provided at the front end of the frame 1. The display screen 9 is used to display the test results in real time. The test results include the lighting shooting pictures of the liquid crystal screen, whether the test is qualified or unqualified, and the number of tested liquid crystal screens, the number of qualified ones and the number of unqualified ones. A proximity switch 10 is provided on one side of the feeding port 3 of the test platform 2. A control host is provided inside the frame 1. The air cylinder 6, the vision sensor 8 and the proximity switch 10 are all connected to the control host. The vision sensor 8 is a high-definition camera.

[0020] The pusher mechanism 4 includes a pusher plate 401, a lead screw 402, and a pusher motor 403. The two ends of the lead screw 402 are movably connected to the frame 1. The lead screw 402 is threadedly connected to the pusher plate 401, and the pusher plate 401 is correspondingly arranged with the feeding port 3. One end of the lead screw 402 is drivingly connected to the pusher motor 403. There are two lead screws 402 which are respectively arranged at the diagonals of the pusher plate 401. The pusher motor 403 is a forward and reverse servo motor. The pusher motor 403 drives the lead screw 402 to rotate, thereby driving the pusher plate 401 to move up and down. And a limiting groove 404 is arranged around the pusher plate 401, and a limiting post 405 is fixedly connected to the frame 1. The limiting groove 404 slides along the limiting post 405. The limiting post 405 is attached to the side surface of the storage tray 5, avoiding the inclination of the storage tray 5 and ensuring the verticality of the stacking of the storage tray 5.

[0021] The upper surface of the storage tray 5 is provided with a first placement groove 501 and a second placement groove 502. The first placement groove 501 is used for limiting and placing the liquid crystal screen, and the second placement groove 502 is used for limiting and placing the gold finger end of the FPC. And a notch 503 is arranged on one side of the storage tray 5 close to the second placement groove 502. The detection needle 7 passes through the notch 503 to be docked with the gold finger. An elastic pressing member 504 is arranged on the inner wall of the second placement groove 502 for pressing and fixing the gold finger end of the FPC. The liquid crystal screen is placed into the first placement groove 501, and the gold finger end of the FPC is placed into the second placement groove 502 and is pressed and fixed by the elastic pressing member 504.

[0022] Limit openings 505 are arranged at the four corners of the bottom of the storage tray 5, and limit blocks 506 are arranged at the four corners of the top surface of the storage tray 5. After the storage trays 5 are stacked, the limit openings 505 on the upper layer of the storage trays are inserted into the limit blocks 506 of the lower layer of the storage trays 5, improving the stacking stability and verticality of the storage trays 5. At the same time, positioning blocks 406 corresponding to the limit openings 505 are fixed on the pusher plate 401, facilitating the positioning and placement of the storage trays 5.

[0023] An indicator light 11 is arranged on one side of the test platform 2 located at the feeding port 3. There are three indicator lights 11, namely a red light, a yellow light, and a green light. When the image of the liquid crystal screen captured by the vision sensor 8 has defects after being analyzed by the system, the red light is displayed and marked as unqualified. When the image of the liquid crystal screen captured has no defects, the green light is displayed. After the vision sensor 8 captures the pusher plate 401, the yellow light is displayed to prompt the staff to add materials in time.

[0024] The working principle of the present utility model is as follows: When the switch button on the frame 1 is activated, the feeding mechanism 4 pushes the holding tray 5 out from the feeding port 3. After the proximity switch 10 detects the holding tray 5, the feeding mechanism 4 stops pushing the feeding port 3. Then, the air cylinder 6 pushes the detection needle 7 to dock with the gold fingers on the FPC of the liquid crystal screen in the holding tray 5, electrically connecting the liquid crystal screen. The visual sensor 8 captures the display image of the liquid crystal screen and displays the captured image and the test result on the display screen 9. It can test two groups of liquid crystal screens simultaneously, greatly improving the test efficiency, eliminating the need for manual observation of the liquid crystal screen, reducing the work intensity, and improving the test accuracy.

[0025] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0026] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A liquid crystal screen lighting test device, comprising a frame, characterized in that: A test platform is provided on the frame, two feeding ports are provided on the test platform, a pushing mechanism is provided in the frame; a holding tray is used to hold the LCD screen to be tested, the holding trays are stacked in the pushing mechanism, a cylinder is provided on one side of the feeding port, a detection needle is connected to the cylinder, the pushing mechanism pushes the holding tray out of the feeding port, the cylinder pushes the detection needle, so that the detection needle docks with the gold finger of the FPC on the LCD screen, a visual sensor is provided on the frame above the feeding port, and a display screen is provided at the front end of the frame, the display screen is used to display the test results in real time, and a proximity switch is provided on one side of the feeding port of the test platform.

2. A liquid crystal screen lighting test device according to claim 1, characterized in that: The pushing mechanism includes a pushing plate, a screw rod and a pushing motor. Both ends of the screw rod are movably connected to the frame. The screw rod is threadedly connected to the pushing plate. The pushing plate is correspondingly arranged to the feeding port. One end of the screw rod is transmission-connected to the pushing motor.

3. The LCD lighting test device according to claim 2, characterized in that: Limiting grooves are arranged around the push plate, and limiting columns are fixedly connected to the frame, and the limiting grooves slide along the limiting columns.

4. The LCD lighting test device according to claim 2, characterized in that: The upper surface of the holding tray is provided with a first placement groove and a second placement groove, the first placement groove is used for limiting the placement of the LCD screen, and the second placement groove is used for limiting the placement of the gold finger end of the FPC, and a notch is provided on one side of the holding tray close to the second placement groove, and the detection needle passes through the notch and docks with the gold finger.

5. The LCD lighting test device according to claim 4, characterized in that: An elastic pressing piece is provided on the inner wall of the second placement groove for pressing and fixing the gold finger end of the FPC.

6. The LCD lighting test device according to claim 4, characterized in that: The four corners of the bottom of the containing tray are provided with limiting openings, and the four corners of the top surface of the containing tray are provided with limiting blocks. After the containing trays are stacked, the limiting openings on the upper limiting tray are plugged into the limiting blocks of the lower containing tray.

7. A liquid crystal screen lighting test device according to claim 6, characterized in that: A positioning block corresponding to the limiting opening is fixed on the push plate.

8. The LCD lighting test device according to claim 1, characterized in that: The test platform is provided with indicator lights on one side of the feeding port, and the indicator lights are set to three, namely, a red light, a yellow light and a green light.

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