Detection device for liquid crystal display television display screen

Abstract

The invention belongs to the technical field of display screen detection, and particularly relates to a detection device for a liquid crystal display television display screen. The device comprises a conveying device and a detection mechanism, the detection mechanism comprises a pair of fixing frames, an X-axis conveying mechanism and a Y-axis conveying mechanism are connected between the fixing frames, and an adsorption assembly is connected to the Y-axis conveying mechanism and used for sucking a display screen; the two ends of the X-axis conveying mechanism are fixedly connected with turnover seats, the turnover seats are rotationally connected with the fixing frame, and the fixing frame is provided with a turnover motor used for driving the turnover seats to rotate. A supporting frame is fixedly connected between the two fixing frames, a notch is formed in the supporting frame, and a pair of detection bases are symmetrically and fixedly connected in the notch. A display screen is sucked through the adsorption assembly, the turnover motor drives the display screen to turn over to the detection bases, and the fpc of the display screen is flattened and pressed in a positioning groove through the downward pressing mechanism; and the fpc golden finger part is contacted and electrified with the probe seat, so that the purpose of automatic detection is achieved.

Description

Technical Field

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

[0002] With the development of science and technology, people's lives are becoming more and more advanced. Coupled with the advent of the digital age, the high-tech industry has flourished. The scale of the LCD TV industry and the fierce competition among international manufacturers are expanding. LCD screens have many advantages, such as high image quality, thin thickness, light weight, low driving voltage and low power consumption.

[0003] To ensure product quality, LCD TV screens typically require inspection during manufacturing, including testing of their brightness and color. This testing requires the screen to be powered on. However, due to the relatively flexible FPC (Fiber Optic Circuit) (FPC) of a display, this is typically done manually, with the screen then visually inspected. Manual inspection is inefficient, labor-intensive, and prone to missed detections and misjudgments. Summary of the Invention

[0004] In response to the deficiencies in the prior art, the present invention provides a detection device for a liquid crystal television display screen. The detection mechanism sucks and flips the display screen of the conveying device onto a detection seat, and automatically powers on the display screen for detection, aiming to solve the problems in the background technology.

[0005] In order to achieve the above technical objectives, the specific technical solutions of the present invention are as follows: the detection device for liquid crystal television display screens proposed in the present invention includes: a conveying device for conveying the display screen; a detection mechanism, arranged above the conveying device, for detecting the display screen on the conveying device; the detection mechanism includes a pair of fixed frames, an X-axis conveying mechanism and a Y-axis conveying mechanism are connected between the fixed frames, the Y-axis conveying mechanism is connected to the X-axis conveying mechanism, and the Y-axis conveying mechanism is connected to the adsorption assembly for sucking the display screen; a flip seat is fixedly connected to both ends of the X-axis conveying mechanism, the flip seat is rotatably connected to the fixed frame, and a flip motor for driving the flip seat to rotate is installed on the fixed frame; a support frame is fixedly connected between the two fixed frames, the support frame is arranged above the adsorption assembly, and a notch is provided on the support frame, in which a pair of detection seats are symmetrically fixedly connected for power-on detection of the display screen.

[0006] Furthermore, the adsorption assembly includes a connecting frame, which is slidably connected to a first slider, and a first lifting cylinder is installed on the connecting frame to drive the first slider to slide. The first slider is fixedly connected to an adsorption frame, and the adsorption frame is installed with at least two suction nozzles for sucking the display screen.

[0007] Furthermore, the detection seat is provided with a groove for placing the display screen, the groove is provided with a positioning groove that cooperates with the FPC of the display screen, and the positioning groove is provided with a probe seat that cooperates with the gold finger of the FPC.

[0008] Furthermore, a pressing mechanism is fixedly installed on the support frame for electrically connecting the gold finger and the probe seat; the pressing mechanism includes a cylinder frame, a track plate is fixedly connected below the cylinder frame, a second slider is slidably connected to the track plate, and a second lifting cylinder is installed on the cylinder frame for driving the second slider to slide.

[0009] Furthermore, a bracket is fixedly connected to the second sliding block, a rotating rod is rotatably connected to the bracket, and a pressure wheel is connected to the end of the rotating rod for smoothing the FPC of the display screen.

[0010] Furthermore, the second slider is fixedly connected to a slide rod, a moving block is slidably connected to the slide rod, a connecting rod is hinged between the moving block and the rotating rod, and a cylindrical spring is connected to the surface of the slide rod.

[0011] Furthermore, the bracket is fixedly connected to a clamping assembly, which includes a groove rail frame, a pressure rod movably connected in the groove rail frame, a pressure block fixedly connected to the lower end of the pressure rod, and a lifting block slidably connected in the groove rail frame for driving the pressure rod to rise and fall.

[0012] Furthermore, a driving motor is installed on the groove rail frame, and a cam is fixedly installed on the driving motor shaft for driving the lifting block to descend. A first spring is connected between the lifting block and the pressure rod; and a second spring is connected between the pressure rod and the bottom of the groove rail frame.

[0013] Furthermore, the pressure rod is provided with a stop seat which is connected to the first spring and the second spring, and the lower surface of the lifting block is fixedly connected to a spring seat which is connected to the first spring.

[0014] Furthermore, a plurality of adsorption holes are provided in the groove for adsorbing and fixing the display screen; a camera frame is fixedly connected to the top of the support frame, and an industrial detection camera and a CCD positioning camera are respectively installed on the camera frame.

[0015] The beneficial effects of the present invention are:

[0016] 1. The present invention absorbs the display screen through the adsorption component, and the flip motor drives the display screen to flip onto the detection seat, and the pressing mechanism flattens the display screen FPC and presses it into the positioning groove to ensure the accurate position of the FPC. At the same time, the FPC gold finger part is in contact with the probe seat and energized, thereby achieving the purpose of automatic detection.

[0017] 2. The present invention uses an X-axis moving mechanism and a Y-axis moving mechanism and a CCD positioning camera to position the display screen, thereby accurately controlling the position of the display screen and ensuring the accurate position of the display screen on the detection seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic structural diagram of the detection mechanism proposed in the present invention.

[0020] Figure 3 This is a schematic structural diagram of the adsorption component proposed in the present invention.

[0021] Figure 4 This is a structural diagram of the support frame, detection seat and pressing mechanism proposed in the present invention.

[0022] Figure 5 This is a schematic structural diagram of the detection base proposed in the present invention.

[0023] Figure 6 This is a structural schematic diagram of the pressing mechanism proposed in the present invention.

[0024] Figure 7 This is a schematic structural diagram of the compression assembly proposed in the present invention.

[0025] Figure 8 This is a schematic structural diagram of the display screen proposed in the present invention.

[0026] The corresponding names of the reference numerals in the figures are as follows: 100. Conveying device; 200, detection mechanism; 201, fixed frame; 202, flip seat; 203, flip motor; 204, X-axis conveying mechanism; 205, Y-axis conveying mechanism; 300, adsorption assembly; 301, connecting frame; 302, first lifting cylinder; 303, first slider; 304, adsorption frame; 305, suction nozzle; 400, support frame; 401, notch; 402, camera frame; 403, industrial inspection camera; 404, CCD positioning camera; 500, pressing mechanism; 501, cylinder frame; 502, track plate; 503, second lifting cylinder; 504, second slider; 505, pressing assembly; 506, rotating rod; 507, pressing wheel; 508, moving block; 509, cylindrical spring; 510, connecting rod; 511, stopper; 512, bracket; 513, slide bar; 5050, cam; 5051, groove rail frame; 5052, lifting block; 5053, pressing rod; 5054, pressing block; 5055, stopper; 5056, first spring; 5057, spring seat; 5058, second spring; 5059, driving motor; 600, detection seat; 601, groove; 602, adsorption hole; 603, positioning groove; 604, probe seat; 700, display screen; 701, display screen FPC; 702, FPC gold finger. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] This embodiment discloses a detection device for a liquid crystal television display screen, which is suitable for detecting a small-sized (such as 4.3 inches, 5.7 inches) liquid crystal television direct display screen; Figures 1-8 As shown, it includes: a conveying device 100, which is used to convey the display screen 700, wherein the position of the display screen 700 on the conveying device 100 is neatly aligned and the FPC position is in the same direction; a detection mechanism 200, which is arranged above the conveying device 100 and is used to detect the display screen 700 on the conveying device 100; when the conveying device 100 conveys the display screen 700 to the bottom of the detection mechanism 200, the display screen 700 can be sensed by the sensor, the conveying device 100 is controlled to stop moving, and the detection mechanism 200 absorbs the display screen; the detection mechanism 200 includes a pair of fixed frames 201, the fixed frames 201 are respectively installed on both sides of the conveying device 100, and an X-axis conveying mechanism 204 and a Y-axis conveying mechanism 205 are connected between the fixed frames 201, the Y-axis conveying mechanism 205 is connected to the X-axis conveying mechanism 204, the X-axis conveying mechanism 204 can drive the Y-axis conveying mechanism 205 to move along the X direction, and the Y-axis conveying mechanism 205 is connected to the adsorption component 300, which is used to absorb the display screen 700, and the Y-axis The conveying mechanism 205 drives the display screen to move along the Y direction, wherein both the X-axis conveying mechanism 204 and the Y-axis conveying mechanism 205 adopt a drive structure of a motor and a screw; the two ends of the X-axis conveying mechanism 204 are fixedly connected to the flip seat 202, the two flip seats 202 are fixedly connected, the flip seat 202 is rotatably connected to the fixed frame 201, and the fixed frame 201 is equipped with a flip motor 203 for driving the flip seat 202 to rotate; the two fixed frames 201 are fixedly connected to the support frame 400, the support frame 40 0 is arranged above the adsorption component 300, and a notch 401 is provided on the support frame 400. A pair of detection seats 600 are symmetrically fixedly connected in the notch 401 for power-on detection of the display screen 700. After the adsorption component 300 absorbs the display screen 700, the flip motor 203 drives the flip seat 202 to rotate 180°, flipping the display screen 700 to a position above the detection mechanism 200, and then descending to the detection seat 600 for power-on detection. During detection, it can be adjusted to a spot check mode or a full check mode.

[0029] like Figure 3As shown, the adsorption assembly 300 includes a connecting frame 301, a first slider 303 is slidably connected to the connecting frame 301, and a first lifting cylinder 302 is installed on the connecting frame 301 for driving the first slider 303 to slide, a suction frame 304 is fixedly connected to the first slider 303, and at least two suction nozzles 305 are installed on the suction frame 304, and the suction nozzles 305 are connected to an external vacuum generator through a vacuum tube, and the suction nozzles 305 are used to suck the display screen 700; during adsorption, the first lifting cylinder 302 drives the adsorption frame 304 to descend, so that the suction nozzles 305 5 contacts the surface of the display screen 700 and sucks the display screen onto the suction nozzle 305. Then, the first lifting cylinder 302 retracts half of its stroke, driving the display screen 700 to rise. The flip motor 203 drives the flip seat 202 to rotate, flipping the display screen 700 to above the detection seat 600. The position of the display screen 700 is corrected by the X-axis conveying mechanism 204 and the Y-axis conveying mechanism 205. Then, the first lifting cylinder 302 fully retracts, driving the display screen 700 to descend, and the display screen 700 is lowered to the detection seat 600 for power-on testing.

[0030] like Figure 5 As shown, a detection circuit board is provided inside the detection seat 600, and a groove 601 for placing the display screen 700 is provided on the detection seat 600. The size of the groove 601 is adapted to the size of the display screen 700, and a positioning groove 603 is provided in the groove 601 to cooperate with the display screen FPC701. The size of the positioning groove 603 is adapted to the size of the display screen FPC701, and a probe seat 604 is provided in the positioning groove 603 to cooperate with the FPC gold finger 702. When the FPC gold finger 702 contacts the probe seat 604, the display screen is energized; through the design of the groove 601 and the positioning groove 603, the position of the display screen FPC701 is guaranteed to be accurate, ensuring that the FPC gold finger 702 and the probe seat 604 can be connected and energized.

[0031] Preferably, a plurality of adsorption holes 602 are provided in the groove 601 for adsorbing and fixing the display screen 700, and the detection seat 600 is connected to the external vacuum generator through a vacuum tube; a camera frame 402 is fixedly connected to the top of the support frame 400, and an industrial detection camera 403 and a CCD positioning camera 404 are respectively installed on the camera frame 402. The number of industrial detection cameras 403 can be set to multiple. The industrial detection camera 403 detects items of the display screen 700 including brightness, color, dark lines, bright spots and bad spots, etc. The CCD positioning camera 404 identifies and locates one corner of the display screen 700 and one corner of the groove 601, and fine-tunes the position of the display screen 700 through the X-axis conveying mechanism 204 and the Y-axis conveying mechanism 205 to ensure that the display screen 700 is accurately placed in the groove 601.

[0032] like Figure 6As shown, a pressing mechanism 500 is fixedly installed on the support frame 400, which is used to electrically connect the FPC gold finger 702 and the probe seat 604; the pressing mechanism 500 includes a cylinder frame 501, which is fixedly connected to the support frame 400, and a vertical track plate 502 is fixedly connected below the cylinder frame 501. A second slider 504 is slidably connected to the track plate 502, and a second lifting cylinder for driving the second slider 504 to slide is installed on the cylinder frame 501. 503; The second slider 504 is fixedly connected to a bracket 512, and the bracket 512 is rotatably connected to a rotating rod 506. The end of the rotating rod 506 is connected to a pressure wheel 507. Since the display screen FPC701 is a flexible structure and is prone to wrinkles and bends, the pressure wheel 507 can smooth and straighten the display screen FPC701 to prevent the display screen FPC701 from bending and wrinkling; The second slider 504 is fixedly connected to a slide rod 513, and a moving block 508 is slidably connected to the slide rod 513. The movable block 508 and the rotating rod 506 are hingedly connected with a connecting rod 510, and a cylindrical spring 509 is connected to the surface of the sliding rod 513. The cylindrical spring 509 is arranged between the second slider 504 and the movable block 508; a stopper 511 for limiting the rotating rod 506 is fixedly connected to the bracket 512. When the cylindrical spring 509 is in a natural state, the rotating rod 506 is in an inclined state; the second lifting cylinder 503 drives the second slider 504 to descend. During the descent, the pressure wheel 507 contacts the end of the display screen FPC701 close to the display screen and presses the display screen FPC701 into the positioning groove 603. As the second slider 504 descends, the rotating rod 506 is driven to rotate, driving the pressure wheel 507 to roll along the surface of the display screen FPC701 toward its end position, thereby smoothing and straightening the display screen FPC701 to ensure the accurate position of the display screen FPC701. The pressure wheel 507 stops moving when it rolls to the position close to the FPC gold finger 702.

[0033] like Figure 7As shown, the bracket 512 is fixedly connected to the clamping assembly 505, and the clamping assembly 505 includes a vertically arranged groove rail frame 5051, the groove rail frame 5051 is fixedly connected to the bracket 512, a pressure rod 5053 is movably connected in the groove rail frame 5051, the lower end of the pressure rod 5053 is fixedly connected to the pressure block 5054, and a lifting block 5052 is slidably connected in the groove rail frame 5051, which is used to drive the pressure rod 5053 to move up and down; a driving motor 5059 is installed on the groove rail frame 5051, and a cam 5050 is fixedly installed on the rotating shaft of the driving motor 5059, which is used to drive the lifting block 5052 to descend, and the cam 5050 is set above the lifting block 5052. A first spring 5056 is connected between 052 and the pressure rod 5053; the first spring 5056 plays a role of buffer protection, and the second spring 5058 is connected between the pressure rod 5053 and the bottom of the groove rail frame 5051; the second spring 5058 plays a role of resetting the pressure rod 5053, and drives the cam 5050 to rotate by driving the motor 5059 to squeeze the lifting block 5052, driving the lifting block 5052 to descend, and when the lifting block 5052 descends, it drives the pressure rod 5053 to descend, and the pressure block 5054 is pressed on the FPC gold finger 702, and the FPC gold finger 702 is electrically connected to the probe seat 604 to detect the display screen.

[0034] Preferably, a stopper 5055 that cooperates with the first spring 5056 and the second spring 5058 is provided on the pressure rod 5053, and a spring seat 5057 that cooperates with the first spring 5056 is fixedly connected to the lower surface of the lifting block 5052.

[0035] Working principle: The conveying device 100 conveys the display screen 700 to the bottom of the detection mechanism 200, and the first lifting cylinder 302 drives the adsorption frame 304 to descend, sucks the display screen 700, and then drives the display screen 700 to rise. The flip motor 203 flips the display screen 700 to the top of the detection seat 600. The first lifting cylinder 302 drives the display screen 700 to descend and places the display screen 700 on the detection seat 600. The second lifting cylinder 503 drives the second slider 504 to descend, and the display screen FPC701 is pressed into the positioning groove 603 by the pressure wheel 507. As the second slider 504 descends, the rotating rod 506 rotates, driving the pressure wheel 507 to move along the display screen FPC70 1 rolls the surface toward its end position, thereby smoothing and straightening the display screen FPC 701. The pressure wheel 507 stops moving when it rolls close to the position of the FPC gold finger 702. Then, the driving motor 5059 drives the cam 5050 to rotate, squeezing the lifting block 5052, driving the lifting block 5052 to descend. When the lifting block 5052 descends, the pressure rod 5053 is driven to descend. The pressure block 5054 presses on the FPC gold finger 702. The FPC gold finger 702 is electrically connected to the probe seat 604, and the display screen is automatically tested. After the test is completed, the abnormal display screen 700 is manually removed, and the normal display screen 700 is removed by the adsorption component 300 and placed on the conveying device 100.

[0036] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A detection device for a liquid crystal television display screen, characterized in that: include: A conveying device (100), used for conveying the display screen (700); A detection mechanism (200) is provided above the conveying device (100) and is used to detect the display screen (700) on the conveying device (100); The detection mechanism (200) includes a pair of fixed frames (201), an X-axis conveying mechanism (204) and a Y-axis conveying mechanism (205) are connected between the fixed frames (201), the Y-axis conveying mechanism (205) is connected to the X-axis conveying mechanism (204), and an adsorption component (300) is connected to the Y-axis conveying mechanism (205) for adsorbing the display screen (700); The X-axis conveying mechanism (204) is fixedly connected to a flip seat (202) at both ends, the flip seat (202) is rotatably connected to the fixed frame (201), and a flip motor (203) is installed on the fixed frame (201) for driving the flip seat (202) to rotate; A support frame (400) is fixedly connected between the two fixing frames (201), and the support frame (400) is arranged above the adsorption component (300). A notch (401) is provided on the support frame (400), and a pair of detection seats (600) are symmetrically fixedly connected in the notch (401) for detecting power supply of the display screen (700).

2. The detection device for liquid crystal television display screen according to claim 1, characterized in that: The adsorption assembly (300) includes a connecting frame (301), a first slider (303) is slidably connected to the connecting frame (301), and a first lifting cylinder (302) is installed on the connecting frame (301) for driving the first slider (303) to slide. The first slider (303) is fixedly connected to an adsorption frame (304), and at least two suction nozzles (305) are installed on the adsorption frame (304) for adsorbing the display screen (700).

3. The detection device for liquid crystal television display screen according to claim 2, characterized in that: The detection seat (600) is provided with a groove (601) for placing the display screen (700), a positioning groove (603) matched with the display screen FPC (701) is provided in the groove (601), and a probe seat (604) matched with the FPC gold finger (702) is provided in the positioning groove (603).

4. The detection device for liquid crystal television display screen according to claim 3, characterized in that: A pressing mechanism (500) is fixedly mounted on the support frame (400) for electrically connecting the FPC gold finger (702) and the probe seat (604); the pressing mechanism (500) comprises a cylinder frame (501), a track plate (502) is fixedly connected below the cylinder frame (501), a second slider (504) is slidably connected to the track plate (502), and a second lifting cylinder (503) is mounted on the cylinder frame (501) for driving the second slider (504) to slide.

5. The detection device for liquid crystal television display screen according to claim 4, characterized in that: The second slider (504) is fixedly connected to a bracket (512), the bracket (512) is rotatably connected to a rotating rod (506), and the end of the rotating rod (506) is connected to a pressure wheel (507) for smoothing the display screen FPC (701).

6. The detection device for liquid crystal television display screen according to claim 5, characterized in that: The second slider (504) is fixedly connected to a slide rod (513), the slide rod (513) is slidably connected to a moving block (508), a connecting rod (510) is hinged between the moving block (508) and the rotating rod (506), and a cylindrical spring (509) is connected to the surface of the slide rod (513).

7. The detection device for liquid crystal television display screen according to claim 6, characterized in that: The bracket (512) is fixedly connected to a clamping assembly (505), and the clamping assembly (505) comprises a groove rail frame (5051), a pressure rod (5053) is movably connected in the groove rail frame (5051), a pressure block (5054) is fixedly connected to the lower end of the pressure rod (5053), and a lifting block (5052) is slidably connected in the groove rail frame (5051) for driving the pressure rod (5053) to rise and fall.

8. The detection device for liquid crystal television display screen according to claim 7, characterized in that: A driving motor (5059) is mounted on the groove rail frame (5051). A cam (5050) is fixedly mounted on the rotating shaft of the driving motor (5059) for driving the lifting block (5052) to descend. A first spring (5056) is connected between the lifting block (5052) and the pressure rod (5053); and a second spring (5058) is connected between the pressure rod (5053) and the bottom of the groove rail frame (5051).

9. The detection device for liquid crystal television display screen according to claim 8, characterized in that: The pressure rod (5053) is provided with a stop seat (5055) that is connected to the first spring (5056) and the second spring (5058), and the lower surface of the lifting block (5052) is fixedly connected to a spring seat (5057) that is connected to the first spring (5056).

10. The detection device for liquid crystal television display screen according to claim 9, characterized in that: The groove (601) is provided with a plurality of adsorption holes (602) for adsorbing and fixing the display screen (700); a camera frame (402) is fixedly connected above the support frame (400), and an industrial detection camera (403) and a CCD positioning camera (404) are respectively installed on the camera frame (402).

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