A LCD screen color abnormality detection jig

Abstract

The present invention relates to the technical field of color abnormality detection of liquid crystal screens, specifically to a color abnormality detection jig for liquid crystal screens, comprising two groups of symmetrically arranged reversing components for changing the angle of a detection source to detect a liquid crystal screen, the reversing component comprising a circular plate rotatably connected to the inner wall of a protective shell, a collar rotatably connected to the surface of the circular plate, a bent rod fixedly mounted on the outer surface of the collar, one end of the bent rod penetrating through the interior of an arc groove and extending into an outer cover, a bent plate snap-fitted on the surface of the bent rod, an outer extrusion groove and an inner extrusion groove are provided on one side of the bent plate close to the outer cover, and the inner walls of the outer extrusion groove and the inner extrusion groove are both slidably connected to a first rack and a second rack through a sliding rod. The present invention enables a liquid crystal screen to be fully detected at different degrees of bending through the coordinated use of various components, thereby ensuring the accuracy of the detection results.

Description

Technical Field

[0001] The present invention relates to the technical field of color abnormality detection for liquid crystal screens, and in particular to a color abnormality detection jig for liquid crystal screens. Background Art

[0002] During the production and transportation process, LCD screens may bend due to external forces, which in turn affects their color rendering performance and the user's visual experience. Therefore, LCD screens need to be quality inspected before they are sold.

[0003] However, when inspecting LCD screens, existing inspection jigs cannot adjust the degree of curvature of the LCD screen during the inspection process, and cannot change the inspection angle during the inspection process. As a result, when the LCD screen is bent, the reflection and refraction of light on the screen surface will change, and shadows or reflections will easily appear. These phenomena will cover up or interfere with the display of defects on the LCD screen, making the defects difficult to detect, affecting the comprehensiveness and accuracy of the inspection. Summary of the invention

[0004] The purpose of the present invention is to provide a liquid crystal screen color abnormality inspection jig to solve the problem that the detection source in the prior art proposed in the above background technology cannot change the detection angle, resulting in that when the liquid crystal screen is bent, the light reflection and refraction changes of the detection source are easy to cause shadows and reflections, covering up or interfering with the defect display, and affecting the comprehensiveness and accuracy of the detection.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a liquid crystal screen color display abnormality inspection jig, comprising a detection body and an outer cover fixedly installed on the upper surface of the detection body, the surface of the detection body is provided with a placement opening, the inner wall of the placement opening is movably connected with a fixing plate, and protective shells are fixedly installed on both sides of the outer cover, and also includes: arc grooves and sliding grooves are symmetrically penetrated through the left and right sides of the outer cover, a driving motor is fixedly installed on one side of the outer cover, the output shaft of the driving motor is coaxially connected with a screw rod, the screw rod is arranged inside the outer cover and is rotatably connected with the inner wall of the outer cover, the surface of the screw rod is meshedly connected with a moving plate, and the inner wall of the moving plate is rotatably connected with a detection source through a rotating shaft;

[0006] It also includes two groups of symmetrically arranged switching components for changing the angle of the detection source to detect the liquid crystal screen, the switching component includes a circular plate rotatably connected to the inner wall of the protective shell, the surface of the circular plate is rotatably connected to a ring, the outer surface of the ring is fixedly installed with a bent rod, one end of the bent rod penetrates the interior of the arc groove and extends into the outer cover, the surface of the bent rod is snap-fitted with a bent plate, the side of the bent plate close to the outer cover is provided with an outer extrusion groove and an inner extrusion groove, the inner walls of the outer extrusion groove and the inner extrusion groove are slidably connected to a first rack and a second rack through a sliding rod.

[0007] Furthermore, both ends of the rotating shaft are arranged inside the slide groove, and gears are fixedly installed on both ends of the rotating shaft, and the gears are arranged between the outer cover and the protective shell.

[0008] Furthermore, a notch is provided on the surface of the circular plate, and an inner wall of the notch is elastically connected with a ratchet through a torsion spring.

[0009] Furthermore, the inner wall of the collar is provided with a plurality of slots equidistantly arranged thereon, and the slots are engaged with the ratchets in one-way manner, a connecting rod is fixedly mounted on the surface of the collar, and the lower end of the connecting rod penetrates through the strip groove arranged on the surface of the detection body and extends into the interior of the detection body.

[0010] Furthermore, an elastic clamping strip is fixedly installed on the inner wall of the bent plate, the bent plate is in a C-shaped structure, and the bent plate is fixedly connected to the movable plate via a retractable vertical rod.

[0011] Furthermore, the outer extrusion groove is formed by a combination of a group of first guide grooves, a first straight groove and a first oblique groove, and the inner extrusion groove is formed by a combination of two groups of second guide grooves, a second straight groove and a second oblique groove.

[0012] Furthermore, the length of the second rack is half of the first rack, and the second rack is aligned with the right end of the first rack. The second rack and the first rack are slidably matched with the surface of the outer cover and are elastically connected to the inner wall of the protective shell through a connecting spring.

[0013] Furthermore, it also includes two groups of symmetrically arranged lifting components for lifting the LCD screen, the lifting components include two groups of symmetrically arranged telescopic rods, and the telescopic rods are movably connected to the lower ends of the connecting rods, the two groups of telescopic rods are rotatably installed with round rods on opposite surfaces, and the ends of the round rods away from each other are slidingly matched with the inner wall of the detection body, the middle part of the round rod is unidirectionally connected with a driving plate, the driving plate is meshingly connected with a driven belt, and the driven belt is rotatably connected to the inner wall of the detection body, a plurality of lifting blocks are equidistantly installed on the surface of the driven belt, the surface of the lifting block is extruded with a matching block, and the matching block is slidably matched with the inner wall of the detection body, and the upper end of the matching block is fixedly installed with a lift rod.

[0014] Furthermore, each group of the lifting blocks is composed of three groups of trapezoidal blocks of different heights, and the three groups of trapezoidal blocks are equidistantly distributed.

[0015] Furthermore, the upper end of the top rod is a semicircular structure, and the upper end of the top rod is in contact with the lower surface of the liquid crystal screen.

[0016] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0017] 1. The present invention provides a bent rod, a first rack, a second rack and other components that cooperate with each other. When the driving motor drives the gears installed at both ends of the detection source to move through the screw and reset, the bent rod is clamped by the bent plate and pushed to move inside the arc groove, so that the bent rod starts to drive the circular plate to rotate clockwise under the cooperation of the clamping groove and the ratchet. Under the action of the inner extrusion groove, the second rack rises and meshes with the gear in the resetting process, so that the gear drives the detection source to start rotating and tilting to the left, thereby changing the detection angle of the LCD screen, and then starts to detect the LCD screen at the changed angle. When the detection source is reset again, the first rack starts to descend and meshes with the gear under the action of the outer extrusion groove, so that the detection source starts to rotate in the opposite direction and tilt to the right, and the LCD screen is inspected again, thereby realizing multi-angle detection of the LCD screen and ensuring the comprehensiveness and accuracy of the detection results.

[0018] 2. The present invention provides components such as a telescopic rod, a lifting block and a push rod that cooperate with each other. When the detection source changes the irradiation angle multiple times and returns to its original state, the repeatedly rotating ring will drive the connecting rod to rotate synchronously, and drive the telescopic rod to start moving laterally on the inner wall of the detection body, and start driving the driving plate to push the driven belt to rotate, so that the lifting block starts to squeeze the matching block to drive the push rod to move upward, and starts squeezing the LCD screen, causing the LCD screen to bend, and cooperate with the detection source that changes the angle, so that different bending degrees of the LCD screen can be fully detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the separation of the protective shell and the outer cover structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the internal structure of the outer cover of the present invention;

[0023] Figure 4 It is a schematic diagram of the separation of the switching component structure of the present invention;

[0024] Figure 5 for Figure 3 A schematic diagram of the structure enlargement in the middle;

[0025] Figure 6 It is a schematic diagram of the planar structure of the outer extrusion groove and the inner extrusion groove of the present invention;

[0026] Figure 7 for Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0027] Figure 8 This is a schematic diagram of the position distribution of the first rack and the second rack of the present invention;

[0028] Fig. 9 It is a schematic diagram of the overall structure of the jacking assembly of the present invention;

[0029] Fig.10 for Fig. 9 Enlarged schematic diagram of the structure at point C in the middle.

[0030] In the figure: 1. detection body; 101. placement port; 102. fixing plate; 2. outer cover; 201. protective shell; 202. arc groove; 203. slide groove; 3. driving motor; 301. screw rod; 302. moving plate; 303. detection source; 304. gear; 4. reversing assembly; 401. round plate; 4011. ratchet; 402. collar; 4021. slot; 4022. connecting rod; 403. bent rod; 404. bent plate; 405. elastic clamping strip; 406. outer extrusion groove; 407. inner extrusion groove; 408. first rack; 409. second rack; 5. lifting assembly; 501. telescopic rod; 502. round rod; 503. driving plate; 504. driven belt; 505. lifting block; 506. matching block; 507. ejector rod. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] The present invention will be further described below in conjunction with the embodiments.

[0033] Embodiment: A fixture for detecting abnormal color display of a liquid crystal screen, such as Figure 1-Figure 10As shown, it includes a detection body 1 and an outer cover 2 fixedly installed on the upper surface of the detection body 1. The surface of the detection body 1 is provided with a placement opening 101 for placing the liquid crystal display screen to be detected; it is worth noting that the liquid crystal display screen can be a display screen with bending characteristics such as a flexible liquid crystal screen; the inner wall of the placement opening 101 is movably connected with a fixing plate 102 for fixing the liquid crystal display that has been placed inside the placement opening 101; protective shells 201 are fixedly installed on both the left and right sides of the outer cover 2, which can play a protective and dustproof role;

[0034] Among them, arc grooves 202 and slide grooves 203 are symmetrically opened on the left and right sides of the outer cover 2, and the arc grooves 202 and slide grooves 203 can play a guiding and limiting role; a driving motor 3 is fixedly installed on one side of the outer cover 2, which can provide a power source for the mobile detection LCD screen; the output shaft of the driving motor 3 is coaxially connected with a screw rod 301, which is arranged inside the outer cover 2 and is rotatably connected to the inner wall of the outer cover 2, and can be synchronously rotated with the driving motor 3 by setting the screw rod 301;

[0035] Among them, the surface of the screw rod 301 is meshingly connected with a moving plate 302, and by setting the moving plate 302, it can reciprocate under the action of the screw rod 301; the inner wall of the moving plate 302 is connected to the detection source 303 through the rotation of the rotating shaft, and by setting the detection source 303, it can move synchronously with the arc groove 202 to realize the movement detection of the LCD screen; both ends of the rotating shaft are arranged inside the slide groove 203, and both ends of the rotating shaft are fixedly installed with gears 304, and the gear 304 is arranged between the outer cover 2 and the protective shell 201, and by setting the gear 304, it can move inside the slide groove 203 following the detection source 303.

[0036] Combined with Figure 1 -Attached Figure 8 , and also includes two groups of symmetrically arranged reversing components 4 for changing the angle of the detection source 303 to detect the liquid crystal screen, which can change the irradiation angle of the detection source 303 for multiple times, so that the liquid crystal screen can be detected at multiple angles, ensuring the comprehensiveness and accuracy of the detection results; the reversing component 4 includes a circular plate 401 rotatably connected to the inner wall of the protective shell 201, and a recess is provided on the surface of the circular plate 401, which can play a role in storage; the inner wall of the recess is elastically connected with a ratchet 4011 through a torsion spring, and the ratchet 4011 can play a role in clamping; it is worth noting that the torsion spring is not shown in the figure due to the viewing angle, and it is located between the ratchet 4011 and the inner wall of the recess, and is fixedly connected to the inner wall of the recess and one side of the ratchet 4011;

[0037] The surface of the circular plate 401 is rotatably connected with a collar 402, and the inner wall of the collar 402 is provided with a plurality of groups of slots 4021 at equal intervals, and the slots 4021 are unidirectionally engaged with the ratchet teeth 4011, and the collar 402 can drive the circular plate 401 to rotate clockwise, but cannot rotate counterclockwise through the unidirectional engagement of the slots 4021 and the ratchet teeth 4011; a connecting rod 4022 is fixedly installed on the surface of the collar 402, and the lower end of the connecting rod 4022 penetrates through the strip groove provided on the surface of the detection body 1 and It extends to the inside of the detection body 1, and by setting a connecting rod 4022, it can play a role of connection and driving; a bent rod 403 is fixedly installed on the outer surface of the ring 402, one end of the bent rod 403 penetrates the inside of the arc groove 202 and extends to the outer cover 2, and by setting the bent rod 403, it can slide inside the arc groove 202 and drive the ring 402 to rotate; it is worth noting that when the bent rod 403 slides from one end of the arc groove 202 to the other end, the angle changes by 120 degrees.

[0038] Among them, the surface of the bent rod 403 is snap-fitted with a bent plate 404, and the bent plate 404 is a C-shaped structure. The bent plate 404 is fixedly connected to the movable plate 302 through a retractable vertical rod, and an elastic clamping strip 405 is fixedly installed on the inner wall of the bent plate 404. By setting the bent plate 404 and the elastic clamping strip 405, when the movable plate 302 is reset, the bent rod 403 can be snap-fitted and driven to move inside the arc groove 202; it is worth noting that when the movable plate 302 is reset, the bent rod 403 will be driven to move from one end of the arc groove 202 to the other end through the bent plate 404, and when the movable plate 302 moves horizontally again, the bent rod 403 will be driven to return to its original position through the bent plate 404.

[0039] Among them, the side of the bent plate 404 close to the outer cover 2 is provided with an outer extrusion groove 406 and an inner extrusion groove 407, and by setting the outer extrusion groove 406 and the inner extrusion groove 407, the functions of guiding, limiting and extruding can be achieved; it is worth noting that the outer extrusion groove 406 is far away from the center of the circular plate 401, and the inner extrusion groove 407 is close to the center of the circular plate 401; the outer extrusion groove 406 is composed of a group of first guide grooves, a first straight groove and a first oblique groove connected and combined, and the inner extrusion groove 407 is composed of two groups of second guide grooves, a second straight groove and a second oblique groove connected and combined; it is worth noting that in combination with the attached Figure 4 , the angle between the two sets of second skew grooves is 120 degrees measured in a clockwise direction.

[0040] Among them, the inner walls of the outer extrusion groove 406 and the inner extrusion groove 407 are slidably connected with the first rack 408 and the second rack 409 through a sliding rod. The length of the second rack 409 is half of the first rack 408, and the second rack 409 is aligned with the right end of the first rack 408. By setting the first rack 408 and the second rack 409, it can be meshed with the gear 304, so that the gear 304 can drive the detection source 303 to rotate and change the detection angle; it is worth noting that the length of the first rack 408 is twice that of the second rack 409, so as to reset the detection source 303 that is deflected in the initial state and deflect it in the reverse direction. , so that the detection source 303 can detect the LCD screen at multiple angles; and after the detection source 303 is deflected, it will not be reset due to gravity factors; the second rack 409 and the first rack 408 are slidably matched with the surface of the outer cover 2, and are elastically connected to the inner wall of the protective shell 201 through a connecting spring. By setting a connecting spring, when the circular plate 401 rotates, the first rack 408 and the second rack 409 are driven to intermittently move through the outer extrusion groove 406 and the inner extrusion groove 407, and the connecting spring is stretched, so that the connecting spring generates a reaction force to drive the first rack 408 and the second rack 409 to reset.

[0041] Combined with Figure 1 -Attached Fig.10 , and also includes two groups of symmetrically arranged lifting components 5 for lifting the LCD screen, so that the detection source 303 can lift the LCD screen during the detection process, so that the LCD screen is bent, so as to achieve all-round detection; the lifting component 5 includes two groups of symmetrically arranged telescopic rods 501, and the telescopic rods 501 are movably connected to the lower end of the connecting rod 4022. By setting the telescopic rods 501, when the connecting rod 4022 rotates with the ring 402, the telescopic rods 501 will be driven to rotate synchronously; the two groups of telescopic rods 501 are rotatably installed with round rods 502 on the opposite surfaces, and the ends of the round rods 502 that are away from each other are slidably matched with the inner wall of the detection body 1. By setting the round rods 502, when the telescopic rods 501 rotate, the round rods 502 are pushed to move laterally inside the detection body 1;

[0042] Among them, the middle part of the round rod 502 is connected to the driving plate 503 for unidirectional rotation. By setting the driving plate 503, it can move synchronously with the round rod 502. It is worth noting that the unidirectional rotation of the driving plate 503 is achieved through existing technologies, such as the cooperation between the ratchet pawls, and the driving plate 503 can only rotate clockwise to a certain angle, which can be set according to needs.

[0043] The driving plate 503 is meshedly connected with a driven belt 504, and the driven belt 504 is rotationally connected to the inner wall of the detection body 1. By setting the driven belt 504, when the round rod 502 moves laterally following the telescopic rod 501, the driven belt 504 will be pushed to rotate through the driving plate 503, and when the telescopic rod 501 drives the round rod 502 to reset, the driving plate 503 will rotate without driving the driven belt 504 to rotate in the opposite direction; a plurality of groups of lifting blocks 505 are equidistantly installed on the surface of the driven belt 504, each group of lifting blocks 505 is composed of three groups of trapezoidal blocks of different heights, and the three groups of trapezoidal blocks are equidistantly distributed, and the bending angle of the screen can be changed by setting the lifting blocks 505;

[0044] Among them, the surface of the lifting block 505 is extruded and matched with the matching block 506, and the matching block 506 is slidably matched with the inner wall of the detection body 1. By setting the matching block 506, it can move upward under the extrusion of the lifting block 505; a push rod 507 is fixedly installed on the upper end of the matching block 506, and the upper end of the push rod 507 is a semicircular structure, and the upper end of the push rod 507 is in contact with the lower surface of the LCD screen. By setting the push rod 507, it can move upward synchronously with the matching block 506, lift up the LCD screen, and make it bend, so as to facilitate comprehensive detection.

[0045] Specifically, when testing the LCD screen, the LCD screen to be tested is first placed inside the placement port 101, the fixing plate 102 is lowered to fix the LCD screen, and then the driving motor 3 is started, and the moving plate 302 equipped with the detection source 303 is driven by the screw rod 301 to start reciprocating movement to test the LCD screen; when the screw rod 301 drives the moving plate 302 to start lateral movement, the bent rod 403 at the end of the arc groove 202 is driven to move synchronously through the bent plate 404, and when the bent rod 403 moves to the head end of the arc groove 202, the bent plate 404 is separated from the bent rod 403, and continues to move lateral with the moving plate 302;

[0046] When the lead screw 301 starts to drive the moving plate 302 to reset, the bent plate 404 will be clamped with the bent rod 403 again and drive the bent rod 403 to move to the end of the arc groove 202, thereby driving the collar 402 and the circular plate 401 to rotate 120 degrees. During the rotation of the circular plate 401, one of the two groups of second inclined grooves in the inner extrusion groove 407 will begin to squeeze the sliding rod fixedly connected to the second rack 409, so that the second rack 409 will move upward and begin to mesh with the gear 304, so that the detection source 303 can rotate and move to the left during the reset process. Tilt (the left side is deflected in the direction of the fixed plate 102, and the right side is deflected in the direction of the drive motor 3), and when the movable plate 302 is completely reset, the slide bar will immediately enter the second straight groove connected to it from one of the second inclined grooves, and enter the second guide groove connected to the second straight groove, and then the drive motor 3 starts to drive the left-tilted detection source 303 to start reciprocating movement through the lead screw 301 to detect the LCD screen, and drives the bent rod 403 to move to the head end of the arc groove 202 again through the bent plate 404, and drives the ring 402 to rotate counterclockwise alone;

[0047] When the detection source 303 tilted to the left starts to reset, the bent plate 404 will drive the bent rod 403 to move to the end of the arc groove 202 again, and drive the circular plate 401 and the ring 402 to start rotating clockwise through the bent rod 403, so that the first inclined groove starts to squeeze the sliding rod fixedly connected to the first rack 408, so that the second rack 409 starts to move downward and meshes with the gear 304, so that the detection source 303 starts to reset and tilt to the right during the reset process, and then follows the lead screw 301 to detect the LCD screen; and when the detection source 303 tilted to the right resets, another set of second inclined grooves will drive the second rack 409 to rise again and mesh with the gear 304, so that the detection source 303 returns to the initial state, that is, perpendicular to the LCD screen;

[0048] When the detection source 303 moves back and forth several times and finally returns to the initial state, the telescopic rod 501 will be driven to rotate through the connecting rod 4022, so that the telescopic rod 501 pushes the round rod 502 to drive the driving plate 503 to start pushing the driven belt 504 to rotate, so that any group of trapezoidal blocks in the lifting block 505 begins to squeeze with the matching block 506, so that the matching block 506 moves upward, and then drives the top rod 507 to rise, so that the LCD screen begins to bend, and the initial steps are repeated again, thereby realizing all-round detection of LCD screens with different degrees of bending, and ensuring the accuracy of the detection results.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A liquid crystal screen color abnormality inspection jig, comprising a detection body (1) and an outer cover (2) fixedly mounted on the upper surface of the detection body (1), wherein a placement opening (101) is provided on the surface of the detection body (1), a fixing plate (102) is movably connected to the inner wall of the placement opening (101), and protective shells (201) are fixedly mounted on both left and right sides of the outer cover (2), characterized in that: Also includes: The outer cover (2) has arc-shaped grooves (202) and sliding grooves (203) symmetrically formed on the left and right sides thereof, a driving motor (3) is fixedly mounted on one side of the outer cover (2), an output shaft of the driving motor (3) is coaxially connected to a screw rod (301), the screw rod (301) is arranged inside the outer cover (2) and is rotatably connected to the inner wall of the outer cover (2), a movable plate (302) is meshedly connected to the surface of the screw rod (301), and the inner wall of the movable plate (302) is rotatably connected to a detection source (303) via a rotating shaft; The invention also comprises two groups of symmetrically arranged reversing components (4) for changing the angle of the detection source (303) for detecting the liquid crystal screen. The reversing components (4) comprise a circular plate (401) rotatably connected to the inner wall of the protective shell (201). A collar (402) is rotatably connected to the surface of the circular plate (401). A bent rod (403) is fixedly mounted on the outer surface of the collar (402). One end of the bent rod (403) penetrates through the interior of the arc groove (202) and extends into the outer cover (2). A bent plate (404) is snap-fitted on the surface of the bent rod (403). An outer extrusion groove (406) and an inner extrusion groove (407) are formed on one side of the bent plate (404) close to the outer cover (2). The inner walls of the outer extrusion groove (406) and the inner extrusion groove (407) are slidably connected to a first rack (408) and a second rack (409) via a sliding rod.

2. The LCD screen color abnormality inspection jig according to claim 1, characterized in that: Both ends of the rotating shaft are arranged inside the slide groove (203), and gears (304) are fixedly mounted on both ends of the rotating shaft, and the gears (304) are arranged between the outer cover (2) and the protective shell (201).

3. The LCD screen color abnormality inspection tool according to claim 1, characterized in that: A notch is provided on the surface of the circular plate (401), and the inner wall of the notch is elastically connected to a ratchet (4011) via a torsion spring.

4. The LCD screen color abnormality inspection tool according to claim 3, characterized in that: The inner wall of the collar (402) is provided with a plurality of groups of slots (4021) at equal intervals, and the slots (4021) are engaged with the ratchet teeth (4011) in a one-way manner. A connecting rod (4022) is fixedly mounted on the surface of the collar (402), and the lower end of the connecting rod (4022) penetrates a strip-shaped slot provided on the surface of the detection body (1) and extends into the interior of the detection body (1).

5. The LCD screen color abnormality inspection jig according to claim 1, characterized in that: An elastic clamping strip (405) is fixedly mounted on the inner wall of the bent plate (404); the bent plate (404) is in a C-shaped structure; the bent plate (404) is fixedly connected to the movable plate (302) via a retractable vertical rod.

6. The LCD screen color abnormality inspection jig according to claim 1, characterized in that: The outer extrusion groove (406) is formed by a combination of a group of first guide grooves, a first straight groove and a first oblique groove, and the inner extrusion groove (407) is formed by a combination of two groups of second guide grooves, a second straight groove and a second oblique groove.

7. The LCD screen color abnormality inspection jig according to claim 1, characterized in that: The length of the second rack (409) is half that of the first rack (408), and the second rack (409) is aligned with the right end of the first rack (408). The second rack (409) and the first rack (408) are slidably matched with the surface of the outer cover (2), and are elastically connected to the inner wall of the protective shell (201) via a connecting spring.

8. The LCD screen color abnormality inspection jig according to claim 1, characterized in that: The device also comprises two groups of symmetrically arranged lifting assemblies (5) for lifting up the liquid crystal screen, wherein the lifting assemblies (5) comprise two groups of symmetrically arranged telescopic rods (501), and the telescopic rods (501) are movably connected to the lower ends of the connecting rods (4022), and round rods (502) are rotatably mounted on opposite surfaces of the two groups of telescopic rods (501), and the ends of the round rods (502) that are away from each other are slidably matched with the inner wall of the detection body (1), and the middle part of the round rods (502) is unidirectionally rotatably connected to a driving mechanism. The driving plate (503) is meshedly connected with a driven belt (504), and the driven belt (504) is rotatably connected to the inner wall of the detection body (1), and a plurality of groups of lifting blocks (505) are equidistantly installed on the surface of the driven belt (504), and a matching block (506) is extruded and matched on the surface of the lifting block (505), and the matching block (506) is slidably matched with the inner wall of the detection body (1), and a top rod (507) is fixedly installed on the upper end of the matching block (506).

9. The LCD screen color abnormality inspection jig according to claim 8, characterized in that: Each group of the lifting blocks (505) is composed of three groups of trapezoidal blocks of different heights, and the three groups of trapezoidal blocks are equidistantly distributed.

10. The LCD screen color abnormality inspection jig according to claim 8, characterized in that: The upper end of the top rod (507) is a semicircular structure, and the upper end of the top rod (507) is in contact with the lower surface of the liquid crystal screen.

Images