Positioning device for liquid crystal display screen detection

Abstract

The utility model relates to the technical field of positioning devices, and discloses a positioning device for detecting a liquid crystal display screen, which comprises a bottom plate, mounting plates are fixedly connected to the two ends of the left side and the right side of the bottom plate, fixing mechanisms for fixing the liquid crystal display screen are mounted on the mounting plates, and each fixing mechanism comprises a telescopic rod. And one end of the telescopic rod is fixedly connected to the mounting plate. According to the utility model, the liquid crystal display screen to be detected is placed in the limiting grooves at the two sides, and then the extruded springs release elastic force to push the two groups of connecting blocks to move inwards; the two groups of connecting blocks move inwards to drive the two groups of driving connecting rods to rotate inwards to push the two groups of fixing plates to move forwards, so that the limiting grooves tightly fix the liquid crystal display screen to be detected, and the liquid crystal display screen does not need to be fixed by excessively operating a fixing mechanism manually; and the liquid crystal display screen can be prevented from shaking to influence the detection result when the object scanner scans and observes the liquid crystal display screen.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning devices, in particular to a positioning device for detecting a liquid crystal display screen. Background Art

[0002] Liquid crystal display is a type of flat panel display. It is used for screen display of televisions and computers. The advantages of this display are low power consumption, small size and low radiation. The liquid crystal display uses a liquid crystal solution in two polarized materials, so that when the current passes through the liquid, the crystals will be rearranged to achieve the purpose of imaging. During the production process of the liquid crystal display, large scratches may appear on the surface, affecting the appearance of the product. Therefore, surface inspection of the product is required. However, during the use of the inspection device, it is not convenient to fix and limit the LCD screens of different sizes, and to inspect the LCD screens of different sizes, which reduces the detection range of the inspection device.

[0003] In order to solve the above problems, after searching, the prior art disclosed (application number: CN202322946832.X) a detection device for liquid crystal display screens; the article proposes "including a support assembly, a detection platform movably connected above the support assembly, and two groups of clamping mechanisms symmetrically arranged on the upper surface of the detection platform, and both groups of clamping mechanisms are provided with limiting mechanisms; through the cooperation between the clamping mechanism and the limiting mechanism, the position of the clamping plate is adjusted by rotating the screw by a handwheel, thereby facilitating the clamping of liquid crystal display screens of different specifications;".

[0004] However, the clamping mechanism of this comparative case needs to be manually driven to clamp the LCD screen, and cannot be fully positioned to perform scanning and inspection on the LCD screen. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a positioning device for detecting a liquid crystal display screen.

[0006] In order to achieve the above-mentioned object, the present invention adopts the following technical solution: a positioning device for detecting a liquid crystal display screen, comprising a base plate, both ends of the left and right sides of the base plate are fixedly connected to mounting plates, and a fixing mechanism for fixing the liquid crystal display screen is installed on the mounting plates;

[0007] The fixing mechanism includes a telescopic rod, and one end of the telescopic rod is fixedly connected to the mounting plate, the end of the telescopic rod away from the mounting plate is fixedly connected to a connecting block, the connecting block is fixedly connected to a spring for providing driving force to the fixing mechanism, the end of the spring away from the connecting block is fixedly connected to the mounting plate, and the spring is sleeved on the telescopic rod, the connecting block is hinged with a driving connecting rod, the end of the driving connecting rod away from the connecting block is hingedly connected to a fixing plate for clamping a liquid crystal display screen, and the fixing plate is provided with a limiting groove for placing the liquid crystal display screen.

[0008] As a further description of the above technical solution:

[0009] The bottom plate is provided with a first sliding groove, and the first sliding groove guides the movement of the connecting block through a first sliding block sliding inside, and one end of the first sliding block away from the first sliding groove is fixed to the connecting block.

[0010] As a further description of the above technical solution:

[0011] A support rod is fixedly connected to the bottom plate, and one end of the support rod away from the bottom plate is fixedly connected to the top plate, and a connecting plate is fixedly connected to the top plate, and a moving mechanism for driving the detection device to move in multiple directions is installed on the connecting plate. The moving mechanism includes an electric push rod, and the electric push rod is fixedly connected to the connecting plate, two ends of the top plate are provided with a second slider, and the output end of the electric push rod is fixedly connected to a group of second sliders, and at the same time, an active rotating shaft is passed through and rotatably connected to a group of second sliders, one end of the active rotating shaft is fixedly connected to a threaded rod, and the end of the threaded rod away from the electric push rod is rotatably connected to a group of second sliders away from one end of the electric push rod, and a threaded block is threadedly connected through the threaded rod, and an object scanner is fixed on the threaded block.

[0012] As a further description of the above technical solution:

[0013] Second sliding grooves are provided on both sides of the top plate, and the second sliding grooves guide the longitudinal movement of the moving mechanism through a second sliding block sliding inside.

[0014] As a further description of the above technical solution:

[0015] The two groups of the second sliding blocks are fixedly connected with slotted rods, which guide the movement of the object scanner via a threaded block sliding inside the slotted rods, and the object scanner is fixedly connected to one end of the threaded block away from the slotted rods.

[0016] As a further description of the above technical solution:

[0017] The bottom plate is provided with a third sliding groove, and the third sliding groove guides the movement of the fixed plate through a third sliding block sliding inside, and one end of the third sliding block away from the third sliding groove is fixed to the fixed plate.

[0018] As a further description of the above technical solution:

[0019] The bottom of the base plate is fixedly connected with supporting legs for supporting, and four groups of supporting legs are provided.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, the LCD screen to be inspected is placed in the limit grooves on both sides, and then the squeezed springs release the elastic force, pushing the two sets of connecting blocks to move inward. The inward movement of the two sets of connecting blocks drives the two sets of driving connecting rods to rotate inward, pushing the two sets of fixing plates to move forward so that the limit grooves tightly fix the LCD screen to be inspected. Not only does it not require excessive manual operation of the fixing mechanism to fix the LCD screen, but it can also prevent the LCD screen from shaking when the object scanner is scanning and observing the LCD screen, thereby affecting the detection results.

[0022] 2. In the present utility model, by starting the electric push rod, the output end of the electric push rod drives the second slider to move longitudinally, the second slider drives the threaded rod to move longitudinally, and the longitudinal movement of the threaded rod drives the object scanner on the threaded block to perform longitudinal scanning and detection of the LCD screen. At the same time, the rotation of the threaded rod drives the threaded block to move horizontally, and the horizontal movement of the threaded block drives the object scanner to move horizontally, thereby enabling the object scanner to scan and detect the LCD screen in multiple directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 for Figure 4 Enlarged view of point A in the middle;

[0024] Figure 2 This is a schematic diagram of the structure of a positioning device for detecting a liquid crystal display screen proposed in this utility model. Figure 1 ;

[0025] Figure 3 This is a schematic diagram of the structure of a positioning device for detecting a liquid crystal display screen proposed in this utility model. Figure 2 ;

[0026] Figure 4 This is a schematic diagram of the structure of a positioning device for detecting a liquid crystal display screen proposed in this utility model. Figure 3 ;

[0027] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0028] Legend:

[0029] 1. Base plate; 2. Mounting plate; 3. Fixing mechanism; 31. Telescopic rod; 32. Connecting block; 33. Talking spring; 34. Driving connecting rod; 35. Fixing plate; 36. Limiting groove; 37. First slide groove; 38. First slider; 4. Support rod; 5. Top plate; 6. Connecting plate; 7. Moving mechanism; 71. Electric push rod; 72. Second slider; 73. Active rotating shaft; 74. Threaded rod; 75. Threaded block; 76. Object scanner; 77. Second slide groove; 78. Slot rod; 8. Third slide groove; 9. Third slider; 10. Support leg. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 efforts are within the scope of protection of the present invention.

[0031] Example 1: Please refer to Figure 1-5 The present invention provides an embodiment of a positioning device for detecting a liquid crystal display screen, comprising a base plate 1, with mounting plates 2 fixedly connected to both ends of the left and right sides of the base plate 1, and a fixing mechanism 3 for fixing the liquid crystal display screen installed on the mounting plate 2;

[0032] The fixing mechanism 3 includes a telescopic rod 31, and one end of the telescopic rod 31 is fixed to the mounting plate 2, and the end of the telescopic rod 31 away from the mounting plate 2 is fixed to a connecting block 32, and the connecting block 32 is fixed with a spring 33 for providing driving force to the fixing mechanism 3, and the end of the spring 33 away from the connecting block 32 is fixed to the mounting plate 2, and the spring 33 is sleeved on the telescopic rod 31, and a driving connecting rod 34 is hinged on the connecting block 32, and the end of the driving connecting rod 34 away from the connecting block 32 is hinged to a fixing plate 35 for clamping the liquid crystal display screen, and the fixing plate 35 is provided with a limiting groove 36 for placing the liquid crystal display screen.

[0033] Working principle: By placing the LCD screen in the limiting grooves 36 set on the two sets of fixed plates 35, the squeezed spring 33 will release the elastic force outward, pushing the connecting block 32 to move forward, and the connecting block 32 moves forward to drive the connecting rod 34 to rotate outward. The driving connecting rod 34 rotates outward to drive the fixed plate 35 to move inward on the bottom plate 1, so that the limiting grooves 36 tightly clamp the LCD screen, which can prevent the LCD screen from shaking when the object scanner 76 scans and observes the LCD screen, thereby affecting the detection results.

[0034] As a preferred embodiment, a first slide groove 37 is provided on the base plate 1, and the first slide groove 37 guides the movement of the connecting block 32 through the first sliding block 38 sliding inside, and the end of the first sliding block 38 away from the first slide groove 37 is fixed to the connecting block 32.

[0035] like Figure 1-3 As shown, there are two groups of first sliding grooves 37 , which are respectively located at the left and right ends of the bottom plate 1 , and the inner sides of the first sliding grooves 37 are in contact with the outer sides of the first sliding blocks 38 .

[0036] As a preferred embodiment, a support rod 4 is fixed to the base plate 1, and the end of the support rod 4 away from the base plate 1 is fixed to the top plate 5, and the top plate 5 is fixed to a connecting plate 6. A moving mechanism 7 for driving the detection device to move in multiple directions is installed on the connecting plate 6. The moving mechanism 7 includes an electric push rod 71, and the electric push rod 71 is fixed to the connecting plate 6. Second sliders 72 are provided at both ends of the top plate 5, and the output end of the electric push rod 71 is fixed to a group of second sliders 72. At the same time, an active rotating shaft 73 is rotatably connected to a group of second sliders 72. One end of the active rotating shaft 73 is fixed to a threaded rod 74, and the end of the threaded rod 74 away from the electric push rod 71 is rotatably connected to a group of second sliders 72 away from one end of the electric push rod 71. At the same time, a threaded block 75 is threadedly connected to the threaded block 75, and an object scanner 76 is fixed to the threaded block 75.

[0037] like Figure 1 As shown: by starting the electric push rod 71, the output end of the electric push rod 71 drives the second slider 72 to move longitudinally, and the movement of the second slider 72 drives the object scanner 76 on the threaded block 75 to move longitudinally to scan the LCD screens on the two sets of fixed plates 35, and the object scanner 76 is located above the LCD screen. At the same time, the active rotating shaft 73 rotates, and the rotation of the active rotating shaft 73 drives the threaded rod 74 to rotate. The rotation of the threaded rod 74 drives the threaded block 75 to move horizontally. The horizontal movement of the threaded block 75 drives the object scanner 76 to move horizontally, so that the object scanner 76 can scan and detect the LCD screen in multiple directions.

[0038] As a preferred embodiment, second sliding grooves 77 are provided on both sides of the top plate 5 , and the second sliding grooves 77 guide the longitudinal movement of the moving mechanism 7 through the second sliding block 72 sliding inside.

[0039] like Figure 1 As shown, the two groups of second sliding grooves 77 are respectively on the left and right sides of the top plate 5. When the two groups of second sliding blocks 72 move, they slide in the two groups of second sliding grooves 77 respectively.

[0040] As a preferred embodiment, the two sets of second sliders 72 are fixed with slotted rods 78 , which guide the movement of the object scanner 76 through the internally sliding threaded block 75 , and the object scanner 76 is fixed to the end of the threaded block 75 away from the slotted rod 78 .

[0041] like Figure 1 As shown, the slot rod 78 is located directly above the threaded block 75 , and the left and right ends of the slot rod 78 are fixed to the two sets of second sliding blocks 72 respectively.

[0042] As a preferred embodiment, a third slide groove 8 is provided on the base plate 1, and the third slide groove 8 guides the movement of the fixed plate 35 through an internally sliding third slider 9, and the end of the third slider 9 away from the third slide groove 8 is fixed to the fixed plate 35.

[0043] like Figure 3 As shown, the third sliding groove 8 is located in the horizontal center of the bottom plate 1, and the material of the fixing plate 35 is rubber, which can reduce the hardness of clamping the LCD screen.

[0044] As a preferred embodiment, support legs 10 are fixed to the bottom of the base plate 1 for support, and four groups of support legs 10 are provided.

[0045] like Figure 3 As shown: four groups of supporting legs 10 are respectively installed on the four feet at the bottom of the base plate 1.

[0046] Finally, it should be noted that the above is only 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 can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A positioning device for detecting a liquid crystal display screen, comprising a base plate (1), with mounting plates (2) fixedly connected to both ends of the left and right sides of the base plate (1), characterized in that: A fixing mechanism (3) for fixing the liquid crystal display screen is installed on the mounting plate (2); The fixing mechanism (3) includes a telescopic rod (31), and one end of the telescopic rod (31) is fixedly connected to the mounting plate (2); the end of the telescopic rod (31) away from the mounting plate (2) is fixedly connected to a connecting block (32); the connecting block (32) is fixedly connected to a spring (33) for providing a driving force to the fixing mechanism (3); the end of the spring (33) away from the connecting block (32) is fixedly connected to the mounting plate (2); and the spring (33) is sleeved on the telescopic rod (31); a driving connecting rod (34) is hingedly connected to the connecting block (32); the end of the driving connecting rod (34) away from the connecting block (32) is hingedly connected to a fixing plate (35) for clamping a liquid crystal display screen; and the fixing plate (35) is provided with a limiting groove (36) for placing the liquid crystal display screen.

2. A positioning device for detecting a liquid crystal display screen according to claim 1, characterized in that: The bottom plate (1) is provided with a first sliding groove (37), and the first sliding groove (37) guides the movement of the connecting block (32) through a first sliding block (38) sliding inside, and one end of the first sliding block (38) away from the first sliding groove (37) is fixed to the connecting block (32).

3. The positioning device for detecting a liquid crystal display screen according to claim 2, characterized in that: The bottom plate (1) is fixed with a support rod (4), one end of the support rod (4) away from the bottom plate (1) is fixed with a top plate (5), the top plate (5) is fixed with a connecting plate (6), a moving mechanism (7) for driving the detection device to move in multiple directions is installed on the connecting plate (6), the moving mechanism (7) includes an electric push rod (71), and the electric push rod (71) is fixed to the connecting plate (6), and second sliders (72) are provided at both ends of the top plate (5), and the output of the electric push rod (71) is The output end is fixedly connected to a group of second sliders (72), and a driving shaft (73) is rotatably connected to the group of second sliders (72). One end of the driving shaft (73) is fixedly connected to a threaded rod (74), and the end of the threaded rod (74) away from the electric push rod (71) is rotatably connected to a group of second sliders (72) away from one end of the electric push rod (71). At the same time, a threaded block (75) is threadedly connected to the threaded rod (74), and an object scanner (76) is fixed to the threaded block (75).

4. The positioning device for detecting a liquid crystal display screen according to claim 3, wherein: Second sliding grooves (77) are provided on both sides of the top plate (5), and the second sliding grooves (77) guide the longitudinal movement of the moving mechanism (7) through a second sliding block (72) sliding inside.

5. The positioning device for detecting a liquid crystal display screen according to claim 4, characterized in that: The two groups of the second sliders (72) are fixed with slotted rods (78), which guide the movement of the object scanner (76) through the internally sliding threaded block (75), and the object scanner (76) is fixed to the end of the threaded block (75) away from the slotted rod (78).

6. The positioning device for detecting a liquid crystal display screen according to claim 5, characterized in that: The bottom plate (1) is provided with a third sliding groove (8), and the third sliding groove (8) guides the movement of the fixed plate (35) through a third sliding block (9) sliding inside, and one end of the third sliding block (9) away from the third sliding groove (8) is fixed to the fixed plate (35).

7. The positioning device for detecting a liquid crystal display screen according to claim 6, characterized in that: Support legs (10) are fixedly connected to the bottom of the base plate (1) for support, and four groups of support legs (10) are provided.

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