Liquid crystal screen detection equipment with positioning function
By designing a highly adaptable LCD screen testing device, the shortcomings of existing equipment in positioning and adjustment have been solved, enabling precise positioning, color difference detection, and dust removal protection for LCD screens of different sizes, thereby improving the versatility and testing effect of the testing equipment.
Patent Information
- Application Number
- CN202510653279.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-21
- Publication Date
- 2025-10-28
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing LCD screen testing equipment has poor adaptability, especially in terms of positioning and adjustment functions for rectangular LCD screens, making it difficult to adapt to LCD screens of various sizes.
A liquid crystal screen testing device with positioning function was designed, including a frame, a conveyor belt and a positioning and testing mechanism. The device enables the orientation and angle adjustment of liquid crystal screens of different sizes through a limiting mechanism, an adjustment mechanism and a mounting mechanism. Combined with a color difference detector and a dust removal device, it achieves comprehensive testing and protection.
It enables precise positioning and angle adjustment of LCD screens of different sizes, can perform color difference detection and dust removal, and provides protection after detection, thus improving the versatility and detection effect of the detection equipment.
Smart Images
Figure CN120848052A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of liquid crystal screen testing technology, and in particular to a liquid crystal screen testing device with positioning function. Background Technology
[0002] LCD screen testing refers to performing various tests on LCD displays to ensure that their performance meets expectations and that they can be used normally. The testing process includes brightness, color difference, and resolution testing, as well as the detection of some physical defects, such as dead pixels and light leakage. Current testing equipment has poor adaptability, and its positioning and adjustment functions are not perfect for rectangular LCD screens. Based on this, this invention proposes a testing device that can adapt to LCD screens of various sizes, can adjust the orientation and angle, and has strong versatility. Summary of the Invention
[0003] To address the aforementioned technical problems, this invention is adaptable to LCD screens of various sizes, allows for orientation and angle adjustment, and is highly versatile.
[0004] The present invention provides a liquid crystal screen testing device with positioning function, comprising a frame, a positioning and testing mechanism mounted on the frame, and two conveyor belts for transporting liquid crystal screens. An installation mechanism is provided between the two conveyor belts for positioning and installing the liquid crystal screens. The positioning and testing mechanism includes a position mounting plate with limiting mechanisms that adjust their orientation to accommodate liquid crystal screens of various sizes. An adjustment mechanism is also provided on the position mounting plate to adjust the orientation of the limiting mechanisms. The installation mechanism includes a base with a positioning seat for positioning and installing the liquid crystal screens.
[0005] Furthermore, the frame is equipped with a moving belt and a moving motor. The moving motor drives the moving belt, which in turn drives the positioning detection mechanism. The positioning detection mechanism includes a slide block slidably mounted on the frame. The slide block is equipped with a lead screw, a guide rod, and a motor. The motor drives the lead screw. A position slide block is movably mounted on the lead screw and the guide rod, and the position slide block and the lead screw form a helical pair.
[0006] Furthermore, a lifting electric cylinder is provided on the position slide, and the extension rod of the lifting electric cylinder is fixedly connected to the position mounting plate. A fixing plate is provided at the bottom of the position mounting plate, and fixing holes are arrayed on the fixing plate. The fixing holes cooperate with the limiting mechanism to achieve fixation. A mounting seat is provided on the fixing plate, and a color difference detector is provided on the mounting seat.
[0007] Furthermore, the mounting base is equipped with a deflection control electric cylinder. Racks are mounted on the telescopic rods at both ends of the deflection control electric cylinder. Two deflection rods are rotatably mounted on the mounting base. One end of each deflection rod is equipped with a deflection gear that meshes with the rack. One deflection rod is equipped with a pressure-applying electric cylinder, and the telescopic rod of the pressure-applying electric cylinder is equipped with a pressure-applying rod with a mating hole. The other deflection rod is equipped with a dust-removing electric cylinder, and the telescopic rod of the dust-removing electric cylinder is equipped with a dust-removing section for dust removal. A dust-removing box is mounted on the base for overall dust removal. The dust-removing box is equipped with a mating sleeve, and an electromagnetic sliding shaft is mounted on the mating sleeve. The electromagnetic sliding shaft engages with the mating hole on the pressure-applying rod to achieve fixation.
[0008] Furthermore, the limiting mechanism includes a limiting moving seat rotatably mounted on a position mounting plate, a radial electric cylinder is provided on the limiting moving seat, a height electric cylinder is provided on the radial electric cylinder telescopic rod, an angle motor is provided on the height electric cylinder telescopic rod, a limiting frame is provided on the output shaft of the angle motor, an adsorption part is provided on the limiting frame, and a support electric cylinder is provided on the limiting frame, and a support plate is provided on the support electric cylinder telescopic rod.
[0009] Furthermore, the limiting mechanism also includes a fixed sliding shaft slidably disposed inside the limiting moving seat. One end of the fixed sliding shaft is connected to the limiting moving seat by a spring, and the other end of the fixed sliding shaft is provided with a pushing inclined seat. A mating groove is provided on the limiting moving seat, and the mating groove cooperates with the adjustment mechanism to perform orientation adjustment. One end of the fixed sliding shaft cooperates with a fixing hole on the fixing plate to perform fixation.
[0010] Furthermore, the adjustment mechanism includes an angle ring rotatably mounted on a position mounting plate, an orientation adjustment motor mounted on the angle ring, an angle gear mounted on the output shaft of the orientation adjustment motor, the angle gear meshing with the position mounting plate to adjust the angle, an adjustment engagement cylinder mounted on the angle ring, an engagement rod mounted on the telescopic rod of the adjustment engagement cylinder, a push wheel mounted on the engagement rod, the push wheel being used to push the inclined seat, and the engagement rod engaging with the engagement groove on the limiting moving seat to adjust the orientation.
[0011] Furthermore, the installation mechanism includes a positioning motor mounted on the base, a positioning gear plate on the output shaft of the positioning motor, a positioning lead screw rotatably mounted on the base, a connecting gear at one end of the positioning lead screw, the connecting gear meshing with the positioning gear plate, and the positioning seat and the positioning lead screw forming a helical pair.
[0012] Furthermore, the base is provided with a protective mounting bracket for preparing to install protective foam, and the base is also provided with a conversion electric cylinder, and the telescopic rod of the conversion electric cylinder is provided with a conversion sliding plate for lifting and transferring the protective foam.
[0013] The beneficial effects of this invention compared with the prior art are: (1) The limiting mechanism can be adjusted in position according to different sizes of LCD screens; (2) During the test, the pressure can be applied to the surface of the LCD screen by controlling the pressure-applying rod through the pressure-applying electric cylinder, and the color difference detector can detect the color difference on the surface of the LCD screen after the pressure is applied; (3) After the test is completed, the LCD screen can be protected, that is, protective foam is prepared to be installed in the protective mounting frame. The protective foam can be lifted by controlling the movement of the switching slide plate through the switching electric cylinder. The angle of the limiting frame can be adjusted by the angle motor so that the protective foam is located inside the limiting frame. The protective foam can be adsorbed and fixed by the adsorption part. Then, it can be supported by the support plate. The position of the limiting frame can be adjusted so that the protective foam can be placed on the four corners of the LCD screen. Then, the LCD screen is transferred to the second conveyor belt for transmission. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention.
[0015] Figure 2 This is a schematic diagram of the mounting structure of the position slide of the present invention.
[0016] Figure 3 This is a schematic diagram of the mounting disk structure of the present invention.
[0017] Figure 4 This is a schematic diagram of the bottom structure of the mounting plate of the present invention.
[0018] Figure 5 This is a schematic diagram of the limiting and moving seat structure of the present invention.
[0019] Figure 6 This is a schematic diagram of the fixed sliding shaft structure of the present invention.
[0020] Figure 7 This is a schematic diagram of the mounting structure of the height-adjustable electric cylinder of the present invention.
[0021] Figure 8 This is a schematic diagram of the installation structure of the limiting frame of the present invention.
[0022] Figure 9 This is a schematic diagram of the base mounting structure of the present invention.
[0023] Figure 10 This is a schematic diagram of the mounting base structure of the present invention.
[0024] Figure 11 This is a schematic diagram of the deflection rod connection structure of the present invention.
[0025] Attached reference numerals: 1-Frame; 2-Moving belt; 3-Moving motor; 4-Transmission belt one; 5-Transmission belt two; 6-Lifting cylinder; 7-Slide; 8-Lead screw one; 9-Guide rod one; 10-Motor one; 11-Position slide; 12-Lifting cylinder; 13-Position mounting plate; 14-Orientation adjustment motor; 15-Angle gear; 16-Adjusting and mating cylinder; 17-Angle ring; 18-Fixed plate; 19-Color difference detector; 20-Limiting moving seat; 21-Radial cylinder; 22-Height cylinder; 23-Fixed sliding shaft; 24-Spring one; 25-Pushing inclined seat; 26-Matching rod; 27-Push wheel; 28-Angle motor; 29-Limit frame; 30-Adsorption part; 31-Support electric cylinder; 32-Support plate; 33-Protective mounting frame; 34-Conversion electric cylinder; 35-Conversion slide plate; 36-Base; 37-Positioning seat; 38-Positioning screw; 39-Connecting gear; 40-Positioning gear plate; 41-Positioning motor; 42-Dust collection box; 43-Matching sleeve; 44-Mounting seat; 45-Deflection rod; 46-Deflection gear; 47-Pressure matching electric cylinder; 48-Pressure matching rod; 49-Dust collection electric cylinder; 50-Dust collection part; 51-Deflection control electric cylinder; 52-Rack. Detailed Implementation
[0026] Example: Figures 1 to 11 As shown, a liquid crystal display (LCD) screen testing device with positioning function includes a frame 1, on which a positioning and testing mechanism is provided, and also includes a first conveyor belt 4 and a second conveyor belt 5 for transporting LCD screens; an installation mechanism is provided between the first conveyor belt 4 and the second conveyor belt 5 for positioning and installing the LCD screen; the positioning and testing mechanism includes a position mounting plate 13, on which a limiting mechanism is provided, and the limiting mechanism is oriented on the position mounting plate 13 to accommodate LCD screens of various sizes; an adjustment mechanism is provided on the position mounting plate 13 for adjusting the orientation of each limiting mechanism; the installation mechanism includes a base 36, on which a positioning seat 37 is provided for positioning and installing the LCD screen.
[0027] A movable belt 2 and a movable motor 3 are mounted on the frame 1. The movable motor 3 drives the movable belt 2, which in turn drives the positioning detection mechanism. The positioning detection mechanism includes a slide block 7 slidably mounted on the frame 1. A lead screw 8, a guide rod 9, and a motor 10 are mounted on the slide block 7. The motor 10 drives the lead screw 8. A position slide block 11 is movably mounted on the lead screw 8 and guide rod 9, forming a helical pair with the lead screw 8. A lifting electric cylinder 12 is mounted on the position slide block 11. The extension rod of the lifting electric cylinder 12 is fixedly connected to a position mounting plate 13. A fixing plate 18 is located at the bottom of the position mounting plate 13. Fixing holes are arrayed on the fixing plate 18, and these holes cooperate with a limiting mechanism to achieve fixation. A mounting base 44 is mounted on the fixing plate 18, and a color difference detector 19 is mounted on the mounting base 44. A deflection control electric cylinder 51 is installed on the base 44. Racks 52 are installed on the telescopic rods at both ends of the deflection control electric cylinder 51. Two deflection rods 45 are rotatably mounted on the base 44. A deflection gear 46 is installed at one end of each deflection rod 45, meshing with the racks 52. A pressure-applying electric cylinder 47 is installed on one of the deflection rods 45. A pressure-applying rod 48 is installed on the telescopic rod of the pressure-applying electric cylinder 47, and a mating hole is provided on the pressure-applying rod 48. A dust-removing electric cylinder 49 is installed on the other deflection rod 45. A dust-removing part 50 is installed on the telescopic rod of the dust-removing electric cylinder 49 for dust removal. A dust-removing box 42 is installed on the base 36 for overall dust removal. A mating sleeve 43 is installed on the dust-removing box 42, and an electromagnetic sliding shaft is installed on the mating sleeve 43. The electromagnetic sliding shaft mates with the mating hole on the pressure-applying rod 48 to achieve fixation.
[0028] The limiting mechanism includes a limiting movable seat 20 rotatably mounted on a positioning mounting plate 13. A radial electric cylinder 21 is mounted on the limiting movable seat 20. A height electric cylinder 22 is mounted on the extension rod of the radial electric cylinder 21. An angle motor 28 is mounted on the extension rod of the height electric cylinder 22. A limiting frame 29 is mounted on the output shaft of the angle motor 28. An adsorption part 30 is mounted on the limiting frame 29, and a support electric cylinder 31 is mounted on the limiting frame 29. A support plate 32 is mounted on the extension rod of the support electric cylinder 31. The limiting mechanism also includes a fixed sliding shaft 23 slidably disposed inside the limiting movable seat 20. A spring 24 is connected between one end of the fixed sliding shaft 23 and the limiting movable seat 20. A push inclined seat 25 is mounted on the other end of the fixed sliding shaft 23. The upper part has a mating groove, which mates with the adjustment mechanism for orientation adjustment. One end of the fixed sliding shaft 23 mates with the fixing hole on the fixed plate 18 for fixation. The adjustment mechanism includes an angle ring 17 rotatably mounted on the position mounting plate 13. An orientation adjustment motor 14 is mounted on the angle ring 17. An angle gear 15 is mounted on the output shaft of the orientation adjustment motor 14. The angle gear 15 meshes with the position mounting plate 13 for angle adjustment. An adjustment mating electric cylinder 16 is mounted on the angle ring 17. A mating rod 26 is mounted on the telescopic rod of the adjustment mating electric cylinder 16. A push wheel 27 is mounted on the mating rod 26. The push wheel 27 is used to push the push inclined seat 25. The mating rod 26 mates with the mating groove on the limit moving seat 20 for orientation adjustment.
[0029] The installation mechanism includes a positioning motor 41 mounted on a base 36, a positioning gear 40 mounted on the output shaft of the positioning motor 41, a positioning screw 38 rotatably mounted on the base 36, a connecting gear 39 mounted at one end of the positioning screw 38, the connecting gear 39 meshing with the positioning gear 40, and a positioning seat 37 and the positioning screw 38 forming a helical pair; a protective mounting bracket 33 is mounted on the base 36 for preparing to install protective foam, and a conversion electric cylinder 34 is also mounted on the base 36, with a conversion sliding plate 35 mounted on the telescopic rod of the conversion electric cylinder 34 for lifting and transferring the protective foam.
[0030] The operating principle is as follows: Conveyor belt 4 is used to transport untested LCD screens. Lifting cylinders 6 are installed on both sides of conveyor belt 4. At a preset position, the lifting cylinders 6 lift the LCD screen. Further, the sliding block 7 moves via the moving belt 2, and the LCD screen is clamped and transferred by a limiting mechanism. Specifically, the limiting mechanism is oriented adjustable. The orientation can be adjusted according to different sizes of LCD screens, i.e., by the operation of the orientation adjustment motor 14, under gear transmission, the angle ring 17 rotates, and the adjusting and cooperating cylinder 16 controls the movement of the cooperating rod 26. The cooperating rod 26 and the limiting displacement... The moving seat 20 is fitted with a groove, and the push wheel 27 pushes the inclined seat 25, which moves the inclined seat 25 and the fixed slide shaft 23. One end of the fixed slide shaft 23 disengages from the fixed hole on the fixed plate 18, thereby driving the limiting moving seat 20 to adjust its orientation. Then, the radial position of the height cylinder 22 is controlled by the radial electric cylinder 21, the height cylinder 22 controls the height of the limiting frame 29, and the angle motor 28 controls the angle of the limiting frame 29. This allows for the positioning and clamping of rectangular LCD screens of different sizes. Furthermore, the support plate 32 can be supported by the support cylinder 31.
[0031] The LCD screen is transferred onto the positioning seat 37. The positioning motor 41 operates, causing the positioning gear 40 to rotate, which in turn causes the positioning seat 37 to slide, achieving positioning and installation. The color difference detector 19 can detect color differences and other issues with the LCD screen. Furthermore, before testing, the LCD screen can be dusted. This is achieved by controlling the movement of the rack 52 via the deflection control cylinder 51, causing the deflection rod 45 to deflect. The dust removal section 50 is positioned above the LCD screen, and its movement is controlled by the dust removal cylinder 49. The dust removal section 50 performs localized dust removal. A deflection rod 45 deflects, meaning the pressure-applying mating rod 48 is positioned above the LCD screen. The pressure-applying mating rod 48 can engage with the mating sleeve 43 on the dust collection box 42. The electromagnetic sliding shaft on the mating sleeve 43 engages with the mating hole on the pressure-applying mating rod 48 to achieve fixation, thereby driving the dust collection box 42 to perform overall dust removal on the LCD screen. During testing, the pressure-applying mating rod 48 can also be controlled by the pressure-applying mating electric cylinder 47 to apply a preset pressure to the surface of the LCD screen, and the color difference detector 19 performs color difference detection on the surface of the LCD screen after the pressure is applied.
[0032] After the inspection is completed, the LCD screen can be protected. Protective foam is prepared and installed in the protective mounting frame 33. The protective foam can be lifted by controlling the movement of the conversion slide plate 35 through the conversion cylinder 34. The angle of the limit frame 29 can be adjusted by the angle motor 28 so that the protective foam is located inside the limit frame 29. The protective foam can be adsorbed and fixed by the adsorption part 30. Then, it is supported by the support plate 32. The position of the limit frame 29 can be adjusted so that the protective foam can be placed on the four corners of the LCD screen. Then, the LCD screen is transferred to the conveyor belt 5 for transmission.
Claims
1. A liquid crystal screen testing device with positioning function, comprising a frame (1), a positioning testing mechanism disposed on the frame (1), and further comprising a first conveyor belt (4) and a second conveyor belt (5) for transporting liquid crystal screens; an installation mechanism is disposed between the first conveyor belt (4) and the second conveyor belt (5) for positioning and installing liquid crystal screens; characterized in that: The positioning and detection mechanism includes a position mounting plate (13), on which a limiting mechanism is provided. The limiting mechanism is adjusted on the position mounting plate (13) to accommodate LCD screens of various sizes. An adjustment mechanism is provided on the position mounting plate (13) to adjust the orientation of each limiting mechanism. The installation mechanism includes a base (36), on which a positioning seat (37) is provided for positioning and installing the LCD screen.
2. The LCD screen detection device with positioning function according to claim 1, characterized in that: The frame (1) is provided with a moving belt (2) and a moving motor (3). The moving motor (3) is used to drive the moving belt (2). The moving belt (2) is used to drive the positioning detection mechanism. The positioning detection mechanism includes a slide (7) that is slidably mounted on the frame (1). The slide (7) is provided with a lead screw (8), a guide rod (9) and a motor (10). The motor (10) is used to drive the lead screw (8). A position slide (11) is movably mounted on the lead screw (8) and the guide rod (9). The position slide (11) and the lead screw (8) form a screw pair.
3. The LCD screen detection device with positioning function according to claim 2, characterized in that: The position slide (11) is provided with a lifting electric cylinder (12), the extension rod of the lifting electric cylinder (12) is fixedly connected to the position mounting plate (13), a fixing plate (18) is provided at the bottom of the position mounting plate (13), and a fixing hole is arrayed on the fixing plate (18). The fixing hole cooperates with the limiting mechanism to achieve fixation; a mounting seat (44) is provided on the fixing plate (18), and a color difference detector (19) is provided on the mounting seat (44).
4. The LCD screen detection device with positioning function according to claim 3, characterized in that: A deflection control electric cylinder (51) is provided on the mounting base (44). A rack (52) is provided on the telescopic rods at both ends of the deflection control electric cylinder (51). Two deflection rods (45) are rotatably mounted on the mounting base (44). A deflection gear (46) is provided at one end of the deflection rod (45). The deflection gear (46) meshes with the rack (52). A pressure-applying electric cylinder (47) is provided on one of the deflection rods (45). A pressure-applying rod is provided on the telescopic rod of the pressure-applying electric cylinder (47). 48) A mating hole is provided on the pressure fitting rod (48), and a dust removal electric cylinder (49) is provided on another deflection rod (45). A dust removal part (50) is provided on the telescopic rod of the dust removal electric cylinder (49) for dust removal. A dust removal box (42) is installed on the base (36) for overall dust removal. A mating sleeve (43) is provided on the dust removal box (42), and an electromagnetic sliding shaft is provided on the mating sleeve (43). The electromagnetic sliding shaft is mated with the mating hole on the pressure fitting rod (48) to achieve fixation.
5. The LCD screen detection device with positioning function according to claim 1, characterized in that: The limiting mechanism includes a limiting moving seat (20) rotatably mounted on a position mounting plate (13), a radial electric cylinder (21) is provided on the limiting moving seat (20), a height electric cylinder (22) is provided on the telescopic rod of the radial electric cylinder (21), an angle motor (28) is provided on the telescopic rod of the height electric cylinder (22), a limiting frame (29) is provided on the output shaft of the angle motor (28), an adsorption part (30) is provided on the limiting frame (29), and a support electric cylinder (31) is provided on the limiting frame (29), and a support plate (32) is provided on the telescopic rod of the support electric cylinder (31).
6. A liquid crystal screen detection device with positioning function according to claim 5, characterized in that: The limiting mechanism also includes a fixed sliding shaft (23) that is slidably disposed inside the limiting moving seat (20). One end of the fixed sliding shaft (23) is connected to the limiting moving seat (20) by a spring (24). The other end of the fixed sliding shaft (23) is provided with a push inclined seat (25). A matching groove is provided on the limiting moving seat (20). The matching groove cooperates with the adjustment mechanism to perform orientation adjustment. One end of the fixed sliding shaft (23) cooperates with the fixing hole on the fixing plate (18) to perform fixation.
7. A liquid crystal screen detection device with positioning function according to claim 6, characterized in that: The adjustment mechanism includes an angle ring (17) rotatably mounted on a position mounting plate (13), an orientation adjustment motor (14) is provided on the angle ring (17), an angle gear (15) is provided on the output shaft of the orientation adjustment motor (14), the angle gear (15) meshes with the position mounting plate (13) to perform angle adjustment, an adjustment and engagement electric cylinder (16) is provided on the angle ring (17), an engagement rod (26) is provided on the telescopic rod of the adjustment and engagement electric cylinder (16), a push wheel (27) is provided on the engagement rod (26), the push wheel (27) is used to push the push inclined seat (25), and the engagement rod (26) engages with the engagement groove on the limit moving seat (20) to perform orientation adjustment.
8. A liquid crystal screen detection device with positioning function according to claim 1, characterized in that: The installation mechanism includes a positioning motor (41) mounted on a base (36), a positioning gear (40) mounted on the output shaft of the positioning motor (41), a positioning screw (38) rotatably mounted on the base (36), a connecting gear (39) mounted at one end of the positioning screw (38), the connecting gear (39) meshing with the positioning gear (40), and the positioning seat (37) and the positioning screw (38) forming a helical pair.
9. A liquid crystal screen detection device with positioning function according to claim 8, characterized in that: The base (36) is provided with a protective mounting bracket (33) for preparing to install protective foam. The base (36) is also provided with a conversion electric cylinder (34). The telescopic rod of the conversion electric cylinder (34) is provided with a conversion sliding plate (35) for lifting and transferring the protective foam.