Intelligent device for testing performance of display backlight module

Abstract

The invention belongs to the technical field of backlight module testing, and particularly discloses a display backlight module performance testing intelligent device which comprises a main supporting frame, fixing feet are arranged at the two ends of the main supporting frame, a reciprocating testing mechanism is arranged below the main supporting frame, and an adjustable module fixing mechanism is arranged above the main supporting frame. The reciprocating testing mechanism comprises an alternate testing movable frame and a double-layer propelling assembly, the alternate testing movable frame is arranged on the lower side of the main supporting frame, the two sides of the alternate testing movable frame are arranged on the inner side wall of the main supporting frame respectively, and the double-layer propelling assembly is arranged in the middle of the lower wall of the main supporting frame and located in the alternate testing movable frame. The two ends of the backlight module are fixed to the adjusting rollers, the adjusting rollers rotate freely in the fixing grooves, bending performance testing in different directions is achieved by extruding and stretching the two ends of the backlight module, and meanwhile damage to the ends of the backlight module due to changes of the radian of a curved surface is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of backlight module testing, and specifically refers to an intelligent device for testing the performance of a display backlight module. Background Art

[0002] The backlight module is one of the key components of the LCD panel. Its function is to supply sufficient brightness and evenly distributed light source so that it can display images normally. The backlight module is mainly composed of a light source, a light guide plate, an optical module, and structural parts. In order to improve the reflection effect of light, LCD screens usually adopt a curved screen structure. During the manufacturing process of the curved backlight module, the backlight module needs to be subjected to a certain degree of extrusion test to test the bending performance of the backlight module. During the performance test, the following problems often occur: 1. It is difficult to stably clamp and position the curved backlight module during the test to adapt to the different curvature changes inside and outside the curved backlight module; 2. During the extrusion test of the backlight module, as the bending of the backlight module changes, it is difficult for the general fixing mechanism to automatically adapt to the dynamic change of the angle of the end of the backlight module when clamping the end of the backlight module, which can easily cause damage to the backlight module.

[0003] Therefore, a display backlight module performance test intelligent device is needed to solve the above problems. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an intelligent device for testing the performance of a display backlight module, in which the two ends of the backlight module are fixed on an adjusting roller, and the adjusting roller can rotate arbitrarily in a fixed groove. The bending performance in different directions can be tested by squeezing and stretching the two ends of the backlight module, while avoiding damage to the end of the backlight module due to changes in the curvature of the curved surface.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes an intelligent device for testing the performance of a display backlight module, comprising a main support frame, fixed feet are arranged at both ends of the main support frame, a reciprocating test mechanism is arranged below the main support frame, and an adjustable module fixing mechanism is arranged above the main support frame; The reciprocating test mechanism includes an alternating test movable frame and a double-layer propulsion assembly, wherein the alternating test movable frame is arranged at the lower side of the main support frame, and the two sides of the alternating test movable frame are respectively arranged at the inner side wall of the main support frame, and the double-layer propulsion assembly is arranged at the middle part of the lower wall of the main support frame, and the double-layer propulsion assembly is located in the alternating test movable frame; The adjustable module fixing mechanism includes an angle adjustment component, a clamping component, an amplitude adjustment component and a backlight module. The amplitude adjustment component is symmetrically arranged on the alternating test movable frame, the angle adjustment component is arranged on the amplitude adjustment component, the clamping component is symmetrically arranged on the angle adjustment component, and both ends of the backlight module are respectively fixed on the clamping components.

[0006] Furthermore, the alternating test activity frame includes a supporting cross bar, a swing arm, a connecting block, a limit rod, a short shaft and a linkage plate. The supporting cross bars are arranged in pairs, and the two ends of the supporting cross bars are respectively provided with swing arms for horizontal rotation. The ends of two adjacent swing arms are connected together through a connecting block, and the swing arm is horizontally rotationally connected to the connecting block. One end of the limit rod is fixed to the inner wall of the main support frame, and the limit rod passes through the side wall of the connecting block. The short shaft is arranged in the middle of the lower wall of the connecting block, and the middle of the upper wall of the linkage plate is arranged at the lower end of the short shaft.

[0007] Furthermore, the double-layer propulsion assembly includes a transmission motor, an upper push rod, a lower push rod and a rotating shaft. The transmission motor is fixedly arranged in the middle of the lower wall of the main support frame, and the rotating shaft is connected to the output shaft of the transmission motor. The upper push rod and the lower push rod are arranged on the rotating shaft, and the upper push rod is parallel to the lower push rod.

[0008] Furthermore, the amplitude adjustment assembly includes a moving leg, a sliding hoop, an adjusting threaded rod and a moving cross bar, the moving leg is arranged in an L shape, the moving leg is symmetrically arranged on the outer side wall of the supporting cross bar, the sliding hoop is slidably arranged on the horizontal section of the moving leg, and the moving cross bar connects the two sliding hoops together.

[0009] Furthermore, the angle adjustment assembly includes a fixed groove body, an adjusting roller, a connecting sleeve and a connecting rod, the fixed groove body is an arc-shaped hollow groove, the central angle of the cross section of the fixed groove body is greater than 180 degrees, the fixed groove body is arranged on the movable cross bar, the adjusting roller is rotatably arranged in the fixed groove body, the connecting sleeve is penetrated through the side wall of the main support frame, one end of the connecting rod is arranged on the outer wall of the fixed groove body, and the other end of the connecting rod is slidably arranged in the connecting sleeve.

[0010] Furthermore, the clamping assembly includes two clamping plates, which are arranged in pairs on the outer wall of the adjusting roller, and the two ends of the two clamping plates are butt-jointed together by locking screws.

[0011] Furthermore, the end of the backlight module is clamped between the two clamping plates by means of locking screws.

[0012] Furthermore, the upper push rod is aligned with the supporting cross bar in the horizontal direction, and the lower push rod is aligned with the linkage plate in the horizontal direction.

[0013] Furthermore, a moving wheel is provided at the lower end of the moving leg.

[0014] Furthermore, a laser rangefinder is provided in the middle of the upper wall of the main support frame.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows: 1. The rotating shaft drives the upper push rod and the lower push rod to rotate. When the end of the upper push rod contacts the supporting horizontal bar, the upper push rod pushes the supporting horizontal bar, the moving horizontal bar, the fixed slot and the adjusting roller to move outward. The adjusting roller pulls the two ends of the backlight module outward to flatten the curved backlight module, and test the elasticity of the flattening of the backlight module. 2. The rotating shaft drives the upper push rod and the lower push rod to continue to rotate, the lower push rod contacts the linkage plate, the lower push rod pushes the linkage plate, the short shaft and the connecting block outward, the connecting block drives the swing arm to swing, the angle between the two swing arms decreases, the two swing arms drive the two supporting horizontal bars to move toward each other, the two supporting horizontal bars drive the two moving horizontal bars to move toward each other, and then drive the two fixed slots and the two adjusting rollers to move toward each other, the adjusting roller drives the clamping plates on both sides to move toward each other, and then drives the two ends of the backlight module to move toward each other, so as to realize the bending test of the backlight module; 3. Both ends of the backlight module assembly are fixed on the outer wall of the adjusting roller, and the adjusting roller can rotate arbitrarily in the fixed groove body, which can avoid damage to the ends of the backlight module during the stretching and squeezing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a display backlight module performance test intelligent device proposed by the present invention; Figure 2 for Figure 1 The main view; Figure 3 It is a schematic diagram of the three-dimensional structure of the alternating test activity frame; Figure 4 for Figure 3 Top view; Figure 5 It is a schematic diagram of the three-dimensional structure of the double-layer propulsion assembly; Figure 6 for Figure 2 Enlarged view of part A; Figure 7 for Figure 3 Enlarged view of part B.

[0017] Among them, 1. main support frame, 2. fixed foot, 3. reciprocating test mechanism, 4. adjustable module fixing mechanism, 5. alternating test movable frame, 6. double-layer propulsion assembly, 7. angle adjustment assembly, 8. clamping assembly, 9. backlight module, 10. support cross bar, 11. swing arm, 12. connecting block, 13. limit rod, 14. short shaft, 15. linkage plate, 16. transmission motor, 17. upper push rod, 18. lower push rod, 19. rotating shaft, 20. fixed trough, 21. adjusting roller, 22. connecting sleeve, 23. connecting rod, 24. splint, 25. locking screw, 26. moving leg, 27. moving wheel, 28. laser rangefinder, 29. amplitude adjustment assembly, 30. sliding hoop, 31. adjusting threaded rod, 32. moving cross bar.

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0019] 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; 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.

[0020] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0021] like Figure 1 As shown, the present invention proposes an intelligent device for testing the performance of a display backlight module, comprising a main support frame 1, fixed feet 2 are arranged at both ends of the main support frame 1, a reciprocating testing mechanism 3 is arranged below the main support frame 1, and an adjustable module fixing mechanism 4 is arranged above the main support frame 1; The reciprocating test mechanism 3 includes an alternating test movable frame 5 and a double-layer propulsion assembly 6, wherein the alternating test movable frame 5 is arranged at the lower side of the main support frame 1, and the two sides of the alternating test movable frame 5 are respectively arranged at the inner side wall of the main support frame 1, and the double-layer propulsion assembly 6 is arranged at the middle part of the lower wall of the main support frame 1, and the double-layer propulsion assembly 6 is located in the alternating test movable frame 5; The adjustable module fixing mechanism 4 includes an angle adjustment component 7, a clamping component 8, an amplitude adjustment component 29 and a backlight module 9. The amplitude adjustment component 29 is symmetrically arranged on the alternating test movable frame 5, the angle adjustment component 7 is arranged on the amplitude adjustment component 29, the clamping component 8 is symmetrically arranged on the angle adjustment component 7, and the two ends of the backlight module 9 are respectively fixed on the clamping component 8.

[0022] like Figure 1 , Figure 3 , Figure 4 , Figure 7 As shown, the alternating test activity frame 5 includes a supporting cross bar 10, a swing arm 11, a connecting block 12, a limiting rod 13, a short shaft 14 and a linkage plate 15. The supporting cross bars 10 are arranged in pairs, and the two ends of the supporting cross bars 10 are respectively provided with swing arms 11 for horizontal rotation. The ends of two adjacent swing arms 11 are connected together by a connecting block 12. The swing arm 11 is horizontally rotationally connected to the connecting block 12. One end of the limiting rod 13 is fixedly provided on the inner side wall of the main support frame 1, and the limiting rod 13 passes through the side wall of the connecting block 12. The short shaft 14 is provided in the middle of the lower wall of the connecting block 12, and the middle of the upper wall of the linkage plate 15 is provided at the lower end of the short shaft 14.

[0023] like Figure 1 , Figure 5 As shown, the double-layer propulsion assembly 6 includes a transmission motor 16, an upper push rod 17, a lower push rod 18 and a rotating shaft 19. The transmission motor 16 is fixedly arranged in the middle of the lower wall of the main support frame 1, and the rotating shaft 19 is connected to the output shaft of the transmission motor 16. The upper push rod 17 and the lower push rod 18 are arranged on the rotating shaft 19, and the upper push rod 17 is parallel to the lower push rod 18.

[0024] like Figure 1 , Figure 3 , Figure 4 As shown, the amplitude adjustment assembly 29 includes a moving leg 26, a sliding hoop 30, an adjusting threaded rod 31 and a moving cross bar 32. The moving leg 26 is arranged in an L shape. The moving leg 26 is symmetrically arranged on the outer wall of the supporting cross bar 10. The sliding hoop 30 is slidably arranged on the horizontal section of the moving leg 26. The moving cross bar 32 connects the two sliding hoops 30 together.

[0025] like Figure 1 , Figure 2 , Figure 6As shown, the angle adjustment assembly 7 includes a fixed groove body 20, an adjusting roller 21, a connecting sleeve 22 and a connecting rod 23. The fixed groove body 20 is an arc-shaped hollow groove. The central angle of the cross section of the fixed groove body 20 is greater than 180 degrees, which can ensure that the adjusting roller 21 will not slip out of the fixed groove body 20. The fixed groove body 20 is arranged on the movable cross bar 32, and the adjusting roller 21 is rotatably arranged in the fixed groove body 20. The connecting sleeve 22 passes through the side wall of the main support frame 1, and one end of the connecting rod 23 is arranged on the outer wall of the fixed groove body 20, and the other end of the connecting rod 23 is slidably arranged in the connecting sleeve 22.

[0026] like Figure 1 , Figure 2 , Figure 6 As shown, the clamping assembly 8 includes two clamping plates 24 , which are arranged in pairs on the outer wall of the adjusting roller 21 , and the two ends of the two clamping plates 24 are butt-jointed together by locking screws 25 .

[0027] like Figure 2 , Figure 6 As shown, the end of the backlight module 9 is clamped between the two clamping plates 24 by means of locking screws 25 .

[0028] like Figure 1 , Figure 2 As shown, the upper push rod 17 is aligned with the supporting cross bar 10 in the horizontal direction, and the lower push rod 18 is aligned with the linkage plate 15 in the horizontal direction.

[0029] like Figure 1 , Figure 3 As shown, a moving wheel 27 is provided at the lower end of the moving leg 26 to improve the stability of the device.

[0030] like Figure 2 As shown, a laser rangefinder 28 is provided in the middle of the upper wall of the main support frame 1.

[0031] When in use, the main support frame 1 is fixed by the fixed foot 2, and the adjusting threaded rods 31 on both sides are rotated. The adjusting threaded rods 31 drive the moving crossbar 32 to move, and the moving crossbar 32 drives the fixed slot body 20 to move, and the fixed slot body 20 drives the adjusting roller 21 to move, so that the distance between the adjusting rollers 21 is adapted to the distance between the two ends of the backlight module 9, the locking screw 25 is loosened, and the end of the backlight module 9 is inserted between the two clamping plates 24, and then the locking screw 25 is tightened, so that the two ends of the backlight module 9 are fixed on the outer wall of the adjusting roller 21, and the laser rangefinder 28 is turned on to measure the distance between the main support frame 1 and the backlight module 9 at this time, and the transmission motor 16 is turned on, and the transmission motor 16 drives the rotating shaft 19 to rotate, and the rotating shaft 19 drives the upper push rod 17 and the lower push rod 18 to rotate. When the end of the upper push rod 17 contacts the supporting cross bar 10, the upper push rod 17 pushes the supporting cross bar 10 to move outward, the supporting cross bar 10 drives the moving leg 26 to move, the moving leg 26 drives the fixed slot body 20 to move outward, the fixed slot body 20 drives the adjusting roller 21 to move outward, the adjusting roller 21 pulls the two ends of the backlight module 9 outward, flattens the curved backlight module 9, tests the elasticity of the flattening of the backlight module 9, observes whether the backlight module 9 has a crease, and uses the laser rangefinder 28 to measure the distance between the main support frame 1 and the backlight module 9 at this time to determine whether the backlight module 9 forms a permanent deformation. At this time, the supporting cross bar 10 pulls the swing arm 11, and the supporting cross bar 10 drives the connecting block 12 to move inward along the limit rod 13. During this process, the lower push rod 18 does not contact the linkage plate 15; When the transmission motor 16 drives the rotating shaft 19 to continue to rotate, the rotating shaft 19 drives the upper push rod 17 and the lower push rod 18 to continue to rotate, and the end of the upper push rod 17 is separated from the supporting cross bar 10. Under the action of the resilience of the backlight module 9, the two adjusting rollers 21 and the fixed slot body 20 on both sides move toward each other, and the rotating shaft 19 drives the upper push rod 17 and the lower push rod 18 to continue to rotate. The lower push rod 18 contacts the linkage plate 15, and the lower push rod 18 pushes the linkage plate 15 outward. The linkage plate 15 drives the short shaft 14 to move outward, and the short shaft 14 drives the connecting block 12 to move outward. The connecting block 12 drives the swing arm 11 to swing, and the angle between the two swing arms 11 decreases. The two swing arms 11 drive the two supporting cross bars 1 0 move toward each other, the two supporting horizontal bars 10 drive the two fixed slots 20 and the two adjusting rollers 21 to move toward each other, the adjusting rollers 21 drive the clamping plates 24 on both sides to move toward each other, and then drive the two ends of the backlight module 9 to move toward each other, so as to realize the bending test of the backlight module 9. When the transmission motor 16 drives the rotating shaft 19 to continue to rotate, the lower push rod 18 is separated from the linkage plate 15. Under the action of the elastic force of the backlight module 9, the two groups of adjusting rollers 21 and the fixed slots 20 drive the two ends of the backlight module 9 to move in the opposite direction, and observe whether the backlight module 9 has creases. Then, the laser rangefinder 28 is used to measure the distance between the main support frame 1 and the backlight module 9 to determine whether the backlight module 9 forms a permanent deformation. When the transmission motor 16 drives the rotating shaft 19 to rotate periodically, the backlight module 9 can be tested multiple times.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the invention.

[0034] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A display backlight module performance test intelligent device, comprising a main support frame (1), with fixed feet (2) at both ends of the main support frame (1), characterized in that: A reciprocating testing mechanism (3) is provided below the main support frame (1), and an adjustable module fixing mechanism (4) is provided above the main support frame (1); The reciprocating test mechanism (3) comprises an alternating test movable frame (5) and a double-layer propulsion assembly (6), wherein the alternating test movable frame (5) is arranged at the lower side of the main support frame (1), and the two sides of the alternating test movable frame (5) are respectively arranged at the inner side wall of the main support frame (1), and the double-layer propulsion assembly (6) is arranged at the middle part of the lower wall of the main support frame (1), and the double-layer propulsion assembly (6) is located in the alternating test movable frame (5); The adjustable module fixing mechanism (4) comprises an angle adjustment component (7), a clamping component (8), an amplitude adjustment component (29) and a backlight module (9); the amplitude adjustment component (29) is symmetrically arranged on the alternating test movable frame (5); the angle adjustment component (7) is arranged on the amplitude adjustment component (29); the clamping component (8) is symmetrically arranged on the angle adjustment component (7); and two ends of the backlight module (9) are respectively fixed on the clamping component (8).

2. The display backlight module performance test intelligent device according to claim 1, characterized in that: The alternating test movable frame (5) comprises a supporting crossbar (10), a swing arm (11), a connecting block (12), a limiting rod (13), a short shaft (14) and a linkage plate (15). The supporting crossbar (10) is arranged in pairs. The two ends of the supporting crossbar (10) are respectively provided with swing arms (11) for horizontal rotation. The ends of two adjacent swing arms (11) are connected together through a connecting block (12). The swing arm (11) is connected to the connecting block (12) for horizontal rotation. One end of the limiting rod (13) is fixedly arranged on the inner side wall of the main support frame (1). The limiting rod (13) passes through the side wall of the connecting block (12). The short shaft (14) is arranged in the middle of the lower wall of the connecting block (12). The middle of the upper wall of the linkage plate (15) is arranged at the lower end of the short shaft (14).

3. The display backlight module performance test intelligent device according to claim 2, characterized in that: The double-layer propulsion assembly (6) comprises a transmission motor (16), an upper push rod (17), a lower push rod (18) and a rotating shaft (19); the transmission motor (16) is fixedly arranged at the middle part of the lower wall of the main support frame (1); the rotating shaft (19) is connected to the output shaft of the transmission motor (16); the upper push rod (17) and the lower push rod (18) are arranged on the rotating shaft (19); and the upper push rod (17) is parallel to the lower push rod (18).

4. The display backlight module performance test intelligent device according to claim 3, characterized in that: The amplitude adjustment component (29) comprises a movable leg (26), a sliding hoop (30), an adjustment threaded rod (31) and a movable cross bar (32); the movable leg (26) is arranged in an L shape; the movable leg (26) is symmetrically arranged on the outer side wall of the supporting cross bar (10); the sliding hoop (30) is slidably arranged on the horizontal section of the movable leg (26); and the movable cross bar (32) connects the two sliding hoops (30) together.

5. The display backlight module performance test intelligent device according to claim 4, characterized in that: The angle adjustment assembly (7) comprises a fixed groove body (20), an adjustment roller (21), a connecting sleeve (22) and a connecting rod (23); the fixed groove body (20) is an arc-shaped hollow groove; the central angle of a cross section of the fixed groove body (20) is greater than 180 degrees; the fixed groove body (20) is arranged on a movable horizontal bar (32); the adjustment roller (21) is rotatably arranged in the fixed groove body (20); the connecting sleeve (22) penetrates a side wall of the main support frame (1); one end of the connecting rod (23) is arranged on an outer wall of the fixed groove body (20); and the other end of the connecting rod (23) is slidably arranged in the connecting sleeve (22).

6. The display backlight module performance test intelligent device according to claim 5, characterized in that: The clamping assembly (8) comprises two clamping plates (24), the two clamping plates (24) being arranged in pairs on the outer wall of the adjusting roller (21), and the two ends of the two clamping plates (24) being butt-jointed together via locking screws (25).

7. The display backlight module performance test intelligent device according to claim 6, characterized in that: The end of the backlight module (9) is clamped between the two clamping plates (24) via a locking screw (25).

8. The intelligent device for testing the performance of a display backlight module according to claim 7, characterized in that: The upper push rod (17) is aligned with the supporting cross bar (10) in the horizontal direction, and the lower push rod (18) is aligned with the linkage plate (15) in the horizontal direction.

9. The intelligent device for testing the performance of a display backlight module according to claim 8, characterized in that: A laser rangefinder (28) is provided in the middle of the upper wall of the main support frame (1).

10. The intelligent device for testing the performance of a display backlight module according to claim 9, characterized in that: A moving wheel (27) is provided at the lower end of the moving leg (26).

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