Display screen detection device

Abstract

The invention relates to the technical field of display detection, in particular to a display screen detection device which comprises a frame, a rotating disc is movably arranged on a bottom plate of the frame, a plurality of clamping mechanisms used for clamping a display screen are arranged on the rotating disc, a detection mechanism is movably arranged on a top plate of the frame, and the detection mechanism is used for detecting the display screen located on the rotating disc. The detection mechanism is driven by the lifting mechanism to move up and down relative to the display screen on the turntable; and the detection mechanism comprises a fixed seat, a detection head is movably arranged on the fixed seat, the detection head can slide and swing relative to the fixed seat, and the detection head can detect different positions relative to the display screen on the rotary disc in cooperation with the rotatable rotary disc. Different positions of the display screen can be adjusted by manually rotating the turntable, and the angle of the detection head can be adjusted by sliding the detection head to different positions on the fixed seat and holding the detection head by hand to swing, so that different positions of the display screen on the turntable can be detected.

Description

Technical Field

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

[0002] The Chinese invention patent with patent announcement number CN118050924A discloses an LCD liquid crystal display screen detection device, including a bottom plate, a fixed plate is arranged on the bottom plate, a sliding groove is provided on the fixed plate, a sliding plate is slidably arranged in the sliding groove, a placement plate is arranged on one side of the fixed plate, a storage groove is provided in the placement plate, an inclined groove is provided on the sliding plate, a moving rod is movably arranged in the inclined groove, a pressing plate is fixedly arranged on the side of the moving rod away from the fixed plate, a fixing frame is arranged on one side of the placement plate, a moving groove is provided on the fixing frame, the pressing plate is slidably connected to the moving groove, and a groove is provided in the center of the moving groove. The defect of this prior art is that it can only detect a single position of the display screen, and cannot detect other positions.

[0003] Therefore, there is still room for improvement in the prior art. Summary of the invention

[0004] In order to solve the problems of the prior art, the present invention proposes a display screen detection device, which can detect different positions of the display screen on the turntable under the cooperation of a movable turntable and a movable detection head.

[0005] In order to achieve the above object, the technical solution applied by the present invention is as follows:

[0006] A display screen detection device comprises a frame, a turntable is movably provided on the bottom plate of the frame, a plurality of clamping mechanisms for clamping the display screen are provided on the turntable, a detection mechanism is movably provided on the top plate of the frame, the detection mechanism is used to detect the display screen located on the turntable; the detection mechanism is driven by a lifting mechanism to move up and down relative to the display screen located on the turntable; the detection mechanism comprises a fixed seat, a detection head is movably provided on the fixed seat, the detection head can slide and swing relative to the fixed seat, and cooperate with the rotatable turntable, so that the detection head can detect different positions relative to the display screen located on the turntable.

[0007] According to the above solution, the turntable can be rotated and tilted relative to the bottom plate of the frame, thereby causing the display screen on the turntable to change position relative to the detection mechanism.

[0008] According to the above scheme, a guide rail is formed on the fixed seat, and a suspension rod is slidingly arranged in the guide rail. The suspension rod is driven to slide in the guide rail by a rotating rod. The first end of the rotating rod is located in the guide rail and is threadedly connected to the upper end of the suspension rod. The second end of the rotating rod passes through the guide rail and is exposed outside, and the lower end of the suspension rod passes through the guide rail and is hinged to the detection head.

[0009] According to the above scheme, the lower end of the suspension rod is hinged with a rotating seat through a connecting pin, a diverter hood is fixed on the rotating seat, the bottom plate of the diverter hood is fixedly connected to the detection head, an arc-shaped guide rod is fixed to the lower part of the suspension rod, the arc-shaped guide rod is slidably connected to the diverter hood, an inner cavity is formed in the diverter hood, the inner cavity is connected to an air pump through an air pipe, and a plurality of inclined jet holes are provided on the bottom plate of the diverter hood, and the jet holes are arranged corresponding to the detection end of the detection head.

[0010] According to the above solution, the lifting mechanism includes a cylinder or a hydraulic cylinder fixed on the top plate of the frame, and the output end of the cylinder or the hydraulic cylinder is transmission-connected to the fixed seat.

[0011] According to the above scheme, a support column is fixed on the bottom plate of the frame, a fixed block is fixed on the upper end of the support column, a shell is hinged on the fixed block, a support plate is fixed on the shell, the turntable is rotatably installed on the support plate, and the support plate can be tilted relative to the bottom plate of the frame through an adjustment component.

[0012] According to the above scheme, two inclined plates are symmetrically fixed on the bottom of the support plate, and a slide groove is formed on the inclined plates. The adjustment assembly includes a screw and two push plates threadedly connected to the screw. The upper ends of the two push plates are respectively arranged corresponding to the inclined surfaces of the two inclined plates. The screw limit assembly is limited on the support column. When the screw is rotated, the two push plates move in the same direction.

[0013] According to the above scheme, the limiting component 1 includes an annular groove and a limiting pin arranged on the outer wall of the middle part of the screw. When the screw passes through the support column, the annular groove is located in the through hole of the support column. The limiting pin passes through the limiting hole of the support column and extends into the through hole, and cooperates with the annular groove to lock the screw so that the screw can rotate relative to the support column without sliding or displacing.

[0014] According to the above scheme, a support is fixed on the support plate, and the turntable can be rotatably installed on the upper end of the support. A limit assembly 2 is provided between the support plate and the turntable. The limit assembly 2 includes a support shaft, a limit plate, a conical plate, a spring, a screw rod and an inclined block. The first end of the support shaft is slidably connected to the support plate, and the second end of the support shaft passes through the turntable and is fixedly connected to the limit plate. The limit plate and the turntable are arranged correspondingly, and the conical plate is fixed on the support shaft between the support plate and the turntable. The spring is sleeved on the support shaft between the conical plate and the support plate, and the two ends of the spring are respectively abutted against the conical plate and the support plate. A spline is fixed on the bottom of the conical plate near the support plate, and a plurality of slots are provided on the support plate to cooperate with the spline, and the plurality of slots are arranged in a ring shape. The first end of the screw rod is fixedly connected to the inclined block, and the inclined surface of the inclined block is arranged correspondingly to the inclined surface of the conical plate. The second end of the screw rod passes through the support and is exposed, and the screw rod is threadedly connected to the support.

[0015] According to the above scheme, the clamping mechanism includes a slide plate, a support plate, an adjusting rod, a sliding seat and a clamping block. The slide plate is slidably arranged on the outer edge of the turntable. The slide plate is fixedly connected to the support plate. The first end of the adjusting rod is formed with a handle end. The second end of the adjusting rod is fixedly connected to the sliding seat after passing through the support plate. The adjusting rod is threadedly connected to the support plate. A plurality of ball bearings are provided on the bottom of the sliding seat near the turntable. The clamping block is hinged on the sliding seat. A rubber pad is fixed to the end of the clamping block away from the sliding seat.

[0016] Beneficial effects of the present invention:

[0017] The present invention is configured in such a way that, with the cooperation of the movable turntable and the movable detection head, different positions of the display screen located on the turntable can be detected. When different positions need to be detected, the different positions of the display screen can be adjusted by manually rotating the turntable, and the angle of the detection head can be adjusted by sliding the detection head to different positions on the fixed seat, and by swinging the handheld detection head. With multi-directional cooperation, detection of different positions of the display screen located on the turntable can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the whole machine of the present invention;

[0019] Figure 2 It is a schematic diagram of the detection mechanism of the present invention;

[0020] Figure 3 It is a schematic diagram of the assembly of the support plate and the adjustment component of the present invention;

[0021] Figure 4 This is a schematic diagram of the assembly of the support column and the screw rod of the present invention;

[0022] Figure 5 It is a schematic diagram of the assembly of the turntable and the support plate of the present invention;

[0023] Figure 6 It is a schematic diagram of the clamping mechanism of the present invention.

[0024] In the figure:

[0025] 1. Frame; 3. Support shaft; 4. Turntable; 5. Clamping mechanism; 6. Cylinder; 7. Detection mechanism; 8. Detection head; 21. Support column; 22. Fixed block; 23. Housing; 24. Support plate; 25. Inclined plate; 26. Slideway; 27. Screw; 28. Ring groove; 29. ​​Limit pin; 210. Push plate; 211. Support; 212. Conical disk; 213. Spring; 214. Gearing; 215. Slot; 216. Screw; 217, inclined block; 218, through hole; 219, limit hole; 51, limit plate; 52, slide plate; 53, support plate; 54, adjustment rod; 55, slide seat; 56, ball bearing; 57, clamping block; 58, rubber pad; 70, fixed seat; 71, guide rail; 72, suspension rod; 73, rotating rod; 74, rotating seat; 75, connecting pin; 76, diverter cover; 77, jet hole; 78, arc guide rod; 79, air pump; 710, air pipe. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is described below in conjunction with the accompanying drawings and embodiments.

[0027] like Figures 1 to 6 As shown, a display screen detection device of the present invention comprises a frame 1, a turntable 4 is movably provided on the bottom plate of the frame 1, a plurality of clamping mechanisms 5 for clamping the display screen are provided on the turntable 4, a detection mechanism 7 is movably provided on the top plate of the frame 1, and the detection mechanism 7 is used to detect the display screen located on the turntable 4; the detection mechanism 7 is driven by a lifting mechanism to move up and down relative to the display screen located on the turntable 4; the detection mechanism 7 comprises a fixed seat 70, a detection head 8 is movably provided on the fixed seat 70, and the detection head 8 can slide and swing relative to the fixed seat 70, and cooperate with the rotatable turntable 4, so that the detection head 8 can detect different positions relative to the display screen located on the turntable 4. With such an arrangement, under the cooperation of the movable turntable 4 and the movable detection head 8, different positions of the display screen located on the turntable 4 can be detected. More specifically, the display screen to be inspected is manually placed on the turntable 4, clamped and positioned by the clamping mechanism 5, and then the detection mechanism 7 is driven by the lifting mechanism to move relative to the display screen on the turntable 4, so that a single position thereof can be inspected. When it is necessary to inspect different positions, the display screen can be adjusted to different positions by manually rotating the turntable 4, and the detection head 8 can be slid to different positions on the fixed seat 70, and the angle of the detection head 8 can be adjusted by swinging the handheld detection head 8. With multi-directional cooperation, the detection of different positions of the display screen on the turntable 4 can be achieved.

[0028] In practical applications, the frame 1 is a groove-shaped bracket formed by a top plate, a side plate and a bottom plate, which can facilitate the installation and removal of the display screen on the turntable 4 and facilitate the handheld detection mechanism 7 to perform detection work.

[0029] In this embodiment, the turntable 4 can rotate and tilt relative to the bottom plate of the frame 1, so that the display screen on the turntable 4 can change its position relative to the detection mechanism 7. This arrangement, in conjunction with the movable detection head 8, can further facilitate the detection of different positions of the display screen on the turntable 4.

[0030] In this embodiment, a guide rail 71 is formed on the fixing seat 70, and a suspension rod 72 is slidably arranged in the guide rail 71. The suspension rod 72 is driven to slide in the guide rail 71 by a rotating rod 73. The first end of the rotating rod 73 is located in the guide rail 71 and is threadedly connected to the upper end of the suspension rod 72. The second end of the rotating rod 73 passes through the guide rail 71 and is exposed. The lower end of the suspension rod 72 passes through the guide rail 71 and is hinged to the detection head 8. In this way, the suspension rod 72 can be driven to slide in the guide rail 71 by manually rotating the rotating rod 73 to adjust the horizontal position of the detection head 8. At the same time, the suspension rod 72 and the detection head 8 are hinged, and the detection head 8 can be held by hand to swing relative to the suspension rod 72 to adjust the angle of the detection head 8.

[0031] In this embodiment, the lower end of the suspension rod 72 is hinged with a rotating seat 74 through a connecting pin 75, and a diverter hood 76 is fixed on the rotating seat 74. The bottom plate of the diverter hood 76 is fixedly connected to the detection head 8. An arc guide rod 78 is fixed to the lower part of the suspension rod 72. The arc guide rod 78 is slidably connected to the diverter hood 76. An inner cavity is formed in the diverter hood 76, and the inner cavity is connected to an air pump 79 through an air pipe 710. A plurality of inclined jet holes 77 are provided on the bottom plate of the diverter hood 76, and the jet holes 77 are arranged corresponding to the detection end of the detection head 8. With such arrangement, during detection, the rotating rod 73 is manually rotated, so that the rotating rod 73 and the hanging block 72 make a threaded motion, and the hanging block 72 drives the guide rod 78 to move, so that the position of the diverter hood 76 changes, and the position of the detection head 8 changes. At the same time, the diverter hood 76 is manually moved to slide on the outside of the guide rod 78, so that the angle of the detection head 8 changes, so that the device can detect the side of the display screen; then the air pump 79 is started, and the air pump 79 starts to intake air into the diverter hood 76, so that the diverter hood 76 blows air through the air jet hole 77 to remove dust at the detection location to prevent dust from affecting the detection result.

[0032] In this embodiment, the lifting mechanism includes a cylinder 6 or a hydraulic cylinder fixed on the top plate of the frame 1, and the output end of the cylinder 6 or the hydraulic cylinder is transmission-connected to the fixed seat 70. In this way, the fixed seat 70 is driven to move up and down by the cylinder 6 or the hydraulic cylinder.

[0033] In this embodiment, a support column 21 is fixed to the bottom plate of the frame 1, a fixed block 22 is fixed to the upper end of the support column 21, a housing 23 is hinged on the fixed block 22, a support plate 24 is fixed on the housing 23, and the turntable 4 is rotatably mounted on the support plate 24, and the support plate 24 can be tilted relative to the bottom plate of the frame 1 through an adjustment component. In this way, the support plate 24 is hinged with the fixed block 22 through the housing 23, so that the support plate 24 can swing up and down relative to the bottom plate of the frame 1 to achieve a tilting effect, thereby adjusting the tilt of the turntable 4 relative to the bottom plate of the frame 1, and then adjusting the tilt of the display screen on the turntable 4 relative to the bottom plate of the frame 1, so as to facilitate the detection of different positions in cooperation with the detection head 8.

[0034] In this embodiment, two inclined plates 25 are symmetrically fixed on the bottom of the support plate 24, and a slide groove 26 is formed on the inclined plate 25. The adjustment assembly includes a screw rod 27 and two push plates 210 threadedly connected to the screw rod 27. The upper ends of the two push plates 210 are respectively arranged corresponding to the inclined surfaces of the two inclined plates 25. The screw rod 27 limit assembly is limited on the support column 21. When the screw rod 27 is rotated, the two push plates 210 are displaced in the same direction. With this arrangement, when detecting the edge of the display screen, the screw rod 27 is manually rotated, and the screw rod 27 rotates and the push plate 210 performs a threaded motion, thereby causing the push plate 210 to move. The push plate 210 moves to squeeze the inclined plate 25, so that the inclined plate 25 drives the support plate 24 to deflect, causing the support plate 24 to tilt, and causing the angle of the display screen on the turntable 4 to change. More specifically, as Figure 3 As shown, when the upper ends of the two push plates 210 are respectively in contact with the center positions of the inclined surfaces of the two inclined plates 25, the support plate 24 is in a horizontal position. When the left side of the support plate 24 needs to be adjusted to tilt upward, the two push plates 210 are driven to move to the right at the same time by rotating the screw 27. When the push plate 210 on the left moves to the right, it pushes the left inclined plate 25 upward, and the push plate 210 on the right moves to the right away from the right inclined plate 25, thereby adjusting the left side of the support plate 24 to tilt upward. When the right side of the support plate 24 needs to be adjusted to tilt upward, the two push plates 210 are driven to move to the left at the same time by rotating the screw 27 in the opposite direction. When the push plate 210 on the left moves to the left, it moves away from the left inclined plate 25, and when the push plate 210 on the right moves to the left, it pushes the right inclined plate 25 upward.

[0035] In this embodiment, the first limiting assembly includes an annular groove 28 and a limiting pin 29 arranged on the outer wall of the middle part of the screw rod 27. When the screw rod 27 passes through the support column 21, the annular groove 28 is located in the through hole 218 of the support column 21. The limiting pin 29 passes through the limiting hole 219 of the support column 21 and then extends into the through hole, and cooperates with the annular groove 28 to lock the screw rod 27 relative to the support column 21 without sliding. In this way, the annular groove 28 is locked in the through hole 218 of the support column 21 by the limiting pin 29, so that the screw rod 27 can rotate relative to the support column 21 without sliding left and right.

[0036] In this embodiment, a support 211 is fixed on the support plate 24, and the turntable 4 can be rotatably installed on the upper end of the support 211. A limit assembly 2 is provided between the support plate 24 and the turntable 4. The limit assembly 2 includes a support shaft 3, a limit plate 51, a conical plate 212, a spring 213, a screw rod 216 and an inclined block 217. The first end of the support shaft 3 is slidably connected to the support plate 24, and the second end of the support shaft 3 passes through the turntable 4 and is fixedly connected to the limit plate 51. The limit plate 51 is correspondingly arranged with the turntable 4. The conical plate 212 is fixed on the support shaft 3 between the support plate 24 and the turntable 4. The spring 213 is sleeved on On the support shaft 3 between the conical disk 212 and the support plate 24, the two ends of the spring 213 are respectively in contact with the conical disk 212 and the support plate 24, a tooth 214 is fixed on the bottom of the conical disk 212 near the support plate 24, and a plurality of slots 215 are provided on the support plate 24 to cooperate with the tooth 214, and the plurality of slots 215 are arranged in a ring shape, the first end of the screw rod 216 is fixedly connected to the inclined block 217, the inclined surface of the inclined block 217 is arranged corresponding to the inclined surface of the conical disk 212, the second end of the screw rod 216 passes through the support 211 and is exposed, and the screw rod 216 is threadedly connected to the support 211, so that, as shown in FIG. Figure 5 As shown, it is in the limited state at this time. When it is necessary to detect different directions, the screw rod 216 is manually rotated, and the screw rod 216 rotates and the support 211 to make a threaded motion, so that the screw rod 216 drives the inclined block 217 to move and disengage the conical disk 212. At this time, the spring 213 is reset to make the conical disk 212 move up, so that the conical disk 212 drives the inserting gear 214 and the slot 215 to disengage, and then the turntable 4 is rotated to make the display screen rotate and change its position. After the adjustment is completed, the screw rod 216 and the support 211 are manually rotated to make a threaded motion, so that the inclined block 217 moves toward the support shaft 3, so that the inclined block 217 squeezes the conical disk 212, so that the conical disk 212 moves down, compresses the spring 213, and makes the inserting gear 214 enter the slot 215 at the corresponding position, so as to limit the turntable 4.

[0037] In this embodiment, the clamping mechanism 5 includes a slide plate 52, a support plate 53, an adjusting rod 54, a slide seat 55 and a clamping block 57. The slide plate 52 is slidably arranged on the outer edge of the turntable 4, and the slide plate 52 is fixedly connected to the support plate 53. The first end of the adjusting rod 54 is formed with a handle end, and the second end of the adjusting rod 54 is fixedly connected to the slide seat 55 after passing through the support plate 53. The adjusting rod 54 is threadedly connected to the support plate 53. A plurality of ball bearings 56 are provided on the bottom of the slide seat 55 near the turntable 4. The clamping block 57 is hinged on the slide seat 55, and a rubber pad 58 is fixed to the end of the clamping block 57 away from the slide seat 55. With such arrangement, when in use, the display screen is placed on the turntable 4, and then the slide plate 52 is manually moved to slide on the outside of the turntable 4, thereby changing the positions of the multiple clamping mechanisms 5, and then the adjusting rod 54 is manually rotated, and the adjusting rod 54 rotates and makes a threaded motion with the support plate 53, thereby making the adjusting rod 54 drive the slide 55 to move, and the slide 55 drives the clamping block 57 to move, so that the rubber pad 58 on the clamping block 57 contacts the edge of the display screen, and the clamping block 57 can be deflected to adapt to the edge of the display screen, so as to facilitate the clamping and positioning of display screens with different aspect ratios.

[0038] In practical applications, there are at least four clamping mechanisms 5, which can correspond to the four corners of the display screen respectively, or work in pairs to clamp and position the diagonal corners of the display screen; the ball bearings 56 can assist the slide 55 to slide on the turntable 4; the rubber pad 58 can prevent contact and damage with the display screen.

[0039] It should be noted that a slide rail cooperating with the slide plate 52 is arranged on the outer edge of the turntable 4 .

[0040] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, which all belong to the protection scope of the present invention.

Claims

1. A display screen detection device, characterized in that: The invention comprises a frame (1), a rotating disk (4) is movably provided on the bottom plate of the frame (1), a plurality of clamping mechanisms (5) for clamping a display screen are provided on the rotating disk (4), and a detection mechanism (7) is movably provided on the top plate of the frame (1), and the detection mechanism (7) is used to detect the display screen located on the rotating disk (4); The detection mechanism (7) is driven by a lifting mechanism to move up and down relative to the display screen located on the turntable (4); The detection mechanism (7) comprises a fixed seat (70), on which a detection head (8) is movably provided. The detection head (8) can slide and swing relative to the fixed seat (70) and cooperate with the rotatable turntable (4), so that the detection head (8) can detect different positions relative to the display screen located on the turntable (4).

2. A display screen detection device according to claim 1, characterized in that: The turntable (4) can rotate and tilt relative to the bottom plate of the frame (1), thereby causing the display screen on the turntable (4) to change position relative to the detection mechanism (7).

3. A display screen detection device according to claim 1, characterized in that: A guide rail (71) is formed on the fixed seat (70), and a suspension rod (72) is slidably provided in the guide rail (71). The suspension rod (72) is driven to slide in the guide rail (71) by a rotating rod (73). The first end of the rotating rod (73) is located in the guide rail (71) and is threadedly connected to the upper end of the suspension rod (72). The second end of the rotating rod (73) passes through the guide rail (71) and is exposed. The lower end of the suspension rod (72) passes through the guide rail (71) and is hinged to the detection head (8).

4. A display screen detection device according to claim 3, characterized in that: The lower end of the suspension rod (72) is hinged with a rotating seat (74) through a connecting pin (75), and a diverter hood (76) is fixed on the rotating seat (74). The bottom plate of the diverter hood (76) is fixedly connected to the detection head (8). An arc-shaped guide rod (78) is fixed to the lower part of the suspension rod (72), and the arc-shaped guide rod (78) is slidably connected to the diverter hood (76). An inner cavity is formed in the diverter hood (76), and the inner cavity is externally connected to an air pump (79) through an air pipe (710). A plurality of obliquely arranged jet holes (77) are provided on the bottom plate of the diverter hood (76), and the jet holes (77) are arranged corresponding to the detection end of the detection head (8).

5. A display screen detection device according to claim 1, characterized in that: The lifting mechanism comprises an air cylinder (6) or a hydraulic cylinder fixed on the top plate of the frame (1), and the output end of the air cylinder (6) or the hydraulic cylinder is transmission-connected to a fixing seat (70).

6. A display screen detection device according to claim 2, characterized in that: A support column (21) is fixed on the bottom plate of the frame (1); a fixed block (22) is fixed on the upper end of the support column (21); a housing (23) is hingedly connected to the fixed block (22); a support plate (24) is fixed to the housing (23); the turntable (4) is rotatably mounted on the support plate (24); and the support plate (24) can be tilted relative to the bottom plate of the frame (1) through an adjustment component.

7. A display screen detection device according to claim 6, characterized in that: Two inclined plates (25) are symmetrically fixed on the bottom of the support plate (24), and a slide groove (26) is formed on the inclined plate (25). The adjustment component includes a screw rod (27) and two push plates (210) threadedly connected to the screw rod (27). The upper ends of the two push plates (210) are respectively arranged corresponding to the inclined surfaces of the two inclined plates (25). The screw rod (27) limiting component is limited on the support column (21). When the screw rod (27) is rotated, the two push plates (210) move in the same direction.

8. A display screen detection device according to claim 7, characterized in that: The first limiting assembly comprises an annular groove (28) and a limiting pin (29) arranged on the outer wall of the middle part of the screw rod (27). When the screw rod (27) passes through the support column (21), the annular groove (28) is located in the through hole (218) of the support column (21). After passing through the limiting hole (219) of the support column (21), the limiting pin (29) extends into the through hole and cooperates with the annular groove (28) to lock the screw rod (27) so that the screw rod (27) can rotate relative to the support column (21) without sliding.

9. A display screen detection device according to claim 6, characterized in that: A support (211) is fixed on the support plate (24), and the turntable (4) is rotatably mounted on the upper end of the support (211). A second limiting assembly is provided between the support plate (24) and the turntable (4), and the second limiting assembly comprises a support shaft (3), a limiting plate (51), a conical plate (212), a spring (213), a screw rod (216) and an inclined block (217). The first end of the support shaft (3) is slidably connected to the support plate (24), and the second end of the support shaft (3) is fixedly connected to the limiting plate (51) after passing through the turntable (4). The limiting plate (51) and the turntable (4) are arranged correspondingly. The conical plate (212) is fixed on the support shaft (3) between the support plate (24) and the turntable (4), and the spring (213) The support shaft (213) is sleeved on the support shaft (3) between the conical disk (212) and the support plate (24), the two ends of the spring (213) are respectively in contact with the conical disk (212) and the support plate (24), a toothing (214) is fixed on the bottom of the conical disk (212) close to the support plate (24), a plurality of slots (215) are provided on the support plate (24) and are engaged with the toothing (214), and the plurality of slots (215) are arranged in an annular shape, a first end of the screw rod (216) is fixedly connected to an inclined block (217), an inclined surface of the inclined block (217) is arranged corresponding to an inclined surface of the conical disk (212), a second end of the screw rod (216) passes through a support seat (211) and is exposed, and the screw rod (216) is threadedly connected to the support seat (211).

10. A display screen detection device according to claim 1, characterized in that: The clamping mechanism (5) comprises a slide plate (52), a support plate (53), an adjusting rod (54), a slide seat (55) and a clamping block (57); the slide plate (52) is slidably arranged on the outer edge of the rotating disk (4); the slide plate (52) is fixedly connected to the support plate (53); a handle end is formed at the first end of the adjusting rod (54); the second end of the adjusting rod (54) passes through the support plate (53) and is fixedly connected to the slide seat (55); the adjusting rod (54) is threadedly connected to the support plate (53); a plurality of balls (56) are arranged on the bottom of the slide seat (55) near the rotating disk (4); the clamping block (57) is hinged to the slide seat (55); a rubber pad (58) is fixed to one end of the clamping block (57) away from the slide seat (55).

Images