A surface quality detection device for a vehicle-mounted screen

Abstract

The utility model discloses a surface quality detection device of vehicle screen relates to vehicle screen quality detection field, including the turnover support mechanism and the detection mechanism of setting in the turnover support mechanism top, the turnover support mechanism includes upper detection platform and lower detection platform, both ends of the length direction of upper detection platform are fixed with the rotating shaft, the one end of rotating shaft is away from upper detection platform and is connected with the sliding seat that rotates, the sliding seat has the freedom of moving along the horizontal direction, the lower detection platform is arranged below upper detection platform, the detection mechanism includes the industrial camera, the industrial camera has the freedom of moving along the height direction of lower detection platform, and the screen is automatically turned over and is operated, realizes the double -sided detection of screen, has reduced the manual cost, has improved the detection efficiency, makes the detection data uniformization, has improved the inspection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of vehicle screen quality inspection, specifically a surface quality inspection device for vehicle screens. Background Technology

[0002] In the field of automotive screen manufacturing, with the rapid development of smart cockpit technology, automotive screens (such as central control screens and instrument panel displays) are evolving towards ultra-thinness, larger size, and irregular shapes (such as curved screens and narrow-bezel screens). Their surface quality (including defects such as scratches, stains, uneven coating, and bubbles) directly affects product reliability and user experience. Therefore, automotive screens need to undergo quality inspection before leaving the factory. Traditional manual inspection relies on visual judgment by quality inspectors, which suffers from low efficiency, insufficient accuracy, and high labor intensity. With the rapid development of machine vision, screen surface quality is now inspected using machine vision. Its core principle is to collect images of the screen surface through industrial cameras, analyze them through image processing algorithms, and compare them with standard templates to determine whether there are defects such as scratches, stains, and bubbles. Since the screen has two sides, both sides need to be inspected during testing. Currently, after one side of the screen is inspected, it needs to be manually flipped over. After manual flipping, the screen position may shift, requiring recalibration of the camera's field of view, which interrupts the inspection process and affects data consistency. Secondly, manual flipping is inefficient and labor-intensive. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a surface quality testing device for vehicle screens to address the deficiencies of the prior art.

[0004] The purpose of this utility model is achieved through the following technical solution: a surface quality inspection device for vehicle screens, comprising a flip-up support mechanism and an inspection mechanism disposed above the flip-up support mechanism. The flip-up support mechanism includes an upper inspection platform and a lower inspection platform. Both ends of the upper inspection platform are fixed with rotating shafts in the length direction. A slide is rotatably connected to the end of the rotating shaft away from the upper inspection platform. The slide has a degree of freedom to move in the horizontal direction. The lower inspection platform is arranged below the upper inspection platform. The inspection mechanism includes an industrial camera, which has a degree of freedom to move in the height direction of the lower inspection platform.

[0005] Furthermore, both ends of the upper detection platform along its length are provided with strip-shaped bases, the top of the strip-shaped bases is fixed with T-shaped guide rails, and the bottom of the slide is provided with T-shaped grooves adapted to the T-shaped guide rails.

[0006] Furthermore, a motor is mounted on the slide, and the output shaft of the motor is connected to a rotating shaft via a coupling.

[0007] Furthermore, a cylinder is vertically arranged below the lower testing platform, and the telescopic shaft of the cylinder is connected to the lower testing platform.

[0008] Furthermore, the detection mechanism also includes a lifting beam, columns, a sliding beam, and a camera mounting base. Two columns are spaced apart, and the flipping support mechanism is located between the two columns. The two ends of the lifting beam are slidably mounted on the two columns, the sliding beam is slidably mounted on the lifting beam, the camera mounting base is slidably mounted on the sliding beam, and the industrial camera is mounted on the camera mounting base. The direction of movement of the camera mounting base is perpendicular to the direction of movement of the sliding beam.

[0009] Furthermore, a screw groove is provided on the end face of the column near the lifting beam, and a screw is vertically installed in the screw groove. The screw is rotatably connected to the column, and a screw slider is threaded onto the screw. The lifting beam is connected to the screw slider, and a screw motor is installed on the top of the column. The output shaft of the screw motor is connected to the screw.

[0010] Furthermore, a first linear drive module is installed at the bottom of the lifting beam, the sliding beam is installed on the slide of the first linear drive module, a second linear drive module is installed at the bottom of the sliding beam, and the camera mounting base is installed on the slide of the second linear drive module.

[0011] Furthermore, the upper testing platform is provided with a first negative pressure chamber, and the top surface of the upper testing platform is provided with a plurality of first negative pressure holes, the first negative pressure holes being connected to the first negative pressure chamber; the lower testing platform is provided with a second negative pressure chamber, and the top surface of the lower testing platform is provided with a plurality of second negative pressure holes, the second negative pressure holes being connected to the second negative pressure chamber.

[0012] Furthermore, both the first negative pressure hole and the second negative pressure hole are threaded holes. The size of the negative pressure adsorption area can be adjusted by screwing the sealing shaft into the first negative pressure hole and the second negative pressure hole. The top of the sealing shaft is provided with an internal hexagonal groove.

[0013] The beneficial effects of this utility model are:

[0014] First, the screen is placed on the upper inspection platform, and one side of the screen is inspected using an industrial camera. Then, the upper inspection platform rotates the screen 180° so that it lands on the lower inspection platform. Next, the upper inspection platform moves to one side of the lower inspection platform, exposing the flipped screen on the lower inspection platform. The other side of the screen is then inspected using an industrial camera, achieving double-sided inspection of the screen. The screen flipping is completed automatically, reducing labor costs, improving inspection efficiency, ensuring consistent inspection data, and enhancing inspection accuracy. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the surface quality testing device for a vehicle-mounted screen according to the present invention. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the surface quality testing device for a vehicle-mounted screen according to the present invention. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the internal structure of the upper testing platform in the surface quality testing device for vehicle screens according to this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the lower testing platform in the surface quality testing device for vehicle screens according to this utility model;

[0019] In the diagram, 1-upper inspection platform, 2-lower inspection platform, 3-rotating shaft, 4-slide block, 5-industrial camera, 6-strip base, 7-T-shaped guide rail, 8-motor, 9-cylinder, 10-lifting beam, 11-column, 12-sliding beam, 13-camera mounting base, 14-lead screw groove, 15-lead screw, 16-lead screw slider, 17-lead screw motor, 18-first linear drive module, 19-second linear drive module, 20-first negative pressure chamber, 21-first negative pressure hole, 22-second negative pressure chamber, 23-second negative pressure hole, 24-sealing shaft. Detailed Implementation

[0020] Example 1

[0021] like Figures 1 to 4 As shown, a surface quality inspection device for an in-vehicle screen includes a flip-up support mechanism and an inspection mechanism disposed above the flip-up support mechanism. The flip-up support mechanism includes an upper inspection platform 1 and a lower inspection platform 2. Rotating shafts 3 are fixed at both ends of the upper inspection platform 1 along its length. A slide 4 is rotatably connected to the end of the rotating shaft 3 away from the upper inspection platform 1. The slide 4 has a degree of freedom to move horizontally. The lower inspection platform 2 is arranged below the upper inspection platform 1. The inspection mechanism includes an industrial camera 5, which has a degree of freedom to move along the height of the lower inspection platform 2. The screen is first placed on the upper inspection platform 1, and the screen is inspected by the industrial camera 5. One side of the screen is inspected, and then the rotating shaft 3 rotates, causing the upper inspection platform 1 to rotate 180°, so that the screen falls onto the lower inspection platform 2. Then, the upper inspection platform 1 moves to one side of the lower inspection platform 2, exposing the flipped screen on the lower inspection platform 2. Since the inspection height of the screen has changed, the industrial camera 5 moves downward, and then the other side of the screen is inspected through the industrial camera 5, realizing double-sided inspection of the screen. The screen flipping is completed automatically, reducing labor costs, improving inspection efficiency, and ensuring that the focal length of the industrial camera 5 is the same for the two inspections, making the inspection data consistent and improving inspection accuracy.

[0022] Example 2

[0023] Based on Example 1, such as Figure 1 , Figure 3 and Figure 4 As shown, the upper testing platform 1 is provided with a first negative pressure chamber 20, and the top surface of the upper testing platform 1 is provided with a plurality of first negative pressure holes 21, which are connected to the first negative pressure chamber 20. The lower testing platform 2 is provided with a second negative pressure chamber 22, and the top surface of the lower testing platform 2 is provided with a plurality of second negative pressure holes 23, which are connected to the second negative pressure chamber 22. In order to prevent the screen from shifting during the testing process and from falling off the upper testing platform 1 in advance when flipping, the first negative pressure holes 21 are provided on the upper testing platform 1 and the second negative pressure holes 23 are provided on the lower testing platform 2. Both the upper testing platform 1 and the lower testing platform 2 are connected to a negative pressure pump through pipes. The negative pressure pump generates negative pressure in the first negative pressure chamber 20 and the second negative pressure chamber 22, thereby adsorbing the screen onto the upper testing platform 1 or the lower testing platform 2, ensuring that the screen will not move during the inspection process. In addition, the upper testing platform 1 adsorbs the screen for flipping, which can ensure that the screen is accurately flipped 180°.

[0024] Furthermore, both the first negative pressure hole 21 and the second negative pressure hole 23 are threaded holes. The size of the negative pressure adsorption area can be adjusted by screwing the sealing shaft 24 into the first negative pressure hole 21 and the second negative pressure hole 23. The top of the sealing shaft 24 is provided with an internal hexagonal groove. In actual production, screens of different sizes will be produced. The number of the first negative pressure hole 21 and the second negative pressure hole 23 can be adjusted by the coverage size of the screen, so as to adapt to the size of the screen and adjust the negative pressure area, and avoid some of the first negative pressure holes 21 not working on the screen and affecting the negative pressure effect.

[0025] Example 3

[0026] Based on Example 2, such as Figure 1 and Figure 2As shown, strip-shaped bases 6 are provided at both ends of the upper inspection platform 1 along its length. A T-shaped guide rail 7 is fixed to the top of the strip-shaped base 6. A T-shaped groove adapted to the T-shaped guide rail 7 is opened at the bottom of the slide 4. A push cylinder is installed on the strip-shaped base 6, and the telescopic shaft of the push cylinder is connected to the slide 4. A motor 8 is installed on the slide 4, and the output shaft of the motor 8 is connected to the rotating shaft 3 via a coupling. A cylinder 9 is vertically arranged below the lower inspection platform 2, and the telescopic shaft of the cylinder 9 is connected to the lower inspection platform 2. The motor 8 drives the upper inspection platform 1 to rotate 180° via the rotating shaft 3, causing the upper inspection platform 1 to rotate 180° to complete the flipping of the screen. Then, the cylinder 9 drives the lower inspection platform 2... The upper inspection platform 1 moves upward, causing the lower inspection platform 2 to contact the screen. Then, the negative pressure on the upper inspection platform 1 is disconnected, and the negative pressure on the lower inspection platform 2 is activated, thus placing the flipped screen onto the lower inspection platform 2. The lower inspection platform 2 resets, and then the cylinder is pushed to move the upper inspection platform 1 to one side of the lower inspection platform 2, so that the screen on the lower inspection platform 2 is within the detection range of the industrial camera 5. After the screen on the lower inspection platform 2 is inspected, the screen is manually or by means of a robotic arm placed onto different conveyor belts according to the inspection results. Finally, the upper inspection platform 1 resets, and the next screen to be inspected is loaded onto the upper inspection platform 1 manually or by means of a robotic arm. The above operation is repeated to complete the double-sided inspection of the screen.

[0027] Example 4

[0028] Based on Example 3, such as Figure 1 and Figure 2 As shown, the inspection mechanism also includes a lifting beam 10, columns 11, a sliding beam 12, and a camera mounting base 13. Two columns 11 are spaced apart, and a flipping support mechanism is located between the two columns 11. The two ends of the lifting beam 10 are slidably mounted on the two columns 11 respectively. The sliding beam 12 is slidably mounted on the lifting beam 10. The camera mounting base 13 is slidably mounted on the sliding beam 12. The industrial camera 5 is mounted on the camera mounting base 13. The movement direction of the camera mounting base 13 is perpendicular to the movement direction of the sliding beam 12. The height of the industrial camera 5 can be adjusted by moving the lifting beam 10 up and down to maintain a specific focal length for inspecting the screens on the upper inspection platform 1 and the lower inspection platform 2. The position of the industrial camera 5 on the horizontal plane can be adjusted by moving the sliding beam 12 and the camera mounting base 13 to plan the movement range of the industrial camera 5 according to the size of the screen, so that the industrial camera 5 can gradually capture the screen surface and achieve comprehensive inspection of the screen.

[0029] Furthermore, a lead screw groove 14 is provided on the end face of the column 11 near the lifting beam 10. A lead screw 15 is vertically installed in the lead screw groove 14. The lead screw 15 is rotatably connected to the column 11. A lead screw slider 16 is threaded onto the lead screw 15. The lifting beam 10 is connected to the lead screw slider 16. A lead screw motor 17 is installed on the top of the column 11. The output shaft of the lead screw motor 17 is connected to the lead screw 15. The lead screw motor 17 drives the lead screw 15 to rotate, causing the lead screw slider 16 to move the lifting beam 10 up and down, thereby adjusting the height of the industrial camera 5.

[0030] Furthermore, a first linear drive module 18 is installed at the bottom of the lifting beam 10, a sliding beam 12 is installed on the slide of the first linear drive module 18, a second linear drive module 19 is installed at the bottom of the sliding beam 12, and a camera mounting base 13 is installed on the slide of the second linear drive module 19. The sliding beam 12 is moved by the first linear drive module 18, and the camera mounting base 13 is moved by the second linear drive module 19, so that the industrial camera 5 has two degrees of freedom of movement, can adjust the imaging position, and realize full detection of the screen.

Claims

1. A surface quality inspection device for a vehicle-mounted screen, characterized in that, The device includes a flipping support mechanism and a detection mechanism disposed above the flipping support mechanism. The flipping support mechanism includes an upper detection platform (1) and a lower detection platform (2). Both ends of the upper detection platform (1) are fixed with a rotating shaft (3) in the length direction. The end of the rotating shaft (3) away from the upper detection platform (1) is rotatably connected to a slide (4). The slide (4) has a degree of freedom to move in the horizontal direction. The lower detection platform (2) is arranged below the upper detection platform (1). The detection mechanism includes an industrial camera (5). The industrial camera (5) has a degree of freedom to move in the height direction of the lower detection platform (2).

2. The surface quality inspection device for a vehicle-mounted screen according to claim 1, characterized in that, Both ends of the upper detection platform (1) are provided with strip bases (6) in the length direction. A T-shaped guide rail (7) is fixed on the top of the strip base (6). A T-shaped groove adapted to the T-shaped guide rail (7) is opened at the bottom of the slide (4).

3. The surface quality inspection device for a vehicle-mounted screen according to claim 1, characterized in that, A motor (8) is mounted on the slide (4), and the output shaft of the motor (8) is connected to the rotating shaft (3) via a coupling.

4. The surface quality inspection device for a vehicle-mounted screen according to claim 1, characterized in that, A cylinder (9) is vertically arranged below the lower testing platform (2), and the telescopic shaft of the cylinder (9) is connected to the lower testing platform (2).

5. The surface quality inspection device for a vehicle-mounted screen according to claim 1, characterized in that, The detection mechanism also includes a lifting beam (10), a column (11), a sliding beam (12), and a camera mounting base (13). There are two columns (11) spaced apart. The flipping support mechanism is located between the two columns (11). The two ends of the lifting beam (10) are slidably mounted on the two columns (11), respectively. The sliding beam (12) is slidably mounted on the lifting beam (10). The camera mounting base (13) is slidably mounted on the sliding beam (12). The industrial camera (5) is mounted on the camera mounting base (13). The moving direction of the camera mounting base (13) is perpendicular to the moving direction of the sliding beam (12).

6. The surface quality inspection device for a vehicle-mounted screen according to claim 5, characterized in that, The column (11) has a screw groove (14) on its end face near the lifting beam (10). A screw (15) is vertically installed in the screw groove (14). The screw (15) is rotatably connected to the column (11). A screw slider (16) is threaded onto the screw (15). The lifting beam (10) is connected to the screw slider (16). A screw motor (17) is installed on the top of the column (11). The output shaft of the screw motor (17) is connected to the screw (15).

7. The surface quality inspection device for a vehicle-mounted screen according to claim 5, characterized in that, The bottom of the lifting beam (10) is equipped with a first linear drive module (18), the sliding beam (12) is mounted on the slide of the first linear drive module (18), the bottom of the sliding beam (12) is equipped with a second linear drive module (19), and the camera mounting base (13) is mounted on the slide of the second linear drive module (19).

8. The surface quality inspection device for a vehicle-mounted screen according to claim 1, characterized in that, The upper testing platform (1) is provided with a first negative pressure chamber (20), and the top surface of the upper testing platform (1) is provided with a plurality of first negative pressure holes (21), the first negative pressure holes (21) are connected to the first negative pressure chamber (20). The lower testing platform (2) is provided with a second negative pressure chamber (22), and the top surface of the lower testing platform (2) is provided with a plurality of second negative pressure holes (23), the second negative pressure holes (23) are connected to the second negative pressure chamber (22).

9. The surface quality inspection device for a vehicle-mounted screen according to claim 8, characterized in that, Both the first negative pressure hole (21) and the second negative pressure hole (23) are threaded holes. The size of the negative pressure adsorption area can be adjusted by screwing the sealing shaft (24) into the first negative pressure hole (21) and the second negative pressure hole (23). The top of the sealing shaft (24) is provided with an internal hexagonal groove.

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