A three-dimensional visual inspection device

Abstract

The utility model discloses a three-dimensional visual inspection device, comprising: a machine body, a three-axis moving mechanism assembled on the top of the machine body, a detection unit assembled on the output end of the three-axis moving mechanism, and a horizontal transparent support plate assembled on the machine body through a support frame and spaced apart from the top of the machine body, wherein the detection unit comprises a mounting seat fixedly assembled on the output end of the three-axis moving mechanism, an upper detection camera assembled on the mounting seat and located above the transparent support plate, a lower detection camera assembled on the mounting seat and located below the transparent support plate, and a laser profiler fixedly assembled on the mounting seat and located above the transparent support plate, wherein the lower detection camera is in a relative state with the upper detection camera, and through the cooperation of the upper detection camera and the lower detection camera with the transparent support plate, image information can be obtained at the bottom and top of a mobile phone product at the same time, and visual inspection can be performed on both sides of the product at the same time, thereby improving visual inspection efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field related to visual detection, and in particular to a three-dimensional visual detection device. Background Art

[0002] Visual inspection is to use machines to replace human eyes to make measurements and judgments. Visual inspection refers to converting the captured target into image signals through machine vision products, transmitting them to a dedicated image processing system, and converting them into digital signals based on pixel distribution, brightness, color and other information; the image system performs various operations on these signals to extract the characteristics of the target, and then controls the equipment action on site based on the judgment results. It is a valuable mechanism for production, assembly or packaging.

[0003] At present, the visual inspection device uses an inspection camera to collect image information of parts from above. It can be used with a conveyor belt, or the parts can be placed in a fixed area for the inspection camera to collect information. Visual inspection can not only improve the inspection efficiency, but also improve the accuracy of qualified judgment. When performing visual inspection on thin products such as plates and covers, it is necessary to perform visual inspection on both sides of the parts. Thin products can be stamped, cast or CNC machined. After inspecting one side of the part, it is necessary to flip it over and inspect the other side. The time required for inspection is doubled, which will reduce the inspection efficiency of the product. Therefore, it is necessary to design a three-dimensional visual inspection device. Utility Model Content

[0004] In view of the above technical problems, the purpose of the utility model is to overcome the problem of low inspection efficiency when visually inspecting thin products such as plates and covers in the prior art.

[0005] In order to achieve the above-mentioned object, the utility model provides a three-dimensional visual inspection device, comprising: a machine body, a three-axis moving mechanism mounted on the top of the machine body, a detection unit mounted on the output end of the three-axis moving mechanism, and a horizontal transparent support plate mounted on the machine body through a support frame and spaced apart from the top of the machine body;

[0006] The detection unit includes a mounting base fixedly mounted on the output end of the three-axis moving mechanism, an upper detection camera mounted on the mounting base and located above a transparent support plate, a lower detection camera mounted on the mounting base and located below the transparent support plate, and a laser profiler fixedly mounted on the mounting base and located above the transparent support plate, wherein the lower detection camera is in a relative state to the upper detection camera.

[0007] Preferably, the lower detection camera is mounted on the mounting seat via an adjustment mechanism;

[0008] The adjustment mechanism includes a plurality of guide seats fixedly mounted on the mounting seat, a plurality of guide rods corresponding to each other and vertically sliding through the guide seats, a lower connecting arm fixedly connected to the lower ends of the plurality of guide rods, a first mounting frame mounted on the lower connecting arm, and an adjustment member mounted on the mounting seat and connected to the plurality of guide rods for driving the guide rods to slide vertically, and the lower detection camera is mounted on the first mounting frame.

[0009] Preferably, the adjusting member includes a threaded seat fixedly mounted on a mounting seat, an upper connecting arm fixedly connected to the upper ends of a plurality of guide rods, a threaded rod axially connected to the upper connecting arm and having its lower end threadedly passing through the threaded seat, a screw cap fixedly assembled on the top of the threaded rod, and a limit piece fixedly assembled on the lower end of the threaded rod.

[0010] Preferably, the support frame is equipped with positioning mechanisms located at both ends of the transparent support plate;

[0011] The positioning mechanism includes a transparent positioning block that can slide against the surface of the label on the transparent support plate, a horizontal strip slide fixedly mounted on the support frame, a slider slidably mounted on the strip slide, and a sliding arm whose length direction is perpendicular to the length direction of the strip slide and slides through the slider along its own length direction. The slider is threadedly connected with at least one end that can abut against a first locking bolt on the strip slide and at least one end that can abut against a second locking bolt on the sliding arm, and the sliding arm is fixedly connected to the transparent positioning block.

[0012] Preferably, the transparent positioning block is L-shaped.

[0013] Preferably, a hood is mounted on the top of the machine body, and a side of the hood close to the transparent supporting plate is an open end.

[0014] Preferably, a display is mounted on the top of the open end of the hood.

[0015] According to the above technical solution, the three-dimensional visual inspection device provided by the utility model has the following beneficial effects when used: firstly, by cooperating with the upper inspection camera and the lower inspection camera and the transparent support plate, the bottom and top of the mobile phone product can be imaged at the same time, and visual inspection can be performed on both sides of the product at the same time, thereby improving the visual inspection efficiency;

[0016] Secondly, when testing the cast products, due to different processing techniques, there are problems such as failure to cool in time resulting in breakage of the protrusions during demolding or deformation of the protrusions after demolding. Therefore, a laser profiler is installed on the mounting seat to detect deformation, breakage and other problems of the protrusions of the cast products, so as to improve the usability of the device.

[0017] Other features and advantages of the utility model will be described in detail in the subsequent specific implementation mode; and the parts not involved in the utility model are the same as the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0019] Figure 1 It is a three-dimensional structural schematic diagram of a three-dimensional visual detection device provided by the present invention;

[0020] Figure 2 This is a partial three-dimensional structure diagram of a three-dimensional visual inspection device provided by the present invention. Figure 1 ;

[0021] Figure 3 This is a partial three-dimensional structure diagram of a three-dimensional visual inspection device provided by the present invention. Figure 2 ;

[0022] Figure 4 It is a three-dimensional structural schematic diagram of a detection unit of a three-dimensional visual detection device provided by the present invention.

[0023] Description of Reference Numerals

[0024] 1. Machine body; 2. Three-axis moving mechanism; 3. Support frame; 4. Transparent support plate; 5. Mounting seat; 6. Upper detection camera; 7. Lower detection camera; 8. Laser profiler; 9. Guide seat; 10. Guide rod; 11. Lower connecting arm; 12. First mounting frame; 13. Threaded seat; 14. Upper connecting arm; 15. Threaded rod; 16. Screw cap; 17. Limiting piece; 18. Transparent positioning block; 19. Strip slide seat; 20. Sliding block; 21. Sliding arm; 22. Machine cover; 23. Display screen. DETAILED DESCRIPTION

[0025] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0026] In the present utility model, unless otherwise stated, directional words such as "upper, lower, inside, outside" contained in a term merely represent the orientation of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0027] like Figure 1-4As shown, a three-dimensional visual inspection device comprises: a body 1, a three-axis moving mechanism 2 mounted on the top of the body 1, a detection unit mounted on the output end of the three-axis moving mechanism 2, and a horizontal transparent support plate 4 mounted on the body 1 through a support frame 3 and spaced apart from the top of the body 1;

[0028] The detection unit includes a mounting base 5 fixedly mounted on the output end of the three-axis moving mechanism 2, an upper detection camera 6 mounted on the mounting base 5 and located above the transparent support plate 4, a lower detection camera 7 mounted on the mounting base 5 and located below the transparent support plate 4, and a laser profiler 8 fixedly mounted on the mounting base 5 and located above the transparent support plate 4, and the lower detection camera 7 is in a relative state to the upper detection camera 6.

[0029] A second mounting frame is fixedly mounted on the mounting seat 5, and the upper detection camera 6 and the laser profiler 8 are both mounted on the second mounting frame; the three-axis moving mechanism 2 is an existing mature mechanism, and the structure and working principle will not be elaborated in this article.

[0030] Before visual inspection of the products is required, qualified products and various problematic products are placed on a transparent support plate 4. The three-axis moving mechanism 2 moves with the inspection unit, and the image information and top three-dimensional information of the products and problematic products are collected and transmitted to the body 1 for comparison during inspection.

[0031] The product to be inspected is placed on the transparent support plate 4, and the three-axis moving mechanism 2 with the detection unit including the transparent support plate 4 moves, so that the upper detection camera 6 and the laser profiler 8 move to the top of the product to be inspected. At this time, the lower detection camera 7 is located directly below the product to be inspected. The three-axis moving mechanism 2 drives the detection unit to move in the detection area, and the upper detection camera 6 and the lower detection camera 7 will collect image information of the top and bottom of the product, and the laser tube profiler will collect three-dimensional information of the top of the product. After receiving the information transmitted by the upper detection camera 6, the lower detection camera 7 and the laser profiler 8, the head will compare it with the previously stored information of qualified products and unqualified products to determine whether the product is qualified. The upper detection camera 6 and the lower detection camera 7 can detect damage defects such as scratches on the bottom and top of the product, and can simultaneously collect images of the top and bottom of the product. The detection efficiency is high, and there is no need to turn the product over for detection. The laser profiler 8 can detect whether the protruding parts of the product are deformed and broken.

[0032] The transparent support plate 4 can be made of glass or other transparent materials, so that light can pass through the transparent support plate 4, so that the lower detection camera 7 can collect image information of the bottom of the product.

[0033] The lower detection camera 7 is assembled on the mounting seat 5 through an adjustment mechanism;

[0034] The adjustment mechanism includes a plurality of guide seats 9 fixedly mounted on the mounting seat 5, a plurality of guide rods 10 correspondingly and vertically sliding through the guide seats 9, a lower connecting arm 11 fixedly connected to the lower ends of the plurality of guide rods 10, a first mounting frame 12 mounted on the lower connecting arm 11, and an adjustment member mounted on the mounting seat 5 and connected to the plurality of guide rods 10 and used to drive the guide rods 10 to slide vertically. The lower detection camera 7 is mounted on the first mounting frame 12.

[0035] The distance between the lower detection camera 7 and the upper detection camera 6 can be adjusted by the adjustment mechanism. The distance between the lower detection camera 7 and the upper detection camera 6 can be adjusted according to the height of the product itself, shooting requirements, etc. Because the upper detection camera 6 and the lower detection camera 7 can simultaneously image the product, and the three-axis parallel mechanism can drive the detection unit to adjust the position, the distance between the upper detection camera 6 and the lower detection camera 7 is adjusted, that is, the shooting distance between the upper detection camera 6 and the lower detection camera 7 is adjusted. When the shooting distance of the upper detection camera 6 changes, the scanning distance of the laser profiler 8 will also change.

[0036] The adjusting member includes a threaded seat 13 fixedly mounted on the mounting seat 5, an upper connecting arm 14 fixedly connected to the upper ends of the plurality of guide rods 10, a threaded rod 15 axially connected to the upper connecting arm 14 and having its lower end threadedly passed through the threaded seat 13, a screw cap 16 fixedly assembled on the top of the threaded rod 15, and a limiter 17 fixedly assembled on the lower end of the threaded rod 15.

[0037] The threaded rod 15 is driven to rotate by the screw cap 16, and the threaded rod 15 drives the upper connecting arm 14 to move vertically, and the upper connecting arm 14 drives the guide rod 10 to slide vertically on the guide seat 9; when the guide rod 10 slides downward on the guide seat 9, the distance between the upper detection camera 6 and the lower detection camera 7 increases; when the guide rod 10 slides upward on the guide seat 9, the distance between the upper detection camera 6 and the lower detection camera 7 decreases.

[0038] The support frame 3 is equipped with positioning mechanisms located at both ends of the transparent support plate 4;

[0039] The positioning mechanism includes a transparent positioning block 18 that can slide against the marked surface on the transparent support plate 4, a horizontal strip slide 19 fixedly mounted on the support frame 3, a slider 20 slidably mounted on the strip slide 19, and a slide arm 21 whose length direction is perpendicular to the length direction of the strip slide 19 and slides through the slider 20 along its own length direction. The slider 20 is threadedly connected with at least one end that can abut against a first locking bolt on the strip slide 19 and at least one end that can abut against a second locking bolt on the slide arm 21. The slide arm 21 is fixedly connected to the transparent positioning block 18.

[0040] Loosen the first locking bolt and the second locking bolt, the slider 20 can slide on the strip slide 19, and the slide arm 21 can slide on the slider 20, so as to adjust the position of the transparent positioning block 18 on the transparent support plate 4, and then tighten the first locking bolt and the second locking bolt to fix the position of the transparent positioning block 18 to position different products.

[0041] The strip slide 19 is assembled on the support frame 3 instead of being directly assembled on the transparent support plate 4. One reason is the material of the transparent support plate 4 itself. When glass material is used, it is inconvenient to process the transparent support plate 4 to install the strip slide 19. At the same time, it can also avoid the influence of the strip slide 19 on the collected image.

[0042] The material of the transparent positioning block 18 can be the same as that of the transparent support plate 4 . The advantage of using a transparent material is that it reduces interference with the upper detection camera 6 , the lower detection camera and the laser profiler 8 .

[0043] The transparent positioning block 18 is in an L-shape.

[0044] The L-shaped transparent positioning block 18 is more convenient for positioning the product.

[0045] A hood 22 is mounted on the top of the machine body 1, and a side of the hood 22 close to the transparent supporting plate is an open end.

[0046] The hood 22 can not only protect the equipment, but also reduce the impact of the external environment on the detection. A safety grating is arranged on the side wall of the opening end of the hood 22.

[0047] The top of the open end of the hood 22 is equipped with a display.

[0048] The machine body 1 can output data and detection results through a display, making it convenient for inspectors to view relevant data and results.

[0049] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0050] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0051] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A three-dimensional visual inspection device, characterized in that: include: A machine body (1), a three-axis moving mechanism (2) mounted on the top of the machine body (1), a detection unit mounted on the output end of the three-axis moving mechanism (2), and a horizontal transparent support plate (4) mounted on the machine body (1) via a support frame (3) and spaced apart from the top of the machine body (1); The detection unit comprises a mounting seat (5) fixedly mounted on the output end of the three-axis moving mechanism (2), an upper detection camera (6) mounted on the mounting seat (5) and located above the transparent support plate (4), a lower detection camera (7) mounted on the mounting seat (5) and located below the transparent support plate (4), and a laser profiler (8) fixedly mounted on the mounting seat (5) and located above the transparent support plate (4), wherein the lower detection camera (7) is in a relative state to the upper detection camera (6).

2. A three-dimensional visual inspection device according to claim 1, characterized in that: The lower detection camera (7) is assembled on the mounting seat (5) through an adjustment mechanism; The adjustment mechanism comprises a plurality of guide seats (9) fixedly mounted on the mounting seat (5), a plurality of guide rods (10) correspondingly and vertically sliding through the guide seats (9), a lower connecting arm (11) fixedly connected to the lower ends of the plurality of guide rods (10), a first mounting frame (12) mounted on the lower connecting arm (11), and an adjustment member mounted on the mounting seat (5) and connected to the plurality of guide rods (10) for driving the guide rods (10) to slide vertically, wherein the lower detection camera (7) is mounted on the first mounting frame (12).

3. A three-dimensional visual inspection device according to claim 2, characterized in that: The adjusting member comprises a threaded seat (13) fixedly mounted on a mounting seat (5), an upper connecting arm (14) fixedly connected to the upper ends of a plurality of guide rods (10), a threaded rod (15) axially connected to the upper connecting arm (14) and having its lower end threadedly passing through the threaded seat (13), a screw cap (16) fixedly mounted on the top of the threaded rod (15), and a stopper (17) fixedly mounted on the lower end of the threaded rod (15).

4. A three-dimensional visual inspection device according to claim 1, characterized in that: The support frame (3) is equipped with positioning mechanisms located at both ends of the transparent support plate (4); The positioning mechanism comprises a transparent positioning block (18) which can slide in contact with the marking surface on the transparent support plate (4), a horizontal strip slide seat (19) fixedly mounted on the support frame (3), a slider (20) slidably mounted on the strip slide seat (19), and a slide arm (21) whose length direction is perpendicular to the length direction of the strip slide seat (19) and slides through the slider (20) along its own length direction, the slider (20) being threadedly connected with at least one end which can abut against a first locking bolt on the strip slide seat (19) and at least one end which can abut against a second locking bolt on the slide arm (21), and the slide arm (21) is fixedly connected to the transparent positioning block (18).

5. A three-dimensional visual inspection device according to claim 4, characterized in that: The transparent positioning block (18) is in an L-shape.

6. A three-dimensional visual inspection device according to claim 1, characterized in that: The top of the machine body (1) is equipped with a hood (22), and the side of the hood (22) close to the transparent supporting plate is an open end.

7. A three-dimensional visual inspection device according to claim 6, characterized in that: The top of the open end of the hood (22) is equipped with a display.

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