Machine vision reverse side detection device

Abstract

The utility model discloses a machine vision reverse side detection device which comprises a working table, a conveying belt is arranged in the working table, a portal frame is fixedly connected to the top of the working table, a detection mechanism is installed on the top of the working table, an adjusting mechanism is arranged on the outer side of the detection mechanism, and the detection mechanism comprises a computer. A connecting wire is fixedly connected to the outer side of the computer, a CCD camera is fixedly connected to the outer side of the connecting wire, a light source body is arranged on the outer side of the CCD camera, the adjusting mechanism comprises an operation box, connecting plates are fixedly connected to the outer side of the operation box, a rotating rod is rotationally connected between the connecting plates, and the rotating rod is fixedly connected to the outer side of the operation box. According to the machine vision reverse side detection device, the reverse side of an object can be efficiently and accurately detected, and the light source angle and the detection position can be flexibly adjusted according to actual requirements.

Description

Technical Field

[0001] This utility model relates to the field of visual reverse side detection technology, specifically a machine vision reverse side detection device. Background Technology

[0002] A machine vision reverse side inspection device is a device that uses machine vision technology to inspect the reverse side of an object. It is typically based on optical imaging principles, using a camera to capture image information of the object's reverse side, and then transmitting the image to a computer or a specialized image processing system. The system uses image processing algorithms to analyze, process, and extract features from the image, comparing it with preset standard models or parameters to determine whether there are defects, flaws, dimensional deviations, or other problems on the object's reverse side.

[0003] Based on the authorized patent "CN206725421U" machine vision reverse inspection device, it includes an inspection box, an inspection sample located directly above the inspection box, and a dome light source illuminating the inspection sample from below. A reflector is positioned at a 45° angle inside the inspection box to image the inspection sample. A camera is positioned on the side of the inspection box and aligned with the reflector. An optical glass for light transmission is provided on the top cover of the inspection box. A first air pipe is located above and to the side of the optical glass to blow away dust from it. A glass protective cover is located at the light source opening of the dome light source to isolate dust. A second air pipe is located on the side of the glass protective cover to remove dust from it. This invention removes dust from the optical glass and paper fibers from the product surface through the first air pipe, and removes dust from the top surface of the glass protective cover through the second air pipe, thereby completely eliminating dust that affects inspection and ensuring the normal operation of the inspection process.

[0004] In actual production, the materials and shapes of objects vary greatly, and their placement also differs. For example, in the food packaging industry, packaging containers of different shapes and materials need to be inspected for the sealing of their reverse sides and the correctness of label affixing; in the pharmaceutical manufacturing field, the clarity and integrity of information on the reverse side of medicine bottles, boxes, and other packaging also face many challenges. For objects with uneven surfaces or complex reflective properties, conventional inspection methods are insufficient to obtain clear images.

[0005] Therefore, this utility model provides a machine vision reverse side detection device. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a machine vision reverse side inspection device to solve the aforementioned problems.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a machine vision reverse inspection device, including a worktable, a conveyor belt is provided inside the worktable, a gantry frame is fixedly connected to the top of the worktable, an inspection mechanism is installed on the top of the worktable, and an adjustment mechanism is provided on the outside of the inspection mechanism;

[0008] The testing facility includes a computer, with a connecting cable fixedly connected to the outside of the computer, a CCD camera fixedly connected to the outside of the connecting cable, and a light source disposed on the outside of the CCD camera.

[0009] The adjustment mechanism includes a rotating box, a connecting plate fixedly connected to the outside of the rotating box, a rotating rod rotatably connected between the connecting plates, and a connecting rod fixedly connected to the outside of the rotating rod.

[0010] Preferably, the bottom of the connecting rod is fixedly connected to the top of the light source body, a bidirectional motor is provided inside the operating box, a rotating shaft is fixedly connected to the output end of the bidirectional motor, a first gear is fixedly connected to the outside of the rotating shaft, and a second gear and a third gear are meshed on the outside of the first gear.

[0011] Preferably, the top of the gantry frame is provided with a moving mechanism, the moving mechanism includes a moving groove, the top of the gantry frame is provided with a slider, the bottom of the slider is fixedly connected with a sliding rod, the outer side of the slider is fixedly connected with an L-shaped plate, the outer side of the L-shaped plate is fixedly connected with a threaded tube, and the inner thread of the threaded tube is connected with a screw.

[0012] Preferably, the operating box is slidably connected to the bottom of the gantry frame, and the computer is electrically connected to the CCD camera via a connecting cable. The CCD camera acquires reverse image information, which is then transmitted to the computer via the connecting cable.

[0013] Preferably, the light source is movably connected to the outside of the CCD camera through the cooperation of a rotating rod and a connecting rod, and the light sources are symmetrically distributed on the outside of the CCD camera, so that the workpiece can be illuminated by the light source.

[0014] Preferably, the first gear is symmetrically distributed on the outside of the rotating box, and the second gear is connected to the outside of the rotating rod, with the two gears located at opposite ends. The rotating shaft is started by a bidirectional motor, which drives the first gear to rotate, and then the first gear drives the second gear to rotate.

[0015] Preferably, the slide bar is slidably connected inside the moving groove, and the bottom of the slide bar is fixedly connected to the top of the operating box. The slide bar moves on the top of the gantry by the slider, thereby driving the operating box to move.

[0016] Preferably, the L-shaped plates are symmetrically distributed on the outside of the slider, and the positioning cover is movably connected to the outside of the gantry frame by a screw. When the screw drives the positioning cover to move to the outside of the gantry frame, the slider can be fixed at the top of the gantry frame.

[0017] Beneficial effects

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] (1) This machine vision reverse side inspection device uses a CCD camera in the inspection mechanism, which has high image resolution and sensitivity, and can capture subtle features and defects on the reverse side of objects. The computer is electrically connected to the CCD camera through a connecting cable, and uses advanced image processing algorithms to analyze the acquired images. It can accurately identify defects, flaws and dimensional deviations on the reverse side of objects, ensuring the accuracy of the inspection results and effectively reducing the defect rate.

[0020] (2) In this machine vision reverse inspection device, the adjustment mechanism is driven by a bidirectional motor, which drives the first gear to rotate, thereby causing the second gear meshing with it to rotate, realizing the reverse rotation of the rotating rod. Finally, the angle of the light source is adjusted through the connecting rod. This design allows the light source to flexibly adjust the illumination angle according to the material, shape, and inspection requirements of the object, ensuring that the reverse side of the object receives uniform and appropriate illumination, improving image acquisition quality, and further enhancing inspection accuracy. For example, for objects with uneven surfaces or complex reflective properties, the angle of the light source can be adjusted to reduce interference factors such as reflection and shadow, making defects more clearly visible.

[0021] (2) In this machine vision reverse inspection device, the moving mechanism at the top of the gantry, through the threaded engagement of a screw and a threaded tube, drives the slider to slide within the moving groove, thereby causing the slide rod connected to the bottom of the slider, as well as the rotating box and inspection mechanism connected to the slide rod, to move as a whole. This design allows the inspection mechanism to flexibly adjust its position within the gantry range, enabling the inspection of objects in different positions. This increases the applicability of the device, making it suitable for inspecting objects of different sizes and placement positions. It eliminates the need for frequent equipment replacement or readjustment of the inspection system, thus improving the versatility and practicality of the equipment. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 This is a schematic diagram of the external structure of the testing mechanism of this utility model;

[0024] Figure 3 This is a schematic diagram of the inner and outer structures of the operating box of this utility model;

[0025] Figure 4This is a utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0026] In the diagram: 1. Workbench; 2. Conveyor belt; 3. Gantry frame; 4. Detection mechanism; 41. Computer; 42. Connecting cable; 43. CCD camera; 44. Light source; 5. Adjustment mechanism; 51. Rotating box; 52. Connecting plate; 53. Rotating rod; 54. Connecting rod; 55. Bidirectional motor; 56. Rotating shaft; 57. Gear No. 1; 58. Gear No. 2; 59. Gear No. 3; 6. Moving mechanism; 61. Moving groove; 62. Slider; 63. Sliding rod; 64. L-shaped plate; 65. Threaded pipe; 66. Screw; 67. Positioning cover. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-4 A machine vision reverse inspection device includes a worktable 1, a conveyor belt 2 inside the worktable 1, a gantry frame 3 fixedly connected to the top of the worktable 1, an inspection mechanism 4 installed on the top of the worktable 1, and an adjustment mechanism 5 on the outside of the inspection mechanism 4.

[0029] The testing unit 4 includes a computer 41, a connecting cable 42 is fixedly connected to the outside of the computer 41, a CCD camera 43 is fixedly connected to the outside of the connecting cable 42, and a light source 44 is provided on the outside of the CCD camera 43.

[0030] The adjustment mechanism 5 includes a rotating box 51, a connecting plate 52 fixedly connected to the outside of the rotating box 51, a rotating rod 53 rotatably connected between the connecting plates 52, and a connecting rod 54 fixedly connected to the outside of the rotating rod 53.

[0031] Furthermore: the bottom of the connecting rod 54 is fixedly connected to the top of the light source body 44, the inside of the operating box 51 is equipped with a bidirectional motor 55, the output end of the bidirectional motor 55 is fixedly connected to a rotating shaft 56, the outer side of the rotating shaft 56 is fixedly connected to a first gear 57, and the outer side of the first gear 57 is meshed with a second gear 58 and a third gear 59.

[0032] It should be noted that: the operating box 51 is slidably connected to the bottom of the gantry 3; the computer 41 is electrically connected to the CCD camera 43 through the connecting cable 42; the light source 44 is movably connected to the outside of the CCD camera 43 through the cooperation of the rotating rod 53 and the connecting rod 54; the light source 44 is symmetrically distributed on the outside of the CCD camera 43; the first gear 57 is symmetrically distributed on the outside of the operating box 51; the second gear 58 and the third gear 59 are respectively connected to the outside of the rotating rod 53, and the two are located at opposite ends.

[0033] Specifically: The reverse image information is acquired by the CCD camera 43 and then transmitted to the computer 41 via the connecting cable 42. The workpiece is illuminated by the light source 44. The bidirectional motor 55 is started, which causes the rotating shaft 56 to drive the first gear 57 to rotate, and then the first gear 57 drives the second gear 58 and the third gear 59 to rotate.

[0034] As a further improvement of this utility model, a moving mechanism 6 is provided on the top of the gantry frame 3. The moving mechanism 6 includes a moving groove 61. A slider 62 is provided on the top of the gantry frame 3. A sliding rod 63 is fixedly connected to the bottom of the slider 62. An L-shaped plate 64 is fixedly connected to the outside of the slider 62. A threaded tube 65 is fixedly connected to the outside of the L-shaped plate 64. A screw 66 is threadedly connected inside the threaded tube 65. A positioning cover 67 is fixedly connected to the outside of the screw 66.

[0035] Furthermore: the slide bar 63 is slidably connected inside the moving groove 61, and the bottom of the slide bar 63 is fixedly connected to the top of the operating box 51. The L-shaped plates 64 are symmetrically distributed on the outside of the slider 62, and the positioning cover 67 is movably connected to the outside of the gantry 3 through the screw 66.

[0036] It should be noted that: by moving the slider 62 on the top of the gantry 3, the slide rod 63 drives the operating box 51 to move. When the screw 66 drives the positioning cover 67 to move to the outside of the gantry 3, the slider 62 can be fixed on the top of the gantry 3.

[0037] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0038] Working principle: The conveyor belt 2 inside the workbench 1 starts to operate, transporting the object to be inspected to the inspection area below the gantry 3. The stable operation of the conveyor belt 2 ensures that the object can continuously and orderly enter the inspection range. The computer 41 in the inspection mechanism 4 is electrically connected to the CCD camera 43 through the connecting cable 42. When the object arrives at the inspection area, the CCD camera 43, with the illumination assistance of the light source 44, acquires an image of the reverse side of the object. The light source 44 provides stable and uniform illumination, ensuring that the CCD camera 43 can clearly capture the image details of the reverse side of the object. The acquired image data is transmitted to the computer 41 through the connecting cable 42. The computer 41 uses built-in image processing algorithms and programs to analyze and process the image to identify whether there are defects, flaws, dimensional deviations, or other problems on the reverse side of the object.

[0039] The operating box 51 in the adjustment mechanism 5 is equipped with a bidirectional motor 55. When the angle of the light source body 44 needs to be adjusted, the bidirectional motor 55 starts, and its output end drives the rotating shaft 56 to rotate. The first gear 57 on the outside of the rotating shaft 56 rotates accordingly. Since the first gear 57 is meshed with the second gear 58 and the third gear 59, the rotation of the first gear 57 will drive the second gear 58 and the third gear 59 to rotate. The second gear 58 and the third gear 59 are respectively connected to the outside of the rotating rod 53 and are located at opposite ends. Therefore, the two rotating rods 53 will rotate in opposite directions under the drive of the second gear 58 and the third gear 59. The connecting rod 54 fixedly connected to the outside of the rotating rod 53 will move with the rotation of the rotating rod 53. Since the bottom of the connecting rod 54 is fixedly connected to the top of the light source body 44, the light source body 44 will rotate around the rotating rod 53 under the cooperation of the rotating rod 53 and the connecting rod 54, thereby realizing the adjustment of the angle of the light source body 44 to adapt to different detection needs.

[0040] In the moving mechanism 6, by driving the screw 66 to rotate, the threaded engagement between the screw 66 and the threaded tube 65 causes the threaded tube 65 to move linearly along the screw 66. The threaded tube 65 is fixedly connected to the L-shaped plate 64, which is in turn fixedly connected to the slider 62. Therefore, the movement of the threaded tube 65 causes the slider 62 to slide on the moving groove 61 at the top of the gantry 3. The slide rod 63 at the bottom of the slider 62 moves together with the slider 62. The bottom of the slide rod 63 is fixedly connected to the top of the rotating box 51, which is also associated with the detection mechanism 4. Therefore, the detection mechanism 4 will change its position as the slide rod 63 and the rotating box 51 move, thereby realizing the detection of objects at different positions.

[0041] Through the coordinated work of the above components, this machine vision reverse side detection device can efficiently and accurately detect the reverse side of an object, and flexibly adjust the light source angle and detection position according to actual needs.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A machine vision reverse side inspection device, comprising a worktable (1), characterized in that: The workbench (1) is equipped with a conveyor belt (2) inside, a gantry frame (3) is fixedly connected to the top of the workbench (1), a detection mechanism (4) is installed on the top of the workbench (1), and an adjustment mechanism (5) is provided on the outside of the detection mechanism (4). The testing agency (4) includes a computer (41), a connecting cable (42) is fixedly connected to the outside of the computer (41), a CCD camera (43) is fixedly connected to the outside of the connecting cable (42), and a light source (44) is provided on the outside of the CCD camera (43). The adjustment mechanism (5) includes a rotating box (51), a connecting plate (52) is fixedly connected to the outside of the rotating box (51), a rotating rod (53) is rotatably connected between the connecting plates (52), and a connecting rod (54) is fixedly connected to the outside of the rotating rod (53). The bottom of the connecting rod (54) is fixedly connected to the top of the light source body (44). The inside of the operating box (51) is equipped with a bidirectional motor (55). The output end of the bidirectional motor (55) is fixedly connected to a rotating shaft (56). A first gear (57) is fixedly connected to the outside of the rotating shaft (56). A second gear (58) and a third gear (59) are meshed on the outside of the first gear (57).

2. The machine vision reverse side detection device according to claim 1, characterized in that: The top of the gantry (3) is provided with a moving mechanism (6), the moving mechanism (6) includes a moving groove (61), the top of the gantry (3) is provided with a slider (62), the bottom of the slider (62) is fixedly connected with a sliding rod (63), the outside of the slider (62) is fixedly connected with an L-shaped plate (64), the outside of the L-shaped plate (64) is fixedly connected with a threaded tube (65), the inside of the threaded tube (65) is threaded with a screw (66), and the outside of the screw (66) is fixedly connected with a positioning cover (67).

3. The machine vision reverse side detection device according to claim 1, characterized in that: The operating box (51) is slidably connected to the bottom of the gantry (3), and the computer (41) is electrically connected to the CCD camera (43) via a connecting cable (42).

4. The machine vision reverse side detection device according to claim 1, characterized in that: The light source (44) is movably connected to the outside of the CCD camera (43) through the cooperation of the rotating rod (53) and the connecting rod (54), and the light source (44) is symmetrically distributed on the outside of the CCD camera (43).

5. The machine vision reverse side inspection device according to claim 1, characterized in that: The first gear (57) is symmetrically distributed on the outside of the operating box (51), and the second gear (58) and the third gear (59) are respectively connected to the outside of the rotating rod (53), and the two are located at opposite ends.

6. The machine vision reverse side inspection device according to claim 2, characterized in that: The slide bar (63) is slidably connected inside the moving groove (61), and the bottom of the slide bar (63) is fixedly connected to the top of the operating box (51).

7. The machine vision reverse side inspection device according to claim 2, characterized in that: The L-shaped plates (64) are symmetrically distributed on the outside of the slider (62), and the positioning cover (67) is movably connected to the outside of the gantry (3) by the screw (66).

Images