An appearance inspection device based on machine vision processing

Abstract

This invention discloses a visual inspection device based on machine vision processing, belonging to the field of visual processing technology. To address the problem that machine vision-based visual inspection devices often struggle to perform integrated inspection of the bottle body and bottle mouth, resulting in complex equipment structures and high overall costs, the invention includes an inspection platform. A conveyor is mounted on top of the inspection platform, with several bottles evenly arranged on its top. A detection component is mounted on one side of the conveyor. A support frame is mounted on top of the inspection platform, and a drive component is mounted on the side wall of the support frame. The drive component has a lifting component and a rotating component at its two output ends, respectively. A conical guide component is mounted at the bottom of the rotating component. This invention guides the dynamic inspection component to move along a path and synchronously changes the inspection angle, eliminating the need for an additional angle adjustment mechanism. This adapts to the integrated inspection requirements from bottle mouth to bottle body, simplifying the equipment structure and reducing equipment investment costs.

Description

Technical Field

[0001] This invention relates to the field of visual processing technology, specifically to an appearance inspection device based on machine vision processing. Background Technology

[0002] Machine vision-based appearance inspection devices are inspection equipment that integrates industrial cameras, image acquisition modules, and visual algorithm processing units. They achieve automatic identification of product appearance defects through non-contact image acquisition and intelligent analysis. They are widely used in the production of food, pharmaceutical, and daily chemical packaging bottles. They are mainly used to conduct high-precision appearance inspections of defects such as scratches, bubbles, dents, deformations on the bottle body, and notches, burrs, and uneven end faces at the bottle mouth. Their detection accuracy is directly related to the sealing effect, assembly compatibility, and safety of use of the bottle. They are key automated equipment to ensure the quality of bottle products leaving the factory.

[0003] Current machine vision-based appearance inspection devices, when used to simultaneously inspect the bottle body and bottle mouth, typically require the deployment of multiple industrial cameras to respectively inspect the bottle body and bottle mouth areas, or the use of bottle rotation mechanisms and independent camera lifting and adjustment mechanisms to achieve step-by-step inspection of different parts. This results in complex equipment structures and high overall costs.

[0004] To address the above problems, a visual inspection device based on machine vision processing is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an appearance inspection device based on machine vision processing. By using this invention, the problem of appearance inspection devices based on machine vision processing in the above-mentioned background is that it is not easy to perform integrated inspection of the bottle body and bottle mouth, resulting in complicated equipment structure and high overall cost.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A visual inspection device based on machine vision processing includes an inspection table, a conveyor on the top of the inspection table, a plurality of bottles evenly arranged on the top of the conveyor, a detection component on one side of the conveyor, a support frame on the top of the inspection table, a drive component on the side wall of the support frame, a lifting component and a rotating component on the two output ends of the drive component, a conical guide component at the bottom of the rotating component, a correction component at the bottom of the drive component, a toggle component on the outer wall of the conical guide component, and a dynamic inspection component inside the conical guide component.

[0007] Furthermore, the detection component includes an L-shaped mounting plate fixedly connected to one side of the conveyor, and a photoelectric sensor is mounted on the top of the L-shaped mounting plate.

[0008] Furthermore, the drive assembly includes a support plate fixedly connected to one side of the support frame, a U-shaped limiting plate slidably connected inside the support plate, a lifting frame fixedly connected to the bottom of the U-shaped limiting plate, and a dual-axis motor installed on the top of the lifting frame.

[0009] Furthermore, the lifting assembly includes a threaded rod fixedly connected to the top output end of the dual-axis motor, the threaded rod being threadedly connected to the support plate, and a limit block being fixedly connected to one end of the threaded rod.

[0010] Furthermore, the rotating assembly includes a first rotating shaft fixedly connected to the bottom output end of the dual-axis motor, a turntable fixedly connected to one end of the first rotating shaft, and both the first rotating shaft and the turntable are rotatably connected to the lifting frame.

[0011] Furthermore, the conical guide assembly includes a conical cylinder fixedly connected to the bottom of the turntable, and the inner wall of the conical cylinder is provided with a T-shaped spiral groove.

[0012] Furthermore, the T-shaped spiral groove gradually changes from vertical to horizontal angle from top to bottom.

[0013] Furthermore, the bottom of the correction component is fixedly connected to two connecting plates, and the bottom of the two connecting plates is fixedly connected to a limiting ring. The limiting ring is coaxially arranged with the conical cylinder. Four connecting shafts are evenly fixedly connected inside the limiting ring. Gears are rotatably connected to the outer walls of the four connecting shafts. Correction plates are fixedly connected to the outer walls of the gears. Four arc-shaped rods are rotatably connected inside the limiting ring. Toothed plates are connected to both ends of the four arc-shaped rods. The four gears mesh with the four toothed plates.

[0014] Furthermore, the actuating assembly includes an L-shaped push rod fixedly connected to the outer wall of the conical cylinder, wherein a driven block is fixedly connected to the outer wall of one of the toothed plates.

[0015] Furthermore, the dynamic inspection component includes four rollers that are relatively rolled together on both sides of the T-shaped spiral groove. One end of each roller is rotatably connected to a movable seat. Two support blocks are arranged parallel to each side of the movable seat. A sidewall guide wheel is rotatably connected to one side of each support block. The sidewall guide wheel is rolled together with the inner wall of the T-shaped spiral groove. A servo motor is installed inside the movable seat. A second rotating shaft is fixedly connected to the output end of the servo motor. A friction wheel is connected to one end of the second rotating shaft. The friction wheel is in close contact with the inner wall of the T-shaped spiral groove. A vision camera is installed on one side of the movable seat.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the cooperation of the drive component, the conical guide component, the correction component and the toggle component, the correction structure can be pushed to retract synchronously to correct the positioning of the bottle, ensuring that the bottle is in the center position, avoiding the problems of detection angle distortion and incomplete imaging caused by offset and skew, and ensuring the accuracy of the detection benchmark; By setting the spiral structure inside the conical guide component, the dynamic inspection component can be guided to move along the path and the inspection angle can be changed synchronously. No additional angle adjustment mechanism is needed, which can adapt to the integrated inspection requirements from bottle mouth to bottle body, simplify the equipment structure and reduce equipment investment costs. By coordinating the dynamic inspection component and the conical guide component, a single unit can complete multi-angle, full-coverage appearance inspection of the bottle, replacing multi-camera step-by-step inspection and improving inspection continuity and efficiency. Through the cooperation between the drive component and the tapered guide component, the spiral groove can be rotated 180 degrees to form a misaligned re-inspection path, enabling the dynamic inspection component to reverse and change angle for re-inspection, effectively compensating for the gaps in the spiral track inspection, reducing the omission of minor defects, and further improving the inspection accuracy and reliability. Through the coordination of the drive components, lifting components and various execution components, the cycle of correction, detection and reset can be completed, quickly releasing the bottle positioning and freeing up the detection station, ensuring the continuous operation of the inspection process, adapting to large-scale bottle production, and reducing labor and equipment maintenance costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural diagram of the present invention; Figure 3 This is a partial cross-sectional structural diagram of the present invention; Figure 4 for Figure 3 Enlarged view of point A; Figure 5 for Figure 4 Enlarged view of point B; Figure 6 This is a schematic diagram showing the connection relationship between the rotating component, the tapered guide component, the correction component, and the actuating component of the present invention. Figure 7 This is a cross-sectional structural diagram showing the connection relationship between the tapered guide assembly and the dynamic inspection assembly of the present invention; Figure 8 This is a cross-sectional structural diagram showing the connection relationship between the correction component and the toggle component of the present invention.

[0018] In the diagram: 1. Inspection table; 2. Conveyor; 3. Bottle body; 4. Detection assembly; 41. L-shaped mounting plate; 42. Photoelectric sensor; 5. Support frame; 6. Drive assembly; 61. Support plate; 62. U-shaped limit plate; 63. Lifting frame; 64. Dual-axis motor; 7. Lifting assembly; 71. Threaded rod; 72. Limit block; 8. Rotating assembly; 81. First rotating shaft; 82. Turntable; 9. Conical guide assembly; 91. Conical cylinder; 92. T-shaped spiral groove; 10. Correction... Offset assembly; 101, connecting plate; 102, limiting ring; 103, connecting shaft; 104, correction plate; 105, gear; 106, toothed plate; 107, arc rod; 20, actuating assembly; 201, L-shaped push rod; 202, driven block; 30, dynamic inspection assembly; 301, roller; 302, moving seat; 303, support block; 304, side wall guide wheel; 305, servo motor; 306, second rotating shaft; 307, friction wheel; 308, vision camera. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] To address the technical challenge of easily correcting the deviation of bottle 3 before visual inspection, such as... Figures 1-6 and Figure 8 As shown, the following preferred technical solutions are provided: A visual inspection device based on machine vision processing includes an inspection table 1, which supports and fixes various components. A controller is installed on one side of the inspection table 1 to control the electrical components. A display screen is installed on the top of the inspection table 1 to display the visual inspection results of the bottles 3, the operating parameters of each component, and fault prompts in real time, facilitating real-time monitoring of the inspection process and viewing of inspection data by the operator. The controller and display screen are existing technologies and are not shown in the figure. A conveyor 2 is installed on the top of the inspection table 1, with several bottles 3 evenly arranged on its top. The conveyor 2 can smoothly transport the bottles 3 at a preset speed, achieving continuous and orderly feeding of the bottles 3. A detection component 4 is installed on one side of the conveyor 2, which can detect the position of the bottles 3 transported on the conveyor 2, identify whether the bottles 3 have reached the preset detection station, and feed the detection signal back to the controller. A support frame 5 is installed on the top of the inspection table 1, and a drive component 6 is installed on the side wall of the support frame 5. Figure 3As shown, the two output ends of the drive assembly 6 are respectively equipped with a lifting assembly 7 and a rotating assembly 8. The bottom of the rotating assembly 8 is equipped with a conical guide assembly 9, and the bottom of the drive assembly 6 is equipped with a correction assembly 10. The outer wall of the conical guide assembly 9 is equipped with a toggle assembly 20. By pushing the correction assembly 10 to move through the toggle assembly 20, the bottle body 3 can be positioned and corrected around the perimeter after it reaches the detection station, so that the bottle body 3 is in the center of the conical guide assembly 9, thus avoiding the bottle body 3 from shifting and affecting the detection accuracy.

[0021] In use, several bottles 3 to be inspected are placed evenly on top of conveyor 2 by an external automatic feeding mechanism and transported by conveyor 2, thereby realizing continuous automatic feeding of bottles 3. This can replace manual feeding, reduce manual operation errors, improve the automation level of the inspection process, ensure the orderly transport of bottles 3, and lay the foundation for subsequent accurate detection. When the detection component 4 detects that the conveyor 2 has transported the bottle 3 to directly below the conical guide component 9, i.e. the preset detection station, the controller stops the conveyor 2. Then, the drive component 6 drives the lifting component 7 to rotate, so that the conical guide component 9, the correction component 10 and the actuation component 20 descend synchronously, so that the conical guide component 9 covers the bottle 3 inside.

[0022] Then, the controller causes the drive component 6 to drive the rotating component 8 to rotate clockwise, which in turn drives the conical guide component 9 and the actuating component 20 to rotate clockwise simultaneously. This causes the actuating component 20 to push the four correction structures inside the correction component 10 to retract synchronously, positioning and correcting the bottle body 3 around its perimeter. This ensures that the bottle body 3 is in the exact center of the conical guide component 9, avoiding lateral offset and skew caused by the bottle body 3 during transport by the conveyor 2. This prevents subsequent problems such as shifted detection angle, image distortion, and incomplete detection. It enables fast and accurate correction of the bottle body 3, preventing the offset of the bottle body 3 from affecting the accuracy of subsequent detection. At the same time, the structure is simple and easy to operate.

[0023] The tapered guide component 9 contains a dynamic inspection component 30. The tapered guide component 9 has a spiral structure that adapts to the movement of the dynamic inspection component 30, thereby forming a detection motion path. This provides a stable motion trajectory support for the dynamic inspection component 30 to achieve rotational angle detection, adapting to the integrated detection requirements of the bottle body and bottle mouth. By moving the dynamic inspection component 30 along the spiral path inside the tapered guide component 9 and simultaneously adjusting the inspection angle, full coverage and high-precision inspection of the bottle body 3's appearance can be achieved.

[0024] After positioning and correcting the bottle body 3 around its perimeter, the controller causes the dynamic inspection component 30 to move spirally downwards along the spiral structure within the conical guide component 9. Simultaneously, the inspection angle gradually changes from a vertical irradiation direction to a horizontal irradiation direction, thus achieving integrated circumferential and top-level full-coverage inspection of the bottle body 3 from the bottle mouth to the bottle body. Compared to existing technologies using multi-camera step-by-step inspection or fixed-angle inspection, a single set of dynamic inspection components 30 can complete multi-part and multi-angle inspections, reducing equipment investment, lowering inspection costs, and improving inspection continuity. The controller then drives the... Component 6 drives the rotating assembly 8 to rotate 180 degrees counterclockwise, causing the conical guide assembly 9 to rotate 180 degrees counterclockwise simultaneously. This changes the position path of the dynamic inspection component 30 within the conical guide assembly 9, creating a new, misaligned inspection path. Subsequently, the controller causes the dynamic inspection component 30 to spiral upwards along the new inspection path within the conical guide assembly 9 to reset, thereby achieving a reverse angle re-inspection of the bottle body 3 from the bottle neck. Compared to the existing unidirectional, single-time inspection technology, this effectively reduces the inspection gap caused by the spiral track spacing, reduces the missed detection of minor defects, and further improves inspection accuracy and reliability.

[0025] After inspection, the controller causes the drive assembly 6 to rotate the rotating assembly 8 counterclockwise again, which in turn causes the conical guide assembly 9 and the actuating assembly 20 to rotate counterclockwise synchronously. This causes the actuating assembly 20 to push the four correction structures inside the correction assembly 10 to retract and reset synchronously. Then, the controller causes the drive assembly 6 to rotate the lifting assembly 7, which causes the conical guide assembly 9, the correction assembly 10, and the actuating assembly 20 to rise and reset synchronously. This releases the positioning of the bottle 3 and frees up a workstation for the next bottle 3 to be inspected, ensuring the continuous operation of the inspection process.

[0026] like Figure 2 and Figure 3 As shown, the detection component 4 includes an L-shaped mounting plate 41 fixedly connected to one side of the conveyor 2. A photoelectric sensor 42 is mounted on the top of the L-shaped mounting plate 41. The photoelectric sensor 42 is an industrial-grade diffuse reflection photoelectric sensor 42, which can accurately detect the position of the bottle 3 on the conveyor 2 in a non-contact manner, identify whether the bottle 3 has reached the preset detection station, and feed back the arrival signal to the controller in real time to trigger the conveyor 2 to stop and perform subsequent detection actions, thus adapting to the detection requirements of continuous conveying of the bottle 3.

[0027] like Figures 3-5As shown, the drive assembly 6 includes a support plate 61 fixedly connected to one side of the support frame 5. A U-shaped limiting plate 62 is slidably connected inside the support plate 61. A lifting frame 63 is fixedly connected to the bottom of the U-shaped limiting plate 62. A dual-axis motor 64 is installed on the top of the lifting frame 63. The dual-axis motor 64 is a high-precision servo dual-axis motor 64, which has two independent drive units built in it. It can control the two output ends to rotate independently. The dual-axis motor 64 has a self-locking function.

[0028] like Figure 3 As shown, the lifting assembly 7 includes a threaded rod 71 fixedly connected to the top output end of the dual-axis motor 64. The threaded rod 71 is threadedly connected to the support plate 61, and a limit block 72 is fixedly connected to one end of the threaded rod 71.

[0029] like Figures 4-6 As shown, the rotating assembly 8 includes a first rotating shaft 81 fixedly connected to the bottom output end of the dual-axis motor 64. One end of the first rotating shaft 81 is fixedly connected to a turntable 82. Both the first rotating shaft 81 and the turntable 82 are rotatably connected to the lifting frame 63.

[0030] like Figures 4-6 As shown, the conical guide assembly 9 includes a conical cylinder 91 fixedly connected to the bottom of the turntable 82, and a T-shaped spiral groove 92 is provided on the inner wall of the conical cylinder 91.

[0031] like Figure 4 As shown, the T-shaped spiral groove 92 gradually changes from vertical to horizontal from top to bottom. This allows the dynamic inspection component 30 to move along the spiral path while simultaneously changing the inspection angle from the vertical irradiation direction to the horizontal irradiation direction, i.e., from the vertical bottle mouth to the horizontal bottle body. This eliminates the need for an additional angle adjustment mechanism and can adapt to the integrated inspection requirements from the bottle mouth to the bottle body of the bottle 3.

[0032] like Figure 4 , Figure 6 and Figure 8 As shown, the bottom of the correction assembly 10 is fixedly connected to two connecting plates 101. The bottom of the two connecting plates 101 is fixedly connected to a limiting ring 102. The limiting ring 102 is coaxially arranged with the conical cylinder 91. Four connecting shafts 103 are evenly fixedly connected inside the limiting ring 102. Gears 105 are rotatably connected to the outer walls of the four connecting shafts 103. Correction plates 104 are fixedly connected to the outer walls of the gears 105. Four arc-shaped rods 107 are rotatably connected inside the limiting ring 102. Toothed plates 106 are connected to both ends of the four arc-shaped rods 107. The four gears 105 mesh with the four toothed plates 106. The above four correction structures are four correction plates 104.

[0033] like Figure 6 and Figure 8 As shown, the actuating assembly 20 includes an L-shaped push rod 201 fixedly connected to the outer wall of the conical cylinder 91, and a driven block 202 fixedly connected to the outer wall of one of the toothed plates 106.

[0034] In use, several bottles 3 to be inspected are placed evenly on top of conveyor 2 by an external automatic feeding mechanism and transported by conveyor 2, thereby realizing continuous automatic feeding of bottles 3. This can replace manual feeding, reduce manual operation errors, improve the automation level of the inspection process, ensure the orderly transport of bottles 3, and lay the foundation for subsequent accurate detection. When photoelectric sensor 42 detects that conveyor 2 has transported bottles 3 to directly below conical cylinder 91, i.e., the preset detection station, the controller stops conveyor 2. Then, the dual-axis motor 64 drives the threaded rod 71 to rotate. Through the threaded connection between threaded rod 71 and support plate 61, the lifting frame 63, under the limit of U-shaped limit plate 62, drives conical cylinder 91, connecting plate 101, limit ring 102 and L-shaped push rod 201 to descend synchronously, so that conical cylinder 91 covers bottles 3 inside.

[0035] Then, via the controller, the dual-axis motor 64 drives the first rotating shaft 81 and the turntable 82 to rotate clockwise, causing the conical cylinder 91 and the L-shaped push rod 201 to rotate clockwise synchronously. This causes the L-shaped push rod 201 to push the driven block 202, which in turn drives one of the toothed plates 106 to rotate. Since the four toothed plates 106 are connected end-to-end to the four arc-shaped rods 107, the toothed plates 106 and the four arc-shaped rods 107 can rotate synchronously within the limiting ring 102. Furthermore, through the meshing of the four gears 105 with the four toothed plates 106, the rotation is synchronized... The step drives the gear 105 to rotate on the outer wall of the connecting shaft 103, causing the four correction plates 104 to retract synchronously, positioning and correcting the bottle body 3 around its perimeter. This ensures that the bottle body 3 is in the exact center of the conical cylinder 91, preventing lateral shifts and tilts of the bottle body 3 during transport by the conveyor 2, which could lead to subsequent problems such as shifted inspection view, image distortion, and incomplete detection. This method enables rapid and accurate correction of the bottle body 3, preventing its shift from affecting subsequent detection accuracy. It also features a simple structure and convenient operation.

[0036] To address the technical problem that machine vision-based appearance inspection devices often struggle to perform integrated inspection of the bottle body and bottle opening, resulting in complex equipment structures and high overall costs, such as... Figure 4 and Figure 7 As shown, the following preferred technical solutions are provided: like Figure 7As shown, the dynamic inspection component 30 includes four rollers 301 that are relatively rolled on both sides of the T-shaped spiral groove 92. One end of each roller 301 is rotatably connected to a movable seat 302. The four rollers 301 are connected to the movable seat 302 via universal joints, which can adaptively match the changes in the spiral angle and conical curvature of the T-shaped spiral groove 92, ensuring that the rollers 301 always roll in close contact with the groove wall, avoiding suspension, jamming, or derailment. This ensures that the movable seat 302 moves more smoothly and stably along the spiral path. Two support blocks 303 are arranged parallel to each other on both sides of the movable seat 302. A sidewall guide wheel 304 is rotatably connected to one side of each support block 303, and the sidewall guide wheel 304 is rolled in connection with the inner wall of the T-shaped spiral groove 92. A servo motor 305 is installed inside the movable base 302. The output end of the servo motor 305 is fixedly connected to a second rotating shaft 306. One end of the second rotating shaft 306 is connected to a friction wheel 307. The friction wheel 307 is connected to the second rotating shaft 306 through a universal joint, which can adaptively compensate for the gradual deviation of the inclination angle of the T-shaped spiral groove 92, and always keep the friction wheel 307 in a perpendicular and close contact with the groove wall, preventing transmission slippage, deviation or jamming. The friction wheel 307 is made of high wear-resistant polyurethane rubber, which can improve the frictional adhesion between it and the groove wall, ensure the stable and reliable driving force of the spiral drive, reduce operating noise, and reduce wear on the inner wall of the T-shaped spiral groove 92. The friction wheel 307 is in close contact with the inner wall of the T-shaped spiral groove 92.

[0037] A vision camera 308 is installed on one side of the movable base 302. The vision camera 308 can acquire real-time images of the bottle body and bottle mouth of the bottle 3, and transmit the images to the controller for defect analysis to identify appearance defects such as scratches, gaps, and deformation. A ring-shaped LED supplementary light source is set on one side of the vision camera 308, which can provide uniform and stable illumination during inspection, avoid the cone-shaped cylinder 91 blocking the light and causing shadows, prevent image distortion, and ensure inspection accuracy. A long strip of conductive slider is set in the T-shaped spiral groove 92, and an elastic conductive brush is set in the movable base 302. The conductive brush and the conductive slider maintain continuous sliding contact, which can realize stable and uninterrupted power supply to the servo motor 305, vision camera 308 and ring-shaped LED supplementary light source, and avoid cable tangling and pulling. The universal joint, the long strip of conductive slider and the elastic conductive brush are all existing technologies and are not shown in the figure.

[0038] After positioning and correcting the bottle body 3 around its perimeter, the controller causes the servo motor 305 to drive the second rotating shaft 306 to rotate, causing the friction wheel 307 to rotate synchronously. Through the tight contact between the friction wheel 307 and the inner wall of the T-shaped spiral groove 92, the moving seat 302 drives the vision camera 308 to move spirally downwards along the spiral structure under the rolling limit of the roller 301 and the side wall guide wheel 304. Simultaneously, the inspection angle gradually changes from a vertical irradiation direction directly facing the top of the bottle opening to an irradiation direction horizontal to the bottle body. This achieves integrated circumferential and top-coverage dynamic inspection of the bottle body 3 from the bottle opening to the bottle body by the vision camera 308. Compared to the existing multi-camera step-by-step inspection or fixed-angle inspection, this method can complete multi-part and multi-angle dynamic inspection with a single set of dynamic inspection components 30, reducing equipment requirements. This process reduces testing costs and improves testing continuity. Then, via a controller, the dual-axis motor 64 drives the first rotating shaft 81 and the turntable 82 to rotate counterclockwise by 180 degrees, causing the conical cylinder 91 to rotate counterclockwise by 180 degrees simultaneously. This changes the position of the T-shaped spiral groove 92 within the conical cylinder 91, creating a new, misaligned testing path. At this point, the limiting ring 102 and the bottle body 3 remain in the same position. Subsequently, via the controller, the moving seat 302 drives the vision camera 308 to spiral upwards along the new testing path within the conical cylinder 91 to reset. This achieves a reverse angle re-inspection of the bottle body 3 from the bottle opening to the bottle neck. Compared to the existing unidirectional, single-pass testing technology, this effectively reduces the testing gaps caused by the spiral track spacing, reduces missed detections of minor defects, and further improves testing accuracy and reliability.

[0039] After inspection, the controller causes the dual-axis motor 64 to drive the first rotating shaft 81 and the turntable 82 to rotate counterclockwise again, which in turn drives the T-shaped spiral groove 92 and the L-shaped push rod 201 to rotate counterclockwise synchronously. This causes the L-shaped push rod 201 to push the driven block 202 to move in the opposite direction, causing the four correction plates 104 inside the limit ring 102 to retract and reset synchronously. Then, the controller causes the dual-axis motor 64 to drive the threaded rod 71 to rotate, and through the threaded connection between the threaded rod 71 and the support plate 61, the lifting frame 63, under the limit of the U-shaped limit plate 62, drives the conical cylinder 91, the connecting plate 101, the limit ring 102 and the L-shaped push rod 201 to rise and reset synchronously. This releases the positioning of the bottle 3 and frees up a workstation for the inspection of the next bottle 3, ensuring the continuous operation of the inspection process.

[0040] By repeating the above operations, continuous automated and high-precision appearance inspection of bottle 3 can be achieved, completing the integrated inspection and secondary re-inspection of the bottle body and bottle mouth of bottle 3. Compared with the problems of low inspection efficiency, high rate of missed and false detection and complex equipment structure of existing technologies, it can improve inspection efficiency and inspection accuracy, reduce labor costs and equipment investment, adapt to the inspection needs of large-scale bottle 3 production, and is convenient to operate and stable in operation.

[0041] 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.

[0042] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A visual inspection device based on machine vision processing, comprising an inspection table (1), characterized in that: The inspection platform (1) is equipped with a conveyor (2) on top, and several bottles (3) are evenly arranged on the top of the conveyor (2). A detection component (4) is arranged on one side of the conveyor (2). A support frame (5) is arranged on the top of the inspection platform (1). A drive component (6) is arranged on the side wall of the support frame (5). A lifting component (7) and a rotating component (8) are respectively arranged at the two output ends of the drive component (6). A conical guide component (9) is arranged at the bottom of the rotating component (8). A correction component (10) is arranged at the bottom of the drive component (6). A toggle component (20) is arranged on the outer wall of the conical guide component (9). A dynamic inspection component (30) is arranged inside the conical guide component (9).

2. The appearance inspection device based on machine vision processing according to claim 1, characterized in that: The detection component (4) includes an L-shaped mounting plate (41) fixedly connected to one side of the conveyor (2), and a photoelectric sensor (42) is mounted on the top of the L-shaped mounting plate (41).

3. The appearance inspection device based on machine vision processing according to claim 1, characterized in that: The drive assembly (6) includes a support plate (61) fixedly connected to one side of the support frame (5), a U-shaped limiting plate (62) slidably connected inside the support plate (61), a lifting frame (63) fixedly connected to the bottom of the U-shaped limiting plate (62), and a dual-axis motor (64) installed on the top of the lifting frame (63).

4. The appearance inspection device based on machine vision processing according to claim 3, characterized in that: The lifting assembly (7) includes a threaded rod (71) fixedly connected to the top output end of the dual-axis motor (64). The threaded rod (71) is threadedly connected to the support plate (61), and a limit block (72) is fixedly connected to one end of the threaded rod (71).

5. The appearance inspection device based on machine vision processing according to claim 3, characterized in that: The rotating assembly (8) includes a first rotating shaft (81) fixedly connected to the bottom output end of the dual-axis motor (64), and a turntable (82) fixedly connected to one end of the first rotating shaft (81). Both the first rotating shaft (81) and the turntable (82) are rotatably connected to the lifting frame (63).

6. The appearance inspection device based on machine vision processing according to claim 5, characterized in that: The conical guide assembly (9) includes a conical cylinder (91) fixedly connected to the bottom of the turntable (82), and a T-shaped spiral groove (92) is provided on the inner wall of the conical cylinder (91).

7. The appearance inspection device based on machine vision processing according to claim 6, characterized in that: The T-shaped spiral groove (92) gradually changes from vertical to horizontal in spiral angle from top to bottom.

8. The appearance inspection device based on machine vision processing according to claim 6, characterized in that: The bottom of the correction component (10) is fixedly connected to two connecting plates (101). The bottom of the two connecting plates (101) is fixedly connected to a limiting ring (102). The limiting ring (102) is coaxially arranged with the conical cylinder (91). Four connecting shafts (103) are evenly fixedly connected inside the limiting ring (102). Gears (105) are rotatably connected to the outer walls of the four connecting shafts (103). Correction plates (104) are fixedly connected to the outer walls of the gears (105). Four arc rods (107) are rotatably connected inside the limiting ring (102). Tooth plates (106) are connected to both ends of the four arc rods (107). The four gears (105) mesh with the four tooth plates (106).

9. The appearance inspection device based on machine vision processing according to claim 8, characterized in that: The actuating assembly (20) includes an L-shaped push rod (201) fixedly connected to the outer wall of the conical cylinder (91), and a driven block (202) is fixedly connected to the outer wall of one of the toothed plates (106).

10. The appearance inspection device based on machine vision processing according to claim 9, characterized in that: The dynamic inspection component (30) includes four rollers (301) that are relatively rolled on both sides of the T-shaped spiral groove (92). One end of each roller (301) is rotatably connected to a movable seat (302). Two support blocks (303) are arranged parallel to each other on both sides of the movable seat (302). A side wall guide wheel (304) is rotatably connected to one side of each support block (303). The side wall guide wheel (304) is rolled in connection with the inner wall of the T-shaped spiral groove (92). A servo motor (305) is installed inside the movable seat (302). A second rotating shaft (306) is fixedly connected to the output end of the servo motor (305). A friction wheel (307) is connected to one end of the second rotating shaft (306). The friction wheel (307) is tightly fitted to the inner wall of the T-shaped spiral groove (92). A vision camera (308) is installed on one side of the movable seat (302).

Images