A fast dynamic machine vision mounting mechanism based on four-lens image inspection machine

Abstract

The application relates to a quick dynamic machine vision mounting mechanism based on a four-lens image inspection machine and relates to the technical field of visual inspection. The mounting mechanism comprises a workbench and a rotating disc, the surface of the workbench is provided with the rotating disc and an adjusting seat, the adjusting seat is internally provided with an adjusting assembly, two moving seats are symmetrically and slidably arranged on the side wall of the adjusting seat, a limiting seat is fixed on the surface of the moving seat, a buffer assembly is arranged in the moving seat, a fixing seat is slidably arranged in the limiting seat, a fixing rod is fixed in the fixing seat, and a lens seat is arranged at the end of the fixing rod. Through the adjusting seat, the fixing rod, the lens seat and the adjusting assembly, the synchronous linkage adjustment of the positions and angles of the four lenses is realized, the debugging operation process is simplified, the manual calibration time is saved, the equipment debugging efficiency and the production line changing speed are improved, the mechanical vibration is weakened through the buffer assembly, and the vibration of the production line is blocked from the source to the lens mounting part.

Description

Technical Field

[0001] The present invention relates to the field of visual detection technology, in particular to a rapid dynamic machine vision mounting mechanism based on a four-lens image sorting machine. Background Art

[0002] Against the background of in-depth integration of industrial automation and intelligent manufacturing, machine vision, as a core sensing technology, has become a key support for scenarios such as precision quality inspection and high-speed sorting. With the continuous upgrading of requirements for detection efficiency and accuracy in industries such as 3C electronics, precision hardware, and food processing, traditional single-lens vision systems are difficult to meet the requirements of 360° full-view, micron-level defect detection due to problems such as limited field of view, multiple blind areas, and poor adaptability. Therefore, multi-lens, especially four-lens image sorting machines have gradually become the mainstream in the industry. Blind areas are eliminated through multi-view imaging, which greatly improves the comprehensiveness and accuracy of detection. The four lenses are distributed according to a specific spatial angle: the top lens is responsible for detecting the upper surface, the bottom lens captures the characteristics of the lower surface, and the lenses on both sides collect the side contours of the workpiece respectively, forming 360° full-dimensional visual coverage to achieve accurate capturing under dynamic working conditions.

[0003] Specifically, during the processing and production of popsicle stick wood blanks, relying on the rapid dynamic machine vision mounting mechanism supporting the four-lens image sorting machine, it can efficiently screen appearance defects such as cracks, burrs, edge defects and bending of the wood sticks, and realize online quality inspection in the assembly line. However, the four detection lenses of existing equipment mostly adopt an independent split mounting structure. When replacing popsicle sticks of different specifications or performing routine calibration of the equipment, workers need to fine-tune the position of each lens individually, making the adjustment process scattered and tedious. In addition, during the operation of the popsicle stick cutting, grinding and conveying production line, the mechanical vibration is relatively large, and continuous vibration is easily transmitted to the lens mounting position. Long-term operation easily causes lens position deviation, leading to blurred imaging and misaligned shooting angles, which increases the probability of missed and false defect detection.

[0004] In view of the above problems, it is urgent to carry out innovative design on the basis of the original. Summary of the Invention

[0005] The purpose of the present invention is to provide a rapid dynamic machine vision mounting mechanism based on a four-lens image sorting machine, so as to solve the problems of scattered and tedious separate fine-tuning of lens positions and the influence of vibration transmission on imaging proposed in the above background art. The technical solution of the present invention provides a solution that is significantly different from the prior art, aiming at solving the technical problem that the existing technical solution is too single.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rapid dynamic machine vision mounting mechanism based on a four-lens image inspection machine, comprising a worktable and a rotating disk, wherein the worktable surface is provided with a rotating disk and an adjustment seat, the adjustment seat is provided with an adjustment component, two movable seats are symmetrically slidably mounted on the side wall of the adjustment seat, a limit seat is fixed on the surface of each movable seat, a buffer component is provided inside the movable seat, a fixed seat is slidably mounted inside each limit seat, a fixed rod is fixed inside the fixed seat, and a lens mount is provided at the end of the fixed rod; The adjustment assembly can drive the two fixed seats to slide along the vertical length of the adjustment seats, so as to drive the lenses on the two lens mounts to move relative to each other or towards each other through the fixed rod; The buffer assembly can neutralize the vibrations generated by the swinging of the fixed rod.

[0007] Preferably, the adjustment assembly includes a rotating block rotatably mounted in the adjustment seat, with movable connecting rods rotatably mounted at both ends of the rotating block, a first oil tank disposed in the adjustment seat, and a second oil tank disposed on the surface of the lens mount. A first piston rod is slidably mounted in the first oil tank, and a second piston rod is slidably mounted in the second oil tank. The assembly also includes a limiting block fixed to the surface of the lens mount, with a sliding block slidably positioned within the limiting block. An adjustment connecting rod is rotatably mounted on the side wall of the sliding block. Finally, the assembly includes a rotating plate rotatably mounted on the surface of the lens mount.

[0008] Preferably, the rotating block is externally connected to a motor, the end of the moving connecting rod is rotatably connected to the moving seat, and the adjusting seat has an movable groove for the moving seat to move.

[0009] Preferably, the first oil tank and the second oil tank are filled with oil, and the first oil tank and the second oil tank are connected by a hose.

[0010] Preferably, the end of the first piston rod is in close contact with the side wall of the rotating block, and the end of the second piston rod is in close contact with the side wall of the sliding block.

[0011] Preferably, the end of the adjusting link is rotatably connected to the rotating plate.

[0012] Preferably, the buffer assembly includes a sliding plate slidably mounted in the movable seat, and adjusting blocks symmetrically slidably mounted on both sides of the movable seat. The adjusting blocks have movable blocks fixed to their side walls, and also include a plurality of extrusion grooves symmetrically formed on the inner wall of the adjusting seat.

[0013] Preferably, the sidewall of the adjusting block is inclined and is in close contact with the bottom of the sliding plate.

[0014] Preferably, the surface of the sliding plate is provided with a buffer spring, and the sliding plate is connected to the fixed base through the buffer spring.

[0015] Preferably, the inner wall of the extrusion groove is inclined, and the side wall of the moving block is in close contact with the inner wall of the extrusion groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the setting of an adjustment seat, a fixed rod, a lens mount, and an adjustment component, utilizes a motor-driven control adjustment component to achieve synchronous linkage adjustment of the position and angle of four lenses, simplifying the debugging operation process, adapting to the production and testing needs of different specifications of popsicle sticks, saving manual calibration time, improving equipment debugging efficiency and production line changeover speed. At the same time, by adjusting the compression amplitude and buffering force effect of the buffer spring through the extrusion groove, adjustment block, and moving block, it adapts to the vibration differences experienced by the moving seat at different positions, preventing the lenses from shifting due to vibration.

[0017] 2. This invention, through the inclusion of a buffer component, weakens the mechanical vibration transmitted from the movable seat to the fixed seat, blocking the transmission of production line vibration to the lens mounting area at the source. Simultaneously, the adjusting component adapts to the displacement changes of the movable seat, adaptively adjusting the compression amplitude of the buffer spring to match the required buffering and shock absorption strength at different positions. When the movable seat moves the fixed seat closer to the center position, and the vibration increases due to the change in the angle of the moving link, the adjusting component strengthens the buffering effect of the buffer spring, preventing lens displacement, loosening, and positional shift caused by production line vibrations. This maintains a stable lens shooting posture, ensuring stable and accurate visual inspection imaging of the popsicle stick, and improving equipment operational stability and long-term inspection accuracy. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the adjustment seat, fixing rod, and lens mount of the present invention; Figure 3 This is a schematic diagram of the structure of the adjusting seat of the present invention; Figure 4 This is a cross-sectional view of the adjusting seat of the present invention; Figure 5 This is a schematic diagram of the structure of some of the adjustment components of the present invention; Figure 6 This is a schematic diagram of another part of the adjustment component structure of the present invention; Figure 7 This is a schematic diagram of the structure of the movable seat, the limiting seat, and the fixed seat of the present invention; Figure 8 This is a cross-sectional structural diagram of the movable seat and the limiting seat of the present invention; Figure 9 This is a partial cross-sectional view of the present invention.

[0019] In the diagram: 1. Workbench; 101. Rotary disk; 2. Adjusting seat; 201. Extrusion groove; 202. Movable groove; 3. Rotating block; 301. Moving connecting rod; 302. Moving seat; 303. Limiting seat; 4. Fixed seat; 5. Sliding plate; 501. Buffer spring; 502. Adjusting block; 503. Moving block; 6. Fixed rod; 601. Lens mount; 602. Limiting block; 7. First oil tank; 701. First piston rod; 702. Second oil tank; 703. Second piston rod; 8. Rotating plate; 801. Adjusting connecting rod; 802. Sliding block. Detailed Implementation

[0020] Please see Figures 1-9 This invention provides a technical solution: a fast dynamic machine vision mounting mechanism based on a four-lens image inspection machine, including a worktable 1 and a rotating disk 101. The surface of the worktable 1 is provided with the rotating disk 101 and the adjustment seat 2. The worktable 1 provides a stable mounting base for the whole equipment. The rotating disk 101 carries the popsicle stick workpiece and realizes uniform speed turnover conveying, which is suitable for continuous inspection operations on the production line. The adjustment seat 2 is provided with an adjustment component. Two movable seats 302 are symmetrically slidably mounted on the side wall of the adjustment seat 2. Each movable seat 302 has a limit seat 303 fixed on its surface. The movable seat 302 is provided with a buffer component. Each limit seat 303 has a fixed seat 4 slidably mounted in it. The limit seat 303 forms a sliding limit on the fixed seat 4, constraining its movement trajectory and ensuring smooth and stable adjustment of the lens position. A fixed rod 6 is fixed in the fixed seat 4. A lens seat 601 is provided at the end of the fixed rod 6. The lens seat 601 provides a stable mounting platform for the lens and the adjustment component. The adjustment assembly can drive the two fixed seats 4 to slide along the vertical length of the adjustment seat 2, so as to drive the lenses on the two lens mounts to move relative to each other or towards each other through the fixed rod; the adjustment assembly includes a rotating block 3 rotatably installed in the adjustment seat 2, and a movable connecting rod 301 rotatably installed at both ends of the rotating block 3. The movable connecting rod 301 drives the two movable seats 302 to move synchronously by rotation and pull, so as to ensure symmetrical adjustment of the lenses, strong adjustment consistency and high synchronization. It also includes a first oil tank 7 disposed in the adjustment seat 2 and a second oil tank 702 disposed on the surface of the lens mount 601. The first piston rod 701 is slidably installed in the first oil tank 7, and the second piston rod 703 is slidably installed in the second oil tank 702, forming a hydraulic transmission circuit. Oil is used as the force transmission medium to improve the smoothness of angle adjustment. It also includes a limiting block 602 fixed on the surface of the lens mount 601. A sliding block 802 is slidably limited in the limiting block 602. An adjusting connecting rod 801 is rotatably installed on the side wall of the sliding block 802. It also includes a rotating plate 8 rotatably installed on the surface of the lens mount 601, forming a linkage transmission structure for linear motion to angle deflection, so as to realize fine adjustment of the lens shooting tilt angle.

[0021] In one embodiment of the present invention, the rotating block 3 is externally connected to a motor, which serves as a power source to drive the rotating block 3 to perform a fixed-angle rotational motion. This eliminates the need for manual operation and adjustment, resulting in uniform and stable adjustment movements with strong controllability, thereby improving the equipment's adjustment efficiency and intelligence. The end of the moving link 301 is rotatably connected to the moving seat 302. The adjusting seat 2 has an active groove 202 for the moving seat 302 to move. The active groove 202 limits and guides the movement of the moving seat 302, constraining the moving seat 302 to move only along the active groove 202 to prevent deviation.

[0022] In one embodiment of the present invention, the first oil tank 7 and the second oil tank 702 are filled with oil. The first oil tank 7 and the second oil tank 702 are connected by a hose to form a complete hydraulic transmission circuit. By utilizing the incompressible physical property of the oil itself, the power is transmitted smoothly. When the first piston rod 701 is squeezed and compressed by an external force, the pressure is transmitted to the inside of the second oil tank 702 through the hose, driving the second piston rod 703 to perform telescopic movement.

[0023] In one embodiment of the present invention, the end of the first piston rod 701 is in close contact with the side wall of the rotating block 3. When the rotating block 3 rotates at an angle, it directly forms a smooth compression on the first piston rod 701. The end of the second piston rod 703 is in close contact with the side wall of the sliding block 802, and the thrust generated by hydraulic pressure is directly applied to the sliding block 802.

[0024] As one embodiment of the present invention, the end of the adjusting link 801 is rotatably connected to the rotating plate 8, which transforms the linear sliding motion of the sliding block 802 into the angular deflection motion of the rotating plate 8, avoiding motion interference caused by rigid transmission, accurately controlling the deflection amplitude of the rotating plate 8, and thus smoothly fine-tuning the shooting tilt angle of the lens, ensuring that the lens angle can be adapted to the shape of the popsicle stick, and achieving blind-spot-free full-coverage imaging detection.

[0025] As one embodiment of the present invention, the buffer assembly can neutralize the vibration generated by the swing of the fixed rod; the buffer assembly includes a sliding plate 5 slidably installed in the movable seat 302, and an adjusting block 502 symmetrically slidably installed on both sides of the movable seat 302. The adjusting block 502 has a movable block 503 fixed on its side wall, and also includes a plurality of compression grooves 201 symmetrically opened on the inner wall of the adjusting seat 2. The compression grooves 201 rely on their own inclined design to compress the movable block 503 according to the different positions of the movable seat 302, and the adjusting block 502 and the sliding plate 5 move synchronously to automatically adjust the compression amplitude of the buffer spring 501, so as to realize the adaptive change of the shock absorption force according to the working conditions.

[0026] As one embodiment of the present invention, the sidewall of the adjusting block 502 is designed to be inclined. The sidewall of the adjusting block 502 is in close contact with the bottom of the sliding plate 5. Relying on the geometric characteristics of the inclined surface itself, the horizontal displacement of the adjusting block 502 is converted into a vertical pushing force on the sliding plate 5, thereby realizing the conversion of the direction of movement.

[0027] In one embodiment of the present invention, a buffer spring 501 is provided on the surface of the sliding plate 5. The sliding plate 5 is connected to the fixed seat 4 through the buffer spring 501. Relying on the elastic deformation characteristics of the buffer spring 501, a flexible buffer connection is constructed between the sliding plate 5 and the fixed seat 4, which isolates the direct transmission of mechanical vibration of the production line to the fixed seat 4 and the lens part. When the sliding plate 5 is subjected to the inclined plane to generate lifting displacement, the compression state of the buffer spring 501 can be changed in real time.

[0028] In one embodiment of the present invention, the inner wall of the extrusion groove 201 is inclined, and the side wall of the moving block 503 is in close contact with the inner wall of the extrusion groove 201. When the moving seat 302 moves, the moving block 503 slides along the inclined inner wall of the extrusion groove 201. With the help of the guiding and limiting effect of the inclined surface, the horizontal movement stroke is converted into lateral extrusion force, which drives the adjusting block 502 to slide laterally, changing the compression amplitude of the buffer spring 501, so as to realize the shock absorption effect automatically adapts to the working conditions.

[0029] Working principle: When using the fast dynamic machine vision mounting mechanism based on the four-lens image inspection machine to perform visual inspection of popsicle sticks, the popsicle stick workpiece to be inspected is placed on the rotating disk 101 set on the surface of the worktable 1. According to the overall size and specifications of the popsicle stick workpiece to be inspected, the motor is started to adjust the lens height. The motor drives the rotating block 3 to rotate around the central axis. The moving connecting rod 301 connected to both ends of the rotating block 3 rotates accordingly, pulling the two moving seats 302 to move smoothly towards each other along the movable groove 202. During the displacement process, the moving seats 302 drive the fixed seat 4, which is slidably installed in the limiting seat 303 fixed on its surface, to move synchronously. The fixed seat 4 is equipped with a fixed rod 6, and the end of the fixed rod 6 is fixed with a lens seat 601. When the fixed seat 4 changes, it drives the lens seat 601 to move, thereby changing the position of the upper and lower lenses and completing the adaptation adjustment of the lens spacing and height. No manual adjustment is required to adapt to the workpiece to be inspected. As the rotating block 3 rotates, its sidewall presses against the first piston rod 701. After being pressed, the first piston rod 701 compresses the oil in the first oil tank 7. The pressurized oil is transported to the inside of the second oil tank 702 through a hose. Based on the hydraulic transmission principle, the second piston rod 703 is pushed outward smoothly. The second piston rod 703 continuously pushes the sliding block 802, causing the sliding block 802 to slide along the limiting block 602 installed on the surface of the lens mount 601. An adjusting connecting rod 801 is rotatably installed on the sidewall of the sliding block 802, and the end of the adjusting connecting rod 801 is rotatably connected to the rotating plate 8. While the sliding block 802 slides, it smoothly pushes the rotating plate 8 to deflect at an angle, thereby adjusting the angle of the lens installed on the surface of the rotating plate 8 and realizing the synchronous angle adjustment of the lenses on both sides. As the movable seat 302 moves, the adjusting block 502 slidably installed inside the movable seat 302 moves synchronously. The movable block 503 fixed to the side wall of the adjusting block 502 is in close contact with the inner wall of the extrusion groove 201 opened inside the adjusting seat 2. During the movement, the movable block 503 is squeezed by the inner wall of the inclined extrusion groove 201 and slides inward, pushing the inclined side wall of the adjusting block 502 to squeeze the bottom of the sliding plate 5. The inclined structure lifts the sliding plate 5. While the sliding plate 5 moves upward, it squeezes the buffer spring 501 set on the surface, changing the compression amplitude of the buffer spring 501 and realizing the adaptive adjustment of the buffering and shock absorption force. During production, when the two fixed seats 4 approach each other, the angle between the rotating block 3 and the two moving links 301 becomes smaller, making it easier for the mechanical vibration of the production line to be transmitted and amplified. The vibration intensity felt by the fixed seat 4 will increase, and the compression amplitude of the buffer spring 501 will increase accordingly, further enhancing the shock absorption and buffering capacity and weakening the impact of high-intensity vibration. When the two fixed seats 4 are far apart, the rotating block 3 and the two moving links 301 approach a straight line structure, the vibration transmission path is blocked, the vibration is not easily transmitted to the lens structure, and the overall vibration interference is reduced. At this time, the compression amplitude of the buffer spring 501 is reduced accordingly. While meeting the basic vibration reduction requirements, it avoids excessive buffering force causing structural rebound, and ensures that the mechanism is always in a stable vibration reduction state adapted to the working conditions.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A fast dynamic machine vision mounting mechanism based on a four-lens image sorting machine, comprising a worktable (1) and a rotating disk (101), characterized in that: The workbench (1) is provided with a rotating disk (101) and an adjusting seat (2) on its surface. The adjusting seat (2) is provided with an adjusting component. Two movable seats (302) are symmetrically slidably installed on the side wall of the adjusting seat (2). A limit seat (303) is fixed on the surface of each movable seat (302). A buffer component is provided inside the movable seat (302). A fixed seat (4) is slidably installed inside each limit seat (303). A fixed rod (6) is fixed inside the fixed seat (4). A lens mount (601) is provided at the end of the fixed rod (6). The adjustment component can drive the two fixed seats (4) to slide along the vertical length direction of the adjustment seat (2), so as to drive the lenses on the two lens mounts to move relative to each other or towards each other through the fixed rod; The buffer assembly can neutralize the vibrations generated by the swinging of the fixed rod.

2. The rapid dynamic machine vision mounting mechanism based on a four-lens image sorting machine according to claim 1, characterized in that: The adjustment assembly includes a rotating block (3) rotatably mounted in the adjustment seat (2), with movable connecting rods (301) rotatably mounted at both ends of the rotating block (3), a first oil tank (7) disposed in the adjustment seat (2), and a second oil tank (702) disposed on the surface of the lens mount (601). A first piston rod (701) is slidably mounted in the first oil tank (7), and a second piston rod (703) is slidably mounted in the second oil tank (702). It also includes a limiting block (602) fixed on the surface of the lens mount (601), with a sliding block (802) slidably mounted in the limiting block (602). An adjustment connecting rod (801) is rotatably mounted on the side wall of the sliding block (802), and a rotating plate (8) rotatably mounted on the surface of the lens mount (601).

3. The rapid dynamic machine vision mounting mechanism based on a four-lens image sorting machine according to claim 2, characterized in that: The rotating block (3) is connected to a motor, the end of the moving link (301) is rotatably connected to the moving seat (302), and the adjusting seat (2) has an active groove (202) for the moving seat (302) to move.

4. The rapid dynamic machine vision mounting mechanism based on a four-lens image sorting machine according to claim 3, characterized in that: The first oil tank (7) and the second oil tank (702) are filled with oil, and the first oil tank (7) and the second oil tank (702) are connected by a hose.

5. The rapid dynamic machine vision mounting mechanism based on a four-lens image sorting machine according to claim 4, characterized in that: The end of the first piston rod (701) is in close contact with the side wall of the rotating block (3), and the end of the second piston rod (703) is in close contact with the side wall of the sliding block (802).

6. The rapid dynamic machine vision mounting mechanism based on a four-lens image sorting machine according to claim 5, characterized in that: The end of the adjusting link (801) is rotatably connected to the rotating plate (8).

7. A rapid dynamic machine vision mounting mechanism based on a four-lens image sorting machine according to claim 6, characterized in that: The buffer assembly includes a sliding plate (5) that is slidably installed in the movable seat (302), and an adjustment block (502) that is symmetrically slidably installed on both sides of the movable seat (302). The side wall of the adjustment block (502) is fixed with a movable block (503), and also includes a plurality of extrusion grooves (201) symmetrically opened on the inner wall of the adjustment seat (2).

8. A rapid dynamic machine vision mounting mechanism based on a four-lens image sorting machine according to claim 7, characterized in that: The sidewall of the adjusting block (502) is inclined and is in close contact with the bottom of the sliding plate (5).

9. A rapid dynamic machine vision mounting mechanism based on a four-lens image sorting machine according to claim 8, characterized in that: The sliding plate (5) is provided with a buffer spring (501) on its surface, and the sliding plate (5) is connected to the fixed seat (4) through the buffer spring (501).

10. A rapid dynamic machine vision mounting mechanism based on a four-lens image sorting machine according to claim 9, characterized in that: The inner wall of the extrusion groove (201) is inclined, and the side wall of the moving block (503) is in close contact with the inner wall of the extrusion groove (201).

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