Rear-mounted visual positioning mechanism of conduction band machine

Abstract

The utility model discloses a rear-mounted visual positioning mechanism of a belt guide machine, which comprises a mounting frame mounted on the belt guide machine, and a visual acquisition module, a light source module, an image processing module, a light shield and a driving component are arranged on the mounting frame. The light source module is arranged perpendicular to the belt guiding machine so that an image area on the belt guiding machine can have visual light spots except the image area on the belt guiding machine, and the visual collection module is arranged perpendicular to the belt guiding machine so that the visual light spots on the belt guiding machine can be captured. The image processing module is connected with the visual acquisition module and the light source module to obtain image data of the visual light spots, the light shield is arranged between the visual acquisition module and the conduction band machine, and the driving mechanism is connected with the light shield to adjust the brightness of the visual light spots captured by the visual acquisition module. According to the utility model, the high-resolution CCD camera is adopted, and light source illumination and shading control are combined, so that materials can be positioned, and various high-precision production requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of positioning technology for belt conveyors, and in particular to a rear-mounted visual positioning mechanism for belt conveyors. Background Technology

[0002] In modern industrial automated production, belt conveyors, as key equipment for material handling, are widely used in many fields such as electronics manufacturing, food processing, and packaging printing. To achieve automated material processing, sorting, and assembly, precise positioning of materials on the belt conveyor based on visual positioning technology is crucial.

[0003] The visual positioning mechanisms commonly used in the market for conveyor belt systems have many limitations. The light source design of traditional visual positioning mechanisms is not reasonable enough, resulting in poor image acquisition quality and affecting positioning accuracy. Utility Model Content

[0004] In order to solve the technical problems existing in the background art, this utility model proposes a rear-mounted visual positioning mechanism for a belt conveyor.

[0005] This utility model proposes a rear-mounted visual positioning mechanism for a conveyor belt, comprising: a mounting frame installed on the conveyor belt; a visual acquisition module, a light source module, an image processing module, a light shield, and a driving component mounted on the mounting frame; the light source module being perpendicular to the conveyor belt so that the image area on the conveyor belt has a visual light spot other than the image area on the conveyor belt; the visual acquisition module being perpendicular to the conveyor belt to capture the visual light spot on the conveyor belt; the image processing module being connected to the visual acquisition module and the light source module to obtain image data of the visual light spot; the light shield being disposed between the visual acquisition module and the conveyor belt; and the driving mechanism being connected to the light shield to adjust the brightness of the visual light spot captured by the visual acquisition module.

[0006] Preferably, the visual acquisition module uses a CCD camera.

[0007] Preferably, the light source module adopts a ring-shaped LED light source.

[0008] Preferably, the drive assembly includes a cylinder, the output end of which is connected to a light shield.

[0009] Preferably, anti-vibration pads are provided between the visual acquisition module, the light source module, and the mounting bracket.

[0010] Preferably, the lens of the CCD camera is fitted with nano-coated quartz glass.

[0011] Preferably, the length direction of the cylinder is perpendicular to the visual acquisition module.

[0012] This invention proposes a rear-mounted visual positioning mechanism for a conveyor belt system. Its advantages include: employing a high-resolution CCD camera, combined with light source illumination and shading control, enabling material positioning to meet various high-precision production needs. The brightness and color temperature of the light source, as well as the position and angle of the visual acquisition module, can be flexibly adjusted according to different material characteristics and production scenarios, providing wide applicability. Anti-vibration pads are installed between each functional module to effectively isolate conveyor belt vibration; the drive assembly uses high-precision cylinders and displacement sensors to ensure the accuracy and stability of the shading adjustment, guaranteeing the reliability of the entire visual positioning system during long-term operation. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of a rear-mounted visual positioning mechanism for a conveyor belt machine proposed in this utility model;

[0014] Figure 2 This is a side view of a rear-mounted visual positioning mechanism for a belt conveyor proposed in this utility model.

[0015] In the diagram: 1. Mounting bracket, 2. Vision acquisition module, 3. Light source module, 4. Image processing module, 5. Light shield. Detailed Implementation

[0016] refer to Figure 1-2 This utility model proposes a rear-mounted visual positioning mechanism for a belt conveyor, used for visual positioning of materials conveyed by the belt conveyor to meet high-precision production requirements. Its main body is constructed using a mounting frame 1 installed on the belt conveyor. The mounting frame 1 is made of high-strength aluminum alloy and is securely connected to the fixed bracket of the belt conveyor by bolts, possessing good rigidity and deformation resistance. It can remain stable in complex industrial production environments and provide a reliable mounting foundation for other functional modules.

[0017] Key components such as the vision acquisition module 2, light source module 3, image processing module 4, light shield 5, and drive assembly are arranged in an orderly manner on the mounting frame 1. Each module has a clear division of labor and works closely together to achieve the visual positioning function of materials on the conveyor belt.

[0018] The visual acquisition module 2 employs a high-performance CCD camera. This CCD camera boasts high resolution, high frame rate, and excellent low-noise performance, enabling it to quickly and clearly capture image information from the conveyor belt. In practical applications, different models of CCD cameras can be flexibly selected based on varying production scenarios and precision requirements. For example, in the semiconductor packaging field, where extremely high positioning accuracy is required, a high-precision CCD camera with a resolution of tens of millions of pixels can be used; while in general electronic component sorting scenarios, a more cost-effective megapixel-level CCD camera can be selected.

[0019] To further improve image acquisition quality, CCD cameras are fitted with nano-coated quartz glass on their lenses. This special quartz glass has a nano-coating treatment that effectively reduces light reflection and increases light transmittance. It also has excellent wear and scratch resistance, protecting the lens from dust, oil, and other contaminants, ensuring that the clarity and stability of image acquisition remain unaffected during long-term use.

[0020] The CCD camera is positioned perpendicular to the conveyor belt, and its installation height and angle have been precisely calculated and adjusted. It is fixed to mounting frame 1 using a dedicated adjustable mounting bracket. The position and angle of the CCD camera can be fine-tuned according to different material sizes, conveyor belt speeds, and other factors to obtain the best image acquisition results.

[0021] Light source module 3 uses a ring-shaped LED light source. The ring-shaped LED light source has the advantages of uniform brightness, high luminous efficiency, and long life, and can provide stable and sufficient illumination for the image area on the conveyor belt.

[0022] The ring-shaped LED light source is positioned perpendicular to the conveyor belt. Through a special optical design, it enables the image area on the conveyor belt to have a visible light spot that is distinct from the image area itself. This light spot design helps to highlight material features, enhance image contrast, and allow the visual acquisition module 2 to more clearly capture key information such as the edges and contours of the material. In practical applications, the brightness and color temperature of the ring-shaped LED light source can be adjusted according to the material's properties, such as texture and color. For example, for highly reflective metallic materials, the light source brightness can be appropriately reduced to avoid reflections affecting image quality; for darker materials, the light source brightness can be increased or the color temperature adjusted to enhance image clarity.

[0023] A shock-absorbing pad is installed between the light source module 3 and the mounting bracket 1. The shock-absorbing pad is made of highly elastic rubber, which can effectively isolate the vibration generated during the operation of the conveyor belt, prevent the vibration from affecting the stability of the light source, ensure the consistency of the lighting effect, and thus guarantee the image quality acquired by the visual acquisition module 2.

[0024] The image processing module 4 connects the vision acquisition module 2 and the light source module 3. It is primarily responsible for acquiring the image data of the visualized light spots captured by the vision acquisition module 2, and for analyzing, processing, and calculating this data.

[0025] Image processing module 4 employs a high-performance industrial computer equipped with professional image processing software. The software incorporates various advanced image processing algorithms, such as edge detection, feature extraction, and pattern recognition algorithms. When the vision acquisition module 2 transmits image data to image processing module 4, the software first performs preprocessing operations such as filtering and noise reduction to remove interference information. Then, it uses edge detection algorithms to extract the material's edge contours and feature extraction algorithms to obtain the material's key feature points. Finally, combined with a pre-set standard template or positioning reference, it uses pattern recognition algorithms to calculate the material's actual position and orientation deviation.

[0026] Image processing module 4 also has data communication capabilities, enabling it to transmit the calculated positioning results as digital signals to subsequent control systems, such as the motion control system of the robotic arm, so that the robotic arm can accurately grasp or process materials based on the positioning results. Simultaneously, image processing module 4 can automatically adjust parameters such as brightness and color temperature of light source module 3 according to actual production needs, achieving intelligent operation of the vision positioning system.

[0027] A light shield 5 is positioned between the vision acquisition module 2 and the conveyor belt. Its main function is to shield the image acquisition from interference by ambient light, ensuring that the image information acquired by the vision acquisition module 2 comes solely from the illumination provided by the light source module 3. The light shield 5 is made of black opaque material, and its inner surface undergoes a special matte finish treatment, which effectively absorbs stray light and further improves image quality.

[0028] The drive assembly is used to adjust the position of the light shield 5, thereby controlling the brightness of the visual light spot captured by the vision acquisition module 2. The drive assembly includes a cylinder, the output end of which is connected to the light shield 5 via a linkage mechanism. The length direction of the cylinder is perpendicular to the vision acquisition module 2. By controlling the extension and retraction of the cylinder, the light shield 5 can be moved up and down in a direction perpendicular to the conveyor belt. When it is necessary to increase the brightness of the light spot, the cylinder retracts, moving the light shield 5 away from the conveyor belt and reducing the obstruction of light; when it is necessary to decrease the brightness of the light spot, the cylinder extends, moving the light shield 5 closer to the conveyor belt and increasing the obstruction of light.

[0029] To ensure the stability and reliability of cylinder operation, anti-vibration pads are also installed between the cylinder and the mounting bracket 1 to isolate the impact of belt conveyor vibration on cylinder movement. Simultaneously, the cylinder is equipped with a high-precision displacement sensor that can provide real-time feedback on the position of the sunshade 5, facilitating precise adjustment of the sunshade 5's position by the control system.

[0030] Workflow: When the conveyor belt starts running and the material is conveyed into the visual positioning area, the light source module 3 is activated first. The ring-shaped LED light source emits light, forming a specific visual spot on the conveyor belt, illuminating the material image area. At this time, the CCD camera of the visual acquisition module 2 starts working, quickly capturing the material image with the visual spot at the set frame rate, and transmitting the image data to the image processing module 4.

[0031] After receiving the image data, the image processing module 4 immediately performs a series of image processing and analysis operations to calculate the actual position and orientation deviation of the material. During the image processing, if poor image quality is detected, such as unsuitable brightness or insufficient contrast, the image processing module 4 will automatically send a control signal to the drive component. By adjusting the extension and retraction of the cylinder, the position of the light shield 5 is controlled, thereby adjusting the brightness of the visual spot until the image quality that meets the positioning requirements is obtained.

[0032] Finally, the image processing module 4 transmits the calculated positioning results to the subsequent control system, which then performs corresponding operations on the materials based on the positioning results, such as precise grasping by the robotic arm and automatic sorting of materials, thus completing the entire vision positioning and control process.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A rear-mounted vision positioning mechanism of a carrier, characterized in that, include: A mounting bracket (1) is installed on the conveyor belt. The mounting bracket (1) is equipped with a vision acquisition module (2), a light source module (3), an image processing module (4), a light shield (5), and a drive assembly. The light source module (3) is set perpendicular to the conveyor belt so that the image area on the conveyor belt has a visual spot other than the image area on the conveyor belt. The vision acquisition module (2) is set perpendicular to the conveyor belt to capture the visual spot on the conveyor belt. The image processing module (4) is connected to the vision acquisition module (2) and the light source module (3) to obtain the image data of the visual spot. The light shield (5) is set between the vision acquisition module (2) and the conveyor belt. The drive mechanism is connected to the light shield (5) to adjust the brightness of the visual spot captured by the vision acquisition module (2).

2. The rear vision positioning mechanism of the carrier according to claim 1, characterized in that, The visual acquisition module (2) uses a CCD camera.

3. The rear vision positioning mechanism of a carrier according to claim 1, characterized in that, The light source module (3) adopts a ring-shaped LED light source.

4. The rear vision positioning mechanism of the carrier according to claim 1, characterized in that, The drive assembly includes a cylinder, the output end of which is connected to a light shield (5).

5. The rear vision positioning mechanism of a carrier according to claim 1, characterized in that, Vibration-proof pads are provided between the visual acquisition module (2), the light source module (3), and the mounting bracket (1).

6. The rear vision positioning mechanism of a carrier according to claim 2, characterized in that, The lens of a CCD camera is fitted with nano-coated quartz glass.

7. The rear vision positioning mechanism of a carrier according to claim 4, characterized in that, The length direction of the cylinder is perpendicular to that of the vision acquisition module (2).

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