Multi-angle visual inspection mechanism

Abstract

The utility model provides a multi-angle visual inspection mechanism, including base, traverse mechanism, longitudinal mount, lifting mechanism and image acquisition mechanism, said traverse mechanism is installed on the base, through traverse linear module drive traverse carrier plate to move along traverse guide rail, the longitudinal mount is installed on the traverse carrier plate; a lifting mechanism is installed on the longitudinal fixing frame, a longitudinal carrying plate is driven to move up and down through a lifting linear module, and an image collecting mechanism is installed on the longitudinal carrying plate. According to the multi-angle visual inspection mechanism provided by the utility model, an expensive six-axis robot arm is replaced by the linear module, so that the purchase, programming and maintenance costs are reduced, and the multi-angle visual inspection mechanism is suitable for small and medium-sized enterprises. Although the robot is not flexible as a six-axis robot, the robot still provides enough degree of freedom to adapt to various types of detection tasks.

Description

Technical Field

[0001] The utility model relates to the technical field of image visual detection, in particular to a multi-angle visual detection mechanism. Background Art

[0002] Multi-angle visual inspection systems are a key technology in industrial automation. They utilize machine vision to convert targets into image signals, and then process and analyze these images through computers to perform detection, identification, and measurement. These systems typically incorporate mechanical adjustment capabilities, such as lifting and translation mechanisms, to automatically adjust the camera's height and angle based on the characteristics of the object being inspected, enabling precise inspection of objects of varying sizes and shapes.

[0003] The core of a machine vision system lies in two major components: image acquisition and image processing. Image acquisition involves capturing high-quality images, which relies on a high-performance camera, appropriate lighting conditions, and possibly auxiliary equipment such as optical filters. Image processing, on the other hand, encompasses a series of steps, including image preprocessing (such as noise removal), feature extraction, and pattern recognition. The ultimate goal is to extract useful information from the image, such as size, location, and defect type.

[0004] To ensure accurate observation of the object under test from multiple angles, multi-angle visual inspection systems are typically equipped with flexible mechanical components, such as linear modules, rotary platforms, or more complex six-axis robotic arms. These components allow the camera to move in three dimensions to cover a wider viewing angle and reduce blind spots.

[0005] While six-axis robots offer significant flexibility, enabling them to mimic the movements of human arms and complete complex spatial positioning tasks, they are relatively expensive, including purchase costs, programming and debugging time, and subsequent maintenance costs. Investing in such high-end equipment can be a significant financial burden for some small and medium-sized businesses. Utility Model Content

[0006] In response to the above problems in the prior art, the present invention provides a multi-angle visual inspection mechanism that utilizes a linear module to achieve multi-angle adjustment of a camera.

[0007] The solution adopted by the utility model to solve its technical problems is: a multi-angle visual inspection mechanism, including a base, a transverse movement mechanism, a longitudinal fixing frame, a lifting mechanism and an image acquisition mechanism, wherein the transverse movement mechanism is installed on the base, and the transverse movement mechanism includes a transverse linear module, a transverse guide rail, a transverse drag chain, a transverse carrier plate and a transverse slider, a transverse linear module and a transverse guide rail parallel to the transverse linear module are installed on the base, a group of transverse sliders are installed on the rail, a transverse drag chain is provided on the outer side of the transverse linear module, the transverse drag chain is used to receive the connecting line of the transverse linear module, the transverse carrier plate is fixed on the transverse linear module and the transverse slider, the transverse carrier plate is driven to move along the transverse guide rail by the transverse linear module, and the longitudinal fixing frame is installed on the transverse carrier plate; A lifting mechanism is installed on the longitudinal fixed frame, and the lifting mechanism includes a lifting linear module, a longitudinal guide rail, a longitudinal drag chain and a longitudinal carrier plate. The lifting linear module is installed vertically along the longitudinal fixed frame, and the longitudinal guide rail is fixed on the longitudinal fixed frame. The longitudinal guide rail is parallel to the lifting linear module. A longitudinal drag chain is set on the outside of the lifting linear module, and the connecting line of the lifting linear module is stored by the longitudinal drag chain. The longitudinal carrier plate is installed on the longitudinal guide rail and the lifting linear module, and the longitudinal carrier plate is driven up and down by the lifting linear module. The image acquisition mechanism is installed on the longitudinal carrier plate.

[0008] Furthermore, the base adopts a rectangular metal frame base, and casters are provided at the four corners below the base. At the same time, outward-inclined support rods are provided at both ends of the long sides of the base. A cross support plate is provided below the support rod, and screw holes are provided on the cross support plate. Anchor cups are installed on the cross support plate through the screw holes.

[0009] Furthermore, a non-slip rubber pad is provided on the bottom surface of the anchor cup.

[0010] Furthermore, the image acquisition mechanism includes a camera support rod and an image acquisition camera. One end of the camera support rod is fixed on the longitudinal carrier plate, and the image acquisition camera is installed on the other end. The image acquisition mechanism moves linearly through the transverse movement mechanism and the lifting mechanism, so that the image acquisition mechanism moves on a two-dimensional plane, thereby performing multi-angle shooting and detection on the surface of the workpiece to be inspected.

[0011] Furthermore, a corner brace is installed between the camera support rod and the longitudinal carrier plate.

[0012] Furthermore, the camera support rod adopts an electric push rod, which is fixed on the longitudinal carrier plate. A camera mounting plate is fixed on the telescopic end of the electric push rod, and an image acquisition camera is installed on the camera mounting plate. A laser rangefinder is fixed next to the image acquisition camera, and the laser rangefinder is parallel to the direction of the image acquisition camera lens.

[0013] The beneficial effects of this utility model are as follows: The multi-angle visual inspection mechanism provided by this utility model replaces the expensive six-axis robot arm with a linear module, reducing procurement, programming, and maintenance costs, making it suitable for small and medium-sized enterprises. Although not as flexible as a six-axis robot, it still provides sufficient degrees of freedom to adapt to various types of inspection tasks. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model from a top view;

[0016] Figure 3 This is a front structural diagram of the lifting mechanism of the utility model;

[0017] Figure 4 It is a structural diagram of the image acquisition mechanism;

[0018] Figure 5 It is a schematic diagram of the mechanism of another embodiment of the present invention.

[0019] Numbers in the figure: 1. Base; 2. Transverse movement mechanism; 3. Longitudinal fixing frame; 4. Lifting mechanism; 5. Image acquisition mechanism; 201. Transverse linear module; 202. Transverse guide rail; 203. Transverse drag chain; 204. Transverse carrier; 205. Transverse slider; 401. Lifting linear module; 402. Longitudinal guide rail; 403. Longitudinal drag chain; 404. Longitudinal carrier; 501. Camera support rod; 502. Image acquisition camera; 503. Electric push rod; 101. Caster; 102. Support rod; 103. Anchor cup. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below.

[0021] Example 1: Currently, the multi-angle visual inspection mechanism on the market mostly uses a six-axis robot arm to drive the camera to perform multi-angle shooting inspection. However, the six-axis robot arm is expensive and has high maintenance costs, which is a high burden for small and medium-sized enterprises. Based on this, the utility model provides a Figure 1 The multi-angle visual inspection mechanism shown can move freely on a two-dimensional plane through the drive of a linear module, thereby performing visual inspection on the surface of the device to be inspected.

[0022] like Figure 1As shown, the multi-angle visual detection mechanism includes a base 1, a transverse movement mechanism 2, a longitudinal fixing frame 3, a lifting mechanism 4 and an image acquisition mechanism 5. The base 1 adopts a rectangular metal frame base 1, and casters 101 are arranged at the four corners below the base 1. The casters 101 adopt universal wheels. At the same time, outward-inclined support rods 102 are arranged at both ends of the long side of the base 1, and a cross brace is arranged below the support rod 102. The cross brace is provided with screw holes, and a ground cup 103 is installed on the cross brace through the screw holes. The bottom surface of the ground cup 103 is provided with an anti-slip rubber pad.

[0023] When the detection mechanism needs to be moved, the anchor cup 103 can be rotated to raise it into the air, with the universal wheels touching the ground. This allows the detection mechanism to be moved to the desired location. Once the detection mechanism reaches the desired location, the anchor cup 103 can be rotated to lower it, supporting the ground with the anchor cup 103 to secure the detection mechanism in place. The anchor cup 103 also adjusts the detection mechanism's level, while the anchor cup 103 and the non-slip rubber pads underneath ensure stability.

[0024] Devices such as a controller and a power supply are also installed in the metal frame base 1 , and the linear module and the image acquisition mechanism 5 are controlled by the controller.

[0025] like Figure 2 As shown, the transverse mechanism 2 is firmly mounted on the base 1. The mechanism mainly consists of a transverse linear module 201, a transverse guide rail 202, a transverse drag chain 203, a transverse carrier 204, and a transverse slider 205. Specifically, the transverse linear module 201 and its matching transverse guide rail 202 are mounted in parallel on the base 1 to ensure that the carrier can slide smoothly along the predetermined path. A series of transverse sliders 205 are mounted on the guide rail, working in conjunction with the transverse linear module 201 to achieve precise position control. In addition, in order to protect and manage the connecting cables, a transverse drag chain 203 is provided on the outside of the transverse linear module 201 to store and guide these cables to move along with the carrier. The transverse linear module 201 and the transverse slider 205 jointly fix the transverse carrier 204. When the linear module is in operation, it can drive the carrier to move smoothly in the horizontal direction along the guide rail. Finally, a longitudinal fixing frame 3 is installed on the transverse carrier plate 204 to provide support for the subsequent vertical motion components.

[0026] like Figure 3As shown, the lifting mechanism 4 is integrated into the above-mentioned lateral moving structure, and its core components include a lifting linear module 401, a longitudinal guide rail 402, a longitudinal drag chain 403 and a longitudinal carrier plate 404. The longitudinal fixed frame 3 is arranged vertically, and the lifting linear module 401 and the longitudinal guide rail 402 are installed in parallel thereon. The two complement each other to ensure the stability and accuracy of the carrier plate in the vertical direction. Similarly, the outside of the lifting linear module 401 is also equipped with a longitudinal drag chain 403 to manage and protect the internal electrical connection wires to prevent wear or interference caused by movement. A longitudinal carrier plate 404 is assembled between the longitudinal guide rail 402 and the lifting linear module 401. The power output of the linear module can drive the carrier plate to achieve vertical movement up and down. Finally, an image acquisition mechanism 5 is integrated on the longitudinal carrier plate 404, so that equipment such as cameras can freely adjust their positions within a controlled height range, thereby ensuring comprehensive and accurate multi-angle shooting and analysis of the detected object.

[0027] like Figure 4 As shown, a camera support rod 501 is transversely fixed to the carrier plate of the lifting mechanism 4, parallel to the base 1. A camera mounting plate is fixed to the end of the camera support rod 501, and an image acquisition camera 502 is mounted on the camera mounting plate. An angle brace is installed between the camera support rod 501 and the longitudinal carrier plate 404, and the angle brace reinforcement ensures that the camera support rod 501 remains horizontal.

[0028] The structures of the transverse mechanism 2 and the lifting mechanism 4 are similar and are arranged perpendicular to each other. The lifting mechanism 4 is installed on the transverse carrier 204 of the transverse mechanism 2, thereby realizing the free movement of the image acquisition mechanism 5 on the X-axis and Y-axis.

[0029] These linear modules utilize linear motor-driven linear modules, suitable for applications requiring extremely high precision and speed. Examples include the Dürr Ecoclean LM series and the Bosch Rexroth LMS series. These modules feature no wearing parts, direct drive, and the ability to achieve extremely high speed and acceleration performance while maintaining very high positioning accuracy.

[0030] This multi-angle visual inspection mechanism is equipped with universal wheels and anchor cups 103, making it easy to move within the work area. To adjust its position, simply rotate the anchor cups 103 to raise it into the air, allowing the universal wheels to touch the ground, allowing it to be easily moved to the desired location. Once the desired position is reached, the anchor cups 103 are rotated again to lower them to the ground, ensuring the inspection device remains stable. Anti-slip rubber pads provide increased friction to prevent slipping. By fine-tuning the height of each anchor cup 103, the entire inspection mechanism can be precisely leveled, ensuring stability during operation.

[0031] Connect the inspection mechanism to a stable power supply to ensure the proper operation of all components (e.g., linear modules, controller, etc.). Initialize the system configuration using the controller pre-installed in the metal frame base 1. This includes setting the motion parameters of each axis (speed, acceleration, travel range, etc.) and the parameters of the image acquisition camera 502 (exposure time, resolution, etc.).

[0032] The object to be inspected is placed on an appropriate workbench based on its size and shape, ensuring it is within the working range of the inspection mechanism. The image acquisition camera 502 is activated and a preliminary calibration is performed through the control system to ensure that the camera lens is correctly aligned with the target area. The data from the laser rangefinder is also checked to confirm the optimal shooting distance.

[0033] The user can input a specific inspection task or select a preset inspection mode through the control system. At this point, the traverse mechanism 2 and the lift mechanism 4 begin operating according to a predetermined path: the traverse linear module 201 drives the carrier plate to move smoothly along the transverse guide rail, allowing the longitudinal mounting bracket 3 and subsequent components mounted thereon to move freely in the X-axis direction; the lift linear module 401 in the lift mechanism 4 controls the vertical movement of the longitudinal carrier plate 404, thereby achieving position adjustment in the Y-axis direction.

[0034] With the precise positioning of the mechanical system, the image acquisition camera 502 will capture the surface of the inspected object from multiple perspectives and transmit these images to the computer for further analysis and processing, such as defect detection, dimension measurement, etc.

[0035] Computer software analyzes the collected image data, identifying any potential issues or anomalies and determining whether quality requirements are met based on predefined criteria. Finally, the system automatically generates a detailed inspection report, providing status information for each inspection point, helping users quickly understand product quality and take necessary corrective actions.

[0036] Example 2: The image acquisition cameras 502 all have an optimal shooting distance. Based on Example 1, Figure 5 As shown, the camera support rod 501 can be equipped with an electric push rod 503. The electric push rod 503 can be used to adjust the distance between the camera support rod 501 and the object to be inspected, ensuring that the camera can capture clear images from different heights and angles. A laser rangefinder is further installed next to the camera to measure the distance between the camera and the object to be inspected in real time. The controller controls the extension and retraction of the electric push rod 503 to ensure that the camera is always at the optimal shooting distance from the object to be inspected, improving the quality of the inspection image and reducing image distortion caused by focus issues.

[0037] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

Claims

1. A multi-angle visual inspection mechanism, characterized in that: The invention comprises a base (1), a transverse movement mechanism (2), a longitudinal fixing frame (3), a lifting mechanism (4) and an image acquisition mechanism (5), wherein the transverse movement mechanism (2) is installed on the base (1), and the transverse movement mechanism (2) comprises a transverse linear module (201), a transverse guide rail (202), a transverse drag chain (203), a transverse carrier plate (204) and a transverse slider (205), wherein the transverse linear module (201) and the transverse guide rail (202) parallel to the transverse linear module (201) are installed on the base (1), and a set of transverse sliders (205) are installed on the rail. ), a transverse drag chain (203) is provided on the outside of the transverse linear module (201), the transverse drag chain (203) is used to receive the connecting line of the transverse linear module (201), a transverse carrier (204) is fixed on the transverse linear module (201) and the transverse slider (205), the transverse carrier (204) is driven by the transverse linear module (201) to move along the transverse guide rail (202), and a longitudinal fixing frame ( 3); a lifting mechanism (4) is installed on the longitudinal fixing frame (3), wherein the lifting mechanism (4) comprises a lifting linear module (401), a longitudinal guide rail (402), a longitudinal drag chain (403) and a longitudinal carrier (404); the lifting linear module (401) is vertically installed along the longitudinal fixing frame (3); and the longitudinal guide rail (402) is fixed on the longitudinal fixing frame (3); the longitudinal guide rail (402) is parallel to the lifting linear module (401); a longitudinal drag chain (403) is provided on the outer side of the lifting linear module (401); a connecting line of the lifting linear module (401) is received by the longitudinal drag chain (403); a longitudinal carrier (404) is installed on the longitudinal guide rail (402) and the lifting linear module (401); the longitudinal carrier (404) is driven to move up and down by the lifting linear module (401); and an image acquisition mechanism (5) is installed on the longitudinal carrier (404).

2. The multi-angle visual inspection mechanism according to claim 1, characterized in that: The base (1) adopts a rectangular metal frame base (1), and casters (101) are provided at the four corners below the base (1). At the same time, support rods (102) inclined outward are provided at both ends of the long side of the base (1), and a cross brace is provided below the support rod (102). The cross brace is provided with screw holes, and the anchor cup (103) is installed on the cross brace through the screw holes.

3. The multi-angle visual inspection mechanism according to claim 2, characterized in that: The bottom surface of the anchor cup (103) is provided with an anti-slip rubber pad.

4. The multi-angle visual inspection mechanism according to claim 1, characterized in that: The image acquisition mechanism (5) comprises a camera support rod (501) and an image acquisition camera (502). One end of the camera support rod (501) is fixed to the longitudinal carrier plate (404), and the other end is mounted with the image acquisition camera (502). The image acquisition mechanism (5) is moved linearly by the transverse movement mechanism (2) and the lifting mechanism (4), thereby enabling the image acquisition mechanism (5) to move on a two-dimensional plane, thereby performing multi-angle shooting inspection on the surface of the workpiece to be inspected.

5. The multi-angle visual inspection mechanism according to claim 4, characterized in that: A corner brace is installed between the camera support rod (501) and the longitudinal carrier plate (404).

6. The multi-angle visual inspection mechanism according to claim 4, characterized in that: The camera support rod (501) adopts an electric push rod (503), which is fixed on the longitudinal carrier plate (404). A camera mounting plate is fixed on the telescopic end of the electric push rod (503), and an image acquisition camera (502) is installed on the camera mounting plate. A laser rangefinder is fixed next to the image acquisition camera (502), and the laser rangefinder is parallel to the lens direction of the image acquisition camera (502).

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