High-adaptability linear array scanning device for large-size three-dimensional plate

Abstract

The utility model discloses a high-adaptability large-size three-dimensional plate linear array scanning device. The high-adaptability large-size three-dimensional plate linear array scanning device comprises a Y-axis linear synchronization module and a rack assembly, the Y-axis linear synchronization module comprises a linear array camera, a camera position adjusting mechanism, a light source clamp and a light source; the machine frame assembly comprises an upper machine frame, a lower machine frame, a plate conveying device, a motor and a sliding base. The line-scan digital camera is installed on the camera adjusting mechanism through the camera connecting piece. The light source clamp is connected with the camera position adjusting mechanism through a fastener; the light source is arranged on the light source clamp; the sliding seats are arranged on the two sides, parallel to the Y axis, above the upper rack. The camera position adjusting mechanism is connected with the sliding seat through a lead screw connecting piece; the sliding base is driven by the motor to drive the camera position adjusting mechanism to move in the Y-axis direction. By freely adjusting the object distance of the line-scan digital camera and adjusting the irradiation angle and height of the light source, the surface reflection characteristic image acquisition device adapts to surface reflection characteristic image acquisition of different plates, and the detection accuracy and the detection efficiency are improved.

Description

Technical Field

[0001] This utility model relates to a scanning device, and more particularly to a highly adaptable linear array scanning device for large-size three-dimensional plates. Background Technology

[0002] With the increasing automation of industrial development, China has become one of the most active regions in the world for machine vision development. People have increasingly higher requirements for the surface quality of industrial products, and traditional manual visual inspection of product surface quality is gradually being replaced by automated visual inspection. However, factors such as the light source of visual inspection machines can cause instability, and how to maximize the stability of these machines has become a concern for many companies.

[0003] Light sources can enhance image features and defects, weaken the effects of interference and background images, and negatively impact the quality of input data. To reduce the impact of external light on the stability of the vision system, the influence of external light sources can be shielded by adding additional light sources. Because LED light sources significantly outperform other light sources in terms of light source uniformity, which has a decisive influence on the quality of acquired images, LED light sources should be prioritized for additional light sources. Generally, it is essential not only to select the type of light source for each specific application but also to configure the light source according to the actual natural environment. Therefore, it is crucial that the experimental equipment has the ability to flexibly adjust the height and angle of the light source.

[0004] Existing visual detectors are highly sensitive to environmental conditions; different lighting conditions can significantly affect the performance of the device. Strong light can cause sensor signal distortion, while low light environments can make image acquisition difficult, thereby reducing recognition accuracy. Utility Model Content

[0005] The purpose of this invention is to overcome the defects of the existing technology and provide a highly adaptable linear array scanning device for large-size three-dimensional plates. By freely adjusting the object distance of the linear array camera and the illumination angle and height of the light source, it can adapt to the image acquisition of different surface reflection characteristics of the plates, avoid image shadows, and ensure sufficient illumination within the field of view, thereby improving detection accuracy and efficiency.

[0006] The purpose of this utility model is achieved as follows: A highly adaptable linear scanning device for large-size three-dimensional plates includes a Y-axis linear synchronization module and a frame assembly; the Y-axis linear synchronization module is slidably connected to the frame assembly; the Y-axis linear synchronization module includes a line scan camera, a camera position adjustment mechanism, a light source fixture, and a light source; the frame assembly includes an upper frame, a lower frame, a plate conveying device, a motor, and a slide; the line scan camera is mounted on the camera adjustment mechanism via a camera connector; the light source fixture is connected to the camera position adjustment mechanism via fasteners; the light source is disposed on the light source fixture; the upper frame is fixed above the lower frame via fasteners; the slide is disposed above the upper frame parallel to both sides of the Y-axis; the camera position adjustment mechanism is connected to the slide via a lead screw connector; the slide is driven by the motor to move the camera position adjustment mechanism along the Y-axis direction; the plate conveying device is disposed on the lower frame.

[0007] As a further limitation of this utility model, the camera position adjustment mechanism includes an X-axis adjustment mechanism and a Z-axis adjustment mechanism; the X-axis adjustment mechanism includes an X-axis lead screw connector one, an X-axis lead screw connector two, an X-axis lead screw knob, an X-axis lead screw, and an X-axis connecting plate; the Z-axis adjustment mechanism includes a Z-axis lead screw knob, a Z-axis lead screw connector, a Z-axis connecting plate, a Z-axis lead screw, and a camera connector;

[0008] The X-axis lead screw connector one and X-axis lead screw connector two are respectively fixed to the left and right ends of the X-axis connecting plate by threaded fasteners; the X-axis lead screw passes through the through holes on the side plates at both ends of the X-axis connecting plate and is connected to the X-axis lead screw knob; the Z-axis connecting plate is fixedly connected to the Z-axis lead screw connector by threaded fasteners, and the Z-axis lead screw passes through the through holes on the upper and lower side plates of the Z-axis connecting plate and is connected to the Z-axis lead screw knob; the line scan camera is mounted on the Z-axis lead screw through a camera connector.

[0009] As a further limitation of this utility model, the light source fixture includes a light source height adjustment connector, a light source connector, and a light source angle adjustment connector; the upper end of the light source height adjustment connector is connected to the Z-axis connecting plate by a threaded fastener, and a T-shaped through groove along the Z-axis direction is provided at the connection between the light source height adjustment connector and the Z-axis connecting plate; the light source connector is connected to the light source height adjustment connector by a screw fastener; a T-shaped through groove along the Z-axis direction is provided at the connection between the light source connector and the light source height adjustment connector; four through grooves along the Y-axis direction are provided on the horizontal surface of the light source connector; the light source connector connects the light source height adjustment connector and the overall light source, allowing the overall light source to move along the Y-axis.

[0010] As a further limitation of this utility model, the light source includes two linear light sources and two supplementary light sources; four T-slots are opened on the horizontal plane of the linear light source along the X-axis direction, and one of the linear light sources is fixedly connected to the light source connector by a threaded fastener; the linear light source is connected to both ends of the light source angle adjustment connector by two sets of "V" shaped bolts; the supplementary light source is connected to the central boss of the light source angle adjustment connector by two sets of coaxial bolts.

[0011] As a further limitation of this utility model, acrylic plates are provided on the left and right sides of the upper frame.

[0012] The present invention adopts the above technical solution, and compared with the prior art, the beneficial effects are as follows: 1) The device is equipped with a camera position adjustment mechanism, which can freely adjust the object distance of the line scan camera to adapt to boards of different widths, heights, and various placement positions. 2) The light source fixture of the device is connected to the camera position adjustment mechanism through fasteners; the light source is set on the light source fixture; the illumination angle and height of the light source can be adjusted to adapt to the surface reflection characteristics of different boards for image acquisition, avoid image shadows, and ensure sufficient illumination within the field of view. The present invention uses machine vision inspection to replace manual visual inspection, reducing worker pressure and improving inspection accuracy and efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the utility model.

[0014] Figure 2 This utility model presents a schematic diagram of a camera position adjustment structure.

[0015] Figure 3 This utility model presents a schematic diagram of a light source fixture structure.

[0016] Figure 4 This utility model presents a schematic diagram of its light source structure.

[0017] The components include: 1. Linear array camera; 2. Camera position adjustment mechanism; 2-1 X-axis lead screw connector 1; 2-2 X-axis lead screw connector 2; 2-3 X-axis lead screw knob; 2-4 X-axis lead screw; 2-5 X-axis connecting plate; 2-6 Z-axis lead screw knob; 2-7 Z-axis lead screw connector; 2-8 Z-axis connecting plate; 2-9 Z-axis lead screw; 2-10 Camera connector; 3. Light source fixture; 3-1 Light source height adjustment connector; 3-2 Light source connector; 3-3 Light source angle adjustment connector; 4. Light source; 4-1 Linear light source; 4-2 Supplementary light source; 5. Upper frame; 6. Lower frame; 7. Sheet material conveying device; 8. Acrylic sheet; 9. Motor; 10. Slide. Detailed Implementation

[0018] like Figure 1The diagram illustrates a highly adaptable linear scanning device for large-size 3D panels, comprising a Y-axis linear synchronization module and a frame assembly. The Y-axis linear synchronization module is slidably connected to the frame assembly. The Y-axis linear synchronization module includes a line scan camera 1, a camera position adjustment mechanism 2, a light source fixture 3, and a light source 4. The frame assembly includes an upper frame 5, a lower frame 6, a panel conveying device 7, a motor 9, and a slide 10. The line scan camera 1 is mounted on the camera adjustment mechanism 2 via camera connectors 2-10. The light source fixture 3 is connected to the camera position adjustment mechanism 2 via fasteners. The light source 4 is mounted on the light source fixture 3. The upper frame 5 is fixed above the lower frame 6 via fasteners. The slide 10 is positioned above the upper frame 5, parallel to both sides of the Y-axis. The camera position adjustment mechanism 2 is connected to the slide 10 via a lead screw connector. The slide 10 is driven by the motor 9 to move the camera position adjustment mechanism 2 along the Y-axis. The panel conveying device 7 is mounted on the lower frame 6. Acrylic panels 8 are provided on the left and right sides of the upper frame 5.

[0019] like Figure 2 As shown, the camera position adjustment mechanism 2 includes an X-axis adjustment mechanism and a Z-axis adjustment mechanism; the X-axis adjustment mechanism includes an X-axis lead screw connector 1 2-1, an X-axis lead screw connector 2-2, an X-axis lead screw knob 2-3, an X-axis lead screw 2-4, and an X-axis connecting plate 2-5; the Z-axis adjustment mechanism includes a Z-axis lead screw knob 2-6, a Z-axis lead screw connector 2-7, a Z-axis connecting plate 2-8, a Z-axis lead screw 2-9, and a camera connector 2-10;

[0020] X-axis lead screw connector 1 2-1 and X-axis lead screw connector 2-2 are respectively fixed to the left and right ends of X-axis connecting plate 2-5 by threaded fasteners; X-axis lead screw 2-4 passes through the through holes on the side plates at both ends of X-axis connecting plate 2-5 and is connected to X-axis lead screw knob 2-3; Z-axis connecting plate 2-8 is fixedly connected to Z-axis lead screw connector 2-7 by threaded fasteners, and Z-axis lead screw 2-9 passes through the through holes on the upper and lower side plates of Z-axis connecting plate 2-8 and is connected to Z-axis lead screw knob 2-6; Line scan camera 1 is mounted on Z-axis lead screw 2-9 through camera connector 2-10.

[0021] The X-axis adjustment mechanism, by moving the line scan camera 1, keeps the workpiece centered in the image area, ensuring the integrity of the image of the workpiece being inspected. When the workpiece is positioned biased towards the positive X-axis, rotating the X-axis lead screw knob 2-3 clockwise moves the Z-axis lead screw connector 2-7 towards the positive X-axis; the Z-axis connecting plate 2-8 and the Z-axis lead screw 2-9 move together with the Z-axis lead screw connector 2-7 towards the positive X-axis, and the line scan camera 1 moves towards the positive X-axis, thus adjusting the horizontal position of the line scan camera 1 above the workpiece. Similarly, when the workpiece is positioned biased towards the negative X-axis, the operation is reversed.

[0022] The Z-axis adjustment mechanism precisely adjusts the camera object distance via a high-precision lead screw, allowing the device to adapt to lenses of various focal lengths, ensuring focused imaging and easy adjustment of the field of view to accommodate various sizes of sheet materials. When the sheet material height is higher than the light source height, rotating the Z-axis lead screw knob 2-6 clockwise causes the Z-axis lead screw 2-9 to move the line scan camera 1 in the positive Z-axis direction, thus adjusting the distance between the line scan camera and the sheet material.

[0023] like Figure 3 As shown, the light source fixture 3 includes a light source height adjustment connector 3-1, a light source connector 3-2, and a light source angle adjustment connector 3-3. The upper end of the light source height adjustment connector 3-1 is connected to the Z-axis connecting plate 2-8 via a threaded fastener. A T-shaped through groove along the Z-axis is provided at the connection between the light source height adjustment connector 3-1 and the Z-axis connecting plate 2-8. This allows the position of the overall light source to be adjusted along the positive and negative directions of the Z-axis when facing plates of different thicknesses, thereby achieving sufficient illumination within the field of view and ensuring complete imaging of the plate.

[0024] The light source connector 3-2 is connected to the light source height adjustment connector 3-1 by screw fasteners; a T-shaped through groove is opened at the connection between the light source connector 3-2 and the light source height adjustment connector 3-1 along the Z-axis direction; so that when the height of the board is slightly higher than the overall light source, the position of the light source connector 3-2 can be finely adjusted along the Z-axis direction to achieve sufficient illumination within the field of view and ensure complete imaging of the board.

[0025] like Figure 4 As shown, the light source 4 includes two linear light sources 4-1 and two supplementary light sources 4-2, ensuring that there are no shadows in the field of view of the line scan camera 1 and that the illumination is sufficient and uniform. The light source connector 3-2 connects the light source height adjustment connector 3-1 to the overall light source, allowing the overall light source to move along the Y-axis. Four through slots are opened on the horizontal surface of the light source connector 3-2 along the Y-axis direction. Four T-slots are opened on the horizontal surface of the linear light source 4-1 along the X-axis direction. One of the linear light sources 4-1 is fixedly connected to the light source connector 3-2 by threaded fasteners. Specifically, two threaded fasteners are used to pass through the through slots of the light source connector 3-2 and the T-slots of the linear light source 4-1 to fix the light source connector 3-2 and the linear light source (4-1), so that the overall light source can provide sufficient illumination for the entire Y-axis movement of the line scan camera 1.

[0026] The linear light source 4-1 is connected to both ends of the light source angle adjustment connector 3-3 via two sets of "V"-shaped bolt fasteners. When measuring irregularly shaped plates, the illumination angle of the light source can be adjusted by rotating the linear light source 4-1 around the bolt fasteners to adapt to the surface reflection characteristics of different plates. The linear light source 4-1 illuminates from one side of the positive half-axis to the negative half-axis and from the other side of the negative half-axis to the positive half-axis. The area illuminated by the overlapping parts of the linear light source 4-1 is brightest directly below the linear scan camera, reducing the phenomenon of shadows formed on the irregularly shaped protruding parts in the middle of the plate due to uneven lighting.

[0027] The supplementary light source 4-2 is connected to the central boss of the light source angle adjustment connector 3-3 through two sets of coaxial bolt fasteners; by manually rotating the supplementary light source 4-2 around the coaxial bolt fasteners, the supplementary light source can provide light to both sides of the plate parallel to the Y-axis, ensuring that the scanned area is sufficiently and uniformly illuminated.

[0028] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A highly adaptable linear array scanning device for large-size three-dimensional plates, characterized in that, The system includes a Y-axis linear synchronization module and a frame assembly; the Y-axis linear synchronization module is slidably connected to the frame assembly; the Y-axis linear synchronization module includes a line scan camera (1), a camera position adjustment mechanism (2), a light source fixture (3), and a light source (4); the frame assembly includes an upper frame (5), a lower frame (6), a sheet metal conveying device (7), a motor (9), and a slide (10); the line scan camera (1) is mounted on the camera position adjustment mechanism (2) via camera connectors (2-10); the light source fixture (3) is connected to the camera position adjustment mechanism (2) via fasteners. The light source (4) is mounted on the light source fixture (3); the upper frame (5) is fixed above the lower frame (6) by fasteners; the slide (10) is mounted on both sides of the upper frame (5) parallel to the Y-axis; the camera position adjustment mechanism (2) is connected to the slide (10) by a lead screw connector; the slide (10) is driven by the motor (9) to move the camera position adjustment mechanism (2) along the Y-axis; the plate conveying device (7) is mounted on the lower frame (6); acrylic plates (8) are mounted on the left and right sides of the upper frame (5). The camera position adjustment mechanism (2) includes an X-axis adjustment mechanism and a Z-axis adjustment mechanism; the X-axis adjustment mechanism includes an X-axis lead screw connector 1 (2-1), an X-axis lead screw connector 2 (2-2), an X-axis lead screw knob (2-3), an X-axis lead screw (2-4), and an X-axis connecting plate (2-5); the Z-axis adjustment mechanism includes a Z-axis lead screw knob (2-6), a Z-axis lead screw connector (2-7), a Z-axis connecting plate (2-8), a Z-axis lead screw (2-9), and a camera connector (2-10); The X-axis lead screw connector 1 (2-1) and X-axis lead screw connector 2 (2-2) are respectively fixed to the left and right ends of the X-axis connecting plate (2-5) by threaded fasteners; the X-axis lead screw (2-4) passes through the through holes on the side plates at both ends of the X-axis connecting plate (2-5) and is connected to the X-axis lead screw knob (2-3); the Z-axis connecting plate (2-8) is fixedly connected to the Z-axis lead screw connector (2-7) by threaded fasteners; the Z-axis lead screw (2-9) passes through the through holes on the upper and lower side plates of the Z-axis connecting plate (2-8) and is connected to the Z-axis lead screw knob (2-6); the line scan camera (1) is mounted on the Z-axis lead screw (2-9) through the camera connector (2-10); The light source fixture (3) includes a light source height adjustment connector (3-1), a light source connector (3-2), and a light source angle adjustment connector (3-3). The upper end of the light source height adjustment connector (3-1) is connected to the Z-axis connecting plate (2-8) by a threaded fastener. A T-shaped through groove along the Z-axis is provided at the connection between the light source height adjustment connector (3-1) and the Z-axis connecting plate (2-8). The light source connector (3-2) is connected to the light source height adjustment connector (3-1) by a screw fastener. A T-shaped through groove along the Z-axis is provided at the connection between the light source connector (3-2) and the light source height adjustment connector (3-1). Four through grooves along the Y-axis are provided on the horizontal surface of the light source connector (3-2). The light source connector (3-2) connects the light source height adjustment connector (3-1) and the overall light source, so that the overall light source moves along the Y-axis.

2. The highly adaptable linear scanning device for large-size three-dimensional plates according to claim 1, characterized in that, The light source (4) includes two linear light sources (4-1) and two supplementary light sources (4-2); four T-slots are opened on the horizontal plane of the linear light source (4-1) along the X-axis direction, and one of the linear light sources (4-1) is fixedly connected to the light source connector (3-2) by threaded fasteners; the linear light source (4-1) is connected to both ends of the light source angle adjustment connector (3-3) by two sets of "V" shaped bolts; the supplementary light source (4-2) is connected to the central boss of the light source angle adjustment connector (3-3) by two sets of coaxial bolts.

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