Shaving board surface defect detection device

Abstract

The utility model relates to the technical field of shaving board detection, in particular to a shaving board surface defect detection device which comprises a conveying belt, a support, a camera, a rotating piece, a moving piece, a connecting strip and a lifting mechanism. The multiple rotating parts are arranged around the camera, one end of each rotating part is rotationally connected with the support, the other end of each rotating part inclines downwards, and a plurality of light sources are arranged on the rotating parts; the moving part is arranged above the center surrounded by the plurality of rotating parts; the connecting strips and the rotating pieces are the same in number and are in one-to-one correspondence, and the two ends of the connecting strips are rotationally connected with the supports and the corresponding rotating pieces correspondingly; the lifting mechanism is arranged on the support and connected with the moving part. The moving parts can ascend and descend through the lifting mechanisms, and the moving parts move up and down to drive the corresponding rotating parts to rotate through the connecting strips. According to the utility model, the problems that some defects of photos shot by the existing detection device are not obviously displayed and are difficult to identify can be solved.

Description

Technical Field

[0001] This utility model relates to the field of particleboard testing technology, specifically to a particleboard surface defect detection device. Background Technology

[0002] Particleboard, also known as chipboard or chipboard, is a type of engineered wood product, primarily made from wood chips, wood flakes, and other wood fiber materials bonded together under pressure and with adhesives. Due to its low price and resistance to warping when exposed to moisture, particleboard is widely used in building decoration. The deformation capacity and warping of particleboard are important indicators of its quality, crucial for ensuring product stability and aesthetics. In practical applications, particleboard may deform or warp due to uneven stress, changes in environmental humidity, etc. This not only affects product performance but may also threaten structural safety. Therefore, during the particleboard pressing process, its outer surface must be ensured to be dense and flat. Quality inspection of the outer surface is also necessary during product manufacturing. However, relying solely on manual visual inspection makes it difficult to detect these defects, leading to oversights and compromising batch quality.

[0003] Therefore, patent application number CN202221706410.4 discloses a particleboard surface defect detection device. This device uses a camera to photograph the particleboard surface under the illumination of a first light source, thus obtaining a photograph and identifying surface defects. By setting a second light source with a different illumination direction than the first light source, the surface defects are made more visible under the illumination of two sets of light sources with different directions. Although the two sets of light sources at different angles in this patent can improve defect identification to some extent, the limited number of these light sources means that some defects are not clearly displayed in the photograph and are easily missed. Furthermore, the illumination angles of the light sources are not adjustable, failing to maximize defect visibility. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a particleboard surface defect detection device to solve the problem that the photos taken by existing detection devices do not show some defects clearly enough and are not easy to identify.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A particleboard surface defect detection device includes a conveyor belt, a bracket mounted on the conveyor belt, and a camera mounted on the bracket. It also includes rotating components, moving components, connecting strips, and a lifting mechanism. Multiple rotating components are arranged around the camera, with one end rotatably connected to the bracket and the other end tilted downwards. Each rotating component has several light sources. The moving component is positioned above the center of the rotating components. The number of connecting strips is the same as the number of rotating components and they correspond one-to-one. Both ends of each connecting strip are rotatably connected to the bracket and the corresponding rotating component. The lifting mechanism is mounted on the bracket and connected to the moving component. The lifting mechanism can raise and lower the moving component, and the vertical movement of the moving component drives the corresponding rotating component to rotate via the connecting strips.

[0007] As a further embodiment of this utility model: the support includes a U-shaped frame and a polygonal column; the two open ends of the U-shaped frame are respectively connected to the two sides of the conveyor belt; the upper end of the polygonal column is connected to the closed end of the U-shaped frame, and the camera is mounted on the lower end face of the polygonal column; each side of the polygonal column is rotatably connected to a rotating component.

[0008] As a further embodiment of this utility model: wherein the movable component is movably sleeved on the polygonal column, the cross-sectional shape of the movable component and the polygonal column are adapted to each other, and each side of the movable component is rotatably connected to a connecting strip.

[0009] As a further embodiment of this utility model: wherein the rotating component is arc-shaped, and all the rotating components surround to form a dome surface; the concave surface of the rotating component faces downward, and there are multiple light sources, which are arranged vertically along the concave surface of the rotating component.

[0010] As a further improvement of this utility model, the light source is a cold light source with adjustable color temperature.

[0011] As a further embodiment of this utility model: the lifting mechanism includes a support bar and two electric push rods, with the moving part connected to the middle of the support bar; the fixed ends of the two electric push rods are respectively installed on both sides of the bracket, and the movable ends of the two electric push rods are respectively fixedly connected to both ends of the support bar.

[0012] By adopting the above technical solution, this utility model will have the following beneficial effects:

[0013] This utility model provides a particleboard surface defect detection device. By arranging multiple rotating parts around the camera on the support and setting a light source on each rotating part, when the conveyor belt transports the particleboard to directly below the camera, these light sources can illuminate the particleboard surface from different directions, producing shadows and highlights, making the surface unevenness more obvious, thereby better revealing the pits, bumps or cracks on the particleboard surface, and thus making the defect photos taken by the camera more obvious.

[0014] Meanwhile, the lifting mechanism can raise and lower the moving parts. The moving parts move up and down, driving the corresponding rotating parts to rotate through the connecting strips, thereby adjusting the angle at which the light source illuminates the particleboard surface. By making multiple adjustments to select the appropriate incident angle, the contrast between shadows and brightness at the defects on the particleboard surface becomes more obvious, thus highlighting the defects and maximizing their visibility, making it easier to identify defects in photos. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the particleboard surface defect detection device described in an embodiment of the present invention;

[0017] Figure 2 for Figure 1 A front view of the particleboard surface defect detection device described in the embodiment;

[0018] Figure 3 for Figure 2 Sectional view at point A in the middle;

[0019] Figure 4 for Figure 1 Side view of the particleboard surface defect detection device described in the embodiment.

[0020] The correspondence between the labels and component names in the attached figures is as follows:

[0021] 1. Conveyor belt; 2. Support frame; 21. U-shaped frame; 22. Polygonal column; 3. Camera; 4. Rotating component; 5. Moving component; 6. Connecting bar; 7. Lifting mechanism; 71. Support bar; 72. Electric push rod; 8. Light source. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0023] Please refer to Figure 1-4 In one embodiment of the particleboard surface defect detection device of this utility model, the particleboard surface defect detection device includes a conveyor belt 1, a bracket 2 disposed on the conveyor belt 1, and a camera 3 mounted on the bracket 2; in addition, it also includes a rotating component 4, a moving component 5, a connecting strip 6, and a lifting mechanism 7.

[0024] Multiple rotating parts 4 are arranged around the camera 3. One end of the rotating part 4 is rotatably connected to the bracket 2, and the other end of the rotating part 4 is tilted downward. Several light sources 8 are provided on the rotating part 4. When the conveyor belt 1 transports the particleboard to directly below the camera 3, these light sources 8 can illuminate the surface of the particleboard from different directions, producing shadows and highlights, making the unevenness of the surface more obvious, thereby better revealing the depressions, bumps or cracks on the surface of the particleboard.

[0025] The movable component 5 is positioned above the center of a plurality of rotating components 4. The number of connecting strips 6 is the same as the number of rotating components 4 and they correspond one-to-one. The two ends of the connecting strips 6 are respectively rotatably connected to the bracket 2 and the corresponding rotating component 4. The lifting mechanism 7 is mounted on the bracket 2 and connected to the movable component 5. The movable component 5 can be raised or lowered by the lifting mechanism 7. The up and down movement of the movable component 5 drives the corresponding rotating component 4 to rotate through the connecting strips 6, thereby adjusting the angle at which the light source 8 illuminates the particleboard surface. By adjusting the angle of the light source 8 multiple times, the visibility of defects is maximized.

[0026] Specifically, the support 2 includes a U-shaped frame 21 and a polygonal column 22; the two ends of the opening of the U-shaped frame 21 are respectively fixed to both sides of the conveyor belt 1 by bolts; the upper end of the polygonal column 22 is welded to the closed end of the U-shaped frame 21, and a camera 3 is installed on the lower end face of the polygonal column 22. The camera 3 can take pictures of the particleboard conveyed by the conveyor belt 1; each side of the polygonal column 22 has a rotating component 4 connected to its lower edge by a hinge.

[0027] Specifically, the movable part 5 is movably sleeved on the polygonal column 22. The cross-sectional shape of the movable part 5 and the polygonal column 22 are compatible, both being regular hexagons. Each side of the movable part 5 has a connecting strip 6 connected to its lower edge via a hinge.

[0028] Specifically, the rotating component 4 is arc-shaped, and there is a gap between two adjacent rotating components 4. The gap gradually increases in the direction away from the polygonal column 22. All rotating components 4 surround to form a dome surface with multiple such gaps. The concave surface of the rotating component 4 faces downward, and there are multiple light sources 8. The multiple light sources 8 are arranged vertically along the concave surface of the rotating component 4. The illumination direction of all light sources 8 is perpendicular to the center of the dome surface, so that the light sources 8 on each rotating component 4 form a multi-angle illumination combination, thereby achieving all-round coverage and making it easier to discover hidden defects.

[0029] More specifically, the light source 8 adopts an adjustable color temperature cold light source 8, such as an adjustable color temperature LED cold light source 8. By mixing LED chips with different color temperatures (such as cool white light and warm white light), continuous adjustment of the color temperature can be achieved. Using light of different color temperatures to illuminate the particleboard surface can help highlight different defect types and make defects more noticeable. For example, cool white light is suitable for detecting cracks and dents, warm white light is suitable for detecting surface particles and micro-defects, neutral white light is suitable for comprehensive inspection, and blue and red light can be selected according to specific needs. The design of using a cold light source 8 can significantly reduce the impact on the particleboard caused by the temperature rise of the light source 8, such as material deformation, color change, and interference from the inspection environment.

[0030] Specifically, the lifting mechanism 7 includes a support bar 71 and two electric push rods 72. The middle part of the support bar 71 is sleeved on the polygonal column 22 and integrally formed with the movable part 5. The U-shaped frame 21 has vertical strip openings symmetrically opened on both sides. The two ends of the support bar 71 extend through the two strip openings to the outside of the U-shaped frame 21. The fixed ends of the two electric push rods 72 are respectively installed on the two outer sides of the open end of the U-shaped frame 21, and the movable ends of the two electric push rods 72 are respectively fixedly connected to the ends of the support bar 71 that extend out of the U-shaped frame 21. In use, the support bar 71 is driven to move up and down by the electric push rods 72, thereby raising and lowering the movable part 5.

[0031] The method of use or working principle of this utility model is as follows:

[0032] When the conveyor belt 1 conveys the particleboard past the support 2, the rotating part 4 surrounds the camera 3 set on the support 2. Therefore, the light source 8 on the rotating part 4 can illuminate the particleboard surface from different directions, producing shadows and highlights, making the unevenness of the surface more obvious, thus better revealing the pits, bumps or cracks on the particleboard surface, and making the defect photos taken by the camera 3 more obvious.

[0033] When surface defects of a batch of particleboard are difficult to identify through photographs, the support bar 71 is moved up and down by the electric push rod 72 to raise and lower the moving part 5. The up and down movement of the moving part 5 drives the corresponding rotating part 4 to rotate through the connecting bar 6, thereby adjusting the angle at which the light source 8 illuminates the particleboard surface. By making multiple adjustments to select a suitable incident angle, the contrast between shadows and brightness at the defects on the particleboard surface becomes more obvious, thus highlighting the defects and maximizing their visibility.

[0034] 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 the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for detecting surface defects of a particle board, comprising a conveyor belt (1) and a support (2) arranged on the conveyor belt (1) and a camera (3) mounted on the support (2); characterized in that, Also include rotating piece (4), moving piece (5), connecting strip (6) and lifting mechanism (7);The rotating piece (4) is provided with multiple, all the rotating piece (4) is arranged around the camera (3), one end of the rotating piece (4) is rotatably connected with the support (2), the other end of the rotating piece (4) is inclined downward, and a plurality of light sources (8) are arranged on the rotating piece (4);The moving piece (5) is arranged above the center of the rotating piece (4) around;The number of the connecting strip (6) is same as the number of the rotating piece (4) and is one-to-one corresponding, both ends of the connecting strip (6) are rotatably connected with the support (2) and the corresponding rotating piece (4) respectively;The lifting mechanism (7) is arranged on the support (2) and connected with the moving piece (5);The moving piece (5) can be lifted by the lifting mechanism (7), and the moving piece (5) moves up and down to drive the corresponding rotating piece (4) to rotate through the connecting strip (6).

2. The particle board surface defect detection apparatus according to claim 1, wherein, The support (2) includes a U-shaped frame (21) and a polygonal column (22);The opening ends of the U-shaped frame (21) are connected to both sides of the conveyor belt (1) respectively;The upper end of the polygonal column (22) is connected to the closed end of the U-shaped frame (21), and the lower end face of the polygonal column (22) is mounted with the camera (3);Each side of the polygonal column (22) is rotatably connected with one rotating piece (4).

3. The particle board surface defect detection apparatus according to claim 2, wherein, The moving piece (5) is movably sleeved on the polygonal column (22), the cross-sectional shape of the moving piece (5) and the polygonal column (22) is adapted, and each side of the moving piece (5) is rotatably connected with one connecting strip (6).

4. The particle board surface defect detection apparatus according to claim 1, wherein, The rotating piece (4) is arc-shaped, and all the rotating pieces (4) form a spherical top surface;The concave surface of the rotating piece (4) faces downward, and the light source (8) has multiple, multiple light sources (8) are arranged in up-down arrangement on the concave surface of the rotating piece (4).

5. The particle board surface defect detection apparatus according to claim 4, wherein The light source (8) adopts a cold light source (8) with adjustable color temperature.

6. The particle board surface defect detection apparatus according to claim 1, wherein, The lifting mechanism (7) includes a support strip (71) and two electric push rods (72), and the middle part of the support strip (71) is connected with the moving piece (5);The fixed ends of the two electric push rods (72) are mounted on both sides of the support (2) respectively, and the movable ends of the two electric push rods (72) are fixedly connected with both ends of the support strip (71).

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