A machine vision-based chip detector

Abstract

The application provides a kind of wood chip detection machine based on machine vision, including box, the outer surface of the box is equipped with conveying cavity, the inner side of the box is fixedly connected with fixed frame, the surface of the fixed frame is equipped with conveying belt, the inner side of the box is close to the upper end of conveying belt and is equipped with deviation rectifying structure, the deviation rectifying structure includes rotating head that is rotatably connected to the inside of the box, the lower end of the rotating head is fixedly connected with deviation rectifying plate, the inner side surface of the box is fixedly connected with fixed plate respectively at the two sides of deviation rectifying plate, the fixed plate is connected with arc-shaped rod between deviation rectifying plate, the fixed plate is connected with connecting spring between deviation rectifying plate.The application solves the problem that the existing wood chip detection machine exists in the process of conveying wood chip, and the posture is not correct, because the posture is straight during machine vision training, but during conveying, some wood chips exist posture deviation problem, which will affect the detection result, can bring better detection effect.

Description

Technical Field

[0001] This utility model relates to the field of wood chip inspection technology, and more specifically, to a wood chip inspection machine based on machine vision. Background Technology

[0002] In industries such as wood processing, papermaking, and biomass energy, the quality and specifications of wood chips directly affect subsequent production processes and product quality. Traditional manual sorting methods are inefficient, costly, and susceptible to subjective factors, making it difficult to meet the precision and speed requirements of modern production. With the development of machine vision and artificial intelligence technologies, automated sorting equipment based on visual inspection is gradually becoming a key solution for industry upgrades, and various types of machine vision inspection solutions are currently available.

[0003] The authorization announcement number CN221069998U discloses a continuous feeding mechanism for a clamp inspection machine based on machine vision. This utility model, through the cooperation of a detection worktable, turntable, magnetic fixing seat, clamp placement slot, support assembly, support frame, conveying assembly, mechanical claw, vibrating feeder, and 2D industrial probe, can transport clamps into the clamp placement slot through two feed belts, thereby enabling the detection of two clamps at the same time, thus improving the detection efficiency of clamps.

[0004] In existing technologies, there is a problem of incorrect posture during the conveying of wood chips. Although the posture is straight during machine vision training, some wood chips may deviate during conveying, which will affect the detection results. Therefore, we make improvements to this problem and propose a wood chip inspection machine based on machine vision. Utility Model Content

[0005] The purpose of this invention is to address the problem of incorrect posture during the transport of wood chips in existing wood chip inspection machines. Although the posture is straight during machine vision training, some wood chips may deviate during transport, which affects the inspection results.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] A machine vision-based wood chip inspection machine is proposed to improve the above-mentioned problems.

[0008] The application is as follows:

[0009] A machine vision-based wood chip inspection machine includes a housing with a conveying cavity on its outer surface. A fixed frame is fixedly connected to the inner side of the housing, and a conveyor belt is wound around the surface of the fixed frame. A correction structure is provided on the inner side of the housing near the upper end of the conveyor belt. The correction structure includes a rotating head rotatably connected to the inside of the housing, a correction plate fixedly connected to the lower end of the rotating head, and fixed plates fixedly connected to both sides of the inner surface of the housing corresponding to the correction plate. An arc-shaped rod connects the fixed plate and the correction plate, and a connecting spring connects the fixed plate and the correction plate.

[0010] As a preferred technical solution of this application, the inside of the fixed frame is rotatably connected to the two ends of the conveyor belt, and the outer surface of the fixed frame is fixedly connected to one end of a set of rollers. The outer surface of the box is connected to a display screen and control buttons respectively, and the inner side of the box is fixedly connected to the upper end of the conveyor belt. The conveyor belt conveys by rotating the rollers driven by the conveyor motor. The visual inspection camera is used to visually inspect the wood chips.

[0011] As a preferred technical solution of this application, the outer surface of the correction plate is rotatably connected to a rotating shaft, and the outer surface of the rotating shaft is fixedly connected to a correction shaft.

[0012] As a preferred technical solution of this application, the rotating head is rotatably connected to the housing through a bearing, the correction plate is rotatably connected to the housing through the rotating head, one end of the arc-shaped rod is fixedly connected to the correction plate, the other end of the arc-shaped rod passes through the fixed plate, and the arc-shaped rod and the fixed plate are slidably connected.

[0013] As a preferred technical solution of this application, the arc rod is an arc-shaped structure, and the axis of the arc is the rotation axis of the rotating head. The number of the fixed plate, the arc rod and the connecting spring are two sets and distributed in a ring array. The number of the correction structure is two sets and distributed symmetrically. The lower end of the correction plate is located at the upper end of the conveyor belt, and the distance between the two is less than the thickness of the detected wood chip.

[0014] As a preferred technical solution of this application, the two ends of the rotating shaft are embedded inside the correction plate, and the rotating shaft forms a rotational connection with the correction plate through bearings, and the correction shaft rotates with the rotation of the rotating shaft.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In the scheme of this application:

[0017] Through the action of the correction structure, the wood chips are conveyed by the conveyor belt during use, and the correction plate corrects the posture of the wood chips, making the wood chips tend to be straight. This makes the final inspection results by the visual inspection camera more accurate. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of a machine vision-based wood chip inspection machine provided in this application;

[0019] Figure 2 A schematic diagram of a partially cut structure of a machine vision-based wood chip inspection machine provided in this application;

[0020] Figure 3 A partial structural diagram of the correction structure of a machine vision-based wood chip inspection machine provided in this application;

[0021] Figure 4 This application provides a machine vision-based wood chip inspection machine. Figure 3 A magnified view of a portion of the image;

[0022] Figure 5 This is a partial structural diagram of the internal structure of a machine vision-based wood chip inspection machine provided in this application, cut open.

[0023] The image shows:

[0024] 1. Housing; 2. Conveying chamber; 3. Fixing frame; 4. Conveyor belt; 5. Correction structure; 51. Rotating head; 52. Correction plate; 53. Fixing plate; 54. Arc rod; 55. Connecting spring; 56. Rotating shaft; 57. Correction shaft; 6. Rotating roller; 7. Conveyor motor; 8. Display screen; 9. Control buttons; 10. Vision inspection camera. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0026] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely illustrates some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. It should be noted that, unless otherwise specified, the embodiments, features, and technical solutions in the embodiments of this utility model can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] like Figure 1-5 As shown, this embodiment proposes a machine vision-based wood chip inspection machine, including a housing 1. A conveying cavity 2 is formed on the outer surface of the housing 1. A fixing frame 3 is fixedly connected to the inner side of the housing 1. A conveyor belt 4 is wound around the surface of the fixing frame 3. A correction structure 5 is provided on the inner side of the housing 1 near the upper end of the conveyor belt 4. The correction structure 5 includes a rotating head 51 rotatably connected inside the housing 1. A correction plate 52 is fixedly connected to the lower end of the rotating head 51. Fixing plates 53 are fixedly connected to both sides of the correction plate 52 on the inner surface of the housing 1. An arc-shaped rod 54 connects the fixing plate 53 and the correction plate 52. A connecting spring 55 connects the two ends of the conveyor belt 4; a rotating roller 6 is rotatably connected inside the fixed frame 3 corresponding to both ends of the conveyor belt 4; a conveyor motor 7 is fixedly connected to one end of a set of rotating rollers 6 on the outer surface of the fixed frame 3; a display screen 8 and control buttons 9 are respectively connected to the outer surface of the box 1; a vision inspection camera 10 is fixedly connected to the upper end of the conveyor belt 4 on the inner side of the box 1; the conveyor belt 4 is conveyed by rotating rollers 6 driven by the conveyor motor 7; the vision inspection camera 10 is used to perform visual inspection on the wood chips; a rotating shaft 56 is rotatably connected to the outer surface of the correction plate 52; a correction shaft 57 is fixedly connected to the outer surface of the rotating shaft 56.

[0029] The rotating head 51 is rotatably connected to the housing 1 via a bearing. The correction plate 52 is rotatably connected to the housing 1 via the rotating head 51. One end of the arc-shaped rod 54 is fixedly connected to the correction plate 52, and the other end of the arc-shaped rod 54 passes through the fixed plate 53. The arc-shaped rod 54 and the fixed plate 53 are slidably connected. The arc-shaped rod 54 has a circular arc structure, and the axis of the arc is the rotation axis of the rotating head 51. There are two sets of correction plates 52 corresponding to the fixed plate 53, the arc-shaped rod 54, and the connecting spring 55, which are arranged in a ring array. There are two sets of correction structures 5, which are symmetrically distributed. The lower end of the correction plate 52 is located at the upper end of the conveyor belt 4, and the distance between them is less than the thickness of the detected wood chip. The two ends of the rotating shaft 56 are embedded inside the correction plate 52, and the rotating shaft 56 is rotatably connected to the correction plate 52 via a bearing. The correction shaft 57 rotates with the rotation of the rotating shaft 56.

[0030] In this embodiment, during use, the wood chips can be conveyed by the conveyor belt 4, which allows the correction plate 52 to correct the posture of the wood chips, thereby making the wood chips tend to be straight, and making the final detection result by the visual inspection camera 10 more accurate.

[0031] In summary, the working principle of this utility model is as follows:

[0032] During use, when the wood chips are placed on the conveyor belt 4, the conveyor motor 7 drives the rotating roller 6 to rotate. The rotation of the rotating roller 6 causes the conveyor belt 4 to move along with the conveyor belt. During the process of being conveyed by the conveyor belt 4, the wood chips are guided and adjusted in posture by two sets of inwardly tilting correction plates 52, so that the wood chips are conveyed in a more straight state. This makes the inspection vision camera 10 more accurate in inspecting the surface of the wood chips.

[0033] When larger wood chips are being conveyed, the wood chips will squeeze the correction plate 52 and roll on the correction shaft 57. At the same time, the correction shaft 57 and the correction plate 52 will rotate clockwise. During the rotation, the correction plate 52 compresses the connecting spring 55, which will increase the opening between the two sets of correction plates 52, making it easier to move and convey the wood chips. At the same time, the orientation of the wood chips can still be guided and adjusted, thereby achieving the effect of adjusting the position of the wood chips. This makes the detection results of the visual inspection camera 10 more accurate and effectively improves the accuracy of the detection.

[0034] It should be understood that in this application, all rotating, sliding, meshing, belt-driven and other moving parts are well lubricated and not prone to slippage or wear, and each part is provided with a corresponding protective shell. However, in the accompanying drawings of this application, the connection state of each moving part is not shown. It should also be understood that all parts in this application are made of metal or plastic materials with suitable strength in the relevant field to ensure that their structural rigidity meets the actual requirements.

[0035] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A machine vision-based wood chip inspection machine, comprising a housing (1), wherein a conveying cavity (2) is formed on the outer surface of the housing (1), and a fixing frame (3) is fixedly connected to the inner side of the housing (1), and a conveyor belt (4) is wound around the surface of the fixing frame (3), characterized in that, A correction structure (5) is provided on the inner side of the box (1) near the upper end of the conveyor belt (4). The correction structure (5) includes a rotating head (51) rotatably connected inside the box (1). A correction plate (52) is fixedly connected to the lower end of the rotating head (51). Fixing plates (53) are fixedly connected to the inner surface of the box (1) on both sides corresponding to the correction plate (52). An arc rod (54) is connected between the fixing plate (53) and the correction plate (52). A connecting spring (55) is connected between the fixing plate (53) and the correction plate (52).

2. The wood chip inspection machine based on machine vision according to claim 1, characterized in that, The fixed frame (3) has rotating rollers (6) rotatably connected to both ends of the conveyor belt (4) inside. The outer surface of the fixed frame (3) is fixedly connected to one end of a set of rotating rollers (6). The outer surface of the box (1) is connected to a display screen (8) and control buttons (9). The inner side of the box (1) is fixedly connected to the upper end of the conveyor belt (4). The conveyor belt (4) is conveyed by rotating rollers (6) driven by the conveyor motor (7). The visual inspection camera (10) is used to visually inspect the wood chips.

3. A machine vision-based wood chip inspection machine according to claim 1, characterized in that, The outer surface of the correction plate (52) is rotatably connected to a rotating shaft (56), and the outer surface of the rotating shaft (56) is fixedly connected to a correction shaft (57).

4. A machine vision-based wood chip inspection machine according to claim 1, characterized in that, The rotating head (51) is rotatably connected to the housing (1) via a bearing. The correction plate (52) is rotatably connected to the housing (1) via the rotating head (51). One end of the arc rod (54) is fixedly connected to the correction plate (52), and the other end of the arc rod (54) passes through the fixed plate (53). The arc rod (54) and the fixed plate (53) are slidably connected.

5. A machine vision-based wood chip inspection machine according to claim 4, characterized in that, The arc rod (54) is an arc-shaped structure, and the axis of the arc is the rotation axis of the rotating head (51). The number of the set of the correction plate (52) corresponding to the fixed plate (53), the arc rod (54) and the connecting spring (55) are two sets and distributed in a ring array. The number of the correction structure (5) is two sets and symmetrically distributed. The lower end of the correction plate (52) is located at the upper end of the conveyor belt (4), and the distance between the two is less than the thickness of the detected wood chip.

6. A machine vision-based wood chip inspection machine according to claim 3, characterized in that, The two ends of the rotating shaft (56) are embedded inside the correction plate (52), and the rotating shaft (56) is rotatably connected to the correction plate (52) through bearings. The correction shaft (57) rotates following the rotation of the rotating shaft (56).

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