Wood surface defect detection device

Abstract

The utility model provides a wood surface defect detection device and relates to the technical field of detection equipment. The device comprises a conveying belt mechanism, a sweeping mechanism and a visual inspection mechanism, wherein the sweeping mechanism and the visual inspection mechanism are sequentially arranged on the conveying belt mechanism in the conveying advancing direction. According to the device, wood is conveyed through the conveying belt mechanism, and dust and chippings deposited on the surface of the wood are swept through the sweeping mechanism before the wood reaches the position where the visual detection mechanism is located, so that the influence of the dust and the chippings on a defect detection result is eliminated to a certain extent; on the basis, the problem that an existing wood surface defect detection device cannot clean dust and chippings deposited on the surface of wood, and then misjudgment of a surface defect detection result is possibly caused is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a wood surface defect detection device. Background Art

[0002] With social progress and economic development, my country's timber consumption has increased annually, and consumers' expectations for timber quality are also rising. During the timber production process, it is necessary to filter out timber with various surface defects, such as slipknots, blue edges, cracks, heartwood, and dead knots, and distinguish these from well-formed timber. Conventional visual inspection devices are commonly used to detect timber surface defects. These devices utilize digital image processing and computer vision technologies, offering high detection speed and accuracy.

[0003] However, most current wood surface defect detection devices overlook a problem: dust and debris can easily form on the wood surface during the actual production, transportation, and storage of wood. If these dust and debris are not cleaned, they will likely lead to misjudgment of surface defect detection results after being captured by the visual inspection device, thereby adversely affecting production. For example, Chinese patent publication number CN212932357U provides a wood board surface defect detection device, which includes a support frame, a transmission mechanism, an inspection table, an image acquisition device, and a mobile inspection frame. The image acquisition device transmits the scanned image to a computer for post-processing and recognition, completing a wood board inspection process. However, the detection device is unable to clean the wood board surface before scanning the image, so that the deposited dust and debris will affect the inspection results. Utility Model Content

[0004] The purpose of the present invention is to provide a wood surface defect detection device to solve the problem mentioned in the above background technology that the existing wood surface defect detection device is unable to clean the dust and debris deposited on the wood surface, which is likely to cause misjudgment of the surface defect detection results.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] A device for detecting wood surface defects includes a conveyor belt mechanism, a cleaning mechanism, and a visual inspection mechanism. The cleaning mechanism and the visual inspection mechanism are sequentially arranged on the conveyor belt mechanism along the conveying direction. In this device, the wood is transported by the conveyor belt mechanism. Before the wood reaches the location of the visual inspection mechanism, the cleaning mechanism cleans dust and debris deposited on the wood surface, thereby largely eliminating the impact of dust and debris on defect detection results.

[0007] Furthermore, the cleaning mechanism includes an air-blowing cleaning mechanism and a brush-blowing cleaning mechanism, which are sequentially arranged along the conveying direction. The air-blowing cleaning mechanism performs the first cleaning, which removes dust and debris that are simply attached to the wood surface and reduces the workload of the brush-blowing cleaning mechanism. The brush-blowing cleaning mechanism performs the second cleaning, which removes more stubborn dust and debris on the wood surface. The two cleaning processes can achieve a better cleaning effect.

[0008] Furthermore, the air blowing cleaning mechanism includes an air blowing fan, which is installed on one of the sides of the upper surface of the conveyor belt mechanism. In practical applications, an air blowing fan with an adjustable air blowing angle is preferred so that the cleaning effect can be better controlled.

[0009] Furthermore, a collection box is mounted on the other side of the upper surface of the conveyor belt mechanism at the position corresponding to the air blowing fan. The side of the collection box facing the air blowing fan is open. The collection box can block and collect dust and debris blown up by the air blowing fan, thereby ensuring a good production environment as much as possible and reducing the workload and difficulty of subsequent cleaning. In actual application, a shield or other structure can be installed between the air blowing fan and the collection box to fully block the air blowing and cleaning process, thereby achieving better protection of the production environment.

[0010] Furthermore, the brush cleaning mechanism includes a lifting assembly and a brush. The lifting assembly is arranged above the conveyor belt mechanism, and the output end of the lifting assembly is connected to the brush. By providing the lifting assembly, the height position of the brush can be flexibly adjusted, thereby allowing the brush to clean wood of different thicknesses, thereby improving the applicability of the device.

[0011] Furthermore, the lifting assembly includes a drive motor, the output shaft of which is connected to a ball screw, and a brush is detachably connected to the slider of the ball screw. When the drive motor is activated, it drives the screw of the ball screw to rotate, thereby causing the slider of the ball screw to move up and down with the brush. Since the brush is detachably connected to the slider, it is easy to replace the brush.

[0012] Furthermore, a brush strip is provided below the conveyor belt mechanism, and the brush strip is in constant contact with the conveyor belt surface of the conveyor belt mechanism. After the brush cleans the wood surface, dust and debris are swept onto the conveyor belt surface of the conveyor belt mechanism, and the brush strip can clean the conveyor belt surface, thereby preventing dust and debris from remaining.

[0013] Further, a waste box is provided below the brush bar. Through the waste box, dust and debris on the conveyor belt surface cleaned by the brush bar can be collected, so that the ground or the table below the conveyor belt mechanism no longer need to be cleaned.

[0014] The beneficial effects achieved by the utility model are:

[0015] A wood surface defect detection device is provided with a conveyor belt mechanism, a cleaning mechanism and a visual detection mechanism. The cleaning mechanism can clean the wood surface before it reaches the position of the visual detection mechanism. Compared with existing wood surface defect detection devices, the utility model can eliminate the influence of dust and debris on defect detection results to a considerable extent by cleaning away dust and debris deposited on the wood surface, thereby helping to ensure smooth production and good results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the wood surface defect detection device according to an embodiment of the present utility model;

[0017] Figure 2 yes Figure 1 A magnified view of the structure at center A;

[0018] Figure 3 yes Figure 1 A magnified view of the structure at B in the middle;

[0019] In the figure: 1. Conveyor belt mechanism I; 2. Conveyor belt mechanism II; 3. Mounting plate III; 4. Visual inspection mechanism; 5. Collection box; 6. Mounting plate IV; 7. Brush strip; 8. Mounting plate I; 9. Blowing fan; 10. Mounting plate II; 11. Drive motor; 12. Ball screw; 13. Brush. DETAILED DESCRIPTION

[0020] To clearly illustrate the solution in the utility model, the following is further described with reference to the accompanying drawings:

[0021] Example 1

[0022] Please refer to Figures 1 to 3 This embodiment provides a wood surface defect detection device, comprising: a conveyor belt mechanism I1 and a conveyor belt mechanism II2 arranged in a front-to-rear manner; a cleaning mechanism is provided on conveyor belt mechanism I1, and a visual inspection mechanism 4 is provided on conveyor belt mechanism II2, along the conveying direction of the two conveyor belt mechanisms. The cleaning mechanism includes an air blowing cleaning mechanism and a brush cleaning mechanism, which are sequentially arranged along the conveying direction.

[0023] Specifically:

[0024] The air blowing cleaning mechanism includes a mounting plate Ⅰ8, which is fixedly mounted on one of the side edges of the upper surface of the conveyor belt mechanism Ⅰ1. A blowing fan 9 with an adjustable blowing angle is fixedly mounted on the inner side surface of the mounting plate Ⅰ8; a collecting box 5 is mounted on the other side edge of the upper surface of the conveyor belt mechanism Ⅰ1 at the corresponding position of the blowing fan 9, and the collecting box 5 is opened on the side facing the blowing fan 9.

[0025] The brush cleaning mechanism includes an L-shaped mounting plate Ⅱ10, which is fixedly mounted on one of the side edges of the upper surface of the conveyor mechanism Ⅰ1 behind the mounting plate Ⅰ8. A lifting assembly is fixedly mounted on the mounting plate Ⅱ10, and the output end of the lifting assembly is connected to the brush 13; wherein, the lifting assembly includes a drive motor 11 fixedly mounted on the upper end of the mounting plate Ⅱ10, and the output shaft of the drive motor 11 passes through the mounting plate Ⅱ10 and is connected to the ball screw 12, and the brush 13 is detachably connected to the slider of the ball screw 12 through a connecting rod.

[0026] In this embodiment, the visual inspection mechanism 4 is mounted above the conveyor mechanism II 2 via an L-shaped mounting plate III 3, which is fixedly attached to one of the side edges of the upper surface of the conveyor mechanism II 2. A brush strip 7 is provided below the conveyor mechanism I 1 via a mounting plate IV 6, maintaining constant contact with the conveyor belt surface.

[0027] Based on the above structure, the working principle of this embodiment is as follows:

[0028] The conveyor belt mechanism I1 and the conveyor belt mechanism II2 convey the wood. When the wood reaches the position of the air blowing cleaning mechanism on the conveyor belt mechanism I1, the air blowing fan 9 blows air toward the wood surface, so that the dust and debris that are simply attached to the wood surface are blown up and blocked and collected by the collection box 5. When the wood continues to move forward and passes the position of the brush cleaning mechanism, the brush 13 comes into contact with the wood surface, and then cleans away the more stubborn dust and debris on the wood surface, thereby completing the cleaning of the wood surface. The wood then continues to move forward to the position of the visual inspection mechanism 4 on the conveyor belt mechanism II2. The visual inspection mechanism 4 takes an image of the wood surface to facilitate defect detection and judgment. After the image is taken, the wood continues to move to the next process under the conveyance of the conveyor belt mechanism II2. Among them, by controlling the operation of the drive motor 11, the height position of the brush 13 can be adjusted, so that the brush 13 can clean wood of different thicknesses.

[0029] In summary, the wood surface defect detection device provided in this embodiment can clean the wood surface before it reaches the position of the visual inspection mechanism 4. By cleaning away the dust and debris deposited on the wood surface, it can eliminate the influence of dust and debris on the defect detection results to a considerable extent.

[0030] It should be noted that the parts that are not described in detail or in detail in the above scheme, such as the specific composition of the visual detection mechanism 4, the driving structure of the conveyor belt mechanism, the structure of the connecting rod that can be detachably connected to the brush 13, etc., are all existing technologies, and do not belong to the improvements made by the present invention on the existing technology, nor do they belong to the scope of protection of the technical scheme of the present invention. Therefore, they will not be repeated in this article.

[0031] Of course, the above content is only a preferred embodiment of the present invention and should not be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples. Equivalent changes and improvements made by ordinary technicians in this technical field within the essential scope of the present invention should all fall within the scope of the patent of the present invention.

Claims

1. A wood surface defect detection device, characterized by: It comprises a conveyor belt mechanism, a cleaning mechanism and a visual detection mechanism (4), wherein the cleaning mechanism and the visual detection mechanism (4) are sequentially arranged on the conveyor belt mechanism along the conveying direction; The cleaning mechanism includes an air blowing cleaning mechanism and a brush cleaning mechanism which are sequentially arranged along the conveying direction; The air blowing cleaning mechanism comprises an air blowing fan (9), and the air blowing fan (9) is installed on one side edge of the upper surface of the conveyor belt mechanism; The brush cleaning mechanism comprises a lifting assembly and a brush (13); the lifting assembly is arranged above the conveyor belt mechanism; and the output end of the lifting assembly is connected to the brush (13).

2. The wood surface defect detection device according to claim 1, characterized in that: A collection box (5) is installed on the other side of the upper surface of the conveyor belt mechanism at a position corresponding to the air blowing fan (9), and the side of the collection box (5) facing the air blowing fan (9) is opened.

3. The wood surface defect detection device according to claim 1, characterized in that: The lifting assembly comprises a driving motor (11), the output shaft of the driving motor (11) is connected to a ball screw (12), and a brush (13) is detachably connected to a slider of the ball screw (12).

4. The wood surface defect detection device according to claim 1, characterized in that: A brush strip (7) is provided below the conveyor belt mechanism, and the brush strip (7) always keeps in contact with the conveyor belt surface of the conveyor belt mechanism.

5. The wood surface defect detection device according to claim 4, characterized in that: A waste box is provided below the brush strip (7).

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