Automatic wood board sorting device

Abstract

The utility model discloses an automatic wood board sorting device which comprises a machine frame and a front conveyor, and an image detection device, a sorting device, a color recognition device and a plurality of sets of partition plates arranged in the width direction of the front conveyor are sequentially erected on the front conveyor in the conveying direction. The sorting device comprises three collecting boxes and three first material pushing assemblies which are used for pushing wood plates with holes, wood sections, wood sections and holes into the three collecting boxes respectively; a sorting channel is formed between every two sets of partition plates, and a thickness detection device and a plurality of second pushing assemblies for pushing the wood boards of different colors to the front ends of the different sorting channels are erected on the rear portion and the front portion of each sorting channel correspondingly. A plurality of groups of sorting boxes which are used for collecting wood boards with different thicknesses are arranged below the output end of the front conveyor, the number of each group of sorting boxes is equal to that of the sorting channels, and the rack is provided with a sorting conveying mechanism for conveying the wood boards in the sorting channels into the different groups of sorting boxes; the whole sorting device has the advantages of high sorting efficiency, high sorting accuracy and low labor intensity.

Description

Technical Field

[0001] This utility model belongs to the technical field of wood processing equipment, and more specifically, it relates to an automatic wood board sorting device. Background Technology

[0002] Currently, the wood processing industry has a very broad market in my country. However, the low level of automation in the wood processing process is a bottleneck for the development of many wood processing enterprises. The use of a large amount of manual labor has severely compressed the profit margins of enterprises. In the wood processing process, due to the control of finished product quality and production needs, it is often necessary to classify and sort the wood boards according to the surface color or thickness. At the same time, due to the physiological process of tree growth, the effect of genetic factors, or the influence of the external environment during the growth period, wood will form natural defects such as knots or holes. In order to avoid affecting the strength, processing quality and appearance of the wood, it is usually necessary to sort out the wood containing knots and holes and cut off the parts of the wood containing knots and holes. Therefore, wood board sorting is one of the important links in wood processing.

[0003] In current wood processing, the sorting of wood planks based on color, thickness, and natural defects typically involves manual visual inspection and identification. Planks are then manually sorted based on differences in color depth, thickness, and the presence of knots and holes, combined with experience. Planks with knots and holes are removed and sent for removal before being re-sorted based on color and thickness. However, this manual sorting method is labor-intensive and time-consuming, resulting in high labor costs. Furthermore, prolonged sorting work leads to increased eye and physical fatigue for the sorting personnel, slowing down sorting efficiency and increasing the risk of missed or incorrect sorting. Existing automated sorting devices are limited in function and cannot simultaneously detect and sort wood planks based on color, thickness, and natural defects, resulting in low sorting efficiency, low accuracy, and high labor intensity. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an automatic wood board sorting device, which has the advantages of high sorting efficiency, high sorting accuracy and low labor intensity.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An automatic wood board sorting device includes a frame and a front conveyor for conveying vertically placed wood boards. The front conveyor is sequentially equipped with an image detection device for detecting surface defects in the wood boards, a sorting device, a color recognition device, and several sets of partitions along the conveying direction. The sorting device includes three collection boxes and three first pushing components for pushing wood boards with holes, wood boards with knots, and wood boards with both knots and holes into the three collection boxes respectively. The partitions are arranged along the width of the front conveyor, and a sorting channel for single wood boards is formed between each set of partitions. A thickness detection device and several second pushing components for pushing wood boards of different colors to the front of different sorting channels are respectively installed behind and in front of the sorting channels. Several sets of sorting boxes for collecting wood boards of different thicknesses are located below the output end of the front conveyor, with each set containing the same number of sorting boxes as the sorting channels. The frame is equipped with a sorting conveying mechanism for conveying wood boards from the sorting channels to the different sets of sorting boxes.

[0007] Further configuration: The first pushing assembly includes a first pushing plate and a first cylinder mounted on the frame. The first pushing plate is fixedly connected to the push rod of the first cylinder. The three collection boxes are arranged sequentially along the conveying direction of the front conveyor. Two of the collection boxes are used to collect planks with knots and planks with knots and holes, respectively, and are both located on one side of the front conveyor. The third collection box is used to collect planks with holes and is located on the other side of the front conveyor. A support plate for placing planks with surface defects is provided inside the collection box. A set of springs connects the bottom end of the support plate to the bottom end inside the collection box.

[0008] Further configuration: A transfer conveyor is installed on the side of the two collection boxes on the same side away from the front conveyor. The output end of the transfer conveyor is connected to a wood knot scanning, detection, and cutting device. A discharge port is opened on the top of the two collection boxes on the same side near the transfer conveyor. The bottom of the discharge port is flush with the upper conveying end face of the transfer conveyor. A U-shaped feeding pusher is installed inside the top of each of the two collection boxes on the same side. One vertical end of the feeding pusher is located inside the discharge port. An L-shaped through groove is opened on the top surface of the collection box for placing the horizontal end and the other vertical end of the feeding pusher. A discharge plate is installed between the input end of the transfer conveyor and the bottom of the discharge port. A set of lifting cylinders is installed on the other side of the transfer conveyor. The top rod of the lifting cylinder is equipped with an electric push rod that drives the feeding pusher to push the wood planks in the collection box through the discharge port onto the transfer conveyor. A first pressure sensor is installed inside the support plate. The bottom of the other collection box is equipped with self-locking casters, and a handle is provided on the short side.

[0009] Further configuration: Three sets of partitions are provided, and three sorting channels are provided along the front conveyor; two second pushing components are provided, respectively located on both sides of the front conveyor. The two second pushing components are used to push two different colored wooden boards to the front of the sorting channels on both sides. The second pushing component includes a second pushing plate and a second cylinder mounted on the frame. The second pushing plate is fixedly connected to the push rod of the second cylinder. Below the color recognition device and the image detection device, there is a set of intermediate limiting plates mounted above the front conveyor. A limiting detection channel for a single vertically placed wooden board to pass through is formed between the intermediate limiting plates. The limiting detection channel is connected to the intermediate sorting channel, and its width is the same as the width of the intermediate sorting channel.

[0010] Further configuration: The front end of the limit detection channel 26 is tapered along the conveying direction. The two front ends of the middle set of partitions are respectively rotatably connected to a left guide plate and a right guide plate. The left guide plate and the right guide plate are arranged in an inverted V-shape, and a guide channel communicating with the middle sorting channel is formed between them. The guide channel is tapered along the conveying direction. A first bracket is mounted on the partition. The first bracket is equipped with a first motor and a second motor for driving the left guide plate and the right guide plate to rotate, respectively. The color recognition device is electrically connected to an external controller. The first motor, the second motor, and the second cylinder are all electrically connected to the output terminal of the external controller.

[0011] Further configuration: The sorting and conveying mechanism includes several rear conveyors arranged sequentially along the conveying direction of the wooden boards and a flipping drive component that drives the front end of the rear conveyors to flip up and down; the rear conveyors are located behind the output end of the front conveyors, and their upper conveying end faces are flush with the upper conveying end faces of the front conveyors. The rear ends of the rear conveyors are connected to rotating shafts on both sides, and the rotating shafts are connected to the frame through bearings. Each group of sorting boxes is located below a rear conveyor. Each rear conveyor is provided with an inverted U-shaped support frame above it. The two vertical ends of the support frame are fixedly connected to the two outer sides of the rear conveyor. Several groups of limiting baffles are installed at the bottom of the horizontal end of the support frame, arranged along the width direction of the rear conveyor, with the number of each group being the same as the number of partitions in each group. A limiting channel communicating with the sorting channel is formed between each group of limiting baffles.

[0012] Further configuration: The thickness detection device includes several sets of thickness detection sensors located in front of the rear conveyor and a second bracket arranged in a U-shape. The two vertical ends of the second bracket are mounted on the frame, and the two horizontal ends of the second bracket are located above and below the output end of the upper conveying end face of the front conveyor, respectively. Each set of thickness detection sensors has two sensors, which are respectively mounted on the two horizontal ends of the second bracket. Each set of thickness detection sensors is located behind each sorting channel, and the number of thickness detection sensors in each set is the same as the number of sorting channels.

[0013] Further configuration: The thickness detection device includes several inverted U-shaped third supports and several height limiting plates for blocking wooden boards of different thicknesses. The two vertical ends of each third support are fixedly connected to both sides of the rear end of each rear conveyor. Each height limiting plate is detachably connected to the bottom of the horizontal end of the third support. The limiting baffle is located in front of the height limiting plate on the same rear conveyor. The distance between the bottom of the height limiting plate and the upper conveying end face of the rear conveyor is the detection distance. Several detection distances are arranged in descending order along the conveying direction. A second pressure sensor is installed at the bottom of the front end face of each height limiting plate. The flipping drive is a set of third cylinders located on both sides of the rear conveyor and used to drive the rear conveyor to flip downwards. The bottom end of the third cylinder is located below the rear end of the rear conveyor and is hinged to the frame. The top rod of the third cylinder is hinged to the front side of the rear conveyor.

[0014] Further configuration: The image detection device includes four detection cameras for detecting the four sides of the wooden board, a U-shaped light shield, and LED lights installed inside the light shield. The four detection cameras are respectively installed on the inner sides of the two vertical ends and two horizontal ends of the light shield. The middle of the light shield is a detection area for the wooden board to pass through and be detected. The front conveyor includes a short conveyor and a long conveyor arranged sequentially along the conveying direction. The light shield is erected between the input end of the long conveyor and the output end of the short conveyor. The two horizontal ends of the light shield are respectively located above and below the front conveyor.

[0015] In summary, this utility model uses a front conveyor to automatically transport vertically placed wooden boards. An image detection device, three collection boxes, and three first pushing components are used to acquire and compare images of the board's surface to determine whether the surface is acceptable and to classify surface defects. If a surface defect is detected (only holes, only knots, or both), the external controller controls the corresponding first pushing component to push the board to the collection box containing that defect, based on the detected defect category. When the surface is qualified, the first pushing component stops working, and the front conveyor continues to transport qualified wood boards, which serves to sort the wood boards according to their surface. A color recognition device, several second pushing components, several sets of partitions, and several sorting channels are used to detect and identify the color category of the wood boards and push them to the front of the corresponding color sorting channel. The wood boards are then transported into the corresponding color sorting channel by the front conveyor, thus achieving color sorting of qualified wood boards. A thickness detection device, a sorting conveyor mechanism, and several sorting boxes are used to sort wood boards of different colors and thicknesses that are qualified on the surface.

[0016] It has a high degree of automation, eliminating the need for manual visual identification and handling. It can automatically sort and classify wooden boards according to their surface, color, and thickness, and has the advantages of high sorting efficiency, high sorting accuracy, and low labor intensity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0018] Figure 2 This is a partial top view of Embodiment 1 of the present utility model;

[0019] Figure 3 This is a schematic diagram of the sorting conveyor in Embodiment 1 of this utility model;

[0020] Figure 4 This is a cross-sectional view of the image detection device in Embodiment 1 of this utility model;

[0021] Figure 5 This is a partial cross-sectional view of the collection box in Embodiment 1 of this utility model;

[0022] Figure 6 This is a partial cross-sectional view of the color recognition device in Embodiment 1 of this utility model;

[0023] Figure 7 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model;

[0024] Figure 8 for Figure 7A magnified view of part A;

[0025] Figure 9 This is a schematic diagram of the overall structure of Embodiment 3 of this utility model;

[0026] Figure 10 This is a schematic diagram of the sorting conveyor in Embodiment 3 of this utility model;

[0027] Figure 11 This is a front view of the three-part sorting conveyor and thickness detection device according to an embodiment of the present invention.

[0028] In the diagram: 1. Frame; 2. Front conveyor; 3. Image detection device; 4. Color recognition device; 5. Partition; 6. Collection box; 7. First cylinder; 8. First push plate; 9. Sorting channel; 10. Sorting box; 11. Rear conveyor; 12. Support plate; 13. Spring; 14. Transfer conveyor; 15. Discharge port; 16. Wood knot scanning, detection and cutting device; 17. Feeding push plate; 18. L-shaped through groove; 19. Discharge plate; 20. Electric push rod; 21. First pressure sensor; 22. Caster wheel; 23. Handle; 24. Second push plate; 25. 1. Middle limiting plate; 26. Limit detection channel; 27. Left guide plate; 28. Right guide plate; 29. ​​Guide channel; 30. First motor; 31. Second motor; 32. Tilting drive component; 33. Support frame; 34. Limit baffle; 35. Limit channel; 36. Thickness detection sensor; 37. Height limiting plate; 38. Second pressure sensor; 40. LED light; 41. Detection camera; 42. Light shield; 43. Detection area; 44. Short conveyor; 45. Long conveyor; 46. Second cylinder; 47. Lifting cylinder; d. Detection distance. Detailed Implementation

[0029] To explain the technical content, objectives, and effects of this utility model in detail, the following description is provided in conjunction with the embodiments and accompanying drawings. It should be noted that the terms "upper" and "lower" used in the following description refer to the attached drawings. Figure 1 and Figure 4 The direction in the middle, the words "bottom" and "top" refer to the attached Figure 1 and Figure 4 The direction of the center of the specific component's geometry; in addition, the wood knot scanning and cutting device mentioned throughout the text refers to a wood knot scanning and cutting device for wood processing disclosed in Chinese Patent No. CN218462424U; "along the conveying direction" throughout the text refers to the conveying direction of the upper conveying end face of the front conveyor; "vertically placed wooden board" in this text means that the length direction of the wooden board is parallel to the length direction of the front conveyor.

[0030] The most crucial concept of this invention lies in the following: The front conveyor 2 automatically transports vertically placed wooden boards. An image detection device 3, three collection boxes 6, and three first pushing components acquire and compare images of the board surfaces to identify their category. Based on the detected surface defects, the boards are pushed into the corresponding collection box 6 (those with holes only, knots only, or both). If the board surface is found to be acceptable, no further action is required, effectively sorting the boards based on their surface characteristics. A color recognition device 4, several second pushing components, several sets of partitions 5, and several sorting channels 9 detect and identify the color category of the boards, pushing them to the corresponding color sorting channel 9 for separate transport, thus achieving color sorting of acceptable boards. A thickness detection device, a sorting and conveying mechanism, and several sorting boxes 10 separate boards of acceptable surface characteristics but different colors and thicknesses.

[0031] This utility model integrates the functions of automatically detecting and sorting surface defects, detecting and sorting color, and detecting and sorting thickness of wooden boards. It eliminates the need for manual visual identification and handling, resulting in a high degree of automation. It avoids eye fatigue caused by human visual identification, which could lead to missed sorting or sorting errors. It has the advantages of high sorting efficiency, high sorting accuracy, and low labor intensity.

[0032] Please refer to Figures 1 to 11 As shown, an automatic wood board sorting device includes a frame 1 and a front conveyor 2 for conveying vertically placed wood boards. The front conveyor 2 is sequentially equipped with an image detection device 3 for detecting surface defects of the wood boards, a sorting device, a color recognition device 4, and several sets of partitions 5 along the conveying direction. The sorting device includes three collection boxes 6 and three first pushing components for pushing wood boards with holes, wood boards with knots, and wood boards with both knots and holes into the three collection boxes 6 respectively. The partitions 5 are arranged along the width direction of the front conveyor 2, and a sorting channel 9 for single wood boards to pass through is formed between each set of partitions 5. A thickness detection device and several second pushing components for pushing wood boards of different colors to the front end of different sorting channels 9 are respectively installed behind and in front of the sorting channels 9. Several sets of sorting boxes 10 are provided below the output end of the front conveyor 2 for collecting wood boards of different thicknesses, and the number of each set is the same as the number of sorting channels 9. The frame 1 is equipped with a sorting conveying mechanism for conveying wood boards in the sorting channels 9 to different sets of sorting boxes 10.

[0033] As described above, when sorting and classifying planks based on their color, thickness, and the presence or absence of natural defects such as knots and holes, the process begins with the front conveyor 2. Multiple individual planks are first placed vertically, one in front and one behind, on the input end of the upper conveyor face of the front conveyor 2, thus automatically transporting the vertically placed planks. Then, when the planks are conveyed to the image detection device 3, the device captures images of the plank surface and sends the acquired image data to an external controller. The external controller compares the received image with preset plank images to determine whether the plank has surface defects and to classify the plank's surface type. Specifically, it determines whether the plank is a non-conforming plank with only knots, or... The system automatically identifies and detects the surface defects of wood boards, categorizing them into three types: boards with holes only, boards with knots and holes only, and boards without knots and holes only. If a surface defect is detected, the external controller, through three collection boxes 6 and a first pushing assembly, controls the first pushing assembly corresponding to the type of surface defect to push the board (with holes only, boards with knots only, or boards with knots and holes) into the corresponding collection box 6. If no surface defect is detected, the first pushing assembly stops working, and the front conveyor 2 continues to transport qualified wood boards, thus performing preliminary sorting of the surface-detected boards.

[0034] Afterwards, the surface-tested and qualified wooden boards are conveyed by the front conveyor 2 to the area below the color recognition device 4. The color recognition device 4 compares the color of the wooden board with the color of a preset image to determine the color category of the wooden board. The color recognition device 4 sends the detected color category signal to the external controller to achieve automatic identification and judgment of the wooden board color. Next, through several second pushing components, several sets of partitions 5, and several sorting channels 9, the external controller controls the corresponding second pushing component to push the wooden board to the front of the corresponding color sorting channel 9 according to the detected wooden board color category. The wooden board enters the corresponding color sorting channel 9 under the conveying action of the front conveyor 2, realizing the secondary sorting of the wooden board. Finally, the wooden board is conveyed by the front conveyor 2 from the sorting channel. After exiting from sorting channel 9, the wood boards pass through a thickness detection device, a sorting and conveying mechanism, and several sorting boxes 10. Since the number of sorting boxes 10 in each group is the same as the number of sorting channels 9, each sorting box 10 in the same group collects wood boards of the same thickness but different color categories. First, the thickness detection device detects the thickness of the conveyed wood boards and sends the detected thickness information to an external controller. The external controller controls the sorting and conveying mechanism to transport the wood board to the top of a group of sorting boxes 10 corresponding to the thickness range. Since the wood boards do not change direction after exiting sorting channel 9, after the wood board thickness is detected, the wood boards fall into the sorting box 10 of the corresponding sorting channel 9 under the action of gravity. This achieves the sorting of wood boards with qualified surfaces but different colors and thicknesses, effectively performing a three-stage sorting of the wood boards.

[0035] Furthermore, the first pushing assembly includes a first pushing plate 8 and a first cylinder 7 mounted on the frame 1. The first pushing plate 8 is fixedly connected to the push rod of the first cylinder 7. Three collection boxes 6 are arranged sequentially along the conveying direction of the front conveyor 2. Two collection boxes 6 are used to collect planks with knots and planks with knots and holes, respectively, and are both located on one side of the front conveyor 2. The third collection box 6 is used to collect planks with holes and is located on the other side of the front conveyor 2. A support plate 12 for placing planks with surface defects is provided inside the collection box 6. A set of springs 13 is connected between the bottom end of the support plate 12 and the bottom end inside the collection box 6.

[0036] As described above, when the image detection device 3 detects a defect on the surface of the wooden board that consists only of knots or has both knots and holes, the external controller activates the first cylinder 7 corresponding to this surface defect category. The push rod of the first cylinder 7 extends, driving the first push plate 8 to push the wooden board with only knots or with both knots and holes toward the two collection boxes 6 located on the outer side of the front conveyor 2. When the wooden board is pushed above the corresponding collection box 6, it falls onto the support plate 12 under the action of gravity. Under the action of the spring 13, the support plate 12 slowly moves downward, preventing the wooden board from falling directly onto the collection box. The bottom of box 6 is impacted, causing damage to the wooden board. At the same time, it makes room for stacking the next wooden board. Similarly, when the image detection device 3 detects a defect with only holes on the surface of the wooden board, the external controller controls the first cylinder 7 corresponding to this surface defect category to start, driving the first push plate 8 to push the wooden board with only holes to the third collection box 6 located on the other side of the front conveyor 2. Under the action of gravity, the wooden board with only holes falls onto the support plate 12 inside the third collection box 6. Under the action of the spring 13, the support plate 12 slowly moves down, which plays the role of automatically sorting wooden boards according to surface defects.

[0037] Furthermore, a transfer conveyor 14 is provided on the side of the two collection boxes 6 on the same side away from the front conveyor 2. The output end of the transfer conveyor 14 is connected to a wood knot scanning, detection and cutting device 16. The top of the two collection boxes 6 on the same side near the transfer conveyor 14 has a discharge port 15. The bottom of the discharge port 15 is flush with the upper conveying end face of the transfer conveyor 14. The top of the two collection boxes 6 on the same side is provided with a U-shaped feeding push plate 17. One vertical end of the feeding push plate 17 is located inside the discharge port 15. The top surface of the collection box 6 has a feeding push plate. An L-shaped through-slot 18 is placed at the horizontal end of 17 and the other vertical end. A discharge plate 19 is installed between the input end of the transfer conveyor 14 and the bottom of the discharge port 15. A set of lifting cylinders 47 is installed on the other side of the transfer conveyor 14. The top rod of the lifting cylinder is equipped with an electric push rod 20 that drives the feeding push plate 17 to push the wooden boards in the collection box 6 through the discharge port 15 to the transfer conveyor 14. A first pressure sensor 21 is installed in the support plate 12. The bottom of the collection box 6 on the other side is equipped with a self-locking caster wheel 22, and a handle 23 is provided on the short side.

[0038] As described above, when the weight in the collection box 6 used to collect planks with only knots or the collection box 6 used to collect planks with knots and holes reaches a preset range, the first pressure sensor 21 in the collection box 6 sends a signal to the external controller. The external controller first controls the top rod of the corresponding electric push rod 20 to retract, driving the corresponding feeding push plate 17 to push the plank located in the middle of the U-shaped feeding push plate 17 towards the transfer conveyor 14. The plank first leaves the collection box 6 through the discharge port 15, and then is pushed to the input end of the transfer conveyor 14 through the discharge plate 19. The plank then travels along the transfer conveyor 14 towards the knot scanning detection and cutting device 1. The system uses a 6-directional conveyor. The knot scanning and cutting device 16 removes the knots from the wooden boards. When the next wooden board needs to be pushed to the transfer conveyor 14, the top rod of the lifting cylinder 47 extends, driving the electric push rod 20 to rise to a preset top value. The electric push rod 20 then drives the feeding push plate 17 to move horizontally above the collection box 6. The top rod of the lifting cylinder 47 retracts and resets, driving the electric push rod 20 to descend, thereby driving the feeding push plate 17 to descend so that one vertical end is located at the discharge port 15, and the other vertical end and horizontal end are located in the L-shaped through groove 18. The above steps of pushing the wooden board to the transfer conveyor 14 are repeated, which can automatically cut wooden boards with knots.

[0039] Additionally, if the weight of both collection boxes 6 on one side of the front conveyor 2 reaches the preset maximum value, the electric push rod 20 for processing only knotted planks can be started first. After the pressure sensor in the collection box 6 for collecting only knotted planks returns to zero, that is, after all the planks in the collection box 6 containing knotted planks have been pushed to the transfer conveyor 14, the other electric push rod 20 can be started to push all the planks in the collection box 6 containing planks with both knots and holes to the transfer conveyor 14 for knot processing. This avoids mixing the planks with only knots with those containing both knots and holes after subsequent knot cutting, which would require manual sorting later. When the collection box 6 on the other side of the front conveyor 2 is full of planks with only holes, the collection box 6 and the planks with only holes can be quickly and effortlessly moved together to the hole processing area using the casters 22 and handles 23.

[0040] Furthermore, the partition 5 is provided in three sets, and the sorting channel 9 is provided in three sets along the front conveyor 2; the second pushing assembly is provided in two sets, and is located on both sides of the front conveyor 2 respectively. The two second pushing assemblies are used to push the two different colored wooden boards to the front of the sorting channels 9 on both sides respectively. The second pushing assembly includes a second pushing plate 24 and a second cylinder 46 installed on the frame 1. The second pushing plate 24 is fixedly connected to the top rod of the second cylinder 46. Below the color recognition device 4 and the image detection device 3, there is a set of intermediate limiting plates 25 that are mounted on the front conveyor 2. A limiting detection channel 26 for a single vertical wooden board to pass through is formed between the intermediate limiting plates 25. The limiting detection channel 26 is connected to the intermediate sorting channel 9, and its width is the same as the width of the intermediate sorting channel 9.

[0041] As described above, by setting the partition 5 into three groups, i.e., the wood board colors are divided into three categories, corresponding to three different sorting channels 9, under the conveying action of the front conveyor 2, and limited by the two sets of intermediate limiting plates 25 below the image detection device 3 and the color recognition device 4, it is ensured that the wood board is always conveyed in the middle position of the front conveyor 2 during the detection of the wood board surface and the color recognition process. After the wood board has completely left the color recognition device 4, i.e., after the wood board has completely left the limiting detection channel 26, when the color recognition device 4 detects that the wood board color category belongs to category one or three, the external controller controls the corresponding second cylinder 46. The push rod extends, driving the second push plate 24 to move the wood board of this color to the front of the corresponding sorting channel 9 on both sides (the first sorting channel 9 or the three sorting channels 9). The wood board enters the sorting channel 9 under the conveying action of the front conveyor 2. When the color recognition device 4 detects that the color category of the wood board belongs to category two, neither of the two second cylinders 46 works. Because the limit detection channel 26 is connected to the middle sorting channel 9 and the width of the two channels is the same, the wood board of category two color is conveyed to the middle sorting channel 9 by the front conveyor 2, realizing the function of automatically sorting the wood board according to the color category.

[0042] Furthermore, the front end of the limit detection channel 26 is set to gradually narrow along the conveying direction. The two front ends of the middle set of partitions 5 are respectively rotatably connected to the left guide plate 27 and the right guide plate 28. The left guide plate 27 and the right guide plate 28 are arranged in an inverted V-shape, and a guide channel 29 communicating with the middle sorting channel 9 is formed between them. The guide channel 29 is set to gradually narrow along the conveying direction. A first bracket is mounted on the partition 5. The first bracket is equipped with a first motor 30 and a second motor 31 for driving the left guide plate 27 and the right guide plate 28 to rotate, respectively. The color recognition device 4 is electrically connected to an external controller. The first motor 30, the second motor 31, and the second cylinder 46 are all electrically connected to the output terminal of the external controller.

[0043] As can be seen from the above description, when the color recognition device 4 detects that the color category of the wooden board belongs to category one or category three, the color recognition device 4 sends the detected color signal to the external controller. The external controller first controls the drive end of the first motor 30 and the drive end of the second motor 31 to rotate in opposite directions, thereby driving the left guide plate 27 and the right guide plate 28 to rotate in opposite directions, so that the left guide plate 27 and the right guide plate 28 change from an inverted V-shape arrangement to a regular V-shape arrangement. At this time, the middle sorting channel 9 is blocked. The external controller then controls the push rod of the corresponding second cylinder 46 to extend, driving the second push plate 24 to move the wooden board of this color to the front of the sorting channel 9 (the first sorting channel 9 or the three sorting channels 9) of the corresponding color on both sides. Under the conveying action of the front conveyor 2, the wooden board is adjusted by the left guide plate 27 or the right guide plate 28 and enters the sorting channel 9 of the corresponding color.

[0044] When the color recognition device 4 detects that the wood board color belongs to category II, neither of the two second cylinders 46 works. The color recognition device 4 sends the detected color signal to the external controller. The external controller controls the drive ends of the first motor 30 and the second motor 31 to rotate in opposite directions, driving the left guide plate 27 and the right guide plate 28 to move in opposite directions, so that the left guide plate 27 and the right guide plate 28 change from a regular V-shape to an inverted V-shape. The wood boards of category II color are guided and adjusted by the front conveyor 2 and enter the middle sorting channel 9, which can ensure that the wood boards accurately enter each sorting channel 9; and further ensure sorting efficiency and sorting accuracy.

[0045] Furthermore, the sorting and conveying mechanism includes several rear conveyors 11 arranged sequentially along the conveying direction of the wooden boards and a flipping drive 32 that drives the front end of the rear conveyors 11 to flip up and down. The rear conveyors 11 are located behind the output end of the front conveyor 2, and the upper conveying end face is flush with the upper conveying end face of the front conveyor 2. The rear ends of the rear conveyors 11 are connected to the two sides of the rear end shaft, and the shaft is connected to the frame 1 through bearings. Each sorting box 10 is located below a rear conveyor 11. Each rear conveyor 11 is provided with an inverted U-shaped support frame 33. The two vertical ends of the support frame 33 are fixedly connected to the two outer sides of the rear conveyor 11. Several sets of limiting baffles 34 are installed at the bottom of the horizontal end of the support frame 33, arranged along the width direction of the rear conveyor 11, and the number of each set is the same as the number of each set of partitions 5. A limiting channel 35 communicating with the sorting channel 9 is formed between each set of limiting baffles 34.

[0046] As described above, after the wood board is detected by the thickness detection device, the thickness detection device sends the detected thickness information to the external controller. The external controller controls the corresponding flipping drive 32 to start according to the detected wood board thickness range. When the detected wood board thickness range is a group of sorting boxes 10 below the first rear conveyor 11, the external controller controls the flipping drive 32 of the first rear conveyor 11 to start. The first flipping drive 32 drives the first rear conveyor 11 to flip upward or downward around its rear end in a direction away from the front conveyor 2, which serves to open the entrance of the first group of sorting boxes 10. Under the action of gravity, the wood board falls from the output end of the front conveyor 2 into the first group of sorting boxes 10. Since the wood board does not change direction after coming out of the sorting channel 9, the wood board will fall accurately into the sorting box 10 of the sorting channel 9 corresponding to the color of the wood board.

[0047] When the detected thickness of the wooden board falls within the range of several sorting boxes 10 (excluding the first sorting box 10), the external controller activates the corresponding rear conveyor 11's tilting drive 32. The tilting drive 32 drives the corresponding rear conveyor 11 to tilt upwards or downwards around its rear end, moving away from the front conveyor 2. Because the upper conveying end face of the front conveyor 2 is flush with the upper conveying end face of the rear conveyor 11, the wooden board does not change direction as it exits the sorting channel 9. The wooden board of this thickness is conveyed from the output end of the front conveyor 2 to the rear conveyor. On machine 11, a set of limiting baffles 34 limit the wooden boards on the rear conveyor 11 to prevent the conveying direction of the wooden boards from changing. When the wooden board is conveyed to the rear conveyor 11 before the rear conveyor 11 of the corresponding thickness, under the action of gravity, the wooden board falls precisely into the sorting box 10 of the corresponding wooden board color category below the rear conveyor 11 of the corresponding thickness. This can realize the function of automatically sorting wooden boards of different colors and thicknesses with qualified surfaces, thereby further improving sorting efficiency and sorting accuracy.

[0048] Furthermore, the thickness detection device includes several sets of thickness detection sensors 36 located in front of the rear conveyor 11 and a second bracket arranged in a U-shape. The two vertical ends of the second bracket are mounted on the frame 1, and the two horizontal ends of the second bracket are located above and below the output end of the upper conveying end face of the front conveyor 2, respectively. Each set of thickness detection sensors 36 has two sensors, which are respectively mounted on the two horizontal ends of the second bracket. Each set of thickness detection sensors 36 is located behind each sorting channel 9, and the number of thickness detection sensors 36 in each set is the same as the number of sorting channels 9.

[0049] As described above, after the wooden boards leave the sorting channel 9, they are conveyed to a set of thickness detection sensors 36 behind the sorting channel 9. The thickness of the wooden boards is detected by the set of thickness detection sensors 36, which then send the detected thickness signal to an external controller. The external controller controls the corresponding thickness-related flipping drive 32 to start. The flipping drive 32 drives the corresponding rear conveyor 11 to flip upwards around its rear end in a direction away from the front conveyor 2 until the entrance of a set of sorting boxes 10 below the rear conveyor 11 opens, thus automatically detecting and sorting the wooden boards.

[0050] Furthermore, the thickness detection device includes several third supports arranged in an inverted U-shape and several height limiting plates 37 for blocking wooden boards of different thicknesses. The two vertical ends of each third support are fixedly connected to the two sides of the rear end of each rear conveyor 11. Each height limiting plate 37 is detachably connected to the bottom of the horizontal end of the third support. The limiting baffle 34 is located in front of the height limiting plate 37 on the same rear conveyor 11. The distance between the bottom of the height limiting plate 37 and the upper conveying end face of the rear conveyor 11 is the detection distance d. Several detection distances d are arranged to decrease along the conveying direction. A second pressure sensor 38 is installed at the bottom of the front end face of each height limiting plate 37. The flipping drive 32 is a set of third cylinders located on both sides of the rear conveyor 11 and used to drive the rear conveyor 11 to flip downward. The bottom end of the third cylinder is located below the rear end of the rear conveyor 11 and is hinged to the frame 1. The top rod of the third cylinder is hinged to the front side of the rear conveyor 11.

[0051] As described above, after the wooden board leaves the sorting channel 9, it is first conveyed to the output end of the front conveyor 2, and then to the first rear conveyor 11 between a set of limiting baffles 34 corresponding to the sorting channel 9. Afterward, the rear conveyor 11 conveys the wooden board from between these limiting baffles 34 to the first height limiting plate 37. If the thickness of the wooden board is less than the distance between the bottom of the first height limiting plate 37 and the upper conveying end face of the rear conveyor 11 (i.e., the first detection distance d), the wooden board will pass through the first height limiting plate 37 and continue to be conveyed to the next rear conveyor 11, until the wooden board is... The height limit plate 37 blocks the flow of pressure. The second pressure sensor 38 of the height limit plate 37 sends the detected pressure signal to the external controller. The external controller controls the third cylinder corresponding to the height limit plate 37 to start. The push rod of the third cylinder retracts, causing the corresponding rear conveyor 11 to flip downward around its rear end. Under the action of gravity, the wooden board falls into the corresponding color sorting box 10 below the rear conveyor 11. After the wooden board falls into the sorting box 10, the push rod of the third cylinder extends, causing the rear conveyor 11 to reset. This achieves the function of automatically sorting wooden boards of different colors and thicknesses that meet the surface quality requirements.

[0052] Furthermore, the image detection device 3 includes four detection cameras 41 for detecting the four sides of the wooden board, a light shield 42 arranged in a U-shape, and LED lights 40 installed inside the light shield 42. The four detection cameras 41 are respectively installed on the inner sides of the two vertical ends and two horizontal ends of the light shield 42. The middle of the light shield 42 is a detection area 43 for the wooden board to pass through and be detected. The front conveyor 2 includes a short conveyor 44 and a long conveyor 45 arranged sequentially along the conveying direction. The light shield 42 is installed between the input end of the long conveyor 45 and the output end of the short conveyor 44. The two horizontal ends of the light shield 42 are located above and below the front conveyor 2, respectively.

[0053] As described above, when the wooden board is conveyed to the inspection area 43, four inspection cameras 41 acquire images of the upper, lower, left, and right surfaces of the board and send the acquired image data to an external controller. The external controller compares the received images with preset wooden board images to determine whether the board is a defective board with only knots, a defective board with only holes, a defective board with both knots and holes, or a qualified board without knots and holes. This system automatically identifies and inspects the surface of the wooden board. The light shield 42 and LED lights 40 illuminate the wooden board, preventing the accuracy of surface identification from being affected by varying external light conditions, thus improving the overall sorting efficiency and accuracy.

[0054] Reference Figures 1 to 6 The first embodiment provided by this utility model is as follows:

[0055] An automatic wood board sorting device includes a frame 1 and a front conveyor 2 for conveying vertically placed wood boards. The front conveyor 2 is sequentially equipped with an image detection device 3 for detecting defects on the surface of the wood boards, a sorting device, a color recognition device 4, and several sets of partitions 5 along the conveying direction. In this embodiment, the color recognition device 4 includes a light shield, an LED light, and an industrial camera. The LED light is installed at the top center of the light shield, and the industrial camera is installed on both sides of the top of the light shield. The industrial camera is electrically connected to an industrial control computer. The industrial camera is used to perform color recognition and classification of the wood boards in the light shield. The industrial camera sends the captured image information to the industrial control computer. The industrial control computer first compares and classifies the image with a preset image. This structure is not limited to this one; any other structure that can recognize and classify the color of the wood boards is acceptable.

[0056] The sorting device includes three collection boxes 6 and three first pushing components for pushing wooden boards with holes, wooden boards with knots, and wooden boards with both knots and holes into the three collection boxes 6 respectively; partitions 5 are arranged along the width direction of the front conveyor 2, and a sorting channel 9 for a single wooden board to pass through is formed between each set of partitions 5; a thickness detection device and several second pushing components for pushing wooden boards of different colors to the front end of different sorting channels 9 are respectively installed behind and in front of the sorting channels 9; several sets of sorting boxes 10 are provided below the output end of the front conveyor 2 for collecting wooden boards of different thicknesses, and the number of each set is the same as the number of sorting channels 9; in order to facilitate pushing the sorting boxes 10, a trolley or other roller structure with a self-locking function can be installed at the bottom of each set of sorting boxes 10; the frame 1 is equipped with a sorting conveying mechanism for conveying wooden boards in the sorting channels 9 to different sets of sorting boxes 10.

[0057] The first pushing assembly includes a first pushing plate 8 and a first cylinder 7 mounted on the frame 1. The first pushing plate 8 is fixedly connected to the push rod of the first cylinder 7. Three collection boxes 6 are arranged sequentially along the conveying direction of the front conveyor 2. Two collection boxes 6 are used to collect planks with knots and planks with knots and holes, respectively, and are located on one side of the front conveyor 2. The third collection box 6 is used to collect planks with holes and is located on the other side of the front conveyor 2. A support plate 12 for placing planks with surface defects is provided inside the collection box 6. A set of springs 13 is connected between the bottom end of the support plate 12 and the bottom end inside the collection box 6.

[0058] There are three sets of partitions 5 and three sorting channels 9 along the front conveyor 2; there are two second pushing components, which are located on both sides of the front conveyor 2 respectively. The two second pushing components are used to push two different colored wooden boards to the front of the sorting channels 9 on both sides respectively. The second pushing component includes a second pushing plate 24 and a second cylinder 46 installed on the frame 1. The second pushing plate 24 is fixedly connected to the top rod of the second cylinder 46. Below the color recognition device 4 and the image detection device 3, there is a set of intermediate limiting plates 25 that are mounted on the front conveyor 2. A limiting detection channel 26 for a single vertical wooden board to pass through is formed between the intermediate limiting plates 25. The limiting detection channel 26 is connected to the intermediate sorting channel 9 and its width is the same as the width of the intermediate sorting channel 9.

[0059] The image detection device 3 includes four detection cameras 41 for detecting the four sides of the wooden board, a light shield 42 arranged in a U-shape, and LED lights 40 installed inside the light shield 42. The four detection cameras 41 are respectively installed on the inner sides of the two vertical ends and two horizontal ends of the light shield 42. The middle of the light shield 42 is a detection area 43 for the wooden board to pass through and be detected. The front conveyor 2 includes a short conveyor 44 and a long conveyor 45 arranged sequentially along the conveying direction. The light shield 42 is set between the input end of the long conveyor 45 and the output end of the short conveyor 44. The two horizontal ends of the light shield 42 are located above and below the front conveyor 2, respectively.

[0060] The front end of the limit detection channel 26 is gradually tapered along the conveying direction. The two front ends of the middle set of partitions 5 are respectively rotatably connected to the left guide plate 27 and the right guide plate 28. The left guide plate 27 and the right guide plate 28 are arranged in an inverted V-shape, and a guide channel 29 communicating with the middle sorting channel 9 is formed between them. The guide channel 29 is gradually tapered along the conveying direction. A first bracket is mounted on the partition 5. The first bracket is equipped with a first motor 30 and a second motor 31 for driving the left guide plate 27 and the right guide plate 28 to rotate, respectively. The color recognition device 4 is electrically connected to an external controller (not shown in the figure, as in the whole text). The first motor 30, the second motor 31, and the second cylinder 46 are all electrically connected to the output terminal of the external controller.

[0061] The sorting and conveying mechanism includes several rear conveyors 11 arranged sequentially along the conveying direction of the wooden boards, and a flipping drive 32 that drives the front end of the rear conveyors 11 to flip up and down. In this embodiment, the flipping drive 32 can be a motor or an electric push rod, and is not limited to this structure; any other structure capable of driving the rear conveyors 11 to flip upwards is acceptable. The rear conveyors 11 are located behind the output end of the front conveyors 2, and their upper conveying end faces are flush with the upper conveying end faces of the front conveyors 2. Rotary shafts are connected to both sides of the rear end of the rear conveyors 11. The shaft is connected to the frame 1 via bearings. Each sorting box 10 is located below a rear conveyor 11. Each rear conveyor 11 is equipped with an inverted U-shaped support frame 33. The two vertical ends of the support frame 33 are fixedly connected to the two outer sides of the rear conveyor 11. Several sets of limiting baffles 34 are installed at the bottom of the horizontal end of the support frame 33, arranged along the width direction of the rear conveyor 11, with the number of each set being the same as the number of each set of partitions 5. A limiting channel 35 communicating with the sorting channel 9 is formed between each set of limiting baffles 34.

[0062] The thickness detection device includes several sets of thickness detection sensors 36 located in front of the rear conveyor 11 and a second bracket arranged in a U-shape. The two vertical ends of the second bracket are mounted on the frame 1, and the two horizontal ends of the second bracket are located above and below the output end of the upper conveying end face of the front conveyor 2, respectively. Each set of thickness detection sensors 36 has two sensors, which are respectively mounted on the two horizontal ends of the second bracket. Each set of thickness detection sensors 36 is located behind each sorting channel 9, and the number of thickness detection sensors 36 in each set is the same as the number of sorting channels 9.

[0063] Example 2 differs from Example 1 in that: Figure 7-8 As shown, a transfer conveyor 14 is provided on the side of the two collection boxes 6 on the same side away from the front conveyor 2. The output end of the transfer conveyor 14 is connected to a wood knot scanning, detection and cutting device 16. The top of the two collection boxes 6 on the same side near the transfer conveyor 14 has a discharge port 15. The bottom of the discharge port 15 is flush with the upper conveying end face of the transfer conveyor 14. The top of the two collection boxes 6 on the same side is provided with a U-shaped feeding push plate 17. One vertical end of the feeding push plate 17 is located inside the discharge port 15. In order to prevent the wood board from being pushed out of the collection box when the first cylinder 7 pushes the wood board to the collection box 6, the top of one vertical end of the feeding push plate 17 can be set higher than the top surface of the collection box 6. The top surface of the collection box 6 that is pushed out has a feeding port for feeding. An L-shaped through-slot 18 is placed at the horizontal end of the material pusher plate 17 and the other vertical end. A discharge plate 19 is installed between the input end of the transfer conveyor 14 and the bottom of the discharge port 15. A set of lifting cylinders 47 is installed on the other side of the transfer conveyor 14. The top rod of the lifting cylinder is equipped with an electric push rod 20 that drives the feeding pusher plate 17 to push the wooden boards in the collection box 6 through the discharge port 15 to the transfer conveyor 14. A first pressure sensor 21 is installed in the support plate 12. The bottom of the collection box 6 on the other side is equipped with a self-locking caster wheel 22, and a handle 23 is provided on the short side. Similarly, in order to prevent only the wooden boards with holes from being pushed to the outside of the collection box 6 on the other side of the transfer conveyor 14, a baffle can be installed on the top of the side of the collection box 6 away from the transfer conveyor.

[0064] Example 3 differs from Example 2 in that, as Figure 9-11As shown, the thickness detection device includes several third supports arranged in an inverted U-shape and several height limiting plates 37 for blocking wooden boards of different thicknesses. The two vertical ends of each third support are fixedly connected to the two sides of the rear end of each rear conveyor 11. Each height limiting plate 37 is detachably connected to the bottom of the horizontal end of the third support. The limiting baffle 34 is located in front of the height limiting plate 37 on the same rear conveyor 11. The distance between the bottom of the height limiting plate 37 and the upper conveying end face of the rear conveyor 11 is the detection distance d. Several detection distances d are arranged to decrease along the conveying direction. A second pressure sensor 38 is installed at the bottom of the front end face of each height limiting plate 37. The flipping drive 32 is a set of third cylinders located on both sides of the rear conveyor 11 and used to drive the rear conveyor 11 to flip downward. The bottom end of the third cylinder is located below the rear end of the rear conveyor 11 and is hinged to the frame 1. The top rod of the third cylinder is hinged to the front side of the rear conveyor 11.

[0065] In summary, compared with the prior art, this utility model has the advantages of high sorting efficiency, high sorting accuracy, and low labor intensity. The front conveyor 2 automatically transports vertically placed wooden boards. The image detection device 3, three collection boxes 6, and three first pushing components are used to collect and compare images of the wooden boards to identify and determine the surface type. If a surface defect is detected (only holes, only knots, or both knots and holes), the external controller controls the first pushing component corresponding to the detected surface defect type to push the wooden board into the corresponding collection box 6 containing that surface defect. When the surface of the board is qualified, the first pushing component does not work, and the front conveyor 2 continues to transport qualified boards, which serves to sort the boards according to their surface. The color recognition device 4, several second pushing components, several sets of partitions 5 and several sorting channels 9 are used to detect and identify the color category of the board and push the board to the front of the sorting channel 9 of the corresponding color. The board is then transported into the sorting channel 9 of the corresponding color by the front conveyor 2, thus realizing the color sorting of the qualified boards. The thickness detection device, sorting and conveying mechanism and several sets of sorting boxes 10 are used to sort boards with qualified surfaces but different colors and thicknesses.

[0066] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An automatic wood board sorting device, characterized in that: The system includes a frame and a front conveyor for transporting vertically placed wooden boards. Along the conveying direction, the front conveyor is sequentially equipped with an image detection device for detecting surface defects in the wooden boards, a sorting device, a color recognition device, and several sets of partitions. The sorting device includes three collection boxes and three first pushing components for pushing wooden boards with holes, wooden boards with knots, and wooden boards with both knots and holes into the three collection boxes respectively. The partitions are arranged along the width of the front conveyor, and a sorting channel for single wooden boards is formed between each set of partitions. Behind and in front of the sorting channel are thickness detection devices and several second pushing components for pushing wooden boards of different colors to the front of different sorting channels respectively. Below the output end of the front conveyor are several sets of sorting boxes for collecting wooden boards of different thicknesses, with each set having the same number as the sorting channels. The frame is equipped with a sorting conveying mechanism that transports the wooden boards in the sorting channels to the different sets of sorting boxes.

2. The automatic wood board sorting device according to claim 1, characterized in that: The first pushing assembly includes a first pushing plate and a first cylinder mounted on the frame. The first pushing plate is fixedly connected to the push rod of the first cylinder. The three collection boxes are arranged sequentially along the conveying direction of the front conveyor. Two of the collection boxes are used to collect planks with knots and planks with knots and holes, respectively, and are both located on one side of the front conveyor. The third collection box is used to collect planks with holes and is located on the other side of the front conveyor. A support plate for placing planks with surface defects is provided inside the collection box. A set of springs connects the bottom end of the support plate to the bottom end inside the collection box.

3. The automatic wood board sorting device according to claim 2, characterized in that: A transfer conveyor is provided on the side of the two collection boxes on the same side away from the front conveyor. The output end of the transfer conveyor is connected to a wood knot scanning, detection and cutting device. The top of the two collection boxes on the same side near the transfer conveyor has a discharge port. The bottom of the discharge port is flush with the upper conveying end face of the transfer conveyor. The top of the two collection boxes on the same side is provided with a U-shaped feeding push plate. One vertical end of the feeding push plate is located in the discharge port. The top surface of the collection box has an L-shaped through groove for placing the horizontal end and the other vertical end of the feeding push plate. A discharge plate is installed between the input end of the transfer conveyor and the bottom of the discharge port. A set of lifting cylinders is installed on the other side of the transfer conveyor. The top rod of the lifting cylinder is equipped with an electric push rod that drives the feeding push plate to push the wood boards in the collection box through the discharge port to the transfer conveyor. A first pressure sensor is installed in the support plate. The bottom of the collection box on the other side is equipped with self-locking casters and a handle is provided on the short side.

4. The automatic wood board sorting device according to claim 1, characterized in that: The partition is provided in three sets, and the sorting channel is provided along the front conveyor in three sets. The second pushing assembly is provided in two sets, and is located on both sides of the front conveyor respectively. The two second pushing assemblies are used to push the two different colored wooden boards to the front of the sorting channel on both sides. The second pushing assembly includes a second pushing plate and a second cylinder mounted on the frame. The second pushing plate is fixedly connected to the push rod of the second cylinder. Below the color recognition device and the image detection device, there is a set of intermediate limiting plates that are mounted above the front conveyor. A limiting detection channel for a single vertically placed wooden board to pass through is formed between the intermediate limiting plates. The limiting detection channel is connected to the intermediate sorting channel, and its width is the same as the width of the intermediate sorting channel.

5. The automatic wood board sorting device according to claim 4, characterized in that: The front end of the limit detection channel is tapered along the conveying direction. The two front ends of the partition in the middle group are respectively rotatably connected to a left guide plate and a right guide plate. The left guide plate and the right guide plate are arranged in an inverted V-shape, and a guide channel communicating with the middle sorting channel is formed between them. The guide channel is tapered along the conveying direction. A first bracket is mounted on the partition. The first bracket is equipped with a first motor and a second motor for driving the left guide plate and the right guide plate to rotate, respectively. The color recognition device is electrically connected to an external controller. The first motor, the second motor, and the second cylinder are all electrically connected to the output terminal of the external controller.

6. The automatic wood board sorting device according to claim 1, characterized in that: The sorting and conveying mechanism includes several rear conveyors arranged sequentially along the conveying direction of the wooden boards and a flipping drive component that drives the front end of the rear conveyors to flip up and down. The rear conveyors are located behind the output end of the front conveyors, and their upper conveying end faces are flush with the upper conveying end faces of the front conveyors. The rear ends of the rear conveyors are connected to rotating shafts on both sides, and the rotating shafts are connected to the frame through bearings. Each group of sorting boxes is located below a rear conveyor. Each rear conveyor is provided with an inverted U-shaped support frame above it. The two vertical ends of the support frame are fixedly connected to the two outer sides of the rear conveyor. Several groups of limiting baffles are installed at the bottom of the horizontal end of the support frame, arranged along the width direction of the rear conveyor, with the number of each group being the same as the number of partitions in each group. A limiting channel communicating with the sorting channel is formed between each group of limiting baffles.

7. An automatic wood board sorting device according to claim 6, characterized in that: The thickness detection device includes several sets of thickness detection sensors located in front of the rear conveyor and a second bracket arranged in a U-shape. The two vertical ends of the second bracket are mounted on the frame, and the two horizontal ends of the second bracket are located above and below the output end of the upper conveying end face of the front conveyor, respectively. Each set of thickness detection sensors has two sensors, which are respectively mounted on the two horizontal ends of the second bracket. Each set of thickness detection sensors is located behind each sorting channel, and the number of thickness detection sensors in each set is the same as the number of sorting channels.

8. An automatic wood board sorting device according to claim 6, characterized in that: The thickness detection device includes several inverted U-shaped third supports and several height limiting plates for blocking wooden boards of different thicknesses. The two vertical ends of each third support are fixedly connected to both sides of the rear end of each rear conveyor. Each height limiting plate is detachably connected to the bottom of the horizontal end of the third support. The limiting baffle is located in front of the height limiting plate on the same rear conveyor. The distance between the bottom of the height limiting plate and the upper conveying end face of the rear conveyor is the detection distance. The detection distances are arranged in descending order along the conveying direction. A second pressure sensor is installed at the bottom of the front end face of each height limiting plate. The flipping drive is a set of third cylinders located on both sides of the rear conveyor and used to drive the rear conveyor to flip downwards. The bottom end of the third cylinder is located below the rear end of the rear conveyor and is hinged to the frame. The top rod of the third cylinder is hinged to the front side of the rear conveyor.

9. An automatic wood board sorting device according to claim 1, characterized in that: The image detection device includes four detection cameras for detecting the four sides of the wooden board, a light shield arranged in a U-shape, and LED lights installed inside the light shield. The four detection cameras are respectively installed on the inner sides of the two vertical ends and two horizontal ends of the light shield. The middle of the light shield is a detection area for the wooden board to pass through and be detected. The front conveyor includes a short conveyor and a long conveyor arranged sequentially along the conveying direction. The light shield is erected between the input end of the long conveyor and the output end of the short conveyor. The two horizontal ends of the light shield are respectively located above and below the front conveyor.

Images