Detection device based on wood board defects

Abstract

The invention relates to the technical field of plank defect detection, in particular to a plank defect-based detection device which comprises a first support frame and a second support frame which are arranged in parallel, a first detection frame and a second detection frame are fixedly mounted on two sides between the first support frame and the second support frame respectively, and a plurality of linear array cameras are mounted on the first detection frame and the second detection frame respectively. The second supporting frame is arranged between the first supporting frame and the second supporting frame and used for conducting visual inspection on the surface of a wood board, a conveying belt is further arranged at the bottom between the first supporting frame and the second supporting frame and used for conveying the wood board, a supporting shaft is rotationally connected to the first supporting frame, and a driving part used for driving the supporting shaft is arranged on the first supporting frame; the other end of the supporting shaft is fixedly connected with a middle column, and a mounting hole is formed in the position, corresponding to the middle column, of the second supporting frame. According to the integrated detection device integrating the vision function and the knocking function, high-precision detection can be conducted on a wood board from inside to outside, and the wood board defect detection efficiency is further improved.

Description

Technical Field

[0001] This invention relates to the field of wood board defect detection technology, specifically to a detection device based on wood board defects. Background Technology

[0002] While existing methods for detecting defects in wood panels employ line scan cameras—which can achieve high-precision detection of surface defects (such as scratches, stains, and color differences) through high-speed scanning—they are limited by optical principles and cannot penetrate the wood panel to identify internal structural defects.

[0003] For solid wood boards, bulges caused by uneven drying, holes formed by delamination between plywood layers, and depressions inside composite boards cannot be detected by surface imaging technology.

[0004] Therefore, in the existing process of inspecting wooden boards, two workers work together to tap the boards one by one for testing. However, when manually tapping the boards, the tapping force and frequency depend on the worker's experience. Differences in operation between different workers lead to large fluctuations in the test results. Moreover, long-term repetitive tapping can easily lead to worker fatigue, further reducing the reliability of the test. To address this, we propose a detection device based on defects in wooden boards. Summary of the Invention

[0005] The purpose of this invention is to provide a detection device based on wood board defects to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a detection device for defects in wooden boards, comprising a first support frame and a second support frame arranged in parallel, with a first detection frame and a second detection frame fixedly installed on both sides between the two supports. Multiple line scan cameras are installed on both the first and second detection frames for visual inspection of the surface of the wooden boards. A conveyor belt is also provided at the bottom between the first and second support frames for conveying the wooden boards. A support shaft is rotatably connected to the first support frame, and a driving component for driving the support shaft is provided on the first support frame.

[0007] The other end of the support shaft is fixedly connected to a middle column, and the second support frame is provided with a mounting hole corresponding to the position of the middle column, with the other end of the middle column close to the mounting hole.

[0008] A connecting frame is fixedly connected to the outside of the intermediate column, and multiple openings are arranged around the connecting frame. A board clamping component is provided at the position of the intermediate column and the corresponding opening. The board clamping component is used to support the wooden board.

[0009] A striking detection element is also provided at the top between the first support frame and the second support frame. The striking detection element cooperates with the driving element to perform striking detection on the wooden board.

[0010] Furthermore, a first end plate and a second end plate are fixedly installed at both ends of the intermediate column, and both ends of the connecting frame are fixedly sleeved on the outside of the first end plate and the second end plate. One end of the first end plate extends to the outside of the mounting hole, and the first end plate is rotatably connected to the inner wall of the mounting hole through a bearing.

[0011] Furthermore, the plate clamping component includes a bidirectional threaded screw, a rotating gear, a slider, a sliding rod, a clamping shell, a synchronizing component, and an extending pusher. One end of the bidirectional threaded screw is rotatably connected to the first end plate, and the other end of the bidirectional threaded screw passes through the second end plate and is fixedly connected to the rotating gear.

[0012] The slider is provided in two parts, and the two sliders are respectively threaded to both ends of the bidirectional threaded screw. One end of the slide rod is fixedly connected to the slider, and the clamping shell is slidably sleeved on the outside of the slide rod. The synchronizing element is arranged between the two clamping shells.

[0013] Both clamping shells are rotatably connected to a rotating shaft at the end away from the synchronizing member. One end of the rotating shaft is fixedly connected to a clamping plate, and the two clamping plates clamp and fix the wooden board to each other.

[0014] A guide shell is slidably sleeved on the outer side of the other end of the rotating shaft, and a guide sleeve is provided on the guide shell corresponding to the position of the rotating shaft. Two guide grooves are also provided on the inner wall of the guide sleeve. Two guide bars are installed on the outer side of the rotating shaft, and the guide bars are slidably connected to the guide grooves. A groove is provided on the connecting frame corresponding to the position of the guide shell, and the guide shell is slidably connected to the groove. A rotating component is installed on one of the guide shells. The rotating component is used to drive the guide sleeve. A helical gear rack is installed on the first support frame for driving the rotating component.

[0015] The extending pusher is located on the outer surface of the middle column, and the extending pusher pushes the two clamping shells synchronously through the pushing synchronization member. Through the provided plate clamping member, the wooden board is stably clamped.

[0016] Furthermore, the synchronizing element includes a synchronizing rod and a synchronizing sleeve. One end of the synchronizing rod is fixedly connected to one of the clamping shells, and one end of the synchronizing sleeve is fixedly connected to the other clamping shell. The other end of the synchronizing rod is slidably connected inside the synchronizing sleeve.

[0017] Furthermore, the extending pusher includes a rotating sleeve, an eccentric block, a connecting rod, a support plate, and a rotating component. The rotating sleeve is sleeved on the outer side of the middle position of the bidirectional threaded screw, and the eccentric block is fixedly sleeved on the outer side of the rotating sleeve. The support plate is fixedly installed on the intermediate column, and the support plate is used to support the rotating sleeve.

[0018] Both sides of the eccentric block are provided with surrounding grooves. The connecting rod is L-shaped. One end of the connecting rod is slidably connected to the surrounding groove, and the other end of the connecting rod is fixedly connected to the synchronizing sleeve. The rotating component is installed on the intermediate column and is used to drive the rotating sleeve. Through the provided extended pushing component, the synchronizing component is pushed.

[0019] Furthermore, a fixing frame is also installed on the first support frame, and the fixing frame is located outside the mounting hole. A telescopic cylinder is installed on the fixing frame, and a movable rack is fixedly connected to the output end of the telescopic cylinder. The movable rack is used to push the rotating gear.

[0020] Furthermore, the impact detection component includes a reciprocating top plate, a limiting frame, an impact component, and a running component. The reciprocating top plate is located above the first support frame and the second support frame. One end of the reciprocating top plate is connected to the driving component. The limiting frame is fixedly installed on the first support frame, and one end of the reciprocating top plate is slidably connected to the limiting frame.

[0021] The set of striking elements is provided in multiples, and the multiple striking elements are equally spaced on the reciprocating top plate. The running element is provided on the reciprocating top plate and drives the multiple striking elements one by one. Through the provided striking detection element, the function of striking the wooden board point by point can be realized.

[0022] Furthermore, the striking component includes a positioning frame, a striking rod, a striking block, a sound sensor, a reciprocating sleeve, and a reciprocating component. The positioning frame is fixedly installed at the bottom of the reciprocating top plate, and the striking rod slides through the positioning frame. The bottom of the striking rod is fixedly connected to the striking block, and the sound sensor is installed on the positioning frame.

[0023] The reciprocating sleeve is fixedly installed on the top of the striking rod, and the reciprocating component is set on the reciprocating top plate. The reciprocating component is used to drive the reciprocating sleeve. Through the provided striking component, the wooden board is struck.

[0024] Furthermore, the reciprocating component includes a reciprocating shaft, a reciprocating gear, and a reciprocating rod. The reciprocating shaft passes through the reciprocating top plate and is rotatably connected to the reciprocating top plate. The reciprocating gear is fixedly installed on the top of the reciprocating shaft, and the bottom of the reciprocating rod is fixedly installed on the bottom of the reciprocating shaft. The outer side of the reciprocating rod is provided with two continuous V-shaped reciprocating grooves, and two limiting rods are slidably connected at the reciprocating grooves. Both limiting rods are fixedly installed on the inner wall of the reciprocating sleeve. Through the provided reciprocating component, the reciprocating sleeve is reciprocated.

[0025] Furthermore, a soundproof cover is provided at the top between the first support frame and the second support frame, and the soundproof cover is provided with guide holes corresponding to the position of the striking element.

[0026] The present invention has at least the following beneficial effects:

[0027] 1. When the present invention is used, a first support frame and a second support frame are provided, and a first detection frame and a second detection frame are provided between the first support frame and the second support frame. Multiple line scan cameras on the two detection frames can achieve high-precision detection of defects on the outer surface of the wooden board.

[0028] 2. The present invention uses a striking detection element provided on the first support frame and the second support frame to detect defects on the surface of the wooden board, and at the same time, it can also strike the wooden board point by point to achieve a comprehensive inspection of the interior of the wooden board.

[0029] 3. The board clamping component in this invention can cooperate with the driving component and the impact detection component to achieve stable picking and flipping of the board during the inspection process, and to provide stable support for the board when passing through.

[0030] 4. The present invention provides an integrated inspection device that combines vision and tapping functions, which facilitates real-time inspection of wooden boards. The integrated design also makes it easy to transport. It enables rapid and high-precision inspection of wooden boards from the inside to the outside, further improving the efficiency of wooden board defect detection. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a side view of the overall structure of the present invention;

[0033] Figure 3 This is a schematic diagram of the rotating plate structure of the present invention;

[0034] Figure 4 This is a schematic diagram of the support shaft structure of the present invention;

[0035] Figure 5 This is a schematic diagram of the fixing frame structure of the present invention;

[0036] Figure 6 This is a schematic diagram of the intermediate column structure of the present invention;

[0037] Figure 7 For the present invention Figure 6 Enlarged structural diagram of region A in the middle;

[0038] Figure 8 This is a schematic diagram of the first end plate structure of the present invention;

[0039] Figure 9 This is a schematic diagram of the striking component structure of the present invention;

[0040] Figure 10 This is a schematic diagram of the connecting frame structure of the present invention;

[0041] Figure 11 This is a schematic diagram of the sheet metal clamping component of the present invention;

[0042] Figure 12 For the present invention Figure 11 Enlarged structural diagram of region B in the middle;

[0043] Figure 13 This is a schematic diagram of the rotating component structure of the present invention.

[0044] In the diagram: 1-First support frame; 11-Support shaft; 12-Fixed frame; 121-Telescopic cylinder; 122-Moving rack; 2-Second support frame; 3-First inspection frame; 31-Second inspection frame; 32-Line scan camera; 4-Conveyor belt; 5-Driver; 51-Drive motor; 52-Drive shaft; 53-Drive plate; 54-Arc block; 55-Push shaft; 56-Synchronous support rod; 57-Rotating plate; 6-Intermediate column; 61-First End plate; 62-Second end plate; 7-Connecting frame; 71-Opening; 8-Plate clamping component; 81-Double threaded screw; 82-Rotating gear; 83-Slider; 84-Slide rod; 85-Clamping shell; 86-Synchronizing component; 861-Synchronizing rod; 862-Synchronizing sleeve; 87-Extending pusher; 871-Rotating sleeve; 872-Eccentric block; 8721-Circling groove; 873-Connecting rod; 874-Support plate; 875-Rotating... Moving component; 88-Rotating shaft; 881-Clamping plate; 882-Guide bar; 89-Guide housing; 891-Guide sleeve; 892-Rotating component; 8921-Worm gear; 8922-Worm wheel; 8923-Rotating rod; 8924-First rotating gear; 8925-Second rotating gear; 8926-Drive rod; 8927-Drive helical gear; 893-Helical gear rack; 9-Impact detection component; 91-Reciprocating top plate; 92-Limiting frame; 93 - Striking component; 931- Positioning bracket; 932- Striking rod; 933- Striking block; 934- Sound sensor; 935- Reciprocating sleeve; 936- Reciprocating component; 9361- Reciprocating shaft; 9362- Reciprocating gear; 9363- Reciprocating rod; 9364- Reciprocating groove; 9365- Limiting rod; 94- Running component; 941- Rotating lead screw; 942- Rotating motor; 943- Guide rack; 944- Moving sleeve; 95- Soundproof cover. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Example 1

[0047] Please see Figures 1 to 5A detection device for defects in wooden boards includes a first support frame 1 and a second support frame 2 arranged in parallel. A first detection frame 3 and a second detection frame 31 are fixedly installed on both sides between the two support frames 1 and 2, respectively. Multiple line scan cameras 32 are installed on both the first detection frame 3 and the second detection frame 31 for visual inspection of the wooden board surface. In this invention, the line scan cameras 32 achieve the function of detecting the wooden board surface by scanning the image line by line. At the same time, multiple indicator lights are provided on both the first detection frame 3 and the second detection frame 31. The indicator lights are opposite to the line scan cameras 32. When a defect is detected, the indicator light lights up red to visually indicate the location of the defect and transmit the signal to the controller. After the controller parses the data, it displays the defect details, statistical reports and alarm information on the terminal device such as HMI or PC software.

[0048] A conveyor belt 4 is also provided at the bottom between the first support frame 1 and the second support frame 2. The wooden board can be conveyed through the conveyor belt 4. After the wooden board is inspected, it can be stably placed on the conveyor belt 4 and exported through the conveyor belt 4, which is convenient for the inspection and use of the wooden board. A positioning clamp can also be provided on the outside of the conveyor belt 4. The positioning clamp can be used in conjunction with the conveyor belt 4 to clamp and fix the wooden board.

[0049] The conveyor belt 4 is used to convey the wooden boards. The first support frame 1 is rotatably connected to the support shaft 11, and the first support frame 1 is provided with a drive component 5 for driving the support shaft 11.

[0050] The other end of the support shaft 11 is fixedly connected to the intermediate column 6. The second support frame 2 is provided with a mounting hole corresponding to the position of the intermediate column 6. The other end of the intermediate column 6 is close to the mounting hole.

[0051] A connecting frame 7 is fixedly connected to the outside of the middle column 6, and multiple openings 71 are arranged around the connecting frame 7. In this application, the connecting frame 7 has six sides, and openings 71 are provided at the positions of the six sides. Each of the six openings 71 is provided with a board clamping member 8. The middle column 6 is provided with a board clamping member 8 at the position of the opening 71. The board clamping member 8 is used to support the wooden board.

[0052] The two ends of the intermediate column 6 are respectively fixedly installed with a first end plate 61 and a second end plate 62, and both ends of the connecting frame 7 are fixedly sleeved on the outside of the first end plate 61 and the second end plate 62. One end of the first end plate 61 extends to the outside of the mounting hole, and the first end plate 61 is rotatably connected to the inner wall of the mounting hole through a bearing.

[0053] Please see Figure 8 and Figures 10 to 13The plate clamping component 8 includes a bidirectional threaded screw 81, a rotating gear 82, a slider 83, a slide bar 84, a clamping shell 85, a synchronizing component 86, and an extending pusher 87. One end of the bidirectional threaded screw 81 is rotatably connected to the first end plate 61, and the other end of the bidirectional threaded screw 81 passes through the second end plate 62 and is fixedly connected to the rotating gear 82.

[0054] Two sliders 83 are provided, and the two sliders 83 are respectively threaded to both ends of the bidirectional threaded screw 81. One end of the slide rod 84 is fixedly connected to the slider 83, and the clamping shell 85 is slidably sleeved on the outside of the slide rod 84. The synchronizing element 86 is provided between the two clamping shells 85.

[0055] The ends of the two clamping shells 85 away from the synchronizing member 86 are rotatably connected to a rotating shaft 88. One end of the rotating shaft 88 is fixedly connected to a clamping plate 881, and the two clamping plates 881 clamp and fix the wooden board to each other.

[0056] A guide shell 89 is slidably sleeved on the outer side of the other end of the rotating shaft 88, and a guide sleeve 891 is provided on the guide shell 89 corresponding to the position of the rotating shaft 88. The guide sleeve 891 passes through one side of the guide shell 89 and is rotatably connected to the guide shell 89. The inner wall of the guide sleeve 891 is also provided with two guide grooves. Two guide bars 882 are installed on the outer side of the rotating shaft 88, and the guide bars 882 are slidably connected to the guide grooves.

[0057] The connecting frame 7 has a groove corresponding to the guide shell 89, and the guide shell 89 is slidably connected to the groove. A rotating part 892 is installed on one of the guide shells 89. The rotating part 892 is used to drive the guide sleeve 891. A helical gear rack 893 is installed on the first support frame 1 to drive the rotating part 892.

[0058] As a further supplementary explanation, the rotating component 892 includes a worm 8921, a worm wheel 8922, a rotating rod 8923, a first rotating gear 8924, a second rotating gear 8925, a drive rod 8926, and a drive helical gear 8927.

[0059] The worm 8921 is rotatably connected inside the guide housing 89, and the worm wheel 8922 is fixedly sleeved on the outside of the guide sleeve 891. The worm 8921 and the worm wheel 8922 are meshed together. The rotating rod 8923 is fixedly installed on the top of the worm 8921. The first rotating gear 8924 is fixedly sleeved on the outside of the rotating rod 8923. The drive rod 8926 passes through one side of the guide housing 89 and is rotatably connected to the guide housing 89. The second rotating gear 8925 is fixedly sleeved on the outside of the drive rod 8926, and the first rotating gear 8924 and the second rotating gear 8925 are meshed together. The drive helical gear 8927 is located on the outside of the guide housing 89 and is fixedly installed on one end of the drive rod 8926.

[0060] Specifically, when the driving helical gear 8927 moves to the position of the helical gear rack 893 along with the rotation of the connecting frame 7, the driving helical gear 8927 meshes with the helical gear rack 893 and rotates synchronously. Simultaneously, the driving helical gear 8927 rotates, driving the driving rod 8926 to rotate. At this time, the first rotating gear 8924 drives the second rotating gear 8925 to rotate, which in turn causes the rotating rod 8923 to drive the worm gear 8921 to rotate. The worm gear 8922 drives the guide sleeve 891 to rotate relative to the guide shell 89. The guide sleeve 891 then drives the rotating shaft 88 to rotate via the guide bar 882. At this time, the rotating shaft 88 drives the wooden board to flip through the clamping plate 881 until the driving helical gear 8927 disengages from the position of the helical gear rack 893. Then the wooden board is flipped 180°. Subsequently, the wooden board rotates with the connecting frame 7 to the second inspection frame 31. The line scan camera 32 at the second inspection frame 31 can detect defects on the other side of the wooden board.

[0061] The protruding pusher 87 is disposed on the outer surface of the intermediate column 6, and the protruding pusher 87 pushes the two clamping shells 85 synchronously by pushing the synchronizing member 86.

[0062] The synchronizing component 86 includes a synchronizing rod 861 and a synchronizing sleeve 862. One end of the synchronizing rod 861 is fixedly connected to one of the clamping shells 85, and one end of the synchronizing sleeve 862 is fixedly connected to the other clamping shell 85. The other end of the synchronizing rod 861 is slidably connected inside the synchronizing sleeve 862.

[0063] The extended pusher 87 includes a rotating sleeve 871, an eccentric block 872, a connecting rod 873, a support plate 874, and a rotating component 875. The rotating sleeve 871 is sleeved on the outer side of the middle position of the bidirectional threaded screw 81, and the eccentric block 872 is fixedly sleeved on the outer side of the rotating sleeve 871. The support plate 874 is fixedly installed on the intermediate column 6 and is used to support the rotating sleeve 871.

[0064] Both sides of the eccentric block 872 are provided with surrounding grooves 8721. The connecting rod 873 is L-shaped. One end of the connecting rod 873 is slidably connected to the surrounding groove 8721, and the other end of the connecting rod 873 is fixedly connected to the synchronous sleeve 862. The rotating part 875 is installed on the intermediate column 6, and the rotating part 875 is used to drive the rotating sleeve 871.

[0065] Specifically, the rotating component 875 includes an electric push rod, a push rack, and a push gear. The electric push rod is fixedly mounted on the intermediate column 6, and the output end of the electric push rod is fixedly connected to the push rack. The push gear is fixedly sleeved on the outside of the rotating sleeve 871, and the push gear is meshed with the push rack.

[0066] Furthermore, the operation of the electric push rod synchronously drives the rack to move. While the rack moves, it drives the rotating sleeve 871 to rotate through the gear. The rotating sleeve 871 then drives the eccentric block 872 to rotate.

[0067] Specific implementation process: In this invention, when the opening 71 of the connecting frame 7 rotates to be directly above the conveyor belt 4, the inspected wooden board can be placed on the conveyor belt 4. Then, the uninspected wooden board is clamped. First, the rotating component 875 runs, causing the rotating sleeve 871 to drive the eccentric block 872 to rotate. The eccentric block 872 drives the connecting rod 873 through the surrounding groove 8721. Then, the connecting rod 873 drives the two clamping shells 85 to extend towards the conveyor belt 4 through the synchronizing component 86 until the wooden board is close to the upper surface of the conveyor belt 4.

[0068] A fixed frame 12 is also installed on the first support frame 1, and the fixed frame 12 is located outside the mounting hole. A telescopic cylinder 121 is installed on the fixed frame 12, and a movable rack 122 is fixedly connected to the output end of the telescopic cylinder 121. The movable rack 122 is used to push the rotating gear 82.

[0069] At this time, the telescopic cylinder 121 operates, driving the rotating gear 82 at this position to rotate via the moving rack 122. As the rotating gear 82 rotates, it drives the bidirectional threaded screw 81 to rotate. The bidirectional threaded screw 81 provides two sliders 83 with driving forces in opposite directions. The sliders 83 drive the two clamping shells 85 to move in opposite directions via the sliding rod 84, thereby detaching the wooden board. Subsequently, the rotating component 875 works in conjunction with the telescopic cylinder 121 to clamp the undetected wooden board. When the wooden board is clamped to the opening 71, the connecting frame 7 rotates to detect the wooden board.

[0070] Please see Figures 5 to 9 The top between the first support frame 1 and the second support frame 2 is also provided with a knocking detection element 9. The knocking detection element 9 cooperates with the driving element 5 to knock the wooden board.

[0071] The impact detection component 9 includes a reciprocating top plate 91, a limiting frame 92, an impact component 93, and a running component 94. The reciprocating top plate 91 is located above the first support frame 1 and the second support frame 2. One end of the reciprocating top plate 91 is connected to the driving component 5. The limiting frame 92 is fixedly installed on the first support frame 1, and one end of the reciprocating top plate 91 is slidably connected to the limiting frame 92.

[0072] Multiple striking elements 93 are provided, and the multiple striking elements 93 are equally spaced on the reciprocating top plate 91. The running element 94 is provided on the reciprocating top plate 91, and the running element 94 drives the multiple striking elements 93 one by one.

[0073] The striking component 93 includes a positioning frame 931, a striking rod 932, a striking block 933, a sound sensor 934, a reciprocating sleeve 935, and a reciprocating component 936. The positioning frame 931 is fixedly installed at the bottom of the reciprocating top plate 91, and the striking rod 932 slides through the positioning frame 931. The bottom of the striking rod 932 is fixedly connected to the striking block 933. The sound sensor 934 is installed on the positioning frame 931. In this application, a vibration sensor can also be installed on the positioning frame 931. The sound sensor 934 (such as a microphone array) and the vibration sensor (such as an accelerometer) analyze the signals to identify internal defects.

[0074] The reciprocating sleeve 935 is fixedly installed on the top of the striking rod 932, and the reciprocating component 936 is set on the reciprocating top plate 91, and the reciprocating component 936 is used to drive the reciprocating sleeve 935.

[0075] The reciprocating component 936 includes a reciprocating shaft 9361, a reciprocating gear 9362, and a reciprocating rod 9363. The reciprocating shaft 9361 passes through the reciprocating top plate 91 and is rotatably connected to the reciprocating top plate 91. The reciprocating gear 9362 is fixedly installed on the top of the reciprocating shaft 9361, and the bottom of the reciprocating rod 9363 is fixedly installed on the bottom of the reciprocating shaft 9361. Two continuous V-shaped reciprocating grooves 9364 are provided on the outer side of the reciprocating rod 9363, and two limiting rods 9365 are slidably connected at the reciprocating grooves 9364. Both limiting rods 9365 are fixedly installed on the inner wall of the reciprocating sleeve 935.

[0076] A soundproof cover 95 is also provided at the top between the first support frame 1 and the second support frame 2. The soundproof cover 95 is provided with a guide hole corresponding to the position of the striking member 93. The soundproof cover 95 can effectively isolate external sound when the wooden board is struck, thus ensuring the detection environment of the sound sensor 934.

[0077] As a further supplementary explanation, the running component 94 includes a rotating lead screw 941, a rotating motor 942, and a guide rack 943. The rotating lead screw 941 is rotatably connected to the reciprocating top plate 91, and the rotating motor 942 is used to drive the rotating lead screw 941. A movable sleeve 944 is threaded onto the outer side of the rotating lead screw 941, and the movable sleeve 944 is slidably connected to the reciprocating top plate 91. The guide rack 943 is fixedly installed on the movable sleeve 944. The rotating motor 942 drives the rotating lead screw 941 to rotate synchronously. While the rotating lead screw 941 rotates, it provides driving force to the movable sleeve 944. Due to the limiting effect of the upper surface of the reciprocating top plate 91, the movable sleeve 944 drives the guide rack 943 to move sequentially along the directions of multiple reciprocating gears 9362.

[0078] Specific implementation process: As the drive unit 5 operates, when one of the openings 71 on the connecting frame 7 rotates to a position directly below the reciprocating top plate 91, the reciprocating top plate 91 moves down synchronously, and multiple striking blocks 933 approach the surface of the wooden board. At this time, the rotating motor 942 runs, thereby causing the guide rack 943 to move sequentially along the positions of multiple reciprocating gears 9362. When a guide rack 943 passes through a reciprocating gear 9362 and disengages from the position of the reciprocating gear 9362, the reciprocating gear 9362 drives the reciprocating shaft 9361 to rotate two revolutions.

[0079] When the reciprocating shaft 9361 rotates, it drives the reciprocating rod 9363 to rotate synchronously. The reciprocating rod 9363 then drives the limiting rod 9365 through the reciprocating groove 9364. At this time, the limiting rod 9365, connected by the reciprocating sleeve 935, drives the striking rod 932 to move up and down relative to the positioning frame 931. When the reciprocating shaft 9361 rotates two revolutions, the striking block 933, along with the striking rod 932, strikes the wooden board twice downwards. In this application, each point on the wooden board is struck twice, and the sound sensor 934 detects the impact, thereby integrating multiple striking signals to highlight key features (such as abnormal frequency bands in defect areas). The sound sensor 934 then sends the corresponding signal to the controller. After parsing the data, the controller displays defect details, statistical reports, and alarm information on the terminal device (such as HMI or PC software).

[0080] Example 2

[0081] Please see Figures 3 to 4 Example 2 further explains the driving component 5 in Example 1. Specifically, the driving component 5 includes a drive motor 51, a drive shaft 52, a drive plate 53, an arc block 54, a push shaft 55, a synchronous support rod 56, and a rotating plate 57. The drive motor 51 is fixedly mounted on the first support frame 1, and the output end of the drive motor 51 is fixedly connected to the drive shaft 52. The drive plate 53 is fixedly mounted on one end of the drive shaft 52. One end of the synchronous support rod 56 is fixedly connected to the drive plate 53 through a pin, and the other end of the synchronous support rod 56 is rotatably connected to one end of the bottom of the reciprocating top plate 91 through a pin.

[0082] The arc-shaped block 54 is arc-shaped, and both the push shaft 55 and the arc-shaped block 54 are fixedly installed on the side of the active plate 53 away from the synchronous support rod 56. The rotating plate 57 is fixedly sleeved on the outside of the support shaft 11. The rotating plate 57 is provided with an arc-shaped groove corresponding to the position of the arc-shaped block 54, and the rotating block is provided with a drive port corresponding to the position of the push shaft 55. In this application, the arc-shaped groove is preferably provided with six, and the drive port is preferably provided with six. The six arc-shaped grooves and the six drive ports are staggered.

[0083] When the drive motor 51 is running, it drives the drive plate 53 to rotate through the drive shaft 52. While the drive plate 53 is rotating, it drives the synchronous support rod 56 to move. The synchronous support rod 56 then drives the reciprocating top plate 91 to move relative to the top of the connecting frame 7.

[0084] For example, when the arc-shaped block 54 rotates 150° with the active plate 53, the push shaft 55 rotates to the direction of the drive port and drives the rotating plate 57 to rotate until the push shaft 55 disengages from the drive port. At this time, the rotating plate 57 rotates 60°, and the arc-shaped block 54 slides in contact with the arc-shaped groove. In this application, when the active plate 53 rotates 360°, the rotating plate 57 rotates 60°, thereby achieving precise coordination between the movement of the reciprocating top plate 91 and the rotation of the connecting frame 7, and realizing efficient detection of the wooden board.

[0085] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0086] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detection device for defects in wooden boards, comprising a first support frame (1) and a second support frame (2) arranged in parallel, with a first detection frame (3) and a second detection frame (31) fixedly installed on both sides between them respectively. Multiple line scan cameras (32) are installed on both the first detection frame (3) and the second detection frame (31) for visual inspection of the wooden board surface. A conveyor belt (4) is also provided at the bottom between the first support frame (1) and the second support frame (2) for conveying the wooden boards. The device is characterized in that: The first support frame (1) is rotatably connected to a support shaft (11), and the first support frame (1) is provided with a drive component (5) for driving the support shaft (11). The other end of the support shaft (11) is fixedly connected to the intermediate column (6), and the second support frame (2) is provided with a mounting hole corresponding to the position of the intermediate column (6). The other end of the intermediate column (6) is close to the mounting hole. A connecting frame (7) is fixedly connected to the outside of the intermediate column (6), and multiple openings (71) are provided around the connecting frame (7). A board clamping member (8) is provided at the position of the intermediate column (6) and the corresponding opening (71). The board clamping member (8) is used to support the board. A knocking detection element (9) is also provided at the top between the first support frame (1) and the second support frame (2). The knocking detection element (9) cooperates with the driving element (5) to knock the wooden board.

2. The detection device based on wood board defects according to claim 1, characterized in that: The two ends of the intermediate column (6) are respectively fixedly installed with a first end plate (61) and a second end plate (62), and both ends of the connecting frame (7) are fixedly sleeved on the outside of the first end plate (61) and the second end plate (62). One end of the first end plate (61) extends to the outside of the mounting hole, and the first end plate (61) is rotatably connected to the inner wall of the mounting hole through a bearing.

3. The detection device based on wood board defects according to claim 1, characterized in that: The plate clamping component (8) includes a bidirectional threaded screw (81), a rotating gear (82), a slider (83), a slide bar (84), a clamping shell (85), a synchronizing component (86), and an extending pusher (87). One end of the bidirectional threaded screw (81) is rotatably connected to the first end plate (61), and the other end of the bidirectional threaded screw (81) passes through the second end plate (62) and is fixedly connected to the rotating gear (82). Two sliders (83) are provided, and the two sliders (83) are respectively threaded to both ends of the bidirectional threaded screw (81). One end of the slide rod (84) is fixedly connected to the slider (83), and the clamping shell (85) is slidably sleeved on the outside of the slide rod (84). The synchronizing element (86) is provided between the two clamping shells (85). The ends of the two clamping shells (85) away from the synchronizing member (86) are rotatably connected to a rotating shaft (88), and one end of the rotating shaft (88) is fixedly connected to a clamping plate (881), and the two clamping plates (881) clamp and fix the wooden board to each other; A guide shell (89) is slidably sleeved on the outer side of the other end of the rotating shaft (88), and a guide sleeve (891) is provided on the guide shell (89) at the position corresponding to the rotating shaft (88). The inner wall of the guide sleeve (891) is also provided with two guide grooves. Two guide bars (882) are installed on the outer side of the rotating shaft (88), and the guide bars (882) are slidably connected to the guide grooves. The connecting frame (7) has a groove corresponding to the guide shell (89), and the guide shell (89) is slidably connected to the groove. A rotating component (892) is installed on one of the guide shells (89). The rotating component (892) is used to drive the guide sleeve (891). A helical gear rack (893) is installed on the first support frame (1) to drive the rotating component (892). The extended pusher (87) is disposed on the outer surface of the intermediate column (6), and the extended pusher (87) pushes the two clamping shells (85) synchronously by pushing the synchronizing member (86).

4. The detection device based on wood board defects according to claim 3, characterized in that: The synchronizing element (86) includes a synchronizing rod (861) and a synchronizing sleeve (862). One end of the synchronizing rod (861) is fixedly connected to one of the clamping shells (85), and one end of the synchronizing sleeve (862) is fixedly connected to the other clamping shell (85). The other end of the synchronizing rod (861) is slidably connected inside the synchronizing sleeve (862).

5. The detection device based on wood board defects according to claim 3, characterized in that: The extension pusher (87) includes a rotating sleeve (871), an eccentric block (872), a connecting rod (873), a support plate (874), and a rotating component (875). The rotating sleeve (871) is sleeved on the outside of the middle position of the bidirectional threaded screw (81), and the eccentric block (872) is fixedly sleeved on the outside of the rotating sleeve (871). The support plate (874) is fixedly installed on the intermediate column (6), and the support plate (874) is used to support the rotating sleeve (871). Both sides of the eccentric block (872) are provided with surrounding grooves (8721). The connecting rod (873) is L-shaped. One end of the connecting rod (873) is slidably connected to the surrounding groove (8721), and the other end of the connecting rod (873) is fixedly connected to the synchronous sleeve (862). The rotating component (875) is installed on the intermediate column (6), and the rotating component (875) is used to drive the rotating sleeve (871).

6. The detection device based on wood board defects according to claim 3, characterized in that: The first support frame (1) is also equipped with a fixed frame (12), and the fixed frame (12) is located outside the mounting hole. The fixed frame (12) is equipped with a telescopic cylinder (121), and the output end of the telescopic cylinder (121) is fixedly connected to a movable rack (122). The movable rack (122) is used to push the rotating gear (82).

7. The detection device based on wood board defects according to claim 1, characterized in that: The impact detection component (9) includes a reciprocating top plate (91), a limiting frame (92), an impact component (93), and a running component (94). The reciprocating top plate (91) is located above the first support frame (1) and the second support frame (2). One end of the reciprocating top plate (91) is connected to the driving component (5). The limiting frame (92) is fixedly installed on the first support frame (1), and one end of the reciprocating top plate (91) is slidably connected to the limiting frame (92). The striking element (93) is provided in multiple ways, and the multiple striking elements (93) are arranged at equal distances on the reciprocating top plate (91). The running element (94) is arranged on the reciprocating top plate (91), and the running element (94) drives the multiple striking elements (93) one by one.

8. The detection device based on wood board defects according to claim 7, characterized in that: The striking component (93) includes a positioning frame (931), a striking rod (932), a striking block (933), a sound sensor (934), a reciprocating sleeve (935), and a reciprocating component (936). The positioning frame (931) is fixedly installed at the bottom of the reciprocating top plate (91), and the striking rod (932) slides through the positioning frame (931). The bottom of the striking rod (932) is fixedly connected to the striking block (933), and the sound sensor (934) is installed on the positioning frame (931). The reciprocating sleeve (935) is fixedly installed on the top of the striking rod (932), and the reciprocating component (936) is disposed on the reciprocating top plate (91), and the reciprocating component (936) is used to drive the reciprocating sleeve (935).

9. The detection device based on wood board defects according to claim 8, characterized in that: The reciprocating component (936) includes a reciprocating shaft (9361), a reciprocating gear (9362), and a reciprocating rod (9363). The reciprocating shaft (9361) passes through the reciprocating top plate (91) and is rotatably connected to the reciprocating top plate (91). The reciprocating gear (9362) is fixedly installed on the top of the reciprocating shaft (9361), and the bottom of the reciprocating rod (9363) is fixedly installed on the bottom of the reciprocating shaft (9361). The outer side of the reciprocating rod (9363) is provided with two continuous V-shaped reciprocating grooves (9364), and two limiting rods (9365) are slidably connected at the reciprocating grooves (9364). Both limiting rods (9365) are fixedly installed on the inner wall of the reciprocating sleeve (935).

10. A detection device based on wood board defects according to claim 7, characterized in that: A soundproof cover (95) is provided at the top between the first support frame (1) and the second support frame (2), and the soundproof cover (95) is provided with a guide hole at the position corresponding to the striking part (93).

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