Wood board surface defect detection device

Abstract

The invention provides a wood board surface defect detection device. The wood board surface defect detection device comprises a detection device. Transfer assemblies are arranged at the two ends of the detection device correspondingly. The detection device is provided with a conveying assembly, an optical detection mechanism, a marking mechanism and a plurality of limiting mechanisms. The optical detection mechanism, the marking mechanism and the limiting mechanism are arranged on the upper portion of the conveying assembly. The plurality of limiting mechanisms are respectively arranged on the left side surface and the right side surface of the to-be-detected plate; the marking mechanism is arranged on the rear side of the optical detection mechanism and is used for marking the positions with defects on the surfaces of the plates; the transferring assembly is provided with a rotating cylinder and a plurality of bearing plates, the bearing plates are arranged on the rotating cylinder, the multiple bearing plates are arranged in an array, and the rotating cylinder drives the bearing plates to drive the plates to rotate. The plate is moved from the horizontal state to the vertical state through the transfer assembly, then the front face and the back face of the plate are detected through the optical detection mechanism, the defect positions are marked through the marking mechanism, and the detection efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of board detection and production, in particular to a device for detecting surface defects of wooden boards. Background Art

[0002] Wood panels, as a key building material widely used in the construction field, are made by bonding multiple layers of wood sheets tightly together with adhesives. The existing production process of panels has many steps: first, the wood is cut into thin sheets of set size; then, these thin sheets are bonded with adhesives, stacked layer by layer, and then compacted and polished; finally, beautiful and durable panels are pasted on the upper and lower surfaces of the panels, thus completing the entire production process of the panels.

[0003] In the production process of boards, surface inspection is a crucial link. In particular, for defects such as cracks, wormholes, knots, corrosion, etc. that may exist in wooden boards, the timely discovery and repair of these defects are crucial to ensure the quality of the boards. However, under existing technical conditions, defect detection of boards is often carried out mechanically, and the front and back sides of the boards need to be inspected separately. Although this detection method is partially mechanized, it is still inefficient and time-consuming. It cannot meet the demand for rapid detection of boards in production, thus restricting the improvement of production efficiency. Summary of the invention

[0004] In order to overcome some of the problems mentioned in the above background, the present invention provides a wooden board surface defect detection device, which can detect the front and back sides of the board at the same time, thereby improving the detection efficiency of the board.

[0005] The technical solution adopted by the present invention is as follows: a device for detecting surface defects of a wood board, comprising a detection device, both ends of which are provided with a transfer assembly, the detection device comprising a conveying assembly, an optical detection mechanism, a marking mechanism and a plurality of limit mechanisms, The optical detection mechanism, the marking mechanism and the limiting mechanism are respectively arranged on the conveying assembly; The conveying assembly is configured to convey the plate to be inspected, and the plurality of limit mechanisms are respectively arranged on two opposite sides of the plate to be inspected; The marking mechanism is arranged at the rear side of the optical detection mechanism and is used to mark the defective position on the surface of the plate; The transfer assembly includes a rotating drum and a plurality of supporting plates, wherein the supporting plates are arranged on the rotating drum and the plurality of supporting plates are arranged in an array, and the rotating drum drives the supporting plates to rotate the plates, so as to realize movement of the plates from a horizontal state to a vertical state.

[0006] Furthermore, the rotating cylinder is provided with a cavity and a plurality of slide grooves, the slide grooves are arranged on the rotating cylinder, a propulsion mechanism is provided in the cavity, the propulsion mechanism is connected to the slide grooves, and the propulsion mechanism is configured to drive the plate on the carrying plate to move; Brackets are respectively provided at both ends of the rotating cylinder, the top of the bracket is slidably connected to the rotating cylinder, a connecting rod is provided between the two brackets, and the connecting rod is arranged at the bottom of the transfer assembly.

[0007] Furthermore, the transfer assembly also includes a first motor and a transmission wheel, wherein the transmission wheel is arranged at one end of the rotating drum, the transmission wheel is transmission-connected to the first motor, the first motor is connected to one of the brackets, and the first motor drives the rotating drum to rotate.

[0008] Further, the propulsion mechanism includes a second motor, a first screw rod, a connecting sleeve and two fixing plates, the two fixing plates are respectively arranged at two ends of the first screw rod, the fixing plates are arranged at the ends of the cavity, and the fixing plates are configured to block the two ends of the cavity; The connecting sleeve is connected to the first screw rod by threads, a plurality of push plates are provided on the outside of the connecting sleeve, the plurality of push plates are connected to the plurality of slide grooves in a one-to-one correspondence, the second motor is connected to the first screw rod, and the second motor and the transmission wheel are arranged on the same side.

[0009] Furthermore, the conveying assembly includes a bottom supporting column, a fixed side plate, a transmission roller, and a third motor, wherein the fixed side plate is arranged on the upper part of the bottom supporting column, the fixed side plates are respectively arranged at both ends of the transmission roller, the third motor is fixedly connected to the bottom supporting column, and the transmission roller drives the plate to move; The transmission roller is provided with a plurality of transmission rollers and a plurality of driven rollers, the transmission rollers and the driven rollers are arranged at intervals, one of the transmission rollers is transmission-connected to the third motor, a plurality of the transmission rollers are connected by transmission belts, and the third motor drives the transmission rollers to rotate.

[0010] Furthermore, the detection device also includes two support assemblies and two lighting mechanisms. The two support assemblies are symmetrically arranged. The support assemblies are arranged on the upper part of the fixed side plate. The limiting mechanism, the lighting mechanism, the marking mechanism, and the optical detection mechanism are respectively connected to the support assemblies.

[0011] Further, the support assembly includes a support frame and a support mechanism, the support mechanism is provided with a first support column and two second support columns, the two second support columns are respectively arranged at both ends of the fixed side plate, the support mechanism and the first support column are arranged between the two second support columns, the lighting mechanism is fixedly connected to the side of the first support column, and the marking mechanism is arranged in the support frame; The support frame includes two third support columns and a crossbar, and the two third support columns are arranged at two ends of the crossbar.

[0012] Further, the marking mechanism includes a second screw rod, a marking head, a polished rod and a fourth motor, the two ends of the second screw rod are respectively connected to the cross bar and the fixed side plate, the fourth motor is transmission-connected to the second screw rod, and the fourth motor is fixed to the cross bar; The marking head is provided with a slider, which is slidably connected with the second screw rod and the polished rod, and the second screw rod drives the slider to move.

[0013] Further, the limiting mechanism includes two telescopic columns, a connecting shaft and a guide wheel, the two telescopic columns are respectively arranged at both ends of the connecting shaft, the guide wheel is axially connected to the connecting shaft, and the telescopic columns are fixedly connected to the support assembly; A flexible pad is provided on the surface of the guide wheel.

[0014] Furthermore, the second support column is provided with an interception mechanism, and the interception mechanism is used to guide the movement of the plate; The intercepting mechanism includes a blocking rod, an auxiliary rod and a connecting plate, the connecting plate is connected to one of the second support plates, one end of the blocking rod is fixedly connected to the connecting plate, the other end of the blocking rod is provided with a connecting block, one end of the auxiliary rod is fixedly connected to the connecting block, and the other end of the auxiliary rod is fixedly connected to the second support column.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The transfer assembly is used to move the plate from a horizontal state to a vertical state, and then the optical detection mechanism is used to detect the front and back sides of the plate, and the defective areas are marked by the marking mechanism to improve the efficiency of detection.

[0016] Multiple limit mechanisms are arranged on the left and right sides of the plate to be tested, which can accurately locate and limit the position of the plate, ensuring that the plate always maintains a stable vertical state in the detection device to ensure the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a device for detecting surface defects of a wood board according to an embodiment of the present invention; Figure 2 is a schematic diagram of a detection device according to an embodiment of the present invention; Figure 3 A schematic top view of a detection device according to an embodiment of the present invention; Figure 4 A schematic diagram of a conveying assembly according to an embodiment of the present invention; Figure 5 A schematic diagram of a limiting mechanism according to an embodiment of the present invention; Figure 6 It is a front view schematic diagram of a conveying assembly and a supporting assembly according to an embodiment of the present invention; Figure 7 A schematic diagram of a transfer assembly according to an embodiment of the present invention; Figure 8 It is a cross-sectional schematic diagram of a transfer assembly according to an embodiment of the present invention; Fig. 9 Schematic diagram of a propulsion mechanism according to an embodiment of the present invention.

[0018] In the figure: 1. Transfer assembly; 2. Plate; 3. Conveying assembly; 4. Limiting mechanism; 5. Support frame; 6. Marking mechanism; 7. Optical detection mechanism; 8. Illumination mechanism; 9. Support mechanism; 11. First motor; 12. Second motor; 13. Transmission wheel; 14. Carrying plate; 15. Rotating cylinder; 151. Cavity; 152. Bracket; 153. Connecting rod; 16. First screw rod; 17. Connecting sleeve; 18. Push plate; 19. Fixing Plate; 31, bottom support column; 32, fixed side plate; 33, transmission roller; 34, driven roller; 35, third motor; 41, telescopic column; 42, connecting shaft; 43, guide wheel; 51, cross bar; 52, third support column; 61, second screw rod; 62, marking head; 63, light rod; 64, fourth motor; 91, first support column; 92, second support column; 921, stop rod; 922, auxiliary rod; 923, connecting plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0021] like Figure 1 , Figure 2 and Figure 3As shown, in some embodiments, a device for detecting surface defects of a wood board includes a detection device. Transfer components 1 are respectively provided at both ends of the detection device. At the inlet, the transfer component 1 transports it to the detection device, and the detection mechanism performs defect detection on both sides of the wood board. After the detection is completed, the transfer component 1 at the outlet transports it out.

[0022] It should be noted that the detection device in this embodiment is provided with a conveying assembly 3, an optical detection mechanism 7, a marking mechanism 6 and a plurality of limit mechanisms 4. Among them, the optical detection mechanism 7, the marking mechanism 6 and the limit mechanism 4 are respectively arranged on the upper part of the conveying assembly 3, and the conveying assembly 3 provides support for it and is responsible for sending the plate 2 to be detected into the detection area. The optical detection mechanism 7 is arranged in front of the marking mechanism 6, and uses image acquisition technology to analyze and process the defects on the surface of the plate 2, and the marking mechanism 6 marks the defective part.

[0023] As a device for transferring the sheet material 2, two transfer assemblies 1 are provided, on which a rotating cylinder 15 and a plurality of supporting plates 14 are provided. These supporting plates 14 are all provided on the rotating cylinder 15 and are arranged in an array, and the sheet material 2 is driven to rotate by the driving action of the rotating cylinder 15. Specifically, the sheet material 2 is transported to the supporting plate 14 by an external conveyor belt, the rotating cylinder 15 is started, and the supporting plate 14 is driven to a vertical position, and the transfer assembly 1 moves the sheet material 2 to the detection device. After the detection is completed, the conveying assembly 3 transports the sheet material 2 to the transfer assembly 1 at the exit, and the transfer assembly 1 rotates it from a vertical state to a horizontal state, and it is output by the external conveyor belt.

[0024] Specifically, when the plate 2 moves into the detection device, the conveying assembly 3 contacts the bottom of the plate 2, and the conveying assembly 3 drives the plate 2 to move forward. During the movement, the limit assembly fixes the position of the plate 2 in the middle position of the detection device. In the detection device, an illumination mechanism 8 is provided, which is distributed on the two sides of the plate 2. The two surfaces of the plate 2 are illuminated by multiple light sources in the illumination mechanism 8, and the optical detection mechanism 7 collects images of the surface of the plate 2, and analyzes and processes the image information. According to the processing results, the marking mechanism 6 marks the defect.

[0025] In particular, the sheet 2 is moved to a vertical state by the transfer assembly 1, and the two surfaces of the sheet 2 are inspected respectively. The marking mechanism 6 is arranged at the rear side of the optical detection mechanism 7 so as to mark the position of the surface defect of the plate 2. After the plate 2 is detected, it is transported out of the detection device by the conveying assembly 3 and transported out by the transfer assembly 1 at the exit.

[0026] A plurality of limiting mechanisms 4 are respectively provided on the left and right sides of the plate 2 to be detected, so as to locate and limit the position of the plate 2 and ensure that the plate 2 is in a vertical position in the detection device.

[0027] In particular, the transfer assembly 1 is used to move the plate 2 from a horizontal state to a vertical state, and then the optical detection mechanism 7 detects the front and back sides of the plate 2, and the marking mechanism 6 marks the defective parts to improve the detection efficiency.

[0028] In addition, multiple limiting mechanisms 4 are respectively arranged on the left and right sides of the plate 2 to be tested. They accurately locate and limit the position of the plate 2 to ensure that the plate 2 always maintains a stable vertical state in the testing device to ensure the accuracy of the test results.

[0029] like Figure 7 , Figure 8 and Fig. 9 As shown, in some embodiments, a cavity 151 is provided inside the rotating cylinder 15, and the propulsion mechanism is arranged in the cavity 151. A plurality of slide grooves are provided on the cylinder wall of the rotating cylinder 15, each of which is arranged between two bearing plates 14, and the propulsion mechanism drives the plate 2 to move through the slide grooves.

[0030] In order to fix the entire transfer assembly 1, brackets 152 are respectively provided at both ends of the rotating cylinder 15. The top of the bracket 152 is slidably connected to the rotating cylinder 15. A connecting rod 153 is provided between the two brackets 152. The connecting rod 153 is provided at the bottom of the transfer assembly 1 and is used to fix the two brackets 152 to provide better support.

[0031] Furthermore, in some embodiments, the transfer assembly 1, as a key component for conveying the plate 2, further includes a first motor 11 and a transmission wheel 13. The transmission wheel 13 is fixedly connected to one end of the rotating drum 15 and is in transmission connection with the first motor 11. The first motor 11 drives the rotating drum 15 to rotate, and drives the carrier plate 14 to rotate the plate 2 while the rotating drum 15 rotates. The first motor 11 is fixed to one of the brackets 152 so that the first motor 11 can output power stably.

[0032] It is worth mentioning that the first motor 11 drives the rotating drum 15 to rotate, turning the plate 2 from a horizontal state to a vertical state, and the propulsion mechanism moves the plate 2 from the transfer assembly 1 to the detection device to complete the conveying operation of the plate 2.

[0033] Furthermore, in some embodiments, the propulsion mechanism includes a second motor 12, a first screw rod 16, a connecting sleeve 17 and two fixing plates 19. Specifically, the two fixing plates 19 are respectively arranged at both ends of the first screw rod 16 to support the first screw rod 16, and the fixing plates 19 are installed at the ends of the cavity 151, and the fixing plates 19 block both ends of the cavity 151 to ensure the stability of the rotating cylinder 15.

[0034] In order to realize the pushing effect on the plate 2, a connecting sleeve 17 is provided on the outer side of the first screw rod 16, and the connecting sleeve 17 is connected to the first screw rod 16 through a threaded connection, and a plurality of push plates 18 are provided on the outer side of the connecting sleeve 17, and these push plates 18 are welded and fixed to the outer side of the connecting sleeve 17, and the push plates 18 extend out of the rotating cylinder 15 through the slide groove, and the second motor 12 is connected to one end of the first screw rod 16, and the second motor 12 is used to drive the first screw rod 16 to rotate. Under the drive of the first screw rod 16, the connecting sleeve 17 and the push plates 18 drive the plate 2 to move forward along the slide groove.

[0035] Particularly, the second motor 12 is arranged on the same side as the transmission wheel 13, while the transmission wheel 13 is arranged on the side away from the detection device.

[0036] like Figure 3 , Figure 4 and Figure 6 As shown, in some embodiments, the conveying assembly 3 includes a bottom supporting column 31, a fixed side plate 32, a transmission roller, and a third motor 35. The bottom supporting column 31 serves as a supporting structure of the entire conveying system, two fixed side plates 32 are installed on the top of the bottom supporting column 31, and the transmission roller is installed between the two fixed side plates 32.

[0037] In particular, the transmission roller, as a component for driving the plate 2 to move, is provided with a plurality of transmission rollers 33 and a plurality of driven rollers 34, and the transmission rollers 33 and the driven rollers 34 are arranged at intervals. This layout not only optimizes the transmission efficiency, but also ensures the stability of the plate 2 during the transportation process. The transmission roller 33 is directly connected to the third motor 35, and the entire transmission roller is driven by the third motor 35. It is worth mentioning that these transmission rollers 33 are closely connected through the transmission belt, forming an efficient and stable transmission system.

[0038] The third motor 35 , as the power source of the entire conveying assembly 3 , is disposed below the fixed side plate 32 and fixedly connected to the bottom support column 31 to ensure that the third motor 35 can output power stably.

[0039] like Figure 2 , Figure 3 and Figure 6As shown, in some embodiments, the detection device also includes two support assemblies and two lighting mechanisms 8. The two support assemblies are symmetrically arranged and installed on the upper part of the fixed side plate 32 to provide a support structure for the limiting mechanism 4, the lighting mechanism 8, the marking mechanism 6, and the optical detection mechanism 7 to ensure the stability of these components and construct a stable and compact detection device.

[0040] Furthermore, in some embodiments, the support assembly is provided with a support frame 5 and a support mechanism 9 to provide a better support effect. Among them, a first support column 91 and two second support columns 92 are provided in the support mechanism 9, and the two second support columns 92 are respectively provided at both ends of each fixed side plate 32, and two limiting mechanisms 4 are provided on the inner side of each second support column 92, and the two limiting mechanisms 4 are respectively installed at the upper part and the lower part of the second support column 92, and the purpose of such design is to better limit the position of the plate 2.

[0041] In particular, the support frame 5 and the first support column 91 are sequentially arranged between the two second support columns 92. The lighting mechanism 8 is installed on the side of the first support column 91 to provide support force for the lighting mechanism 8. Similarly, two limiting mechanisms 4 are also arranged on the inner side of the first support column 91, and the two limiting mechanisms 4 are at the same position as the limiting mechanisms 4 on the second support column 92.

[0042] It is worth noting that the marking mechanism 6 is installed in the support frame 5. Specifically, the support frame 5 includes two third support columns 52 and a crossbar 51. The two third support columns 52 are respectively installed at both ends of the crossbar 51 to fix the crossbar 51 and provide stable support for the marking mechanism 6.

[0043] Further, in some embodiments, the marking mechanism 6 includes a second screw rod 61, a marking head 62, a light rod 63 and a fourth motor 64, and these components work together to complete the marking operation of the defect position. Among them, the second screw rod 61 and the light rod 63 are both arranged between the cross bar 51 and the fixed side plate 32 to form a stable support mechanism 9. The two ends of the second screw rod 61 are respectively connected to the cross bar 51 and the fixed side plate 32 by bearings, so that the second screw rod 61 can rotate smoothly. In order to drive the second screw rod 61 to rotate, a fourth motor 64 is arranged on the upper part of the cross bar 51, and the fourth motor 64 is connected to the second screw rod 61 to ensure the continuity and stability of power transmission.

[0044] A slider is provided in the marking head 62, and the slider can be slidably connected with the second screw rod 61 and the light rod 63. When the second screw rod 61 rotates under the drive of the fourth motor 64, the slider moves up and down along the direction of the second screw rod 61, and the light rod 63 plays a guiding and supporting role to ensure that the slider maintains linearity and stability during the movement.

[0045] In actual operation, when the surface defect detection device of the plate 2 detects a defect, the marking mechanism 6 is immediately triggered to operate. The fourth motor 64 is started to drive the second screw 61 to rotate, thereby driving the slider and the marking head 62 to move along the defect position. The marking head 62 will leave a clear mark on the surface of the plate 2 during the movement, clearly indicating the specific location and range of the defect.

[0046] like Figure 5 As shown, in some embodiments, the limiting mechanism 4 is an important component for limiting the position of the plate 2, and the limiting mechanism 4 includes two telescopic columns 41, a connecting shaft 42, and a guide wheel 43. Specifically, the bottom of the telescopic column 41 is fixedly connected to the support assembly, and the output end of the telescopic column 41 is fixedly connected to the connecting shaft 42, and the guide wheel 43 is installed in the middle of the connecting shaft 42, and the two are closely connected through a bearing to ensure that the guide wheel 43 can rotate freely.

[0047] In order to prevent the guide wheel 43 from damaging the surface of the plate 2, a layer of soft flexible pad is also covered on the surface of the guide wheel 43. This layer of flexible pad can not only effectively protect the surface of the plate 2 from scratches, but also form a buffer layer between the plate 2 and the guide wheel 43, further improving the stability and smoothness of the movement of the plate 2.

[0048] Specifically, according to the actual thickness of the plate 2, the length of the telescopic column 41 needs to be adjusted to ensure that the distance between the two symmetrically installed guide wheels 43 reaches the optimal state, so that the plate 2 to be tested can be in a vertical state. The surface of the guide wheel 43 contacts the surface of the plate 2. When the plate 2 moves forward, due to the friction between the plate 2 and the guide wheel 43, the guide wheel 43 rotates, so that the plate 2 can move forward smoothly.

[0049] like Figure 3 , Figure 4 and Figure 6 As shown, at the entrance, at the upper part of the transfer component 1, an interception mechanism is provided, and this interception mechanism is fixedly connected to the second support column 92. Its function is to guide the plate 2 into the detection device, while also preventing the plate 2 from falling off the transfer component 1.

[0050] At the exit, an interception mechanism is also provided, and this interception mechanism is also fixedly connected to the second support column, but the difference between the two is that the interception mechanism at the exit guides the plate 2 to move out of the detection device, so that the plate 2 can be more accurately transported to the external conveyor belt by the transfer component 1.

[0051] Specifically, the interception mechanism includes a blocking rod 921, an auxiliary rod 922 and a connecting plate 923. The connecting plate 923 is arranged on the second support column 92 away from the external conveyor belt, and the connecting plate 923 is arranged at a position slightly above the second support column 92. The connecting plate 923 is welded and fixed to one end of the blocking rod 921, and a connecting block is arranged at the other end of the blocking rod 921. The two ends of the auxiliary rod 922 are fixedly connected to the connecting block and the second support column 92, respectively. This design not only enhances the stability of the blocking rod 921, but also ensures the firmness and reliability of the overall structure of the interception mechanism.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0054] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A device for detecting surface defects of a wood board, characterized in that: The detection device comprises a detection device, wherein both ends of the detection device are provided with a transfer component (1), and the detection device comprises a conveying component (3), an optical detection mechanism (7), a marking mechanism (6) and a plurality of limit mechanisms (4). The optical detection mechanism (7), the marking mechanism (6) and the limiting mechanism (4) are respectively arranged on the conveying component (3); The conveying assembly (3) is configured to convey the plate (2) to be inspected, and the plurality of limit mechanisms (4) are respectively arranged on two opposite sides of the plate (2) to be inspected; The marking mechanism (6) is arranged on the rear side of the optical detection mechanism (7) and is used to mark the position of the defect on the surface of the plate (2); The transfer assembly (1) comprises a rotating drum (15) and a plurality of bearing plates (14); the bearing plates (14) are arranged on the rotating drum (15); the plurality of bearing plates (14) are arranged in an array; the rotating drum (15) drives the bearing plates (14) to rotate the plate (2), so as to move the plate (2) from a horizontal state to a vertical state.

2. The wooden board surface defect detection device according to claim 1, characterized in that: The rotating cylinder (15) comprises a cavity (151) and a plurality of slide grooves, wherein the slide grooves are arranged on the rotating cylinder (15), and a propulsion mechanism is arranged in the cavity (151), wherein the propulsion mechanism is connected to the slide grooves, and wherein the propulsion mechanism is configured to drive the plate (2) on the carrying plate (14) to move; Brackets (152) are respectively provided at both ends of the rotating cylinder (15); the top of the bracket (152) is slidably connected to the rotating cylinder (15); a connecting rod (153) is provided between the two brackets (152); and the connecting rod (153) is provided at the bottom of the transfer assembly (1).

3. The wooden board surface defect detection device according to claim 1, characterized in that: The transfer assembly (1) further comprises a first motor (11) and a transmission wheel (13); the transmission wheel (13) is arranged at one end of the rotating drum (15); the transmission wheel (13) is in transmission connection with the first motor (11); the first motor (11) is connected to one of the brackets (152); and the first motor (11) drives the rotating drum (15) to rotate.

4. The wooden board surface defect detection device according to claim 2, characterized in that: The propulsion mechanism comprises a second motor (12), a first screw rod (16), a connecting sleeve (17) and two fixing plates (19), the two fixing plates (19) being respectively arranged at two ends of the first screw rod (16), the fixing plates (19) being arranged at the ends of the cavity (151), and the fixing plates (19) being configured to block the two ends of the cavity (151); The connecting sleeve (17) is connected to the first screw rod (16) by means of a thread, a plurality of push plates (18) are provided on the outside of the connecting sleeve (17), the plurality of push plates (18) are connected to the plurality of slide grooves in a one-to-one correspondence, the second motor (12) is connected to the first screw rod (16), and the second motor (12) and the transmission wheel (13) are arranged on the same side.

5. The device for detecting surface defects of wooden boards according to claim 1, characterized in that: The conveying assembly (3) comprises a bottom supporting column (31), a fixed side plate (32), a transmission roller, and a third motor (35), wherein the fixed side plate (32) is arranged on the upper part of the bottom supporting column (31), the fixed side plates (32) are respectively arranged at both ends of the transmission roller, the third motor (35) is fixedly connected to the bottom supporting column (31), and the transmission roller drives the plate (2) to move; The transmission roller is provided with a plurality of transmission rollers (33) and a plurality of driven rollers (34), the transmission rollers (33) and the driven rollers (34) being arranged at intervals, one of the transmission rollers (33) being transmission-connected to the third motor (35), the plurality of transmission rollers (33) being connected via a transmission belt, and the third motor (35) driving the transmission rollers (33) to rotate.

6. The device for detecting surface defects of wooden boards according to claim 1, characterized in that: The detection device further comprises two support assemblies and two lighting mechanisms (8), the two support assemblies being symmetrically arranged, the support assemblies being arranged on the upper part of the fixed side plate (32), and the limiting mechanism (4), the lighting mechanism (8), the marking mechanism (6), and the optical detection mechanism (7) being respectively connected to the support assemblies.

7. The device for detecting surface defects of wooden boards according to claim 6, characterized in that: The support assembly comprises a support frame (5) and a support mechanism (9), the support mechanism (9) being provided with a first support column (91) and two second support columns (92), the two second support columns (92) being respectively arranged at two ends of the fixed side plate (32), the support mechanism (9) and the first support column (91) being arranged between the two second support columns (92), the lighting mechanism (8) being fixedly connected to the side of the first support column (91), and the marking mechanism (6) being arranged in the support frame (5); The support frame (5) comprises two third support columns (52) and a crossbar (51), wherein the two third support columns (52) are arranged at both ends of the crossbar (51).

8. The device for detecting surface defects of wooden boards according to claim 7, characterized in that: The marking mechanism (6) comprises a second screw rod (61), a marking head (62), a polished rod (63) and a fourth motor (64); two ends of the second screw rod (61) are respectively connected to the cross bar (51) and the fixed side plate (32); the fourth motor (64) is transmission-connected to the second screw rod (61); and the fourth motor (64) is fixedly connected to the cross bar (51); The marking head (62) is provided with a slider, the slider is slidably connected to the second screw rod (61) and the light rod (63), and the second screw rod (61) drives the slider to move.

9. The device for detecting surface defects of wooden boards according to claim 1, characterized in that: The limiting mechanism (4) comprises two telescopic columns (41), a connecting shaft (42) and a guide wheel (43); the two telescopic columns (41) are respectively arranged at two ends of the connecting shaft (42); the guide wheel (43) is axially connected to the connecting shaft (42); and the telescopic columns (41) are fixedly connected to the support assembly; A flexible pad is provided on the surface of the guide wheel (43).

10. The device for detecting surface defects of wooden boards according to claim 6, characterized in that: The second support column (92) is provided with an interception mechanism, and the interception mechanism is used to guide the movement of the plate (2); The intercepting mechanism comprises a blocking rod (921), an auxiliary rod (922) and a connecting plate (923); the connecting plate (923) is connected to one of the second supporting plates (92); one end of the blocking rod (921) is fixedly connected to the connecting plate (923); the other end of the blocking rod (921) is provided with a connecting block; one end of the auxiliary rod (922) is fixedly connected to the connecting block; and the other end of the auxiliary rod (922) is fixedly connected to the second supporting column (92).

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