Surface defect detection device and method based on waterproof medium-density fiberboard production

Abstract

The invention relates to the technical field of plate defect detection, and particularly discloses a surface defect detection device and method based on waterproof medium-density fiberboard production, the surface defect detection device comprises a defect detection box, the defect detection box is internally provided with a visual sensor, and the visual sensor is used for identifying and detecting surface defects of a fiberboard to be detected; the device further comprises a plate feeding port and a plate discharging port, and the plate feeding port and the plate discharging port are formed in the side face of the defect detection box. The first camera is mounted above the defect detection box, the recognition direction of the first camera is downward, and the first camera is used for recognizing an object below the first camera; and the number of the second cameras is two, the two second cameras are installed at the front end and the rear end of the defect detection box respectively, the recognition directions of the two second cameras are horizontal, and the second cameras are used for recognizing objects in the transverse range of the second cameras.

Description

Technical Field

[0001] The present invention relates to the technical field of board defect detection, and in particular to a surface defect detection device and method based on the production of waterproof medium-density fiberboard. Background Art

[0002] The waterproof MDF surface defect detection device is a device specifically designed to detect surface defects on MDF. It uses advanced image processing and machine learning technology to automatically identify and classify various defects on the fiberboard surface, such as cracks, scratches, stains, uneven roughness, etc. This device plays a vital role in the production process of waterproof MDF, helping to ensure the consistency and stability of product quality; When inspecting each side of a plate, the prior art needs to transport the plate to the bottom of a detection station through a conveying device, and then use a detection component to perform image recognition on the surface of the plate. For example, the prior art publication number CN115201219A discloses a plate defect detection system, which uses a transmission device in conjunction with a detection device to perform camera photography and recognition on different products to achieve plate defect detection and store data at the same time. After the detection is completed, the defect range is marked by the result of the plate defect detection by a marking displacement module, and finally the detection of processing defects on metal or plastic plates is achieved. However, there is a problem that when inspecting the other side of the plate, the plate needs to be taken out, and then put into the detection equipment after changing the side for inspection, so that the detection speed reduces the detection efficiency. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] The present invention provides a surface defect detection device and method based on the production of waterproof medium-density fiberboard, which can solve the problem that the detection equipment in the prior art is inconvenient to adjust various angles of the board. The specific scheme is as follows: On the one hand, the present invention provides a surface defect detection device based on the production of waterproof medium density fiberboard, including a defect detection box, the interior of the defect detection box has a visual sensor, the visual sensor is used to identify and detect the surface defects of the fiberboard to be detected, and also includes: A sheet material feed port and a sheet material discharge port, wherein the sheet material feed port and the sheet material discharge port are arranged on the side of the defect detection box; A first camera, wherein the first camera is installed above the defect detection box, the recognition direction of the first camera faces downward, and the first camera is used to recognize objects below it; The second camera has two second cameras, the two second cameras are respectively installed at the front and rear ends of the defect detection box, the recognition direction of the two second cameras is horizontal, and the second camera is used to identify objects within its lateral range; A reversing assembly is used to fix the fiberboard to be inspected and rotate the fiberboard to be inspected inside the defect detection box so that the upper, lower, left and right four surfaces of the fiberboard to be inspected can be aligned with the bottom of the first camera in turn.

[0005] Preferably, the reversing assembly comprises: A plate, wherein the plate has two members, the two members are arranged in parallel, the two members are arranged on the left and right sides of the fiberboard to be detected, and the two members are arranged on the upper and lower ends of the fiberboard to be detected; A first rotating shaft, wherein the first rotating shaft has two parts, and the two first rotating shafts are respectively fixedly connected to adjacent ends of the two plates, and the two plates rotate with the central axis of the first rotating shaft as the rotating axis; The fixed disk has two fixed disks, which are respectively arranged at the front and rear ends of the plate, and the front and rear ends of the first rotating shaft are respectively rotatably connected to the two fixed disks.

[0006] Preferably, it also includes: A first gear, wherein the first gear has two first gears, and the two first gears are respectively fixedly connected to the same end of the two first rotating shafts; The second gear is arranged between the two first gears, and the second gear is respectively engaged with the two first gears. When the second gear rotates, it can drive the two first gears to rotate. The second gear is rotatably installed in the middle of the fixed disk at the front end of the plate, and the fixed shaft of the second gear is rotatably connected to the front end of the defect detection box, and the fixed disk at the rear end of the plate is rotatably connected to the rear end of the defect detection box.

[0007] Preferably, it also includes: The first motor is fixedly mounted on the front end outer wall of the defect detection box, the output shaft of the first motor is connected to the fixed shaft of the second gear, and the first motor can drive the second gear to rotate.

[0008] Preferably, a second motor is installed in the middle of the fixed disk at the rear end of the plate, and the output shaft of the second motor is fixedly connected to the rear end of the fixed disk. The rotation of the second motor can drive the fixed disk to rotate as a whole, and then the two plates on the fixed disk can rotate synchronously.

[0009] Preferably, each of the plates is provided with a driving assembly, and the driving assembly comprises: There are two driving rollers, and the two driving rollers are respectively arranged at two ends of the plate; A receiving groove is provided at both ends of the plate, and the driving roller rotates in the receiving groove; The second rotating shaft is fixedly connected to the middle part of the driving roller. Rotating holes are opened at both ends of the accommodating groove. Both ends of the second rotating shaft are rotatably connected to the inside of the rotating holes.

[0010] Preferably, the driving assembly further comprises: A motor slot is provided at one end of the plate, one end of the rotating hole penetrates into the motor slot, a third motor is fixedly installed in the motor slot, an output shaft of the third motor is connected to one end of one of the driving rollers, and the third motor can drive the driving roller to rotate; A sprocket is connected to both ends of the two driving rollers, and the two sprockets at adjacent ends are connected by chain transmission. A chain groove is opened in the middle of the plate, and the chain groove penetrates into the receiving grooves at both ends of the plate.

[0011] Preferably, a limit assembly is further provided at one end of the plate, and the limit assembly comprises: A sliding plate, the sliding plate is arranged at one end of the plate, a sliding groove is provided on a side of the plate close to the sliding plate, the sliding plate is slidably connected to the sliding groove, a limiting groove is provided on the inner wall of the sliding groove, a limiting block is connected to one end of the sliding plate close to the limiting groove, and the limiting block is slidably connected to the limiting groove; A stopper, installed below the sliding plate; An electric telescopic rod, the bottom of which is fixedly connected to the top of the stopper; A rack, the rack is fixedly connected to the bottom of the sliding plate, a third gear is also arranged below the rack, and the third gear is meshed with the rack; A fourth motor is fixedly mounted on the outer wall of the plate, and an output shaft of the fourth motor is fixedly connected to the third gear; A rotation groove is opened on the outer wall of the plate, the third gear is rotatably installed inside the rotation groove, a baffle is connected to the outside of the rotation groove, and the output shaft of the fourth motor passes through the baffle and is connected to the third gear.

[0012] Preferably, a negative pressure sleeve is provided on one side of the two panels close to the fiberboard to be tested, and the end of the negative pressure sleeve is in contact with the surface of the fiberboard to be tested, so as to form a sealed space between the inner wall of the negative pressure sleeve and the outer wall of the fiberboard to be tested, and the negative pressure sleeve is supported by rubber material, and the negative pressure sleeve is elastic, and an exhaust hole is opened inside the negative pressure sleeve, and the exhaust hole is connected with the end of the panel away from the fiberboard to be tested, and an exhaust pump is fixedly installed on the end of the panel away from the fiberboard to be tested, and one end of the exhaust pump is connected to an exhaust pipe, and the other end of the exhaust pipe is connected to the exhaust hole.

[0013] In another aspect, the present invention provides a method for detecting surface defects in production of waterproof medium density fiberboard, comprising the following steps: S1, inserting the fiberboard to be inspected into the defect inspection box from the board feed port, and the reversing component transports the fiberboard to be inspected to the bottom of the first camera; S2, the first camera detects the top surface of the fiberboard to be inspected; S3, the reversing assembly drives the fiberboard to be inspected to rotate so that the upper, lower, left and right four surfaces of the fiberboard to be inspected are respectively aligned with the bottom of the first camera; S4. The reversing assembly drives the fiberboard to be inspected to tilt so that the tilt angle of the fiberboard to be inspected matches the tilt angle of the board discharge port. Under the action of gravity, the fiberboard to be inspected slides out of the defect detection box from the board discharge port to complete the detection.

[0014] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: 1. By setting the plate feed port and the plate discharge port, it is convenient to feed and discharge the fiberboard to be inspected, and after the fiberboard to be inspected enters from the plate feed port, the fiberboard to be inspected can be transported to the middle position of the defect detection box through the reversing component, and then the defect is detected by the visual sensor. After the detection is completed, the inclination angle of the fiberboard to be inspected can be adjusted by the reversing component, so that the fiberboard to be inspected can slide out of the defect detection box along the inclination angle of the plate discharge port.

[0015] 2. Through the reversing component inside the defect detection box, the upper, lower, left and right four surfaces of the fiberboard to be detected can be aligned with the bottom of the first camera respectively, so that the upper, lower, left and right four surfaces of the fiberboard to be detected can be detected separately, so as to achieve the purpose of efficient detection, and then the fiberboard to be detected is discharged from the board discharge port through the reversing component. During the discharge process, the front and back surfaces of the fiberboard to be detected are detected for defects through the second camera, so that the fiberboard to be detected is detected at one time, and it does not need to be taken out for changing the surface in the middle. The detection efficiency is significantly improved compared with the existing technology.

[0016] 3. The fiberboard to be inspected is moved on the board by the driving assembly, so that the first camera can detect the obstructed position of the fiberboard to be inspected, avoid detecting blind spots, and perform all-round inspection of the fiberboard to be inspected.

[0017] 4. The stopper is driven to move by the electric telescopic rod, so that when the two panels are in a vertical state, the bottom of the fiberboard to be detected can be dragged by the stopper, thereby preventing the fiberboard to be detected from falling and fixing the fiberboard to be detected on the reversing assembly.

[0018] Other features and advantages of the present invention will be described in the following description, and part of them will become obvious from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 It is an overall stereogram of the present invention; Figure 2 This is a schematic diagram of the feeding state of the fiberboard to be tested according to the present invention; Figure 3 This is a schematic diagram of the vertical state of the fiberboard to be tested according to the present invention; Figure 4 This is a schematic diagram of the discharging state of the fiberboard to be tested according to the present invention; Figure 5 A three-dimensional diagram of the reversing assembly and the visual sensor of the present invention; Figure 6 An exploded view of the reversing assembly of the present invention; Figure 7 An exploded view of the plate and the driving roller of the present invention; Figure 8 is a structural diagram of the driving roller of the present invention; Fig. 9 This is a state diagram of the sliding plate of the present invention when it is extended; Fig.10 It is a state diagram of the sliding plate of the present invention when it is contracted; Fig.11 It is a partial structural diagram of the sliding plate of the present invention; Fig.12 An exploded view of the plate and the sliding plate of the present invention; Fig.13 It is a schematic structural diagram of the negative pressure sleeve of the present invention.

[0020] The reference numerals are as follows: 101. Defect detection box; 102. Plate material inlet; 103. Plate material outlet; 104. First camera; 105. Second camera; 200. Fiberboard to be tested; 300, reversing assembly; 301, plate; 3011, receiving slot; 3012, chain slot; 3013, motor slot; 3014, rotating hole; 302, the first rotating shaft; 303, the first gear; 304, the fixed plate; 305, the second gear; 306, the first motor; 307, the driving roller; 308, the second rotating shaft; 309, the third motor; 310, the sprocket; 312, the chain; 313, the sliding plate; 314, the sliding groove; 315, the limit block; 316, the limit groove; 317, the block; 318, the electric telescopic rod; 319, the rack; 320, the third gear; 321, the fourth motor; 322, the rotating groove; 323, the baffle; 324, the negative pressure sleeve; 325, the exhaust hole; 326, the vacuum pump; 327, the vacuum pipe; 328, the second motor. DETAILED DESCRIPTION

[0021] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used to explain the principles of the present invention together with the embodiments of the present invention.

[0022] Embodiment 1: Figure 1 As shown, this embodiment discloses a surface defect detection device based on the production of waterproof medium density fiberboard, which can detect defects on the fiberboard 200 to be detected. The specific detection means is realized by a visual sensor, specifically including: The defect detection box 101 has a plurality of support legs at the bottom thereof, and the support legs are used to stably place the defect detection box 101 on the ground; The sheet material feed port 102 and the sheet material discharge port 103 are arranged on the side of the defect detection box 101. The sheet material feed port 102 is arranged horizontally, and the sheet material discharge port 103 is arranged obliquely. By setting the sheet material discharge port 103 obliquely, the fiberboard 200 to be detected can slide out naturally by gravity when being discharged, thereby achieving the effect of smooth discharge, without the need for a machine to pull it out; A first camera 104, which is installed above the defect detection box 101, with the recognition direction of the first camera 104 facing downward, and is used to recognize objects below it; The second camera 105 has two second cameras 105 , which are respectively installed at the front and rear ends of the defect detection box 101 . The recognition direction of the two second cameras 105 is horizontal, and the second camera 105 is used to recognize objects within its lateral range.

[0023] like Figure 2 , Figure 3 , Figure 4 As shown, the defect detection box 101 is provided with a reversing assembly 300, which is used to fix the fiberboard 200 to be detected and rotate the fiberboard 200 to be detected inside the defect detection box 101, so that the fiberboard 200 to be detected can be rotated up and down (left and right) Figure 2 , Figure 3 , Figure 4 The direction shown is a front view) the four surfaces can be aligned with the bottom of the first camera 104 in sequence; like Figure 5 , Figure 6 As shown, the switching assembly 300 includes: The plate member 301 has two plates 301, the two plates 301 are arranged in parallel, the two plates 301 are arranged on the left and right sides of the fiberboard 200 to be detected, and the two plates 301 are arranged on the upper and lower ends of the fiberboard 200 to be detected; The first rotating shaft 302 has two first rotating shafts 302, and the two first rotating shafts 302 are respectively fixedly connected to adjacent ends of the two plates 301, and the two plates 301 rotate around the central axis of the first rotating shaft 302 as the rotation axis; A first gear 303, wherein the first gear 303 has two first gears 303, and the two first gears 303 are respectively fixedly connected to the same end of the two first rotating shafts 302; The fixed disk 304 has two fixed disks 304, which are respectively arranged at the front and rear ends of the plate 301, and the front and rear ends of the first rotating shaft 302 are respectively rotatably connected to the two fixed disks 304; The second gear 305 is arranged between the two first gears 303. The second gear 305 is meshed with the two first gears 303 respectively. When the second gear 305 rotates, it can drive the two first gears 303 to rotate. The second gear 305 is rotatably mounted on the middle part of the fixed disk 304 at the front end of the plate 301. The fixed shaft of the second gear 305 is rotatably connected to the front end of the defect detection box 101, and the fixed disk 304 at the rear end of the plate 301 is rotatably connected to the rear end of the defect detection box 101. A first motor 306, the first motor 306 is fixedly mounted on the front outer wall of the defect detection box 101, the output shaft of the first motor 306 is connected to the fixed shaft of the second gear 305, and the first motor 306 can drive the second gear 305 to rotate; In the above scheme, the second gear 305 is driven to rotate by the first motor 306, and then the second gear 305 drives the two first gears 303 to rotate. When the two first gears 303 rotate, the two first shafts 302 and the two plates 301 also rotate accordingly. Since the two first gears 303 are meshed through the second gear 305, the two first gears 303 rotate in the same direction, and therefore the two plates 301 rotate in the same direction, so that the two plates 301 always keep parallel to each other during the rotation process. Therefore, during the rotation process of the two plates 301, the following can be generated: Figure 2 , Figure 3 , Figure 4 The three states shown are Figure 2 is the state of the fiberboard 200 to be tested when it is fed. Figure 3 The fiberboard 200 to be inspected is in a vertical state. In the vertical state, the first camera 104 can inspect the left and right sections of the fiberboard 200 to be inspected. Figure 4 This is the discharging state of the fiberboard 200 to be tested. In the discharging state, the two panels 301 make the fiberboard 200 to be tested in a tilted state, and the tilt angle matches the tilt angle of the board discharge port 103, so that the fiberboard 200 to be tested that has completed the test can quickly slide out along the tilted board discharge port 103.

[0024] As a possible embodiment, Figure 5 As shown, a second motor 328 is installed in the middle of the fixed disk 304 at the rear end of the plate 301, and the output shaft of the second motor 328 is fixedly connected to the rear end of the fixed disk 304. The rotation of the second motor 328 can drive the fixed disk 304 to rotate as a whole, and then the two plates 301 on the fixed disk 304 rotate synchronously, thereby realizing the Figure 2 , Figure 3 , Figure 4 The effect of switching between the three states shown; It should be noted that when the fixed disk 304 is controlled by the second motor 328, the self-locking function of the first motor 306 is turned off, and its output shaft can rotate freely, so that when the two first gears 303 rotate synchronously with the fixed disk 304, the second gear 305 also rotates synchronously with the first gear 303.

[0025] like Figure 7 , Figure 8 As shown, the two plates 301 are each provided with a driving assembly, and the driving assembly includes: There are two driving rollers 307, which are respectively arranged at the two ends of the plate 301. The two ends of the plate 301 are provided with receiving grooves 3011. The driving rollers 307 rotate in the receiving grooves 3011. The middle part of the driving roller 307 is fixedly connected to the second rotating shaft 308. The two ends of the receiving groove 3011 are provided with rotating holes 3014. The two ends of the second rotating shaft 308 are rotatably connected to the inside of the rotating holes 3014. The motor slot 3013 is provided at one end of the plate 301, and one end of the rotating hole 3014 penetrates into the motor slot 3013. A third motor 309 is fixedly installed in the motor slot 3013. The output shaft of the third motor 309 is connected to one end of one of the driving rollers 307, and the third motor 309 can drive the driving roller 307 to rotate. Sprocket 310, sprocket 310 is connected to both ends of two driving rollers 307, two sprockets 310 at adjacent ends are connected by a chain 312, a chain groove 3012 is provided in the middle of the plate 301, and the chain groove 3012 penetrates into the receiving grooves 3011 at both ends of the plate 301; In the above scheme, one of the driving rollers 307 is driven to rotate by the third motor 309, and then the two driving rollers 307 are driven by the sprocket 310 and the chain 312, so that the two driving rollers 307 at both ends of the plate 301 can rotate synchronously, so that the fiberboard 200 to be detected on its surface is driven to move on the plate 301 through the synchronous rotation of the two driving rollers 307, and the driving components on the two plates 301 at both ends of the fiberboard 200 to be detected cooperate, so that the fiberboard 200 to be detected can move on the plate 301. After the fiberboard 200 to be inspected enters the defect detection box 101, the driving component can automatically move the fiberboard 200 to the bottom of the first camera 104, and after the detection is completed, the driving component can move the fiberboard 200 to the exit of the board discharge port 103 to complete the rapid discharge, and when discharging, the front and rear end faces of the fiberboard 200 to be inspected are inspected by the two second cameras 105 at the front and rear ends of the defect detection box 101, thereby completing the all-round detection of the six sides of the fiberboard 200 to be inspected.

[0026] like Fig. 9 , Fig.10 As shown, a limit assembly is also provided at one end of the plate 301, and the limit assembly includes: A sliding plate 313 is provided at one end of the plate 301. A sliding groove 314 is provided on one side of the plate 301 close to the sliding plate 313. The sliding plate 313 is slidably connected to the sliding groove 314. A limiting groove 316 is provided on the inner wall of the sliding groove 314. One end of the sliding plate 313 close to the limiting groove 316 is connected to a limiting block 315. The limiting block 315 is slidably connected to the limiting groove 316. A stopper 317 is installed below the sliding plate 313; The electric telescopic rod 318, the bottom of which is fixedly connected to the top of the stopper 317 like Fig.11 , Fig.12 As shown, it also includes: A rack 319, the rack 319 is fixedly connected to the bottom of the sliding plate 313, and a third gear 320 is also provided below the rack 319, and the third gear 320 is meshed with the rack 319; A fourth motor 321 is fixedly mounted on the outer wall of the plate 301 , and an output shaft of the fourth motor 321 is fixedly connected to the third gear 320 ; The rotating groove 322 is provided on the outer wall of the plate 301. The third gear 320 is rotatably mounted inside the rotating groove 322. The outer part of the rotating groove 322 is connected with a baffle 323. The output shaft of the fourth motor 321 passes through the baffle 323 and is connected to the third gear 320. In the above solution, the electric telescopic rod 318 drives the stopper 317 to move, so that when the two panels 301 are in a vertical state, the stopper 317 can hold the bottom of the fiberboard 200 to be inspected, thereby preventing the fiberboard 200 to be inspected from falling.

[0027] like Fig.13 As shown, a negative pressure sleeve 324 is provided on one side of the two plate members 301 close to the fiberboard 200 to be detected, and the end of the negative pressure sleeve 324 contacts the surface of the fiberboard 200 to be detected, so that a sealed space is formed between the inner wall of the negative pressure sleeve 324 and the outer wall of the fiberboard 200 to be detected, and the negative pressure sleeve 324 is supported by a rubber material, and the negative pressure sleeve 324 is elastic, and an exhaust hole 325 is opened inside the negative pressure sleeve 324, and the exhaust hole 325 is connected with the end of the plate member 301 away from the fiberboard 200 to be detected, and an exhaust pump 326 is fixedly installed on the end of the plate member 301 away from the fiberboard 200 to be detected, and one end of the exhaust pump 326 is connected to an exhaust pipe 327, and the other end of the exhaust pipe 327 is connected to the exhaust hole 325; In the above scheme, when the driving components on the two plates 301 move the fiberboard 200 to be inspected, in order to prevent the fiberboard 200 to be inspected from falling from the ends of the two plates 301, the vacuum pump 326 is started to evacuate the negative pressure sleeve 324, so that negative pressure is formed inside the negative pressure sleeve 324, and one side of the fiberboard 200 to be inspected is adsorbed by the adsorption effect of the negative pressure; It should be noted that in order to avoid excessive adsorption force that causes the driving roller 307 to be unable to drive the fiberboard 200 to be tested to move on the plate 301, a rubber layer is connected to the surface of the driving roller 307. The elastic rubber layer increases the friction between the driving roller 307 and the surface of the fiberboard 200 to be tested. Embodiment 2: The technical solution of this embodiment is different from that of Embodiment 1 in that this embodiment provides a surface defect detection method based on the production of waterproof medium density fiberboard, comprising the following steps: S1, inserting the fiberboard 200 to be inspected into the defect inspection box 101 from the board feed port 102, and the reversing assembly 300 transports the fiberboard 200 to be inspected to the bottom of the first camera 104; S2, the first camera 104 detects the top surface of the fiberboard 200 to be inspected; S3, the reversing assembly 300 drives the fiberboard 200 to be inspected to rotate, so that the upper, lower, left and right four surfaces of the fiberboard 200 to be inspected are respectively aligned with the bottom of the first camera 104; S4. The reversing assembly 300 drives the fiberboard 200 to be inspected to tilt so that the tilt angle of the fiberboard 200 to be inspected matches the tilt angle of the board discharge port 103. Under the action of gravity, the fiberboard 200 to be inspected slides out of the defect inspection box 101 from the board discharge port 103 to complete the inspection. In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] In the embodiments of the present application, the devices or elements referred to or implied must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise precisely and specifically specified.

[0030] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A surface defect detection device based on the production of waterproof medium-density fiberboard, comprising a defect detection box (101), wherein the defect detection box (101) has a visual sensor inside, and the visual sensor is used to identify and detect surface defects of the fiberboard (200) to be detected. Its features include: A plate material inlet (102) and a plate material outlet (103), wherein the plate material inlet (102) and the plate material outlet (103) are arranged on the side of the defect detection box (101); a first camera (104), the first camera (104) being installed above the defect detection box (101), the recognition direction of the first camera (104) facing downward, and the first camera (104) being used to recognize objects below it; A second camera (105), wherein the second camera (105) has two second cameras (105), the two second cameras (105) are respectively installed at the front and rear ends of the defect detection box (101), the recognition direction of the two second cameras (105) is horizontal, and the second camera (105) is used to recognize objects within its lateral range; A reversing assembly (300) is used to fix the fiberboard to be inspected (200) and allow the fiberboard to be inspected (200) to rotate inside the defect inspection box (101), so that the upper, lower, left and right four surfaces of the fiberboard to be inspected (200) can be aligned with the bottom of the first camera (104) in sequence.

2. The surface defect detection device based on the production of waterproof medium density fiberboard according to claim 1, characterized in that: The reversing assembly (400) comprises: A plate member (301), wherein two of the plate members (301) are arranged in parallel, the two plate members (301) are arranged on the left and right sides of the fiberboard (200) to be detected, respectively, and the two plate members (301) are arranged on the upper and lower ends of the fiberboard (200) to be detected, respectively; A first rotating shaft (302), wherein the first rotating shaft (302) has two parts, and the two first rotating shafts (302) are respectively fixedly connected to adjacent ends of the two plates (301), and the two plates (301) rotate with the central axis of the first rotating shaft (302) as the rotation axis; The fixed disk (304) has two fixed disks (304), and the two fixed disks (304) are respectively arranged at the front and rear ends of the plate (301), and the front and rear ends of the first rotating shaft (302) are respectively rotatably connected to the two fixed disks (304).

3. The surface defect detection device based on the production of waterproof medium density fiberboard according to claim 2, characterized in that: Also includes: A first gear (303), wherein the first gear (303) has two first gears (303), and the two first gears (303) are respectively fixedly connected to the same end of the two first rotating shafts (302); a second gear (305), the second gear (305) being arranged between the two first gears (303), the second gear (305) being respectively meshed with the two first gears (303), and when the second gear (305) rotates, it can drive the two first gears (303) to rotate, the second gear (305) being rotatably mounted on the middle part of a fixed disk (304) at the front end of the plate (301), the fixed axis of the second gear (305) being rotatably connected to the front end of the defect detection box (101), and the fixed disk (304) at the rear end of the plate (301) being rotatably connected to the rear end of the defect detection box (101).

4. The surface defect detection device based on the production of waterproof medium density fiberboard according to claim 3, characterized in that: Also includes: A first motor (306), wherein the first motor (306) is fixedly mounted on the front end outer wall of the defect detection box (101), and an output shaft of the first motor (306) is connected to a fixed shaft of the second gear (305), and the first motor (306) can drive the second gear (305) to rotate.

5. The surface defect detection device based on the production of waterproof medium density fiberboard according to claim 2, characterized in that: A second motor (328) is installed in the middle of the fixed disk (304) at the rear end of the plate (301); an output shaft of the second motor (328) is fixedly connected to the rear end of the fixed disk (304); the second motor (328) rotates to drive the fixed disk (304) to rotate as a whole, thereby causing the two plate members (301) on the fixed disk (304) to rotate synchronously.

6. The surface defect detection device based on the production of waterproof medium density fiberboard according to claim 2, characterized in that: The plate members (301) are each provided with a driving assembly, the driving assembly comprising: There are two driving rollers (307), and the two driving rollers (307) are respectively arranged at two ends of the plate (301); An accommodating groove (3011) is provided at both ends of the plate (301), and the driving roller (307) rotates in the accommodating groove (3011); The second rotating shaft (308) is fixedly connected to the middle part of the driving roller (307), and rotating holes (3014) are provided at both ends of the accommodating groove (3011). The two ends of the second rotating shaft (308) are rotatably connected to the inside of the rotating holes (3014).

7. The surface defect detection device based on the production of waterproof medium density fiberboard according to claim 6, characterized in that: The drive assembly also includes: A motor slot (3013) is provided at one end of the plate (301), one end of the rotating hole (3014) penetrates into the interior of the motor slot (3013), a third motor (309) is fixedly installed inside the motor slot (3013), an output shaft of the third motor (309) is connected to one end of one of the driving rollers (307), and the third motor (309) can drive the driving roller (307) to rotate; A sprocket (310) is connected to both ends of the two driving rollers (307); the two sprockets (310) at adjacent ends are connected by a chain (312); a chain groove (3012) is provided in the middle of the plate (301); the chain groove (3012) penetrates into the receiving grooves (3011) at both ends of the plate (301).

8. The surface defect detection device based on the production of waterproof medium density fiberboard according to claim 2, characterized in that: A limiting component is also provided at one end of the plate (301), and the limiting component comprises: A sliding plate (313), the sliding plate (313) being arranged at one end of the plate member (301), a sliding groove (314) being provided on a side of the plate member (301) close to the sliding plate (313), the sliding plate (313) being slidably connected to the sliding groove (314), a limiting groove (316) being provided on an inner wall of the sliding groove (314), an end of the sliding plate (313) close to the limiting groove (316) being connected to a limiting block (315), and the limiting block (315) being slidably connected to the limiting groove (316); A stopper (317) installed below the sliding plate (313); An electric telescopic rod (318), wherein the bottom of the electric telescopic rod (318) is fixedly connected to the top of the stopper (317); A rack (319), the rack (319) being fixedly connected to the bottom of the sliding plate (313), a third gear (320) being arranged below the rack (319), the third gear (320) being meshed with the rack (319); a fourth motor (321) fixedly mounted on the outer wall of the plate (301), the output shaft of the fourth motor (321) being fixedly connected to the third gear (320); A rotation groove (322) is provided on the outer wall of the plate (301); the third gear (320) is rotatably mounted inside the rotation groove (322); a baffle (323) is connected to the outside of the rotation groove (322); and an output shaft of the fourth motor (321) passes through the baffle (323) and is connected to the third gear (320).

9. The surface defect detection device based on the production of waterproof medium density fiberboard according to claim 2, characterized in that: A negative pressure sleeve (324) is provided on one side of the two plate members (301) close to the fiberboard to be detected (200), and an end of the negative pressure sleeve (324) contacts the surface of the fiberboard to be detected (200), so that a sealed space is formed between the inner wall of the negative pressure sleeve (324) and the outer wall of the fiberboard to be detected (200), and the negative pressure sleeve (324) is supported by a rubber material and has elasticity. An exhaust hole (325) is provided inside the negative pressure sleeve (324), and the exhaust hole (325) is connected to an end of the plate member (301) away from the fiberboard to be detected (200). An exhaust pump (326) is fixedly installed on the end of the plate member (301) away from the fiberboard to be detected (200), and one end of the exhaust pump (326) is connected to an exhaust pipe (327), and the other end of the exhaust pipe (327) is connected to the exhaust hole (325).

10. A method for detecting surface defects in the production of waterproof medium density fiberboard, using the device for detecting surface defects in the production of waterproof medium density fiberboard according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, inserting the fiberboard to be inspected (200) into the interior of the defect inspection box (101) from the board material feeding port (102), and the reversing component (300) conveys the fiberboard to be inspected (200) to the bottom of the first camera (104); S2, the first camera (104) inspects the top surface of the fiberboard (200) to be inspected; S3, the reversing assembly (300) drives the fiberboard to be inspected (200) to rotate, so that the upper, lower, left and right four surfaces of the fiberboard to be inspected (200) are respectively aligned with the bottom of the first camera (104); S4. The reversing assembly (300) drives the fiberboard to be inspected (200) to tilt, so that the tilt angle of the fiberboard to be inspected (200) matches the tilt angle of the board material outlet (103). Under the action of gravity, the fiberboard to be inspected (200) slides out of the defect inspection box (101) from the board material outlet (103), and the inspection is completed.

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