Veneer defect detection and classification device and centering rotary-cut stacked veneer processing production line

Abstract

The utility model provides a veneer defect detection and classification device and a centering rotary-cut stacking veneer processing production line, and belongs to the technical field of wood veneer processing equipment, and the veneer defect detection and classification device comprises a driving device, a detection conveyor belt mechanism, a pressing conveyor belt mechanism, a detection device, a classification device and a control device. The detection conveyor belt mechanism is provided with a first conveyor belt. The pressing conveyor belt mechanism is provided with a second conveyor belt. The veneers are compressed and conveyed between the first conveying belt and the second conveying belt. Then the single board moves to the bottom end of the detection device, the detection device detects defects of the single board and transmits a feedback result to the control device, the control device controls the classification device to classify qualified products and unqualified products, and the qualified products and the unqualified products can be automatically and accurately judged and automatically classified. The production line can achieve the whole process of log feeding, rotary cutting, detection classification and stacking. Due to the fact that the single plate defect detecting and classifying device is additionally arranged, accurate distinguishing of qualified products and unqualified products can be achieved, and the yield is guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wood veneer processing equipment, and more particularly to a veneer defect detection and classification device and a centering rotary cutting and stacking veneer processing production line. BACKGROUND

[0002] In order to save wood resources and improve the utilization rate of wood, people have invented glued laminated wood. In the production of veneer, the rotary cutting method is used for processing. For example, the full-automatic intelligent feeding centering rotary cutting and stacking veneer processing production line with the publication number CN113771175B and the name of the applicant is used for producing veneer.

[0003] In the scheme of the disclosed patent, after the veneer is rotary cut, the veneer is transported to the qualified veneer shunting device and the unqualified veneer recycling device. Among them, the unqualified veneer is crushed and falls onto the recycling guide frame through the unqualified veneer recycling device. However, it is found that the scheme lacks effective means for detecting defects of the veneer, resulting in ambiguous judgment of whether the veneer is qualified, and low efficiency and low accuracy of manual judgment.

[0004] At the same time, in the unqualified veneer recycling device of the above-mentioned disclosed patent, the unqualified veneer is cut and then conveyed to the no-power guide roller and the recycling guide belt through the rear veneer conveying frame. Under the rotating of the recycling guide belt and the clamping and guiding of the no-power guide roller, the unqualified veneer is guided onto the recycling guide frame and moved forward to the broken board receiving device under the driving of the recycling guide belt. In this process, since the unqualified veneer has various types of defects such as cracking and inequality, it may be broken and stuck or clogged due to uncertain defect properties when passing through the no-power guide roller clamping from the recycling guide belt. It is difficult to ensure the stability of the conveying after a long time of operation. SUMMARY

[0005] To solve the problems of the prior art, the present utility model provides a veneer defect detection and classification device and a centering rotary cutting and stacking veneer processing production line, which can detect defects of the rotary cut veneer and accurately distinguish qualified products and unqualified products, and can ensure that the recycled unqualified products will not be stuck.

[0006] To achieve the above objectives, the technical solution of this application provides a single-board defect detection and classification device, including a mounting frame, a driving device, a detection conveyor belt mechanism, a pressing conveyor belt mechanism, a detection device, a classification device, and a control device. The detection conveyor belt mechanism, the pressing conveyor belt mechanism, and the detection device are all mounted on the mounting frame. The pressing conveyor belt mechanism and the detection device are both located on the top side of the detection conveyor belt mechanism and arranged sequentially along the conveying direction of the detection conveyor belt mechanism. The classification device is located at the discharge end of the detection conveyor belt mechanism. The detection conveyor belt mechanism has a first conveyor belt, and the pressing conveyor belt mechanism includes a second conveyor belt arranged parallel to and spaced apart from the first conveyor belt. Both the detection conveyor belt mechanism and the pressing conveyor belt mechanism are driven by the driving device. The surfaces of the second conveyor belt and the first conveyor belt that are opposite to each other move in the same direction at the same speed. The detection device is arranged facing the first conveyor belt. The driving device, the detection device, and the classification device are all controlled by the control device.

[0007] The control device can employ a common PLC controller. The boards are conveyed by a detection conveyor belt mechanism, and are pressed and transported between the first and second conveyor belts. The boards are clamped and flattened on the detection mechanism by the first and second conveyor belts, reducing the impact of surface unevenness on the detection results and ensuring positional stability. The boards then move to the bottom of the detection device, where they undergo defect detection, checking for holes or cracks, and the feedback is transmitted to the control device. The control device then controls the sorting device to classify the qualified and unqualified products. Because the sorting process is implemented by the control system, detection device, and sorting device, it can automatically and accurately determine and classify qualified and unqualified products, achieving higher accuracy and efficiency compared to manual identification. The second conveyor belt moves in the same direction and at the same speed as the first conveyor belt, ensuring no sliding friction occurs between the boards and the first and second conveyor belts, preventing wear on the equipment and boards.

[0008] Optionally, the detection conveyor belt mechanism further includes a first drive shaft and a first driven shaft rotatably mounted on the mounting frame. The first drive shaft is fixedly sleeved with a first drive wheel and a first driving wheel, and the first driven shaft is fixedly sleeved with a first driven wheel. The first conveyor belt is closedly wrapped around the outside of the first drive wheel and the first driven wheel.

[0009] The pressing conveyor belt mechanism also includes a second driven wheel, a third driven wheel, and a second drive shaft rotatably mounted on the mounting frame. The second drive shaft is fixedly fitted with the second drive wheel and the second drive wheel. The second driven wheel and the third driven wheel are both rotatably mounted on the mounting frame. The second conveyor belt is enclosed around the outside of the second drive wheel, the second driven wheel, and the third driven wheel. The portion of the second conveyor belt located between the second driven wheel and the third driven wheel is opposite to the first conveyor belt.

[0010] The driving device comprises a first driving motor, a synchronous wheel, a tensioning wheel, a first driving belt and a second driving belt, the output end of the first driving motor is provided with a third driving wheel; the first driving motor is fixedly installed on a mounting frame, the synchronous wheel and the tensioning wheel are rotatably installed on the mounting frame, the first driving belt is arranged in a closed loop around the third driving wheel, the synchronous wheel, the tensioning wheel and the first driving wheel, and the second driving belt is arranged in a closed loop around the synchronous wheel and the second driving wheel; and the driving motor is controlled by a control device.

[0011] Since the first conveying belt and the second conveying belt are driven by the first driving motor, the first conveying belt and the second conveying belt can be synchronously started and stopped, and the speed of the two can be made the same by setting a reasonable transmission ratio, so as to ensure that the starting, stopping and movement of the two are synchronous, and the two do not slide and rub against the single board when clamping the single board.

[0012] Optionally, the pressing conveying belt mechanism further comprises a movable frame, the second driving shaft is rotatably arranged on the movable frame, and the second driven wheel and the third driven wheel are both rotatably installed on the movable frame; the mounting frame is provided with a connecting beam located at the top of the movable frame, a spring is vertically connected between the connecting beam and the movable frame, a screw rod is vertically arranged on the connecting beam, the bottom end of the screw rod penetrates the movable frame, the movable frame can vertically slide along the screw rod, and a limiting nut is screwed on the screw rod and located at the top of the movable frame. The movable frame can realize a certain vertical movement through the spring, so that the distance between the first conveying belt and the second conveying belt can be changed. Through this setting, single boards of different thicknesses can be adapted, and when encountering single boards with undulations or foreign matters, the floating of the movable frame can ensure the smooth passing of the single boards and prevent them from being stuck.

[0013] Optionally, the detection device is a laser detector or a visual detection device. The laser detector can judge whether there is a hole or a crack on the single board by emitting laser to judge whether there is an obstruction. The visual detection device can judge the defects of the single board through the image of the visual camera, and also can realize automatic judgment of defects through AI assistance.

[0014] Optionally, the first belt conveyor is provided, the sorting device comprises a swing sorting mechanism, a recycling device and a synthetic stack automatic stacking device; the synthetic stack automatic stacking device has a frame, a conveying mechanism and a plate collecting mechanism at the bottom end of the conveying mechanism; the feeding end of the first belt conveyor is connected with the discharging end of the detection conveyor mechanism, the discharging end of the first belt conveyor is provided with the swing sorting mechanism, the recycling device is located at the bottom end of the first belt conveyor, the frame is provided with a guide plate extending to the bottom side of the conveying mechanism, the bottom end of the guide plate is arranged towards the recycling device, the swing sorting mechanism is swing-aligned to the bottom side of the conveying mechanism or the guide plate, and the first belt conveyor and the swing sorting mechanism are controlled by the control device. The first belt conveyor transports the detected single board to the sorting device, and the control device controls the swing sorting mechanism to move according to the detection result. When the single board is qualified, the swing sorting mechanism is aligned to the synthetic stack automatic stacking device, and the single board is stacked. When the single board is unqualified, the swing sorting mechanism is aligned to the guide plate, and the unqualified product is guided into the recycling device for recycling.

[0015] Optionally, the first belt conveyor has a second driving motor and a third driving shaft at the discharging end, the outer side of the third driving shaft is fixedly provided with a third driving wheel and a fourth driving wheel, the second driving motor is installed on a mounting bracket, the third driving shaft is rotatably arranged on the mounting bracket, and the second driving motor is in transmission connection with the fourth driving wheel; the swing sorting mechanism comprises a swing frame, a swing cylinder, a fourth driving wheel, a third conveyor belt and a fourth driven wheel; the end of the swing frame is rotatably arranged on the outer side of the third driving shaft, the fourth driven wheel is rotatably installed on the end of the swing frame away from the third driving shaft, the fourth driving wheel is fixedly arranged on the outer side of the third driving shaft, the third conveyor belt is arranged in a closed loop on the outer sides of the fourth driving wheel and the fourth driven wheel, the swing cylinder is hingedly connected with the mounting bracket, the output end of the swing cylinder is hingedly connected with the swing frame, and the second driving motor and the swing cylinder are controlled by the control device. The control device can control the swing cylinder to be extended or retracted, so that the swing sorting mechanism is aligned to the guide plate and the synthetic stack automatic stacking device respectively. The first belt conveyor and the third conveyor belt are driven to move by the second driving motor, and they can be started and stopped synchronously. Since the conveying belt on the first belt conveyor and the third conveyor belt are driven by the third driving wheel and the fourth driving wheel respectively, the third driving wheel and the fourth driving wheel are fixedly arranged on the third driving shaft, and the conveying belt on the first belt conveyor and the third conveyor belt can keep consistency in movement and stability in relative position.

[0016] Optionally, the synthetic laminated board automatic stacking device is further provided with a material knocking device, the material knocking device comprising a material knocking cylinder, a connecting shaft and a material knocking plate; the connecting shaft is rotatably arranged on the rack, the material knocking plate is fixedly installed on the connecting shaft, one end of the material knocking cylinder is hinged to the rack, and the other end of the material knocking cylinder is hinged to the material knocking plate; the material knocking plate can be rotatably accommodated in the interior of the conveying mechanism or rotatably extended between the swing classification mechanism and the guide plate, and the material knocking cylinder is controlled by the control device. In the process that the unqualified products are transported to the guide plate by the swing classification mechanism, the material knocking cylinder drives the material knocking plate to move, so as to knock off or bend the unqualified products to be guided to the guide plate in the same direction as the guide plate. The arrangement of the material knocking device can avoid the situation that the unqualified products are stuck between the swing classification mechanism and the guide plate due to the too long length of the unqualified products.

[0017] Optionally, the movable shearing single board pressing conveying device is located between the detection conveying belt mechanism and the first belt conveyor, the feeding end of the movable shearing single board pressing conveying device is opposite to the discharging end of the detection conveying belt mechanism, the discharging end of the movable shearing single board pressing conveying device is opposite to the feeding end of the first belt conveyor, and the movable shearing single board pressing conveying device is controlled by the control device.

[0018] The detection device can comprehensively detect the single board according to the length, if only part of the length of the single board has defects, the position with defects can be cut by the movable shearing single board pressing conveying device, the qualified part after cutting is moved to the synthetic laminated board automatic stacking device for stacking, and the unqualified part is recycled by the recycling device, so as to improve the qualified product rate and reduce waste.

[0019] Optionally, the recycling device comprises a second belt conveyor, and the feeding end of the second belt conveyor is arranged opposite to the guide plate. The unqualified products can fall on the second belt conveyor through the guide plate and be transported to a storage box, an empty space or an unqualified product processing device for centralized storage and processing.

[0020] The technical scheme of the present application further provides a centering rotary cutting and stacking single board processing production line, comprising a support frame, a log transverse conveying device, a stepped stepping log loading device, a log automatic centering device, a log automatic transfer device, a log automatic rotary cutting device, a single board conveying device and any one of the single board defect detection and classification devices, the discharging end of the single board conveying device is aligned to the feeding end of the detection conveying belt mechanism, and the log transverse conveying device, the stepped stepping log loading device, the log automatic centering device, the log automatic transfer device, the log automatic rotary cutting device and the single board conveying device are all installed on the support frame and controlled by the control device. The whole production line can realize the whole process of log loading, rotary cutting, detection and classification and stacking. Due to the addition of the single board defect detection and classification device, the accurate distinction between qualified products and unqualified products can be realized, the product yield can be ensured, and the detection efficiency can be improved.

[0021] The technical solution of the present application has the beneficial effects over the prior art in that:

[0022] The detection device detects defects of the single board, detects whether there are holes or cracked parts on the single board, and feeds back the result to the control device. The control device controls the classification device to classify the qualified products and unqualified products. Since the classification process is realized by the control system, the detection device and the classification device, accurate judgment of the qualified products and unqualified products can be realized automatically, and the classification can be realized automatically, which is more accurate and efficient than manual identification.

[0023] The guide plate can directly control the unqualified products to be diverted and fall into the recycling device, which is simpler in structure than the existing technology of using unpowered guide rollers and recycling guide belts for guiding. The material hitting device avoids blocking of the passage by the single board, ensuring the stability of long-term use. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 It is a schematic diagram of the overall structure of the single board defect detection and classification device.

[0026] Figure 2 It is a front view of the detection part structure.

[0027] Figure 3 It is a top view of the detection part structure.

[0028] Figure 4 It is Figure 1 It is a local enlarged view of A in the middle.

[0029] Figure 5 It is a top view of the connection structure of the first belt conveyor and the swing classification mechanism.

[0030] Figure 6 It is a front view of the structure of the centering rotary cutting and stacking single board processing production line.

[0031] Figure 7 It is a top view of the structure of the centering rotary cutting and stacking single board processing production line.

[0032] Icon: 100, detection part; 1, mounting frame; 101, connecting beam; 201, first conveying belt; 202, first driving shaft; 203, first driven shaft; 204, first driving wheel; 205, first driving wheel; 206, first driven wheel; 3, pressing conveying belt mechanism; 301, second conveying belt; 302, second driven wheel; 303, third driven wheel; 304, second driving shaft; 305, second driving wheel; 306, second driving wheel; 307, movable frame; 308, spring; 309, screw rod; 310, limiting nut; 4, detection device; 501, first driving motor; 502, synchronous wheel; 503, tension wheel; 504, first driving belt; 505, second driving belt; 506, third driving wheel; 6, classification device; 601, synthetic stack automatic stacking device; 602, rack; 603, conveying mechanism; 604, guide plate; 605, swing frame; 606, swing cylinder; 607, fourth driving wheel; 608, third conveying belt; 609, fourth driven wheel; 610, material hitting cylinder; 611, connecting shaft; 612, material hitting plate; 613, second belt conveyor; 7, first belt conveyor; 701, second driving motor; 702, third driving shaft; 703, third driving wheel; 704, fourth driving wheel; 8, movable shearing single board pressing conveying device; 9, support frame; 10, log transverse conveying device; 11, stepped stepping log device; 12, log automatic centering device; 13, log automatic transfer device; 14, log automatic rotary cutting device; 15, single board conveying device. DETAILED DESCRIPTION

[0033] In order to make the technical problems to be solved by the present application, the technical solutions and beneficial effects clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0034] Example 1:

[0035] The present embodiment provides a single board defect detection and classification device 6, which is based on Figures 1 to 3As shown, it comprises a mounting frame 1, a driving device, a detection conveying belt mechanism, a pressing conveying belt mechanism 3, a detection device 4, a classification device 6 and a control device. Among them, the mounting frame 1 serves as the support part of the whole, the driving device, the detection conveying belt mechanism, the pressing conveying belt mechanism 3 and the detection device 4 serve as the detection part 100 to detect the defects of the single board, and the classification device 6 classifies and stores the qualified products and unqualified products. The detection conveying belt mechanism, the pressing conveying belt mechanism 3 and the detection device 4 are all installed on the mounting frame 1, and the pressing conveying belt mechanism 3 and the detection device 4 are located on the top side of the detection conveying belt mechanism and arranged in sequence along the conveying direction of the detection conveying belt mechanism, and the classification device 6 is located at the discharge end of the detection conveying belt mechanism. The detection conveying belt mechanism has a first conveying belt 201, the pressing conveying belt mechanism 3 includes a second conveying belt 301 arranged in parallel and spaced apart with the first conveying belt 201, and the detection conveying belt mechanism and the pressing conveying belt mechanism 3 are both driven by the driving device. The surfaces of the second conveying belt 301 and the first conveying belt 201 opposite to each other move at the same speed in the same direction, the detection device 4 is arranged towards the first conveying belt 201, and the driving device, the detection device 4 and the classification device 6 are all controlled by the control device.

[0036] The control device can adopt a common PLC controller. In use, the single board is conveyed by the detection conveying belt mechanism and is tightly transmitted between the first conveying belt 201 and the second conveying belt 301. The single board is clamped and transmitted by the first conveying belt 201 and the second conveying belt 301 on the detection mechanism and is flattened to a certain extent, so as to reduce the influence of the surface ups and downs on the detection result when passing through the detection device 4 and ensure the stability of the position. Then, the single board moves to the bottom end of the detection device 4, the detection device 4 detects the defects of the single board, detects whether there are holes or cracked parts on the single board, and transmits the feedback result to the control device. When the single board detection is completed and moves to the classification device 6, the control device controls the classification device 6 to classify the qualified products and unqualified products. Since the classification process is realized by the control system, the detection device 4 and the classification device 6, the scheme of the embodiment can realize automatic and accurate judgment of qualified products and unqualified products and automatic classification, and the accuracy is higher and the efficiency is higher than that of manual identification. The surfaces of the second conveying belt 301 and the first conveying belt 201 opposite to each other move at the same speed in the same direction, which can ensure that the single board does not produce sliding friction with the first conveying belt 201 and the second conveying belt 301, and avoid the wear of the equipment and the single board.

[0037] Specifically, based on Figure 2 and Figure 3As shown, the detection conveying belt mechanism further comprises a first driving shaft 202 and a first driven shaft 203 rotatably arranged on the mounting frame 1, the first driving shaft 202 is fixedly sleeved with a first driving wheel 204 and a first driving wheel 205, the first driven shaft 203 is fixedly sleeved with a first driven wheel 206, and the first conveying belt 201 is closed loop arranged outside the first driving wheel 204 and the first driven wheel 206. The pressing conveying belt mechanism 3 further comprises a second driven wheel 302, a third driven wheel 303 and a second driving shaft 304 rotatably arranged on the mounting frame 1, the second driving shaft 304 is fixedly sleeved with a second driving wheel 305 and a second driving wheel 306, and the second driven wheel 302 and the third driven wheel 303 are rotatably arranged on the mounting frame 1. The second conveying belt 301 is closed loop arranged outside the second driving wheel 305, the second driven wheel 302 and the third driven wheel 303, and the part of the second conveying belt 301 between the second driven wheel 302 and the third driven wheel 303 is arranged opposite to the first conveying belt 201. The driving device comprises a first driving motor 501, a synchronous wheel 502, a tensioning wheel 503, a first driving belt 504 and a second driving belt 505, and the output end of the first driving motor 501 has a third driving wheel 506. The first driving motor 501 is fixedly installed on the mounting frame 1, the synchronous wheel 502 and the tensioning wheel 503 are rotatably installed on the mounting frame 1, the first driving belt 504 is closed loop arranged around the third driving wheel 506, the synchronous wheel 502, the tensioning wheel 503 and the first driving wheel 205, and the second driving belt 505 is closed loop arranged around the synchronous wheel 502 and the second driving wheel 306. The driving motor is controlled by the control device.

[0038] In this embodiment, considering the detection conveying belt mechanism is connected with other conveying mechanisms in front and back, and is suitable for single boards with wider width, based on Figure 3 As shown, the first driving wheel 204 and the first driven wheel 206 are respectively arranged with multiple first driving wheels 204 and first driven wheels 206 along the first driving shaft 202 and the first driven shaft 203, and the first driving wheel 205 is located at the end of the first driving shaft 202. Correspondingly, the first conveying belt 201 is also arranged with multiple first conveying belts 201 along the width direction, for example Figure 3 Eleven groups as shown in the middle. At the same time, the pressing conveying belt mechanism 3 has multiple groups, for example Figure 3 Nine groups in the middle, and all the pressing conveying belt mechanisms 3 share the same second driving shaft 304 and are driven by the first driving motor 501. The nine groups of pressing conveying belt mechanisms 3 correspond to the first conveying belts 201 except the first conveying belts 201 on both sides, so as to realize sufficient contact with the single board along the width direction. The detection device 4 is also arranged with multiple detection devices 4 along the width direction and penetrates all the first conveying belts 201, so as to ensure that the detection of the single board has no blind area.

[0039] In use, the first driving motor 501 drives the first driving shaft 202 to rotate through the third driving wheel 506, the synchronous wheel 502, the tensioning wheel 503, the first driving wheel 205, and the first driving belt 504, and the first driving shaft 202 drives the first conveying belt 201 to move through the first driving wheel 204. At the same time, the first driving motor 501 drives the second driving shaft 304 to rotate through the third driving wheel 506, the synchronous wheel 502, the second driving wheel 306, and the second driving belt 505, and the second driving shaft 304 drives the second conveying belt 301 to move through the second driving wheel 305. Since the first conveying belt 201 and the second conveying belt 301 are driven by the first driving motor 501 through the synchronous wheel 502, the first conveying belt 201 and the second conveying belt 301 can be started and stopped synchronously, and the speed of the two can be made the same by setting a reasonable transmission ratio, so as to ensure that the starting, stopping, and movement of the two are synchronous, and the two do not slide and rub against the single board when clamping the single board.

[0040] Further, based on Figure 2 As shown, the pressing conveying belt mechanism 3 further comprises a movable frame 307, and the second driving shaft 304 is rotatably arranged on the movable frame 307, and the second driven wheel 302 and the third driven wheel 303 are both rotatably arranged on the movable frame 307. The mounting frame 1 has a connecting beam 101 located at the top of the movable frame 307, a spring 308 is vertically connected between the connecting beam 101 and the movable frame 307, and the connecting beam 101 is further vertically provided with a screw rod 309, the bottom end of the screw rod 309 is arranged through the movable frame 307, the movable frame 307 can vertically slide along the screw rod 309, and a limiting nut 310 is screwed on the screw rod 309 and located at the top of the movable frame 307.

[0041] In use, the movable frame 307 can be vertically moved along the screw rod 309 through the spring 308, so that the distance between the first conveying belt 201 and the second conveying belt can be changed. Through this setting, single boards of different thicknesses can be adapted, and when encountering single boards with undulations or foreign objects, the smooth passing of the single boards can be ensured through the floating of the movable frame 307, and the single boards will not be stuck. At the same time, by rotating the limiting nut 310, the maximum space of the upward movement of the movable frame 307 can be adjusted, and the adjustment of the maximum floating distance of the movable frame 307 can be realized. Common second driving belts 505 all have a certain elastic allowance, which can meet the length change caused by the upward and downward movement of the movable frame 307.

[0042] The detection device 4 is a laser detector or a visual detection device, which can detect defects of the single board through laser detection or visual detection. The laser detector can judge whether there is a hole or a crack on the single board by emitting laser to judge whether there is an obstruction. The visual detection device can judge the defects of the single board through the image of the visual camera, and can also realize automatic judgment of defects through AI assistance.

[0043] Further, based onFigure 1 and Figure 4 The first belt conveyor 7 is also included as shown in the figure. The first belt conveyor 7 is used as a transportation part to transport the single board after detection to the classification device 6. The classification device 6 includes a swing classification mechanism, a recycling device, and a synthetic stack automatic stacking device 601. Among them, the synthetic stack automatic stacking device 601 adopts the synthetic stack automatic stacking device disclosed in the patent application CN211846150U of the applicant. The synthetic stack automatic stacking device 601 has a rack 602, a conveying mechanism 603, and a plate collecting mechanism at the bottom end of the conveying mechanism 603, all of which adopt the same mechanisms in the disclosed patent. The conveying mechanism 603 uses suction to adsorb the single board at the bottom end and transport the single board to the top of the plate collecting mechanism, and then stack the single board on the plate collecting mechanism. In this embodiment, the feeding end of the first belt conveyor 7 is connected with the discharging end of the detection conveying belt mechanism, the discharging end of the first belt conveyor 7 is provided with a swing classification mechanism, the recycling device is located at the bottom end of the first belt conveyor 7, the rack 602 is provided with a guide plate 604 extending to the bottom side of the conveying mechanism 603, the bottom end of the guide plate 604 is arranged towards the recycling device, the swing classification mechanism swings to align with the bottom side of the conveying mechanism 603 or the guide plate 604, and the first belt conveyor 7 and the swing classification mechanism are controlled by the control device. The guide plate 604 specifically bends from the side of the conveying mechanism 603 to the bottom end of the conveying mechanism 603, and has a certain gap with the bottom side of the conveying mechanism 603 to avoid the output channel of the qualified product.

[0044] In use, the first belt conveyor 7 transports the single board after detection to the classification device 6, and the control device controls the swing classification mechanism to move according to the detection result. When the single board is qualified, the swing classification mechanism aligns with the conveying mechanism 603 of the synthetic stack automatic stacking device 601 to transport the single board to the conveying mechanism 603 and stack on the plate collecting mechanism. When the single board is unqualified, the swing classification mechanism aligns with the guide plate 604, and the unqualified product is guided into the recycling device through the guide plate 604 for recycling. The guide plate 604 can directly control the unqualified product to turn and fall into the recycling device, which is simpler in structure compared with the existing technology of non-powered guide rollers and recycling guide belts. And through the material striking device, it avoids the single board from blocking the passage, ensuring the stability of long-term use.

[0045] Specifically, based on Figure 4As shown, the first belt conveyor 7 has a second driving motor 701 and a third driving shaft 702 located at the discharge end, the outer side of the third driving shaft 702 is fixedly sleeved with a third driving wheel 703 and a fourth driving wheel 704, the second driving motor 701 is installed on the mounting frame 1, the third driving shaft 702 is rotatably arranged on the mounting frame 1, the second driving motor 701 is in driving connection with the fourth driving wheel 704, and specific transmission modes such as chain transmission and gear transmission can be used, which will not be described herein. The swing sorting mechanism includes a swing frame 605, a swing cylinder 606, a fourth driving wheel 607, a third conveying belt 608 and a fourth driven wheel 609. The end of the swing frame 605 is rotatably sleeved on the outer side of the third driving shaft 702, the fourth driven wheel 609 is rotatably installed on the end of the swing frame 605 away from the third driving shaft 702, the fourth driving wheel 607 is fixedly sleeved on the outer side of the third driving shaft 702, the third conveying belt 608 is closed-loop arranged on the outer sides of the fourth driving wheel 607 and the fourth driven wheel 609, the swing cylinder 606 is hingedly connected with the mounting frame 1, the output end of the swing cylinder 606 is hingedly connected with the swing frame 605, and the second driving motor 701 and the swing cylinder 606 are controlled by the control device.

[0046] In this embodiment, by the same reasoning, considering the connection of the first belt conveyor 7 with other conveying mechanisms in front and the swing sorting mechanism, and adapting to single boards with a wider width, based on the above Figure 5 As shown, the third driving wheel 703 and the fourth driving wheel 607 are arranged in multiple along the extension direction of the third driving shaft 702, and the third driving wheel 703 and the fourth driving wheel 607 are alternately arranged, the first belt conveyor 7 has multiple conveying belts corresponding to the third driving wheel 703 one by one, and the fourth driven wheel 609 and the third conveying belt 608 each have multiple and correspond to the fourth driving wheel 607 one by one. At this time, the third conveying belt 608 and the conveying belts on the first belt conveyor 7 are alternately arranged, which can make the single board more smoothly conveyed from the conveying belts of the first belt conveyor 7 to the third conveying belt 608.

[0047] When in use, the control device can control the extension and retraction of the swing cylinder 606 to align the swing classification mechanism to the guide plate 604 and the automatic stacking device 601 of the synthetic stack respectively. When the detection device 4 detects that the single board is qualified, the control device drives the swing classification mechanism to rotate upward by the swing cylinder 606 to align to the conveying mechanism 603 of the automatic stacking device 601 of the synthetic stack. When the detection device 4 detects that the single board is unqualified, the control device drives the swing classification mechanism to rotate downward by the swing cylinder 606 to align to the guide plate 604. The first belt conveyor 7 and the third conveying belt 608 are driven to move by the second driving motor 701, and the two can be started and stopped synchronously. Moreover, the conveying belt on the first belt conveyor 7 and the third conveying belt 608 are driven by the third driving wheel 703 and the fourth driving wheel 607 respectively, the third driving wheel 703 and the fourth driving wheel 607 are fixedly sleeved on the third driving shaft 702, and the conveying belt on the first belt conveyor 7 and the third conveying belt 608 can keep consistency in movement and stability in relative position.

[0048] Further, based on Figure 4 As shown, the automatic stacking device 601 of the synthetic stack is further provided with a material knocking device. The material knocking device comprises a knocking cylinder 610, a connecting shaft 611 and a knocking plate 612. The connecting shaft 611 is rotatably arranged on the rack 602, the knocking plate 612 is fixedly installed on the connecting shaft 611, one end of the knocking cylinder 610 is hinged to the rack 602, and the other end of the knocking cylinder 610 is hinged to the knocking plate 612. The knocking plate 612 can be rotated to be accommodated in the interior of the conveying mechanism 603 or to be extended between the swing classification mechanism and the guide plate 604, and the knocking cylinder 610 is controlled by the control device. During the transportation of the unqualified product by the swing classification mechanism to the guide plate 604, the knocking cylinder 610 drives the knocking plate 612 to move, so as to knock off the unqualified product or guide the unqualified product to be bent to be in the same direction as the guide plate 604. The setting of the material knocking device can avoid the situation that the unqualified product is too long and the end of the unqualified product is stuck between the swing classification mechanism and the guide plate 604 due to the resistance of the guide plate 604.

[0049] Further, based on Figure 1 As shown, the material pressing and conveying device 8 with movable shearing is further included. The material pressing and conveying device 8 with movable shearing is the material pressing and conveying device 8 with movable shearing disclosed in the patent application CN216031394U of the applicant, and the specific structure will not be described herein. The material pressing and conveying device 8 with movable shearing is located between the detection conveying belt mechanism and the first belt conveyor 7, the feeding end of the material pressing and conveying device 8 with movable shearing is opposite to the discharging end of the detection conveying belt mechanism, the discharging end of the material pressing and conveying device 8 with movable shearing is opposite to the feeding end of the first belt conveyor 7, and the material pressing and conveying device 8 with movable shearing is controlled by the control device.

[0050] In use, the detection device 4 detects the single board in its entire length. If only part of the length of the single board is defective, the defective part can be cut by the movable shearing single board pressing conveying device 8. The qualified part after cutting is moved to the synthetic stack board automatic stacking device 601 by the swing classification mechanism. The unqualified part is recycled by the recycling device to improve the qualified product rate and reduce waste.

[0051] Further, based on Figure 1 and Figure 4 As shown, the recycling device includes a second belt conveyor 613. The feeding end of the second belt conveyor 613 is arranged opposite to the guide plate 604. The unqualified product can fall on the second belt conveyor 613 through the guide plate 604 and be transported to a storage box, an empty space, or an unqualified product processing device for centralized storage and processing of the unqualified product.

[0052] Embodiment 2:

[0053] The embodiment provides a centering rotary cutting and stacking single board processing production line, based on Figure 6 and Figure 7 As shown, the centering rotary cutting and stacking single board processing production line includes a support frame 9, a log transverse conveying device 10, a stepped stepping log loading device 11, a log automatic centering device 12, a log automatic transfer device 13, a log automatic rotary cutting device 14, a single board conveying device 15, and the single board defect detection and classification device 6 shown in Embodiment 1.

[0054] The log transverse conveying device 10, the stepped stepping log loading device 11, the log automatic centering device 12, the log automatic transfer device 13, the log automatic rotary cutting device 14, and the single board conveying device 15 all adopt the same-named devices in the full-automatic intelligent loading and centering rotary cutting and stacking single board processing production line disclosed in CN113771175B. The support frame 9 corresponds to the rack 602 in the disclosed patent. The support frame 9, the log transverse conveying device 10, the stepped stepping log loading device 11, the log automatic centering device 12, the log automatic transfer device 13, the log automatic rotary cutting device 14, and the single board conveying device 15 are arranged in the same way as the corresponding devices in the disclosed patent, and thus will not be described again. The discharge end of the single board conveying device 15 is aligned with the feeding end of the detection conveying belt mechanism. The log transverse conveying device 10, the stepped stepping log loading device 11, the log automatic centering device 12, the log automatic transfer device 13, the log automatic rotary cutting device 14, and the single board conveying device 15 are all installed on the support frame 9 and controlled by a control device.

[0055] In use, the logs are fed to the log automatic centering device 12 by the wood transverse conveying device and the stepped step-up wood device 11, and after being centered by the log automatic centering device 12, the logs are transferred to the log automatic rotating device 14 by the log automatic transfer device 13 to form veneers, and the veneers are transported to the veneer defect detection and classification device 6 by the veneer conveying device 15. The logs can realize the whole process of log feeding, rotary cutting, detection and classification and stacking in the whole production line. Due to the addition of the veneer defect detection and classification device 6, the accurate distinction of qualified products and unqualified products can be realized, the yield is ensured, and the detection efficiency is improved.

[0056] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A single board defect detection classification apparatus, characterized by: The device comprises a mounting frame, a driving device, a detection conveying belt mechanism, a pressing conveying belt mechanism, a detection device, a classification device and a control device, the detection conveying belt mechanism, the pressing conveying belt mechanism and the detection device are mounted on the mounting frame, the pressing conveying belt mechanism and the detection device are arranged in sequence along the conveying direction of the detection conveying belt mechanism on the top side of the detection conveying belt mechanism, and the classification device is located at the discharging end of the detection conveying belt mechanism. The detection conveying belt mechanism has a first conveying belt, the pressing conveying belt mechanism comprises a second conveying belt arranged in parallel with the first conveying belt, the detection conveying belt mechanism and the pressing conveying belt mechanism are driven by the driving device, the surfaces of the second conveying belt and the first conveying belt opposite to each other move at the same speed in the same direction, the detection device is arranged towards the first conveying belt, and the driving device, the detection device and the classification device are controlled by the control device.

2. The single board defect detection classification apparatus of claim 1, wherein: The detection conveying belt mechanism further comprises a first driving shaft and a first driven shaft rotatably arranged on the mounting frame, the first driving shaft is fixedly sleeved with a first driving wheel and a first driving wheel, the first driven shaft is fixedly sleeved with a first driven wheel, and the first conveying belt is closed loop arranged outside the first driving wheel and the first driven wheel. The pressing conveying belt mechanism further comprises a second driven wheel, a third driven wheel and a second driving shaft rotatably arranged on the mounting frame, the second driving shaft is fixedly sleeved with a second driving wheel and a second driving wheel, the second driven wheel and the third driven wheel are rotatably arranged on the mounting frame, the second conveying belt is closed loop arranged outside the second driving wheel, the second driven wheel and the third driven wheel, and the part of the second conveying belt between the second driven wheel and the third driven wheel is arranged opposite to the first conveying belt. The driving device comprises a first driving motor, a synchronous wheel, a tensioning wheel, a first driving belt and a second driving belt, the output end of the first driving motor has a third driving wheel, the first driving motor is fixedly mounted on the mounting frame, the synchronous wheel and the tensioning wheel are rotatably mounted on the mounting frame, the first driving belt is closed loop arranged around the third driving wheel, the synchronous wheel, the tensioning wheel and the first driving wheel, and the second driving belt is closed loop arranged around the synchronous wheel and the second driving wheel, and the driving motor is controlled by the control device.

3. The single board defect detection classification apparatus of claim 2, wherein: The pressing conveying belt mechanism further comprises a movable frame, the second driving shaft is rotatably arranged on the movable frame, and the second driven wheel and the third driven wheel are rotatably mounted on the movable frame. The mounting frame has a connecting beam located on the top of the movable frame, springs are vertically connected between the connecting beam and the movable frame, a screw rod is vertically arranged on the connecting beam, the bottom end of the screw rod penetrates the movable frame, the movable frame can vertically slide along the screw rod, and a limiting nut located on the top of the movable frame is screwed on the screw rod.

4. The single board defect detection classification apparatus of claim 1 or 2 or 3, wherein: The detection device is a laser detector or a visual detection device.

5. The single board defect detection classification apparatus of claim 1 or 2 or 3, wherein: Further comprising a first belt conveyor, the sorting device comprises a swing sorting mechanism, a recycling device and a synthetic stack automatic stacking device; the synthetic stack automatic stacking device has a rack, a conveying mechanism and a plate collecting mechanism at the bottom end of the conveying mechanism; The feeding end of the first belt conveyor is butted with the discharging end of the detection conveyor belt mechanism, the discharging end of the first belt conveyor is provided with the swing sorting mechanism, the recycling device is located at the bottom end of the first belt conveyor, the rack is provided with a guide plate extending to the bottom side of the conveying mechanism, the bottom end of the guide plate is arranged towards the recycling device, the swing sorting mechanism swings to align to the bottom side of the conveying mechanism or the guide plate, and the first belt conveyor and the swing sorting mechanism are controlled by the control device.

6. The single board defect detection classification apparatus of claim 5, wherein: The first belt conveyor has a second driving motor and a third driving shaft at the discharging end, a third driving wheel and a fourth driving wheel are fixedly sleeved on the outside of the third driving shaft, the second driving motor is installed on the mounting rack, and the third driving shaft is rotatably arranged on the mounting rack; the second driving motor is in transmission connection with the fourth driving wheel. The swing sorting mechanism comprises a swing frame, a swing cylinder, a fourth driving wheel, a third conveyor belt and a fourth driven wheel; the end of the swing frame is rotatably sleeved on the outside of the third driving shaft, the fourth driven wheel is rotatably installed at the end of the swing frame away from the third driving shaft, the fourth driving wheel is fixedly sleeved on the outside of the third driving shaft, the third conveyor belt is closed loop arranged on the outside of the fourth driving wheel and the fourth driven wheel, the swing cylinder is hingedly connected with the mounting rack, the output end of the swing cylinder is hingedly connected with the swing frame, and the second driving motor and the swing cylinder are controlled by the control device.

7. The single board defect detection classification apparatus of claim 5, wherein: The synthetic stack automatic stacking device is further provided with a material beating device, the material beating device comprises a material beating cylinder, a connecting shaft and a material beating plate; The connecting shaft is rotatably arranged on the rack, the material beating plate is fixedly installed on the connecting shaft, one end of the material beating cylinder is hingedly connected with the rack, and the other end of the material beating cylinder is hingedly connected with the material beating plate; the material beating plate can be rotatably accommodated in the interior of the conveying mechanism or rotatably extended between the swing sorting mechanism and the guide plate, and the material beating cylinder is controlled by the control device.

8. The single board defect detection classification apparatus of claim 5, wherein: Further comprising a movable shearing single board pressing conveying device, the movable shearing single board pressing conveying device is located between the detection conveyor belt mechanism and the first belt conveyor, the feeding end of the movable shearing single board pressing conveying device is opposite to the discharging end of the detection conveyor belt mechanism, the discharging end of the movable shearing single board pressing conveying device is opposite to the feeding end of the first belt conveyor, and the movable shearing single board pressing conveying device is controlled by the control device.

9. The single board defect detection classification apparatus of claim 5, wherein: The recycling device comprises a second belt conveyor, and the feeding end of the second belt conveyor is arranged opposite to the guide plate.

10. A centering rotary-cut veneer stacking line, characterized by: The device comprises a support frame, a log transverse conveying device, a stepped log stepping-up device, a log automatic centering device, a log automatic transfer device, a log automatic rotary cutting device, a veneer conveying device, and a veneer defect detection and classification device as claimed in any one of claims 1-9, the discharge end of the veneer conveying device is aligned to the feeding end of the detection conveying belt mechanism, the log transverse conveying device, the stepped log stepping-up device, the log automatic centering device, the log automatic rotary cutting device and the veneer conveying device are all installed on the support frame and controlled by the control device.

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