An automatic feeding system and intelligent screening line for selecting particle flakes

Abstract

The present invention relates to an automatic feeding system and an intelligent screening line for selecting particle flakes, including a material receiving and conveying mechanism. The discharging side of the material receiving and conveying mechanism is connected to the feeding sides of a plurality of flake sorting and conveying mechanisms. Along the conveying direction of the particle flakes, the flake sorting and conveying mechanism includes a first downward slide plate, a first conveying mechanism, a second downward slide plate, a second conveying mechanism, a third downward slide plate, and a third conveying mechanism arranged in sequence. Along the conveying direction of the particle flakes, the width of the first downward slide plate gradually decreases so that the width of its discharging side corresponds to the width of the particle flakes. A baffle is provided above the feeding end of the second conveying mechanism, and there is a set gap between the bottom end of the baffle and the top surface of the second conveying mechanism. The feeding end of the third downward slide plate is at a first set distance below the discharging end of the second conveying mechanism, and the discharging end is at a second set distance above the feeding end of the third conveying mechanism. By using the present invention, the automation and intelligence of the particle flake screening process are realized, and the labor safety of the staff is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of particle flakes, and particularly to an automatic feeding system and an intelligent screening line for screening particle flakes. Background Art

[0002] The statements herein only provide background art related to the present invention and do not necessarily constitute prior art.

[0003] Particle boards are made from processed particle flakes. The detection of particle flakes is an important part of quality control in the production process of particle boards. If the quality of particle flakes fails to meet the standard, it will lead to a reduction in the product grade of particle boards, an increase in the scrap rate, and even production accidents. Currently, there is no detection system for particle flakes. Manual detection of particle flakes has a high labor intensity, low detection efficiency, and cannot guarantee the detection quality. The current visual intelligent screening system can be applied to the detection and screening of particle flakes to achieve automatic and intelligent screening of particle flakes, reduce the labor intensity of workers, improve the detection efficiency, and ensure the detection quality. However, when using the visual intelligent screening system to detect particle flakes, the particle flakes need to be fed into the visual intelligent screening system at a certain interval one by one. Currently, when the particle flakes arrive, all the particle flakes are randomly stacked together. Therefore, it is an urgent problem for those skilled in the art to automatically arrange the randomly stacked particle flakes so that they enter the visual intelligent screening system at a certain interval one by one. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide an automatic feeding system and an intelligent screening line for screening particle flakes, which can automatically separate the randomly stacked particle flakes into a state of being arranged in sequence at a certain interval one by one, facilitating the detection using the visual intelligent screening system.

[0005] To achieve the above purpose, the present invention is implemented through the following technical solutions:

[0006] In a first aspect, an embodiment of the present invention provides an automatic feeding system for screening wood chips, including a material receiving and conveying mechanism. The discharging side of the material receiving and conveying mechanism is connected to the feeding sides of a plurality of sheet sorting and conveying mechanisms. Along the conveying direction of the wood chips, the sheet sorting and conveying mechanism includes a first downward slide plate, a first conveying mechanism, a second downward slide plate, a second conveying mechanism, a third downward slide plate, and a third conveying mechanism arranged in sequence. Along the conveying direction of the wood chips, the width of the first downward slide plate gradually decreases so that the width of its discharging side corresponds to the width of the wood chips. A baffle is provided above the feeding end of the second conveying mechanism, and there is a set gap between the bottom end of the baffle and the top surface of the second conveying mechanism so that only a single wood chip can pass through the gap between the baffle and the second conveying mechanism. The feeding end of the third downward slide plate is located at a first set distance below the discharging end of the second conveying mechanism, and the discharging end is located at a second set distance above the feeding end of the third conveying mechanism.

[0007] Optionally, a fourth conveying mechanism is provided at a third set distance in front of the first conveying mechanism, and the top surface of the fourth conveying mechanism is higher than the top surface of the first conveying mechanism by a fourth set distance to preliminarily spread the stacked wood chips.

[0008] Further, the end of the fourth conveying mechanism is connected to the material receiving and conveying mechanism.

[0009] Optionally, along the conveying direction of the wood chips, a 3D laser profile sensor and a blowing pump are sequentially arranged on one side of the second conveying mechanism downstream of the baffle. The 3D laser profile sensor is used to detect the stacked wood chips to blow off the stacked wood chips through the blowing pump.

[0010] Further, a fifth conveying mechanism is provided on the opposite side of the blowing pump to receive the wood chips blown off by the blowing pump, and the end of the fifth conveying mechanism is connected to the material receiving and conveying mechanism.

[0011] Optionally, the baffle is connected to a first lifting mechanism to adjust the distance between the bottom end of the baffle and the second conveying mechanism.

[0012] Optionally, the discharging end of the first downward slide plate is hinged to a support plate, the other end of the first downward slide plate is hinged to one end of an angle adjusting oil cylinder, and the other end of the angle adjusting oil cylinder is hinged to the support plate. The support plate is installed on a first walking vehicle through a second lifting mechanism. Correspondingly, the material receiving and conveying mechanism is installed on a second walking vehicle through a third lifting mechanism.

[0013] Optionally, the central position of the third downward slide plate is connected to a rotation driving element to adjust the angle of the third downward slide plate.

[0014] Optionally, the first downward slide plate is connected with a vibration motor.

[0015] In a second aspect, an embodiment of the present invention provides an intelligent screening line for wood chips, which includes the automatic feeding system for screening wood chips described in the first aspect. The discharge end of the third conveying mechanism corresponds to the feeding end of the visual intelligent screening system. The visual intelligent screening system includes a screening sliding plate, which is made of a transparent plate. Along the conveying direction of the wood chips, a 3D laser profile sensor, a first sorting device, a first color mark sensor group, a second sorting device, a second color mark sensor group, and a third sorting device are arranged in sequence. Among them, the 3D laser profile sensor and the first color mark sensor group are located above the screening sliding plate, and the second color mark sensor group is located below the screening sliding plate.

[0016] Optionally, the screening sliding plate is connected to an angle adjustment mechanism, and the 3D laser profile sensor, the first sorting device, the first color mark sensor group, the second sorting device, the second color mark sensor group, and the third sorting device are all connected to the screening sliding plate through brackets;

[0017] Further, the 3D laser profile sensor, the first color mark sensor group, and the second color mark sensor group are all connected to the bracket through a fourth lifting mechanism.

[0018] Optionally, the first sorting device and the second sorting device adopt robotic arms, and vacuum suction cups are provided at the ends of the robotic arms.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. In the automatic feeding system for screening wood chips of the present invention, the width of the discharge end of the first sliding plate matches the width of the wood chips, so that the first sliding plate only allows single wood chips with the length direction arranged along the conveying direction to pass through, or multiple stacked wood chips with the length direction arranged along the conveying direction to pass through, which plays a role in adjusting the orientation of the wood chips and realizes the directional arrangement of the wood chips. After the wood chips enter the second conveying mechanism through the second sliding plate, under the action of the baffle, the spreading of the wood chips is realized, and the stacking of the wood chips is avoided. Since the feeding end of the third sliding plate is set at a certain distance below the discharge end of the second conveying mechanism, when the wood chips fall into the third sliding plate, a certain distance is generated between adjacent wood chips, realizing the arrangement of the wood chips at intervals. The wood chips arranged at intervals can enter the third conveying mechanism and then enter the visual screening system for detection after passing through the third conveying mechanism. Through the feeding system, multiple wood chips are automatically conveyed at intervals in sequence, meeting the requirements for detection and screening using the visual intelligent screening system, improving the working efficiency and quality of wood chip detection and screening, and reducing the labor intensity of workers.

[0021] 2. The chip sieve of the present invention selects an automatic feeding system and an intelligent screening line. The first sliding plate is connected to an angle adjustment oil cylinder, the second sliding plate is connected to a rotation driving member, and the screening sliding plate is connected to an angle adjustment mechanism. The angles of the first sliding plate, the third sliding plate, and the screening sliding plate can be adjusted to meet the sliding conveying requirements of different types of chips, improving the applicability of the entire feeding system and screening line. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings forming a part of this specification are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0023] Figure 1 is a front view schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0024] Figure 2 is a top view of the connection between the receiving and conveying mechanism and the first sliding plate when there are two chip arranging and conveying mechanisms in Embodiment 1 of the present invention;

[0025] Figure 3 is a top view of the connection between the receiving and conveying mechanism and the first sliding plate when there are four chip arranging and conveying mechanisms in Embodiment 1 of the present invention;

[0026] Figure 4 is a front view schematic diagram of the visual intelligent screening system in Embodiment 2 of the present invention;

[0027] Figure 5 is a schematic diagram of the first sorting device or the second sorting device or the third sorting device in Embodiment 2 of the present invention;

[0028] Wherein, 1. receiving and conveying mechanism, 2. first sliding plate, 3. first conveying mechanism, 4. second sliding plate, 5. second conveying mechanism, 6. third sliding plate, 7. third conveying mechanism, 8. support plate, 9. angle adjustment oil cylinder, 10. hydraulic cylinder, 11. first walking vehicle, 12. second walking vehicle, 13. hydraulic cylinder, 14. baffle, 15. fourth conveying mechanism, 16. 3D laser profile sensor, 17. air blowing pump, 18. rotation driving motor, 19. screening sliding plate, 20. 3D laser profile sensor, 21. first sorting device, 22. first color mark sensor group, 23. second sorting device, 24. second color mark sensor group, 25. third sorting device, 26. vacuum suction cup, 27. angle adjustment motor, 28. counting sensor, 29. control system, 30. industrial computer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] Embodiment 1

[0030] This embodiment provides a chip sieve selection automatic feeding system, as Figures 1 - 3As shown, it includes a material receiving and conveying mechanism 1, which is used to receive the wood chips to be detected. The wood chips received by the material receiving and conveying mechanism 1 are a large number of randomly stacked wood chips.

[0031] In this embodiment, the material receiving and conveying mechanism 1 adopts a belt conveying mechanism, which can convey the wood chips.

[0032] The end of the material receiving and conveying mechanism 1 is connected to the feeding ends of a plurality of chip arranging and conveying mechanisms, and can send the received multiple wood chips into the plurality of chip arranging and conveying mechanisms. The number of the chip arranging and conveying mechanisms is two or four or more. Those skilled in the art can set its number according to actual needs and will not be described in detail here.

[0033] Along the conveying direction of the wood chips, the chip arranging and conveying mechanism includes a first sliding plate 2, a first conveying mechanism 3, a second sliding plate 4, a second conveying mechanism 5, a third sliding plate 6 and a third conveying mechanism 7 arranged in sequence.

[0034] The first sliding plate 2 is used to receive the wood chips conveyed by the material receiving and conveying mechanism 1, and make the wood chips slide down to the first conveying mechanism 3 under the action of gravity.

[0035] In this embodiment, the height of the feeding end of the first sliding plate 2 is higher than that of the discharging end so that the wood chips can slide down. It includes a bottom plate, and baffle plates are arranged on both sides of the bottom plate. The mutually close baffle plates of adjacent first sliding plates 2 are cross-fixed at the feeding end to form a V shape to shunt the wood chips, so that the wood chips on the material receiving and conveying mechanism 1 enter different first sliding plates 2.

[0036] In this embodiment, along the conveying direction of the wood chips, the width of the first sliding plate 2 gradually decreases, and the width of the discharging end of the first sliding plate 2 corresponds to the width of the wood chips, and its width is slightly larger than the width of the wood chips, so that the wood chips can only pass through the discharging end of the first sliding plate in the posture of being arranged along the conveying direction in the length direction, which plays a role in orienting the wood chips.

[0037] The wood chips passing through the first sliding plate 2 are single wood chips, and their length directions are arranged along the conveying direction, or multiple stacked wood chips, and the length directions of the stacked wood chips are arranged along the conveying direction.

[0038] Furthermore, in order to prevent the wood chips from being blocked during the sliding process on the first sliding plate 2, a vibration motor is installed on the bottom surface of the first sliding plate 2, and the vibration motor makes the first sliding plate 2 vibrate, ensuring the smooth sliding of the wood chips.

[0039] Further, in order to meet the sliding requirements of different wood chips, the angle of the first sliding plate 2 can be adjusted. Specifically, the discharging end of the first sliding plate 2 is rotatably connected to the support plate 8, the other end of the first sliding plate 2 is hinged to one end of the angle adjustment oil cylinder 9, the other end of the angle adjustment oil cylinder 9 is hinged to the support plate 8, and the telescopic movement of the piston rod of the angle adjustment oil cylinder 9 can drive the first sliding plate 2 to rotate, thereby adjusting the angle of the first sliding plate 2.

[0040] Further, in order to enable the first sliding plate 2 to be docked with the material receiving conveyor mechanism and the first conveyor mechanism at any angle and ensure the smooth conveyance of the wood chips, the support plate 8 is connected to the second lifting mechanism. In this embodiment, the second lifting mechanism adopts hydraulic cylinders 10 arranged at the front and rear ends of the support plate. The piston rod of the hydraulic cylinder 10 is connected to the support plate 8, and the cylinder body of the hydraulic cylinder 10 is fixed on the first walking vehicle 11. The first walking vehicle 11 can adopt an existing electric walking vehicle, and its specific structure will not be described in detail herein. Correspondingly, the material receiving conveyor mechanism 1 is installed on the second walking vehicle through the third lifting mechanism. In this embodiment, the third lifting mechanism adopts a hydraulic cylinder 13 installed on the second walking vehicle 12. The cylinder body of the hydraulic cylinder is connected to the second walking vehicle, and its piston rod is connected to the material receiving conveyor mechanism. The second walking vehicle 12 can adopt an existing electric walking vehicle, and its specific structure will not be described in detail herein.

[0041] In this embodiment, after the angle of the first sliding plate 2 is adjusted, first, the second lifting mechanism and the first walking vehicle 11 work together to make the discharging end of the first sliding plate 2 dock with the feeding end of the first conveyor mechanism 3, and then the second walking vehicle 12 and the third lifting mechanism work to make the material receiving conveyor mechanism 1 dock with the feeding end of the first sliding plate 2.

[0042] It should be noted that since the wood chips are light in weight, the vibration motor causes the first sliding plate 2 to generate slight vibrations, which can ensure that the wood chips are not blocked, and its vibrations will not affect the normal operation of the angle adjustment oil cylinder 9, the hydraulic cylinder 10, and the first walking vehicle 11.

[0043] In another embodiment, the middle position on the outer side of the first sliding plate 2 is connected to the output shaft of the rotation driving motor. The rotation driving motor is fixed on the support plate 8 through the motor base, and the support plate is connected to the second lifting mechanism.

[0044] The first conveyor mechanism 3 adopts a belt conveyor mechanism, the width of which matches the width of the wood chips, and is used to receive the wood chips sent by the first sliding plate 2 and further convey the wood chips.

[0045] The feeding end of the first conveying mechanism 3 is connected to the feeding end of the second sliding plate 4. The height of the feeding end of the second sliding plate 4 is higher than that of the discharging end, and the angle of the second sliding plate 4 is set to a relatively large angle so that any wood chips can slide down under the action of gravity. The width of the second sliding plate 4 matches the width of the wood chips, and baffles are provided on both sides thereof to prevent the wood chips from falling off the second sliding plate 4.

[0046] The discharging end of the second sliding plate 4 is connected to the feeding end of the second conveying mechanism 5 to receive the wood chips sent out by the second sliding plate 4.

[0047] In this embodiment, the second conveying mechanism 5 adopts a belt conveying mechanism, and its width matches the width of the wood chips.

[0048] A baffle 14 is provided above the feeding end of the second conveying mechanism 5. There is a set gap between the bottom end of the baffle 14 and the top surface of the second conveying mechanism 5, and this set gap only allows wood chips with a single thickness to pass through, so as to realize the spreading of the stacked wood chips.

[0049] Furthermore, the baffle 14 is connected to a first lifting mechanism, and the first lifting mechanism can lift the baffle 14 to realize the adjustment of the size of the set gap.

[0050] In this embodiment, the first lifting mechanism adopts a lead screw lifting mechanism located on both sides of the second conveying mechanism 5. The lead screw lifting mechanism can adopt the existing technology. The lifting parts of the lead screw lifting mechanisms on both sides are respectively connected to both ends of the baffle 14 to drive the baffle to lift.

[0051] A fourth conveying mechanism 15 is provided at a third set distance in front of the junction position between the discharging end of the first conveying mechanism 3 and the feeding end of the second sliding plate 4. The fourth conveying mechanism 15 adopts a belt conveying mechanism, and the top surface of the fourth conveying mechanism 15 is higher than the top surface of the first conveying mechanism 3 by a fourth set distance, which is convenient for the wood chips to fall. When the stacked wood chips pass through the gap between the feeding end of the fourth conveying mechanism 15 and the discharging end of the first conveying mechanism 3, they can be preliminarily spread. The wood chips located above enter the fourth conveying mechanism 15, and the wood chips located below fall along the second sliding plate 4.

[0052] The third set distance and the fourth set distance can be set according to actual needs and will not be described in detail here.

[0053] In this embodiment, the fourth conveying mechanism 15 adopts a belt conveying mechanism, and its discharging end is connected to the receiving conveying mechanism 1 to convey the wood chips to the receiving conveying mechanism 1.

[0054] Along the conveying direction of the particle board flakes, a 3D laser profile sensor 16 and a blowing pump 17 are provided on one side of the second conveying mechanism 5 downstream of the baffle 14. The 3D laser profile sensor 16 is located upstream of the blowing pump 17. The 3D laser profile sensor 16 is used to detect the particle board flakes passing through the gap between the baffle 14 and the second conveying mechanism 5. When there are still stacked particle board flakes, after the stacked particle board flakes move to the corresponding position of the blowing pump 17, the blowing pump 17 operates to blow away the stacked particle board flakes.

[0055] The 3D laser profile sensor 16 can use existing equipment, which has a laser emitting end and a receiving end, and can scan the side of the particle board flakes to identify the stacked particle board flakes.

[0056] The blowing pump 17 is located on one side of the second conveying mechanism 5. A fifth conveying mechanism is provided on the other side of the second conveying mechanism 5. The fifth conveying mechanism is arranged opposite to the blowing pump 17, and the particle board flakes blown away by the blowing pump 17 can fall onto the fifth conveying mechanism.

[0057] In this embodiment, the fifth conveying mechanism adopts a belt conveying mechanism. The discharging end of the fifth conveying mechanism is connected to the receiving conveying mechanism 1 to send the particle board flakes it conveys to the receiving conveying mechanism 1.

[0058] The width of the third sliding plate 6 matches the width of the particle board flakes. Flap plates are provided on both sides of the third sliding plate 6 to prevent the particle board flakes from falling off the third sliding plate 6.

[0059] The feeding end of the third sliding plate 6 is at a first set distance below the discharging end of the second conveying mechanism 5, and the discharging end is at a second set distance above the feeding end of the third conveying mechanism 7.

[0060] With this setting method, when the particle board flakes enter the third sliding plate 6 from the second conveying mechanism 5, they do not enter continuously, but enter at an interval of a set time, so that there is a certain gap between adjacent particle board flakes.

[0061] The first set distance and the second set distance can be set according to actual needs and will not be described in detail here.

[0062] Furthermore, the middle positions on both sides of the third sliding plate 6 are connected to a rotation driving member. The rotation driving member adopts a rotation driving motor 18. The rotation driving motor 18 is fixed on a bracket through a motor seat, and the bracket is fixed on the ground foundation. By the rotation driving motor 18, the angle of the third sliding plate 6 can be adjusted to meet the sliding conveying requirements of various particle board flakes.

[0063] In this embodiment, the relative positions of the second conveying mechanism 5 and the feeding end of the third sliding plate 6 need to meet the requirement that when the third sliding plate 6 is adjusted to any angle, the wood chips can fall from the second conveying mechanism 5 onto the third sliding plate 6. The relative positions of the discharging end of the third sliding plate 6 and the feeding end of the third conveying mechanism 7 need to meet the requirement that when the third sliding plate 6 is adjusted to any angle, the wood chips can fall from the third sliding plate 6 onto the third conveying mechanism 7.

[0064] The third conveying mechanism 7 adopts a belt conveying mechanism, and its width matches the width of the wood chips. The conveying speed of the third conveying mechanism is greater than that of the second conveying mechanism 5, and it is used to convey the wood chips to the visual screening system.

[0065] The working method of the feeding system in this embodiment is as follows:

[0066] Driven by the receiving and conveying mechanism 1, multiple wood chips enter different first sliding plates 2 separately and slide down on the first sliding plates 2. During the sliding process, since the width of the first sliding plate 2 gradually decreases and the width of its discharging end matches the width of the wood chips, after the wood chips are sent out from the first sliding plate 2, the length direction of the wood chips is set along the conveying direction, which plays a role in adjusting the orientation of the wood chips and realizes the directional arrangement of the wood chips. Then the wood chips enter the first conveying mechanism 3 for further conveying, and the first conveying mechanism 3 sends the wood chips to the second sliding plate 4, and the wood chips slide and are conveyed along the second sliding plate 4.

[0067] When the wood chips pass through the gap between the discharging end of the first conveying mechanism 3 and the feeding end of the fourth conveying mechanism 15, the stacked wood chips are initially spread out. Among the stacked wood chips, the upper wood chips enter the fourth conveying mechanism 15 and re-enter the receiving and conveying mechanism 1 through the fourth conveying mechanism 15, while the lower wood chips enter the second sliding plate 4 and slide down.

[0068] After passing through the second sliding plate 4, the wood chips enter the second conveying mechanism 5. When the wood chips pass through the gap between the baffle 14 and the second conveying mechanism 5, the stacked wood chips are further spread out. When the wood chips pass through the 3D laser profile sensor 16, the 3D laser profile sensor 16 detects whether there are still stacked wood chips. When stacked wood chips are detected, a signal is sent to the control system, and the control system controls the air blowing pump 17 to work. When the stacked wood chips move to the corresponding position of the air blowing pump 17, the air blowing pump 17 works to blow the stacked wood chips to the fifth conveying mechanism, and the fifth conveying mechanism re-conveys the wood chips to the receiving and conveying mechanism 1.

[0069] The second conveying mechanism 5 conveys the wood chips. The wood chips fall from the discharge end of the second conveying mechanism 5 onto the third sliding plate 6. Since the feed end of the third sliding plate 6 is located at a first set distance below the discharge end of the second conveying mechanism 5, the wood chips entering the third sliding plate 6 do not enter continuously but at regular intervals, achieving the conveyance of adjacent wood chips at regular intervals.

[0070] The wood chips sent out by the third sliding plate 6 enter the third conveying mechanism 7, and the third conveying mechanism 7 sends the wood chips into the visual screening system.

[0071] The automatic feeding system for screening wood chips in this embodiment realizes the arrangement and conveyance of multiple wood chips at regular intervals in sequence, meets the requirements of detection and screening using the visual intelligent screening system, improves the working efficiency and quality of wood chip detection and screening, and reduces the labor intensity of workers.

[0072] Embodiment 2

[0073] This embodiment provides an intelligent screening line for wood chips, including the automatic feeding system for screening wood chips described in Embodiment 1, and also includes a visual intelligent screening system. Among them, as Figure 4 shown, the visual intelligent screening system includes a screening sliding plate 19. The width of the screening sliding plate 19 matches the width of the wood chips, being slightly larger than the width of the wood chips. Limit plates are provided on both sides to prevent the wood chips from falling off the screening sliding plate 19 during the sliding process. The height of the feed end of the screening sliding plate 19 is higher than the height of the discharge end. The feed end of the screening sliding plate 19 is located at a set distance below the discharge end of the third conveying mechanism 7 to be able to receive the wood chips sent out by the third conveying mechanism 7.

[0074] The screening sliding plate 19 is made of a transparent plate. Preferably, it is made of a transparent glass plate. Along the sliding direction of the wood chips on the screening sliding plate 19, a 3D laser profile sensor 20, a first sorting device 21, a first color mark sensor group 22, a second sorting device 23, a third color mark sensor group 24, and a third sorting device 25 are sequentially arranged.

[0075] Among them, the 3D laser profile sensor 20 and the first color mark sensor group 22 are located above the screening sliding plate 19, and the second color mark sensor group 24 is located below the screening sliding plate 19.

[0076] Since the detection range of a single color mark sensor cannot cover the entire surface of the wood chip, both the first color mark sensor group 22 and the second color mark sensor group 24 are provided with multiple color mark sensors, so that the coverage ranges of the multiple color mark sensors cover the width direction of the entire surface of the wood chip.

[0077] As Figure 5As shown, the first sorting device 21, the second sorting device 23, and the third sorting device 25 all use robotic arms, preferably existing six-degree-of-freedom robotic arms. The specific structure thereof will not be described in detail herein. The end of the six-degree-of-freedom robotic arm is connected to a vacuum chuck 26, which can adsorb, fix, and release the wood chips.

[0078] In this embodiment, the 3D laser profile sensor 20, the first color mark sensor group 22, and the second color mark sensor group 24 are all installed on corresponding sensor brackets, and multiple sensor brackets are fixedly connected to the screening slide plate 19.

[0079] Furthermore, in order to meet the adjustment requirements for the distances between the 3D laser profile sensor 20, the first color mark sensor group 22, the second color mark sensor group 24, and the screening slide plate 19, the 3D laser profile sensor 20 is installed on the sensor bracket through a fourth lifting mechanism, the first color mark sensor group 22 is installed on the sensor bracket through a fourth lifting mechanism, and the second color mark sensor group 24 is installed on the sensor bracket through a fourth lifting mechanism.

[0080] In this embodiment, the fourth lifting mechanism uses an existing screw lifting mechanism, and the specific structure thereof will not be described in detail herein.

[0081] The three six-degree-of-freedom robotic arms are fixed to the robotic arm mounting base, and the robotic arm mounting base is fixed to the screening slide plate 19.

[0082] Furthermore, in order to meet the sliding requirements of different wood chips on the screening slide plate, the middle position on the side of the screening slide plate 19 is connected to an angle adjustment mechanism. The angle adjustment mechanism uses an angle adjustment motor 27, and the angle adjustment motor 27 is fixed on the motor base, and the motor base is fixed on the ground foundation.

[0083] Furthermore, along the conveying direction of the wood chips, a counting sensor 28 is arranged upstream of the 3D laser profile sensor 20. In this embodiment, the counting sensor 28 uses a photoelectric sensor or a laser ranging sensor, and those skilled in the art can set it according to actual needs. The counting sensor 28 is arranged above the screening slide plate 19 and installed on the sensor bracket, and the sensor bracket is fixedly connected to the screening slide plate 19.

[0084] The counting sensor 28, the 3D laser profile sensor 20, the first color mark sensor group 22, the second color mark sensor group 24, and the three sorting devices are all connected to the control system 29. The control system 29 is connected to the industrial computer 30. The counting sensor 28, the 3D laser profile sensor 20, the first color mark sensor group 22, and the second color mark sensor group 24 can transmit the detected information to the control system 29, and the control system 29 controls the three sorting devices to work for screening the wood chips.

[0085] In the intelligent screening line for wood chips of this embodiment, the wood chips slide down on the screening slide plate 19. When passing through the laser 3D intelligent sensor 20, the cracks on the wood chips are detected. After the detection is completed, they continue to slide down. The control system makes a judgment based on the detection results of the 3D laser profile sensor 20. The qualified wood chips continue to slide down. When encountering unqualified products, the first sorting device 21 is controlled to work. The first sorting device 21 grabs the unqualified products through the vacuum suction cups 26 and sends them away.

[0086] In this embodiment, after the 3D laser profile sensor scans the wood chips with laser, it can identify the width and length of the internal cracks of the wood chips, and further calculate the area of the cracks. At the same time, the 3D laser profile sensor can also identify the length and width of the whole wood chip, and calculate the area of the whole wood chip. Dividing the crack area by the area of the whole wood chip can obtain a value. When this value exceeds the set limit value, it is determined that this wood chip is unqualified, otherwise the wood chip is qualified. The set limit value can be determined according to the actual production situation and will not be described in detail here.

[0087] Specifically, the 3D laser profile sensor emits line laser. After the line laser is emitted from the emission port, it is reflected back to the reception port on the object. The line laser can identify the elevation information of the object, and thus can identify the crack width and the wood chip width. Set an appropriate sampling frequency for the 3D laser profile sensor. As the wood chips move on the screening slide plate, several crack widths and wood chip widths can be obtained. These crack information can generate two-dimensional grid matrix data of the cracks, and then the length and width of each crack of the wood chip can be obtained; similarly, the length and width of the whole wood chip can also be obtained. From the length information and width information of the cracks, the area of the cracks of the wood chip can be obtained. Similarly, the area of the whole wood chip can also be obtained. Dividing the crack area by the area of the wood chip can obtain a value, and this value can be used to judge whether the wood chip is a qualified product.

[0088] The wood chips continue to slide down and pass through the first color mark sensor group 22. The first color mark sensor group 22 detects the color of the upper surface of the wood chips. The qualified products continue to slide down. When encountering unqualified products, the control system 29 controls the second sorting device 23 to work, grabs the unqualified products and then sends them out. When the wood chips slide to the second color mark sensor group 24, the second color mark sensor group 24 detects the color of the lower surface of the wood chips. The qualified products continue to slide down, and the unqualified products are grabbed and sent away by the third sorting device 25.

[0089] In this embodiment, changes in temperature and humidity can cause significant blue staining and mildew in local areas of the particle flakes. The color mark sensor can distinguish the area of the blue-stained part and the area of the mildewed part of the particle flakes, as well as the area of the whole particle flake. Dividing the sum of the area of the blue-stained part and the area of the mildewed part by the area of the whole particle flake can obtain a value. When this value exceeds the set limit value, it is determined that this particle flake is unqualified. The set limit value is determined according to the actual production conditions and will not be described in detail here.

[0090] The color mark sensor can identify the color of the object to be detected. The single detection range of the color mark sensor is much smaller than that of the particle flake. By setting an appropriate sampling frequency for the color mark sensor, as the particle flake moves on the screening slide plate, the color mark sensor can first clearly identify the detection starting point of the particle flake to be detected and obtain several color mark detection results therefrom. As the detection progresses, the color mark sensor can also identify the detection end point of the particle flake to be detected. Since the detection width of the color mark sensor is very limited, the particle flake needs to pass through multiple color mark sensors to complete the final detection. The detection ranges of multiple color mark sensors cover the entire width of the particle flake. From the several color mark detection information obtained during the detection process, the blue-stained area, the mildewed area, and the area of the whole particle flake of the particle flake can be obtained. Dividing the sum of the blue-stained area and the mildewed area by the area of the whole particle flake can obtain a value, and this value can be used to determine whether the particle flake is a qualified product.

[0091] In some other embodiments, an industrial camera can also be used instead of the color mark sensor. The industrial camera captures an image of the particle flake, uses image recognition to identify the blue-stained part and the mildewed part, and obtains the ratio of the sum of the area of the blue-stained part and the area of the mildewed part to the area of the whole particle flake, and uses this ratio to determine whether the particle flake is a qualified product. The above technologies can adopt existing technologies and will not be further described in detail here.

[0092] In this embodiment, the particle flakes are detected by the visual intelligent screening system. Compared with manual detection, the work efficiency is improved, the labor intensity is reduced, and the screening accuracy is improved. At the same time, the staff does not need to perform manual detection beside the production line, ensuring the labor safety of the staff.

[0093] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An automatic feeding system for wood chip screening, characterized in that: It includes a material receiving and conveying mechanism, the discharging side of the material receiving and conveying mechanism is connected with the feeding side of a plurality of chip sorting and conveying mechanisms, and along the conveying direction of the chip pieces, the chip sorting and conveying mechanism includes a first lower slide plate, a first conveying mechanism, a second lower slide plate, a second conveying mechanism, a third lower slide plate and a third conveying mechanism which are sequentially arranged, and along the conveying direction of the chip pieces, the width of the first lower slide plate gradually decreases so that the width of its discharging side corresponds to the width of the chip pieces, the first lower slide plate includes a bottom plate and baffle plates are arranged on both sides of the bottom plate, the first lower slide plate is connected to a vibration motor so that the chip pieces can only pass through the discharging end of the first lower slide plate in a posture arranged along the conveying direction in the length direction, so as to orient the chip pieces; a baffle plate is arranged above the feeding end of the second conveying mechanism, and a set gap is provided between the bottom end of the baffle plate and the top surface of the second transmission mechanism so that only a single chip piece is allowed to pass through the gap between the baffle plate and the second conveying mechanism, and the feeding end of the third lower slide plate is located at a first set distance below the discharging end of the second conveying mechanism, and the discharging end is located at a second set distance above the feeding end of the third conveying mechanism; A fourth conveying mechanism is provided at a third set distance in front of the first conveying mechanism, and the top surface of the fourth conveying mechanism is higher than the top surface of the first conveying mechanism by a fourth set distance so as to preliminarily spread the stacked wood chips; when the stacked wood chips pass through the gap between the feeding end of the fourth conveying mechanism and the discharging end of the first conveying mechanism, the stacked wood chips can be preliminarily spread, the wood chips located at the upper part enter the fourth conveying mechanism, and the wood chips located at the lower part fall along the second lower slide plate; The end of the fourth conveying mechanism is connected to the material receiving conveying mechanism.

2. The automatic feeding system for screening wood chips according to claim 1, characterized in that: Along the conveying direction of the wood chips, a 3D laser profile sensor and an air pump are sequentially arranged on one side of the second conveying mechanism downstream of the baffle. The 3D laser profile sensor is used to detect the stacked wood chips so as to blow the stacked wood chips away through the air pump.

3. An automatic feeding system for screening wood chips as claimed in claim 2, characterized in that: A fifth conveying mechanism is arranged on the opposite side of the air pump to receive the wood chips blown away by the air pump, and the end of the fifth conveying mechanism is connected to the material receiving conveying mechanism.

4. The automatic feeding system for screening wood chips according to claim 1, characterized in that: The baffle is connected to the first lifting mechanism to adjust the distance between the bottom end of the baffle and the second conveying mechanism.

5. The automatic feeding system for screening wood chips according to claim 1, characterized in that: The discharge end of the first lower slide plate is hinged to the support plate, the other end of the first lower slide plate is hinged to one end of the angle adjustment cylinder, the other end of the angle adjustment cylinder is hinged to the support plate, the support plate is installed on the first traveling vehicle through the second lifting mechanism, and correspondingly, the material receiving and conveying mechanism is installed on the second traveling vehicle through the third lifting mechanism.

6. The automatic feeding system for screening wood chips according to claim 1, characterized in that: The center position of the third lower slide plate is connected to the rotation driving element to adjust the angle of the third lower slide plate.

7. A wood chip intelligent screening line, characterized in that: The invention comprises an automatic feeding system for screening wood chips as claimed in any one of claims 1 to 6, wherein the discharge end of the third conveying mechanism corresponds to the feed end of the visual intelligent screening system, and the visual screening intelligent selection system comprises a screening lower slide plate, which adopts a transparent plate, and is provided with a 3D laser profile sensor, a first sorting device, a first color mark sensor group, a second sorting device, a second color mark sensor group and a third sorting device in sequence along the conveying direction of the wood chips, wherein the 3D laser profile sensor and the first color mark sensor group are located above the screening lower slide plate, and the second color mark sensor group is located below the screening lower slide plate.

8. The intelligent wood chip screening line according to claim 7, characterized in that: The screening lower slide is connected to the angle adjustment mechanism, and the 3D laser profile sensor, the first sorting device, the first color mark sensor group, the second sorting device, the second color mark sensor group and the third sorting device are all connected to the screening lower slide through a bracket.

9. The intelligent shavings screening line according to claim 8, characterized in that: The 3D laser profile sensor, the first color mark sensor group, and the second color mark sensor group are all connected to the bracket through the fourth lifting mechanism.

10. The intelligent shavings screening line according to claim 7, characterized in that: The first sorting device and the second sorting device adopt a mechanical arm, and a vacuum suction cup is provided at the end of the mechanical arm.

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