A machine vision method and device for quarantine of undersize material of inbound bulk grain

Abstract

The present invention relates to the field of visual screening and quarantine technology, and discloses a machine vision device for quarantining undersize objects of inbound bulk grain, comprising a box body, a feeding shell provided on the top of the box body, slide grooves provided on both sides of the box body, a screen mesh slidably connected to the inner wall of one slide groove, and a discharge shell fixedly provided on the inner wall of the other slide groove, and a limiting groove provided on the inner wall of the box body. By providing the box body, screen mesh, positioning frame, industrial camera, macro industrial lens, lens protective cover, and flat light source structure, the industrial camera can solve the problem of unclear shooting of moving targets by using a high-brightness stroboscopic light source during the process of photographing samples, and the macro industrial lens can solve the problem that the industrial camera cannot take clear photos of small fields of view and small targets. At the same time, the fully automated screening and photographic equipment are used to replace the traditional manual quarantine method, which has more efficient detection efficiency and detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of visual screening and quarantine, and in particular to a machine vision method and device for quarantine of undersized objects of inbound bulk grain. Background Art

[0002] Customs is a work unit that controls and implements epidemic prevention measures for overseas trade goods. It allows overseas items to flow into the local environment while ensuring that overseas diseases and viruses do not affect the local biological environment. Therefore, it is necessary to screen and quarantine the goods.

[0003] The existing customs quarantine method for undersize materials is to manually screen the samples after sampling to screen out the oversize and undersize materials, and then manually perform sensory inspection to pick out quarantine suspects. Although this method can perform epidemic prevention inspections on samples, since it is a manual inspection, not only the inspection cycle is long and the labor cost is high, but also manual inspection is more likely to miss errors than mechanical and automated inspection operations, thus reducing the practicality of traditional quarantine methods. For this reason, we propose a machine vision method and device for quarantine of undersize materials of inbound bulk grain. Summary of the Invention

[0004] The present invention provides a machine vision method and device for quarantine of undersize objects of inbound bulk grain, which has the advantages of strong practicality, high detection efficiency and accuracy, and solves the problems raised by the above-mentioned background technology.

[0005] The present invention provides the following technical solution: a machine vision device for quarantine of sieve-down objects of inbound bulk grain, comprising a box body, a feeding shell being provided on the top of the box body, slide grooves being provided on both sides of the box body, a screen being slidably connected to the inner wall of one slide groove, and a discharging shell being fixedly installed on the inner wall of the other slide groove, a limiting groove being provided on the inner wall of the limiting groove, a limiting rod being fixedly installed, a spring and a slider being sleeved on the outer edge of the limiting rod, a motor 1 being fixedly provided on the top of the box body, a rotating wheel 1 being fixedly sleeved on the output shaft of the motor 1, a transmission belt being rotatably connected to the middle part of the rotating wheel 1, a driven wheel being rotatably connected to the end part of the transmission belt, a fixed plate being fixedly provided on the outer wall of the box body, and a cam being rotatably connected to the bottom of the fixed plate Wheel, the bottom of the cam is rotatably connected to a fixed rod, the top of the box is also fixedly equipped with motor 2, the output shaft of motor 2 is fixedly sleeved with turntable 2, the bottom of the driven wheel and turntable 2 are both fixedly equipped with a rotating rod, a positioning frame is placed on the right side of the box, the outer wall of the positioning frame is provided with a strobe controller, the outer wall of the positioning frame is fixedly equipped with an industrial camera, a conveyor belt is provided just below the industrial camera, a packaging inkjet printer is provided at the end of the conveyor belt, a macro industrial lens is fixedly equipped on the lens of the industrial camera, the end of the macro industrial lens is fixedly connected to a mounting plate, the bottom of the mounting plate is fixedly equipped with a plane light source, the outer wall of the plane light source is sleeved with a lens protective cover, and the bottom inner wall of the box is fixedly equipped with a baffle.

[0006] As a preferred technical solution of the present invention, a through hole is provided on the outer wall of the fixed plate, a connecting rod is rotatably connected to the inner wall of the through hole, and the cam is fixedly connected to the driven wheel through the connecting rod, the end of the fixed rod is fixedly assembled with the left outer wall of the screen, a circular hole is provided in the middle of the planar light source, an explosion-proof box is fixedly assembled on the outer wall of the positioning frame, the inner wall of the explosion-proof box is fixedly assembled with the outer wall of the strobe controller, and the strobe controller is electrically connected to the planar light source through a dedicated wire.

[0007] As a preferred technical solution of the present invention, the angle between the top of the baffle and the inner wall of the bottom of the box is 30°, the outer wall of the slider is fixedly assembled with the outer wall of the screen, there are two sliders, and the two sliders are respectively slidably connected to the inner wall of a limiting groove, one end of the spring overlaps the inner wall of the limiting groove, and the other end of the spring overlaps the outer wall of the slider.

[0008] As a preferred technical solution of the present invention, the outer wall of the rotating rod is fixedly equipped with a stirring bar made of natural rubber, the bottom of the driven wheel is rotatably connected to the top of the fixed plate, the bottom of the second wheel is rotatably connected to the top of the box, and the driven wheel is connected to the first wheel through a transmission belt.

[0009] As a preferred technical solution of the present invention, a mounting groove is provided on the top of the box body, and the inner wall of the mounting groove is fixedly assembled with the outer wall of the feeding shell, the strobe controller is electrically connected to the planar light source, and a material trough is also provided on the outer wall of the box body, and a sealing plate is inserted into the inner wall of the material trough, and the sealing plate is located 10 cm above the screen.

[0010] As a preferred technical solution of the present invention, the positioning frame is made of galvanized metal, and the resolution of the industrial camera is 2448x2048.

[0011] As a preferred technical solution of the present invention, a feeding rod is passed through the inner wall of the discharge shell, and the end of the feeding rod is located 3 cm above the conveyor belt.

[0012] As a preferred technical solution of the present invention, when the axis of the cam and the center point of the top of the box are located on the same straight line, both ends of the screen are located outside the box.

[0013] A method for using a machine vision device for quarantine of undersize material of inbound bulk grain comprises the following steps:

[0014] S1: First, after the user assembles the device, he can put the material into the box through the feeding shell. At this time, the material will accumulate on the screen. Then the user can use motor 1 and motor 2 to drive the runner 1 and runner 2 to rotate respectively, so that the stirring bar can break up the adhered material and ensure the screening effect of the screen on the material. At the same time, the transmission belt will drive the driven wheel, so that the driven wheel drives the connecting rod and the cam to rotate synchronously. After the rotation, the cam will pull the screen and compress the spring through the slider. After the cam rotates one circle, the screen will reset, so that the screen can screen the material with high-frequency vibration, thereby improving the screening effect of the device on the material.

[0015] S2: After the screening operation is completed, the fallen materials will slide along the inclined surface formed by the baffle into the discharge shell. Under the guiding action of the discharge shell, the samples will pass through the feed rod and fall onto the conveyor belt. Since the distance between the feed rod and the conveyor belt is small, the samples will not accumulate when the conveyor belt is operating, and will not be separated from the conveyor belt due to the reaction force generated by the drop. Therefore, the user can use the conveyor belt to transport the samples.

[0016] S3: During the conveying process, the positioning frame fixes the industrial camera and the industrial camera has an adjustable focal length, so that the industrial camera can perform high-definition photography of the samples on the conveyor belt through a macro industrial lens. At the same time, the user needs to remove the lens protective cover and then use the strobe controller to control the plane light source to provide lighting for the industrial camera's photography operation in a high-frequency stroboscopic light source mode to ensure that the image after shooting will not have low brightness. After photography, the sample will fall into the packaging inkjet printer, and finally the packaging inkjet printer will print the batch number on the packaging box, which is convenient for the user to recycle the sample. This device improves the photography effect of the industrial camera and uses the cooperation of the screening device, the conveying device, the photographic device and the packaging device to improve the user's detection efficiency and detection accuracy of the sample.

[0017] The present invention has the following beneficial effects:

[0018] 1. This machine vision method and device for quarantine of undersize grain inbound bulk grain utilizes a housing, screen, positioning frame, industrial camera, macro industrial lens, lens protective cover, and planar light source structure. This allows the industrial camera to utilize a high-brightness stroboscopic light source to address the issue of unclear images of moving targets during sample photography. The macro industrial lens addresses the industrial camera's inability to capture clear images of small fields of view or small objects. Furthermore, fully automated screening and photography equipment replace traditional manual quarantine methods, resulting in more efficient and accurate inspections.

[0019] 2. This machine vision method and device for quarantine of inbound bulk grain sieve underflows uses a packaging inkjet printer, driven wheel, transmission belt, motor 2, and runner 2 to break up the material before screening. The transmission belt's transmission effect also allows the cam to rotate, driving the screen to vibrate at a high frequency. This improves the screen's screening effect on the material and filters out as many small quarantined objects as possible. The bulk grain remains on the belt without being obstructed, ensuring a high target detection rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 A in the middle is an enlarged structural diagram;

[0022] Figure 3 This is a schematic diagram of the positioning frame structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the industrial camera structure of the present invention;

[0024] Figure 5This is a schematic diagram of the side sectional structure of the box body of the present invention;

[0025] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0026] Figure 7 This is a schematic diagram of the rotating rod structure of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the strobe controller of the present invention.

[0028] In the figure: 1. Box body; 2. Screen; 3. Feeding shell; 4. Positioning frame; 5. Industrial camera; 6. Macro industrial lens; 7. Mounting plate; 8. Strobe controller; 9. Fixing rod; 10. Motor 1; 11. Rotary wheel 1; 12. Transmission belt; 13. Driven pulley; 14. Cam; 15. Fixing plate; 16. Motor 2; 17. Rotary wheel 2; 18. Discharging shell; 19. Conveyor belt; 20. Plane light source; 21. Lens protection cover; 22. Slide; 23. Packing inkjet printer; 24. Limiting slot; 25. Limiting rod; 26. Spring; 27. Rotating rod; 28. Baffle; 29. ​​Slider. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1-8A machine vision device for quarantine of undersize grains of inbound bulk grains comprises a box body 1, a feeding shell 3 is provided on the top of the box body 1, chutes 22 are provided on both sides of the box body 1, a screen 2 is slidably connected to the inner wall of one chute 22, a discharge shell 18 is fixedly installed on the inner wall of the other chute 22, a limiting groove 24 is provided on the inner wall of the limiting groove 24, a limiting rod 25 is fixedly installed on the inner wall of the limiting groove 24, a spring 26 and a slider 29 are respectively sleeved on the outer edge of the limiting rod 25, and the top of the box body 1 is fixed. It is equipped with a motor 10, the output shaft of the motor 10 is fixedly sleeved with a runner 11, the middle of the runner 11 is rollingly connected with a transmission belt 12, and the end of the transmission belt 12 is rollingly connected with a driven wheel 13. The outer wall of the box body 1 is fixedly equipped with a fixed plate 15, the bottom of the fixed plate 15 is rotatably connected to a cam 14, and the bottom of the cam 14 is rotatably connected to a fixed rod 9. The top of the box body 1 is also fixedly equipped with a motor 2 16, the output shaft of the motor 2 16 is fixedly sleeved with a runner 2 17, and the driven wheel 13 and the bottom of the second rotating wheel 17 are both fixedly equipped with a rotating rod 27, a positioning frame 4 is placed on the right side of the box body 1, and a strobe controller 8 is provided on the outer wall of the positioning frame 4, and an industrial camera 5 is fixedly installed on the outer wall of the positioning frame 4. A conveyor belt 19 is provided just below the industrial camera 5, and a packaging inkjet printer 23 is provided at the end of the conveyor belt 19. A macro industrial lens 6 is fixedly installed on the lens of the industrial camera 5, and a mounting plate 7 is fixedly connected to the end of the macro industrial lens 6. A plane light source 20 is fixedly installed on the bottom of the mounting plate 7, and a lens protective cover 21 is sleeved on the outer wall of the plane light source 20. A baffle 28 is fixedly installed on the inner wall of the bottom of the box body 1. Through the structure of the lens protective cover 21, the user can use the lens protective cover 21 to cover the macro industrial lens 6 when the device is not in operation, thereby reducing the erosion of the macro industrial lens 6 by external dust and impurities, thereby ensuring the smoothness of the optical lens on the macro industrial lens 6, and further improving the photographic effect of the macro industrial lens 6 on the sample.

[0031] In a preferred embodiment, a through hole is provided on the outer wall of the fixed plate 15, and the inner wall of the through hole is rotatably connected to a connecting rod, and the cam 14 is fixedly connected to the driven wheel 13 through the connecting rod, and the end of the fixed rod 9 is fixedly assembled with the left outer wall of the screen 2, and a circular hole is provided in the middle of the planar light source 20. The outer wall of the positioning frame 4 is fixedly assembled with an explosion-proof box, and the inner wall of the explosion-proof box is fixedly assembled with the outer wall of the strobe controller 8, and the strobe controller 8 is electrically connected to the planar light source 20 through a dedicated wire. The through hole can ensure that the driven wheel 13 uses the connecting rod to drive the cam 14 to rotate synchronously when rotating, thereby achieving a transmission effect, which can not only realize the material scattering operation, but also allow the screen 2 to vibrate, thereby improving the screening effect and improving the energy utilization rate of the device.

[0032] In a preferred embodiment, the angle between the top of the baffle 28 and the inner wall of the bottom of the box body 1 is 30°, the outer wall of the slider 29 is fixedly assembled with the outer wall of the screen 2, the number of sliders 29 is two, and the two sliders 29 are respectively slidably connected to the inner wall of a limit groove 24, one end of the spring 26 overlaps the inner wall of the limit groove 24, and the other end of the spring 26 overlaps the outer wall of the slider 29. The baffle 28 can guide the sample into the discharge shell 18 after the screened sample falls, thereby ensuring that the sample can fall on the conveyor belt 19 for transportation under the collection and feeding action of the discharge shell 18, thereby improving the precision matching of each accessory in the device.

[0033] In a preferred embodiment, the outer wall of the rotating rod 27 is fixedly equipped with a stirring bar made of natural rubber, the bottom of the driven wheel 13 is rotatably connected to the top of the fixed plate 15, the bottom of the second wheel 17 is rotatably connected to the top of the box body 1, and the driven wheel 13 is connected to the first wheel 11 through the transmission belt 12. Natural rubber has the characteristics of toughness and elasticity, so that the stirring bar will not damage the material during the breaking operation, thereby ensuring the integrity of the sample.

[0034] In a preferred embodiment, a mounting groove is provided on the top of the box body 1, and the inner wall of the mounting groove is fixedly assembled with the outer wall of the feeding shell 3, the strobe controller 8 is electrically connected to the plane light source 20, and a material trough is also provided on the outer wall of the box body 1, and a sealing plate is inserted into the inner wall of the material trough, and the sealing plate is located 10 cm above the screen 2. The mounting groove can facilitate the user to install the feeding shell 3 on the top of the box body 1, so that the user can perform feeding operations, and the sealing plate can facilitate the user to remove the material remaining on the top of the screen 2 after the equipment is running, so that the user can maintain the equipment conveniently, further improving the practicality of the device.

[0035] In a preferred embodiment, the uniform speed of the conveyor belt 19 allows the sample to be photographed more evenly by the industrial camera 5 , and a 1 mm-sized grass seed occupies about 120 pixels after imaging, and can carry more feature information.

[0036] In a preferred embodiment, the positioning frame 4 is made of galvanized metal, and the resolution of the industrial camera 5 is 2448 x 2048. Galvanized metal is low-cost and hard, which reduces the production cost of the device while ensuring the stability of the industrial camera 5 after installation.

[0037] In a preferred embodiment, a feeding rod passes through the inner wall of the discharge shell 18, and the end of the feeding rod is located 3 cm above the conveyor belt 19. The position of the end of the feeding rod can ensure that the sample cannot exceed the cross-section of the conveyor belt 19 when it falls, thereby improving the conveyor belt 19's sample reception effect.

[0038] In a preferred embodiment, when the axis of the cam 14 and the center point of the top of the box body 1 are located on the same straight line, both ends of the screen 2 are located outside the box body 1. When the cam 14 rotates with the cooperation of the driven wheel 13 and the connecting rod, the screen 2 and the slider 29 are driven by the fixed rod 9 to apply pressure to the spring 26, so that after the cam 14 is reset, the screen 2 can move quickly, producing a high-frequency vibration effect, thereby improving the screening effect of the screen 2 on the material.

[0039] A method for using a machine vision device for quarantine of undersize material of inbound bulk grain comprises the following steps:

[0040] S1: First, after the user assembles the device, the material can be put into the box body 1 through the feeding shell 3. At this time, the material will accumulate on the screen 2. Then the user can respectively drive the runner 11 and the runner 2 17 to rotate through the motor 1 10 and the motor 2 16, so that the stirring bar can break up the bonded materials and ensure the screening effect of the screen 2 on the material. At the same time, the transmission belt 12 will transmit the driven wheel 13, so that the driven wheel 13 drives the connecting rod and the cam 14 to rotate synchronously. After the rotation, the cam 14 will pull the screen 2 and compress the spring 26 through the slider 29. After the cam 14 rotates one circle, the screen 2 will reset, so that the screen 2 can screen the material with high-frequency vibration, thereby improving the screening effect of the device on the material.

[0041] S2: After the screening operation is completed, the fallen materials will slide along the inclined surface formed by the baffle 28 into the discharge housing 18. Under the guiding action of the discharge housing 18, the samples will pass through the feed rod and fall onto the conveyor belt 19. Since the distance between the feed rod and the conveyor belt 19 is small, the samples cannot form an accumulation when the conveyor belt 19 is in operation, and they cannot escape from the conveyor belt 19 due to the reaction force generated by falling. Therefore, the user can use the conveyor belt 19 to transport the samples.

[0042] S3: During the transportation process, the fixing effect of the positioning frame 4 on the industrial camera 5 and the adjustable focal length effect of the industrial camera 5 are utilized to enable the industrial camera 5 to perform high-definition photography of the samples on the conveyor belt 19 through the macro industrial lens 6. At the same time, the user needs to remove the lens protective cover 21, and then use the strobe controller 8 to control the plane light source 20 to perform a high-frequency stroboscopic light source to provide lighting for the photography operation of the industrial camera 5, to ensure that the image after photography will not have a low brightness. After photography, the sample will fall into the packaging inkjet printer 23, and finally the packaging inkjet printer 23 will print the batch number on the packaging box, so that the user can recover the sample. This device improves the photography effect of the industrial camera 5, and uses the cooperation of the screening device, the conveying device, the photographic device and the packaging device to improve the user's detection efficiency and detection accuracy of the sample.

[0043] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A machine vision device for quarantine of undersize of inbound bulk grain, comprising a housing (1), characterized in that: The top of the box body (1) is provided with a feeding shell (3), and both sides of the box body (1) are provided with a chute (22), the inner wall of one of the chute (22) is slidably connected with a screen (2), and the inner wall of the other chute (22) is fixedly equipped with a discharge shell (18), and the inner wall of the box body (1) is provided with a limiting groove (24), and the inner wall of the limiting groove (24) is fixedly equipped with a limiting rod (25), and the outer edge of the limiting rod (25) is respectively sleeved with a spring (26) and a slider (2 9), a motor (10) is fixedly mounted on the top of the housing (1), a rotating wheel (11) is fixedly sleeved on the output shaft of the motor (10), a transmission belt (12) is rollingly connected to the middle of the rotating wheel (11), and a driven wheel (13) is rollingly connected to the end of the transmission belt (12), and a fixed plate (15) is fixedly mounted on the outer wall of the housing (1), and a cam (14) is rotatably connected to the bottom of the fixed plate (15), and the bottom of the cam (14) is rotatably connected to A fixing rod (9) is provided. The top of the box (1) is also fixedly equipped with a second motor (16). The output shaft of the second motor (16) is fixedly sleeved with a second rotating wheel (17). The bottoms of the driven wheel (13) and the second rotating wheel (17) are both fixedly equipped with a rotating rod (27). A positioning frame (4) is placed on the right side of the box (1). A strobe controller (8) is provided on the outer wall of the positioning frame (4). An industrial camera (5) is fixedly equipped on the outer wall of the positioning frame (4). The industrial camera (5) A conveyor belt (19) is provided directly below the conveyor belt (19), a packaging inkjet printer (23) is provided at the end of the conveyor belt (19), a macro industrial lens (6) is fixedly mounted on the lens of the industrial camera (5), a mounting plate (7) is fixedly connected to the end of the macro industrial lens (6), a plane light source (20) is fixedly mounted on the bottom of the mounting plate (7), a lens protective cover (21) is sleeved on the outer wall of the plane light source (20), and a baffle (28) is fixedly mounted on the inner wall of the bottom of the box body (1); The outer wall of the fixing plate (15) is provided with a through hole, the inner wall of the through hole is rotatably connected to a connecting rod, and the cam (14) is fixedly connected to the driven wheel (13) through the connecting rod, the end of the fixing rod (9) is fixedly assembled with the left outer wall of the screen (2), the middle part of the planar light source (20) is provided with a circular hole, the outer wall of the positioning frame (4) is fixedly assembled with an explosion-proof box, the inner wall of the explosion-proof box is fixedly assembled with the outer wall of the strobe controller (8), and the strobe controller (8) is electrically connected to the planar light source (20) through a dedicated wire; The outer wall of the rotating rod (27) is fixedly equipped with a stirring bar made of natural rubber, the bottom of the driven wheel (13) is rotatably connected to the top of the fixed plate (15), the bottom of the second rotating wheel (17) is rotatably connected to the top of the box (1), and the driven wheel (13) is connected to the first rotating wheel (11) through a transmission belt (12); A feeding rod is passed through the inner wall of the discharge shell (18), and the end of the feeding rod is located 3 cm above the conveyor belt (19).

2. The machine vision device for quarantine of undersize grain inbound bulk grain according to claim 1, characterized in that: The angle between the top of the baffle (28) and the inner wall of the bottom of the box (1) is 30 degrees. The outer wall of the slider (29) is fixedly assembled with the outer wall of the screen (2). There are two sliders (29), and the two sliders (29) are respectively slidably connected to the inner wall of a limiting groove (24). One end of the spring (26) overlaps the inner wall of the limiting groove (24), and the other end of the spring (26) overlaps the outer wall of the slider (29).

3. The machine vision device for quarantine of undersize inbound bulk grain according to claim 2, characterized in that: The top of the box (1) is provided with a mounting groove, and the inner wall of the mounting groove is fixedly assembled with the outer wall of the feeding shell (3). The strobe controller (8) is electrically connected to the plane light source (20). The outer wall of the box (1) is also provided with a material trough, and the inner wall of the material trough is plugged with a sealing plate, and the sealing plate is located 10 cm above the screen (2).

4. The machine vision device for quarantine of undersize inbound bulk grain according to claim 1, characterized in that: The positioning frame (4) is made of galvanized metal, and the resolution of the industrial camera (5) is 2448x2048.

5. The machine vision device for quarantine of undersize inbound bulk grain according to claim 1, characterized in that: When the axis of the cam (14) and the center point of the top of the box (1) are located on the same straight line, both ends of the screen (2) are located outside the box (1).

6. A method for using a machine vision device for quarantine of undersize inbound bulk grain according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1: First, after the user assembles the device, the material can be put into the box (1) through the feeding shell (3). At this time, the material will accumulate on the screen (2). Then, the user can drive the first wheel (11) and the second wheel (17) to rotate respectively through the motor (10) and the motor (16), so that the stirring bar can break up the adhered material and ensure the screening effect of the screen (2) on the material. At the same time, the transmission belt (12) will transmit the driven wheel (13), so that the driven wheel (13) drives the connecting rod and the cam (14) to rotate synchronously. After the rotation, the cam (14) will pull the screen (2) and compress the spring (26) through the slider (29). After the cam (14) rotates one circle, the screen (2) will be reset, so that the screen (2) can screen the material with high-frequency vibration, thereby improving the screening effect of the device on the material; S2: After the screening operation is completed, the fallen materials will slide along the inclined surface formed by the baffle (28) into the discharge shell (18), and under the guiding action of the discharge shell (18), the samples will pass through the feeding rod and fall onto the conveyor belt (19). Since the distance between the feeding rod and the conveyor belt (19) is small, the samples cannot form an accumulation when the conveyor belt (19) is in operation, and at the same time, they cannot be separated from the conveyor belt (19) due to the reaction force generated by the falling. Therefore, the user can use the conveyor belt (19) to transport the samples; S3: During the conveying process, the fixing effect of the positioning frame (4) on the industrial camera (5) and the adjustable focal length effect of the industrial camera (5) are utilized to enable the industrial camera (5) to perform high-definition photography of the samples on the conveyor belt (19) through the macro industrial lens (6). At the same time, the user needs to remove the lens protective cover (21) and then use the strobe controller (8) to control the plane light source (20) to perform high-frequency stroboscopic light source to provide lighting for the photography operation of the industrial camera (5), ensuring that the image after photography will not produce a low brightness. After photography, the sample will fall into the packaging inkjet printer (23), and finally the packaging inkjet printer (23) will perform packaging and print batch number operations respectively, so that the user can easily recycle the sample.

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