A vibration recognition device for weed seeds

Abstract

This utility model relates to the field of vibrating screening technology, specifically to a vibrating identification device for weed seeds, including a vibrating screening mechanism, a conveying mechanism, and an identification mechanism. The identification mechanism is located above the conveying mechanism and is used for image recognition of the grain on the conveying mechanism. A material guide plate is connected between the vibrating screening mechanism and the conveying mechanism. The material guide plate is provided with several parallel guide strips to divide the grain into multiple evenly distributed material flows. The vibrating screening mechanism includes a base, a movable unit and an oscillating frame mounted on the base. The end of the oscillating frame is connected to a feed box. The oscillating frame is provided with a gap adjustment strip to adjust the gap between the feed box and the oscillating frame. This invention solves the technical problem that existing devices cannot form a uniformly distributed strip path for the grain on the conveyor belt, resulting in grain accumulation and difficulty in identification.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screening technology, specifically to a vibrating identification device for weed seeds. Background Technology

[0002] In the processing and quality inspection of grains (such as wheat and rice) after harvest, weed seeds mixed in are a serious impurity that affects the purity and quality of the grain. To achieve efficient sorting, automatic identification technology based on machine vision has been widely used. Image recognition technology typically uses high-definition cameras to capture images of grain flowing on a conveyor belt, and then uses image processing algorithms to identify and locate weed seeds. However, in practical applications, the accuracy of image recognition methods is greatly limited by the distribution of the material. Under traditional conveying methods, grain particles are often piled up in a disorderly manner, with multiple layers of particles overlapping and obscuring each other. Smaller weed seeds are easily buried in the lower layers or trapped in the gaps between larger grain particles, making it impossible for the camera to capture a complete image, resulting in a large number of missed detections. At the same time, densely packed particles will produce overlapping projections, forming complex background noise, interfering with the extraction of image features, and easily leading to misjudgments. In addition, the inability to form a strip distribution or an uneven distribution can also cause inconsistent lighting conditions, and some areas may affect the accuracy of color and shape recognition due to reflections or shadows. Although existing equipment may include rudimentary vibratory feeding devices, their function is mainly focused on material transfer rather than precision feeding, which is insufficient to achieve an optimal detection and distribution of grain.

[0003] Therefore, the inventors have proposed a weed seed vibration identification device to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a vibration identification device for weed seeds, in order to solve the technical problem that existing devices cannot form a uniform strip path for grains on the conveyor belt, resulting in grain accumulation and making identification difficult.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A vibratory identification device for weed seeds includes a vibratory screening mechanism, a conveying mechanism, and an identification mechanism. The identification mechanism is disposed above the conveying mechanism and is used to perform image recognition on the grains on the conveying mechanism. A material guide plate is connected between the vibrating screening mechanism and the conveying mechanism. The material guide plate is provided with several parallel guide strips to divide the grain into multiple evenly distributed material flows. The vibrating screening mechanism includes a base, a movable unit mounted on the base, and an oscillating frame. One end of the oscillating frame is connected to the material guide plate, and the other end of the oscillating frame is connected to a feed box. A gap adjustment strip is provided on the oscillating frame, which is used to adjust the gap between the feed box and the oscillating frame.

[0006] Grain enters the vibrating frame from the feed box. The gap between the feed box and the vibrating frame is adjusted by the gap adjustment strip to control the material thickness. The moving unit drives the vibrating frame to vibrate, so that the grain particles are evenly dispersed and impurities are initially separated during the screening process. The material guide plate divides the vibrated grain into multiple evenly distributed strip-shaped material flows through multiple parallel guide strips, effectively avoiding the problems of particle accumulation, multi-layer superposition, and burying of weed seeds in traditional conveying methods. The conveying mechanism stably conveys the strip-shaped material flows to the area below the identification mechanism. The identification mechanism uses a high-definition camera to collect images of the material flow. Combined with the screening function of the vibrating screen, it reduces background noise interference and improves the uniformity of illumination. Finally, the image processing algorithm accurately identifies and locates weed seeds, thereby solving the problems of missed detection and misjudgment caused by uneven material distribution in traditional equipment.

[0007] Furthermore, the active unit includes two support plates symmetrically fixed on the base, and each of the two support plates is provided with a plurality of guide holes; A horizontal slide and a vertical slide are provided between the two support plates; It also includes a driving component for driving the horizontal slide and the vertical slide to move.

[0008] Furthermore, the horizontal slide includes a horizontal mounting frame, a first guide rod, and a second guide rod. The first guide rod is symmetrically arranged on both sides of the horizontal mounting frame, and the first guide rod extends into the corresponding guide hole and is slidably connected to the guide hole. The first guide rod and the second guide rod are arranged perpendicular to each other.

[0009] Furthermore, the vertical slide block is provided with a plurality of second guide holes, and the second guide holes correspond one-to-one with the second guide rods; A drive hole is provided in the middle of the vertical slide, and the top of the vertical slide is connected to the oscillation frame; The driving component includes a first motor, which is mounted on one of the support plates. The output shaft of the first motor is coaxially connected to a disk, and a driving rod is eccentrically connected to the disk. The driving rod extends into the driving hole to drive the horizontal slide and the vertical slide to move.

[0010] Furthermore, the oscillating frame is provided with a number of sieving holes.

[0011] Furthermore, the gap adjustment strip is slidably mounted on the oscillation frame, and fastening bolts are provided on both sides of the oscillation frame for fixing the gap adjustment strip.

[0012] Furthermore, the conveying mechanism includes a base frame, a first frame, a second frame, and a conveyor belt. The first frame and the second frame are cross-hinged. One end of the first frame is hinged to the base frame, and the other end of the first frame is slidably connected to the conveyor belt. One end of the second frame is slidably connected to the base frame, and the other end of the second frame is slidably hinged to the conveyor belt.

[0013] Furthermore, a connecting strip is movably provided on the second frame, and a threaded hole is provided on the connecting strip. A screw is threadedly connected to the threaded hole, and a second motor is provided on the bottom frame. The output shaft of the second motor is coaxially connected to the screw.

[0014] Furthermore, the number of the guide strips is at least three.

[0015] Furthermore, the identification mechanism includes a mounting frame and an identification camera, the identification camera being mounted on the mounting frame, and the conveyor belt being located below the identification camera.

[0016] The beneficial effects of this utility model are: This invention achieves optimized fine processing and uniform distribution of grain particles through the coordinated design of a vibrating screening mechanism and a material guide plate. The screening hole size is between the diameter of weed seeds and grains, which can pre-screen small-sized weed seeds and fine impurities, directly reducing the image processing load in the subsequent recognition stage. The gap adjustment strip slides in conjunction with the oscillating frame, and the thickness control prevents material accumulation or flow obstruction, ensuring that the grain forms a uniform thin layer when it enters the oscillating frame. Multiple parallel guide strips separate the screened grain into independent strip-shaped material flows, effectively solving the problem of multi-layered particle stacking and weed seed burial in traditional conveying. This allows the recognition camera to clearly capture the complete shape of weed seeds in each material flow, and, together with the image algorithm of the recognition mechanism, achieves accurate positioning, improves the accuracy of weed seed recognition, and reduces missed detections.

[0017] Other advantages, objectives, and features of this application will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from practice of this application. The objectives and other advantages of this application may be realized and obtained through the detailed embodiments described below. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the weed seed vibration identification device of this utility model; Figure 2This is a schematic diagram of the vibrating sieving mechanism in the weed seed vibration identification device of this utility model from one direction. Figure 3 This is a schematic diagram of the vibrating sieving mechanism in the weed seed vibration identification device of this utility model from another direction; Figure 4 In the vibration identification device for weed seeds of this utility model Figure 3 Schematic diagram of Part A; Figure 5 This is a schematic diagram of the fabric guide plate in the weed seed vibration identification device of this utility model; Figure 6 This is a schematic diagram of the conveying mechanism in the weed seed vibration identification device of this utility model.

[0019] The components include: a vibrating screening mechanism 1, a base 11, a movable unit 12, a support plate 121, a horizontal mounting frame 1211, a first guide rod 1212, a second guide rod 1213, a vertical slide block 122, a drive hole 1221, a disc 123, a drive rod 124, an oscillating frame 13, a screening hole 131, a fastening bolt 132, a feed box 14, a gap adjustment strip 15, a conveying mechanism 2, a bottom frame 21, a first frame 22, a second frame 23, a conveyor belt 24, a connecting strip 25, a screw 26, a second motor 27, an identification mechanism 3, a mounting frame 31, an identification camera 32, a material guide plate 4, and a guide strip 41. Detailed Implementation

[0020] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.

[0021] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the mechanisms related to this utility model and are not drawn according to the actual number, shape and size of the mechanisms in the actual implementation. In the actual implementation, the form, quantity and proportion of each mechanism can be arbitrarily changed, and the layout of the mechanisms may also be more complex.

[0022] This embodiment proposes a weed seed vibration identification device, such as... Figures 1 to 6As shown, the system includes a vibrating screening mechanism 1, a conveying mechanism 2, and an identification mechanism 3. The identification mechanism 3 is located above the conveying mechanism 2 and is used to perform image recognition on the grain on the conveying mechanism 2. A material guide plate 4 is connected between the output end of the vibrating screening mechanism 1 and the input end of the conveying mechanism 2. The material guide plate 4 is provided with several parallel guide strips 41, which are used to divide the grain into multiple uniformly distributed material flows. There are at least three guide strips 41. By forming multiple independent material flows, it is convenient for the subsequent identification mechanism 3 to achieve uniform distribution and identification of grain particles.

[0023] like Figure 1 and Figure 2 As shown, the vibrating screening mechanism 1 includes a base 11, a movable unit 12 mounted on the base 11, and an oscillating frame 13. The right end of the oscillating frame 13 is connected to the material guide plate 4, and the left end of the oscillating frame 13 is connected to the feed box 14. Figure 3 and Figure 4 As shown, a gap adjustment strip 15 is provided on the oscillating frame 13. The gap adjustment strip 15 is used to adjust the gap between the feed box 14 and the oscillating frame 13. Grain enters the oscillating frame 13 from the feed box 14. The gap between the feed box 14 and the oscillating frame 13 is adjusted by the gap adjustment strip 15 to control the thickness of the grain entering the oscillating frame 13. The moving unit 12 drives the oscillating frame 13 to vibrate, so that the grain particles are evenly dispersed and impurities are initially separated during the screening process. The material guide plate 4 divides the vibrated grain into multiple evenly distributed strip-shaped material flows through multiple parallel guide strips 41, effectively avoiding grain accumulation, multi-layer superposition, and burial of weed seeds during the transportation process.

[0024] In a preferred embodiment, the identification mechanism 3 includes a mounting frame 31 and an identification camera 32. The identification camera 32 is mounted on the mounting frame 31, and the conveyor belt 24 is located below the identification camera 32. The identification mechanism 3 is also connected to grippers (not shown). The conveying mechanism 2 stably conveys the strip-shaped material flow to the area below the identification mechanism 3. The identification mechanism 3 acquires images of the material flow through the identification camera 32. Combined with the screening function of the vibrating screen, it reduces background noise interference and improves the uniformity of illumination. Finally, it accurately identifies and locates weed seeds through an image processing algorithm and removes the identified weed seeds by controlling the grippers. It should be noted that the identification mechanism 3's acquisition of images of the material flow through the identification camera 32, the accurate identification and location of weed seeds through an image processing algorithm, and the control of the grippers are existing technologies. The scope of protection does not involve the specific image recognition control process of the identification mechanism 3, and therefore, it will not be described in detail.

[0025] As a preferred embodiment, such as Figure 4As shown, the gap adjustment strip 15 is slidably mounted on the oscillating frame 13. Fastening bolts 132 are provided on both sides of the oscillating frame 13 to fix the gap adjustment strip 15. The gap adjustment strip 15, through its sliding installation and cooperation with the fastening bolts 132, allows for flexible adjustment and stable fixing of the gap between the oscillating frame 13 and the feed box 14. The sliding design allows operators to adjust the gap width according to the type of grain, particle size, and processing volume requirements. Sliding the gap adjustment strip 15 upwards increases the gap, while sliding it downwards decreases the gap, ensuring controllable grain thickness entering the oscillating frame 13. An excessively large gap may lead to grain accumulation, while an excessively small gap may hinder grain flow. After adjustment to the ideal position, the fastening bolts 132 lock the gap adjustment strip 15 onto the oscillating frame 13, preventing gap deviation caused by mechanical vibration during vibration. This also provides an ideal material state for the subsequent uniform distribution by the distribution guide plate 4, ensuring that grain particles form a uniform strip-shaped material flow on the conveyor belt 24, reducing the risk of weed seeds being buried due to accumulation.

[0026] As a preferred embodiment, such as Figure 1 and Figure 3 As shown, the oscillating frame 13 has several sieving holes 131. It should be noted that, in this embodiment, since the diameter of weed seeds is smaller than that of grain particles, the size of the sieving holes 131 is designed to be between the diameter of weed seeds and grain particles. This allows weed seeds with a diameter smaller than the sieving holes 131 and some small impurities to be screened out during vibration, directly reducing the number of impurities that need to be processed in the subsequent identification stage, and reducing the computational load and risk of misjudgment of the image recognition algorithm. Grain particles with a diameter larger than the sieving holes 131 and some large impurities (such as insects, stones, etc.) are retained on the oscillating frame 13 and continue to be conveyed, and are identified by the subsequent identification mechanism 3, which removes the impurities by gripping them.

[0027] As a preferred embodiment, such as Figure 2 and Figure 3 As shown, the movable unit 12 includes two support plates 121 symmetrically fixed on the base 11, and each of the two support plates 121 has several guide holes; a horizontal slide and a vertical slide 122 are arranged between the two support plates 121; it also includes a driving member, which is used to drive the horizontal slide and the vertical slide 122 to move.

[0028] Furthermore, the horizontal slide includes a horizontal mounting frame 1211, a first guide rod 1212, and a second guide rod 1213. The first guide rod 1212 is symmetrically arranged on the left and right sides of the horizontal mounting frame 1211, and the first guide rod 1212 extends into the corresponding guide hole and slides in connection with the guide hole. The first guide rod 1212 and the second guide rod 1213 are arranged perpendicular to each other. A plurality of second guide holes are provided on the vertical slide 122, and the second guide holes correspond one-to-one with the second guide rods 1213. The vertical slide 122 can move up and down along the vertical direction of the horizontal mounting frame 1211. A drive hole 1221 is provided in the middle of the vertical slide 122, and the top of the vertical slide 122 is connected to the oscillation frame 13.

[0029] The driving component includes a first motor (not shown), which is mounted on one of the support plates 121 or on the base 11. The output shaft of the first motor is coaxially connected to a disk 123, and a drive rod 124 is eccentrically connected to the disk 123. The drive rod 124 is always in contact with the inner wall of the drive hole 1221 and extends into the drive hole 1221 to drive the horizontal slide and the vertical slide 122 to move. The first motor drives the disk 123 to rotate, and the drive rod 124 eccentrically connected to the first motor moves in a circular motion accordingly. The drive rod 124 is inserted into the drive hole 1221 of the vertical slide 122, converting the rotational motion into the reciprocating movement of the vertical slide 122. The vertical slide 122 is slidably connected to the second guide rod 1213 of the horizontal slide through the second guide hole. Its vertical movement drives the horizontal slide to move synchronously, while the first guide rod 1212 of the horizontal slide is embedded in the guide hole of the support plate 121 to form a horizontal constraint, causing the horizontal slide to slide axially along the guide hole. The seat and vertical slide 122 form a composite motion trajectory under the drive of the drive rod 124. The vertical slide 122 dominates the vertical vibration, while the horizontal slide transmits the horizontal component force through the vertical guide rod. Finally, the vibration energy is transmitted to the grain particles through the oscillating frame 13, causing the grain to move and vibrate simultaneously. The gap adjustment bar 15 and the gap control function of the oscillating frame 13 work together to vibrate the screen, enabling the grain to achieve uniform and controllable thickness spreading during vibration. This provides an ideal material state for the subsequent strip-shaped diversion of the material distribution plate 4, solving the identification defect problem caused by grain accumulation in traditional devices.

[0030] In a preferred embodiment, the conveying mechanism 2 includes a base frame 21, a first frame 22, a second frame 23, and a conveyor belt 24. The first frame 22 and the second frame 23 are hinged together. The bottom end of the first frame 22 is hinged to the base frame 21, and the top end of the first frame 22 is slidably connected to the conveyor belt 24. The bottom end of the second frame 23 is slidably connected to the base frame 21, and the top end of the second frame 23 is slidably hinged to the conveyor belt 24. A connecting strip 25 is movably disposed on the second frame 23. The connecting strip 25 has a threaded hole, and a screw 26 is threadedly connected to the threaded hole. A second motor 27 is disposed on the base frame 21, and the output shaft of the second motor 27 is connected to the screw 26. The conveyor belt 24 uses existing components.

[0031] In this embodiment, the second motor 27 drives the screw 26 to rotate, causing the connecting bar 25 to move axially along the screw 26. The connecting bar 25 pulls one end of the second frame 23 to slide on the bottom frame 21, while the other end of the second frame 23 is slidably hinged to the conveyor belt 24 to form a linkage. When the second frame 23 is driven to move, the cross hinge point drives the first frame 22 to move synchronously, realizing the overall height adjustment of the conveyor belt 24.

[0032] Of course, in one possible implementation, the second motor 27 and screw 26 can be replaced with a cylinder, with one end of the cylinder connected to the conveyor belt 24 and the other end of the cylinder connected to the base frame 21, so as to realize the height adjustment of the conveyor belt 24.

[0033] This application achieves optimized processing and uniform distribution of grain particles through the coordinated design of the vibrating screening mechanism 1 and the cloth guide plate 4. The size of the screening hole 131 is between the diameter of weed seeds and grain, which can pre-screen small-sized weed seeds and fine impurities, directly reducing the image processing load in the subsequent recognition stage. The gap adjustment strip 15 slides with the oscillating frame 13, and the thickness control avoids material accumulation or flow obstruction, ensuring that the grain forms a uniform thin layer when it enters the oscillating frame 13. Multiple parallel guide strips 41 separate the screened grain into independent strip material flows, avoiding the problem of multiple layers of grain particles and weed seeds being buried during transportation. This allows the recognition camera 32 to clearly capture the complete shape of weed seeds in each material flow, which, together with the recognition mechanism 3, improves the accuracy of weed seed recognition and reduces missed detections.

[0034] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model.

Claims

1. A weed seed vibration recognition apparatus, characterized by, The utility model relates to a kind of grain screening device, including: Vibrating screening mechanism (1), conveying mechanism (2) and identification mechanism (3), the identification mechanism (3) is set above the conveying mechanism (2), for image recognition to grain on conveying mechanism (2); Cloth guide vane (4) is connected between the vibrating screening mechanism (1) and the conveying mechanism (2), a plurality of parallelly arranged guide strips (41) are provided on the cloth guide vane (4), for separating grain into multiple evenly distributed material flows; The vibrating screening mechanism (1) includes a base (11), a movable unit (12) disposed on the base (11), and an oscillation frame (13), one end of the oscillation frame (13) is connected with the cloth guide vane (4), the other end of the oscillation frame (13) is connected with a feeding box (14), a gap adjusting strip (15) is disposed on the oscillation frame (13), and the gap adjusting strip (15) is used for adjusting the gap between the feeding box (14) and the oscillation frame (13).

2. The weed seed vibration recognition apparatus according to claim 1, characterized by: The movable unit (12) includes two support plates (121) symmetrically fixed on the base, a plurality of guide holes are formed in each of the two support plates (121); A horizontal slide and a vertical slide (122) are disposed between the two support plates (121); Further comprising a driving member, the driving member is used to drive the horizontal slide and the vertical slide (122) to move.

3. The weed seed vibration recognition apparatus according to claim 2, characterized by: The horizontal slide includes a horizontal mounting frame (1211), a first guide rod (1212) and a second guide rod (1213), the first guide rod (1212) is symmetrically disposed on both sides of the horizontal mounting frame (1211), and the first guide rod (1212) extends into the corresponding guide hole and is in sliding connection with the guide hole; the first guide rod (1212) and the second guide rod (1213) are perpendicular to each other.

4. The weed seed vibration recognition apparatus according to claim 3, characterized by: A plurality of second guide holes are formed in the vertical slide (122), and the second guide holes correspond one-to-one to the second guide rods (1213); A driving hole (1221) is formed in the middle position of the vertical slide (122); The driving member includes a first motor, the first motor is installed on one of the support plates (121), a disc (123) is coaxially connected to the output shaft of the first motor, a driving rod (124) is eccentrically connected to the disc (123), and the driving rod (124) extends into the driving hole (1221) to drive the horizontal slide and the vertical slide (122) to move.

5. The weed seed vibration recognition apparatus according to claim 4, characterized by: A plurality of screening holes (131) are formed in the oscillation frame (13).

6. The weed seed vibration recognition apparatus according to claim 5, characterized by: The gap adjusting strip (15) is slidingly installed on the oscillation frame (13), fastening bolts (132) are arranged on both sides of the oscillation frame (13), and the fastening bolts (132) are used for fixing the gap adjusting strip (15).

7. The weed seed vibration recognition apparatus according to claim 1, characterized by: The conveying mechanism (2) comprises a bottom frame (21), a first frame body (22), a second frame body (23) and a conveying belt (24), the first frame body (22) and the second frame body (23) are cross-hinged, one end of the first frame body (22) is hinged with the bottom frame (21), the other end of the first frame body (22) is slidingly connected with the conveying belt (24), one end of the second frame body (23) is slidingly connected with the bottom frame (21), and the other end of the second frame body (23) is slidingly hinged with the conveying belt (24).

8. The weed seed vibration recognition apparatus according to claim 7, characterized by: A connecting strip (25) is movably arranged on the second frame body (23), a threaded hole is formed in the connecting strip (25), a screw rod (26) is threadedly connected with the threaded hole, a second motor (27) is arranged on the bottom frame (21), and an output shaft of the second motor (27) is coaxially connected with the screw rod (26).

9. The weed seed vibration recognition apparatus according to claim 6, characterized by: The number of the flow guide strips (41) is at least three.

10. The weed seed vibration recognition apparatus of claim 7, wherein: The identification mechanism (3) comprises a mounting frame (31) and an identification camera (32), the identification camera (32) is installed on the mounting frame (31), and the conveying belt (24) is located below the identification camera (32).

Images