Intelligent screening device based on machine vision and pepper screening system

Abstract

The invention provides an intelligent screening device based on machine vision and a pepper screening system, and belongs to the technical field of screening. Comprising a feeding mechanism, a visual mechanism, an air supply mechanism, a nozzle and a processor. The feeding mechanism is used for conveying object materials. The visual mechanism is used for obtaining image data of the object materials conveyed by the feeding mechanism. The air supply mechanism is communicated with the nozzle, and the nozzle is arranged at a feeding channel of the feeding mechanism. The processor is used for judging whether the object material has defects according to the image data. And if the object material is damaged, the processor controls the air supply mechanism to supply air to the nozzle, so that the defective object material is blown out from the feeding channel of the feeding mechanism by using the nozzle. The fine screening capacity of materials with partial defects can be effectively improved, and the screening effect on the materials is remarkably improved.

Description

Technical Field

[0001] This application relates to the field of screening technology, and more specifically, to an intelligent screening device and chili pepper screening system based on machine vision. Background Technology

[0002] While existing screening devices can perform basic screening operations, they lack the ability to identify materials with partial defects. This results in a number of defective parts remaining in the screened materials, requiring further screening and removal of these defective parts. Summary of the Invention

[0003] The first objective of this application is to provide a machine vision-based intelligent screening device that can effectively improve the screening capability of materials with partial defects, and significantly enhance the screening effect of materials.

[0004] The second objective of this application is to provide a chili pepper screening system that can effectively improve the screening capability for chili peppers with partial defects, thereby significantly enhancing the screening effect of chili peppers.

[0005] The embodiments of this application are implemented as follows:

[0006] A machine vision-based intelligent sorting device includes: a feeding mechanism, a vision mechanism, an air supply mechanism, a nozzle, and a processor.

[0007] The feeding mechanism is used to transport the target material.

[0008] Vision mechanisms are used to acquire image data of the materials being transported by the feeding mechanism.

[0009] The air supply mechanism is connected to the nozzle, which is located in the feeding channel of the feeding mechanism.

[0010] The processor determines whether the material is defective based on image data. If the material is defective, the processor controls the air supply mechanism to supply air to the nozzle, so that the defective material is blown out of the feeding channel of the feeding mechanism.

[0011] Furthermore, the feeding channel of the feeding mechanism is equipped with an observation section, the color of which is different from the color of other parts of the feeding channel.

[0012] The vision mechanism is set up corresponding to the observation section and is used to acquire image data of the object material in the observation section.

[0013] The processor is used to determine the object material located in the observation segment based on the background color corresponding to the color of the observation segment in the image data, and to determine whether the object material located in the observation segment is damaged based on the image data.

[0014] Furthermore, the nozzle includes: a tubular body, a rotating shaft, a control arm, and an adjustment assembly.

[0015] The internal space of the tubular body has a rectangular cross-section. The tubular body has an inner top wall and an inner bottom wall that are arranged opposite each other, as well as a first inner side wall and a second inner side wall that are arranged opposite each other.

[0016] The inlet end of the tubular main body is connected to the gas supply mechanism.

[0017] The control arm is fixedly connected to the rotating shaft and arranged radially along the rotating shaft, which is rotatably installed in the internal space of the tubular body. The two ends of the rotating shaft are respectively fitted to the inner top wall and the inner bottom wall, and the side walls of the rotating shaft are embedded in the first inner side wall or the second inner side wall.

[0018] The control arm is simultaneously in contact with both the inner top wall and the inner bottom wall.

[0019] The rotating shaft / control arm is driven by the adjustment assembly.

[0020] If the material is defective, the processor is also used to determine the span of the defective material in the length direction of the feeding channel based on the image data, and control the adjustment component to drive the rotating shaft / control arm so that the flow width at the outlet end of the tubular body matches the span.

[0021] Furthermore, the end of the tubular body furthest from its outlet is a closed structure, and the inlet of the tubular body is located on the side wall of the end furthest from its outlet.

[0022] The adjustment components include: a drive and a lever.

[0023] The control rod is located inside the tubular body and extends along its length, passing through the end wall of the tubular body away from its outlet end. Along the length of the tubular body, the control rod slidably engages with the tubular body, forming a sliding seal between the control rod and the end wall of the tubular body. The control rod is driven by a actuator.

[0024] The control arm has a hollow structure, and an opening is provided on the side wall of the outlet end of the control arm away from the tubular body, which is connected to its internal space.

[0025] A stop bar is fixedly installed in the internal space of the control arm, and the stop bar extends along the length of the control arm.

[0026] The control lever has an extension section at one end near the control arm, which extends through an opening into the control arm. A fitting is provided at the end of the extension section, which engages with the side of the stop bar furthest from the opening.

[0027] The shaft is equipped with a torsion spring. Under normal conditions, the torsion spring drives the shaft to rotate so that the flow width at the outlet end of the tubular body reaches its maximum.

[0028] The processor controls the driver to drive the control lever toward the inlet end of the tubular body, so that the mating part pushes the control arm to swing toward the side where the inlet end of the tubular body is located, thereby reducing the flow width at the outlet end of the tubular body to match the span.

[0029] Furthermore, a column is fixedly connected to the side of the mating component away from the extension section, and the column extends along the length direction of the extension section.

[0030] A mating cavity is provided on the side of the mating component away from the column, and the mating cavity extends along the length of the column and into the column.

[0031] A piston slides within the mating cavity. An elastic element abuts against the piston at the inner end wall of the mating cavity away from the mating part. A stop rod is fixedly connected to the end of the piston away from the elastic element, and the stop rod abuts against the stop bar.

[0032] The end wall of the column away from the mating part is provided with an input pipe and an output pipe that communicate with the mating cavity. Both the input pipe and the output pipe are equipped with a unidirectional structure. The input pipe is used to communicate with the lubricant storage mechanism, and the outlet end of the output pipe is located at the contact point between the rotating shaft and the tubular body.

[0033] The torsion spring provides a greater torque than the elastic element provides, so that in its natural state, the mating part fits against the stop bar and the plug rod is fully pushed into the mating cavity.

[0034] Furthermore, both ends of the rotating shaft are coaxially fixedly connected to extension shafts, the diameter of which is smaller than that of the rotating shaft.

[0035] Both the inner top wall and the inner bottom wall are provided with mating grooves for engaging with the extension shaft.

[0036] The shaft has an axial hole inside, which extends through to the end face of the extension shaft.

[0037] A first drainage groove is formed on the end face of the extension shaft, and a second drainage groove is formed on the side of the extension shaft. The first drainage groove is arranged radially along the extension shaft, with one end of the first drainage groove communicating with the axial hole and the other end communicating with the second drainage groove.

[0038] The side wall of the rotating shaft is provided with a filling pipe that communicates with the axial hole, and the filling pipe is connected to the output pipe.

[0039] Furthermore, an annular groove is provided on the end face of the rotating shaft, and the annular groove is arranged around the extension shaft. The second drainage groove is connected to the annular groove.

[0040] The rotating shaft has an axial groove on the side surface that is in contact with the first inner wall or the second inner wall, and the annular groove is connected to the axial groove.

[0041] Furthermore, a groove is provided on the inner bottom wall of the outlet end of the tubular body. The groove is arranged along the width direction of the inner bottom wall and is located on the side of the control arm away from the control rod.

[0042] A slider is slidably fitted inside the groove, and a partition is fixedly connected to the slider. The partition is set perpendicular to the inner bottom wall and perpendicular to the groove.

[0043] An auxiliary lens is mounted on the side of the diaphragm away from the central axis of the tubular body, and the auxiliary lens is set towards the observation section.

[0044] The partition has a through hole that is perpendicular to both the slide groove and the inner bottom wall. A slide rod slides within the through hole, with one end of the slide rod near the control arm extending to the end of the control arm furthest from the rotating shaft and hinged to the outer surface of the control arm. The axis of rotation of the slide rod relative to the control arm is parallel to the axis of rotation of the rotating shaft. The distance between the two partitions is the same as the flow width between the two control arms.

[0045] The processor is also used to determine whether the nozzle is aligned with the defective material based on the auxiliary lens. When the nozzle is aligned with the defective material, the processor controls the air supply mechanism to supply air to the nozzle so that the defective material is blown out of the feeding channel of the feeding mechanism.

[0046] A chili pepper screening system includes the aforementioned intelligent screening device.

[0047] Furthermore, the feeding mechanism is a vibratory feeder.

[0048] The beneficial effects of the technical solutions in this application include:

[0049] The intelligent screening device based on machine vision provided in this application embodiment automatically judges whether the object material is defective through image data. If the object material is determined to be defective, the processor controls the air supply mechanism to supply air to the nozzle so that the defective object material is blown out of the feeding channel of the feeding mechanism by the nozzle, thereby removing the defective object material.

[0050] Overall, the machine vision-based intelligent screening device provided in this application embodiment can effectively improve the screening capability for materials with partial defects, and significantly improve the screening effect of materials.

[0051] The chili pepper screening system provided in this application embodiment can effectively improve the screening capability for chili peppers with partial defects, and significantly improve the screening effect of chili peppers. Attached Figure Description

[0052] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 A schematic diagram of the overall structure of the intelligent screening device based on machine vision provided in the embodiments of this application;

[0054] Figure 2 This is a schematic diagram of the nozzle structure;

[0055] Figure 3 This is a schematic diagram of the nozzle structure from another perspective;

[0056] Figure 4 A schematic diagram of the nozzle structure (relative to) Figure 2 (Reduces flow width)

[0057] Figure 5 A schematic diagram of the span;

[0058] Figure 6 This is a schematic diagram of the control arm.

[0059] Figure 7 A schematic diagram of the fit between the stop bar and the mating parts (when the mating parts are in contact with the stop bar);

[0060] Figure 8 A schematic diagram of the fit between the stop bar and the mating part (when the mating part is separated from the stop bar);

[0061] Figure 9 This is a schematic diagram showing the fit between the rotating shaft and the extension shaft;

[0062] Figure 10 This is a diagram illustrating the setup of an auxiliary camera.

[0063] Figure 11 for Figure 10 A magnified view of region A in the middle.

[0064] Explanation of reference numerals in the attached figures:

[0065] Feeding mechanism 100; observation section 110; nozzle 200; tubular body 210; inner top wall 211; inner bottom wall 212; first inner side wall 213; second inner side wall 214; chute 220; slider 230; partition 240; auxiliary lens 250; slide rod 260; rotating shaft 300; axial hole 310; filling pipe 320; annular groove 330; axial groove 340; extension shaft 400; first drainage groove 410; second drainage groove 420; control arm 500; opening 510; stop bar 520; control rod 600; extension section 610; mating part 620; column 630; mating cavity 640; expansion section 641; reduction section 642; piston 643; elastic element 644; stop rod 645; stop block 646; input pipe 650; output pipe 660; span L. Detailed Implementation

[0066] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0067] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0068] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0069] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0070] Furthermore, the terms "vertical" and "parallel" do not mean that the parts must be absolutely vertical or parallel, but can be slightly tilted.

[0071] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0072] The technical solutions of this application will be described by way of example through some embodiments below.

[0073] See Figure 1 This application provides a machine vision-based intelligent sorting device, which includes: a feeding mechanism 100, a vision mechanism (not shown in the figure), an air supply mechanism (not shown in the figure), a nozzle 200, and a processor (not shown in the figure).

[0074] The feeding mechanism 100 is used to transport the target material.

[0075] The vision mechanism is used to acquire image data of the object material conveyed by the feeding mechanism 100.

[0076] The air supply mechanism is connected to the nozzle 200 and is used to supply compressed air to the nozzle 200.

[0077] The nozzle 200 is located at the feeding channel of the feeding mechanism 100.

[0078] The processor is used to determine whether the object material is damaged based on the image data.

[0079] The processor can utilize a machine learning model to identify defective materials, but is not limited to this. Optionally, the model can be trained using images of qualified materials (materials without defects). After training, the model can automatically determine whether the material has defects based on the image data. Automatic identification using machine learning models is existing technology and will not be elaborated upon in this application.

[0080] If it is determined that the material is defective, the processor controls the air supply mechanism to supply air to the nozzle 200, so that the defective material is blown out of the feeding channel of the feeding mechanism 100 by the nozzle 200, thereby removing the defective material.

[0081] Overall, the machine vision-based intelligent screening device provided in this application embodiment can effectively improve the screening capability for materials with partial defects, and significantly improve the screening effect of materials.

[0082] In this embodiment, in order to improve the accuracy of image data analysis, the feeding channel of the feeding mechanism 100 is provided with an observation section 110. The color of the observation section 110 is different from the color of other parts of the feeding channel, including but not limited to: painting the observation section 110 in a different color than other parts of the feeding channel.

[0083] The vision mechanism is set up corresponding to the observation section 110 and is used to acquire image data of the object material in the observation section 110.

[0084] When the processor analyzes the image data, it determines the image area of ​​the observation segment 110 in the image data based on the color of the observation segment 110. That is, the part of the image data whose background color is the color of the observation segment 110 is the image area of ​​the observation segment 110. In other words, when the background color of the object material is the color of the observation segment 110, it means that the object material is located in the observation segment 110. The processor only analyzes the object material that enters the observation segment 110 to determine whether it has defects.

[0085] This design avoids accidental duplicate identification of objects and also prevents the identification of objects in other locations, greatly improving identification accuracy and reducing the processor's processing load.

[0086] Furthermore, please combine Figures 2-3 The nozzle 200 includes: a tubular body 210, a rotating shaft 300, a control arm 500, and an adjustment assembly.

[0087] The tubular body 210 is a straight tube, and the cross-section of its internal space is rectangular. The tubular body 210 has an inner top wall 211 and an inner bottom wall 212 arranged opposite to each other, as well as a first inner side wall 213 and a second inner side wall 214 arranged opposite to each other. The inner top wall 211 and the inner bottom wall 212 are arranged in parallel and spaced apart, and the first inner side wall 213 and the second inner side wall 214 are arranged in parallel and spaced apart.

[0088] The inlet end of the tubular body 210 is connected to the gas supply mechanism, and the outlet end of the tubular body 210 is located close to and facing the observation section 110 of the feeding mechanism 100.

[0089] The control arm 500 is fixedly connected to the rotating shaft 300 and arranged radially along the rotating shaft 300. The rotating shaft 300 is rotatably installed in the internal space of the tubular body 210.

[0090] The two ends of the rotating shaft 300 are respectively fitted to the inner top wall 211 and the inner bottom wall 212, and the rotating shaft 300 is set perpendicular to the inner top wall 211 and the inner bottom wall 212. The side wall of the rotating shaft 300 is embedded in the first inner side wall 213 or the second inner side wall 214.

[0091] In this embodiment, there are two rotating shafts 300, which are respectively disposed on both sides of the tubular body 210. One rotating shaft 300 is attached to the first inner sidewall 213, and the outer sidewall portion of this rotating shaft 300 is embedded in the first inner sidewall 213. The other rotating shaft 300 is attached to the second inner sidewall 214, and the outer sidewall portion of this rotating shaft 300 is embedded in the second inner sidewall 214. Both rotating shafts 300 are located at the outlet end of the tubular body 210.

[0092] Each rotating shaft 300 is equipped with a corresponding control arm 500.

[0093] The control arm 500 is simultaneously in contact with the inner top wall 211 and the inner bottom wall 212.

[0094] The rotating shaft 300 or control arm 500 is driven by an adjusting assembly, which drives the rotating shaft 300 and control arm 500 to rotate, thereby changing the flow width at the outlet end of the tubular body 210, such as... Figure 4 As shown. Since the control arm 500 can restrict the airflow within the tubular body 210, at the outlet end of the tubular body 210, the airflow can only leave the tubular body 210 through the gap between the ends of the two control arms 500, which limits the width of the airflow phase blown toward the target material.

[0095] In this embodiment, the vision mechanism may be a lens, but is not limited to this. The orientation of the vision component may be perpendicular to the observation segment 110.

[0096] If the material being processed is damaged, the processor further determines the span L of the damaged material along the length of the feeding channel based on the image data. In this application, the span L refers to the length of the area covered by the material along the length of the feeding channel, such as... Figure 5 As shown.

[0097] When the nozzle 200 blows the defective material out of the feeding channel, the processor is also used to control the adjustment component to drive the rotating shaft 300 and the control arm 500 to rotate, so that the flow width at the outlet end of the tubular body 210 is adapted to the span L of the defective material, that is, to adapt the distance between the ends of the two control arms 500 to the span L of the defective material.

[0098] The flow width at the outlet end of the tubular body 210 can be controlled to be equal to the span L of the defective object material, or the flow width at the outlet end of the tubular body 210 can be controlled to be less than the span L of the defective object material. For example, the flow width at the outlet end of the tubular body 210 can be controlled to be between 70% and 100% of the span L of the defective object material, and is not limited to this.

[0099] When the nozzle 200 blows out the defective material, the vision mechanism can be used to determine whether the nozzle 200 is aligned with the defective material. When aligned, the processor controls the air supply mechanism to supply air, and the nozzle 200 can use the airflow to blow out the defective material.

[0100] With this design, the width of the airflow blown out by the nozzle 200 is matched with the span L of the defective object material, which makes it easier to successfully blow out the defective object material and avoid blowing the defective object material off-center due to the airflow width being too narrow, thus reducing the probability of blowing failure.

[0101] In this embodiment, please refer to Figures 2-6 The end of the tubular body 210 away from its outlet is a closed structure, and the inlet of the tubular body 210 is opened on the side wall of the end away from its outlet.

[0102] The adjustment components include: a driver (not shown in the figure) and a control lever 600.

[0103] A control rod 600 is disposed within the tubular body 210 and arranged along the length of the tubular body 210. The control rod 600 is coaxially arranged with the tubular body 210 and passes through the end wall of the tubular body 210 away from its outlet end. Along the length of the tubular body 210, the control rod 600 is slidably fitted with the tubular body 210, and a sliding seal is formed between the control rod 600 and the end wall of the tubular body 210. The end of the control rod 600 located outside the tubular body 210 is driven by a driver.

[0104] The control arm 500 has a hollow structure, and an opening 510 communicating with its internal space is provided on the side wall of the outlet end of the control arm 500 away from the tubular body 210.

[0105] A stop bar 520 is fixedly installed in the internal space of the control arm 500. The stop bar 520 is located near the opening 510 and extends along the length of the control arm 500.

[0106] The control lever 600 has an extension 610 at one end near the control arm 500, and each control arm 500 is provided with one extension 610. The extension 610 extends into the control arm 500 through the opening 510.

[0107] The end of the extension 610 is provided with a mating part 620, which fits against the side of the stop strip 520 away from the opening 510.

[0108] The rotating shaft 300 is equipped with a torsion spring (not shown in the figure). In its natural state, the torsion spring drives the rotating shaft 300 to rotate. For the control arm 500 located on the first inner wall 213, the torsion spring drives the control arm 500 to rotate towards the first inner wall 213 on the side near the outlet end of the tubular body 210. For the control arm 500 located on the second inner wall 214, the torsion spring drives the control arm 500 to rotate towards the second inner wall 214 on the side near the outlet end of the tubular body 210. In other words, the torque provided by the torsion spring is used to maximize the flow width at the outlet end of the tubular body 210.

[0109] In this embodiment, the inner bottom wall 212 and inner top wall 211 of the tubular body 210 are arranged parallel to the observation section 110.

[0110] The processor controls the driver to drive the control lever 600 toward the inlet end of the tubular body 210, so that the mating part 620 pushes the control arm 500 toward the side where the inlet end of the tubular body 210 is located by pushing the stop bar 520, thereby bringing the ends of the two control arms 500 closer together, thereby reducing the flow width of the outlet end of the tubular body 210 to match the span L.

[0111] Furthermore, please combine Figures 7-8 A column 630 is fixedly connected to the side of the mating part 620 away from the extension section 610, and the column 630 extends along the length direction of the extension section 610.

[0112] The mating part 620 has a mating cavity 640 on the side surface away from the column 630. The mating cavity 640 extends along the length of the column 630 and extends into the column 630.

[0113] A piston 643 is slidably fitted inside the mating cavity 640. An elastic element 644 abuts against the piston 643 between the inner end wall of the mating cavity 640 away from the mating part 620 and the piston 643. A stopper rod 645 is fixedly connected to the end of the piston 643 away from the elastic element 644. The stopper rod 645 extends to the opening of the mating cavity 640 and abuts against the stop bar 520.

[0114] In this embodiment, the mating cavity 640 includes an expanding section 641 and a converging section 642. The converging section 642 is located on the side of the expanding section 641 away from the opening of the mating cavity 640, and the expanding section 641 extends to the opening of the mating cavity 640.

[0115] The elastic element 644 is located in the narrowed section 642, and the elastic element 644 is a spring.

[0116] The piston 643 is fitted into the expansion section 641, and the outer diameter of the piston rod 645 is smaller than the inner diameter of the expansion section 641. A stop 646 is provided at the end of the expansion section 641 away from the reduction section 642 to prevent the piston 643 from dislodging from the mating cavity 640.

[0117] The end wall of the column 630 away from the mating part 620 is provided with an input pipe 650 and an output pipe 660 communicating with the mating cavity 640. Both the input pipe 650 and the output pipe 660 are equipped with a unidirectional structure (not shown in the figure). Due to the presence of the unidirectional structure, the input pipe 650 can only input lubricant into the mating cavity 640, and the output pipe 660 can only output lubricant from the mating cavity 640.

[0118] The input pipe 650 is used to communicate with the lubricant storage mechanism (not shown in the figure), and the outlet end of the output pipe 660 is provided at the contact part between the rotating shaft 300 and the tubular body 210 to apply lubricant to the contact part between the rotating shaft 300 and the tubular body 210 to complete the lubrication.

[0119] The torsion spring provides a greater torque than the elastic force provided by the elastic element 644, so that in the natural state, the mating element 620 fits against the stop bar 520, and the plug rod 645 is fully pushed into the mating cavity 640.

[0120] When the mating part 620 is in contact with the stop strip 520, the plug rod 645 is fully pushed into the mating cavity 640. In this state, the piston 643 is in contact with the end wall of the expanding section 641 near the reducing section 642. Figure 7 As shown.

[0121] When the shaft 300 is in a normal lubrication state, it can rotate smoothly. When the control lever 600 pulls the control arm 500 to reduce the flow width, or when the control lever 600 resets and the control arm 500 resets under the action of the torsion spring to increase the flow width, the shaft 300 can rotate smoothly. Under the action of the torsion spring, the stop bar 520 always remains in contact with the mating part 620, the plug rod 645 always remains stable, and the piston 643 always fits against the end wall of the expansion section 641 near the reduction section 642. The lubricant will not enter the mating cavity 640, nor will it leave the mating cavity 640.

[0122] When lubrication of the rotating shaft 300 is problematic, such as insufficient lubricant, the shaft 300 is prone to jamming or becoming stuck during rotation. When the control lever 600 pulls the control arm 500 to reduce the flow width, the shaft 300 can still rotate even with poor lubrication because the control lever 600 can continuously provide tension. However, when the control lever 600 resets, causing the control arm 500 to reset under the action of the torsion spring and increasing the flow width, the control arm 500 can only reset under the elastic force of the torsion spring. When lubrication is insufficient, the rotation speed of the control arm 500 during reset is likely to be lower than the speed under normal lubrication. In this case, the rotation speed of the control arm 500 will not keep up with the movement speed of the mating part 620, resulting in a gap between the mating part 620 and the stop bar 520.

[0123] Once a gap appears, under the action of the elastic element 644, the piston 643 moves, and the stop rod 645 is pushed out until the end of the stop rod 645 is in contact with the stop strip 520. During this process, the lubricant in the lubricant storage mechanism is drawn into the mating cavity 640 through the inlet pipe 650, such as... Figure 8 As shown.

[0124] After the control arm 500 is successfully and completely reset under the action of the torsion spring, the stop bar 520 will re-fit with the mating part 620. The stop bar 520 can then push the stop rod 645 back into the mating cavity 640, so that the piston 643 re-fits with the end wall of the expansion section 641 near the reduction section 642. This allows the lubricant in the mating cavity 640 to be output through the output pipe 660 to the contact part between the rotating shaft 300 and the tubular body 210, thus completing the lubrication.

[0125] In this way, the lubricant can be automatically replenished according to the actual lubrication situation, thus achieving supplemental lubrication.

[0126] The situation is similar to the one described above when the control arm 500 gets stuck during the reset process due to poor lubrication. The difference is that when a stuck situation occurs, the lubricant in the mating cavity 640 will only be discharged when the control lever 600 pulls the control arm 500 again.

[0127] In this embodiment, please refer to Figure 9 Both ends of the rotating shaft 300 are coaxially fixedly connected to an extension shaft 400, the diameter of the extension shaft 400 being smaller than the diameter of the rotating shaft 300.

[0128] Both the inner top wall 211 and the inner bottom wall 212 are provided with mating grooves for engaging with the extension shaft 400. The extension shaft 400 is engaged in the mating grooves, one end face of the rotating shaft 300 is in contact with the inner top wall 211, and the other end face of the rotating shaft 300 is in contact with the inner bottom wall 212.

[0129] The rotating shaft 300 has an axial hole 310 inside, which extends through to the end face of the extension shaft 400.

[0130] The end face of the extension shaft 400 is provided with a first drainage groove 410, and the side face of the extension shaft 400 is provided with a second drainage groove 420. The first drainage groove 410 is arranged radially along the extension shaft 400, one end of the first drainage groove 410 is connected to the axial hole 310, and the other end is connected to the second drainage groove 420.

[0131] The side wall of the rotating shaft 300 is provided with a filling pipe 320 that communicates with the axial hole 310, and the filling pipe 320 is connected to the output pipe 660.

[0132] The end face of the rotating shaft 300 is also provided with an annular groove 330, which is arranged around the extension shaft 400. The second drainage groove 420 is connected to the annular groove 330.

[0133] The rotating shaft 300 has an axial groove 340 on one side surface that is in contact with the first inner sidewall 213 or the second inner sidewall 214, and the annular groove 330 is connected to the axial groove 340.

[0134] With this design, the lubricant in the cavity 640 enters the axial hole 310 through the filling pipe 320, and then passes through the first drainage groove 410, the second drainage groove 420, the annular groove 330 and the axial groove 340 in sequence to fully lubricate the extension shaft 400 and the rotating shaft 300, effectively improving the lubrication effect.

[0135] In this embodiment, a discharge pipe (not shown in the figure) for discharging excess lubricant is also provided. One end of the discharge pipe is connected to the axial groove 340, and the other end of the discharge pipe extends beyond the tubular body 210.

[0136] The discharge pipe can not only discharge excess lubricant, but also discharge any impurities and metal debris that may be present in the first drainage groove 410, the second drainage groove 420, the annular groove 330 and the axial groove 340.

[0137] Furthermore, please combine Figure 10 and Figure 11 In this embodiment, the inner bottom wall 212 at the outlet end of the tubular body 210 is also provided with a groove 220. The groove 220 is arranged along the width direction of the inner bottom wall 212 and is located on the side of the control arm 500 away from the control rod 600.

[0138] A slider 230 is slidably fitted inside the slide groove 220. A partition 240 is fixedly connected to the slider 230. The partition 240 is set perpendicular to the inner bottom wall 212 and perpendicular to the slide groove 220.

[0139] An auxiliary lens 250 is mounted on the side surface of the partition 240 away from the central axis of the tubular body 210. The auxiliary lens 250 is positioned facing the observation section 110, and the central axis of the auxiliary lens 250 is parallel to the partition 240.

[0140] The partition 240 has a through hole that is perpendicular to both the slide groove 220 and the inner bottom wall 212. A slide rod 260 is slidably fitted within the through hole. The end of the slide rod 260 near the control arm 500 extends to the end of the control arm 500 away from the rotating shaft 300 and is hinged to the outer surface of the control arm 500. The axis of rotation of the slide rod 260 relative to the control arm 500 is parallel to the axis of rotation of the rotating shaft 300.

[0141] Each control arm 500 is equipped with a slider 230, a partition 240, an auxiliary lens 250, and a sliding rod 260. The distance between the two partitions 240 is the same as the flow width between the two control arms 500.

[0142] When the control arm 500 rotates, it can drive the slider 230 to slide along the slide groove 220 through the slide rod 260. During this process, the slide rod 260 will slide along the mating through hole, and the distance between the two partitions 240 and the flow width between the two control arms 500 will always remain the same.

[0143] The processor is also used to determine whether the nozzle 200 is aligned with the defective material using the auxiliary lens 250. Specifically, when the vision mechanism determines that the nozzle 200 is aligned with the defective material, the auxiliary lens 250 can be used to check whether the defective material can be observed. If both auxiliary lenses 250 can observe the defective material, it indicates that the nozzle 200 is indeed aligned with the defective material. It should be noted that this method is applicable when the flow width at the outlet end of the tubular body 210 is set to be less than the span L of the defective material.

[0144] This design ensures that the nozzle 200 is aligned with the defective material, preventing the defective material from being blown off course.

[0145] This application also provides a chili pepper screening system, which includes the aforementioned intelligent screening device.

[0146] Optionally, the feeding mechanism 100 can be a vibrating plate. In this case, it is not required that the inner bottom wall 212 of the tubular body 210 be strictly parallel to the observation section 110 of the vibrating plate; they only need to be approximately parallel.

[0147] In summary, the machine vision-based intelligent screening device provided in this application embodiment can effectively improve the screening capability for materials with partial defects, significantly enhancing the screening effect. The chili pepper screening system provided in this application embodiment can effectively improve the screening capability for chili peppers with partial defects, significantly enhancing the screening effect.

[0148] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A machine vision-based intelligent screening device, characterized in that, include: Feeding mechanism, vision mechanism, air supply mechanism, nozzles and processor; The feeding mechanism is used to transport the target material; The vision mechanism is used to acquire image data of the object material conveyed by the feeding mechanism; The air supply mechanism is connected to the nozzle, and the nozzle is located at the feeding channel of the feeding mechanism; The processor is used to determine whether the object material is damaged based on the image data; If the object material is defective, the processor controls the air supply mechanism to supply air to the nozzle so that the defective object material is blown out of the feeding channel of the feeding mechanism using the nozzle.

2. The intelligent screening device based on machine vision according to claim 1, characterized in that, The feeding channel of the feeding mechanism is provided with an observation section, the color of which is different from the color of other parts of the feeding channel; The vision mechanism is set up corresponding to the observation segment and is used to acquire the image data of the object material in the observation segment; The processor is used to determine the object material located in the observation segment based on the background color corresponding to the color of the observation segment in the image data, and to determine whether the object material located in the observation segment is damaged based on the image data.

3. The intelligent screening device based on machine vision according to claim 2, characterized in that, The nozzle includes: a tubular body, a rotating shaft, a control arm, and an adjustment assembly; The internal space of the tubular body has a rectangular cross-section; the tubular body has an inner top wall and an inner bottom wall that are arranged opposite to each other, as well as a first inner side wall and a second inner side wall that are arranged opposite to each other; The inlet end of the tubular body is connected to the gas supply mechanism; The control arm is fixedly connected to the rotating shaft and arranged radially along the rotating shaft. The rotating shaft is rotatably installed in the internal space of the tubular body. The two ends of the rotating shaft are respectively fitted to the inner top wall and the inner bottom wall, and the side wall of the rotating shaft is embedded in the first inner side wall or the second inner side wall. The control arm is simultaneously in contact with both the inner top wall and the inner bottom wall; The rotating shaft / control arm is in transmission cooperation with the adjustment component; If the object material is defective, the processor is further configured to determine the span of the defective object material in the length direction of the feeding channel based on the image data, and control the adjustment component to drive the rotating shaft / control arm so that the flow width at the outlet end of the tubular body is adapted to the span.

4. The intelligent screening device based on machine vision according to claim 3, characterized in that, The end of the tubular body away from its outlet is a closed structure, and the inlet of the tubular body is opened on the side wall of the end away from its outlet. The adjustment assembly includes: a driver and a control lever; The control rod is disposed inside the tubular body and arranged along the length direction of the tubular body. The control rod passes through the end wall of the tubular body away from its outlet end. Along the length direction of the tubular body, the control rod is slidably fitted to the tubular body, and the control rod and the end wall of the tubular body are slidably sealed. The control rod is driven by the driver. The control arm has a hollow structure, and an opening communicating with its internal space is provided on the side wall of the outlet end of the control arm away from the tubular body. A stop bar is fixedly installed in the internal space of the control arm, and the stop bar extends along the length direction of the control arm; The control lever has an extension section at one end near the control arm, the extension section extending through the opening into the control arm; the end of the extension section is provided with a mating part, the mating part fitting against the side of the stop strip away from the opening; The rotating shaft is equipped with a torsion spring. In its natural state, the torsion spring drives the rotating shaft to rotate so that the flow width at the outlet end of the tubular body reaches its maximum. The processor controls the driver to drive the control lever toward the inlet end of the tubular body, so that the mating member pushes the control arm to swing toward the side where the inlet end of the tubular body is located, thereby reducing the flow width at the outlet end of the tubular body to match the span.

5. The intelligent screening device based on machine vision according to claim 4, characterized in that, A column is fixedly connected to the side of the mating component away from the extension section, and the column extends along the length direction of the extension section. The mating component has a mating cavity on the side surface away from the column, and the mating cavity extends along the length direction of the column and into the column. A piston is slidably fitted inside the mating cavity. An elastic element abuts against the piston at the inner end wall of the mating cavity away from the mating member. A stop rod is fixedly connected to the piston at the end away from the elastic element, and the stop rod abuts against the stop bar. The end wall of the column away from the mating component is provided with an input pipe and an output pipe that communicate with the mating cavity. Both the input pipe and the output pipe are configured with a unidirectional structure. The input pipe is used to communicate with the lubricant storage mechanism, and the outlet end of the output pipe is provided at the contact part between the rotating shaft and the tubular body. The torsion spring provides a greater torque than the elastic element provides a spring force, so that in its natural state, the mating element fits against the stop bar, and the plug rod is fully pushed into the mating cavity.

6. The intelligent screening device based on machine vision according to claim 5, characterized in that, Both ends of the rotating shaft are coaxially fixedly connected to an extension shaft, the diameter of which is smaller than that of the rotating shaft. Both the inner top wall and the inner bottom wall are provided with mating grooves for engaging with the extension shaft; The rotating shaft has an axial hole inside, which extends through to the end face of the extension shaft. The end face of the extension shaft is provided with a first drainage groove, and the side face of the extension shaft is provided with a second drainage groove; the first drainage groove is arranged radially along the extension shaft, one end of the first drainage groove is connected to the axial hole, and the other end is connected to the second drainage groove. The side wall of the rotating shaft is provided with a filling pipe that communicates with the axial hole, and the filling pipe is connected to the output pipe.

7. The intelligent screening device based on machine vision according to claim 6, characterized in that, The end face of the rotating shaft is also provided with an annular groove, which is arranged around the extension shaft, and the second drainage groove is connected to the annular groove. The rotating shaft has an axial groove on one side surface that is in contact with the first inner sidewall or the second inner sidewall, and the annular groove is connected to the axial groove.

8. The intelligent screening device based on machine vision according to claim 5, characterized in that, The inner bottom wall at the outlet end of the tubular body is also provided with a sliding groove, which is arranged along the width direction of the inner bottom wall and is located on the side of the control arm away from the control rod. A slider is slidably fitted inside the groove, and a partition is fixedly connected to the slider. The partition is perpendicular to the inner bottom wall and the groove. An auxiliary lens is mounted on the side surface of the partition away from the central axis of the tubular body, and the auxiliary lens is positioned towards the observation section; The partition plate has a through hole, which is perpendicular to both the slide groove and the inner bottom wall. A slide rod is slidably fitted in the through hole. The end of the slide rod near the control arm extends to the end of the control arm away from the rotating shaft and is hinged to the control arm. The distance between the two partition plates is the same as the flow width between the two control arms. The processor is further configured to determine, based on the auxiliary lens, whether the nozzle is aligned with the defective object material; when the nozzle is aligned with the defective object material, the processor controls the air supply mechanism to supply air to the nozzle so as to use the nozzle to blow the defective object material out of the feeding channel of the feeding mechanism.

9. A chili pepper screening system, characterized in that, include: The intelligent screening device as described in any one of claims 1-8.

10. The chili pepper screening system according to claim 9, characterized in that, The feeding mechanism is a vibrating disc.

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