A machine vision-based continuous feeding and conveying mechanism for material sorting

Abstract

This invention relates to the field of material conveying technology and discloses a continuous material screening and conveying mechanism based on machine vision. The mechanism includes a conveyor belt body, a controller and an image sensor mounted on the conveyor belt body, and a switching component mounted on the conveyor belt body. Through the coordinated operation of the image sensor and the controller, this invention achieves high precision and stability in material screening and detection. Simultaneously, the switching component can drive the sorting plate to rotate precisely to a preset path, enabling directional diversion of materials of different specifications and categories. Furthermore, it features low command response delay and adaptability to the conveying rate requirements of different materials. When the unloading frame deflects synchronously with the rocker arm, it can accurately align with the sorting path to ensure smooth material drop, and the deflection angle creates a smooth unloading guide. Simultaneously, the synchronous rotation of the auxiliary rollers converts sliding friction into rolling friction, significantly reducing material unloading resistance, preventing accumulation and congestion, reducing surface wear, and protecting material integrity.

Description

Technical Field

[0001] This invention belongs to the field of material feeding and conveying technology, specifically, it relates to a continuous material feeding and conveying mechanism based on machine vision. Background Technology

[0002] This invention relates to the field of material screening and conveying technology, specifically to the background technology of a continuous feeding and conveying mechanism for material screening based on machine vision. In many fields such as industrial production and agricultural processing, material screening and continuous conveying are indispensable key links, and their efficiency and accuracy directly affect the stability of subsequent production processes and product quality.

[0003] While existing mechanically assisted screening and conveying equipment reduces reliance on manual labor to some extent, in actual operation, the screened material can fall naturally from the conveyor belt, but the falling position is fixed. Over time, this may eventually lead to excessive accumulation of material at the discharge point, ultimately affecting the normal discharge of material in the later stages.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: A machine vision-based continuous material screening and feeding conveyor mechanism includes a conveyor belt body.

[0006] A controller and an image sensor are respectively installed on the conveyor belt body. The image sensor is used to detect the shape of the material. A switching component is installed on the conveyor belt body, and a sorting plate is installed at the output end of the switching component. The sorting plate is used to guide the material to move to different conveying paths. The image sensor and the switching component are electrically connected to the controller. A pair of feeding frames corresponding to the conveying path are rotatably installed on the conveyor belt body. A turntable is also installed at the output end of the switching component. A protrusion is installed on the turntable. A rocker arm is installed on the side wall of the feeding frame. A connecting component is installed on the rocker arm and the connecting component is in contact with the protrusion. When the sorting plate rotates to different paths, the protrusion drives the feeding frame to deflect, which helps to discharge the screened material. The feeding frame is equipped with several pairs of auxiliary rollers. A swing arm is installed at the rotation center of the auxiliary rollers. A synchronization frame is slidably arranged at the end of the swing arm, and the end of the synchronization frame is in contact with the vertical plane. When the feeding frame deflects, the synchronization frame slides synchronously and drives the auxiliary rollers to rotate, thus assisting in feeding.

[0007] In a preferred embodiment of the present invention, the outer frame of the conveyor belt body is equipped with a positioning frame, the bottom of the positioning frame is equipped with several pairs of support legs, the adjacent support legs on the same side are equipped with cross ribs, the adjacent support legs on both sides are equipped with tie ribs, the bottom of the support legs is equipped with a pad, the side wall of the positioning frame is equipped with a guide block, and the guide block has a vertical surface that fits with each other.

[0008] In a preferred embodiment of the present invention, a mounting plate is installed on the side wall of the positioning frame, a controller is installed on the top of the mounting plate, a gantry frame is installed on the top of the positioning frame, and a plurality of pairs of image sensors are installed on the gantry frame, with the image sensors being perpendicularly corresponding to the conveyor belt body.

[0009] In a preferred embodiment of the present invention, a frame is mounted on the positioning frame, and a switching component is mounted on the frame. The switching component includes a sorting motor, a positioning plate is mounted on the housing of the sorting motor, the positioning plate is mounted on the side wall of the frame and is in an inclined state, a synchronous shaft is mounted on the output end of the sorting motor, the synchronous shaft moves through the frame, and a sorting plate is mounted on the end of the synchronous shaft.

[0010] In a preferred embodiment of the present invention, a turntable is mounted on the side wall of the synchronous shaft, and the connecting assembly includes a slider. A synchronous rod is mounted on the side wall of the slider, and a ball bearing is mounted at the end of the synchronous rod. The ball bearing is in contact with the turntable. A limit rod is installed through the slider. The bottom of the limit rod is mounted on the frame, and a limit plate is mounted on the top of the limit rod. A compression spring is sleeved on the limit rod. One end of the compression spring is engaged with the limit plate, and the other end of the compression spring is engaged with the slider. The compression spring is used to drive the ball bearing to always be in contact with the turntable.

[0011] In a preferred embodiment of the present invention, a synchronization plate is installed on the side wall of the slider, and a sliding rod is installed at the bottom of the synchronization plate. The sliding rod is located on both sides of the unloading frame. A sliding groove is provided on the rocker arm, and the sliding groove is slidably connected to the sliding rod. The rocker arm is in an inclined state.

[0012] In a preferred embodiment of the present invention, a side plate is installed on the side wall of the feeding frame, and a positioning shaft is installed at the rotation center of the rocker arm, the positioning shaft being rotatably connected to the frame.

[0013] In a preferred embodiment of the present invention, a rotating shaft is installed at the rotation center of the auxiliary roller, the rotating shaft movably passes through the feeding frame, a swing arm is installed at the end of the rotating shaft, a guide rod is installed on the swing arm, a plurality of push plates are installed on the synchronization frame, a notch is provided between adjacent push plates, the notch is in the shape of a straight line, and the notch is slidably connected to the guide rod.

[0014] In a preferred embodiment of the present invention, a positioning block is installed on the synchronization frame, and a plug rod is installed through the positioning block. Sockets are installed at both ends of the plug rod, and the sockets are installed on the side wall of the unloading frame. A storage spring is sleeved on the plug rod, with one end of the storage spring snapped into the socket and the other end snapped into the positioning block.

[0015] In a preferred embodiment of the present invention, the synchronization frame is equipped with guide wheels, which are attached to the side wall of the guide block. The side wall of the guide block has an arc-shaped surface and a vertical surface, which are interconnected. The center of curvature of the arc-shaped surface is the same as the center of curvature of the feeding frame.

[0016] Compared with the prior art, the present invention has the following advantages: This invention achieves high precision and stability in material screening and detection through the coordinated operation of an image sensor and a controller. Simultaneously, the switching component can precisely rotate the sorting plate to a preset path, enabling directional diversion of materials of different specifications and categories. Furthermore, it features low command response latency and adaptability to varying material conveying speed requirements. When the unloading frame deflects synchronously with the rocker arm, it not only precisely aligns with the sorting path to ensure smooth material entry but also creates a smooth unloading guide through the deflection angle, allowing materials to move to different unloading positions and preventing material accumulation. Simultaneously, the synchronous rotation of the auxiliary rollers converts sliding friction into rolling friction, significantly reducing material unloading resistance, preventing accumulation and congestion, and minimizing surface wear while protecting material integrity.

[0017] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0018] In the attached diagram: Figure 1 This is a front view of a machine vision-based continuous material sorting and feeding conveyor mechanism. Figure 2 This is a 3D diagram of a continuous material screening and conveying mechanism based on machine vision. Figure 3 A bottom view of the frame of a machine vision-based continuous material sorting and conveying mechanism; Figure 4 This is a three-dimensional view of the frame of a machine vision-based continuous material screening and conveying mechanism. Figure 5 This is a machine vision-based continuous material sorting and feeding conveyor mechanism. Figure 4 Enlarged view of point A in the middle; Figure 6 This is a partial view of a machine vision-based continuous material sorting and conveying mechanism. Figure 7This is a machine vision-based continuous material sorting and feeding conveyor mechanism. Figure 6 Enlarged view at point B in the middle; Figure 8 This is a machine vision-based continuous material sorting and feeding conveyor mechanism. Figure 6 Enlarged view of point C.

[0019] In the picture: 1. Conveyor belt body; 11. Positioning frame; 111. Support leg; 112. Cross rib; 113. Tie rib; 12. Controller; 121. Mounting plate; 13. Image sensor; 131. Gantry frame; 2. Frame; 21. Sorting plate; 211. Sorting motor; 212. Positioning plate; 213. Synchronous shaft; 22. Feeding frame; 221. Side plate; 222. Rocker arm; 223. Positioning shaft; 23. Slider; 231. Synchronous plate; 232. Slide rod; 233. Slide groove; 234. Limiting rod; 235. Limiting plate; 236. Compression spring; 24. Turntable; 241. Protrusion; 242. Ball bearing; 243. Synchronous rod; 25. Auxiliary roller; 251. Rotating shaft; 252. Swing arm; 253. Smooth rod; 254. Synchronous frame; 255. Push plate; 256. Positioning block; 257. Insert rod; 258. Socket; 259. Storage spring; 26. Guide block; 261. Arc surface; 262. Vertical surface; 263. Guide wheel. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0021] Example 1: like Figures 1 to 8 As shown, a machine vision-based material screening and continuous feeding conveyor mechanism includes a conveyor belt body 1.

[0022] A controller 12 and an image sensor 13 are respectively installed on the conveyor belt body 1. The image sensor 13 is used to detect the shape of the material. A switching component is installed on the conveyor belt body 1, and a sorting plate 21 is installed at the output end of the switching component. The sorting plate 21 is used to guide the material to move to different conveying paths. The image sensor 13 and the switching component are electrically connected to the controller 12 respectively. A pair of feeding frames 22 corresponding to the conveying path are rotatably installed on the conveyor belt body 1. A turntable 24 is also installed at the output end of the switching component. A protrusion 241 is installed on the turntable 24. A rocker arm 222 is installed on the side wall of the feeding frame 22. A connecting component is installed on the rocker arm 222 and the connecting component is in contact with the protrusion 241. When the sorting plate 21 rotates to a different path, the protrusion 241 drives the feeding frame 22 to deflect, assisting in the feeding of the screened material. Several pairs of auxiliary rollers 25 are installed on the feeding frame 22. A swing arm 252 is installed at the center of rotation of the auxiliary roller 25. A synchronization frame 254 is slidably set at the end of the swing arm 252 and the end of the synchronization frame 254 is in contact with the vertical surface 262. When the feeding frame 22 deflects, the synchronization frame 254 slides synchronously and drives the auxiliary rollers 25 to rotate, assisting in the feeding. The linkage structure between the protrusion 241 and the rocker arm 222 enables the precise deflection of the feeding frame 22. The cooperation between the swing arm 252 and the synchronous frame 254 drives the auxiliary roller 25 to rotate. The dual auxiliary effect ensures smooth material feeding and avoids accumulation. The deflection design of the feeding frame 22 and the rotation structure of the auxiliary roller 25 both improve the feeding efficiency.

[0023] like Figures 1 to 8 As shown, in a specific embodiment, a cross rib 112 is installed between adjacent support legs 111 on the same side, and a tie rib 113 is installed between adjacent support legs 111 on both sides. A pad is installed at the bottom of the support leg 111, and a guide block 26 is installed on the side wall of the positioning frame 11, with a vertical surface 262 on the guide block 26 that fits into each other. The cross rib 112 and tie rib 113 enhance the structural stability of the support leg 111, the pad improves the stability of the mechanism placement, and the vertical surface 262 of the guide block 26 provides precise guidance for the synchronous frame 254, ensuring stable sliding trajectory. The support leg 111, cross rib 112, and tie rib 113 together improve the load-bearing capacity and operational stability of the entire mechanism.

[0024] like Figures 1 to 8 As shown, furthermore, a mounting plate 121 is installed on the side wall of the positioning frame 11, a controller 12 is installed on the top of the mounting plate 121, and a gantry frame 131 is installed on the top of the positioning frame 11. Several pairs of image sensors 13 are installed on the gantry frame 131, and the image sensors 13 are perpendicularly aligned with the conveyor belt body 1. The mounting plate 121 provides a stable mounting position for the controller 12, and the gantry frame 131 ensures the accurate installation height and angle of the image sensors 13. The perpendicular alignment design enables the image sensors 13 to clearly capture material characteristics and improve detection accuracy. The mounting structure of the gantry frame 131 and the vertical layout of the image sensors 13 ensure the reliability of the detection data.

[0025] Example 2: The difference between the above embodiments and this embodiment is that: Figures 1 to 8As shown, a frame 2 is mounted on the positioning frame 11, and a switching assembly is mounted on the frame 2. The switching assembly includes a sorting motor 211, a positioning plate 212 mounted on the housing of the sorting motor 211, the positioning plate 212 being mounted on the side wall of the frame 2 and in an inclined state, and a synchronous shaft 213 mounted on the output end of the sorting motor 211, the synchronous shaft 213 movably passing through the frame 2, and the sorting plate 21 being mounted on the end of the synchronous shaft 213. The transmission structure of the sorting motor 211 and the synchronous shaft 213 improves the steering response speed and positioning accuracy of the sorting plate 21.

[0026] like Figures 1 to 8 As shown, in a specific embodiment, a turntable 24 is installed on the side wall of the synchronous shaft 213, and the connecting assembly includes a slider 23. A synchronous rod 243 is installed on the side wall of the slider 23, and a ball bearing 242 is installed at the end of the synchronous rod 243. The ball bearing 242 is attached to the turntable 24. A limit rod 234 is installed through the inside of the slider 23. The bottom of the limit rod 234 is installed on the frame 2, and a limit plate 235 is installed on the top of the limit rod 234. A compression spring 236 is sleeved on the limit rod 234. One end of the compression spring 236 is engaged with the limit plate 235, and the other end of the compression spring 236 is engaged with the slider 23. The compression spring 236 is used to drive the ball bearing 242 to always be in contact with the turntable 24. The close fit design between the turntable 24 and the ball bearing 242 reduces transmission friction. The limiting rod 234 and the limiting plate 235 limit the sliding range of the slider 23. The compression spring 236 ensures that the ball bearing 242 is always in close contact with the turntable 24, avoiding transmission gaps.

[0027] like Figures 1 to 8 As shown, a synchronization plate 231 is further installed on the side wall of the slider 23, and a slide rod 232 is installed on the bottom of the synchronization plate 231. The slide rod 232 is located on both sides of the unloading frame 22. A groove 233 is opened on the rocker arm 222, and the groove 233 is slidably connected to the slide rod 232, and the rocker arm 222 is in an inclined state. The synchronization plate 231 realizes the synchronous movement of the slider 23 and the slide rod 232, and the sliding cooperation between the slide rod 232 and the groove 233 converts the linear motion into the rotational motion of the rocker arm 222.

[0028] like Figures 1 to 8 As shown, a side plate 221 is further installed on the side wall of the feeding frame 22, and a positioning shaft 223 is installed at the rotation center of the rocker arm 222. The positioning shaft 223 is rotatably connected to the frame 2. The side plate 221 prevents material leakage during feeding, and the positioning shaft 223 provides a stable rotation fulcrum for the rocker arm 222, ensuring that the rocker arm 222 rotates smoothly without deviation.

[0029] Example 3: The difference between the above embodiments and this embodiment is that: Figures 1 to 8As shown, a rotating shaft 251 is mounted at the center of rotation of the auxiliary roller 25. The rotating shaft 251 movably passes through the feeding frame 22. A swing arm 252 is mounted at the end of the rotating shaft 251, and a guide rod 253 is mounted on the swing arm 252. Several pairs of push plates 255 are mounted on the synchronous frame 254. A notch is provided between adjacent push plates 255, and the notch is in the shape of a straight line. The notch is slidably connected to the guide rod 253. The rotating shaft 251 enables the flexible rotation of the auxiliary roller 25. The sliding cooperation between the swing arm 252, the guide rod 253 and the notch of the push plate 255 converts the linear motion of the synchronous frame 254 into the rotational motion of the auxiliary roller 25. The straight notch ensures precise transmission.

[0030] like Figures 1 to 8 As shown, in a specific embodiment, a positioning block 256 is installed on the synchronization frame 254. A rod 257 is inserted through the positioning block 256, and sockets 258 are installed at both ends of the rod 257. The sockets 258 are installed on the side wall of the unloading frame 22. A storage spring 259 is sleeved on the rod 257. One end of the storage spring 259 is engaged with the socket 258, and the other end is engaged with the positioning block 256. The cooperation between the positioning block 256 and the rod 257 provides precise guidance for the synchronization frame 254, and the storage spring 259 ensures that the synchronization frame 254 always conforms to the guide block 26, achieving synchronous reset.

[0031] like Figures 1 to 8 As shown, the synchronization frame 254 is further equipped with guide wheels 263, which fit against the side wall of the guide block 26. The side wall of the guide block 26 has an arc-shaped surface 261 and a vertical surface 262, which are interconnected. The center of curvature of the arc-shaped surface 261 is the same as the center of curvature of the unloading frame 22. The guide wheels 263 reduce the sliding friction between the synchronization frame 254 and the guide block 26. The design of the arc-shaped surface 261 aligning with the center of curvature of the unloading frame 22 ensures smooth sliding of the synchronization frame 254 as it deflects the unloading frame 22. The vertical surface 262 ensures stable positioning of the synchronization frame 254 during unloading.

[0032] The implementation principle of a machine vision-based continuous material screening and conveying mechanism of the present invention is as follows: Material is stably and continuously fed via the uniform speed transmission of the conveyor belt body 1. During the conveying process, the material accurately reaches the detection range of the image sensor 13 along with the conveyor belt body 1. Several pairs of image sensors 13 are vertically aligned with the conveyor belt body 1, and can adaptively adjust the acquisition frame rate according to the material conveying speed to clearly capture key shape features such as the outline and size of the material, forming high-definition image data and transmitting it to the controller 12 in real time. The controller 12 has a built-in preset multi-category material screening parameter library. After receiving the image data, it quickly completes pixel analysis, feature extraction, and parameter comparison to accurately determine whether the material meets the preset screening standards. Simultaneously, it can automatically shield against slight vibration interference during the conveying process, improving the accuracy of the judgment. If the material is determined to be of a different category and needs to be sorted, the controller 12 immediately sends a precise pulse control command to the switching component.

[0033] After receiving the instruction, the switching component quickly starts the sorting motor 211 and drives the synchronous shaft 213 to rotate at a fixed angle. The synchronous shaft 213 drives the sorting plate 21 to rotate precisely to the preset sorting path position that matches the material category through torque transmission. This achieves directional and precise guidance and diversion of materials of different specifications and categories, effectively avoiding the sorting deviation of traditional screening methods, significantly improving the accuracy and efficiency of material screening, and adapting to the conveying rate requirements of different materials, thus enhancing the versatility of the mechanism.

[0034] While the synchronous shaft 213 rotates, it drives the turntable 24 to rotate synchronously and at the same speed through the key connection structure. The protrusion 241 on the turntable 24 rotates together and always keeps in close contact with the ball 242 at the end of the synchronous rod 243 in the connecting assembly. Under the elastic preload of the compression spring 236, the ball 242 can adaptively compensate for the slight jumps during the rotation of the turntable 24 and always keep in close contact with the surface of the turntable 24, ensuring that the transmission process is gapless and without jamming. When the protrusion 241 rotates, it precisely pushes the slider 23 to slide smoothly up and down along the limit rod 234 through the thrust transmission. The friction is small during the sliding process and the response is rapid. During the sliding process of slider 23, the sliding rod 232 at the bottom of its side wall synchronous plate 231 slides smoothly within the sliding groove 233 of rocker arm 222. The limiting effect of the sliding groove 233 ensures the accuracy of the sliding trajectory, thereby driving rocker arm 222 to rotate at a fixed angle around positioning axis 223. Rocker arm 222 further drives unloading frame 22 to deflect synchronously around positioning axis 223 through torque transmission, so that the feed inlet of unloading frame 22 can be connected to the diversion path guided by sorting plate 21 in real time and accurately. The sorted material falls smoothly into unloading frame 22, and the deflection angle can create a smooth unloading guide angle for the raw material falling into unloading frame 22, realizing stable unloading operation of raw material, completely avoiding problems such as material falling, deviation and unloading congestion, and improving the overall stability of unloading.

[0035] Meanwhile, during the deflection of the unloading frame 22, the insert rod 257 provides precise linear guidance to the synchronous frame 254, preventing the synchronous frame 254 from sliding off course. The guide wheel 263 on the synchronous frame 254 slides smoothly along the arc surface 261 of the guide block 26 to the vertical surface 262 and remains in close contact. Under the elastic reset action of the storage spring 259, the synchronous frame 254 can achieve synchronous and smooth sliding with the deflection angle of the unloading frame 22, and the sliding response is completely synchronized with the deflection action of the unloading frame 22.

[0036] When the synchronous frame 254 slides, the push plate 255 on its surface slides precisely relative to the smooth rod 253 on the swing arm 252 through the notch. The thrust drives the swing arm 252 to drive the rotating shaft 251 to rotate synchronously, and finally drives several pairs of auxiliary rollers 25 in the feeding frame 22 to rotate synchronously at the same speed and in the same direction. The rotation of the auxiliary rollers 25 can convert the sliding friction between the material and the inner wall of the feeding frame 22 into rolling friction, which greatly reduces the material feeding resistance. This not only prevents the material from accumulating and clogging in the feeding frame 22, but also reduces the wear on the material surface and protects the integrity of the material.

[0037] The entire process, through the precise coordination of various mechanical structures and the efficient and interference-resistant detection of machine vision, not only achieves fully automated operation of materials from continuous feeding and precise screening to smooth unloading, but also significantly improves the stability and reliability of the overall mechanism, reduces the equipment failure rate and subsequent maintenance costs, and can be stably adapted to large-scale material screening scenarios.

[0038] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A continuous material screening and conveying mechanism based on machine vision, comprising a conveyor belt body (1), characterized in that: A controller (12) and an image sensor (13) are respectively installed on the conveyor belt body (1). The image sensor (13) is used to detect the shape of the material. A switching component is installed on the conveyor belt body (1), and a sorting plate (21) is installed at the output end of the switching component. The sorting plate (21) is used to guide the material to move to different conveying paths. The image sensor (13) and the switching component are electrically connected to the controller (12). A positioning frame (11) is installed on the outer frame of the conveyor belt body (1). A pair of feeding frames (22) corresponding to the conveying path are rotatably installed on the conveyor belt body (1). A turntable (24) is also installed at the output end of the switching component. A protrusion (241) is installed on the turntable (24). A rocker arm (222) is installed on the side wall of the feeding frame (22). A connecting component is installed on the rocker arm (222), and the connecting component is in contact with the protrusion (241). When the sorting plate (21) rotates to a different path, the feeding frame (22) is deflected by the protrusion (241) to assist in the feeding of the screened material. The feeding frame (22) is equipped with several pairs of auxiliary rollers (25). A swing arm (252) is installed at the rotation center of the auxiliary rollers (25). A synchronization frame (254) is slidably arranged at the end of the swing arm (252). The end of the synchronization frame (254) is in contact with the vertical plane (262). When the feeding frame (22) deflects, the synchronization frame (254) slides synchronously and drives the auxiliary rollers (25) to rotate to assist in feeding. A frame (2) is mounted on the positioning frame (11), and a switching component is mounted on the frame (2). The switching component includes a sorting motor (211). A positioning plate (212) is mounted on the outer shell of the sorting motor (211). The positioning plate (212) is mounted on the side wall of the frame (2) and is in an inclined state. A synchronous shaft (213) is mounted on the output end of the sorting motor (211). The synchronous shaft (213) moves through the frame (2), and a sorting plate (21) is mounted on the end of the synchronous shaft (213). The synchronous shaft (213) has a turntable (24) mounted on its side wall, and the connecting assembly includes a slider (23). The slider (23) has a synchronous rod (243) mounted on its side wall. The end of the synchronous rod (243) has a ball (242) mounted on its end. The ball (242) fits against the turntable (24). A limit rod (234) is installed through the inside of the slider (23). The bottom of the limit rod (234) is mounted on the frame (2). A limit plate (235) is installed on the top of the limit rod (234). A compression spring (236) is sleeved on the limit rod (234). One end of the compression spring (236) is engaged with the limit plate (235), and the other end of the compression spring (236) is engaged with the slider (23). The compression spring (236) is used to drive the ball (242) to always fit against the turntable (24). A synchronization plate (231) is installed on the side wall of the slider (23), and a slide rod (232) is installed on the bottom of the synchronization plate (231). The slide rod (232) is located on both sides of the unloading frame (22). A sliding groove (233) is opened on the rocker arm (222). The sliding groove (233) is slidably connected to the slide rod (232), and the rocker arm (222) is in an inclined state. The side wall of the feeding frame (22) is equipped with a side plate (221), and the center of rotation of the rocker arm (222) is equipped with a positioning shaft (223), which is rotatably connected to the frame (2).

2. The continuous material screening and conveying mechanism based on machine vision according to claim 1, characterized in that, The positioning frame (11) has several pairs of support legs (111) installed at the bottom. Cross ribs (112) are installed between adjacent support legs (111) on the same side. Tie ribs (113) are installed between adjacent support legs (111) on both sides. A pad is installed at the bottom of the support leg (111). A guide block (26) is installed on the side wall of the positioning frame (11), and a vertical surface (262) is opened on the guide block (26) and fits against each other.

3. The continuous material screening and conveying mechanism based on machine vision according to claim 2, characterized in that, The positioning frame (11) has an installation plate (121) installed on its side wall. The installation plate (121) has a controller (12) installed on its top. The positioning frame (11) has a gantry frame (131) installed on its top. Several pairs of image sensors (13) are installed on the gantry frame (131), and the image sensors (13) are perpendicular to the conveyor belt body (1).

4. The continuous material screening and conveying mechanism based on machine vision according to claim 1, characterized in that, The auxiliary roller (25) has a rotating shaft (251) installed at its rotation center. The rotating shaft (251) moves through the feeding frame (22). A swing arm (252) is installed at the end of the rotating shaft (251). A light rod (253) is installed on the swing arm (252). Several pairs of push plates (255) are installed on the synchronous frame (254). There is a notch between adjacent push plates (255), and the notch is in the shape of a straight line. The notch is slidably connected to the light rod (253).

5. The continuous material screening and conveying mechanism based on machine vision according to claim 1, characterized in that, A positioning block (256) is installed on the synchronous frame (254). A plug rod (257) is installed through the positioning block (256). Sockets (258) are installed at both ends of the plug rod (257). The sockets (258) are installed on the side wall of the unloading frame (22). A storage spring (259) is sleeved on the plug rod (257). One end of the storage spring (259) is snapped into the socket (258), and the other end of the storage spring (259) is snapped into the positioning block (256).

6. The continuous material screening and conveying mechanism based on machine vision according to claim 2, characterized in that, The synchronous frame (254) is equipped with guide wheels (263), which are attached to the side wall of the guide block (26). The side wall of the guide block (26) has an arc-shaped surface (261) and a vertical surface (262), which are connected to each other. The curvature center of the arc-shaped surface (261) is the same as the curvature center of the feeding frame (22).

Images