A material sorting system

Abstract

The present invention belongs to the field of material sorting equipment, and specifically relates to a sorting system capable of sorting small, thin, and differently shaped materials. It includes a conveyor belt, along the length direction of which there are successively arranged a material introduction mechanism, a material spacing adjustment mechanism, and a sorting mechanism. The material introduction mechanism includes a flattening unit installed above the conveyor belt and guide plates installed on both sides of the conveyor belt. The flattening unit includes a mounting frame installed on the top side of the conveyor belt. A fixed driving component and a placing frame slidably matched with the mounting frame are installed on the mounting frame. The output end of the driving component is fixedly installed with the placing frame, and the distance between the bottom of the placing frame and the conveyor belt is the thickness of the workpiece. The material spacing adjustment mechanism is installed on one side of the guide plate for adjusting the spacing of the subsequent conveyance of the workpiece. The sorting mechanism is arranged at the end of the conveyor belt for sorting out different types of workpieces. It effectively eliminates the problem of sorting errors caused by the stacking of thin sheet materials.

Description

Technical Field

[0001] The present invention relates to a material sorting device, and more particularly to a sorting system capable of sorting small, thin, and differently shaped materials. Background Art

[0002] An automatic sorting machine sorts items according to pre-set computer instructions and delivers the sorted items to designated positions. Currently, a thin material sorting machine is a device for sorting thin materials. Now, a customer's materials are thin and include various mixed materials such as triangles, semi-circles / circles, and rectangles (for example, student rulers, including triangular rulers, rectangular rulers, and semi-circular protractor rulers). Most of the sorting objects targeted by the sorting devices on the market are large and medium-sized objects, while there are few sorting devices for thin and light parts such as thin sheet parts and small objects.

[0003] Existing sorting machines generally include three parts: a material loading part, a sorting part, and a collection part arranged in sequence along the conveying direction. The material loading part uses a vibrating screen feeding method for small objects. However, when the vibrating screen feeding method is applied to the thin sheet part materials used by the above-mentioned customer, it is easy for the materials to stack when falling onto the conveyor belt. If stacking occurs, there is a high probability of sorting errors at the workstations in the sorting part; sorting errors will inevitably bring unavoidable troubles to the subsequent collection part work. Summary of the Invention

[0004] Based on this, in order to solve the problems, the present invention provides a sorting system capable of sorting small, thin, and differently shaped materials, eliminating the problem of sorting errors caused by stacking of thin sheet materials. The specific technical solution is as follows:

[0005] A material sorting system includes a conveyor belt. Along the length direction of the conveyor belt, there are sequentially arranged a material guiding mechanism, a material spacing adjusting mechanism, and a sorting mechanism. The material guiding mechanism includes a flattening unit installed above the conveyor belt and guiding plates installed on both sides of the conveyor belt. The flattening unit includes a mounting frame installed on the top side of the conveyor belt. On the mounting frame, there are installed a fixedly arranged driving component and a placing frame slidably matched with the mounting frame. The output end of the driving component is fixedly installed with the placing frame. The distance between the bottom of the placing frame and the conveyor belt is the thickness of the workpiece. The material spacing adjusting mechanism is installed on one side of the guiding plate to adjust the spacing of the subsequent conveying of the workpiece. The sorting mechanism is arranged at the end of the conveyor belt to sort out different types of workpieces.

[0006] The above sorting system can convey materials backward in a unified "lying flat" posture by setting a material introduction mechanism, preventing the materials from scratching the conveyor belt; it can convey the adjusted materials backward at equal intervals by setting a material spacing adjustment mechanism, preventing congestion at the rear side and avoiding the sorting mechanism from working too intensively or loosely; the sorting mechanism efficiently sorts the materials after the spacing adjustment process. Among them, the material introduction mechanism adopts the design structure of a driving component, a storage rack, a guide plate, and a mounting rack, which can make the materials inside the storage rack achieve a "lying flat" posture under the indirect action of the driving component, eliminating the problem of sorting errors caused by material stacking.

[0007] Further, the material spacing adjustment mechanism includes a fixed plate installed at the bottom of the side wall of the guide plate. A driving motor is installed on the fixed plate. The output end of the driving motor is fixedly installed with a driving disk. A convex portion is installed on the outer peripheral surface of the driving disk. A limiting claw is rotatably installed on the fixed plate. An acting portion is provided on the limiting claw. The acting portion is elastically opened outward under the action of the convex portion. A return spring is connected between the limiting claw and the fixed plate. A spacing adjustment component is provided on the fixed plate.

[0008] Further, the spacing adjustment component includes an adjustment disk rotatably installed on the fixed plate. Limiting structures are circumferentially and equally spaced on the adjustment disk. The limiting structures are adapted to the limiting claws. An adjustment member is fixedly installed on the top of the adjustment disk. The adjustment member is a plurality of limiting rods circumferentially and equally spaced.

[0009] Further, a storage hopper is arranged inside the storage rack. An elastic opening is arranged on one side of the bottom of the storage hopper. A feeding component is arranged on the top of the storage hopper. A plurality of posture adjustment arc plates are arranged at the bottom of the elastic opening of the storage hopper in a vertically staggered manner. The feeding component inside the storage hopper lowers the internal materials through the elastic opening. By setting the posture adjustment arc plates, the posture of the materials discharged from the elastic opening can be effectively adjusted.

[0010] Further, the elastic opening includes a baffle rotatably installed on the side of the storage hopper. A side plate is arranged on the side of the baffle and is rotatably arranged along the side of the storage hopper. The side plate and the side of the storage hopper are connected by an elastic telescopic member. Under the pressing action of the feeding component, the materials at the top push open the baffle downward, and the materials are lowered. After the pressing action of the feeding component is eliminated, the side plate and the baffle will automatically return to the initial state under the action of the elastic telescopic member.

[0011] Further, the feeding assembly includes a driving cylinder installed at the top of the storage hopper. The output end of the driving cylinder is equipped with a downward pushing plate, which is slidably installed on the inner top of the storage hopper. A guiding frame is installed on the inner top of the storage hopper. The downward pushing plate includes a fixed part and a movable part. The fixed part is connected to the output end of the driving cylinder, and the movable part is installed on one side of the fixed part and connected to the fixed part through a spring. By driving the downward pushing plate to move downward by the driving cylinder, the materials can be effectively discharged through the downward movement of the downward pushing plate. The downward pushing plate is processed by the movable part and the fixed part. When the downward pushing plate pushes the materials downward, even if the materials are in an inclined state, if all the inclined materials are directly above the baffle, there will be no jamming phenomenon. If a part of the materials is directly above the baffle and the other part is still directly above the bottom plate of the storage hopper, this solution will not affect the discharge of the remaining materials. Without this structural design, there will be a jamming phenomenon.

[0012] Further, a pushing assembly is arranged inside the storage hopper. The pushing assembly includes a pushing plate that is horizontally slidably installed inside the storage hopper, and a pushing member is arranged on the side of the pushing plate facing away from the workpiece. By using the pushing plate of the pushing member to push the materials, the materials inside the storage hopper can be regularized, so that the materials pushed by the downward pushing plate are in a vertical state, which is beneficial for the discharging process.

[0013] Further, a number of equally spaced posture adjustment steps are arranged on the adjustment surface of the posture adjustment arc plate. Through the posture adjustment steps, the postures of the discharged materials can be adjusted without any order, and finally the materials are in a "lying flat" state when they fall on the conveyor belt.

[0014] Further, the driving assembly includes a flattening cylinder fixedly installed on the mounting frame or a driver fixedly installed on the mounting frame. The driver is connected to the storage rack through a transmission mechanism, and the transmission mechanism includes one of a gear-rack mechanism, a crank-slider mechanism or a lead screw-nut mechanism.

[0015] Further, the sorting mechanism includes an OPENMV image recognition module installed at the end of the conveyor belt and a sorting platform independent of the rear side of the end of the conveyor belt. A sorting turntable is rotatably installed on the sorting platform, and the driving device of the sorting turntable is arranged inside the sorting platform. A plurality of sorting areas are circumferentially and equally spaced on the sorting turntable, and sorting conveyor belts are installed at the sorting areas.

[0016] Compared with the traditional technology, the present invention has the following advantages:

[0017] The material sorting system can convey materials backward in a unified "lying flat" posture through the setting of a material introduction mechanism, preventing the materials from scratching the conveyor belt; through the setting of a material distance adjustment mechanism, the adjusted materials can be conveyed backward at equal intervals, preventing congestion at the rear side and being unfavorable to the sorting and processing of materials; the sorted materials after the distance adjustment process are efficiently sorted through a sorting mechanism; among them, the material introduction mechanism adopts the design structure of a driving component, a storage rack, a guide plate, and a mounting rack, and can make the materials inside the storage rack achieve a "lying flat" posture under the indirect action of the driving component, eliminating the problem of sorting errors caused by material stacking. Brief Description of the Drawings

[0018] The present invention can be further understood from the following description in conjunction with the drawings. The components in the drawings are not necessarily drawn to scale, but the emphasis is on showing the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0019] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of the structure of the storage rack according to an embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of the internal structure of the storage rack according to an embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of the overall structure of the storage hopper according to another embodiment of the present invention;

[0023] Figure 5 is a bottom plan view of the fixing plate according to another embodiment of the present invention;

[0024] Figure 6 is a schematic diagram of the principle of the OPENMV image recognition module according to another embodiment of the present invention.

[0025] Description of the Reference Numerals:

[0026] 10 - Conveyor belt;

[0027] 20 - Material introduction mechanism, 21 - Guide plate, 22 - Mounting rack, 23 - Storage rack, 231 - Storage hopper, 232 - Posture adjustment arc plate, 233 - Baffle, 234 - Side plate, 235 - Elastic telescopic member, 236 - Driving cylinder, 237 - Lower pushing plate, 2371 - Fixed part; 2372 - Movable part, 238 - Guide frame, 239 - Top pushing plate, 2310 - Top pushing member;

[0028] 30 - Material Spacing Adjustment Mechanism; 31 - Fixed Plate, 32 - Motor, 33 - Driving Disc, 331 - Protrusion, 34 - Limiting Claw, 35 - Return Spring, 36 - Adjusting Disc, 37 - Adjusting Part,

[0029] 40 - Sorting Mechanism, 41 - OPENMV Image Recognition Module, 42 - Sorting Platform, 43 - Sorting Turntable, 44 - Sorting Conveyor Belt. Detailed Implementation Manner

[0030] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with its embodiments. It should be understood that the specific implementation manners described herein are only used to explain the present invention and do not limit the protection scope of the present invention.

[0031] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific implementation manners and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0033] In the present invention, the so-called "first" and "second" do not represent specific quantities and sequences, but are only used for name distinction.

[0034] As Figure 1 shown, in an embodiment of the present invention, a material sorting system includes a conveyor belt 10. Along the length direction of the conveyor belt 10, a material introduction mechanism 20, a material spacing adjustment mechanism 30 and a sorting mechanism 40 are arranged in sequence. The material introduction mechanism 20 includes a flattening unit installed above the conveyor belt 10 and guide plates 21 installed on both sides of the conveyor belt 10. The flattening unit includes a mounting frame 22 installed on the top side of the conveyor belt 10. A fixed driving component and a placing frame 23 slidably matched with the mounting frame 22 are installed on the mounting frame 22. The output end of the driving component is fixedly installed with the placing frame 23. The distance between the bottom of the placing frame 23 and the conveyor belt 10 is the thickness of the workpiece. The material spacing adjustment mechanism 30 is installed on one side of the guide plate 21 for adjusting the spacing of the subsequent conveyance of the workpiece. The sorting mechanism 40 is arranged at the end of the conveyor belt 10 for sorting out different types of workpieces.

[0035] The above sorting system can convey materials backward in a unified "lying flat" posture by setting the material introduction mechanism 20, preventing the materials from scratching the conveyor belt 10; by setting the material distance adjustment mechanism 30, the adjusted materials can be conveyed backward at equal intervals, preventing congestion at the rear side and being unfavorable for the sorting and processing of materials; the sorted materials after the distance adjustment process are efficiently sorted by the sorting mechanism 40; among them, the material introduction mechanism 20 adopts the design structure of a driving component, a storage rack 23, a guide plate 21, and a mounting rack 22, which can make the materials discharged inside the storage rack 23 achieve the "lying flat" posture under the indirect action of the driving component, eliminating the problem of sorting errors caused by material stacking.

[0036] Such as Figure 1 and Figure 2 As shown, specifically, the driving component includes a flattening cylinder fixedly installed on the mounting rack 22 or a driver (preferably a motor) fixedly installed on the mounting rack 22. The driver is connected to the storage rack 23 through a transmission mechanism. The transmission mechanism includes one of a gear-rack mechanism, a crank-slider mechanism, or a ball screw-nut mechanism. In this embodiment, a flattening cylinder is preferably used. Through this solution, the structure can be simple, the equipment cost is low, and the maintenance is simple.

[0037] Such as Figure 1 and Figure 2 As shown, specifically, the moving direction of the driving component driving the storage rack 23 is consistent with the material conveying direction, so as to ensure that the materials can be flattened along the conveying direction and there will be no errors in the later sorting process.

[0038] Such as Figure 1 and Figure 5 As shown, in one embodiment, the material distance adjustment mechanism 30 includes a fixing plate 31 installed at the bottom of the side wall of the guide plate 21. A driving motor 32 is installed on the fixing plate 31. A driving disk 33 is fixedly installed at the output end of the driving motor 32. A convex portion 331 is installed on the outer peripheral surface of the driving disk 33. A limiting claw 34 is rotatably installed on the fixing plate 31. An acting portion is provided on the limiting claw 34. The acting portion is elastically opened outward under the action of the convex portion 331. A return spring 35 is connected between the limiting claw 34 (preferably a ratchet claw) and the fixing plate 31. A distance adjustment component is provided on the fixing plate 31. By driving the convex portion 331 to rotate through the motor 32, the convex portion 331 intermittently acts on the acting portion of the limiting claw 34. The acting portion elastically pops out intermittently and is automatically reset under the action of the return spring 35, and then the distance adjustment component cooperates with the conveying efficiency of the conveyor belt 10 to achieve the distance adjustment effect.

[0039] Such as Figure 5As shown, specifically, the distance adjustment component includes an adjustment disk 36 rotatably mounted on the fixed plate 31. The adjustment disk 36 is circumferentially and equidistantly provided with a limiting structure (preferably a ratchet groove adapted to the ratchet pawl). The limiting structure is adapted to the limiting pawl 34. The top of the adjustment disk 36 is fixedly mounted with an adjustment member 37. The adjustment member 37 is a plurality of limiting rods circumferentially and equidistantly distributed. In this embodiment, it is preferably four limiting rods.

[0040] As Figure 1 and Figure 5 shown, wherein, the driving disk 33 and the adjustment disk 36 are both horizontally arranged. A corresponding notch is provided on the guide plate 21 at the position where the adjustment disk 36 is located. Only in this way can the adjustment disk 36 drive the limiting rod to rotate a certain angle and then perform distance adjustment on a material.

[0041] The distance adjustment process is as follows: The driving motor 32 drives the driving disk 33 to rotate. When the driving disk 33 rotates one week, the protrusion 331 will push the acting part outward. The outward push means that the limiting pawl 34 and the limiting structure are separated, so that the adjustment disk 36 is released. The conveyor belt 10 will drive the material to move backward, and then make it rotate. Under the action of the limiting rod 371, one passes through each time. When the protrusion 331 and the acting part are not in contact, the limiting pawl 34 will rotate 90° (the preferred angle in this embodiment) and then, under the action of the return spring 35, re-adapt to clamp the next material between the two limiting rods 371, and then cooperate with the conveying effect of the conveyor belt 10 to realize the distance adjustment of the material.

[0042] As Figure 1 , Figure 2 and Figure 3 shown, in one embodiment, a storage hopper 231 is arranged inside the storage rack 23. An elastic opening is arranged on one side of the bottom of the storage hopper 231. A feeding component is arranged on the top of the storage hopper 231. A plurality of attitude adjustment arc plates 232 are arranged at the bottom of the elastic opening of the storage hopper 231 in a vertically staggered manner.

[0043] For the above-mentioned material lowering processing scheme, the material inside the storage hopper 231 passes through the feeding component and is lowered from the elastic opening, and the attitude is adjusted by the attitude adjustment arc plate 232 below the elastic opening, so that the material finally falling on the conveyor belt 10 is in a "lying flat" state.

[0044] As Figure 3 and Figure 4As shown, specifically, the elastic opening includes a baffle 233 rotatably mounted on the side of the storage hopper 231. A side plate 234 is provided on the side of the baffle 233 and is rotatably arranged along the side of the storage hopper 231. The side plate 234 and the side of the storage hopper 231 are connected by an elastic telescopic member 235 (preferably a spring). The function of the feeding assembly will cause the materials inside the storage hopper 231 to move downward, causing the baffle 233 to open downward. After the lowering process is completed and the function of the feeding assembly is eliminated, the baffle 233 will be automatically reset under the action of the elastic telescopic member 235 to re-seal the material discharge opening of the storage hopper 231.

[0045] As Figure 3 and Figure 4 shown, specifically, the feeding assembly includes a driving cylinder 236 mounted on the top of the storage hopper 231. A downward pushing plate 237 is mounted at the output end of the driving cylinder 236. The downward pushing plate 237 is slidably mounted on the inner top of the storage hopper 231. A guiding frame 238 is mounted on the inner top of the storage hopper 231. The downward pushing plate 237 includes a fixed part 2371 and a movable part 2372. The fixed part 2371 is connected to the output end of the driving cylinder 236. The movable part 2372 is mounted on one side of the fixed part 2371 and is connected to the fixed part 2371 by a spring.

[0046] In the above material lowering scheme, the driving cylinder 236 drives the downward pushing plate 237 to move downward, and through the downward movement of the downward pushing plate 237, the materials are effectively lowered. The downward pushing plate 237 is designed with a movable part and a fixed part. When the downward pushing plate 237 pushes the materials downward, even if the materials are in an inclined state, if all the inclined materials are directly above the baffle 223, there will be no jamming phenomenon. If part of the materials is directly above the baffle 223 and the other part is still directly above the bottom plate of the storage hopper 231, adopting this scheme will not affect the lowering of the remaining materials. Without this structural design, there will be a jamming phenomenon.

[0047] As Figure 1 and Figure 2 、 Figure 3 shown, specifically, a top pushing assembly is provided inside the storage hopper 231. The top pushing assembly includes a top pushing plate 239 slidably mounted horizontally inside the storage hopper 231. A top pushing member 2310 is provided on the side of the top pushing plate 239 facing away from the workpiece.

[0048] In the above top pushing material scheme, the top pushing member 2310 drives the top pushing plate 239 mounted at its end to push the materials, so as to regularize the materials inside the storage hopper 231, making the materials pushed by the downward pushing plate 237 in a vertical state, which is conducive to the material lowering process.

[0049] As Figure 3As shown, in one embodiment, a number of equally spaced attitude adjustment steps are provided on the adjustment surface of the attitude adjustment arc plate 232.

[0050] During the process of lowering the above-mentioned materials, the attitude adjustment scheme can adjust the attitude of the lowered materials without any order through the attitude adjustment steps on the attitude adjustment arc plate 232, and finally make the materials in a "lying flat" state when they fall on the conveyor belt.

[0051] Such as Figure 1 and Figure 6 As shown, in one embodiment, the sorting mechanism 40 includes an OPENMV image recognition module 41 installed at the end of the conveyor belt 10 and a sorting platform 42 independent of the rear side of the end of the conveyor belt 10. A sorting turntable 43 is rotatably installed on the sorting platform 42. The driving device of the sorting turntable 43 is arranged inside the sorting platform 42. A plurality of sorting areas are circumferentially and equally spaced on the sorting turntable 43, and sorting conveyor belts 44 are installed at the sorting areas.

[0052] The above-mentioned OPENMV image recognition sorting scheme can analyze the shape state of the materials according to the OPENMV image recognition module 41, and it is conducive to realizing the effective sorting of the materials according to the shape state of the materials. The sorting objects can be materials in the shapes of triangles, circles, rectangles, etc. After cooperating with the independent sorting turntable 43, the materials on the sorting platform 42 are conveyed to the corresponding sorting areas through the sorting conveyor belt 44 for the same treatment.

[0053] The main control of the sorting is an stm32 single-chip microcomputer, which is used as the control center to control the OPENMV image recognition module 41 to recognize the shape of the thin sheet parts. For the obtained thin sheet parts, steps such as image preprocessing, image correction, and image feature extraction are carried out, and the extraction of the shape features of the thin sheet parts is completed. After recognition, the recognized materials need to be sorted.

[0054] The following provides sorting algorithms for circular and triangular shaped parts:

[0055] The algorithm for recognizing a circle is: img.find_circles(roi = A.rect(), threshold = 1800, x_margin = 10, y_margin = 10, r_margin = 10, r_min = 8, r_max = 20, r_step = 5). Use it to recognize a circle with a radius of 10 at coordinates x and y, and its radius is at most not greater than 20 and not less than 8.

[0056] The algorithm for identifying triangles is the function formula of image.find_lines([roi[, x_stride = 2[, y_stride = 1[, threshold = 1000[, theta_margin = 25[, ho_margin = 25]]]]]]), and its code meaning is: Use the Hough transform to find all lines in the image.

[0057] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0058] The above-described embodiments only express several implementation manners of the present invention, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A material sorting system, characterized in that, It includes a conveyor belt, on which a material introduction mechanism, a material spacing adjustment mechanism, and a sorting mechanism are successively arranged along the length direction. The material introduction mechanism includes a flattening unit installed above the conveyor belt and guide plates installed on both sides of the conveyor belt. The flattening unit includes a mounting frame installed on the top side of the conveyor belt. A fixed driving component and a placing frame slidably matched with the mounting frame are installed on the mounting frame. The output end of the driving component is fixedly installed with the placing frame. The distance between the bottom of the placing frame and the conveyor belt is the thickness of the workpiece. The material spacing adjustment mechanism is installed on one side of the guide plate to adjust the spacing of the subsequent conveyance of the workpiece. The sorting mechanism is arranged at the end of the conveyor belt to sort out workpieces of different types; A placing hopper is arranged inside the placing frame. An elastic opening is arranged on one side of the bottom of the placing hopper. A feeding component is arranged on the top of the placing hopper. A plurality of attitude adjustment arc plates distributed in a vertically staggered manner are arranged at the bottom of the elastic opening of the placing hopper; A number of attitude adjustment steps are arranged at equal intervals on the adjustment surface of the attitude adjustment arc plate; The elastic opening includes a baffle plate rotatably installed on the side of the placing hopper. A side plate rotatably arranged along the side of the placing hopper is arranged on the side of the baffle plate. The side plate and the side of the placing hopper are connected by an elastic telescopic member; The feeding component includes a driving cylinder installed on the top of the placing hopper. A downward pushing plate is installed at the output end of the driving cylinder. The downward pushing plate is slidably installed on the inner top of the placing hopper. A guide frame is installed on the inner top of the placing hopper. The downward pushing plate includes a fixed part and a movable part. The fixed part is connected to the output end of the driving cylinder. The movable part is installed on one side of the fixed part and is connected to the fixed part by a spring; The sorting mechanism includes an OPENMV image recognition module installed at the end of the conveyor belt and a sorting platform independent of the rear side of the end of the conveyor belt. A sorting turntable is rotatably installed on the sorting platform. The driving device of the sorting turntable is arranged inside the sorting platform. A plurality of sorting areas are circumferentially and equally spaced on the sorting turntable. Sorting conveyor belts are installed at the sorting areas; The main controller for sorting is an stm32 single-chip microcomputer, which is used as a control center to control the OPENMV image recognition module to recognize the shape of the thin sheet parts. Image preprocessing, image correction, and image feature extraction are performed on the obtained thin sheet parts to complete the extraction of the shape features of the thin sheet parts. After recognition, the recognized materials are sorted.

2. The material sorting system according to claim 1, wherein The material spacing adjustment mechanism includes a fixing plate installed at the bottom of the side wall of the guide plate. A driving motor is installed on the fixing plate. The output end of the driving motor is fixedly installed with a driving disc. A convex part is installed on the outer peripheral surface of the driving disc. A limiting claw is rotatably installed on the fixing plate. An acting part is arranged on the limiting claw. The acting part is elastically opened outward under the action of the convex part. A return spring is connected between the limiting claw and the fixing plate. A spacing adjustment component is arranged on the fixing plate.

3. The material sorting system according to claim 2, wherein The spacing adjustment component includes an adjustment disc rotatably installed on the fixing plate. Limiting structures are circumferentially and equally spaced on the adjustment disc. The limiting structures are adapted to the limiting claws. An adjusting part is fixedly installed on the top of the adjustment disc. The adjusting part is a plurality of limiting rods circumferentially and equally spaced.

4. A material sorting system according to claim 1, characterized in that, A pushing component is arranged inside the storage hopper. The pushing component includes a pushing plate that is horizontally slidably installed on the inner side of the storage hopper, and a pushing member is arranged on the side of the pushing plate facing away from the workpiece.

5. A material sorting system according to claim 1, characterized in that, The driving component includes a flattening cylinder fixedly installed on the mounting frame or a driver fixedly installed on the mounting frame. The driver is connected to the storage rack through a transmission mechanism, and the transmission mechanism includes one of a gear-rack mechanism, a crank-slider mechanism, or a lead screw-nut mechanism.

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