Anisotropic magnet and automatic sorting device for scrap

Abstract

The utility model belongs to special-shaped magnet processing technical field especially special-shaped magnet and corner material automatic sorting device, in the light of the problem that the existing sorting device cannot arrange the multiple rows of tile-shaped magnets neatly and unify the posture, the following scheme is presented, including two belt conveyors fixed connection in the top of bearing table, the top of bearing table is connected with a plurality of supports fixedly, two belt conveyors structure are same, two material guide covers fixed connection in the top of corresponding belt conveyor, material temporary storage box and cylinder II are fixedly connected in the top of corresponding support of bearing table top respectively, the end of cylinder II piston rod is fixedly connected with material push rod, in the utility model, through the structure that belt conveyor end stops in combination with batch pushing of material push rod, can make eligible tile-shaped magnet automatically form neat queue, and each row of magnets keeps the uniform posture that arc opening is consistent, end face is pasted, eliminates the artificial arrangement link, and the efficiency of magnetizing preparation before is improved greatly.

Description

Technical Field

[0001] This utility model relates to the field of irregular magnet processing technology, and in particular to an automatic sorting device for irregular magnets and scrap materials. Background Technology

[0002] As a key component in core parts such as motor rotors and sensors, the production of tile-shaped irregular magnets requires processes such as "raw material forming - sintering - sorting - magnetization". Among these processes, the sorting of irregular magnets from scrap is the core link to ensure the subsequent magnetization accuracy and product quality. Currently, the sorting machines for tile-shaped irregular magnets still have the following problems: Magnetizers need to feed tile-shaped magnets in batches in multiple neat rows with uniform posture to ensure uniform magnetization. Existing sorting devices mostly use open bins for temporary storage, where sorted tile-shaped magnets fall directly into the bins, which can easily lead to stacking and disordered posture. During subsequent manual sorting, the posture of each magnet needs to be adjusted and arranged, which not only increases labor costs but may also cause scratches on the magnet surface due to human contact. In addition, open bins cannot be replaced when the bin is full, and sorting needs to be paused when replacing an empty bin, which reduces overall production efficiency. To address this, an automatic sorting device for irregularly shaped magnets and scrap materials is proposed. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing sorting devices in which multiple rows of tile-shaped magnets cannot be neatly arranged and uniformly oriented, and to propose an automatic sorting device for irregularly shaped magnets and scrap materials.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: Automatic sorting device for irregularly shaped magnets and scrap materials, including screening protective cover, vibrating feeder and load-bearing table; A screening mechanism, which is installed inside a screening protective cover, is used to screen irregularly shaped magnets; A vibrating feeding mechanism, which is located inside a vibrating feeding disc for transporting irregularly shaped magnets; Two belt conveyors are fixedly connected to the top of the load-bearing table. Multiple supports are fixedly connected to the top of the load-bearing table. The two belt conveyors have the same structure. Two material guide covers are fixedly connected to the top of the corresponding belt conveyor; The material storage box and cylinder II are respectively fixedly connected to the top of the corresponding brackets on the top of the load-bearing table. The end of the piston rod of cylinder II is fixedly connected to a material pushing rod, which slides through the material guide cover away from the vibrating feeding plate. The material push plate is slidably connected between the two sides of the material temporary storage box; The springs are fixedly connected between the material storage box and the material push plate via spring seats; Two limiting guide plates are fixedly connected to the top of the material guide cover and one side of the belt conveyor, respectively. Corresponding movable limiting plates slide through the surfaces of the two limiting guide plates. Two tension springs are fixedly connected between the corresponding limit guide plate and the movable limit plate by pull hooks, respectively; A weight sorting mechanism is provided between two belt conveyors for sorting irregularly shaped magnets by weight.

[0005] In one possible design, the movable limiting plate includes an arc-shaped baffle, two guide rods and a limiting rod. The limiting rod and the two guide rods are fixed to the arc-shaped baffle. The limiting rod and the two guide rods slide through the corresponding limiting guide plate. One side of the arc-shaped baffle is normally in contact with the irregularly shaped magnet inside the material storage box.

[0006] In one possible design, the screening mechanism includes a vibrating screen fixedly connected between the two sides of the screening protective cover, with a vibrating motor fixedly connected to both sides of the top of the vibrating screen, and a scrap collection box inserted between the two sides of the screening protective cover, with the scrap collection box located below the vibrating screen.

[0007] In one possible design, the vibratory feeding mechanism includes an inclined track fixedly connected to the top of the vibratory feeding disc and rotating upwards, with an electromagnetic vibrator fixedly connected inside the vibratory feeding disc.

[0008] In one possible design, a material guide box that matches the track is fixedly connected to the top of the vibrating feeder, and the other end of the material guide box is fixed to one end of the material guide cover near the vibrating feeder. The size of the material guide box is matched with the size of the irregular magnet. The vibrating feeder is located below the discharge port of the vibrating screen.

[0009] In one possible design, the weight sorting mechanism includes a cylinder I fixedly connected to the upper surface of the support frame at the top of the load-bearing table. A sorting guide push cover is fixedly connected to the end of the piston rod of cylinder I. A support column is fixedly connected to the top of the load-bearing table. A weight detection bearing plate is fixedly connected to the top of the support column. A weight sensor is fixedly connected to the top of the weight detection bearing plate. The channel formed by the weight sensor and the sorting guide push cover, and the material guide covers at both ends, are matched with the channel formed by the belt conveyor mechanism.

[0010] In one possible design, a waste collection box is placed on top of the load-bearing table, located to one side of the weight sensor detector.

[0011] In one possible design, the belt conveyor includes a drive motor, a drive shaft, a driven shaft, a belt, and a frame. The drive motor is fixedly connected to one side of the frame, and one end of the drive motor's output shaft is fixed to the drive shaft of the belt conveyor. The drive shaft and the driven shaft are connected by a belt drive.

[0012] In one possible design, the material pusher plate has an arc portion on one side that matches the outer arc of the irregular magnet, and the arc radius of the material pusher rod matches the inner arc of the irregular magnet.

[0013] In one possible design, the material guide cover on the side closer to the vibrating feeder has openings at both ends and the bottom, while the material guide cover on the side farther from the vibrating feeder has openings at one end, the bottom, and both sides, with the side openings communicating with the material storage box.

[0014] In this application: The mixture containing the tile-shaped magnet and crushed scrap is fed into the vibrating screen inside the screening protective cover. The vibrating motor drives the vibrating screen to generate high-frequency vibration. The crushed scrap falls through the screen holes of the vibrating screen and into the scrap collection box inserted below. The tile-shaped magnet, due to its large size, remains on the surface of the vibrating screen and slides towards the discharge port of the vibrating screen with the vibration. The tile-shaped magnets that slide out of the vibrating screen outlet fall into the vibrating feed pan below. The electromagnetic vibrator inside the vibrating feed pan (not shown in the figure) is activated, causing the pan surface to vibrate in a directional manner. This causes the tile-shaped magnets to move along the rotating and rising inclined track at the top. The vibrating feed pan is existing technology and will not be described in detail here. Because the width of the inclined track is matched with the thickness of the tile-shaped magnets, the tile-shaped magnets are only allowed to pass with the "arc opening facing the inside of the track". Other orientations will be blocked by the edge of the track due to the mismatch in width, and the magnets will slide back to the bottom of the pan for readjustment, thus achieving initial orientation calibration. The tile-shaped magnet rises to the top along the inclined track and enters the material guide box that matches the track. The inner cavity size of the material guide box is matched with the outer clearance of the tile-shaped magnet, which can further constrain the posture of the tile-shaped magnet and prevent it from turning over during the conveying process. The other end of the material guide box is fixedly connected to the material guide cover near the vibrating feed plate. The tile-shaped magnet enters the belt conveyor inside the material guide cover directly through the material guide box. The drive motor of the belt conveyor starts and drives the active shaft to rotate. The driven shaft rotates synchronously through the belt, smoothly conveying the tile-shaped magnets in the material guide hood to the weight sorting mechanism between the two belt conveyors. The tile-shaped magnets move with the belt to the weight detection bearing plate. The weight sensor detector on the top of the weight detection bearing plate detects the weight of the magnets in real time and determines whether they meet the qualified standards. If the weight sensor detects that the weight of the tile magnet is unqualified, cylinder I is immediately activated. Its piston rod pushes the sorting guide cover to move, which can smoothly push the unqualified magnet away from the weight detection support plate and fall into the waste collection box placed next to it. If the detection is qualified, it waits for the next magnet to arrive and pushes the tile magnet to the next section of the belt conveyor. When the qualified tile magnet is transported to the end of the next section of the belt conveyor, it is stopped by the material guide cover at the end and cannot continue to move forward. The subsequently transported qualified tile magnets are piled up at the end of the belt conveyor until they are lined up in a row. When the tile-shaped magnets at the end of the belt conveyor are arranged in a row, cylinder II is started. Its piston rod drives the material pushing rod to slide towards the material storage box. The radius of the arc of the material pushing rod matches the inner side of the arc of the tile-shaped magnet, which can fit against the inner side of the magnet and push the entire row of magnets synchronously. During the pushing process, the entire row of magnets squeezes the arc-shaped baffle of the moving limit plate, which drives the limit plate to slide along the guide rod, opening the feed port of the material storage box. The entire row of tile-shaped magnets is smoothly pushed into the material storage box. The limit rod closes the feed port of the storage box under the pull of the tension spring, and one side of the entire row of tile-shaped magnets abuts against the arc-shaped baffle. After the tile-shaped magnet enters the material storage box, the material pusher plate pushes the magnet towards the feed port under the elastic force of the spring. The arc part on one side of the material pusher plate fits against the outer arc of the tile-shaped magnet, so that the magnet normally abuts against the arc baffle of the moving limit plate, ensuring that each row of magnets is neatly arranged without gaps. As subsequent rows of magnets are continuously pushed in, the material pusher plate gradually compresses the spring until the material storage box is full, completing the batch storage. Once the material storage box is filled with neatly arranged qualified tile-shaped magnets, the staff can directly remove the material storage box from the support of the load-bearing table and put it into the magnetizer. At the same time, the empty material storage box is installed back in its original position to continue receiving subsequent sorted tile-shaped magnets.

[0015] Beneficial effects: In this utility model, the automatic sorting device for irregularly shaped magnets and scrap materials, through the coordinated use of components such as tension springs, material push plates, moving limit plates, and limit guide plates, combined with the structure of belt conveyor end-stopping and material push rod batch pushing, can automatically arrange qualified tile-shaped magnets into a regular queue, and each row of magnets maintains a uniform posture with consistent arc opening orientation and end face fit. The tile-shaped magnets temporarily stored by this device can directly meet the requirements of multiple rows of neat feeding of the magnetizer, eliminating the manual sorting process and greatly improving the preparation efficiency before magnetization. In this utility model, the automatic sorting device for irregularly shaped magnets and scrap materials uses a combination of components such as a material pushing rod, a material pushing plate, a limiting guide plate, and a moving limiting plate. The radius of the arc of the material pushing rod matches the inner side of the arc of the tile-shaped magnet, and one side of the material pushing plate is provided with an arc part that fits against the outer side of the magnet's arc. The combination of the two can firmly constrain the magnet's posture during pushing and temporary storage, preventing the magnet from rotating or shifting in the temporary storage box, and effectively reducing the number of defective magnetized products caused by posture shift. In this invention, the structure of stopping the belt conveyor at the end and pushing the material in batches with the push rod can automatically arrange qualified tile-shaped magnets into a regular queue. Each row of magnets maintains a uniform posture with the arc opening facing the same direction and the end face fitting together, eliminating the manual sorting process and greatly improving the efficiency of preparation before magnetization. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the automatic sorting device for irregularly shaped magnets and scrap materials proposed in this utility model. Figure 2 This is a partially magnified structural diagram of the automatic sorting device for irregularly shaped magnets and scrap materials proposed in this utility model. Figure 3 This is a partial cross-sectional view of the automatic sorting device for irregularly shaped magnets and scrap materials proposed in this utility model. Figure 4 This is a partial view of the automatic sorting device for irregularly shaped magnets and scrap materials proposed in this utility model.

[0017] In the diagram: 1. Scrap collection box; 2. Vibrating motor; 3. Vibrating screen; 4. Screening protective cover; 5. Vibrating feeder; 501. Track; 6. Material guide box; 7. Drive motor; 8. Waste collection box; 9. Cylinder I; 10. Material temporary storage box; 11. Spring; 12. Cylinder II; 13. Load-bearing table; 14. Belt conveyor; 15. Weight detection bearing plate; 16. Weight sensor detector; 17. Material guide cover; 18. Sorting guide push cover; 19. Material push rod; 20. Limiting guide plate; 21. Moving limit plate; 2101. Arc-shaped baffle; 2102. Limiting rod; 2103. Guide rod; 22. Tension spring; 23. Material push plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In one implementation case, refer to Figures 1-4 The automatic sorting device includes: a screening protective cover 4, a vibrating feeding plate 5, and a load-bearing table 13; A screening mechanism is installed inside the screening protective cover 4 for screening irregularly shaped magnets; A vibrating feeding mechanism is installed inside the vibrating feeding plate 5 for transporting irregularly shaped magnets; In this embodiment, two belt conveyors 14 are fixedly connected to the top of the load-bearing table 13. Multiple supports are fixedly connected to the top of the load-bearing table 13. The two belt conveyors 14 have the same structure. Two material guide covers 17 are fixedly connected to the top of the corresponding belt conveyor 14; In particular, the material storage box 10 and the cylinder II 12 are respectively fixedly connected to the top of the corresponding bracket on the top of the load-bearing table 13. The end of the piston rod of the cylinder II 12 is fixedly connected to the material pushing rod 19, which slides through the material guide cover 17 away from the vibrating feeding plate 5. The material push plate 23 is slidably connected between the two sides of the material storage box 10; Spring 11 is fixedly connected between material storage box 10 and material push plate 23 via spring seat; In addition, two limiting guide plates 20 are fixedly connected to the top of the material guide cover 17 and one side of the belt conveyor 14, respectively, and corresponding movable limiting plates 21 slide through the surfaces of the two limiting guide plates 20. Two tension springs 22 are fixedly connected between the corresponding limiting guide plate 20 and the movable limiting plate 21 by hooks respectively. The tension springs 22 connect the limiting guide plate 20 and the movable limiting plate 21, providing a restoring force to the movable limiting plate 21, ensuring that the limiting structure can automatically return to its original position after the magnet is pushed in the temporary storage stage, and ensuring the continuity of temporary storage in subsequent batches. A weight sorting mechanism is provided between two belt conveyors 14 for sorting irregularly shaped magnets by weight.

[0020] It should be noted that the movable limiting plate 21 includes an arc-shaped baffle 2101, two guide rods 2103 and a limiting rod 2102. The limiting rod 2102 and the two guide rods 2103 are fixed to the arc-shaped baffle 2101. The limiting rod 2102 and the two guide rods 2103 slide through the corresponding limiting guide plate 20 to ensure that the arc-shaped baffle 2101 moves only in a preset direction, avoiding magnet jamming caused by the offset of the limiting structure. One side of the arc-shaped baffle 2101 is normally in contact with the irregular magnet inside the material storage box 10.

[0021] This application can be used in the field of irregular magnet processing technology, as well as in other fields applicable to this application.

[0022] In another implementation case, refer to Figures 1-4An automatic sorting device for irregularly shaped magnets and scrap materials is applied to the field of irregularly shaped magnet processing technology. The screening mechanism includes a vibrating screen 3 fixedly connected between the two sides of the screening protective cover 4. Vibrating motors 2 are fixedly connected to the top two sides of the vibrating screen 3. Scrap material collection boxes 1 are inserted between the two sides of the screening protective cover 4. The scrap material collection boxes 1 are located below the vibrating screen 3. The vibrating motors 2 drive the vibrating screen 3 to vibrate at high frequency. Separation is achieved by utilizing the size difference between the tile-shaped magnets and the scrap materials. The scrap materials fall through the screen holes into the scrap material collection boxes 1, while the magnets remain on the screen surface and slide out.

[0023] In this embodiment, the vibratory feeding mechanism includes an inclined track 501 that is fixedly connected to the top of the vibratory feeding disk 5 and rotates upwards. An electromagnetic vibrator is fixedly connected inside the vibratory feeding disk 5.

[0024] A material guide box 6 matching the track 501 is fixedly connected to the top of the vibrating feeder 5. The other end of the material guide box 6 is fixed to one end of the material guide cover 17 near the vibrating feeder 5. The size of the material guide box 6 is matched with the size of the irregular magnet. The vibrating feeder 5 is located below the discharge port of the vibrating screen 3. The material guide box 6 is precisely connected to the inclined track 501 and the material guide cover 17. The inner cavity size matches the shape of the magnet, constraining the magnet's posture and preventing it from turning over during the conveying process.

[0025] In particular, the weight sorting mechanism includes a cylinder I9 fixedly connected to the upper surface of the support frame at the top of the load-bearing table 13. The end of the piston rod of the cylinder I9 is ​​fixedly connected to a sorting guide push cover 18. A support column is fixedly connected to the top of the load-bearing table 13. A weight detection bearing plate 15 is fixedly connected to the top of the support column. A weight sensor detector 16 is fixedly connected to the top of the weight detection bearing plate 15. The channel formed by the weight sensor detector 16 and the sorting guide push cover 18 and the material guide covers 17 at both ends are matched with the channel formed by the belt conveyor 14. The weight sensor detector 16 detects the weight of the magnet and determines whether it is qualified. The cylinder I9 drives the sorting guide push cover 18 to push the unqualified magnet away from the detection area.

[0026] A waste collection box 8 is placed on top of the load-bearing table 13, and the waste collection box 8 is located on one side of the weight sensor detector 16.

[0027] In addition, the belt conveyor 14 includes a drive motor 7, a drive shaft, a driven shaft, a belt, and a frame. The drive motor 7 is fixedly connected to one side of the frame, and one end of the output shaft of the drive motor 7 is fixed to the drive shaft of the belt conveyor 14. The drive shaft and the driven shaft are connected by belt drive.

[0028] The material pusher plate 23 has an arc portion on one side that matches the outer arc of the irregular magnet. The spring 11 provides elastic force to make the pusher plate continuously squeeze the magnet, ensuring that the magnets are neatly arranged without gaps when temporarily stored. The arc radius of the material pusher rod 19 matches the inner arc of the irregular magnet, and it fits the inner side of the magnet when pushing, avoiding uneven pushing force that could cause the magnet to deform or shift its posture.

[0029] It should be noted that the material guide cover 17 on the side closer to the vibrating feeder 5 has openings at both ends and the bottom, while the material guide cover 17 on the side farther from the vibrating feeder 5 has openings at one end, the bottom, and both sides. The openings on both sides are connected to the material storage box 10.

[0030] However, as is well known to those skilled in the art, the working principles and wiring methods of the vibratory motor, vibratory feeder, drive motor, cylinder I, cylinder II and belt conveyor are all conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0031] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic sorting device for irregularly shaped magnets and scrap materials, characterized in that, include: Screening protective cover (4), vibrating feeder (5) and load-bearing table (13); The screening mechanism is set inside the screening protective cover (4) for screening irregularly shaped magnets; A vibrating feeding mechanism is installed inside the vibrating feeding plate (5) for transporting irregularly shaped magnets; Two belt conveyors (14) are fixedly connected to the top of the load-bearing table (13). Multiple supports are fixedly connected to the top of the load-bearing table (13). The two belt conveyors (14) have the same structure. Two material guide covers (17) are fixedly connected to the top of the corresponding belt conveyor (14); Material storage box (10) and cylinder II (12) are respectively fixedly connected to the top of the corresponding bracket on the top of the load-bearing table (13). The end of the piston rod of cylinder II (12) is fixedly connected to a material push rod (19). The material push rod (19) slides through the material guide cover (17) away from the vibrating feeder (5). The material push plate (23) is slidably connected between the two sides of the material storage box (10); Spring (11) is fixedly connected between material storage box (10) and material push plate (23) through spring seat; Two limiting guide plates (20) are fixedly connected to the top of the material guide cover (17) and one side of the belt conveyor (14), respectively. The surfaces of the two limiting guide plates (20) are slidably penetrated by corresponding movable limiting plates (21). Two tension springs (22) are fixedly connected between the corresponding limiting guide plate (20) and the movable limiting plate (21) by hooks respectively; A weight sorting mechanism is provided between two belt conveyors (14) for sorting irregularly shaped magnets by weight.

2. The automatic sorting device for irregularly shaped magnets and scrap materials according to claim 1, characterized in that, The movable limiting plate (21) includes an arc-shaped baffle (2101), two guide rods (2103) and a limiting rod (2102). The limiting rod (2102) and the two guide rods (2103) are fixed to the arc-shaped baffle (2101). The limiting rod (2102) and the two guide rods (2103) slide through the corresponding limiting guide plate (20). One side of the arc-shaped baffle (2101) normally abuts against the irregular magnet inside the material storage box (10).

3. The automatic sorting device for irregularly shaped magnets and scrap materials according to claim 1, characterized in that, The screening mechanism includes a vibrating screen (3) fixedly connected between the two sides of the screening protective cover (4). Vibrating motors (2) are fixedly connected to the top two sides of the vibrating screen (3). A scrap collection box (1) is inserted between the two sides of the screening protective cover (4). The scrap collection box (1) is located below the vibrating screen (3).

4. The automatic sorting device for irregularly shaped magnets and scrap materials according to claim 1, characterized in that, The vibrating feeding mechanism includes an inclined track (501) fixedly connected to the top of the vibrating feeding plate (5) and rotating upwards, and an electromagnetic vibrator is fixedly connected inside the vibrating feeding plate (5).

5. The automatic sorting device for irregularly shaped magnets and scrap materials according to claim 4, characterized in that, The top of the vibrating feeder (5) is fixedly connected to a material guide box (6) that matches the track (501). The other end of the material guide box (6) is fixed to one end of the material guide cover (17) near the vibrating feeder (5). The size of the material guide box (6) is matched with the size of the irregular magnet. The vibrating feeder (5) is located below the discharge port of the vibrating screen (3).

6. The automatic sorting device for irregularly shaped magnets and scrap materials according to claim 1, characterized in that, The weight sorting mechanism includes a cylinder I (9) fixedly connected to the upper surface of the support on the top of the load-bearing table (13). The end of the piston rod of the cylinder I (9) is fixedly connected to a sorting guide push cover (18). The top of the load-bearing table (13) is fixedly connected to a support column. The top of the support column is fixedly connected to a weight detection bearing plate (15). The top of the weight detection bearing plate (15) is fixedly connected to a weight sensor detector (16). The channel formed by the weight sensor detector (16) and the sorting guide push cover (18) and the material guide covers (17) at both ends are matched with the channel formed by the belt conveyor (14).

7. The automatic sorting device for irregularly shaped magnets and scrap materials according to claim 6, characterized in that, A waste collection box (8) is placed on top of the load-bearing table (13), and the waste collection box (8) is located on one side of the weight sensor detector (16).

8. The automatic sorting device for irregularly shaped magnets and scrap materials according to claim 1, characterized in that, The belt conveyor (14) includes a drive motor (7), a drive shaft, a driven shaft, a belt, and a frame. The drive motor (7) is fixedly connected to one side of the frame. One end of the output shaft of the drive motor (7) is fixed to the drive shaft of the belt conveyor (14). The drive shaft and the driven shaft are connected by belt drive.

9. The automatic sorting device for irregularly shaped magnets and scrap materials according to claim 1, characterized in that, The material pusher plate (23) has an arc portion on one side that matches the outer arc of the irregular magnet, and the arc radius of the material pusher rod (19) matches the inner arc of the irregular magnet.

10. The automatic sorting device for irregularly shaped magnets and scrap materials according to claim 1, characterized in that, The material guide cover (17) on the side near the vibrating feeder (5) has openings at both ends and the bottom, and the material guide cover (17) on the side away from the vibrating feeder (5) has openings at one end, the bottom and both sides, with the openings on both sides communicating with the material storage box (10).

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