Double-bin automatic medicine tablet dropping feeder

Abstract

The application discloses a double-bin automatic medicine plate falling device, and relates to the technical field of packaging machinery.The device comprises a frame body top provided with a conveying plate, two groups of width-adjustable conveying channels arranged on the conveying plate, and a walking assembly arranged on the conveying plate and used for driving medicine plates in the conveying channels to walk; the bottom of the frame body is provided with a bottom plate, two sliding plates are arranged on the bottom plate, and the spacing between the two sliding plates is adjustable; the tail end of the conveying channel is provided with a falling channel used for medicine plate falling, the falling channel is formed by a plurality of interval-distributed falling guide plates, the bottoms of the falling guide plates on the two sides are connected with the two sliding plates respectively, and the falling guide plates and the sliding plates are adjustably arranged along the walking direction of the medicine plates; and the bottom of the falling channel is provided with a falling limiting assembly used for controlling the falling amount of the medicine plates in the falling channel.

Description

Technical Field

[0001] This application relates to the field of packaging machinery technology, and in particular to a dual-compartment automatic blister packer. Background Technology

[0002] In the current pharmaceutical packaging field, blister packs account for a large proportion of drug packaging. Blister packs, also commonly known as blister packaging or blister tablets, are a widely used packaging form for pharmaceuticals, especially solid dosage forms such as tablets and capsules. They are typically composed of multiple layers of materials, designed to protect the drug from external environmental influences and provide convenient dosage control and identification. A typical blister pack structure includes a cavity layer made of thermoformed plastic (such as polyvinyl chloride, PVC) and a backing layer of aluminum foil or cardboard.

[0003] Medicine blister packs have multiple important functions and advantages in the pharmaceutical field, such as: convenient use, as one blister pack is pressed each time medication is needed, which is hygienic and convenient; protection of medicines, as the good sealing can prevent moisture, light, contamination or oxidation of medicines, and ensure the stability of medicines within their expiration date; clear information, as the back of the medicine blister pack usually has important information such as the medicine name, production batch number, and expiration date printed on it; and easy to carry, as it is lighter and more space-saving than bottled medicines.

[0004] After the blister packs are produced, they need to be sorted and divided, and the number of packs to be packaged is determined according to product requirements. The blister pack feeder is a crucial piece of equipment. The original feeders used gravity feeding combined with mechanical propulsion to deliver the blister packs to the conveyor belt. This method was sufficient for feeding slower-moving blister packs. However, with increasing production demands, the original single-compartment feeders, designed to feed only one stack of blister packs at a time, became inefficient and unable to meet the increased production speed. This necessitated the use of two feeders, which required a larger space and a longer conveyor, resulting in a larger footprint and higher costs. Furthermore, the feed compartment size was not adjustable, limiting the processing to single-size blister packs and making it unsuitable for other sizes. Consequently, manufacturers often needed multiple feeders for various blister pack sizes, further increasing equipment costs. Utility Model Content

[0005] To address the aforementioned problems, improve the feeding efficiency of the blister packer, better match the feeder to different blister pack products, reduce equipment costs, and increase production efficiency, this application provides a dual-compartment automatic blister packer.

[0006] The technical solution of the dual-compartment automatic blister packer provided in this application is as follows.

[0007] A dual-compartment automatic blister packer includes: a frame; The top of the frame is provided with a conveyor plate, the conveyor plate is provided with two sets of adjustable width conveyor channels, and the conveyor plate is provided with a walking component for moving the medicine plates in the conveyor channels. The bottom of the frame is provided with a base plate, and the base plate is provided with two sliding plates, the distance between the two sliding plates being adjustable; The end of the conveying channel is provided with a material discharge channel for discharging medicine blister packs. The material discharge channel is formed by several spaced material discharge guide plates. The bottom of the material discharge guide plates on both sides is connected to two sliding plates respectively, and the material discharge guide plates and sliding plates are adjustable along the direction of medicine blister pack travel. The bottom of the feeding channel is equipped with a feeding limit component for controlling the amount of medicine blister packs fed into the feeding channel.

[0008] By adopting the above technical solution, and by setting an adjustable-width conveying channel, it can be used to guide medicine blister packs of different sizes. Combined with the walking component, it can drive the medicine blister packs to move. The dropping channel is formed by several spaced-apart dropping guide plates, which guide the dropping of the medicine blister packs after they reach the end of the conveying channel. The bottom of each dropping guide plate on both sides is connected to two sliding plates. The distance between the dropping guide plates and the sliding plates is adjustable along the direction of medicine blister pack movement, allowing for adjustment of the length of the dropping channel to accommodate medicine blister packs of different lengths. The distance between the two sliding plates is also adjustable, allowing for adjustment of the dropping channel width to accommodate medicine blister packs of different widths. The dropping limit component controls the amount of medicine blister packs dropping within the dropping channel. In summary, setting up dual conveying channels and dual dropping channels increases the dropping speed. Furthermore, the adjustable dimensions of the conveying and dropping channels allow the same dropping device to handle various sizes of medicine blister packs, improving the device's adaptability to different medicine blister pack products, resulting in better matching, reduced equipment costs, and increased production efficiency.

[0009] Optionally, the conveying channel consists of two spaced conveying baffles, and the distance between the two conveying baffles is adjustable on the conveying plate.

[0010] Optionally, the conveyor plate has a first waist-shaped hole along its width direction, and the conveyor baffle is connected to the conveyor plate by a first bolt.

[0011] By adopting the above technical solution, a first oblong hole is provided on the conveying plate, and the conveying baffle is connected to the conveying plate by the first bolt. The connection method of the conveying baffle is simple and reliable. Furthermore, by loosening the first bolt, the position of the conveying baffle can be adjusted along the first oblong hole, thereby realizing the adjustment of the distance between the two conveying baffles. The width of the conveying channel can be adjusted according to the different widths of the medicine plates. The adjustment method is simple, reliable, and easy to operate.

[0012] Optionally, the walking assembly includes a walking frame disposed above the conveyor plate, and a walking conveyor disposed on the walking frame corresponding to the conveying channel above the conveying channel. The walking conveyor includes two walking wheels disposed on the walking frame, and a conveyor belt disposed between the two walking wheels to contact the medicine plate in the conveying channel. The walking wheels are driven to rotate by a first drive motor disposed on the walking frame.

[0013] By adopting the above technical solution, the walking wheels are driven to rotate by the first drive motor, which in turn drives the conveyor belt to move. This allows the conveyor belt, which is in contact with the medicine blister pack, to move the medicine blister pack within the conveying channel, thus realizing the conveying of the medicine blister pack.

[0014] Optionally, one side of the traveling frame is hinged to the conveyor plate.

[0015] By adopting the above technical solution, the walking frame is hinged to the conveyor plate, allowing the walking assembly to be flipped up as a whole and opened, which facilitates the maintenance and assembly of the conveyor plate and the components and mechanisms below the conveyor plate.

[0016] Optionally, a slide rail is provided on the base plate along the width direction, and the bottom of the two sliding plates slides in cooperation with the slide rail via a slider. A forward and reverse rotary screw is rotatably provided on the base plate, and the two ends of the forward and reverse rotary screw are respectively connected to the two sliding plates. A rotary handle is provided at the end of the forward and reverse rotary screw.

[0017] By adopting the above technical solution, the forward and reverse screws can be controlled by adjusting the rotating handle to drive the forward and reverse screws to rotate, which in turn can drive the two sliding plates to move closer or further apart, thereby realizing the width adjustment between the two sliding plates and the width adjustment of the material feeding channel. This is suitable for feeding medicine plates of different widths.

[0018] Optionally, four material guide plates are provided, which are angle steel-shaped and located at the four corners respectively. A second waist-shaped hole is opened on the sliding plate along the walking direction of the medicine plate. The bottom of the material guide plate is connected to the sliding plate by a second bolt.

[0019] By adopting the above technical solution, the material guide plate can be connected to the sliding plate by the second bolt through the opening of the second oblong hole on the sliding plate. By loosening the second bolt, the position of the material guide plate can be adjusted, thereby realizing the adjustment of the material channel along the length of the medicine plate. This connection method is simple and reliable, and the adjustment of the material channel size is simple and easy to operate.

[0020] Optionally, a discharge port for discharging medicine blister packs is provided at the end of the conveying channel on the conveying plate, and a first detection switch is provided at the discharge port.

[0021] By adopting the above technical solution, the opening of the feeding port facilitates the falling of the medicine blister pack. The setting of the first detection switch can detect whether a medicine blister pack is falling.

[0022] Optionally, the material discharge limiting component includes fan-shaped rotary blades. Rotary blade shafts are provided on both sides of the material discharge channel on the sliding plate. Two fan-shaped rotary blades are provided at intervals at both ends of the rotary blade shafts, and the two fan-shaped rotary blades are distributed at equal angles. A driven pulley is provided on the rotary blade shaft. A second drive motor is provided on the base plate. The second drive motor drives the driven pulley to rotate through belt drive.

[0023] By adopting the above technical solution, the second drive motor drives two fan-shaped blades that are spaced apart vertically to rotate. The two fan-shaped blades are distributed at equal angles. When the medicine slab falls in the material drop channel, it can land on the fan-shaped blades. As the fan-shaped blades rotate, the two fan-shaped blades can alternately support the falling medicine slabs vertically. After the medicine slab is released from the support of the lower fan-shaped blade, it can fall to achieve the dropping of the medicine. In this way, a certain number of medicine slabs can be dropped in batches, which ensures the control of the amount of medicine slabs dropped.

[0024] In summary, this application includes at least the following beneficial effects: 1. This application utilizes an adjustable-width conveyor channel to guide blister packs of different sizes. Combined with the walking assembly, this allows the blister packs to move. The dropping channel is formed by several spaced-apart dropping guides, which guide the dropping of the blister packs after they reach the end of the conveyor channel. The bottoms of the dropping guides on both sides are connected to two sliding plates. The distance between the dropping guides and the sliding plates is adjustable along the direction of the blister pack's movement, allowing for adjustment of the length of the channel to accommodate blister packs of different lengths. The distance between the two sliding plates is also adjustable, allowing for adjustment of the dropping channel width to accommodate blister packs of different widths. In summary, the dual conveyor and dropping channels increase the dropping speed. Furthermore, the adjustable dimensions of the conveyor and dropping channels allow the same feeder to handle various sizes of blister packs, improving its adaptability to different blister pack products, resulting in better matching, reduced equipment costs, and increased production efficiency.

[0025] 2. In this application, the walking wheels are driven to rotate by the first drive motor, which in turn drives the conveyor belt to move. This allows the conveyor belt, which is in contact with the blister packs, to move the blister packs within the conveying channel, thus realizing the conveying of the blister packs. One side of the walking frame is hinged to the conveyor plate, allowing the walking assembly to be flipped up and opened, facilitating the maintenance and assembly of the conveyor plate and the components and mechanisms below it.

[0026] 3. In this application, by setting the forward and reverse screws, the forward and reverse screws can be rotated by controlling the adjustment of the rotating handle, which in turn can drive the two sliding plates to move closer or further apart, realizing the width adjustment between the two sliding plates and the width adjustment of the material feeding channel. It is suitable for feeding medicine plates of different widths, and the adjustment operation is simple.

[0027] 4. In this application, a second drive motor drives two fan-shaped blades that are spaced apart vertically to rotate. The two fan-shaped blades are distributed at equal angles. When the medicine slab falls in the material drop channel, it can land on the fan-shaped blades. As the fan-shaped blades rotate, the two fan-shaped blades can alternately support the falling medicine slabs vertically. After the medicine slab is released from the support of the lower fan-shaped blade, it can fall to achieve the material drop. In this way, a certain number of medicine slabs can be kept falling in batches, thus ensuring the control of the amount of medicine slabs dropped. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of a dual-compartment automatic blister packer (including the housing).

[0030] Figure 2 This is a schematic diagram of another perspective of a dual-compartment automatic blister packer (including the housing).

[0031] Figure 3 This is a schematic diagram of a dual-compartment automatic blister packer.

[0032] Figure 4 This is a schematic diagram of another perspective of a dual-compartment automatic blister packer.

[0033] Figure 5 This is a schematic diagram of the main structure of a dual-compartment automatic blister packer.

[0034] Figure 6This is a schematic diagram of the left side of a dual-compartment automatic blister packer.

[0035] Figure 7 This is a schematic diagram of the right side of a dual-compartment automatic blister packer.

[0036] Figure 8 This is a top view schematic diagram of a dual-compartment automatic blister packer.

[0037] Figure 9 This is another structural diagram of a dual-compartment automatic blister packer.

[0038] Figure 10 This is a schematic diagram of a dual-compartment automatic blister packer (when the walking frame is flipped up and opened).

[0039] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Conveyor plate; 3. Base plate; 4. Conveyor baffle; 5. Discharge port; 6. Walking frame; 7. Walking wheel; 8. Conveyor belt; 9. First drive motor; 10. Second detection switch; 11. Sliding plate; 12. Slide rail; 13. Forward and reverse rotary screw; 14. Rotary handle; 15. Discharge guide plate; 16. Second oblong hole; 17. Fan-shaped vane; 18. Driven pulley; 19. Second drive motor. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] The following is in conjunction with the appendix Figures 1 to 10 This application will be described in further detail.

[0042] This application discloses a dual-compartment automatic blister packer.

[0043] Reference Figures 1 to 10 A dual-compartment automatic blister packer includes: a frame 1, a conveying channel, a traveling assembly, a dropping channel, and a dropping limit assembly.

[0044] A conveyor plate 2 is installed at the top of the frame 1, and a base plate 3 is installed at the bottom of the frame 1.

[0045] There are two sets of conveying channels, which are spaced apart on the conveying plate 2, and the width of the conveying channels can be adjusted.

[0046] The conveying channel consists of two spaced-apart conveying baffles 4. A first oblong hole is provided on the conveying plate 2 along the width direction. The conveying baffles 4 are connected to the conveying plate 2 by a first bolt. The connection method of the conveying baffles 4 is simple and reliable. Furthermore, by loosening the first bolt, the position of the conveying baffles 4 can be adjusted along the first oblong hole, thereby adjusting the distance between the two conveying baffles 4. The width of the conveying channel can be adjusted according to the width of the medicine plates. The adjustment method is simple, reliable, and easy to operate.

[0047] A discharge port 5 for dropping medicine blister packs is provided at the end of the conveying channel on the conveying plate 2, and a first detection switch is provided at the discharge port 5. The opening of the discharge port 5 facilitates the falling of medicine blister packs, and the setting of the first detection switch can detect whether medicine blister packs are falling.

[0048] The traveling assembly includes a traveling frame 6 located above the conveyor plate 2. A traveling conveyor is mounted on the traveling frame 6 above the conveying channel. The traveling conveyor includes two traveling wheels 7 mounted on the traveling frame 6, each with two annular grooves. Two conveyor belts 8 are installed between the two traveling wheels 7. The cross-section of the conveyor belts 8 is circular. The two conveyor belts 8 are distributed in the two annular grooves to prevent deviation and detachment. The conveyor belts 8 contact the medicine blister packs in the conveying channel. One of the traveling wheels 7 is driven to rotate by a first drive motor 9 mounted on the traveling frame 6. The rotation of the traveling wheel 7 by the first drive motor 9 drives the conveyor belt 8, enabling the conveyor belt 8 in contact with the medicine blister packs to move within the conveying channel, thus realizing the conveying of the medicine blister packs.

[0049] One side of the walking frame 6 is hinged to one side of the top of the frame 1, and the walking frame 6 is hinged to the conveyor plate 2, so that the walking assembly can be flipped up as a whole and opened, which facilitates the maintenance and assembly of the conveyor plate 2 and the components and mechanisms below the conveyor plate 2. When running, it is in the lowered state, and the conveyor belt 8 can contact the medicine plate in the conveying channel.

[0050] A second detection switch 10 is provided on one side of the top of the frame 1 to detect whether the walking module is flipped up, in the lowered state or in the open state.

[0051] The base plate 3 is provided with two sliding plates 11, and the distance between the two sliding plates 11 is adjustable.

[0052] A slide rail 12 is provided on the base plate 3 along the width direction (perpendicular to the blister pack conveying direction). The bottoms of two sliding plates 11 are slidably engaged with the slide rail 12 via sliders. A forward and reverse rotary screw 13 is rotatably mounted on the base plate 3. The two ends of the forward and reverse rotary screw 13 are respectively connected to the two sliding plates 11, and a rotary handle 14 is provided at the end of the forward and reverse rotary screw 13. By controlling and adjusting the rotary handle 14, the forward and reverse rotary screw 13 can be rotated, thereby causing the two sliding plates 11 to move closer or further apart, realizing the width adjustment between the two sliding plates 11 and the width adjustment of the material feeding channel, which is suitable for feeding blister packs of different widths.

[0053] The number of material discharge channels is the same as that of the conveying channels, located at the end of the conveying channels. The tops of the two material discharge channels are located at the two material discharge ports 5, which are used for discharging the medicine blister packs.

[0054] The material feeding channel is formed by four spaced-apart feeding guide plates 15. The feeding guide plates 15 are angle steel shaped and located at the four corners, with a rectangular horizontal cross-section. A second oblong hole 16 is provided on the sliding plate 11 along the direction of the medicine plate's movement. The bottom of the feeding guide plates 15 on both sides is connected to the two sliding plates 11 respectively by second bolts, tightened with wing nuts. Through the second oblong holes 16 on the sliding plates 11, the feeding guide plates 15 can be connected to the sliding plates 11 by the second bolts. By loosening the second bolts, the position of the feeding guide plates 15 can be adjusted, thus adjusting the feeding channel along the length of the medicine plate. This connection method is simple and reliable, and the adjustment of the feeding channel size is easy to operate.

[0055] The material feeding limit component is located near the bottom of the feeding channel and is used to control the amount of medicine blister packs fed into the feeding channel.

[0056] The material feeding limiting assembly includes a fan-shaped rotary blade 17 (or a semi-circular rotary blade). Rotary blade shafts are provided on both sides of the material feeding channel on the sliding plate 11. The two sets of material feeding channels are provided with four rotary blade shafts. The upper and lower ends of the rotary blade shafts pass through the sliding plate 11. Two fan-shaped rotary blades 17 are spaced apart at the upper and lower ends of the rotary blade shafts. The vertical distance between the two fan-shaped rotary blades 17 is the thickness of one medicine plate. The two fan-shaped rotary blades 17 are distributed at equal angles. A driven pulley 18 is provided on the rotary blade shaft. A second drive motor 19 is provided on the base plate 3. The second drive motor 19 drives the four driven pulleys 18 to rotate through belt drive. At the same time, guide pulleys and tension pulleys are installed on the base plate 3 and the sliding plate 11 for guiding and tensioning the synchronous belt. The second drive motor 19 drives two fan-shaped blades 17 that are spaced apart vertically to rotate. The two fan-shaped blades 17 are evenly distributed. When the medicine slab falls in the material drop channel, it can land on the fan-shaped blades 17. As the fan-shaped blades 17 rotate, the two fan-shaped blades 17 can alternately support the falling medicine slab. After the medicine slab is released from the support of the lower fan-shaped blade 17, it can fall to achieve the dropping of the medicine. In this way, a certain number of medicine slabs can be dropped in batches, which ensures the control of the amount of medicine slabs dropped.

[0057] The feeder in this embodiment also includes housings (protective plates) installed in various parts for shielding and protection, and can also be more neat and improve aesthetics.

[0058] In this application, an adjustable-width conveying channel is provided to guide blister packs of different sizes. Combined with the walking assembly, it can drive the blister packs to move. The dropping channel is formed by several spaced-apart dropping guide plates 15, which guide the dropping of the blister packs after they reach the end of the conveying channel. The bottoms of the dropping guide plates 15 on both sides are connected to two sliding plates 11. The distance between the dropping guide plates 15 and the sliding plates 11 is adjustable along the direction of the blister pack's movement, allowing for adjustment of the length along the direction of movement to accommodate blister packs of different lengths. The distance between the two sliding plates 11 is adjustable, allowing for adjustment of the dropping channel width to accommodate blister packs of different widths. The dropping limit assembly controls the amount of blister packs dropping within the dropping channel. In summary, the dual conveying and dual unloading channels improve the unloading speed. Furthermore, the adjustable dimensions of the conveying and unloading channels allow the same unloader to handle various sizes and specifications of blister packs, enhancing its adaptability to different blister products, improving matching efficiency, reducing equipment costs, and increasing production efficiency.

[0059] In the description of this utility model, it should be understood that the terms "end," "top," "bottom," "side," "top," "above," "below," "end point," "both ends," and "both sides," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the term "connection" should be interpreted broadly. For example, it can refer to a mechanical connection or an electrical connection, or the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0060] The above are merely preferred embodiments of the utility model and are not intended to limit the utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the utility model should be included within the protection scope of the utility model.

Claims

1. A dual-compartment automatic blister packer, characterized in that, include: Frame; The top of the frame is provided with a conveyor plate, the conveyor plate is provided with two sets of adjustable width conveyor channels, and the conveyor plate is provided with a walking component for moving the medicine plates in the conveyor channels. The bottom of the frame is provided with a base plate, and the base plate is provided with two sliding plates, the distance between the two sliding plates being adjustable; The end of the conveying channel is provided with a material discharge channel for discharging medicine blister packs. The material discharge channel is formed by several spaced material discharge guide plates. The bottom of the material discharge guide plates on both sides is connected to two sliding plates respectively, and the material discharge guide plates and sliding plates are adjustable along the direction of medicine blister pack travel. The bottom of the feeding channel is equipped with a feeding limit component for controlling the amount of medicine blister packs fed into the feeding channel.

2. The dual-compartment automatic trolley feeding device according to claim 1, characterized in that, The conveying channel consists of two spaced conveying baffles, and the distance between the two conveying baffles is adjustable on the conveying plate.

3. The dual-compartment automatic trolley feeding device according to claim 2, characterized in that, The conveyor plate has a first waist-shaped hole along its width direction, and the conveyor baffle is connected to the conveyor plate by a first bolt.

4. The dual-compartment automatic trolley feeding device according to claim 1, characterized in that, The walking assembly includes a walking frame disposed above the conveyor plate, and a walking conveyor disposed on the walking frame corresponding to the conveying channel above the conveying channel. The walking conveyor includes two walking wheels disposed on the walking frame, and a conveyor belt disposed between the two walking wheels to contact the medicine plate in the conveying channel. The walking wheels are driven to rotate by a first drive motor disposed on the walking frame.

5. The dual-compartment automatic trolley feeding device according to claim 4, characterized in that, One side of the walking frame is hinged to the conveyor plate.

6. The dual-compartment automatic trolley feeding device according to claim 1, characterized in that, The base plate is provided with a slide rail along its width direction. The bottom of the two sliding plates are slidably engaged with the slide rail via a slider. The base plate is rotatably provided with a forward and reverse screw. The two ends of the forward and reverse screw are respectively connected to the two sliding plates. The ends of the forward and reverse screw are provided with a rotating handle.

7. The dual-compartment automatic trolley feeding device according to claim 6, characterized in that, The material discharge guide plate is provided in four angle steel shapes and is located at the four corners. A second waist-shaped hole is opened on the sliding plate along the walking direction of the medicine plate. The bottom of the material discharge guide plate is connected to the sliding plate by a second bolt.

8. The dual-compartment automatic trolley feeding device according to claim 1, characterized in that, The end of the conveying channel on the conveying plate is provided with a discharge port for discharging the medicine blister pack, and a first detection switch is provided at the discharge port.

9. A dual-compartment automatic trolley feeding device according to claim 1, characterized in that, The material dropping limiting component includes a fan-shaped vane. A vane shaft is provided on both sides of the material dropping channel on the sliding plate. Two fan-shaped vanes are provided at intervals at both ends of the vane shaft, and the two fan-shaped vanes are distributed at equal angles. A driven pulley is provided on the vane shaft. A second drive motor is provided on the base plate. The second drive motor drives the driven pulley to rotate through belt drive.

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