Material toppling and rolling prevention device and method for feeding machine

Abstract

The invention relates to the technical field of tobacco production equipment, and discloses a material toppling and rolling prevention device and method for a feeding machine. The connecting base is located above the material conveying belt and comprises a connecting plate, a first connecting rod and a rotating rod. The connecting plate is fixedly connected with a foreign object, the first connecting rod is fixedly connected with the connecting plate, and the rotating rod is rotationally connected with the connecting plate; the number of the material blocking rods is multiple, and the multiple material blocking rods are fixedly connected with the rotating rod. The multiple material blocking rods are arranged at intervals in the extending direction of the rotating rod. The material blocking rod is located at the discharging end of the material conveying belt. A coil spring is arranged in the rotating rod, and the elastic force of the coil spring drives the rotating rod to rotate till the material blocking rod abuts against the first connecting rod. The material posture can be adjusted, materials fall smoothly, impact, toppling and rolling caused by direct falling of the materials are avoided, the device is particularly suitable for fragile materials such as tobacco leaves and tobacco shreds, the breakage phenomenon is remarkably reduced, and the utilization rate of raw materials is increased.

Description

Technical Field

[0001] This application relates to the field of tobacco production equipment technology, and specifically to a feeding machine device and method for preventing material tipping and rolling. Background Technology

[0002] Feeders are commonly used conveying equipment in industries such as tobacco, food, and chemicals, used to evenly transport materials to downstream equipment (such as elevators and vibrating conveyors). When feeders are used in conjunction with elevators, there is usually a height difference between the material discharge end of the feeder's conveyor belt and the bottom inlet of the elevator. As the material falls from the conveyor belt onto the elevator, it is prone to tipping and tumbling due to gravity and the impact of the falling material.

[0003] For thin, flaky, and fragile materials such as tobacco leaves, the problems of tipping and tumbling are particularly prominent. During the fall, the materials lose control of their posture, colliding and compressing each other, leading to a significant increase in the breakage rate of tobacco leaves and shreds. This not only reduces raw material utilization and increases production costs but also affects the processing quality of subsequent steps, ultimately negatively impacting the quality of the final product. Current technologies typically attempt to alleviate these problems by adjusting the conveyor belt speed, but these methods have not effectively solved the issues of tipping, tumbling, and breakage caused by differences in material drop height. Summary of the Invention

[0004] This application provides a device and method for preventing material tipping and rolling in a feeder, aiming to solve the above-mentioned problems.

[0005] In one embodiment, a device for preventing material tipping and tumbling in a feeder is provided, comprising: A connecting seat is located above the material conveyor belt. The connecting seat includes a connecting plate, a first connecting rod, and a rotating rod. The connecting plate is used for fixed connection with an external object, the first connecting rod is fixedly connected to the connecting plate, and the rotating rod is rotatably connected to the connecting plate. The material stop bar consists of multiple bars, each fixedly connected to the rotating rod. These multiple material stop bars are spaced apart along the extension direction of the rotating rod. The material stop bars are located at the discharge end of the material conveyor belt. A coil spring is installed inside the rotating rod; when no material is pushing the material stop bar, the spring force drives the rotating rod to rotate until the material stop bar abuts against the first connecting rod.

[0006] The rotating rod is rotatably connected to the connecting plate via a coil spring. Both ends of the rotating rod have mounting slots for placing the coil spring. A fixing pin is also movably inserted into the mounting slot. The fixing pin is fixedly connected to the connecting plate. One end of the coil spring is fixedly connected to the inner wall of the mounting slot, and the other end is fixedly connected to the fixing pin. The coil spring is wrapped around the fixing pin.

[0007] In one embodiment, the extension direction of the rotating rod is perpendicular to the material movement direction at the discharge end of the material conveyor belt.

[0008] In one embodiment, the connector is provided with multiple through holes for bolts to be inserted and fixed.

[0009] Bolts are inserted into through holes to fix the connecting plate to the external object.

[0010] In one embodiment, a lifting conveyor belt is provided at the discharge end of the material conveyor belt, the lifting conveyor belt having a horizontal section and a lifting section; the horizontal section is located below the discharge end of the material conveyor belt, and the lifting section is spaced apart from the discharge end of the material conveyor belt; a leveling roller is provided on the lifting section; the leveling roller is spaced apart from the lifting section.

[0011] The material leveling roller is driven by a drive motor and is rotatably connected to the lifting section via a bracket. The rotation direction of the material leveling roller is opposite to that of the lifting conveyor belt.

[0012] The material falls from the discharge end of the material conveyor belt into the lifting conveyor belt, and is then lifted by the lifting conveyor belt to the next processing unit.

[0013] In one embodiment, a buffer element is also included, located between the lifting section and the discharge end of the material conveyor belt; the buffer element is spaced apart from the horizontal section.

[0014] In one embodiment, the buffer includes a support plate, a guide rod, and a damper; the support plate is fixedly disposed on the side of the horizontal section in the conveying direction, and the support plate is spaced apart from the horizontal section; the guide rod is rotatably connected to the support plate; the damper is fixedly connected to the guide rod, and the telescopic end of the damper is hinged to the guide rod.

[0015] In one embodiment, the guide rod is rotatably connected to the support plate via a rotating shaft; there are multiple guide rods, which are spaced apart along the extension direction of the rotating shaft.

[0016] In one embodiment, multiple guide rods are fixedly connected together by a second connecting rod; an arc-shaped hole is provided on the support plate, the damper is fixedly installed in the arc-shaped hole, and the output end of the damper is hinged to the second connecting rod.

[0017] In one embodiment, there are two support plates, which are distributed on both sides of the horizontal section, and the two ends of the second connecting rod are respectively located in two corresponding arc-shaped holes.

[0018] In one embodiment, another method for preventing material from tipping over and rolling in a feeder is provided, comprising the following steps: S1. The baffle bar is used to abut against the material located at the outlet of the material conveyor belt, restricting some of the material from falling directly from the outlet of the material conveyor belt into the horizontal section of the lifting conveyor belt; S2. Some of the material slides along the guide rod into the horizontal section of the lifting conveyor belt; S3. Material rolling down from the lifting section of the lifting conveyor belt comes into contact with the guide rod, and the damper connected to the guide rod absorbs the impact force of the rolling material.

[0019] The beneficial effects of this application are: This device features multiple baffles at the discharge end of the material conveyor belt. As material exits the conveyor belt, the baffles act as flexible barriers. Before falling, the material contacts the baffles, and under the combined action of the material's thrust and the spring force, the baffles rotate smoothly with the rotating rod, adjusting the material's posture and allowing it to fall gently. This avoids the impact, tipping, and tumbling caused by direct material fall, making it particularly suitable for fragile materials such as tobacco leaves and shredded tobacco. It significantly reduces breakage and improves raw material utilization.

[0020] This device is fixedly installed above the conveyor belt via a connecting seat. A coil spring is installed inside the rotating rod, and the spring force of the coil spring is used to automatically reset the stop rod. It requires no additional power source, has a compact structure, is easy to install, has no complex control components, has a low failure rate, low maintenance costs, and can operate stably for a long time.

[0021] This device utilizes the elastic force provided by a coil spring to enable the baffle rod to rotate automatically under the push of material, and automatically return to its initial position abutting against the first connecting rod when there is no material. This design can adaptively adjust the rotation angle and buffering force of the baffle rod according to changes in material flow rate and discharge speed, and has good adaptability to materials with different characteristics and different conveying volumes, making it widely applicable. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of an anti-material tipping and rolling device according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of an anti-material tipping and rolling device according to an embodiment of this application (material pushes away the baffle bar). Figure 3 This is a top view schematic diagram of an embodiment of the anti-material tipping and rolling device of this application; Figure 4 This is an embodiment of the present application. Figure 1 A schematic diagram of the left-side structure of a connecting seat and a stop bar; Figure 5 This is an embodiment of the present application. Figure 4 Enlarged view of point A in the image; Figure 6 This is an embodiment of the present application. Figure 1 A schematic diagram of another connecting seat and stop bar from the left side; Figure 7 This is an embodiment of the present application. Figure 6 A schematic diagram of the assembly structure of the sleeve and retaining pin in the middle; Figure 8 This is an embodiment of the present application. Figure 1 Enlarged view of point B in the image; Figure 9 This is a schematic flowchart of a method for preventing material tipping and rolling according to an embodiment of this application; The components include: 1. Connecting seat; 11. Connecting plate; 12. First connecting rod; 13. Rotating rod; 14. Mounting groove; 15. Fixing pin; 16. Through hole; 17. Sleeve; 2. Material conveyor belt; 3. Material stop bar; 4. Coil spring; 5. Lifting conveyor belt; 51. Horizontal section; 52. Lifting section; 6. Scale roller; 7. Buffer component; 71. Support plate; 72. Guide rod; 73. Damper; 74. Rotating shaft; 75. Second connecting rod; 76. Arc-shaped hole. Detailed Implementation

[0024] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application. Similarly, the following examples are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 invention 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 invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0030] This application proposes improvements and innovations, and presents the following embodiments.

[0031] In some implementations, please refer to Figures 1 to 9 On the one hand, a device for preventing material tipping and tumbling in a feeder is provided, including: Connecting seat 1 is located above the material conveyor belt 2. Connecting seat 1 includes connecting plate 11, first connecting rod 12, and rotating rod 13. Connecting plate 11 is used for fixed connection with external objects, first connecting rod 12 is fixedly connected to connecting plate 11, and rotating rod 13 is rotatably connected to connecting plate 11. There are multiple baffle rods 3, each fixedly connected to the rotating rod 13. The multiple baffle rods 3 are spaced apart along the extension direction of the rotating rod 13. The baffle rods 3 are located at the discharge end of the material conveyor belt 2. A coil spring 4 is installed inside the rotating rod 13. When there is no material pushing the baffle rod 3, the elastic force of the coil spring 4 drives the rotating rod 13 to rotate until the baffle rod 3 abuts against the first connecting rod 12.

[0032] The rotating rod 13 is rotatably connected to the connecting plate 11 via a coil spring 4. Both ends of the rotating rod 13 have mounting grooves 14 for placing the coil spring 4. A fixing pin 15 is also movably inserted into the mounting groove 14. The fixing pin 15 is fixedly connected to the connecting plate 11. One end of the coil spring 4 is fixedly connected to the inner wall of the mounting groove 14, and the other end is fixedly connected to the fixing pin 15. The coil spring 4 is wrapped around the fixing pin 15.

[0033] This device is equipped with multiple baffles 3 at the discharge end of the material conveyor belt 2. When the material is output from the conveyor belt, the baffles 3 form a flexible barrier against the material. Before falling, the material comes into contact with the baffles 3. Under the combined action of the material's thrust and the elasticity of the coil spring 4, the baffles 3 rotate smoothly with the rotating rod 13, allowing the material's posture to be adjusted and falling gently. This avoids the impact, tipping, and tumbling caused by the material falling directly, and is especially suitable for fragile materials such as tobacco leaves and shredded tobacco, significantly reducing breakage and improving raw material utilization.

[0034] This device is fixedly installed above the conveyor belt via the connecting seat 1. A coil spring 4 is installed inside the rotating rod 13, and the elastic force of the coil spring 4 is used to automatically reset the stop rod 3. It requires no additional power source, has a compact structure, is easy to install, has no complex control components, has a low failure rate, low maintenance costs, and can operate stably for a long time.

[0035] This device utilizes the elastic force provided by the coil spring 4 to enable the baffle rod 3 to rotate automatically under the push of material, and to automatically return to its initial position abutting against the first connecting rod 12 when there is no material. This design can adaptively adjust the rotation angle and buffering force of the baffle rod 3 according to changes in material flow rate and discharge speed, and has good adaptability to materials with different characteristics and different conveying volumes, making it widely applicable.

[0036] Specifically, there are two connecting plates 11, which are located on both sides of the material conveyor belt 2.

[0037] In one embodiment, the fixing pin 15 is rod-shaped and passes through the rotating rod 13. The two ends of the fixing pin 15 are fixedly connected to two connecting plates 11 respectively. The rotating rod 13 is composed of multiple sleeves 17. Each sleeve 17 is fixedly connected to a stop rod 3. Each sleeve 17 is equipped with a coil spring 4. One end of the coil spring 4 is fixedly connected to the inner wall of the sleeve 17, and the other end is fixedly connected to the fixing pin 15.

[0038] The rotating rod 13 consists of multiple independent sleeves 17, each sleeve 17 being fixedly connected to a baffle rod 3 and each having its own built-in coil spring 4. When the material flow rate at the discharge end of the material conveyor belt 2 is uneven or local accumulation occurs, each baffle rod 3 can rotate independently according to the material thrust at its corresponding position, without interfering with each other. Compared to the integral rotating rod 13, this structure can more precisely adapt to the differences in material distribution in the width direction, avoiding overall buffer failure due to excessive or insufficient material in certain areas, and further improving the anti-tipping and anti-rollover effects.

[0039] Each coil spring 4 within the sleeve 17 operates independently, with their elasticity unaffected by each other. In practical applications, coil springs 4 with different elasticities can be selected based on the material characteristics (such as flow rate and density) at the corresponding positions of each baffle rod 3 to achieve differentiated buffering. Furthermore, when a baffle rod 3 or coil spring 4 is damaged, only the corresponding sleeve 17 assembly needs to be replaced; there is no need to disassemble the entire rotating rod 13, reducing maintenance costs and time.

[0040] The fixing pin 15 adopts a rod-shaped structure and runs through all the sleeves 17. Its two ends are fixedly connected to the connecting plates 11 on both sides to form a stable central shaft support. Multiple sleeves 17 are sequentially fitted onto the fixing pin 15, which not only ensures coaxiality but also prevents relative movement or skewness between the sleeves 17. This ensures that the stop rod 3 maintains a stable working posture during frequent rotation, improving the durability and operational reliability of the device.

[0041] The coil spring 4 is built into each sleeve 17, and multiple sleeves 17 are connected in series on the same fixing pin 15. The overall structure is compact and does not require additional space on both sides of the conveyor belt. The fixing method of the connecting plates 11 on both sides also makes it easy to install the device directly on the existing feeder frame, with low requirements for on-site modification and wide applicability.

[0042] In one embodiment, the extension direction of the rotating rod 13 is perpendicular to the material movement direction at the discharge end of the material conveyor belt 2. The arrangement direction of the baffle rods 3 is perpendicular to the material outflow direction, so that the baffle rods 3 can face the material with the largest cross-section, ensuring that each baffle rod 3 can effectively contact and block the material. At the same time, the vertical arrangement helps the material to be evenly stressed when pushing the baffle rods 3 to rotate, avoiding material deviation or jamming, and improving the stability and reliability of the buffering effect.

[0043] In one embodiment, the connector 1 is provided with a plurality of through holes 16 for bolts to be inserted and fixed.

[0044] The bolt is inserted into the through hole 16 to fix the connecting plate 11 to the external object.

[0045] By providing through holes 16 on the connecting seat 1 and securing it with bolts, the installation process of the entire device is simple and quick, and the connection is firm and reliable. The bolt connection method facilitates on-site adjustment of the installation position and also facilitates disassembly and assembly operations during subsequent maintenance, improving the practicality and adaptability of the device.

[0046] In one embodiment, a lifting conveyor belt 5 is provided at the discharge end of the material conveyor belt 2. The lifting conveyor belt 5 has a horizontal section 51 and a lifting section 52. The horizontal section 51 is located below the discharge end of the material conveyor belt 2, and the lifting section 52 is spaced apart from the discharge end of the material conveyor belt 2. A leveling roller 6 is provided on the lifting section 52. The leveling roller 6 is spaced apart from the lifting section 52.

[0047] The material leveling roller 6 is driven by a drive motor and is rotatably connected to the lifting section 52 via a bracket. The rotation direction of the material leveling roller is opposite to the rotation direction of the lifting conveyor belt 5.

[0048] Material falls from the discharge end of material conveyor belt 2 into lifting conveyor belt 5, and is lifted by lifting conveyor belt 5 to the next processing unit.

[0049] In this embodiment, the material leveling roller 6 installed on the lifting section 52 rotates in the opposite direction to the lifting conveyor belt 5, which can disperse and flatten the material falling onto the lifting conveyor belt 5, preventing the material from accumulating too thickly or being unevenly distributed in the lifting section 52, thereby ensuring that the material enters the next processing mechanism with a uniform material layer thickness, further reducing the crushing caused by material accumulation, and improving the uniformity of the overall conveying and the stability of the process.

[0050] In one embodiment, a buffer element 7 is also included, located between the lifting section 52 and the discharge end of the material conveyor belt 2; the buffer element 7 is spaced apart from the horizontal section 51. The buffer element 7 fills the space between the lifting section 52 and the discharge end, effectively preventing material from accidentally rolling or rebounding from the lifting section 52, thus avoiding additional breakage caused by secondary falls. Simultaneously, the buffer element 7's spaced-apart arrangement from the horizontal section 51 does not affect the normal material discharge path, ensuring continuous operation of the device.

[0051] In one embodiment, the buffer 7 includes a support plate 71, a guide rod 72, and a damper 73; the support plate 71 is fixedly disposed on the side of the horizontal section 51 in the conveying direction, and the support plate 71 is spaced apart from the horizontal section 51; the guide rod 72 is rotatably connected to the support plate 71; the damper 73 is fixedly connected to the guide rod 72, and the telescopic end of the damper 73 is hinged to the guide rod 72.

[0052] In this embodiment, the guide rod 72, in conjunction with the damper 73, not only provides guidance for the falling material, guiding it smoothly into the horizontal section 51, but also acts as a flexible buffer when the material rolls down from the lifting section 52. The damper 73 absorbs impact energy, effectively suppressing the rebound and tumbling of the material, and is especially suitable for fragile materials, further reducing the breakage rate. At the same time, it has a compact structure and sensitive action response.

[0053] In one embodiment, the guide rod 72 is rotatably connected to the support plate 71 via a rotating shaft 74; there are multiple guide rods 72, which are spaced apart along the extension direction of the rotating shaft 74. The rotating shaft 74 enables synchronous rotation of the multiple guide rods 72, ensuring the consistency of their movements and preventing material skewing due to uneven force on individual guide rods 72. The spaced arrangement of multiple guide rods 72 expands the coverage of buffering and guiding, adapting to the material conveying needs of different widths and improving the overall protective effect of the device.

[0054] In one embodiment, multiple guide rods 72 are fixedly connected together by a second connecting rod 75. An arc-shaped hole 76 is provided on the support plate 71, and a damper 73 is fixedly installed in the arc-shaped hole 76, with the output end of the damper 73 hinged to the second connecting rod 75. The second connecting rod 75 connects the multiple guide rods 72 into one unit, enabling all guide rods 72 to move synchronously, resulting in more uniform force distribution and a more stable buffering effect. The arc-shaped hole 76 provides adjustable space for the installation of the damper 73, facilitating adjustment of the damper 73's installation angle and force according to material characteristics, thus enhancing the device's debugging flexibility and adaptability.

[0055] The damper 73 is the same as the damper 73 available on the market.

[0056] Specifically, large pieces of material slide along the guide rod 72 into the horizontal section 51, while smaller pieces fall into the horizontal section 51 through the gaps in the guide rod 72. Smaller pieces are lighter, so even if they fall from the outlet of the material conveyor belt 2 onto the horizontal section 51, the impact and breakage are minimal. Therefore, the spaced guide rods 72 and baffles 3 can minimize the breakage of large pieces of material without affecting transportation efficiency.

[0057] In one embodiment, there are two support plates 71, distributed on both sides of the horizontal section 51, with the two ends of the second connecting rod 75 located in two corresponding arc-shaped holes 76. The double-sided support plates 71 make the support structure of the guide rod 72 assembly more stable, avoiding deflection or deformation caused by unilateral force. The two ends of the second connecting rod 75 located in the arc-shaped holes 76 on both sides ensure the centering and stability of the guide rod 72 during rotation, improving the reliability and service life of the entire buffer component 7 during long-term operation.

[0058] In one embodiment, another aspect provides a method for preventing material from tipping over and rolling in a feeder, comprising the following steps: S1, the baffle bar 3 is used to contact the material located at the outlet of the material conveyor belt 2, and to restrict some of the material from falling directly from the outlet of the material conveyor belt 2 onto the horizontal section 51 of the lifting conveyor belt 5; S2. Some material slides along guide rod 72 into the horizontal section 51 of lifting conveyor belt 5; S3. Material rolling off the lifting section 52 of the lifting conveyor belt 5 comes into contact with the guide rod 72, and the damper 73 connected to the guide rod 72 absorbs the impact force of the rolling material.

[0059] This method systematizes and steps the working process of the device, clarifying a three-level protection mechanism: the baffle rod 3 blocks the material, the guide rod 72 guides the sliding, and the damper 73 absorbs the impact. Through this method, the entire transfer process of the material from the discharge end to the lifting conveyor belt 5 is effectively controlled, preventing the material from tipping over, rolling, and being broken by impact at the source. It achieves flexible conveying of fragile materials throughout the entire process, and has the advantages of simple operation, significant protective effect, and strong adaptability.

[0060] The above are merely optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for preventing material tipping and rolling in a feeder, characterized in that, include: A connecting seat is located above the material conveyor belt. The connecting seat includes a connecting plate, a first connecting rod, and a rotating rod. The connecting plate is used for fixed connection with an external object, the first connecting rod is fixedly connected to the connecting plate, and the rotating rod is rotatably connected to the connecting plate. The material stop bar consists of multiple bars, each fixedly connected to the rotating rod. These multiple material stop bars are spaced apart along the extension direction of the rotating rod. The material stop bars are located at the discharge end of the material conveyor belt. A coil spring is installed inside the rotating rod; when no material is pushing the material stop bar, the spring force drives the rotating rod to rotate until the material stop bar abuts against the first connecting rod.

2. The apparatus according to claim 1, characterized in that, The extension direction of the rotating rod is perpendicular to the material movement direction at the discharge end of the material conveyor belt.

3. The apparatus according to claim 1, characterized in that, The connector is provided with multiple through holes for bolts to be inserted and fixed.

4. The apparatus according to claim 1, characterized in that, The material conveyor belt has a lifting conveyor belt at its discharge end, which has a horizontal section and a lifting section. The horizontal section is located below the discharge end of the material conveyor belt, and the lifting section is spaced apart from the discharge end of the material conveyor belt. A leveling roller is provided on the lifting section, and the leveling roller is spaced apart from the lifting section.

5. The apparatus according to claim 4, characterized in that, It also includes a buffer component located between the lifting section and the discharge end of the material conveyor belt; the buffer component is spaced apart from the horizontal section.

6. The apparatus according to claim 5, characterized in that, The buffer component includes a support plate, a guide rod, and a damper; the support plate is fixedly disposed on the side of the horizontal section in the conveying direction, and the support plate is spaced apart from the horizontal section; the guide rod is rotatably connected to the support plate; the damper is fixedly connected to the guide rod, and the telescopic end of the damper is hinged to the guide rod.

7. The apparatus according to claim 6, characterized in that, The guide rod is rotatably connected to the support plate via a rotating shaft; there are multiple guide rods, which are spaced apart along the extension direction of the rotating shaft.

8. The apparatus according to claim 7, characterized in that, Multiple guide rods are fixedly connected together by a second connecting rod; an arc-shaped hole is provided on the support plate, the damper is fixedly installed in the arc-shaped hole, and the output end of the damper is hinged to the second connecting rod.

9. The apparatus according to claim 8, characterized in that, There are two support plates, which are distributed on both sides of the horizontal section, and the two ends of the second connecting rod are respectively located in the two corresponding arc-shaped holes.

10. A method for preventing material tipping and rolling in a feeder, implemented based on the apparatus described in any one of claims 5-9, characterized in that, Includes the following steps: S1. The baffle bar is used to abut against the material located at the outlet of the material conveyor belt, restricting some of the material from falling directly from the outlet of the material conveyor belt into the horizontal section of the lifting conveyor belt; S2. Some of the material slides along the guide rod into the horizontal section of the lifting conveyor belt; S3. Material rolling down from the lifting section of the lifting conveyor belt comes into contact with the guide rod, and the damper connected to the guide rod absorbs the impact force of the rolling material.

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