A tobacco weighing and metering apparatus

Abstract

This invention provides a tobacco shred weighing and metering device, belonging to the technical field of tobacco shred processing equipment. It includes an upper shell and a lower shell. A fixed frame is provided on one side of the lower shell. Inside the lower shell are a support plate and an inner chamber. Inside the inner chamber are a fixed frame, a filter screen, and an air outlet pipe. The support plate is connected to a weighing component and a reset component. An upper tobacco shred detection sensor is provided on one side of the lower shell. It also includes: a feeding component for discharging tobacco shreds; and a shaking component for promoting tobacco shred collection. The invention's advantages include: eliminating measurement benchmark deviation through a dual calibration structure of mechanical reset of the reset component and electrical zeroing of the weighing component, achieving accurate measurement of the net weight of the tobacco shreds; and automatically shaking off residual tobacco shreds by using a flap opening and closing mechanism to drive the partition plate to strike the fixed frame and filter screen. Simultaneously, the use of partition plates of varying lengths diverts and distributes the tobacco shreds evenly during the feeding stage, reducing the problems of sludge layering and accumulation.

Description

Technical Field

[0001] This invention relates to the field of tobacco processing equipment technology, and more specifically, to a tobacco weighing and metering device. Background Technology

[0002] Currently, with the development of modern production, metrology is becoming increasingly important. Metering the tobacco consumed by cigarette rolling mills is a crucial aspect of metrological management in cigarette factories. Cigarette factories have widely adopted pneumatic automatic tobacco feeding systems to improve efficiency, reduce worker workload, and minimize environmental pollution. Therefore, research on systems compatible with these systems that enable online automatic metering of tobacco consumption per cigarette rolling mill has become an urgent issue that needs to be addressed.

[0003] The metering of tobacco consumption in cigarette workshops is a core and crucial aspect of metering management in cigarette factory production. Currently, to improve production efficiency and reduce manual labor intensity and workshop environmental pollution, cigarette factories have widely adopted pneumatic automatic tobacco feeding systems. However, the traditional feeding equipment currently used in cigarette factories typically suffers from inherent technical problems such as intermittent feeding and insufficient dynamic weighing accuracy, making it difficult to achieve real-time and accurate metering of tobacco quantity and severely disconnected from the metering requirements in the context of intelligent manufacturing. At the same time, the use and production management of tobacco in cigarette workshops are mostly in a rudimentary state, with limited product quality control methods, making it difficult to finely control the production process and accurately count and effectively manage tobacco loss. How to invent a tobacco weighing and metering device to solve these problems has become an urgent issue for those skilled in the art. Summary of the Invention

[0004] To overcome the above shortcomings, this invention provides a tobacco shred weighing and metering device, which aims to solve the problem that it is inconvenient to achieve real-time and accurate measurement of tobacco shred quantity; at the same time, the use and production management of tobacco shreds in cigarette workshops are mostly in a rough state, with not only single means of product quality control, but also difficulty in fine-grained control of the production process.

[0005] This invention is implemented as follows: This invention provides a tobacco weighing and metering device, comprising an upper shell and a lower shell. A fixing frame is provided on one side of the lower shell. A support plate and an inner chamber are provided inside the lower shell. A fixing frame, a filter screen, and an air outlet pipe are provided inside the inner chamber. A weighing component and a resetting component are connected to the support plate. An upper tobacco detection sensor is provided on one side of the lower shell. The device also includes: A feeding assembly, located below the inner compartment, is used for discharging tobacco shreds; A shaking component, connected to a fixed frame, is used to facilitate the collection of tobacco shreds.

[0006] Preferably, the upper shell and the lower shell are fixedly connected, one side of the lower shell is fixedly connected to the fixing frame, the fixing frame is provided with an air conveying pipe and a wire feeding pipe, one end of the air conveying pipe and the wire feeding pipe is connected to the inner chamber, and the side wall of the inner chamber is fixedly connected with an installation plate.

[0007] Preferably, the weighing assembly includes a fixed base, which is T-shaped. One end of the fixed base is fixedly connected to a support plate, and the other end of the fixed base is fixedly connected to a weighing sensor. One end of the weighing sensor is provided with an extension block, and a bolt rod is movably connected to the extension block. One end of the bolt rod passes through the side wall of the support plate and is fixedly connected to the top of the inner chamber. The support plate is fixedly connected to the lower shell.

[0008] Preferably, the reset assembly includes a cylinder and an outer cylinder. The cylinder is fixedly connected to the outer cylinder, one end of the cylinder penetrates the side wall of the outer cylinder, one end of the outer cylinder is fixedly connected to a support plate, and the outer cylinder is provided with a connecting rod and an inner column inside.

[0009] Preferably, the connecting rod is T-shaped, one end of the connecting rod is fixedly connected to the cylinder, the inner column is fixedly connected to the inner chamber, the side wall of the inner column is provided with a through hole, the through hole is frustum-shaped, and one end of the connecting rod is located inside the through hole.

[0010] Preferably, the fixing frame is arranged in a "V" shape, the fixing frame is fixedly connected to the inner chamber, the side wall of the fixing frame is fixedly connected to the filter screen, the fixing frame is located below the air outlet pipe, one end of the air outlet pipe is connected to the air delivery pipe, and a hinge is fixedly connected to the side wall of the fixing frame.

[0011] Preferably, the shaking assembly includes a movable seat and a rotating rod. The rotating rod is arranged in an "I" shape. The movable seat is fixedly connected to the outer wall of the rotating rod. The rotating rod is rotatably connected to a hinge seat. A torsion spring is sleeved on the outer wall of the rotating rod. The two ends of the torsion spring are fixedly connected to the side walls of the rotating rod and the hinge seat, respectively.

[0012] Preferably, the side wall of the movable seat is provided with a movable groove, the inner wall of the movable groove is slidably connected to a sliding plate, and the inside of the movable groove is provided with a telescopic spring, the two ends of which are fixedly connected to the inner wall of the movable groove and the side wall of the sliding plate, respectively.

[0013] Preferably, one end of the movable seat is provided with a fixed plate, and both ends of the fixed plate are fixedly connected with crossbars, and the outer wall of the crossbars is fixedly connected with a number of partition plates of different lengths.

[0014] Preferably, the feeding assembly includes a second cylinder and a flap. One end of the second cylinder is rotatably connected to a mounting plate, and the other end of the second cylinder is rotatably connected to a mounting base. The mounting base is fixedly connected to the side wall of the flap. The flap abuts against the lower end of the inner chamber. A vertical rod is fixedly connected to the inner wall of the flap, and a locking block is fixedly connected to the end of the vertical rod away from the flap.

[0015] The beneficial effects of this invention are: 1. This invention achieves fully automated operation of tobacco shreds from upstream conveying and dynamic real-time weighing to downstream feeding through the linkage design of the wind-powered tobacco feeding structure and the weighing component, coupled with a dual signal detection mechanism for weight and material level. At the same time, relying on the dual calibration structure of mechanical reset and electrical zeroing of the reset component, the measurement benchmark deviation is eliminated, and the net weight of tobacco shreds is accurately measured. Moreover, the equipment is intelligently linked with the upstream and downstream production links throughout the process, without the need for manual intervention, reducing the labor intensity of workshop workers and improving the overall work efficiency of tobacco shred feeding and measurement.

[0016] 2. This invention utilizes a mechanical linkage structure between the feeding component and the shaking component. By leveraging the opening and closing of the flap to drive the separator plate to strike the fixed frame and filter screen, it automatically shakes off residual material adhering to the tobacco during the feeding process. Simultaneously, the use of separator plates of varying lengths and staggered distribution ensures that the tobacco shreds are evenly distributed during the feeding stage, reducing the problems of sludge layering and accumulation. Ultimately, it guarantees metering accuracy in both the feeding and feeding stages. Furthermore, each component has no redundant independent drive parts, simplifying the overall structure of the equipment and reducing the probability of failure. At the same time, the high-frequency, small-amplitude vibration design of the shaking mechanism avoids interference with the accuracy of weighing, effectively extending the service life of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a tobacco weighing and metering device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the weighing component and reset component of a tobacco weighing and metering device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the inner chamber structure of a tobacco weighing and metering device provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the inner chamber of a tobacco weighing and metering device provided in an embodiment of the present invention; Figure 5This is a schematic diagram of the air outlet pipe structure of a tobacco weighing and metering device provided in an embodiment of the present invention; Figure 6 This is a partial cross-sectional view of the inner chamber structure of a tobacco weighing and metering device provided in an embodiment of the present invention; Figure 7 This invention provides a tobacco weighing and metering device. Figure 6 Enlarged schematic diagram of the structure at point A in the middle; Figure 8 This is a schematic diagram of the weighing component structure of a tobacco weighing and metering device provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the filter structure of a tobacco weighing and metering device provided in an embodiment of the present invention; Figure 10 This invention provides a tobacco weighing and metering device. Figure 9 Enlarged schematic diagram of the structure at point B; Figure 11 This is a schematic diagram of the flap opening state of a tobacco weighing and metering device provided in an embodiment of the present invention.

[0019] In the diagram: 1. Upper shell; 2. Fixing frame; 21. Inlet pipe; 22. Air conveying pipe; 3. Lower shell; 4. Upper tobacco detection sensor; 5. Weighing assembly; 51. Fixing base; 52. Weighing sensor; 53. Extension block; 54. Bolt rod; 6. Reset assembly; 61. Cylinder 1; 62. Outer cylinder; 63. Connecting rod; 64. Inner column; 65. Through hole; 7. Support plate; 8. Inner chamber; 81. Mounting plate; 9. 91. Feeding assembly; 92. Cylinder II; 93. Upright pole; 94. Flip plate; 95. Locking block; 10. Mounting base; 11. Vibration assembly; 12. Divider plate; 13. Movable seat; 14. Fixed plate; 15. Slide plate; 16. Telescopic spring; 17. Movable groove; 18. Crossbar; 19. Rotating rod; 100. Torsion spring; 11. Fixed frame; 12. Filter screen; 13. Hinge seat; 14. Air outlet duct. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1 Reference Figures 1-11A tobacco weighing and metering device includes an upper shell 1 and a lower shell 3. A fixing frame 2 is provided on one side of the lower shell 3. A support plate 7 and an inner chamber 8 are provided inside the lower shell 3. A fixing frame 11, a filter screen 12, and an air outlet pipe 14 are provided inside the inner chamber 8. A weighing component 5 and a reset component 6 are connected to the support plate 7. An upper tobacco detection sensor 4 is provided on one side of the lower shell 3. The device also includes: The feeding assembly 9 is located below the inner chamber 8 and is used for discharging tobacco shreds. The shaking component 10 is connected to the fixed frame 11 and is used to promote the collection of tobacco.

[0022] Furthermore; the upper shell 1 is fixedly connected to the lower shell 3, one side of the lower shell 3 is fixedly connected to the fixing frame 2, the fixing frame 2 is provided with an air delivery pipe 22 and a wire inlet pipe 21 respectively, one end of the air delivery pipe 22 and the wire inlet pipe 21 is connected to the inner chamber 8, and the side wall of the inner chamber 8 is fixedly connected to the mounting plate 81; the fixing frame 11 is arranged in a "V" shape, the fixing frame 11 is fixedly connected to the inner chamber 8, the side wall of the fixing frame 11 is fixedly connected to the filter screen 12, the fixing frame 11 is located below the air outlet pipe 14, one end of the air outlet pipe 14 is connected to the filter screen 12, and the fixing frame 11 is located below the air outlet pipe 14. The air conveying duct 22 is connected, and the side wall of the fixed frame 11 is fixedly connected to the hinge seat 13; the weighing component 5 includes a fixed seat 51, which is arranged in a "T" shape. One end of the fixed seat 51 is fixedly connected to the support plate 7, and the other end of the fixed seat 51 is fixedly connected to the weighing sensor 52. One end of the weighing sensor 52 is provided with an extension block 53, and the extension block 53 is movably connected to a bolt rod 54. One end of the bolt rod 54 passes through the side wall of the support plate 7 and is fixedly connected to the top of the inner chamber 8. The support plate 7 is fixedly connected to the lower shell 3.

[0023] It should be noted that this tobacco weighing and metering equipment is fully integrated with the cigarette making machine and the tobacco storage room in the upstream tobacco processing workshop, adapting to the continuous production needs of cigarette manufacturing. Its complete working cycle principle is as follows: the air conveying pipe 22 is connected to the external negative pressure suction system, and the tobacco inlet pipe 21 is connected to the feeding end of the tobacco storage room in the upstream tobacco processing workshop. After the equipment is started, the negative pressure suction system forms a stable negative pressure flow field inside the inner chamber 8 of the equipment through the air conveying pipe 22. Under the action of negative pressure suction, the tobacco in the storage room is smoothly conveyed to the tobacco inlet pipe 21 and continuously enters the inner chamber 8 along the pipe, completing the pneumatic conveying and feeding of tobacco. The entire process does not require manual intervention and meets the matching requirements of the automatic pneumatic tobacco feeding system of the cigarette factory.

[0024] In the initial standby state of the equipment, the reset component 6 has completed the mechanical reset calibration of the inner chamber 8, and the weighing sensor 52 in the weighing component 5 returns to zero after electrical zeroing. At this time, the inner chamber 8 is in the initial state of suspended weighing without material and no load, which establishes an interference-free benchmark for subsequent tobacco weight detection. As the tobacco continuously enters the inner chamber 8 through the inlet pipe 21, the weight of the tobacco will be gradually loaded onto the inner chamber 8, causing the inner chamber 8 to generate a downward gravitational pull. This gravity is transmitted to the extension block 53 of the weighing sensor 52 through the bolt rod 54 at the top of the inner chamber 8. The weighing sensor 52 converts the physical gravity signal into an electrical signal, detects and feeds back the cumulative weight of the tobacco in the inner chamber 8 in real time, and realizes dynamic real-time monitoring of tobacco weight. To achieve accurate determination of both tobacco shred level and weight, transparent through windows are provided on the corresponding sides of the lower shell 3 and the inner chamber 8. The upper tobacco shred detection sensor 4 is positioned directly opposite the transparent through window, which can detect the tobacco shred level in the inner chamber 8 in real time, forming a dual detection mechanism of weight signal and shred level signal. When the cumulative weight of tobacco shreds in the inner chamber 8 reaches the preset measurement threshold, and the upper tobacco shred detection sensor 4 detects that the tobacco shred level has reached the calibrated height, the two signals synchronously trigger a stop feeding command. The feeding action of the upstream feeding end and the feeding pipe 21 stops immediately to avoid excessive or insufficient tobacco shreds. At this time, the reset component 6 corrects the measurement data again to offset the slight deviation caused by minor vibration and airflow disturbance during equipment operation. The value finally collected and recorded by the weighing sensor 52 is the pure weight of tobacco shreds in the inner chamber 8, which is retained as the core data of this measurement. All electrical components in the equipment are powered by an external power source and are electrically connected to an external controller. The upper tobacco shred detection sensor 4 can be an explosion-proof diffuse reflection photoelectric sensor (infrared / laser type, adapted to the explosion-proof requirements of tobacco factories).

[0025] After the tobacco is accurately metered, the equipment enters the waiting state, and is linked with the supply demand of the downstream cigarette machine unit throughout the process. The low-level phototube configured in the working hopper of the cigarette machine unit is the material level detection trigger element. When the phototube detects that the tobacco in the working hopper of the cigarette machine unit is exhausted and the material level is lower than the production threshold, it will immediately send a material request signal to this equipment. After the material request signal is triggered, the feeding component 9 at the bottom of the inner hopper 8 of the equipment starts immediately, the moving end of cylinder 2 91 retracts, and drives the flap 93 to rotate around the hinge point through the mounting base 95, so as to open the feeding port of the inner hopper 8. The tobacco that has been metered in the inner hopper 8 falls smoothly into the working hopper of the cigarette machine unit under the action of gravity, completing the accurate feeding.

[0026] After the tobacco shreds are fed, the moving end of cylinder 2 91 extends, causing the flap 93 to reset and tightly abut against the lower end of the inner chamber 8, thus sealing the feeding port and preventing tobacco shred leakage or airflow overflow during subsequent feeding. After the flap 93 closes, the equipment control system automatically sends a replenishment signal to the upstream tobacco storage room. The storage room and the equipment's air conveying pipe 22 and feeding pipe 21 are restarted, starting a new round of tobacco shred pneumatic conveying and weighing process. This cycle repeats, realizing the full automation of the tobacco shred metering, feeding, and replenishment process from the upstream storage room to the downstream cigarette machine. The tobacco shred weight data of each work cycle is recorded by the system in real time, providing accurate quantitative basis for subsequent tobacco output calculation, tobacco loss statistics, and single unit assessment.

[0027] Reference Figure 2 and Figure 6 Furthermore, the reset assembly 6 includes a cylinder 61 and an outer cylinder 62. The cylinder 61 is fixedly connected to the outer cylinder 62. One end of the cylinder 61 penetrates the side wall of the outer cylinder 62. One end of the outer cylinder 62 is fixedly connected to the support plate 7. The outer cylinder 62 is provided with a connecting rod 63 and an inner column 64. The connecting rod 63 is T-shaped. One end of the connecting rod 63 is fixedly connected to the cylinder 61. The inner column 64 is fixedly connected to the inner chamber 8. The side wall of the inner column 64 is provided with a through hole 65. The through hole 65 is frustum-shaped. One end of the connecting rod 63 is located inside the through hole 65.

[0028] It should be noted that the reset component 6, as the core supporting structure for achieving accurate weighing in the tobacco weighing and metering equipment, completes the physical reset calibration of the inner chamber 8 through the linear drive of cylinder 61 and mechanical limit transmission. Then, electrical zeroing eliminates the measurement benchmark deviation, forming a dual calibration mechanism of mechanical reset and electrical zeroing. This establishes an interference-free and uniform zero-point benchmark for each tobacco weighing. After the tobacco is unloaded, the flap 93 resets and seals tightly against the lower end of the inner chamber 8. The equipment control system triggers the reset component 6 to enter the working state, starting cylinder 61 to execute... During the reset action, the moving end of cylinder 61 begins to retract upon receiving an electrical signal. Its retraction power is directly transmitted to the fixed connecting rod 63, causing the connecting rod 63 to move vertically upwards along the inside of the outer cylinder 62. Because the end of the connecting rod 63 is fitted into the frustum-shaped through hole 65 of the inner column 64, and the frustum-shaped structure of the through hole 65 forms a precise mechanical limit, during the upward movement of the connecting rod 63, its side wall and the inner wall of the through hole 65 form a squeezing force. This force is transmitted through the inner column 64 to the inner chamber 8 fixedly connected to it, causing the inner chamber 8 to move vertically upwards synchronously as a whole.

[0029] The upward movement of the inner chamber 8 restores it to its initial unloaded standard suspension position, correcting minor offsets caused by factors such as the weight of the tobacco, feeding vibration, and airflow disturbance. Simultaneously, it resets components such as the bolt rod 54 and the extension block 53 of the weighing assembly 5 to their stress-free initial state, eliminating mechanical measurement deviations caused by component deformation and positional shifts. This achieves mechanical zeroing and calibration of the inner chamber 8 and the weighing transmission components, preparing for subsequent electrical zeroing. When the inner chamber 8 moves upward with the inner column 64 to the preset standard position... After reaching the quasi-reset position, cylinder 61 stops contracting and remains stationary for a short time to ensure that the mechanical reset action is in place and the inner chamber 8 is in a stable standard suspension state. Subsequently, the equipment control system issues a command, and the moving end of cylinder 61 extends in the opposite direction to reset, driving the connecting rod 63 to move vertically downward along the inside of the outer cylinder 62 until the end of the connecting rod 63 is completely disengaged from the frustum-shaped through hole 65 of the inner column 64, releasing the mechanical limit and power connection between the two. The inner chamber 8 is then suspended separately by the bolt rod 54 of the weighing component 5, restoring it to the normal weighing force state.

[0030] At the instant the connecting rod 63 and the through hole 65 are separated, the equipment control system synchronously triggers the electrical zeroing program of the weighing sensor 52. This program collects the no-load signal of the weighing sensor 52 at this time, sets it as the zero reference value of this weighing cycle, and eliminates the zero drift of the sensor caused by long-term stress, ambient temperature and humidity, and slight vibration, so that the value of the weighing sensor 52 is accurately returned to zero. At this point, the equipment completes the complete workflow of cylinder drive, mechanical limit, inner chamber 8 reset, component separation and electrical zeroing. The equipment returns to the initial standby state and is ready for the next round of tobacco feeding and dynamic weighing.

[0031] The entire reset and zeroing process is automatically triggered and precisely controlled by the equipment control system. The extension and retraction stroke and timing of cylinder 61 are precisely linked with the electrical zeroing program, requiring no manual intervention. Furthermore, the through hole 65 of the inner column 64 adopts a frustum-shaped design, which not only ensures the stability and accuracy of power transmission between the connecting rod 63 and the inner column 64, but also prevents the connecting rod 63 from getting stuck in the through hole 65 during extension and retraction, ensuring the smoothness of the mechanical reset action. At the same time, in conjunction with the digital calibration of electrical zeroing, dual precise zeroing of mechanical and electrical systems is achieved, eliminating the measurement benchmark deviation from the root and ensuring the accuracy of tobacco weighing data.

[0032] Example 2 Reference Figures 3-11Furthermore, the vibration assembly 10 includes a movable seat 102 and a rotating rod 108. The rotating rod 108 is arranged in an "I" shape. The movable seat 102 is fixedly connected to the outer wall of the rotating rod 108, and the rotating rod 108 is rotatably connected to the hinge seat 13. A torsion spring 109 is sleeved on the outer wall of the rotating rod 108, and the two ends of the torsion spring 109 are fixedly connected to the side walls of the rotating rod 108 and the hinge seat 13, respectively. A movable groove 106 is opened on the side wall of the movable seat 102. A sliding plate 104 is slidably connected to the inner wall of the movable groove 106. A telescopic spring 105 is provided inside the movable groove 106, and the two ends of the telescopic spring 105 are respectively connected to the inner wall of the movable groove 106. The slide plate 104 is fixedly connected to the side wall; one end of the movable seat 102 is provided with a fixed plate 103, and the two ends of the fixed plate 103 are fixedly connected with crossbars 107. The outer wall of the crossbars 107 is fixedly connected with several partition plates 101 of different lengths; the unloading assembly 9 includes a second cylinder 91 and a flip plate 93. One end of the second cylinder 91 is rotatably connected to the mounting plate 81, and the other end of the second cylinder 91 is rotatably connected to a mounting base 95. The mounting base 95 is fixedly connected to the side wall of the flip plate 93. The flip plate 93 abuts against the lower end of the inner chamber 8. The inner wall of the flip plate 93 is fixedly connected with a vertical rod 92, and the end of the vertical rod 92 away from the flip plate 93 is fixedly connected with a locking block 94.

[0033] It should be noted that: Material feeding stage: The mechanical linkage between the shaking component 10 and the feeding component 9 is completed entirely by the opening and closing action of the flip plate 93. There are no independent driving components, realizing efficient reuse of power. Its shaking action and the feeding of the flip plate 93 are triggered synchronously and precisely coordinated. When the downstream cigarette machine unit sends a material demand signal, the feeding component 9 starts, the moving end of cylinder 2 91 retracts and drives the flip plate 93 to rotate downward around the hinge point through the mounting seat 95, opening the feeding port of the inner chamber 8. At the same time as the flip plate 93 rotates, the upright rod 92 fixed to its inner wall moves in a circular motion synchronously with the flip plate 93. The locking block 94 at the end of the upright rod 92 moves accordingly and makes contact with the sliding plate 104 on the side wall of the movable seat 102.

[0034] After the locking block 94 contacts and slides with the slide plate 104, the continuous rotation of the flip plate 93 causes the locking block 94 to squeeze the slide plate 104. At the same time, the squeezing force is transmitted to the rotating rod 108 through the movable seat 102, causing the rotating rod 108 to rotate around the hinge point with the hinge seat 13. During the rotation of the rotating rod 108, the torsion spring 109 sleeved on its outer wall is twisted synchronously, so that the torsion spring 109 generates elastic potential energy and is in an energy storage state. During this process, the movable seat 102 rotates synchronously with the rotating rod 108, causing the fixed plate 103, the crossbar 107, and the partition plate 101 at its end to move away from the fixed frame 11, reserving space for subsequent striking actions.

[0035] When the flip plate 93 rotates to a certain angle, the locking block 94, along with the circular motion of the upright rod 92, completely separates from the sliding plate 104. At this moment, the torsion spring 109 instantly releases its stored elastic potential energy, causing the rotating rod 108 to rotate rapidly in the opposite direction, thereby driving the movable seat 102 and the fixed plate 103 to quickly reset towards the fixed frame 11. During the reset process of the fixed plate 103, several partition plates 101 on its two end crossbars 107 will quickly strike the outer wall of the fixed frame 11 with a certain impact force. The protruding structure at the end of the partition plate 101 can concentrate and transmit the striking force, causing the fixed frame 11 to generate high-frequency small-amplitude vibration. This vibration is directly transmitted to the filter screen 12 fixed to the fixed frame 11, removing the tobacco stuck in the mesh of the filter screen 12 and adhering to its surface. The residual tobacco on the fixed frame 11 is quickly shaken off; the shaken tobacco falls into the downstream cigarette machine unit's working hopper along with the tobacco in the inner chamber 8 under the action of gravity, achieving zero-residue feeding of tobacco, completely avoiding single-time metering deviation caused by tobacco residue, and ensuring that the actual feeding amount of each weighing and metering is highly consistent with the calibrated value; when the flap 93 is closed and reset, the upright 92 and the locking block 94 move in the opposite direction with the flap 93, contact the sliding plate 104 again and complete a squeezing and separation action, driving the shaking component 10 to complete a second slight tap, further shaking off the small amount of residual tobacco on the filter screen 12 and the fixed frame 11 after the feeding is completed, ensuring that there is no residual material in the inner chamber 8, and establishing a clean chamber environment for the next round of tobacco feeding and metering.

[0036] In the tobacco feeding stage: In addition to its function of shaking and tapping, the partition plate 101 of the shaking component 10 also plays a role in diverting, distributing, and suppressing the drift of tobacco during the wind-driven tobacco feeding stage. Utilizing its varying lengths and staggered distribution, it adapts to the airflow characteristics of wind-driven tobacco feeding, optimizing the distribution of tobacco within the chamber from the source. When the tobacco enters the inner chamber 8 through the feeding pipe 21, it flows in a high-speed bundle shape due to wind transport. Direct impact on the chamber body could easily lead to one-sided accumulation and stratification of lightweight tobacco. However, the partition plates 101 inside the inner chamber 8 are arranged at varying heights along the crossbar 107 and cover the outlet area of ​​the feeding pipe 21. After the bundle-like tobacco enters the inner chamber 8, it first collides with the partition plates 101 of different sizes, being divided into multiple dispersed tobacco streams. The originally concentrated airflow is dispersed due to the collision, and the conveying speed of the tobacco is greatly reduced. The multiple streams of tobacco after being divided by the partition plate 101 will fall in all directions along the side wall of the partition plate 101, instead of rushing directly to one side of the chamber. This allows the tobacco to be evenly spread above the fixed frame 11 and below the inner chamber 8, avoiding one-sided accumulation. At the same time, after the airflow is dispersed, its power to suspend the light tobacco and tobacco dust is greatly reduced, effectively reducing the occurrence of floating tobacco and stratification, and making the tobacco form a uniform accumulation state in the chamber. In addition, the filter screen 12 can separate the air and smoke during the fall of the tobacco, and discharge the airflow conveyed by the airflow through the air outlet 14 and the air delivery pipe 22, avoiding the turbulent airflow in the chamber from disturbing the distribution of tobacco again, and ensuring that the tobacco is in a stable and uniform accumulation state after entering the chamber.

[0037] It should be noted that the specific model and specifications need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A tobacco weighing and metering device, comprising an upper shell (1) and a lower shell (3), wherein a fixing frame (2) is provided on one side of the lower shell (3), and a support plate (7) and an inner chamber (8) are provided inside the lower shell (3), wherein a fixing frame (11), a filter screen (12), and an air outlet pipe (14) are provided inside the inner chamber (8), characterized in that, The support plate (7) is connected to a weighing component (5) and a reset component (6). An upper tobacco detection sensor (4) is provided on one side of the lower shell (3). The system also includes: The feeding assembly (9) is located below the inner chamber (8) and is used for discharging tobacco shreds; A shaking component (10) is connected to a fixed frame (11) and the shaking component (10) is used to facilitate the collection of tobacco.

2. The tobacco shred weighing and metering device according to claim 1, characterized in that, The upper shell (1) is fixedly connected to the lower shell (3). One side of the lower shell (3) is fixedly connected to the fixing frame (2). The fixing frame (2) is provided with an air delivery pipe (22) and a wire feeding pipe (21) respectively. One end of the air delivery pipe (22) and the wire feeding pipe (21) is connected to the inner chamber (8). The side wall of the inner chamber (8) is fixedly connected with an installation plate (81).

3. The tobacco shred weighing and metering device according to claim 1, characterized in that, The weighing assembly (5) includes a fixed base (51), which is T-shaped. One end of the fixed base (51) is fixedly connected to the support plate (7), and the other end of the fixed base (51) is fixedly connected to a weighing sensor (52). One end of the weighing sensor (52) is provided with an extension block (53), and the extension block (53) is movably connected to a bolt rod (54). One end of the bolt rod (54) passes through the side wall of the support plate (7) and is fixedly connected to the top of the inner chamber (8). The support plate (7) is fixedly connected to the lower shell (3).

4. The tobacco shred weighing and metering device according to claim 1, characterized in that, The reset assembly (6) includes a cylinder (61) and an outer cylinder (62). The cylinder (61) is fixedly connected to the outer cylinder (62). One end of the cylinder (61) passes through the side wall of the outer cylinder (62). One end of the outer cylinder (62) is fixedly connected to the support plate (7). The outer cylinder (62) is provided with a connecting rod (63) and an inner column (64).

5. The tobacco shred weighing and metering device according to claim 4, characterized in that, The connecting rod (63) is T-shaped. One end of the connecting rod (63) is fixedly connected to the cylinder (61). The inner column (64) is fixedly connected to the inner chamber (8). The side wall of the inner column (64) is provided with a through hole (65). The through hole (65) is frustum-shaped. One end of the connecting rod (63) is located inside the through hole (65).

6. The tobacco shred weighing and metering device according to claim 2, characterized in that, The fixed frame (11) is arranged in a "V" shape. The fixed frame (11) is fixedly connected to the inner chamber (8). The side wall of the fixed frame (11) is fixedly connected to the filter screen (12). The fixed frame (11) is located below the air outlet pipe (14). One end of the air outlet pipe (14) is connected to the air delivery pipe (22). The side wall of the fixed frame (11) is fixedly connected to a hinge seat (13).

7. The tobacco shred weighing and metering device according to claim 6, characterized in that, The shaking assembly (10) includes a movable seat (102) and a rotating rod (108). The rotating rod (108) is arranged in an "I" shape. The movable seat (102) is fixedly connected to the outer wall of the rotating rod (108). The rotating rod (108) is rotatably connected to the hinge seat (13). A torsion spring (109) is sleeved on the outer wall of the rotating rod (108). The two ends of the torsion spring (109) are fixedly connected to the side walls of the rotating rod (108) and the hinge seat (13), respectively.

8. The tobacco shred weighing and metering device according to claim 7, characterized in that, The side wall of the movable seat (102) is provided with a movable groove (106), and the inner wall of the movable groove (106) is slidably connected with a sliding plate (104). The movable groove (106) is provided with a telescopic spring (105), and the two ends of the telescopic spring (105) are fixedly connected to the inner wall of the movable groove (106) and the side wall of the sliding plate (104), respectively.

9. The tobacco shred weighing and metering device according to claim 7, characterized in that, One end of the movable seat (102) is provided with a fixed plate (103), and the two ends of the fixed plate (103) are fixedly connected with crossbars (107). The outer wall of the crossbars (107) is fixedly connected with several partition plates (101) of different lengths.

10. A tobacco shred weighing and metering device according to claim 2, characterized in that, The feeding assembly (9) includes a second cylinder (91) and a flap (93). One end of the second cylinder (91) is rotatably connected to the mounting plate (81), and the other end of the second cylinder (91) is rotatably connected to a mounting base (95). The mounting base (95) is fixedly connected to the side wall of the flap (93). The flap (93) abuts against the lower end of the inner chamber (8). A vertical rod (92) is fixedly connected to the inner wall of the flap (93), and a locking block (94) is fixedly connected to the end of the vertical rod (92) away from the flap (93).

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