Shredding device and shredding method for tobacco sheets

Abstract

The tobacco sheet shredding device comprises a cutting mechanism, a guide mechanism, a power mechanism, a monitoring mechanism, a wrinkle removing mechanism and a control mechanism, the cutting mechanism adopts vertical arrangement of a first cutter and a second cutter, an aerosol generating sheet is subjected to two times of slitting in a vertical space to form aerosol generating filaments, and the aerosol generating filaments are arranged on the guide mechanism. By means of the step-by-step cutting mode, the problem of excessive breaking or uneven size possibly caused by single-time cutting is solved, and the shape of the aerosol generating wire is more regular; the guiding mechanism comprises a grid fence and a negative pressure adsorption part, the grid fence can effectively guide the conveying path of the aerosol generating strip materials, deviation or accumulation caused by gravity or airflow disturbance is prevented, the negative pressure adsorption part generates negative pressure airflow, the adsorption effect of the aerosol generating strip materials on the grid fence is enhanced, and the aerosol generating strip materials are more stable. And it is ensured that the aerosol generating strip is tightly attached to the surface of the grid and stably moves to the second cutter.

Description

Technical Field

[0001] This patent relates to the field of dust removal equipment for reconstituted tobacco production, specifically to a shredding device and shredding method for tobacco sheets. Background Technology

[0002] In industrial production, tobacco sheets, such as reconstituted tobacco, need to be shredded to form uniform shredded material for subsequent processing. Traditional shredding equipment typically includes two stages: preliminary cutting and secondary cutting. The preliminary cutting cuts the aerosol-generated sheets into strips, while the secondary cutting further subdivides the aerosol-generated strips into shreds.

[0003] However, in actual production, due to airflow disturbances, uneven physical properties of the tobacco sheet itself, or wrinkles generated during pre-processing, the aerosol generating strip is prone to speed mismatch between two cuts. When the aerosol generating strip is too loose, it will accumulate in the cutting area, resulting in insufficient secondary cutting and the production of uneven filaments; when the aerosol generating strip is too taut, it is prone to breakage due to excessive tension, causing paper jams or breakage accidents, seriously affecting production efficiency and product quality.

[0004] In existing technologies, shredding devices often lack real-time monitoring and adaptive adjustment mechanisms, making it impossible to dynamically respond to changes in the shape of tobacco sheets and thus difficult to maintain a stable cutting process. Furthermore, the guide mechanisms are simply designed, relying solely on mechanical guidance, which cannot effectively address airflow interference or tobacco sheet wrinkles, further exacerbating cutting anomalies.

[0005] Therefore, there is an urgent need for a tobacco sheet cutting device and method that can monitor the shape of the tobacco sheet in real time, automatically adjust the cutting parameters, and have a wrinkle removal function. Summary of the Invention

[0006] This patent aims to solve the problems of paper jams, tears, and unstable cutting quality caused by speed mismatch or tobacco sheet wrinkles during the cutting process. This patent provides the following technical solutions:

[0007] In a first aspect, a shredding device for tobacco sheets is provided, comprising: a cutting mechanism for secondary cutting of aerosol generating sheets; a guiding mechanism for assisting the cutting mechanism in cutting aerosol generating filaments; a power mechanism for providing cutting power to the cutting mechanism; and a frame for housing the cutting mechanism, the guiding mechanism, and the frame. The cutting mechanism includes a first cutter and a second cutter, which are arranged vertically and the first cutter is positioned above the second cutter. The guiding mechanism is positioned between the first cutter and the second cutter such that after the aerosol generating sheets are initially cut by the first cutter to form aerosol generating strips, which fall into the guiding mechanism, the aerosol generating strips are then further cut by the second cutter after passing through the guiding mechanism to form aerosol generating filaments.

[0008] Furthermore, the guiding mechanism includes a negative pressure adsorption component and a mesh grid. The mesh grid has multiple grid channels running vertically through it. The negative pressure adsorption component enhances the aerosol generation strips through the mesh grid by using negative pressure adsorption. The negative pressure adsorption component is located beside the mesh grid and fixed to the frame. The mesh grid is located directly below the first cutter and directly above the second cutter.

[0009] Furthermore, by adjusting the size of the power mechanism, the rotational speeds of the first and second cutters are changed, thereby altering the cutting shape of the aerosol-generated strip. The first and second cutters rotate on the frame via rollers. The blade shape of the first cutter is distributed circumferentially along the rotation axis, while the blade shape of the second cutter is distributed axially along the rotation axis.

[0010] Furthermore, the slicing device also includes a monitoring mechanism, a wrinkle removal mechanism, and a control mechanism. The control mechanism connects to and controls the monitoring mechanism, the wrinkle removal mechanism, and the power mechanism. The monitoring mechanism monitors the cutting shape after the initial cut and transmits the monitoring results to the control mechanism. The control mechanism adjusts the power mechanism and / or the wrinkle removal mechanism and adjusts the aerosol-generated strip with abnormal shape during the initial cut to the aerosol-generated strip with normal shape.

[0011] Furthermore, the monitoring mechanism and the wrinkle removal mechanism are mounted on the frame and positioned between the first cutter and the second cutter. The wrinkle removal mechanism includes an air outlet nozzle assembly, a rotating shaft, and a wrinkle removal motor. The air outlet nozzle assembly is mounted on the rotating shaft, and the wrinkle removal motor controls the rotating shaft to change the airflow direction of the air outlet nozzle assembly. The wrinkle removal motor can also adjust the airflow speed of the air outlet nozzle assembly. The air blown out by the air outlet nozzle assembly is air, the airflow temperature of the air outlet nozzle assembly is 15~30℃, and the airflow speed of the air outlet nozzle assembly is 10~15m / s. The monitoring mechanism includes an imaging component, which monitors the cutting morphology of the aerosol-generated strip in real time and determines whether the aerosol-generated strip is in a normal or abnormal cutting morphology.

[0012] Furthermore, if the aerosol-generated strip has an abnormal cutting shape, the monitoring mechanism generates an abnormal shape signal and transmits the abnormal shape signal to the control mechanism; and / or the monitoring mechanism generates a flatness abnormality signal and transmits the flatness abnormality signal to the control mechanism.

[0013] Furthermore, if the control mechanism receives a morphological abnormality signal that is too loose, the control mechanism increases the power of the cutting mechanism to make the cutting mechanism cut into normal aerosol-generated filaments; if the control mechanism receives a morphological abnormality signal that is too taut, the control mechanism decreases the power of the cutting mechanism to make the cutting mechanism cut into normal aerosol-generated filaments.

[0014] Furthermore, if the control mechanism receives a flatness abnormality signal, the control mechanism controls the wrinkle removal mechanism to remove wrinkles from the uneven parts of the aerosol-generated strip, and then the cutting mechanism cuts it into normal aerosol-generated filaments.

[0015] Furthermore, the slicing device also includes a transport mechanism located below the second cutter, on which the cut aerosol filaments fall from the second cutter onto the transport mechanism.

[0016] Furthermore, a slicing method is provided, applicable to the aforementioned slicing device, comprising: step S1: feeding in aerosol generating sheets and cutting the aerosol generating sheets into aerosol generating strips; step S2: monitoring the aerosol generating strips and adjusting abnormal aerosol generating strips to normal aerosol generating strips; step S3: cutting the aerosol generating strips into aerosol generating filaments and discharging them.

[0017] This patent has the following beneficial effects:

[0018] 1. A cutting device and method for tobacco sheets are provided, comprising a cutting mechanism, a guiding mechanism, a power mechanism, a monitoring mechanism, a wrinkle-removing mechanism, and a control mechanism, forming a highly efficient, stable, and highly adaptive cutting system. The guiding mechanism is positioned between a first cutter and a second cutter, allowing the aerosol-generating sheet to be initially cut by the first cutter into aerosol-generating strips that fall into the guiding mechanism. After passing through the guiding mechanism, the aerosol-generating strips are further cut by the second cutter into aerosol-generating filaments. This step-by-step cutting method avoids the problems of excessive breakage or uneven size that may occur with single-cutting, resulting in a more regular shape of the aerosol-generating filaments and meeting the process requirements of high-end aerosol products.

[0019] 2. In this patent, the cutting mechanism employs a vertical arrangement of a first cutter and a second cutter. The first cutter performs an initial cut, separating the aerosol-generating sheet into aerosol-generating strips. The second cutter performs a secondary cut, refining the aerosol-generating strips into aerosol-generating filaments. Through multi-stage cutting and real-time monitoring, the uniformity and consistency of the tobacco sheet's transformation from sheet to filament are ensured, thereby improving the quality of the final product.

[0020] 3. In this patent, a guiding mechanism is positioned between the first and second cutters, comprising a grid and a negative pressure adsorption component. The grid has multiple vertically penetrating mesh channels, effectively guiding the conveying path of the aerosol-generating strip and preventing it from shifting or accumulating due to gravity or airflow disturbance. The negative pressure adsorption component generates negative pressure airflow to enhance the adsorption of the aerosol-generating strip on the grid, ensuring that the aerosol-generating strip adheres tightly to the mesh surface and moves smoothly to the second cutter. This guiding mechanism is particularly suitable for lightweight or easily dispersed tobacco sheets, such as tobacco leaf sheets, solving the common problems of jamming or entanglement in traditional cutting, thereby improving production efficiency and equipment reliability.

[0021] 4. In this patent, the power mechanism controls the rotational speed of the first and second cutters via a speed-regulating motor, thereby dynamically adjusting the cutting pattern. When the aerosol-generating strip is too loose, increasing the rotational speed of the second cutter increases the tensile force on the aerosol-generating strip, tightening it and restoring it to normal conveying status; when the aerosol-generating strip is too taut, decreasing the rotational speed of the second cutter reduces tension and prevents breakage. This adjustment capability allows the device to adapt to aerosol-generating strips with different physical properties, such as varying humidity, thickness, or toughness, ensuring stable cutting quality and reducing material waste and maintenance requirements.

[0022] 5. In this patent, the monitoring mechanism captures images of the aerosol-generated strip between the first and second cutters in real time using an imaging component, and analyzes its morphology using image processing algorithms. When an anomaly is detected, such as excessive looseness, excessive tautness, or surface wrinkles, the monitoring mechanism generates a morphology abnormality signal or a flatness abnormality signal and transmits it to the control mechanism. The control mechanism responds quickly according to the signal type, adjusting the power mechanism or activating the wrinkle-removing mechanism. The wrinkle-removing mechanism includes an air nozzle assembly and a wrinkle-removing motor, which can precisely blow air onto the wrinkled areas, making the surface of the aerosol-generated strip flat, thus allowing it to pass smoothly through the second cutter. This real-time feedback and correction mechanism significantly reduces the incidence of paper jams, tears, or uneven cutting, improving the automation level of the production line and the product qualification rate.

[0023] 6. The control mechanism receives signals from the monitoring mechanism, runs a preset algorithm, and issues instructions to adjust the power mechanism and wrinkle-removing mechanism. This automated control reduces manual intervention, lowers operational difficulty, and improves response accuracy and efficiency. The control mechanism can also connect to the upper-level production management system to achieve data sharing and remote monitoring, further optimizing the production process. The transportation mechanism improves post-cutting processing; aerosol-generated filaments are transported to the next process via conveyor belts, achieving continuous production and reducing manual handling costs. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this patent, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this patent 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.

[0025] Figure 1 This is a three-dimensional structural diagram of the present patent;

[0026] Figure 2 This is a three-dimensional structural diagram of the wrinkle removal mechanism of this patent.

[0027] The reference numerals in the attached figures are explained as follows:

[0028] 100: Cutting mechanism;

[0029] 110: First cut;

[0030] 120: Second cut;

[0031] 200: Guiding mechanism;

[0032] 210: Wire mesh fence;

[0033] 220: Negative pressure adsorption component;

[0034] 300: Power mechanism;

[0035] 400: Rack;

[0036] 500: Monitoring agency;

[0037] 510: Monitoring bracket;

[0038] 520: Imaging component;

[0039] 600: Wrinkle removal clinic;

[0040] 610: Wrinkle-removing motor;

[0041] 620: Air outlet nozzle assembly;

[0042] 700: Transportation agencies;

[0043] 800: Control mechanism. Detailed Implementation

[0044] The detailed features and advantages of this patent are described below in the specific embodiments. The content is sufficient to enable any person skilled in the art to understand the technical content of this patent and implement it accordingly. Based on the specification, claims and drawings disclosed in this specification, a person skilled in the art can easily understand the related objectives and advantages of this patent.

[0045] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0046] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not indicate the only possible implementation. The terms "upper," "lower," etc., indicating orientation or positional relationships are defined with reference to the coordinates of the accompanying drawings and are only for the convenience of describing this patent 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, and therefore should not be construed as a limitation of this patent. The terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this patent belongs. The terminology used herein in the specification of this patent is for the purpose of describing particular embodiments only and is not intended to be limiting of this patent. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0048] A stepper motor is an electric motor that converts electrical pulse signals into corresponding angular or linear displacement. Its core structure consists of a stator and a rotor. The stator has multiple windings, while the rotor is made of permanent magnets or soft magnetic materials. When the controller delivers pulse currents to the motor's phase windings in a specific sequence, a rotating magnetic field is generated, attracting the rotor to rotate step by step. Each pulse signal drives the rotor to rotate by a fixed angle; therefore, its rotation is discrete and discontinuous.

[0049] Stepper motors are characterized by precise positioning, no cumulative error, and simple control, but their torque decreases at high speeds, and they are susceptible to step loss and resonance. They are widely used in applications requiring precise position control, such as 3D printers, CNC machine tools, and automated instruments.

[0050] A servo motor is an automatic control system whose core objective is to achieve precise speed, position, and torque control through a feedback mechanism. The system mainly consists of three parts: the servo motor, the encoder, and the servo driver. The servo motor itself can be an AC permanent magnet synchronous motor or a DC motor. During operation, the servo driver receives position or speed commands from a host controller such as a PLC and drives the motor to rotate. Simultaneously, the encoder installed at the motor's tail end detects the actual speed and position of the motor in real time and feeds it back to the driver. The driver compares the command value with the feedback value and continuously adjusts the output based on the resulting error until the error is eliminated.

[0051] This closed-loop control structure enables servo motors to have extremely high control precision, fast dynamic response, and strong overload capacity, and is commonly used in fields with demanding performance requirements such as robotics and high-precision machine tools.

[0052] A negative pressure fan is a device that operates by generating airflow at a pressure lower than the ambient air pressure. Its core structure consists of an impeller and a motor that drives it. When the impeller rotates at high speed driven by the motor, the blades force air to flow forward or sideways, creating a localized low-pressure zone on one side of the fan's intake. This low-pressure zone "draws in" surrounding air or air near object surfaces, achieving the functions of ventilation, exhaust, or adsorption. Compared to blowers that generate positive pressure airflow, negative pressure fans focus more on generating suction at the source.

[0053] Negative pressure fans have a relatively simple structure and low cost, and are widely used in fields such as heat dissipation of electronic equipment, adsorption of light materials, and ventilation.

[0054] A vacuum generator is a jet-based device that uses a positive pressure air source to create a vacuum. Its main structure includes a nozzle, a receiving chamber, and a diffusion chamber. During operation, it requires a compressed air source. When high-pressure compressed air passes through the nozzle, it accelerates rapidly and is ejected. This high-speed airflow draws in air from the receiving chamber, creating a stable vacuum at the outlet of the receiving chamber.

[0055] Vacuum generators are small in size, fast in response, have no moving parts, and are highly reliable. They are particularly suitable for low-load, high-frequency vacuum adsorption operations in clean environments or in situations requiring frequent start-stop. They are commonly used for workpiece gripping and handling on automated production lines.

[0056] Industrial cameras are the core image acquisition components of machine vision systems, designed to meet the reliability, stability, and high performance requirements of industrial applications. They mainly consist of an image sensor (such as CCD or CMOS), a lens interface, an image acquisition processor, a communication interface, and a robust housing. Their working principle is as follows: the target image is projected onto the image sensor through the lens; the sensor converts the light signal into an electrical signal; this signal is then digitized and preliminarily processed by the internal processor; finally, the digital image data is transmitted to a host computer for analysis via the communication interface.

[0057] Unlike ordinary cameras, industrial cameras have higher image quality, better anti-interference capabilities, more stable performance, and more precise external trigger control functions. They are widely used in industrial automation fields such as quality inspection, dimensional measurement, character recognition, and robot guidance.

[0058] A control box is an enclosed enclosure or cabinet that integrates electrical control components; it serves as the "nerve center" of automated equipment. Its basic structure includes the enclosure, mounting plate, door panel, and terminal blocks. Internally, it typically houses various electrical components such as PLCs (Programmable Logic Controllers), circuit breakers, contactors, relays, frequency converters, servo drives, and power modules. These components are connected through internal wiring to form a complete control system. The principle of a control box is to centrally manage and distribute power, and according to preset programs or logic, coordinate the actions, states, and protection mechanisms of external actuators through the components within the box, ensuring the safe, orderly, and automated operation of the entire equipment or production line.

[0059] To make the objectives, technical solutions, and advantages of this patent clearer, the embodiments of this patent will be described in further detail below with reference to the accompanying drawings.

[0060] A shredding device for tobacco sheets, please refer to Figures 1-2 The system includes a cutting mechanism 100, a guiding mechanism 200, a power mechanism 300, a monitoring mechanism 500, a wrinkle removal mechanism 600, and a control mechanism 800. The cutting mechanism 100 includes a first cutter 110 and a second cutter 120, which are arranged vertically with the first cutter 110 positioned above the second cutter 120. The guiding mechanism 200 is positioned between the first cutter 110 and the second cutter 120, so that after the aerosol generating sheet is initially cut by the first cutter 110, it forms an aerosol generating strip and falls into the guiding mechanism 200. After passing through the guiding mechanism 200, the aerosol generating strip is cut a second time by the second cutter 120 to form an aerosol generating filament.

[0061] Among them, aerosol-generated sheets, aerosol-generated strips, and aerosol-generated filaments are classified according to the shape of the tobacco sheets after they are cut.

[0062] The design of the frame 400 has been optimized to ensure a reasonable spatial layout between the various mechanisms, facilitating maintenance and operation. The front of the frame 400 is a square shape with an open top. The side panels are used to fix the cutting mechanism 100, the guiding mechanism 200, the power mechanism 300, the monitoring mechanism 500, and the wrinkle removal mechanism 600. The transport mechanism 700 is located below the second cutter 120 and extends vertically from the space between the second cutter 120 and the base plate of the frame 400, forming a complete cutting production line.

[0063] The frame 400, serving as the base of the device, can be made of high-strength steel or aluminum alloy, possessing sufficient rigidity and stability to support the operation of all mechanisms. The surface of the frame 400 can also be treated with rust prevention to adapt to humid environments and extend its service life.

[0064] The cutting mechanism 100 is a key part for performing the cutting task, and includes a first cutter 110 and a second cutter 120. The first cutter 110 is located above the second cutter 120, and the two are arranged vertically.

[0065] The first cutter 110 includes two parallel small cutters mounted on the frame 400 via rollers and connected to the power mechanism 300. The two small cutters in the first cutter 110 rotate in opposite directions. When the aerosol generating sheet is fed into the first cutter 110 from the upstream equipment, the opposite rotation of the two small cutters generates a highly efficient shearing action, cutting the aerosol generating sheet into uniform aerosol generating strips.

[0066] The blade shape of the first cutting blade 110 is distributed circumferentially along the axis of rotation, meaning that the blades are arranged around the axis, which is suitable for transverse cutting and slicing wide sheets into narrow strips.

[0067] The second cutter 120 also includes two parallel small cutters, which are mounted on the frame 400 via rollers and connected to the power mechanism 300. The two small cutters in the second cutter 120 rotate in opposite directions, but their blade shapes are distributed along the rotation axis, that is, the blades are arranged along the axial direction, which is suitable for longitudinal cutting to cut aerosol-generated strips into aerosol-generated filaments.

[0068] The gap between the small cutters of the second cutter 120 is adjustable to accommodate aerosol-generating strips of different thicknesses. During the cutting process, the rotational speeds of the first cutter 110 and the second cutter 120 are coordinated to ensure that the aerosol-generating strip maintains appropriate tension before the second cut.

[0069] The guiding mechanism 200 is positioned between the first cutter 110 and the second cutter 120, acting as a bridge to ensure that the aerosol-generated strip is smoothly transferred from the first cutter 110 to the second cutter 120. The guiding mechanism 200 includes a mesh grid 210 and a negative pressure adsorption element 220.

[0070] The mesh fence 210 is made of metal or plastic and has multiple vertically connected mesh channels. The mesh shape can be square, circular, triangular, quadrilateral, pentagonal, or hexagonal. It is designed to disperse and guide the aerosol generating strips, preventing them from accumulating or tangling. The mesh fence 210 is installed directly below the first cutter 110 to receive the falling aerosol generating strips and guide them directly above the second cutter 120.

[0071] The negative pressure adsorption component 220 is typically a negative pressure fan or vacuum generator, installed beside the mesh fence 210 and connected to the area of ​​the mesh fence 210 via a pipe. When the negative pressure adsorption component 220 is running, it generates a negative pressure airflow on the surface of the mesh fence 210, adsorbing aerosols to form strips, which then slide tightly against the mesh surface.

[0072] This adsorption force overcomes the gravity and other disturbances of the aerosol generating strip, ensuring stable and directional transport. The suction force of the negative pressure adsorption element 220 is adjustable and can be optimized according to the characteristics of the aerosol generating strip.

[0073] The power mechanism 300 provides power to the cutting mechanism 100 and typically includes a speed-regulating motor and a transmission system. The speed-regulating motor is connected to the roller assembly of the first cutter 110 and the second cutter 120 via a belt, gear, or direct drive.

[0074] The power mechanism 300 allows independent control of the rotational speeds of the first cutter 110 and the second cutter 120, thus enabling flexible adjustment of the cutting process. When processing easily tearable aerosol-generated strips, the rotational speed of the second cutter 120 can be reduced to decrease tensile force; when processing loose aerosol-generated strips, the rotational speed of the second cutter 120 can be increased to increase tension. The power mechanism 300 is connected to and receives regulation from the control mechanism 800.

[0075] The monitoring mechanism 500 is used to monitor the cutting pattern in real time to ensure cutting quality. The monitoring mechanism 500 includes an imaging component 520 and a monitoring bracket 510.

[0076] Imaging assembly 520 includes a high-resolution industrial camera mounted on monitoring bracket 510, aligned with the area between first cutter 110 and second cutter 120. Imaging assembly 520 also includes a signal generator connected to the industrial camera. The industrial camera continuously captures images of the aerosol-generated strip and transmits the image data to the signal generator. The signal generator has built-in image processing software that analyzes the morphological parameters of the aerosol-generated strip, such as looseness, tautness, and surface flatness. By comparing the real-time images with preset standards, the software determines whether the aerosol-generated strip is in a normal state and sends corresponding signals to control mechanism 800.

[0077] If the aerosol-generated strip has an abnormal cutting shape, the monitoring mechanism 500 generates an abnormal shape signal and transmits the abnormal shape signal to the control mechanism 800; if the monitoring mechanism 500 generates a flatness abnormal signal and transmits the flatness abnormal signal to the control mechanism 800.

[0078] If the control mechanism 800 receives a morphological abnormality signal that is too loose, the aerosol-generated strip will appear piled up or bent. The control mechanism 800 will increase the power mechanism 300 so that the cutting mechanism 100 cuts it into normal aerosol-generated filaments. If the control mechanism 800 receives a morphological abnormality signal that is too taut, the aerosol-generated strip will appear overstretched. The control mechanism 800 will decrease the power mechanism 300 so that the cutting mechanism 100 cuts it into normal aerosol-generated filaments.

[0079] The wrinkle-removing mechanism 600 is used to correct surface wrinkles of the aerosol-generating strip, ensuring that the aerosol-generating strip passes smoothly through the second cutter 120. The wrinkle-removing mechanism 600 includes an air outlet nozzle assembly 620 and a wrinkle-removing motor 610.

[0080] The air outlet nozzle assembly 620 consists of multiple air outlet nozzles arranged on a rotating shaft, which is connected to a wrinkle-removing motor 610 via a coupling. The wrinkle-removing motor 610 is either a stepper motor or a servo motor, which can precisely control the rotation angle and speed of the shaft, thereby adjusting the direction of the air outlet nozzles. The air outlet nozzles are connected to a compressed air source to generate a high-speed airflow.

[0081] The air outlet nozzle assembly 620 blows out air, the air outlet nozzle assembly 620 blows air at a temperature of 15~30℃, and the air outlet nozzle assembly 620 blows air at a speed of 10~15m / s.

[0082] When the control mechanism 800 receives a flatness abnormality signal, it controls the wrinkle-removing motor 610 to rotate, aligning the air nozzle with the wrinkled area and adjusting the blowing speed and duration. The airflow blows across the surface of the aerosol-generated strip, smoothing it out. The number and layout of the nozzles in the wrinkle-removing mechanism 600 are adjustable to accommodate aerosol-generated strips of different widths.

[0083] The control mechanism 800 is the brain of the device, typically a programmable logic controller (PLC) or an industrial computer, and is installed inside the control box. The control mechanism 800 connects to the monitoring mechanism 500, the wrinkle-removing mechanism 600, the power mechanism 300, and the transport mechanism 700, enabling centralized control. The control mechanism 800 receives signals from the monitoring mechanism 500, runs control algorithms, and outputs instructions to other mechanisms.

[0084] When a signal indicating an excessively loose shape is received, the control mechanism 800 increases the output of the speed-regulating motor, raising the speed of the second cutter 120. When a signal indicating an excessively straight shape is received, the control mechanism 800 decreases the output of the speed-regulating motor, reducing the speed of the second cutter 120. When a signal indicating an abnormal flatness is received, the control mechanism 800 activates the wrinkle-removing motor 610 and the air nozzle to blow air onto the designated area. The control mechanism 800 may also include a human-machine interface, allowing the operator to set parameters and view the status.

[0085] A transport mechanism 700 is positioned below the second cutter 120 to collect and convey the cut aerosol-generated filaments. The transport mechanism 700 is typically a belt conveyor, driven by a motor, and its speed is synchronized with the cutting process. After falling from the second cutter 120, the aerosol-generated filaments land on the conveyor belt and are transported to downstream equipment, such as a dryer or packaging machine. The conveyor belt surface has an anti-stick coating to prevent the aerosol-generated filaments from adhering to it.

[0086] Specifically, the transport mechanism 700 includes a frame and a conveyor belt. The frame has a square main frame with four supporting feet at the bottom. The two sides of the main frame are rotatable parallel roller structures. The conveyor belt is tensioned and circulates through the parallel rollers to transport aerosol-generated filaments.

[0087] The application of the slicing device begins with the feeding of the aerosol generating sheet. The aerosol generating sheet is unrolled from a roll or stack and fed into the first cutter 110 by a feeding device. The high-speed rotation of the first cutter 110 cuts the aerosol generating sheet into multiple aerosol generating strips, which fall due to gravity and enter the guide mechanism 200.

[0088] Under the combined action of the mesh grid 210 and the negative pressure adsorption component 220, the aerosol-generating strip is uniformly dispersed and guided to the second cutter 120. During this process, the industrial camera of the monitoring unit 500 captures images of the aerosol-generating strip in real time, and the control unit 800 analyzes the images and determines the shape.

[0089] If the shape is normal, the aerosol-generated strip directly enters the second cutter 120; if abnormal, the control mechanism 800 triggers the adjustment mechanism 300 or the wrinkle removal mechanism 600.

[0090] If the aerosol-generated strip is too loose, the control mechanism 800 increases the rotation speed of the second cutter 120 to increase the tensile force and tighten the aerosol-generated strip; if it is too taut, the control mechanism 800 decreases the rotation speed of the second cutter 120 to reduce tension and prevent breakage; if there are wrinkles, the control mechanism 800 activates the wrinkle-removing mechanism 600 to blow air and smooth the aerosol-generated strip.

[0091] The second cutter 120 then performs a secondary cut, transforming the aerosol-generating strip into aerosol-generating filaments. The aerosol-generating filaments fall onto the conveyor belt of the transport mechanism 700 and are transported to the next process.

[0092] Throughout the process, the control mechanism 800 coordinates all components to ensure efficient and stable cutting. It is suitable for various tobacco sheets, such as tobacco sheets, herbal materials, or synthetic materials. By adjusting parameters, it can handle tobacco sheets with different moisture content, thickness, and toughness, achieving high-quality production.

[0093] A shredding method, applicable to the aforementioned shredding device, comprising:

[0094] Step S1: Input aerosol generating sheets and cut the aerosol generating sheets into aerosol generating strips; Step S2: Monitor the aerosol generating strips and adjust abnormal aerosol generating strips to normal aerosol generating strips; Step S3: Cut the aerosol generating strips into aerosol generating filaments and discharge them.

[0095] This patent specification uses directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom" to describe various example structural parts and components of this patent. However, the use of these terms is merely for illustrative purposes and is based on the orientation of the examples shown in the accompanying drawings. Since the embodiments disclosed in this patent can be arranged in different orientations, these directional terms are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or the same as the direction of gravity.

[0096] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this patent will not describe the various possible combinations separately.

[0097] Furthermore, various implementations of this patent can be combined in any way, and as long as they do not violate the spirit of this patent, they should also be regarded as the content disclosed in this patent.

Claims

1. A cutting device for tobacco sheet, characterized in that, The cutting mechanism is used for secondary cutting of the aerosol generating sheet material. The guide mechanism is used for assisting the cutting mechanism to cut the aerosol generating filament. The power mechanism is used for providing cutting power to the cutting mechanism. The frame is used for arranging the cutting mechanism, the guide mechanism and the frame. The cutting mechanism comprises a first cutter and a second cutter, the first cutter and the second cutter are arranged in a vertical direction, and the first cutter is arranged above the second cutter. The guide mechanism is arranged between the first cutter and the second cutter, so that the aerosol generating sheet material is formed into an aerosol generating strip material after being initially cut by the first cutter and falls into the guide mechanism, and the aerosol generating strip material is formed into the aerosol generating filament after being secondarily cut by the second cutter after passing through the guide mechanism. The guide mechanism comprises a negative pressure suction accessory and a grid fence, the grid fence has a plurality of grid channels penetrating in a vertical direction, and the negative pressure suction accessory strengthens the aerosol generating strip material passing through the grid fence through negative pressure suction.

2. The shredding device of claim 1, wherein, The negative pressure suction accessory is arranged beside the grid fence and fixed on the frame. The grid fence is arranged directly below the first cutter and directly above the second cutter. The size of the power mechanism is adjusted so that the rotating speed of the first cutter and the second cutter changes, thereby changing the cutting form of the aerosol generating strip material.

3. The shredding device of claim 1, wherein, The first cutter and the second cutter rotate on the frame through a roller group. The blade shape of the first cutter is distributed circumferentially along the rotating shaft. The blade shape of the second cutter is distributed axially along the rotating shaft. The filament cutting device further comprises a monitoring mechanism, a wrinkle removing mechanism and a control mechanism, the control mechanism is connected and controls the monitoring mechanism, the wrinkle removing mechanism and the power mechanism.

4. The shredding device of claim 3, wherein, The monitoring mechanism monitors the cutting form after initial cutting and transmits the monitoring result to the control mechanism, the control mechanism regulates the power mechanism and / or the wrinkle removing mechanism and adjusts the aerosol generating strip material with abnormal form during initial cutting into the aerosol generating strip material with normal form. The monitoring mechanism and the wrinkle removing mechanism are arranged on the frame, and the monitoring mechanism and the wrinkle removing mechanism are arranged between the first cutter and the second cutter.

5. The shredding device of claim 4, wherein, The wrinkle removing mechanism comprises an air outlet nozzle assembly, a rotating shaft and a wrinkle removing motor, the air outlet nozzle assembly is arranged on the rotating shaft, the wrinkle removing motor controls the rotating shaft to change the blowing direction of the air outlet nozzle assembly, and the wrinkle removing motor can also adjust the blowing speed of the air outlet nozzle assembly. The blowing gas of the air outlet nozzle assembly is air, the blowing temperature of the air outlet nozzle assembly is 15-30℃, and the blowing speed of the air outlet nozzle assembly is 10-15m / s. The monitoring mechanism comprises an imaging assembly, the monitoring mechanism monitors the cutting form of the aerosol generating strip material in real time and judges whether the aerosol generating strip material is in normal cutting form or abnormal cutting form at this time. ​ 6. The shredding device of claim 5, wherein, If the aerosol generating strip material is in the abnormal cutting shape, the monitoring mechanism generates a shape abnormal signal and transmits the shape abnormal signal to the control mechanism; and / or the monitoring mechanism generates a flatness abnormal signal and transmits the flatness abnormal signal to the control mechanism.

7. The shredding device of claim 6, wherein, If the control mechanism receives the shape abnormal signal as a too-loose shape abnormal signal, the control mechanism increases the power mechanism so that the cutting mechanism cuts the normal aerosol generating filament material; If the control mechanism receives the shape abnormal signal as a too-tight shape abnormal signal, the control mechanism reduces the power mechanism so that the cutting mechanism cuts the normal aerosol generating filament material.

8. The shredding device of claim 6, wherein, If the control mechanism receives the flatness abnormal signal, the control mechanism controls the wrinkle removal mechanism to remove wrinkles from the uneven part of the aerosol generating strip material, and then the cutting mechanism cuts the normal aerosol generating filament material.

9. The shredding device of claim 1, wherein, The filament cutting device further comprises a conveying mechanism arranged below the second cutter, and the cut aerosol generating filament material falls into the conveying mechanism from the second cutter.

10. A method of shredding, characterized by, The filament cutting method is suitable for the filament cutting device as claimed in any one of claims 1-9, and the filament cutting method comprises: Step S1: feeding the aerosol generating sheet material and cutting the aerosol generating sheet material into aerosol generating strip material; Step S2: monitoring the aerosol generating strip material and adjusting the abnormal aerosol generating strip material into normal aerosol generating strip material; Step S3: discharging the aerosol generating strip material after cutting the aerosol generating strip material into aerosol generating filament material.

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