A trimming system for whole leaf tobacco and method thereof

Abstract

The application discloses a kind of whole cutting system and method for whole frame tobacco, it is related to tobacco processing technical field.The system includes base, conveying unit, tobacco pressing device, cutter device and control unit;Base is equipped with cutting station;Conveying unit is used to send whole frame tobacco into and send out cutting station;Tobacco pressing device is used to compact tobacco on cutting station;Cutter device includes cutter, pressing mechanism and swing mechanism, pressing mechanism drives cutter to move up and down, swing mechanism drives cutter to reciprocate in horizontal plane;Control unit is used to control the coordinated action of each device.The method includes: feeding positioning, pressing, swinging cutting and resetting discharge.The application is through the whole cutting mode of material static and cutter reciprocation, completely get rid of the dependence on artificial leaf laying and handle, can directly process whole frame tobacco, with the advantages of strong material adaptability, high cutting quality, high degree of automation.

Description

Technical Field

[0001] This invention relates to the field of tobacco processing technology, and more specifically, to a cutting system and method for whole frames of tobacco leaves. Background Technology

[0002] In the raw material preparation stage of a tobacco processing production line, tobacco leaves are typically handled in units of tobacco crates. Within a crate, the tobacco leaves are stacked layer by layer in leaf form, with their fiber orientation and leaf shape randomly distributed. Before entering subsequent processing steps, long tobacco leaves need to be cut into short leaves of specified lengths according to process requirements.

[0003] Currently, the most common tobacco leaf cutting solution in the industry is rotary cutter cutting, typically used in manual leaf-laying lines. The workflow of this solution is as follows: multiple workers stand on both sides of the conveyor line, arranging the tobacco leaves one by one or in bundles, ensuring the fiber direction is roughly perpendicular to the conveying direction, and spreading them evenly on the conveyor belt. The laid-out tobacco leaves are then conveyed to one or more rotary cutters, which rotate at high speed perpendicular to the conveying direction, transversely cutting the continuously laid-out tobacco leaves into two or three segments, which fall into downstream equipment. For example, Chinese invention patent application number CN200910094616.1 discloses a tobacco cutting device consisting of a sequentially arranged leaf-laying belt, a machine head, and a fixed frame, which cuts the tobacco leaves through the cooperation of an upper cutter mechanism and a lower cutter. Chinese invention patent with publication number CN104013091A discloses a rapid tobacco leaf sawing device, including a frame, a main conveyor belt, a cutting device and a ballast device. The ballast device includes a pressing chain belt, and the cutting device is set on the side of the main conveyor belt and uses a belt cutting tool to cut off the leaf stalk of the tobacco leaf.

[0004] However, the aforementioned technical solutions place extremely high demands on the neatness and uniformity of tobacco leaf arrangement and thickness. The tobacco leaves must be manually straightened and evenly laid out to ensure consistent cutting length and neat cut surfaces. For fully automated feeding with flipped frames, the tobacco leaves are randomly oriented, uneven in thickness, and vary in shape, making it difficult for the rotary cutter to cut them effectively. This can easily lead to problems such as stringing, blade breakage, incomplete cutting, or blockage, which directly hinders the automation upgrade of the preceding process. At the same time, to meet the feeding requirements of the rotary cutter, a large number of people must be retained for leaf laying and stacking. This results in dense on-site personnel, chaotic management, poor working environment, and high labor intensity, leading to a series of problems such as difficulty in recruiting workers, high labor costs for enterprises, and numerous safety hazards. Moreover, the rotary cutter has poor adaptability to tobacco leaves with high moisture content, high oil content, or strong fiber toughness, which can easily cause problems such as entanglement of the cutter shaft and incomplete cutting, affecting the continuous operation rate of the equipment and the cutting quality. Summary of the Invention

[0005] The purpose of this invention is to provide a cutting system and method for whole-frame tobacco leaves, which transforms the traditional mode of material movement and cutter rotation into a bin-type cutting mode where the material is stationary and the cutter reciprocates horizontally.

[0006] To achieve the above objectives, the present invention provides a cutting system for whole frames of tobacco leaves, comprising a base, a conveying unit, a tobacco pressing device, a cutting device, and a control unit, wherein: The base is equipped with a cutting station for cutting the entire frame of tobacco leaves.

[0007] The conveying unit is mounted on the base and is used to feed whole frames of tobacco leaves into and out of the cutting station. The conveying unit can be a conveyor belt conveyor located at the bottom of the base, used to carry and transport whole frames of tobacco leaves.

[0008] The tobacco pressing device is mounted on the base and located above the cutting station. It is used to compact the tobacco leaves at the cutting station. The device includes a third drive unit and multiple pressing plates located at the output end of the third drive unit. Each pressing plate corresponds to a different position of the tobacco leaves within the tobacco frame, and is used to compact and seal the loose tobacco leaves at the cutting station from above, forming a uniformly dense tobacco leaf block. Preferably, an elastic pad is attached to the lower surface of each pressing plate to prevent damage to the tobacco leaves.

[0009] The cutting device is mounted on the base and located above the cutting station, and is arranged side by side with the tobacco pressing device. The cutting device includes a cutter, a pressing mechanism, and a swinging mechanism. The pressing mechanism is used to drive the cutter to move up and down, controlling the depth to which the cutter cuts into the tobacco leaf; the swinging mechanism is used to drive the cutter to swing back and forth in the horizontal plane to achieve the cutting action.

[0010] Preferably, the cutting device includes at least two cutting blades and a first drive unit that matches and corresponds to each cutting blade and is independent of each other. Each first drive unit is connected to a corresponding cutting blade and is used to independently control the corresponding cutting blade to cut the tobacco leaves at the cutting station. The installation positions of the multiple cutting blades correspond one-to-one with the placement positions of the multiple tobacco leaves in the tobacco frame.

[0011] Preferably, the oscillating mechanism includes a second drive unit and a transmission unit. The second drive unit and the cutter are connected through the transmission unit, which converts the linear motion of the second drive unit into the reciprocating oscillation of the corresponding cutter in the horizontal plane. The transmission unit can be a crank-connecting rod mechanism or a lead screw transmission mechanism.

[0012] The control unit is connected to the conveying unit, the smoke suppressor, and the cutting device, respectively, and is used to control the coordinated operation of these three devices. The control unit can be a programmable logic controller (PLC) or an industrial computer, which controls the timing of each actuator according to preset process parameters.

[0013] Preferably, a smoke-blocking device located at the output end of the cutting station can also be raised and lowered on the base to prevent the cut tobacco leaves from tilting to the input end of the cutting station and to prevent the tobacco leaves from tilting and scattering in the feeding direction. The smoke-blocking device includes a fourth drive unit and a baffle. The fourth drive unit is set on the base, and the baffle is set at the output end of the fourth drive unit. The baffle is driven to move up and down by the fourth drive unit to block the tobacco leaves at the cutting station during the cutting process.

[0014] Preferably, the system further includes a scrap recovery device mounted on the base and located below the cutting station, for collecting and conveying scrap generated during the cutting process. The scrap recovery device includes a recovery hopper and a conveyor belt. The recovery hopper is located below the cutting station to collect scrap generated during the cutting process. The input end of the conveyor belt is connected to the output end of the recovery hopper, and the output end of the conveyor belt is connected to the input end of the next process, for conveying the scrap collected by the recovery hopper to the next process.

[0015] The present invention also provides a method for cutting a whole frame of tobacco leaves based on the above-described cutting system for whole frame tobacco leaves, specifically including the following steps: S100. After the whole frame of tobacco leaves is conveyed to the cutting station by the conveying unit, the conveying is stopped, and the tobacco leaves are left to stand still in the cutting station. S200: The tobacco leaves in the frame are compacted and fixed from above by the tobacco pressing device, so that the tobacco leaves in the frame are formed into a stable tobacco block; at the same time, the fourth drive unit drives the baffle to move downward to prevent the tobacco block on the cutting station from tipping over. S300, the cutting device drives the cutter to move downwards to the tobacco leaf block to perform the cutting action, and then drives the cutter to swing back and forth in the horizontal plane to cut the tobacco leaf block. Specifically, the pressing mechanism drives the cutter to move downwards so that the blade completely penetrates the tobacco leaf layer and contacts the bottom cutting surface; then the swinging mechanism is activated to drive the cutter to move back and forth in the horizontal plane, like the action of "stabbing" with a kitchen knife, to completely cut the tobacco leaf fibers. This action continues throughout the width of the tobacco leaf block until all the tobacco leaves at the corresponding position of the cutter are cut off. When the system has multiple independent cutters, different cutting modes can be selected according to the length requirements set in the process. For example, in the one-cut two-segment mode, only the middle cutter is activated for cutting; in the two-cut three-segment mode, the two cutters are activated sequentially for cutting. The independent control of multiple cutters allows the system to flexibly adapt to different cutting length requirements.

[0016] S400: The cut tobacco leaves are conveyed out of the cutting station by the conveying unit, and then the fourth drive unit drives the baffle to move upward. After cutting is completed, the cutter and the tobacco pressing device are lifted and reset as a whole, the conveying unit restarts, and the cut tobacco leaves are conveyed to the next process. Then, the fourth drive unit drives the baffle to move upward to prepare for the next batch of tobacco leaves to enter the cutting station.

[0017] The small amount of fragments and debris generated during the cutting process are collected through a recycling hopper and conveyed to the next process by a conveyor belt, keeping the work station clean.

[0018] Compared with existing technologies, the cutting system for whole-frame tobacco leaves provided by this invention achieves direct cutting of whole-frame tobacco leaves, completely eliminating the manual process of laying and arranging the leaves, thus removing the most critical obstacle to the full automation upgrade of the entire upstream process. Employing a bin-type compaction and oscillating cutting method, regardless of the fiber orientation or shape of the tobacco leaves, they can be reliably cut after compaction, fundamentally solving the problem of traditional rotary cutters being sensitive to material direction, and adapting to fully automated frame-flipping. Simultaneously, this invention can directly replace multiple leaf-laying and arranging workers, significantly reducing labor costs and labor intensity, fundamentally addressing the issue. This technology fundamentally solves the problems of chaotic personnel management, prominent safety hazards, and difficulty in recruiting workers at this workstation. In terms of cutting quality, the material is cut by the oscillating cutter while under compaction, resulting in a clean cut without the stringing or continuous cutting phenomena found in traditional methods. The cutting length accuracy is high, laying a good foundation for the homogenization of subsequent processes. In addition, the independent control of multiple cutters allows for flexible switching between different cutting modes to meet the requirements of different product formulas for leaf length. The whole frame of tobacco leaves does not need to undergo multiple pre-treatment processes such as loosening, spreading, and homogenizing, realizing an integrated production process of whole frame feeding, whole frame cutting, and whole frame output. The equipment has a small footprint, low energy consumption, and high production efficiency. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the cutting system for whole-frame tobacco leaves in Embodiment 1 of the present invention.

[0021] Figure 2 This is a schematic diagram of the cutting device in Embodiment 1 of the present invention.

[0022] Figure 3 This is a schematic diagram of the smoke-pressing device in Embodiment 1 of the present invention.

[0023] Figure 4 This is a schematic diagram of the smoke-blocking device in Embodiment 1 of the present invention.

[0024] Figure 5 This is a flowchart of a method for cutting whole frames of tobacco leaves according to the present invention.

[0025] In the diagram: 1. Base, 2. Conveying unit, 3. Smoke suppressing device, 31. Third drive unit, 32. Pressure plate, 4. Cutting device, 41. Cutting blade, 42. Pressing mechanism, 43. Swinging mechanism, 431. Second drive unit, 432. Transmission unit, 44. First drive unit, 5. Smoke blocking device, 51. Fourth drive unit, 52. Baffle, 6. Residual material recovery device. Detailed Implementation

[0026] To make the objectives, technical solutions, and technical effects of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings, multiple embodiments, and comparative examples. In the following description, the same components are referred to by the same reference numerals.

[0027] Example 1 like Figures 1-4 As shown, the present invention provides a cutting system for whole-frame tobacco leaves, including a base 1, a conveying unit 2, a tobacco pressing device 3, a cutting device 4, a tobacco blocking device 5, a control unit (not shown in the figure), and a waste material recovery device 6, wherein: The base 1 is equipped with a cutting station for cutting the whole frame of tobacco leaves. The base 1 provides a supporting foundation for the entire cutting system and can be a steel frame structure.

[0028] The conveying unit 2 is mounted on the base 1 and is used to feed whole frames of tobacco leaves into and out of the cutting station. In this embodiment, the conveying unit 2 is a conveyor belt conveyor, which is located at the bottom of the base 1 and extends horizontally.

[0029] The tobacco pressing device 3 is mounted on the base 1 and located above the cutting station. It is used to compact the tobacco leaves at the cutting station. Specifically, the tobacco pressing device 3 includes a third drive unit 31 and multiple pressing plates 32 disposed at the output end of the third drive unit 31. The third drive unit 31 can be a cylinder, hydraulic cylinder, or electric push rod. The multiple pressing plates 32 are synchronously raised and lowered under the drive of the third drive unit 31. Preferably, there are three pressing plates 32, each corresponding to the placement position of three tobacco leaves in the tobacco frame. The lower surface of the pressing plate 32 is flat, used to compact and tighten the loose tobacco leaves from above, forming tobacco leaf blocks with uniform density. Preferably, an elastic pad (not shown in the figure) is connected to the lower surface of each pressing plate 32. The elastic pad can be a rubber pad or a polyurethane pad to avoid damaging the tobacco leaves. The downward pressure of the pressing plate 32 is 0.1-0.5 MPa, preferably 0.2-0.3 MPa.

[0030] In this embodiment, due to the special nature of tobacco processing, pollution cannot be generated during the processing. Therefore, in this embodiment, the third drive unit 31 is selected as a cylinder.

[0031] The cutting device 4 is mounted on the base 1 and located above the cutting station, and is arranged in parallel with the tobacco pressing device 3. The cutting device 4 includes a cutting blade 41, a pressing mechanism 42 and a swinging mechanism 43. The pressing mechanism 42 is used to drive the cutting blade 41 to move up and down and control the depth of the cutting blade 41 into the tobacco leaf. The swinging mechanism 43 is used to drive the cutting blade 41 to swing back and forth in the horizontal plane to realize the cutting action.

[0032] In this embodiment, the reciprocating motion frequency of the cutter 41 is set to 10-60 times / minute, and the reciprocating motion stroke is set to 50-200mm; preferably, the reciprocating motion frequency is set to 20-40 times / minute, and the reciprocating motion stroke is set to 80-150mm. The above motion parameters can be adjusted according to the type, thickness, and fiber toughness of the tobacco leaves.

[0033] In this embodiment, the blade of the cutter 41 is a straight cutting edge with a cutting edge length of 500-1500mm, preferably 800-1200mm, to accommodate the width of cigarette frames of different specifications.

[0034] like Figure 2 As shown, the swing mechanism 43 includes a second drive unit 431 and a transmission unit 432. The second drive unit 431 and the cutter 41 are connected through the transmission unit 432. The transmission unit 432 converts the linear motion of the second drive unit 431 into the reciprocating swing of the corresponding cutter 41 in the horizontal plane.

[0035] In this embodiment, the second drive unit 431 is a cylinder, and the transmission unit 432 can be a crank-connecting rod mechanism or a lead screw transmission mechanism. The blade of the cutter 41 faces downward, and its length direction is perpendicular to the conveying direction of the conveying unit 2.

[0036] In this embodiment, the cutting device 4 includes at least two cutting blades 41 and a first driving unit 44 that is matched and independent of each other with the cutting blades 41. Each first driving unit 44 is connected to the corresponding cutting blade 41 and is used to independently control the corresponding cutting blade 41 to cut the tobacco leaves at the cutting station. The first driving unit 44 is a cylinder.

[0037] Preferably, the system is equipped with three independent cutters 41, namely the first cutter, the second cutter, and the third cutter. The installation positions of the three cutters 41 correspond one-to-one with the placement positions of the three tobacco leaves in the tobacco frame. Each cutter 41 can be independently controlled to lift, lower, and swing through the corresponding first drive unit 44. Specifically, the first cutter corresponds to the left tobacco leaf area, the second cutter corresponds to the middle tobacco leaf area, and the third cutter corresponds to the right tobacco leaf area.

[0038] The smoke blocking device 5 is vertically mounted on the base 1 and located at the input end of the cutting station. It is used to prevent the cut tobacco leaves from tilting to the input end of the cutting station. Specifically, the smoke blocking device 5 includes a fourth drive unit 51 and a baffle 52. The fourth drive unit 51 is mounted on the base 1, and the baffle 52 is mounted at the output end of the fourth drive unit 51. The baffle 52 is driven to move up and down by the fourth drive unit 51 to block the cut tobacco leaves at the cutting station.

[0039] In this embodiment, the fourth drive unit 51 is a cylinder.

[0040] The control unit is connected to the conveying unit 2, the smoke suppressing device 3 and the cutting device 4 respectively, and is used to control the coordinated operation of the conveying unit 2, the smoke suppressing device 3 and the cutting device 4. At the same time, the control unit is also connected to the smoke blocking device 5 and the residual material recovery device 6 respectively.

[0041] In this embodiment, the control unit can be a programmable logic controller (PLC) or an industrial computer, which controls the timing of each actuator according to preset process parameters (such as cutting mode, cutting length, etc.).

[0042] In this embodiment, the waste material recovery device 6 is installed on the base 1 and located below the cutting station. It is used to collect and transport the scrap generated during the cutting process. Specifically, the waste material recovery device 6 includes a recovery hopper and a conveyor belt. The recovery hopper is located below the cutting station, and its top opening faces the cutting station. It is used to collect the scrap generated during the cutting process. The input end of the conveyor belt is connected to the output end of the recovery hopper, and the output end of the conveyor belt is connected to the input end of the next process. It is used to transport the scrap collected by the recovery hopper to the next process.

[0043] Example 2 like Figure 5 As shown, the present invention also provides a method for cutting a whole frame of tobacco leaves based on a cutting system for whole frames of tobacco leaves, the method specifically including the following steps: Step S100, Feeding and Positioning When the conveying unit 2 is started, it sends the tobacco frame containing the whole frame of tobacco leaves (or directly sends the whole frame of tobacco leaves) into the cutting station along the conveying direction. When the tobacco frame or tobacco leaves reach the preset cutting position, the conveying unit 2 stops running and the material is left to stand still in the cutting station. The arrival detection can be achieved by an external photoelectric sensor or position sensor, and the sensor is electrically connected to the control unit.

[0044] Step S200, material blocking and clamping The control unit controls the fourth drive unit 51 to start, and the drive baffle 52 moves downward (or rises from the initial position) to form a blockage on one side of the tobacco leaf feeding direction to prevent the cut tobacco leaf from tilting and sliding out in the feeding direction; Subsequently, the control unit controls the third drive unit 31 to start, driving multiple pressure plates 32 to move downwards synchronously, compacting and pressing the loose tobacco leaves from above. The pressure plates 32 stop after pressing down to a preset height. At this time, the entire frame of tobacco leaves forms a stable block of tobacco leaves to be cut under the joint constraint of the bottom conveying unit, the top pressure plate, and the rear baffle. The downward pressure of the pressure plates 32 can be adjusted according to the type and thickness of the tobacco leaves to ensure that the tobacco leaves are compacted but not crushed.

[0045] Step S300, Swing Cutting According to the preset cutting mode, the control unit selects to start the corresponding cutter 41. The control unit controls the pressing mechanism 42 to drive the selected cutter 41 to move downward, so that the blade completely penetrates the tobacco leaf layer and the blade edge contacts the bottom cutting surface (i.e. the upper surface of the conveying unit 2 or the cutting plate set on the conveying unit 2). After the cutter is pressed down into place, the control unit controls the swing mechanism 43 to start. The second drive unit 431 drives the cutter 41 to swing up and down in the vertical horizontal plane through the transmission unit 432. The reciprocating motion direction of the cutter 41 is perpendicular to the conveying direction of the conveying unit 2, that is, along the width direction of the tobacco leaf block. The cutter 41 continuously cuts the tobacco leaf fiber in the reciprocating motion, just like the action of "stabbing" with a kitchen knife, completely cutting the tobacco leaf fiber.

[0046] The reciprocating motion of the cutter 41 continues across the entire width of the tobacco block until all tobacco leaves at the corresponding position are cut. After cutting, the swing mechanism 43 stops moving, and the pressing mechanism 42 drives the cutter 41 to lift up and reset.

[0047] When the system has multiple independent cutters, the control unit can select different cutting modes according to the length requirements set in the process. For example, in the one-cut two-segment mode, only the middle cutter is activated for cutting; in the two-cut three-segment mode, the two cutters are activated sequentially for cutting. The independent control of multiple cutters allows the system to flexibly adapt to different cutting length requirements. The selection of cutters and the cutting sequence are automatically executed by the control unit according to preset process parameters.

[0048] Step S400, Reset and Discharge After the cutting is completed, the control unit controls the pressing mechanism 42 to drive the cutter 41 to lift up and reset, and controls the third drive unit 31 to drive the pressure plate 32 to lift up and reset. Then, the control unit controls the conveying unit 2 to restart and convey the cut tobacco leaves to the next process. Finally, the control unit controls the fourth drive unit 51 to drive the baffle 52 to move up and reset, in preparation for the cutting of the next batch of tobacco leaves.

[0049] The small amount of fragments and debris generated during the cutting process are collected through a recycling hopper and transported to the next process along with the materials conveyed by the conveyor belt and conveying unit, keeping the workstation clean.

[0050] In summary, this invention can be widely applied to the material preparation stage of tobacco processing production lines, and is particularly suitable for automated production scenarios that require direct cutting of entire frames of tobacco leaves. This invention can directly process the tobacco leaf material flow from the flipped frames without manual handling, achieving overall, effective, and thorough fixed-length cutting of the entire frame of tobacco leaves, and has significant industrial application value.

[0051] The foregoing has provided a detailed description of a cutting system and method for whole-frame tobacco leaves provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application; the descriptions of the embodiments above are merely for the purpose of helping to understand the core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A cutting system for whole frames of tobacco leaves, characterized in that, include: The base has a cutting station for cutting the entire frame of tobacco leaves; The conveying unit, mounted on the base, is used to feed whole frames of tobacco leaves into and out of the cutting station; The tobacco pressing device is installed on the base and located above the cutting station to compact the tobacco leaves at the cutting station; The cutting device is set on the base and located above the cutting station, and is arranged in parallel with the smoke suppressing device. The cutting device includes a cutting blade, a pressing mechanism and a swinging mechanism. The pressing mechanism is used to drive the cutting blade to move up and down, and the swinging mechanism is used to drive the cutting blade to swing back and forth in the horizontal plane. The control unit is connected to the conveying unit, the smoke suppressing device, and the cutting device respectively, and is used to control the coordinated operation of the conveying unit, the smoke suppressing device, and the cutting device.

2. The cutting system for whole-frame tobacco leaves according to claim 1, characterized in that, The base may also be equipped with a smoke-blocking device located at the input end of the cutting station, which is used to prevent the cut tobacco leaves from falling to the input end.

3. The cutting system for whole-frame tobacco leaves according to claim 2, characterized in that, The cutting device includes at least two cutting blades and a first driving unit that is matched and independent of each cutting blade. Each first driving unit is connected to the corresponding cutting blade to independently control the corresponding cutting blade to cut the tobacco leaves at the cutting station.

4. The cutting system for whole-frame tobacco leaves according to claim 3, characterized in that, The swing mechanism includes a second drive unit and a transmission unit. The second drive unit and the cutter are connected through the transmission unit, which converts the motion of the second drive unit into the reciprocating swing of the corresponding cutter in the horizontal plane.

5. The cutting system for whole-frame tobacco leaves according to claim 2, characterized in that, The tobacco pressing device includes a third drive unit and multiple pressure plates disposed at the output end of the third drive unit, with the multiple pressure plates corresponding to the placement positions of different tobacco leaves in the tobacco frame.

6. The cutting system for whole-frame tobacco leaves according to claim 5, characterized in that, Each of the pressure plates has an elastic pad layer attached to its lower surface.

7. The cutting system for whole-frame tobacco leaves according to claim 2, characterized in that, The smoke-blocking device includes a fourth drive unit and a baffle. The fourth drive unit is mounted on the base, and the baffle is mounted on the output end of the fourth drive unit. The baffle is driven to move up and down by the fourth drive unit to block the tobacco leaves at the cutting station during the cutting process.

8. The cutting system for whole-frame tobacco leaves according to claim 2, characterized in that, It also includes a scrap recovery device installed on the base and located below the cutting station, used to collect and transport scrap generated during the cutting process.

9. The cutting system for whole-frame tobacco leaves according to claim 8, characterized in that, The waste material recycling device includes a recycling hopper and a conveyor belt. The recycling hopper is located below the cutting station and is used to collect the scrap generated during the cutting process. The input end of the conveyor belt is connected to the output end of the recycling hopper, and the output end of the conveyor belt is connected to the input end of the next process, so as to transport the scrap collected by the recycling hopper to the next process.

10. A method for cutting tobacco leaves using the cutting system for whole-frame tobacco leaves according to any one of claims 1 to 9, characterized in that, Includes the following steps: S100. After the whole frame of tobacco leaves is conveyed to the cutting station by the conveying unit, the conveying is stopped, and the tobacco leaves are left to stand still in the cutting station. S200: The tobacco leaves in the frame are compacted and fixed from above by the tobacco pressing device, so that the tobacco leaves in the frame are formed into stable tobacco leaf blocks; at the same time, the drive baffle moves downward to prevent the tobacco leaf blocks on the cutting station from tipping over. S300, the cutting device drives the cutter to move downward to the tobacco leaf block to cut it, and then drives the cutter to swing back and forth in the horizontal plane to cut the tobacco leaf block. S400: The cut tobacco leaves are conveyed out of the cutting station by the conveying unit, and then the baffle is driven to move upward.

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