A device and method for cutting tobacco strips according to the diameter of tobacco stems

Abstract

The application discloses a device and method for cutting tobacco strips according to tobacco stem diameters, and the device comprises: a tobacco conveying device, which is provided with a cutting and sweeping integrated device on the top, the cutting and sweeping integrated device is used for cutting and sweeping the tobacco leaves on the tobacco conveying device, the tobacco conveying device is connected with a tobacco strip conveying device through a tobacco strip descending channel, the position of the cutting and sweeping integrated device corresponds to that of the tobacco strip descending channel, a plurality of tobacco strip collecting frames are arranged on the tobacco strip conveying device, and the tobacco strip descending channel is used for transmitting the cut tobacco strips to the tobacco strip collecting frames in a classified manner. The device and method for cutting tobacco strips according to tobacco stem diameters can accurately cut the tobacco strips according to the tobacco stem diameters in the tobacco strip production process through the cutting and sweeping integrated device, the distribution range of the tobacco stem diameters can be effectively controlled, and therefore, the high-standard requirements of industrial production can be met; the cut tobacco strips can fall into different collecting boxes for classification, and the tobacco strips containing specific tobacco stem diameters can be conveniently processed.

Description

Technical Field

[0001] This invention relates to the field of cigarette production equipment technology, and more specifically, to an apparatus and method for cutting tobacco leaves according to the diameter of the tobacco stem. Background Technology

[0002] Tobacco leaves are an indispensable raw material in cigarette manufacturing, and their quality directly affects the final quality of cigarettes. In the cigarette production process, the treatment of tobacco stems has a crucial impact on the quality of tobacco leaves. The stems are the main supporting part of the tobacco leaves, and their diameter not only affects the structural integrity of the leaves but also significantly impacts the effectiveness of the threshing and re-drying process. The threshing and re-drying process is a key step in cigarette production, aiming to make the physical properties of the tobacco leaves more uniform by breaking up the leaves and stems and removing excess moisture, thereby improving the taste and combustibility of the cigarettes. However, currently, the diameter of tobacco stems in tobacco leaves varies considerably, directly making it difficult to control the stem content index after the threshing and re-drying process. The larger the stem diameter, the worse the physical treatment effect during the threshing and re-drying process, making it difficult to effectively remove or break up large-diameter stems. This not only affects the stability of the stem content index but may also lead to the tobacco leaves being difficult to process in subsequent processing due to excessively thick stems, ultimately affecting the appearance and quality of the finished cigarettes.

[0003] Currently, the production of sheet cigarettes mainly involves simple head and tail removal from raw tobacco. While this method can reduce excessively long or short stems to some extent, the significant differences in stem diameter within the sheet cigarettes lead to large fluctuations in the stem content of the leaves after threshing. This uncontrollability directly affects the production efficiency and quality stability of subsequent cigarette products, increases the puncture rate of finished cigarettes, and severely restricts the industrialization requirements of cigarette production.

[0004] Therefore, there is an urgent need for a device and method for cutting tobacco leaves according to the diameter of the tobacco stem. Summary of the Invention

[0005] The purpose of this invention is to provide an apparatus and method for slicing tobacco leaves according to the diameter of the tobacco stems, so as to solve the problems in the prior art. When the raw tobacco is delivered, the diameter of the tobacco stems in the raw tobacco can be automatically identified and the tobacco leaves can be automatically sliced ​​according to the diameter. The sliced ​​tobacco leaves can fall into different collection boxes for classification, which facilitates the processing of tobacco leaves containing specific tobacco stem diameters.

[0006] This invention provides an apparatus for slicing tobacco leaves according to the diameter of the tobacco stem, comprising: a tobacco leaf conveying device for conveying tobacco leaves; a cutting and sweeping integrated device disposed above the tobacco leaf conveying device for slicing and sweeping the tobacco leaves on the tobacco leaf conveying device; the tobacco leaf conveying device being connected to the tobacco leaf conveying device via a tobacco leaf sliding channel, and the cutting and sweeping integrated device corresponding to the position of the tobacco leaf sliding channel; multiple tobacco leaf collection frames disposed on the tobacco leaf conveying device; and the tobacco leaf sliding channel for classifying and transferring the sliced ​​tobacco leaves to the tobacco leaf collection frames.

[0007] In the device for cutting tobacco leaves according to the diameter of the stem as described above, preferably, the tobacco leaves are laid flat above the tobacco leaf conveying device; the downward channel has an inclination angle of 30°. o -60 o The number of tobacco leaf collection frames is consistent with the number of tobacco leaf segments.

[0008] As described above, in the device for cutting tobacco leaves according to the diameter of the tobacco stem, preferably, the tobacco leaf conveying device includes a height-adjustable first support frame, on which a belt is provided, and the operating speed of the tobacco leaf conveying device, the cutting and sweeping speed of the integrated cutting and sweeping device, and the operating speed of the tobacco leaf conveying device are matched.

[0009] As described above, in the device for cutting tobacco leaves according to the diameter of the tobacco stem, preferably, the tobacco leaf conveying device includes a drive chain, and a leaf support plate is provided on the outer side of the drive chain in a vertical direction. The leaf support plate is fixed to the drive chain by fixing clamps, which are arranged on the outer sides of both ends of the drive chain in a vertical direction. The fixing clamps have a U-shaped structure to fix the drive chain and the leaf support plate as a whole. The leaf support plate has multiple grooves with equal spacing. Protective plates are provided on both sides of the tobacco leaf conveying device.

[0010] As described above, the device for cutting tobacco leaves according to the diameter of the tobacco stems preferably includes an integrated cutting and sweeping worktable. The worktable is equipped with a tobacco leaf cleaning device and a tobacco leaf cutting device. The worktable is fixed above the tobacco leaf conveying device by four legs. Side plates are vertically mounted on the tops of two opposing legs. Each side plate is fixed to its corresponding leg by a fixing block. Each leg is telescopic to adjust the height of the worktable. Two side plates are connected by two fixed shafts, and a cutting and sweeping drive belt and a first sliding shaft are positioned between the two side plates.

[0011] As described above, in the device for cutting tobacco leaves according to the diameter of the stem, preferably, the tobacco leaf cleaning device is located to the left of the tobacco leaf cutting device. The tobacco leaf cleaning device is fixed by a second support frame. Two first sliding bushings are symmetrically arranged on the lower surface of the upper fixed plate of the second support frame, and the two first sliding bushings are symmetrically distributed along the cutting and sweeping transmission belt. The first sliding bushings are positioned in conjunction with the first sliding shaft. A first drive motor is provided on the upper surface of the upper fixed plate of the second support frame. The cutting and sweeping transmission belt is located below the second support frame and connected to the first drive motor. The first drive motor cooperates with the cutting and sweeping transmission belt to achieve belt drive. The cutting and sweeping transmission belt can reciprocate left and right along the first sliding shaft. A second locking device is provided on the second support frame at a position corresponding to the cutting and sweeping transmission belt. The first support frame has a first telescopic cylinder at the center of the upper surface of the lower fixed plate of the second support frame. A first fixed frame is threadedly connected to the lower part of the first telescopic cylinder. Second sliding shafts are threadedly connected to the upper sides of the first fixed frame. The first telescopic cylinder is used to drive the first fixed frame to move up and down in the vertical direction. A cleaning plate is detachably connected to the lower part of the first fixed frame, and the cleaning plate adopts a soft bristle structure. A first fixed bracket is provided on the upper right side of the second support frame. A first camera is fixedly connected to the other end of the first fixed bracket. The first camera is used to determine the relative position of the first camera with the tobacco leaf conveying device and the cut tobacco leaves in real time through a visual recognition system, and feeds back to the first drive motor to control the tobacco leaf cleaning device to move back and forth left and right to achieve the cleaning of the cut tobacco leaves.

[0012] As described above, in the device for cutting tobacco leaves according to the diameter of the stem, preferably, the tobacco leaf cutting device is located on the right side of the integrated cutting and sweeping workbench. The tobacco leaf cutting device includes a third support frame. Two second sliding bushings are symmetrically arranged along the lower surface of the upper end of the third support frame, and the two second sliding bushings are symmetrically distributed along the cutting and sweeping transmission belt. The second sliding bushings are fixed to the lower surface of the upper fixing plate of the third support frame, and are positioned in conjunction with the first sliding shaft. A second drive motor is provided on the upper surface of the upper fixing plate of the third support frame. The second drive motor and the cutting and sweeping transmission belt are driven by a gear belt. The cutting and sweeping transmission belt can reciprocate left and right along the first sliding shaft. A third locking device is provided on the third support frame at a position corresponding to the cutting and sweeping transmission belt for tensioning the cutting and sweeping transmission belt. A second telescopic cylinder is located at the center of the upper surface of the lower fixed plate. A second fixed frame is threadedly connected below the second telescopic cylinder. A third sliding shaft is threadedly connected to both sides of the upper part of the second fixed frame. The second telescopic cylinder is used to drive the second fixed frame to move up and down in the vertical direction. A cutter is detachably connected below the second fixed frame. Laser positioning transmitters are symmetrically arranged on both sides of the second fixed frame to monitor the position of the groove between the cutter and the leaf support plate in real time. A second fixed bracket is located on the upper right side of the third support frame. A second camera is located at the other end of the second fixed bracket. The second camera is used to determine the relative position of the second camera with the tobacco leaf conveying device and the tobacco leaf to be cut in real time through a visual recognition system, and feeds back to the second drive motor to control the reciprocating movement of the tobacco leaf cutting device to achieve the cutting of the tobacco leaf.

[0013] The present invention also provides a method for cutting tobacco leaves according to the diameter of the tobacco stem using the above-described device, comprising the following steps:

[0014] The tobacco leaves to be cut are laid flat on the tobacco leaf conveying device so that the tobacco leaf conveying device can move the tobacco leaves forward.

[0015] When the tobacco leaves move to the bottom of the integrated cutting and sweeping device, the integrated cutting and sweeping device is used to cut the tobacco leaves into sections and to clean the cut tobacco leaves.

[0016] After being cut, the tobacco leaves enter the tobacco leaf sliding channel and automatically slide down into the tobacco leaf collection box by gravity, completing the classification and collection of tobacco leaves of the current stem diameter.

[0017] Once the integrated cutting and sweeping device resets, the tobacco leaf conveying device moves the next tobacco leaf collection frame forward to the tobacco sliding channel position, repeating the steps of segmented cutting, sweeping, and sorting collection of tobacco leaves to complete the cutting of the next size of tobacco leaves until all tobacco leaves are cut according to the preset tobacco stem diameter.

[0018] The method for cutting tobacco leaves according to the diameter of the stem, as described above, preferably includes the following step: laying the tobacco leaves to be cut flat on the tobacco leaf conveying device so that the tobacco leaf conveying device moves the tobacco leaves forward.

[0019] The tobacco leaves to be cut are laid flat above the leaf support plate of the tobacco leaf conveying device, centered, and driven by the drive chain, the tobacco leaves move forward along the leaf support plate.

[0020] When the tobacco leaves move to the underside of the integrated cutting and sweeping device, the device is used to cut the tobacco leaves into sections and clean the cut tobacco leaves, specifically including:

[0021] The second camera installed on the tobacco cutting device automatically scans the outline of the tobacco leaf and the diameter of the tobacco stem. The cutting thickness is determined according to the preset diameter. When the diameter of the tobacco stem in the tobacco leaf to be cut is reached, the drive device of the tobacco leaf conveying device is controlled to stop the tobacco leaf at the preset position.

[0022] The laser positioning transmitter installed on the cutting and sweeping integrated device sends a signal to determine whether the tobacco leaf is in the middle groove of the leaf support plate. If it is not in the groove, the drive device of the tobacco leaf conveying device is controlled to make fine adjustments to ensure that the cutter can pass through the groove of the leaf support plate when cutting the tobacco leaf.

[0023] The second telescopic cylinder moves to control the cutter to move downwards, completing the segmented cutting of the tobacco leaves;

[0024] After the cutting is completed, the second telescopic cylinder retracts, the second drive motor drives the tobacco cutting device to move to the right as a whole, and the first drive motor drives the tobacco cleaning device to move to the right as a whole in sync, reaching directly above the cut tobacco leaves. The first camera then determines whether the tobacco cleaning device is in place.

[0025] If the tobacco scraping device is not in position, it moves to a preset position under the action of the first telescopic cylinder, and is driven to move to the left by the first transmission motor. The cleaning of the cut tobacco scraps is completed by the sweeping plate.

[0026] The method for cutting tobacco flakes according to the diameter of the tobacco stem, as described above, preferably involves the cut tobacco flakes entering a tobacco flake sliding channel and automatically sliding down into a tobacco flake collection frame by gravity, thus completing the classification and collection of tobacco flakes according to the current tobacco stem diameter. Specifically, this includes:

[0027] After being cut, the tobacco leaves are moved into the tobacco leaf sliding channel by the sweeping plate, and automatically slide into the tobacco leaf collection box by gravity, completing the classification and collection of tobacco leaves of the current stem diameter.

[0028] This invention provides an apparatus and method for slicing tobacco leaves according to the diameter of the tobacco stems. During the tobacco leaf production process, the integrated cutting and sweeping device can accurately slice the tobacco leaves according to the diameter of the tobacco stems, effectively controlling the distribution range of the tobacco stem diameter, thereby meeting the high standards of industrial production, improving the effect of leaf threshing and re-drying process, reducing the stem content index in the leaves, and improving the quality of finished cigarettes. After slicing, the tobacco leaves can fall into different collection boxes for classification, which facilitates the processing of tobacco leaves containing specific tobacco stem diameters. Attached Figure Description

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described below with reference to the accompanying drawings, wherein:

[0030] Figure 1 A three-dimensional structural schematic diagram of the device for cutting tobacco leaves according to the diameter of the tobacco stem provided by the present invention;

[0031] Figure 2 This is a top view of the device for cutting tobacco leaves according to the diameter of the tobacco stem provided by the present invention;

[0032] Figure 3 This is a schematic diagram of the leaf support plate device of the tobacco leaf cutting device based on the diameter of the tobacco stem provided by the present invention;

[0033] Figure 4 This is a schematic diagram of the integrated cutting and sweeping device of the tobacco slicing apparatus based on the diameter of the tobacco stem provided by the present invention;

[0034] Figure 5 This is a top view of the tobacco cleaning device of the device for cutting tobacco leaves according to the diameter of the tobacco stem provided by the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the tobacco cleaning device of the device for cutting tobacco leaves according to the diameter of the tobacco stem provided by the present invention;

[0036] Figure 7 This is a schematic diagram of the tobacco leaf cutting device of the device for cutting tobacco leaves according to the diameter of the tobacco stem provided by the present invention;

[0037] Figure 8 This is a flowchart illustrating an embodiment of the method for cutting tobacco leaves according to the diameter of the tobacco stem provided by the present invention.

[0038] Explanation of reference numerals in the attached drawings: 1-Tobacco leaf conveying device, 2-Tobacco leaf conveying device, 3-Tobacco leaf, 4-Cut and sweep integrated device, 5-Tobacco leaf downward channel, 6-Tobacco leaf collection frame, 11-First support frame, 21-Drive chain, 22-Leaf support plate, 23-Fixed clamping plate, 24-Guard plate, 41-Cut and sweep integrated worktable, 42-Tobacco leaf cleaning device, 43-Tobacco leaf cutting device, 411-Outrigger, 412-Fixed block, 413-Side plate, 414-Fixed shaft, 415-First sliding shaft, 416-Cut and sweep transmission belt, 421-Second support frame, 422-First sliding bushing, 4 23-First drive motor, 424-Second locking device, 425-First telescopic cylinder, 426-Second sliding shaft, 427-First fixed frame, 428-Sweeping plate, 429-First fixed bracket, 4210-First camera, 431-Third support frame, 432-Second sliding bushing, 433-Second drive motor, 434-Second locking device, 435-Second telescopic cylinder, 436-Third sliding shaft, 437-Second fixed frame, 438-Laser positioning transmitter, 439-Cutter, 4310-Second fixed bracket, 4311-Second camera. Detailed Implementation

[0039] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0040] The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Terms such as “including” or “contains” mean that the element preceding the term encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as “above” and “below” are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0041] In this disclosure, when a specific component is described as being located between a first component and a second component, an intermediary component may or may not be present between the specific component and the first or second component. When a specific component is described as connecting to other components, the specific component may be directly connected to the other components without having an intermediary component, or it may not be directly connected to the other components but may have an intermediary component.

[0042] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0043] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0044] like Figures 1-7 As shown, the device for slicing tobacco leaves according to the diameter of the tobacco stem provided in this embodiment includes: a tobacco leaf conveying device 2 for conveying tobacco leaves 3, a cutting and sweeping integrated device 4 disposed above the tobacco leaf conveying device 2, the cutting and sweeping integrated device 4 being used to slice and sweep the tobacco leaves on the tobacco leaf conveying device 2, the tobacco leaf conveying device 2 being connected to the tobacco leaf conveying device 1 through a tobacco leaf sliding channel 5, and the cutting and sweeping integrated device 4 being positioned corresponding to the tobacco leaf sliding channel 5, the tobacco leaf conveying device 1 being provided with multiple tobacco leaf collection frames 6, and the tobacco leaf sliding channel 5 being used to classify and transfer the sliced ​​tobacco leaves to the tobacco leaf collection frames 6.

[0045] The tobacco leaves 3 are laid flat above the tobacco leaf conveying device 2; the downward channel 5 has an inclination angle of 30°. o -60 o The number of tobacco leaf collection frames 6 is consistent with the number of tobacco leaf segments. It should be noted that the present invention does not specifically limit the inclination angle of the sliding channel 5, and the inclination angle of the sliding channel 5 is adjustable.

[0046] Furthermore, the tobacco leaf conveying device 1 adopts belt conveying. Specifically, the tobacco leaf conveying device 1 includes a height-adjustable first support frame 11 to adjust the height of the tobacco leaf conveying device 1. A belt is provided on the first support frame 11. The operating speed of the tobacco leaf conveying device 1, the cutting and sweeping speed of the integrated cutting and sweeping device 4, and the operating speed of the tobacco leaf conveying device 2 are matched and adjusted by the control system.

[0047] Furthermore, the tobacco leaf conveying device 2 adopts chain drive. Specifically, the tobacco leaf conveying device 2 includes a drive chain 21, and a leaf support plate 22 is arranged vertically on the outer side of the drive chain 21. The leaf support plate 22 is fixed to the drive chain 21 by a fixing clamp 23. The fixing clamp 23 is arranged vertically on the outer side of both ends of the drive chain 21, and the fixing clamp 23 adopts a U-shaped structure to fix the drive chain 21 and the leaf support plate 22 into one piece. The leaf support plate 22 has multiple grooves with equal spacing. The tobacco leaf conveying device 2 is provided with guard plates 24 on both sides. The length and height of the guard plates 24 are adjustable to prevent the tobacco leaves 3 from falling during the conveying process.

[0048] Furthermore, the integrated cutting and sweeping device 4 includes an integrated cutting and sweeping worktable 41, on which a tobacco leaf cleaning device 42 and a tobacco leaf cutting device 43 are mounted. The integrated cutting and sweeping worktable 41 is fixed above the tobacco leaf conveying device 2 by four legs 411. Side plates 413 are vertically mounted on the tops of two opposing legs 411. Each side plate 413 is fixed to its corresponding leg 411 by a fixing block 412. Each leg 411 has a telescopic structure for adjusting the height of the integrated cutting and sweeping worktable 41. Two side plates 413 are connected by two fixed shafts 414, and a cutting and sweeping transmission belt 416 and a first sliding shaft 415 are disposed between the two side plates 413. The two side plates 413 are fixedly connected to the fixed shafts 414, the first sliding shaft 415, and the cutting and sweeping transmission belt 416 to support the entire integrated cutting and sweeping worktable 41.

[0049] Furthermore, the tobacco leaf cleaning device 42 is located to the left of the tobacco leaf cutting device 43. The tobacco leaf cleaning device 42 is fixed by a second support frame 421. Two first sliding bushings 422 are symmetrically arranged on the lower surface of the upper fixed plate of the second support frame 421, and the two first sliding bushings 422 are symmetrically distributed along the cutting and sweeping transmission belt 416. The first sliding bushings 422 are positioned in conjunction with the first sliding shaft 415. A first transmission motor 423 is provided on the upper surface of the upper fixed plate of the second support frame 421. The cutting and sweeping transmission belt 416 is located below the second support frame 421 and is connected to the first transmission motor 423. The first transmission motor 423 cooperates with the cutting and sweeping transmission belt 416 to realize belt drive. The cutting and sweeping transmission belt 416 can move back and forth along the first sliding shaft 415. A second locking device 424 is provided on the second support frame 421 at a position corresponding to the cutting and sweeping transmission belt 416 to tension the cutting and sweeping transmission belt 416 and ensure belt drive efficiency. The second support frame 421 has a first telescopic cylinder 425 located at the center of the upper surface of the lower fixed plate. A first fixed frame 427 is threadedly connected below the first telescopic cylinder 425. A second sliding shaft 426 is threadedly connected to both sides of the upper part of the first fixed frame 427. The first telescopic cylinder 425 is used to drive the first fixed frame 427 to move up and down in the vertical direction. A cleaning plate 428 is detachably connected to the lower part of the first fixed frame 427. The cleaning plate 428 adopts a soft bristle structure to avoid rigid collision with the leaf support plate 22. A first fixed bracket 429 is located on the upper right side of the second support frame 421. A first camera 4210 is fixedly connected to the other end of the first fixed bracket 429. The first camera 4210 is used to determine the relative position of the first camera 4210 with the tobacco leaf conveying device 2 and the cut tobacco leaves in real time through a visual recognition system, and feeds back to the first drive motor 423 to control the tobacco leaf cleaning device 42 to move back and forth left and right to achieve the cleaning of the cut tobacco leaves.

[0050] Furthermore, the tobacco cutting device 43 is located on the right side of the integrated cutting and sweeping workbench 41. The tobacco cutting device 43 includes a third support frame 431 to fix the overall frame. Two second sliding bushings 432 are symmetrically arranged on the lower side of the upper end face of the third support frame 431, and the two second sliding bushings 432 are symmetrically distributed on the left and right sides along the cutting and sweeping transmission belt 416. The second sliding bushings 432 are fixed to the lower bottom surface of the upper fixing plate of the third support frame 431. The second sliding bushings 432 and the first sliding shaft 41 are connected. 5. A second drive motor 433 is mounted on the upper surface of the upper fixed plate of the third support frame 431. The second drive motor 433 engages with the cutting and sweeping drive belt 416 via a gear belt. The cutting and sweeping drive belt 416 can reciprocate left and right along the first sliding shaft 415. A third locking device 434 is mounted on the third support frame 431 at a position corresponding to the cutting and sweeping drive belt 416 to tension the cutting and sweeping drive belt 416 and ensure belt drive efficiency. The center of the upper surface of the lower fixed plate of the third support frame 431 is... A second telescopic cylinder 435 is provided, and a second fixed frame 437 is threadedly connected to the lower part of the second telescopic cylinder 435. Third sliding shafts 436 are threadedly connected to both sides of the upper part of the second fixed frame 437. The second telescopic cylinder 435 drives the second fixed frame 437 to move vertically up and down. A cutter 439 is detachably connected to the lower part of the second fixed frame 437. Laser positioning emitters 438 are symmetrically arranged on both sides of the second fixed frame 437. The laser positioning emitters 438 are used in pairs for real-time monitoring. The groove between the cutting blade 439 and the leaf support plate 22 is located. A second fixed bracket 4310 is provided on the upper right side of the third support frame 431. A second camera 4311 is provided at the other end of the second fixed bracket 4310. The second camera 4311 is used to determine the relative position of the second camera 4311 with the tobacco leaf conveying device 2 and the tobacco leaf to be cut 3 in real time through a visual recognition system, and feeds it back to the second drive motor 433 to control the reciprocating movement of the tobacco leaf cutting device 43 in the up, down, left, and right directions to realize the cutting of the tobacco leaf.

[0051] The device for slicing tobacco leaves according to the diameter of the tobacco stems provided in this invention can accurately slice tobacco leaves according to the diameter of the tobacco stems during the tobacco leaf production process through an integrated cutting and sweeping device. This effectively controls the distribution range of the tobacco stem diameter, thereby meeting the high standards of industrial production, improving the effect of leaf threshing and re-drying process, reducing the stem content index in the leaves, and improving the quality of finished cigarettes. After slicing, the tobacco leaves can fall into different collection boxes for classification, which facilitates the processing of tobacco leaves containing specific tobacco stem diameters.

[0052] like Figure 8As shown, the method for cutting tobacco leaves according to the diameter of the tobacco stem provided in this embodiment includes the following steps in actual implementation:

[0053] Step S1: Lay the tobacco leaves 3 to be cut flat on the tobacco leaf conveying device 2 so that the tobacco leaf conveying device 2 can move the tobacco leaves 3 forward.

[0054] Specifically, the tobacco leaves 3 to be cut are laid flat above the leaf support plate 22 of the tobacco leaf conveying device 2 and placed in the center. Driven by the drive chain 21, the tobacco leaves 3 move forward along the leaf support plate 22.

[0055] Step S2: When the tobacco leaf 3 moves to the bottom of the integrated cutting and sweeping device 4, the integrated cutting and sweeping device 4 is used to cut the tobacco leaf 3 into sections and to clean the cut tobacco leaves.

[0056] In one embodiment of the apparatus and method for cutting tobacco leaves according to the diameter of the tobacco stem according to the present invention, step S2 may specifically include:

[0057] Step S21: The second camera 4311 installed on the tobacco cutting device 43 automatically scans the outline of the tobacco leaf and the diameter of the tobacco stem. The cutting thickness is determined according to the set diameter. When the diameter of the tobacco stem in the tobacco leaf to be cut is reached, the drive device of the tobacco leaf conveying device 2 is controlled to stop the tobacco leaf 3 at the preset position.

[0058] Step S22: The laser positioning transmitter 438 installed on the cutting and sweeping integrated device 4 sends a signal to determine whether the tobacco leaf 3 is in the middle groove of the leaf support plate 22. If it is not in the groove, the drive device of the tobacco leaf conveying device 2 is controlled to make fine adjustments to ensure that the cutter 439 can pass through the groove of the leaf support plate 22 when cutting the tobacco leaf 3.

[0059] When the cutter 439 cuts the tobacco leaf 3, it can pass through the groove of the leaf support plate 22, thus avoiding blade breakage.

[0060] In step S23, the second telescopic cylinder 435 is activated, controlling the cutter 439 to move downward, completing the segmented cutting of the tobacco leaf 3.

[0061] Step S24: After the cutting is completed, the second telescopic cylinder 435 retracts, the second drive motor 433 drives the tobacco cutting device 43 to move to the right as a whole, and the first drive motor 423 drives the tobacco cleaning device 42 to move to the right in sync, reaching directly above the cut tobacco leaves, and the first camera 4210 determines whether the tobacco cleaning device 42 is in place.

[0062] Step S25: If the tobacco cleaning device 42 is not in position, the tobacco cleaning device 42 moves to a preset position under the action of the first telescopic cylinder 425, and is driven to move to the left by the first transmission motor 423. The cleaning of the cut tobacco is completed by the sweeping plate 428.

[0063] Step S3: After being cut, the tobacco leaves enter the tobacco leaf sliding channel 5 and automatically slide down into the tobacco leaf collection box 6 by gravity, completing the classification and collection of tobacco leaves of the current stem diameter.

[0064] Specifically, the cut tobacco leaves are moved into the tobacco leaf sliding channel 5 by the sweeping plate 428, and automatically slide into the tobacco leaf collection frame 6 by gravity, thus completing the classification and collection of tobacco leaves of the current stem diameter.

[0065] Step S4: The integrated cutting and sweeping device 4 is reset, and the tobacco leaf conveying device 1 moves the next tobacco leaf collection frame 6 forward to the tobacco sliding channel 5. The steps of segmented cutting, sweeping and sorting collection of tobacco leaves are repeated (i.e., steps S2-S3) to complete the cutting of the next size of tobacco leaf 3 until all tobacco leaves 3 are cut according to the preset tobacco stem diameter.

[0066] The method for cutting tobacco leaves according to the diameter of the tobacco stems provided in this invention can accurately cut tobacco leaves according to the diameter of the tobacco stems during the tobacco leaf production process through an integrated cutting and sweeping device. This effectively controls the distribution range of the tobacco stem diameter, thereby meeting the high standards of industrial production, improving the effect of leaf re-drying process, reducing the stem content index in the leaves, and improving the quality of finished cigarettes. After cutting, the tobacco leaves can fall into different collection boxes for classification, which facilitates the processing of tobacco leaves containing specific tobacco stem diameters.

[0067] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0068] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A device for cutting tobacco leaves according to the diameter of the tobacco stem, characterized in that, include: A tobacco leaf conveying device is used to transport tobacco leaves. A cutting and sweeping integrated device is installed above the tobacco leaf conveying device. The cutting and sweeping integrated device is used to cut and sweep the tobacco leaves on the tobacco leaf conveying device. The tobacco leaf conveying device is connected to a leaf tobacco conveying device via a leaf tobacco downflow channel, and the cutting and sweeping integrated device corresponds to the position of the leaf tobacco downflow channel. Multiple leaf tobacco collection frames are provided on the leaf tobacco conveying device, and the leaf tobacco downflow channel is used to classify and transport the cut leaf tobacco to the leaf tobacco collection frames. The tobacco leaf conveying device includes a drive chain, and a leaf support plate is provided vertically on the outer side of the drive chain. Multiple equally spaced grooves are formed on the leaf support plate. The cutting and sweeping integrated device includes a cutting and sweeping integrated worktable, on which a leaf tobacco cleaning device and a tobacco leaf cutting device are provided, wherein: The integrated cutting and sweeping device is specifically used for: The second camera installed on the tobacco cutting device automatically scans the outline of the tobacco leaf and the diameter of the tobacco stem. The cutting thickness is determined according to the preset diameter. When the diameter of the tobacco stem in the tobacco leaf to be cut is reached, the drive device of the tobacco leaf conveying device is controlled to stop the tobacco leaf at the preset position. The laser positioning transmitter installed on the cutting and sweeping integrated device sends a signal to determine whether the tobacco leaf is in the middle groove of the leaf support plate. If it is not in the groove, the drive device of the tobacco leaf conveying device is controlled to make fine adjustments to ensure that the cutter can pass through the groove of the leaf support plate when cutting the tobacco leaf. Control the cutter to move downwards and complete the segmented cutting of the tobacco leaves.

2. The apparatus for cutting tobacco leaves according to the diameter of the tobacco stem as described in claim 1, characterized in that, The tobacco leaves are laid flat above the tobacco leaf conveying device; the downward sliding channel has an inclination angle of 30°. o -60 o The number of tobacco leaf collection frames is consistent with the number of tobacco leaf segments.

3. The apparatus for cutting tobacco leaves according to the diameter of the tobacco stem as described in claim 1, characterized in that, The tobacco leaf conveying device includes a height-adjustable first support frame, on which a belt is installed. The operating speed of the tobacco leaf conveying device, the cutting and sweeping speed of the integrated cutting and sweeping device, and the operating speed of the tobacco leaf conveying device are matched.

4. The apparatus for cutting tobacco leaves according to the diameter of the tobacco stem as described in claim 1, characterized in that, The leaf support plate is fixed to the drive chain by a fixing clamp. The fixing clamp is arranged vertically on the outer side of both ends of the drive chain, and the fixing clamp adopts a U-shaped structure to fix the drive chain and the leaf support plate as a whole; the tobacco leaf conveying device is provided with guard plates on both sides.

5. The apparatus for cutting tobacco leaves according to the diameter of the tobacco stem as described in claim 4, characterized in that, The integrated cutting and sweeping workbench is fixed above the tobacco leaf conveying device by four legs. The tops of two opposing legs are provided with side plates in the vertical direction. Each side plate is fixed to the corresponding leg by a fixing block. Each leg adopts a telescopic structure to adjust the height of the integrated cutting and sweeping workbench. The two side plates are connected by two fixed shafts, and a cutting and sweeping transmission belt and a first sliding shaft are provided between the two side plates.

6. The apparatus for cutting tobacco leaves according to the diameter of the tobacco stem as described in claim 5, characterized in that, The tobacco leaf cleaning device is located to the left of the tobacco leaf cutting device. The tobacco leaf cleaning device is fixed by a second support frame. Two first sliding bushings are symmetrically arranged on the lower surface of the upper fixed plate of the second support frame, and these two first sliding bushings are symmetrically distributed along the cutting and sweeping transmission belt. The first sliding bushings are positioned in conjunction with the first sliding shaft. A first drive motor is arranged on the upper surface of the upper fixed plate of the second support frame. The cutting and sweeping transmission belt is located below the second support frame and connected to the first drive motor. The first drive motor cooperates with the cutting and sweeping transmission belt to achieve belt drive. The cutting and sweeping transmission belt can reciprocate left and right along the first sliding shaft. A second locking device is arranged on the second support frame at a position corresponding to the cutting and sweeping transmission belt to tension the cutting and sweeping transmission belt. A first telescopic cylinder is provided at the center of the upper surface of the lower fixed plate of the second support frame. A first fixed frame is threadedly connected below the first telescopic cylinder. Second sliding shafts are threadedly connected to the upper two sides of the first fixed frame. The first telescopic cylinder is used to drive the first fixed frame to move up and down in the vertical direction. A cleaning plate is detachably connected to the lower part of the first fixed frame, and the cleaning plate adopts a soft bristle structure. A first fixed bracket is provided on the upper right side of the second support frame. A first camera is fixedly connected to the other end of the first fixed bracket. The first camera is used to determine the relative position of the first camera with the tobacco leaf conveying device and the cut tobacco leaves in real time through a visual recognition system, and feeds back to the first drive motor to control the tobacco leaf cleaning device to move back and forth left and right to achieve the cleaning of the cut tobacco leaves.

7. The apparatus for cutting tobacco leaves according to the diameter of the tobacco stem as described in claim 5, characterized in that, The tobacco leaf cutting device is located on the right side of the integrated cutting and sweeping workbench. The device includes a third support frame. Two second sliding bushings are symmetrically arranged along the lower surface of the upper end of the third support frame, and these bushings are also symmetrically distributed along the cutting and sweeping transmission belt. The second sliding bushings are fixed to the lower surface of the upper fixed plate of the third support frame and are positioned in conjunction with the first sliding shaft. A second drive motor is mounted on the upper surface of the upper fixed plate of the third support frame. The second drive motor and the cutting and sweeping transmission belt are driven by a gear belt. The cutting and sweeping transmission belt can reciprocate left and right along the first sliding shaft. A third locking device is located on the third support frame at a position corresponding to the cutting and sweeping transmission belt to tension the belt. A third locking device is located at the center of the upper surface of the lower fixed plate of the third support frame. The device includes a second telescopic cylinder, with a second fixed frame threadedly connected below it. Third sliding shafts are threadedly connected to both sides of the upper part of the second fixed frame. The second telescopic cylinder drives the second fixed frame to move vertically up and down. A cutter is detachably connected below the second fixed frame. Laser positioning transmitters are symmetrically arranged on both sides of the second fixed frame to monitor the position of the groove between the cutter and the leaf support plate in real time. A second fixed bracket is located on the upper right side of the third support frame, with a second camera at the other end. The second camera uses a visual recognition system to determine the relative left-right and up-down positions of the second camera, the tobacco conveying device, and the tobacco leaves to be cut in real time, and feeds this information back to the second drive motor to control the reciprocating movement of the tobacco cutting device to achieve tobacco cutting.

8. A method for cutting tobacco leaves according to the diameter of the tobacco stem using the apparatus described in any one of claims 1-7, characterized in that, Includes the following steps: The tobacco leaves to be cut are laid flat on the tobacco leaf conveying device so that the tobacco leaf conveying device can move the tobacco leaves forward. When the tobacco leaves move to the underside of the integrated cutting and sweeping device, the integrated cutting and sweeping device is used to cut the tobacco leaves into sections and to clean the cut tobacco leaves. After being cut, the tobacco leaves enter the tobacco leaf sliding channel and automatically slide down into the tobacco leaf collection box by gravity, completing the classification and collection of tobacco leaves of the current stem diameter. Once the integrated cutting and sweeping device resets, the tobacco leaf conveying device moves the next tobacco leaf collection frame forward to the tobacco sliding channel position, repeating the steps of segmented cutting, sweeping, and sorting collection of tobacco leaves to complete the cutting of the next size of tobacco leaves until all tobacco leaves are cut according to the preset tobacco stem diameter.

9. The method for cutting tobacco leaves according to the diameter of the tobacco stem as described in claim 8, characterized in that, The step of laying the tobacco leaves to be cut flat on the tobacco leaf conveying device, so that the tobacco leaf conveying device moves the tobacco leaves forward, specifically includes: The tobacco leaves to be cut are laid flat above the leaf support plate of the tobacco leaf conveying device, centered, and driven by the drive chain, the tobacco leaves move forward along the leaf support plate. When the tobacco leaves move to the underside of the integrated cutting and sweeping device, the device is used to cut the tobacco leaves into sections and clean the cut tobacco leaves, specifically including: The second camera installed on the tobacco cutting device automatically scans the outline of the tobacco leaf and the diameter of the tobacco stem. The cutting thickness is determined according to the preset diameter. When the diameter of the tobacco stem in the tobacco leaf to be cut is reached, the drive device of the tobacco leaf conveying device is controlled to stop the tobacco leaf at the preset position. The laser positioning transmitter installed on the cutting and sweeping integrated device sends a signal to determine whether the tobacco leaf is in the middle groove of the leaf support plate. If it is not in the groove, the drive device of the tobacco leaf conveying device is controlled to make fine adjustments to ensure that the cutter can pass through the groove of the leaf support plate when cutting the tobacco leaf. The second telescopic cylinder moves to control the cutter to move downwards, completing the segmented cutting of the tobacco leaves; After the cutting is completed, the second telescopic cylinder retracts, the second drive motor drives the tobacco cutting device to move to the right as a whole, and the first drive motor drives the tobacco cleaning device to move to the right as a whole in sync, reaching directly above the cut tobacco leaves. The first camera then determines whether the tobacco cleaning device is in place. If the tobacco scraping device is not in position, it moves to a preset position under the action of the first telescopic cylinder, and is driven to move to the left by the first transmission motor. The cleaning of the cut tobacco scraps is completed by the sweeping plate.

10. The method for cutting tobacco leaves according to the diameter of the tobacco stem as described in claim 8, characterized in that, The cut tobacco leaves enter the tobacco leaf sliding channel and automatically slide into the tobacco leaf collection box by gravity, completing the classification and collection of tobacco leaves of the current stem diameter. Specifically, this includes: After being cut, the tobacco leaves are moved into the tobacco leaf sliding channel by the sweeping plate, and automatically slide into the tobacco leaf collection box by gravity, completing the classification and collection of tobacco leaves of the current stem diameter.

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