A device and method for preparing tobacco
By using a preparation device and method to form irregular tobacco shreds, the problems of excessive density and high draw resistance caused by straight tobacco shreds are solved, resulting in better smoking effect and quality stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI TOBACCO GROUP CO LTD
- Filing Date
- 2022-12-27
- Publication Date
- 2026-05-19
AI Technical Summary
The existing roll forming process produces straight tobacco shreds, which results in excessive density, high draw resistance, and poor smoke generation when the cigarette is rolled by the cigarette machine. Furthermore, the introduction of a blending step in the process increases the difficulty of product quality control.
An irregular tobacco shreds are formed by a tobacco shreds preparation device, a primary pressure roller, a final pressure roller and a stretching pressure roller mechanism. Combined with a slicing mechanism, mesh holes are slicing out on the tobacco sheet, and a mesh tobacco sheet is formed by stretching. Finally, it is cut into irregular tobacco shreds, increasing the gaps between the tobacco shreds to reduce the density of cigarettes.
It improved the smoke production and smoking experience of cigarettes, stabilized the quality of cigarettes, and enhanced the filling performance and smoke production effect of cigarettes.
Smart Images
Figure CN118252276B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of tobacco preparation and processing technology, and in particular to an apparatus and method for preparing tobacco shreds. Background Technology
[0002] Currently, reconstituted tobacco mainly includes paper-process reconstituted tobacco, dry-process reconstituted tobacco, slurry-process reconstituted tobacco, and roll-pressed reconstituted tobacco. It is generally made from low-grade tobacco fragments or stems, resulting in a weak aroma profile. Slurry-process and roll-pressed reconstituted tobacco, due to their higher density, fewer exogenous fibers, and higher proportion of tobacco substances, are more commonly used in heated cigarettes. Looking at current domestic and international product characteristics, heated cigarettes using high-density slurry-process or roll-pressed reconstituted tobacco have reconstituted tobacco shreds with an almost straight shape. This shape results in a lower filling value, easily leading to excessive density during rolling, thus affecting the smoking quality. To alleviate this problem, it is often necessary to blend low-density smoking materials such as stems or paper-process reconstituted tobacco shreds into the high-density straight reconstituted tobacco shreds to lower the density of the cigarette and improve the smoking performance. However, this introduces a blending step into the process, increasing the difficulty of controlling product quality uniformity. Summary of the Invention
[0003] The purpose of this invention is to address the problem that existing roll-pressing sheet-forming processes produce straight tobacco shreds. Straight tobacco shreds tend to be overly densely packed during cigarette rolling, resulting in fewer gaps between them, higher draw resistance, and slower temperature rise when the cigarette is heated, thus affecting the smoking experience. This invention provides a tobacco shred preparation apparatus that creates more gaps between the resulting irregular tobacco shreds, reducing the rolling density of the cigarette, thereby improving the smoking experience, enhancing the smoking sensation, and contributing to stable cigarette quality.
[0004] To address the aforementioned technical problems, embodiments of the present invention disclose an apparatus for preparing tobacco shreds, comprising: a primary pressure roller mechanism, a final pressure roller mechanism, and a stretching pressure roller mechanism arranged sequentially in a horizontal direction, and a slitting mechanism. The primary pressure roller mechanism rolls tobacco material to form a first tobacco sheet of uniform thickness; the first tobacco sheet is rolled by the final pressure roller mechanism to form a second tobacco sheet; the slitting mechanism is located between the final pressure roller mechanism and the stretching pressure roller mechanism; the slitting mechanism slits the second tobacco sheet to form a third tobacco sheet with mesh openings; the stretching pressure roller mechanism moves at a speed greater than that of the final pressure roller mechanism, and is used to stretch the third tobacco sheet to form a mesh-like tobacco sheet.
[0005] By adopting the above technical solution, more gaps are formed between the irregular tobacco shreds, which helps to reduce the rolling density of cigarettes, thereby improving the smoking condition, improving the smoking experience of cigarettes, and helping to stabilize the quality of cigarettes.
[0006] According to another specific embodiment of the present invention, an apparatus for preparing tobacco shreds is disclosed, wherein a primary pressure roller mechanism is provided in at least one pair or more.
[0007] According to another specific embodiment of the present invention, an apparatus for preparing tobacco shreds is disclosed. The slicing mechanism includes multiple blades and a driving device. The driving device drives the blades to reciprocate along the vertical direction toward the second tobacco sheet.
[0008] According to another specific embodiment of the present invention, an apparatus for preparing tobacco shreds is disclosed, wherein a plurality of cutting heads are spaced apart along the width direction of a second tobacco sheet.
[0009] According to another specific embodiment of the present invention, an apparatus for preparing tobacco shreds is disclosed, wherein the distance between any two adjacent cutting heads along the width direction is 2mm-3mm.
[0010] According to another specific embodiment of the present invention, an apparatus for preparing tobacco shreds is disclosed, wherein each cutter extends in the width direction and the length of each cutter extending in the width direction is 5mm-15mm.
[0011] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a tobacco shred preparation apparatus, which further includes an anvil roller, the anvil roller being arranged vertically toward the slicing mechanism, and when the second tobacco sheet moves onto the anvil roller, the cutting head reciprocates vertically toward the second tobacco sheet.
[0012] According to another specific embodiment of the present invention, an apparatus for preparing tobacco shreds is disclosed, wherein a second tobacco sheet is slit at intervals of 1.5 mm to 2.0 mm in the horizontal direction by a slitting mechanism.
[0013] According to another specific embodiment of the present invention, an apparatus for preparing tobacco shreds is disclosed, wherein a plurality of blades are arranged at intervals along the width direction in at least two rows, and adjacent rows of blades are staggered.
[0014] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a tobacco shred preparation apparatus, which further includes a shoveling device that shovels the mesh tobacco sheet away from the stretching roller mechanism.
[0015] According to another specific embodiment of the present invention, an apparatus for preparing tobacco shreds is disclosed, which further includes a drying mechanism for drying the mesh tobacco sheet to a moisture content of 2wt%-12wt%.
[0016] According to another specific embodiment of the present invention, an apparatus for preparing tobacco shreds is disclosed, which further includes a cutting device. The cutting device cuts the mesh tobacco sheet dried by the drying mechanism along the width direction and the horizontal direction to form irregular tobacco shreds.
[0017] The present invention also discloses a method for preparing tobacco shreds, which uses a tobacco shred preparation device to prepare tobacco shreds. The preparation device includes a primary pressure roller mechanism, a final pressure roller mechanism, and a stretching pressure roller mechanism arranged in a horizontal direction, as well as a sizing mechanism. The preparation method includes the following steps:
[0018] Primary roll forming: The primary roll forming mechanism is used to roll tobacco materials to form a first tobacco sheet of uniform thickness;
[0019] Final stage rolling: The final stage pressure roller mechanism is used to roll the first tobacco sheet to form the second tobacco sheet;
[0020] Slicing: The slicing mechanism slices the second tobacco sheet to form a third tobacco sheet with a mesh.
[0021] Stretch roll pressing: The stretch roll pressing mechanism is used to stretch the third tobacco sheet to form a mesh tobacco sheet.
[0022] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a method for preparing tobacco shreds, wherein in the stretching and rolling step, a third tobacco sheet is stretched to 2-5 times its original length to form a mesh tobacco sheet.
[0023] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a method for preparing tobacco shreds, wherein a scraping step is performed after the stretching and pressing step, and the scraping step scrapes the mesh tobacco sheet away from the stretching and pressing roller mechanism.
[0024] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a method for preparing tobacco shreds, wherein a drying step is performed after the shoveling step, and the drying step dries the mesh tobacco sheet to a moisture content of 2wt%-12wt%.
[0025] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a method for preparing tobacco shreds, wherein a cutting step is performed after the drying step, and the cutting step cuts the mesh tobacco sheet after the drying step along the width direction and the horizontal direction of the mesh tobacco sheet to form irregular tobacco shreds. Attached Figure Description
[0026] Figure 1 A schematic diagram of the tobacco preparation apparatus of the present invention, including a primary pressure roller mechanism, is shown.
[0027] Figure 2A schematic diagram of an apparatus for preparing tobacco shreds without a primary pressure roller mechanism is shown in this invention.
[0028] Figure 3 A schematic diagram of the mesh tobacco sheet in this invention is shown;
[0029] Figure 4 A flowchart illustrating the preparation method of the mesh tobacco sheet in this invention is shown. Detailed Implementation
[0030] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the present invention is presented in conjunction with preferred embodiments, this does not mean that the features of the invention are limited to these embodiments. On the contrary, the purpose of describing the invention in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of the present invention. To provide a deep understanding of the invention, many specific details will be included in the following description. The invention may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of the invention, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.
[0031] 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.
[0032] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in during use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.
[0033] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0034] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.
[0035] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
[0036] refer to Figure 1 and Figure 3 This invention proposes a tobacco shred preparation apparatus 00, comprising: along a horizontal direction (e.g., Figure 1 The primary pressure roller mechanism 10, the final pressure roller mechanism 20, and the stretching pressure roller mechanism 30, arranged sequentially in the X direction shown in the figure, and the slitting mechanism 40, are used to roll the tobacco material to form a first tobacco sheet of uniform thickness (not shown in the figure). The first tobacco sheet is rolled by the final pressure roller mechanism 20 to form a second tobacco sheet 02. The slitting mechanism 40 is located between the final pressure roller mechanism 20 and the stretching pressure roller mechanism 30. The slitting mechanism 40 slits the second tobacco sheet 02 to form a third tobacco sheet 03 with mesh 031. The stretching pressure roller mechanism 30 moves at a speed greater than that of the final pressure roller mechanism 20 and is used to stretch the third tobacco sheet 03 to form a mesh tobacco sheet 04.
[0037] Tobacco materials generally refer to tobacco powder and wet materials that are further mixed to form a soft, lumpy solid that can be deformed by rolling.
[0038] Among them, tobacco powder raw material crushing refers to crushing tobacco materials in different forms, such as tobacco stems, tobacco leaves, fragments, and tobacco dust, into powder using a crusher; wet material preparation mainly refers to mixing and homogenizing water, adhesives, atomizing agents, natural plant fibers, etc. in a certain proportion.
[0039] The primary pressure roller mechanism 10 rolls the tobacco material to form a first tobacco sheet of uniform thickness. The primary pressure roller mechanism 10 is generally provided in at least one pair.
[0040] The primary pressure roller mechanism 10 can be configured as a pair of pressure rollers or multiple pairs of pressure rollers. Multiple pairs of pressure rollers can achieve the gradual thinning of tobacco sheets.
[0041] For example, three pairs of primary pressure roller mechanisms 10 can sequentially roll the tobacco material to form a first tobacco sheet of uniform thickness. Setting three pairs of primary pressure roller mechanisms 10 can achieve the effect of rolling in stages and avoid excessive force on the primary pressure roller mechanism 10.
[0042] The first tobacco sheet can be transported to the final pressure roller mechanism 20 via a conveyor belt (not shown in the figure), or the primary pressure roller mechanism 10 and the final pressure roller mechanism 20 can be at the same horizontal height and the horizontal distance between the primary pressure roller mechanism 10 and the final pressure roller mechanism 20 can be small enough. The first tobacco sheet, after being rolled by the primary pressure roller mechanism 10, can enter the final pressure roller mechanism 20 on its own and be rolled by the final pressure roller mechanism 20 to form the second tobacco sheet 02.
[0043] The slicing mechanism 40 is located between the final pressure roller mechanism 20 and the stretching pressure roller mechanism 30. The slicing mechanism 40 slices the second tobacco sheet 02 formed by the final pressure roller mechanism 20 to form a third tobacco sheet 03 with mesh holes 031. Slicing refers to cutting multiple hollow mesh holes 031 into the second tobacco sheet 02.
[0044] In this application, the movement speed of the stretching roller mechanism 30 is greater than that of the final stage roller mechanism 20. The third tobacco sheet 03 with mesh 031 can be transported to the stretching roller mechanism 30 via a conveyor belt (not shown in the figure). Because the movement speed of the stretching roller mechanism 30 is greater than that of the final stage roller mechanism 20, the stretching roller mechanism 30 stretches the third tobacco sheet 03 to form a mesh tobacco sheet 04. The movement speed of the stretching roller mechanism 30 is 2-5 times that of the final stage roller mechanism 20.
[0045] Therefore, what is produced in this application is no longer a whole sheet of tobacco, but a mesh-like sheet of tobacco.
[0046] Ultimately, the mesh-like tobacco sheet is cut into irregular tobacco shreds. The resulting irregular tobacco shreds have more gaps, which helps to reduce the rolling density of the cigarette, thereby improving the smoking condition, enhancing the smoking experience, and helping to stabilize the quality of the cigarette.
[0047] In other possible implementations, the irregular tobacco shreds may not contain any arbitrarily closed mesh; that is, the mesh-like tobacco sheet is cut into irregular tobacco shreds without closed lines. These irregular tobacco shreds are then rolled into cigarettes, resulting in cigarettes with good filling density and excellent smoke production.
[0048] Combination Figure 1 and Figure 2 The slicing mechanism 40 includes multiple cutter heads 41 and a drive device 42, which drives the cutter heads 41 in a vertical direction. Figure 1 or Figure 2 (as shown in the Z direction) and reciprocates in the direction toward the second tobacco sheet 02.
[0049] Combination Figure 2 and Figure 3 Multiple cutting heads 41 are spaced apart along the width direction of the second tobacco sheet 02. The multiple cutting heads 41 simultaneously reciprocate vertically towards the second tobacco sheet 02, thereby simultaneously creating multiple perforated mesh holes 031 on the second tobacco sheet 02. These perforated mesh holes 031 are also along the width direction. Figure 3 The Y-direction spacing is shown in the diagram.
[0050] refer to Figure 2 Any two adjacent cutter heads 41 along the width direction ( Figure 2 The spacing in the Y direction shown is 2mm-3mm.
[0051] Continue to refer to Figure 2 Each cutter head 41 along the width direction ( Figure 2 As shown in the Y direction, each cutter head 41 extends 5mm-15mm in the width direction. This length corresponds to the mesh opening 031 created by the cutter head 41. Figure 3 The length shown in the figure.
[0052] refer to Figure 1 and Figure 3 The tobacco shred preparation apparatus 00 also includes an anvil roller 50, which supports the second tobacco sheet 02 formed after being rolled by the final stage pressure roller mechanism 20, so that when the second tobacco sheet 02 moves onto the anvil roller 50, the cutter head 41 faces the second tobacco sheet 02 in the vertical direction (e.g., ...). Figure 1 The anvil roller 50 (in the Z direction shown) reciprocates, allowing multiple perforated mesh holes 031 to be simultaneously drawn on the second tobacco sheet 02. Furthermore, the anvil roller 50 can rotate, and its surface linear velocity is consistent with the output velocity of the second tobacco sheet 02 formed after being rolled by the final stage pressure roller mechanism 20.
[0053] The second tobacco sheet 02 is in the horizontal direction (e.g.) Figure 3 The slicing mechanism 40 performs slicing at intervals of 1.5mm-2.0mm along the X direction (as shown in the diagram).
[0054] Multiple blades 41 are arranged in at least two rows, spaced apart along the width direction, with adjacent rows of blades 41 staggered. In other possible embodiments, multiple blades 41 are arranged in two rows, spaced apart along the width direction, wherein the first row is closer to the final pressure roller mechanism 20 than the second row. Each blade 41 in the first row is staggered from each blade 41 in the second row, and the multiple blades 41 in the first row cut multiple perforated meshes 031 (which can be combined with...) on the second tobacco sheet 02. Figure 3 The multiple cutters 41 in the second row cut multiple perforated mesh holes 031 in the second tobacco sheet 02. Each mesh hole 031 in the first row is not aligned with each mesh hole 031 in the second row.
[0055] The tobacco preparation apparatus also includes a shovel device (not shown in the figure) that shovels the mesh tobacco sheet away from the stretching roller mechanism 30.
[0056] The tobacco preparation apparatus also includes a drying mechanism (not shown in the figure) for drying the mesh tobacco sheets to a moisture content of 2wt%-12wt%.
[0057] Preferably, the drying mechanism further dries the mesh tobacco sheet to a moisture content of 5wt%-10wt%, forming a mesh tobacco sheet with a suitable moisture content. Mesh tobacco sheets with a moisture content of 5wt%-10wt% have good smoking performance. Generally speaking, mesh tobacco sheets with a moisture content below 2wt% are too dry, have poor folding resistance, and are easily broken. Mesh tobacco sheets with a moisture content above 12wt% produce more water vapor when heated after being made into cigarettes, which releases more heat upon condensation, resulting in a higher smoke temperature.
[0058] The tobacco shred preparation apparatus also includes a cutting device (not shown in the figure), which cuts the mesh tobacco sheet dried by the drying mechanism along its width direction (e.g., ...). Figure 3 (as shown in the Y direction) and the horizontal direction (as shown in the middle ... Figure 3 Cut the tobacco into irregular shreds (as shown in the X direction).
[0059] The resulting tobacco shreds are no longer straight, but rather irregular shreds with branches or "branches." These irregular shreds can take the form of a "K," a "Y," or other shapes. They can also be shreds without any closed mesh, meaning the mesh-like tobacco sheet is cut into irregular shreds without closed lines. When these irregular shreds are rolled into cigarettes, they have good filling density, good smoke production, and good filling properties, with more gaps between the irregular shreds.
[0060] This invention also provides a method for preparing tobacco shreds, using a tobacco shred preparation device 00. The preparation device includes a primary pressure roller mechanism 10, a final pressure roller mechanism 20, and a stretching pressure roller mechanism 30 arranged sequentially in a horizontal direction, as well as a sizing mechanism 40. The preparation method includes the following steps:
[0061] Primary rolling: The primary rolling mechanism 10 is used to roll tobacco material to form a first tobacco sheet of uniform thickness;
[0062] Final stage rolling: The final stage pressure roller mechanism 20 is used to roll the first tobacco sheet to form the second tobacco sheet 02;
[0063] Slicing: The slicing mechanism 40 slices the second tobacco sheet 02 to form a third tobacco sheet 03 with mesh 031;
[0064] Stretch roll pressing: The stretch roll mechanism 30 is used to stretch the third tobacco sheet 03 to form a mesh tobacco sheet.
[0065] In the stretching and rolling step, the third tobacco sheet 03 is stretched to 2-5 times its original length to form a mesh tobacco sheet.
[0066] After the stretching and pressing step, a scraping step is performed to remove the mesh tobacco sheet from the stretching and pressing roller mechanism 30. After the scraping step, a drying step is performed to dry the mesh tobacco sheet to a moisture content of 2wt%-12wt%.
[0067] Preferably, the drying step further dries the mesh tobacco sheet to a moisture content of 5wt%-10wt%, forming a mesh tobacco sheet with a suitable moisture content. Mesh tobacco sheets with a moisture content of 5wt%-10wt% have good smoking performance. Generally speaking, mesh tobacco sheets with a moisture content below 2wt% are too dry, have poor folding resistance, and are easily broken. Mesh tobacco sheets with a moisture content above 12wt% produce more water vapor when heated after being made into cigarettes, which releases more heat upon condensation, resulting in a higher smoke temperature.
[0068] After the material scraping step, a cutting step is performed. The cutting step cuts the dried mesh tobacco sheet along the width and horizontal direction to form irregular tobacco shreds.
[0069] The resulting tobacco shreds are no longer straight, but rather irregular shreds with branches or "branches." These irregular shreds can take the form of a "K," a "Y," or other shapes. They can also be shreds without any closed mesh, meaning the mesh-like tobacco sheet is cut into irregular shreds without closed lines. When these irregular shreds are rolled into cigarettes, they have good filling density, good smoke production, and good filling properties, with more gaps between the irregular shreds.
[0070] Example
[0071] Tobacco material is pulverized to an average particle size of 60 μm. 30 parts water, 10 parts glycerol, 1 part wood pulp fiber, and 1 part sodium carboxymethyl cellulose are vigorously stirred and pulped to obtain a wet material. This wet material is then mixed evenly with 40 parts tobacco powder to form clumps or granules. The material is fed into a screw extruder for extrusion, further mixing and eliminating internal pores. The extruded material passes through three primary pressure roller mechanisms to form a first tobacco sheet. This first tobacco sheet then passes through a final pressure roller mechanism to form a second tobacco sheet with a thickness of 0.16 mm. The second tobacco sheet is cut by the reciprocating motion of a cutter head. The tobacco sheet is marked with cuts, or rather, multiple perforations are made in the second tobacco sheet. The cuts are 15mm long, meaning each cutter extends 15mm along its width. The second tobacco sheet is also cut at 2.0mm intervals in the traveling direction and at 2.0mm intervals in the horizontal direction to form a third tobacco sheet with a mesh. In the stretching and rolling step, the third tobacco sheet is stretched to twice its original length, forming a mesh tobacco sheet with a thickness of 0.16mm. The mesh tobacco sheet is then removed from the stretching and pressing mechanism and enters a tunnel-type drying oven. It is heated and dehydrated to a moisture content of 6%, and then cut into irregular 15mm*15mm tobacco shreds along its width and horizontal directions using a cutting device. These irregular tobacco shreds can be formed into "K" shapes, "Y" shapes, or other shapes.
[0072] The density of the cigarette rolled using this irregular tobacco shreds was measured to be 0.5 g / cm³. 3 The cigarettes have good roundness and hardness, are easy to draw, improve the smoke production, and enhance the smoking experience.
[0073] Comparative Example
[0074] The tobacco material is pulverized into powder with an average particle size of 60μm. 30 parts water, 10 parts glycerol, 1 part wood pulp fiber, and 1 part sodium carboxymethyl cellulose are vigorously stirred and pulped to obtain a wet material. The wet material is mixed evenly with 40 parts tobacco powder to form clumps or granules. The material is fed into a screw extruder for extrusion to further mix and eliminate internal pores. The extruded material is then subjected to four stages of roller pressing to form a first tobacco sheet with a thickness of 0.16mm. After that, it is heated and dehydrated to a moisture content of 6%. The sheet is then fed into a shredder and cut into reconstituted tobacco shreds with a width of 1mm and a length of about 15mm.
[0075] The density of the cigarettes rolled using this reconstituted tobacco shreds was measured to be 0.58 g / cm³. 3 The cigarettes have good roundness and hardness, but they are not easy to draw, have high resistance, and produce very poor smoke.
[0076] While the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the invention to these descriptions. Various changes in form and detail can be made by those skilled in the art, including several simple deductions or substitutions, without departing from the spirit and scope of the invention.
Claims
1. An apparatus for preparing tobacco shreds, characterized in that, include: The primary pressure roller mechanism, the final pressure roller mechanism, and the tension pressure roller mechanism are arranged sequentially along the horizontal direction, along with the slitting mechanism. The primary pressure roller mechanism rolls the tobacco material to form a first tobacco sheet of uniform thickness. The first tobacco sheet is rolled by the final stage pressure roller mechanism to form a second tobacco sheet; the slitting mechanism is located between the final stage pressure roller mechanism and the stretching pressure roller mechanism; the slitting mechanism slits the second tobacco sheet to form a third tobacco sheet with mesh. The speed of the stretching roller mechanism is greater than that of the final roller mechanism, and it is used to stretch the third tobacco sheet to form a mesh tobacco sheet. The mesh tobacco sheet is cut to form irregular tobacco shreds.
2. The apparatus for preparing tobacco shreds as described in claim 1, characterized in that, The primary pressure roller mechanism is provided in at least one pair.
3. The apparatus for preparing tobacco shreds as described in claim 1, characterized in that, The slicing mechanism includes multiple blades and a driving device. The driving device drives the blades to reciprocate in a vertical direction toward the second tobacco sheet.
4. The apparatus for preparing tobacco shreds as described in claim 3, characterized in that, The plurality of blades are spaced apart along the width direction of the second tobacco sheet.
5. The apparatus for preparing tobacco shreds as described in claim 4, characterized in that, The distance between any two adjacent cutter heads along the width direction is 2mm-3mm.
6. The apparatus for preparing tobacco shreds as described in claim 4, characterized in that, Each of the cutting heads extends along the width direction, and the length of each of the cutting heads extending along the width direction is 5mm-15mm.
7. The apparatus for preparing tobacco shreds as described in claim 3, characterized in that, It also includes a cutting board roller, which is arranged along the vertical direction toward the slicing mechanism, and when the second tobacco sheet moves onto the cutting board roller, the cutting head reciprocates toward the second tobacco sheet along the vertical direction.
8. The apparatus for preparing tobacco shreds as described in claim 3, characterized in that, The second tobacco sheet is slit by the slitting mechanism at intervals of 1.5mm-2.0mm in the horizontal direction.
9. The apparatus for preparing tobacco shreds as described in claim 4, characterized in that, The plurality of cutter heads are arranged at intervals along the width direction in at least two rows, and adjacent rows of cutter heads are staggered.
10. The apparatus for preparing tobacco shreds as described in claim 1, characterized in that, It also includes a shoveling device that shovels the mesh tobacco sheet away from the stretching roller mechanism.
11. The apparatus for preparing tobacco shreds as described in claim 4, characterized in that, It also includes a drying mechanism for drying the mesh tobacco sheet to a moisture content of 2wt%-12wt%.
12. The apparatus for preparing tobacco shreds as described in claim 11, characterized in that, It also includes a cutting device that cuts the mesh tobacco sheet dried by the drying mechanism along the width direction and the horizontal direction to form irregular tobacco shreds.
13. A method for preparing tobacco shreds, characterized in that, Tobacco shreds are prepared using the tobacco shred preparation apparatus as described in any one of claims 1-12, the preparation apparatus comprising a primary pressure roller mechanism, a final pressure roller mechanism, and a stretching pressure roller mechanism arranged sequentially in a horizontal direction, and a sizing mechanism, the preparation method comprising the following steps: Primary rolling: The primary rolling mechanism is used to roll tobacco material to form a first tobacco sheet of uniform thickness; Final stage rolling: The final stage pressure roller mechanism is used to roll the first tobacco sheet to form a second tobacco sheet; Slicing: The slicing mechanism slices the second tobacco sheet to form a third tobacco sheet with mesh. Stretch roll pressing: The stretch roll pressing mechanism is used to stretch the third tobacco sheet to form a mesh tobacco sheet.
14. The method for preparing tobacco shreds as described in claim 13, characterized in that, In the stretching and rolling step, the third tobacco sheet is stretched to 2-5 times its original length to form the mesh tobacco sheet.
15. The method for preparing tobacco shreds as described in claim 13, characterized in that, After the stretching and pressing step, a scraping step is performed to remove the mesh tobacco sheet from the stretching and pressing roller mechanism.
16. The method for preparing tobacco shreds as described in claim 15, characterized in that, After the shoveling step, a drying step is performed to dry the mesh tobacco sheet to a moisture content of 2wt%-12wt%.
17. The method for preparing tobacco shreds as described in claim 16, characterized in that, After the drying step, a cutting step is performed, in which the mesh tobacco sheet dried in the drying step is cut along the width direction and the horizontal direction to form irregular tobacco shreds.