CN118252276A - Tobacco shred preparation device and preparation method - Google Patents

Abstract

The invention discloses a tobacco shred preparing device, which comprises: the tobacco material drawing machine comprises a primary compression roller mechanism, a final compression roller mechanism, a stretching compression roller mechanism and a notch cutting mechanism which are sequentially arranged along the horizontal direction, wherein the primary compression roller mechanism carries out rolling on tobacco materials to form a first tobacco sheet with uniform thickness; the first tobacco sheet is rolled by a final-stage compression roller mechanism to form a second tobacco sheet; the notch cutting mechanism is positioned between the final-stage compression roller mechanism and the stretching compression roller mechanism; the opening cutting mechanism cuts the second tobacco sheet to form a third tobacco sheet with meshes; the speed of movement of the stretching press roller mechanism is greater than the speed of movement of the final press roller mechanism for stretching the third tobacco sheet to form a netlike tobacco sheet. The meshed tobacco sheet finally has more gaps among irregular tobacco shreds formed by cutting, is beneficial to reducing the rolling density of cigarettes, improving the smoking condition and being beneficial to stabilizing the quality of the cigarettes. The invention also provides a preparation method of the cut tobacco.

Description

Tobacco shred preparation device and preparation method

Technical Field

The invention relates to the technical field of tobacco preparation and processing, in particular to a tobacco shred preparation device and a tobacco shred preparation method.

Background

At present, the reconstituted tobacco mainly comprises papermaking reconstituted tobacco, dry reconstituted tobacco, thick slurry reconstituted tobacco and rolling reconstituted tobacco, and is generally formed by reconstituted tobacco fragments or tobacco stems with low grade, and tobacco aroma substances are weak. From the aspect of the product properties at home and abroad at present, the reconstituted tobacco shreds of the heated cigarette adopting the high-density thick slurry method or the rolling method are all in the shape of approximately straight tobacco shreds, and the reconstituted tobacco shreds in the shape have lower filling value, and are easy to cause overlarge density during rolling, so that the smoking quality is affected. In order to alleviate the problem, a low-density smoke material such as cut stems or paper-making reconstituted tobacco shreds is often blended into the high-density linear reconstituted tobacco shreds, the density of the tobacco shreds is reduced, and the smoke condition is improved, but the blending link is introduced in the process flow, so that the control difficulty of uniform product quality is increased.

Disclosure of Invention

The invention aims to solve the problems that the tobacco shreds prepared by the existing rolling method sheet process are all linear, the linear tobacco shreds are easy to fill too tightly when being rolled by a cigarette machine, gaps among the linear tobacco shreds are small, the suction resistance is large, the temperature rise is slow when cigarettes are heated, and the smoking effect is affected. The invention provides a tobacco shred preparation device, which enables more gaps to be formed among irregular tobacco shreds which are finally formed, is beneficial to reducing the rolling density of cigarettes, further improves the smoking condition, improves the smoking feeling of the cigarettes, and is beneficial to stabilizing the quality of the cigarettes.

In order to solve the technical problems, the embodiment of the invention discloses a tobacco shred preparing device, which comprises: the tobacco material drawing machine comprises a primary compression roller mechanism, a final compression roller mechanism, a stretching compression roller mechanism and a notch cutting mechanism which are sequentially arranged along the horizontal direction, wherein the primary compression roller mechanism carries out rolling on tobacco materials to form a first tobacco sheet with uniform thickness; the first tobacco sheet is rolled by a final-stage compression roller mechanism to form a second tobacco sheet; the notch cutting mechanism is positioned between the final-stage compression roller mechanism and the stretching compression roller mechanism; the opening cutting mechanism cuts the second tobacco sheet to form a third tobacco sheet with meshes; the speed of movement of the stretching press roller mechanism is greater than the speed of movement of the final press roller mechanism for stretching the third tobacco sheet to form a netlike tobacco sheet.

By adopting the technical scheme, more gaps are formed among the finally formed irregular cut tobacco, so that the rolling density of the cigarettes is reduced, the smoking condition is improved, the smoking feeling of the cigarettes is improved, and the quality of the cigarettes is stabilized.

According to another specific embodiment of the invention, the embodiment of the invention discloses a tobacco shred preparing device, wherein at least one pair of primary compression roller mechanisms are arranged.

According to another specific embodiment of the invention, the embodiment of the invention discloses a tobacco shred preparing device, wherein the cut-off mechanism comprises a plurality of cutter heads and a driving device, and the driving device drives the cutter heads to reciprocate along the vertical direction and towards the direction of a second tobacco sheet.

According to another embodiment of the invention, the embodiment of the invention discloses a tobacco shred preparing device, and a plurality of cutter heads are arranged at intervals along the width direction of a second tobacco sheet.

According to another specific embodiment of the invention, the embodiment of the invention discloses a tobacco shred preparing device, and the distance between any two adjacent cutter heads along the width direction is 2mm-3mm.

According to another embodiment of the invention, the embodiment of the invention discloses a tobacco shred preparing device, each cutter head extends along the width direction, and the length of each cutter head extending along the width direction is 5mm-15mm.

According to another specific embodiment of the invention, the embodiment of the invention discloses a tobacco shred preparing device, which further comprises a cutting board roller, wherein the cutting board roller is arranged towards the cutting mechanism along the vertical direction, and when the second tobacco sheet moves onto the cutting board roller, the cutter head moves back and forth along the vertical direction towards the second tobacco sheet.

According to another specific embodiment of the invention, the embodiment of the invention discloses a tobacco shred preparing device, and the second tobacco sheets are cut by a cutting mechanism at intervals of 1.5mm-2.0mm in the horizontal direction.

According to another specific embodiment of the invention, the embodiment of the invention discloses a tobacco shred preparing device, a plurality of cutter heads are arranged at intervals in the width direction in at least two rows, and two adjacent rows of cutter heads are arranged in a staggered mode.

According to another specific embodiment of the invention, the embodiment of the invention discloses a tobacco shred preparing device, which further comprises a shoveling device, wherein the shoveling device shovels the meshed tobacco sheets away from the stretching press roller mechanism.

According to another specific embodiment of the invention, the embodiment of the invention discloses a tobacco shred preparing device, which further comprises a drying mechanism for drying the netlike tobacco sheets to a water content of 2-12 wt%.

According to another embodiment of the invention, the embodiment of the invention discloses a tobacco shred preparing device, which further comprises a cutting device, wherein the cutting device cuts the mesh tobacco sheets dried by the drying mechanism along the width direction and the horizontal direction to form irregular tobacco shreds.

The embodiment of the invention also discloses a tobacco shred preparation method, which comprises the following steps of:

Primary rolling: the primary compression roller mechanism is used for rolling the tobacco materials to form a first tobacco sheet with uniform thickness;

final stage rolling: the final-stage pressing roller mechanism is used for rolling the first tobacco sheet to form a second tobacco sheet;

Scribing: the opening cutting mechanism cuts the second tobacco sheet to form a third tobacco sheet with meshes;

Stretching and rolling: the stretching press roller mechanism is used for stretching the third tobacco sheet to form a netlike tobacco sheet.

According to another embodiment of the invention, the embodiment of the invention discloses a preparation method of cut tobacco, wherein in the stretching and rolling step, the third tobacco sheet is stretched to 2-5 times of the original length to form a meshed tobacco sheet.

According to another specific embodiment of the invention, the embodiment of the invention discloses a tobacco shred preparation method, wherein a shoveling step is performed after a stretching and rolling step, and the shoveling step shovels the meshed tobacco sheets from a stretching and pressing roller mechanism.

According to another specific embodiment of the invention, the embodiment of the invention discloses a tobacco shred preparation method, which comprises the steps of carrying out a drying step after a shoveling step, wherein the drying step enables the meshed tobacco sheets to be dried to a water content of 2-12 wt%.

According to another embodiment of the present invention, the present invention discloses a method for producing cut tobacco, wherein a cutting step is performed after a drying step, and the cut tobacco is obtained by cutting the mesh tobacco sheet dried in the drying step along the width direction and the horizontal direction of the mesh tobacco sheet, so as to form irregular cut tobacco.

Drawings

Fig. 1 shows a schematic diagram of a device for preparing cut tobacco comprising a primary press roller mechanism according to the present invention;

FIG. 2 shows a schematic diagram of a tobacco shred preparing apparatus according to the present invention that does not include a primary press roller mechanism;

FIG. 3 shows a schematic view of a mesh tobacco sheet of the present invention;

fig. 4 shows a flow chart of a method of making a reticulated tobacco sheet in accordance with the present invention.

Detailed Description

Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present invention with specific examples. While the description of the invention will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the invention described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the invention. The following description contains many specific details for the purpose of providing a thorough understanding of the present invention. The invention may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

It should be noted that in this specification, like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present embodiment, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present invention.

The terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present embodiment can be understood in a specific case by those of ordinary skill in the art.

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1 and 3, the present invention proposes a tobacco shred preparing apparatus 00, comprising: a primary press roller mechanism 10, a final press roller mechanism 20, a stretching press roller mechanism 30, and a scoring mechanism 40 which are arranged in this order in the horizontal direction (X direction as shown in fig. 1), the primary press roller mechanism 10 rolls the tobacco material to form a first tobacco sheet (not shown in the figure) of uniform thickness; the first tobacco sheet is rolled by a final-stage pressing roller mechanism 20 to form a second tobacco sheet 02; the scoring mechanism 40 is positioned between the final stage press roller mechanism 20 and the stretching press roller mechanism 30; the scoring mechanism 40 scoring the second tobacco sheet 02 to form a third tobacco sheet 03 having a mesh 031; the stretching press roller mechanism 30 moves at a speed greater than that of the final press roller mechanism 20 for stretching the third tobacco sheet 03 to form the net-like tobacco sheet 04.

Tobacco materials generally refer to tobacco powders and wet materials that are further homogenized to form a soft, dough-like solid that can be deformed by rolling.

Wherein, the crushing of the tobacco powder raw material refers to crushing tobacco materials with different forms such as tobacco stems, tobacco flakes, fragments, tobacco dust and the like into powder through a crusher; the wet material preparation mainly comprises the steps of mixing and homogenizing water, an adhesive, an atomizing agent, natural plant fibers and the like in a certain proportion.

The primary press roller mechanism 10 rolls the tobacco material to form a first tobacco sheet of uniform thickness. The primary press roller mechanism 10 is generally provided with at least one pair or more.

The primary press roller mechanism 10 may be provided as a pair of press rollers, or may be provided as a plurality of pairs of press rollers, which may realize stepwise thinning of the tobacco sheet.

For example, three pairs of primary press roller mechanisms 10 can sequentially roll tobacco materials to form a first tobacco sheet with uniform thickness, and the effect of step-by-step rolling can be realized by arranging the three pairs of primary press roller mechanisms 10, so that the primary press roller mechanisms 10 are prevented from being stressed excessively.

The first tobacco sheet may be transported to the final stage press roller mechanism 20 via a conveyor belt (not shown), or the first tobacco sheet rolled by the first press roller mechanism 10 may enter the final stage press roller mechanism 20 by itself and be rolled by the final stage press roller mechanism 20 to form the second tobacco sheet 02, with the first press roller mechanism 10 being at the same level as the final stage press roller mechanism 20 and with a sufficiently small distance in the horizontal direction between the first press roller mechanism 10 and the final stage press roller mechanism 20.

The scoring mechanism 40 is positioned between the final stage press roller mechanism 20 and the stretching press roller mechanism 30; the scoring mechanism 40 scoring the second tobacco sheet 02 formed by the rolling by the final pressing roller mechanism 20 to form a third tobacco sheet 03 having a mesh 031; the cutting refers to cutting the second tobacco sheet 02 into a plurality of hollowed-out meshes 031.

In the present application, the movement speed of the stretching press roller mechanism 30 is made greater than the movement speed of the final press roller mechanism 20, and the third tobacco sheet 03 having the mesh 031 may be transported into the stretching press roller mechanism 30 via a conveyor belt (not shown), and the stretching press roller mechanism 30 stretches the third tobacco sheet 03 to form the mesh-like tobacco sheet 04 because the movement speed of the stretching press roller mechanism 30 is made greater than the movement speed of the final press roller mechanism 20. The moving speed of the stretching press roller mechanism 30 is 2 to 5 times the moving speed of the final press roller mechanism 20.

Thus far, the tobacco sheet is not a whole sheet but a net-shaped tobacco sheet.

Finally, the netlike tobacco sheet is cut to form irregular tobacco shreds, and more gaps are formed among the finally formed irregular tobacco shreds, so that the rolling density of cigarettes is reduced, the smoking condition is improved, the smoking feeling of the cigarettes is improved, and the quality of the cigarettes is stabilized.

In other possible embodiments, the irregular cut filler may not comprise any closed mesh, that is to say the mesh tobacco sheet is cut into irregular cut filler without closed lines. The irregular cut tobacco is rolled into cigarettes, and the cigarettes have good filling density and good smoking effect.

Referring to fig. 1 and 2, the scoring mechanism 40 includes a plurality of cutter heads 41 and a driving device 42, and the driving device 42 reciprocates the cutter heads 41 in a vertical direction (Z direction shown in fig. 1 or 2) and toward the second tobacco sheet 02.

Referring to fig. 2 and 3, a plurality of cutter heads 41 are arranged at intervals in the width direction of the second tobacco sheet 02. The plurality of cutter heads 41 reciprocate simultaneously in the vertical direction and toward the second tobacco sheet 02, so that a plurality of hollowed-out meshes 031 can be simultaneously cut out on the second tobacco sheet 02, and the hollowed-out meshes 031 are also arranged at intervals in the width direction (Y direction shown in fig. 3).

Referring to fig. 2, any adjacent two of the tips 41 are spaced apart by a distance of 2mm to 3mm in the width direction (Y direction shown in fig. 2).

With continued reference to fig. 2, each of the cutter heads 41 extends in the width direction (Y direction shown in fig. 2), and each of the cutter heads 41 extends in the width direction by a length of 5mm to 15mm. This length is the length of the hollowed-out mesh 031 (shown in fig. 3) cut by the cutter head 41.

Referring to fig. 1 and 3, the tobacco shred preparing apparatus 00 further comprises an anvil roller 50, wherein the anvil roller 50 supports the second tobacco sheet 02 formed by rolling by the final pressing roller mechanism 20, so that when the second tobacco sheet 02 moves onto the anvil roller 50, the cutter head 41 reciprocates towards the second tobacco sheet 02 along the vertical direction (the Z direction as shown in fig. 1), and a plurality of hollowed meshes 031 can be simultaneously cut on the second tobacco sheet 02. And the anvil roll 50 is rotatably movable and has a surface linear velocity corresponding to the discharge velocity of the second tobacco sheet 02 formed after rolling by the final press roll mechanism 20.

The second tobacco sheet 02 is scored by a scoring mechanism 40 at intervals of 1.5mm-2.0mm in the horizontal direction (X direction as shown in fig. 3).

The plurality of cutter heads 41 are arranged in at least two rows at intervals in the width direction, and the adjacent two rows of cutter heads 41 are arranged in a staggered manner. In other possible embodiments, the plurality of cutter heads 41 are arranged in a two-row arrangement with the first row being closer to final press roll mechanism 20 than the second row. Each cutter head 41 of the first row and each cutter head 41 of the second row are arranged in a staggered manner, the plurality of cutter heads 41 of the first row mark a plurality of hollowed-out meshes 031 of the first row on the second tobacco sheet 02 (fig. 3 can be combined), the plurality of cutter heads 41 of the second row mark a plurality of hollowed-out meshes 031 of the second row on the second tobacco sheet 02, and each mesh 031 of the first row is not aligned with each mesh 031 of the second row.

The tobacco shred preparing device also comprises a shoveling device (not shown in the figure), wherein the shoveling device shovels the net-shaped tobacco sheets away from the stretching press roller mechanism 30.

The tobacco shred preparing device also comprises a drying mechanism (not shown in the figure) for drying the netlike tobacco sheets to a water content of 2-12 wt%.

Preferably, the drying mechanism further dries the mesh-shaped tobacco sheet to a water content of 5-10 wt%, so as to form the mesh-shaped tobacco sheet with proper water content. The meshed tobacco sheet with the water content of 5-10wt% has good fuming effect, generally speaking, the meshed tobacco sheet with the water content of less than 2wt% is too dry, has poor folding resistance, is easy to crush, and has the water content of higher than 12wt% after being manufactured into cigarettes, more water vapor is generated by heating, more heat is released after condensation, and the smoke temperature is higher.

The tobacco shred preparing device further comprises a cutting device (not shown in the figure), wherein the cutting device cuts the mesh tobacco sheets dried by the drying mechanism along the width direction (shown as Y direction in figure 3) and the horizontal direction (shown as X direction in figure 3) to form irregular tobacco shreds.

The resulting cut tobacco is no longer straight, but rather is branched or "branched" irregular cut tobacco, which may take on a "K" or "Y" shape or other shape. The cut filler may also be cut filler that does not contain any closed mesh, i.e., the mesh tobacco sheet is cut into cut filler that has no closed lines. The irregular cut tobacco is rolled to form a cigarette, and the cigarette has good filling density, good smoking effect, good filling performance and easy existence of more gaps among the irregular cut tobacco.

The invention also provides a tobacco shred preparing method, which prepares tobacco shreds by utilizing a tobacco shred preparing device 00, wherein the preparing device comprises a primary compression roller mechanism 10, a final compression roller mechanism 20, a stretching compression roller mechanism 30 and a scribing mechanism 40 which are sequentially arranged in the horizontal direction, and the preparing method comprises the following steps:

Primary rolling: the primary compression roller mechanism 10 is used for rolling tobacco materials to form a first tobacco sheet with uniform thickness;

Final stage rolling: the final pressing roller mechanism 20 is used for rolling the first tobacco sheet to form a second tobacco sheet 02;

scribing: the scoring mechanism 40 scoring the second tobacco sheet 02 to form a third tobacco sheet 03 having a mesh 031;

Stretching and rolling: the stretching press roller mechanism 30 is used to stretch the third tobacco sheet 03 to form a mesh-like tobacco sheet.

Wherein, in the stretching and rolling step, the third tobacco sheet 03 is stretched to 2-5 times of the original length to form a mesh-like tobacco sheet.

The stretching and rolling step is followed by a shoveling step that shovels the reticulated tobacco sheet away from the stretching and pressing roller mechanism 30. And (3) carrying out a drying step after the shoveling step, wherein the drying step enables the netlike tobacco sheets to be dried until the moisture content is 2-12 wt%.

Preferably, the drying step further dries the mesh-like tobacco sheet to a moisture content of 5wt% to 10wt% to form a mesh-like tobacco sheet with a suitable moisture content. The meshed tobacco sheet with the water content of 5-10wt% has good fuming effect, generally speaking, the meshed tobacco sheet with the water content of less than 2wt% is too dry, has poor folding resistance, is easy to crush, and has the water content of higher than 12wt% after being manufactured into cigarettes, more water vapor is generated by heating, more heat is released after condensation, and the smoke temperature is higher.

And cutting the mesh tobacco sheet dried in the drying step along the width direction and the horizontal direction of the mesh tobacco sheet to form irregular cut tobacco.

The resulting cut tobacco is no longer straight, but rather is branched or "branched" irregular cut tobacco, which may take on a "K" or "Y" shape or other shape. The cut filler may also be cut filler that does not contain any closed mesh, i.e., the mesh tobacco sheet is cut into cut filler that has no closed lines. The irregular cut tobacco is rolled to form a cigarette, and the cigarette has good filling density, good smoking effect, good filling performance and easy existence of more gaps among the irregular cut tobacco.

Examples

Crushing tobacco materials into powder with the average particle size of 60 mu m, and carrying out strong stirring and pulping on 30 parts of water, 10 parts of glycerol, 1 part of wood pulp fiber and 1 part of sodium carboxymethyl cellulose to obtain wet materials; uniformly mixing the wet material with 40 parts of tobacco powder to form a bulk or granular shape; feeding the materials into a screw extruder, extruding, further uniformly mixing and removing the internal pores of the materials; the extruded material sequentially passes through three primary compression roller mechanisms to form a first tobacco sheet, the first tobacco sheet passes through a final compression roller mechanism to form a second tobacco sheet with the thickness of 0.16mm, the second tobacco sheet is cut in the up-down reciprocating motion of the cutter heads, the second tobacco sheet leaves break points or cuts out a plurality of hollowed meshes, the length of each break point is 15mm, so to speak, the length of each cutter head extending along the width direction is 15mm, the second tobacco sheet is cut by the cutter heads at intervals of 2.0mm in the running direction, or is cut by the cutter heads at intervals of 2.0mm in the horizontal direction to form a third tobacco sheet with meshes, in the stretching and rolling step, the third tobacco sheet is stretched to 2 times of the original length and forms a net-shaped tobacco sheet with the thickness of 0.16mm, the net-shaped tobacco sheet is shoveled off from the stretching compression roller mechanism, and then the net-shaped tobacco sheet enters a tunnel oven. Heating and dewatering to water content of 6%, and cutting the mesh-shaped tobacco sheet into irregular tobacco shreds of 15 mm-15 mm along the width direction and the horizontal direction by a cutting device, wherein the irregular tobacco shreds can form a K shape or a Y shape or other shapes.

The density of the cigarette measured after the irregular cut tobacco is rolled into the cigarette is 0.5g/cm ³, the roundness and hardness of the cigarette are good, the smoking is smooth, the smoking condition is improved, and the smoking feeling of the cigarette is improved.

Comparative example

Crushing tobacco materials into powder with the average particle size of 60 mu m, and carrying out strong stirring and pulping on 30 parts of water, 10 parts of glycerol, 1 part of wood pulp fiber and 1 part of sodium carboxymethyl cellulose to obtain wet materials; uniformly mixing the wet material with 40 parts of tobacco powder to form a bulk or granular shape; feeding the materials into a screw extruder, extruding, further uniformly mixing and removing the internal pores of the materials; the extruded material is rolled in four stages to form a first tobacco sheet with the thickness of 0.16mm, and then the first tobacco sheet is heated and dehydrated to the water content of 6%, and the sheet is introduced into a shredder to be cut into reconstituted tobacco shreds with the width of 1mm and the length of about 15 mm.

The density of the cigarettes measured after the reconstituted tobacco shreds are rolled into cigarettes is 0.58g/cm ³, the roundness and hardness of the cigarettes are good, but the cigarettes are not smooth in smoking, the smoking resistance is large, and the smoking effect is poor.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the invention with reference to specific embodiments, and it is not intended to limit the practice of the invention to those descriptions. Various changes in form and detail may be made therein by those skilled in the art, including a few simple inferences or alternatives, without departing from the spirit and scope of the present invention.

Claims (17)

1. A tobacco shred preparation device, which is characterized by comprising: a primary compression roller mechanism, a final compression roller mechanism, a stretching compression roller mechanism and a notch cutting mechanism which are sequentially arranged along the horizontal direction,

The primary compression roller mechanism carries out rolling on tobacco materials to form a first tobacco sheet with uniform thickness;

The first tobacco sheet is rolled by the final-stage pressing roller mechanism to form a second tobacco sheet; the scoring mechanism is positioned between the final-stage compression roller mechanism and the stretching compression roller mechanism; the scoring mechanism scoring the second tobacco sheet to form a third tobacco sheet with meshes;

The movement speed of the stretching press roller mechanism is larger than that of the final press roller mechanism, and the stretching press roller mechanism is used for stretching the third tobacco sheet to form the net-shaped tobacco sheet.

2. The tobacco shred preparing apparatus as claimed in claim 1, wherein the primary press roller mechanism is provided with at least one pair.

3. The tobacco shred preparing apparatus as claimed in claim 1, wherein the shredding mechanism includes a plurality of cutter heads and a driving device which drives the cutter heads to reciprocate in a vertical direction and toward the second tobacco sheet.

4. A tobacco shred preparing apparatus as claimed in claim 3, wherein a plurality of said cutter heads are arranged at intervals in the width direction of said second tobacco sheet.

5. The tobacco shred preparing apparatus as claimed in claim 4, wherein the distance between any two adjacent cutter heads in the width direction is 2mm to 3mm.

6. The tobacco shred preparing apparatus as claimed in claim 4, wherein each of the cutter heads extends in the width direction, and each of the cutter heads extends in the width direction by a length of 5mm to 15mm.

7. The tobacco shred preparing apparatus as claimed in claim 3, further comprising an anvil roller disposed in the vertical direction toward the scoring mechanism, and wherein the cutter head reciprocates in the vertical direction toward the second tobacco sheet when the second tobacco sheet moves onto the anvil roller.

8. A cut tobacco preparation apparatus according to claim 3, wherein the second tobacco sheet is scored by the scoring mechanism at intervals of 1.5mm to 2.0mm in the horizontal direction.

9. The tobacco shred preparing apparatus as claimed in claim 4, wherein a plurality of the cutter heads are arranged at intervals in the width direction in at least two rows, and the cutter heads in adjacent two rows are arranged in a staggered manner.

10. The tobacco shred preparation apparatus of claim 1, further comprising a shoveling device which shovels the mesh tobacco sheet away from the stretching press roller mechanism.

11. The tobacco shred preparing apparatus of claim 4, further comprising a drying mechanism for drying the mesh tobacco sheets to a moisture content of 2% to 12% by weight.

12. The tobacco shred preparing apparatus as claimed in claim 11, further comprising a cutting device for cutting the mesh tobacco sheet dried by the drying mechanism in the width direction and the horizontal direction to form irregular tobacco shreds.

13. The preparation method of the cut tobacco is characterized by utilizing a preparation device of the cut tobacco to prepare the cut tobacco, wherein the preparation device comprises a primary compression roller mechanism, a final compression roller mechanism, a stretching compression roller mechanism and a cutting mechanism which are sequentially arranged in the horizontal direction, and the preparation method comprises the following steps of:

Primary rolling: the primary compression roller mechanism is used for rolling tobacco materials to form a first tobacco sheet with uniform thickness;

Final stage rolling: the final pressing roller mechanism is used for rolling the first tobacco sheet to form a second tobacco sheet;

scribing: the scoring mechanism scoring the second tobacco sheet to form a third tobacco sheet with meshes;

Stretching and rolling: the stretching press roller mechanism is used for stretching the third tobacco sheet to form a netlike tobacco sheet.

14. The method of producing cut tobacco according to claim 13, wherein in the stretching and rolling step, the third tobacco sheet is stretched to 2 to 5 times the original length to form the mesh-like tobacco sheet.

15. The method of making cut tobacco according to claim 13, wherein the stretching and rolling step is followed by a shoveling step of shoveling the reticulated tobacco sheet away from the stretching and pressing roller mechanism.

16. The method of producing cut tobacco according to claim 15, wherein the step of shoveling is followed by a step of drying which dries the mesh-like tobacco sheet to a moisture content of 2 to 12wt%.

17. The method of producing cut tobacco according to claim 16, wherein the step of drying is followed by a cutting step of cutting the mesh tobacco sheet dried by the step of drying in the width direction and the horizontal direction of the mesh tobacco sheet to form irregular cut tobacco.