阅读说明：本技术 一种形成均质化烟草薄片的方法 (A method of forming a homogenized tobacco sheet ) 是由 王小飞 马秀舫 孙健 邓滏炎 于 2020-05-20 设计创作，主要内容包括：本发明涉及一种形成均质化烟草薄片的方法,该方法包括沿第一方向输送辊压烟草薄片；换向；沿第二方向输送辊压烟草薄片。本发明通过沿不同方向对烟草薄片进行输送辊压,增加了烟草薄片纵横向的拉伸强度,使烟草薄片纵横向的应力均衡,从而大幅提升烟草薄片的加工性能。(The present invention relates to a method of forming a homogenized tobacco sheet comprising conveying a rolled tobacco sheet in a first direction; reversing; the rolled tobacco sheet is conveyed in a second direction. According to the invention, the tobacco sheets are conveyed and rolled in different directions, so that the longitudinal and transverse tensile strength of the tobacco sheets is increased, the longitudinal and transverse stress of the tobacco sheets is balanced, and the processing performance of the tobacco sheets is greatly improved.)

1. A method of forming a homogenized tobacco sheet,

conveying the rolled tobacco sheet in a first direction;

reversing;

the rolled tobacco sheet is conveyed in a second direction.

2. Method of forming homogenized tobacco sheet according to claim 1, characterized in that it comprises in particular the steps of:

s1, conveying the rolled tobacco sheet along a first direction;

s2, carrying out lamination treatment on the rolled tobacco sheets;

s3, reversing and conveying the tobacco sheets;

and S4, conveying the rolled tobacco sheet along a second direction.

3. The method of forming homogenized tobacco sheet according to claim 2 further comprising, in step S2, cutting the tobacco sheet in a direction transverse to the first direction to obtain tobacco sheets of desired stack length, and stacking the tobacco sheets of desired stack length.

4. Method of forming homogenized tobacco sheet according to claim 2, characterized in that in step S2, the successive tobacco sheets are directly laminated.

5. A method of forming homogenized tobacco sheet according to claim 2,

in step S1, the rolled tobacco sheet is conveyed in a first direction a plurality of times;

in step S4, the rolled tobacco sheet is conveyed a plurality of times in the second direction.

6. A method of forming homogenized tobacco sheet according to any of claims 1-5, characterized in that said first direction intersects said second direction.

7. A method of forming homogenized tobacco sheet according to any of claims 2-5,

between the step S1 and the step S2, the method further comprises: s11, knurling the tobacco sheet;

and/or, after the step S4, the method further comprises the following steps: and S5, knurling the tobacco sheet.

8. A method of forming homogenized tobacco sheet according to claim 2 further comprising the step of dusting tobacco sheet, after step S1 prior to step S4, the dusting including dusting flavor particles and/or dusting powder particles.

9. Method of forming homogenized tobacco sheet according to claim 8, characterized in that the tobacco sheets are dusted before or during lamination, and flavor particles and/or tobacco dust particles are dusted onto the surface of each layer of tobacco sheet.

10. A method of forming homogenized tobacco sheet according to claim 8 in which the tobacco sheet is dusting after the reversing of the conveying of the tobacco sheet, and flavor particles and/or tobacco dust particles are dusted onto the surface of the laminated tobacco sheet.

Technical Field

The invention relates to the technical field of processing of novel heating cigarette raw materials, in particular to a method for forming homogenized tobacco sheets.

Background

Along with the development of the times, the attention of people to health is increased year by year, and the harm of the traditional tobacco is highly valued by people. In recent years, new heated cigarette technology has developed rapidly. The tobacco shreds used by the novel heating cigarette are different from the traditional tobacco shreds, and the tobacco rod of the novel cigarette must use the strip-shaped tobacco sheets which are arranged orderly in the longitudinal direction. The raw material of the tobacco sheet is derived from tobacco, and is the same as the material basis of natural tobacco leaves. Accordingly, related art regarding tobacco sheets has been produced on the market.

In order to increase the tensile strength of the tobacco sheets and improve the processability, the main domestic and foreign tobacco sheet reconstruction methods, whether the dry and wet paper making method or the thick liquid method, add a certain proportion of adhesive and wood pulp fiber in the raw materials in different degrees, but the larger the proportion of the additive is, the poorer the smoking taste of the cigarettes is.

The technology for reproducing the tobacco sheets by the rolling method strives to zero-add wood pulp fibers on the basis of improving and optimizing the process, so that the proportion of tobacco in the tobacco sheets is improved. However, due to the physical properties of tobacco itself, the high tobacco mass has a much lower toughness than other materials of the same moisture content. Therefore, it is necessary to search for a new processing method to solve the problem of poor processability of reconstituted tobacco sheets by the roll-compaction method.

The present invention has been made in view of this situation.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a method for forming a homogenized tobacco sheet, wherein the tobacco sheet is rolled in different directions, so that the longitudinal and transverse stresses of the tobacco sheet are uniform, the homogenized tobacco sheet is formed, and the processing performance of the tobacco sheet is improved.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method of forming a homogenized tobacco sheet comprising

Conveying the rolled tobacco sheet in a first direction;

reversing;

the rolled tobacco sheet is conveyed in a second direction.

Further, the method specifically comprises the following steps:

s1, conveying the rolled tobacco sheet along a first direction;

s2, carrying out lamination treatment on the rolled tobacco sheets;

s3, reversing and conveying the tobacco sheets;

and S4, conveying the rolled tobacco sheet along a second direction.

Further, step S2 includes cutting the tobacco sheet in a direction intersecting the first direction to obtain a tobacco sheet having a length corresponding to the stacking requirement, and stacking the tobacco sheets having the length corresponding to the stacking requirement.

Further, in step S2, the continuous tobacco sheets are directly laminated.

Further, in step S1, the rolled tobacco sheet is conveyed a plurality of times in the first direction;

in step S4, the rolled tobacco sheet is conveyed a plurality of times in the second direction.

Further, the first direction intersects the second direction.

Further, between the step S1 and the step S2, the method further includes: s11, knurling the tobacco sheet;

and/or, after the step S4, the method further comprises the following steps: and S5, knurling the tobacco sheet.

Further, the method comprises a step of dusting the tobacco sheet, wherein the step of dusting is performed after the step S1 before the step S4, and the step of dusting comprises dusting flavor particles and/or dusting powder particles.

Furthermore, before or during the lamination of the tobacco sheets, the powder is scattered, and the flavor particles and/or the tobacco powder particles are scattered on the surfaces of the tobacco sheets.

Further, after the tobacco sheets are conveyed in a reversing way, the tobacco sheets are dusted, and flavor particles and/or tobacco powder particles are dusted on the surfaces of the stacked tobacco sheets.

After the technical scheme of the invention is adopted, the following beneficial effects are brought:

according to the method for forming the homogenized tobacco sheets, the tobacco sheets are conveyed and rolled in different directions, so that the longitudinal and transverse tensile strength of the tobacco sheets is increased, the longitudinal and transverse stress of the tobacco sheets is balanced, and the processing performance of the tobacco sheets is greatly improved.

According to the method for forming the homogenized tobacco sheet, the tobacco sheet is laminated by the laminating device and then rolled again along the other direction, so that the longitudinal and transverse stresses of the tobacco sheet are balanced, and the tobacco sheet which is damaged or has uneven edge thickness and is formed by rolling can be repaired, so that the uniform tobacco sheet is formed.

Drawings

FIG. 1: a flow chart of a method of forming a homogenized tobacco sheet is provided in an embodiment of the present invention.

FIG. 2: the prior art is a schematic structural diagram of equipment for rolling tobacco sheets.

FIG. 3: a schematic front view of an apparatus for use in a method of forming homogenized tobacco sheet according to embodiments of the present invention is provided.

FIG. 4: a top view of an apparatus for use in a method of forming homogenized tobacco sheet according to embodiments of the present invention is provided.

Reference numerals: 1. a stirring tank; 2. a first conveying and rolling device; 21. a first belt conveyor; 22. a first roller press; 23. a second belt conveyor; 24. a second calender roll; 25. a third belt conveyor; 26. a third roller press; 27. a fourth belt conveyor; 3. a laminating device; 31. buffering the trolley; 32. a material distribution trolley; 33. a control mechanism; 34. an output mechanism; 341. an output belt; 4. a cutting device; 5. a powder spreader; 6. a second conveying and rolling device; 61. a fourth roll press; 62. a fifth roller press; 63. sixth roll squeezer

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Generally, in the technology of reproducing tobacco sheets by a rolling method, firstly, a certain mesh of tobacco powder, a certain proportion of humectant, water and perfume are put into a stirring tank 1, or other raw materials different from the formula are put into the stirring tank 1, and are stirred and mixed to form tobacco clusters, the tobacco clusters are conveyed to a roller press by a conveyor belt, the roller press rolls the tobacco clusters into sheets, in order to obtain the tobacco sheets with certain tensile strength, the tobacco sheets can be rolled in multiple stages, as shown in figure 2, the tobacco clusters coming out of the stirring tank 1 are conveyed to a first roller press 22 by a first conveyor belt 21 to be rolled to form the tobacco sheets, the tobacco sheets are conveyed to a second roller press 24 by a second conveyor belt 23 to be rolled again to enhance the tensile strength, and then the tobacco sheets are conveyed to a third roller 26 by a third conveyor belt 25 to be rolled for the third time, and after rolling, the rolled steel sheets are conveyed to the next working procedure through a fourth conveying belt machine 27. The rolling times of the tobacco sheets are set according to actual needs. The tobacco sheets are rolled for multiple times, the rolling directions are the same, only the longitudinal tensile strength of the tobacco sheets is enhanced, the transverse tensile strength of the tobacco sheets is not correspondingly enhanced, so that the longitudinal and transverse stresses of the tobacco sheets are greatly different, and the tobacco sheets are not beneficial to subsequent material receiving and discharging, rewinding, slitting and shredding. After the longitudinal tensile strength of the tobacco sheet is enhanced, the transverse tensile strength of the tobacco sheet also needs to be enhanced, so that a homogenized tobacco sheet can be formed, and the processing performance of the tobacco sheet is improved.

The present invention provides a method of forming a homogenized tobacco sheet comprising:

conveying the rolled tobacco sheet in a first direction;

reversing;

the rolled tobacco sheet is conveyed in a second direction.

In the embodiment of the invention, the longitudinal and transverse stresses of the tobacco sheet are balanced mainly by rolling the tobacco sheet along two different directions. The method specifically comprises the following steps:

s1, conveying the rolled tobacco sheet along a first direction;

s2, carrying out lamination treatment on the rolled tobacco sheets;

s3, reversing and conveying the tobacco sheets;

and S4, conveying the rolled tobacco sheet along a second direction.

Specifically, the first conveying roller device 2 conveys the rolled tobacco sheets along a first direction to enable the tobacco sheets to have certain longitudinal tensile strength, and the second conveying roller device 6 conveys the rolled tobacco sheets along a second direction to enable the tobacco sheets to have certain transverse tensile strength, wherein the first direction refers to the direction of the longitudinal tensile strength of the tobacco sheets, the second direction refers to the direction of the transverse tensile strength of the tobacco sheets, namely, the first direction is a longitudinal direction, and the second direction is a transverse direction. As shown in fig. 3 and 4, the tobacco mass is conveyed to the first roller press 22 through the first belt conveyor 21, rolled into a tobacco sheet, and then conveyed to the second belt conveyor 23, the second roller press 24, the third belt conveyor 25, the third roller press 26, the fourth belt conveyor 27, the buffer trolley 31 and the distribution trolley 32 in sequence, which are conveyed along the first direction; the first roller press 22 rolls the tobacco mass to form a tobacco sheet, and the second and third roller presses 24 and 26, respectively, continue to roll the tobacco sheet, which is in a first direction. Similarly, the rolled tobacco sheet is transported in the second direction from the output belt 341 to the fourth roller press 61, the fifth roller press 62, and the sixth roller press 63.

According to the invention, the tobacco sheets are subjected to lamination treatment, so that the tobacco sheets stop running longitudinally, and the transverse rolling of the tobacco sheets is guaranteed subsequently. Specifically, after the rolled tobacco sheets are conveyed in the first direction, the tobacco sheets are conveyed to the laminating device 3, and due to the characteristics of the laminating device 3, after the laminating action is performed, the tobacco sheets are laid on the output belt 341 of the output mechanism 34 of the laminating device 3 in the longitudinal direction, and the running direction of the output belt 341 of the laminating device 3 is intersected with the longitudinal direction, that is, the output belt 341 of the laminating device 3 runs in the transverse direction, so that the tobacco sheets are conveyed in a reverse direction, and the tobacco sheets can be subsequently rolled in the transverse direction. The second conveying roller device 6 can be installed according to specific sites, and if the site is large, the second conveying roller device can be installed along the operation direction of the output mechanism 34 of the laminating device 3, as shown in fig. 4, the direction of the first conveying roller device 2 is perpendicular to the direction of the second conveying roller device 6, that is, the first direction is intersected with the second direction; if the field is small, the device can be installed along the direction parallel to the direction of the first conveying roller device 2, and only a turning belt conveyor is arranged between the output mechanism 34 of the laminating device 3 and the second conveying roller device 6.

In S1, the tobacco sheet may be subjected to one or more conveying and rolling operations along the first direction according to actual needs, where the multiple conveying and rolling operations include two or more conveying and rolling operations, and preferably, the multiple conveying and rolling operations are performed to improve the longitudinal tensile strength of the tobacco sheet. Similarly, in S4, the tobacco sheet may be subjected to one or more conveying and rolling operations along the second direction according to actual needs, and preferably, the conveying and rolling operations are performed multiple times, so as to improve the transverse tensile strength of the tobacco sheet.

The stacking apparatus 3 may be a horizontal stacking apparatus 3 or a dicing stacking apparatus 3, and the dicing stacking apparatus 3 will be described as an example.

The slicing type laminating device 3 comprises a buffer trolley 31, a cloth trolley 32, an output mechanism 34 and a control mechanism 33, wherein the buffer trolley 31 is arranged above the cloth trolley 32, the output mechanism 34 is arranged below the output end of the cloth trolley 32, the running direction of the output mechanism 34 is intersected with the running direction of the cloth trolley 32, the two running directions are mutually perpendicular in the preferred scheme, and the control mechanism 33 controls the running of the buffer trolley 31, the cloth trolley 32 and the output mechanism 34. The tobacco sheets are rolled by the third roller press 26 and then are conveyed to the conveying belt of the buffer trolley 31, the buffer trolley 31 reciprocates to convey the tobacco sheets to the conveying belt of the distribution trolley 32, the distribution trolley 32 reciprocates to convey the tobacco sheets to the output belt 341 of the output mechanism 34, and the running speed of the conveying belt of the distribution trolley 32 is higher than that of the output belt 341 of the output mechanism 34, so that the lamination of the tobacco sheets is realized. Buffer carriage 31 is mainly used for buffering, the speed of the conveyor belt can be determined according to the ratio of the travel of the buffer carriage 31 to the travel of the distribution carriage 32, and generally, the travel L1 of the buffer carriage 31 can be set to be one fourth of the travel L2 of the distribution carriage 32, i.e., L1 is L2/4. The material distribution trolley 32 has the same reciprocating speed as the third calender 26.

Alternatively, the buffer carriage 31 may be omitted and the tobacco sheets may be rolled by the third calender 26 and then directly fed to the distribution carriage 32.

In step S2, after the tobacco sheets are conveyed to the stacking device 3, the tobacco sheets may be stacked by the stacking device 3, or the conveying direction of the tobacco sheets may not be changed, for example, the cutting device 4 is disposed above the material distribution trolley 32, the tobacco sheets are cut into tobacco sheets with a desired length along the transverse direction, and the running speed of the output belt 341 is changed so that the two tobacco sheets are laid on the output belt 341 in a manner of being immediately adjacent to each other. In an embodiment of the invention, the tobacco sheets are laminated using a laminating device 3. After the tobacco sheets are laminated, the laminated tobacco sheets are rolled along the second direction, so that the defects of the tobacco sheets can be effectively repaired, and the uniform tobacco sheets are formed.

In the embodiment of the present invention, the tobacco sheets to be laminated may take two different forms, one is each a separate tobacco sheet which is cut off, and the other is each a continuous body of the tobacco sheets without cut-off in the middle. That is, step S2 further includes cutting the tobacco sheet in a direction intersecting the first direction to obtain a tobacco sheet having a length corresponding to the stacking requirement, and stacking the tobacco sheets having the length corresponding to the stacking requirement, or step S2 includes stacking continuous tobacco sheets as they are.

Specifically, before stacking the tobacco sheets, as shown in fig. 3, the tobacco sheets are cut in a direction intersecting the first direction on the distribution cart 32 or the fourth belt conveyor 27 to obtain tobacco sheets having a length required for stacking, and the tobacco sheets having the required length for stacking are stacked, or continuous tobacco sheets are stacked without cutting the tobacco sheets, and the tobacco sheets are arranged in a zigzag manner on the output belt 341 in an overlapping manner.

In an embodiment of the invention, the tobacco sheet is also knurled after the roller-pressing:

between the step S1 and the step S2, the method further comprises: s11, knurling the tobacco sheet;

and/or, after the step S4, the method further comprises the following steps: and S5, knurling the tobacco sheet.

The conveying and rolling of the tobacco sheets along the first direction and the second direction are all multi-stage conveying and rolling, and the knurling is arranged in the last stage of rolling of the multi-stage conveying and rolling. Specifically, a pattern is provided on one of the press rolls of the third roller press 26 of the first conveying roller press device 2, a pattern is also provided on one of the press rolls of the sixth roller press 63 of the second conveying roller press device 6, and when the tobacco sheets are rolled by the third roller press 26 and the sixth roller press 63, the pattern is formed on the surface of the tobacco sheets during the rolling process due to the pattern provided on one of the press rolls. So, after the compression roller roll-in that is provided with the decorative pattern, the surface area of tobacco sheet increases to increase the superficial area that a cigarette heated, make the gas permeability of cigarette increase, reduce the resistance to smoking of cigarette, and then solve the light problem of cigarette taste when just smoking.

In an embodiment of the present invention, there is further provided a step of dusting the tobacco sheet, the step of dusting comprising dusting flavor particles and/or dusting powder particles after step S1 prior to step S4. By scattering the flavor particles with different formulas and/or the tobacco powder particles with different formulas, the tobacco sheets with different formulas can be produced by one production line, the field is saved, the equipment is saved, the utilization rate of the equipment is improved, and the economic benefit is improved.

The different powder spreading time sequences produce different effects. For example, before or during the lamination of the tobacco sheets, powder is scattered, and spice particles and/or tobacco powder particles are scattered on the surfaces of the tobacco sheets of all layers, and after rolling, the spice particles and/or the tobacco powder particles are integrated with the tobacco sheets, so that the material quality of the tobacco sheets is more uniform; or, after the tobacco sheets are conveyed in a reversing way, the tobacco sheets are dusted, and the flavor particles and/or the tobacco powder particles are dusted on the surfaces of the laminated tobacco sheets, so that after rolling, the flavor particles and/or the tobacco powder particles are firmly adhered to the surface layers of the tobacco sheets, and the tobacco fragrance is released more fully at the front end of smoking; moreover, the two dusting powders can increase the air permeability of the tobacco sheet, reduce the suction resistance of the tobacco product and further facilitate the smoking of the tobacco product.

In an embodiment of the invention, the tobacco sheets are dusted by means of a duster 5. The powder spreader 5 is arranged above the middle part of the distributing trolley 32, when the tobacco sheets run along with the conveyer belt of the distributing trolley 32, the powder spreader 5 spreads the flavor particles and/or the tobacco powder particles on the surfaces of the tobacco sheets, or the powder spreader 5 is arranged above the front end of the distributing trolley 32 and above the beginning end of the output belt 341 of the laminating device 3, during the laminating process, the powder spreader 5 spreads the flavor particles and/or the tobacco powder particles on the surfaces of each layer of the tobacco sheets, or the powder spreader 5 is arranged above the middle part of the output belt 341 of the laminating device 3, and spreads the flavor particles and/or the tobacco powder particles on the laminated tobacco sheets.

Different dusting modes can be adopted to dust the tobacco sheets according to actual needs, for example, a mode of combining roller brushing and vibration can be adopted to dust the tobacco sheets. The powder scattering machine 5 is provided with two motors, one motor drives the brush roll to rotate and extrude the flavor particles and/or the tobacco powder particles to be sprayed out of the meshes, and the other motor is a vibrating motor and drives the meshes to vibrate at a small amplitude and a high frequency, so that the flavor particles and/or the tobacco powder particles are uniformly scattered on the tobacco sheets.

The tobacco sheets can also be dusted by adopting a mode of combining a pressure air injection spraying method and a vibration screening method. The feed bin that holds material fragrant granule and/or tobacco powder granule sets up in duster 5 top, and the material in the feed bin draws the nozzle blowout to fall on the shale shaker of duster 5 through pressing empty, and the shale shaker makes linear motion under the vibrating motor effect of two parallel placements to make material fragrant granule and/or tobacco powder granule evenly spread and spill on the tobacco sheet.

According to the invention, the tobacco sheets are rolled along the longitudinal direction and the transverse direction, so that the extensibility difference of the tobacco sheets in the longitudinal direction and the transverse direction is reduced, and the tobacco sheets after subsequent baking are smoother; the tobacco sheets are rolled longitudinally and transversely for multiple times, so that the longitudinal and transverse tensile strength of the tobacco sheets is increased, and the longitudinal and transverse stress of the tobacco sheets is balanced, so that the processing performance of the tobacco sheets is greatly improved, and the subsequent emptying, rewinding, slitting and shredding are facilitated; moreover, after the tobacco sheets are longitudinally and transversely rolled for multiple times, the tobacco sheets are more uniform, so that the stability of smoke during smoking is guaranteed.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.