Cigarette core layering device

Abstract

The utility model belongs to the technical field of cigarette separation, and particularly provides a cigarette core layering device. The cigarette core layering device comprises a base, a containing cylinder arranged on the base and used for containing cigarette cores and a first guide cylinder capable of being coaxially matched with the containing cylinder, an inner hole of the first guide cylinder is smaller than an inner hole of the containing cylinder, and the first guide cylinder is provided with a first slitting cylinder capable of being in corresponding guide fit with the inner hole of the first guide cylinder. One end of the first slitting cylinder is used for inserting and slitting a cigarette core so as to correspondingly separate the outermost layer of the cigarette core, and the size difference between inner holes of the accommodating cylinder and the first guide cylinder is matched with the wall thickness size of the designed outermost layer. When a columnar object is layered, the slitting cylinder is cut into a cigarette core, in the process, only the slitting cylinder moves, the inner layer after slitting enters the slitting cylinder, the situation that the cigarette core on the inner layer drives the adjacent cigarette core to move is avoided, and a better layering effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cigarette separation, and particularly relates to a cigarette core layering device. Background Art

[0002] A heated cigarette refers to a cigarette that directly heats the cigarette core through a heating element, so that the cigarette core undergoes processes such as pyrolysis, distillation and condensation to generate an aerosol for consumers to inhale. The heated cigarette does not undergo combustion during the inhalation process and produces less harmful components than traditional cigarettes during the inhalation process. Currently, in the prior art, heated cigarettes usually use a single heating method to heat the cigarette core, specifically including two methods: external heating and internal heating. External heating means using a heating element to cover the periphery of the cigarette core and heating the cigarette core from the outside to the inside. Internal heating means inserting the heating element into the cigarette core and heating the cigarette core from the inside to the outside. No matter which heating method is used, there is a problem of uneven temperature field in the radial direction of the cigarette core, which will cause differences in the residual amounts of chemical components at different positions in the radial direction of the cigarette core after inhalation. In order to explore the residual amounts of chemical components at different positions in the radial direction of the cigarette core after inhalation and provide a reference for the cigarette core formula, it is necessary to conduct radial layer sampling on the cigarette core.

[0003] After retrieval and analysis, the Chinese utility model patent with the authorization announcement number CN214621947U discloses a tobacco shred radial separation device, which includes a separation sleeve, a push rod and a receiving cylinder. The bottom of the separation sleeve is provided with a cavity for accommodating the cigarette core, and the top is provided with a threaded hole that is in threaded connection with the push rod. The threaded hole communicates with the cavity, and the receiving cylinder is in threaded connection with the bottom of the separation sleeve. When in use, the cigarette core is placed in the cavity at the bottom of the separation sleeve, and the receiving cylinder is connected to the separation sleeve. Then, the push rod is screwed into the separation sleeve. During the forward movement of the push rod, the inner layer of the cigarette core is pushed to separate and pushed into the receiving cylinder, realizing radial layer sampling of the cigarette core. However, there is no obvious layering in the radial direction of the cigarette core after inhalation. When the push rod pushes the cigarette core, the target separation layer will drive the adjacent tobacco shreds to move downward simultaneously, and the layering effect is not good. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a cigarette core layering device to solve the technical problem of poor layering effect in cigarette core sampling in the prior art.

[0005] To achieve the above purpose, the technical solution of the cigarette core layering device provided by the utility model is as follows:

[0006] A cigarette core layering device, comprising a base, a receiving cylinder provided on the base for receiving a cigarette core, and a first guiding cylinder that can be coaxially fitted with the receiving cylinder. The base has a sealing surface for sealing the receiving cylinder. The inner hole of the first guiding cylinder is smaller than the inner hole of the receiving cylinder. The first guiding cylinder is configured with a first cutting cylinder that can be correspondingly guided and fitted with its inner hole. One end of the first cutting cylinder is used to insert and cut the cigarette core to correspondingly separate the outermost layer of the cigarette core. The difference in the inner hole sizes of the receiving cylinder and the first guiding cylinder matches the designed wall thickness size of the outermost layer.

[0007] As a further improvement, it further includes a second guiding cylinder with an inner hole smaller than that of the first guiding cylinder and capable of being coaxially fitted with the receiving cylinder, for correspondingly dividing the cigarette core into an intermediate layer and an inner core layer. The second guiding cylinder is configured with a second cutting cylinder that can be correspondingly guided and fitted with its inner hole. One end of the second cutting cylinder is used to insert and cut the cigarette core. The difference in the inner hole sizes of the first guiding cylinder and the second guiding cylinder matches the designed wall thickness size of the intermediate layer.

[0008] As a further improvement, it further includes a second guiding cylinder and a second cutting cylinder that can be correspondingly guided and fitted with the inner hole of the second guiding cylinder. One end of the second cutting cylinder is used to insert and cut the cigarette core. The second guiding cylinder can be guided through the inner hole of the first guiding cylinder for correspondingly dividing the cigarette core into an intermediate layer and an inner core layer. The wall thickness of the second guiding cylinder matches the designed wall thickness of the intermediate layer.

[0009] As a further improvement, it further includes a second guiding cylinder, a third guiding cylinder... an Nth guiding cylinder, where N≥3. The inner hole of the second guiding cylinder is smaller than that of the first guiding cylinder, the inner hole of the third guiding cylinder is smaller than that of the second guiding cylinder... the inner hole of the Nth guiding cylinder is smaller than that of the (N - 1)th guiding cylinder. The second guiding cylinder is configured with a second cutting cylinder that can be correspondingly guided and fitted with its inner hole, the third guiding cylinder is configured with a third cutting cylinder that can be correspondingly guided and fitted with its inner hole... the Nth guiding cylinder is configured with an Nth cutting cylinder that can be correspondingly guided and fitted with its inner hole. Each guiding cylinder can be coaxially fitted with the receiving cylinder and one end of each cutting cylinder is used to insert and cut the cigarette core for correspondingly dividing the cigarette core into the first layer, the second layer... the (N - 1)th layer, and the inner core layer from the outside to the inside. The first layer is adjacent to the outermost layer. The difference in the inner hole sizes of the first guiding cylinder and the second guiding cylinder matches the designed wall thickness size of the first layer, the difference in the inner hole sizes of the second guiding cylinder and the third guiding cylinder matches the designed wall thickness size of the second layer... the difference in the inner hole sizes of the (N - 1)th guiding cylinder and the Nth guiding cylinder matches the designed wall thickness size of the (N - 1)th layer.

[0010] As a further improvement, it further includes a second guiding cylinder, a third guiding cylinder... an Nth guiding cylinder, where N≥3. The second guiding cylinder is configured with a second slitting cylinder that can be in guiding cooperation with its inner hole, the third guiding cylinder is configured with a third slitting cylinder that can be in guiding cooperation with its inner hole... the Nth guiding cylinder is configured with an Nth slitting cylinder that can be in guiding cooperation with its inner hole. One end of each slitting cylinder is used to insert into and slit the tobacco core. The second guiding cylinder can be guided through the inner hole of the first guiding cylinder, the third guiding cylinder can be guided through the inner hole of the second guiding cylinder... the Nth guiding cylinder can be guided through the inner hole of the (N - 1)th guiding cylinder, so as to correspondingly divide the tobacco core into the first layer, the second layer... the (N - 1)th layer, and the inner core layer from the outside to the inside, where the first layer is adjacent to the outermost layer. The wall thickness of the second guiding cylinder matches the designed wall thickness of the first layer, the wall thickness of the third guiding cylinder matches the designed wall thickness of the second layer... the wall thickness of the Nth guiding cylinder matches the designed wall thickness of the (N - 1)th layer.

[0011] As a further improvement, the tobacco core layering device further includes a centering and holding structure, and the first guiding cylinder is positioned and fitted with the receiving cylinder through the centering and holding structure.

[0012] As a further improvement, the centering and holding structure includes a convex post provided on one of the first guiding cylinder and the receiving cylinder, and a slot provided on the other of the first guiding cylinder and the receiving cylinder for the convex post to insert into.

[0013] As a further improvement, a threaded hole is provided on the side wall of the slot, and the centering and holding structure further includes a setscrew. The setscrew is used to cooperate with the threaded hole, and one end of the setscrew is used to press against the convex post.

[0014] As a further improvement, the base is provided with a positioning groove for one end of the receiving cylinder to be guided and inserted into.

[0015] As a further improvement, the wall thickness of the slitting cylinder is not greater than 0.1 mm.

[0016] The beneficial effects are as follows: The present utility model belongs to a pioneering invention. Specifically, during implementation, the tobacco core to be layered can be placed into the receiving cylinder, and then the corresponding guiding cylinder and slitting cylinder are selected. The inner hole size of the guiding cylinder is related to the layering size. The slitting cylinder is passed through the guiding cylinder and inserted into the tobacco core to slit the tobacco core into different layers radially inside and outside. The inner layer of the slit tobacco core can enter the slitting cylinder. Different from the "pushing" layering in the prior art, when layering the tobacco core in the present utility model, the slitting cylinder "cuts into" the tobacco core. During this process, only the slitting cylinder moves, and the inner layer after slitting enters the slitting cylinder, and the situation where the inner layer of the tobacco core drives the adjacent tobacco core to move will not occur, having a better layering effect. Description of the Drawings

[0017] Figure 1 It is an exploded view of the structure of an embodiment of the tobacco core layering device in the present utility model;

[0018] Figure 2 Schematic diagram of the state when the cigarette core layering device in the present utility model is in use;

[0019] Figure 3 It is Figure 2 A cross-sectional view of the shown state of use (before slitting);

[0020] Figure 4 It is Figure 2 A cross-sectional view of the shown state of use (after slitting);

[0021] Figure 5 Schematic diagram of the state when the cigarette core layering device in the present utility model is in multi-layer slitting;

[0022] Figure 6 It is Figure 5 A cross-sectional view of the shown state of use (after slitting);

[0023] Figure 7 It is Figure 5 A cross-sectional view of the shown state of use (when the cigarette core layer is taken out).

[0024] Explanation of reference numerals:

[0025] 1. Base; 2. Receiving cylinder; 3. First guiding cylinder; 4. Second guiding cylinder; 6. Cigarette core; 21. Set screw; 22. Threaded hole; 23. Slot; 31. Convex column; 51. First slitting cylinder; 52. Second slitting cylinder; 61. Inner core layer; 62. Intermediate layer; 63. Outermost layer. Detailed implementation manners

[0026] In order to solve the technical problem of poor layering effect in the prior art's "pushing" layering (separating) of cigarette cores, the basic technical concept of the present utility model is to use a guiding cylinder and a slitting cylinder in cooperation to "cut" the cigarette cores that need to be layered. Basically, the cigarette core layering device includes a receiving cylinder, a base, a slitting cylinder, and a guiding cylinder. When in use, the cigarette cores can be placed in the receiving cylinder, and the base seals the receiving cylinder. Then, a suitable slitting cylinder and guiding cylinder are selected and matched, and the slitting cylinder passes through the guiding cylinder and inserts into the cigarette cores to divide the cigarette cores into different layers in the inner and outer (radial) directions, which is convenient for subsequent research on the chemical component content at different layering positions of heated cigarettes.

[0027] The following further describes the present utility model in detail in conjunction with embodiments and drawings.

[0028] Specific embodiments of the cigarette core layering device provided by the present utility model:

[0029] As Figures 1-4As shown, the cigarette core layering device includes a receiving cylinder 2, a cutting cylinder, a guiding cylinder, and a base 1. The receiving cylinder 2 is used to hold the cigarette core 6. The base 1 can be used to support and seal the receiving cylinder 2, and it has a sealing surface for sealing the receiving cylinder 2. During use, the entire cigarette core 6 can be placed into the receiving cylinder 2. The cutting cylinder can be in guiding fit with the inner hole of the corresponding guiding cylinder, and one end of it is used to insert into the cigarette core to cut (layer cut) the cigarette core into different layers inside and outside in the radial direction.

[0030] Actually, according to the detection requirements of different projects, it may be necessary to divide the cigarette core 6 into three layers, namely Figure 4 and Figure 6 the inner core layer 61, the middle layer 62, and the outermost layer 63 in it. Correspondingly, two guiding cylinders are configured. Naturally, two cutting cylinders are also configured, namely the first cutting cylinder 51 and the second cutting cylinder 52.

[0031] Specifically, as a scheme of nested fit of different guiding cylinders inside and outside, as Figures 1-6 shown, the two guiding cylinders configured in this embodiment are the first guiding cylinder 3 and the second guiding cylinder 4 respectively. The inner hole size (inner diameter) of the first guiding cylinder 3 is smaller than the inner hole size (inner diameter) of the receiving cylinder 2. The difference between the inner hole sizes of the receiving cylinder 2 and the first guiding cylinder 3 corresponds and matches the wall thickness size designed for the outermost layer 63. The second guiding cylinder 4 can be guided through the inner hole of the first guiding cylinder 3, and the wall thickness of the second guiding cylinder 4 corresponds and matches the wall thickness designed for the middle layer 62. The inner hole size of the second guiding cylinder 4 corresponds and matches the core-taking diameter designed for the inner core layer 61.

[0032] At this time, when cutting the cigarette core 6, the first guiding cylinder 3 and the receiving cylinder 2 can be first installed and fitted so that the first guiding cylinder 3 and the receiving cylinder 2 are coaxially fitted. Then the second guiding cylinder 4 is guided through the inner hole of the first guiding cylinder 3, and then the second cutting cylinder 52 is inserted to cut out the inner core layer 61. After the second cutting cylinder 52 is inserted into the cigarette core 6, the second guiding cylinder 4 can be taken out from the first guiding cylinder 3. At this time, the second cutting cylinder 52 can be taken out or not. In the case of not taking it out, the second cutting cylinder 52 also has the function of supporting the cigarette core to prevent it from collapsing around. Then the first cutting cylinder 51 is inserted to cut out the middle layer 62, and the remaining is the outermost layer 63. To facilitate taking out the second guiding cylinder 4, the axial length of the second guiding cylinder 4 is greater than the axial length of the first guiding cylinder 3.

[0033] Analyzing the above use process, it can be seen that when layering the cigarette core 6, each cutting cylinder is the process of cutting into the cigarette core 6, and the cigarette core 6 does not move. In the whole process, only the cigarette core 6 and the cutting cylinder 5 move relative to each other, and the layering effect is better. Preferably, the cutting cylinder is a cylinder with a wall thickness not greater than 0.1 mm, and the material is stainless steel.

[0034] In actual use, the above design can actually cut out different layers sequentially from the inside out to form an inner and outer nested sleeve structure. A guide cylinder with a corresponding wall thickness can be designed according to the required layers, which is convenient for use.

[0035] In other embodiments, the first guide cylinder and the second guide cylinder can also be configured as guide cylinders with the same outer diameter but different inner hole sizes. During use, different guide cylinders and receiving cylinders are respectively replaced and coaxially matched. At this time, the difference in the inner hole sizes of the first guide cylinder and the second guide cylinder corresponds and matches the wall thickness size of the designed intermediate layer.

[0036] In other embodiments, it may actually be necessary to divide the tobacco core 6 into four layers. The four layers defined from the outside to the inside are the outermost layer, the first layer, the second layer, and the inner core layer in sequence. At this time, three guide cylinders can be configured. According to the different inner hole sizes, the inner holes of the guide cylinders are, from large to small, the first guide cylinder, the second guide cylinder, and the third guide cylinder. Naturally, three cutting cylinders are also correspondingly configured.

[0037] As an embodiment of replacing different guide cylinders, the difference in the inner hole sizes of the receiving cylinder and the first guide cylinder corresponds and matches the thickness size of the designed outermost layer. The difference in the inner hole sizes of the first guide cylinder and the second guide cylinder corresponds and matches the thickness size of the designed first layer. The difference in the inner hole sizes of the second guide cylinder and the third guide cylinder corresponds and matches the thickness size of the designed second layer. The inner hole size of the third guide cylinder corresponds to the diameter of the inner core layer.

[0038] In the case of configuring three guide cylinders, each guide cylinder can also form an inner and outer nested sleeve, that is, the inner hole of the first guide cylinder allows the second guide cylinder to pass through for guiding, the inner hole of the second guide cylinder allows the third guide cylinder to pass through for guiding. The difference in the inner hole sizes of the receiving cylinder and the first guide cylinder corresponds and matches the thickness size of the designed outermost layer. The wall thickness size of the second guide cylinder corresponds and matches the wall thickness size of the designed first layer. The wall thickness size of the third guide cylinder corresponds and matches the wall thickness size of the designed second layer. At this time, it is still possible to cut sequentially from the inside out. After each cutting is completed, the corresponding guide cylinder is taken out, which is convenient and efficient.

[0039] Of course, in different embodiments, it may actually be necessary to divide the tobacco core 6 into more layers. By repeating the above rules, N (N≥3) guide cylinders can be configured, so that the tobacco core 6 is divided into the outermost layer, the first layer, the second layer... the (N - 1)th layer, and the inner core layer arranged from the outside to the inside. Correspondingly, N cutting cylinders also need to be configured, and each cutting cylinder can be in guiding cooperation with the corresponding guide cylinder.

[0040] As an implementation method of replacing different guide cylinders, the different guide cylinders are arranged in descending order of inner diameter as the first guide cylinder, the second guide cylinder... the Nth guide cylinder. The inner diameter sizes of the guide cylinders satisfy that the difference between the inner diameter sizes of the receiving cylinder and the first guide cylinder corresponds and matches the designed thickness size of the outermost layer, the difference between the inner diameter sizes of the first guide cylinder and the second guide cylinder corresponds and matches the designed wall thickness size of the first layer, the difference between the inner diameter sizes of the second guide cylinder and the third guide cylinder corresponds and matches the designed wall thickness size of the second layer... the difference between the inner diameter sizes of the (N - 1)th guide cylinder and the Nth guide cylinder corresponds and matches the designed wall thickness size of the (N - 1)th layer.

[0041] As an implementation method of inner and outer nested guide cylinders, the difference between the inner diameter sizes of the receiving cylinder and the first guide cylinder corresponds and matches the designed thickness size of the outermost layer. The inner diameter of the first guide cylinder allows the second guide cylinder to pass through it, the inner diameter of the second guide cylinder allows the third guide cylinder to pass through it... the (N - 1)th guide cylinder allows the Nth guide cylinder to pass through it. The wall thickness of the second guide cylinder matches the designed wall thickness of the first layer, the wall thickness of the third guide cylinder matches the designed wall thickness of the second layer... the wall thickness of the Nth guide cylinder matches the designed wall thickness of the (N - 1)th layer.

[0042] Of course, different detection item requirements are different. In fact, there is also a situation where only the tobacco core needs to be divided into two layers. In the case of only two layers, the relatively outer layer of the two layers is the outermost layer. At this time, only the first guide cylinder can be retained. Similarly, the difference between the inner diameter sizes of the receiving cylinder and the first guide cylinder corresponds and matches the designed thickness size of the outermost layer.

[0043] In order to prevent the first guide cylinder 3 from accidentally moving during use, a centering and holding structure for keeping the first guide cylinder 3 and the receiving cylinder 2 in a coaxial state is also provided between the first guide cylinder 3 and the receiving cylinder 2. The first guide cylinder 3 can be centered and positioned with the receiving cylinder 2 through the centering and holding structure.

[0044] As a specific implementation method, as Figure 1 shown, the centering and holding structure includes a convex column 31 provided on the first guide cylinder 3 and a slot 23 provided on the receiving cylinder 2. The convex column 31 can be inserted into the slot 23 to keep the position of the first guide cylinder 3. Using this method can ensure a more stable coaxial centering effect. It is not difficult to understand that in actual application, the positions of the slot 23 and the convex column 31 can also be interchanged, that is, the slot 23 is provided on the first guide cylinder 3 and the convex column 31 is provided on the receiving cylinder 2. Of course, in other implementation methods, the centering and holding structure can also be in other forms. For example, a sleeve with a larger diameter is provided. After the first guide cylinder 3 and the receiving cylinder 2 are centered, the sleeve is sleeved around the first guide cylinder 3 and the receiving cylinder 2 to limit the relative movement between the first guide cylinder 3 and the receiving cylinder 2.

[0045] Preferably, in order to further improve the stability of the coaxial alignment of the first guide cylinder 3 and the receiving cylinder 2, as Figure 1 shown, in this embodiment, a threaded hole 22 is provided on the side wall of the slot 23. The centering and holding structure further includes a setscrew 21. The setscrew 21 can be screwed into the threaded hole 22, and one end of the setscrew 21 can directly press against the convex column 31.

[0046] In order to facilitate the insertion and removal of the tobacco core 6, in this embodiment, the base 1 and the receiving cylinder 2 are also detachably fitted. When the tobacco core 6 needs to be cut, the receiving cylinder 2 and the base 1 can be installed and fitted. At this time, the base 1 can play a role in blocking the receiving cylinder 2. After the tobacco core 6 is cut, the base 1 and the receiving cylinder 2 are disassembled. At this time, the receiving cylinder 2 is opened so that the tobacco core 6 can be conveniently inserted and removed.

[0047] Specifically, as Figures 1-7 shown, the base 1 is provided with a positioning groove for guiding and inserting one end of the receiving cylinder 2. The groove bottom surface of the positioning groove forms a blocking surface for blocking the receiving cylinder 2. This structure is convenient for disassembly and assembly. After the receiving cylinder 2 is inserted into the positioning groove, the groove bottom of the positioning groove can block the receiving cylinder 2. Of course, in other embodiments, the base 1 can be an independent bottom plate.

[0048] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still make modifications to the technical solutions described in the foregoing embodiments without creative efforts, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A cigarette core layering device, characterized in that: It includes a base, a receiving tube for receiving a cigarette core and a first guide tube coaxially matched with the receiving tube. The base has a sealing surface for sealing the receiving tube. The inner hole of the first guide tube is smaller than the inner hole of the receiving tube. The first guide tube is provided with a first cutting tube corresponding to the inner hole thereof. One end of the first cutting tube is used for inserting and cutting the cigarette core to separate the outermost layer of the cigarette core. The difference between the inner hole sizes of the receiving tube and the first guide tube matches the designed wall thickness size of the outermost layer.

2. The cigarette core layering device according to claim 1, characterized in that: It also includes a second guide cylinder whose inner hole is smaller than that of the first guide cylinder and can be coaxially matched with the accommodating cylinder, so as to divide the cigarette core into an intermediate layer and an inner core layer. The second guide cylinder is equipped with a second cutting cylinder that can be correspondingly guided and matched with its inner hole. One end of the second cutting cylinder is used to insert and cut the cigarette core. The difference between the inner hole sizes of the first guide cylinder and the second guide cylinder is consistent with the designed wall thickness size of the intermediate layer.

3. The cigarette core layering device according to claim 1, characterized in that: It also includes a second guide tube and a second cutting tube that can be guided and matched with the inner hole of the second guide tube. One end of the second cutting tube is used to insert and cut the cigarette core. The second guide tube can be guided to penetrate into the inner hole of the first guide tube to be used to divide the cigarette core into a middle layer and an inner core layer. The wall thickness of the second guide tube is consistent with the designed wall thickness of the middle layer.

4. The cigarette core layering device according to claim 1, characterized in that: It also includes a second guide tube, a third guide tube...the Nth guide tube, N≥3, the inner hole of the second guide tube is smaller than the first guide tube, the inner hole of the third guide tube is smaller than the second guide tube...the inner hole of the Nth guide tube is smaller than the N-1th guide tube, the second guide tube is equipped with a second slitting tube that can be matched with its inner hole in a corresponding guiding manner, the third guide tube is equipped with a third slitting tube that can be matched with its inner hole in a corresponding guiding manner...the Nth guide tube is equipped with an Nth slitting tube that can be matched with its inner hole in a corresponding guiding manner, each guide tube can be coaxially matched with the accommodating tube and one end of each slitting tube is used to insert and cut the tobacco core, so as to correspondingly divide the tobacco core into the first layer, the second layer...the N-1 layer, the inner core layer from the outside to the inside, wherein the first layer is adjacent to the outermost layer, the difference between the inner hole sizes of the first guide tube and the second guide tube is consistent with the designed wall thickness size of the first layer, the difference between the inner hole sizes of the second guide tube and the third guide tube is consistent with the designed wall thickness size of the second layer...the difference between the inner hole sizes of the N-1th guide tube and the Nth guide tube is consistent with the designed wall thickness size of the N-1th layer.

5. The cigarette core layering device according to claim 1, characterized in that: It also includes a second guide tube, a third guide tube...the Nth guide tube, N≥3, the second guide tube is equipped with a second slitting tube that can be guided and matched with its inner hole, the third guide tube is equipped with a third slitting tube that can be guided and matched with its inner hole...the Nth guide tube is equipped with an Nth slitting tube that can be guided and matched with its inner hole, one end of each slitting tube is used to insert and cut the tobacco core, the second guide tube can be guided to penetrate into the inner hole of the first guide tube, the third guide tube can be guided to penetrate into the inner hole of the second guide tube...the Nth guide tube can be guided to penetrate into the inner hole of the N-1th guide tube, so as to correspondingly divide the tobacco core into the first layer, the second layer...the N-1 layer, and the inner core layer from the outside to the inside, wherein the first layer is adjacent to the outermost layer, the wall thickness of the second guide tube is consistent with the designed wall thickness of the first layer, the wall thickness of the third guide tube is consistent with the designed wall thickness of the second layer...the wall thickness of the Nth guide tube is consistent with the designed wall thickness of the N-1th layer.

6. The cigarette core layering device according to any one of claims 1 to 5, characterized in that: The cigarette core layering device also includes a centering and holding structure, and the first guide cylinder is positioned and matched with the accommodating cylinder through the centering and holding structure.

7. The cigarette core layering device according to claim 6, characterized in that: The centering and holding structure comprises a convex column arranged on one of the first guide cylinder and the accommodating cylinder, and a slot arranged on the other of the first guide cylinder and the accommodating cylinder for inserting the convex column.

8. The cigarette core layering device according to claim 7, characterized in that: A threaded hole is arranged on the side wall of the slot, and the centering and holding structure further comprises a top screw, which is used to cooperate with the threaded hole, and one end of the top screw is used to press the convex column.

9. The cigarette core layering device according to any one of claims 1 to 5, characterized in that: The base is provided with a positioning groove for guiding and inserting one end of the accommodating tube.

10. The cigarette core layering device according to any one of claims 1 to 5, characterized in that: The wall thickness of the first slitting cylinder is not greater than 0.1 mm.

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