Chopping cutter disc, leveling device and cigarette equipment

Abstract

The utility model belongs to the technical field of cigarette manufacturing machinery, and particularly provides a chopper disc, a leveler and cigarette equipment. A groove is formed in the periphery of a disc body of the chopper disc, the side portion and the top of the groove are open, the groove comprises a bottom wall opposite to the top opening, a front side wall and a rear side wall, the front side wall and the rear side wall are located on the front side and the rear side in the rotating direction of the bottom wall respectively, the wall face of the bottom wall is a plane, the wall face of the front side wall and the wall face of the rear side wall are arc-shaped faces, and openings of the arc-shaped faces face the top; or the wall surfaces of the front side wall, the bottom wall and the rear side wall are continuous arc-shaped surfaces. The leveling device comprises the chopper disc. The cigarette equipment comprises the leveling device. Due to the fact that the wall faces of the front side wall and the rear side wall are arc-shaped faces or the wall faces of the front side wall, the rear side wall and the bottom wall are continuous arc-shaped faces, a transition area exists between the formed tightening head and the normal density section, density mutation in the length direction of the cigarette is avoided, and the problem of cigarette end breakage is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cigarette manufacturing machinery, and particularly relates to a splitting cutter disc, a leveling device and a cigarette manufacturing device. Background Art

[0002] During cigarette production, there are processes such as tobacco processing, tipping and packaging. A suction forming system is configured on the cigarette manufacturing device. The principle of the suction forming system is to utilize the negative pressure in the air chamber to suck the cut tobacco separated from the stem into the suction channel. Under the guidance of the air flow, the cut tobacco can be adsorbed on the suction belt (mesh suction belt). As the suction belt continuously rotates, the prototype of the cut tobacco bundle is formed. A leveling device is also configured on the cigarette manufacturing device. Before the cut tobacco bundle is sent to the cigarette gun, the leveling device can trim the cut tobacco bundle so that the trimmed cut tobacco bundle is basically uniform. The leveling device includes two splitting cutter discs arranged in pairs and a brush wheel arranged below the splitting cutter discs. There is a clamping space for clamping the cut tobacco bundle between the two splitting cutter discs. When in use, the two splitting cutter discs rotate in opposite directions. The cut tobacco bundle is clamped between the two splitting cutter discs, and the excess cut tobacco bundle can be brushed away by the brush wheel.

[0003] The two ends of a cigarette are the ignition end and the filter tip end respectively. In order to avoid the appearance of an empty head in the cigarette and prevent air leakage at the filter tip end, the cut tobacco density at the ignition end and the filter tip end is greater than that in the middle section between the ignition end and the filter tip end. That is to say, in the length direction of the cigarette, the front and rear ends are tighter tight heads, and the middle is a normal density section. For this reason, multiple grooves are provided on the outer periphery of the commonly used splitting cutter disc at present. The top and side of the groove are both open. When clamping the cut tobacco bundle, more cut tobacco can be accommodated at the groove, so that when the cigarette is formed by rolling, the ignition end and the filter tip end can have a greater density.

[0004] In the prior art, the side wall of the groove of the commonly used splitting cutter disc is perpendicular to the bottom wall of the groove. However, in long-term production practice, the applicant found that in the products produced with such grooves, the density changes suddenly at the transition position between the tight head and the normal density section. During the combustion process, the cigarette is likely to break and fall off at the transition position, resulting in poor cigarette quality and affecting the consumer experience.

[0005] After retrieval and analysis, in the face of the above problems, in the related art, there is a solution to change the side wall of the groove to an inclined surface with a certain inclination angle with the bottom wall. For example, the patent documents with the authorization publication numbers of CN214071737U and CN218571386U disclose a splitting cutter disc. The side wall of the groove of this splitting cutter disc is an inclined surface with a certain inclination angle with the bottom wall, or in other words, the projection of the groove in the radial direction of the splitting cutter disc is an isosceles trapezoid. In this way, in the length direction of the cigarette, a longer transition zone can be formed between the tight head and the normal density section, which can improve the problem of the cigarette breaking and falling off during the combustion process to a certain extent.

[0006] However, in the above solution of changing the side wall of the groove to an inclined surface, when the groove has the same length and width, compared with the vertical side wall of the groove, the volume of the groove is severely reduced, the amount of cut tobacco that can be accommodated becomes less, and correspondingly, the density of the tight head also becomes smaller. The cut tobacco at the ignition end is likely to fall off, that is, the phenomenon of cut tobacco falling off at the end is likely to occur, affecting the quality of cigarettes. In addition, during the production of individual cigarettes, the cut tobacco strip is cut from the edge of the tight head part. In the above solution where the side wall of the groove is an inclined surface, the amount of cut tobacco at the end position of the tight head is too small, and the density at the end position is small, making it easier for the phenomenon of cut tobacco falling off at the end to occur. Summary of the Invention

[0007] The purpose of the present invention is to provide a splitting knife disc to solve the technical problems that cigarettes produced by a splitting knife disc with a groove whose side wall is perpendicular to the bottom wall are prone to the phenomenon of broken branches during combustion, and cigarettes produced by a splitting knife disc with a groove whose side wall is an inclined surface are prone to the phenomenon of cut tobacco falling off at the end in the prior art. Another purpose of the present invention is to provide a leveling device and a cigarette manufacturing equipment to solve the same technical problems.

[0008] To achieve the above purpose, the technical solution of the splitting knife disc provided by the present invention is as follows:

[0009] A splitting knife disc includes a disc body. A groove for forming a tight head is provided on the outer periphery of the disc body. The side and top of the groove are both open. The groove includes a bottom wall opposite to the top opening, and a front side wall and a rear side wall respectively located on the front and rear sides in the rotation direction of the bottom wall. The wall surface of the bottom wall is a plane, and the wall surfaces of the front side wall and the rear side wall are both arc-shaped surfaces, and the openings of the arc-shaped surfaces face the top; or the wall surfaces of the front side wall, the bottom wall and the rear side wall are continuous arc-shaped surfaces.

[0010] As a further improvement, the wall surfaces of the front side wall and the rear side wall are tangent to the wall surface of the bottom wall.

[0011] As a further improvement, the wall surfaces of the front side wall and the rear side wall are both circular arc surfaces, and the radii of the wall surfaces of the front side wall and the rear side wall are equal.

[0012] As a further improvement, the radii of the wall surfaces of the front side wall and the rear side wall are 7 - 60 mm.

[0013] As a further improvement, the depth of the groove is 0.5 - 5 mm.

[0014] As a further improvement, a plurality of grooves are evenly distributed on the outer periphery of the splitting knife disc, and the shapes of the grooves are the same.

[0015] As a further improvement, the sizes of the grooves are the same.

[0016] As a further improvement, the groove further includes a side wall opposite to the side opening, and the wall surface of the side wall is perpendicular to the top surface of the disc body.

[0017] The beneficial effects are as follows: The utility model belongs to an improved invention. Specifically, during implementation, since the wall surfaces of the front and rear sidewalls are arc-shaped surfaces, or the wall surfaces of the front sidewall, rear sidewall, and bottom wall are continuous arc-shaped surfaces, the volume gradually decreases from the center position of the groove towards the front and rear sides, and the quantity of tobacco strands gradually decreases. Eventually, there is a transition region between the formed tight head and the normal density section, avoiding density mutations in the length direction of the cigarette rod, thereby improving the problem of cigarette rod breakage at the end. At the same time, this can also ensure that the overall groove has a relatively large volume, and further ensure that the formed tight head has a relatively large density, and can also better control the phenomenon of tobacco shreds falling off at the end.

[0018] To achieve the above object, the technical solution of the leveler provided by the utility model is as follows:

[0019] A leveler includes two splitting cutter discs. The splitting cutter disc includes a disc body. A groove for forming a tight head is provided on the outer periphery of the disc body. The side and top of the groove are both open. The groove includes a bottom wall opposite to the top opening, and a front sidewall and a rear sidewall respectively located on the front and rear sides in the rotation direction of the bottom wall. The wall surface of the bottom wall is a plane, and the wall surfaces of the front sidewall and the rear sidewall are both arc-shaped surfaces, and the opening of the arc-shaped surface faces the top; or the wall surfaces of the front sidewall, bottom wall, and rear sidewall are continuous arc-shaped surfaces.

[0020] As a further improvement, the wall surfaces of the front sidewall and the rear sidewall are tangent to the wall surface of the bottom wall.

[0021] As a further improvement, the wall surfaces of the front sidewall and the rear sidewall are both circular arc surfaces, and the radii of the wall surfaces of the front sidewall and the rear sidewall are equal.

[0022] As a further improvement, the radii of the wall surfaces of the front sidewall and the rear sidewall are 7 - 60 mm.

[0023] As a further improvement, the groove depth of the groove is 0.5 - 5 mm.

[0024] As a further improvement, a plurality of evenly distributed grooves are provided on the outer periphery of the splitting cutter disc, and the shapes of the grooves are the same.

[0025] As a further improvement, the sizes of the grooves are the same.

[0026] As a further improvement, the groove further includes a sidewall opposite to the side opening, and the wall surface of the sidewall is perpendicular to the top surface of the disc body.

[0027] The beneficial effects are as follows: The utility model belongs to an improved invention. Specifically, during implementation, since the wall surfaces of the front and rear side walls are arc-shaped surfaces, or the wall surfaces of the front side wall, rear side wall, and bottom wall are continuous arc-shaped surfaces, the volume gradually decreases from the center position of the groove towards the front and rear sides, and the quantity of tobacco shreds gradually decreases. Eventually, there is a transition region between the formed tight head and the normal density section, avoiding density mutation in the length direction of the cigarette rod, thereby improving the problem of cigarette rod breakage. At the same time, this can also ensure that the overall groove has a relatively large volume, and further ensure that the finally formed tight head has a relatively large density, and can also better control the phenomenon of filament dropping at the end.

[0028] To achieve the above object, the technical solution of the cigarette manufacturing equipment provided by the utility model is as follows:

[0029] A cigarette manufacturing equipment, including a leveling device. The leveling device includes two splitting cutter discs. Each splitting cutter disc includes a disc body. A groove for forming a tight head is provided on the outer periphery of the disc body. The side and top of the groove are both open. The groove includes a bottom wall opposite to the top opening, and a front side wall and a rear side wall respectively located on the front and rear sides in the rotation direction of the bottom wall. The wall surface of the bottom wall is a plane, and the wall surfaces of the front side wall and the rear side wall are both arc-shaped surfaces, with the opening of the arc-shaped surface facing the top; or the wall surfaces of the front side wall, bottom wall, and rear side wall are continuous arc-shaped surfaces.

[0030] As a further improvement, the wall surfaces of the front side wall and the rear side wall are tangent to the wall surface of the bottom wall.

[0031] As a further improvement, the wall surfaces of the front side wall and the rear side wall are both circular arc surfaces, and the radii of the wall surfaces of the front side wall and the rear side wall are equal.

[0032] As a further improvement, the radii of the wall surfaces of the front side wall and the rear side wall are 7 - 60 mm.

[0033] As a further improvement, the groove depth of the groove is 0.5 - 5 mm.

[0034] As a further improvement, a plurality of evenly distributed grooves are provided on the outer periphery of the splitting cutter disc, and the shapes of the grooves are the same.

[0035] As a further improvement, the sizes of the grooves are the same.

[0036] As a further improvement, the groove further includes a side wall opposite to the side opening, and the wall surface of the side wall is perpendicular to the top surface of the disc body.

[0037] The beneficial effects are as follows: The present utility model belongs to an improved invention. Specifically, during implementation, since the wall surfaces of the front and rear sidewalls are arc-shaped surfaces, or the wall surfaces of the front sidewall, rear sidewall, and bottom wall are continuous arc-shaped surfaces, the volume gradually decreases from the center position of the groove towards the front and rear sides, and the quantity of cut tobacco gradually decreases. Eventually, there is a transition region between the formed tight head and the normal density section, avoiding density mutation in the length direction of the cigarette rod, thereby improving the problem of cigarette rod breakage. At the same time, this can also ensure that the overall groove has a larger volume, and thus ensure that the finally formed tight head has a larger density, and can also better control the phenomenon of filament shedding at the end. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a structural schematic diagram of an embodiment of the leveling device in the present utility model;

[0039] Figure 2 is Figure 1 a three-dimensional view of the splitting cutter disk in

[0040] Figure 3 is Figure 2 a radial projection view of the groove in

[0041] Description of the reference numerals in the drawings:

[0042] 1, splitting cutter disk; 2, wire brushing wheel; 3, cutter disk mounting seat; 4, rotating shaft; 101, disk body; 102, groove; 103, bottom wall; 104, front sidewall; 105, rear sidewall; 106, central hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] In order to improve the problem of cigarette rod breakage during the combustion process and filament shedding at the end, and enhance the quality of cigarette production. The basic technical concept of the present utility model is to improve the structure of the groove on the splitting cutter disk for forming the tight head. Specifically, the wall surfaces of the front and rear sidewalls of the groove are changed to arc-shaped surfaces with the openings of the arc-shaped surfaces facing upwards, or the front sidewall, bottom wall, and rear sidewall of the groove are changed to continuous arc-shaped surfaces. During cigarette production, in the front and rear directions, the cut tobacco in the middle of the groove is the most, and the cut tobacco on the front and rear sides gradually decreases. In this way, a transition section between the cut tobacco tight head and the normal density section can be obtained, improving the problem of cigarette rod breakage during the combustion process. At the same time, by using the groove with this structure, it can also ensure that the groove has a larger volume to accommodate more cut tobacco, ensuring that the tight head can obtain a greater density. Even if the cut tobacco strip is cut from the edge position of the tight head subsequently, it will not cause the density at the end position to be too small, thereby improving the phenomenon of filament shedding at the end.

[0044] The following further describes the present utility model in detail with reference to the embodiments.

[0045] Specific embodiments of the leveling device provided by the present utility model:

[0046] The leveling device provided by this embodiment is asFigure 1 As shown, it includes two splitting cutter discs 1, and the splitting cutter discs 1 are rotatably installed on the cutter disc mounting seat 3. During use, the two splitting cutter discs 1 rotate in opposite directions. Specifically, as Figure 2 shown, the splitting cutter disc 1 includes a disc body 101, a central hole 106 is provided at the center of the disc body 101, a rotating shaft 4 is provided on the cutter disc mounting seat 3, and the central hole 106 and the rotating shaft 4 are in anti-rotation fit, and the splitting cutter disc 1 can rotate with the rotating shaft 4. A wire brushing wheel 2 is further provided below the splitting cutter disc 1, and the wire brushing wheel 2 functions to brush off excess cut tobacco.

[0047] The specific working process of the leveling device is the prior art and will not be introduced in detail here. The following further describes the structure of the splitting cutter disc 1.

[0048] As Figure 1 and Figure 2 shown, a groove 102 is provided on the outer periphery of the disc body 101 of the splitting cutter disc 1, and the top and side of the groove 102 are both open. Specifically, the groove 102 includes a bottom wall 103 and a side wall. The bottom wall 103 refers to the bottom wall opposite to the top opening. For the convenience of understanding, the direction of the side wall is defined here. The rotation direction of the splitting cutter disc 1 is defined as the front-back direction. Taking Figure 2 as an example, assuming that the splitting cutter disc 1 rotates clockwise and the cut tobacco strip is defined as being conveyed from the back to the front, the side wall can be divided into a front side wall 104 and a rear side wall 105. As Figure 2 and Figure 3 shown, the wall surfaces of the front side wall 104 and the rear side wall 105 are both arc-shaped surfaces, and the openings of the arc-shaped surfaces face the top of the splitting cutter disc 1, and the wall surface of the bottom wall 103 is a plane. In this way, when producing cigarettes, due to the existence of the groove 102, there can still be a compact section and a normal section in the length direction of the cut tobacco strip, and finally a cigarette including a tight head and a normal density section is formed. At the same time, due to the existence of the arc-shaped front side wall 104 and rear side wall 105, there can also be a transition section between the tight head and the normal density section, avoiding sudden density change, and thus improving the problem of cigarette breakage during combustion. Moreover, as Figure 3 shown, compared with the prior art solution where the side wall surface is an inclined surface (the dotted line in Figure 3 ), in the solution adopting the arc-shaped surface, when the length in the front-back direction of the groove 102 is equal to the groove depth, the volume of the groove 102 is larger, and thus more cut tobacco can be accommodated, so as to obtain a more dense compact section and improve the phenomenon of end dropping of cut tobacco. In addition, even if the cut tobacco strip is cut at the edge position of the compact section, the end position can still have a relatively large density and will not easily show the phenomenon of end dropping of cut tobacco.

[0049] As another implementation manner of the groove 102, the front side wall 104, the bottom wall 103, and the rear side wall 105 of the groove 102 can be an integral continuous arc-shaped surface, and the wall surface opposite to the top opening is an arc-shaped surface. This method has the same effect as setting the groove side wall as an arc-shaped surface.

[0050] Further, on the basis that the wall surfaces of the front side wall 104 and the rear side wall 105 are arc-shaped surfaces, the wall surfaces of the front side wall 104 and the rear side wall 105 are tangent to the wall surface of the bottom wall 103. Compared with the solution in other embodiments where the wall surfaces of the front side wall 104 and the rear side wall 105 are not tangent to the wall surface of the bottom wall 103, a longer transition section can be obtained in this way, and at the same time, the transition between the compact section and the transition section is smoother.

[0051] Specifically, the wall surfaces of the front side wall 104 and the rear side wall 105 are arc surfaces, and their radii are equal. That is to say, the groove 102 is a symmetric structure. In this way, during production, the shapes and sizes of the transition sections at both ends are the same, which is beneficial to improving the consistency of cigarette products. Of course, it should be noted that in other embodiments, the radii of the wall surfaces of the front side wall 104 and the rear side wall 105 are not necessarily the same. When the deviation between the two is not large, the effects of improving the breakage of the cigarette during the combustion process and the dropping of filaments at the end are still achieved. More specifically, as a preferred solution, the radii of the wall surfaces of the front side wall 104 and the rear side wall 105 are 7 - 60 mm. In addition, the groove depth of the groove 102 is preferably 0.5 - 5 mm.

[0052] As Figure 1 and Figure 2 shown, on the disk body 101 of the splitting knife disk 1, a plurality of grooves 102 are provided, specifically, there can be three, four, six, etc. The shapes of the grooves 102 are the same. In this way, during production, the cigarette ignition end and the filter tip can obtain a similar density change trend. Further, the sizes of the grooves 102 are the same, so that the ignition end and the filter tip can obtain a consistent structure.

[0053] Of course, it should be noted that in other embodiments, since the problems of cigarette breakage and filament dropping at the end mainly occur at the ignition end, then the shape of the groove 102 corresponding to the filter tip can also adopt the groove 102 in the prior art, or adopt the groove 102 as Figure 3 shown, but the groove depth is shallower. In addition, the wall surface of the side wall of the groove 102 opposite to the side opening is perpendicular to the top surface of the disk body. In this way, a tighter head with a more uniform density can be formed. Of course, in other embodiments, the wall surface of the side wall opposite to the side opening is not strictly perpendicular to the top surface of the disk body, and it can have a certain inclination angle with the top surface of the disk body.

[0054] Specific embodiments of the splitting knife disk in the present utility model:

[0055] The embodiment of the splitting knife disk is the splitting knife disk described in the embodiment of the above-mentioned leveler, and will not be specifically described here.

[0056] Specific embodiments of the cigarette equipment in the present utility model:

[0057] The cigarette-making equipment includes a leveler, and the structure of the leveler is the same as that of the leveler described in the above embodiments of the leveler, and will not be specifically described here.

[0058] 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, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative efforts, or perform equivalent replacements on 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. The splitting tool disk includes a disk body. A groove for forming a tight head is provided on the outer periphery of the disk body. The side and top of the groove are both open. The groove includes a bottom wall opposite to the top opening and a front side wall and a rear side wall respectively located on the front and rear sides in the rotation direction of the bottom wall. It is characterized in that, The wall surface of the bottom wall is a plane, and the wall surfaces of the front side wall and the rear side wall are both arc-shaped surfaces, with the openings of the arc-shaped surfaces facing the top; or the wall surfaces of the front side wall, the bottom wall and the rear side wall are continuous arc-shaped surfaces.

2. The split tool disk according to claim 1, characterized in that, The wall surfaces of the front side wall and the rear side wall are tangent to the wall surface of the bottom wall.

3. The cleaving tool disk according to claim 1 or 2, characterized in that, The wall surfaces of the front side wall and the rear side wall are both circular arc surfaces, and the radii of the wall surfaces of the front side wall and the rear side wall are equal.

4. The splitting tool disk according to claim 3, characterized in that, The radii of the wall surfaces of the front side wall and the rear side wall are 7 - 60 mm.

5. The splitting tool disk according to claim 1 or 2, characterized in that, The groove depth of the groove is 0.5 - 5.0 mm.

6. The splitting tool disk according to claim 1 or 2, characterized in that, A plurality of grooves are evenly distributed on the outer periphery of the splitting knife disc, and the shapes of the grooves are the same.

7. The splitting cutter head according to claim 6, characterized in that, The sizes of the grooves are the same.

8. The splitting cutter head according to claim 1 or 2, characterized in that, The groove further includes a side wall opposite to the side opening, and the wall surface of the side wall is perpendicular to the top surface of the disc body.

9. Leveler, including two split blade discs, characterized in that, The splitting knife disc is the splitting knife disc according to any one of claims 1 - 8.

10. A cigarette-making device, including a leveler, the leveler includes two splitting cutter disks, characterized in that, The splitting knife disc is the splitting knife disc according to any one of claims 1 - 8.

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