WO2020213360A1

WO2020213360A1 - Perforating drum device and perforation device

Info

Publication number: WO2020213360A1
Application number: PCT/JP2020/013651
Authority: WO
Inventors: 啓二山道; 仙道　誠; 尚弘時津
Original assignee: 日本たばこ産業株式会社
Priority date: 2019-04-18
Filing date: 2020-03-26
Publication date: 2020-10-22
Also published as: EP3957191A1; JP7187684B2; CN113710106A; CN113710106B; EP3957191A4; US20220030931A1; JPWO2020213360A1

Abstract

A technique is provided by which it is possible, in post-processing, to perforate a cavity in the tip of a tobacco rod in a heated-type tobacco product. This perforating drum is provided with a rotating drum which has a holding part that holds a heated-type tobacco product, a perforation unit which perforates the tobacco rod, and a cam which is provided on a rotating drum base part provided on the rotating drum. The perforation unit comprises a slide rod which is provided on the rotating drum, a perforating slider which has a perforation needle arranged opposite of the tip surface of the tobacco rod and which is slidably held on the slide rod, and a cam follower which is provided on the perforation slider and engages with the cam, and which allows the perforation slider to slide along the slide rod, wherein the cam has an insertion section and a withdrawal section.

Description

Drilling drum device and drilling device

The present invention relates to a perforation drum device and a perforation device.

A tobacco rod formed by filling the inside of a wrapping paper with a tobacco filler containing a tobacco raw material (for example, chopped tobacco, tobacco granules, a molded product of a tobacco sheet, etc.) and an aerosol-producing base material (for example, glycerin, propylene glycol, etc.). Heat-not-burn tobacco is known. This type of heat-not-burn tobacco is combined with a heating device (heat-not-burn tobacco equipment) to form a heat-not-burn tobacco product, and the aerosol produced by heating the tobacco filler without burning it by an electric heater in the heating device. Is delivered to the user. As an electric heater, heaters of various shapes such as blade-shaped and rod-shaped have been put into practical use. When smoking or sucking, a heated cigarette is heated by inserting an electric heater from the tip surface of the tobacco rod. It is attached to.

Special Table 2010-514435 Japanese Patent Publication No. 2011-507538 Japanese Unexamined Patent Publication No. 11-266850 Special Table 2010-514438

However, in conventional heat-not-burn tobacco, the insertion resistance when inserting the electric heater from the tip surface of the tobacco rod is large, and the electric heater may break or bend when inserted into the tobacco rod (tobacco filler). , The tobacco filler forming the tobacco rod may be pushed toward the mouthpiece side, or the tobacco rod may buckle and deform. However, the fact is that a manufacturing device capable of drilling a cavity for inserting a heater into the tip of a tobacco rod by post-processing has not yet been proposed. The term "post-processing" as used herein means not a continuum of tobacco rods obtained by forming a rod-shaped body in a continuous rod-shaped machine, but a tip of a tobacco rod after being individually cut through cutting of the tobacco rod-shaped body. Refers to perforating a cavity.

Here, Patent Documents 1 to 4 disclose techniques for manufacturing an apparatus and a manufacturing method for a continuous body of tobacco rods having a hollow passage extending through the rods. For example, Patent Document 1 discloses a manufacturing apparatus for manufacturing a continuum of hollow core tobacco rods, and forms a hollow passage when the tobacco chopped on the wrapping paper is wound into a rod shape by a ganicha. It is disclosed that by arranging the mandrel in the portion, a hollow core is formed along the axial direction at the center of the cross section of the continuous body of the tobacco rod.

Further, Patent Documents 2 to 4 disclose a technique for simultaneously winding a hollow tube and a tobacco chop in a manufacturing apparatus for forming a coaxial hollow core tobacco rod. However, in all of the techniques disclosed in Patent Documents 1 to 4, when manufacturing a continuum of tobacco rods, a hollow core extending along the axial direction of the continuum is formed in advance, or a hollow tube is formed. Is a technique for inserting in advance. Therefore, in the tobacco rod obtained by cutting a continuous body of the tobacco rods to a predetermined length, a cavity can be formed only in a manner of penetrating the tobacco rod in the axial direction. It is not possible to form a non-penetrating cavity on the tip side. Therefore, in order to form a non-penetrating cavity at the tip of the tobacco rod, it is necessary to drill the cavity at the tip of the tobacco rod by post-processing, but such a device does not yet exist. Moreover, in the first place, the idea itself of perforating a cavity at the tip of the tobacco rod by post-processing (for the tobacco rod after being individually cut instead of the tobacco continuum) is new.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a technique capable of post-processing a cavity with respect to the tip of a tobacco rod in heat-not-burn tobacco. is there.

The present invention for solving the above problems is a perforation drum device for perforating a cavity in a heated tobacco rod, and holds the heated tobacco so that the axial direction of the tobacco rod is along the drum rotation axis. A rotary drum portion having a holding portion on the outer peripheral surface, and a drilling unit provided on the rotating drum portion to drill the tip of a tobacco rod in the heated tobacco held in the holding portion in the process of transporting the heated tobacco. The perforation unit is provided with a cam portion provided on the rotary drum base portion attached to the rotary drum portion, and the perforation unit orbits in synchronization with the rotary drum portion and is parallel to the drum rotation axis. A perforation slider having a extending slide rod and a perforation needle portion arranged on the outer peripheral side of the rotary drum portion and being held by the slide rod so as to be reciprocally slidable along the axial direction of the slide rod, and the perforation. The perforation slider is provided along the axial direction of the slide rod by being provided on the slider, engaging with the cam portion, and being guided by the cam portion when rotating around the rotating drum portion. It has a cam follower that slides back and forth, and the cam portion has at least an insertion section that guides the cam follower so that the perforation needle portion is inserted into the tobacco rod from the tip, and the perforation needle portion is a cigarette. Includes a pull-out section that guides the cam follower to pull out from the rod.

Further, the cam portion may have a guide rail that extends in an arc shape around the drum rotation axis and can accept the cam follower.

Further, the guide rails may be arranged in an annular shape around the drum rotation axis.

Further, the guide rail has a three-dimensional curved shape having an equidistant dimension from the drum rotation axis, and at least a part thereof is an inclined guide portion inclined with respect to a virtual orthogonal plane orthogonal to the drum rotation axis. The insertion section and the pull-out section may be formed by the inclined guide portion.

Further, the tilt guide portion includes at least one of a constant speed slide region in which the tilt angle with respect to the virtual orthogonal plane is constant and a speed change slide region in which the tilt angle with respect to the virtual orthogonal plane is not constant (that is, changes). You can stay.

Further, the inclination angle of the extraction section with respect to the virtual orthogonal plane may be smaller than the inclination angle of the insertion section with respect to the virtual orthogonal plane.

Further, the rotating drum base may have a cylindrical housing coaxial with the drum rotating shaft, and the guide rail may be provided along the outer peripheral surface of the cylindrical housing.

Further, the cam portion may be longer in the pull-out section than in the insert section.

Further, the cam portion is arranged in an annular shape around the drum rotation axis, and a direction vector of a first virtual perpendicular line extending from the start position of the insertion section toward the drum rotation axis and the end of the insertion section. The direction of the third virtual perpendicular line extending from the start position of the drawing section toward the drum rotation axis as compared with the first central angle φ1 formed by the direction vector of the second virtual perpendicular line extending from the position toward the drum rotation axis. The second central angle φ2 formed by the vector and the direction vector of the fourth virtual perpendicular line extending from the end position of the drawing section toward the drum rotation axis may be large.

Further, the cam portion is arranged in an annular shape around the drum rotation axis, and the direction vector of the first virtual perpendicular line extending from the start position of the insertion section toward the drum rotation axis and the end of the insertion section. The first central angle φ1 formed by the direction vector of the second virtual perpendicular line extending from the position toward the drum rotation axis may be 10 ° or more and 120 ° or less.

Further, the cam portion is arranged in an annular shape around the drum rotation axis, and a direction vector of a third virtual perpendicular line extending from the start position of the drawing section toward the drum rotation axis and the end of the drawing section. The second central angle φ2 formed by the direction vector of the fourth virtual perpendicular line extending from the position toward the drum rotation axis may be 10 ° or more and 180 ° or less.

Further, the cam portion is maintained in a state in which the perforation needle portion is inserted into the tobacco rod by maintaining the perforation slider in a position with respect to the slide rod between the insertion section and the withdrawal section. It may include an insertion state localization section that guides the cam follower so as to be performed.

Further, the diameter of the perforated needle portion may be 3.5 mm or less.

Further, the perforation slider has a slider body slidably attached to the slide rod, and a needle shaft portion that is rotatably held by the slider body and has the perforation needle portion attached to the tip side. The needle shaft portion and the perforated needle portion are coaxially arranged and rotatable about a rotation shaft parallel to the drum rotation shaft, and the rotation drum base rotates with the rotation of the rotation drum portion. The needle shaft portion is slid by sliding a predetermined contacted portion formed on the needle shaft portion while the cam follower of the operating perforation slider displaces at least a part of the insertion section. It may have a guide member extending in an arc shape about the drum rotation axis for rotation.

Further, the guide member comes into contact with the contacted portion while the cam follower of the drilling slider that orbits with the rotation of the rotating drum portion displaces at least a part of the drawn section. It may be formed as follows.

Further, the contacted portion is an annular roller portion coaxially and integrally provided with the needle shaft portion, and the needle shaft portion is caused by friction when the roller portion slides on the guide member. It may rotate.

Further, the guide member may have a plurality of divided guide portions obtained by dividing the guide member into a plurality of divided guide members, and the plurality of divided guide portions may be separated from each other.

Further, the holding portion is a holding groove having a concave shape capable of holding the tobacco rod, and the needle shaft of the drilling needle portion is a virtual perpendicular line extending from the center of the groove bottom in the holding groove toward the drum rotation axis. Passes through the intersection of the drum rotation axis with the drum rotation axis and a point located on a straight line passing through the groove bottom center and outside the groove bottom center, and extends parallel to the drum rotation axis. Is also good.

Further, the distance between the center of the groove bottom in the holding groove and the needle shaft in the perforated needle portion may be set to a size equal to or less than the diameter of the tobacco rod in the heat-not-burn tobacco held in the holding groove.

Further, the rotary drum portion has a first structure that suppresses the tobacco rod from falling off from the holding portion by abutting the end of the mouthpiece of the heated tobacco when the perforation needle portion is inserted into the tip of the tobacco rod. It may have a stopper member of.

Further, the rotary drum portion has a second stopper member that suppresses the heat-not-burn tobacco from falling off from the holding portion by contacting the tip of the tobacco rod when the perforated needle portion is pulled out from the tobacco rod. You may do it.

Further, the present invention can be specified as a drilling device including a plurality of drilling drum devices as described above. In this case, among the plurality of perforation drum devices, the needle diameter of the perforation needle portion provided in the perforation drum device located in the relatively rear stage is the perforation provided in the perforation drum device relatively located in the front stage. It may be larger than the needle diameter of the needle portion.

Further, among the plurality of perforation drum devices, the needle insertion depth dimension of the perforation needle portion provided in the perforation drum device located in the relatively rear stage is provided in the perforation drum device located in the relatively front stage. It may be larger than the needle insertion depth dimension of the perforated needle portion.

It should be noted that the means for solving the problems in the present invention can be adopted in combination as much as possible.

According to the present invention, it is possible to provide a technique capable of perforating a cavity portion by post-processing with respect to the tip of a tobacco rod in heat-not-burn tobacco.

FIG. 1 is a diagram schematically showing the internal structure of the heat-not-burn tobacco product according to the first embodiment. FIG. 2 is a diagram schematically showing a part of a drum row included in the filter chip attachment device according to the first embodiment. FIG. 3 is a diagram schematically showing a part of the perforated drum according to the first embodiment. FIG. 4 is a vertical cross-sectional view of the drilling drum device according to the first embodiment. FIG. 5 is a view taken along the arrow A shown in FIG. 4 according to the first embodiment. FIG. 6 is a front view of the control ring according to the first embodiment. FIG. 7 is a diagram illustrating a detailed configuration of the drilling unit according to the first embodiment. FIG. 8 is a top view of the drilling unit according to the first embodiment. FIG. 9 is a front view of the drilling unit according to the first embodiment. FIG. 10 is a diagram showing the relationship between the rotation angle of the rotating drum portion, the guide rail in the cam portion, and the movement locus of the needle tip position according to the first embodiment. FIG. 11 is a diagram for explaining the relationship between each section of the guide rail provided on the cam portion and the virtual orthogonal plane orthogonal to the drum rotation axis. FIG. 12 shows a first direction vector of the first virtual perpendicular line extending from the start end of the insertion section to the drum rotation axis in the guide rail, and a second direction vector of the second virtual perpendicular line extending from the end of the insertion section toward the drum rotation axis. The first central angle formed by, the third direction vector of the third virtual perpendicular line extending from the beginning of the drawing section toward the drum rotation axis, and the fourth direction vector of the fourth virtual perpendicular line extending from the end of the drawing section toward the drum rotation axis. It is a figure explaining the 2nd central angle of a perpendicular. FIG. 13 is a diagram illustrating the relationship between the needle shaft of the drilling needle portion and the holding groove in the drilling drum device. FIG. 14 is a diagram illustrating a modification of the first embodiment. FIG. 15 is a partially enlarged view of the second stop ring in the modified example of the first embodiment. FIG. 16 is a diagram illustrating a drilling device including a plurality of drilling drum devices incorporated in the filter tip attachment device.

Here, an embodiment of the drilling drum device and the drilling device according to the present invention will be described with reference to the drawings. The perforation drum device according to the present invention is a device for perforating a heater insertion cavity in the tip surface of a tobacco rod in heat-not-burn tobacco. Unless otherwise specified, the dimensions, materials, shapes, relative arrangements, etc. of the components described in the present embodiment are not intended to limit the technical scope of the invention to those. Absent.

<Embodiment 1>
[Heat-not-burn tobacco]
FIG. 1 is a diagram schematically showing an internal structure of a heat-not-burn tobacco 1 having a heater insertion cavity punched in a tip surface of a tobacco rod by the drilling drum device according to the first embodiment. Heat-not-burn tobacco 1 is a tobacco product that is combined with a heating device to form a heat-not-burn tobacco product. The heat-not-burn tobacco product consisting of the heat-not-burn tobacco 1 and the heating device heats the heat-not-burn tobacco filler without burning it by the electric heater of the heating device, and supplies the aerosol generated in the tobacco filler to the user. ..

The heat-not-burn tobacco 1 includes a tobacco rod 2 and a filter 3 arranged coaxially. The heat-not-burn tobacco 1 has a mouthpiece end 1a that the user inserts into the oral cavity during use, and a tip end 1b at the end opposite to the mouthpiece end 1a. The filter 3 has a support portion 4, an aerosol cooling portion 5, and a mouthpiece portion 6 arranged coaxially, and these members are arranged in order from the tip end side of the filter 3. The support portion 4, the aerosol cooling portion 5, and the mouthpiece portion 6 of the filter 3 are integrally wound by the winding paper 7. Further, the tobacco rod 2 and the filter 3 are integrally connected by being wound up by the chip paper 8.

When smoking or sucking the heat-not-burn tobacco 1, air is sucked by the user from the tip 1b to the mouthpiece end 1a through the heat-not-burn tobacco 1. The tip 1b of the heat-not-burn tobacco 1 can be regarded as the tip or the upstream end of the tobacco rod 2, and the mouthpiece end 1a of the heat-not-burn tobacco 1 can be regarded as the rear end or the downstream end of the mouthpiece portion 6.

The tobacco rod 2 is arranged at the tip 1b of the heat-not-burn tobacco 1. The tobacco rod 2 is a rod-shaped member wrapped with rolling paper 22 so as to cover the side surface of the tobacco filler 21 containing the tobacco raw material and the aerosol-producing base material. In the present embodiment, the tobacco material contained in the tobacco filler 21 may contain any one or more of chopped tobacco, tobacco granules, and reconstituted tobacco material.

The reconstituted tobacco material may be a reconstituted tobacco sheet that has been cut into small pieces or crushed into a granular or powdery form, or the reconstructed tobacco sheet that has been folded without being cut. There may be. The reconstituted tobacco sheet is obtained by kneading a binder, a gelling agent, a cross-linking agent, a fragrance, a viscosity modifier, etc. as additives with a tobacco raw material such as homogenized tobacco, for example, a slurry method (casting method) or a manufacturing method. , It is formed into a sheet by using an appropriate method such as a rolling method or an extrusion method. The reconstituted tobacco material is formed from, for example, tobacco materials such as tobacco stems, tobacco petioles, leaf pieces, and tobacco dust produced in the process of manufacturing tobacco products. The reconstituted tobacco material is a reconstituted tobacco sheet formed by a known method such as a slurry method, a papermaking method, a rolling method, etc., and is cut into small pieces or crushed into a granular or powdery form. Etc. are known. The homogenized tobacco is, for example, a tobacco material obtained by crushing, grinding and mixing leaf tobacco, dried tobacco leaves, chopped tobacco, swollen tobacco, regenerated tobacco and the like.

The leaf tobacco may be, for example, the leaves, leaf stalks, stems, flowers, etc. of the tobacco plants Nicotiana tabacum and Nicotiana rustica as cultivated species, and the tobacco plant Nicotiana genus as a wild species. Dried tobacco leaves are, for example, dried leaf tobacco. In addition, the swollen tobacco is, for example, a tobacco stem, petiole, vein, a part of mesophyll, etc. that is inflated by compression and decompression treatment. Regenerated tobacco is, for example, obtained by dissolving and straining dried leaf tobacco, chopped tobacco, or puffed tobacco fragments and dust that have been damaged in the tobacco manufacturing process.

Binders and gelling agents contained in the reconstituted tobacco slurry include, for example, natural polymers, gelatin, chondroitin phosphate, polysaccharides and polysaccharide salts (eg, alginate, carrageenan, gellan gum, guar gum, agarose, sorbitol, conversion). It may contain sugar, starch, dextrin, starch decomposition product, oxidized starch, etc.). The binder may contain, for example, an inorganic salt, a calcium salt, a calcium carbonate, a potassium salt, a potassium carbonate, a magnesium salt, a magnesium carbonate, a sodium salt, sodium carbonate, triethyl citrate, or the like. The fragrance may contain, for example, plant essential oil, leaf tobacco extract, leaf tobacco grinding solution, menthol, synthetic fragrance, natural fragrance, essential oil and the like. Further, the fragrance may have lipophilicity or hydrophilicity. Examples of the oil-based fragrance include vanillin, ethylvanillin, guarinalol, timolmethyl salicylate, linalool, eugenol, menthol, cloves, anis, cinnamon, bergamot oil, geranium, lemon oil, spearmint, ginger and the like. Examples of the hydrophilic fragrance include glycerin, propylene glycol, ethyl acetate, isoamyl alcohol and the like. The viscosity modifier may contain, for example, water, fats and oils, fatty acids, hydrophilic solvents, alcohols, ethanol, glycerin, propylene glycol and the like. Further, the reconstituted tobacco slurry may contain, for example, a moisturizing agent such as water, glycerin, and propylene glycol, and a reinforcing material such as tobacco fiber, tobacco cellulose fiber, wood pulp, cellulose fiber, and non-tobacco cellulose fiber. ..

Further, the reconstructed tobacco sheet includes a reconstructed tobacco slurry sheet (reconstructed tobacco cast sheet) formed by using an appropriate method such as a slurry method, a manufacturing method, a rolling method, etc., a reconstructed tobacco abstracted sheet, and a reconstructed tobacco rolling. It may be a sheet. For example, the reconstituted tobacco slurry sheet is a reconstituted tobacco sheet produced by drying and dehydrating the reconstituted tobacco slurry developed on a flat plate. The reconstituted tobacco papermaking sheet is a reconstituted tobacco sheet produced by blending pulp (cellulose fiber) with a reconstituted tobacco slurry and making paper. The reconstituted tobacco rolled sheet is a reconstituted tobacco sheet produced by rolling a reconstituted tobacco slurry into a sheet by a roller or the like and drying the sheet.

The aerosol-forming base material contained in the tobacco filler 21 is a substance that produces an aerosol when the volatile substance released by volatilization is cooled. The type of aerosol-forming base material is not particularly limited, and extracts from various natural products can be appropriately selected depending on the intended use. Examples of the aerosol-forming base material include glycerin, propylene glycol, triacetin, 1,3-butanediol, and a mixture thereof.

The support portion 4 is located immediately downstream of the tobacco rod 2 and is arranged in contact with the rear end of the tobacco rod 2. The support portion 4 may be, for example, a hollow cellulose acetate tube. In other words, the support portion 4 may be formed by penetrating a center hole in the center of the cross section of the columnar cellulose acetate fiber bundle. Further, as another form, the support portion 4 may be a paper filter filled with cellulose fibers, a paper tube, or the like. When the electric heater of the heating device to which the heat-not-burn tobacco 1 is applied is inserted into the tobacco rod 2, the support portion 4 has the tobacco filler 21 on the downstream side of the heat-not-burn tobacco 1 toward the aerosol cooling portion 5. It is an element to prevent being pushed into. The support portion 4 also functions as a spacer for separating the aerosol cooling portion 5 of the heat-not-burn tobacco 1 from the tobacco rod 2.

The aerosol cooling unit 5 is located immediately downstream of the support unit 4 and is arranged in contact with the rear end of the support unit 4. When smoking or sucking the heat-not-burn tobacco 1, the volatile substance released from the tobacco rod 2 (tobacco filler 21) flows toward the downstream side along the aerosol cooling unit 5. The volatile substances released from the tobacco rod 2 (tobacco filler 21) are cooled by the aerosol cooling unit 5 to form an aerosol inhaled by the user. In the form shown in FIG. 1, the aerosol cooling unit 5 is formed of a hollow paper tube having ventilation holes 5a into which external air can be introduced. However, the aerosol cooling unit 5 does not have to have the ventilation holes 5a.

The mouthpiece unit 6 is a segment located immediately downstream of the aerosol cooling unit 5. The mouthpiece portion 6 may be arranged in contact with the rear end of the aerosol cooling portion 5. In the form shown in FIG. 1, the mouthpiece portion 6 may include, for example, a filter material formed of cellulose acetate fibers formed into a columnar shape. Further, the mouthpiece portion 6 may be a center hole filter, a paper filter filled with cellulose fibers, or a paper tube containing no filter medium.

As shown in FIG. 1, a hollow heater insertion cavity portion 23 is opened on the tip surface 2a of the tobacco rod 2 (tobacco filler 21). The heater insertion cavity 23 is a recess along the axial direction of the tobacco rod 2 (tobacco filler 21). The heater insertion cavity 23 has a conical shape in which the diameter is reduced from the tip surface 2a (tip 1b) of the tobacco rod 2 (tobacco filler 21) toward the rear end side, but the diameter is reduced from the tip surface 2a to the rear end. It may have a truncated cone shape whose diameter decreases toward the side. The shape of the heater insertion cavity 23 is not particularly limited, and may have a shape other than a conical shape or a truncated cone shape. Reference numeral CL1 shown in FIG. 1 is the central axis of the tobacco rod 2. The heater insertion cavity 23 may be formed coaxially with the central axis CL1 of the tobacco rod 2.

In the heat-not-burn tobacco 1 configured as described above, since the heater insertion cavity portion 23 is formed in the tobacco rod 2 (tobacco filler 21), when the tobacco rod 2 is attached to the heating device, the tobacco rod 2 is used. The insertion resistance of the heater insertion cavity 23 with respect to (tobacco filler 21) can be reduced. This makes it possible to improve usability when the tobacco rod 2 is attached to the heating device (when the electric heater is inserted into the tobacco rod 2). Further, when the electric heater is inserted into the tobacco rod 2, it is possible to prevent the electric heater from being broken or buckling deformation of the tobacco rod 2. Further, since the tobacco rod 2 (tobacco filling material 21) is provided with the heater insertion cavity portion 23, the insertion resistance of the electric heater can be reduced. Therefore, when the electric heater is inserted into the tobacco rod 2, the tobacco filling material 21 is provided. It is possible to improve the heat conduction from the electric heater to the tobacco filler 21 by bringing the tobacco filler 21 and the electric heater into close contact with each other while more preferably suppressing the pressure from being pushed into the support portion 4 side. Further, when the tobacco rod 2 of the heat-not-burn tobacco 1 is pulled out from the heating device after smoking or suction, the frictional force generated between the electric heater and the tobacco filler 21 is small, so that the tobacco filler 21 is unlikely to fall off. Further, since the seizure of the tobacco filler 21 during smoking or suction is less likely to occur, it is possible to prevent the tobacco filler 21 from falling off when the tobacco rod 2 is pulled out from the heating device after smoking or suction.

[Punching drum device]
Next, the perforation drum device 70 for perforating the heater insertion cavity 23 with respect to the tobacco rod 2 in the heat-not-burn tobacco 1 will be described.

FIG. 2 is a diagram schematically showing a part of a drum row included in the filter chip attachment device 50 according to the first embodiment. 3 to 10 are views for explaining the drilling drum device 70 according to the first embodiment. The perforation drum device 70 is incorporated in the filter tip attachment device 50. The filter chip attachment device 50 includes a tobacco rod manufactured by a tobacco hoist (a mechanical device having a continuous rod shape) (not shown) and cut individually, and a filter rod manufactured by a filter manufacturing device (not shown). It is a device that receives and winds these up with a chip material (chip paper) to integrally attach them.

As shown in FIG. 2, the filter chip attachment device 50 uses, for example, two single tobacco rods 2 in the process of transporting the double tobacco rod DR received from the tobacco hoist (not shown) by a drum or the like (not shown). Cut to. The double tobacco rod DR is a rod-shaped member in which the tobacco filler 21 is wrapped with a wrapping paper 22 having twice the length of the tobacco rod 2. Hereinafter, the single tobacco rod 2 is simply referred to as "tobacco rod 2". The two tobacco rods 2 obtained by cutting the double tobacco rod DR are arranged in an axially separated state.

The filter tip attachment device 50 has a transport drum 51 that conveys the double filter rod DF. The double filter rod DF is a filter rod having twice the length of the filter 3, and is formed so that two filters 3 can be obtained by being bisected at the center. The double filter rod DF is conveyed to the hopper drum 52 by the transfer drum 51.

In the above-mentioned arrangement of the tobacco rods 2, an interval that can accept the filter 3 is formed between the two tobacco rods 2, and the filter 3 is supplied to the hopper drum 52 while maintaining this interval. At this time, the arrangement of the tobacco rods 2 accepts the double filter rod DF between the tobacco rods 2 and arranges them on the same axis as the double filter rod DF. The hopper drum 52 is provided with a pair of floating discs (not shown) on both sides in the direction of rotation, and as the hopper drum 52 rotates, each tobacco rod 2 is sandwiched between the floating discs on both sides and is spaced apart in the axial direction. Can be packed.

The filter chip attachment device 50 continuously feeds the web (hereinafter referred to as “chip paper web”) TW of the chip paper 8 wound on the bobbin in a roll shape, and applies glue to one side thereof. The chip paper web TW is cut into chip paper 8 of a predetermined length from the beginning. The cut chip paper 8 is supplied to the hopper drum 52 and sticks to the outer surfaces of the tobacco rod 2 and the double filter rod DF on the hopper drum 52. Then, the two tobacco rods 2, the double filter rod DF sandwiched between them, and the chip paper 8 attached to the outer surface thereof are supplied to the rolling drum 53 close to the hopper drum 52.

In the rolling drum 53, the tobacco rod 2 and the like are rolled on the outer peripheral surface of the rolling drum 53, and the tip paper 8 is made to follow the rolling, so that the double filter rod DF and the two rods arranged at both ends thereof are arranged. The tip paper 8 is wound around the outer surface of the tobacco rod 2. When the winding of the chip paper 8 is completed, the base ends of the double filter rod DF and the tobacco rods 2 on both sides thereof are glued so as to integrally wrap the chip paper 8, and the tobacco rods 2 are attached to both sides of the double filter rod DF. A connected double-wound DS is obtained.

The double-wound DS is delivered from the rolling drum 53 to the checking drum 54 as the next process. In the checking drum 54, a ventilation inspection of the double-wound DS is performed, and defective products such as a hole-wound product having a tear in the rolling paper and an excessive amount of dilution are eliminated. The double-wound DS that has passed the ventilation inspection is then passed from the checking drum 54 to the cutting drum 55. On the cutting drum 55, the double-wound DS is bisected at the center position of the double filter rod DF by a cutting knife (not shown), thereby separating the double-wound DS into two heat-not-burn tobacco 1. At this point, in the heat-not-burn tobacco 1, the tobacco rod 2 and the filter 3 are wound integrally with the chip paper 8, and the heater insertion cavity 23 is not yet perforated at the tip thereof.

The heat-not-burn tobacco 1 separated into two from the double-wound DS is sequentially delivered from the cutting drum 55 to the turning drum 56 and the drilling drum 60. The turning drum 56 has a large number of holding grooves on its outer peripheral surface, and one pair of heat-not-burn cigarettes 1 can be received in each of these holding grooves.

By separating the double-wound DS, the pair of heat-not-burn tobacco 1 is delivered from the cutting drum 55 to the turning drum 56 in a state of facing each other. In the turning drum 56, one direction of the pair of heat-not-burn tobacco 1 received while facing each other is reversed, and the turning drum 56 is displaced so as to be positioned in the same row as the other heat-not-burn tobacco 1 on the outer peripheral surface thereof. After that, the heat-not-burn tobacco 1 is sequentially conveyed toward the drilling drum 60. The perforated drum 60 is perforated with respect to the tip surface 2a of the tobacco rod 2 in the transport process until the heated tobacco 1 received from the front drum is delivered to the rear drum 59, and is used for inserting the heater described with reference to FIG. The cavity 23 is formed. The perforation drum 60 constitutes a part of the perforation drum device 70.

FIG. 3 is a diagram schematically showing a part of the drilling drum 60 according to the first embodiment. As will be described in detail later, the perforated drum 60 has a large number of holding grooves on its outer peripheral surface, and one heat-not-burn tobacco 1 having a tobacco rod 2 is received in each holding groove. Suction air is supplied to the holding groove in the drilling drum 60, and the heat-not-burn tobacco 1 received in the holding groove is sucked and held in the holding groove. Further, the drilling drum 60 is provided with a needle member 240 for drilling on the extension of each holding groove in the extending direction. The perforation drum 60 is perforated by inserting a needle member 240 for perforation from the tip surface 2a of the tobacco rod 2 in the process of transporting the heat-not-burn tobacco 1. As a result, a heated tobacco 1 having a tobacco rod 2 in which the heater insertion cavity 23 is perforated is obtained.

FIG. 4 is a vertical sectional view of the drilling drum device 70 according to the first embodiment. FIG. 4 shows the vertical and front-back directions of the drilling drum device 70 for convenience. The perforated drum device 70 includes a perforated drum 60, a fixed housing 80, a frame member 90 that supports them, and the like. The frame member 90 has a bottom plate frame portion 91, a rear frame portion 92, a front frame portion 93, and the like. The rear frame portion 92 and the front frame portion 93 are frame members that are erected above the bottom plate frame portion 91.

The fixed housing 80 is an immovable fixing member fixed to the rear frame portion 92 of the frame member 90, and is attached to the perforated drum 60. The fixed housing 80 corresponds to the base of the rotating drum. FIG. 5 is a view taken along the arrow A shown in FIG. The fixed housing 80 is a housing member having a substantially cylindrical shape, and the inside is hollow. Reference numeral 81 is a hollow portion of the fixed housing 80. Reference numeral CL2 is a rotation axis of the drilling drum 60. In the present embodiment, the fixed housing 80 is arranged so as to be coaxial with the rotation axis (hereinafter, also referred to as “drum rotation axis”) CL2 of the perforated drum 60, and the central axis of the fixed housing 80 is the drum rotation axis CL2. Is consistent with.

Bearing housings

110A and 110B are attached to both ends of the fixed housing 80 along the axial direction, and the

bearing housings

110A and 110B rotatably support the rotary drive shaft 100 for rotationally driving the drilling drum 60. ing. The central axis of the rotary drive shaft 100 coincides with the drum rotary shaft CL2. The bearing

housings

110A and 110B rotatably support the rotary drive shaft 100 by means of bearings or the like. Further, a timing pulley 120 is attached to the rear end side of the rotary drive shaft 100. A timing belt (not shown) is hung around the timing pulley 120. The timing belt is also hung on a motor-side pulley (not shown) attached to the rotating shaft of the drive motor (not shown), and the rotational output of the drive motor is transmitted to the timing pulley 120 via the timing belt. By doing so, the rotary drive shaft 100 is rotationally driven.

The perforated drum 60 is a substantially bottomed cylindrical drum, and has a bottom plate portion 61 and a cylindrical rotating drum portion 62 which is a side peripheral wall erected from the bottom plate portion 61. A plurality of holding grooves (holding portions) 63 are formed at regular intervals on the outer peripheral surface 62A of the rotating drum portion 62 in the circumferential direction (see FIG. 5). The holding groove 63 is a recess that can receive the heat-not-burn tobacco 1 (tobacco rod 2), and has, for example, a semicircular shape. The number of holding grooves 63 is not particularly limited, but in the example shown in FIG. 5, 20 holding grooves 63 are provided at regular intervals on the outer peripheral surface 62A of the rotating drum portion 62. Further, the holding groove 63 of the rotating drum portion 62 extends in parallel with the drum rotating shaft CL2. Therefore, the holding groove 63 of the rotating drum portion 62 can hold the heat-not-burn tobacco 1 (tobacco rod 2) so that the direction of the central axis CL1 of the tobacco rod 2 is along the drum rotating axis CL2.

Further, as shown in FIG. 5, the bottom of each holding groove 63 is provided with a suction hole 63A for supplying suction air for sucking the heat-not-burn tobacco 1 received in each holding groove 63. .. Inside the rotary drum portion 62 of the perforated drum 60, a first suction passage 64 having one end connected to the suction hole 63A extends in the radial direction of the rotary drum portion 62 (see FIGS. 4, 5 and the like). ).

As shown in FIG. 4, each holding groove 63 in the rotary drum portion 62 is provided with suction holes 63A at three locations, and a first suction passage 64 is connected to each suction hole 63A. However, the number of suction holes 63A formed in each holding groove 63 is not particularly limited. In the rotating drum portion 62, a second suction passage 65 connected to the other end of each first suction passage 64 extends along the drum rotation axis CL2 direction. The second suction passage 65 is open at the front end surface 62B of the rotating drum portion 62. Reference numeral 65A is an opening hole through which the second suction passage 65 opens in the front end surface 62B of the rotating drum portion 62. As shown in FIG. 5, opening holes 65A are arranged in an annular shape on the front end surface 62B of the rotating drum portion 62 at regular intervals in the circumferential direction.

A disc plate 130 is integrally attached to the front end side of the rotary drive shaft 100. The disc plate 130 of the rotary drive shaft 100 is integrally fastened to the end plate 140 via a connecting pin. Further, the end plate 140 is integrally fastened to the bottom plate portion 61 of the drilling drum 60 via a connecting pin. As described above, the rotary drive shaft 100 in the present embodiment is integrally fixed to the bottom plate portion 61 of the drilling drum 60 via the disc plate 130 and the end plate 140. As a result, the rotary drive shaft 100 rotates, so that the drilling drum 60 is rotationally driven in synchronization with the rotary drive shaft 100. As shown in FIG. 4, since the bearing 160 is interposed between the inner peripheral surface of the perforated drum 60 on the rear end side of the rotary drum portion 62 and the outer peripheral surface of the fixed housing 80, the rotary drive The drilling drum 60 can be smoothly rotationally driven in synchronization with the shaft 100. Further, in the present embodiment, for convenience, a case where the perforation drum device 70 is viewed from the front side and the perforation drum 60 is rotationally driven counterclockwise will be described as an example.

Next, the perforated drum 60 in the perforated drum device 70 and the control ring 150 provided on the front side of the fixed housing 80 will be described. A front plate 94 is attached to the front frame portion 93 of the frame member 90, and the ring holder 95 is fixed to the front plate 94. A control ring 150 is fixed to the ring holder 95. The control ring 150 is an annular member whose center is arranged so as to coincide with the drum rotation axis CL2, and the ring holder 95 has a rear surface 150A facing the front end surface 62B of the rotation drum portion 62 of the perforated drum 60. It is fixed. In the present embodiment, the perforation drum 60 is rotationally driven while the front end surface 62B of the rotary drum portion 62 is in sliding contact with the rear surface 150A of the control ring 150. Here, on the rear surface 150A of the control ring 150, a suction supply channel 151 for supplying suction air to each second suction passage 65 in the rotary drum portion 62 is recessed in a groove shape.

FIG. 6 is a front view of the control ring 150 according to the first embodiment. Reference numeral 150B shown in FIG. 6 is the front surface of the control ring 150. In the control ring 150, the suction supply channel 151 is open to the rear surface 150A. Further, the suction supply channel 151 extends in an arc shape along the circumferential direction of the control ring 150, and is formed over substantially half the circumference of the control ring 150 in the present embodiment. However, the range in which the suction supply channel 151 is formed in the control ring 150 can be appropriately changed. Reference numeral 152 shown in FIG. 6 is a suction port for supplying suction pressure to each second suction passage 65 in the rotary drum portion 62. The suction port 152 is open to the front surface 150B of the control ring 150 and communicates with the suction supply channel 151.

Further, reference numeral 153 is an atmospheric opening hole for supplying atmospheric pressure to each second suction passage 65 in the rotating drum portion 62. The atmosphere opening hole 153 extends from the front surface 150B of the control ring 150 to the rear surface 150A and penetrates the control ring 150 in the thickness direction, and is open to the atmosphere. Reference numeral 154 is a blow air supply hole for supplying blow air to each second suction passage 65 in the rotary drum portion 62. The blow air supply hole 154 hangs from the front surface 150B of the control ring 150 to the rear surface 150A and penetrates the control ring 150 in the thickness direction. Here, reference numeral 155 shown in FIG. 5 is an elbow pipe connected to the suction port 152 of the control ring 150. Reference numeral 156 is an elbow pipe connected to the blow air supply hole 154 of the control ring 150. A suction pressure is supplied to the elbow pipe 155 from a suction source (not shown) via a tube or the like. Further, air for air blowing is supplied to the elbow pipe 156 from an air supply source (not shown) via a tube or the like.

In FIG. 6, reference numeral 151A is the start end of the suction supply channel 151, and reference numeral 151B is the end end of the suction supply channel 151. While the perforation drum 60 is rotationally driven, suction pressure is introduced into the suction supply channel 151 of the control ring 150 via each elbow pipe 155 and suction port 152 shown in FIG. In the present embodiment, the radial separation distance between the suction supply channel 151 and the drum rotating shaft CL2 in the control ring 150 and the diameter between each second suction passage 65 and the drum rotating shaft CL2 in the rotating drum portion 62. The separation distances in the directions are set to equal dimensions. Therefore, when the perforated drum 60 is rotationally driven, suction is performed while each second suction passage 65 in the rotary drum portion 62 communicates with the suction supply channel 151 of the control ring 150, that is, from the suction start position shown in FIG. A suction pressure is supplied to the suction hole 63A of the holding groove 63 through the second suction passage 65 and the first suction passage 64 which are in communication with the suction supply channel 151 over the suction section up to the end position. As a result, the suction pressure acts from the suction hole 63A on the holding groove 63 located in the suction section of the control ring 150.

The perforated drum 60 in the present embodiment sucks the heated tobacco 1 by receiving the heated tobacco 1 from the turning drum 56 in the previous stage when each holding groove 63 of the perforated drum 60 reaches the rotation angle 0 °. It may be designed to hold and deliver the heat-not-burn tobacco 1 held in the holding groove 63 to the drum 59 in the subsequent stage when each holding groove 63 reaches the rotation angle 180 ° (FIG. 6). reference). In the example shown in FIG. 6, the supply of suction pressure to the suction hole 63A ends when each holding groove 63 of the drilling drum 60 reaches a rotation angle of 170 °. Then, after the suction holes 63A of each holding groove 63 are opened to the atmosphere, the heat-not-burn tobacco 1 held in the holding groove 63 is delivered to the drum 59 in the subsequent stage. In the perforated drum 60, after the heat-not-burn tobacco 1 sucked and held in each holding groove 63 is delivered to the drum 59 in the subsequent stage, the suction holes 63A of each holding groove 63 are the first suction passage 64 and the second suction passage 65. Blow air is supplied to the suction hole 63A at the timing of communicating with the blow air supply hole 154 through the suction hole 63A. The injection pressure of the blow air is used for cleaning the first suction passage 64, the second suction passage 65, and the like corresponding to the holding grooves 63 of the drilling drum 60. The timings of suction, opening to the atmosphere, and blow air described above are exemplary and can be changed as appropriate.

As shown in FIGS. 4 and 5, the perforation drum device 70 in the present embodiment includes a guide plate 180 for guiding the heat-not-burn tobacco 1 sucked and held in each holding groove 63 of the perforation drum 60. .. The guide plate 180 is supported by a stud 185 fixed to the rear frame portion 92. Reference numeral 186 shown in FIGS. 4 and 5 is an annular stop ring attached to the outer peripheral surface 62A of the rotating drum portion 62, and is arranged in front of the holding groove 63. The stop ring 186 abuts on the mouthpiece end 1a (end surface on the filter 3 side) of the heat-not-burn tobacco 1 sucked and held in each holding groove 63 to provide a contact surface 186A for positioning the heat-not-burn tobacco 1. It is the first stopper member to have (see FIG. 7).

Next, the perforation unit 200 for perforating the tobacco rod 2 in the heat-not-burn tobacco 1 held in each holding groove 63 will be described. As shown in FIG. 3, the drilling unit 200 is provided in the rotary drum portion 62, and is held in the holding groove 63 during the transfer process of the heat-not-burn tobacco 1 (tobacco rod 2) by the rotary drum portion 62. This is a unit for drilling the tip surface of the tobacco rod 2 in the formula tobacco 1. The drilling unit 200 includes a pair of

slide rods

210 and 210 provided on the rotary drum portion 62 and a drilling slider 220 slidably held by the pair of slide rods 210 and 210 (see FIG. 3). FIG. 7 is a diagram illustrating a detailed configuration of the drilling unit 200. FIG. 8 is a top view of the drilling unit 200. FIG. 9 is a front view of the drilling unit 200.

Each slide rod 210 is projected forward from the rear end surface 62C of the rotating drum portion 62 so as to extend in parallel with the drum rotating shaft CL2. In the present embodiment, the pair of

slide rods

210 and 210 are arranged so that the two holding grooves 63 are included in the region sandwiched between the pair of

slide rods

210 and 210 in the circumferential direction of the rotary drum portion 62. Each slide rod 210 is configured to rotate in synchronization with the rotating drum portion 62 of the drilling drum 60.

The perforation slider 220 has a slider body 230 (see FIG. 3) slidably attached to a pair of

slide rods

210 and 210, and a pair of

needle members

240 and 240 attached to the slider body 230. The slider body 230 functions as a casing for holding the pair of

needle members

240, 240. The slider body 230 has a pair of

rod mounting portions

231 and 231 that are slidably held with respect to the pair of

slide rods

210 and 210, and a connecting portion 232 that connects the pair of

rod mounting portions

231 and 231. For example, each rod mounting portion 231 has a slide ball bearing or the like interposed between the rod mounting portion 231 and the slide rod 210, and is reciprocally slidable with respect to the slide rod 210. In this way, the slider body 230 in the drilling slider 220 is mounted so as to be bridged between the pair of

slide rods

210 and 210, and is slidable back and forth with respect to the pair of

slide rods

210 and 210. ..

Further, as shown in FIG. 3, the slider main body 230 has a pair of

needle holding portions

233 and 233 for holding the needle member 240. The pair of

needle holding portions

233 and 233 are formed in the vicinity of both ends in the left-right direction of the slider main body 230, respectively. The needle member 240 includes a needle shaft portion 241 and a perforated needle portion 242 attached to the tip end side of the needle shaft portion 241. The needle shaft portion 241 has a cylindrical shape. The shape of the perforation needle portion 242 is not particularly limited, but the perforation needle portion 242 has a needle shape with a sharp tip so as to be suitable for perforating the heater insertion cavity portion 23 with respect to the tobacco rod 2. Further, as will be described later, in the present embodiment, when the heater insertion cavity 23 is perforated in the tobacco rod 2, the perforation needle portion 242 is perforated in the tobacco rod 2 while rotating, so that the perforation needle portion 242 is perforated. The tip side of is conical. Further, the perforated needle portion 242 and the needle shaft portion 241 of the needle member 240 are coaxially arranged. Further, as shown in FIG. 4, the perforated needle portion 242 of the needle member 240 is arranged on the outer peripheral side of the rotating drum portion 62 of the perforated drum 60.

In the present embodiment, the needle shaft portion 241 of each needle member 240 is rotatably held with respect to each needle holding portion 233. Here, the central axis (needle shaft) CL3 of each needle member 240 (needle shaft portion 241 and drilling needle portion 242) is parallel to the drum rotating shaft CL2, and the holding groove of the rotating drum portion 62 in the drilling drum 60. It is coaxial with the central axis CL1 of the tobacco rod 2 in the heat-not-burn tobacco 1 sucked and held by 63.

Further, an annular roller portion 243 (contacted portion) that comes into contact with the roller guide 170 (see FIG. 4) is provided on the base end side of the needle shaft portion 241 of each needle member 240. In this embodiment, the roller guide 170 corresponds to the guide member. The roller portion 243 is an annular member having an outer peripheral surface having an outer diameter larger than that of the needle shaft portion 241. As shown in FIG. 4, the roller guide 170 is attached to the rear frame portion 92 of the frame member 90. The roller guide 170 extends in an arc shape about the drum rotation axis CL2.

Here, as shown in FIG. 9, the roller guide 170 is divided into a first roller guide portion 170A to a third roller guide portion 170C, and the roller guide portions 170A to 170C are separated from each other in the rear frame. It is fixed to the part 92. In the present embodiment, the first roller guide portions 170A to the third roller guide portions 170C correspond to a plurality of divided guide portions. Further, the first roller guide portion 170A to the third roller guide portion 170C of the roller guide 170 have a guide surface 171 having an arc shape centered on the drum rotation shaft CL2. When the drilling slider 220 orbits in synchronization with the rotating drum portion 62, the roller portion 243 of the needle member 240 in the drilling slider 220 is a roller guide 170 (first roller guide portion 170A to third roller guide portion 170C). It slides with respect to the guide surface 171. At that time, the friction when the roller portion 243 of the needle member 240 slides with the guide surface 171 of the roller guide 170 generates a rotational torque that rotates the needle shaft portion 241 around the central axis CL3 of the needle member 240. , The needle member 240 rotates around the central axis CL3. In this way, in the present embodiment, the needle member 240 can be rotated while the roller portion 243 of the needle member 240 in the drilling slider 220 is in contact with the guide surface 171 of the roller guide 170.

Next, a configuration for sliding-driving the drilling slider 220 along the axial direction of the slide rod 210 (that is, along the drum rotating shaft CL2) in synchronization with the rotational driving of the rotating drum portion 62 will be described. As shown in FIG. 7, a cam follower 250 that engages with a cam portion 82 formed on the outer peripheral portion of the fixed housing 80 (rotary drum base) is provided on the lower surface of the slider main body 230. As shown in FIG. 8, the cam follower 250 is arranged at a substantially central portion of the slider main body 230, and as shown in FIG. 7 and the like, the cam follower 250 protrudes from the slider main body 230 toward the outer peripheral surface of the fixed housing 80. It is set up. The shape of the cam follower 250 is not particularly limited, but in the present embodiment, it has a substantially cylindrical shape.

Next, the cam portion 82 formed on the outer peripheral portion of the fixed housing 80 will be described. As shown in FIGS. 4 and 7, a cam portion 82 that engages with the cam follower 250 provided on the drilling slider 220 is provided on the outer peripheral surface of the fixed housing 80 on the rear end side. It can also be said that the cam portion 82 forms the outer peripheral surface of the fixed housing 80. Further, the cam portion 82 has an arc-shaped guide rail 821 formed so that a recess 820 that can accept (fit) the cam follower 250 extends in the circumferential direction of the fixed housing 80. In the present embodiment, the guide rails 821 are arranged in an annular shape around the drum rotation shaft CL2. In other words, the guide rail 821 is provided over the entire circumference of the outer peripheral surface of the fixed housing 80. Further, the guide rail 821 has a three-dimensional curved shape having an equidistant dimension from the drum rotation shaft CL2. The perforation slider 220 rotates around the drum rotation shaft CL2 with the rotation drive of the rotation drum portion 62 in a state where the cam follower 250 is engaged with the guide rail 821 of the cam portion 82. At that time, by guiding the cam follower 250 along the guide rail 821, the perforation slider 220 can be reciprocally slid along the axial direction of the slide rod 210. The details of the sliding operation of the drilling slider 220 will be described later.

As described above, the drilling slider 220 in this embodiment includes two needle members 240. Therefore, as shown in FIG. 9, ten perforation sliders 220, which is half the number of holding grooves 63 provided in the rotary drum portion 62, are arranged in an annular shape in the rotary drum portion 62. The central axis CL3 of each needle member 240 in each drilling slider 220 is coaxial with the central axis CL1 of the heat-not-burn tobacco 1 (tobacco rod 2) held in the corresponding holding groove 63. That is, the needle member 240 is arranged coaxially with respect to the heat-not-burn tobacco 1 (tobacco rod 2) held in all the holding grooves 63 formed in the rotary drum portion 62, so that the tobacco rod 2 The perforated needle portion 242 is arranged so as to face the tip surface 2a. Reference numeral 190 shown in FIGS. 7 and 9 is an annular ring member provided on the rotating drum portion 62 to connect the rear end portions of the slide rods 210 to each other.

Next, the details of the sliding operation of the drilling slider 220 will be described. FIG. 10 is a diagram showing the relationship between the rotation angle of the rotating drum portion 62, the guide rail 821 of the cam portion 82, and the movement locus of the tip position (hereinafter, referred to as “needle tip position”) PN of the drilling needle portion 242.

As shown in FIG. 10, the guide rail 821 in the cam portion 82 has a retracted state localization section R1, an insertion state localization section R2, an insertion state localization section R3, and a pull-out section R4. The “forward” shown in FIG. 10 means the front along the drum rotation axis CL2, and corresponds to the “forward” shown in FIG. The “rear” shown in FIG. 10 means the rear along the drum rotation axis CL2, and corresponds to the “rear” shown in FIG. Further, the drum rotation angle shown in FIG. 10 corresponds to the rotation angle of the rotating drum portion 62 described with reference to FIG.

As described above, the rotating drum portion 62 of the perforated drum 60 sucks the heat-not-burn tobacco 1 into the holding groove 63 in the section corresponding to the rotation angle of 0 ° to 180 ° (hereinafter, also referred to as “transport section”). Transport in the state. Hereinafter, the position where the rotation angle corresponding to 0 °, which is the start point of the transport section, is defined as the “transport start position”, and the position where the rotation angle, which is the end point of the transport section, corresponds to 180 ° is defined as the “transport end position”. To do. As shown in FIG. 10, in the retracted state localization section R1 and the insertion state localization section R3 of the guide rail 821, the position of the cam follower 250 on the displacement axis parallel to the drum rotation axis CL2 (hereinafter referred to as “slide axis”) is located. This is a section that guides the cam follower 250 so that it does not displace even if the rotation angle increases. The inserted state localization section R3 is located forward by a predetermined slide displacement amount δ1 with respect to the retracted state localization section R1. Further, the insertion section R2 of the guide rail 821 is a section that guides the cam follower 250 so that the position of the cam follower 250 on the slide axis is displaced forward as the rotation angle increases. Further, the pull-out section R4 is a section that guides the cam follower 250 so that the position of the cam follower 250 on the slide axis is displaced rearward as the rotation angle increases.

In the guide rail 821 of the present embodiment, the section corresponding to the rotation angle of the rotating drum portion 62 of 165 ° to 15 ° is the retracted state localization section R1, and the section corresponding to the rotation angle of 15 ° to 65 ° is the insertion section R2. The section corresponding to the rotation angle of 65 ° to 115 ° is formed as the insertion state localization section R3, and the section corresponding to the rotation angle of 115 ° to 165 ° is formed as the extraction section R4. Therefore, from the transport start position to the transport end position, the cam follower 250 has the retracted state localization section R1 (rotation angle 0 ° to 15 °), the insertion section R2 (rotation angle 15 ° to 65 °), and the insertion state on the guide rail 821. It is sequentially guided by the localization section R3 (rotation angle 65 ° to 115 °), the pull-out section R4 (rotation angle 115 ° to 165 °), and the retracted state localization section R1 (rotation angle 165 ° to 180 °).

The reference numeral VP shown in FIG. 10 represents a virtual orthogonal plane orthogonal to the drum rotation axis CL2. FIG. 11 is a diagram illustrating the relationship between each section R1 to R4 of the guide rail 821 provided on the cam portion 82 and the virtual orthogonal plane VP orthogonal to the drum rotation axis CL2. As described above, the guide rail 821 has a three-dimensional curved shape having an equidistant dimension from the drum rotation shaft CL2. As shown in FIG. 11, the retracted state localization section R1 and the insertion state localization section R3 in the guide rail 821 are formed as parallel guide portions 821A parallel to the virtual orthogonal plane VP. The parallel guide portion 821A in the guide rail 821 exists in a virtual plane parallel to the virtual orthogonal plane VP. More specifically, the parallel guide portion 821A (retracted state localization section R1 and insertion state localization section R3) is a first coordinate axis (Z axis in the example shown in FIG. 11) which is one seating axis in the three-dimensional Cartesian coordinate system XYZ. ) Is the drum rotation axis CL2, the coordinates (z coordinate) of the first coordinate axis (Z axis) are constant over the entire section of the parallel guide portion 821A. On the other hand, the insertion section R2 and the pull-out section R4 of the guide rail 821 are formed as inclined guide portions 821B which are inclined (non-parallel) with respect to the virtual orthogonal plane VP. The tilt guide portion 821B (insertion section R2 and extraction section R4) is the first coordinate axis (Z axis) when the first coordinate axis (Z axis in FIG. 11) in the three-dimensional Cartesian coordinate system XYZ is the drum rotation axis CL2. ) Is not constant (changes) along the extending direction of the tilt guide portion 821B. In the present embodiment, at least a part of the guide rail 821 may be formed as an inclined guide portion 821B, and the inclined guide portion 821B forms an insertion section R2 and a pull-out section R4.

In the present embodiment, the drilling slider 220 in each drilling unit 200 is held by the slide rod 210 so as to be reciprocally slidable along the drum rotation axis CL2. Therefore, when the perforation unit 200 (perforation slider 220) orbits around in synchronization with the rotation of the rotary drum portion 62, the cam follower 250 guided by the guide rail 821 is displaced along the drum rotation axis CL2 (slide axis). , The drilling slider 220 slides and displaces along the drum rotation axis CL2 (slide axis) in conjunction with the displacement of the cam follower 250. Since the needle member 240 is held by the drilling slider 220, the needle member 240 held by the drilling slider 220 is also held by sliding displacement of the drilling slider 220 along the drum rotation axis CL2 (slide axis). It slides and displaces along the drum rotation axis CL2 (slide axis). As a result, as shown in FIG. 10, the needle tip position PN of the drilling needle portion 242 in the needle member 240 follows the displacement of the cam follower 250 along the drum rotation shaft CL2 (slide shaft). Displace along (slide axis).

In the present embodiment, as shown in FIG. 10, the needle tip position PN of the perforation needle portion 242 is behind the tip position of the tobacco rod 2 in a state where the cam follower 250 is guided by the retracted state localization section R1. It is maintained in the retracted position. That is, while the cam follower 250 is guided by the retracted state localization section R1, the needle tip position PN of the drilling needle portion 242 is maintained in a state of being separated from the tip surface 2a of the tobacco rod 2.

Next, when the engagement position of the cam follower 250 shifts from the retracted state localization section R1 on the guide rail 821 to the insertion section R2, the cam follower 250 moves along the drum rotation axis CL2 (slide axis) as the rotation angle increases. And displace forward. Therefore, while the cam follower 250 is guided by the insertion section R2, the needle tip position PN of the drilling needle portion 242 is forward along the drum rotation axis CL2 (slide axis), that is, the tip surface of the tobacco rod 2. It gradually displaces in the direction approaching 2a. In the present embodiment, in the process in which the cam follower 250 is guided by the insertion section R2, the above-mentioned slide displacement amount δ1 is inserted so that the perforation needle portion 242 is inserted from the tip surface 2a of the tobacco filler 21 in the tobacco rod 2. The size of is set. That is, the insertion section R2 in the guide rail 821 is formed as a section that guides the cam follower 250 so that the perforation needle portion 242 is inserted into the tobacco rod 2 from the tip surface 2a. In this way, the tip surface 2a of the tobacco rod 2 (tobacco filler 21) is perforated by the perforation needle portion 242 to form the heater insertion cavity portion 23 in the tobacco rod 2 (tobacco filler 21). Can be done.

The slide stroke (hereinafter referred to as "needle slide stroke") δ3 of the needle member 240 (perforated needle portion 242) is substantially equal to the slide displacement amount δ1. Therefore, by adjusting the slide displacement amount δ1, the heater insertion cavity 23 can be formed as a recess having a desired depth. For example, the separation dimension (hereinafter referred to as “initial needle separation dimension”) δ2 between the tip surface 2a of the tobacco rod 2 and the needle tip position PN when the cam follower 250 changes in the retracted state localization section R1 is 5 mm, and the needle member 240. By setting the slide stroke (that is, the needle slide stroke) δ3 of (drilled needle portion 242) to 25 mm, it is possible to form the heater insertion cavity portion 23 having a depth of 20 mm in the tobacco rod 2. However, the set values of the initial needle separation dimension δ2 and the needle slide stroke δ3 are exemplary, and of course, they can be changed as appropriate.

Further, in the present embodiment, the cam follower 250 of the perforation slider 220 that orbits with the rotation of the rotary drum portion 62 is provided on the perforation slider 220 while displaces at least a part of the insertion section R2. The roller portion 243 (contacted portion) of the needle member 240 is slid along the guide surface 171 of the roller guide 170 (guide member), so that the needle member 240 is rotationally driven. In the example shown in FIG. 10, in the "first needle rotation period T1", which is a period in which the rotation angle of the rotary drum portion 62 corresponds to 25 ° to 65 °, the roller portion 243 of the needle member 240 provided on the drilling slider 220 However, the needle member 240 can be rotated by the frictional force between the roller portion 243 and the guide surface 171 at the time of sliding along the guide surface 171 of the first roller guide portion 170A. As in the present embodiment, the perforation needle portion 242 is inserted into the tip surface 2a of the tobacco rod 2 (tobacco filler 21) and perforated while rotating the perforation needle portion 242, whereby the perforation needle portion 242 is inserted into the tobacco rod 2 It is possible to reduce the insertion resistance (perforation resistance) when inserting into (tobacco filler 21). As a result, the perforated needle portion 242 can be smoothly inserted into the tobacco rod 2 (tobacco filler 21). As a result, when the heater insertion cavity 23 is drilled in the tobacco rod 2, the posture of the heated tobacco 1 (tobacco rod 2) adsorbed and held in the holding groove 63 is displaced, or the heated tobacco 1 is displaced from the holding groove 63. It is possible to prevent the (tobacco rod 2) from falling off. Further, when the perforation needle portion 242 is inserted into the tobacco rod 2, it is possible to prevent the tobacco rod 2 from being deformed such as buckling.

Next, when the cam follower 250 guided by the guide rail 821 shifts from the insertion section R2 to the insertion state localization section R3, the position of the cam follower 250 on the slide axis is maintained at the position of the slide rod 210. On the other hand, the perforation slider 220 is maintained in place. As a result, the needle tip position PN on the slide axis is maintained in localization while the cam follower 250 is guided by the insertion state localization section R3. As described above, the insertion state localization section R3 in the guide rail 821 is maintained in a state in which the perforation needle portion 242 is inserted into the tobacco rod 2 by maintaining the perforation slider 220 in the position with respect to the slide rod 210. It is formed as a section that guides the cam follower 250 as described above. Thereby, in the insertion state localization section R3, the perforation needle portion 242 can be maintained in the state of being inserted into the tobacco rod 2.

Further, in the present embodiment, while the cam follower 250 of the drilling slider 220 displaces at least a part of the insertion state localization section R3, the roller portion 243 of the needle member 240 provided on the drilling slider 220 ( The contacted portion) slides along the guide surface 171 of the roller guide 170 (guide member), whereby the needle member 240 is rotationally driven. In the example shown in FIG. 10, in the "second needle rotation period T2", which is a period in which the rotation angle of the rotary drum portion 62 corresponds to 70 ° to 110 °, the roller portion 243 of the needle member 240 provided on the drilling slider 220 Is slid along the guide surface 171 of the second roller guide portion 170B, and the needle member 240 is rotated by the frictional force between the roller portion 243 and the guide surface 171 during the sliding. In this way, with the drilling needle portion 242 inserted into the tobacco rod 2, the drilling needle portion 242 is rotationally driven to drill the heater insertion cavity portion 23 into an appropriate size and shape. it can. That is, while the cam follower 250 of the perforation slider 220 is located in the insertion state localization section R3 on the guide rail 821, the perforation needle portion 242 is rotationally driven to match the perforation needle portion 242 inserted in the tobacco rod 2. The shape and size of the heater insertion cavity 23 can be neatly formed, and the heater insertion cavity 23 can be prevented from being formed into strain.

Next, when the cam follower 250 guided by the guide rail 821 shifts from the insertion state localization section R3 to the pull-out section R4, the cam follower 250 moves along the drum rotation axis CL2 (slide axis) as the rotation angle increases. Displace backwards. Therefore, while the cam follower 250 is guided by the withdrawal section R4, the needle tip position PN of the perforation needle portion 242 is rearward along the drum rotation axis CL2 (slide axis), that is, the perforation needle portion 242 is a cigarette. It is displaced in the direction of being pulled out from the inside of the rod 2. As described above, the pull-out section R4 in the guide rail 821 is formed as a section that guides the cam follower 250 so that the perforation needle portion 242 is pulled out from the tobacco rod 2. As a result, the perforation needle portion 242 can be suitably pulled out from the tobacco rod 2 in the process in which the cam follower 250 is guided by the pull-out section R4.

Further, in the present embodiment, the roller portion 243 (contacted) of the needle member 240 provided on the drilling slider 220 is provided while the cam follower 250 of the drilling slider 220 displaces at least a part of the drawing section R4. The needle member 240 is rotationally driven by the sliding portion) along the guide surface 171 of the roller guide 170 (guide member). In the example shown in FIG. 10, in the "third needle rotation period T3", which is a period in which the rotation angle of the rotary drum portion 62 corresponds to 115 ° to 155 °, the roller portion 243 of the needle member 240 provided on the drilling slider 220 Is slid along the guide surface 171 of the third roller guide portion 170C, and the needle member 240 is rotated by the frictional force between the roller portion 243 and the guide surface 171 at the time of sliding. In this way, by pulling out the drilling needle portion 242 from the tobacco rod 2 (tobacco filler 21) while rotating the drilling needle portion 242, the pulling resistance of the drilling needle portion 242 can be reduced. As a result, the perforated needle portion 242 can be smoothly pulled out from the tobacco rod 2 (tobacco filler 21). As a result, it is possible to prevent the tobacco filler 21 from adhering to the perforated needle portion 242 when the perforated needle portion 242 is pulled out from the tobacco rod 2. As a result, it is possible to prevent the shape of the heater insertion cavity 23 from being deformed or becoming distorted. Further, when the perforated needle portion 242 is pulled out from the tobacco rod 2, it is possible to preferably prevent the heat-not-burn tobacco 1 (tobacco rod 2) from falling out from the holding groove 63.

Then, after the cam follower 250 guided by the guide rail 821 shifts from the withdrawal section R4 to the retracted state localization section R1, the needle tip position PN of the drilling needle portion 242 is separated from the tip surface 2a of the tobacco rod 2. Is maintained at. Specifically, the needle tip position PN of the drilling needle portion 242 is maintained in a state of being separated from the tip surface 2a of the tobacco rod 2 by the initial needle separation dimension δ2. Then, when the rotation angle of the rotary drum portion 62 reaches the transfer end position, the heat-not-burn tobacco 1 having the heater insertion cavity portion 23 formed in the tobacco rod 2 is delivered from the perforated drum 60 to the subsequent drum 59. Is done.

In the example shown in FIGS. 10 and 11, in the present embodiment, the inclined guide portion 821B (insertion section R2 and extraction section R4) of the guide rail 821 is a constant-speed slide having a constant inclination angle with respect to the virtual orthogonal plane VP. It is formed as an area. Here, the constant inclination angle with respect to the virtual orthogonal plane VP means that the amount of change in the coordinates (z coordinate) of the first coordinate axis (Z axis) per unit rotation angle of the rotating drum portion 62 is constant. To do. By forming the insertion section R2 in the guide rail 821 as a constant speed slide region, when the cam follower 250 is guided along the insertion section R2, the drilling needle portion 242 is along the drum rotation axis CL2 (slide axis). And slide forward at a constant speed. As a result, the perforation needle portion 242 is inserted into the tobacco rod 2 at a constant speed. Similarly, since the pull-out section R4 in the guide rail 821 is formed as a constant speed slide region, when the cam follower 250 is guided along the pull-out section R4, the drilling needle portion 242 becomes the drum rotation shaft CL2 (slide shaft). ) And slide backward at a constant speed. As a result, the perforated needle portion 242 is pulled out from the tobacco rod 2 at a constant speed. Here, when the insertion section R2 and the pull-out section R4 of the guide rail 821 are formed as the constant speed slide region as described above, the inclination angle of the insertion section R2 with respect to the virtual orthogonal plane VP (hereinafter referred to as “insertion section inclination angle”). The inclination angle of the drawing section R4 with respect to the virtual orthogonal plane VP (hereinafter, referred to as “pulling section inclination angle”) may be the same or different. When the inclination angle of the insertion section and the inclination angle of the extraction section of the guide rail 821 are equal, the insertion speed when the perforation needle portion 242 is inserted into the tobacco rod 2 and the perforation needle portion 242 are pulled out from the tobacco rod 2. The pull-out speeds are equal. On the other hand, when the insertion section inclination angle and the extraction section inclination angle of the guide rail 821 are different, the insertion speed and the extraction speed of the perforation needle portion 242 with respect to the tobacco rod 2 can be set to different speeds.

Further, in the present embodiment, the inclined guide portion 821B (insertion section R2 and extraction section R4) of the guide rail 821 may be formed as a shifting slide region in which the inclination angle with respect to the virtual orthogonal plane VP is not constant (changes). .. Here, the fact that the inclination angle with respect to the virtual orthogonal plane VP is not constant (changes) means that the amount of change in the coordinates (z coordinate) of the first coordinate axis (Z axis) per unit rotation angle of the rotating drum portion 62 is not constant. , Means to change. For example, the insertion section R2 in the guide rail 821 is formed as a speed change slide region, so that when the cam follower 250 is guided along the insertion section R2, the drilling needle portion 242 becomes the drum rotation axis CL2 (slide axis). When sliding forward along the line, it slides while changing its sliding speed. As a result, the perforation needle portion 242 is inserted into the tobacco rod 2 while changing its insertion speed. Similarly, since the pull-out section R4 in the guide rail 821 is formed as a shift slide region, when the cam follower 250 is guided along the pull-out section R4, the drilling needle portion 242 becomes the drum rotation shaft CL2 (slide shaft). When sliding backward along the line, slide while changing the slide speed. As a result, the perforated needle portion 242 is pulled out from the tobacco rod 2 while changing its pulling speed. In the present embodiment, the inclined guide portion 821B of the guide rail 821 may include at least one of the above-mentioned "constant speed slide region" and "shift slide region". That is, all of the inclined guide portions 821B on the guide rail 821 may be either the "constant speed slide region" or the "shift slide region". Further, the inclined guide portion 821B in the guide rail 821 may include both a “constant speed slide region” and a “shift slide region”. In that case, the ratio of the "constant speed slide area" and the "shift slide area" can be freely set.

Here, it is preferable that the pull-out section tilt angle (tilt angle of the pull-out section with respect to the virtual orthogonal plane VP) of the guide rail 821 is smaller than the insertion section tilt angle (tilt angle of the insertion section with respect to the virtual orthogonal plane VP). By doing so, the pull-out speed of the drilling needle portion 242 with respect to the tobacco rod 2 can be made smaller than the insertion speed. Here, the pull-out resistance when the drilling needle portion 242 is pulled out from the tobacco rod 2 tends to be relatively larger than the insertion resistance when the drilling needle portion 242 is inserted into the tobacco rod 2. Therefore, by making the pulling speed of the drilling needle portion 242 with respect to the tobacco rod 2 relatively smaller than the insertion speed, the drilling needle portion 242 can be slowly pulled out from the tobacco rod 2. As a result, when the perforated needle portion 242 is pulled out from the tobacco rod 2, the heated tobacco 1 (tobacco rod 2) can be prevented from falling out from the holding groove 63, and the tobacco filler 21 adheres to the perforated needle portion 242. It is possible to prevent the shape of the heater insertion cavity 23 from becoming distorted.

Further, it is preferable that the cam portion 82 (guide rail 821) in the present embodiment is longer in the pull-out section R4 than in the insertion section R2. By doing so, it is possible to extend the time required for pulling out the perforated needle portion 242 from the tobacco rod 2 to be longer than the time required for inserting the perforated needle portion 242 into the tobacco rod 2. By doing so, the perforation needle portion 242 can be slowly pulled out from the tobacco rod 2. As a result, when the perforated needle portion 242 is pulled out from the tobacco rod 2, the heated tobacco 1 (tobacco rod 2) falls off from the holding groove 63, the tobacco filler 21 adheres to the perforated needle portion 242, or , It is possible to suitably suppress the shape of the heater insertion cavity 23 from becoming distorted.

Here, FIG. 12 shows the first direction vector V1 of the first virtual perpendicular line VL1 extending from the start position (hereinafter, referred to as “the start end of the insertion section”) P1 of the insertion section R2 on the guide rail 821 toward the drum rotation axis CL2. The first central angle (hereinafter, "insertion section") formed by the second direction vector V2 of the second virtual perpendicular line VL2 extending from the end position (hereinafter, "insertion section end") P2 of the insertion section R2 toward the drum rotation axis CL2. Φ1 (referred to as the central angle), the third direction vector V3 of the third virtual perpendicular line VL3 extending from the start position (hereinafter referred to as the “starting end of the drawing section”) P3 of the drawing section R4 toward the drum rotation axis CL2, and the drawing section R4. The second central angle (hereinafter, "pull-out section center angle") formed by the fourth direction vector V4 of the fourth virtual perpendicular line VL4 extending from P4 at the end position (hereinafter, "pull-out section end") P4 toward the drum rotation axis CL2. It is a figure explaining φ2. The points of the insertion section start end P1, the insertion section end P2, the pull-out section start end P3, and the pull-out section end P4 are also shown in FIG. Here, as in the example described with reference to FIG. 10, a section corresponding to the rotation angle of the rotating drum portion 62 of 15 ° to 65 ° is set in the insertion section R2, and the rotation angle of the rotating drum portion 62 is 115 ° to 165 °. When the section corresponding to ° is set to the extraction section R4, both the insertion section center angle φ1 and the extraction section center angle φ2 are set to 50 °. Further, in the present embodiment, the insertion section center angle φ1 and the extraction section center angle φ2 may be set to different sizes. At that time, it is preferable to set the extraction section center angle φ2 to be relatively larger than the insertion section center angle φ1. As a result, the perforation needle portion 242 can be slowly pulled out from the tobacco rod 2. As a result, when the perforated needle portion 242 is pulled out from the tobacco rod 2, it is possible to prevent the heat-not-burn tobacco 1 (tobacco rod 2) from falling out from the holding groove 63, and the tobacco filler 21 adheres to the perforated needle portion 242. It is possible to prevent the shape of the heater insertion cavity 23 from becoming distorted. In this embodiment, an embodiment in which the insertion section central angle (first central angle) φ1 is set to 10 ° or more and 120 ° or less can be exemplified. Further, an embodiment in which the pull-out section central angle (second central angle) φ2 is set to 10 ° or more and 180 ° or less can be exemplified.

As described above, according to the present embodiment, it is possible to provide the perforation drum device 70 suitable for perforating the heater insertion cavity portion 23 that opens in the tip surface 2a of the tobacco rod 2.

Further, in the roller guide 170 of the perforation drum device 70 in the present embodiment, the roller guide 170 is divided into a plurality of the first roller guide portions 170A to the third roller guide portions 170C (plural division guide portions). It is divided so that the roller guide portions 170A to 170C are arranged apart from each other. According to this, when the frictional force fluctuates due to the roller portion 243 of the needle member 240 being worn due to friction with the guide surface 171, the position of the guide surface 171 and the like can be easily finely adjusted. Further, the rotational torque of the needle member 240 can be easily finely adjusted according to the filling amount of the tobacco filler 21 in the tobacco rod 2.

Further, the drilling drum device 70 in the present embodiment can adopt various modified examples. For example, various modifications can be adopted for the stroke operation of the needle member 240 in the process of transporting the heat-not-burn tobacco 1 by the drilling drum 60. For example, even if the stroke operation of the needle member 240 is changed by changing the length and ratio of each section of the retracted state localization section R1, the insertion section R2, the insertion state localization section R3, and the pull-out section R4 on the guide rail 821. good. For example, in the guide rail 821, the insertion state localization section R3 may not be formed between the insertion section R2 and the pull-out section R4. By forming the guide rail 821 in this way, the perforated needle portion 242 of the needle member 240 is inserted into the tobacco rod 2 to perforate the heater insertion cavity portion 23, and then the perforated needle portion is immediately formed from the tobacco rod 2. 242 may be pulled out.

Further, as an example, the diameter of the tobacco rod 2 is about 7 mm to 8 mm. Therefore, in the perforation drum device 70, it is preferable that the diameter of the perforation needle portion 242 in the needle member 240 is 3.5 mm or less. By doing so, it is possible to form the heater insertion cavity 23 having an appropriate diameter for the tobacco rod 2.

Further, in the heat-not-burn tobacco 1 shown in FIG. 1, the heater insertion cavity 23 is formed as a non-penetrating recess that opens to the tip surface 2a of the tobacco rod 2, but the heater insertion cavity 23 is the tobacco rod 2. May be formed as a through hole penetrating in the axial direction.

Here, FIG. 13 is a diagram illustrating the relationship between the needle shaft AN of the drilling needle portion 242 and the holding groove 63 (holding portion) in the drilling drum device 70. Reference numeral Pcb in FIG. 13 indicates the center of the groove bottom (hereinafter, referred to as “groove bottom center”) in the holding groove 63 (holding portion). In FIG. 13, the groove bottom center PCB is located at the deepest part of the holding groove 63 having a semicircular cross-sectional shape. Further, reference numeral VL5 is a virtual perpendicular line extending from the groove bottom center PCB in the holding groove 63 (holding portion) toward the drum rotation axis CL2. The symbol Pcc is an intersection of the virtual perpendicular line VL5 and the drum rotation axis CL2. That is, the intersection Pcc is located on the drum rotation axis CL2. Reference numeral VL6 is a straight line passing through the intersection Pcc and the groove bottom center Pcc. In the present embodiment, the needle shaft AN of the drilling needle portion 242 passes through a point located on the straight line VL6 and outside the groove bottom center PCB, and extends parallel to the drum rotation shaft CL2. It is preferable to set to. At that time, it is more preferable that the distance between the groove bottom center PCB in the holding groove 63 and the needle shaft AN of the drilling needle portion 242 is set to a size equal to or smaller than the diameter of the tobacco rod 2 held in the holding groove 63. In the present embodiment, the distance between the groove bottom center PCB in the holding groove 63 and the needle shaft AN of the drilling needle portion 242 is set to be equal to, for example, the radius of the tobacco rod 2 held in the holding groove 63. As a result, the needle shaft AN of the perforated needle portion 242 is set to be coaxial with the central shaft CL1 of the tobacco rod 2 held in the holding groove 63. By setting the position of the needle shaft AN in this way, the heater insertion cavity portion 23 of the tobacco rod 2 can be formed coaxially with the central shaft CL1 of the tobacco rod 2.

Here, FIG. 14 is a diagram illustrating a modification of the first embodiment. FIG. 14 is a diagram corresponding to FIG. 7, and shows a detailed configuration of the drilling unit 200. The rotating drum portion 62 in this modification has a second stop ring 187. The second stop ring 187 is an annular ring member attached to the outer peripheral surface 62A of the rotary drum portion 62, and is arranged so as to face the stop ring 186. The second stop ring 187 is attached to the rear of the holding groove 63. The second stop ring 187 is a second stop ring 187 that suppresses the heat-not-burn tobacco 1 from falling out of the holding groove 63 by contacting the tip surface 2a of the tobacco rod 2 when the perforation needle portion 242 is pulled out from the tobacco rod 2. It is a stopper member.

FIG. 15 is a partially enlarged view of the second stop ring 187 in the modified example of the first embodiment. FIG. 15 shows a second stop ring 187 when viewed in parallel with the drum rotation axis CL2. As shown in FIG. 15, the second stop ring 187 has a notch 187A formed at a position corresponding to each holding groove 63. Each notch 187A in the second stop ring 187 overlaps with the drilling needle portion 242 in the direction of the arrow of the drum rotation axis CL2, and when the drilling needle portion 242 slides along the needle axis AN, the drilling is performed. The needle portion 242 does not interfere (collide) with the second stop ring 187. In FIG. 15, the outline of the tobacco rod 2 is shown by the broken line, and the outline of the perforation needle portion 242 is shown by the chain line. As shown in FIG. 15, the notch 187A of the second stop ring 187 is smaller than the contour of the tobacco rod 2. As a result, when the perforated needle portion 242 is pulled out from the tobacco rod 2, even if the tobacco rod 2 is displaced rearward due to the pulling resistance, the second stop ring 187 (more specifically, the edge portion of the notch 187A) Etc.), the tobacco rod 2 can be prevented from falling out of the holding groove 63 by contacting the tip surface 2a. In the example shown in FIG. 14, the tip surface 2a of the tobacco rod 2 and the second stop ring 187 are separated from each other in the drum rotation axis CL2 direction while the tobacco rod 2 is held in the holding groove 63. The second stop ring 187 may be arranged at a position where the tip surface 2a and the second stop ring 187 come into contact with each other when the tobacco rod 2 is held in the holding groove 63.

The present invention may be provided as a drilling device provided with a plurality of drilling drum devices 70 according to the above-described embodiment. In such a perforation device, each perforation drum device 70 may be incorporated in the filter tip attachment device 50. FIG. 16 is a diagram illustrating a drilling device including a plurality of drilling drum devices 70 incorporated in the filter tip attachment device 50. In the example shown in FIG. 16, the drilling device includes two drilling drum devices 70. The individual perforation drum device 70 is as described in the above embodiment. Reference numeral 70A is a perforation drum device located relatively in the front stage of the filter chip attachment device 50, and is hereinafter referred to as a “pre-stage perforation drum device”. Reference numeral 70B is a perforation drum device located after the pre-stage perforation drum device 70A, and is hereinafter referred to as a “post-stage perforation drum device”. Here, among the plurality of perforation drum devices 70, the needle diameter of the perforation needle portion 242 provided in the post-stage perforation drum device 70B located relatively in the rear stage is set to the pre-stage perforation drum device 70A relatively located in the front stage. It may have a size larger than the needle diameter of the provided perforated needle portion 242. In this way, a plurality of perforated drum devices 70 are arranged, and a heater insertion cavity is used by using a perforated needle portion 242 having a stepwise larger diameter with respect to the tobacco rod 2 of the heat-not-burn tobacco 1 to which the drum rows are sequentially conveyed. By drilling the portion 23, the diameter of the heater insertion cavity portion 23 can be gradually increased. That is, the heater insertion cavity portion 23 formed in the tobacco rod 2 by the front-stage drilling drum device 70A is used as a pilot hole, and further drilling is performed by the drilling needle portion 242 of the rear-stage drilling drum device 70B to have a desired diameter and shape. It is possible to form the well-equipped cavity 23 for inserting the heater with even higher accuracy.

Further, among the plurality of perforation drum devices 70, the needle insertion depth dimension of the perforation needle portion 242 provided in the post-stage perforation drum device 70B located relatively in the rear stage is the pre-stage perforation drum relatively located in the front stage. The dimension may be set to be larger than the needle insertion depth dimension of the drilling needle portion 242 provided in the device 70A. In this case, the heater insertion cavity portion 23 formed in the tobacco rod 2 by the front-stage drilling drum device 70A can be used as a pilot hole, and the drilling needle portion 242 of the rear-stage drilling drum device 70B can drill deeper. In the example shown in FIG. 16, an example in which two drilling drum devices 70 are arranged in series has been described, but the drilling device may include three or more drilling drum devices 70. Then, the perforation drum device 70 located on the most upstream side is hung on the perforation drum device 70 located on the most downstream side to gradually increase the needle diameter of the perforation needle portion 242 and gradually increase the needle insertion depth dimension. By making it deeper, the diameter of the heater insertion cavity 23 in the tobacco rod 2 may be gradually increased, or the diameter may be gradually increased.

In the example shown in FIG. 16, although the drum 59 is interposed between the perforated drums 60 in each perforated drum device 70, the perforated drums 60 in each perforated drum device 70 may be continuously arranged. Further, a plurality of drums 59 may be interposed between the perforated drums 60 in each perforated drum device 70.

Although the embodiments and modifications according to the present invention have been described above, the perforation drum device and the perforation device according to the present invention are not limited to these, and these can be combined as much as possible.

1 ... Heat-not-burn tobacco 2 ... Tobacco rod 3 ... Filter 21 ... Tobacco filler 23 ... Heater insertion cavity 50 ... Filter tip attachment 60 ... Perforated drum 62 ... -Rotating drum part 63 ... Holding groove 70 ... Drilling drum device 80 ... Fixed housing 82 ... Cam part 200 ... Drilling unit 210 ... Slide rod 220 ... Drilling slider 230 ...・ Slider body 240 ・・・ Needle member 242 ・・・ Drilling needle part

Claims

A perforation drum device for perforating a cavity in a heat-not-burn tobacco rod.
A rotating drum portion having a holding portion on the outer peripheral surface for holding the heat-not-burn tobacco so that the axial direction of the tobacco rod is along the drum rotating axis.
A perforation unit provided in the rotary drum portion and punching the tip of a tobacco rod in the heat-not-burn tobacco held in the holding portion in the process of transporting the heated tobacco.
A cam portion provided at the base of the rotary drum attached to the rotary drum portion, and a cam portion.
With
The perforation unit is
A slide rod that orbits in synchronization with the rotating drum portion and extends in parallel with the drum rotating shaft.
A perforation slider having a perforation needle portion arranged on the outer peripheral side of the rotary drum portion and being held by the slide rod so as to be reciprocally slidable along the axial direction of the slide rod.
The perforation slider is provided in the perforation slider and is engaged with the cam portion, and is guided by the cam portion when rotating around the rotating drum portion so that the perforation slider is moved in the axial direction of the slide rod. With a cam follower that slides back and forth along
Have,
The cam portion guides the cam follower so that at least the perforation needle portion is inserted into the tobacco rod from the tip and the cam follower is guided, and the perforation needle portion is pulled out from the tobacco rod. Including withdrawal section,
Perforated drum device.
The cam portion extends in an arc shape about the drum rotation axis and has a guide rail capable of receiving the cam follower.
The perforated drum device according to claim 1.
The perforated drum device according to claim 2, wherein the guide rail is arranged in an annular shape around the drum rotation axis.
The guide rail has a three-dimensional curved shape having an equidistant dimension from the drum rotation axis, and has an inclined guide portion in which at least a part thereof is inclined with respect to a virtual orthogonal plane orthogonal to the drum rotation axis. The insertion section and the pull-out section are formed by the inclined guide portion.
The perforated drum device according to claim 2 or 3.
The tilt guide portion includes at least one of a constant speed slide region in which the tilt angle with respect to the virtual orthogonal plane is constant and a speed change slide region in which the tilt angle with respect to the virtual orthogonal plane is not constant.
The perforated drum device according to claim 4.
The inclination angle of the drawn section with respect to the virtual orthogonal plane is smaller than the inclination angle of the insertion section with respect to the virtual orthogonal plane.
The perforated drum device according to claim 4 or 5.
The rotating drum base has a cylindrical housing coaxial with the drum rotating shaft, and the guide rail is provided along the outer peripheral surface of the cylindrical housing.
The perforated drum device according to any one of claims 2 to 6.
The cam portion is longer in the pull-out section than in the insert section.
The perforated drum device according to any one of claims 1 to 7.
The cam portion is arranged in an annular shape about the drum rotation axis, and is arranged from the direction vector of the first virtual perpendicular line extending from the start position of the insertion section toward the drum rotation axis and the end position of the insertion section. Compared with the first central angle φ1 formed by the direction vector of the second virtual perpendicular line extending toward the drum rotation axis, the direction vector of the third virtual perpendicular line extending from the start position of the drawing section toward the drum rotation axis The second central angle φ2 formed by the direction vector of the fourth virtual perpendicular line extending from the end position of the drawn section toward the drum rotation axis is large.
The perforated drum device according to any one of claims 1 to 8.
The cam portion is arranged in an annular shape about the drum rotation axis, and is arranged from the direction vector of the first virtual perpendicular line extending from the start position of the insertion section toward the drum rotation axis and the end position of the insertion section. The first central angle φ1 formed by the direction vector of the second virtual perpendicular line extending toward the drum rotation axis is 10 ° or more and 120 ° or less.
The perforated drum device according to any one of claims 1 to 9.
The cam portion is arranged in an annular shape about the drum rotation axis, and is arranged from the direction vector of the third virtual perpendicular line extending from the start position of the pull-out section toward the drum rotation axis and the end position of the pull-out section. The second central angle φ2 formed by the direction vector of the fourth virtual perpendicular line extending toward the drum rotation axis is 10 ° or more and 180 ° or less.
The perforated drum device according to any one of claims 1 to 10.
The cam portion is maintained in a state in which the perforation needle portion is inserted into the tobacco rod by maintaining the perforation slider in a position with respect to the slide rod between the insertion section and the withdrawal section. Including the insertion state localization section that guides the cam follower so as to
The perforated drum device according to any one of claims 1 to 11.
The diameter of the perforated needle portion is 3.5 mm or less.
The perforated drum device according to any one of claims 1 to 12.
The perforation slider has a slider body slidably attached to the slide rod, and a needle shaft portion that is rotatably held by the slider body and has the perforation needle portion attached to the tip side.
The needle shaft portion and the perforated needle portion are arranged coaxially and are rotatable around a rotation shaft parallel to the drum rotation shaft.
The rotary drum base is formed on the needle shaft portion while the cam follower of the drilling slider that orbits with the rotation of the rotary drum portion displaces at least a part of the insertion section. It has a guide member extending in an arc shape around the drum rotation shaft for rotating the needle shaft portion by sliding a predetermined contacted portion.
The perforated drum device according to any one of claims 1 to 13.
The guide member is brought into contact with the contacted portion while the cam follower of the drilling slider, which orbits as the rotating drum portion rotates, displaces at least a part of the drawn section. Is formed,
The perforated drum device according to claim 14.
The contacted portion is an annular roller portion provided coaxially and integrally with the needle shaft portion, and the needle shaft portion rotates due to friction when the roller portion slides on the guide member. ,
The perforated drum device according to claim 14 or 15.
The guide member has a plurality of divided guide portions obtained by dividing the guide member into a plurality of divided guide members, and the plurality of divided guide portions are separated from each other.
The perforated drum device according to any one of claims 14 to 16.
The holding portion is a holding groove having a concave shape capable of holding heated tobacco.
The needle shaft of the perforated needle portion is on a straight line passing through the center of the groove bottom at the intersection of the virtual vertical line extending from the center of the groove bottom in the holding groove toward the drum rotation shaft and the drum rotation shaft. It passes through a point located outside the center of the groove bottom and extends parallel to the drum rotation axis.
The perforated drum device according to any one of claims 1 to 17.
The distance between the center of the groove bottom in the holding groove and the needle shaft in the perforated needle portion is set to a size equal to or less than the diameter of the tobacco rod in the heat-not-burn tobacco held in the holding groove.
The perforated drum device according to claim 18.
The rotary drum portion is a first type that suppresses the heat-not-burn tobacco from falling out from the holding portion by contacting the mouthpiece end of the heat-not-burn tobacco when the perforation needle portion is inserted into the tip of the tobacco rod. Has a stopper member,
The perforated drum device according to any one of claims 1 to 19.
The rotary drum portion has a second stopper member that suppresses the heat-not-burn tobacco from falling off from the holding portion by contacting the tip of the tobacco rod when the perforated needle portion is pulled out from the tobacco rod.
The perforated drum device according to any one of claims 1 to 20.
A perforation device including a plurality of perforation drum devices according to any one of claims 1 to 21, wherein the perforation drum device provided in a relatively rear-stage perforation drum device among the plurality of perforation drum devices. The needle diameter of the needle portion is larger than the needle diameter of the drilling needle portion provided in the drilling drum device located relatively in the front stage.
Drilling device.
A perforation device including a plurality of perforation drum devices according to any one of claims 1 to 21, wherein the perforation drum device provided in a relatively rear-stage perforation drum device among the plurality of perforation drum devices. The needle insertion depth dimension of the needle portion is larger than the needle insertion depth dimension of the perforation needle portion provided in the perforation drum device located relatively in the front stage.
Drilling device.