JP2009183248A - Shredded tobacco layer compression molding apparatus of cigarette-making machine - Google Patents

Shredded tobacco layer compression molding apparatus of cigarette-making machine Download PDF

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JP2009183248A
JP2009183248A JP2008028869A JP2008028869A JP2009183248A JP 2009183248 A JP2009183248 A JP 2009183248A JP 2008028869 A JP2008028869 A JP 2008028869A JP 2008028869 A JP2008028869 A JP 2008028869A JP 2009183248 A JP2009183248 A JP 2009183248A
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cigarette
compression molding
layer
tobacco
molding apparatus
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Gen Sakuma
弦 佐久間
So Togawa
創 戸川
Fumio Sashide
文夫 指出
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Japan Tobacco Inc
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Japan Tobacco Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a shredded tobacco layer compression molding apparatus of a cigarette-making machine, capable of reducing crushing of shredded tobacco. <P>SOLUTION: The shredded tobacco layer compression molding apparatus of a cigarette-producing machine is equipped with tongs 12, and the tongs 12 have a narrowing-down face 24 forming a part of a compression molding passage 26 for shredded tobacco layer on the lower face, and the narrowing-down face 24 is formed in an arc-like shape forming a recessed state in the axial direction of the compression molding passage 26. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、刻たばこ層が巻紙とともに一方向に走行する過程にて、刻たばこが巻紙により包み込まれる前に、刻たばこ層を棒状に圧縮成形するシガレット製造機の刻たばこ層圧縮成形装置に関する。   The present invention relates to a cigarette layer compression molding apparatus of a cigarette manufacturing machine that compresses a cigarette layer into a rod shape before the cigarette is wrapped by the wrapping paper in a process in which the cigarette layer travels in one direction together with the wrapping paper.

この種の刻たばこ層圧縮成形装置は、刻たばこ層が巻紙により包み込まれたたばこロッドを成形するにあたり、このたばこロッドの安定した成形を確保するうえで、シガレット製造機にとって重要なものである。
しかしながら、刻たばこ層圧縮成形装置は、その圧縮成形通路内を刻たばこ層が巻紙とともに通過する際、その走行方向でみて直交する方向、具体的にはその垂直方向に刻たばこ層を圧縮して棒状に成形することから、刻たばこ層内の個々の刻たばこが受ける垂直方向の応力も大となり、刻たばこの破砕を招く。 This type of cigarette layer compression molding apparatus is important for a cigarette manufacturing machine in order to ensure stable molding of a cigarette rod when the cigarette rod in which the cigarette layer is wrapped with a wrapping paper is formed.
However, the cigarette layer compression molding apparatus compresses the cigarette layer in the direction perpendicular to the running direction, specifically in the vertical direction when the cigarette layer passes with the wrapping paper in the compression molding passage. Since it is formed into a rod shape, the vertical stress received by each cigarette in the cigarette layer also becomes large, which leads to crushing of the cigarette.

このような刻たばこの破砕を低減するために、圧縮成形通路を形成するためのトングには、刻たばこ層を圧縮して絞り込む内面形状、即ち、その絞り込み面の形状に種々の工夫が採用されている。例えば、刻たばこ層圧縮成形装置の中には、横断面でみて、その絞り込み面の曲率半径が圧縮成形通路の入口から出口に亘り連続して減少するようなトングを備えたものが知られている（特許文献１）。
特許第3394986号明細書 In order to reduce the crushing of such cigarettes, various ingenuities have been adopted for the tongs for forming the compression-molded passage in the shape of the inner surface that compresses and narrows the tobacco layer, that is, the shape of the narrowed surface. ing. For example, some cigarette layer compression molding devices are known to have a tongue that reduces the radius of curvature of the squeezed surface continuously from the inlet to the outlet of the compression molding passage when viewed in cross section. (Patent Document 1).
Patent No. 3394986 Specification

上述した特許文献１のトングは圧縮成形通路の入口から出口に亘って滑らかな絞り面を有していることから、刻たばこ層が圧縮成形通路を通過する際、圧縮成形通路に対する刻たばこ層の通過抵抗が減少し、刻たばこの破砕を低減できるものと考えられる。
しかしながら、刻たばこ層には、たばこの葉を裁刻して得た通常の刻たばこのみならず、この通常の刻たばこに膨化処理や緩和処理を更に加えて得た処理刻たばこも含まれているが、このような処理刻たばこは通常の刻たばこに比べて脆い。このため、特許文献１のトングを使用したとしても、刻たばこ層が圧縮成形通路を通過する際、処理刻たばこは通常の刻たばこよりも破砕を受け易く、圧縮成形通路を通過した後、刻たばこ層内の刻たばこの平均粒度が不所望に小さくなってしまう。 Since the tongue of the above-mentioned Patent Document 1 has a smooth throttle surface from the inlet to the outlet of the compression molding passage, when the tobacco layer passes through the compression molding passage, It is considered that the passage resistance is reduced, and the crushing of tobacco can be reduced.
However, the tobacco layer includes not only ordinary tobacco obtained by cutting tobacco leaves but also processed tobacco obtained by further adding expansion treatment and relaxation treatment to this ordinary tobacco. However, such processed tobacco is more fragile than normal tobacco. For this reason, even if the tongs of Patent Document 1 are used, when the tobacco layer passes through the compression molding passage, the processed tobacco is more susceptible to crushing than normal tobacco, and after passing through the compression molding passage, The average particle size of the tobacco in the tobacco layer is undesirably reduced.

本発明は上述の事情に基づいてなされたもので、その目的とするところは、刻たばこ層に上述の処理刻たばこが含まれているとしても、圧縮成形後の刻たばこ層、即ち、たばこロッド内の刻たばこの平均粒度を増加させることができるシガレット製造機の刻たばこ層圧縮成形装置を提供することにある。   The present invention has been made on the basis of the above-mentioned circumstances. The purpose of the present invention is to provide a tobacco layer after compression molding, i.e., a tobacco rod, even if the above-mentioned treated tobacco is included in the tobacco layer. It is an object of the present invention to provide a cigarette making machine cigarette layer compression molding apparatus capable of increasing the average particle size of cigarettes inside.

上記の目的を達成するため、本発明のシガレット製造機の刻たばこ層圧縮成形装置は、刻たばこ層の圧縮成形通路を形成するためのトングであって、圧縮成形通路の一部を形成すべく圧縮成形通路の入口から出口に亘って延び、巻紙に向けて刻たばこ層を圧縮する絞り込み面を有する、トングを備え、このトングの絞り込み面は、圧縮成形通路の軸線に沿って凹状をなす円弧形状に形成されている（請求項１）。   In order to achieve the above object, a cigarette layer compression molding apparatus of a cigarette making machine according to the present invention is a tong for forming a compression molding passage of a cigarette layer, and forms a part of the compression molding passage. A tong having a squeezing surface extending from the inlet to the outlet of the compression molding passage and compressing the tobacco layer toward the web, the squeezing surface of the tong being a circular arc that is concave along the axis of the compression molding passage It is formed in a shape (claim 1).

具体的には、入口に位置した絞り込み面の入口縁と出口に位置した絞り込み面の出口縁とを繋ぐべく刻たばこ層の走行方向に延びる仮想円筒面でみて、絞り込み面は、仮想円筒面よりも外側に膨らんでいる（請求項２）。好ましくは、絞り込み面と仮想面との間の膨らみの最大値は約１．６ｍｍ以下に設定されている（請求項３）。
上述の刻たばこ層圧縮成形装置によれば、トングの絞り込み面が圧縮成形通路の軸線に沿って凹状をなす円弧形状に形成されているから、刻たばこ層が圧縮成形通路を通過する際、絞り込み面は圧縮成形通路の入口側となる上流領域では刻たばこ層の圧縮を実質的に行わず、この後、刻たばこ層が圧縮成形通路の出口に向け、上流領域から下流領域に進入するに連れて刻たばこ層を徐々に圧縮し、そして、最終的には、出口により規定される径まで刻たばこ層を棒状に絞り込む。 Specifically, as seen from the virtual cylindrical surface extending in the traveling direction of the tobacco layer to connect the inlet edge of the narrowed surface located at the inlet and the outlet edge of the narrowed surface located at the outlet, the narrowed surface is more than the virtual cylindrical surface. Also bulges outward (Claim 2). Preferably, the maximum value of the bulge between the narrowed surface and the virtual surface is set to about 1.6 mm or less (claim 3).
According to the above-described engraved tobacco layer compression molding apparatus, the squeezing surface of the tongue is formed in a concave arc shape along the axis of the compression molding passage, so that the squeezed tobacco layer is squeezed when passing through the compression molding passage. The surface does not substantially compress the tobacco layer in the upstream region on the inlet side of the compression molding passage, and thereafter, as the tobacco layer moves toward the outlet of the compression molding passage and enters the downstream region from the upstream region. The cigarette layer is gradually compressed, and finally the cigarette layer is narrowed to a rod shape to the diameter defined by the outlet.

ここで、圧縮成形通路の下流領域にて、刻たばこ層が絞り込まれるとしても、圧縮成形通路の上流領域では刻たばこ層の圧縮度が弱いことから、刻たばこ層の絞り込みによる圧縮力は上流領域に逃げ、圧縮成形通路の出口での最終的な絞り込み時、刻たばこ層の刻たばこに加わる垂直応力は大きく軽減される。   Here, even if the tobacco layer is squeezed in the downstream region of the compression molding passage, the compression force of the squeezing tobacco layer is limited in the upstream region because the compression degree of the tobacco layer is weak in the upstream region of the compression molding passage. The vertical stress applied to the tobacco of the tobacco layer is greatly reduced at the time of final narrowing at the outlet of the compression molding passage.

請求項１〜３のシガレット製造機の刻たばこ層圧縮成形装置は、刻たばこ層の絞り込み時、トングの絞り込み面は刻たばこ層の刻たばこに加わる垂直応力を軽減することで、刻たばこの破砕を大きく低減でき、この後のたばこロッドの成形を安定して実施させる。
また、前述した仮想面に対する絞り込み面の膨らみの最大値を１．６ｍｍ以下に制限したので、絞り込み面の加工に要する手間を過度にすることなく、刻たばこの破砕低減効果を十分に発揮可能となる。 The cigarette layer compression molding apparatus of the cigarette manufacturing machine according to claims 1 to 3, wherein when the tobacco layer is narrowed, the tong's narrowing surface reduces the vertical stress applied to the tobacco of the tobacco layer, thereby crushing the tobacco. Can be greatly reduced, and the subsequent forming of the tobacco rod can be carried out stably.
In addition, since the maximum value of the squeeze of the squeezed surface with respect to the virtual surface described above is limited to 1.6 mm or less, it is possible to sufficiently exhibit the effect of reducing the crushing of cigarettes without excessive labor for processing the squeezed surface. Become.

図１はシガレット製造機を概略的に示し、このシガレット製造機は図１でみて、その右端部にたばこバンド２を備えている。このたばこバンド２は無端状のサクションバンドからなり、その下面に刻たばこを層状に吸着して刻たばこ層ＴＬを形成し、そして、その走行に伴い、矢印Ａで示す左方に移送する。ここでの刻たばこは、前述したように通常の刻たばこに処理刻たばこが混合された混合物である。   FIG. 1 schematically shows a cigarette manufacturing machine, which has a cigarette band 2 at its right end as seen in FIG. The cigarette band 2 is composed of an endless suction band, and the cigarettes are adsorbed in layers on the lower surface thereof to form a cigarette layer TL, and the cigarette band 2 is moved to the left as indicated by an arrow A as it travels. The cigarette here is a mixture in which treated cigarettes are mixed with normal cigarettes as described above.

たばこバンド２の左方には巻上部４が配置されており、この巻上部４は無端状のガニチャテープ６を備えている。このガニチャテープ６は成形ベッド（図１に図示せず）の成形溝内を延びており、この成形溝は刻たばこ層ＴＬの移送方向に延びている。ガニチャテープ６は、駆動ドラム８に巻き付くようにして駆動ドラム８を通過し、駆動ドラム８の回転に伴い、成形ベッドの成形溝内を刻たばこ層ＴＬの移送方向に走行する。   The upper part 4 is arranged on the left side of the cigarette band 2, and the upper part 4 includes an endless garniture tape 6. This garniture tape 6 extends in a forming groove of a forming bed (not shown in FIG. 1), and this forming groove extends in the transfer direction of the tobacco layer TL. The garnish tape 6 passes through the drive drum 8 so as to be wound around the drive drum 8, and travels in the transfer direction of the tobacco layer TL in the forming groove of the forming bed as the drive drum 8 rotates.

更に、ガニチャテープ６には巻紙Ｐが導かれており、この巻紙Ｐはガニチャテープ６上に重ね合わされ、ガニチャテープ６とともに成形ベッドの成形溝内を延びている。
図１から明らかなように巻紙Ｐには、たばこバンド２から刻たばこ層ＴＬが供給され、ここでの供給は、刻たばこ層ＴＬをたばこバンド２からシュー１０により剥離させることでなされる。 Further, the wrapping paper P is guided to the garniture tape 6, and the wrapping paper P is overlapped on the garnishing tape 6 and extends in the forming groove of the forming bed together with the garnishing tape 6.
As is clear from FIG. 1, the cigarette layer TL is supplied from the cigarette band 2 to the wrapping paper P, and the supply here is performed by separating the cigarette layer TL from the cigarette band 2 by the shoe 10.

また、巻上部４には、シュー１０の下流にビークとも称されるトング１２や、ショートホルダ１４、ロングホルダ１６及びヒータ１８等が順次配置されており、シュー１０及びトング１２は成形ベッドと協働して刻たばこ層ＴＬのための圧縮成形装置を構成する。
より詳しくは、ガニチャテープ６が走行され、巻紙Ｐ上に供給された刻たばこ層ＴＬがガニチャテープ６とともに圧縮成形装置のトング１２を通過する際、トング１２は成形ベッドの成形溝と協働して、刻たばこ層ＴＬを棒状に圧縮成形する。この後、トング１２を通過した刻たばこ層ＴＬは、ガニチャテープ６及び巻紙Ｐとともにショートホルダ１４、ロングホルダ１６及びヒータ１８を通過し、この際、公知のように刻たばこ層ＴＬは巻紙Ｐにより連続して包み込まれ、たばこロッドＴＲが成形される。ここで、巻紙Ｐの両側縁は糊を介して互いに重ね合わされ、たばこロッドＴＲに巻紙Ｐのシームを形成する。なお、このシームの糊はたばこロッドＴＲがヒータ１８を通過する際に乾燥される。 Further, a tong 12, also referred to as a beak, a short holder 14, a long holder 16, a heater 18 and the like are sequentially arranged on the winding part 4 downstream of the shoe 10, and the shoe 10 and the tongue 12 cooperate with the molding bed. It works and constitutes a compression molding apparatus for the tobacco layer TL.
More specifically, when the garniture tape 6 is run and the cut tobacco layer TL supplied on the wrapping paper P passes through the tongs 12 of the compression molding apparatus together with the garniture tape 6, the tongs 12 cooperate with the molding grooves of the molding bed, The cut tobacco layer TL is compression-molded into a rod shape. Thereafter, the tobacco layer TL that has passed through the tongue 12 passes through the short holder 14, the long holder 16 and the heater 18 together with the garniture tape 6 and the wrapping paper P. At this time, the tobacco layer TL is continuously formed by the wrapping paper P as is well known. Then, the tobacco rod TR is molded. Here, both side edges of the wrapping paper P are overlapped with each other via glue to form a seam of the wrapping paper P on the tobacco rod TR. The seam paste is dried when the tobacco rod TR passes through the heater 18.

この後、たばこロッドＴＲは巻上部４から送出されて切断部２０を通過し、この際、切断部２０はたばこロッドＴＲを所定長さ毎に切断し、個々のシガレットロッドＣＲを形成する。なお、シガレットロッドＣＲは、フィルタシガレットにおけるシガレットの２本分の長さを有する。
図２は、前述したトング１２の詳細を示す。 Thereafter, the cigarette rod TR is sent from the winding part 4 and passes through the cutting part 20. At this time, the cutting part 20 cuts the cigarette rod TR by a predetermined length to form individual cigarette rods CR. The cigarette rod CR has a length corresponding to two cigarettes in the filter cigarette.
FIG. 2 shows details of the tongue 12 described above.

トング１２は、図２中に２点鎖線で示す成形ベッド２２の上方に配置され、その下面が平滑な絞り込み面２４に形成されている。この絞り込み面２４は、成形ベッド２２の成形溝と協働して刻たばこ層ＴＬのためのトンネル状の圧縮成形通路２６を形成し、この圧縮成形通路２６の入口から出口に亘って延びている。
なお、図２から明らかなように、前述したシュー１０はトング１２に取り付けられており、また、トング１２はその内部に冷却通路２８が形成されている。この冷却通路２８は外部からの冷却水の循環供給を受け、トング１２を冷却する。 The tongue 12 is disposed above the forming bed 22 indicated by a two-dot chain line in FIG. 2, and its lower surface is formed as a smooth narrowed surface 24. The narrowing surface 24 forms a tunnel-like compression molding passage 26 for the tobacco layer TL in cooperation with the molding groove of the molding bed 22, and extends from the inlet to the outlet of the compression molding passage 26. .
As apparent from FIG. 2, the shoe 10 described above is attached to the tongue 12, and the tongue 12 has a cooling passage 28 formed therein. The cooling passage 28 receives a circulating supply of cooling water from the outside and cools the tongue 12.

より詳しくは、絞り込み面２４は、圧縮成形通路２６の軸線に沿い且つ軸線を含む断面でみたとき、前述した刻みたばこ層ＴＬの移送方向に沿って凹状をなす円弧形状に形成されており、ここでの円弧形状の曲率半径は図２中、参照符号Ｒで示されている。一方、絞り込み面２４を圧縮成形通路２６の横断面でみたとき、図３から明らかなように、絞り込み面２４は圧縮成形通路２６の幅方向に沿う凹状の円弧形状をなし、ここでの円弧形状の曲率半径は本実施例の場合、圧縮成形通路２６の入口から出口に亘って一定であるものの、出口での円弧長は入口での円弧長に比べて短い。   More specifically, the narrowing surface 24 is formed in an arc shape that forms a concave shape along the transfer direction of the engraved tobacco layer TL described above when viewed in a section along the axis of the compression molding passage 26 and including the axis. The radius of curvature of the arc shape is indicated by the reference symbol R in FIG. On the other hand, when the squeezed surface 24 is viewed in a cross section of the compression molding passage 26, as is clear from FIG. 3, the squeezing surface 24 has a concave arc shape along the width direction of the compression molding passage 26. In this embodiment, the radius of curvature is constant from the inlet to the outlet of the compression molding passage 26, but the arc length at the outlet is shorter than the arc length at the inlet.

更に、図３には、前述した成形ベッド２２の成形溝３０もまた示されており、この成形溝３０は横断面でみて円弧形状をなし、その曲率半径もまた圧縮成形通路２６の入口から出口に亘って徐々に減少する。それ故、ガニチャテープ６が巻紙Ｐとともに成形溝３０内を走行案内されるとき、これらガニチャテープ６及び巻紙Ｐは成形溝３０の円弧形状に従い、図３から明らかなようにＵ字状に曲成される。   Further, FIG. 3 also shows a molding groove 30 of the above-described molding bed 22, which has an arc shape when viewed in cross section, and its radius of curvature is also from the inlet of the compression molding passage 26 to the outlet. Gradually decreases over time. Therefore, when the garniture tape 6 is guided in the molding groove 30 together with the wrapping paper P, the garniture tape 6 and the wrapping paper P are bent into a U-shape as apparent from FIG. .

次に、図４及び図５を追加し、トング１２の絞り込み面２４に関して更に詳述する。
圧縮成形通路２６の入口及び出口側に位置した絞り込み面２４の入口縁及び出口縁を参照符号２４ａ，２４ｂで示し、これら入口縁２４ａ及び出口縁２４ｂを繋ぐべく圧縮成形通路２６の軸線方向（刻たばこ層ＴＬの走行方向）に延びる２点鎖線の仮想円筒面３２を考えたとき、このような仮想円筒面３２に対して、絞り込み面２４は図４及び図５から明らかなように外側に膨らんだものとなっている。そして、絞り込み面２４と仮想円筒面３２との間にて規定される絞り込み面２４の膨らみの最大値Ｈは約１．６ｍｍ以下であるのが好ましく、本実施例では１．２ｍｍに設定されている。なお、この場合、絞り込み面２４の曲率半径Ｒは６９０ｍｍである。 Next, FIGS. 4 and 5 will be added, and the narrowing surface 24 of the tongue 12 will be described in further detail.
The inlet and outlet edges of the narrowing surface 24 located on the inlet and outlet sides of the compression molding passage 26 are denoted by reference numerals 24a and 24b, and the axial direction (indentation) of the compression molding passage 26 is connected to connect the inlet edge 24a and the outlet edge 24b. When the virtual cylindrical surface 32 of a two-dot chain line extending in the traveling direction of the tobacco layer TL is considered, the narrowing surface 24 swells outward as apparent from FIGS. 4 and 5 with respect to the virtual cylindrical surface 32. It has become. The maximum value H of the bulge of the narrowed surface 24 defined between the narrowed surface 24 and the virtual cylindrical surface 32 is preferably about 1.6 mm or less, and is set to 1.2 mm in this embodiment. Yes. In this case, the radius of curvature R of the narrowed surface 24 is 690 mm.

上述したトング１２の絞り込み面２４によれば、この絞り込み面２４が前述したように圧縮成形通路２６の軸線方向に沿って凹状をなす円弧形状に形成されていることから、刻たばこ層ＴＬが圧縮成形通路２６に進入しても、絞り込み面２４は刻たばこ層ＴＬを直ちに圧縮することはない。即ち、圧縮成形通路２６の上流領域にて、刻たばこ層ＴＬは実質的に圧縮されることはない。   According to the squeezed surface 24 of the tongue 12 described above, the squeezed tobacco layer TL is compressed because the squeezed surface 24 is formed in a concave arc shape along the axial direction of the compression molding passage 26 as described above. Even when entering the forming passage 26, the narrowing surface 24 does not immediately compress the tobacco layer TL. That is, the tobacco layer TL is not substantially compressed in the upstream region of the compression molding passage 26.

しかしながら、圧縮成形通路２６内の刻たばこ層ＴＬが上流領域から下流領域に向けて進行するに連れて、絞り込み面２４は刻たばこ層ＴＬを徐々に圧縮し、そして、刻たばこ層ＴＬが圧縮成形通路２６の出口を通過するとき、刻たばこ層ＴＬは絞り込み面２４の出口縁２４ｂと成形溝３０とによって決定される径まで絞り込まれる。
この際、絞り込み面２４から圧縮成形通路２６の軸線に対する垂直方向に刻たばこ層ＴＬに加えられる圧縮力を考えたとき、圧縮成形通路２６の上流領域での刻たばこ層ＴＬの圧縮力は圧縮成形通路２６の下流領域での場合に比べて弱いことから、下流領域にて刻たばこ層ＴＬに加えられる圧縮力は上流領域側に逃げることができる。それ故、刻たばこ層ＴＬが圧縮成形通路２６の出口から送出される際、刻たばこ層ＴＬの刻たばこに過大な圧縮力が加わることはなく、刻たばこの破砕を大きく低減することができる。 However, as the tobacco layer TL in the compression molding passage 26 advances from the upstream region toward the downstream region, the narrowing surface 24 gradually compresses the tobacco layer TL, and the tobacco layer TL is compression molded. When passing through the outlet of the passage 26, the tobacco layer TL is squeezed to a diameter determined by the outlet edge 24 b of the squeezing surface 24 and the molding groove 30.
At this time, when considering the compression force applied to the tobacco layer TL in the direction perpendicular to the axis of the compression molding passage 26 from the narrowed surface 24, the compression force of the tobacco layer TL in the upstream region of the compression molding passage 26 is compression molding. Since it is weaker than that in the downstream region of the passage 26, the compressive force applied to the tobacco layer TL in the downstream region can escape to the upstream region side. Therefore, when the cut tobacco layer TL is delivered from the outlet of the compression molding passage 26, an excessive compressive force is not applied to the cut tobacco of the cut tobacco layer TL, and the crushing of the cut tobacco can be greatly reduced.

従来のトングを使用して成形されたたばこロッドＴＲ内の刻たばこの平均粒度Ｒ0、そして、絞り込み面２４の膨らみの程度、即ち、その最大値Ｈで表される膨らみ度を種々に有する絞り込み面を備えたトングを用意し、これらトングを使用して成形されたたばこロッドＴＲ内の刻たばこの平均粒度ＲHをそれぞれ測定し、平均粒度Ｒ0に対する平均粒度ＲHの比、即ち、平均粒度比（ＲH／Ｒ0）を図６に示す。なお、従来のトングの絞り込み面はは圧縮成形通路の入口から出口に向けて先細状となる円錐面の一部から形成されている。   An average particle size R0 of cigarettes in the tobacco rod TR formed using conventional tongs, and a degree of swelling of the narrowed surface 24, that is, a narrowed surface having various degrees of swelling represented by its maximum value H. And measuring the average particle size RH of the cigarettes in the tobacco rod TR molded using these tongs, and the ratio of the average particle size RH to the average particle size R0, that is, the average particle size ratio (RH) / R0) is shown in FIG. The narrowing surface of the conventional tongue is formed from a part of a conical surface that tapers from the inlet to the outlet of the compression molding passage.

図６から明らかなように、本実施例のように膨らみ度（Ｈ）が１．２ｍｍの絞り込み面２４を有するトング１２の場合、その平均粒度比は１．０６を超えており、本実施例のトング１２は従来のトングよりも、刻たばこの破砕を低減できることが判る。
また、図６は、絞り込み面２４に膨らみ度が与えられていれば、従来のトングに比べて刻たばこの破砕を低減できることを示しているが、膨らみ度（Ｈ）が１．２ｍｍを超えると、平均粒度比が一定の値に収束することを示す。 As is apparent from FIG. 6, in the case of the tongue 12 having the narrowed surface 24 with a swelling degree (H) of 1.2 mm as in this embodiment, the average particle size ratio exceeds 1.06. It can be seen that the tongs 12 of the present invention can reduce the crushing of cigarettes more than conventional tongs.
Moreover, FIG. 6 shows that if the degree of swelling is given to the narrowed surface 24, it is possible to reduce the crushing of the chopped tobacco as compared with the conventional tongue, but when the degree of swelling (H) exceeds 1.2 mm, FIG. , Indicating that the average particle size ratio converges to a constant value.

一方、膨らみ度（Ｈ）が１．６ｍｍを超えれば、絞り込み面２４の加工に要する手間が飛躍的に増加することを考慮すれば、絞り込み面２４に付与すべき膨らみ度（Ｈ）は１．６ｍｍ以下であるのが好ましく、そして、絞り込み面２４の加工と平均粒度比の増加の両方を勘案した場合には、本実施例のように絞り込み面２４は１．２ｍｍの膨らみ度（Ｈ）を有しているのが最適となる。   On the other hand, if the degree of swelling (H) exceeds 1.6 mm, the degree of swelling (H) to be imparted to the narrowed surface 24 is 1. considering that the labor required for processing the narrowed surface 24 increases dramatically. 6 mm or less is preferable, and when considering both processing of the narrowed surface 24 and an increase in the average particle size ratio, the narrowed surface 24 has a swell degree (H) of 1.2 mm as in this embodiment. It is optimal to have.

本発明は上述した一実施例に制約されるものでなく、種々の変形が可能であり、例えば、トング１２はその内部に冷却通路２８を備えているが、本発明の実施に際し、冷却通路２８は必要不可欠なものではない。また、シュー１０の下面は平坦面であってもよいが、絞り込み面２４の入口縁２４ａに円滑に連なっている方が望ましい。   The present invention is not limited to the above-described embodiment, and various modifications are possible. For example, the tongue 12 includes a cooling passage 28 therein, but the cooling passage 28 is provided when the present invention is implemented. Is not indispensable. Further, the lower surface of the shoe 10 may be a flat surface, but it is desirable that the shoe 10 be smoothly connected to the inlet edge 24a of the narrowing surface 24.

シガレット製造機を示した概略構成図である。It is the schematic block diagram which showed the cigarette manufacturing machine. 一実施例のトングを示した断面図である。It is sectional drawing which showed the tongue of one Example. 圧縮成形通路の入口側からみたトングの端面図である。It is an end view of the tongue seen from the inlet side of the compression molding passage. 仮想円筒面からの絞り込み面の膨らみを誇張して示した図である。It is the figure which exaggerated and showed the swelling of the narrowing-down surface from a virtual cylindrical surface. 絞り込み面及び仮想円筒面を示した斜視図である。It is the perspective view which showed the narrowing down surface and the virtual cylindrical surface. 絞り込み面の膨らみ度と平均粒度比との関係を示したグラフである。It is the graph which showed the relationship between the degree of swelling of a narrowing surface, and an average particle size ratio.

符号の説明Explanation of symbols

１２ トング
２２ 成形ベッド
２４ 絞り込み面
２４ａ 入口縁
２４ｂ 出口縁
２６ 圧縮成形通路
３０ 成形溝
３２ 仮想円筒面
Ｈ 膨らみ度（最大値）
Ｐ 巻紙
Ｒ 曲率半径
ＴＬ 刻たばこ層
ＴＲ たばこロッド
ＣＲ シガレットロッド 12 Tongue 22 Molding bed 24 Narrowed surface 24a Inlet edge 24b Outlet edge 26 Compression molding passage 30 Molding groove 32 Virtual cylindrical surface H Swelling degree (maximum value)
P Wrapping paper R Radius of curvature TL Tobacco layer TR Tobacco rod CR Cigarette rod

Claims (3)

層状に形成された刻たばこが巻紙とともに一方向に走行する過程にて、前記刻たばこ層を圧縮成形装置により棒状に圧縮成形した後、巻紙により連続的に包み込んでたばこロッドを成形し、更に、前記たばこロッドを所定の長さ毎に切断してシガレットを製造するシガレット製造機において、
前記圧縮成形装置は、
前記刻たばこ層の圧縮成形通路を形成するためのトングであって、前記圧縮成形通路の一部を形成すべく前記圧縮成形通路の入口から出口に亘って延び、前記巻紙に向けて前記刻たばこ層を圧縮する絞り込み面を有する、トングを備え、
前記絞り込み面は、前記圧縮成形通路の軸線に沿って凹状をなす円弧形状に形成されていることを特徴とするシガレット製造機の刻たばこ層圧縮成形装置。 In the process in which the cigarette formed in a layer shape travels in one direction together with the wrapping paper, the cigarette layer is compression-molded into a rod shape by a compression molding apparatus, and then the cigarette rod is continuously wrapped by the wrapping paper, and further, In a cigarette manufacturing machine that manufactures a cigarette by cutting the tobacco rod every predetermined length,
The compression molding apparatus comprises:
A tongue for forming a compression molding passage of the cut tobacco layer, extending from an inlet of the compression molding passage to an outlet to form a part of the compression molding passage, and toward the wrapping paper. With a tongs having a squeezing surface to compress the layer,
The cigarette layer compression molding apparatus of a cigarette manufacturing machine, wherein the narrowing surface is formed in an arc shape that is concave along the axis of the compression molding passage. 前記絞り込み面の入口縁から前記出口に位置した前記絞り込み面の出口縁とを繋ぐべく前記刻たばこ層の走行方向に延びる仮想円筒面でみて、前記絞り込み面は、前記仮想円筒面よりも外側に膨らんでいることを特徴とする請求項１に記載のシガレット製造機の刻たばこ層圧縮成形装置。   When viewed from the virtual cylindrical surface extending in the traveling direction of the tobacco layer to connect the entrance edge of the narrowed surface to the exit edge of the narrowed surface located at the exit, the narrowed surface is located outside the virtual cylindrical surface. The cigarette making machine cigarette layer compression molding apparatus according to claim 1, wherein the cigarette making machine is inflated. 前記絞り込み面と前記仮想円筒面との間の膨らみの最大値は、約１．６ｍｍ以下に設定されていることを特徴とする請求項２に記載のシガレット製造機の刻たばこ層圧縮成形装置。   The cigarette layer compression molding apparatus of the cigarette manufacturing machine according to claim 2, wherein a maximum value of a bulge between the narrowed surface and the virtual cylindrical surface is set to about 1.6 mm or less.
JP2008028869A 2008-02-08 2008-02-08 Shredded tobacco layer compression molding apparatus of cigarette-making machine Pending JP2009183248A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023012936A1 (en) 2021-08-04 2023-02-09 日本たばこ産業株式会社 Equipment and method for winding filling rod

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023012936A1 (en) 2021-08-04 2023-02-09 日本たばこ産業株式会社 Equipment and method for winding filling rod
KR20240023633A (en) 2021-08-04 2024-02-22 니뽄 다바코 산교 가부시키가이샤 Hoisting machine and hoisting method of charging rod

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