JP6260188B2 - Green tire storage device - Google Patents

Green tire storage device Download PDF

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JP6260188B2
JP6260188B2 JP2013215223A JP2013215223A JP6260188B2 JP 6260188 B2 JP6260188 B2 JP 6260188B2 JP 2013215223 A JP2013215223 A JP 2013215223A JP 2013215223 A JP2013215223 A JP 2013215223A JP 6260188 B2 JP6260188 B2 JP 6260188B2
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green tire
placement
inclined surface
inclination angle
storage device
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JP2015077707A (en
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佐藤　利之
佐藤　　利之
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Yokohama Rubber Co Ltd
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Yokohama Rubber Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/0016—Handling tyres or parts thereof, e.g. supplying, storing, conveying
    • B29D2030/0022—Handling green tyres, e.g. transferring or storing between tyre manufacturing steps

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  • Tyre Moulding (AREA)

Description

本発明は、グリーンタイヤの保管装置に関し、さらに詳しくは、グリーンタイヤを横倒し状態で一時的に保管する際に、局部的に大きく変形し易い下側ショルダー部近傍を、従来に比して変形量を抑えつつグリーンタイヤを保管することができるグリーンタイヤの保管装置に関するものである。   The present invention relates to a storage device for a green tire, and more specifically, when the green tire is temporarily stored in a laid state, the vicinity of the lower shoulder portion, which is easily deformed locally, The present invention relates to a green tire storage device that can store a green tire while suppressing the above-described problem.

空気入りタイヤの製造工程では、成形したグリーンタイヤを、加硫するまでの間に一時的に横倒し状態で保管することがある。例えば、大型のオフロード車両に装着される重荷重用タイヤは、グリーンタイヤの重量が大きくなるので、保管している間に自重によって変形が生じ易い。特に、トレッド部やベルト層は他の部位に比して相対的に重いので、下側ショルダー部近傍は局部的に大きく変形し易い。さらには、大型の重荷重用タイヤは１本当たりに要する加硫時間が長いので、先に加硫しているグリーンタイヤの加硫が完了して加硫装置が空くまで、次に加硫するグリーンタイヤを長時間待機させなければならないことがある。例えば、半日〜１日程度グリーンタイヤを待機させることもある。保管時間が長くなる程、グリーンタイヤの変形は大きくなる。   In the manufacturing process of a pneumatic tire, the molded green tire may be temporarily laid down before being vulcanized. For example, a heavy-duty tire mounted on a large off-road vehicle has a large weight of a green tire, and thus is easily deformed by its own weight during storage. In particular, since the tread portion and the belt layer are relatively heavier than other portions, the vicinity of the lower shoulder portion tends to be greatly deformed locally. Furthermore, since the vulcanization time required for each large heavy-duty tire is long, the next vulcanized green is completed until the vulcanization of the first vulcanized green tire is completed and the vulcanizer is vacant. Sometimes tires have to wait for a long time. For example, the green tire may be waited for about half a day to one day. The longer the storage time, the greater the deformation of the green tire.

このように横倒し状態にしたグリーンタイヤの変形が過大になると、ベルト層が予め設定された位置よりも下側にずれたり、下側に位置するカーカス層のコードに望ましくない屈曲が生じる等、加硫したタイヤの品質低下につながるという問題がある。そこで、グリーンタイヤの変形を防止する装置が種々提案されている（例えば、特許文献１、２参照）。   When the deformation of the green tire placed on the side in this way becomes excessive, the belt layer is displaced downward from a preset position, or the cord of the carcass layer located below is undesirably bent. There is a problem that the quality of the vulcanized tire is reduced. Thus, various devices for preventing the deformation of the green tire have been proposed (see, for example, Patent Documents 1 and 2).

特許文献１では、横倒し状態にしたグリーンタイヤの下側ショルダー部および下側サイドウォール部をそれぞれ細幅の環状の受けリングにより支持する外側支持体を備えた一時保管装置が提案されている。この外側支持体を流体シリンダによって上昇させることにより、両ビード部の中間位置とドレッドセンターを同一高さに保持して、グリーンタイヤの変形を抑制する。しかしながら、細幅の環状の受けリングに当接して保持される下側ショルダー部、下側サイドウォール部には局部的な変形が生じ易い。また、下側ショルダー部と下側サイドウォール部との間の部分は、これら環状の受けリングによって保持されないので、局部的な変形を十分に抑制することができないという問題がある。   Patent Document 1 proposes a temporary storage device including an outer support body that supports a lower shoulder portion and a lower sidewall portion of a green tire that are in a laid-down state by a narrow annular receiving ring. By raising the outer support by a fluid cylinder, the intermediate position of both bead portions and the dread center are held at the same height, and deformation of the green tire is suppressed. However, local deformation tends to occur in the lower shoulder portion and the lower sidewall portion held in contact with and held by the narrow annular receiving ring. Moreover, since the part between a lower shoulder part and a lower side wall part is not hold | maintained by these cyclic | annular receiving rings, there exists a problem that a local deformation | transformation cannot fully be suppressed.

特許文献２では、横倒し状態にしたグリーンタイヤのタイヤ外径の７５％〜１１０％の範囲を支持する断面くさび状の第２の受け皿を備えた保管装置が提案されている。この保管装置では、第２の受け皿の載置面の傾斜角度を変化させることにより、グリーンタイヤのセンターの高さをトレッドモールドのセンターの位置に一致させる。即ち、この保管装置は、第２の受け皿と当接するグリーンタイヤの下側の部分の局部的な変形を抑制するのではなく、グリーンタイヤのセンターの高さを調節することだけに注目している。それ故、一時保管中のグリーンタイヤの下側の部分の局部的な変形を十分に抑制することができない。   Patent Document 2 proposes a storage device that includes a second receiving tray having a wedge-shaped cross section that supports a range of 75% to 110% of the tire outer diameter of a green tire that has been laid down. In this storage device, the height of the center of the green tire is made to coincide with the position of the center of the tread mold by changing the inclination angle of the mounting surface of the second tray. That is, this storage device focuses only on adjusting the height of the center of the green tire, rather than suppressing local deformation of the lower portion of the green tire that contacts the second tray. . Therefore, local deformation of the lower part of the green tire during temporary storage cannot be sufficiently suppressed.

特開２００６−２１４５６号公報JP 2006-21456 A 特開２０１１−１８３５５５号公報JP 2011-183555 A

本発明の目的は、グリーンタイヤを横倒し状態で一時的に保管する際に、局部的に大きく変形し易い下側ショルダー部近傍を、従来に比して変形量を抑えつつグリーンタイヤを保管することができるグリーンタイヤの保管装置を提供することにある。   It is an object of the present invention to store a green tire while suppressing the deformation amount compared with the conventional case in the vicinity of the lower shoulder portion, which is easily deformed locally when the green tire is temporarily stored in a lying state. An object of the present invention is to provide a storage device for green tires that can be used.

上記目的を達成するため本発明のグリーンタイヤの保管装置は、グリーンタイヤが横倒し状態で載置される載置台を備えたグリーンタイヤの保管装置において、前記載置台の上側表面に、外周側に向かって上方に傾斜する傾斜面を有して前記グリーンタイヤの下側サイド部が載置される環状のサイド部載置部と、サイド部載置部の外周側に連設されて前記グリーンタイヤの下側ショルダー部が載置される環状のショルダー部載置部とが形成され、ショルダー部載置部がサイド部載置部の傾斜面に連続して、このサイド部載置部の傾斜面よりも傾斜角度が大きい傾斜面、または、サイド部載置部の傾斜面を外周側に延長した位置よりも上方に位置する曲面を有し、前記サイド部載置部が、第１載置部と、第１載置部の外周側に連設される第２載置部とで構成され、第１載置部の傾斜面の傾斜角度よりも第２載置部の傾斜面の傾斜角度が大きく設定されていることを特徴とする。 In order to achieve the above object, a green tire storage device according to the present invention is a green tire storage device including a mounting table on which a green tire is placed in a laid down state. An annular side portion placement portion on which the lower side portion of the green tire is placed with an inclined surface that is inclined upward, and an outer peripheral side of the side portion placement portion. An annular shoulder portion placement portion on which the lower shoulder portion is placed is formed, and the shoulder portion placement portion is continuous with the inclined surface of the side portion placement portion, and from the inclined surface of the side portion placement portion. the inclination surface inclination angle is large, or have a curved surface which is located above the position extending to the outer peripheral side of the inclined surface of the side portion mounting portion, the side portion mounting portion includes a first mounting portion The second mounting connected to the outer peripheral side of the first mounting portion It is composed of a section, characterized in that the inclined angle of the inclined surface of the first mounting portion the inclination angle of the inclined surface of the second mounting portion is set larger.

本発明によれば、横倒し状態のグリーンタイヤの下側サイド部が、この下側サイド部と同方向に傾斜したサイド部載置部に載置されるので、下側サイド部を過大に圧縮することになく保持できる。グリーンタイヤの下側サイド部よりも外周側のショルダー部は、サイド部載置部の傾斜面に連続するより傾斜角度が大きい傾斜面、または、サイド部載置部の傾斜面を外周側に延長した位置よりも上方に位置する曲面を有するショルダー部載置部に載置されて、下側サイド部よりも上方位置に保持されるので、成形されたグリーンタイヤはその外形を維持するように保持される。これにより、局部的に大きく変形し易い下側ショルダー部近傍を、従来に比して変形量を抑えつつグリーンタイヤを一時的に保管することが可能になる。   According to the present invention, since the lower side part of the green tire in a horizontally lying state is placed on the side part placing part inclined in the same direction as the lower side part, the lower side part is excessively compressed. You can keep it. The shoulder portion on the outer peripheral side of the lower side portion of the green tire has an inclined surface having a larger inclination angle than the inclined surface of the side portion mounting portion, or the inclined surface of the side portion mounting portion is extended to the outer peripheral side. Since it is placed on the shoulder part placement part that has a curved surface that is located above the position where it is placed, and is held at a position above the lower side part, the molded green tire is retained to maintain its outer shape. Is done. As a result, it is possible to temporarily store the green tire in the vicinity of the lower shoulder portion, which is easily deformed locally, while suppressing the amount of deformation as compared with the conventional case.

横倒し状態のグリーンタイヤを一時的に保管している本発明のグリーンタイヤの保管装置を例示する縦断面図である。It is a longitudinal cross-sectional view which illustrates the storage apparatus of the green tire of this invention which is storing the green tire of a sideways state temporarily. 図１の平面図である。It is a top view of FIG. 図１の載置台にグリーンタイヤを載置する工程を一部拡大して例示する縦断面図である。FIG. 2 is a longitudinal sectional view illustrating a partially enlarged process of mounting a green tire on the mounting table in FIG. 1. 図３の載置台の変形例を示す縦断面図である。It is a longitudinal cross-sectional view which shows the modification of the mounting base of FIG.

以下、本発明のグリーンタイヤの保管装置を図に示した実施形態に基づいて説明する。   Hereinafter, a storage device for a green tire according to the present invention will be described based on an embodiment shown in the drawings.

図１、図２に例示する本発明のグリーンタイヤの保管装置１の実施形態は、移動用ローラ２ａを備えたプラットフォーム２を有している。プラットフォーム２には、グリーンタイヤが横倒し状態で載置される環状の載置台５が設置されている。載置台５の中心部には、支柱３ａ、３ｂが立設されている。下方の支柱３ａに上方の支柱３ｂが挿入される構造であり、下方の支柱３ａから上方の支柱３ｂを任意の長さだけ突出させて、その位置で固定できる構造になっている。   The embodiment of the green tire storage device 1 of the present invention illustrated in FIGS. 1 and 2 has a platform 2 having a moving roller 2a. The platform 2 is provided with an annular mounting table 5 on which green tires are mounted in a lying state. Supports 3 a and 3 b are erected at the center of the mounting table 5. The upper column 3b is inserted into the lower column 3a, and the upper column 3b protrudes from the lower column 3a by an arbitrary length and can be fixed at that position.

支柱３ｂの上端部には円盤状のベースプレート４が固定されている。ベースプレート４は、グリーンタイヤＧの開口よりも小径である。載置台５の上方に配置されるこのベースプレート４には、ゴム製の膨張収縮体８が載置されている。膨張収縮体８は例えば、環状のゴムチューブ等であり、外形状が円形のものである。膨張収縮体８には、給排気管１０を通じてエアコンプレッサ等の給気手段９が接続されている。   A disc-shaped base plate 4 is fixed to the upper end portion of the column 3b. The base plate 4 has a smaller diameter than the opening of the green tire G. A rubber expansion / contraction body 8 is mounted on the base plate 4 disposed above the mounting table 5. The expansion / contraction body 8 is, for example, an annular rubber tube or the like, and has an outer shape that is circular. An air supply means 9 such as an air compressor is connected to the expansion / contraction body 8 through an air supply / exhaust pipe 10.

図３に例示するように、載置台５の上側表面には、外周側に向かって上方に傾斜する傾斜面を有する環状のサイド部載置部６と、サイド部載置部６の外周側に連設された環状のショルダー部載置部７とが形成されている。サイド部載置部６、ショルダー部載置部７にはそれぞれ、横倒し状態のグリーンタイヤＧの下側サイド部ｇ２、下側ショルダー部ｇ１が載置される。下側サイド部ｇ２は、例えばグリーンタイヤＧの下側面の半径Ｈの８５％以上９５％未満の範囲である。下側ショルダー部ｇ１は、例えばグリーンタイヤＧの下側面の半径Ｈの９５％以上の範囲である。   As illustrated in FIG. 3, on the upper surface of the mounting table 5, an annular side portion mounting portion 6 having an inclined surface inclined upward toward the outer peripheral side, and an outer peripheral side of the side portion mounting portion 6. An annular shoulder portion placement portion 7 that is continuously provided is formed. On the side portion placement portion 6 and the shoulder portion placement portion 7, the lower side portion g <b> 2 and the lower shoulder portion g <b> 1 are placed, respectively, in the horizontally laid green tire G. The lower side portion g2 is, for example, in the range of 85% or more and less than 95% of the radius H of the lower side surface of the green tire G. The lower shoulder portion g1 is, for example, in the range of 95% or more of the radius H of the lower side surface of the green tire G.

この実施形態では、外周側に向かって上方に傾斜する傾斜面を有するサイド部載置部６が、第１載置部６Ａと第２載置部６Ｂとの２つの傾斜面で構成されている。第１載置部６ＡはグリーンタイヤＧの半径Ｈの８５％以上９０％未満の範囲に対応し、第２載置部６Ｂは半径Ｈの９０％以上９５％未満の範囲に対応する。この第２載置部６ＢはグリーンタイヤＧにおけるベルト層ｇ４の埋設範囲に対応している。   In this embodiment, the side part mounting part 6 which has the inclined surface which inclines upward toward the outer peripheral side is comprised by two inclined surfaces, 6A of 1st mounting parts, and 6B of 2nd mounting parts. . The first placement portion 6A corresponds to a range of 85% to less than 90% of the radius H of the green tire G, and the second placement portion 6B corresponds to a range of 90% to less than 95% of the radius H. The second placement portion 6B corresponds to the embedded range of the belt layer g4 in the green tire G.

サイド部載置部６は、１つの傾斜面、或いは３つ以上の傾斜面で構成することもできる。サイド部載置部６を複数の傾斜面で構成する場合は、外周側の傾斜面ほど傾斜角度を大きく設定する。したがって、この実施形態では、第１載置部６Ａの傾斜角度ａよりも第２載置部６Ｂの傾斜角度ｂが大きく設定されている。尚、本発明における傾斜角度とは水平に対する傾斜角度である。   The side part mounting part 6 can also be comprised by one inclined surface or three or more inclined surfaces. When the side part mounting part 6 is composed of a plurality of inclined surfaces, the inclination angle is set larger as the inclined surface on the outer peripheral side. Therefore, in this embodiment, the inclination angle b of the second placement portion 6B is set larger than the inclination angle a of the first placement portion 6A. In the present invention, the inclination angle is an inclination angle with respect to the horizontal.

ショルダー部載置部７は、サイド部載置部６の傾斜面に連続して形成された傾斜面でり、その傾斜角度ｃはサイド部載置部６の傾斜面よりも大きく設定されている。したがって、この実施形態では、傾斜角度ａ＜傾斜角度ｂ＜傾斜角度ｃの関係になっている。尚、サイド部載置部６の傾斜面の傾斜角度ａ、ｂは、横置き状態で載置台５に載置する直前のグリーンタイヤＧの下側面における半径Ｈの８５％位置と９５％位置とを結んだ線分の傾斜角度ｓ以上に設定することが好ましい。即ち、この実施形態では、第１載置部６Ａの傾斜角度ａを傾斜角度ｓ以上にする。傾斜角度ａは傾斜角度ｓよりも大きくすることがより好ましい。さらに、傾斜角度ｓと第２載置部６Ｂの傾斜面の傾斜角度ｂとの差は５°以上３０°以下に設定することが好ましい。   The shoulder portion placement portion 7 is an inclined surface formed continuously with the inclined surface of the side portion placement portion 6, and the inclination angle c thereof is set larger than the inclined surface of the side portion placement portion 6. . Therefore, in this embodiment, the relationship of inclination angle a <inclination angle b <inclination angle c is established. In addition, the inclination angles a and b of the inclined surface of the side portion mounting portion 6 are 85% and 95% positions of the radius H on the lower surface of the green tire G immediately before being mounted on the mounting table 5 in the horizontal position. It is preferable to set the inclination angle s to be equal to or greater than the line segment connecting the lines. That is, in this embodiment, the inclination angle a of the first mounting portion 6A is set to be equal to or greater than the inclination angle s. More preferably, the inclination angle a is larger than the inclination angle s. Furthermore, the difference between the inclination angle s and the inclination angle b of the inclined surface of the second mounting portion 6B is preferably set to 5 ° or more and 30 ° or less.

この保管装置１を用いてグリーンタイヤＧを横置き状態で一時的に保管する場合は、膨張収縮体８の内部の気体を排出して収縮させた状態で、グリーンタイヤＧを横倒し状態でクレーン等により下方移動させて、図３に例示するように載置台５に載置する。膨張収縮体８はコンパクトに収容されているので、下方移動させて載置台５に載置するグリーンタイヤＧに干渉することを防止できる。それ故、グリーンタイヤＧの内部に膨張収縮体８を円滑にセットすることができる。膨張収縮体８がグリーンタイヤＧの上側ビード部周辺に位置するように、ベースプレート４の高さ位置をセットする、或いは、予めセットしておく。   In the case where the green tire G is temporarily stored in the horizontal state using the storage device 1, the crane or the like in the state where the green tire G is laid down in a state where the gas inside the expansion / contraction body 8 is discharged and contracted. Is moved downward and placed on the mounting table 5 as illustrated in FIG. Since the expansion / contraction body 8 is accommodated in a compact manner, it is possible to prevent the expansion / contraction body 8 from interfering with the green tire G that is moved downward and placed on the placement table 5. Therefore, the expansion / contraction body 8 can be smoothly set inside the green tire G. The height position of the base plate 4 is set or set in advance so that the expansion / contraction body 8 is positioned around the upper bead portion of the green tire G.

次いで、膨張収縮体８の内部に給排気管１０を通じて給気手段９から気体を供給することにより、収縮している膨張収縮体８を膨張させる。これにより、図１に例示したように膨張した膨張収縮体８が、グリーンタイヤＧの上側ビード部周辺の内側に当接して保持する。   Next, the expansion / contraction body 8 that is contracting is expanded by supplying gas from the air supply means 9 through the air supply / exhaust pipe 10 into the expansion / contraction body 8. As a result, the inflated and contracted body 8 inflated as illustrated in FIG. 1 is held in contact with the inside of the periphery of the upper bead portion of the green tire G.

本発明によれば、横倒し状態のグリーンタイヤＧの下側サイド部ｇ２が、この下側サイド部ｇ２と同方向に傾斜したサイド部載置部６に載置されるので、下側サイド部ｇ２を過度に圧縮することになく保持できる。また、グリーンタイヤＧのショルダー部ｇ１は、サイド部載置部６の傾斜面に連続するより傾斜角度が大きい傾斜面を有するショルダー部載置部７に載置されて、下側サイド部ｇ２よりも上方位置に保持されるので、成形されたグリーンタイヤＧはその外形を維持するように保持される。   According to the present invention, the lower side portion g2 of the green tire G in the laid-down state is placed on the side portion placement portion 6 inclined in the same direction as the lower side portion g2, so that the lower side portion g2 Can be maintained without excessive compression. Further, the shoulder portion g1 of the green tire G is placed on the shoulder portion placing portion 7 having an inclined surface having a larger inclination angle than the inclined surface of the side portion placing portion 6, and from the lower side portion g2. Since the green tire G is also held at the upper position, the molded green tire G is held so as to maintain its outer shape.

下側ショルダー部ｇ１の載置台５との最大接触圧Ｐ１は、下側サイド部ｇ２の載置台５との最大接触圧Ｐｓよりも大きくなっている（Ｐ１＞Ｐｓ）。この実施形態では、下側サイド部ｇ２の第２載置部６Ｂとの最大接触圧Ｐｓ２が、第１載置部６Ａとの最大接触圧Ｐｓ１よりも大きくなっている（Ｐｓ２＞Ｐｓ１）ので、Ｐ１＞Ｐｓ２の関係になっている。保管装置１に一時的に保管していたグリーンタイヤＧを加硫するに際しては、先の手順と逆の手順を行なって、グリーンタイヤＧを保管装置１から取り外す。   The maximum contact pressure P1 between the lower shoulder portion g1 and the mounting table 5 is larger than the maximum contact pressure Ps between the lower side portion g2 and the mounting table 5 (P1> Ps). In this embodiment, the maximum contact pressure Ps2 with the second placement part 6B of the lower side part g2 is larger than the maximum contact pressure Ps1 with the first placement part 6A (Ps2> Ps1). P1> Ps2. When vulcanizing the green tire G temporarily stored in the storage device 1, the procedure opposite to the previous procedure is performed to remove the green tire G from the storage device 1.

このように本発明では、グリーンタイヤＧの中で相対的に重量が大きい部分（トレッド部ｇ３の下側に位置する下側ショルダー部ｇ１と、ベルト層ｇ４の下側に位置する部分およびこれに隣接する部分となる下側サイド部ｇ２）を支持するに際して、載置台５の表面形状を特別に工夫している。これにより、局部的に大きく変形し易い下側ショルダー部ｇ１近傍を、従来に比して変形量を抑えつつグリーンタイヤＧを一時的に保管することを可能にしている。これに伴って、グリーンタイヤＧを加硫する際に、ベルト層ｇ４が予め設定された位置よりも下側にずれたり、下側に位置するカーカス層のコードに望ましくない屈曲が生じる等の不具合が防止でき、加硫したタイヤの品質を一定以上の水準に確保できる。   As described above, in the present invention, the portion of the green tire G that is relatively heavy (the lower shoulder portion g1 positioned below the tread portion g3, the portion positioned below the belt layer g4, and the portion thereof) When supporting the lower side part g2) which becomes an adjacent part, the surface shape of the mounting table 5 is specially devised. This makes it possible to temporarily store the green tire G in the vicinity of the lower shoulder portion g1, which is easily deformed locally, while suppressing the amount of deformation as compared with the conventional case. Along with this, when the green tire G is vulcanized, the belt layer g4 is displaced downward from a preset position, or the carcass layer cord located below is undesirably bent. And the quality of the vulcanized tire can be secured to a certain level.

下側サイド部ｇ２の内で、ベルト層ｇ４が埋設された位置はベルト層ｇ４の重量によって一段と重くなっているので、この実施形態のように、サイド部載置部６を第１載置部６Ａと、第２載置部６Ｂとで構成して、第１載置部６Ａの傾斜面の傾斜角度ａよりも第２載置部６Ｂの傾斜面の傾斜角度ｂを大きく設定するとよい。そして、第２載置部６ｂにベルト層ｇ４の埋設位置を位置決めして、グリーンタイヤＧを載置台５に載置する。これにより、下側ショルダー部ｇ１近傍の変形量を一段と抑えつつグリーンタイヤＧを一時保管できるので、加硫したタイヤの品質向上に寄与する。   Since the position where the belt layer g4 is embedded in the lower side portion g2 is further increased by the weight of the belt layer g4, the side portion placement portion 6 is replaced with the first placement portion as in this embodiment. 6A and the 2nd mounting part 6B are comprised, and it is good to set the inclination angle b of the inclined surface of the 2nd mounting part 6B larger than the inclination angle a of the inclined surface of the 1st mounting part 6A. And the embedding position of the belt layer g4 is positioned in the 2nd mounting part 6b, and the green tire G is mounted in the mounting base 5. FIG. Thereby, since the green tire G can be temporarily stored while suppressing the deformation amount near the lower shoulder portion g1, it contributes to improving the quality of the vulcanized tire.

傾斜角度ｓと第２載置部の傾斜面の傾斜角度ｂとの差が５°未満では下側ショルダー部ｇ１近傍の変形量を抑える効果が小さくなる。一方、この差が３０°超になると、グリーンタイヤＧの下側ショルダ部ｇ１の変形量が過大になって、加硫時にゴム流れ不良が生じ易くなる。したがって、上述したように傾斜角度ｓと傾斜角度ｂとの差は５°以上３０°以下にすることが好ましい。   If the difference between the inclination angle s and the inclination angle b of the inclined surface of the second mounting portion is less than 5 °, the effect of suppressing the deformation amount in the vicinity of the lower shoulder portion g1 becomes small. On the other hand, if this difference exceeds 30 °, the deformation amount of the lower shoulder portion g1 of the green tire G becomes excessive, and a rubber flow failure is likely to occur during vulcanization. Therefore, as described above, the difference between the inclination angle s and the inclination angle b is preferably 5 ° or more and 30 ° or less.

図４に例示するように、ショルダー部載置部７はサイド部載置部６の傾斜面を外周側に延長した位置よりも上方に位置する曲面を有する仕様にすることもできる。この仕様によっても上述した実施形態と同様の効果を得ることができる。   As illustrated in FIG. 4, the shoulder portion placement portion 7 may have a specification having a curved surface located above the position where the inclined surface of the side portion placement portion 6 extends to the outer peripheral side. This specification can provide the same effects as those of the above-described embodiment.

グリーンタイヤＧの半径Ｈが例えば６００ｍｍ以上になると重量も非常に大きくなるので、横倒し状態で一時的に保管する際に、下側ショルダー部ｇ１および下側サイド部ｇ２が局部的に大きく変形し易い。それ故、本発明を適用するのが非常に効果的である。タイヤサイズで言うと、リム径の呼びが２４インチ以上の重荷重用タイヤに本発明を適用すると効果的である。この実施形態では、グリーンタイヤＧの上側ビード部周辺を膨張収縮体８により保持する構成になっているが、膨張収縮体８によりグリーンタイヤＧの内周面を全体的に保持する構成にしてもよい。   When the radius H of the green tire G is 600 mm or more, for example, the weight becomes very large, so that the lower shoulder portion g1 and the lower side portion g2 are likely to be greatly deformed locally when temporarily stored in a lying state. . Therefore, it is very effective to apply the present invention. In terms of tire size, it is effective to apply the present invention to a heavy duty tire having a rim diameter of 24 inches or more. In this embodiment, the periphery of the upper bead portion of the green tire G is held by the expansion / contraction body 8, but the inner peripheral surface of the green tire G is entirely held by the expansion / contraction body 8. Good.

タイヤサイズ２７．００Ｒ４９のグリーンタイヤを横倒し状態で保管装置を用いて１時間保管した。保管装置の載置台は、図３に例示した表面形状にして、表１に示すように傾斜角度ａ、ｂ、ｃのみを異ならせた５種類（従来例、比較例１〜２、実施例１〜２）を用いた。傾斜角度ｓ（３３°）は共通である。保管後、加硫を行って保管時に下側ショルダー部であった部分のカーカスコードの意図しない変形量を測定し、結果を表１に示す。測定した変形量が小さい程、下側ショルダー部近傍の変形量を抑えつつグリーンタイヤを保管できたことを示す。   A green tire having a tire size of 27.00R49 was stored for one hour using a storage device in a lying state. The mounting table of the storage device has the surface shape illustrated in FIG. 3 and has five types (conventional example, comparative examples 1 and 2, and example 1) in which only the inclination angles a, b, and c are changed as shown in Table 1. ~ 2) was used. The inclination angle s (33 °) is common. After storage, vulcanization was performed and the unintended deformation amount of the carcass cord in the portion that was the lower shoulder portion at the time of storage was measured. The results are shown in Table 1. It shows that the smaller the measured deformation amount, the green tire could be stored while suppressing the deformation amount near the lower shoulder.

Figure 0006260188
Figure 0006260188

表１の結果から、実施例１、２は、従来例および比較例１、２に比して下側ショルダー部近傍の変形量を抑えつつグリーンタイヤを保管できることが分かる。   From the results in Table 1, it can be seen that Examples 1 and 2 can store green tires while suppressing the amount of deformation in the vicinity of the lower shoulder as compared with the conventional example and Comparative Examples 1 and 2.

１ 保管装置
２ プラットフォーム
２ａ 移動用ローラ
３ａ、３ｂ 支柱
４ ベースプレート
５ 載置台
６ サイド部載置部
６Ａ 第１載置部
６Ｂ 第２載置部
７ ショルダー部載置部
８ 膨張収縮体
９ 給気手段
１０ 給排気管
Ｇ グリーンタイヤ
ｇ１ 下側ショルダー部
ｇ２ 下側サイド部
ｇ３ トレッド部
ｇ４ ベルト層 DESCRIPTION OF SYMBOLS 1 Storage device 2 Platform 2a Movement roller 3a, 3b Support | pillar 4 Base plate 5 Mounting base 6 Side part mounting part 6A 1st mounting part 6B 2nd mounting part 7 Shoulder part mounting part 8 Expansion / contraction body 9 Air supply means 10 Air supply / exhaust pipe G Green tire g1 Lower shoulder g2 Lower side g3 Tread g4 Belt layer

Claims (4)

グリーンタイヤが横倒し状態で載置される載置台を備えたグリーンタイヤの保管装置において、
前記載置台の上側表面に、外周側に向かって上方に傾斜する傾斜面を有して前記グリーンタイヤの下側サイド部が載置される環状のサイド部載置部と、サイド部載置部の外周側に連設されて前記グリーンタイヤの下側ショルダー部が載置される環状のショルダー部載置部とが形成され、ショルダー部載置部がサイド部載置部の傾斜面に連続して、このサイド部載置部の傾斜面よりも傾斜角度が大きい傾斜面、または、サイド部載置部の傾斜面を外周側に延長した位置よりも上方に位置する曲面を有し、前記サイド部載置部が、第１載置部と、第１載置部の外周側に連設される第２載置部とで構成され、第１載置部の傾斜面の傾斜角度よりも第２載置部の傾斜面の傾斜角度が大きく設定されていることを特徴とするグリーンタイヤの保管装置。 In the storage device of the green tire provided with a mounting table on which the green tire is placed in a lying state,
An annular side portion placement portion on which the lower side portion of the green tire is placed on the upper surface of the mounting table on the upper surface of the placement table, and the side portion placement portion. And an annular shoulder portion placement portion on which the lower shoulder portion of the green tire is placed, and the shoulder portion placement portion is continuous with the inclined surface of the side portion placement portion. Te, have a curved surface which is located above the inclined surface inclination angle is larger than the inclined surface of the mounting portion the side portion, or extended the inclined surface of the side portion mounting portion to the outer peripheral-side position, the side The part placement part is composed of a first placement part and a second placement part connected to the outer peripheral side of the first placement part, which is greater than the inclination angle of the inclined surface of the first placement part. 2. A storage device for a green tire, wherein the inclination angle of the inclined surface of the mounting portion is set large . 前記第２載置部が前記グリーンタイヤのベルト層の埋設位置に設定された請求項１に記載のグリーンタイヤの保管装置。 The green tire storage device according to claim 1 , wherein the second placement portion is set at a buried position of a belt layer of the green tire. 前記第１載置部の傾斜面の傾斜角度が、横置き状態で前記載置台に載置する直前のグリータイヤの下側面においてそのグリーンタイヤの半径の８５％の位置と９５％の位置とを結んだ線分の傾斜角度以上に設定された請求項２に記載のグリーンタイヤの保管装置。 The angle of inclination of the inclined surface of the first mounting portion is 85% and 95% of the radius of the green tire on the lower surface of the green tire immediately before being mounted on the mounting table in the horizontal state. The green tire storage device according to claim 2 , wherein the storage device is set to be equal to or greater than an inclination angle of the connected line segments. 前記第２載置部の傾斜面の傾斜角度と、前記線分の傾斜角度との差が５°以上３０°以下に設定されている請求項３に記載のグリーンタイヤの保管装置。 The green tire storage device according to claim 3 , wherein a difference between an inclination angle of the inclined surface of the second placement portion and an inclination angle of the line segment is set to 5 ° or more and 30 ° or less.
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