JP5748968B2

JP5748968B2 - Tire manufacturing apparatus and tire manufacturing method

Info

Publication number: JP5748968B2
Application number: JP2010166266A
Authority: JP
Inventors: 昌宏藤澤
Original assignee: Bridgestone Corp
Current assignee: Bridgestone Corp
Priority date: 2010-07-23
Filing date: 2010-07-23
Publication date: 2015-07-15
Anticipated expiration: 2030-07-23
Also published as: JP2012025047A

Description

本発明は、タイヤ構成部材からなる筒状体に一対のビード部材を配置し、ビード部材間の筒状体を半径方向外側に拡張させて生タイヤを成形するタイヤ製造装置とタイヤ製造方法に関する。 The present invention relates to a tire manufacturing apparatus and a tire manufacturing method in which a pair of bead members are arranged on a cylindrical body made of a tire constituent member, and a cylindrical body between the bead members is expanded radially outward to form a raw tire.

空気入りタイヤ等の各種のタイヤは、一般に、タイヤ構成部材からなる筒状体やビード部材等により生タイヤを成形し、加硫モールド内で生タイヤを加硫して製造される。この生タイヤの成形時には、従来、成形ドラムに筒状体を挟んで一対のビード部材を配置し、各ビード部材を筒状体の内周側から固定した後に、ビード部材間の筒状体を拡張させて生タイヤを成形する装置が使用されている（特許文献１参照）。 Various types of tires such as pneumatic tires are generally manufactured by forming a raw tire from a cylindrical body or a bead member made of a tire constituent member, and vulcanizing the raw tire in a vulcanization mold. At the time of molding this green tire, conventionally, a pair of bead members are arranged with a cylindrical body sandwiched between molding drums, and after fixing each bead member from the inner peripheral side of the cylindrical body, the cylindrical body between the bead members is An apparatus for forming a raw tire by expanding is used (see Patent Document 1).

図５は、従来のビード部材の固定手段の例を示す概略構成図であり、成形ドラム（図示せず）の軸線方向外側から見た側面図を模式的に示している。また、図５では、固定手段１００と、成形ドラムに配置した筒状体Ｔ及びビード部材Ｂを、上下方向の中央線よりも下側の部分を省略して示している。更に、図５には、左右方向の中央線を挟んで、右側と左側に異なる状態の固定手段１００を示す。 FIG. 5 is a schematic configuration diagram showing an example of a conventional means for fixing a bead member, and schematically shows a side view of the forming drum (not shown) viewed from the outside in the axial direction. Further, in FIG. 5, the fixing means 100, the cylindrical body T and the bead member B arranged on the forming drum are shown by omitting portions below the center line in the vertical direction. Further, FIG. 5 shows the fixing means 100 in different states on the right side and the left side across the center line in the left-right direction.

従来の固定手段１００は、図示のように、周方向に沿って配置された複数の固定部材１０１と、複数の固定部材１０１を半径方向に変位させる変位手段１０２とを備えている。変位手段１０２は、複数の固定部材１０１を、互いに接触した縮小位置（図５の右側に示す位置）から半径方向外側に変位させて、隙間Ｓを開けて並べられた拡大位置（図５の左側に示す位置）に配置する。固定手段１００は、拡大位置で、複数の固定部材１０１をビード部材Ｂが位置する筒状体Ｔの内周に押し付け、複数の固定部材１０１により、筒状体Ｔを挟んでビード部材Ｂを固定する。筒状体Ｔは、ビード部材Ｂと固定部材１０１に挟まれて固定されるとともに、複数の固定部材１０１の外周に設けたシール部材（図示せず）により内周面が密封される。その後、筒状体Ｔは、一対のビード部材Ｂ間の内部に空気等の気体が充填されて、気体の圧力で、一対のビード部材Ｂ間の部分が膨張して半径方向外側に拡張する。 As shown in the drawing, the conventional fixing means 100 includes a plurality of fixing members 101 arranged along the circumferential direction, and a displacement means 102 that displaces the plurality of fixing members 101 in the radial direction. The displacing means 102 displaces the plurality of fixing members 101 from the contracted positions (positions shown on the right side of FIG. 5) in contact with each other outward in the radial direction, and expands positions (left side of FIG. 5) arranged with gaps S therebetween. Position). The fixing means 100 presses the plurality of fixing members 101 against the inner periphery of the cylindrical body T where the bead member B is located at the enlarged position, and fixes the bead members B with the plurality of fixing members 101 sandwiching the cylindrical body T therebetween. To do. The cylindrical body T is fixed by being sandwiched between the bead member B and the fixing member 101, and the inner peripheral surface is sealed by a sealing member (not shown) provided on the outer periphery of the plurality of fixing members 101. Thereafter, the cylindrical body T is filled with a gas such as air inside the pair of bead members B, and the portion between the pair of bead members B expands and expands radially outward by the pressure of the gas.

ところで、ビード部材Ｂの固定時には、複数の固定部材１０１間に、それぞれ隙間Ｓが発生する。これに伴い、筒状体Ｔは、固定部材１０１が押し付けられる部分（押付部）と隙間Ｓの部分との間で、内周に作用する圧力に差が生じる。その結果、筒状体Ｔは、固定中や拡張時に、固定部材１０１の押付部が凹状に変形して、内周に、凹部と凹部間の凸部からなる凹凸が発生することがある。このような凹凸が発生すると、その程度によっては、生タイヤの加硫時に凹部にゴムが流れ込んで、加硫後のタイヤの表面に空気が包み込まれる虞がある。従って、従来の固定手段１００では、タイヤのビード部における欠陥の発生をより抑制する観点から、更なる改良が求められている。 By the way, when the bead member B is fixed, gaps S are generated between the plurality of fixing members 101. Accordingly, the tubular body T has a difference in pressure acting on the inner periphery between the portion where the fixing member 101 is pressed (pressing portion) and the portion of the gap S. As a result, in the cylindrical body T, the pressing portion of the fixing member 101 may be deformed into a concave shape during fixing or expansion, and unevenness including a concave portion and a convex portion between the concave portions may be generated on the inner periphery. When such irregularities occur, depending on the degree, rubber flows into the recesses during vulcanization of the raw tire, and there is a possibility that air will be wrapped around the surface of the tire after vulcanization. Therefore, in the conventional fixing means 100, the further improvement is calculated | required from a viewpoint which suppresses generation | occurrence | production of the defect in the bead part of a tire more.

特開２００９−１８５２６号公報JP 2009-18526 A

本発明は、これら従来の問題に鑑みなされたもので、その目的は、一対のビード部材を固定して生タイヤを成形するときに、タイヤ構成部材からなる筒状体の内周に生じる凹凸を軽減させて、タイヤのビード部における欠陥の発生を抑制することである。 The present invention has been made in view of these conventional problems. The purpose of the present invention is to prevent irregularities generated on the inner periphery of a cylindrical body made of a tire constituent member when a raw tire is molded by fixing a pair of bead members. This is to reduce the occurrence of defects in the tire bead.

本発明は、タイヤ構成部材からなる筒状体を挟んで一対のビード部材が配置される成形ドラムと、前記筒状体の内周側から前記ビード部材を固定する固定手段とを備え、該固定手段により固定した前記一対のビード部材間の前記筒状体を半径方向外側に拡張させて生タイヤを成形するタイヤ製造装置であって、前記固定手段が、周方向に隙間なく環状に組み合わされて前記筒状体の内周に押し付けられ、前記筒状体を挟んで前記ビード部材を固定する複数の固定部材、及び、該複数の固定部材を半径方向に拡縮変位させて、周方向に隙間なく配置して環状に組み合わせて前記ビード部材を固定する拡大位置と、前記環状の組み合わせを解除して周方向に隣り合う前記固定部材を半径方向にずらして前記筒状体の内側に格納する縮小位置とに配置する変位手段を有し、前記変位手段が、ドラム軸線方向において前記固定部材を挟んで配置され、前記固定部材を案内部により案内して半径方向に拡縮変位させる第１の変位機構と第２の変位機構を有し、前記複数の固定部材が、前記変位手段の第１の変位機構が変位させる固定部材、及び、前記変位手段の第２の変位機構が変位させる固定部材からなることを特徴とするタイヤ製造装置である。
また、本発明は、タイヤ構成部材からなる筒状体を成形ドラムに配置する工程と、前記筒状体の外周に一対のビード部材を配置する工程を有し、前記一対のビード部材間の前記筒状体を半径方向外側に拡張させて生タイヤを成形するタイヤ製造方法であって、前記筒状体の内側に格納した複数の固定部材を半径方向に拡大変位させる工程と、該拡大変位させた複数の固定部材を周方向に隙間なく配置して環状に組み合わせる工程と、該環状の複数の固定部材を前記筒状体の内周に押し付ける工程と、前記環状の複数の固定部材により前記筒状体を挟んで前記ビード部材を固定する工程と、前記固定部材により固定した前記一対のビード部材間の前記筒状体を半径方向外側に拡張させる工程と、を有し、前記複数の固定部材を半径方向に拡大変位させる工程が、ドラム軸線方向において前記固定部材を挟んで配置され、前記固定部材を案内部により案内して半径方向に拡縮変位させる第１の変位機構と第２の変位機構を有する変位手段により、前記複数の固定部材を変位させる工程を有し、前記複数の固定部材が、前記変位手段の第１の変位機構が変位させる固定部材、及び、前記変位手段の第２の変位機構が変位させる固定部材からなることを特徴とするタイヤ製造方法である。
The present invention includes a forming drum in which a pair of bead members are disposed across a cylindrical body made of a tire constituent member, and a fixing means for fixing the bead member from the inner peripheral side of the cylindrical body, the fixing A tire manufacturing apparatus for forming a raw tire by expanding the cylindrical body between the pair of bead members fixed by means outward in the radial direction, wherein the fixing means is annularly combined without any gap in the circumferential direction. A plurality of fixing members pressed against the inner periphery of the cylindrical body and fixing the bead member across the cylindrical body, and the plurality of fixing members are expanded and contracted in the radial direction so that there is no gap in the circumferential direction. An enlarged position where the bead member is fixed by being arranged in an annular manner and a reduced position where the annular combination is released and the fixing members adjacent in the circumferential direction are radially displaced and stored inside the cylindrical body Arranged to Has a displacement means for the displacement means are arranged to sandwich the fixing member in the drum shaft line direction, the first displacement mechanism that a fixing member in the radial direction is guided by the guide unit Ru is scaled displacement and second The plurality of fixing members include a fixing member that is displaced by the first displacement mechanism of the displacement means and a fixing member that is displaced by the second displacement mechanism of the displacement means. This is a tire manufacturing apparatus .
Further, the present invention includes a step of arranging a cylindrical body made of a tire constituent member on a molding drum, and a step of arranging a pair of bead members on the outer periphery of the cylindrical body, and the step between the pair of bead members. A tire manufacturing method in which a cylindrical body is expanded radially outward to form a raw tire, wherein a plurality of fixing members stored inside the cylindrical body are expanded and displaced in a radial direction, and the expanded displacement is performed. A plurality of fixing members arranged in the circumferential direction without any gaps, a step of pressing the plurality of fixing members against the inner periphery of the cylindrical body, and the tube by the plurality of annular fixing members. A step of fixing the bead member with a body interposed therebetween, and a step of expanding the cylindrical body between the pair of bead members fixed by the fixing member outward in the radial direction, the plurality of fixing members Is expanded in the radial direction Step of is arranged to sandwich the fixing member in the drum axial direction, the displacement means having a first displacement mechanism that a fixing member is guided by the guide unit Ru is scaled radially displaced and second displacement mechanisms A step of displacing the plurality of fixing members, wherein the plurality of fixing members displaces a fixing member that is displaced by the first displacement mechanism of the displacement means and a second displacement mechanism of the displacement means. A tire manufacturing method comprising a fixing member.

本発明によれば、一対のビード部材を固定して生タイヤを成形するときに、タイヤ構成部材からなる筒状体の内周に生じる凹凸を軽減させて、タイヤのビード部における欠陥の発生を抑制することができる。 According to the present invention, when forming a raw tire by fixing a pair of bead members, the unevenness generated on the inner periphery of the cylindrical body made of the tire constituent members is reduced, and the occurrence of defects in the bead portion of the tire is reduced. Can be suppressed.

本実施形態のタイヤ製造装置の要部を示す断面図である。It is sectional drawing which shows the principal part of the tire manufacturing apparatus of this embodiment. 図１の成形ドラムの一部を拡大して示す断面図である。It is sectional drawing which expands and shows a part of molding drum of FIG. ビード部材の固定手段を抜き出した拡大図である。It is the enlarged view which extracted the fixing means of the bead member. ビード部材の固定手段をドラム軸線方向から見た概略構成図である。It is the schematic block diagram which looked at the fixing means of the bead member from the drum axial direction. 従来のビード部材の固定手段の例を示す概略構成図である。It is a schematic block diagram which shows the example of the fixing means of the conventional bead member.

以下、本発明のタイヤ製造装置とタイヤ製造方法の一実施形態について、図面を参照して説明する。
本実施形態のタイヤ製造装置は、タイヤ構成部材が配置される成形ドラムと、一対のビード部材を固定する固定手段（ビード固定手段）とを備えている。タイヤ製造装置は、固定手段により一対のビード部材を固定して、成形ドラム上で生タイヤを成形（製造）する。 Hereinafter, an embodiment of a tire manufacturing apparatus and a tire manufacturing method of the present invention will be described with reference to the drawings.
The tire manufacturing apparatus of the present embodiment includes a forming drum on which a tire constituent member is disposed, and a fixing unit (bead fixing unit) that fixes a pair of bead members. A tire manufacturing apparatus fixes a pair of bead members by fixing means, and forms (manufactures) a raw tire on a forming drum.

図１は、本実施形態のタイヤ製造装置の要部を示す断面図であり、タイヤ製造装置１を、成形ドラム１０のドラム軸線を含む面で切断して示す。また、図１では、ドラム軸線の上側と下側に、それぞれビード部材Ｂを固定する前と、筒状体Ｔを拡張して生タイヤＧを成形する途中のタイヤ製造装置１を示す。図２は、図１の成形ドラム１０の一部を拡大して示す断面図であり、一方のビード部材Ｂの付近から成形ドラム１０の軸線方向（ドラム軸線方向）外側の部分を示す。
なお、成形ドラム１０は、ドラム中央面ＣＬを挟んで左右対称に構成されており、以下説明する各構成は、一部を除いて、ドラム中央面ＣＬの両側に対称に配置され、それぞれ同期して対称に作動する。 FIG. 1 is a cross-sectional view illustrating a main part of the tire manufacturing apparatus according to the present embodiment, in which the tire manufacturing apparatus 1 is cut along a plane including a drum axis of a forming drum 10. Further, FIG. 1 shows the tire manufacturing apparatus 1 before the bead member B is fixed to the upper side and the lower side of the drum axis, respectively, and in the middle of forming the raw tire G by expanding the tubular body T. FIG. 2 is an enlarged cross-sectional view showing a part of the forming drum 10 of FIG. 1, and shows a portion outside the axial direction (drum axial direction) of the forming drum 10 from the vicinity of one bead member B.
The forming drum 10 is configured to be symmetrical with respect to the drum center surface CL. The components described below are arranged symmetrically on both sides of the drum center surface CL except for a part thereof, and are synchronized with each other. Operate symmetrically.

タイヤ製造装置１は、図示のように、ドラム軸線が水平に配置された成形ドラム１０を備えている。成形ドラム１０は、生タイヤＧの成形時に、タイヤ構成部材を支持する支持体であり、外周に、タイヤ構成部材からなる筒状体Ｔと、筒状体Ｔを挟んで環状の一対のビード部材Ｂが配置され、それらを同芯状に保持する。また、成形ドラム１０は、駆動装置（図示せず）により支持され、駆動装置が備えるモータ等の駆動源と、その回転動力の伝達機構により、ドラム軸線回りに回転駆動され、所定の回転速度で回転して任意の回転角で停止する。 As shown in the figure, the tire manufacturing apparatus 1 includes a forming drum 10 in which a drum axis is disposed horizontally. The molding drum 10 is a support that supports the tire constituent member when the green tire G is molded, and a cylindrical body T made of the tire constituent member and a pair of annular bead members sandwiching the cylindrical body T on the outer periphery. B is placed and holds them concentrically. The forming drum 10 is supported by a driving device (not shown), and is rotationally driven around the drum axis line by a driving source such as a motor provided in the driving device and a transmission mechanism of the rotational power thereof, at a predetermined rotational speed. Rotate and stop at any rotation angle.

ここで、筒状体Ｔは、生タイヤＧの一部を構成する筒状（ここでは円筒状）の部材であり、１以上のタイヤ構成部材を順に重ね合わせる等して筒状に形成されて成形ドラム１０に配置される。この筒状体Ｔは、例えば、インナーライナとカーカスプライを重ねたカーカスバンドや、カーカスバンドの側部にサイドウォールゴムを配置した筒状部材からなる。ビード部材Ｂは、少なくともビードコアＢ１を有し、タイヤのビード部に配置される環状の部材であり、筒状体Ｔの両側部の所定位置に一対配置されて、筒状体Ｔの外周に装着される。ここでは、ビード部材Ｂは、ビードコアＢ１と、その外周から半径方向外側に延びるビードフィラＢ２により構成されている。ただし、ビード部材Ｂは、ビードコアＢ１のみにより構成し、又は、ビードコアＢ１にビードフィラＢ２以外の部材を設けて構成してもよい。 Here, the cylindrical body T is a cylindrical (here cylindrical) member that constitutes a part of the raw tire G, and is formed in a cylindrical shape by sequentially stacking one or more tire constituent members. Arranged on the forming drum 10. The tubular body T is made of, for example, a carcass band in which an inner liner and a carcass ply are stacked, or a tubular member in which a side wall rubber is disposed on the side of the carcass band. The bead member B has at least a bead core B1 and is an annular member disposed on the bead portion of the tire. The bead member B is disposed at a predetermined position on both sides of the tubular body T and is attached to the outer periphery of the tubular body T. Is done. Here, the bead member B includes a bead core B1 and a bead filler B2 extending radially outward from the outer periphery thereof. However, the bead member B may be configured only by the bead core B1, or may be configured by providing a member other than the bead filler B2 on the bead core B1.

成形ドラム１０は、円筒状の主軸１１と、主軸１１内の中空部に設けられたネジ軸１２と、主軸１１の外周をドラム軸線方向に移動する一対のスライダ１３と、ビード部材Ｂを固定する固定手段２０と、筒状体Ｔの折り返し手段６０とを備えている。この成形ドラム１０は、固定手段２０と折り返し手段６０を、ドラム中央面ＣＬを挟んで一対有し、固定手段２０のドラム軸線方向外側に折り返し手段６０を配置している。また、固定手段２０と折り返し手段６０は、円筒状のスライダ１３の外周に設けられて各スライダ１３と一体に移動する。 The forming drum 10 fixes a cylindrical main shaft 11, a screw shaft 12 provided in a hollow portion in the main shaft 11, a pair of sliders 13 that move around the outer periphery of the main shaft 11 in the drum axis direction, and a bead member B. The fixing means 20 and the folding means 60 of the cylindrical body T are provided. The forming drum 10 has a pair of fixing means 20 and folding means 60 with the drum center surface CL interposed therebetween, and the folding means 60 is disposed outside the fixing means 20 in the drum axial direction. The fixing means 20 and the folding means 60 are provided on the outer periphery of the cylindrical slider 13 and move integrally with each slider 13.

ネジ軸１２は、駆動装置（図示せず）により、主軸１１とは独立に軸線回りの両方向に回転駆動されて、主軸１１と同芯状に回転する。また、ネジ軸１２は、ボールネジ機構を構成し、ドラム中央面ＣＬを挟んで、ネジ溝が逆向きの一対の雄ネジ部１２Ａが形成されている。各雄ネジ部１２Ａには、複数のボールを挟んで噛み合うナット１４が、主軸１１の中空部を移動可能に取り付けられている。各ナット１４の外周には、複数の連結ブロック１５が固定されている。各連結ブロック１５は、主軸１１の各スリット１６を貫通してスライダ１３の内周面に取り付けられ、ナット１４とスライダ１３とを連結する。一対のスライダ１３は、ネジ軸１２の回転によりナット１４と一体に移動し、主軸１１の外周面を互いに逆方向にスライドして、ドラム中央面ＣＬを中心に対称に接近及び離間する。 The screw shaft 12 is rotationally driven in both directions around the axis line independently of the main shaft 11 by a driving device (not shown), and rotates concentrically with the main shaft 11. Further, the screw shaft 12 constitutes a ball screw mechanism, and a pair of male screw portions 12A having opposite screw grooves are formed across the drum center surface CL. A nut 14 meshing with a plurality of balls is attached to each male screw portion 12A so as to be movable in the hollow portion of the main shaft 11. A plurality of connecting blocks 15 are fixed to the outer periphery of each nut 14. Each connecting block 15 passes through each slit 16 of the main shaft 11 and is attached to the inner peripheral surface of the slider 13 to connect the nut 14 and the slider 13. The pair of sliders 13 moves integrally with the nut 14 by the rotation of the screw shaft 12, slides on the outer peripheral surface of the main shaft 11 in opposite directions, and approaches and separates symmetrically about the drum center surface CL.

固定手段２０は、ビード部材Ｂを固定するための複数の固定部材３０と、固定部材３０が半径方向（ドラム半径方向）に変位可能に取り付けられた案内部２１と、複数の固定部材３０を半径方向に変位させる変位手段２２とを有する。固定手段２０は、変位手段２２により、複数の固定部材３０を、案内部２１により案内して半径方向に変位させ、後述するように、筒状体Ｔの内側の縮小位置から半径方向外側に変位させて、筒状体Ｔに押し付ける拡大位置に配置する。固定手段２０は、拡大位置の複数の固定部材３０により、筒状体Ｔの内周側からビード部材Ｂを固定する。その際、固定部材３０は、外周に形成された凹溝状の固定部３１（図２参照）で、筒状体Ｔを挟んでビード部材Ｂを内周側から固定する。また、固定手段２０は、ビード部材Ｂを成形ドラム１０及び筒状体Ｔに固定するとともに、筒状体Ｔをビード部材Ｂとの間に挟み込んで、ビード部材Ｂと固定部材３０の間の筒状体Ｔを固定する。 The fixing means 20 includes a plurality of fixing members 30 for fixing the bead member B, a guide portion 21 to which the fixing members 30 are attached so as to be displaceable in the radial direction (drum radial direction), and a radius of the plurality of fixing members 30. Displacement means 22 for displacing in the direction. The fixing means 20 is displaced by the displacing means 22 in the radial direction by guiding the plurality of fixing members 30 by the guide portion 21, and is displaced radially outward from the reduced position inside the cylindrical body T as will be described later. And arranged at an enlarged position to be pressed against the cylindrical body T. The fixing means 20 fixes the bead member B from the inner peripheral side of the cylindrical body T by a plurality of fixing members 30 at the enlarged position. At that time, the fixing member 30 fixes the bead member B from the inner peripheral side with the tubular body T sandwiched between the fixing portions 31 (see FIG. 2) having a concave groove shape formed on the outer periphery. The fixing means 20 fixes the bead member B to the forming drum 10 and the cylindrical body T, and sandwiches the cylindrical body T between the bead member B so that the cylinder between the bead member B and the fixing member 30 is fixed. The body T is fixed.

固定手段２０は、複数の固定部材３０の外周に設けられたシール部材３２を有する。シール部材３２は、一端が案内部２１に気密状に固定され、ビード部材Ｂの固定時に、固定部材３０と筒状体Ｔとの間に挟み込まれて、筒状体Ｔの内周面側を密封する。その状態で、タイヤ製造装置１は、ネジ軸１２を回転させて一対のスライダ１３と固定手段２０を接近させ、同時に、加圧気体（例えば空気）の供給源（図示せず）から筒状体Ｔ内に加圧気体を導入する。これにより、タイヤ製造装置１は、固定手段２０とともに一対のビード部材Ｂを接近させつつ、固定手段２０により固定した一対のビード部材Ｂ間の筒状体Ｔを半径方向外側に拡張させて生タイヤＧを成形する。筒状体Ｔは、内部に気体が充填されて、一対のビード部材Ｂ間の部分が気体の圧力で膨張する。その後、タイヤ製造装置１は、折り返し手段６０により、筒状体Ｔの側部ＴＡ（ビード部材Ｂよりもドラム軸線方向外側の範囲）をビード部材Ｂの周りに折り返す。 The fixing means 20 has a seal member 32 provided on the outer periphery of the plurality of fixing members 30. One end of the sealing member 32 is fixed in an airtight manner to the guide portion 21, and is sandwiched between the fixing member 30 and the cylindrical body T when the bead member B is fixed. Seal. In this state, the tire manufacturing apparatus 1 rotates the screw shaft 12 to bring the pair of sliders 13 and the fixing means 20 closer to each other, and at the same time, a cylindrical body from a pressurized gas (for example, air) supply source (not shown). A pressurized gas is introduced into T. Thereby, the tire manufacturing apparatus 1 expands the cylindrical body T between the pair of bead members B fixed by the fixing unit 20 to the outside in the radial direction while bringing the pair of bead members B close together with the fixing unit 20. G is formed. The cylindrical body T is filled with a gas, and a portion between the pair of bead members B expands with a gas pressure. Thereafter, the tire manufacturing apparatus 1 folds the side portion TA of the cylindrical body T (a range outside the bead member B in the drum axis direction) around the bead member B by the folding means 60.

折り返し手段６０は、複数の折り返しアーム６１と、アーム先端に回転自在に取り付けられた折り返しローラ６２と、弾性体からなる環状部材６３と、複数の折り返しアーム６１を支持して一体に移動する移動体７０とを有する。環状部材６３は、複数の折り返しアーム６１の周囲に配置され、複数の折り返しアーム６１を束ねつつ、各折り返しアーム６１にドラム半径方向内側の力を加える。 The folding means 60 includes a plurality of folding arms 61, a folding roller 62 rotatably attached to the tip of the arm, an annular member 63 made of an elastic body, and a movable body that supports the plurality of folding arms 61 and moves integrally. 70. The annular member 63 is arranged around the plurality of folding arms 61 and applies a force in the drum radial direction to each folding arm 61 while bundling the plurality of folding arms 61.

移動体７０（図２参照）は、スライダ１３に設けられた部材の外周を移動する環状の第１、第２可動壁７１、７２と、両可動壁７１、７２の外周を繋ぐ円筒部材７３とを有する。移動体７０は、可動壁７１、７２、円筒部材７３、及び、内周側の部材に囲まれた内部空間が、環状の固定壁１７を挟んで２つの圧力室に区画される。折り返し手段６０は、移動体７０内の一方の圧力室に供給源（図示せず）から加圧媒体を供給し、かつ、他方の圧力室から加圧媒体を排出して、可動壁７１、７２及び移動体７０をドラム軸線方向に移動させる。 The moving body 70 (see FIG. 2) includes annular first and second movable walls 71 and 72 that move on the outer periphery of the member provided on the slider 13, and a cylindrical member 73 that connects the outer periphery of both the movable walls 71 and 72. Have In the moving body 70, an internal space surrounded by the movable walls 71 and 72, the cylindrical member 73, and the inner peripheral member is partitioned into two pressure chambers with the annular fixed wall 17 interposed therebetween. The folding means 60 supplies a pressure medium from a supply source (not shown) to one pressure chamber in the moving body 70 and discharges the pressure medium from the other pressure chamber to move the movable walls 71, 72. The moving body 70 is moved in the drum axis direction.

複数の折り返しアーム６１は、成形ドラム１０の周方向（ドラム周方向）に等間隔に配置されて、移動体７０と一体にドラム軸線方向の内側と外側に移動する。各折り返しアーム６１は、ロッド部６１Ａと、その一端部の基端部６１ＢとによりＬ字状に形成されている。また、折り返しアーム６１は、基端部６１Ｂが、第２可動壁７２のドラム軸線方向外側面に回転自在に取り付けられ、ロッド部６１Ａが、ドラム軸線方向に沿って配置される。複数の折り返しアーム６１は、筒状体Ｔの側部ＴＡを折り返すときに、ドラム軸線方向内側に移動して、折り返しローラ６２を、固定部材３０のローラ受け３３内（縮径位置）からドラム半径方向外側に移動させる。続いて、折り返しローラ６２を、ビード部材Ｂと拡張させた筒状体Ｔの側面に沿って所定の拡径位置（図１参照）まで移動させる。 The plurality of folding arms 61 are arranged at equal intervals in the circumferential direction (drum circumferential direction) of the forming drum 10 and move inward and outward in the drum axial direction integrally with the moving body 70. Each folding arm 61 is formed in an L shape by a rod portion 61A and a base end portion 61B at one end thereof. The folding arm 61 has a base end portion 61B rotatably attached to the outer surface in the drum axial direction of the second movable wall 72, and a rod portion 61A disposed along the drum axial direction. When the side portion TA of the cylindrical body T is folded back, the plurality of folding arms 61 move inward in the drum axial direction, and the folding roller 62 is moved from the inside (reduced diameter position) of the roller receiver 33 of the fixing member 30 to the drum radius. Move outward in the direction. Subsequently, the folding roller 62 is moved to a predetermined diameter-enlarged position (see FIG. 1) along the side surface of the expanded cylindrical body T with the bead member B.

これに伴い、複数の折り返しアーム６１は、円筒状に閉じた状態から、基端部６１Ｂを支点に同期して放射状に拡がる。また、複数の折り返しローラ６２は、筒状体Ｔの側部ＴＡを、ビード部材Ｂを支点に半径方向外側に折り返し、側部ＴＡをビード部材Ｂと筒状体Ｔの側面に押し付けて貼り付ける。側部ＴＡの折り返しが終了すると、折り返し手段６０は、折り返しアーム６１をドラム軸線方向外側に移動させて、環状部材６３からの力により、折り返しアーム６１を次第に閉じて元の状態に復帰させる。同時に、折り返しローラ６２も、拡径位置から縮径位置に復帰する。 Accordingly, the plurality of folding arms 61 expand radially from the closed state in a cylindrical shape in synchronization with the base end portion 61B as a fulcrum. Further, the plurality of folding rollers 62 fold the side portion TA of the cylindrical body T outwardly in the radial direction with the bead member B as a fulcrum, and press the side portion TA against the bead member B and the side surface of the cylindrical body T for pasting. . When the folding of the side portion TA is completed, the folding means 60 moves the folding arm 61 outward in the drum axis direction, and gradually closes the folding arm 61 by the force from the annular member 63 to return to the original state. At the same time, the folding roller 62 also returns from the enlarged diameter position to the reduced diameter position.

次に、ビード部材Ｂの固定手段２０について、詳細に説明する。
図３は、図２に示すタイヤ製造装置１からビード部材Ｂの固定手段２０を抜き出した拡大図である。また、図４は、ビード部材Ｂの固定手段２０をドラム軸線方向から見た概略構成図であり、固定手段２０の一部を図３の矢印Ｘ方向から見て示している。
なお、図３は、図４のＹ−Ｙ線矢視図に相当する図であり、ビード部材Ｂを固定する固定部材３０の一部を二点鎖線で示している。また、図４では、上下の中央線よりも下側の固定手段２０を省略するとともに、左右の中央線を挟んだ左側にビード部材Ｂを固定する固定手段２０を、右側にビード部材Ｂを固定しない状態（待機中）の固定手段２０を示す。 Next, the fixing means 20 for the bead member B will be described in detail.
FIG. 3 is an enlarged view of the fixing means 20 for the bead member B extracted from the tire manufacturing apparatus 1 shown in FIG. 4 is a schematic configuration view of the fixing means 20 of the bead member B as viewed from the drum axis direction, and shows a part of the fixing means 20 as viewed from the direction of the arrow X in FIG.
3 is a view corresponding to the view taken along the line Y-Y in FIG. 4, and a part of the fixing member 30 that fixes the bead member B is indicated by a two-dot chain line. Further, in FIG. 4, the fixing means 20 below the upper and lower center lines is omitted, the fixing means 20 for fixing the bead member B on the left side of the left and right center lines, and the bead member B on the right side. The fixing means 20 in a non-operating state (standby) is shown.

複数の固定部材３０は、図示のように、周方向に分割された分割ピースからなり、変位手段２２により所定のパターンで半径方向に変位する。また、複数の固定部材３０は、上記した半径方向外側の拡大位置（図４の左側に示す位置）に変位することで、対向する分割面を隙間なく接触させた状態で、周方向に沿って順に配置されて環状に組み合わされる。このように、複数の固定部材３０は、拡大位置で、ドラム周方向に順に隙間なく配置されて環状をなすとともに、ビード部材Ｂを固定する外周の固定部３１が、隙間なく連続した円周面となる。複数の固定部材３０は、周方向（ドラム周方向）に隙間なく環状に組み合わされて、変位手段２２により、環状の状態で、ビード部材Ｂが位置する筒状体Ｔの内周に隙間なく押し付けられる。これに伴い、複数の固定部材３０は、固定部３１により、筒状体Ｔを間に挟んで、筒状体Ｔの外周に配置されたビード部材Ｂを固定する。 As shown in the figure, the plurality of fixing members 30 are composed of divided pieces that are divided in the circumferential direction, and are displaced in the radial direction in a predetermined pattern by the displacement means 22. Further, the plurality of fixing members 30 are displaced along the circumferential direction in a state in which the opposing divided surfaces are in contact with each other by being displaced to the enlargement position (position shown on the left side in FIG. 4) on the radially outer side as described above. Arranged in order and combined in an annular shape. As described above, the plurality of fixing members 30 are arranged in the drum circumferential direction without any gaps in the enlarged position in order to form an annular shape, and the outer circumferential fixing portion 31 for fixing the bead member B is continuous without gaps. It becomes. The plurality of fixing members 30 are annularly combined without any gap in the circumferential direction (drum circumferential direction), and pressed by the displacing means 22 to the inner circumference of the cylindrical body T where the bead member B is located without any gap. It is done. Accordingly, the plurality of fixing members 30 fix the bead members B arranged on the outer periphery of the cylindrical body T with the fixing portion 31 sandwiching the cylindrical body T therebetween.

複数の固定部材３０は、ビード部材Ｂを固定する前や固定を解除した後は、拡大位置（ビード部材Ｂを固定する固定位置）から、筒状体Ｔ内に設定された待機位置である縮小位置（ビード部材Ｂを固定しない非固定位置）に配置される。変位手段２２は、この縮小位置（図４の右側に示す位置）に複数の固定部材３０を配置するときに、周方向に隣り合う固定部材３０を、互いに重ならないように半径方向にずらして配置する。ここでは、変位手段２２は、縮小位置の固定部材３０を、周方向に沿って交互に半径方向の内側と外側にずらして配置する。従って、複数の固定部材３０は、縮小位置で半径方向内側に配置される内側固定部材３０Ａ、及び、縮小位置で半径方向外側に配置される外側固定部材３０Ｂからなり、内側固定部材３０Ａと外側固定部材３０Ｂが周方向に沿って交互に配置される。 The plurality of fixing members 30 is a standby position set in the cylindrical body T from an enlarged position (a fixing position for fixing the bead member B) before fixing the bead member B or after releasing the fixing. It is arranged at a position (an unfixed position where the bead member B is not fixed). When the plurality of fixing members 30 are arranged at the reduced position (the position shown on the right side in FIG. 4), the displacing means 22 is arranged by shifting the fixing members 30 adjacent in the circumferential direction in the radial direction so as not to overlap each other. To do. Here, the displacement means 22 arrange | positions the fixing member 30 of a reduction position by shifting to the inner side and the outer side of a radial direction alternately along the circumferential direction. Accordingly, the plurality of fixing members 30 include an inner fixing member 30A disposed radially inward at the contracted position and an outer fixing member 30B disposed radially outward at the contracted position. The members 30B are alternately arranged along the circumferential direction.

なお、図３には、周方向に隣接する内側固定部材３０Ａと外側固定部材３０Ｂを１つずつ示している。ただし、図３Ａでは、内側固定部材３０Ａと内側固定部材３０Ａに繋がる一部の構成を実線で、外側固定部材３０Ｂと外側固定部材３０Ｂに繋がる一部の構成を点線で示している。これに対し、図３Ｂでは、内側固定部材３０Ａと内側固定部材３０Ａに繋がる一部の構成を点線で、外側固定部材３０Ｂと外側固定部材３０Ｂに繋がる一部の構成を実線で示している。また、既に説明した図１と図２では、固定手段２０を簡略化し、固定部材３０として、１つの外側固定部材３０Ｂのみを示し、内側固定部材３０Ａは省略している。 In FIG. 3, one inner fixing member 30A and one outer fixing member 30B adjacent in the circumferential direction are shown. However, in FIG. 3A, a part of the structure connected to the inner fixing member 30A and the inner fixing member 30A is indicated by a solid line, and a part of the structure connected to the outer fixing member 30B and the outer fixing member 30B is indicated by a dotted line. On the other hand, in FIG. 3B, a part of the structure connected to the inner fixing member 30A and the inner fixing member 30A is indicated by a dotted line, and a part of the structure connected to the outer fixing member 30B and the outer fixing member 30B is indicated by a solid line. 1 and 2 described above, the fixing means 20 is simplified, and only one outer fixing member 30B is shown as the fixing member 30, and the inner fixing member 30A is omitted.

変位手段２２は、複数の内側固定部材３０Ａと外側固定部材３０Ｂを拡大位置と縮小位置との間で変位させて、拡大位置で固定部材３０を環状に配置し、縮小位置で、隣接する固定部材３０を半径方向の異なる位置に配置する。また、変位手段２２は、内側固定部材３０Ａを変位させる第１の変位機構４０と、外側固定部材３０Ｂを変位させる第２の変位機構５０とを有し、内側固定部材３０Ａと外側固定部材３０Ｂを独立して変位させる。変位機構４０、５０は、固定部材３０を挟んで配置され、固定部材３０に対して、第１の変位機構４０がドラム軸線方向外側に、第２の変位機構５０がドラム軸線方向内側に配置されている。 The displacing means 22 displaces the plurality of inner fixing members 30A and the outer fixing members 30B between the enlarged position and the reduced position, and arranges the fixing members 30 in an annular shape at the enlarged position, and adjacent fixing members at the reduced position. 30 are arranged at different positions in the radial direction. The displacement means 22 includes a first displacement mechanism 40 that displaces the inner fixing member 30A and a second displacement mechanism 50 that displaces the outer fixing member 30B. The inner fixing member 30A and the outer fixing member 30B are connected to each other. Displace independently. The displacement mechanisms 40 and 50 are disposed with the fixing member 30 interposed therebetween, and the first displacement mechanism 40 is disposed on the drum axial direction outer side and the second displacement mechanism 50 is disposed on the drum axial direction inner side with respect to the fixed member 30. ing.

第１の変位機構４０（図３Ａ参照）は、スライダ１３と外筒壁４１との間に形成された円筒状のシリンダ室４２を有し、シリンダ室４２が可動壁４３を挟んで２つの圧力室に区画される。第１の変位機構４０は、一方の圧力室に供給源（図示せず）から加圧媒体を供給し、他方の圧力室から加圧媒体を排出して、可動壁４３をドラム軸線方向に移動させる。また、第１の変位機構４０は、スライダ１３の外周上を移動する伝動部材４４を有する。伝動部材４４は、可動壁４３に固定された一端部からドラム軸線方向内側に向かって配置され、シリンダ室４２の固定壁４５を貫通して、他端部がシリンダ室４２外に位置する。また、伝動部材４４は、この他端部に、リンク４６の一端部が回転自在に取り付けられている。伝動部材４４は、可動壁４３と一体にドラム軸線方向に移動して、可動壁４３の移動の動力をリンク４６に伝動してリンク４６を作動させる。 The first displacement mechanism 40 (see FIG. 3A) has a cylindrical cylinder chamber 42 formed between the slider 13 and the outer cylinder wall 41, and the cylinder chamber 42 sandwiches the movable wall 43 with two pressures. Divided into rooms. The first displacement mechanism 40 supplies a pressure medium from a supply source (not shown) to one pressure chamber, discharges the pressure medium from the other pressure chamber, and moves the movable wall 43 in the drum axis direction. Let Further, the first displacement mechanism 40 has a transmission member 44 that moves on the outer periphery of the slider 13. The transmission member 44 is arranged from the one end fixed to the movable wall 43 toward the inner side in the drum axial direction, passes through the fixed wall 45 of the cylinder chamber 42, and the other end is located outside the cylinder chamber 42. The transmission member 44 has one end of a link 46 rotatably attached to the other end. The transmission member 44 moves integrally with the movable wall 43 in the drum axis direction, and transmits the power of movement of the movable wall 43 to the link 46 to operate the link 46.

リンク４６は、長板状をなし、伝動部材４４側の一端部からドラム軸線方向内側に向かって配置されている。リンク４６は、この一端部から傾斜して延び、他端部が、内側固定部材３０Ａの内周に設けられた連結部材３４Ａに回転自在に取り付けられている。第１の変位機構４０は、このリンク４６をドラム周方向に複数有し、伝動部材４４により、複数のリンク４６を連動して動かす。複数のリンク４６は、伝動部材４４がドラム軸線方向内側に移動すると、伝動部材４４から外側に放射状に開いて、連結部材３４Ａと内側固定部材３０Ａを半径方向外側に変位させる。また、複数のリンク４６は、伝動部材４４がドラム軸線方向外側に移動すると、次第に閉じて、連結部材３４Ａと内側固定部材３０Ａを半径方向内側に変位させる。第１の変位機構４０は、複数のリンク４６の状態を次第に変更することで、内側固定部材３０Ａを半径方向に変位させて各位置に配置する。 The link 46 has a long plate shape, and is arranged from the one end portion on the transmission member 44 side toward the inside in the drum axial direction. The link 46 is inclined and extended from the one end, and the other end is rotatably attached to a connecting member 34A provided on the inner periphery of the inner fixing member 30A. The first displacement mechanism 40 has a plurality of links 46 in the circumferential direction of the drum, and the transmission members 44 move the links 46 in conjunction with each other. When the transmission member 44 moves inward in the drum axis direction, the plurality of links 46 radially open from the transmission member 44 to displace the coupling member 34A and the inner fixing member 30A outward in the radial direction. Further, when the transmission member 44 moves outward in the drum axis direction, the plurality of links 46 are gradually closed to displace the connecting member 34A and the inner fixing member 30A inward in the radial direction. The first displacement mechanism 40 gradually changes the state of the plurality of links 46, thereby displacing the inner fixing member 30A in the radial direction and disposing it at each position.

第２の変位機構５０（図３Ｂ参照）は、スライダ１３と外筒壁５１との間に形成された円筒状のシリンダ室５２を有し、シリンダ室５２が可動壁５３を挟んで２つの圧力室に区画される。第２の変位機構５０は、一方の圧力室に供給源（図示せず）から加圧媒体を供給し、他方の圧力室から加圧媒体を排出して、可動壁５３をドラム軸線方向に移動させる。また、第２の変位機構５０は、スライダ１３の外周上を移動する伝動部材５４を有する。伝動部材５４は、可動壁５３に固定された一端部からドラム軸線方向外側に向かって配置され、シリンダ室５２の固定壁５５を貫通して、他端部がシリンダ室５２外に位置する。また、伝動部材５４は、連結部材３４とスライダ１３の間を通り、他端部が固定部材３０のドラム軸線方向外側に配置され、この他端部に、リンク５６の一端部が回転自在に取り付けられている。伝動部材５４は、可動壁５３と一体にドラム軸線方向に移動して、可動壁５３の移動の動力をリンク５６に伝動してリンク５６を作動させる。 The second displacement mechanism 50 (see FIG. 3B) has a cylindrical cylinder chamber 52 formed between the slider 13 and the outer cylinder wall 51, and the cylinder chamber 52 sandwiches the movable wall 53 with two pressures. Divided into rooms. The second displacement mechanism 50 supplies a pressure medium from a supply source (not shown) to one pressure chamber, discharges the pressure medium from the other pressure chamber, and moves the movable wall 53 in the drum axis direction. Let Further, the second displacement mechanism 50 has a transmission member 54 that moves on the outer periphery of the slider 13. The transmission member 54 is disposed from one end fixed to the movable wall 53 toward the outside in the drum axial direction, penetrates the fixed wall 55 of the cylinder chamber 52, and the other end is located outside the cylinder chamber 52. Further, the transmission member 54 passes between the connecting member 34 and the slider 13, the other end portion is disposed outside the fixing member 30 in the drum axial direction, and one end portion of the link 56 is rotatably attached to the other end portion. It has been. The transmission member 54 moves in the drum axial direction integrally with the movable wall 53, and transmits the power of movement of the movable wall 53 to the link 56 to operate the link 56.

リンク５６は、長板状をなし、伝動部材５４側の一端部からドラム軸線方向内側に向かって配置されている。リンク５６は、この一端部から傾斜して延び、他端部が、外側固定部材３０Ｂの内周に設けられた連結部材３４Ｂに回転自在に取り付けられている。第２の変位機構５０は、このリンク５６をドラム周方向に複数有し、伝動部材５４により、複数のリンク５６を連動して動かす。複数のリンク５６は、伝動部材５４がドラム軸線方向内側に移動すると、伝動部材５４から外側に放射状に開いて、連結部材３４Ｂと外側固定部材３０Ｂを半径方向外側に変位させる。また、複数のリンク５６は、伝動部材５４がドラム軸線方向外側に移動すると、次第に閉じて、連結部材３４Ｂと外側固定部材３０Ｂを半径方向内側に変位させる。 The link 56 has a long plate shape, and is arranged from one end portion on the transmission member 54 side toward the inside in the drum axial direction. The link 56 extends obliquely from the one end, and the other end is rotatably attached to a connecting member 34B provided on the inner periphery of the outer fixing member 30B. The second displacement mechanism 50 has a plurality of links 56 in the drum circumferential direction, and the transmission members 54 move the links 56 in conjunction with each other. When the transmission member 54 moves inward in the drum axial direction, the plurality of links 56 radially open outward from the transmission member 54 and displace the connecting member 34B and the outer fixing member 30B outward in the radial direction. Further, when the transmission member 54 moves outward in the drum axial direction, the plurality of links 56 gradually close and displace the connecting member 34B and the outer fixing member 30B inward in the radial direction.

第２の変位機構５０は、複数のリンク５６の状態を次第に変更することで、外側固定部材３０Ｂを半径方向に変位させて各位置に配置する。その際、第２の変位機構５０は、外側固定部材３０Ｂを、第１の変位機構４０が内側固定部材３０Ａを変位させる距離よりも短い距離を変位させる。内側固定部材３０Ａと外側固定部材３０Ｂの変位距離は、それぞれ縮小位置から拡大位置まで変位するのに要する距離が設定される。 The second displacement mechanism 50 gradually changes the state of the plurality of links 56, thereby displacing the outer fixing member 30B in the radial direction and disposing it at each position. At that time, the second displacement mechanism 50 displaces the outer fixing member 30B by a distance shorter than the distance by which the first displacement mechanism 40 displaces the inner fixing member 30A. As the displacement distance between the inner fixing member 30A and the outer fixing member 30B, a distance required for displacement from the reduced position to the enlarged position is set.

ここで、外側固定部材３０Ｂ（図４参照）は、半径方向の内側から外側に向かって次第に周方向に広がる形状に形成されている。一方、内側固定部材３０Ａは、半径方向の内側から外側に向かって次第に周方向に狭まる形状に形成され、半径方向外側端の角部に面取りが施されている。内側固定部材３０Ａは、縮小位置から拡大位置へ変位するときに、変位手段２２により、外側固定部材３０Ｂの間に半径方向内側から挿入される。ここでは、内側固定部材３０Ａと外側固定部材３０Ｂは、ドラム軸線方向から見て反転した台形形状に形成され、縮小位置で全体に亘り半径方向にずらして配置されて、互いに接触しないようになっている。また、外側固定部材３０Ｂは、内側固定部材３０Ａよりも周方向に大きく形成され、縮小位置で、内側固定部材３０Ａよりも半径方向外側に配置される。 Here, the outer fixing member 30B (see FIG. 4) is formed in a shape that gradually expands in the circumferential direction from the inner side to the outer side in the radial direction. On the other hand, the inner fixing member 30A is formed in a shape that gradually narrows in the circumferential direction from the inner side in the radial direction to the outer side, and the corner portion of the outer end in the radial direction is chamfered. When the inner fixing member 30A is displaced from the reduced position to the enlarged position, the inner fixing member 30A is inserted between the outer fixing members 30B from the radially inner side by the displacing means 22. Here, the inner fixing member 30 </ b> A and the outer fixing member 30 </ b> B are formed in a trapezoidal shape that is inverted when viewed from the drum axis direction, and are arranged so as to be shifted in the radial direction at the contraction position so that they do not contact each other. Yes. Further, the outer fixing member 30B is formed larger in the circumferential direction than the inner fixing member 30A, and is disposed on the radially outer side than the inner fixing member 30A in the contracted position.

変位手段２２は、複数の固定部材３０を縮小位置から拡大位置へ同時に変位させ、外側固定部材３０Ｂを拡大位置で停止させた後に、内側固定部材３０Ａを外側固定部材３０Ｂ間に挿入して拡大位置で停止させる。或いは、変位手段２２は、両固定部材３０Ａ、３０Ｂの変位に時間差を設け、外側固定部材３０Ｂを先行させて変位させた後に、内側固定部材３０Ａを変位させて外側固定部材３０Ｂ間に配置する。また、変位手段２２は、複数の固定部材３０を拡大位置から縮小位置へ変位させるときには、内側固定部材３０Ａを変位させた後に、外側固定部材３０Ｂの変位を開始して、両固定部材３０Ａ、３０Ｂを縮小位置に配置する。 The displacing means 22 simultaneously displaces the plurality of fixing members 30 from the reduced position to the enlarged position, stops the outer fixing member 30B at the enlarged position, and then inserts the inner fixing member 30A between the outer fixing members 30B to enlarge the position. Stop at. Alternatively, the displacing means 22 provides a time difference in the displacement of both the fixing members 30A and 30B, displaces the outer fixing member 30B in advance, and then displaces the inner fixing member 30A and arranges it between the outer fixing members 30B. Further, when displacing the plurality of fixing members 30 from the enlarged position to the reduced position, the displacing means 22 starts the displacement of the outer fixing member 30B after displacing the inner fixing member 30A, and both fixing members 30A, 30B. Is placed in the reduced position.

固定手段２０は、ビード部材Ｂを固定するときには、変位手段２２により、複数の固定部材３０を、縮小位置から拡大（拡径）変位させて拡大位置に配置し、複数の固定部材３０を環状に組み合わせて互いに接触させる。固定手段２０は、この環状の複数の固定部材３０を筒状体Ｔの内周に押し付けて、ビード部材Ｂを固定する。また、固定手段２０は、複数の固定部材３０を、拡大位置から縮小（縮径）変位させて筒状体Ｔの内周から離し、固定部材３０の環状の組み合わせとビード部材Ｂの固定を解除する。その後、固定手段２０は、複数の固定部材３０を、筒状体Ｔ内の各待機位置まで変位させて、筒状体Ｔの半径方向内側に格納する。このように、変位手段２２は、複数の固定部材３０を半径方向に拡縮変位させて、複数の固定部材３０を、環状に組み合わせてビード部材Ｂを固定する拡大位置と、環状の組み合わせを解除して筒状体Ｔの内側に格納する縮小位置とに配置する。 When fixing the bead member B, the fixing means 20 displaces the plurality of fixing members 30 from the contracted position by enlarging (expanding diameter) by the displacing means 22 and disposing the plurality of fixing members 30 in an annular shape. Combine and touch each other. The fixing means 20 presses the plurality of annular fixing members 30 against the inner periphery of the cylindrical body T to fix the bead member B. Also, the fixing means 20 displaces the plurality of fixing members 30 from the enlarged position by reducing (reducing diameter) and separating them from the inner periphery of the cylindrical body T, and releases the fixing of the annular combination of the fixing members 30 and the bead member B. To do. Thereafter, the fixing means 20 displaces the plurality of fixing members 30 to the respective standby positions in the cylindrical body T and stores them inside the cylindrical body T in the radial direction. In this way, the displacing means 22 displaces the plurality of fixing members 30 in the radial direction, releases the combination of the plurality of fixing members 30 in an annular shape and the annular position for fixing the bead member B and the annular combination. And disposed at the reduced position to be stored inside the cylindrical body T.

次に、タイヤ製造装置１により、生タイヤＧを成形する手順や動作、及び、タイヤ製造装置１によるタイヤ製造方法について説明する。以下の手順や動作は、タイヤ製造装置１が備える制御装置（図示せず）により制御されて実行される。この制御装置は、例えばマイクロプロセッサ（ＭＰＵ）、各種プログラムを格納するＲＯＭ（Read Only Memory）、及びＭＰＵが直接アクセスするデータを一時的に格納するＲＡＭ（Random Access Memory）等を備えたコンピュータからなる。また、制御装置は、接続手段（図示せず）により装置各部が接続されており、接続手段を介して制御信号や各種データを送受信して装置各部を制御する。 Next, the procedure and operation | movement which shape | mold the raw tire G with the tire manufacturing apparatus 1, and the tire manufacturing method by the tire manufacturing apparatus 1 are demonstrated. The following procedures and operations are controlled and executed by a control device (not shown) included in the tire manufacturing apparatus 1. The control device includes, for example, a computer including a microprocessor (MPU), a ROM (Read Only Memory) that stores various programs, and a RAM (Random Access Memory) that temporarily stores data directly accessed by the MPU. The control device is connected to each part of the device by connection means (not shown), and controls each part of the device by transmitting and receiving control signals and various data via the connection means.

タイヤ製造装置１（図１参照）は、まず、成形ドラム１０にタイヤ構成部材からなる筒状体Ｔを配置し、筒状体Ｔの外周に一対のビード部材Ｂを配置する。次に、変位手段２２（図４参照）により、筒状体Ｔの内側に格納した複数の固定部材３０を半径方向に拡大変位させる。また、拡大変位させた複数の固定部材３０を周方向に順に隙間なく配置して環状に組み合わせ、環状の複数の固定部材３０を筒状体Ｔの内周に押し付ける。一対の固定手段２０は、この環状の複数の固定部材３０により、隙間のない状態で、筒状体Ｔを挟んで一対のビード部材Ｂを固定する。また、筒状体Ｔを、一対のビード部材Ｂの部分で密封する。 In the tire manufacturing apparatus 1 (see FIG. 1), first, a tubular body T made of a tire constituent member is disposed on the forming drum 10, and a pair of bead members B are disposed on the outer periphery of the tubular body T. Next, the plurality of fixing members 30 stored inside the cylindrical body T are expanded and displaced in the radial direction by the displacement means 22 (see FIG. 4). Further, the plurality of fixed members 30 that are enlarged and displaced are sequentially arranged in the circumferential direction without any gaps and combined in an annular shape, and the plurality of annular fixed members 30 are pressed against the inner periphery of the cylindrical body T. The pair of fixing means 20 fixes the pair of bead members B with the tubular body T sandwiched between the plurality of annular fixing members 30 with no gap. Further, the cylindrical body T is sealed with the pair of bead members B.

続いて、タイヤ製造装置１（図１参照）は、一対のスライダ１３と固定手段２０をドラム中央面ＣＬに接近させながら、一対のビード部材Ｂ間の筒状体Ｔ内に加圧気体を充填する。これにより、筒状体Ｔを膨張させて、固定部材３０により固定した一対のビード部材Ｂ間の筒状体Ｔを半径方向外側に拡張させ、筒状体Ｔを所定形状に成形する。次に、複数の折り返しアーム６１を、ドラム軸線方向内側に移動させて放射状に次第に拡げて、折り返しローラ６２により筒状体Ｔの側部ＴＡを折り返す。折り返しローラ６２は、固定部材３０のローラ受け３３から、筒状体Ｔの側部ＴＡとともにドラム半径方向外側に移動し、側部ＴＡを折り返しながらビード部材Ｂと筒状体Ｔの側面に押し付ける。側部ＴＡは、固定部材３０側の基端から先端まで、ビード部材Ｂと筒状体Ｔに貼り付けられる。 Subsequently, the tire manufacturing apparatus 1 (see FIG. 1) fills the cylindrical body T between the pair of bead members B with the pressurized gas while bringing the pair of sliders 13 and the fixing means 20 close to the drum center surface CL. To do. Thereby, the cylindrical body T is expanded, the cylindrical body T between the pair of bead members B fixed by the fixing member 30 is expanded radially outward, and the cylindrical body T is formed into a predetermined shape. Next, the plurality of folding arms 61 are moved radially inward in the drum axis direction and gradually expanded radially, and the side TA of the cylindrical body T is folded by the folding rollers 62. The folding roller 62 moves from the roller receiver 33 of the fixing member 30 to the outside in the drum radial direction together with the side portion TA of the cylindrical body T, and presses against the bead member B and the side surface of the cylindrical body T while folding the side portion TA. The side portion TA is attached to the bead member B and the cylindrical body T from the proximal end to the distal end on the fixing member 30 side.

その後、タイヤ製造装置１は、折り返しローラ６２をローラ受け３３に復帰させ、拡張させた筒状体Ｔに、ベルトやトレッド等の他のタイヤ構成部材を組み付ける。このように、タイヤ製造装置１は、一対のビード部材Ｂ間の筒状体Ｔを半径方向外側に拡張させて生タイヤＧを成形する。次に、変位手段２２（図４参照）により、環状の複数の固定部材３０を半径方向内側に縮小変位させて、固定部材３０の環状の組み合わせを解除する。また、複数の固定部材３０を縮小変位させつつ、周方向に隣り合う固定部材３０（３０Ａ、３０Ｂ）を半径方向にずらして配置し、複数の固定部材３０を筒状体Ｔの内側に格納する。これにより、生タイヤＧは、ビード部材Ｂの固定が解除され、搬送装置（図示せず）により成形ドラム１０から取り外される。この生タイヤＧを加硫成型して、空気入りタイヤ等の各種のタイヤを製造する。 Thereafter, the tire manufacturing apparatus 1 returns the folding roller 62 to the roller receiver 33 and assembles another tire constituent member such as a belt or a tread to the expanded tubular body T. Thus, the tire manufacturing apparatus 1 forms the raw tire G by expanding the cylindrical body T between the pair of bead members B radially outward. Next, the plurality of annular fixing members 30 are reduced and displaced radially inward by the displacement means 22 (see FIG. 4), and the annular combination of the fixing members 30 is released. Further, the fixing members 30 (30A, 30B) adjacent to each other in the circumferential direction are shifted in the radial direction while the plurality of fixing members 30 are reduced and displaced, and the plurality of fixing members 30 are stored inside the cylindrical body T. . Thereby, the fixation of the bead member B is released from the green tire G, and the green tire G is removed from the molding drum 10 by a conveying device (not shown). The raw tire G is vulcanized and molded to produce various tires such as pneumatic tires.

以上説明したように、本実施形態のタイヤ製造装置１とタイヤ製造方法では、複数の固定部材３０を、周方向に隙間なく配置して環状に組み合わせた状態で筒状体Ｔの内周に押し付け、固定部材３０により筒状体Ｔを挟んでビード部材Ｂを固定する。このように、複数の固定部材３０を筒状体Ｔに隙間なく押し付けてビード部材Ｂを固定できるため、筒状体Ｔの内周に隙間なく均等に圧力を作用させることができる。そのため、一対のビード部材Ｂを固定して生タイヤＧを成形するときに、固定位置の筒状体Ｔに圧力差による凹凸が生じ難くなり、筒状体Ｔの内周に生じる凹凸を軽減させることができる。これに伴い、加硫後のタイヤの表面に空気が包み込まれる現象が発生するのも防止でき、タイヤのビード部における欠陥の発生を抑制して、タイヤの品質をより向上させることもできる。 As described above, in the tire manufacturing apparatus 1 and the tire manufacturing method of the present embodiment, the plurality of fixing members 30 are pressed against the inner periphery of the cylindrical body T in a state where the fixing members 30 are arranged in the circumferential direction and are combined in a ring shape. The bead member B is fixed with the cylindrical member T sandwiched between the fixing members 30. Thus, since the bead member B can be fixed by pressing the plurality of fixing members 30 against the tubular body T without a gap, pressure can be applied uniformly to the inner periphery of the tubular body T without a gap. Therefore, when the green tire G is formed by fixing the pair of bead members B, unevenness due to the pressure difference is less likely to occur in the tubular body T at the fixed position, and the unevenness generated on the inner periphery of the tubular body T is reduced. be able to. Along with this, it is possible to prevent a phenomenon in which air is encapsulated in the surface of the tire after vulcanization, and it is possible to suppress the generation of defects in the bead portion of the tire and to further improve the quality of the tire.

また、複数の固定部材３０を、縮小変位により環状の組み合わせを解除して筒状体Ｔの内側に格納できるため、生タイヤＧの成形工程を円滑に進行させることができる。これにより、筒状体Ｔの成形ドラム１０への配置、ビード部材Ｂの固定と固定の解除、及び、生タイヤＧの成形ドラム１０からの取り外しを、円滑かつ容易に行うこともできる。 In addition, since the plurality of fixing members 30 can be stored inside the cylindrical body T by releasing the annular combination by reduction displacement, the green tire G forming process can be smoothly advanced. Thereby, arrangement | positioning to the shaping | molding drum 10 of the cylindrical body T, fixation of the bead member B, cancellation | release of fixation, and removal from the shaping | molding drum 10 of the raw tire G can also be performed smoothly and easily.

複数の固定部材３０を縮小位置に配置するときには、周方向に隣り合う固定部材３０を半径方向にずらして配置するため、固定部材３０同士を接触又は干渉させずに縮小変位させて筒状体Ｔの内側に格納できる。その際、複数の固定部材３０は、例えば、半径方向の内側、中間、外側の３箇所にずらして配置し、或いは、４つ以上の半径方向位置に配置してもよい。 When the plurality of fixing members 30 are arranged at the contracted position, the fixing members 30 adjacent to each other in the circumferential direction are arranged so as to be shifted in the radial direction, so that the fixing members 30 are contracted and displaced without contacting or interfering with each other. Can be stored inside. At this time, the plurality of fixing members 30 may be arranged, for example, shifted in three locations in the radial direction inside, in the middle, and outside, or may be arranged in four or more radial positions.

ただし、複数の固定部材３０は、周方向に沿って交互に半径方向の内側と外側にずらして配置するのが好ましい。このようにすることで、複数の固定部材３０の変位と配置の仕方を単純にでき、変位手段２２が複雑になるのも抑制できる。また、変位手段２２を、内側固定部材３０Ａを変位させる第１の変位機構４０と、外側固定部材３０Ｂを変位させる第２の変位機構５０とにより構成するときには、内側固定部材３０Ａと外側固定部材３０Ｂを独立に変位させることができる。これにより、内側固定部材３０Ａと外側固定部材３０Ｂを、それぞれのタイミングや条件で適宜変位させることができる。更に、外側固定部材３０Ｂは、半径方向外側に向かって次第に周方向に広がる形状に、内側固定部材３０Ａは、半径方向外側に向かって次第に周方向に狭まる形状に形成するのが好ましい。この内側固定部材３０Ａを拡大位置へ変位させて、外側固定部材３０Ｂ間に半径方向内側から挿入することで、複数の固定部材３０を、環状の形状に円滑に配置できる。同時に、複数の固定部材３０を、隙間なく正確に組み合わせることもできる。 However, it is preferable that the plurality of fixing members 30 are alternately shifted inward and outward in the radial direction along the circumferential direction. By doing in this way, the way of displacement and arrangement of the plurality of fixing members 30 can be simplified, and the displacement means 22 can also be prevented from becoming complicated. Further, when the displacing means 22 includes the first displacement mechanism 40 that displaces the inner fixing member 30A and the second displacement mechanism 50 that displaces the outer fixing member 30B, the inner fixing member 30A and the outer fixing member 30B. Can be displaced independently. Accordingly, the inner fixing member 30A and the outer fixing member 30B can be appropriately displaced at the respective timings and conditions. Further, the outer fixing member 30B is preferably formed in a shape that gradually expands in the circumferential direction toward the outer side in the radial direction, and the inner fixing member 30A is formed in a shape that gradually decreases in the circumferential direction toward the outer side in the radial direction. By displacing the inner fixing member 30A to the enlarged position and inserting it between the outer fixing members 30B from the inner side in the radial direction, the plurality of fixing members 30 can be smoothly arranged in an annular shape. At the same time, the plurality of fixing members 30 can be accurately combined without gaps.

なお、本実施形態では、気体を充填させて筒状体Ｔを拡張させたが、本発明は、他の仕方で一対のビード部材Ｂ間の筒状体Ｔを拡張させるときにも適用できる。例えば、筒状体Ｔは、半径方向に移動する複数のコア体を成形ドラム１０に設けて、半径方向外側に移動する複数のコア体により拡張させてもよく、膨張するブラダにより拡張させてもよい。 In the present embodiment, the cylindrical body T is expanded by filling with gas, but the present invention can also be applied when the cylindrical body T between the pair of bead members B is expanded in other ways. For example, the cylindrical body T may be provided with a plurality of core bodies that move in the radial direction on the forming drum 10 and may be expanded by a plurality of core bodies that move radially outward, or may be expanded by an expanding bladder. Good.

１・・・タイヤ製造装置、１０・・・成形ドラム、１１・・・主軸、１２・・・ネジ軸、１２Ａ・・・雄ネジ部、１３・・・スライダ、１４・・・ナット、１５・・・連結ブロック、１６・・・スリット、１７・・・固定壁、２０・・・固定手段、２１・・・案内部、２２・・・変位手段、３０・・・固定部材、３０Ａ・・・内側固定部材、３０Ｂ・・・外側固定部材、３１・・・固定部、３２・・・シール部材、３３・・・ローラ受け、３４・・・連結部材、４０・・・第１の変位機構、４１・・・外筒壁、４２・・・シリンダ室、４３・・・可動壁、４４・・・伝動部材、４５・・・固定壁、４６・・・リンク、５０・・・第２の変位機構、５１・・・外筒壁、５２・・・シリンダ室、５３・・・可動壁、５４・・・伝動部材、５５・・・固定壁、５６・・・リンク、６０・・・折り返し手段、６１・・・折り返しアーム、６１Ａ・・・ロッド部、６１Ｂ・・・基端部、６２・・・折り返しローラ、６３・・・環状部材、７０・・・移動体、７１、７２・・・可動壁、７３・・・円筒部材、Ｂ・・・ビード部材、Ｂ１・・・ビードコア、Ｂ２・・・ビードフィラ、ＣＬ・・・ドラム中央面、Ｇ・・・生タイヤ、Ｔ・・・筒状体、ＴＡ・・・側部。 DESCRIPTION OF SYMBOLS 1 ... Tire manufacturing apparatus, 10 ... Molding drum, 11 ... Main shaft, 12 ... Screw shaft, 12A ... Male screw part, 13 ... Slider, 14 ... Nut, 15 ..Connection block, 16 ... slit, 17 ... fixed wall, 20 ... fixing means, 21 ... guide portion, 22 ... displacement means, 30 ... fixing member, 30A ... Inner fixing member, 30B ... outer fixing member, 31 ... fixing portion, 32 ... seal member, 33 ... roller receiver, 34 ... coupling member, 40 ... first displacement mechanism, 41 ... outer cylinder wall, 42 ... cylinder chamber, 43 ... movable wall, 44 ... transmission member, 45 ... fixed wall, 46 ... link, 50 ... second displacement Mechanism: 51 ... outer cylinder wall, 52 ... cylinder chamber, 53 ... movable wall, 54 ... transmission member, 55 ... Fixed wall, 56 ... link, 60 ... folding means, 61 ... folding arm, 61A ... rod portion, 61B ... base end, 62 ... folding roller, 63 ... annular 70, movable member, 71, 72 ... movable wall, 73 ... cylindrical member, B ... bead member, B1 ... bead core, B2 ... bead filler, CL ... center of drum Surface, G ... green tire, T ... cylindrical body, TA ... side part.

Claims

タイヤ構成部材からなる筒状体を挟んで一対のビード部材が配置される成形ドラムと、前記筒状体の内周側から前記ビード部材を固定する固定手段とを備え、該固定手段により固定した前記一対のビード部材間の前記筒状体を半径方向外側に拡張させて生タイヤを成形するタイヤ製造装置であって、
前記固定手段が、周方向に隙間なく環状に組み合わされて前記筒状体の内周に押し付けられ、前記筒状体を挟んで前記ビード部材を固定する複数の固定部材、及び、該複数の固定部材を半径方向に拡縮変位させて、周方向に隙間なく配置して環状に組み合わせて前記ビード部材を固定する拡大位置と、前記環状の組み合わせを解除して周方向に隣り合う前記固定部材を半径方向にずらして前記筒状体の内側に格納する縮小位置とに配置する変位手段を有し、
前記変位手段が、ドラム軸線方向において前記固定部材を挟んで配置され、前記固定部材を案内部により案内して半径方向に拡縮変位させる第１の変位機構と第２の変位機構を有し、
前記複数の固定部材が、前記変位手段の第１の変位機構が変位させる固定部材、及び、前記変位手段の第２の変位機構が変位させる固定部材からなることを特徴とするタイヤ製造装置。 A molding drum in which a pair of bead members are disposed across a cylindrical body made of a tire constituent member, and a fixing means for fixing the bead member from the inner peripheral side of the cylindrical body are fixed by the fixing means. A tire manufacturing apparatus for forming a raw tire by expanding the cylindrical body between the pair of bead members radially outward,
A plurality of fixing members for fixing the bead member across the cylindrical body, the fixing means being annularly combined with no gap in the circumferential direction and pressed against the inner periphery of the cylindrical body; The member is expanded and contracted in the radial direction, arranged in the circumferential direction without any gaps and combined in an annular shape to fix the bead member, and the fixed member adjacent in the circumferential direction is released by releasing the annular combination. Displacement means arranged at a reduced position to be stored inside the cylindrical body shifted in the direction ,
Said displacement means being arranged to sandwich said stationary member in the drum axial direction, having a first displacement mechanism that a fixing member is guided by the guide unit Ru is scaled radially displaced and the second displacement mechanism,
The tire manufacturing apparatus, wherein the plurality of fixing members include a fixing member that is displaced by a first displacement mechanism of the displacement means, and a fixing member that is displaced by a second displacement mechanism of the displacement means.

請求項１に記載されたタイヤ製造装置において、
前記変位手段が、前記縮小位置の複数の固定部材を、周方向に沿って交互に半径方向の内側と外側にずらして配置し、
前記複数の固定部材が、前記縮小位置で半径方向内側に配置される内側固定部材、及び、前記縮小位置で半径方向外側に配置される外側固定部材からなることを特徴とするタイヤ製造装置。 In the tire manufacturing apparatus according to claim 1 ,
The displacing means arranges the plurality of fixing members at the reduced position by alternately shifting inward and outward in the radial direction along the circumferential direction,
The tire manufacturing apparatus, wherein the plurality of fixing members include an inner fixing member arranged radially inward at the reduced position and an outer fixing member arranged radially outward in the reduced position.

請求項２に記載されたタイヤ製造装置において、
前記変位手段の第１の変位機構が、前記内側固定部材を変位させ、
前記変位手段の第２の変位機構が、前記外側固定部材を変位させることを特徴とするタイヤ製造装置。 In the tire manufacturing apparatus according to claim 2 ,
A first displacement mechanism of the displacement means displaces the inner fixing member;
The tire manufacturing apparatus, wherein the second displacement mechanism of the displacement means displaces the outer fixing member.

請求項２又は３に記載されたタイヤ製造装置において、
前記外側固定部材が、半径方向外側に向かって次第に周方向に広がる形状に形成され、
前記内側固定部材が、半径方向外側に向かって次第に周方向に狭まる形状に形成され、
前記拡大位置へ変位するときに、前記外側固定部材間に半径方向内側から挿入されることを特徴とするタイヤ製造装置。 In the tire manufacturing apparatus according to claim 2 or 3 ,
The outer fixing member is formed in a shape gradually spreading in the circumferential direction toward the radially outer side,
The inner fixing member is formed in a shape that gradually narrows in the circumferential direction toward the radially outer side,
The tire manufacturing apparatus is inserted between the outer fixing members from the inner side in the radial direction when displaced to the enlarged position.

タイヤ構成部材からなる筒状体を成形ドラムに配置する工程と、前記筒状体の外周に一対のビード部材を配置する工程を有し、前記一対のビード部材間の前記筒状体を半径方向外側に拡張させて生タイヤを成形するタイヤ製造方法であって、
前記筒状体の内側に格納した複数の固定部材を半径方向に拡大変位させる工程と、
該拡大変位させた複数の固定部材を周方向に隙間なく配置して環状に組み合わせる工程と、
該環状の複数の固定部材を前記筒状体の内周に押し付ける工程と、
前記環状の複数の固定部材により前記筒状体を挟んで前記ビード部材を固定する工程と、
前記固定部材により固定した前記一対のビード部材間の前記筒状体を半径方向外側に拡張させる工程と、を有し、
前記複数の固定部材を半径方向に拡大変位させる工程が、ドラム軸線方向において前記固定部材を挟んで配置され、前記固定部材を案内部により案内して半径方向に拡縮変位させる第１の変位機構と第２の変位機構を有する変位手段により、前記複数の固定部材を変位させる工程を有し、
前記複数の固定部材が、前記変位手段の第１の変位機構が変位させる固定部材、及び、前記変位手段の第２の変位機構が変位させる固定部材からなることを特徴とするタイヤ製造方法。 A step of disposing a cylindrical body made of a tire constituent member on a molding drum; and a step of disposing a pair of bead members on an outer periphery of the cylindrical body, and the radial direction of the cylindrical body between the pair of bead members. A tire manufacturing method in which a raw tire is formed by expanding outward,
A step of expanding and displacing a plurality of fixing members stored inside the cylindrical body in a radial direction;
A step of arranging the plurality of fixedly displaced fixed members without gaps in the circumferential direction and combining them annularly;
Pressing the plurality of annular fixing members against the inner periphery of the cylindrical body;
Fixing the bead member with the tubular body sandwiched between the plurality of annular fixing members;
Extending the cylindrical body between the pair of bead members fixed by the fixing member radially outward,
Wherein the plurality of fixing members the step of expanding radially displaced are arranged to sandwich the fixing member in the drum axial direction, the fixing member is guided by the guide unit Ru is scaled radially displaced first displacement mechanism And a step of displacing the plurality of fixing members by a displacement means having a second displacement mechanism,
The tire manufacturing method, wherein the plurality of fixing members include a fixing member that is displaced by a first displacement mechanism of the displacement means and a fixing member that is displaced by a second displacement mechanism of the displacement means.

請求項５に記載されたタイヤ製造方法において、
前記変位手段により、前記環状の複数の固定部材を半径方向に縮小変位させて、前記環状の組み合わせを解除する工程と、
前記変位手段により、前記複数の固定部材を縮小変位させつつ、周方向に隣り合う前記固定部材を半径方向にずらして配置し、前記複数の固定部材を前記筒状体の内側に格納する工程と、
を有することを特徴とするタイヤ製造方法。 In the tire manufacturing method according to claim 5 ,
Releasing the annular combination by reducing and displacing the plurality of annular fixing members in the radial direction by the displacement means;
A step of reducing and displacing the plurality of fixing members by the displacing means, shifting the fixing members adjacent in the circumferential direction in the radial direction, and storing the plurality of fixing members inside the cylindrical body; ,
A tire manufacturing method comprising: