JP2009178874A - Method and apparatus for producing unvulcanized tire - Google Patents

Method and apparatus for producing unvulcanized tire Download PDF

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JP2009178874A
JP2009178874A JP2008018054A JP2008018054A JP2009178874A JP 2009178874 A JP2009178874 A JP 2009178874A JP 2008018054 A JP2008018054 A JP 2008018054A JP 2008018054 A JP2008018054 A JP 2008018054A JP 2009178874 A JP2009178874 A JP 2009178874A
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tire
reinforcing member
bladder
unvulcanized
unvulcanized tire
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Toshiyuki Terazono
俊之 寺園
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Bridgestone Corp
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Bridgestone Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To surely stick a circular reinforcement member on the side of an inclined green tire by applying uniform pressurization force in core molding. <P>SOLUTION: The reinforcement member is transferred onto the side of a carcass ply stuck on a hard core [S101]. Next, a doughnut-shaped bladder with its both sides held by a pair of the rings of a reinforcement member sticking part is expanded in the peripheral direction [S102], and the reinforcement member is pushed to the carcass ply by the side of the expanded bladder [S103]. Next, air in the bladder is extracted [S104], a reinforcement member sticking device is moved so that the contracted bladder enters the inner diameter part of the reinforcement member [S105]. The vicinity of the inner diameter part of the reinforcement member is pressed by the bladder to be pressure-bonded to the carcass ply [S106]. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、未加硫タイヤの製造方法及び製造装置に関し、特に、ガス拡張可能な手段（例えば、ブラダー）を用いて補強部材をタイヤ表面に圧着する未加硫タイヤの製造方法及び製造装置に関する。   The present invention relates to a manufacturing method and a manufacturing apparatus for an unvulcanized tire, and more particularly to a manufacturing method and a manufacturing apparatus for an unvulcanized tire in which a reinforcing member is pressure-bonded to a tire surface using a gas expandable means (for example, a bladder). .

重荷重用空気入りラジアルタイヤ等では、ビード部の倒れ込み変形を少なくしてビード部の耐久性を上げるためにワイヤーチェーファー等の補強部材を用いてビード部を補強している（特許文献１参照）。   In a heavy-duty pneumatic radial tire or the like, the bead portion is reinforced using a reinforcing member such as a wire chafer in order to reduce the falling deformation of the bead portion and increase the durability of the bead portion (see Patent Document 1). .

図７は、補強部材を用いた重荷重用空気入りラジアルタイヤの幅方向断面図である。
この空気入りラジアルタイヤは、タイヤ幅方向両端にタイヤをリムに固定するためのビードワイヤー７２を有し、このビードワイヤー７２間にトロイダル状に延びたカーカスプライ７３がビードワイヤー７２の周りでタイヤの内側から外側に向けて巻き上げるように配置されている。このカーカスプライ７３のタイヤ半径方向外側（図中上側）にはトレッド部７５が設けられ、カーカスプライ７３とトレッド部７５の間には、カーカスプライ７３を補強するためのベルト層７４が配置されている。また、カーカスプライ７３の両側方にはサイドウォールゴム７６が貼り付けられ、全体が略環状に形成されている。 FIG. 7 is a cross-sectional view in the width direction of a heavy-duty pneumatic radial tire using a reinforcing member.
This pneumatic radial tire has bead wires 72 for fixing the tire to the rim at both ends in the tire width direction, and a carcass ply 73 extending in a toroidal shape between the bead wires 72 is provided around the bead wire 72 of the tire. It is arranged to roll up from the inside to the outside. A tread portion 75 is provided outside the carcass ply 73 in the tire radial direction (upper side in the drawing), and a belt layer 74 for reinforcing the carcass ply 73 is disposed between the carcass ply 73 and the tread portion 75. Yes. Further, sidewall rubber 76 is attached to both sides of the carcass ply 73, and the whole is formed in a substantially annular shape.

また、ビードワイヤー７２のタイヤ幅方向外側に配置されたカーカスプライ７３の更に同方向外側には、ビード部の補強部材としてワイヤーチェーファー７８が設けられている。
このワイヤーチェーファー７８は、形成する補強部材の形状に合わせて予め形成したシート状部材に例えば、平行に並べた未加硫ゴムで被覆した複数のワイヤーコードを粘着させて形成したものである。
このワイヤーチェーファー７８の形成方法は、線状部材を巻きつけて補強部材を形成する方法に比べて、部材の巻き付け回数が減少して作業時間が短縮すると共に、予め複数のタイヤ構成部材を一体化するため、張り付けた補強部材の下層部材からの剥離やずれ等も生じにくい。 Further, a wire chafer 78 is provided as a reinforcement member for the bead portion on the outer side in the same direction of the carcass ply 73 disposed on the outer side in the tire width direction of the bead wire 72.
The wire chafer 78 is formed by adhering, for example, a plurality of wire cords coated with unvulcanized rubber arranged in parallel to a sheet-like member formed in advance according to the shape of a reinforcing member to be formed.
The method of forming the wire chafer 78 reduces the number of times the member is wound and shortens the work time as compared with the method of winding a linear member to form a reinforcing member. Therefore, it is difficult to cause peeling or displacement of the attached reinforcing member from the lower layer member.

しかしながら、この方法は、タイヤ成形ドラムの外周面に貼り付けられたカーカスプライ７３等の上に補強部材を巻きつける場合にはよいが、略タイヤ形状とされた硬質のコア即ちハードコアの外面に補強部材を貼り付ける場合には、貼り付け対象となるビード部のカーカスプライ７３外側面がタイヤ回転軸に沿った断面でみたときに傾斜している（即ち、環状の補強部材を貼り付ける部分は円錐面形状である）ため、環状の補強部材をカーカスプライ７３外側面に確実に圧着することは困難である。
この環状補強部材（ワイヤーチェーファー７８）がカーカスプライ７３に確実に圧着されていないと、本来の目的であるビード部の耐久性を向上させることができず、また、タイヤのユニフォミティーが低下するという問題が生じる。 However, this method may be used when a reinforcing member is wound around the carcass ply 73 or the like attached to the outer peripheral surface of the tire molding drum, but the outer surface of the hard core having a substantially tire shape, that is, the hard core is reinforced. When a member is pasted, the outer surface of the carcass ply 73 of the bead portion to be pasted is inclined when viewed in a cross section along the tire rotation axis (that is, the portion where the annular reinforcing member is pasted is a cone). Therefore, it is difficult to reliably press the annular reinforcing member against the outer surface of the carcass ply 73.
If this annular reinforcing member (wire chafer 78) is not securely crimped to the carcass ply 73, the durability of the bead part, which is the original purpose, cannot be improved, and the uniformity of the tire is reduced. The problem arises.

その一つの解決策として、ハードコア上に成形されたカーカスプライなどのタイヤ構成部材に円環状の補強ゴムを転写した後、転写した補強ゴムを、それに対応して放射状に配置された絞り込みローラにより、補強部材をカーカスに押しつけながらカーカスの傾斜した表面に確実に圧着されるようにした圧着装置及び方法が既に提案されている。
この装置又は方法によれば傾斜したカーカス表面に対しても補強部材を圧着することができる。ただ、複数の絞り込みローラを用いるためローラに当接する部分とローラに当接しない部分間で押圧力に差が生じるため、円環状補強部材とコア（カーカスプライ）間の接着状態に差が出てしまい、その結果、全体としての均一性が低下するという問題がある。 As one of the solutions, after transferring the annular reinforcing rubber to the tire constituent member such as a carcass ply formed on the hard core, the transferred reinforcing rubber is squeezed by the squeezing rollers arranged radially correspondingly, There has already been proposed a crimping apparatus and a method that ensure that the reinforcing member is pressed against the inclined surface of the carcass while pressing the reinforcing member against the carcass.
According to this apparatus or method, the reinforcing member can be pressed against the inclined carcass surface. However, since a plurality of squeezing rollers are used, there is a difference in the pressing force between the portion that contacts the roller and the portion that does not contact the roller, so there is a difference in the adhesion state between the annular reinforcing member and the core (carcass ply). As a result, there is a problem that uniformity as a whole is lowered.

特開平５−１１２１０９号公報Japanese Patent Laid-Open No. 5-112109

本発明は上記従来の問題を解決するためになされたもので、その目的は、既に提案されている圧着装置及び圧着方法をさらに発展させてコア成型において、グリーンタイヤの側面に補強部材を一様な押圧力で確実に貼り付けることである。   The present invention has been made in order to solve the above-described conventional problems, and the object thereof is to further develop the already proposed crimping apparatus and crimping method to uniformly provide a reinforcing member on the side surface of the green tire in core molding. It is to stick with a certain pressing force.

本発明は、略タイヤ形状の支持体に複数のタイヤ構成部材を貼り付けてグリーンタイヤを構成するタイヤの製造方法であって、ビード部を補強するための補強部材を支持体上のタイヤ構成部材の所定位置に取り付ける工程と、取り付けた補強部材をガス拡張可能な手段で押圧してタイヤ構成部材に圧着する工程と、を備えたことを特徴とする。
また、本発明は、略タイヤ形状の支持体に複数のタイヤ構成部材を貼り付けてグリーンタイヤを構成する未加硫タイヤの製造装置であって、支持体に貼り付けられたタイヤ構成部材上に補強部材を取り付ける補強部材取付手段と、取り付けた補強部材をガス圧で圧着するガス拡張可能な手段と、を有することを特徴とする。
ここで、支持体とは、トロイダル上に膨出変形した成型ドラムや、成型ドラム上に配置された生ケース、生ケース上にベルト、プライなどのタイヤ構成部材などが貼り付けられた成型途中体や、製品タイヤの内面形状に対応する外面形状を有する剛体コアなどのことをいう。 The present invention relates to a tire manufacturing method in which a plurality of tire constituent members are attached to a substantially tire-shaped support body to constitute a green tire, and the reinforcing member for reinforcing a bead portion is a tire constituent member on the support body. And a step of pressing the attached reinforcing member with a means capable of gas expansion and press-bonding the reinforcing member to the tire constituent member.
Further, the present invention is an apparatus for manufacturing an unvulcanized tire in which a plurality of tire constituent members are attached to a substantially tire-shaped support body to constitute a green tire, on the tire constituent member attached to the support body Reinforcing member attaching means for attaching the reinforcing member, and gas expandable means for crimping the attached reinforcing member with gas pressure.
Here, the support is a molding drum bulging and deformed on a toroid, a raw case placed on the molding drum, or a tire intermediate member such as a belt or a ply attached to the raw case. It also refers to a rigid core having an outer surface shape corresponding to the inner surface shape of the product tire.

本発明によれば、コア成型において、グリーンタイヤの側面に補強部材を一定の押圧力で確実に貼り付けることができ、製品タイヤの強化及びユニフォミティーを向上させることができる。   According to the present invention, in core molding, the reinforcing member can be reliably attached to the side surface of the green tire with a constant pressing force, and the reinforcement and uniformity of the product tire can be improved.

以下、本発明の実施形態に係る未加硫タイヤ製造装置及び製造方法について、添付した図面を参照して説明する。
図１は、本実施形態に係る未加硫タイヤ製造装置を構成するコア支持装置と補強部材転写装置の斜視図である。
本実施形態に係る未加硫タイヤ製造装置１０は、概略的にはハードコアを支持するコア支持装置１１と、ハードコアの外面に貼り付けられたカーカスプライの側面に補強部材を取り付ける補強部材取付手段として、ここでは転写により補強部材を取り付ける補強部材転写装置２４とを有している。 Hereinafter, an unvulcanized tire manufacturing apparatus and manufacturing method according to an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a perspective view of a core support device and a reinforcing member transfer device constituting the unvulcanized tire manufacturing apparatus according to the present embodiment.
The unvulcanized tire manufacturing apparatus 10 according to the present embodiment schematically includes a core support device 11 that supports a hard core, and a reinforcing member attaching unit that attaches a reinforcing member to a side surface of a carcass ply attached to the outer surface of the hard core. Here, a reinforcing member transfer device 24 for attaching a reinforcing member by transfer is provided.

コア支持装置１１は、コア支持台１６と、コア支持台１６の一側面から直角に突出しコア支持台１６に内蔵された駆動機構で回転駆動されるコア支持軸１８と、コア支持軸１８の端部に取り付けられたトロイダル状の支持体であるハードコア１２とから成っている。なお、図示の状態では、ハードコア１２の外面には、既にタイヤ構成部材である図示しないインナーライナーやビードコア、ビードフィラー、その他の補強体と、カーカスプライ１４とが貼り付けられている。   The core support device 11 includes a core support base 16, a core support shaft 18 that protrudes at a right angle from one side surface of the core support base 16 and is rotationally driven by a drive mechanism built in the core support base 16, and an end of the core support shaft 18. It consists of a hard core 12 which is a toroidal support attached to the part. In the state shown in the figure, an inner liner, a bead core, a bead filler, and other reinforcing bodies (not shown) that are already tire constituent members and a carcass ply 14 are attached to the outer surface of the hard core 12.

補強部材転写装置２４は、ベース２８と、ベース２８の上面に設置した昇降装置３０と、昇降装置３０により昇降自在に支持された補強部材転写部３２と、補強部材転写部３２を昇降装置３０内で昇降駆動するための駆動機構３１とから成っている。床面には上記補強部材転写部３２を上記ハードコア１２に対して案内移動させるため、２条のレール２６がハードコア１２の軸に平行に敷設されており、ベース２８は図示しない駆動手段により上記レール２６上を走行する。   The reinforcing member transfer device 24 includes a base 28, an elevating device 30 installed on the upper surface of the base 28, a reinforcing member transfer unit 32 supported by the elevating device 30 so as to be movable up and down, and the reinforcing member transfer unit 32 in the elevating device 30. And a drive mechanism 31 for driving up and down. In order to guide and move the reinforcing member transfer portion 32 relative to the hard core 12 on the floor surface, two rails 26 are laid in parallel to the axis of the hard core 12, and the base 28 is driven by a driving means (not shown). Run on 26.

補強部材転写部３２は、駆動機構３１に直結したベース円板４０と、ベース円板４０の駆動機構３１側と反対側の円周面に固着された円筒部材３８と、円筒部材３８のベース円板４０と反対側の円周面に固着された円盤状の転写板３４とから成り、全体として略円柱状を成す補強部材転写部３２を構成している。   The reinforcing member transfer unit 32 includes a base disk 40 directly connected to the drive mechanism 31, a cylindrical member 38 fixed to a circumferential surface of the base disk 40 opposite to the drive mechanism 31, and a base circle of the cylindrical member 38. The reinforcing member transfer portion 32 is formed of a disk-shaped transfer plate 34 fixed to the opposite circumferential surface of the plate 40 and has a substantially cylindrical shape as a whole.

昇降装置３０のハードコア１２側の面には、補強部材転写部３２の昇降用ガイドとなるスリットが設けられており、補強部材転写部３２はこのスリットに沿って昇降し、コア支持装置１１に支持されたハードコア１２の中心軸と、補強部材転写部３２の中心軸（円盤の中心）との位置整合を行う。   A slit serving as a lifting guide for the reinforcing member transfer unit 32 is provided on the surface of the lifting device 30 on the hard core 12 side, and the reinforcing member transfer unit 32 moves up and down along the slit and is supported by the core support device 11. Position alignment between the center axis of the hard core 12 and the center axis (center of the disk) of the reinforcing member transfer portion 32 is performed.

図２は、補強部材転写部３２の正面図であり、図２Ａは補強部材転写部３２の転写板３４を示し、図２Ｂはその転写板３４に補強部材を貼り付けた状態を示す。
図２Ａに示すように、補強部材転写部３２の転写板３４表面には、その円板の中心から所定の位置離れたところから放射状に等角度で、かつ所定の長さと幅を有する複数のスリット３６が形成されている。 2 is a front view of the reinforcing member transfer portion 32, FIG. 2A shows the transfer plate 34 of the reinforcing member transfer portion 32, and FIG. 2B shows a state where the reinforcing member is attached to the transfer plate 34.
As shown in FIG. 2A, the surface of the transfer plate 34 of the reinforcing member transfer portion 32 has a plurality of slits that are radially equiangular and have a predetermined length and width from a predetermined position away from the center of the disk. 36 is formed.

円環状の補強部材６２は、円環状の未加硫ゴムシート５８に、未加硫ゴムでスチールコードを被覆したゴム被覆コード６０を、タイヤ径方向に対して傾斜させて周方向に所定のピッチで一周するように配置して形成されている。ゴム被覆コード６０を被覆した未加硫ゴムと、未加硫ゴムシート５８とは粘着性を有しているため、容易に互いに貼り付けることができる。この未加硫ゴムシート５８及びゴム被覆コード６０の貼り付けは従来周知又は公知の方法にて行う。なお、図２Ｂではゴム被覆コード６０は一部のみが示されている。また、補強部材６２の構成は、これに限られるものでなく、例えば短冊状のゴム被覆部材をつなぎ合わせたもの等でもよい。   The annular reinforcing member 62 has a predetermined pitch in the circumferential direction by inclining a rubber-coated cord 60 in which a steel cord is coated with an unvulcanized rubber on an annular unvulcanized rubber sheet 58 with respect to the tire radial direction. It is arranged and formed so as to make one round. Since the unvulcanized rubber coated with the rubber-coated cord 60 and the unvulcanized rubber sheet 58 have adhesiveness, they can be easily attached to each other. The unvulcanized rubber sheet 58 and the rubber-coated cord 60 are attached by a conventionally known or publicly known method. In FIG. 2B, only a part of the rubber-coated cord 60 is shown. Further, the configuration of the reinforcing member 62 is not limited to this, and for example, a configuration in which strip-shaped rubber covering members are joined together may be used.

また、未加硫ゴムシート５８は自身の粘着性により図２Ｂに示すように転写板３４に粘着されている。
補強部材転写部３２は、その内部に、例えば一端を枢着した板状体をピストンで旋回させる等によりスリット３６から出没自在に構成した図示しない複数の剥がし板を有しており、スリット３６から剥がし板を突き出させることで、転写板３４の表面に貼り付けられた補強部材６２を剥がし、ハードコア１２に転写する。 Further, the unvulcanized rubber sheet 58 is adhered to the transfer plate 34 as shown in FIG.
The reinforcing member transfer portion 32 has a plurality of peeling plates (not shown) configured so as to be able to protrude and retract from the slit 36 by, for example, turning a plate-like body pivoted at one end with a piston. By protruding the peeling plate, the reinforcing member 62 attached to the surface of the transfer plate 34 is peeled off and transferred to the hard core 12.

次に、本補強部材転写部３２によるハードコア１２側への補強部材６２の転写手順について説明する。
ハードコア１２に貼り付けられたカーカスプライ１４の外側面に補強部材６２を転写するときは、図２Ｂに示すように、平らな円板状の転写板３４の表面に補強部材６２を貼り付け、図１に示した補強部材転写部３２の高さを、昇降装置３０のスリットに沿って昇降させてハードコア１２の中心軸と補強部材転写部３２の中心軸とが整合するように調節する。なお、この動作順序は逆でもよい。 Next, the transfer procedure of the reinforcing member 62 to the hard core 12 side by the reinforcing member transfer unit 32 will be described.
When transferring the reinforcing member 62 to the outer surface of the carcass ply 14 affixed to the hardcore 12, as shown in FIG. 2B, the reinforcing member 62 is affixed to the surface of the flat disk-shaped transfer plate 34. The height of the reinforcing member transfer portion 32 shown in FIG. 1 is adjusted along the slit of the lifting device 30 so that the central axis of the hard core 12 and the central axis of the reinforcing member transfer portion 32 are aligned. This operation order may be reversed.

このように、補強部材６２を貼り付けた補強部材転写装置２４をハードコア１２に位置整合させた後、補強部材転写装置２４をハードコア１２のカーカスプライ１４の転写直近位置に移動させ、その位置で、図示しない上記剥がし板をスリット３６から突出させて補強部材６２を転写板３４から剥がしてカーカスプライ１４に転写する。   In this way, after aligning the reinforcing member transfer device 24 with the reinforcing member 62 attached to the hard core 12, the reinforcing member transfer device 24 is moved to the position closest to the transfer of the carcass ply 14 of the hard core 12, and at that position, The peeling plate (not shown) is protruded from the slit 36 and the reinforcing member 62 is peeled off from the transfer plate 34 and transferred to the carcass ply 14.

ハードコア１２に貼り付けたカーカスプライ１４の外側面は、補強部材転写部３２側からみたとき、その表面が凹状に傾斜しているため、剥がし板を作動したときに、平らな円環状の補強部材６２はその一部、つまりその外周部付近がカーカスプライ１４に部分的に粘着されて、カーカスプライ１４に転写される。
なお、以上の説明では、位置固定されたコア支持装置１１に対して補強部材転写装置２４が接離する構成としているが、両者の相対位置が変更可能であればよく、従って、その逆、即ち補強部材転写装置２４を位置固定し、これに対してコア支持装置１１が離隔接近する構成でもよい。 The outer surface of the carcass ply 14 affixed to the hardcore 12 is inclined in a concave shape when viewed from the reinforcing member transfer portion 32 side. Therefore, when the peeling plate is operated, a flat annular reinforcing member is formed. 62 is partially adhered to the carcass ply 14, that is, near the outer periphery thereof, and transferred to the carcass ply 14.
In the above description, the reinforcing member transfer device 24 is brought into contact with and separated from the core support device 11 whose position is fixed. However, it is only necessary that the relative positions of the two can be changed. The reinforcing member transfer device 24 may be fixed in position, and the core support device 11 may be spaced apart from the reinforcing member transfer device 24.

次に、以上のようにして部分的即ちその外周部付近のみがカーカスプライ１４に貼り付いた補強部材６２を、カーカスプライ１４に密着させる補強部材貼付装置について説明する。
図３は、本実施形態に係るコア支持装置１１と共に示した補強部材貼付装置１の概略断面図である。 Next, a description will be given of a reinforcing member affixing device that attaches the reinforcing member 62 that is partially or only adhered to the carcass ply 14 as described above to the carcass ply 14.
FIG. 3 is a schematic cross-sectional view of the reinforcing member affixing device 1 shown together with the core support device 11 according to the present embodiment.

補強部材貼付装置１は、図１に示した補強部材転写装置２４によりカーカスプライ１４に転写された補強部材６２を、ハードコア１２上に貼り付けられたカーカスプライ１４に押圧して貼り付けるための装置である。
補強部材貼付装置１は、ガス拡張可能な手段であるブラダー８と、上記レール２６上を走行可能に配置されたブラダー支持台２と、ブラダー支持台２の側面から直角に突出し、ブラダー８を支持するブラダー支持軸４と、ブラダー８を保持する一対の保持手段であるリング５ａ，５ｂとで構成される補強部材貼付部９とから成る。 The reinforcing member sticking device 1 is a device for pressing and sticking the reinforcing member 62 transferred to the carcass ply 14 by the reinforcing member transfer device 24 shown in FIG. 1 to the carcass ply 14 stuck on the hard core 12. It is.
The reinforcing member affixing device 1 supports the bladder 8 by protruding from the side surface of the bladder 8 as a gas expandable means, the bladder support 2 disposed so as to be able to run on the rail 26, and the bladder support 2. The reinforcing member attaching portion 9 is composed of a bladder support shaft 4 to be configured and a pair of rings 5 a and 5 b that are holding means for holding the bladder 8.

リング５ａ，５ｂは金属または合成樹脂などの適宜の材料で形成され、例えば筒状のゴム膜で形成したドーナツ状のブラダー８の幅方向両端面を固定することでブラダー８を保持している。また、ブラダー８の収縮状態においては、例えば図３に示すように、ブラダー８はリング５ａ、５ｂの径外に突出しないように構成されており、かつ、リング５ａ、５ｂの外径は補強部材６２の内径より小さく形成されている。
なお、ブラダー８はリング５ａ、５ｂに固定されているが固定手段は接着或いは機械的に固定する等任意である。 The rings 5a and 5b are formed of an appropriate material such as metal or synthetic resin, and hold the bladder 8 by fixing both end surfaces in the width direction of the donut-shaped bladder 8 formed of, for example, a cylindrical rubber film. In the contracted state of the bladder 8, for example, as shown in FIG. 3, the bladder 8 is configured not to protrude outside the diameters of the rings 5a and 5b, and the outer diameter of the rings 5a and 5b is a reinforcing member. The inner diameter is smaller than 62.
The bladder 8 is fixed to the rings 5a and 5b, but the fixing means is optional such as adhesion or mechanical fixing.

ブラダー支持台２の内部にはブラダー８へ給気するための図示しない給気手段が備えられており、給気手段からのエアはブラダー支持軸４の内部及び上記リング５ａ、５ｂに設けられた通気孔を介して、ブラダー８内に供給されてブラダー８を拡張させる。このブラダー８の拡張時には、ブラダー８はリング５ａ、５ｂの径外に膨出する（例えば、図４Ｂ参照）。
また、ブラダー支持台２には、コア支持装置１１に支持されたハードコア１２の中心軸とブラダー支持軸４の中心軸（円盤の中心）との位置整合を行うための、例えばブラダー支持軸４を昇降移動させる駆動手段などの図示しない位置整合手段が備えられている。 An air supply means (not shown) for supplying air to the bladder 8 is provided inside the bladder support base 2, and air from the air supply means is provided inside the bladder support shaft 4 and the rings 5 a and 5 b. The air is supplied into the bladder 8 through the vent hole to expand the bladder 8. When the bladder 8 is expanded, the bladder 8 bulges outside the diameter of the rings 5a and 5b (see, for example, FIG. 4B).
The bladder support base 2 includes, for example, a bladder support shaft 4 for aligning the center axis of the hard core 12 supported by the core support device 11 with the center axis of the bladder support shaft 4 (center of the disk). Position alignment means (not shown) such as drive means for moving up and down is provided.

ここで、コア支持装置１１は、図１に示したものと同一のものであり、図３の状態では、既に補強部材転写装置２４によってカーカスプライ１４の側面に補強部材６２の一部（外周部）で転写されている。   Here, the core support device 11 is the same as that shown in FIG. 1, and in the state of FIG. 3, a part of the reinforcing member 62 (outer peripheral portion) is already placed on the side surface of the carcass ply 14 by the reinforcing member transfer device 24. ).

図４及び図５は、本実施形態に係る補強部材６２の圧着手順に従った上記未加硫タイヤ成型装置１０の各状態を概略的に示す断面図であり、図４Ａは円環状補強部材６２の内径部を除く部分をカーカスプライ１４の凹状に湾曲した側面に貼り付け前の状態を、図４Ｂは貼り付け中の状態を、図４Ｃは貼り付け後の状態を、また、図５Ａは貼り付けた後の円環状補強部材６２の内径部をカーカスプライ１４に圧着させるために、ブラダーを補強部材６２の内径部に挿入した状態を、図５Ｂはブラダーを拡張して補強部材６２の内径部を貼り付けているときの状態を、図５Ｃは補強部材６２の貼付を完了した状態を示している。   4 and 5 are cross-sectional views schematically showing each state of the unvulcanized tire molding apparatus 10 according to the pressure bonding procedure of the reinforcing member 62 according to this embodiment, and FIG. 4A is an annular reinforcing member 62. 4B shows a state before being attached to the concavely curved side surface of the carcass ply 14, FIG. 4B shows a state during attachment, FIG. 4C shows a state after attachment, and FIG. FIG. 5B shows a state where the bladder is inserted into the inner diameter portion of the reinforcing member 62 in order to press the inner diameter portion of the annular reinforcing member 62 after being attached to the carcass ply 14. FIG. FIG. 5C shows a state where the sticking of the reinforcing member 62 is completed.

次に、上記図４Ａ〜４Ｃ及び図５Ａ〜５Ｃに示す本実施形態における補強部材６２の圧着手順と、図６に示すフロー図に従って補強部材６２を圧着する方法について説明する。   Next, a procedure for crimping the reinforcing member 62 according to the present embodiment shown in FIGS. 4A to 4C and FIGS. 5A to 5C and a method for crimping the reinforcing member 62 according to the flowchart shown in FIG. 6 will be described.

ハードコア１２には、既にカーカスプライ１４及び図示しないインナーライナーやビードコア、ビードフィラー、その他の補強体が貼り付けられており、補強部材６２がカーカスプライ１４の側面に転写されている（Ｓ１０１）。
ブラダー支持台２を図４Ａに示す位置に移動してハードコア１２へ接近させ、その位置において図示しない給気手段でブラダー８に給気して外周方向に拡張（インフレート）する（Ｓ１０２）。これにより、図４Ｂに示すように、ハードコア１２の側方（第１の方向）から拡張したブラダー８を補強部材６２に押し当て、ブラダー８の側面で補強部材６２をカーカスプライ１４に押し付けて圧着する（Ｓ１０３）。
この圧着段階では、拡張するブラダー８の側面を利用して円環状補強部材６２を側方から押圧するので、円環状補強部材６２の内径側（ハードコア１２の中心側）を凹状に傾斜したカーカスプライ１４部分に圧着することはできない。 The carcass ply 14 and an inner liner, a bead core, a bead filler, and other reinforcing bodies (not shown) are already attached to the hardcore 12, and the reinforcing member 62 is transferred to the side surface of the carcass ply 14 (S101).
The bladder support 2 is moved to the position shown in FIG. 4A so as to approach the hard core 12, and at that position, the bladder 8 is supplied with air supply means (not shown) and expanded (inflated) in the outer circumferential direction (S102). 4B, the bladder 8 expanded from the side (first direction) of the hard core 12 is pressed against the reinforcing member 62, and the reinforcing member 62 is pressed against the carcass ply 14 on the side surface of the bladder 8 to be crimped. (S103).
In this crimping stage, the annular reinforcing member 62 is pressed from the side by using the side surface of the expanding bladder 8, so the carcass ply in which the inner diameter side (center side of the hard core 12) of the annular reinforcing member 62 is inclined concavely. It cannot be crimped to 14 parts.

そこで、上記圧着工程が終了したら、次に、図４Ｃに示すように、ブラダー８を内部のエアを抜きながら後退させ、補強部材貼付装置１０を所定の位置に戻す（Ｓ１０４）。なお、このときブラダー８を後退させずにエアを抜いてもよい。
続いて、図５Ａに示すように、補強部材貼付装置１をハードコア１２側に移動させてブラダー８の位置をさらにハードコア１２の位置に近づけ、収縮させた状態のブラダー８を補強部材６２の内径部内へ進入させる（Ｓ１０５）。なお、進入位置はブラダー８を拡張したときに、ブラダー８のハードコア１２側のショルダー部分が補強部材６２に当接してこれを押圧できる位置とする。 Therefore, when the above crimping process is completed, as shown in FIG. 4C, the bladder 8 is then retracted while the internal air is being removed, and the reinforcing member affixing device 10 is returned to a predetermined position (S104). At this time, air may be extracted without retracting the bladder 8.
Subsequently, as shown in FIG. 5A, the reinforcing member attaching apparatus 1 is moved to the hard core 12 side so that the position of the bladder 8 is further brought closer to the position of the hard core 12, and the contracted bladder 8 is moved into the inner diameter portion of the reinforcing member 62. (S105). The entry position is a position where the shoulder portion of the bladder 8 on the hard core 12 side abuts against the reinforcing member 62 and can be pressed when the bladder 8 is expanded.

次に、図５Ｂに示すように、給気手段によりブラダー８を拡張し、最初の圧着工程では圧着できなかった補強部材６２の内径部近傍に、補強部材６２の略内側方向（第２の方向）からブラダー８のショルダー部を押し当て、カーカスプライ１４に圧着する（Ｓ１０６）。
補強部材６２の内径部をカーカスプライ１４に圧着したら、図５Ｃに示すようにエアを抜いてブラダー８を収縮させる（Ｓ１０７）。その後、収縮が完了したらブラダー支持台１６を待機位置に後退させる。
その後、ハードコア１２上で、ベルト、トレッドゴム等のタイヤ構成部材を順次貼り付けることで生タイヤが形成される。 Next, as shown in FIG. 5B, the bladder 8 is expanded by the air supply means, and in the vicinity of the inner diameter portion of the reinforcing member 62 that could not be crimped in the first crimping step, the substantially inner direction of the reinforcing member 62 (second direction). ) Is pressed against the shoulder portion of the bladder 8 and crimped to the carcass ply 14 (S106).
When the inner diameter portion of the reinforcing member 62 is pressure-bonded to the carcass ply 14, the air is removed and the bladder 8 is contracted as shown in FIG. 5C (S107). Thereafter, when the contraction is completed, the bladder support base 16 is retracted to the standby position.
Thereafter, tire constituent members such as a belt and a tread rubber are sequentially pasted on the hard core 12 to form a raw tire.

以上で説明したように、転写した補強部材６２を２段階に分けてブラダー８で押圧することで、補強部材６２の全面に対して圧力を均等に加えることができ、均一性の高い補強部材の貼り付けが可能である。
また、補強部材６２の押し付けに、拡張するブラダー８の側面及びショルダー面を利用するため、凹状に傾斜したカーカスプライ１４の外側面に対しても補強部材６２を均一且つ確実に圧着することができる。 As described above, the transferred reinforcing member 62 is pressed by the bladder 8 in two stages, so that pressure can be uniformly applied to the entire surface of the reinforcing member 62, and a highly uniform reinforcing member can be formed. Can be pasted.
Further, since the side surface and shoulder surface of the expanding bladder 8 are used for pressing the reinforcing member 62, the reinforcing member 62 can be uniformly and reliably crimped to the outer surface of the carcass ply 14 inclined in a concave shape. .

以上の説明では、補強部材転写装置２４と補強部材貼付装置１は、別の装置として説明したが、これらは必ずしも別の装置である必要はない。例えば、補強部材転写装置２４の補強部材転写部３２と補強部材貼付装置１の補強部材貼付部９を、それぞれ補強部材転写装置２４の駆動機構３１に対して直結できるように着脱自在に構成し、適宜交換してもよい。
また、更に、補強部材転写装置２４の補強部材転写部３２に補強部材貼付装置１を予め備えておくこともできる。例えば、補強部材転写部３２の転写板３４の前部に上記ドーナツ上のブラダーを備えたリング５ａ、５ｂから成る補強部材貼付部９を配置することで、補強部材６２の転写と貼り付けを同一装置で行うことができる。
このように、補強部材転写装置２４と補強部材貼付装置１を一体にした場合は、上記補強部材転写部３２と補強部材貼付部９とを交換可能にした場合よりもさらに作業効率を向上することができる。 In the above description, the reinforcing member transfer device 24 and the reinforcing member sticking device 1 have been described as separate devices, but they are not necessarily separate devices. For example, the reinforcement member transfer unit 32 of the reinforcement member transfer device 24 and the reinforcement member application unit 9 of the reinforcement member application device 1 are configured to be detachable so that they can be directly connected to the drive mechanism 31 of the reinforcement member transfer device 24, respectively. You may exchange suitably.
Furthermore, the reinforcing member sticking device 1 can be provided in advance in the reinforcing member transfer portion 32 of the reinforcing member transfer device 24. For example, by arranging the reinforcing member attaching portion 9 including the rings 5a and 5b provided with the bladder on the donut at the front portion of the transfer plate 34 of the reinforcing member transferring portion 32, the transfer and the attaching of the reinforcing member 62 are the same. Can be done with the device.
As described above, when the reinforcing member transfer device 24 and the reinforcing member sticking device 1 are integrated, the working efficiency is further improved as compared with the case where the reinforcing member transfer portion 32 and the reinforcing member sticking portion 9 are exchangeable. Can do.

コア支持装置と補強部材転写装置の斜視図である。It is a perspective view of a core support device and a reinforcing member transfer device. 補強部材転写部の正面図であり、図２Ａは補強部材転写部の転写板に補強部材を貼り付ける前の状態を、図２Ｂは補強部材転写部の転写板に補強部材を貼り付けた後の状態を示す図である。補強部材転写部の正面図であり、図２Ａは補強部材転写部の転写板を、図２Ｂはその転写板３４に補強部材を貼り付けた状態を示す図である。FIG. 2A is a front view of the reinforcing member transfer portion, FIG. 2A shows a state before the reinforcing member is attached to the transfer plate of the reinforcing member transfer portion, and FIG. 2B shows a state after the reinforcing member is attached to the transfer plate of the reinforcing member transfer portion. It is a figure which shows a state. FIG. 2A is a front view of the reinforcing member transfer portion, FIG. 2A is a view showing a transfer plate of the reinforcing member transfer portion, and FIG. 2B is a view showing a state where the reinforcing member is attached to the transfer plate 34. 本実施形態に係るコア支持装置と共に示した補強部材貼付装置の概略断面図である。It is a schematic sectional drawing of the reinforcement member sticking apparatus shown with the core support apparatus which concerns on this embodiment. 補強部材圧着手順に従った未加硫タイヤ成型装置の各状態を概略的に示す断面図である。It is sectional drawing which shows roughly each state of the unvulcanized tire shaping | molding apparatus according to the reinforcement member crimping | compression-bonding procedure. 補強部材圧着手順に従った未加硫タイヤ成型装置の各状態を概略的に示す断面図である。It is sectional drawing which shows roughly each state of the unvulcanized tire shaping | molding apparatus according to the reinforcement member crimping | compression-bonding procedure. 補強部材の圧着手順を示すフロー図である。It is a flowchart which shows the crimping | compression-bonding procedure of a reinforcement member. 補強部材を用いた重荷重用空気入りラジアルタイヤの幅方向断面図である。It is sectional drawing of the width direction of the pneumatic radial tire for heavy loads using the reinforcement member.

符号の説明Explanation of symbols

１・・・補強部材貼付装置、２・・・ブラダー支持台、４・・・ブラダー支持軸、５ａ，５ｂ・・・リング、８・・・ブラダー、１０・・・未加硫タイヤ製造装置、１１・・・コア支持装置、１２・・・ハードコア、１４・・・カーカスプライ、１６・・・コア支持台、１８・・・コア支持軸、２４・・・補強部材転写装置、２６・・・レール、２８・・・ベース、３０・・・昇降装置、３１・・・モータ、３２・・・補強部材転写部、３４・・・転写板、３６・・・スリット、３８・・・円筒部材、４０・・・ベース円板、５８・・・未加硫ゴムシート、６０・・・ゴム被覆コード、６２・・・補強部材、７２・・・ビードワイヤー、７３・・・カーカス、７４・・・ベルト層、７５・・・トレッド部、７６・・・サイドウォールゴム、７８・・・ワイヤーチェーファー。 DESCRIPTION OF SYMBOLS 1 ... Reinforcement member sticking apparatus, 2 ... Bladder support stand, 4 ... Bladder support shaft, 5a, 5b ... Ring, 8 ... Bladder, 10 ... Unvulcanized tire manufacturing apparatus, DESCRIPTION OF SYMBOLS 11 ... Core support apparatus, 12 ... Hard core, 14 ... Carcass ply, 16 ... Core support stand, 18 ... Core support shaft, 24 ... Reinforcement member transfer apparatus, 26 ... Rail, 28 ... Base, 30 ... Lifting device, 31 ... Motor, 32 ... Reinforcement member transfer part, 34 ... Transfer plate, 36 ... Slit, 38 ... Cylindrical member, 40 ... base disk, 58 ... unvulcanized rubber sheet, 60 ... rubber-coated cord, 62 ... reinforcing member, 72 ... bead wire, 73 ... carcass, 74 ... Belt layer, 75 ... tread portion, 76 ... sidewall rubber, 7 ... wire chafer.

Claims (7)

略タイヤ形状の支持体に複数のタイヤ構成部材を貼り付けてグリーンタイヤを構成するタイヤの製造方法であって、
ビード部を補強するための補強部材を支持体上のタイヤ構成部材の所定位置に取り付ける工程と、取り付けた補強部材をガス拡張可能な手段で押圧してタイヤ構成部材に圧着する工程と、を備えたことを特徴とする未加硫タイヤの製造方法。 A tire manufacturing method for forming a green tire by attaching a plurality of tire constituent members to a substantially tire-shaped support,
A step of attaching a reinforcing member for reinforcing the bead portion to a predetermined position of the tire constituent member on the support; and a step of pressing the attached reinforcing member by means capable of gas expansion and crimping to the tire constituent member. A method for producing an unvulcanized tire, wherein 請求項１に記載された未加硫タイヤの製造方法において、
前記圧着する工程は、拡張させたガス拡張可能な手段を、タイヤ構成部材に取り付けた補強部材に第１の方向から押し当てて圧着する第１の圧着工程と、拡張させたガス拡張可能な手段を、タイヤ構成部材に取り付けた補強部材に前記第１の方向と異なる第２の方向から押し当てて圧着する第２の圧着工程と、を有することを特徴とする未加硫タイヤの製造方法。 In the manufacturing method of the unvulcanized tire described in Claim 1,
The crimping step includes a first crimping step of pressing the expanded gas expandable means against the reinforcing member attached to the tire component member from the first direction, and the expanded gas expandable means. And a second crimping step in which the tire is pressed against the reinforcing member attached to the tire constituent member from a second direction different from the first direction and then crimped. 請求項１又は２に記載された未加硫タイヤの製造方法において、
前記ガス拡張可能な手段は、ブラダーであることを特徴とする未加硫タイヤの製造方法。 In the method for producing an unvulcanized tire according to claim 1 or 2,
The method for producing an unvulcanized tire, wherein the gas expandable means is a bladder. 略タイヤ形状の支持体に複数のタイヤ構成部材を貼り付けてグリーンタイヤを構成する未加硫タイヤの製造装置であって、
支持体に貼り付けられたタイヤ構成部材上に補強部材を取り付ける補強部材取付手段と、取り付けた補強部材をガス圧で圧着するガス拡張可能な手段と、を有することを特徴とする未加硫タイヤの製造装置。 An apparatus for manufacturing an unvulcanized tire, which comprises a plurality of tire constituent members attached to a substantially tire-shaped support to constitute a green tire,
An unvulcanized tire comprising reinforcing member attaching means for attaching a reinforcing member on a tire constituent member affixed to a support, and gas expandable means for crimping the attached reinforcing member with gas pressure Manufacturing equipment. 請求項４に記載された未加硫タイヤの製造装置において、
前記ガス拡張可能な手段と前記支持体とを位置整合させる位置整合手段と、を有することを特徴とする未加硫タイヤの製造装置。 In the unvulcanized tire manufacturing apparatus according to claim 4,
An apparatus for manufacturing an unvulcanized tire, comprising: position alignment means for aligning the gas expandable means and the support. 請求項４又は５に記載された未加硫タイヤの製造装置において、
前記補強部材は、製造するタイヤのビード部に対応する円環状を成し、前記ガス拡張可能な手段は、該ガス拡張手段を保持する一対の保持手段を有し、収縮時における前記ガス拡張可能な手段及び一対の保持手段の外径は、円環状を成す前記補強部材の内径より小さいことを特徴とする未加硫タイヤの製造装置。 In the apparatus for manufacturing an unvulcanized tire according to claim 4 or 5,
The reinforcing member has an annular shape corresponding to a bead portion of a tire to be manufactured, and the gas expandable means has a pair of holding means for holding the gas expansion means, and the gas expansion is possible at the time of contraction. An unvulcanized tire manufacturing apparatus characterized in that the outer diameter of such means and the pair of holding means is smaller than the inner diameter of the reinforcing member forming an annular shape. 請求項４ないし６のいずれかに記載された未加硫タイヤの製造装置において、
前記ガス拡張可能な手段はドーナツ状のブラダーであり、かつ前記一対の保持手段はリングであることを特徴とする未加硫タイヤ製造装置。 In the unvulcanized tire manufacturing apparatus according to any one of claims 4 to 6,
The unvulcanized tire manufacturing apparatus, wherein the gas expandable means is a donut-shaped bladder, and the pair of holding means are rings.
JP2008018054A 2008-01-29 2008-01-29 Method and apparatus for producing unvulcanized tire Pending JP2009178874A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130133810A1 (en) * 2011-11-24 2013-05-30 Toyo Tire & Rubber Co., Ltd. Manufacturing method of pneumatic tire and manufacturing apparatus of pneumatic tire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130133810A1 (en) * 2011-11-24 2013-05-30 Toyo Tire & Rubber Co., Ltd. Manufacturing method of pneumatic tire and manufacturing apparatus of pneumatic tire
US8894785B2 (en) * 2011-11-24 2014-11-25 Toyo Tire & Rubber Co., Ltd. Manufacturing method of pneumatic tire and manufacturing apparatus of pneumatic tire

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