JP2006289704A - Tire molding drum - Google Patents

Tire molding drum Download PDF

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JP2006289704A
JP2006289704A JP2005111576A JP2005111576A JP2006289704A JP 2006289704 A JP2006289704 A JP 2006289704A JP 2005111576 A JP2005111576 A JP 2005111576A JP 2005111576 A JP2005111576 A JP 2005111576A JP 2006289704 A JP2006289704 A JP 2006289704A
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tire
molding drum
tire molding
constituent member
peripheral surface
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Yuji Narita
裕司 成田
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Bridgestone Corp
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Bridgestone Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To attempt quality stabilization etc., by improving productivity and preventing deformation etc., by fixing/winding a tire constituent member easily and surely to/onto a tire molding drum irrespective of its shape etc. <P>SOLUTION: A recess 7 of a recessed groove is formed in the peripheral surface 1a of the tire molding drum 1, and a stationary member 2 is housed in the recess 7. With regard to the stationary member 2, on its one end side, the whole of a press body 2a pressing the tire constituent member 3 and a support lever 2b following the press body 2a is formed approximately in a dog leg shape, and the other end part of the support lever 2b is fixed to a rotary shaft 11 set on the side of the recess 7. When the rotary shaft is rotated by a driving mechanism, the stationary member 2 housed in the recess 7 is rotated/operated, and the tip of the tire constituent member 3 such as a side tread is pressed by the press body 2a from the outside in the drum diameter direction, held between it and the peripheral surface 1a, and fixed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、外周にタイヤ構成部材を巻き付けて接合するためのタイヤ成型ドラムに関し、より詳しくは、ドラムに供給されるタイヤ構成部材の巻き付けを容易かつ確実に行うことができるタイヤ成型ドラムに関する。   The present invention relates to a tire molding drum for winding and joining a tire constituent member around an outer periphery, and more particularly to a tire molding drum capable of easily and reliably winding a tire constituent member supplied to the drum.

タイヤを構成する未加硫ゴム等の各種部材を貼り合わせて未加硫の生タイヤを作製するタイヤ成型工程においては、一般にタイヤ成型ドラムを用いた成型方法が広く採用されている。この方法では、回転するタイヤ成型ドラムの外周面に、帯状のインナーライナーやサイドトレッド、カーカスプライ等の各種タイヤ構成部材を順次巻き付け、組み立て・接合していくことで生タイヤ等を作製する。   In a tire molding process in which various members such as unvulcanized rubber constituting a tire are bonded together to produce an unvulcanized raw tire, a molding method using a tire molding drum is widely adopted. In this method, various tire constituent members such as a belt-shaped inner liner, side tread, carcass ply and the like are sequentially wound around an outer peripheral surface of a rotating tire molding drum, and a raw tire or the like is manufactured by assembling and joining.

従って、巻き付け作業中に、タイヤ構成部材が自重によりタイヤ成型ドラムから滑り落ちるのを防止等するため、タイヤ構成部材の先端部を金属製のドラム外周面に固定したうえで、タイヤ成型ドラムを回転させて巻き付ける必要がある。一方で、生タイヤやその半製品の成型後は、タイヤ成型ドラムからそれらを容易に取り外せるように、タイヤ成型ドラムに固定されたタイヤ構成部材の先端部は、容易にドラム外周面から剥がれるのが望ましい。   Therefore, in order to prevent the tire component from sliding off the tire molding drum due to its own weight during the winding operation, the tire molding drum is rotated after fixing the tip of the tire component to the outer peripheral surface of the metal drum. Need to be wrapped around. On the other hand, after molding the raw tire or its semi-finished product, the tip of the tire component fixed to the tire molding drum is easily peeled off from the outer peripheral surface of the drum so that they can be easily removed from the tire molding drum. desirable.

従来から、この課題を解決するため、タイヤ成型ドラムにバキューム機構を設け、外周面に配置したバキューム孔からの吸引でタイヤ構成部材の先端をドラム外周面に吸着・固定し、吸引を止めることで固定を解除することが行われている（特許文献１参照）。   Conventionally, in order to solve this problem, a vacuum mechanism has been provided in the tire molding drum, and the tip of the tire component member is sucked and fixed to the outer peripheral surface of the drum by suction from a vacuum hole disposed on the outer peripheral surface, thereby stopping the suction. The fixing is released (see Patent Document 1).

また、特許文献に記載されたものではないが、図５に、このようなバキューム孔を有する従来のタイヤ成型ドラムの一例を示す。従来のタイヤ成型ドラム９１は、図示のように、サイドトレッド等のタイヤ構成部材９４を巻き付けて接合するための、複数のセグメント等からなる円筒状の外周面９１ａを有し、一方の側面で図示しない駆動手段により軸線回りに駆動回転される水平な主軸９５に取り付けられ、矢印Ｂで示す方向に回転するようになっている。   Moreover, although not described in the patent literature, FIG. 5 shows an example of a conventional tire molding drum having such a vacuum hole. As shown in the figure, a conventional tire molding drum 91 has a cylindrical outer peripheral surface 91a composed of a plurality of segments or the like for winding and joining a tire constituent member 94 such as a side tread, and is illustrated on one side surface. It is attached to a horizontal main shaft 95 driven and rotated around the axis by a driving means that does not rotate, and rotates in the direction indicated by arrow B.

また、外周面９１ａには、直径約１０ｍｍの複数のバキューム孔９２が、ドラム軸方向に略平行に直線上に配設されており、このバキューム孔９２は、バキューム用ホース９３を介して図示しないエアー吸引源に接続されている。送給されてくるサイドトレッド等のタイヤ構成部材９４の先端部は、バキューム孔９２の吸引により吸着・固定され、タイヤ成型ドラム９１の回転によりその外周面９１ａに巻き付くようになっている。   In addition, a plurality of vacuum holes 92 having a diameter of about 10 mm are arranged on the outer peripheral surface 91a on a straight line substantially parallel to the drum axis direction, and the vacuum holes 92 are not shown via a vacuum hose 93. Connected to an air suction source. The front end portion of the tire constituent member 94 such as a side tread that is fed is adsorbed and fixed by suction of the vacuum hole 92, and is wound around the outer peripheral surface 91 a by rotation of the tire molding drum 91.

しかし、この従来のタイヤ成型ドラム９１では、タイヤ構成部材９４の形状や幅等が成型するタイヤのサイズ毎に異なるため、サイズを切り換えようとすると、その度にそれらに応じてバキューム孔９２の位置や部材の吸着位置を変更したり、使用しないバキューム孔９２を閉塞させなければならない等、調整作業に手間がかかり、生産性が悪い。また、タイヤ構成部材９４の吸着位置がずれて薄い部分で吸着してしまうと、吸引により過度に変形してしまい、加硫後の完成タイヤにエアー溜まりが生じる等の不良の原因になる。   However, in the conventional tire molding drum 91, the shape and width of the tire component 94 differ depending on the size of the tire to be molded. Therefore, each time the size is switched, the position of the vacuum hole 92 is changed accordingly. Further, the adjustment work such as changing the suction position of the member or closing the unused vacuum hole 92 is troublesome and the productivity is poor. Further, if the adsorption position of the tire constituent member 94 is deviated and adsorbed at a thin portion, the tire component 94 is excessively deformed by the suction, which causes a defect such as air accumulation in the finished vulcanized tire.

更に、タイヤ構成部材９４が特にサイドトレッドである場合には、その横断面形状が湾曲等して吸着面が平滑ではないため、吸着ミスを起こしやすく、また、その表面形状によっては吸着して固定するのが著しく困難であったり、又は全く固定できないものがある。吸着ミス等によりタイヤ構成部材９４が落下すると、部材の変形や異物の付着等により、完成タイヤの品質に影響が生じてしまい、また、タイヤ構成部材９４を固定できない場合に、手動で巻き付けを行うと、その作業に時間がかかると共に品質にバラツキが発生しやすくなる。その他、吸引に伴う騒音のため作業環境が悪くなるという問題や、バキューム孔９２の形成や、配管・吸引装置等の設置により、タイヤ成型ドラムが高価になるという問題もある。   Further, when the tire constituent member 94 is a side tread, the cross-sectional shape is curved and the adsorption surface is not smooth, so that an adsorption mistake is likely to occur, and depending on the surface shape, the adsorption is fixed. Some are very difficult to do or cannot be fixed at all. If the tire constituent member 94 falls due to an adsorption error or the like, the quality of the finished tire is affected by deformation of the member or adhesion of foreign matter, and when the tire constituent member 94 cannot be fixed, winding is performed manually. As a result, the work takes time and the quality tends to vary. In addition, there is a problem that the working environment is deteriorated due to noise caused by suction, and there is a problem that the tire molding drum becomes expensive due to the formation of the vacuum hole 92 and the installation of piping and suction devices.

このような問題を解消するため、タイヤ成型ドラムの外周面の上記バキューム孔に対応する位置に、硬質クロムメッキ等により平滑性を高めたゴム被着面を形成し、ゴムの粘着力を利用して、タイヤ構成部材の先端部をゴム被着面に固定するようにしたタイヤ成型ドラムが知られている（特許文献２参照）。   In order to solve such problems, a rubber-coated surface with improved smoothness is formed by hard chrome plating at a position corresponding to the vacuum hole on the outer peripheral surface of the tire molding drum, and the rubber adhesive force is used. A tire molding drum is known in which the front end of a tire constituent member is fixed to a rubber-coated surface (see Patent Document 2).

特許文献２に記載されたタイヤ成型ドラムでは、ゴム被着面はドラム軸方向にずらして複数箇所に配置できるため、成型するタイヤのサイズの切り換え毎にゴム被着面の位置の調整作業等をする必要はなく、また、騒音も発生しないため、上記した問題の一部は解消することができる。しかし、硬質クロムメッキ等では、単位面積当たりのゴムの粘着力が小さくドラム表面に固定されにくいため、広い貼り付け面積を必要とするとともに、ゴム被着面にタイヤ構成部材を強い力で押し付けて強固に密着させる必要がある。そのため、タイヤ構成部材の強く押された部分の厚みは小さくなるように変形し、他の部分に比べタイヤ構成部材の形状や厚みが変化して不均一になり、加硫後の完成タイヤでエアー溜まり等の原因になりやすいという問題がある。また、ゴム被着面のメッキを常に平滑に維持する必要があり、その保全のために手間がかかるという問題もある。   In the tire molding drum described in Patent Document 2, the rubber coating surface can be shifted in the drum axial direction and disposed at a plurality of locations. Therefore, the position of the rubber coating surface is adjusted every time the size of the molded tire is switched. It is not necessary to do this, and no noise is generated, so that some of the above problems can be solved. However, in hard chrome plating, etc., the adhesive strength of rubber per unit area is small and it is difficult to fix to the drum surface, so a wide application area is required and the tire component is pressed against the rubber adherend with a strong force. It is necessary to adhere firmly. Therefore, the thickness of the strongly pressed portion of the tire component member is deformed so that the shape and thickness of the tire component member changes and becomes non-uniform compared to other portions. There is a problem that it tends to cause accumulation and the like. Moreover, there is a problem that it is necessary to always keep the plating of the rubber-coated surface smooth, and it takes time and effort to maintain it.

特開平７−１６４５５５号公報Japanese Patent Laid-Open No. 7-164555 特開２００１−２１９４７７号公報JP 2001-219477 A

本発明は、前記従来の問題に鑑みなされたものであって、その目的は、タイヤ構成部材を、その形状等に関わらず容易かつ確実にタイヤ成型ドラムに固定して巻き付けるようにし、生産性の向上や、変形等を防止して品質の安定化等を図ることである。   The present invention has been made in view of the above-described conventional problems, and the object thereof is to easily and reliably fix and wind a tire component member on a tire molding drum regardless of its shape, etc. It is to improve quality, prevent deformation, and stabilize quality.

請求項１の発明は、タイヤ構成部材を外周面に固定し、該固定したタイヤ構成部材を外周面に巻き付けて接合するタイヤ成型ドラムであって、一端がタイヤ成型ドラムに設けられた回転軸に取り付けられ、かつ他端側にタイヤ構成部材を固定するための押圧体を有する固定部材を備え、該固定部材は、前記回転軸を中心に回転動作して前記押圧体でタイヤ構成部材をドラム径方向外側から押さえ、前記外周面との間に挟み込んで固定することを特徴とする。
請求項２の発明は、請求項１に記載されたタイヤ成型ドラムにおいて、前記固定部材は、タイヤ成型ドラムの外周面に形成された凹部に収納可能に設けられていることを特徴とする。
請求項３の発明は、請求項１または２に記載されたタイヤ成型ドラムにおいて、前記固定部材は、タイヤ成型ドラム外周面の軸方向両側に対称に配置されていることを特徴とする。
請求項４の発明は、請求項１ないし３のいずれかに記載されたタイヤ成型ドラムにおいて、前記押圧体のタイヤ構成部材との接触部に、滑り止め部材が設けられていることを特徴とする。
請求項５の発明は、請求項１ないし４のいずれかに記載されたタイヤ成型ドラムにおいて、前記回転軸は、タイヤ成型ドラム中に備えられた駆動機構で駆動されることを特徴とする。 The invention according to claim 1 is a tire molding drum in which a tire constituent member is fixed to an outer peripheral surface, and the fixed tire constituent member is wound around and joined to the outer peripheral surface, and one end is attached to a rotating shaft provided on the tire molding drum. And a fixing member having a pressing body for fixing the tire constituent member to the other end side, the fixing member rotating about the rotating shaft to cause the tire constituent member to have a drum diameter with the pressing body. It is characterized by being pressed from the outside in the direction and sandwiched and fixed between the outer peripheral surface.
According to a second aspect of the present invention, in the tire molding drum according to the first aspect, the fixing member is provided so as to be housed in a recess formed in an outer peripheral surface of the tire molding drum.
According to a third aspect of the present invention, in the tire molding drum according to the first or second aspect, the fixing member is disposed symmetrically on both axial sides of the outer peripheral surface of the tire molding drum.
According to a fourth aspect of the present invention, in the tire molding drum according to any one of the first to third aspects, an anti-slip member is provided at a contact portion of the pressing body with the tire constituent member. .
According to a fifth aspect of the present invention, in the tire molding drum according to any one of the first to fourth aspects, the rotating shaft is driven by a drive mechanism provided in the tire molding drum.

本発明によれば、タイヤ成型ドラムに設けた固定部材で、タイヤ構成部材をドラム径方向外側から押さえて、ドラム外周面との間に挟み込んで固定するため、タイヤ構成部材を、その形状等に関わらず容易かつ確実にタイヤ成型ドラムに固定して巻き付けることができる。従って、タイヤ構成部材の形状に合わせた固定手段の位置の調整作業等が必要なくなるため、生産性を向上させることができる。また、タイヤ構成部材の落下や過度の押し付け等による変形等が防止されるため、品質の安定化を図ることができる。更に、吸引等による騒音がなくなるため、作業環境を改善することもできる。   According to the present invention, the fixing member provided on the tire molding drum presses the tire constituent member from the outer side in the drum radial direction and sandwiches and fixes the tire constituent member between the outer peripheral surface of the drum. Regardless, it can be fixed and wound around the tire molding drum easily and reliably. Accordingly, it is not necessary to adjust the position of the fixing means in accordance with the shape of the tire constituent member, so that productivity can be improved. Moreover, since the deformation | transformation by the fall of a tire structural member, excessive pressing, etc. are prevented, quality can be stabilized. Furthermore, since noise due to suction or the like is eliminated, the work environment can be improved.

以下、本発明のタイヤ成型ドラムの一実施形態を図面を参照して説明する。図１は、本実施形態におけるタイヤ成型ドラムの概略図を示し、タイヤ構成部材の先端を固定して巻き付けている状態の斜視図であり、図２は、図１のＣ−Ｃ線に沿う一部拡大断面図である。   Hereinafter, an embodiment of a tire molding drum of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of a tire molding drum in the present embodiment, and is a perspective view of a state in which the tip of a tire constituent member is fixed and wound, and FIG. 2 is a view along line CC in FIG. FIG.

本実施形態におけるタイヤ成型ドラム１は、図５に示す従来のタイヤ成型ドラム９１と同様に、タイヤ構成部材３を巻き付けて接合するための複数のセグメント等からなる円筒状の外周面１ａを有し、一方の側面で、図示しない駆動手段により軸線回りに駆動回転される水平な主軸６に取り付けられ、矢印Ａで示す方向に回転するようになっている。他方、その外周面１ａには、サイドトレッド等のタイヤ構成部材３をタイヤ成型ドラム１の外周面１ａに固定するための固定部材２を備えており、この点で前記従来のものと相違している。   Similar to the conventional tire molding drum 91 shown in FIG. 5, the tire molding drum 1 in the present embodiment has a cylindrical outer peripheral surface 1a composed of a plurality of segments for winding and joining the tire constituent members 3. On one side, it is attached to a horizontal main shaft 6 that is driven and rotated around an axis by a driving means (not shown), and rotates in the direction indicated by arrow A. On the other hand, the outer peripheral surface 1a is provided with a fixing member 2 for fixing the tire constituent member 3 such as a side tread to the outer peripheral surface 1a of the tire molding drum 1, which is different from the conventional one in this respect. Yes.

つまり、本実施形態では、部材供給サーバー５から供給されたサイドトレッド等のタイヤ構成部材３の先端は、固定部材２によりタイヤ成型ドラム１に固定され、タイヤ成型ドラム１の回転によりその外周面１ａに巻き付くようになっている。   That is, in this embodiment, the front end of the tire constituent member 3 such as a side tread supplied from the member supply server 5 is fixed to the tire molding drum 1 by the fixing member 2, and the outer peripheral surface 1 a is rotated by the rotation of the tire molding drum 1. It comes to wrap around.

タイヤ成型ドラム１は、図２に示すように、インナーライナー等を巻き付ける中央部のセンターセグメント８、サイドトレッド等を巻き付けるドラム両端部のサイド用セグメント９、それらの間に位置し両セグメント８、９に巻かれる部材が重なり合う領域となるサブスペーサ１０等の複数のセグメントからなり、サイド用セグメント９のドラム軸方向外側の端部には断面凹状の溝（以下、凹部という）７が形成されている。凹部７は、タイヤ構成部材（ここではサイドトレッド）３を巻き付ける部分からタイヤ成型ドラム１の端部に向かって直線状に形成されており、その内部に、タイヤ成型ドラム１の外周面１ａの軸方向両側に対称に配置された固定部材２が収納できるようになっている。   As shown in FIG. 2, the tire molding drum 1 includes a center segment 8 at a central portion around which an inner liner and the like are wound, side segments 9 at both end portions of a drum around which a side tread and the like are wound, and both segments 8 and 9 positioned therebetween. A plurality of segments such as a sub-spacer 10 that is an area where members wound around are overlapped, and a groove 7 having a concave cross section (hereinafter referred to as a concave portion) 7 is formed at the outer end of the side segment 9 in the drum axial direction. . The recess 7 is formed linearly from a portion around which the tire component (here, the side tread) 3 is wound toward the end of the tire molding drum 1, and the shaft of the outer peripheral surface 1 a of the tire molding drum 1 is formed therein. The fixing members 2 arranged symmetrically on both sides in the direction can be stored.

なお、凹部７の深さ等の寸法は、固定するサイドトレッド等のタイヤ構成部材３の幅や厚さに応じて、後述する固定部材２の押圧体２ａや支持杆２ｂの寸法が変わるため、これらの寸法に合わせて決定する。また、サイド用セグメント９は、肉厚の大きいサイドトレッド等が巻き付けられ、肉厚の最も厚い部分が形成される部分であるため、その分センターセグメント８等よりも小径になっている。   In addition, since dimensions, such as the depth of the recessed part 7, change the dimension of the press body 2a and the support rod 2b of the fixing member 2 mentioned later according to the width | variety and thickness of the tire structural members 3, such as a side tread to fix, Determine according to these dimensions. Further, the side segment 9 is a portion where the thickest side tread or the like is wound and the thickest portion is formed, so that the side segment 9 has a smaller diameter than the center segment 8 or the like.

タイヤ成型ドラム１は、固定部材２を作動させてタイヤ構成部材３を固定するための駆動機構（図示せず）を備え、また、タイヤ成型ドラム１の側面には、この駆動機構の動力となる空気や油圧等を供給するホース４が接続されている。   The tire molding drum 1 is provided with a drive mechanism (not shown) for operating the fixing member 2 to fix the tire constituent member 3, and the side surface of the tire molding drum 1 serves as power for the drive mechanism. A hose 4 for supplying air or hydraulic pressure is connected.

ここで、前記固定部材２は、図１、図２に示すように、その一端側にドラム径方向外側からタイヤ構成部材３を押さえ、タイヤ成型ドラム１との間に挟み込んで固定するための押圧体２ａと、この押圧体２ａに続く支持杆２ｂとからなる全体が略くの字状に形成されており、支持杆２ｂの他端部は前記凹部７の側面に設けた回転軸１１に固着されている。   Here, as shown in FIGS. 1 and 2, the fixing member 2 presses the tire constituent member 3 from the outer side in the drum radial direction to one end thereof, and is sandwiched between and fixed to the tire molding drum 1. The entire body 2a and the supporting rod 2b following the pressing body 2a are formed in a substantially U shape, and the other end of the supporting rod 2b is fixed to the rotary shaft 11 provided on the side surface of the recess 7. Has been.

固定部材２を回転駆動するための駆動機構としては、例えば、タイヤ成型ドラム１内に設けた油圧又は空圧シリンダのピストン先端にラックを取り付け、それと噛み合うピニオンを回転軸１１に固定し、ピストンを前後動させることで回転軸１１を回転させたり、タイヤ成型ドラム１内に設けた電動モータで歯車やベルトを介して回転軸１１を回転させる等、周知の駆動機構を用いることができる。   As a drive mechanism for rotationally driving the fixing member 2, for example, a rack is attached to the tip of a piston of a hydraulic or pneumatic cylinder provided in the tire molding drum 1, a pinion meshing with the rack is fixed to the rotary shaft 11, and the piston is A known drive mechanism such as rotating the rotating shaft 11 by moving it back and forth, or rotating the rotating shaft 11 via a gear or a belt with an electric motor provided in the tire molding drum 1 can be used.

回転軸１１が前記駆動機構により回転すると、その回転力は回転軸１１に固着された支持杆２ｂを介して固定部材２に伝達され、固定部材２は、凹部７内の収納位置からサイドトレッド等のタイヤ構成部材３の固定位置（図１参照）へ、図２の矢印Ｅで示すように回転動作する。また、押圧体２ａのタイヤ構成部材３に接触する部分には、摩擦力の大きなゴムシート等の滑り止め部材が設けられており、固定したタイヤ構成部材３が動かないようになっている。   When the rotating shaft 11 is rotated by the drive mechanism, the rotational force is transmitted to the fixing member 2 via the support rod 2b fixed to the rotating shaft 11, and the fixing member 2 is moved from the storage position in the recess 7 to the side tread or the like. As shown by an arrow E in FIG. 2, the tire component 3 is rotated to a fixed position (see FIG. 1). Further, an anti-slip member such as a rubber sheet having a large frictional force is provided at a portion of the pressing body 2a that contacts the tire constituent member 3, so that the fixed tire constituent member 3 does not move.

次に、タイヤ成型ドラム１へのタイヤ構成部材（ここではサイドトレッド）３の巻き付け作業等について説明する。図３、図４は、本実施形態の要部である図２の記号Ｄで示す部分の拡大断面図であり、図３は、固定部材２を凹部７に収納したときの状態を示し、図４は、固定部材２によりサイドトレッド３を固定したときの状態を示す。   Next, the winding operation of the tire constituent member (here, the side tread) 3 around the tire molding drum 1 will be described. 3 and 4 are enlarged cross-sectional views of a portion indicated by symbol D in FIG. 2, which is a main part of the present embodiment. FIG. 3 shows a state when the fixing member 2 is housed in the concave portion 7, and FIG. 4 shows a state when the side tread 3 is fixed by the fixing member 2.

まず、図３に示す固定部材２が凹部７に収納された状態（収納位置）で、部材供給サーバー５（図１参照）からサイドトレッド３が供給される。サイドトレッド３の先端部がタイヤ成型ドラム１の外周面１ａに接し、凹部７の位置に達したときに、例えば図示しないセンサによりこれを検知すると、前記駆動機構を駆動して固定部材２を回転動作させる。固定部材２の押圧体２ａは、図３の凹部７内の収納位置から図４に示す位置に回転し、サイドトレッド３の先端をドラム径方向外側から押さえて（固定位置）、タイヤ成型ドラム１の外周面１ａとの間に挟み込んで固定した状態で停止する（この場合、固定部材２は、サイドトレッド３の固定が外れず、かつその位置がずれない程度の力で固定し、過度の力で押さえ付けて永久変形が残らないようにする）。   First, the side tread 3 is supplied from the member supply server 5 (see FIG. 1) in a state where the fixing member 2 shown in FIG. When the tip of the side tread 3 contacts the outer peripheral surface 1a of the tire molding drum 1 and reaches the position of the recess 7, for example, when this is detected by a sensor (not shown), the driving mechanism is driven to rotate the fixing member 2 Make it work. The pressing member 2a of the fixing member 2 rotates from the storage position in the concave portion 7 of FIG. 3 to the position shown in FIG. 4 and presses the tip of the side tread 3 from the outside in the drum radial direction (fixing position). (In this case, the fixing member 2 is fixed with a force that does not cause the side tread 3 to be fixed and the position thereof does not shift). To prevent permanent deformation).

次に、その状態でタイヤ成型ドラム１が回転し（図１参照）、サイドトレッド３を外周面１ａに巻き付けていく。タイヤ成型ドラム１が一周し、サイドトレッド３の後端と固定された先端とが接し、次に、その両端を接合してサイドトレッド３のタイヤ成型ドラム１への巻き付け作業が終了する。これを例えば図示しないセンサが検知すると、前記駆動機構を駆動して固定部材２を逆転させる。これにより固定部材２は、図３に示すように凹部７に収納される。   Next, the tire molding drum 1 rotates in that state (see FIG. 1), and the side tread 3 is wound around the outer peripheral surface 1a. The tire molding drum 1 goes around, the rear end of the side tread 3 comes into contact with the fixed front end, and then the both ends are joined to complete the winding operation of the side tread 3 around the tire molding drum 1. When this is detected by a sensor (not shown), for example, the driving mechanism is driven to reversely rotate the fixing member 2. Thereby, the fixing member 2 is accommodated in the recess 7 as shown in FIG.

なお、部材供給サーバー５からの供給とタイヤ成型ドラム１の回転のタイミングを調整して、タイヤ成型ドラム１の回転に合わせて自動でサイドトレッド３を固定又は解放できるようにしてもよい。
また、サイドトレッド以外のタイヤ構成部材３、例えばインナーライナー等も、固定部材２の寸法を変更する等して、同様に固定してタイヤ成型ドラム１に巻き付けることができる。 The side tread 3 may be automatically fixed or released according to the rotation of the tire molding drum 1 by adjusting the timing of the supply from the member supply server 5 and the rotation of the tire molding drum 1.
Further, the tire constituent member 3 other than the side tread, such as an inner liner, can be similarly fixed and wound around the tire molding drum 1 by changing the dimension of the fixing member 2 or the like.

このように巻き付けたタイヤ構成部材３の上に、固定部材２で固定できないタイヤ構成部材３を更に巻き付けて接合する場合には、ゴム同士の接合となるため、従来と同様に、アプライヤコンベア等で、接合するタイヤ構成部材３先端を下になるタイヤ構成部材３に若干押し付けて圧着・固定し、タイヤ成型ドラム１に巻き付ける。   When the tire constituent member 3 that cannot be fixed by the fixing member 2 is further wound and joined on the tire constituent member 3 wound in this way, the rubber is joined to each other. Then, the tire constituent member 3 to be joined is slightly pressed against the lower tire constituent member 3 to be crimped and fixed, and wound around the tire molding drum 1.

以上説明したように、タイヤ成型ドラム１のサイド用セグメント９の凹部７に設けた固定部材２で、サイドトレッド等のタイヤ構成部材３の先端部をドラム径方向外側から押さえて、ドラム外周面１ａとの間に挟み込んで固定するため、タイヤ構成部材３を、その形状等に関わらず容易かつ確実にタイヤ成型ドラム１の外周面１ａに固定して巻き付けることができる。従って、タイヤ構成部材３の形状に合わせた固定手段の位置の調整作業等が必要なくなるため、生産性を向上させることができる。また、タイヤ構成部材３の落下や過度の押し付け等による変形等が防止されるため、品質の安定化を図ることができる。更に、吸引等による騒音がなくなるため、作業環境を改善することもできる。   As described above, with the fixing member 2 provided in the concave portion 7 of the side segment 9 of the tire molding drum 1, the front end portion of the tire constituent member 3 such as a side tread is pressed from the outer side in the drum radial direction, and the drum outer peripheral surface 1a. Therefore, the tire constituent member 3 can be fixed and wound around the outer peripheral surface 1a of the tire molding drum 1 easily and surely regardless of its shape or the like. Accordingly, the work of adjusting the position of the fixing means in accordance with the shape of the tire constituent member 3 is not necessary, and the productivity can be improved. Moreover, since the deformation | transformation by the fall of the tire structural member 3, excessive pressing, etc. are prevented, quality can be stabilized. Furthermore, since noise due to suction or the like is eliminated, the work environment can be improved.

また、本実施形態のタイヤ成型ドラムは、従来から使用しているタイヤ成型ドラムに固定部材２や凹部７等を追加することで形成できるため、大幅な改造等は必要なく、安価に実現することができる。   In addition, the tire molding drum of the present embodiment can be formed by adding the fixing member 2, the concave portion 7 and the like to the conventionally used tire molding drum. Can do.

なお、固定部材２の押圧体２ａを長くして、サイドトレッドよりもドラム軸方向内側に巻き付けられるタイヤ構成部材３を固定するようにもでき、その形状も、タイヤ構成部材３との接触面積を大きくして、より強固に固定できるよう平板状にするなど、固定するタイヤ構成部材３に合わせて変更することができる。また、固定部材２は、固定するタイヤ構成部材３の種類やその寸法、位置等に対応して、ドラム軸方向にずらして複数箇所に設けてもよく、その位置も、サイド用セグメント９以外、例えばセンターセグメント８やタイヤ成型ドラム１の側面部等に設けてもよい。更に、本実施形態における固定方法と、従来からのバキューム孔等による固定方法とを組み合わせて、固定するタイヤ構成部材３の形状や位置等に応じて使い分けるようにしてもよい。   The pressing member 2a of the fixing member 2 can be lengthened to fix the tire constituent member 3 wound around the inner side in the drum axial direction than the side tread, and the shape of the pressing member 2a also increases the contact area with the tire constituent member 3. It can be changed according to the tire constituent member 3 to be fixed, such as a flat plate shape that can be increased and fixed more firmly. Further, the fixing member 2 may be provided in a plurality of locations by shifting in the drum axis direction in accordance with the type of the tire constituent member 3 to be fixed, its size, position, and the like. For example, you may provide in the side segment of the center segment 8, the tire molding drum 1, etc. Furthermore, the fixing method in the present embodiment and the conventional fixing method using a vacuum hole or the like may be combined so that they are properly used according to the shape, position, etc. of the tire constituent member 3 to be fixed.

本実施形態におけるタイヤ成型ドラムの斜視図である。It is a perspective view of the tire molding drum in this embodiment. 図１のＣ−Ｃ線に沿う一部拡大断面図である。It is a partially expanded sectional view which follows the CC line of FIG. 本実施形態におけるタイヤ成型ドラム（サイドトレッド固定前）の要部拡大断面図（図２Ｄ部）である。It is a principal part expanded sectional view (Drawing 2D part) of a tire molding drum (before side tread fixation) in this embodiment. 本実施形態におけるタイヤ成型ドラム（サイドトレッド固定後）の要部拡大断面図（図２Ｄ部）である。It is a principal part expanded sectional view (Drawing 2D part) of a tire molding drum (after side tread fixation) in this embodiment. バキューム孔を有する従来のタイヤ成型ドラムである。It is the conventional tire molding drum which has a vacuum hole.

符号の説明Explanation of symbols

１・・・タイヤ成型ドラム、１ａ・・・外周面、２・・・固定部材、２ａ・・・押圧体、２ｂ・・・支持杆、３・・・タイヤ構成部材、４・・・ホース、５・・・部材供給サーバー、６・・・主軸、７・・・凹部、８・・・センターセグメント、９・・・サイド用セグメント、１０・・・サブスペーサ、１１・・・回転軸。   DESCRIPTION OF SYMBOLS 1 ... Tire molding drum, 1a ... Outer peripheral surface, 2 ... Fixing member, 2a ... Pressing body, 2b ... Support rod, 3 ... Tire constituent member, 4 ... Hose, DESCRIPTION OF SYMBOLS 5 ... Member supply server, 6 ... Main shaft, 7 ... Recessed part, 8 ... Center segment, 9 ... Side segment, 10 ... Subspacer, 11 ... Rotating shaft.

Claims (5)

タイヤ構成部材を外周面に固定し、該固定したタイヤ構成部材を外周面に巻き付けて接合するタイヤ成型ドラムであって、
一端がタイヤ成型ドラムに設けられた回転軸に取り付けられ、かつ他端側にタイヤ構成部材を固定するための押圧体を有する固定部材を備え、
該固定部材は、前記回転軸を中心に回転動作して前記押圧体でタイヤ構成部材をドラム径方向外側から押さえ、前記外周面との間に挟み込んで固定することを特徴とするタイヤ成型ドラム。 A tire molding drum that fixes a tire constituent member to an outer peripheral surface, and wraps and joins the fixed tire constituent member to the outer peripheral surface,
One end is attached to a rotating shaft provided on the tire molding drum, and a fixing member having a pressing body for fixing the tire constituent member on the other end side is provided.
The fixing member is configured to rotate around the rotating shaft, press the tire constituent member from the outer side in the drum radial direction with the pressing body, and sandwich and fix the tire constituent member between the outer peripheral surface. 請求項１に記載されたタイヤ成型ドラムにおいて、
前記固定部材は、タイヤ成型ドラムの外周面に形成された凹部に収納可能に設けられていることを特徴とするタイヤ成型ドラム。 In the tire molding drum described in claim 1,
The tire molding drum is characterized in that the fixing member is provided so as to be housed in a recess formed in an outer peripheral surface of the tire molding drum. 請求項１または２に記載されたタイヤ成型ドラムにおいて、
前記固定部材は、タイヤ成型ドラム外周面の軸方向両側に対称に配置されていることを特徴とするタイヤ成型ドラム。 In the tire molding drum according to claim 1 or 2,
The tire molding drum, wherein the fixing members are arranged symmetrically on both sides in the axial direction of the outer circumferential surface of the tire molding drum. 請求項１ないし３のいずれかに記載されたタイヤ成型ドラムにおいて、
前記押圧体のタイヤ構成部材との接触部に、滑り止め部材が設けられていることを特徴とするタイヤ成型ドラム。 In the tire molding drum according to any one of claims 1 to 3,
An anti-slip member is provided at a contact portion of the pressing body with a tire constituent member. 請求項１ないし４のいずれかに記載されたタイヤ成型ドラムにおいて、
前記回転軸は、タイヤ成型ドラム中に備えられた駆動機構で駆動されることを特徴とするタイヤ成型ドラム。 In the tire molding drum according to any one of claims 1 to 4,
The rotating shaft is driven by a driving mechanism provided in the tire molding drum.
JP2005111576A 2005-04-08 2005-04-08 Tire molding drum Pending JP2006289704A (en)

Priority Applications (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012040797A (en) * 2010-08-20 2012-03-01 Bridgestone Corp Apparatus and method for manufacturing annular member
CN106660288A (en) * 2014-08-27 2017-05-10 不二精工株式会社 Clamping device
CN109624367A (en) * 2018-11-30 2019-04-16 萨驰华辰机械(苏州)有限公司 A kind of tire assembly drum

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012040797A (en) * 2010-08-20 2012-03-01 Bridgestone Corp Apparatus and method for manufacturing annular member
CN106660288A (en) * 2014-08-27 2017-05-10 不二精工株式会社 Clamping device
CN106660288B (en) * 2014-08-27 2019-05-28 不二精工株式会社 Clamping device
CN109624367A (en) * 2018-11-30 2019-04-16 萨驰华辰机械(苏州)有限公司 A kind of tire assembly drum

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