JP2011240658A - Connection member for tire-molding drum and tire-molding machine - Google Patents

Connection member for tire-molding drum and tire-molding machine Download PDF

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JP2011240658A
JP2011240658A JP2010116419A JP2010116419A JP2011240658A JP 2011240658 A JP2011240658 A JP 2011240658A JP 2010116419 A JP2010116419 A JP 2010116419A JP 2010116419 A JP2010116419 A JP 2010116419A JP 2011240658 A JP2011240658 A JP 2011240658A
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tire molding
molding drum
drive shaft
piston
tire
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JP5544218B2 (en
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Satoshi Okamoto
理史 岡本
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Bridgestone Corp
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Bridgestone Corp
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Abstract

PROBLEM TO BE SOLVED: To attach and detach easily a tire-molding drum to a driving shaft.SOLUTION: A connection member 10 for a tire-molding drum which attachably and detachably connects a tire-molding drum to a driving shaft 11 supported rotatably around an axis line O is provided with a first cylindrical connection body 15 fixed to any one of the driving shaft and the tire-molding drum 13, and a second cylindrical connection body 16 fixed to the other. The first connection body is provided with a piston 17 housed in a cylinder chamber 14 and reciprocating in the axial direction by supplying and evacuating air to the cylinder chamber 14, and an expansion and contraction member 18 coordinated with the piston to be subjected to expansion and contraction displacement accompanying reciprocation of the piston 17. The second connection body is provided with an engaging member 31 gravitating the tire-molding drum to a driving shaft side by engaging the expansion contraction member when the piston moves forwardly in a state of surrounding the expansion and contraction member from the outside of the radial direction to subject the expansion and contraction member to expansion and contraction displacement.

Description

本発明は、タイヤ成型ドラム連結部材およびタイヤ成型機に関するものである。   The present invention relates to a tire molding drum connecting member and a tire molding machine.

一般にタイヤ成型機は、軸線回りに回転可能に支持された駆動軸を有する成型機本体と、駆動軸に着脱自在に連結されたタイヤ成型ドラムと、を備えている。
この種のタイヤ成型機として、例えば下記特許文献１に示されるような、駆動軸におけるタイヤ成型ドラムとの連結部分に雄ねじ部を形成し、タイヤ成型ドラムにおける駆動軸との連結部分にフランジ部を突設し、このフランジ部を駆動軸側に向けて押圧するカムフォロアを備える連結筒部材が前記雄ねじ部に着脱自在に螺着された構成が知られている。 Generally, a tire molding machine includes a molding machine main body having a drive shaft that is rotatably supported around an axis, and a tire molding drum that is detachably connected to the drive shaft.
As this type of tire molding machine, for example, as shown in Patent Document 1 below, a male screw portion is formed at a connection portion of a drive shaft with a tire molding drum, and a flange portion is formed at a connection portion of the tire molding drum with a drive shaft. There is known a configuration in which a connecting cylinder member provided with a cam follower that protrudes and presses the flange portion toward the drive shaft is detachably screwed to the male screw portion.

特開２００４−３５８７２６号公報JP 2004-358726 A

しかしながら、前記従来のタイヤ成型機においては、タイヤ成型ドラムを駆動軸に容易に着脱することについて改善の余地があった。   However, the conventional tire molding machine has room for improvement with respect to easily attaching and detaching the tire molding drum to and from the drive shaft.

この発明は、このような事情を考慮してなされたもので、タイヤ成型ドラムを駆動軸に容易に着脱することができるタイヤ成型ドラム連結部材およびタイヤ成型機を提供することを目的とする。   The present invention has been made in consideration of such circumstances, and an object of the present invention is to provide a tire molding drum connecting member and a tire molding machine capable of easily attaching and detaching a tire molding drum to and from a drive shaft.

前記課題を解決して、このような目的を達成するために、本発明のタイヤ成型ドラム連結部材は、軸線回りに回転可能に支持された駆動軸にタイヤ成型ドラムを着脱自在に連結するタイヤ成型ドラム連結部材であって、駆動軸およびタイヤ成型ドラムのうちのいずれか一方に装着される筒状の第１連結体、および他方に装着される筒状の第２連結体を備え、前記第１連結体は、シリンダ室に収納され、かつ該シリンダ室へのエアの給排により前記軸線方向に往復動するピストンと、該ピストンに連係され該ピストンの往復動に伴って半径方向に拡縮変位させられる拡縮部材と、を備え、前記第２連結体は、前記拡縮部材を半径方向の外側から囲繞した状態で、前記ピストンが前進移動して前記拡縮部材が拡径変位したときに、該拡縮部材が係合することにより、前記タイヤ成型ドラムが前記駆動軸側に引き寄せられる係合部材を備えていることを特徴とする。   In order to solve the above-mentioned problems and achieve such an object, the tire molding drum connecting member of the present invention is a tire molding in which a tire molding drum is detachably connected to a drive shaft that is rotatably supported around an axis. A drum coupling member, comprising: a cylindrical first coupling body mounted on one of the drive shaft and the tire molding drum; and a cylindrical second coupling body mounted on the other, the first The coupling body is housed in the cylinder chamber and reciprocates in the axial direction by supplying and discharging air to the cylinder chamber, and is linked to the piston and is expanded and contracted in the radial direction along with the reciprocating motion of the piston. Expansion / contraction member, and when the expansion / contraction member is expanded and displaced by the piston moving forward in a state of surrounding the expansion / contraction member from the outside in the radial direction, the expansion / contraction member Is engaged By the tire building drum, characterized in that it comprises an engagement member that is attracted to the driving shaft side.

この発明によれば、係合部材により拡縮部材を半径方向の外側から囲繞した状態で、シリンダ室へエアを給排してピストンを前進移動させ、拡縮部材を拡径変位させると、該拡縮部材が係合部材に係合する。これにより、タイヤ成型ドラムが駆動軸側に引き寄せられ、タイヤ成型ドラムが駆動軸に連結される。
そして、シリンダ室へエアを給排してピストンを後退移動させると、拡縮部材が縮径変位させられて係合部材から離脱され、タイヤ成型ドラムが駆動軸から取り外し可能になる。
以上より、タイヤ成型ドラムを駆動軸に容易に着脱することができる。
またこのように、シリンダ室へエアを給排してピストンを往復動させれば、タイヤ成型ドラムが駆動軸に着脱されることから、例えばボルト締結作業等といった人手による作業を最小限に抑えることもできる。 According to the present invention, when the expansion / contraction member is surrounded by the engaging member from the outside in the radial direction, air is supplied / discharged to / from the cylinder chamber, the piston is moved forward, and the expansion / contraction member is expanded and displaced. Engages with the engaging member. As a result, the tire molding drum is drawn toward the drive shaft, and the tire molding drum is connected to the drive shaft.
Then, when air is supplied to and discharged from the cylinder chamber and the piston is moved backward, the expansion / contraction member is displaced in diameter and detached from the engagement member, so that the tire molding drum can be detached from the drive shaft.
As described above, the tire molding drum can be easily attached to and detached from the drive shaft.
Also, if air is supplied to and discharged from the cylinder chamber and the piston is reciprocated in this way, the tire molding drum is attached to and detached from the drive shaft, so that manual work such as bolt fastening work is minimized. You can also.

ここで、前記ピストンはシリンダ室に前方付勢状態で収納されてもよい。   Here, the piston may be stored in the cylinder chamber in a forward biased state.

この場合、ピストンがシリンダ室に前方付勢状態で収納されているので、タイヤ成型ドラムが駆動軸に連結された連結状態で、例えばシリンダ室とエア供給源との連通が不意に遮断された場合にも、ピストンを後退移動させ難くしてその位置に留め置き易くすることが可能になる。
したがって、前述の連結状態でシリンダ室とエア供給源との連通が不意に遮断された場合に、拡縮部材が縮径変位して係合部材から離脱するのを抑制することが可能になり、タイヤ成型ドラムが駆動軸から外れるのを防ぐことができる。 In this case, since the piston is housed in the cylinder chamber in a forward-biased state, when the tire molding drum is coupled to the drive shaft, for example, the communication between the cylinder chamber and the air supply source is unexpectedly interrupted. In addition, it is possible to make it difficult to move the piston backward so that it can be easily retained in that position.
Therefore, when the communication between the cylinder chamber and the air supply source is unexpectedly interrupted in the above-described connection state, it is possible to suppress the expansion / contraction member from being displaced in diameter and being detached from the engagement member. It is possible to prevent the molding drum from coming off the drive shaft.

また、前記ピストンには、前記シリンダ室から前方に突出する支持部が連結され、前記拡縮部材は、半径方向の内側に前記支持部が前記軸線方向に摺動自在に嵌合されるとともに、半径方向に貫通する案内孔が周方向に間隔をあけて複数形成されたガイド筒部と、前記案内孔内に半径方向に移動自在に嵌合され、かつガイド筒部の外周面から半径方向の外側に突出可能に配設された球状体と、を備え、前記支持部の外周面において前記球状体に摺接する部分には、前方に向かうに従い漸次縮径された傾斜面部が形成され、前記係合部材には、前方から後方に向かうに従い漸次縮径し、かつ拡径変位した前記拡縮部材の球状体が前方から係合する係合面が形成されてもよい。   The piston is connected to a support portion that protrudes forward from the cylinder chamber, and the expansion / contraction member is fitted inside the radial direction so that the support portion is slidable in the axial direction and has a radius. A guide tube portion having a plurality of guide holes penetrating in the circumferential direction spaced apart in the circumferential direction, and is fitted in the guide hole so as to be movable in the radial direction, and radially outward from the outer peripheral surface of the guide tube portion And an inclined surface portion that is gradually reduced in diameter toward the front is formed on the outer peripheral surface of the support portion in sliding contact with the spherical body. The member may be formed with an engagement surface that gradually decreases in diameter from the front toward the rear and engages the spherical body of the expansion / contraction member that has been expanded and displaced from the front.

この場合、ピストンが前記軸線方向に往復動すると、支持部が拡縮部材のガイド筒部の内周面上を摺動し、かつ支持部の傾斜面部がガイド筒部の案内孔内の球状体に摺接することで、この球状体が半径方向に移動する。
そして、係合部材が拡縮部材を半径方向の外側から囲繞した状態で、ピストンおよび支持部が前進移動し、球状体が、半径方向の外側に移動してガイド筒部の外周面から半径方向の外側に突出すると、この球状体が係合部材の係合面に前方から係合することにより、球状体から係合面を介してタイヤ成型ドラムに駆動軸側に向けた力が伝達され、タイヤ成型ドラムが駆動軸側に引き寄せられる。
以上より、構造を複雑にすることなく、タイヤ成型ドラムを駆動軸に容易に着脱することができる。 In this case, when the piston reciprocates in the axial direction, the support portion slides on the inner peripheral surface of the guide tube portion of the expansion / contraction member, and the inclined surface portion of the support portion becomes a spherical body in the guide hole of the guide tube portion. By making sliding contact, the spherical body moves in the radial direction.
Then, in a state where the engaging member surrounds the expansion / contraction member from the outside in the radial direction, the piston and the support portion move forward, and the spherical body moves to the outside in the radial direction to move from the outer peripheral surface of the guide tube portion in the radial direction. When projecting outward, the spherical body is engaged with the engaging surface of the engaging member from the front, whereby the force directed toward the drive shaft is transmitted from the spherical body to the tire molding drum via the engaging surface. The molding drum is drawn toward the drive shaft side.
As described above, the tire molding drum can be easily attached to and detached from the drive shaft without complicating the structure.

さらに、前記支持部の外周面において、前記傾斜面部より後方に位置しかつ前記ガイド筒部の内周面が摺接する摺接面部と、前記傾斜面部と、の間に位置する部分には、前記軸線方向に沿って延在しかつ外径が前記摺接面部より小径の平滑面部が形成され、前記タイヤ成型ドラムが駆動軸に連結された状態で、前記球状体は、前記支持部の外周面において、前記平滑面部、若しくは前記平滑面部より後方に位置する部分に載置されてもよい。   Further, on the outer peripheral surface of the support portion, the portion positioned between the inclined surface portion and the sliding surface portion that is located behind the inclined surface portion and the inner peripheral surface of the guide tube portion is in sliding contact with the inclined surface portion, In a state where a smooth surface portion extending along the axial direction and having an outer diameter smaller than the sliding contact surface portion is formed and the tire molding drum is connected to a drive shaft, the spherical body is an outer peripheral surface of the support portion. In the above, it may be placed on the smooth surface portion or a portion located behind the smooth surface portion.

この場合、前述の連結状態で、例えばシリンダ室とエア供給源との連通が不意に遮断された場合に、ピストンおよび支持部が後退移動しようとしても、支持部の平滑面部上の球状体からは、この平滑面部に半径方向の力しか加わらないので、支持部の平滑面部が球状体を後方に通過し難くすることが可能になり、支持部の傾斜面部が球状体に到達するのを防ぐことができる。これにより、前述の連結状態でシリンダ室とエア供給源との連通が不意に遮断された場合に、支持部およびピストンが後退移動するのを確実に抑えることができる。
さらにこのように、支持部の外周面に平滑面部が形成されていることから、前述の連結状態における球状体および支持部の前記軸線方向の相対的な位置を容易に決めることができる。 In this case, in the above-mentioned connected state, for example, when the communication between the cylinder chamber and the air supply source is unexpectedly interrupted, even if the piston and the support portion try to move backward, the spherical body on the smooth surface portion of the support portion Since only a radial force is applied to the smooth surface portion, the smooth surface portion of the support portion can hardly pass through the spherical body backward, and the inclined surface portion of the support portion can be prevented from reaching the spherical body. Can do. Accordingly, when the communication between the cylinder chamber and the air supply source is unexpectedly interrupted in the above-described connected state, it is possible to reliably prevent the support portion and the piston from moving backward.
Furthermore, since the smooth surface portion is formed on the outer peripheral surface of the support portion as described above, the relative positions of the spherical body and the support portion in the axial direction in the above-described connected state can be easily determined.

また、前記第１連結体は、前記ピストンが前記軸線方向に摺動自在に外嵌されるとともに、内径が前方から後方に向かうに従い漸次縮径された第１嵌合筒を備え、前記第２連結体は、前記第１嵌合筒内に離脱自在に嵌合されるとともに、外径が前方から後方に向かうに従い漸次縮径された第２嵌合筒を備えてもよい。   The first coupling body includes a first fitting cylinder in which the piston is slidably fitted in the axial direction and whose inner diameter is gradually reduced from the front toward the rear. The coupling body may include a second fitting cylinder that is removably fitted into the first fitting cylinder and whose outer diameter is gradually reduced from the front toward the rear.

この場合、第１嵌合筒の内径および第２嵌合筒の外径がそれぞれ、前方から後方に向かうに従い漸次縮径しているので、タイヤ成型ドラムを駆動軸に連結した状態で、タイヤ成型ドラムの自重による垂れ下がりを生じ難くすることが可能になるとともに、タイヤ成型ドラムの軸線と駆動軸の軸線とを容易かつ高精度に合わせることができる。   In this case, since the inner diameter of the first fitting cylinder and the outer diameter of the second fitting cylinder are gradually reduced from the front to the rear, the tire molding is performed with the tire molding drum connected to the drive shaft. It is possible to make it difficult for the drum to hang down due to its own weight, and the axis of the tire molding drum and the axis of the drive shaft can be easily and accurately aligned.

さらに、前記第１連結体および第２連結体それぞれにおいて、前記軸線方向に沿って互いに対向する対向面同士の間には、隙間が設けられてもよい。   Furthermore, in each of the first connector and the second connector, a gap may be provided between opposing surfaces facing each other along the axial direction.

この場合、第１連結体および第２連結体それぞれにおいて、前記軸線方向で互いに対向する対向面同士の間に、隙間が設けられているので、タイヤ成型ドラムを駆動軸に連結するときに、タイヤ成型ドラムの軸線と駆動軸の軸線とがずれた状態で前記対向面同士が当接するのを抑制することが可能になり、これらの両軸線を容易かつ確実に合わせることができる。   In this case, since a gap is provided between the opposing surfaces facing each other in the axial direction in each of the first connecting body and the second connecting body, when connecting the tire molding drum to the drive shaft, It is possible to prevent the opposed surfaces from coming into contact with each other in a state where the axis of the molding drum and the axis of the drive shaft are deviated, and the two axes can be easily and reliably aligned.

また、本発明のタイヤ成型機は、軸線回りに回転可能に支持された駆動軸を有する成型機本体と、前記駆動軸に着脱自在に連結されたタイヤ成型ドラムと、を備えるタイヤ成型機であって、前記タイヤ成型ドラムは、本発明のタイヤ成型ドラム連結部材を介して前記駆動軸に連結されていることを特徴とする。   A tire molding machine according to the present invention is a tire molding machine comprising: a molding machine main body having a drive shaft that is rotatably supported about an axis; and a tire molding drum that is detachably connected to the drive shaft. The tire molding drum is connected to the drive shaft via a tire molding drum connecting member of the present invention.

この発明によれば、タイヤ成型ドラムを駆動軸に容易に着脱することができる。   According to this invention, the tire molding drum can be easily attached to and detached from the drive shaft.

さらに、前記駆動軸およびタイヤ成型ドラムには、互いが噛合うことでこれら駆動軸およびタイヤ成型ドラムの相対的な前記軸線回りの位置が決められるクラッチ部材が各別に配設され、これら駆動軸およびタイヤ成型ドラムのうちのいずれか一方には、該一方に配設された前記クラッチ部材を他方に向けて付勢する付勢手段が配設されてもよい。   Furthermore, the drive shaft and the tire molding drum are each provided with a clutch member that can determine the relative positions of the drive shaft and the tire molding drum around the axis by meshing with each other. One of the tire molding drums may be provided with an urging means for urging the clutch member disposed on the one toward the other.

この場合、タイヤ成型ドラムを駆動軸に連結するに際し、駆動軸およびタイヤ成型ドラムに各別に配設された両クラッチ部材が互いに噛合わず前記軸線方向に突き合わされると、前記一方に配設されたクラッチ部材が、前記付勢手段による付勢力に抗して、前記他方に配設されたクラッチ部材により押し込まれる。
そして、タイヤ成型ドラムおよび駆動軸の相対的な前記軸線回りの位置が、両クラッチ部材が互いに噛合う位置になると、前記付勢手段による付勢力により、前記一方に配設されたクラッチ部材が前記他方に向けて移動し、これらの両クラッチ部材が互いに噛合う。
以上より、タイヤ成型ドラムを駆動軸に連結するに際し、これらのタイヤ成型ドラムおよび駆動軸の相対的な前記軸線回りの位置を容易かつ確実に合わせることができる。 In this case, when the tire molding drum is connected to the drive shaft, when both clutch members respectively disposed on the drive shaft and the tire molding drum are not engaged with each other and are abutted in the axial direction, they are disposed on the one side. The clutch member is pushed in by the clutch member disposed on the other side against the urging force of the urging means.
When the relative position of the tire molding drum and the drive shaft about the axis line is a position where the clutch members are engaged with each other, the urging force of the urging means causes the clutch member disposed on the one side to The two clutch members engage with each other.
As described above, when the tire molding drum is coupled to the drive shaft, the relative positions of the tire molding drum and the drive shaft around the axis can be easily and reliably aligned.

この発明に係るタイヤ成型ドラム連結部材およびタイヤ成型機によれば、タイヤ成型ドラムを駆動軸に容易に着脱することができる。   According to the tire molding drum connecting member and the tire molding machine according to the present invention, the tire molding drum can be easily attached to and detached from the drive shaft.

本発明に係る一実施形態として示したタイヤ成型機の要部縦断面図である。It is a principal part longitudinal cross-sectional view of the tire molding machine shown as one Embodiment which concerns on this invention. 図１に示すタイヤ成型機であって、駆動軸とタイヤ成型ドラムとが軸線方向に分離された状態を示す要部縦断面図である。FIG. 2 is a longitudinal sectional view of a main part of the tire molding machine illustrated in FIG. 1, showing a state where a drive shaft and a tire molding drum are separated in an axial direction. 図１および図２に示すタイヤ成型機であって、係合部材により拡縮部材を半径方向の外側から囲繞した後、拡縮部材を拡径変位させる前の仮組み状態を示す要部縦断面図である。It is a tire molding machine shown in Drawing 1 and Drawing 2, and after enclosing an expansion-contraction member from the outside of a radial direction with an engagement member, it is a principal part longitudinal cross-sectional view which shows a temporary assembly state before carrying out diameter expansion displacement of an expansion-contraction member. is there.

以下、本発明に係るタイヤ成型機の一実施形態を、図１から図３を参照しながら説明する。
本実施形態に係るタイヤ成型機１は、図１および図２に示されるように、水平方向に延びる軸線Ｏ回りに回転可能に支持された駆動軸１１を有する成型機本体１２と、駆動軸１１に着脱自在に連結されたタイヤ成型ドラム１３と、を備え、タイヤ成型ドラム１３は、タイヤ成型ドラム連結部材１０を介して駆動軸１１に連結されている。
成型機本体１２は、駆動軸１１と、駆動軸１１を軸線Ｏ回りに回転可能に支持する図示されない駆動手段と、を備えている。
タイヤ成型ドラム１３は、前記軸線Ｏと同軸に位置された状態で駆動軸１１に連結されている。
以下、軸線Ｏに直交する方向を半径方向といい、また、軸線Ｏを中心に周回する方向を周方向といい、さらに、軸線Ｏ方向に沿うタイヤ成型ドラム１３側を前方といい、軸線Ｏ方向に沿う駆動軸１１側を後方という。 Hereinafter, an embodiment of a tire molding machine according to the present invention will be described with reference to FIGS. 1 to 3.
As shown in FIGS. 1 and 2, the tire molding machine 1 according to the present embodiment includes a molding machine main body 12 having a drive shaft 11 rotatably supported around an axis O extending in the horizontal direction, and a drive shaft 11. The tire molding drum 13 is detachably connected to the drive shaft 11, and the tire molding drum 13 is connected to the drive shaft 11 via the tire molding drum connecting member 10.
The molding machine body 12 includes a drive shaft 11 and drive means (not shown) that supports the drive shaft 11 so as to be rotatable about the axis O.
The tire molding drum 13 is connected to the drive shaft 11 while being positioned coaxially with the axis O.
Hereinafter, a direction perpendicular to the axis O is referred to as a radial direction, a direction around the axis O is referred to as a circumferential direction, and the tire molding drum 13 side along the axis O direction is referred to as a front, and the axis O direction. The drive shaft 11 side along the line is referred to as the rear.

本実施形態では、駆動軸１１およびタイヤ成型ドラム１３に、互いが噛合うことでこれら駆動軸１１およびタイヤ成型ドラム１３の相対的な前記軸線Ｏ回りの位置が決められるクラッチ部材３５、３６が各別に配設されている。
クラッチ部材３５、３６は円筒状体とされ、駆動軸１１に配設されたクラッチ部材３５の前端部、およびタイヤ成型ドラム１３に配設されたクラッチ部材３６の後端部にそれぞれ、側面視矩形状の凹凸部が全周にわたって連設されている。そして、両クラッチ部材３５、３６のうちの一方の凹部に他方の凸部が配置されることにより、これらのクラッチ部材３５、３６が互いに噛合っている。 In the present embodiment, the clutch members 35 and 36 that determine the relative positions of the drive shaft 11 and the tire molding drum 13 around the axis O when the drive shaft 11 and the tire molding drum 13 are engaged with each other are provided. It is arranged separately.
The clutch members 35 and 36 are formed in a cylindrical shape, and are respectively rectangular in side view at the front end portion of the clutch member 35 disposed on the drive shaft 11 and the rear end portion of the clutch member 36 disposed on the tire molding drum 13. Shaped uneven portions are provided continuously over the entire circumference. And the other convex part is arrange | positioned in one recessed part of both the clutch members 35 and 36, These clutch members 35 and 36 are mutually meshing | engaged.

また、駆動軸１１およびタイヤ成型ドラム１３のうちのいずれか一方には、該一方に配設されたクラッチ部材３５、３６を他方に向けて付勢する付勢手段３７が配設されている。図示の例では、付勢手段３７は駆動軸１１に配設されるとともにコイルスプリングとされ、その内側に駆動軸１１が挿入されている。
駆動軸１１において、その前端部にクラッチ部材３５が外嵌され、このクラッチ部材３５より後方に位置し前方を向く段部１１ａとクラッチ部材３５の後端面との間に、付勢手段３７が後方に向けて押し込み可能に介装されている。これにより、クラッチ部材３５は、駆動軸１１の前端部に、前方付勢状態で後方に押し込み可能とされて前記軸線Ｏ方向に摺動自在に外嵌されている。また、駆動軸１１の前端部には、外嵌されたクラッチ部材３５が駆動軸１１から前方に抜けるのを防止する図示されない例えばＣリング等の抜け止め手段が配設されている。
一方、タイヤ成型ドラム１３においては、後端部にクラッチ部材３６が外嵌されている。 Further, an urging means 37 for urging the clutch members 35 and 36 disposed on one of the drive shaft 11 and the tire molding drum 13 toward the other is disposed. In the illustrated example, the urging means 37 is disposed on the drive shaft 11 and is a coil spring, and the drive shaft 11 is inserted inside thereof.
In the drive shaft 11, a clutch member 35 is fitted on the front end portion thereof, and a biasing means 37 is disposed between the rear end face of the clutch member 35 and the stepped portion 11 a positioned rearward of the clutch member 35 and facing forward. It is inserted so that it can be pushed in toward. As a result, the clutch member 35 is fitted into the front end portion of the drive shaft 11 so as to be able to be pushed rearward in a forward biased state and slidable in the direction of the axis O. Further, at the front end portion of the drive shaft 11, a retaining means such as a C ring (not shown) for preventing the externally fitted clutch member 35 from coming off from the drive shaft 11 is disposed.
On the other hand, in the tire molding drum 13, a clutch member 36 is fitted on the rear end portion.

タイヤ成型ドラム連結部材１０は、駆動軸１１およびタイヤ成型ドラム１３のうちのいずれか一方に装着される筒状の第１連結体１５、および他方に装着される筒状の第２連結体１６を備えている。
第１連結体１５は、シリンダ室１４に収納され、かつシリンダ室１４へのエアの給排により前記軸線Ｏ方向に往復動するピストン１７と、ピストン１７に連係されピストン１７の往復動に伴って半径方向に拡縮変位させられる拡縮部材１８と、を備えていて、本実施形態では、駆動軸１１に装着されている。 The tire molding drum coupling member 10 includes a cylindrical first coupling body 15 mounted on one of the drive shaft 11 and the tire molding drum 13, and a cylindrical second coupling body 16 mounted on the other. I have.
The first connecting body 15 is accommodated in the cylinder chamber 14 and reciprocates in the direction of the axis O as air is supplied to and discharged from the cylinder chamber 14, and the piston 17 is linked to the piston 17 and reciprocates. An expansion / contraction member 18 that is expanded and contracted in the radial direction, and is mounted on the drive shaft 11 in this embodiment.

図示の例では、第１連結体１５はさらに、駆動軸１１に外嵌された円環状の第１基板１９と、第１基板１９の外周縁部に前方に向けて立設された外筒２０と、第１基板１９の半径方向の中央部に前方に向けて立設された第１嵌合筒２１と、を備えていて、これらの第１基板１９、外筒２０、および第１嵌合筒２１はそれぞれ、前記軸線Ｏと同軸に配設されている。
第１嵌合筒２１には、ピストン１７が前記軸線Ｏ方向に摺動自在に外嵌されている。第１嵌合筒２１の内径は、前方から後方に向かうに従い漸次縮径している。 In the illustrated example, the first connecting body 15 further includes an annular first substrate 19 that is externally fitted to the drive shaft 11, and an outer cylinder 20 that is erected forward on the outer peripheral edge of the first substrate 19. And a first fitting cylinder 21 erected forward in the radial center of the first board 19, and the first board 19, the outer cylinder 20, and the first fitting Each of the cylinders 21 is disposed coaxially with the axis O.
A piston 17 is fitted on the first fitting cylinder 21 so as to be slidable in the direction of the axis O. The inner diameter of the first fitting cylinder 21 is gradually reduced from the front toward the rear.

第１基板１９における半径方向の中間部には、前方に向けて突出する環状突部１９ａが、前記軸線Ｏと同軸に配設されている。この環状突部１９ａに外筒２０の後端部が外嵌され、環状突部１９ａの半径方向の内側に第１嵌合筒２１の後端部が嵌合されている。
外筒２０は、基筒部２２と、基筒部２２より小径のガイド筒部２３と、これらの両筒部２２、２３を連結する環状段部２４と、を備え、これら２２〜２４が前記軸線Ｏと同軸に配置されて後方から前方に向けてこの順に連設されている。
以上の構成において、前述のシリンダ室１４は、第１基板１９の環状突部１９ａの前面と、外筒２０の基筒部２２の内周面と、外筒２０の環状段部２４の後面と、第１嵌合筒２１の外周面と、により囲まれた環状の空間となっている。 An annular protrusion 19 a that protrudes forward is disposed coaxially with the axis O at an intermediate portion in the radial direction of the first substrate 19. The rear end portion of the outer cylinder 20 is fitted on the annular projection 19a, and the rear end portion of the first fitting cylinder 21 is fitted on the inner side in the radial direction of the annular projection 19a.
The outer cylinder 20 includes a base cylinder part 22, a guide cylinder part 23 having a smaller diameter than the base cylinder part 22, and an annular step part 24 that connects both the cylinder parts 22 and 23. It arrange | positions coaxially with the axis line O, and is continuously provided in this order from back to front.
In the above configuration, the cylinder chamber 14 includes the front surface of the annular protrusion 19 a of the first substrate 19, the inner peripheral surface of the base tube portion 22 of the outer cylinder 20, and the rear surface of the annular step portion 24 of the outer cylinder 20. An annular space surrounded by the outer peripheral surface of the first fitting cylinder 21 is formed.

そして、第１連結体１５には、図示されないエア供給源とシリンダ室１４の後端部とを連通する第１給排気孔２５、および前記エア供給源とシリンダ室１４の前端部とを連通する第２給排気孔２６が形成されており、これらの給排気孔２５、２６を通して、シリンダ室１４にエアを給排可能になっている。図示の例では、第１給排気孔２５は、第１基板１９の環状突部１９ａに開口し、第２給排気孔２６は、外筒２０における基筒部２２の内周面と環状段部２４の後面との連結部分に開口している。   The first connector 15 communicates a first air supply / exhaust hole 25 that communicates an air supply source (not shown) with the rear end of the cylinder chamber 14, and the air supply source communicates with the front end of the cylinder chamber 14. A second air supply / exhaust hole 26 is formed, and air can be supplied to and discharged from the cylinder chamber 14 through these air supply / exhaust holes 25, 26. In the illustrated example, the first air supply / exhaust hole 25 opens into the annular protrusion 19 a of the first substrate 19, and the second air supply / exhaust hole 26 includes the inner peripheral surface of the base tube portion 22 in the outer cylinder 20 and the annular stepped portion. 24 is open to the connecting portion with the rear surface.

ここで、前述のピストン１７には、シリンダ室１４から前方に突出する筒状の支持部２７が連結されている。本実施形態では、ピストン１７は円環状に形成され、その内周縁部に支持部２７が前方に向けて立設されている。なお、ピストン１７および支持部２７は前記軸線Ｏと同軸に配設されている。そして、支持部２７は、外筒２０のガイド筒部２３における半径方向の内側に前記軸線Ｏ方向に摺動自在に嵌合されている。
さらにガイド筒部２３には、半径方向に貫通する案内孔２３ａが周方向に間隔をあけて複数形成されていて、各案内孔２３ａ内に半径方向に移動自在に球状体２８が嵌合されている。そして、球状体２８は、案内孔２３ａ内にガイド筒部２３の外周面から半径方向の外側に突出可能に配設されている。なお、案内孔２３ａおよび球状体２８はそれぞれ、周方向に同等の間隔をあけて例えば１２個配設されている。
支持部２７の外周面において球状体２８に摺接する部分には、前方に向かうに従い漸次縮径された傾斜面部２７ａが形成されている。図示の例では、傾斜面部２７ａは、支持部２７の前端部に形成されている。 Here, a cylindrical support portion 27 protruding forward from the cylinder chamber 14 is connected to the piston 17 described above. In the present embodiment, the piston 17 is formed in an annular shape, and a support portion 27 is erected forward at the inner peripheral edge thereof. The piston 17 and the support portion 27 are disposed coaxially with the axis O. The support portion 27 is fitted inside the guide tube portion 23 of the outer tube 20 in the radial direction so as to be slidable in the axis O direction.
Further, a plurality of guide holes 23a penetrating in the radial direction are formed in the guide cylinder portion 23 at intervals in the circumferential direction, and a spherical body 28 is fitted in each guide hole 23a so as to be movable in the radial direction. Yes. The spherical body 28 is disposed in the guide hole 23a so as to protrude outward in the radial direction from the outer peripheral surface of the guide cylinder portion 23. For example, twelve guide holes 23a and spherical bodies 28 are arranged at equal intervals in the circumferential direction.
On the outer peripheral surface of the support portion 27, an inclined surface portion 27 a that is gradually reduced in diameter toward the front is formed at a portion that is in sliding contact with the spherical body 28. In the illustrated example, the inclined surface portion 27 a is formed at the front end portion of the support portion 27.

以上の構成において、ピストン１７および支持部２７が前記軸線Ｏ方向に往復動すると、支持部２７がガイド筒部２３の内周面上を摺動し、かつ案内孔２３ａ内の球状体２８が支持部２７の傾斜面部２７ａに摺接することで、この球状体２８が半径方向に移動する。このうち、ピストン１７および支持部２７が前進移動すると、球状体２８がガイド筒部２３の外周面から半径方向の外側に突出する。
すなわち、案内孔２３ａが形成されたガイド筒部２３と、案内孔２３ａ内に前述のように嵌合された球状体２８と、により、前述の拡縮部材１８が構成されている。なお、案内孔２３ａの内径は、球状体２８の外径より小さくなっており、拡縮部材１８の拡径変位時および縮径変位時の別を問わず常に、球状体２８の中心は、ガイド筒部２３の外周面より半径方向の内側に位置している。
さらに、図２および図３に示されるように、ピストン１７および支持部２７が後端位置に位置している状態で、球状体２８は傾斜面部２７ａの前端部上に位置していて、この球状体２８における半径方向の外端を、ガイド筒部２３の外周面とほぼ面一に位置させることが可能になっている。 In the above configuration, when the piston 17 and the support portion 27 reciprocate in the direction of the axis O, the support portion 27 slides on the inner peripheral surface of the guide tube portion 23 and the spherical body 28 in the guide hole 23a supports. The spherical body 28 moves in the radial direction by slidingly contacting the inclined surface portion 27 a of the portion 27. Among these, when the piston 17 and the support portion 27 move forward, the spherical body 28 protrudes outward in the radial direction from the outer peripheral surface of the guide tube portion 23.
That is, the expansion / contraction member 18 is configured by the guide tube portion 23 in which the guide hole 23a is formed and the spherical body 28 fitted in the guide hole 23a as described above. The inner diameter of the guide hole 23a is smaller than the outer diameter of the spherical body 28, and the center of the spherical body 28 is always at the center of the guide cylinder regardless of whether the expansion / contraction member 18 is expanded or contracted. It is located on the inner side in the radial direction from the outer peripheral surface of the portion 23.
Further, as shown in FIGS. 2 and 3, the spherical body 28 is located on the front end portion of the inclined surface portion 27a in a state where the piston 17 and the support portion 27 are located at the rear end position. The outer end in the radial direction of the body 28 can be positioned substantially flush with the outer peripheral surface of the guide tube portion 23.

また本実施形態では、支持部２７の外周面において、傾斜面部２７ａより後方に位置しかつガイド筒部２３の内周面が摺接する摺接面部２７ｃと、傾斜面部２７ａと、の間に位置する部分には、前記軸線Ｏ方向に沿って延在しかつ外径が摺接面部２７ｃより小径の平滑面部２７ｂが形成されている。
図示の例では、タイヤ成型ドラム１３が駆動軸１１に連結された状態で、球状体２８は平滑面部２７ｂ上に載置されている。また、平滑面部２７ｂは、傾斜面部２７ａに後方から連なっている。平滑面部２７ｂと、摺接面部２７ｃと、の連結部分２７ｄは、前方から後方に向かうに従い漸次、傾斜面部２７ａよりも緩やかに拡径された傾斜面となっている。なお、この平滑面部２７ｂと、ガイド筒部２３の外周面と、の半径方向に沿った距離は、球状体２８の半径より大きく直径より小さくなっている。 Further, in the present embodiment, the outer peripheral surface of the support portion 27 is positioned between the inclined surface portion 27a and the slidable contact surface portion 27c, which is located behind the inclined surface portion 27a and the inner peripheral surface of the guide tube portion 23 is in sliding contact. A smooth surface portion 27b extending along the axis O direction and having an outer diameter smaller than the sliding contact surface portion 27c is formed in the portion.
In the illustrated example, the spherical body 28 is placed on the smooth surface portion 27 b in a state where the tire molding drum 13 is coupled to the drive shaft 11. Further, the smooth surface portion 27b is connected to the inclined surface portion 27a from the rear. The connecting portion 27d between the smooth surface portion 27b and the slidable contact surface portion 27c is an inclined surface that is gradually expanded in diameter from the inclined surface portion 27a gradually from the front to the rear. In addition, the distance along the radial direction between the smooth surface portion 27b and the outer peripheral surface of the guide tube portion 23 is larger than the radius of the spherical body 28 and smaller than the diameter.

ここで、第１基板１９の環状突部１９ａには、前方に向けて開口する収納孔が周方向に間隔をあけて複数形成されている。各収納孔の底部には、前方に向けてシャフト２９およびコイルスプリング３０が立設されて環状突部１９ａよりも前方に突出している。コイルスプリング３０の内側にシャフト２９が挿入されている。ピストン１７には後方に向けて開口し、シャフト２９が進退自在に挿入されるガイド孔１７ａが形成されている。そして、ピストン１７は、前記軸線Ｏ方向の位置にかかわらず常にコイルスプリング３０により前方に付勢されている。また、シャフト２９は、ピストン１７の前記軸線Ｏ方向の位置にかかわらず常に、ガイド孔１７ａ内に位置している。なお、これらの収納孔、シャフト２９、コイルスプリング３０およびガイド孔１７ａは、周方向に同等の間隔をあけて例えば１２個配設されている。   Here, in the annular protrusion 19a of the first substrate 19, a plurality of storage holes that open toward the front are formed at intervals in the circumferential direction. At the bottom of each storage hole, a shaft 29 and a coil spring 30 are erected forward and project forward from the annular protrusion 19a. A shaft 29 is inserted inside the coil spring 30. The piston 17 is formed with a guide hole 17a that opens rearward and into which the shaft 29 is inserted so as to be able to advance and retract. The piston 17 is always urged forward by the coil spring 30 regardless of the position in the axis O direction. The shaft 29 is always located in the guide hole 17a regardless of the position of the piston 17 in the axis O direction. For example, twelve of these storage holes, shaft 29, coil spring 30, and guide hole 17a are arranged at equal intervals in the circumferential direction.

第２連結体１６は、拡縮部材１８を半径方向の外側から囲繞した状態で、ピストン１７が前進移動して拡縮部材１８の球状体２８が拡径変位したときに、球状体２８が係合することにより、タイヤ成型ドラム１３が駆動軸１１側に引き寄せられる係合部材３１を備えていて、本実施形態では、タイヤ成型ドラム１３に装着されている。   The second connecting body 16 engages the spherical body 28 when the piston 17 moves forward and the spherical body 28 of the expanding / contracting member 18 expands and displaces in a state where the expanding / contracting member 18 is surrounded from the outside in the radial direction. Thus, the tire molding drum 13 includes an engaging member 31 that is pulled toward the drive shaft 11, and is attached to the tire molding drum 13 in this embodiment.

図示の例では、第２連結体１６はさらに、外周縁部に筒状の係合部材３１が後方に向けて立設され、かつタイヤ成型ドラム１３に外嵌された円環状の第２基板３２と、第２基板３２の内周縁部に後方に向けて立設された第２嵌合筒３３と、を備えていて、これらの第２基板３２、係合部材３１および第２嵌合筒３３はそれぞれ、前記軸線Ｏと同軸に配設されている。
第２嵌合筒３３は、第１連結体１５の第１嵌合筒２１内に前方から離脱自在に嵌合されるとともに、外径が前方から後方に向かうに従い漸次縮径している。 In the illustrated example, the second connecting body 16 is further provided with an annular second substrate 32 in which a cylindrical engagement member 31 is erected rearward on the outer peripheral edge and is externally fitted to the tire molding drum 13. And a second fitting cylinder 33 erected rearward at the inner peripheral edge of the second substrate 32, and the second substrate 32, the engaging member 31 and the second fitting cylinder 33. Are arranged coaxially with the axis O.
The second fitting cylinder 33 is detachably fitted into the first fitting cylinder 21 of the first connecting body 15 from the front, and gradually decreases in diameter as the outer diameter moves from the front to the rear.

第２基板３２における半径方向の中間部には、後方に向けて突出する環状突部３２ａが、前記軸線Ｏと同軸に配設されている。この環状突部３２ａに係合部材３１の前端部が外嵌され、環状突部３２ａの半径方向の内側に第２嵌合筒３３の前端部が嵌合されている。
係合部材３１には、前方から後方に向かうに従い漸次縮径し、かつ拡径変位した拡縮部材１８の球状体２８が前方から係合する係合面３１ａが形成されている。図示の例では、係合部材３１の後端部には、半径方向の内側に向けて突出する突出部３１ｂが全周にわたって形成されており、この突出部３１ｂにおいて前方を向く面が係合面３１ａとなっている。なお、突出部３１ｂの内径は、ガイド筒部２３の外径よりも大きくなっている。 An annular protrusion 32 a that protrudes rearward is disposed coaxially with the axis O at the radial intermediate portion of the second substrate 32. The front end portion of the engaging member 31 is externally fitted to the annular protrusion 32a, and the front end portion of the second fitting cylinder 33 is fitted inside the annular protrusion 32a in the radial direction.
The engaging member 31 is formed with an engaging surface 31a with which the spherical body 28 of the expanding / contracting member 18 that gradually decreases in diameter and expands and displaces from the front toward the rear from the front. In the illustrated example, the rear end portion of the engaging member 31 is formed with a protruding portion 31b that protrudes inward in the radial direction over the entire circumference, and the surface facing forward in this protruding portion 31b is the engaging surface. 31a. Note that the inner diameter of the protruding portion 31 b is larger than the outer diameter of the guide tube portion 23.

さらに本実施形態では、前述した第１連結体１５および第２連結体１６それぞれにおいて、前記軸線Ｏ方向に沿って互いに対向する対向面同士の間に、該軸線Ｏ方向の隙間が設けられている。
図示の例では、環状段部２４の前面と係合部材３１の後面との間、ガイド筒部２３の前面、支持部２７の前面および第１嵌合筒２１の前面と第２基板３２の環状突部３２ａとの間、並びに第１基板１９の前面と第２嵌合筒３３の後面との間、にそれぞれ、前記軸線Ｏ方向の隙間が設けられている。
また本実施形態では、環状段部２４に位置決めピン３４が前方に向けて立設されるとともに、係合部材３１に、後方に向けて開口し位置決めピン３４が着脱自在に嵌合する位置決め孔３１ｃが形成されている。 Further, in the present embodiment, in each of the first connecting body 15 and the second connecting body 16 described above, a gap in the axis O direction is provided between the opposing surfaces facing each other along the axis O direction. .
In the illustrated example, between the front surface of the annular step portion 24 and the rear surface of the engaging member 31, the front surface of the guide tube portion 23, the front surface of the support portion 27, the front surface of the first fitting tube 21, and the annular shape of the second substrate 32. A gap in the direction of the axis O is provided between the protrusion 32 a and between the front surface of the first substrate 19 and the rear surface of the second fitting cylinder 33.
Further, in the present embodiment, the positioning pin 34 is erected forward in the annular step portion 24, and the positioning hole 31c is opened in the rearward direction in the engaging member 31 so that the positioning pin 34 is detachably fitted. Is formed.

次に、タイヤ成型ドラム連結部材１０を用いて、駆動軸１１とタイヤ成型ドラム１３とを連結する方法について説明する。   Next, a method for connecting the drive shaft 11 and the tire molding drum 13 using the tire molding drum coupling member 10 will be described.

まず、第１連結体１５が装着された駆動軸１１に向けて、第２連結体１６が装着されたタイヤ成型ドラム１３を移動させると、図３に示されるように、第１嵌合筒２１内に第２嵌合筒３３が進入し、かつ係合部材３１内にガイド筒部２３および球状体２８つまり拡縮部材１８が進入する。
この際、駆動軸１１およびタイヤ成型ドラム１３に各別に配設された両クラッチ部材３５、３６が互いに噛合わず、それぞれの先端同士が前記軸線Ｏ方向に突き合わされると、駆動軸１１に配設されたクラッチ部材３５が、付勢手段３７による前方付勢力に抗して、タイヤ成型ドラム１３に配設されたクラッチ部材３６により後方に押し込まれる。 First, when the tire molding drum 13 to which the second connecting body 16 is mounted is moved toward the drive shaft 11 to which the first connecting body 15 is mounted, as shown in FIG. The second fitting cylinder 33 enters the guide cylinder portion 23 and the spherical body 28, that is, the expansion / contraction member 18 enters the engagement member 31.
At this time, if the clutch members 35 and 36 respectively disposed on the drive shaft 11 and the tire molding drum 13 are not engaged with each other and their respective tips are butted in the direction of the axis O, the clutch members 35 and 36 are disposed on the drive shaft 11. The provided clutch member 35 is pushed backward by the clutch member 36 disposed on the tire molding drum 13 against the forward biasing force by the biasing means 37.

そして、例えば駆動軸１１を前記軸線Ｏ回りに回転させる等して、タイヤ成型ドラム１３および駆動軸１１の相対的な前記軸線Ｏ回りの位置が、両クラッチ部材３５、３６が互いに噛合う位置になると、付勢手段３７による付勢力により、駆動軸１１に配設されたクラッチ部材３５が前進移動し、前記両クラッチ部材３５、３６が互いに噛合う。さらにこの際、位置決めピン３４が位置決め孔３１ｃ内に離脱自在に嵌合される。
次に、第２給排気孔２６を通してシリンダ室１４の前方からエアを排出しつつ、第１給排気孔２５を通してシリンダ室１４の後方からエアを供給することで、ピストン１７および支持部２７を前進移動させ、支持部２７の傾斜面部２７ａを、球状体２８に摺接させながらこの球状体２８より前方に位置させて、平滑面部２７ｂ上に球状体２８を乗り上げさせる。この際、支持部２７の前面と第２基板３２の環状突部３２ａとの間には、前記軸線Ｏ方向の隙間Ｘが確保される。 Then, for example, by rotating the drive shaft 11 around the axis O, the relative position of the tire molding drum 13 and the drive shaft 11 around the axis O is a position where the clutch members 35 and 36 mesh with each other. Then, the urging force of the urging means 37 causes the clutch member 35 disposed on the drive shaft 11 to move forward, and the both clutch members 35 and 36 engage with each other. At this time, the positioning pin 34 is removably fitted into the positioning hole 31c.
Next, the air is discharged from the front of the cylinder chamber 14 through the second air supply / exhaust hole 26, and the air is supplied from the rear of the cylinder chamber 14 through the first air supply / exhaust hole 25 to advance the piston 17 and the support portion 27. The inclined surface portion 27a of the support portion 27 is moved forwardly with respect to the spherical body 28 while being in sliding contact with the spherical body 28, and the spherical body 28 is ridden on the smooth surface portion 27b. At this time, a gap X in the axis O direction is ensured between the front surface of the support portion 27 and the annular protrusion 32 a of the second substrate 32.

この過程で、球状体２８が、案内孔２３ａ内を半径方向の外側に向けて移動し、ガイド筒部２３の外周面から半径方向の外側に突出することで、係合部材３１の係合面３１ａに前方から係合する。この際、球状体２８から係合面３１ａを介して第２連結体１６およびタイヤ成型ドラム１３に後方に向けた力が伝達され、第２連結体１６およびタイヤ成型ドラム１３が駆動軸１１側に引き寄せられ、タイヤ成型ドラム１３が駆動軸１１に連結される。さらにこの際、第１連結体１５および駆動軸１１と、第２連結体１６およびタイヤ成型ドラム１３と、の前記軸線Ｏ方向に沿った位置、および半径方向に沿った位置が同時に合わせられる。
以上のようにタイヤ成型ドラム１３が駆動軸１１に連結された状態で、図示の例では、球状体２８は、平滑面部２７ｂ、前記連結部分２７ｄ、案内孔２３ａの内周面および係合部材３１の係合面３１ａに外接して保持される。 In this process, the spherical body 28 moves outward in the radial direction in the guide hole 23 a and protrudes outward in the radial direction from the outer peripheral surface of the guide tube portion 23, so that the engaging surface of the engaging member 31 is engaged. Engage with 31a from the front. At this time, a rearward force is transmitted from the spherical body 28 to the second connecting body 16 and the tire molding drum 13 via the engaging surface 31a, and the second connecting body 16 and the tire molding drum 13 are moved to the drive shaft 11 side. The tire molding drum 13 is connected to the drive shaft 11 by being drawn. Further, at this time, the positions along the axis O direction and the positions along the radial direction of the first coupling body 15 and the drive shaft 11, the second coupling body 16 and the tire molding drum 13 are simultaneously aligned.
With the tire molding drum 13 connected to the drive shaft 11 as described above, in the illustrated example, the spherical body 28 includes the smooth surface portion 27b, the connecting portion 27d, the inner peripheral surface of the guide hole 23a, and the engaging member 31. Is held in contact with the engagement surface 31a.

一方、駆動軸１１からタイヤ成型ドラム１３を取り外す場合には、第１給排気孔２５を通してシリンダ室１４の後方からエアを排出しつつ、第２給排気孔２６を通してシリンダ室１４の前方からエアを供給することで、コイルスプリング３０による前方付勢力に抗して、ピストン１７および支持部２７を後退移動させ、支持部２７の傾斜面部２７ａの前端部を球状体２８に到達させる。この過程で、球状体２８が半径方向の内側に移動して係合部材３１の係合面３１ａから離脱し、タイヤ成型ドラム１３が駆動軸１１から取り外し可能になる。   On the other hand, when removing the tire molding drum 13 from the drive shaft 11, air is discharged from the rear of the cylinder chamber 14 through the first air supply / exhaust hole 25, and air is discharged from the front of the cylinder chamber 14 through the second air supply / exhaust hole 26. By supplying, the piston 17 and the support portion 27 are moved backward against the forward urging force of the coil spring 30, and the front end portion of the inclined surface portion 27 a of the support portion 27 reaches the spherical body 28. In this process, the spherical body 28 moves inward in the radial direction and is detached from the engagement surface 31 a of the engagement member 31, so that the tire molding drum 13 can be detached from the drive shaft 11.

以上説明したように、本実施形態によるタイヤ成型ドラム連結部材１０およびタイヤ成型機１によれば、シリンダ室１４へエアを給排してピストン１７を往復動させると、タイヤ成型ドラム１３が駆動軸１１に着脱されるように構成されているので、タイヤ成型ドラム１３を駆動軸１１に容易に着脱することができる。
またこのように、シリンダ室１４へエアを給排してピストン１７を往復動させれば、タイヤ成型ドラム１３が駆動軸１１に着脱されることから、例えばボルト締結作業等といった人手による作業を最小限に抑えることもできる。 As described above, according to the tire molding drum connecting member 10 and the tire molding machine 1 according to the present embodiment, when air is supplied to and discharged from the cylinder chamber 14 and the piston 17 is reciprocated, the tire molding drum 13 is driven. 11, the tire molding drum 13 can be easily attached to and detached from the drive shaft 11.
Further, when air is supplied to and discharged from the cylinder chamber 14 and the piston 17 is reciprocated as described above, the tire molding drum 13 is attached to and detached from the drive shaft 11, so that manual work such as bolt fastening work is minimized. It can also be kept to a limit.

さらに本実施形態では、ピストン１７がシリンダ室１４に前方付勢状態で収納されているので、タイヤ成型ドラム１３が駆動軸１１に連結された連結状態で、例えばシリンダ室１４とエア供給源との連通が不意に遮断された場合にも、ピストン１７を後退移動させ難くしてその位置に留め置き易くすることが可能になる。
したがって、前述の連結状態でシリンダ室１４とエア供給源との連通が不意に遮断された場合に、拡縮部材１８の球状体２８が縮径変位して係合部材３１から離脱するのを抑制することが可能になり、タイヤ成型ドラム１３が駆動軸１１から外れるのを防ぐことができる。 Furthermore, in this embodiment, since the piston 17 is housed in the cylinder chamber 14 in a forward-biased state, the tire molding drum 13 is connected to the drive shaft 11, for example, between the cylinder chamber 14 and the air supply source. Even when the communication is unexpectedly interrupted, it is possible to make it difficult to move the piston 17 backward so that it can be easily retained in that position.
Therefore, when the communication between the cylinder chamber 14 and the air supply source is unexpectedly interrupted in the above-mentioned connected state, the spherical body 28 of the expansion / contraction member 18 is prevented from being displaced from the diameter and being detached from the engagement member 31. Therefore, the tire molding drum 13 can be prevented from being detached from the drive shaft 11.

また、前述したように、ピストン１７が前記軸線Ｏ方向に往復動すると、支持部２７がガイド筒部２３の内周面上を摺動し、かつ傾斜面部２７ａが球状体２８に摺接することで、この球状体２８が半径方向に移動するように構成されているので、構造を複雑にすることなく、タイヤ成型ドラム１３を駆動軸１１に容易に着脱することができる。   As described above, when the piston 17 reciprocates in the direction of the axis O, the support portion 27 slides on the inner peripheral surface of the guide tube portion 23, and the inclined surface portion 27 a slides on the spherical body 28. Since the spherical body 28 is configured to move in the radial direction, the tire molding drum 13 can be easily attached to and detached from the drive shaft 11 without complicating the structure.

さらに、前述の連結状態で、例えばシリンダ室１４とエア供給源との連通が不意に遮断された場合に、ピストン１７および支持部２７が後退移動しようとしても、支持部２７の平滑面部２７ｂ上の球状体２８からは、この平滑面部２７ｂに半径方向の力しか加わらないので、支持部２７の平滑面部２７ｂが球状体２８を後方に通過し難くすることが可能になり、支持部２７の傾斜面部２７ａが球状体２８に到達するのを防ぐことができる。これにより、前述の連結状態でシリンダ室２４とエア供給源との連通が不意に遮断された場合に、支持部２７およびピストン１７が後退移動するのを確実に抑えることができる。
またこのように、支持部２７の外周面に平滑面部２７ｂが形成されていることから、前述の連結状態における球状体２８および支持部２７の前記軸線Ｏ方向の相対的な位置を容易に決めることができる。 Further, in the above-described connected state, for example, when the communication between the cylinder chamber 14 and the air supply source is unexpectedly interrupted, even if the piston 17 and the support portion 27 try to move backward, the smooth surface portion 27b of the support portion 27 is Since only a radial force is applied to the smooth surface portion 27b from the spherical body 28, the smooth surface portion 27b of the support portion 27 can hardly pass the spherical body 28 rearward, and the inclined surface portion of the support portion 27 can be prevented. 27a can be prevented from reaching the spherical body 28. Thereby, when the communication between the cylinder chamber 24 and the air supply source is unexpectedly interrupted in the above-described connected state, the support portion 27 and the piston 17 can be reliably prevented from moving backward.
Further, since the smooth surface portion 27b is formed on the outer peripheral surface of the support portion 27 as described above, it is possible to easily determine the relative positions of the spherical body 28 and the support portion 27 in the axis O direction in the above-described connected state. Can do.

さらに、第１嵌合筒２１の内径および第２嵌合筒３３の外径がそれぞれ、前方から後方に向かうに従い漸次縮径しているので、前述の連結状態で、タイヤ成型ドラム１３の自重による垂れ下がりを生じ難くすることが可能になるとともに、タイヤ成型ドラム１３の軸線と駆動軸１１の軸線とを容易かつ高精度に合わせることができる。
また、第１連結体１５および第２連結体１６それぞれにおいて、前記軸線Ｏ方向で互いに対向する対向面同士の間に、隙間が設けられているので、タイヤ成型ドラム１３を駆動軸１１に連結するときに、例えば、タイヤ成型ドラム１３の軸線と駆動軸１１の軸線とがずれた状態で前記対向面同士が当接するのを抑制することが可能になり、これら１３、１１の両軸線を容易かつ確実に合わせることができる。 Further, since the inner diameter of the first fitting cylinder 21 and the outer diameter of the second fitting cylinder 33 are gradually reduced from the front toward the rear, respectively, due to the weight of the tire molding drum 13 in the aforementioned connected state. It is possible to make it difficult for the sagging to occur, and the axis of the tire molding drum 13 and the axis of the drive shaft 11 can be easily and accurately aligned.
Further, in each of the first connecting body 15 and the second connecting body 16, a gap is provided between the opposing surfaces facing each other in the axis O direction, so that the tire molding drum 13 is connected to the drive shaft 11. Sometimes, for example, the opposed surfaces can be prevented from coming into contact with each other in a state where the axis of the tire molding drum 13 and the axis of the drive shaft 11 are deviated from each other. It can be adjusted reliably.

さらに本実施形態では、駆動軸１１およびタイヤ成型ドラム１３に、互いに噛合うクラッチ部材３５、３６が各別に配設されるとともに、駆動軸１１に、この駆動軸１１に配設されたクラッチ部材３５を前方に向けて付勢する付勢手段３７が配設されているので、タイヤ成型ドラム１３を駆動軸１１に連結するに際し、これらのタイヤ成型ドラム１３および駆動軸１１の相対的な前記軸線Ｏ回りの位置を容易かつ確実に合わせることができる。   Further, in the present embodiment, clutch members 35, 36 that mesh with the drive shaft 11 and the tire molding drum 13 are disposed separately, and the clutch member 35 disposed on the drive shaft 11 is disposed on the drive shaft 11. Since the urging means 37 that urges the tire toward the front is disposed, when the tire molding drum 13 is coupled to the drive shaft 11, the relative axis line O of the tire molding drum 13 and the drive shaft 11 is determined. The surrounding position can be easily and reliably adjusted.

なお、本発明の技術的範囲は前記実施の形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。   The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

例えば、前記実施形態では、ピストン１７を前方に付勢する手段としてコイルスプリング３０を採用したが、これに限らず適宜変更してもよく、また、ピストン１７は前方に付勢しなくてもよい。
さらに、拡縮部材１８は前記実施形態に限らず適宜変更してもよく、また支持部２７の外周面に平滑面部２７ｂは形成しなくてもよい。
さらに、タイヤ成型ドラム１３が駆動軸１１に連結された状態で、球状体２８は、前記実施形態に限らず例えば、支持部２７の外周面において平滑面部２７ｂより後方に位置する部分に載置されてもよい。
また、支持部２７の外周面において、平滑面部２７ｂと摺接面部２７ｃとの連結部分は、前記実施形態に限らず例えば、前方を向く垂直面、あるいは前方から後方に向かうに従い漸次、傾斜面部２７ａよりも急峻に拡径された傾斜面等としてもよい。 For example, in the above embodiment, the coil spring 30 is employed as means for urging the piston 17 forward. However, the present invention is not limited to this and may be changed as appropriate, and the piston 17 may not be urged forward. .
Furthermore, the expansion / contraction member 18 is not limited to the above-described embodiment, and may be appropriately changed, and the smooth surface portion 27 b may not be formed on the outer peripheral surface of the support portion 27.
Further, in a state in which the tire molding drum 13 is connected to the drive shaft 11, the spherical body 28 is not limited to the above-described embodiment, and is placed, for example, on a portion located behind the smooth surface portion 27 b on the outer peripheral surface of the support portion 27. May be.
In addition, the connecting portion between the smooth surface portion 27b and the slidable contact surface portion 27c on the outer peripheral surface of the support portion 27 is not limited to the above-described embodiment. For example, the inclined surface portion 27a gradually increases from the front surface to the front surface or from the front to the rear. It is good also as the inclined surface etc. which were diameter-expanded more steeply.

さらに、第１嵌合筒２１および第２嵌合筒３３は設けなくてもよく、また、クラッチ部材３５、３６は設けなくてもよい。
さらに、第１連結体１５および第２連結体１６それぞれにおいて、前記軸線Ｏ方向に沿って互いに対向する対向面同士の間に隙間を設けたが、互いに当接させてもよい。
また、前記実施形態では、駆動軸１１に配設されたクラッチ部材３５を前方に付勢する付勢手段３７としてコイルスプリングを示したが、これに限らず適宜変更してもよい。
さらに、前記実施形態では、第１連結体１５を駆動軸１１に装着し、第２連結体１６をタイヤ成型ドラム１３に装着したが、これとは逆に、第１連結体１５をタイヤ成型ドラム１３に装着し、第２連結体１６を駆動軸１１に装着してもよい。
また、拡縮部材１８の拡径変位時および縮径変位時の別を問わず常に、球状体２８をガイド筒部２３の外周面から半径方向の外側に突出させてもよい。 Furthermore, the first fitting cylinder 21 and the second fitting cylinder 33 may not be provided, and the clutch members 35 and 36 may not be provided.
Further, in each of the first connecting body 15 and the second connecting body 16, a gap is provided between the opposing surfaces facing each other along the axis O direction, but they may be brought into contact with each other.
In the above embodiment, the coil spring is shown as the biasing means 37 for biasing the clutch member 35 disposed on the drive shaft 11 forward.
Furthermore, in the said embodiment, although the 1st connection body 15 was mounted | worn with the drive shaft 11, and the 2nd connection body 16 was mounted | worn with the tire molding drum 13, on the contrary, the 1st connection body 15 was mounted | worn with the tire molding drum. 13 and the second connecting body 16 may be attached to the drive shaft 11.
Further, the spherical body 28 may always protrude outward in the radial direction from the outer peripheral surface of the guide cylinder portion 23 regardless of whether the expansion / contraction member 18 is expanded or contracted.

その他、本発明の趣旨を逸脱しない範囲で、前記した実施の形態における構成要素を周知の構成要素に置き換えることは適宜可能であり、また、前記した変形例を適宜組み合わせてもよい。   In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with well-known constituent elements without departing from the gist of the present invention, and the above-described modified examples may be appropriately combined.

タイヤ成型ドラムを駆動軸に容易に着脱することができる。   The tire molding drum can be easily attached to and detached from the drive shaft.

１ タイヤ成型機
１０ タイヤ成型ドラム連結部材
１１ 駆動軸
１２ 成型機本体
１３ タイヤ成型ドラム
１４ シリンダ室
１５ 第１連結体
１６ 第２連結体
１７ ピストン
１８ 拡縮部材
２１ 第１嵌合筒
２３ ガイド筒部
２３ａ 案内孔
２７ 支持部
２７ａ 傾斜面部
２７ｂ 平滑面部
２８ 球状体
３１ 係合部材
３１ａ 係合面
３３ 第２嵌合筒
３５、３６ クラッチ部材
３７ 付勢手段
Ｏ 軸線 DESCRIPTION OF SYMBOLS 1 Tire molding machine 10 Tire molding drum connection member 11 Drive shaft 12 Molding machine main body 13 Tire molding drum 14 Cylinder chamber 15 1st connection body 16 2nd connection body 17 Piston 18 Expansion / contraction member 21 1st fitting cylinder 23 Guide cylinder part 23a Guide hole 27 Support portion 27a Inclined surface portion 27b Smooth surface portion 28 Spherical body 31 Engaging member 31a Engaging surface 33 Second fitting cylinder 35, 36 Clutch member 37 Energizing means O Axis line

Claims (8)

軸線回りに回転可能に支持された駆動軸にタイヤ成型ドラムを着脱自在に連結するタイヤ成型ドラム連結部材であって、
駆動軸およびタイヤ成型ドラムのうちのいずれか一方に装着される筒状の第１連結体、および他方に装着される筒状の第２連結体を備え、
前記第１連結体は、
シリンダ室に収納され、かつ該シリンダ室へのエアの給排により前記軸線方向に往復動するピストンと、
該ピストンに連係され該ピストンの往復動に伴って半径方向に拡縮変位させられる拡縮部材と、を備え、
前記第２連結体は、
前記拡縮部材を半径方向の外側から囲繞した状態で、前記ピストンが前進移動して前記拡縮部材が拡径変位したときに、該拡縮部材が係合することにより、前記タイヤ成型ドラムが前記駆動軸側に引き寄せられる係合部材を備えていることを特徴とするタイヤ成型ドラム連結部材。 A tire molding drum coupling member that removably couples a tire molding drum to a drive shaft that is rotatably supported about an axis,
A cylindrical first connecting body mounted on one of the drive shaft and the tire molding drum, and a cylindrical second connecting body mounted on the other;
The first connector is
A piston housed in a cylinder chamber and reciprocating in the axial direction by supplying and discharging air to the cylinder chamber;
An expansion / contraction member linked to the piston and expanded / contracted in the radial direction as the piston reciprocates,
The second connector is
With the expansion / contraction member surrounded from the outside in the radial direction, when the piston moves forward and the expansion / contraction member expands and displaces, the expansion / contraction member engages, so that the tire molding drum becomes the drive shaft. A tire molding drum connecting member comprising an engaging member that is pulled toward the side. 請求項１記載のタイヤ成型ドラム連結部材であって、
前記ピストンはシリンダ室に前方付勢状態で収納されていることを特徴とするタイヤ成型ドラム連結部材。 The tire molding drum connecting member according to claim 1,
A tire molding drum connecting member, wherein the piston is housed in a cylinder chamber in a forward biased state. 請求項１または２に記載のタイヤ成型ドラム連結部材であって、
前記ピストンには、前記シリンダ室から前方に突出する支持部が連結され、
前記拡縮部材は、半径方向の内側に前記支持部が前記軸線方向に摺動自在に嵌合されるとともに、半径方向に貫通する案内孔が周方向に間隔をあけて複数形成されたガイド筒部と、前記案内孔内に半径方向に移動自在に嵌合され、かつガイド筒部の外周面から半径方向の外側に突出可能に配設された球状体と、を備え、
前記支持部の外周面において前記球状体に摺接する部分には、前方に向かうに従い漸次縮径された傾斜面部が形成され、
前記係合部材には、前方から後方に向かうに従い漸次縮径し、かつ拡径変位した前記拡縮部材の球状体が前方から係合する係合面が形成されていることを特徴とするタイヤ成型ドラム連結部材。 The tire molding drum connecting member according to claim 1 or 2,
A support portion protruding forward from the cylinder chamber is connected to the piston,
The expansion / contraction member has a guide tube portion in which the support portion is slidably fitted in the axial direction inside in the radial direction and a plurality of guide holes penetrating in the radial direction are formed at intervals in the circumferential direction. And a spherical body that is fitted in the guide hole so as to be movable in the radial direction, and is arranged so as to protrude outward in the radial direction from the outer peripheral surface of the guide cylinder portion,
An inclined surface portion that is gradually reduced in diameter toward the front is formed in a portion that is in sliding contact with the spherical body on the outer peripheral surface of the support portion,
The tire molding is characterized in that the engagement member is formed with an engagement surface that gradually decreases in diameter from the front toward the rear and engages the spherical body of the expansion / contraction member that has been expanded and displaced from the front. Drum connecting member. 請求項３記載のタイヤ成型ドラム連結部材であって、
前記支持部の外周面において、前記傾斜面部より後方に位置しかつ前記ガイド筒部の内周面が摺接する摺接面部と、前記傾斜面部と、の間に位置する部分には、前記軸線方向に沿って延在しかつ外径が前記摺接面部より小径の平滑面部が形成され、
前記タイヤ成型ドラムが駆動軸に連結された状態で、前記球状体は、前記支持部の外周面において、前記平滑面部、若しくは前記平滑面部より後方に位置する部分に載置されることを特徴とするタイヤ成型ドラム連結部材。 The tire molding drum connecting member according to claim 3,
In the outer peripheral surface of the support portion, the portion positioned between the inclined surface portion and the sliding surface portion that is located behind the inclined surface portion and the inner peripheral surface of the guide tube portion is in sliding contact with the axial direction A smooth surface portion extending along the outer diameter and having a smaller diameter than the sliding contact surface portion is formed,
In a state where the tire molding drum is coupled to a drive shaft, the spherical body is placed on the smooth surface portion or a portion located behind the smooth surface portion on the outer peripheral surface of the support portion. Tire molding drum connecting member. 請求項１から４のいずれか１項に記載のタイヤ成型ドラム連結部材であって、
前記第１連結体は、前記ピストンが前記軸線方向に摺動自在に外嵌されるとともに、内径が前方から後方に向かうに従い漸次縮径された第１嵌合筒を備え、
前記第２連結体は、前記第１嵌合筒内に離脱自在に嵌合されるとともに、外径が前方から後方に向かうに従い漸次縮径された第２嵌合筒を備えることを特徴とするタイヤ成型ドラム連結部材。 The tire molding drum connecting member according to any one of claims 1 to 4,
The first coupling body includes a first fitting cylinder in which the piston is slidably fitted in the axial direction and the inner diameter is gradually reduced from the front toward the rear,
The second connecting body includes a second fitting cylinder that is detachably fitted into the first fitting cylinder and that has an outer diameter that gradually decreases from the front toward the rear. Tire molding drum connecting member. 請求項１から５のいずれか１項に記載のタイヤ成型ドラム連結部材であって、
前記第１連結体および第２連結体それぞれにおいて、前記軸線方向に沿って互いに対向する対向面同士の間には、隙間が設けられていることを特徴とするタイヤ成型ドラム連結部材。 The tire molding drum connecting member according to any one of claims 1 to 5,
In each of the first connecting body and the second connecting body, a gap is provided between opposing surfaces facing each other along the axial direction. 軸線回りに回転可能に支持された駆動軸を有する成型機本体と、
前記駆動軸に着脱自在に連結されたタイヤ成型ドラムと、を備えるタイヤ成型機であって、
前記タイヤ成型ドラムは、請求項１から６のいずれか１項に記載のタイヤ成型ドラム連結部材を介して前記駆動軸に連結されていることを特徴とするタイヤ成型機。 A molding machine body having a drive shaft supported rotatably around an axis;
A tire molding drum that is detachably connected to the drive shaft,
The tire molding machine, wherein the tire molding drum is coupled to the drive shaft via the tire molding drum coupling member according to any one of claims 1 to 6. 請求項７記載のタイヤ成型機であって、
前記駆動軸およびタイヤ成型ドラムには、互いが噛合うことでこれら駆動軸およびタイヤ成型ドラムの相対的な前記軸線回りの位置が決められるクラッチ部材が各別に配設され、
これら駆動軸およびタイヤ成型ドラムのうちのいずれか一方には、該一方に配設された前記クラッチ部材を他方に向けて付勢する付勢手段が配設されていることを特徴とするタイヤ成型機。 The tire molding machine according to claim 7,
The drive shaft and the tire molding drum are each provided with a clutch member that determines the relative positions of the drive shaft and the tire molding drum around the axis by meshing each other.
One of the drive shaft and the tire molding drum is provided with a biasing means for biasing the clutch member disposed on the one toward the other. Machine.
JP2010116419A 2010-05-20 2010-05-20 Tire molding drum connecting member and tire molding machine Expired - Fee Related JP5544218B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016016749A1 (en) * 2014-07-29 2016-02-04 Pirelli Tyre S.P.A. Apparatus and process for building tyres for vehicle wheels

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0172321U (en) * 1987-11-04 1989-05-16
JP2001232693A (en) * 2000-02-24 2001-08-28 Hama Rubber Engineering Kk Removing device for tire molding drum
JP2002370291A (en) * 2001-06-15 2002-12-24 Bridgestone Corp Method for mounting rigid body having hole on shaft, apparatus for mounting rigid body having hole, and tire manufacturing system
JP2003200430A (en) * 2002-01-08 2003-07-15 Mitsubishi Heavy Ind Ltd Mold clamp device for tire vulcanizing machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0172321U (en) * 1987-11-04 1989-05-16
JP2001232693A (en) * 2000-02-24 2001-08-28 Hama Rubber Engineering Kk Removing device for tire molding drum
JP2002370291A (en) * 2001-06-15 2002-12-24 Bridgestone Corp Method for mounting rigid body having hole on shaft, apparatus for mounting rigid body having hole, and tire manufacturing system
JP2003200430A (en) * 2002-01-08 2003-07-15 Mitsubishi Heavy Ind Ltd Mold clamp device for tire vulcanizing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016016749A1 (en) * 2014-07-29 2016-02-04 Pirelli Tyre S.P.A. Apparatus and process for building tyres for vehicle wheels

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