JP4967461B2 - Pressure measurement method for tire components - Google Patents

Pressure measurement method for tire components Download PDF

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JP4967461B2
JP4967461B2 JP2006156138A JP2006156138A JP4967461B2 JP 4967461 B2 JP4967461 B2 JP 4967461B2 JP 2006156138 A JP2006156138 A JP 2006156138A JP 2006156138 A JP2006156138 A JP 2006156138A JP 4967461 B2 JP4967461 B2 JP 4967461B2
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pressure
constituent member
tire constituent
tire
bladder
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JP2007320287A (en
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有二 佐藤
茂 加々美
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Yokohama Rubber Co Ltd
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Yokohama Rubber Co Ltd
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Description

本発明は、グリーンタイヤを成形する際にブラダーにより圧着するタイヤ構成部材に加わる圧力を測定する方法に関し、さらに詳しくは、ブラダーにより押圧変形させたタイヤ構成部材の変形を阻害することなく、タイヤ構成部材に加わる圧力を測定することができるタイヤ構成部材の圧力測定方法に関する。   The present invention relates to a method for measuring a pressure applied to a tire constituent member that is pressure-bonded by a bladder when forming a green tire, and more particularly, a tire configuration without inhibiting deformation of the tire constituent member that is pressed and deformed by a bladder. The present invention relates to a pressure measuring method for a tire constituent member capable of measuring a pressure applied to the member.

タイヤの製造工程において、ブラダーをインフレートして第１タイヤ構成部材を押圧変形させ、第２タイヤ構成部材に圧着する工程があり、例えば、成形ドラムに巻き付けたカーカス層の端部をブラダーにより折り返して成形ドラムにセットしたビードコアとビードフィラーとの組立体に圧着する工程がある。また、左右のビードコア間にカーカス層を延設した円筒状の第１成形体をブラダーにより膨径して、ベルト層の外周側にトレッドゴム層を配置した円筒状の第２成形体の内周面に圧着する工程がある。   In the manufacturing process of the tire, there is a step of inflating the bladder to press and deform the first tire constituent member and crimping to the second tire constituent member. For example, the end portion of the carcass layer wound around the forming drum is folded by the bladder. There is a step of pressure bonding to the assembly of the bead core and the bead filler set on the molding drum. In addition, the cylindrical first molded body in which a carcass layer is extended between the left and right bead cores is expanded by a bladder, and the inner periphery of the cylindrical second molded body in which a tread rubber layer is disposed on the outer peripheral side of the belt layer. There is a process of crimping to the surface.

このようにブラダーを使用して圧着する工程では、圧着するタイヤ構成部材が大きく変形する。そのため、ブラダーにより押圧し過ぎると、圧着するタイヤ構成部材が必要とする以上に変形して肉厚変動が生じ、それがタイヤ品質に悪影響を与える。そこで、このように大きく変形するタイヤ構成部材に加わる圧力を知ることは、タイヤ品質を良好にする上で極めて有効である。   Thus, in the process of crimping using a bladder, the tire constituent member to be crimped is greatly deformed. For this reason, if the pressure is excessively applied by the bladder, the tire constituent member to be pressure-bonded is deformed more than necessary, resulting in a variation in thickness, which adversely affects the tire quality. Thus, knowing the pressure applied to the tire constituent member that is greatly deformed in this way is extremely effective in improving the tire quality.

従来、タイヤ構成部材間、例えば折り返されるカーカス層の端部とビードフィラーとの間の接触圧力を測定する方法として、センサマットを使用する方法が提案されている（例えば、特許文献１参照）。しかし、センサマットをブラダーにより大きく押圧変形させるタイヤ構成部材に使用すると、その変形に追従するのが難しいのでタイヤ構成部材の変形を阻害する。そのため、グリーンタイヤを成形する状態と同じ状態での圧力測定ができないという問題がある。
特開２００２−６７１８３号公報 Conventionally, a method using a sensor mat has been proposed as a method for measuring contact pressure between tire constituent members, for example, an end portion of a folded carcass layer and a bead filler (see, for example, Patent Document 1). However, if the sensor mat is used for a tire constituent member that is greatly deformed by a bladder, it is difficult to follow the deformation, so that the deformation of the tire constituent member is hindered. Therefore, there is a problem that pressure measurement cannot be performed in the same state as the state of forming a green tire.
JP 2002-67183 A

本発明の目的は、ブラダーにより押圧変形させるタイヤ構成部材の変形を阻害することなく、タイヤ構成部材に加わる圧力を測定することが可能なタイヤ構成部材の圧力測定方法を提供するものである。   An object of the present invention is to provide a pressure measuring method for a tire constituent member capable of measuring the pressure applied to the tire constituent member without inhibiting the deformation of the tire constituent member that is pressed and deformed by a bladder.

上記目的を達成する本発明のタイヤ構成部材の圧力測定方法は、インフレートしたブラダーにより第１タイヤ構成部材を押圧変形させて第２タイヤ構成部材に圧着した際の、前記ブラダーと前記第１タイヤ構成部材との間の圧力を測定するタイヤ構成部材の圧力測定方法であって、前記ブラダーが押圧する前記第１タイヤ構成部材の押圧面及び／または前記ブラダーの外表面の所定の位置に個々に独立した複数の圧力センサーを間隔をあけて配置した後、前記ブラダーをインフレートして前記第１タイヤ構成部材を押圧変形させて前記第２タイヤ構成部材に圧着する一方、前記複数の圧力センサーにより前記ブラダーと前記第１タイヤ構成部材との間の接触圧力を測定することを特徴とする。 The method for measuring a pressure of a tire constituent member of the present invention that achieves the above object is the bladder and the first tire when the first tire constituent member is pressed and deformed by an inflated bladder and is crimped to the second tire constituent member. A method for measuring a pressure of a tire constituent member for measuring a pressure between the constituent members, wherein the pressure is individually applied to a predetermined position on a pressing surface of the first tire constituent member and / or an outer surface of the bladder pressed by the bladder. After disposing a plurality of independent pressure sensors at an interval , the bladder is inflated to press-deform the first tire constituent member to be crimped to the second tire constituent member, while the plurality of pressure sensors A contact pressure between the bladder and the first tire constituent member is measured.

本発明の他のタイヤ構成部材の圧力測定方法は、インフレートしたブラダーにより第１タイヤ構成部材を押圧変形させ第２タイヤ構成部材に圧着した際の、前記第１タイヤ構成部材と前記第２タイヤ構成部材との間の圧力を測定するタイヤ構成部材の圧力測定方法であって、前記第１タイヤ構成部材の圧着面及び／または前記第２タイヤ構成部材の被圧着面の所定の位置に個々に独立した複数の圧力センサーを間隔をあけて配置した後、前記ブラダーをインフレートして前記第１タイヤ構成部材を押圧変形させて前記第２タイヤ構成部材に圧着する一方、前記複数の圧力センサーにより前記第１タイヤ構成部材と前記第２タイヤ構成部材との間の接触圧力を測定することを特徴とする。 According to another method of measuring the pressure of the tire constituent member of the present invention, the first tire constituent member and the second tire when the first tire constituent member is pressed and deformed by an inflated bladder and pressed against the second tire constituent member. A method for measuring a pressure of a tire constituent member that measures a pressure between the constituent members, wherein the pressure is measured individually on a predetermined position of a pressure-bonding surface of the first tire constituent member and / or a pressure-bonded surface of the second tire constituent member. After disposing a plurality of independent pressure sensors at an interval , the bladder is inflated to press-deform the first tire constituent member to be crimped to the second tire constituent member, while the plurality of pressure sensors A contact pressure between the first tire constituent member and the second tire constituent member is measured.

本発明の更に他のタイヤ構成部材の圧力測定方法は、左右のビードコア間にカーカス層を延設した円筒状の第１成形体からなる第１タイヤ構成部材をブラダーを用いることなく内側に供給した加圧媒体により直接押圧変形させ、ベルト層の外周側にトレッドゴム層を配置した円筒状の第２成形体からなる第２タイヤ構成部材に圧着した際の、前記第１タイヤ構成部材と前記第２タイヤ構成部材との間の圧力を測定するタイヤ構成部材の圧力測定方法であって、前記第１タイヤ構成部材の圧着面及び／または前記第２タイヤ構成部材の被圧着面の所定の位置に個々に独立した複数の圧力センサーを間隔をあけて配置した後、前記加圧媒体をインフレートして前記第１タイヤ構成部材を押圧変形させて前記第２タイヤ構成部材に圧着する一方、前記複数の圧力センサーにより前記第１タイヤ構成部材と前記第２タイヤ構成部材との間の接触圧力を測定することを特徴とする。 In another tire measuring member pressure measuring method according to the present invention, a first tire constituent member made of a cylindrical first molded body in which a carcass layer is extended between left and right bead cores is supplied to the inside without using a bladder. When the first tire constituent member and the first tire constituent member are press-deformed directly with a pressure medium and are crimped to a second tire constituent member comprising a cylindrical second molded body in which a tread rubber layer is disposed on the outer peripheral side of the belt layer. A method for measuring a pressure of a tire constituent member that measures a pressure between two tire constituent members, at a predetermined position on a pressure-bonding surface of the first tire constituent member and / or a pressure-bonded surface of the second tire constituent member. after spaced a plurality of pressure sensors independent individually, while crimping the pressurizing medium to the second tire component member and inflated to press deform the first tire component, before And measuring the contact pressure between the plurality of pressure sensors and said first tire component member and the second tire component.

上述した本発明によれば、インフレートしたブラダー等により押圧されて第１タイヤ構成部材が大きく変形しても、圧力センサーが個々に独立して配置されているのでセンサマットのように第１タイヤ構成部材の変形を大きく阻害することがないため、グリーンタイヤを成形する状態に近づけた状態で、第１タイヤ構成部材に加わる圧力を測定することが可能になる。その結果、得られた圧力データに基づいて供給する加圧媒体の圧力やブラダーの構造等を適宜選択することで、圧着する第１タイヤ構成部材が必要以上に変形するのを回避して肉厚変動を抑制することができる。   According to the present invention described above, even if the first tire constituent member is greatly deformed by being pressed by an inflated bladder or the like, the pressure sensors are individually arranged independently, so that the first tire is like a sensor mat. Since deformation of the constituent member is not significantly hindered, it is possible to measure the pressure applied to the first tire constituent member in a state close to the state in which the green tire is molded. As a result, by appropriately selecting the pressure of the pressurized medium to be supplied based on the obtained pressure data, the structure of the bladder, etc., it is possible to avoid the first tire constituent member to be crimped from being deformed more than necessary and Variations can be suppressed.

以下、本発明の実施の形態について添付の図面を参照しながら詳細に説明する。
図１は本発明のタイヤ構成部材の圧力測定方法の一実施形態を示し、１は成形ドラム、２はブラダー、３は未加硫のカーカス層（第１タイヤ構成部材）、４はビードコア５Ａの外周側に未加硫のビードフィラー５Ｂを配置してなるコア／フィラー組立体（第２タイヤ構成部材）である。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows an embodiment of a pressure measuring method for a tire component according to the present invention, where 1 is a forming drum, 2 is a bladder, 3 is an unvulcanized carcass layer (first tire component), and 4 is a bead core 5A. This is a core / filler assembly (second tire constituent member) in which an unvulcanized bead filler 5B is arranged on the outer peripheral side.

図１に示す本発明のタイヤ構成部材の圧力測定方法は、点線で示すようにインフレートしたブラダー２によりカーカス層３の端部３ａを押圧変形させてコア／フィラー組立体４に圧着した際の、ブラダー２とカーカス層３の端部３ａとの間の圧力を測定する方法であり、ここで使用するブラダー２は、カーカス層３の端部３ａをターンアップする（折り返す）ためのブラダーである。   The method for measuring the pressure of the tire constituent member of the present invention shown in FIG. 1 is performed when the end portion 3a of the carcass layer 3 is pressed and deformed by the inflated bladder 2 as shown by the dotted line and is crimped to the core / filler assembly 4. In this method, the pressure between the bladder 2 and the end portion 3a of the carcass layer 3 is measured. The bladder 2 used here is a bladder for turning up (turning back) the end portion 3a of the carcass layer 3. .

この方法では、先ず、成形ドラム１に巻き付けられたカーカス層３の端部３ａのブラダー２が押圧する押圧面３ｘに、個々に独立した複数の圧力センサー６を所定の間隔で測定する位置に貼り付ける。   In this method, first, a plurality of independent pressure sensors 6 are pasted on the pressing surface 3x pressed by the bladder 2 at the end portion 3a of the carcass layer 3 wound around the forming drum 1 at a position to be measured at a predetermined interval. wear.

ここで使用する圧力センサー６としては、ブラダー２が伸びて変形するため、その変形を許容できるものがよく、例えば、図２に示すように、可撓性を有する樹脂製の配線基板７上に検出素子として感圧導電ゴム８を配置した圧力センサーを好ましく挙げることができる。感圧導電ゴム８は円板状に形成するのがよく、その寸法としては、ゴムの変形速度を考慮すると、直径Ｄ５ｍｍ以上、厚さｔ０．５ｍｍ〜２．０ｍｍのものが、良好な測定精度を確保する上でよい。直径Ｄの上限値としては測定部位の精度維持の点から１５ｍｍ以下にするのがよい。以下に説明する他の実施形態で使用する圧力センサー６も同様である。   As the pressure sensor 6 used here, since the bladder 2 is stretched and deformed, it is preferable to allow the deformation, for example, on a flexible resin wiring board 7 as shown in FIG. A pressure sensor in which the pressure-sensitive conductive rubber 8 is disposed as the detection element can be preferably exemplified. The pressure-sensitive conductive rubber 8 is preferably formed in a disk shape, and the dimensions thereof are those with a diameter of D5 mm or more and a thickness of t0.5 mm to 2.0 mm with good measurement accuracy in consideration of the deformation speed of the rubber. It is good in securing. The upper limit of the diameter D is preferably 15 mm or less from the viewpoint of maintaining the accuracy of the measurement site. The same applies to pressure sensors 6 used in other embodiments described below.

カーカス層３の押圧面３ｘの所定の位置に複数の圧力センサー６を配置した後、ブラダー２内に加圧媒体を供給してブラダー２をインフレートさせる。これにより、インフレートしたブラダー２が成形ドラム１に巻き付けられたカーカス層３の端部３ａの押圧面３ｘを押圧し、点線で示すように端部３ａとビードフィラー４Ｂを変形させて、成形ドラム１にセットしたコア／フィラー組立体４とカーカス層３とを圧着する。   After a plurality of pressure sensors 6 are arranged at predetermined positions on the pressing surface 3x of the carcass layer 3, a pressure medium is supplied into the bladder 2 to inflate the bladder 2. Thereby, the inflated bladder 2 presses the pressing surface 3x of the end portion 3a of the carcass layer 3 wound around the forming drum 1, and the end portion 3a and the bead filler 4B are deformed as indicated by the dotted line, thereby forming the forming drum. The core / filler assembly 4 set to 1 and the carcass layer 3 are pressure-bonded.

他方、インフレートしたブラダー２が圧力センサー６に接触すると、接触順に圧力センサー６が測定を開始し、その測定した接触圧力に対応した電気信号が各圧力センサー６から不図示の配線を介して、コンピュータなどの演算処理装置（不図示）に入力され、そこでカーカス層３の端部３ａの各センサー６を配置した部位でのブラダー２との間の接触圧力が算出される。   On the other hand, when the inflated bladder 2 comes into contact with the pressure sensor 6, the pressure sensor 6 starts measurement in the order of contact, and an electrical signal corresponding to the measured contact pressure is sent from each pressure sensor 6 via a wiring (not shown). The pressure is inputted to an arithmetic processing unit (not shown) such as a computer, and the contact pressure with the bladder 2 at the site where each sensor 6 of the end 3a of the carcass layer 3 is arranged is calculated.

このように本発明では、カーカス層端部３ａの押圧面３ｘに個々に独立した複数の圧力センサー６を配置したので、インフレートしたブラダー２により押圧されてカーカス層端部３ａが大きく変形しても、センサマットのように圧力センサー６がその変形を大きく阻害することがない。そのため、グリーンタイヤを成形する状態に近づけた状態で、変形するカーカス層３に加わる圧力を測定することが可能になる。従って、得られた圧力データに基づいてブラダー２内に供給する加圧媒体の圧力やブラダー２の構造等を適宜選択することで、ブラダー２により圧着するカーカス層３の端部３ａが必要以上に変形するのを回避して肉厚変動を防止することができる。   As described above, in the present invention, since the plurality of independent pressure sensors 6 are arranged on the pressing surface 3x of the carcass layer end 3a, the carcass layer end 3a is greatly deformed by being pressed by the inflated bladder 2. However, unlike the sensor mat, the pressure sensor 6 does not greatly inhibit the deformation. Therefore, it is possible to measure the pressure applied to the deformed carcass layer 3 in a state close to the state in which the green tire is molded. Accordingly, by appropriately selecting the pressure of the pressurized medium supplied into the bladder 2 and the structure of the bladder 2 based on the obtained pressure data, the end portion 3a of the carcass layer 3 to be crimped by the bladder 2 is more than necessary. Deformation can be avoided and thickness variation can be prevented.

また、圧力センサー６に感圧導電ゴムを使用することで、センサー自体の大きさを小さくすることができるので、圧力センサー６によるカーカス層端部３ａの変形阻害を一層改善することができる。   Moreover, since the size of the sensor itself can be reduced by using the pressure-sensitive conductive rubber for the pressure sensor 6, the deformation inhibition of the carcass layer end 3a by the pressure sensor 6 can be further improved.

上記実施形態では、複数の圧力センサー６をカーカス層端部３ａの押圧面３ｘに配置するようにしたが、それに代えて、図３に示すように、カーカス層端部３ａの押圧面３ｘに対応するブラダー２の外表面２ａの領域２ｘに貼り付けるようにしてもよい。また、ブラダー２の外表面２ａとカーカス層３の押圧面３ｘの両者に配置することも可能である。   In the above embodiment, the plurality of pressure sensors 6 are arranged on the pressing surface 3x of the carcass layer end 3a. Instead, as shown in FIG. 3, the pressure sensors 6 correspond to the pressing surface 3x of the carcass layer end 3a. You may make it stick on the area | region 2x of the outer surface 2a of the bladder 2 to perform. It is also possible to dispose both the outer surface 2 a of the bladder 2 and the pressing surface 3 x of the carcass layer 3.

図４，５は、本発明のタイヤ構成部材の圧力測定方法の他の実施形態を示し、１１は左右のビードコア１２間に未加硫のカーカス層１３を延設した円筒状の第１成形体（第１構成部材）、１４は未加硫のベルト層１５の外周側に未加硫のトレッドゴム層１６を配置した円筒状の第２成形体（第２タイヤ構成部材）、１７は第１成形体１１を膨径して第２成形体１４に圧着してグリーンタイヤにシェーピングするためのシェーピングドラム、１８はシェーピング用のブラダーである。   4 and 5 show another embodiment of the method for measuring the pressure of tire constituent members according to the present invention, wherein 11 is a cylindrical first molded body in which an unvulcanized carcass layer 13 is extended between left and right bead cores 12. (First component member), 14 is a cylindrical second molded body (second tire component member) in which an unvulcanized tread rubber layer 16 is disposed on the outer peripheral side of the unvulcanized belt layer 15, and 17 is a first component. A shaping drum 18 for expanding the formed body 11 and crimping the formed body 11 on the second formed body 14 to shape the green tire, and 18 is a shaping bladder.

図示する第１成形体１１は、ビードコア１２とカーカス層１３に加えて、カーカス層１３の内周側に配置した未加硫のインナーライナー層１９、ビードコア１２の外周側に配置した未加硫のビードフィラー２０、及び未加硫のサイドゴム層２１とビードクッションゴム層２２を備えている。   The illustrated first molded body 11 includes an unvulcanized inner liner layer 19 disposed on the inner peripheral side of the carcass layer 13 in addition to the bead core 12 and the carcass layer 13, and an unvulcanized inner layer disposed on the outer peripheral side of the bead core 12. A bead filler 20, an unvulcanized side rubber layer 21 and a bead cushion rubber layer 22 are provided.

図４，５に示す本発明のタイヤ構成部材の圧力測定方法は、インフレートしたブラダー１８により第１成形体１１を押圧変形させ第２成形体１４に圧着した際の、ブラダー１８と第１成形体１１との間の圧力を測定する方法である。この方法では、先ず、図１に示すような成形ドラムで成形された第１成形体１１の内周面（押圧面）１１ｘに、個々に独立した複数の圧力センサー６を所定の間隔で測定する位置に貼り付ける。圧力センサー６は、シェーピングドラム１７に第１成形体１１を取り付ける前に貼り付けても、シェーピングドラム１７に第１成形体１１を取り付けた後に貼り付けてもよい。   4 and 5, the pressure measurement method for the tire constituent member according to the present invention includes the bladder 18 and the first molding when the first molded body 11 is pressed and deformed by the inflated bladder 18 and pressed against the second molded body 14. This is a method of measuring the pressure between the body 11. In this method, first, a plurality of independent pressure sensors 6 are measured at predetermined intervals on an inner peripheral surface (pressing surface) 11x of a first molded body 11 formed by a forming drum as shown in FIG. Paste in position. The pressure sensor 6 may be attached before the first molded body 11 is attached to the shaping drum 17 or may be attached after the first molded body 11 is attached to the shaping drum 17.

圧力センサー６を第１成形体１１の内周面１１ｘに配置した後、ブラダー１８内に加圧媒体を供給してブラダー１８をインフレートさせる。これにより、インフレートしたブラダー１８が第１成形体１１の内周面１１ｘを押圧し、円筒状の第１成形体１１を外周側に膨張変形（膨径）させて第２成形体１４の内周面１４ｙに圧着する。   After the pressure sensor 6 is disposed on the inner peripheral surface 11 x of the first molded body 11, the pressurized medium is supplied into the bladder 18 to inflate the bladder 18. Thereby, the inflated bladder 18 presses the inner peripheral surface 11x of the first molded body 11, and the cylindrical first molded body 11 is inflated and deformed (expanded diameter) to the outer peripheral side, so that the inside of the second molded body 14 is increased. Crimp to the peripheral surface 14y.

他方、インフレートしたブラダー１８が圧力センサー６に接触すると、接触順に圧力センサー６が測定を開始し、その測定した接触圧力に対応した電気信号が各圧力センサー６から不図示の配線を介して、コンピュータなどの演算処理装置（不図示）に入力され、そこで第１成形体１１の内周面１１ｘの各センサー６を配置した部位でのブラダー１８との間の接触圧力が算出される。   On the other hand, when the inflated bladder 18 comes into contact with the pressure sensor 6, the pressure sensor 6 starts measurement in the order of contact, and an electrical signal corresponding to the measured contact pressure is transmitted from each pressure sensor 6 via a wiring (not shown). The pressure is input to an arithmetic processing unit (not shown) such as a computer, and the contact pressure with the bladder 18 at the site where each sensor 6 is disposed on the inner peripheral surface 11x of the first molded body 11 is calculated.

このように第１成形体１１の内周面１１ｘに個々に独立した複数の圧力センサー６を配置することにより、インフレートしたブラダー１８により押圧されて第１成形体１１が大きく変形しても、センサマットのように圧力センサー６がその変形を大きく阻害することがないため、グリーンタイヤを成形する状態に近づけた状態で、第１成形体１１に加わる圧力を測定することが可能になる。従って、得られた圧力データに基づいてブラダー１８内に供給する加圧媒体の圧力やブラダー１８の構造等を適宜選択することで、ブラダー１８により圧着する第１成形体１１が必要以上に変形するのを回避することができる。   Thus, by disposing a plurality of independent pressure sensors 6 on the inner peripheral surface 11x of the first molded body 11, even if the first molded body 11 is greatly deformed by being pressed by the inflated bladder 18, Since the pressure sensor 6 does not significantly inhibit the deformation unlike the sensor mat, it is possible to measure the pressure applied to the first molded body 11 in a state close to the state of molding the green tire. Accordingly, by appropriately selecting the pressure of the pressurized medium supplied into the bladder 18 and the structure of the bladder 18 based on the obtained pressure data, the first molded body 11 to be crimped by the bladder 18 is deformed more than necessary. Can be avoided.

また、第１成形体１１の内周面１１ｘのセンター部に配置した圧力センサー６Ａにおける接触圧力が高くなり過ぎると、加硫金型にセットする際にセクター間でグリーンタイヤ（第２成形体１４のトレッド面センター部）が噛まれる不具合が発生するが、そこでの圧力を測定することで、この不具合を解消することが可能になる。   In addition, if the contact pressure in the pressure sensor 6A arranged at the center portion of the inner peripheral surface 11x of the first molded body 11 becomes too high, green tires (second molded body 14) are set between sectors when being set in the vulcanization mold. The tread surface center portion) is bitten, but by measuring the pressure there, it is possible to eliminate the problem.

また、ショルダー領域に位置する圧力センサー６Ｂにおける接触圧力が低いと、ステッチング工程（ブラダー１８により第１成形体１１を第２成形体１４に圧着した後、第２成形体１４を第１成形体１１に密着させるため、押圧ローラをタイヤ軸方向に移動させながら第２成形体１４を外周側から押圧して第１成形体１１に密着させる工程）で押圧ローラにより押圧する力が弱くなる不具合が発生するが、そこでの圧力を測定することで、この不具合を解消することができる。   Further, when the contact pressure in the pressure sensor 6B located in the shoulder region is low, the stitching step (after the first molded body 11 is pressure-bonded to the second molded body 14 by the bladder 18, the second molded body 14 is moved to the first molded body. 11, in order to make it closely contact, the second roller 14 is pressed from the outer peripheral side while moving the roller in the axial direction of the tire, and the force pressed by the roller in the first roller 11 is weakened. Although this occurs, this problem can be resolved by measuring the pressure there.

上記図４，５の実施形態では、複数の圧力センサー６を第１成形体１１の内周面１１ｘに配置するようにしたが、それに代えて、第１成形体１１の内周面１１ｘに対応するブラダー１８の外表面１８ａの領域に貼り付けるようにしてもよい。また、ブラダー１８の外表面１８ａと第１成形体１１の押圧面１１ｘの両者に配置することも可能である。   4 and 5, the plurality of pressure sensors 6 are arranged on the inner peripheral surface 11x of the first molded body 11, but instead correspond to the inner peripheral surface 11x of the first molded body 11. You may make it affix on the area | region of the outer surface 18a of the bladder 18 to do. It is also possible to dispose both the outer surface 18 a of the bladder 18 and the pressing surface 11 x of the first molded body 11.

図６は、本発明のタイヤ構成部材の圧力測定方法の更に他の実施形態を示す。この図６に示す本発明のタイヤ構成部材の圧力測定方法は、点線で示すようにインフレートしたブラダー２によりカーカス層３の端部３ａを押圧変形させてコア／フィラー組立体４に圧着した際の、カーカス層３の端部３ａとコア／フィラー組立体４との間の圧力を測定する方法である。   FIG. 6 shows still another embodiment of the pressure measuring method for tire constituent members according to the present invention. The method for measuring the pressure of the tire component according to the present invention shown in FIG. 6 is performed when the end portion 3a of the carcass layer 3 is pressed and deformed by the inflated bladder 2 as shown by the dotted line and is crimped to the core / filler assembly 4. This is a method for measuring the pressure between the end portion 3 a of the carcass layer 3 and the core / filler assembly 4.

この方法では、先ず、成形ドラム１に巻き付けられたカーカス層３の端部３ａの圧着面３ｙに、個々に独立した複数の圧力センサー６を所定の間隔で測定する位置に貼り付ける。   In this method, first, a plurality of independent pressure sensors 6 are attached to positions to be measured at predetermined intervals on the crimping surface 3y of the end portion 3a of the carcass layer 3 wound around the forming drum 1.

カーカス層３の圧着面３ｙの所定の位置に複数の圧力センサー６を配置した後、ブラダー２内に加圧媒体を供給してブラダー２をインフレートさせる。これにより、インフレートしたブラダー２が成形ドラム１に巻き付けられたカーカス層３の端部３ａを押圧し、点線で示すように端部３ａとビードフィラー５Ｂを変形させて、成形ドラム１にセットされたコア／フィラー組立体４とカーカス層３とを圧着する。   After arranging a plurality of pressure sensors 6 at predetermined positions on the crimping surface 3y of the carcass layer 3, a pressure medium is supplied into the bladder 2 to inflate the bladder 2. As a result, the inflated bladder 2 presses the end portion 3a of the carcass layer 3 wound around the forming drum 1, deforms the end portion 3a and the bead filler 5B as indicated by the dotted line, and is set on the forming drum 1. The core / filler assembly 4 and the carcass layer 3 are pressure-bonded.

他方、圧力センサー６がコア／フィラー組立体４に接触すると、接触順に圧力センサー６が測定を開始し、その測定した接触圧力に対応した電気信号が各圧力センサー６から不図示の配線を介して、コンピュータなどの演算処理装置（不図示）に入力され、そこで各センサー６を配置した部位でのカーカス層３の端部３ａとコア／フィラー組立体４との間の接触圧力が算出される。   On the other hand, when the pressure sensor 6 comes into contact with the core / filler assembly 4, the pressure sensor 6 starts measurement in the contact order, and an electric signal corresponding to the measured contact pressure is sent from each pressure sensor 6 through a wiring (not shown). Then, it is input to an arithmetic processing device (not shown) such as a computer, and the contact pressure between the end 3a of the carcass layer 3 and the core / filler assembly 4 at the site where each sensor 6 is arranged is calculated.

このようにブラダー２により大きく変形するカーカス層端部３ａの圧着面３ｙ側に個々に独立した複数の圧力センサー６を配置し、コア／フィラー組立体４との接触圧力を測定することによっても、上記と同様の効果を得ることができる。   In this way, by arranging a plurality of independent pressure sensors 6 on the crimping surface 3y side of the carcass layer end 3a that is greatly deformed by the bladder 2, and measuring the contact pressure with the core / filler assembly 4, The same effect as described above can be obtained.

図６の実施形態では、複数の圧力センサー６をカーカス層端部３ａの圧着面３ｙに配置する例を示したが、それに代えて、カーカス層端部３ａが圧着されるコア／フィラー組立体４の一方の被圧着面４ｙや、図７に示すように、カーカス層３の端部３ａと共に変形するコア／フィラー組立体４（ビードフィラー５Ｂ）の他方の被圧着面４ｚに貼り付けるようにしてもよい。また、両者に配置することも可能である。   In the embodiment of FIG. 6, the example in which the plurality of pressure sensors 6 are arranged on the crimping surface 3y of the carcass layer end 3a has been shown, but instead, the core / filler assembly 4 to which the carcass layer end 3a is crimped. As shown in FIG. 7, it is attached to the other pressure-bonded surface 4z of the core / filler assembly 4 (bead filler 5B) that deforms together with the end 3a of the carcass layer 3, as shown in FIG. Also good. It is also possible to arrange both.

図８は、本発明のタイヤ構成部材の圧力測定方法の更に他の実施形態を示す。この図８に示す本発明のタイヤ構成部材の圧力測定方法は、インフレートしたブラダー１８により第１成形体１１を押圧変形させ第２成形体１４に圧着した際の、第１成形体１１と第２成形体１４との間の圧力を測定する方法である。   FIG. 8 shows still another embodiment of the method for measuring the pressure of tire constituent members according to the present invention. The method for measuring the pressure of the tire constituent member according to the present invention shown in FIG. 8 includes the first molded body 11 and the first molded body 11 when the first molded body 11 is pressed and deformed by the inflated bladder 18 and pressed against the second molded body 14. This is a method for measuring the pressure between the two molded bodies 14.

この方法では、先ず、成形ドラムで成形された第１成形体１１の外周面（圧着面）１１ｙに、個々に独立した複数の圧力センサー６を所定の間隔で測定する位置に貼り付ける。圧力センサー６は、シェーピングドラム１７に第１成形体１１を取り付ける前に貼り付けても、シェーピングドラム１７に第１成形体１１を取り付けた後に貼り付けてもよい。   In this method, first, a plurality of independent pressure sensors 6 are attached to the outer peripheral surface (crimp surface) 11y of the first molded body 11 formed by the forming drum at positions where measurement is performed at predetermined intervals. The pressure sensor 6 may be attached before the first molded body 11 is attached to the shaping drum 17 or may be attached after the first molded body 11 is attached to the shaping drum 17.

圧力センサー６を第１成形体１１の外周面１１ｙに配置した後、ブラダー１８内に加圧媒体を供給してブラダー１８をインフレートさせる。これにより、インフレートしたブラダー１８が第１成形体１１の内周面１１ｘを押圧し、円筒状の第１成形体１１を外周側に膨張変形（膨径）させて第２成形体１４の内周面（被圧着面）１４ｙに圧着する。   After the pressure sensor 6 is disposed on the outer peripheral surface 11 y of the first molded body 11, the pressurized medium is supplied into the bladder 18 to inflate the bladder 18. Thereby, the inflated bladder 18 presses the inner peripheral surface 11x of the first molded body 11, and the cylindrical first molded body 11 is inflated and deformed (expanded diameter) to the outer peripheral side, so that the inside of the second molded body 14 is increased. It is crimped to the peripheral surface (surface to be crimped) 14y.

他方、圧力センサー６が第２成形体１４の内周面１４ｙに接触すると、接触順に圧力センサー６が測定を開始し、その測定した接触圧力に対応した電気信号が各圧力センサー６から不図示の配線を介して、コンピュータなどの演算処理装置（不図示）に入力され、そこで各センサー６を配置した部位での第１成形体１１と第２成形体１４との間の接触圧力が算出される。   On the other hand, when the pressure sensor 6 comes into contact with the inner peripheral surface 14y of the second molded body 14, the pressure sensor 6 starts measurement in the contact order, and an electric signal corresponding to the measured contact pressure is not shown from each pressure sensor 6. It is input to an arithmetic processing unit (not shown) such as a computer through wiring, and the contact pressure between the first molded body 11 and the second molded body 14 at the site where each sensor 6 is arranged is calculated. .

このようにブラダー１８により大きく変形する第１成形体１１の外周面１１ｙ側に個々に独立した複数の圧力センサー６を配置し、第２成形体１４との接触圧力を測定することによっても、上記と同様の効果を得ることができる。また、得られた圧力及び接触順のデータに基づき、ステッチング工程において押圧ローラにより押圧する圧力や移動方向を適宜選択することで、第１成形体１１と第２成形体１４との間に残留するエアを外部に効果的に排出することも可能になる。   As described above, the pressure sensors 6 that are individually independent are arranged on the outer peripheral surface 11y side of the first molded body 11 that is largely deformed by the bladder 18, and the contact pressure with the second molded body 14 is measured. The same effect can be obtained. Further, based on the obtained pressure and contact order data, the pressure and the moving direction pressed by the pressing roller in the stitching process are appropriately selected, so that the residual between the first molded body 11 and the second molded body 14 remains. It is also possible to effectively discharge the air to the outside.

図８の実施形態では、複数の圧力センサー６を第１成形体１１の外周面１１ｙに配置する例を示したが、それに代えて、第２成形体１４の内周面１４ｙに貼り付けるようにしてもよい。また、第１成形体１１の外周面１１ｙと第２成形体１４の内周面１４ｙの両者に配置するようにしてもよい。更に、図８の実施形態ではブラダー１８を用いる例を示したが、ブラダー１８を用いずに、シェーピングドラム１７に取り付けた第１成形体１１の内側に供給した加圧媒体により直接第１成形体１１を内側から押圧変形させ、第２成形体１４に圧着するようにしたものであってもよい。   In the embodiment of FIG. 8, the example in which the plurality of pressure sensors 6 are arranged on the outer peripheral surface 11 y of the first molded body 11 is shown, but instead, the pressure sensors 6 are attached to the inner peripheral surface 14 y of the second molded body 14. May be. Moreover, you may make it arrange | position on both the outer peripheral surface 11y of the 1st molded object 11, and the inner peripheral surface 14y of the 2nd molded object 14. FIG. Further, in the embodiment of FIG. 8, an example in which the bladder 18 is used is shown. However, the first molded body is directly used by the pressure medium supplied to the inside of the first molded body 11 attached to the shaping drum 17 without using the bladder 18. 11 may be pressed and deformed from the inside and crimped to the second molded body 14.

本発明において、上述した圧力センサー６は、上記実施形態では周方向において各部位でそれぞれ１つ配置する例を示すが、必要に応じて周方向の複数個所に配置するようにしてもよい。   In the present invention, the above-described embodiment shows an example in which one pressure sensor 6 is arranged at each site in the circumferential direction, but it may be arranged at a plurality of locations in the circumferential direction as necessary.

本発明のタイヤ構成部材の圧力測定方法の一実施形態の要部を示す部分断面図である。It is a fragmentary sectional view showing an important section of one embodiment of a pressure measuring method of a tire constituent member of the present invention. 図１の圧力センサーの一例を示す拡大側面図である。It is an enlarged side view which shows an example of the pressure sensor of FIG. 本発明のタイヤ構成部材の圧力測定方法の他の実施形態の要部を示す部分断面図である。It is a fragmentary sectional view which shows the principal part of other embodiment of the pressure measuring method of the tire structural member of this invention. 本発明のタイヤ構成部材の圧力測定方法の更に他の実施形態において、圧力センサーを配置した状態を示す断面図である。FIG. 6 is a cross-sectional view showing a state in which a pressure sensor is arranged in still another embodiment of a method for measuring a pressure of a tire constituent member of the present invention. 図４の本発明のタイヤ構成部材の圧力測定方法の更に他の実施形態において、ブラダーをインスレートして第１タイヤ構成部材を第２タイヤ構成部材に圧着した状態を示す断面図である。FIG. 5 is a cross-sectional view showing a state in which a bladder is insulted and a first tire constituent member is pressure-bonded to a second tire constituent member in still another embodiment of the pressure measuring method for the tire constituent member of the present invention of FIG. 4. 本発明のタイヤ構成部材の圧力測定方法の更に他の実施形態の要部を示す部分断面図である。It is a fragmentary sectional view which shows the principal part of further another embodiment of the pressure measuring method of the tire structural member of this invention. 本発明のタイヤ構成部材の圧力測定方法の更に他の実施形態の要部を示す部分断面図である。It is a fragmentary sectional view which shows the principal part of further another embodiment of the pressure measuring method of the tire structural member of this invention. 本発明のタイヤ構成部材の圧力測定方法の更に他の実施形態の要部を示す断面図である。It is sectional drawing which shows the principal part of other embodiment of the pressure measuring method of the tire structural member of this invention.

符号の説明Explanation of symbols

１ 成形ドラム
２ ブラダー
２ａ 外表面
３ カーカス層（第１タイヤ構成部材）
３ａ 端部
３ｘ 押圧面
３ｙ 圧着面
４ コア／フィラー組立体（第２タイヤ構成部材）
４ｙ，４ｚ 被圧着面
５Ａ ビードコア
５Ｂ ビードフィラー
６ 圧力センサー
８ 感圧導電ゴム
１１ 第１成形体（第１構成部材）
１１ｘ 内周面（押圧面）
１１ｙ 外周面（圧着面）
１２ ビードコア
１３ カーカス層
１４ 第２成形体（第２タイヤ構成部材）
１４ｙ 内周面（被圧着面）
１５ ベルト層
１６ トレッドゴム層
１８ ブラダー
１８ａ 外表面 DESCRIPTION OF SYMBOLS 1 Molding drum 2 Bladder 2a Outer surface 3 Carcass layer (1st tire structural member)
3a End 3x Pressing surface 3y Crimping surface 4 Core / filler assembly (second tire component)
4y, 4z surface to be bonded 5A bead core 5B bead filler 6 pressure sensor 8 pressure-sensitive conductive rubber 11 first molded body (first component)
11x Inner peripheral surface (pressing surface)
11y outer peripheral surface (crimp surface)
12 Bead core 13 Carcass layer 14 2nd molded object (2nd tire structural member)
14y Inner peripheral surface (surface to be bonded)
15 Belt layer 16 Tread rubber layer 18 Bladder 18a Outer surface

Claims (7)

インフレートしたブラダーにより第１タイヤ構成部材を押圧変形させて第２タイヤ構成部材に圧着した際の、前記ブラダーと前記第１タイヤ構成部材との間の圧力を測定するタイヤ構成部材の圧力測定方法であって、
前記ブラダーが押圧する前記第１タイヤ構成部材の押圧面及び／または前記ブラダーの外表面の所定の位置に個々に独立した複数の圧力センサーを間隔をあけて配置した後、前記ブラダーをインフレートして前記第１タイヤ構成部材を押圧変形させて前記第２タイヤ構成部材に圧着する一方、前記複数の圧力センサーにより前記ブラダーと前記第１タイヤ構成部材との間の接触圧力を測定するタイヤ構成部材の圧力測定方法。 A pressure measuring method for a tire constituent member that measures the pressure between the bladder and the first tire constituent member when the first tire constituent member is pressed and deformed by an inflated bladder and is crimped to the second tire constituent member. Because
After the bladder has been spaced a plurality of pressure sensors independent individually to a predetermined position of the pressing surface and / or outer surface of the bladder of the first tire component member for pressing, the bladder was inflated The first tire constituent member is pressed and deformed to be crimped to the second tire constituent member, and the contact pressure between the bladder and the first tire constituent member is measured by the plurality of pressure sensors. Pressure measurement method. インフレートしたブラダーにより第１タイヤ構成部材を押圧変形させ第２タイヤ構成部材に圧着した際の、前記第１タイヤ構成部材と前記第２タイヤ構成部材との間の圧力を測定するタイヤ構成部材の圧力測定方法であって、
前記第１タイヤ構成部材の圧着面及び／または前記第２タイヤ構成部材の被圧着面の所定の位置に個々に独立した複数の圧力センサーを間隔をあけて配置した後、前記ブラダーをインフレートして前記第１タイヤ構成部材を押圧変形させて前記第２タイヤ構成部材に圧着する一方、前記複数の圧力センサーにより前記第１タイヤ構成部材と前記第２タイヤ構成部材との間の接触圧力を測定するタイヤ構成部材の圧力測定方法。 A tire constituent member that measures the pressure between the first tire constituent member and the second tire constituent member when the first tire constituent member is pressed and deformed by an inflated bladder and pressed against the second tire constituent member. A pressure measuring method comprising:
After spaced a plurality of pressure sensors individually and independently in a predetermined position of the crimping surfaces of the crimping surface and / or the second tire component member of the first tire component member, the bladder was inflated The first tire constituent member is pressed and deformed to be crimped to the second tire constituent member, and the contact pressure between the first tire constituent member and the second tire constituent member is measured by the plurality of pressure sensors. A method for measuring the pressure of a tire constituent member. 前記第１タイヤ構成部材が成形ドラムに巻き付けられたカーカス層であり、前記第２タイヤ構成部材が前記成形ドラムにセットしたビードコアと該ビードコアの外周側に配置したビードフィラーからなるコア／フィラー組立体であり、前記インフレートしたブラダーにより前記カーカス層の端部を押圧変形して前記ビードフィラーに圧着する請求項１または２に記載のタイヤ構成部材の圧力測定方法。   A core / filler assembly in which the first tire component is a carcass layer wound around a molding drum, and the second tire component is composed of a bead core set on the molding drum and a bead filler disposed on the outer peripheral side of the bead core. The method for measuring a pressure of a tire constituent member according to claim 1, wherein an end portion of the carcass layer is pressed and deformed by the inflated bladder and is crimped to the bead filler. 前記第１タイヤ構成部材が左右のビードコア間にカーカス層を延設した円筒状の第１成形体であり、前記第２タイヤ構成部材がベルト層の外周側にトレッドゴム層を配置した円筒状の第２成形体であり、前記インフレートしたブラダーにより前記第１成形体を膨径して前記第２成形体の内周面に圧着する請求項１または２に記載のタイヤ構成部材の圧力測定方法。   The first tire component is a cylindrical first molded body in which a carcass layer is extended between left and right bead cores, and the second tire component is a cylindrical shape in which a tread rubber layer is disposed on the outer peripheral side of the belt layer. The method for measuring a pressure of a tire constituent member according to claim 1, wherein the pressure measuring method is a second molded body, wherein the first molded body is swelled by the inflated bladder and is pressure-bonded to an inner peripheral surface of the second molded body. . 左右のビードコア間にカーカス層を延設した円筒状の第１成形体からなる第１タイヤ構成部材をブラダーを用いることなく内側に供給した加圧媒体により直接押圧変形させ、ベルト層の外周側にトレッドゴム層を配置した円筒状の第２成形体からなる第２タイヤ構成部材に圧着した際の、前記第１タイヤ構成部材と前記第２タイヤ構成部材との間の圧力を測定するタイヤ構成部材の圧力測定方法であって、
前記第１タイヤ構成部材の圧着面及び／または前記第２タイヤ構成部材の被圧着面の所定の位置に個々に独立した複数の圧力センサーを間隔をあけて配置した後、前記加圧媒体をインフレートして前記第１タイヤ構成部材を押圧変形させて前記第２タイヤ構成部材に圧着する一方、前記複数の圧力センサーにより前記第１タイヤ構成部材と前記第２タイヤ構成部材との間の接触圧力を測定するタイヤ構成部材の圧力測定方法。 A first tire constituent member made of a cylindrical first molded body in which a carcass layer is extended between the left and right bead cores is directly pressed and deformed by a pressure medium supplied to the inside without using a bladder, and is formed on the outer peripheral side of the belt layer. Tire constituent member for measuring the pressure between the first tire constituent member and the second tire constituent member when pressure-bonded to a second tire constituent member comprising a cylindrical second molded body in which a tread rubber layer is disposed A pressure measuring method of
After spaced a plurality of pressure sensors individually and independently in a predetermined position of the crimping surfaces of the crimping surface and / or the second tire component member of the first tire component, in the pressurizing medium The first tire constituent member is pressed and deformed to be crimped to the second tire constituent member, and the contact pressure between the first tire constituent member and the second tire constituent member by the plurality of pressure sensors. A method for measuring a pressure of a tire constituent member for measuring the pressure. 前記圧力センサーを構成する検出素子が感圧導電ゴムからなる請求項１乃至５のいずれかに記載のタイヤ構成部材の圧力測定方法。   The method for measuring a pressure of a tire constituent member according to any one of claims 1 to 5, wherein the detection element constituting the pressure sensor is made of a pressure-sensitive conductive rubber. 前記感圧導電ゴムを直径５ｍｍ〜１５ｍｍ、厚さ０．５ｍｍ〜２．０ｍｍの円板状に形成した請求項６に記載のタイヤ構成部材の圧力測定方法。   The pressure measurement method for a tire constituent member according to claim 6, wherein the pressure-sensitive conductive rubber is formed in a disk shape having a diameter of 5 mm to 15 mm and a thickness of 0.5 mm to 2.0 mm.
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