JP4816232B2 - Tire vulcanization method - Google Patents

Tire vulcanization method Download PDF

Info

Publication number
JP4816232B2
JP4816232B2 JP2006134061A JP2006134061A JP4816232B2 JP 4816232 B2 JP4816232 B2 JP 4816232B2 JP 2006134061 A JP2006134061 A JP 2006134061A JP 2006134061 A JP2006134061 A JP 2006134061A JP 4816232 B2 JP4816232 B2 JP 4816232B2
Authority
JP
Japan
Prior art keywords
tire
sensor
internal pressure
rubber layer
vulcanizing method
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2006134061A
Other languages
Japanese (ja)
Other versions
JP2007301901A (en
Inventor
有二 佐藤
茂 加々美
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokohama Rubber Co Ltd
Original Assignee
Yokohama Rubber Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yokohama Rubber Co Ltd filed Critical Yokohama Rubber Co Ltd
Priority to JP2006134061A priority Critical patent/JP4816232B2/en
Publication of JP2007301901A publication Critical patent/JP2007301901A/en
Application granted granted Critical
Publication of JP4816232B2 publication Critical patent/JP4816232B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Description

本発明は、タイヤの加硫方法に関し、さらに詳しくは、タイヤの品質を改善するのに寄与するタイヤ加硫方法に関する。   The present invention relates to a tire vulcanizing method, and more particularly to a tire vulcanizing method that contributes to improving the quality of a tire.

一般に、空気入りタイヤは、加硫工程において、加硫金型内にセットしたグリーンタイヤ内に内圧を付与し、グリーンタイヤを膨張させて加硫金型内面に押圧しながら加硫するようにしている。その際に、付与した内圧の力がグリーンタイヤ内部の各タイヤ構成部材にも作用するが、その作用する内部圧力の状態により、タイヤ構成部材間のエア溜まりの状態（加硫後のタイヤ構成部材間の耐剥離性に影響）やゴム流れの状態が大きく左右され、それがタイヤ品質に影響する。   In general, in a vulcanization process, a pneumatic tire is vulcanized while applying an internal pressure to a green tire set in a vulcanization mold, inflating the green tire, and pressing the inner surface of the vulcanization mold. Yes. At that time, the applied internal pressure force also acts on each tire component inside the green tire, but depending on the state of the applied internal pressure, the state of air accumulation between the tire components (the tire component after vulcanization) Influences the resistance to peeling between the two) and the state of rubber flow greatly affects the tire quality.

従来、タイヤ品質を改善するため、加硫中のブラダー内の圧力や温度を検出するようにした技術の提案はある（例えば、特許文献１参照）が、上述したタイヤ構成部材間に作用する内部圧力に起因するタイヤ品質を効果的に改善するようにした技術の提案がなく、その提案が望まれていた。
特開２０００−７９６１６号公報 Conventionally, in order to improve tire quality, there is a proposal of a technique for detecting pressure and temperature in a bladder during vulcanization (for example, refer to Patent Document 1). There has been no proposal for a technique that effectively improves the tire quality caused by pressure, and the proposal has been desired.
JP 2000-79616 A

本発明の目的は、タイヤ構成部材間に作用する内部圧力の影響を受けるタイヤ品質の改善に寄与するタイヤ加硫方法を提供するものである。   An object of the present invention is to provide a tire vulcanizing method that contributes to improvement of tire quality affected by internal pressure acting between tire constituent members.

上記目的を達成する本発明の第１のタイヤ加硫方法は、加硫金型内にセットしたグリーンタイヤ内に内圧を付与し、該グリーンタイヤを膨張させて加硫金型内面に押圧しながら加硫する際に、グリーンタイヤのタイヤ構成部材間に設置したセンサーにより該タイヤ構成部材間に作用する内部圧力を測定することを特徴とする。   The first tire vulcanization method of the present invention that achieves the above object is to apply an internal pressure to a green tire set in a vulcanization mold, inflate the green tire and press it against the inner surface of the vulcanization mold. When vulcanizing, an internal pressure acting between the tire constituent members is measured by a sensor installed between the tire constituent members of the green tire.

本発明の第２のタイヤ加硫方法は、加硫金型内にセットしたグリーンタイヤ内に内圧を付与し、該グリーンタイヤを膨張させて加硫金型内面に押圧しながら加硫する際に、グリーンタイヤのタイヤ構成部材間の異なる複数の部位に設置した複数のセンサーにより、該タイヤ構成部材間の異なる部位に内部圧力が作用する順序を測定することを特徴とする。   In the second tire vulcanization method of the present invention, an internal pressure is applied to a green tire set in a vulcanization mold, the green tire is inflated and vulcanized while being pressed against the inner surface of the vulcanization mold. The order in which the internal pressure acts on different parts between the tire constituent members is measured by a plurality of sensors installed at different parts between the tire constituent members of the green tire.

上述した本発明の第１のタイヤ加硫方法によれば、加硫時にセンサーによりタイヤ構成部材間に作用する内部圧力を測定するので、得られた内部圧力情報に基づいて、界面におけるタイヤ構成部材のゴム流れ状態を判断することが可能になる。従って、その判断に基づき、加硫条件（加圧媒体の最大圧力や圧力分布）を適宜調整して、センサーで検出した内部圧力を所定の値にすることで、ゴム流れ状態を改善することが可能になり、それに起因するタイヤ品質を向上することができる。従って、タイヤ構成部材間に作用する内部圧力の影響を受けるタイヤ品質の改善が可能になる。   According to the above-described first tire vulcanizing method of the present invention, the internal pressure acting between the tire constituent members is measured by the sensor at the time of vulcanization, so that the tire constituent member at the interface is based on the obtained internal pressure information. It is possible to determine the rubber flow state of the. Therefore, the rubber flow condition can be improved by appropriately adjusting the vulcanization conditions (maximum pressure and pressure distribution of the pressurized medium) based on the judgment and setting the internal pressure detected by the sensor to a predetermined value. It becomes possible and the tire quality resulting from it can be improved. Accordingly, it is possible to improve the tire quality affected by the internal pressure acting between the tire constituent members.

上述した本発明の第２のタイヤ加硫方法によれば、異なる複数の部位に設置した複数のセンサーによりタイヤ構成部材間の異なる部位に内部圧力が作用する順序を測定することで、層間に残留するエアの状態を判断することが可能になる。そのため、その判断に基づき、加硫条件（加圧媒体の最大圧力や圧力分布）を変更して、エアを層間外に効果的に排出することができる。その結果、エア溜まりに起因する層間の耐剥離性を改善することが可能になり、タイヤ構成部材間に作用する内部圧力の影響を受けるタイヤ品質を改善することができる。   According to the second tire vulcanizing method of the present invention described above, the order in which the internal pressure acts on different parts between the tire constituent members is measured by a plurality of sensors installed at different parts, thereby remaining between the layers. It is possible to determine the state of air to be performed. Therefore, based on the determination, the vulcanization conditions (maximum pressure and pressure distribution of the pressurized medium) can be changed, and air can be effectively discharged out of the interlayer. As a result, it is possible to improve the delamination resistance between layers caused by air accumulation, and the tire quality affected by the internal pressure acting between the tire constituent members can be improved.

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は本発明のタイヤ加硫方法の一工程を示し、１は加硫金型、２，３は上型と下型、４はセクター、４Ｘはセクター４の内面４ａに突設した周方向溝成形突条、５は上下のビードリングである。また、６はブラダー、７はグリーンタイヤである。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows one step of the tire vulcanizing method of the present invention, where 1 is a vulcanizing mold, 2 and 3 are upper and lower molds, 4 is a sector, and 4X is a circumferential direction projecting on the inner surface 4a of the sector 4 Groove forming ridges 5 are upper and lower bead rings. Reference numeral 6 is a bladder, and 7 is a green tire.

本発明のタイヤ加硫方法は、予め内部圧力を検出するセンサー８をタイヤ構成部材間に設置したグリーンタイヤ７を成形しておく。図１に示すグリーンタイヤ７は、両ビード部７１間にタイヤ径方向に延在する補強コードをゴム層に埋設したカーカス層７２が延設され、その両端部がビード部７１に埋設したビードコア７３の周りにビードフィラー７４を挟み込むようにしてタイヤ内側から外側に折り返されている。   In the tire vulcanizing method of the present invention, a green tire 7 in which a sensor 8 for detecting internal pressure is installed between tire constituent members in advance is formed. The green tire 7 shown in FIG. 1 has a bead core 73 in which a carcass layer 72 in which a reinforcing cord extending in the tire radial direction is embedded in a rubber layer is extended between both bead portions 71 and both ends thereof are embedded in the bead portion 71. The bead filler 74 is sandwiched around the tire so as to be folded back from the inside to the outside.

トレッド部７５のカーカス層７２の外周側には、タイヤ周方向に傾斜配列した補強コードをゴム層に埋設したベルト層７６が配置してある。ベルト層７６の外周側にはトレッドゴム層７７が配置されている。サイドウォール部７８のカーカス層７２の外側には、サイドゴム層７９が設けられている。センサー８は、ベルト層７６とトレッドゴム層７７との間でタイヤ軸方向に異なる複数の部位に設置されている。センサー８は、グリーンタイヤ７を成形した後、トレッドゴム層７７を切開して設置してもよく、またグリーンタイヤ７の成形中にベルト層７６とトレッドゴム層７７との間に配置してもよい。   On the outer peripheral side of the carcass layer 72 of the tread portion 75, a belt layer 76 in which reinforcing cords inclined in the tire circumferential direction are embedded in the rubber layer is disposed. A tread rubber layer 77 is disposed on the outer peripheral side of the belt layer 76. A side rubber layer 79 is provided on the outside of the carcass layer 72 of the sidewall portion 78. The sensors 8 are installed at a plurality of portions that differ between the belt layer 76 and the tread rubber layer 77 in the tire axial direction. The sensor 8 may be installed by cutting the tread rubber layer 77 after the green tire 7 is molded, or may be disposed between the belt layer 76 and the tread rubber layer 77 during the molding of the green tire 7. Good.

センサー８を設置する部位としては、図示するように、トレッド部７５のセンター領域７５Ａと両ショルダー領域７５Ｂを好ましく挙げることができる。これらの部位に作用する内部圧力を均一的にすることで、トレッドゴム層７７の未加硫ゴムの流れを良好にすることができるからである。また、各部位に配置したセンサー８の圧力検出開始順により、ベルト層７６とトレッドゴム層７７との間に残留するエアが層間から効果的に排出されたか否かがわかるからである。   As a part where the sensor 8 is installed, a center region 75A and both shoulder regions 75B of the tread portion 75 can be preferably exemplified as illustrated. This is because by making the internal pressure acting on these parts uniform, the flow of the unvulcanized rubber in the tread rubber layer 77 can be improved. Moreover, it is because it can be known whether the air remaining between the belt layer 76 and the tread rubber layer 77 is effectively discharged from the layers by the order of the pressure detection start of the sensor 8 arranged in each part.

例えば、トレッド部７５のセンター領域７５Ａに配置したセンサー８が最初に内部圧力を検出し、次いでショルダー領域７５Ｂに配置したセンサー８が内部圧力を検出すると、ベルト層７６とトレッドゴム層７７との間の残留エアが、センター側からショルダー側に押し出されて層間から排出されることがわかる。また、トレッド部７５のショルダー領域７５Ｂに配置したセンサー８が最初に内部圧力を検出し、次いでセンター領域７５Ａに配置したセンサー８が内部圧力を検出すると、ベルト層７６とトレッドゴム層７７との間の残留エアがショルダー側からセンター側に押されて、センター側に残留することがわかる。   For example, when the sensor 8 disposed in the center region 75A of the tread portion 75 first detects the internal pressure and then the sensor 8 disposed in the shoulder region 75B detects the internal pressure, the gap between the belt layer 76 and the tread rubber layer 77 is detected. It can be seen that the residual air is extruded from the center side to the shoulder side and exhausted from the interlayer. Further, when the sensor 8 disposed in the shoulder region 75B of the tread portion 75 first detects the internal pressure, and then the sensor 8 disposed in the center region 75A detects the internal pressure, the gap between the belt layer 76 and the tread rubber layer 77 is detected. It can be seen that the remaining air is pushed from the shoulder side to the center side and remains on the center side.

しかしながら、センサー８を設置する部位は、上述した部位に限定されず、タイヤ構造に応じて適宜設定することができる。   However, the part where the sensor 8 is installed is not limited to the part described above, and can be set as appropriate according to the tire structure.

上記のようにセンサー８をタイヤ構成部材間に設置したグリーンタイヤ７を、通常通りに加硫する。即ち、不図示のローダでグリーンタイヤ７をタイヤ加硫機まで搬送し、そこで加圧媒体を供給して膨張させたブラダー６によりグリーンタイヤ７を保持して加硫金型１内にセットする。ブラダー６内に更に高圧の加圧媒体と加熱媒体を供給し、加硫金型１内にセットしたグリーンタイヤ７内に内圧を付与する。それによりグリーンタイヤ７が膨張して加硫金型１の内面（上型２の内面２ａと下型３の内面３ａとセクター４の内面４ａ）に押し当てられ、押圧されながら加硫金型１内で加硫される。   The green tire 7 in which the sensor 8 is installed between the tire constituent members as described above is vulcanized as usual. That is, the green tire 7 is conveyed to a tire vulcanizer by a loader (not shown), and the green tire 7 is held and set in the vulcanizing mold 1 by a bladder 6 that is expanded by supplying a pressure medium there. A higher pressure medium and a heating medium are supplied into the bladder 6, and an internal pressure is applied to the green tire 7 set in the vulcanization mold 1. As a result, the green tire 7 expands and is pressed against the inner surface of the vulcanizing mold 1 (the inner surface 2a of the upper mold 2, the inner surface 3a of the lower mold 3, and the inner surface 4a of the sector 4). Vulcanized inside.

その際に、ベルト層７６とトレッドゴム層７７の間の層間に作用する内部圧力がベルト層７６とトレッドゴム層７７との間に設置した各部位のセンサー８により時系列的に連続して測定される。図１の例では、トレッド部７５のセンター領域７５Ａが先にセクター内面４ａの周方向溝成形突条４Ｘに当接して押圧されるので、センター領域７５Ａに配置したセンサー８が先に内部圧力の上昇を検出し、次いでショルダー領域７５Ｂに配置したセンサー８が内部圧力の上昇を検出する。各センサー８は加硫終了まで内部圧力を連続して検出する。   At that time, the internal pressure acting between the belt layer 76 and the tread rubber layer 77 is continuously measured in time series by the sensors 8 provided in the respective portions between the belt layer 76 and the tread rubber layer 77. Is done. In the example of FIG. 1, since the center region 75A of the tread portion 75 is first pressed against the circumferential groove forming protrusion 4X of the sector inner surface 4a, the sensor 8 disposed in the center region 75A first detects the internal pressure. The rise is detected, and then the sensor 8 arranged in the shoulder region 75B detects the rise in internal pressure. Each sensor 8 continuously detects the internal pressure until vulcanization is completed.

このように本発明では、加硫時にセンサー８によりベルト層７６とトレッドゴム層７７間に作用する内部圧力を測定するようにしたので、得られた内部圧力の情報に基づき、界面におけるトレッドゴム層７７のゴム流れの状態を判断することが可能になる。従って、その判断に基づき、加硫条件（加圧媒体の最大圧力や圧力分布）を適宜調整して、各センサー８で検出した内部圧力を所定の値、即ち、内部圧力の差を小さくするようにすることで、ゴム流れ状態を改善することができ、タイヤ品質の向上が可能になる。従って、タイヤ構成部材間に作用する内部圧力の影響を受けるタイヤ品質の改善に寄与する。   As described above, in the present invention, since the internal pressure acting between the belt layer 76 and the tread rubber layer 77 is measured by the sensor 8 during vulcanization, the tread rubber layer at the interface is based on the obtained internal pressure information. It is possible to determine the state of 77 rubber flow. Therefore, based on the determination, the vulcanization conditions (maximum pressure and pressure distribution of the pressurized medium) are appropriately adjusted so that the internal pressure detected by each sensor 8 is reduced to a predetermined value, that is, the difference between the internal pressures. By doing so, the rubber flow state can be improved, and the tire quality can be improved. Therefore, it contributes to the improvement of tire quality affected by the internal pressure acting between the tire constituent members.

また、異なる複数の部位に設置した複数のセンサー８によりそれぞれベルト層７６とトレッドゴム層７７との間の内部圧力を時系列的に測定することで、層間に内部圧力が作用する順序を知ることができる。この順序は、センター領域７５Ａに配置したセンサー８が先に内部圧力を検出し、次いで両ショルダー領域７５Ｂに配置したセンサー８が内部圧力を検出した場合には、層間に残留するエアをセンター側からセンター側に押し出して層間の外に排出し、両者の接着を良好にできるので問題ないが、両ショルダー領域７５Ｂに配置したセンサー８が内部圧力を検出した後、センター領域７５Ａに配置したセンサー８が内部圧力を検出する場合には、層間に残留するエアがショルダー側からセンター側に移動し、センター側に残留するので、加硫後のタイヤにおいて層間の耐剥離性が低下する。そこで、このような場合には、加硫条件（加圧媒体の最大圧力や圧力分布）を見直し、センター領域７５Ａに配置したセンサー８が先に内部圧力の検出を開始するように修正することで、エアを層間外に効果的に排出し、エア溜まりに起因する層間の耐剥離性を改善することができ、従って、タイヤ品質の改善に一層寄与する。   In addition, by measuring the internal pressure between the belt layer 76 and the tread rubber layer 77 in time series using the plurality of sensors 8 installed at different parts, the order in which the internal pressure acts between the layers is known. Can do. In this order, when the sensor 8 arranged in the center region 75A first detects the internal pressure, and then the sensor 8 arranged in both shoulder regions 75B detects the internal pressure, the air remaining between the layers is separated from the center side. There is no problem because it can be pushed out to the center side and discharged out of the interlayer and the adhesion between the two can be improved, but after the sensor 8 arranged in both shoulder regions 75B detects the internal pressure, the sensor 8 arranged in the center region 75A When detecting the internal pressure, the air remaining between the layers moves from the shoulder side to the center side and remains on the center side, so that the peel resistance between the layers is reduced in the vulcanized tire. Therefore, in such a case, the vulcanization conditions (maximum pressure and pressure distribution of the pressurized medium) are reviewed, and the sensor 8 arranged in the center region 75A is corrected so as to start detecting the internal pressure first. The air can be effectively discharged out of the interlayer, and the peeling resistance between the layers due to the air accumulation can be improved, thus further contributing to the improvement of the tire quality.

本発明において、ブラダー６やグリーンタイヤ７に設置するセンサー８の検出素子としては、図２に示すように、配線基板９上に配置した感圧導電ゴム１０を好ましく使用することができる。感圧導電ゴム１０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、良好な測定精度を得る上でよい。直径Ｄの上限値としては、設置可能であれば特に限定されるものではないが、測定部位の精度維持の点から１５ｍｍ以下にするのがよい。   In the present invention, as the detection element of the sensor 8 installed on the bladder 6 or the green tire 7, as shown in FIG. 2, a pressure-sensitive conductive rubber 10 disposed on the wiring board 9 can be preferably used. The pressure-sensitive conductive rubber 10 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. Good to get. The upper limit of the diameter D is not particularly limited as long as it can be installed, but is preferably 15 mm or less from the viewpoint of maintaining the accuracy of the measurement site.

センサー８は、好ましくは検出した内部圧力のデータを記憶できる構成のものがよく、その場合、加硫終了後にタイヤ内のセンサー８を取り出して内部圧力のデータを取得するようにする。また、それに代えて、電線により記録計に接続し、内部圧力のデータを逐次記録するようにしてもよい。   The sensor 8 is preferably configured to be able to store the detected internal pressure data. In this case, the sensor 8 in the tire is taken out after the vulcanization is completed to acquire the internal pressure data. Alternatively, the internal pressure data may be sequentially recorded by connecting to a recorder with an electric wire.

上記実施形態では、センサー８を設置するタイヤ構成部材間として、ベルト層７６とトレッドゴム層７７の間を挙げた例を示したが、それに限定されない。好ましくは、補強コードをゴム層に埋設したベルト層７６やカーカス層７２などの補強体層と、その外側に配置したゴム層との間に設置するのがよい。補強体層とその外側のゴム層との界面には、加硫時の内圧が界面全体にわたって均等に加わり難い傾向がある。そこで、その層間に上記のようにセンサー８を設置して内部圧力情報を得ることで、タイヤ品質を効果的に改善することができる。図１に示す構造のタイヤにおいて、カーカス層７２とその外側のサイドゴム層７９との間にセンサー８を設置する場合には、タイヤ径方向に異なる複数の部位Ｓ１，Ｓ２，Ｓ３に設置するのがよい。   In the said embodiment, although the example which mentioned between the belt layer 76 and the tread rubber layer 77 was shown as between the tire structural members which install the sensor 8, it is not limited to it. Preferably, the reinforcing cord is installed between a reinforcing body layer such as a belt layer 76 or a carcass layer 72 embedded in a rubber layer, and a rubber layer disposed outside the reinforcing body layer. At the interface between the reinforcing body layer and the outer rubber layer, the internal pressure during vulcanization tends not to be applied evenly over the entire interface. Therefore, the tire quality can be effectively improved by installing the sensor 8 between the layers and obtaining the internal pressure information as described above. In the tire having the structure shown in FIG. 1, when the sensor 8 is installed between the carcass layer 72 and the outer side rubber layer 79, it is installed at a plurality of portions S 1, S 2, S 3 that are different in the tire radial direction. Good.

本発明は、上記した実施形態のように、センサー８を異なる複数の部位に設置し、その複数のセンサー８によりそれぞれ内部圧力を時系列的に測定するのが、タイヤ品質をより効果的に改善する上で好ましいが、グリーンタイヤ７のタイヤ構成部材間に設置したセンサー８によりタイヤ構成部材間に作用する内部圧力を測定するか、或いはグリーンタイヤ７のタイヤ構成部材間の異なる複数の部位に設置した複数のセンサー８によりタイヤ構成部材間の異なる部位に内部圧力が作用する順序を測定するいずれか一方によっても、タイヤ構成部材間に作用する内部圧力の影響を受けるタイヤ品質の改善に寄与する。   In the present invention, as in the above-described embodiment, the sensor 8 is installed in a plurality of different parts, and the internal pressure is measured in time series by the plurality of sensors 8 to improve the tire quality more effectively. Preferably, the internal pressure acting between the tire constituent members is measured by the sensor 8 installed between the tire constituent members of the green tire 7 or installed at a plurality of different locations between the tire constituent members of the green tire 7. Any one of measuring the order in which the internal pressure acts on different parts between the tire constituent members by the plurality of sensors 8 contributes to the improvement of the tire quality affected by the internal pressure acting between the tire constituent members.

内部圧力が作用する順序を測定する場合、センサー８は上述した圧力を測定するセンサーに代えて、接触によりオンになるオン・オフスイッチから構成してもよい。   When measuring the order in which the internal pressure acts, the sensor 8 may be configured by an on / off switch that is turned on by contact instead of the above-described sensor that measures the pressure.

また、内部圧力の情報を得てタイヤ品質の改善を図る場合には、上記したように複数のセンサー８を用いるのが効率的で好ましいが、１つのセンサー８を設置部位を変えて使用するようにしてもよい。例えば、同じ構造のタイヤにおいて、センサー８をトレッド部７５のセンター領域７５Ａのベルト層７６とトレッドゴム層７７間に設置し、それにより内部圧力情報を得る。続いて、センサー８をトレッド部７５の各ショルダー領域７５Ｂのベルト層７６とトレッドゴム層７７間に設置し、それにより内部圧力情報を得るようにする。   Further, in order to improve the tire quality by obtaining the internal pressure information, it is efficient and preferable to use the plurality of sensors 8 as described above, but one sensor 8 is used by changing the installation site. It may be. For example, in a tire having the same structure, the sensor 8 is installed between the belt layer 76 and the tread rubber layer 77 in the center region 75A of the tread portion 75, thereby obtaining internal pressure information. Subsequently, the sensor 8 is installed between the belt layer 76 and the tread rubber layer 77 in each shoulder region 75B of the tread portion 75, thereby obtaining internal pressure information.

本発明で使用する加硫金型１は、上述した上型２、下型３、セクター４を備えたセクショナルタイプに限定されず、グリーンタイヤ７の一方の半分を成型する上型と他方の半分を成型する下型を備えた２分割構造の金型であってもよい。   The vulcanizing mold 1 used in the present invention is not limited to the sectional type including the upper mold 2, the lower mold 3, and the sector 4 described above, and the upper mold for molding one half of the green tire 7 and the other half. It may be a mold having a two-part structure provided with a lower mold.

また、上記実施形態では、ブラダー６を用いて加硫する方法について説明したが、加硫金型１内でブラダー６を用いずに加硫する方法であってもよい。   Moreover, although the method of vulcanizing using the bladder 6 was demonstrated in the said embodiment, the method of vulcanizing without using the bladder 6 in the vulcanization metal mold | die 1 may be sufficient.

本発明のタイヤ加硫方法において、加硫金型内にセットしたグリーンタイヤを膨張させて加硫金型内面に押しつける工程を示する断面図である。In the tire vulcanizing method of the present invention, it is a cross-sectional view showing a step of inflating and pressing a green tire set in a vulcanizing mold against the inner surface of the vulcanizing mold. センサーに使用される検出素子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 detection element used for a sensor.

符号の説明Explanation of symbols

１ 加硫金型
２ 上型
２ａ 内面
３ 下型
３ａ 内面
４ セクター
４ａ 内面
７ グリーンタイヤ
８ センサー
１０ 感圧導電ゴム
７１ ビード部
７２ カーカス層
７５ トレッド部
７５Ａ センター領域
７５Ｂ ショルダー領域
７６ ベルト層
７７ トレッドゴム層
７８ サイドウォール部
７９ サイドゴム層 DESCRIPTION OF SYMBOLS 1 Vulcanization mold 2 Upper mold 2a Inner surface 3 Lower mold 3a Inner surface 4 Sector 4a Inner surface 7 Green tire 8 Sensor 10 Pressure sensitive conductive rubber 71 Bead part 72 Carcass layer 75 Tread part 75A Center area 75B Shoulder area 76 Belt layer 77 Tread rubber Layer 78 Side wall 79 Side rubber layer

Claims (9)

加硫金型内にセットしたグリーンタイヤ内に内圧を付与し、該グリーンタイヤを膨張させて加硫金型内面に押圧しながら加硫する際に、グリーンタイヤのタイヤ構成部材間に設置したセンサーにより該タイヤ構成部材間に作用する内部圧力を測定するタイヤ加硫方法。   Sensor installed between the tire components of the green tire when applying an internal pressure to the green tire set in the vulcanizing mold and inflating the green tire to vulcanize while pressing against the inner surface of the vulcanizing mold A tire vulcanizing method for measuring an internal pressure acting between the tire constituent members. 前記センサーを前記タイヤ構成部材間の異なる複数の部位に設置し、該センサーによりそれぞれの部位に作用する内部圧力を時系列的に測定する請求項１に記載のタイヤ加硫方法。   The tire vulcanizing method according to claim 1, wherein the sensor is installed at a plurality of different portions between the tire constituent members, and the internal pressure acting on each portion is measured in time series by the sensor. 加硫金型内にセットしたグリーンタイヤ内に内圧を付与し、該グリーンタイヤを膨張させて加硫金型内面に押圧しながら加硫する際に、グリーンタイヤのタイヤ構成部材間の異なる複数の部位に設置した複数のセンサーにより、該タイヤ構成部材間の異なる部位に内部圧力が作用する順序を測定するタイヤ加硫方法。   When an internal pressure is applied to the green tire set in the vulcanization mold and the green tire is inflated and vulcanized while pressing against the inner surface of the vulcanization mold, a plurality of different tire constituent members of the green tire are different. A tire vulcanizing method in which the order in which internal pressure acts on different parts between the tire constituent members is measured by a plurality of sensors installed in the part. 前記タイヤ構成部材間が、補強コードをゴム層に埋設した補強体層と該補強体層の外側に配置したゴム層との間である請求項１，２または３に記載のタイヤ加硫方法。   The tire vulcanizing method according to claim 1, 2 or 3, wherein a space between the tire constituent members is between a reinforcing body layer in which a reinforcing cord is embedded in a rubber layer and a rubber layer disposed outside the reinforcing body layer. 前記補強体層がトレッド部に配置したベルト層を含み、前記ゴム層がベルト層の外周側に配置したトレッドゴム層を含み、前記センサーを前記ベルト層とトレッドゴム層との間でタイヤ軸方向に異なる複数の部位に設置した請求項４に記載のタイヤ加硫方法。   The reinforcing body layer includes a belt layer disposed in a tread portion, the rubber layer includes a tread rubber layer disposed on an outer peripheral side of the belt layer, and the sensor is disposed in a tire axial direction between the belt layer and the tread rubber layer. The tire vulcanizing method according to claim 4, wherein the tire vulcanizing method is installed at a plurality of different parts. 前記複数の部位がトレッド部のセンター領域と両ショルダー領域を含む請求項５に記載のタイヤ加硫方法。   The tire vulcanizing method according to claim 5, wherein the plurality of portions include a center region of the tread portion and both shoulder regions. 前記補強体層が左右のビード部間に延設したカーカス層を含み、前記ゴム層がサイドウォール部のカーカス層外側に配置したサイドゴム層を含み、前記センサーを前記カーカス層とサイドゴム層との間でタイヤ径方向に異なる複数の部位に設置した請求項４，５または６に記載のタイヤ加硫方法。   The reinforcing body layer includes a carcass layer extending between the left and right bead portions, the rubber layer includes a side rubber layer disposed outside the carcass layer of the side wall portion, and the sensor is disposed between the carcass layer and the side rubber layer. The tire vulcanizing method according to claim 4, 5 or 6, wherein the tire vulcanizing method is installed at a plurality of portions different in the tire radial direction. 前記センサーの検出素子が感圧導電ゴムからなる請求項１乃至７のいずれかに記載のタイヤ加硫方法。   The tire vulcanizing method according to claim 1, wherein the detection element of the sensor is made of a pressure-sensitive conductive rubber. 前記感圧導電ゴムを直径５ｍｍ以上、厚さ０．５ｍｍ〜２．０ｍｍの円板状に形成した請求項８に記載のタイヤ加硫方法。
The tire vulcanizing method according to claim 8, wherein the pressure-sensitive conductive rubber is formed in a disk shape having a diameter of 5 mm or more and a thickness of 0.5 mm to 2.0 mm.
JP2006134061A 2006-05-12 2006-05-12 Tire vulcanization method Expired - Fee Related JP4816232B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006134061A JP4816232B2 (en) 2006-05-12 2006-05-12 Tire vulcanization method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006134061A JP4816232B2 (en) 2006-05-12 2006-05-12 Tire vulcanization method

Publications (2)

Publication Number Publication Date
JP2007301901A JP2007301901A (en) 2007-11-22
JP4816232B2 true JP4816232B2 (en) 2011-11-16

Family

ID=38836250

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006134061A Expired - Fee Related JP4816232B2 (en) 2006-05-12 2006-05-12 Tire vulcanization method

Country Status (1)

Country Link
JP (1) JP4816232B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4857900B2 (en) * 2006-05-12 2012-01-18 横浜ゴム株式会社 Tire vulcanization method
JP6254790B2 (en) * 2013-08-21 2017-12-27 東洋ゴム工業株式会社 Green tire prototype method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879126A (en) * 1981-11-05 1983-05-12 Nissan Motor Co Ltd Pressure sensitive sensor
US5181975A (en) * 1991-03-27 1993-01-26 The Goodyear Tire & Rubber Company Integrated circuit transponder with coil antenna in a pneumatic tire for use in tire identification
JP2675697B2 (en) * 1991-09-19 1997-11-12 三菱重工業株式会社 Tire vulcanization method
JP3818560B2 (en) * 1998-09-04 2006-09-06 横浜ゴム株式会社 Method for detecting state in vulcanization mold, temperature sensor, and vulcanization system
JP4501097B2 (en) * 2001-01-12 2010-07-14 横浜ゴム株式会社 Transponder for mounting tire and method for manufacturing tire mounted with transponder
JP4810982B2 (en) * 2005-11-11 2011-11-09 横浜ゴム株式会社 Pneumatic tire manufacturing method
JP5044975B2 (en) * 2006-05-01 2012-10-10 横浜ゴム株式会社 Pressure sensor for pressure measurement of unvulcanized tires

Also Published As

Publication number Publication date
JP2007301901A (en) 2007-11-22

Similar Documents

Publication Publication Date Title
JP4810982B2 (en) Pneumatic tire manufacturing method
JP4523815B2 (en) Heavy duty pneumatic tire and manufacturing method thereof
JP4900608B2 (en) Tire vulcanization bladder, tire vulcanization molding method, and pneumatic tire
JP4039895B2 (en) Method for forming tire tread component and pneumatic tire
US20170217114A1 (en) Measuring tire pressure in a tire mold
JP4735124B2 (en) Pneumatic tire manufacturing method
JP5052983B2 (en) Pneumatic tire manufacturing method
JP4816232B2 (en) Tire vulcanization method
JPH10193472A (en) Production of pneumatic tire
JP4853146B2 (en) Tire vulcanization method
JP4857900B2 (en) Tire vulcanization method
JP6939209B2 (en) Tire vulcanization method
JP4191936B2 (en) Pneumatic tire manufacturing method and pneumatic tire
JP4967461B2 (en) Pressure measurement method for tire components
JP5056119B2 (en) Method for measuring deformation behavior of tire reinforcement layer
JP5050804B2 (en) Tire vulcanization method
CN114786933B (en) Vulcanizing process and apparatus for tires
JP4952925B2 (en) Pneumatic tire vulcanization molding method and apparatus
JP4604783B2 (en) Manufacturing method of rigid core for tire vulcanization and pneumatic tire
JP6935700B2 (en) Tire vulcanization method
JP5019595B2 (en) Pneumatic tire manufacturing method
JPH05124132A (en) Precured tread and production thereof
KR101566183B1 (en) Bladder of Tire Vulcanizing
JP3774517B2 (en) Pneumatic tire mold
JP5056440B2 (en) Pneumatic tire manufacturing method and pneumatic tire

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090508

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110713

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110802

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110815

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140909

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4816232

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140909

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees