JP4251888B2

JP4251888B2 - Reinforcing material affixing method and reinforcing material affixing device in tire molding servicer

Info

Publication number: JP4251888B2
Application number: JP2003050501A
Authority: JP
Inventors: 利夫田中; 哲也藤永
Original assignee: Yokohama Rubber Co Ltd
Current assignee: Yokohama Rubber Co Ltd
Priority date: 2003-02-27
Filing date: 2003-02-27
Publication date: 2009-04-08
Anticipated expiration: 2023-02-27
Also published as: JP2004255770A

Description

【０００１】
【発明の属する技術分野】
この発明は、タイヤ成形サービサーに於ける補強材の貼付け方法及びその補強材の貼付け装置に係わり、更に詳しくは帯状材料及び補強帯状材料の切断装置の寿命を延ばし、帯状材料の補強コードの露出防止と、タイヤユニフォミティーを向上させたタイヤ成形サービサーに於ける補強材の貼付け方法及びその補強材の貼付け装置に関するものである。
【０００２】
【従来の技術】
従来、タイヤの成形工程において帯状材料を複数毎積層させて成形ドラムに供給し巻付ける場合、タイヤ成形サービサーのコンベヤ上で第１の帯状材料と第２の帯状材料との先端位置をずらせて積層させる方法が行われている。これは、成形ドラム上において、ラップスプライス（重ね貼合わせ）位置をずらせることにより剛性バランス，重量バランスを調整し、タイヤユニフォミティーを向上させる目的から行われている（例えば、特許文献１参照）。
【０００３】
【特許文献１】
特開平８−１７４７１２号公報（第３頁〜第４頁、図１）
【０００４】
【発明が解決しようとする課題】
ところで、タイヤビード部に１層目のカーカス部材を巻上げ、その外側に２層目のカーカス部材を巻付けた２プライカーカス構造のタイヤを製造する場合、タイヤ成形サービサーの搬送コンベヤ上においてカーカス材料の長手方向両端部に細幅の補強帯状材料（一般にチエーファまたはフィニッシャーと呼称されている）を貼付け、この補強帯状材料を貼付けた帯状材料を成形ドラムの略周長（成形ドラムの周長＋貼付け代）に対応する長さで切断装置のカッターにより切断し、その後、成形ドラム上に供給して筒状に巻付けて端末部を貼付ける方法が行われている。
【０００５】
然しながら、搬送コンベヤ上において一般にスダレ織り構造のカーカスと、一般に平織り構造の帯状補強材料とを貼合わせた状態で切断装置により定尺切断する方法では、積層厚さも厚く、剛性も高いために切断が難い上に、カッターの寿命が短く、短期間にカッターの切れ味が悪くなってしまう。
【０００６】
更にカーカスと帯状補強材料とを貼合わせた状態で成形ドラムに巻付けて端末部を貼合わせた場合、肉厚が厚いために貼合わせ部の段差が大きくなり、剛性バランス，重量バランスの調整が難しくなってタイヤユニフォミティーを悪化させる等の問題があった。
【０００７】
この発明はかかる従来の問題点に着目し、切断装置のカッターの寿命を延ばすことが出来ると共に、帯状材料の切断端末部から補強コードが露出するのを防止し、更に貼合わせ部の段差を小さくすると共に、貼合わせ部を分散化させることでタイヤのユニフォミティーを向上させることが出来るタイヤ成形サービサーに於ける補強材の貼付け方法及びその補強材の貼付け装置を提供することを目的とするものである。
【０００８】
【課題を解決するための手段】
この発明は上記目的を達成するため、この発明のタイヤ成形サービサーに於ける補強材の貼付け方法は、成形ドラム上に定尺切断された２層以上の帯状材料を巻付ける際、成形ドラムに１層目の帯状材料を巻付けてターンアップした後、この１層目の帯状材料上に、帯状材料の先端位置に対して後方側に所定距離ずらせて貼付けた左右一対の補強帯状材料と２層目の帯状材料とを巻付け、巻付け終了時に帯状材料の長手方向の端末部を覆うように前記補強帯状材料を貼付けることを要旨とするものである。
【０００９】
ここで、前記帯状材料の先端に貼付ける補強帯状材料のずらし量を検出して、補強帯状材料の端末部を帯状材料の定尺切断した長さに対応して切断し、また前記成形ドラム上で貼付ける補強帯状材料の端末部同志の貼付け位置は、帯状材料の長手方向の端末部の貼付け位置を覆った位置で貼付ける。
【００１０】
このように、帯状材料と補強帯状材料とは、ずらせた位置で別々に切断するので、切断装置のカッターに過度の負荷がかからず、カッターの寿命を延ばすことが出来、また補強帯状材料の端末部同志の貼付け位置は、帯状材料の端末部の貼付け位置を覆った位置で貼付けるので、カーカスの切断端末部から補強コードが露出するのを防止でき、更に貼合わせ部の段差を小さくすると共に、貼合わせ部を分散化させることでタイヤのユニフォミティーを向上させることが出来るものである。
【００１１】
また、この発明のタイヤ成形サービサーに於ける補強材の貼付け装置は、成形ドラムに帯状材料を搬送供給する前後搬送コンベヤ上に、帯状材料を成形ドラムの略周長に対応する長さに定尺切断する帯状材料切断装置と、前記帯状材料の長手方向の両側縁部上に左右一対の細幅の補強帯状材料を供給する供給手段と、該補強帯状材料を帯状材料の長手方向の両側縁部上に貼付ける貼合わせ装置と、前記帯状材料の先端に対して補強帯状材料の先端貼付け位置のずらし量を検出するずらし量検出手段と、このずらし量検出手段の検出値に基づき、補強帯状材料の後端位を帯状材料の長さと略同じ長さで定尺切断する補強帯状材料切断装置とで構成したことを要旨とするものである。
【００１２】
前記前後搬送コンベヤは、成形ドラム上に供給する２層目の帯状材料の前後搬送コンベヤである。
【００１３】
このように、補強帯状材料の切断位置は、帯状材料の先端位置からのずらし量をずらし量検出手段で検出して切断するので、常に正確な定尺切断ができ、補強帯状材料の端末部同志の貼付け位置は、帯状材料の端末部の貼付け位置を覆った位置で貼付けて帯状材料の切断端末部から補強コードが露出するのを防止できるものである。
【００１４】
このように、補強帯状材料の端末部同志の貼付け位置は、帯状材料の端末部の貼付け位置を覆った位置で貼付けるので、帯状材料の切断端末部から補強コードが露出するのを防止でき、更に貼合わせ部の段差を小さくすると共に、貼合わせ部を分散化させることでタイヤのユニフォミティーを向上させることが出来るものである。
【００１５】
【発明の実施の形態】
以下、添付図面に基づき、この発明の実施形態を説明する。
【００１６】
図１は、この発明の補強材の貼付け方法を実施するためのタイヤ成形サービサーの概略正面図、図２は図１の平面図を示し、前記タイヤ成形サービサー１は、成形ドラム２の側部に設置され、上段側には、例えば、インナーライナーや１層目のカーカス材等の帯状材料を供給する前進後退可能な第１の前後搬送コンベヤ３と、下段側には２層目のカーカス材等の帯状材料Ｗ及び左右一対の補強帯状材料Ｗｘ（チエーファまたはフィニッシャー）を成形ドラム２に搬送する第２の前後搬送コンベヤ４ａ及び搬送コンベヤ４ｂが水平に設置されている。
【００１７】
前記前後搬送コンベヤ４ａと搬送コンベヤ４ｂとの間には、帯状材料Ｗを成形ドラム２の略周長に対応する長さ（成形ドラムの周長＋貼付け代）に定尺切断する帯状材料切断装置５を設置し、また前記前後搬送コンベヤ４ａ上には、前記帯状材料Ｗの幅方向の両側縁部上に帯状材料Ｗの長手方向に沿って左右一対の細幅の補強帯状材料Ｗｘを供給する供給手段６と、該補強帯状材料Ｗｘを帯状材料Ｗの長手方向の両側縁部上に貼付ける貼合わせ装置７と、前記帯状材料Ｗの先端を検出する検出手段８ａ及び帯状材料Ｗの先端に対して補強帯状材料Ｗｘの先端貼付け位置のずらし量ｈを検出するパルス検出器等のずらし量検出手段８ｂと、このずらし量検出手段８ａ，８ｂの検出値に基づき、補強帯状材料Ｗｘの後端位を帯状材料Ｗの長さと略同じ長さ（成形ドラムの周長＋貼付け代）で定尺切断する補強帯状材料切断装置９とが設置されている。
【００１８】
前記前後搬送コンベヤ４ａと搬送コンベヤ４ｂとの間に設置された帯状材料切断装置５は、垂直向きにカッター１０を取付けた切断シリンダー１１が設置され、この切断シリンダー１１は、前記帯状材料Ｗの先端を検出する検出手段８ａからの検出信号（例えば、パルス信号）に基づいて作動し、カッター１０を前後搬送コンベヤ４ａと搬送コンベヤ４ｂとの水平面に対して鉛直向きに下降させて帯状材料Ｗを定尺切断に切断する。
【００１９】
前記前後搬送コンベヤ４ａは、二列のベルトコンベヤで構成され、このベルトコンベヤ間には、投光器と受光器等から成る光学的検出手段ＰＨ１，ＰＨ２が設置されている。また、前後搬送コンベヤ４ａの回転軸４ｘにはパルスカウンターＰｚが接続され、帯状材料Ｗの送り量をパルスでカウントして検出している。
【００２０】
次に、補強帯状材料Ｗｘの供給手段６は、補強帯状材料Ｗｘの供給部から巻出された二本の補強帯状材料Ｗｘを複数本のガイドロール１２と、補強帯状材料Ｗｘの先端を帯状材料Ｗの両側縁貼合わせ部にガイドする進退可能なガイド機構１３と、補強帯状材料Ｗｘの先端を所定のピッチで送りだす送り出し機構１４とで構成され、ガイド機構１３は、図１及び図３（ａ），（ｂ）に示すように、シリンダー１３ａ等を介して進退するガイドプレート１３ｂにより構成され、また送り出し機構１４は、ガイドプレート１３ｂ上に補強帯状材料Ｗｘの先端を挟んで送りだすラチェット爪１４ａ等により構成されている。
【００２１】
このガイド機構１３の先端側には、上述した補強帯状材料Ｗｘの後端位を帯状材料Ｗの長さと略同じ長さ（成形ドラムの周長＋貼付け代）で定尺切断する補強帯状材料切断装置９と、貼合わせ装置７とが設置され、補強帯状材料切断装置９は、鋏状のカッター等により前記ずらし量検出手段８ｂからのずらし量ｈの検出信号に基づき、補強帯状材料Ｗｘの後端位を帯状材料Ｗの長さと略同じ長さで定尺切断する。
【００２２】
補強帯状材料Ｗｘの帯状材料Ｗの長さと略同じ長さ（成形ドラムの周長＋貼付け代）で定尺切断する方法としては、前記パルスカウンターＰｚのパルス数の設定で行い、前後搬送コンベヤ４ａと搬送コンベヤ４ｂとで補強帯状材料Ｗｘの所定の距離搬送市、停止した段階でカッター１０により切断するものである。
【００２３】
また、貼合わせ装置７は、シリンダー１５を介して昇降する貼合わせロール１６により構成され、前記補強帯状材料切断装置９により切断された二本の補強帯状材料Ｗｘを帯状材料Ｗに先端に対して所定のずらし量ｈで貼合わせた後、帯状材料Ｗ上に順次圧着させながら貼合わせる。
【００２４】
なお、帯状材料Ｗの長手方向の両側縁部上に定尺切断した二本の補強帯状材料Ｗｘを貼合わせる際、図４（ａ），（ｂ）に示すように、帯状材料Ｗと補強帯状材料Ｗｘとの間にポリエチレンシート等の樹脂ライナーＲを介在させて貼合わせることも可能である。
【００２５】
また、図１及び図２に示す軸２０ａと軸２０ｂとの端末部に取付けたスプロケット２１ａ，２１ｂには、チェーン２２が掛渡してあり、帯状材料Ｗの幅変更時に軸２０ａと軸２０ｂとが同期回転し、補強帯状材料Ｗｘを精度良く段取り替え出来るように構成されている。
【００２６】
次に、上記のようなタイヤ成形サービサーに於ける貼付け装置を用いてこの発明の補強材の貼付け方法について説明する。
【００２７】
先ず、タイヤ成形サービサー１の第１の前後搬送コンベヤ３から成形ドラム２上にインナーライナーや１層目のカーカス材等の定尺切断された帯状材料Ｗｓを供給して円筒状に巻付け、成形ドラム２の両側からビードＢを打ち込んでターンアップ帯状材料Ｗｓを両側縁部を巻き上げ（ターンアップ）する。
【００２８】
次いで、成形ドラム２上に２層目のカーカス材等の帯状材料Ｗを前後搬送コンベヤ４ａ，４ｂで搬送する際、帯状材料Ｗの搬送量を光学的検出手段ＰＨ１，ＰＨ２で検出し、パルスカウンターＰｚに予め設定されている設定値で帯状材料Ｗの搬送を停止させる。
【００２９】
そして前後搬送コンベヤ４ａにより成形ドラム２上に２層目のカーカス材等の帯状材料Ｗを供給して巻付ける際、前後搬送コンベヤ４ａ上に供給された帯状材料Ｗを上述のように定尺切断した後、この帯状材料Ｗの幅方向の両側縁部上に、先端から後方側に所定距離ずらせて左右一対の補強帯状材料Ｗｘを貼合わせ、その後端部は、先端側をずらせた量だけずらせて切断し、定尺切断した帯状材料Ｗの長さに対応させる。
【００３０】
なお、補強帯状材料Ｗｘの先端貼付け位置のずらし量ｈは、予めパルスカウンターＰｚに設定したパルスの設定値により行うもので、設定値は任意に変更することが可能であり、補強帯状材料Ｗｘの端末部の切断は、パルスカウンターＰｚに設定したパルス数の設定値にもとずき、カッター１０を作動させて切断する。
【００３１】
そして、この補強帯状材料Ｗｘを貼合わせた２層目の帯状材料Ｗを成形ドラム２上に供給して巻付けると共に、図６（ｂ）に示すように、帯状材料Ｗの前後端末の貼付け位置Ｐ１と、補強帯状材料Ｗｘの前後端末の貼付け位置Ｐ２とをずらせた状態で貼付ける。
【００３２】
即ち、従来の貼合わせでは、図６（ａ）に示すように、帯状材料Ｗと補強帯状材料Ｗｘとは積層させた同一位置で切断していたため、成形ドラム２上において端末部をＰ３の同一位置で重ね合わせて貼合わせした場合、厚さｔａは、この発明の貼合わせ部の厚さｔよりも補強帯状材料Ｗｘ一枚分の厚さだけ厚くなり、また貼合わせ箇所も分散させることが出来ることが出来ない。
【００３３】
そこで、この発明の実施形態では、補強帯状材料Ｗｘを帯状材料Ｗの端末部の貼付け位置を覆った位置で貼付け、これにより、帯状材料Ｗの切断端末部から補強コードが露出するのを防止できるものである。
【００３４】
このような方法により貼合わせた帯状材料Ｗ及び補強帯状材料Ｗｘで製造された空気入りタイヤＴは、図７，図８及び図６（ｂ）に示すように、帯状材料Ｗの前後端末の貼付け位置Ｐ１と、補強帯状材料Ｗｘの前後端末の貼付け位置Ｐ２とをずらせた状態で貼付けられ、しかも１層目のターンアップ帯状材料Ｗｓの端末巻き上げ部と、この端末巻き上げ部上に貼合わされた２層目のターンダウン帯状材料ＷＲとの端末部を覆うように補強帯状材料Ｗｘで覆うように貼合わせるので、帯状材料Ｗの貼合わせ部の段差を小さくなり、貼合わせ部を分散化させることでタイヤのユニフォミティーを向上させることが出来、また帯状材料Ｗの切断端末部から補強コードが露出するのを有効に防止出来るものである。
【００３５】
【発明の効果】
この発明は、上記のように成形ドラム上に定尺切断された２層以上の帯状材料を巻付ける際、成形ドラムに１層目の帯状材料を巻付けてターンアップした後、この１層目の帯状材料上に、帯状材料の先端位置に対して後方側に所定距離ずらせて貼付けた左右一対の補強帯状材料と２層目の帯状材料とを巻付け、巻付け終了時に帯状材料の長手方向の端末部を覆うように前記補強帯状材料を貼付ける切断装置のカッターに過度の負荷がかからず、カッターの寿命を延ばすことが出来、また補強帯状材料の端末部同志の貼付け位置は、帯状材料の端末部の貼付け位置を覆った位置で貼付けるので、カーカスの切断端末部から補強コードが露出するのを防止でき、更に貼合わせ部の段差を小さくすると共に、貼合わせ部を分散化させることでタイヤのユニフォミティーを向上させることが出来る効果がある。
【００３６】
また、この発明のタイヤ成形サービサーに於ける補強材の貼付け装置は、成形ドラムに帯状材料を搬送供給する前後搬送コンベヤ上に、帯状材料を成形ドラムの略周長に対応する長さに定尺切断する帯状材料切断装置と、前記帯状材料の長手方向の両側縁部上に左右一対の細幅の補強帯状材料を供給する供給手段と、該補強帯状材料を帯状材料の長手方向の両側縁部上に貼付ける貼合わせ装置と、前記帯状材料の先端に対して補強帯状材料の先端貼付け位置のずらし量を検出するずらし量検出手段と、このずらし量検出手段の検出値に基づき、補強帯状材料の後端位を帯状材料の長さと略同じ長さで定尺切断する補強帯状材料切断装置とで構成し、補強帯状材料の切断位置は、帯状材料の先端位置からのずらし量をずらし量検出手段で検出して切断するので、常に正確な定尺切断ができ、補強帯状材料の端末部同志の貼付け位置は、帯状材料の端末部の貼付け位置を覆った位置で貼付けて帯状材料の切断端末部から補強コードが露出するのを防止できる効果がある。
【００３７】
また、タイヤビード部に１層目のカーカス部材を巻上げ、その外側に２層目のカーカス部材を巻付けたタイヤの構造において、２層目のカーカス部材の端末部を覆うように補強帯状材料を貼付けて構成し、補強帯状材料の端末部同志の貼付け位置は、帯状材料の端末部の貼付け位置を覆った位置で貼付けるので、帯状材料の切断端末部から補強コードが露出するのを防止でき、更に貼合わせ部の段差を小さくすると共に、貼合わせ部を分散化させることでタイヤのユニフォミティーを向上させることが出来る効果がある。
【図面の簡単な説明】
【図１】この発明の補強材の貼付け方法を実施するためのタイヤ成形サービサーの概略正面図である。
【図２】図１の平面図である。
【図３】（ａ），（ｂ）は、補強帯状材料の切断貼合わせ工程の説明図である。
【図４】（ａ），（ｂ）は、ポリエチレン等のライナーを介在させて補強帯状材料を切断、貼合わせする工程の他の実施形態の説明図である。
【図５】成形ドラム上において帯状材料及び補強帯状材料を巻付けた状態の断面説明図である。
【図６】成形ドラム上において、この発明の帯状材料の端末部貼合わせ部と、従来の貼合わせ部とを比較した説明図で、（ａ）は従来の段差の大きな貼合わせ部の断面図、（ｂ）は、この発明の帯状材料と補強帯状材料とを分散させて貼合わせた状態の断面図である。
【図７】この発明の貼合わせ方法により製造した空気入りタイヤの半断面図である。
【図８】図７のビード部の拡大断面図である。
【符号の説明】
１タイヤ成形サービサー
２成形ドラム
３第１の前後搬送コンベヤ
４ａ第２の前後搬送コンベヤ
４ｂ搬送コンベヤ５帯状材料切断装置
４ｘ回転軸
６供給手段７貼合わせ装置
８ａ検出手段
８ｂずらし量検出手段
９補強帯状材料切断装置
１０カッター
１１切断シリンダー
１２ガイドロール
１３ガイド機構
１３ａシリンダー
１３ｂガイドプレート
１４送り出し機構
１４ａラチェット爪Ｗ帯状材料
１５シリンダー
１６貼合わせロール
２０ａ，２０ｂ軸
２１ａ，２１ｂスプロケット
２２チェーン
Ｗｘ補強帯状材料
ｈずらし量
Ｗｓターンアップ帯状材料
Ｒ樹脂ライナー
ＷＲターンダウン帯状材料
Ｂビード
Ｐ１，Ｐ２，Ｐ３帯状材料の前後端末の貼付け位置
ｔ，ｔａ貼合わせ部の厚さ
Ｔ空気入りタイヤ
ＰＨ１，ＰＨ２光学的検出手段
Ｐｚパルスカウンター[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a method for applying a reinforcing material and a device for applying the reinforcing material in a tire molding servicer, and more particularly to extend the life of a strip-shaped material and a cutting device for the reinforcing strip-shaped material, and prevent exposure of the reinforcing cord of the strip-shaped material. Further, the present invention relates to a method for applying a reinforcing material and a device for applying the reinforcing material in a tire molding servicer with improved tire uniformity.
[0002]
[Prior art]
Conventionally, when a plurality of belt-shaped materials are stacked in a tire molding process and supplied to a molding drum and wound, the leading end positions of the first belt-shaped material and the second belt-shaped material are shifted on the conveyor of the tire molding servicer. A way to make it happen. This is performed for the purpose of adjusting the rigidity balance and the weight balance by shifting the lap splice (overlap bonding) position on the forming drum and improving the tire uniformity (see, for example, Patent Document 1). .
[0003]
[Patent Document 1]
JP-A-8-174712 (page 3 to page 4, FIG. 1)
[0004]
[Problems to be solved by the invention]
By the way, when manufacturing a two-ply carcass structure tire in which a first-layer carcass member is wound around a tire bead portion and a second-layer carcass member is wound outside the tire bead portion, Narrow reinforcement strip material (generally called a chiefer or finisher) is pasted to both ends in the longitudinal direction, and the strip material with the reinforcement strip material pasted is approximately the circumference of the molding drum (perimeter of molding drum + pasting allowance) ) Is cut by a cutter of a cutting device, and then supplied onto a forming drum, wound in a cylindrical shape, and a terminal portion is pasted.
[0005]
However, the method of cutting with a cutting device in a state in which a carcass having a suede weave structure and a belt-like reinforcing material having a plain weave structure are generally laminated on a conveyor conveys the laminate because of its high thickness and high rigidity. In addition to being difficult, the life of the cutter is short, and the sharpness of the cutter deteriorates in a short time.
[0006]
In addition, when the carcass and belt-shaped reinforcing material are pasted together and wound around a forming drum and the end part is pasted together, the thickness of the pasted part increases due to the thick wall thickness, and the rigidity balance and weight balance can be adjusted. There were problems such as difficulty and worsening of tire uniformity.
[0007]
The present invention pays attention to such a conventional problem, and can extend the life of the cutter of the cutting device, prevent the reinforcing cord from being exposed from the cutting end portion of the belt-like material, and further reduce the step of the bonding portion. In addition, the object of the present invention is to provide a reinforcing material application method and a reinforcing material application device in a tire molding servicer that can improve tire uniformity by dispersing the bonding part. is there.
[0008]
[Means for Solving the Problems]
Since this invention to achieve the above object, pasting method in reinforcements tire building servicer of the invention, two or more layers of strip material which are fixed-length cut on the forming drum when winding, the molding drum 1 A pair of left and right reinforcing band-like materials and two layers pasted on the first-layer band-like material by being shifted a predetermined distance on the rear side with respect to the tip position of the band-like material after being turned up by winding the layer-like band-like material The gist of the invention is to wind the belt-shaped material of the eye and paste the reinforcing band-shaped material so as to cover the end portion in the longitudinal direction of the belt-shaped material at the end of the winding.
[0009]
Here, the shift amount of the reinforcing band-shaped material to be attached to the tip of the band-shaped material is detected, and the end portion of the reinforcing band-shaped material is cut in accordance with the length of the band-shaped material cut, The sticking position of the end portions of the reinforcing strip-like material to be pasted in is pasted at the position covering the pasting position of the end portion in the longitudinal direction of the strip-like material.
[0010]
In this way, the band-shaped material and the reinforcing band-shaped material are cut separately at the shifted positions, so that an excessive load is not applied to the cutter of the cutting device, and the life of the cutter can be extended. Since the application positions of the terminal parts are applied at the position covering the application position of the terminal part of the belt-shaped material, it is possible to prevent the reinforcing cord from being exposed from the cutting terminal part of the carcass, and further reduce the level difference of the application part. At the same time, the uniformity of the tire can be improved by dispersing the bonding portion.
[0011]
In addition, the reinforcing material sticking device in the tire molding servicer of the present invention is fixed on the length of the belt-like material corresponding to the approximate circumference of the molding drum on the front and rear conveyors for feeding and feeding the belt-like material to the molding drum. A strip material cutting device for cutting, a supply means for supplying a pair of left and right narrow reinforcing strip materials on both side edges in the longitudinal direction of the strip material, and both longitudinal edges of the strip in the longitudinal direction of the strip material Based on the detection value of the laminating amount detecting means for detecting the amount of shifting of the tip affixing position of the reinforcing band-shaped material with respect to the tip of the band-shaped material, the reinforcing band-shaped material The gist of the present invention is that the rear end position is constituted by a reinforcing band-shaped material cutting device that cuts at a length substantially the same as the length of the band-shaped material.
[0012]
The front / rear transport conveyor is a front / rear transport conveyor for a second layer of belt-like material supplied onto a forming drum.
[0013]
In this way, the cutting position of the reinforcing band-shaped material is cut by detecting the shift amount from the tip position of the band-shaped material by the shift amount detecting means. The affixing position can be affixed at a position covering the affixing position of the end portion of the strip-shaped material, and the reinforcement cord can be prevented from being exposed from the cut end portion of the strip-shaped material.
[0014]
In this way, the sticking position of the end portions of the reinforcing strip-shaped material is pasted at a position covering the pasting position of the end portion of the strip-shaped material, so that the reinforcing cord can be prevented from being exposed from the cutting end portion of the strip-shaped material, Furthermore, while reducing the level | step difference of a bonding part and dispersing a bonding part, the uniformity of a tire can be improved.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
[0016]
FIG. 1 is a schematic front view of a tire molding servicer for carrying out the method of sticking a reinforcing material of the present invention, FIG. 2 is a plan view of FIG. 1, and the tire molding servicer 1 is disposed on the side of a molding drum 2. Installed on the upper stage side, for example, a first front-and-rear transport conveyor 3 that can feed and retract a belt-like material such as an inner liner and a first-layer carcass material, and a second-layer carcass material on the lower stage side. The second front and rear transport conveyors 4a and 4b for transporting the belt-shaped material W and the pair of left and right reinforcing belt-shaped materials Wx (chaefers or finishers) to the forming drum 2 are installed horizontally.
[0017]
A strip-shaped material cutting device for cutting the strip-shaped material W to a length corresponding to the substantially circumferential length of the molding drum 2 (a circumferential length of the molding drum + a pasting allowance) between the front and rear transport conveyors 4a and 4b. 5 and a pair of left and right narrow reinforcing band-like materials Wx along the longitudinal direction of the band-like material W are supplied on both side edges in the width direction of the belt-like material W. Supply means 6, a laminating device 7 for affixing the reinforcing strip material Wx on both side edges in the longitudinal direction of the strip material W, a detection means 8a for detecting the tip of the strip material W, and a tip of the strip material W On the other hand, based on the detected value of the shift amount detecting means 8b such as a pulse detector for detecting the shift amount h of the sticking position of the tip of the reinforcing band material Wx and the detected values of the shift amount detecting means 8a and 8b, the rear end of the reinforcing band material Wx. The length of the band material W is abbreviated Flip the reinforcing strip material cutting apparatus 9 is installed to the fixed-length cut length (circumferential length + pasting margin of the forming drum).
[0018]
The belt-shaped material cutting device 5 installed between the front and rear transport conveyors 4a and 4b is provided with a cutting cylinder 11 with a cutter 10 mounted in a vertical direction. The cutting cylinder 11 is the tip of the belt-shaped material W. Based on a detection signal (for example, a pulse signal) from the detecting means 8a for detecting the belt material W, the cutter 10 is lowered in the vertical direction with respect to the horizontal plane of the front and rear conveying conveyors 4a and 4b to determine the belt-like material W. Cut into a scale cut.
[0019]
The front / rear transport conveyor 4a is composed of two rows of belt conveyors, and optical detection means PH1 and PH2 including a projector and a light receiver are installed between the belt conveyors. In addition, a pulse counter Pz is connected to the rotary shaft 4x of the front / rear transport conveyor 4a, and the feed amount of the band-shaped material W is counted and detected.
[0020]
Next, the supply means 6 of the reinforcing belt-like material Wx includes the two reinforcing belt-like materials Wx unwound from the supply portion of the reinforcing belt-like material Wx, a plurality of guide rolls 12, and the tip of the reinforcing belt-like material Wx. A guide mechanism 13 that can be advanced and retracted to guide both side edge bonding portions of W and a delivery mechanism 14 that feeds the tip of the reinforcing band-like material Wx at a predetermined pitch. The guide mechanism 13 is shown in FIGS. ), (B), it is constituted by a guide plate 13b that advances and retreats via a cylinder 13a and the like, and a feed mechanism 14 is a ratchet claw 14a that feeds the guide plate 13b with the tip of the reinforcing belt-like material Wx interposed therebetween. It is comprised by.
[0021]
At the front end side of the guide mechanism 13, the reinforcing band-shaped material cutting that cuts the rear end position of the above-described reinforcing band-shaped material Wx with a length substantially the same as the length of the band-shaped material W (peripheral length of the forming drum + pasting allowance) is performed. An apparatus 9 and a laminating apparatus 7 are installed, and the reinforcing band-shaped material cutting apparatus 9 is arranged on the back of the reinforcing band-shaped material Wx based on the detection signal of the shift amount h from the shift amount detecting means 8b by a hook-shaped cutter or the like. The end position is cut with a length approximately the same as the length of the band-shaped material W.
[0022]
As a method of cutting with a length substantially the same as the length of the strip-shaped material W of the reinforcing strip-shaped material Wx (peripheral length of the forming drum + the pasting allowance), the number of pulses of the pulse counter Pz is set, and the front and rear transport conveyor 4a The conveyor belt 4b is cut by the cutter 10 when the reinforcing belt-shaped material Wx is stopped at a predetermined distance.
[0023]
The laminating device 7 is composed of a laminating roll 16 that moves up and down via a cylinder 15, and the two reinforcing strip-shaped materials Wx cut by the reinforcing strip-shaped material cutting device 9 are applied to the strip-shaped material W with respect to the tip. After laminating with a predetermined shift amount h, the laminating is performed while sequentially pressing on the belt-like material W.
[0024]
When the two reinforcing band-shaped materials Wx cut at regular lengths are bonded on both side edges in the longitudinal direction of the band-shaped material W, as shown in FIGS. 4A and 4B, the band-shaped material W and the reinforcing band-shaped It is also possible to bond the material Wx with a resin liner R such as a polyethylene sheet interposed therebetween.
[0025]
Further, the chain 22 is spanned over the sprockets 21a and 21b attached to the end portions of the shaft 20a and the shaft 20b shown in FIGS. 1 and 2, and the shaft 20a and the shaft 20b are connected when the width of the belt-like material W is changed. It is configured to rotate synchronously so that the reinforced belt-like material Wx can be replaced with high accuracy.
[0026]
Next, the reinforcing material sticking method of the present invention will be described using the sticking device in the tire molding servicer as described above.
[0027]
First, a belt-shaped material Ws cut at a fixed length, such as an inner liner or a first layer carcass material, is supplied from a first front and rear conveying conveyor 3 of a tire molding servicer 1 onto a molding drum 2 and wound into a cylindrical shape. The bead B is driven from both sides of the drum 2 to wind up (turn up) both side edges of the turn-up strip material Ws.
[0028]
Next, when the belt-shaped material W such as the second-layer carcass material is transported on the forming drum 2 by the front and rear transport conveyors 4a and 4b, the transport amount of the belt-shaped material W is detected by the optical detection means PH1 and PH2, and the pulse counter The conveyance of the band-shaped material W is stopped at a preset value set in Pz.
[0029]
When the belt-like material W such as the second-layer carcass material is supplied and wound on the forming drum 2 by the front-rear conveyor 4a, the belt-like material W supplied on the front-rear conveyor 4a is cut as described above. After that, a pair of left and right reinforcing belt-like materials Wx are pasted on both side edges in the width direction of the belt-like material W by a predetermined distance from the tip to the rear side, and the rear end of the belt-like material W is shifted by the amount of the tip side. The length of the strip-shaped material W that has been cut into a predetermined length is made to correspond to the length.
[0030]
Note that the shift amount h of the sticking position of the tip of the reinforcing band-shaped material Wx is performed according to the set value of the pulse set in advance in the pulse counter Pz, and the set value can be arbitrarily changed. The cutting of the terminal portion is performed by operating the cutter 10 based on the set value of the number of pulses set in the pulse counter Pz.
[0031]
And while supplying and winding the 2nd layer strip | belt-shaped material W which bonded this reinforcement strip | belt-shaped material Wx on the shaping | molding drum 2, as shown in FIG.6 (b), as shown in FIG. It sticks in the state which shifted P1 and the sticking position P2 of the front-back terminal of the reinforcement strip | belt-shaped material Wx.
[0032]
That is, in the conventional bonding, as shown in FIG. 6A, the band-shaped material W and the reinforcing band-shaped material Wx are cut at the same position where they are laminated. When laminated at the position and pasted together, the thickness ta becomes thicker than the thickness t of the pasted portion of the present invention by the thickness of one reinforcing band-shaped material Wx, and the pasted portions can also be dispersed. I can't do it.
[0033]
So, in embodiment of this invention, the reinforcement strip | belt-shaped material Wx can be affixed on the position which covered the affixing position of the terminal part of the strip | belt-shaped material W, and it can prevent that a reinforcement cord is exposed from the cutting | disconnection terminal part of the strip | belt-shaped material W by this. Is.
[0034]
The pneumatic tire T manufactured with the band-shaped material W and the reinforcing band-shaped material Wx bonded together by such a method is bonded to the front and rear ends of the band-shaped material W as shown in FIGS. The position P1 is pasted in a state where the front and rear terminals of the reinforcing band-shaped material Wx are shifted from each other, and the terminal winding portion of the first turn-up band material Ws is pasted on the terminal winding section. Since bonding is performed so as to cover the end portion with the turn-down belt-shaped material WR of the layer so as to cover the reinforcing belt-shaped material Wx, the step of the bonding portion of the belt-shaped material W is reduced, and the bonding portion is dispersed. The uniformity of the tire can be improved, and the reinforcement cord can be effectively prevented from being exposed from the cut end portion of the band-shaped material W.
[0035]
【The invention's effect】
In the present invention, when two or more layers of band-shaped material cut in a fixed length as described above are wound on the forming drum, the first layer of the band-shaped material is wound around the forming drum and turned up. A pair of left and right reinforcing belt-like materials and a second layer of belt-like material pasted on the belt-like material at a predetermined distance from the front end position of the belt-like material are wound, and the length of the belt-like material at the end of winding is wound. Excessive load is not applied to the cutter of the cutting device for applying the reinforcing strip-like material so as to cover the terminal portion of the direction, and the lifetime of the cutter can be extended. Since it is pasted at the position that covers the pasting position of the end part of the belt-like material, it is possible to prevent the reinforcement cord from being exposed from the cutting end part of the carcass, further reducing the level difference of the pasting part and decentralizing the pasting part Let the tires There is an effect that it is possible to improve the uniformity.
[0036]
In addition, the reinforcing material sticking device in the tire molding servicer of the present invention is fixed on the length of the belt-like material corresponding to the approximate circumference of the molding drum on the front and rear conveyors for feeding and feeding the belt-like material to the molding drum. A strip material cutting device for cutting, a supply means for supplying a pair of left and right narrow reinforcing strip materials on both side edges in the longitudinal direction of the strip material, and both longitudinal edges of the strip in the longitudinal direction of the strip material Based on the detection value of the laminating amount detecting means for detecting the amount of shifting of the tip affixing position of the reinforcing band-shaped material with respect to the tip of the band-shaped material, the reinforcing band-shaped material The rear end position is composed of a reinforced band-shaped material cutting device that cuts at a length approximately the same as the length of the band-shaped material. The cutting position of the reinforced band-shaped material is detected by detecting the amount of shift from the tip position of the band-shaped material. Detected by means Because it cuts, it can always be cut accurately, and the sticking position of the end parts of the reinforcing band-like material is attached at the position covering the attaching position of the end part of the belt-like material, and the reinforcing cord is attached from the cutting end part of the strip-like material There is an effect of preventing exposure.
[0037]
Further, in the tire structure in which the first layer carcass member is wound around the tire bead portion and the second layer carcass member is wound outside the tire bead portion, the reinforcing belt-like material is covered so as to cover the end portion of the second layer carcass member. Since the sticking position of the end parts of the strip-shaped material is pasted at the position covering the pasting position of the end part of the strip-shaped material, it is possible to prevent the reinforcing cord from being exposed from the cut end part of the strip-shaped material. Furthermore, there is an effect that the uniformity of the tire can be improved by further reducing the level difference of the bonded portion and dispersing the bonded portion.
[Brief description of the drawings]
FIG. 1 is a schematic front view of a tire molding servicer for carrying out a method of applying a reinforcing material according to the present invention.
2 is a plan view of FIG. 1. FIG.
FIGS. 3A and 3B are explanatory diagrams of a cutting and laminating process of a reinforcing belt-like material.
FIGS. 4A and 4B are explanatory views of another embodiment of a process of cutting and bonding a reinforcing belt-like material with a liner such as polyethylene interposed. FIGS.
FIG. 5 is a cross-sectional explanatory view of a state in which a band-shaped material and a reinforcing band-shaped material are wound on a forming drum.
FIG. 6 is an explanatory view comparing the end portion bonding portion of the band-shaped material of the present invention and a conventional bonding portion on a forming drum, and (a) is a cross-sectional view of a conventional bonding portion having a large step difference. (B) is sectional drawing of the state which disperse | distributed and bonded the strip | belt-shaped material of this invention, and the reinforcement strip | belt-shaped material.
FIG. 7 is a half cross-sectional view of a pneumatic tire manufactured by the bonding method of the present invention.
8 is an enlarged cross-sectional view of the bead portion of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tire shaping | molding servicer 2 Molding drum 3 1st front-back conveyance conveyor 4a 2nd front-back conveyance conveyor 4b Conveyor conveyor 5 strip | belt-shaped material cutting device 4x Rotating shaft 6 Supply means 7 Laminating apparatus 8a Detection means 8b Shift amount detection means 9 Reinforcement belt shape Material Cutting Device 10 Cutter 11 Cutting Cylinder 12 Guide Roll 13 Guide Mechanism 13a Cylinder 13b Guide Plate 14 Feeding Mechanism 14a Ratchet Claw W Band Material 15 Cylinder 16 Lamination Roll 20a, 20b Shaft 21a, 21b Sprocket 22 Chain Wx Reinforcement Band Material h Shift Quantity Ws Turn-up strip material R Resin liner WR Turn-down strip material B Bead P1, P2, P3 Paste position of the strip material at the front and rear ends t, ta Thickness of the pasting part T Pneumatic tire PH1, P H2 optical detection means Pz pulse counter

Claims

成形ドラムの略周長に対応する長さに定尺切断された帯状材料を成形ドラム側に搬送する工程で、該帯状材料の長手方向の両側縁部上に帯状材料と略同じ長さに切断された細幅の左右一対の補強帯状材料を貼付け、この補強帯状材料を貼付けた帯状材料を成形ドラム側に供給して筒状に巻付けるタイヤ成形サービサーに於ける補強材の貼付け方法において、
前記成形ドラム上に定尺切断された２層以上の帯状材料を巻付ける際、成形ドラムに１層目の帯状材料を巻付けてターンアップした後、この１層目の帯状材料上に、帯状材料の先端位置に対して後方側に所定距離ずらせて貼付けた左右一対の補強帯状材料と２層目の帯状材料とを巻付け、巻付け終了時に帯状材料の長手方向の端末部を覆うように前記補強帯状材料を貼付けるタイヤ成形サービサーに於ける補強材の貼付け方法。In the process of transporting the strip-shaped material cut to a length corresponding to the approximate circumference of the molding drum to the molding drum side, it is cut to approximately the same length as the strip material on both side edges in the longitudinal direction of the strip-shaped material. In the method of sticking a reinforcing material in a tire molding servicer for sticking a pair of left and right reinforcing strip-like materials that are made, supplying the strip-like material stuck to the reinforcing strip-like material to the molding drum side and winding it in a cylindrical shape,
When two or more layers of band-shaped material cut into a fixed length are wound on the forming drum, the first layer of band-shaped material is wound around the forming drum and turned up, and then the band-shaped material is wound on the first layer of band-shaped material. A pair of left and right reinforcing band-like materials and a second-layer band-like material pasted at a predetermined distance rearward with respect to the tip position of the material are wound, and the end portion in the longitudinal direction of the band-like material is covered at the end of winding. A method of attaching a reinforcing material in a tire molding servicer for attaching the reinforcing band-like material to the tire.

前記帯状材料の先端に貼付ける補強帯状材料のずらし量を検出して、補強帯状材料の端末部を帯状材料の定尺切断した長さに対応して切断する請求項１に記載のタイヤ成形サービサーに於ける補強材の貼付け方法。The tire molding servicer according to claim 1 , wherein a shift amount of the reinforcing band-shaped material to be attached to the tip of the band-shaped material is detected, and a terminal portion of the reinforcing band-shaped material is cut in accordance with the length of the band-shaped material cut into a fixed length. How to paste the reinforcing material in

前記成形ドラム上で貼付ける補強帯状材料の端末部同志の貼付け位置は、帯状材料の長手方向の端末部の貼付け位置を覆った位置で貼付ける請求項１または２に記載のタイヤ成形サービサーに於ける補強材の貼付け方法。 3. The tire molding servicer according to claim 1, wherein the application positions of the end portions of the reinforcing band-shaped material to be applied on the forming drum are applied at positions covering the application positions of the end portions in the longitudinal direction of the band-shaped material. How to apply the reinforcing material.

成形ドラムに帯状材料を搬送供給する前後搬送コンベヤ上に、帯状材料を成形ドラムの略周長に対応する長さに定尺切断する帯状材料切断装置と、前記帯状材料の長手方向の両側縁部上に左右一対の細幅の補強帯状材料を供給する供給手段と、該補強帯状材料を帯状材料の長手方向の両側縁部上に貼付ける貼合わせ装置と、前記帯状材料の先端に対して補強帯状材料の先端貼付け位置のずらし量を検出するずらし量検出手段と、このずらし量検出手段の検出値に基づき、補強帯状材料の後端位を帯状材料の長さと略同じ長さで定尺切断する補強帯状材料切断装置とで構成して成るタイヤ成形サービサーに於ける補強材の貼付け装置。 A belt-shaped material cutting device that cuts the belt-shaped material to a length corresponding to the substantially circumferential length of the molding drum on the front and rear conveyance conveyors that convey and supply the belt-shaped material to the molding drum, and both side edges in the longitudinal direction of the belt-shaped material Supply means for supplying a pair of left and right narrow reinforcing strip materials, a laminating device for pasting the reinforcing strip materials on both side edges in the longitudinal direction of the strip materials, and reinforcing the tip of the strip materials Based on the detection value of the shift amount detection means for detecting the shift amount of the band material's tip application position, the rear end position of the reinforcing strip material is cut to a length approximately the same as the length of the strip material. A reinforcing material sticking device in a tire molding servicer comprising a reinforcing belt-shaped material cutting device.

前記前後搬送コンベヤは、成形ドラム上に供給する２層目の帯状材料の前後搬送コンベヤである請求項４に記載のタイヤ成形サービサーに於ける補強材の貼付け装置。5. The reinforcing material sticking device according to claim 4 , wherein the front and rear transport conveyor is a front and rear transport conveyor for a second layer of belt-shaped material supplied onto a forming drum.