JP2004142219A - Device for joining side edge of cord ply - Google Patents

Device for joining side edge of cord ply Download PDF

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Publication number
JP2004142219A
JP2004142219A JP2002308763A JP2002308763A JP2004142219A JP 2004142219 A JP2004142219 A JP 2004142219A JP 2002308763 A JP2002308763 A JP 2002308763A JP 2002308763 A JP2002308763 A JP 2002308763A JP 2004142219 A JP2004142219 A JP 2004142219A
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JP
Japan
Prior art keywords
joining
leveling
ply
side edge
cord ply
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.)
Pending
Application number
JP2002308763A
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Japanese (ja)
Inventor
Naomi Niitsuma
新妻 直美
Narishiro Yoshioka
吉岡 成城
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.)
Sumitomo Rubber Industries Ltd
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Sumitomo Rubber Industries 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.)
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Publication date
Application filed by Sumitomo Rubber Industries Ltd filed Critical Sumitomo Rubber Industries Ltd
Priority to JP2002308763A priority Critical patent/JP2004142219A/en
Publication of JP2004142219A publication Critical patent/JP2004142219A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To efficiently level off a heave formed in a joint part in a short time and with superior flatness. <P>SOLUTION: This device comprises a receiver 5 which is fitted to a support piece 26 movable between the side edges E and E of a cord ply P and receives the lower face of the side edge E, a joining means 7 which has a joining fitment 41 obtained by combining two pieces 6 and 6 together and joins the side edges E and E by getting them close to each other and a levelling-off means 3 which levels off the joint part J. The levelling-off means 3 is equipped with levelling-off plates 60U and 60L which hold the joint part J in between and press the latter and each of the levelling-off plates 60U and 60L has a warming means 65 for warming the joint part J. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、コードプライの両側縁部を突き合わせて接合する際、接合部に生じる盛り上がりを優れた平坦性を有して短時間に効率よく均すことができるコードプライの側縁部接合装置に関する。
【0002】
【従来の技術】
例えばカーカスプライ形成用のプライ材料A0では、通常、図12に示す如く、コードを長手方向に平行配列したトップ反B0を、そのロール状体BRから巻き戻しつつタイヤの種類やサイズ等によって定まるカーカス巾に対応した長さでいったん切断し、そのトップ反切断片B1のコードに沿う側縁部Eを順次接合することにより、所定巾の前記プライ材料A0が形成される。
【0003】
そして、特許文献1には、このようなトップ反切断片B1であるコードプライPの側縁部Eを接合するための接合装置が開示されている。
【0004】
【特許文献1】
特開2001−105508号公報
【0005】
この接合装置は、2つのコマ体を用いてコードプライPの側縁部E、Eを近寄せながら接合するため、接合部Jには、図13に示すような盛り上がり部J1を招いてしまう。この盛り上がり部J1は、前記コードプライPをカーカスプライとして使用したときには、タイヤ加硫成形時のコード間の広がり(コードピッチ間隔)に大きな差が生じ、サイドウォール表面にデントを発生させるという問題がある。そこで、前記接合装置では、この盛り上がり部J1を平坦に均すため、接合部Jの上面を押さえ付けながら転動する均しローラn1と、接合部Jの下面を受けるとともに均しに際して接合部Jを加温する熱板である受け板n2とからなる均し手段nを設けている。
【0006】
【発明が解決しようとする課題】
このような均し手段nでは、接合部Jの平坦性を高めるために、均しローラn1の転動速度を遅くすることが必要となるが、そのために均し時間が接合時間よりも多くかかるなど生産性を損ねるという問題がある。しかも、接合部Jの下面側からの加温となり上面側を直接加温することができないため、接合部Jの平坦性を充分に高めることができず、品質向上の妨げともなっていた。
【0007】
そこで本発明は、均し手段を、接合部を挟んで押さえ付ける上下の均し板で形成しかつ上下の均し板の双方に加温手段を設けることを基本として、接合部を優れた平坦性を有して短時間に均すことができ、接合製品の生産性と製品品質とを向上しうるコードプライの側縁部接合装置の提供を目的としている。
【0008】
【課題を解決するための手段】
前記目的を達成するために、本願請求項1の発明は、平行に引き揃えられかつゴム被覆したコードからなるコードプライを、前記コードに沿う各側縁部で互いに隣り合わせて接合するコードプライの側縁部接合装置であって、
前記コードプライの一端から他端に前記側縁部間を移動しうる支持片に取り付けられ、かつ前記コードプライの側縁部下面を受ける受け面を有する受片を設けた受体と、前記支持片の前記移動方向後側で保持されるとともに前記両側縁部を近寄せて接合することにより盛り上がり部を有する接合部を形成する接合手段と、この接合部を押さえ付けて平坦に均す均し手段とを具えるとともに、
前記接合手段は、回転軸芯廻りのコーン面を有する2つのコマ体が、前記コーン面の最大径部を近づけしかも2つのコマ体の前記コーン面をなす各1つの母線が前記受け面と平行となる角度で前記回転軸芯を交わらせて配された接合具を有し、
しかも前記均し手段は、前記接合部を上下に挟んで押さえ付ける上の均し板と下の均し板とを有するとともに、該上下の均し板は、均しに際して前記接合部を加温する加温手段を具えることを特徴としている。
【0009】
又請求項2の発明では、前記上下の均し板は、前記コードプライの巾を越える長尺な板体からなり、かつ昇降手段によって昇降自在に支持されることを特徴としている。
【0010】
【発明の実施の形態】
以下、本発明の実施の一形態を、図示例とともに説明する。
図1、2において、本発明のコードプライの側縁部接合装置1(以下に接合装置1という)は、支持片26に取り付けられかつコードプライPの側縁部E下面を受ける受体5と、2つのコマ体6、6を組合わせた接合具41を有し前記側縁部E、E間を近寄せて接合する接合手段7と、接合部Jを押さえ付けて平坦に均す均し手段3とを具える。
【0011】
なお本例では、前記接合装置1が、コンベヤ4上で搬送される複数のコードプライPの側縁部E、E間を互いに接合し、これによってカーカスプライ形成用の長尺なプライ材料A0を形成する場合を例示している。すなわち、本例では、前記コードプライPは、前記図12の如く、トップ反B0をカーカス巾に対応した長さで切断してなるトップ反切断片B1からなり、従って、平行に引き揃えられかつトッピングゴムによりゴム被覆されたコードCの配列体として形成されるとともに、各コードプライPは、前記コードCに沿う各側縁部Eを向かい合わせて搬送方向に沿って一列に並べてコンベヤ4上に載置される。
【0012】
また前記コンベヤ4は、本例では、乗り継ぎ可能に配した第1、第2のコンベヤ部4A、4Bを含み、第1のコンベヤ部4A上に、前記受体5と接合手段7とを具える接合装置本体1Aを設けるとともに、第1、第2のコンベヤ部4A、4B間に、前記均し手段3を具える接合装置副部1Bを設けている。前記コンベヤ部4A、4Bとしては、間欠送りしうるベルトコンベヤが好適に使用できる。
【0013】
次に、前記接合装置本体1Aは、前記受体5と接合手段7とを、側縁部Eと平行な向き(以下にF方向という)に移動しうる第1の走行手段17によって支持している。なお前記第1の走行手段17は、レール9を有する案内具10と、このレール9を移動する走行具11とを具える。
【0014】
また前記案内具10は、本例では、前記コンベヤ4上を跨るフレーム12に支持されて前記F方向にのびるレール9と、前記走行具11をレール9の後端位置Y1から前端位置Y2までの間で前後に移動させる駆動器13とを具える。
【0015】
前記駆動器13は、前記フレーム12に枢支されたプーリー等の前後の鎖車15、15と、この鎖車15、15間に巻装されるタイミングベルト等の無端連紐16とを有し、一方の鎖車15には入切りクラッチを介してモータM1が接続するとともに、他方の鎖車15には例えばロータリエンコーダ等の回転角度測定器18が連係する。又前記無端連紐16の下走行線には、前記走行具11からのびる突出片19Aが固定される。従って、前記駆動器13は、モータM1による無端連紐16の周回とともに走行具11を前後に移動でき、かつクラッチの切り動作によって前記後端位置Y1及び前端位置Y2で安定して停止するとともに、前記測定器18によって走行具11の現在位置を精度良く検出できる。
【0016】
また前記走行具11は、前記レール9に係合する係合溝14を上端に設けた走行体19と、この走行体19に昇降具20を介して上下動可能に支持される昇降台21とを具える。
【0017】
前記昇降具20は、図3、4に示すように、前記走行体19の前面部に設ける昇降ガイド22と、前記走行体19の側縁近傍に取付け金具23を介して取付きかつロッド端を下方に向けた空気式/油圧式等のシリンダ25とを具える。又前記昇降台21は、ブロック状の基台21A後面部に、前記昇降ガイド22に係合して上下に案内される係合片21Bを取付ける。又基台21A下縁には、前記シリンダ25のロッド端が連結する底片21Cが後方に向かって突設する。又前記基台21Aの前面には、前記F方向と直交する向きの垂直面S1に対して、例えば11〜13度の角度αで前傾斜する取付け面21Sが形成され、この取付け面21Sに、前記受体5と接合手段7とが支持される。
【0018】
前記受体5は、図4、5、6に示すように、前記側縁部E、E間を通って上下に伸びる支持片26の下端に、板状の受片27を設けたT字状をなし、該受片27が前記コードプライPと搬送面との間に介在することによって、受片27上面に、コードプライPの側縁部E下面を受ける平滑な受け面27Sを形成する。
【0019】
なお受片27は、その後端部分が前記支持片26から後方に延出するF方向に長い縦長矩形板状をなし、この延出部分Z上に前記接合手段7を配設する。又受体5は、前記受片27下面に、この受片27を搬送面上で円滑に移動させる小径な転動ローラ29を複数箇所(本例では3箇所)に形成するとともに、前記支持片26の両側面には、前記受け面27Sとの間でコードプライPの各側縁部Eを案内する案内ローラ30を設けている。又支持片26及び受片27の各前縁は、前方に向かって先細状に傾斜し、受体5の前方移動を容易としている。又受体5は、本例では、プライ挟持用昇降具32を介して前記昇降台21に取付く。
【0020】
前記プライ挟持用昇降具32は、前記取付け面21Sに、ブロック状の台座33を介して支持される矩形板状の基片34を有し、この基片34前面には搬送面に向かってのびるレール部34Aが形成される。又台座33上端には取付板を介して空気式/油圧式等のシリンダ35が固定され、その下向きのロッド端には、前記レール部34Aに係合して上下動可能に案内される移動片36が取付く。又移動片36には取付部36Aが前方に突出し、この取付部36Aに前記受体5の支持片26がボルト固定される。なお本例では、前記基片34には、その側面から下方にびるアーム37下端に、前記延出部分Zにおける受け面27Sと平行に向き合う挟みローラ39が配設され、前記シリンダ35による受体5の上昇移動によって、受け面27Sと挟みローラ39との間でコードプライPの側縁部Eを所定圧力で挟持してこの側縁部Eが後方に設ける接合手段7のコマ体6にうまく導かれるように案内する。
【0021】
前記接合手段7は、前記走行具11が前方移動するに際して、支持片26を通過する両側縁部E、Eを互いに突き合わせて接合する手段であって、前記挟みローラ39の後側で前記取付け面21Sに支持される接合具41を有する。
【0022】
前記接合具41は、図4、7、8に示すように、回転軸芯Nの廻りのコーン面43を有する2つのコマ体6、6を具え、このコマ体6、6は、前記コーン面43の最大径部43Aを互いに近づけ、しかも各コーン面43をなす1つの母線44が前記受け面27Sと平行となる角度、すなわち最下の母線44が前記受け面27Sと平行となる角度で前記回転軸芯Nを交わらせて配している。
【0023】
本例では、前記コマ体6は、前記最大径部43Aに、互いに噛合する歯部45を刻設した歯車であって、一方のコマ体6は、図7、8に示すように、前記取付け面21Sに例えばL字状の金具46を介して固定されるエアーモータ等のモータM2の出力軸に支持されるとともに、他方のコマ体6は、取付け面21S上の例えばコ字状の金具47を介して枢支される。前記金具47は、モータM2の出力軸との当接を避ける溝部47Aを凹設したブロック状をなし、その一端から突出する支軸49で前記他方のコマ体6を可回転に枢着する。又前記コマ体6は、図9に示すように、前記各最大径部43Aの輪部円50の中間を通る中間面S2を前記F方向かつ側縁部E、E間の中央に位置させて配している。
【0024】
従って、各コマ体6は、前記モータM2の駆動によって、回転軸芯N回りで互いに噛み合って同速度で回転するとともに、回転の際、コーン面43と受け面27Sとの間で挟持する前記側縁部E、Eを中間面S2に向かって付勢しつつ(近寄せつつ)後方に押進する。このものは側縁部E、Eの上下面の双方を挟持しているため、前記付勢力を端縁に至り確実に作用させることができ側縁部E、E間の圧接力を高めて接合強度を大巾に向上できる。
【0025】
又コマ体6のコーン面43がコードプライPと接する扇型の接触形状51を図10に示すように、前記中間面S2に向かって寄せられるコードC1〜Cnの変位距離L1〜Lnは、側縁部Eから離れるコードほど小であり、従って、コマ体6と接触する部分と非接触の部分との間のコードの乱れも緩和できる。
【0026】
又本例では、前記接合具41は、各回転軸芯N、Nを含む平面S3を、前記垂直面S1に対して前記αと実質的に等しい11〜13度の角度βで前傾斜させている。これは、前記最大径部43Aの接点Rの後方側では、コ−ン面43は中間面S2から離れる側に回転し、その結果、接合された側縁部E間を逆に引き離す作用をするからである。従って、前記角度βを11〜13度の範囲とすることにより、引き寄せる力及び量が適正化され、より高い接合強度を発揮することができる。
【0027】
次に、前記接合装置副部1Bは、図1、11に示す如く、本例では、前記第1、第2のコンベヤ部4A、4B間に介在し前記接合部Jを平坦に均す均し手段3を具える。
【0028】
この均し手段3は、前記接合部Jを上下に挟んで押さえ付ける上の均し板60Uと、下の均し板60Lとを有し、夫々、昇降手段61によって昇降自在に支持される。本例では、上下の均し板60U、60Lが、夫々、前記コードプライPの巾を越える1本の長尺な板体からなる場合を例示する。
【0029】
また前記昇降手段61は、例えばロッド端に均し板60U、60Lを取り付けた空気式/油圧式等のシリンダからなり、ロッドの伸張によって上下の均し板60U、60Lを進出せしめ、その間で前記接合部Jを所定の圧力、例えば9.8〜49.0kPaの範囲の圧力で挟み込み、接合部Jを平坦化する。又ロッドの縮小によって上下の均し板60U、60Lが接合部Jから離間する待機位置まで後退させる。なお図11中の符号62Aは上下の均し板60U、60Lに突設された垂直なガイド軸、符号62Bはフレームに取り付き各ガイド軸62Aを挿通して案内する案内筒62Bであり、これによって上下の均し板60U、60Lを互いに平行に案内するガイド手段62を構成している。
【0030】
又上下の均し板60U、60Lは、均しに際して前記接合部Jを加温し、コードプライPのゴムを軟化させる加温手段65を具える。この加温手段65として、本例では均し板60U、60L内に内蔵される電気ヒータの場合を例示しているが、均し板60U、60L内で、蒸気、加熱水、又は加熱オイル等の熱媒体を循環させても良い。なお加温手段65では、前記均し板60U、60Lの各均し面での表面温度を、60〜70゜Cの範囲に設定するのが好ましい。
【0031】
このように本発明は、前記均し手段3を、加温手段65を具える上下の長尺な均し板60U、60Lで形成している。従って、接合部Jを広範囲に亘って挟んで押さえ付けることができ、しかも押さえ付けの際、接合部Jをその上面側、下面側の双方から同時に効率よく加温できる。その結果、接合部Jの均し時間を大幅に短縮しうるとともに、均し後の接合部Jの平坦性を充分に高めることができ、接合製品の生産性向上および品質向上を達成することが可能となる。
【0032】
なお前記均し板60U、60Lとしては、長さ方向に分割した複数本(例えば2本或いは3本の)の分割板体であってもよく、このとき各分割板体は、適宜の昇降手段62に支持させる。
【0033】
以上、本発明の特に好ましい実施形態について詳述したが、本発明は図示の実施形態に限定されることなく、種々の態様に変形して実施しうる。
【0034】
【実施例】
本発明に係わる接合装置を用いてコードプライを接合するとともに、その接合体をカーカスプライに用いた空気入りタイヤ(タイヤサイズ11R22.5)を作成した。そしてコードプライ接合時における接合部Jの均し時間を測定するとともに、作成されたタイヤのデントの大きさ、及びデントの分部におけるカーカスコードのピッチ間隔のバラツキを測定した。なお比較例として、特許文献1に記載のごとく均しローラと熱板である受け板とで均し手段を形成した接合装置を用い、同様のタイヤを作成した。
【0035】
(1)デントの大きさ:
リム(8.25×22.5)、内圧(700kPa)の条件で、タイヤのサイドウォール部に生じるデントの最大深さを10ヶ所の位置で測定し、その平均値および標準偏差(σ)を求めた。平均値および標準偏差(σ)が小さいほど優れている。
【0036】
(2)カーカスコードのピッチ間隔のバラツキ:
タイヤを解体し、前記10ヶ所のデントの位置でのカーカスコードのピッチ間隔Pjと、デント以外の位置でのピッチ間隔Poとを測定した。そして比Pj/Poを求め、その平均値および標準偏差(σ)を求めた。平均値が1に近いほど、および標準偏差(σ)が小さいほど優れている。
【0037】
【表1】

Figure 2004142219
【0038】
【発明の効果】
叙上の如く本発明は、均し手段を、接合部を挟んで押さえ付ける上下の均し板で形成しかつ上下の均し板の双方に加温手段を設けているため、接合部の均し時間を大幅に短縮しうるとともに、均し後の接合部の平坦性を充分に高めることができ、接合製品の生産性向上および品質向上を達成することが可能となる。
【図面の簡単な説明】
【図1】本発明の接合装置の一実施例を示す正面図である。
【図2】接合装置本体の側面図である。
【図3】走行具を示す斜視図である。
【図4】走行具を受体及び接合手段とともに示す側面図である。
【図5】プライ挟持用昇降具を示す斜視図である。
【図6】受け体を示す斜視図である。
【図7】プライ挟持用昇降具及び接合手段を示す側面図である。
【図8】コマ体の取付き状態を示す斜視図である。
【図9】コマ体の噛合状態を示す側面図である。
【図10】コマ体のコードプライとの接触形状を模式的に示す略図である。
【図11】接合装置副部を均し手段とともに示すの側面図である。
【図12】カーカスプライ用のプライ材料の形成を示す線図である
【図13】従来技術の問題点を説明する線図である。
【符号の説明】
3   均し手段
5   受体
6   コマ体
7   接合手段
26  支持片
27  受片
27S 受け面
41  接合具
43  コーン面
43A 最大径部
44  母線
60U 上の均し板
60L 下の均し板
61  昇降手段
65  加温手段
C   コード
E   側縁部
J   接合部
N   回転軸芯
P   コードプライ[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an apparatus for joining side edges of a cord ply, which has excellent flatness and can evenly and efficiently equalize a bulge generated at a joining portion when joining and joining both side edges of a cord ply in a short time. .
[0002]
[Prior art]
For example, in the ply material A0 for forming a carcass ply, as shown in FIG. 12, the top anti-B0 in which the cords are arranged in parallel in the longitudinal direction is usually rewound from the roll-shaped body BR while the carcass determined by the type and size of the tire. The ply material A0 having a predetermined width is formed by cutting once at a length corresponding to the width and sequentially joining the side edges E along the cord of the top anti-cut piece B1.
[0003]
Patent Literature 1 discloses a joining device for joining a side edge E of a cord ply P, which is such a top anti-cut piece B1.
[0004]
[Patent Document 1]
JP 2001-105508 A
Since this joining device joins the side edges E, E of the cord ply P using two frame members while approaching each other, the joint J has a raised portion J1 as shown in FIG. When the cord ply P is used as a carcass ply, the raised portion J1 has a problem that a large difference occurs in the spread (cord pitch interval) between cords at the time of tire vulcanization molding, and dents are generated on the sidewall surface. is there. Therefore, in the joining apparatus, in order to level the raised portion J1, the leveling roller n1 that rolls while pressing the upper surface of the joined portion J, and the lower surface of the joined portion J and the joining portion J1 when leveling. And a receiving plate n2, which is a heating plate for heating the platen, is provided.
[0006]
[Problems to be solved by the invention]
In such leveling means n, it is necessary to reduce the rolling speed of the leveling roller n1 in order to increase the flatness of the joint J, but the leveling time is longer than the bonding time. There is a problem that productivity is impaired. In addition, since heating is performed from the lower surface side of the joint J and the upper surface side cannot be directly heated, the flatness of the joint J cannot be sufficiently improved, which hinders quality improvement.
[0007]
Therefore, the present invention is based on the fact that the leveling means is formed by upper and lower leveling plates that press and hold the junction, and that heating means are provided on both the upper and lower leveling plates, and that the bonding portion has an excellent flatness. An object of the present invention is to provide an apparatus for joining side edges of a cord ply, which can be leveled in a short period of time and can improve the productivity and product quality of a joined product.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the invention of claim 1 of the present application is directed to a side of a cord ply which joins a cord ply consisting of cords which are aligned and rubber-coated in parallel and adjacent to each other at respective side edges along the cord. An edge joining device,
A receiver attached to a support piece movable from one end to the other end of the cord ply between the side edges and having a receiving surface for receiving a lower surface of the side edge of the code ply; A joining means which is held at the rear side of the piece in the moving direction and which joins the side edges close to each other to form a joint having a swelling portion; With means,
In the joining means, two top bodies each having a cone surface around a rotation axis center may make the maximum diameter portion of the cone surface close to each other, and each one generatrix forming the cone surface of the two top bodies may be parallel to the receiving surface. Having a connector arranged so as to intersect the rotation axis at an angle,
In addition, the leveling means has an upper leveling plate and a lower leveling plate that sandwich and hold the joining portion up and down, and the upper and lower leveling plates heat the joining portion when leveling. It is characterized by comprising a heating means.
[0009]
Further, the invention according to claim 2 is characterized in that the upper and lower leveling plates are formed of a long plate body exceeding the width of the cord ply, and are supported by a lifting means so as to be able to move up and down.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to illustrated examples.
1 and 2, a cord ply side edge joining device 1 (hereinafter referred to as a joining device 1) of the present invention includes a receiver 5 attached to a support piece 26 and receiving a lower surface of a side edge E of a cord ply P. A joining means 7 having a joining tool 41 in which the two frame bodies 6 are combined, and joining the side edges E and E close to each other; Means 3.
[0011]
In this example, the joining device 1 joins the side edges E of the plurality of cord plies P conveyed on the conveyor 4 to each other, thereby forming a long ply material A0 for forming a carcass ply. The case of forming is illustrated. That is, in this example, as shown in FIG. 12, the cord ply P is composed of a top anti-cut piece B1 obtained by cutting the top anti-B0 at a length corresponding to the carcass width, and is thus aligned in parallel and The cord ply P is formed as an array of cords C coated with topping rubber, and each cord ply P is arranged on the conveyor 4 in a line along the conveying direction with the side edges E along the cords C facing each other. Is placed.
[0012]
Further, in this example, the conveyor 4 includes first and second conveyor portions 4A and 4B which are arranged so as to be transitable, and includes the receiver 5 and the joining means 7 on the first conveyor portion 4A. A joining device main body 1A is provided, and a joining device sub-portion 1B having the leveling means 3 is provided between the first and second conveyor portions 4A and 4B. As the conveyor sections 4A and 4B, a belt conveyor capable of intermittent feeding can be suitably used.
[0013]
Next, the joining device main body 1A supports the receiving body 5 and the joining means 7 by the first traveling means 17 which can move in a direction parallel to the side edge E (hereinafter referred to as F direction). I have. The first running means 17 includes a guide 10 having a rail 9 and a running tool 11 moving on the rail 9.
[0014]
In this example, the guide 10 is supported by a frame 12 straddling the conveyor 4 and extends in the F direction. The guide 9 extends the rail 9 from the rear end position Y1 to the front end position Y2 of the rail 9. And a driver 13 for moving back and forth between them.
[0015]
The drive unit 13 has front and rear sprockets 15, 15 such as pulleys pivotally supported by the frame 12, and endless continuous cords 16 such as a timing belt wound between the sprockets 15, 15. A motor M1 is connected to one of the sheaves 15 via an on / off clutch, and a rotation angle measuring device 18 such as a rotary encoder is connected to the other sheave 15. A projecting piece 19A extending from the traveling tool 11 is fixed to a lower traveling line of the endless continuous cord 16. Therefore, the driving device 13 can move the traveling tool 11 back and forth with the rotation of the endless continuous cord 16 by the motor M1, and stably stops at the rear end position Y1 and the front end position Y2 by disengaging a clutch. The measuring device 18 can accurately detect the current position of the traveling tool 11.
[0016]
The traveling tool 11 includes a traveling body 19 provided with an engagement groove 14 at the upper end for engaging with the rail 9, a lifting platform 21 supported by the traveling body 19 via a lifting tool 20 so as to be vertically movable. With.
[0017]
As shown in FIGS. 3 and 4, the lifting / lowering tool 20 is attached to a lifting / lowering guide 22 provided on the front surface of the traveling body 19 via a mounting bracket 23 near a side edge of the traveling body 19, and has a rod end. And a cylinder 25 of a pneumatic / hydraulic type or the like directed downward. The lifting table 21 has an engagement piece 21B which is engaged with the lifting guide 22 and guided up and down, on the rear surface of the block-shaped base 21A. At the lower edge of the base 21A, a bottom piece 21C to which the rod end of the cylinder 25 is connected protrudes rearward. On the front surface of the base 21A, there is formed a mounting surface 21S which is inclined forward at an angle α of, for example, 11 to 13 degrees with respect to a vertical surface S1 perpendicular to the F direction. The receiver 5 and the joining means 7 are supported.
[0018]
As shown in FIGS. 4, 5, and 6, the receiving member 5 is provided with a plate-shaped receiving piece 27 at a lower end of a supporting piece 26 extending vertically between the side edges E and E. The receiving piece 27 is interposed between the code ply P and the transport surface, so that a smooth receiving surface 27S for receiving the lower surface of the side edge E of the code ply P is formed on the upper surface of the receiving piece 27.
[0019]
The receiving piece 27 has a vertically long rectangular plate shape extending in the direction F extending rearward from the support piece 26 at the rear end thereof, and the joining means 7 is disposed on the extending portion Z. The receiving member 5 has a plurality of (three in this example) small-diameter rolling rollers 29 on the lower surface of the receiving piece 27 for smoothly moving the receiving piece 27 on the transport surface. Guide rollers 30 for guiding each side edge E of the cord ply P with the receiving surface 27S are provided on both side surfaces of 26. In addition, the front edges of the support piece 26 and the receiving piece 27 are tapered toward the front to facilitate the forward movement of the receiver 5. Further, in this example, the receiver 5 is attached to the elevating table 21 via a ply nipping elevating tool 32.
[0020]
The ply nipping elevator 32 has a rectangular plate-shaped base 34 supported on the mounting surface 21S via a block-shaped pedestal 33, and the front of the base 34 extends toward the transport surface. A rail portion 34A is formed. A pneumatic / hydraulic type cylinder 35 is fixed to the upper end of the pedestal 33 via a mounting plate, and a moving piece which is engaged with the rail portion 34A and is vertically movably guided is provided at a downward rod end thereof. 36 is attached. A mounting portion 36A projects forward from the moving piece 36, and the support piece 26 of the receiver 5 is bolted to the mounting portion 36A. In this example, the base piece 34 is provided at its lower end with an arm 37 extending downward from the side surface thereof, with a sandwiching roller 39 facing in parallel with the receiving surface 27S of the extending portion Z. 5, the side edge E of the cord ply P is nipped between the receiving surface 27S and the nipping roller 39 at a predetermined pressure, and the side edge E is properly attached to the frame 6 of the joining means 7 provided at the rear. Guide to be guided.
[0021]
The joining means 7 is means for abutting and joining both side edges E, E passing through the support piece 26 when the traveling tool 11 moves forward, and the attaching surface is provided at the rear side of the sandwiching roller 39. It has a connector 41 supported by 21S.
[0022]
As shown in FIGS. 4, 7 and 8, the joining tool 41 includes two top bodies 6 and 6 having a cone surface 43 around the rotation axis N. 43 at an angle at which one bus bar 44 forming each cone surface 43 is parallel to the receiving surface 27S, that is, at an angle at which the lowest bus bar 44 is parallel to the receiving surface 27S. The rotating shaft cores N are arranged to cross each other.
[0023]
In this example, the top body 6 is a gear in which teeth 45 that mesh with each other are engraved on the maximum diameter portion 43A, and one top body 6 is attached to the mounting portion as shown in FIGS. An output shaft of a motor M2 such as an air motor fixed to the surface 21S via, for example, an L-shaped bracket 46 is supported by the output shaft of the motor M2, and the other frame body 6 is, for example, a U-shaped bracket 47 on the mounting surface 21S. Is pivoted through. The metal fitting 47 is formed in a block shape in which a groove 47A for avoiding contact with the output shaft of the motor M2 is formed in a concave shape, and the other frame body 6 is rotatably pivoted by a support shaft 49 protruding from one end thereof. As shown in FIG. 9, the top body 6 has an intermediate surface S2 passing through the middle of the loop circle 50 of each of the maximum diameter portions 43A positioned in the F direction and the center between the side edges E, E. I have arranged.
[0024]
Accordingly, each of the frame bodies 6 rotates at the same speed while being engaged with each other around the rotation axis N by the driving of the motor M2, and at the time of rotation, the side sandwiched between the cone surface 43 and the receiving surface 27S. The edges E, E are pushed rearward while being urged (closer) toward the intermediate surface S2. Since this material sandwiches both the upper and lower surfaces of the side edges E, E, the urging force can be reliably applied to the edges so that the pressure contact force between the side edges E, E is increased to join. Strength can be greatly improved.
[0025]
Also, as shown in FIG. 10, the displacement distances L1 to Ln of the cords C1 to Cn brought toward the intermediate surface S2 are different from each other, as shown in FIG. The smaller the cord is from the edge E, the smaller the cord is. Therefore, the disturbance of the cord between the portion in contact with the frame body 6 and the non-contact portion can be reduced.
[0026]
Further, in this example, the connector 41 tilts the plane S3 including the rotation axes N, N forward at an angle β of 11 to 13 degrees substantially equal to the α with respect to the vertical plane S1. I have. This is because, on the rear side of the contact point R of the maximum diameter portion 43A, the cone surface 43 rotates away from the intermediate surface S2, and as a result, acts to separate the joined side edge portions E in reverse. Because. Therefore, by setting the angle β in the range of 11 to 13 degrees, the pulling force and amount are optimized, and higher bonding strength can be exhibited.
[0027]
Next, as shown in FIGS. 1 and 11, the joining device sub-portion 1B is interposed between the first and second conveyor portions 4A and 4B in this example to level the joining portion J flat. Means 3 is provided.
[0028]
The leveling means 3 has an upper leveling plate 60U and a lower leveling plate 60L which sandwich and hold the joining portion J up and down, and are supported by the raising / lowering means 61 so as to be able to move up and down. In this example, the case where each of the upper and lower leveling plates 60U and 60L is formed of one long plate exceeding the width of the cord ply P is illustrated.
[0029]
The elevating means 61 is composed of, for example, a pneumatic / hydraulic type cylinder having leveling plates 60U and 60L attached to the rod end, and allows the upper and lower leveling plates 60U and 60L to advance by extending the rod. The joint J is sandwiched by a predetermined pressure, for example, a pressure in the range of 9.8 to 49.0 kPa, to flatten the joint J. Also, by reducing the rod, the upper and lower leveling plates 60U and 60L are retracted to the standby position where they are separated from the joint J. Reference numeral 62A in FIG. 11 denotes a vertical guide shaft protruding from the upper and lower leveling plates 60U and 60L, and reference numeral 62B denotes a guide cylinder 62B attached to a frame and guided by passing each guide shaft 62A. The guide means 62 guides the upper and lower leveling plates 60U and 60L in parallel with each other.
[0030]
The upper and lower leveling plates 60U and 60L each include a heating unit 65 that heats the joint J and softens the rubber of the cord ply P when leveling. In this example, the heating means 65 is an electric heater built in the leveling plates 60U and 60L. However, in the leveling plates 60U and 60L, steam, heating water, heating oil, or the like is used. May be circulated. In the heating means 65, it is preferable to set the surface temperature on each leveling surface of the leveling plates 60U and 60L in a range of 60 to 70 ° C.
[0031]
As described above, according to the present invention, the leveling means 3 is formed of the upper and lower long leveling plates 60U and 60L having the heating means 65. Therefore, the joint J can be sandwiched and pressed over a wide range, and at the time of pressing, the joint J can be simultaneously and efficiently heated from both the upper surface side and the lower surface side. As a result, the smoothing time of the joint J can be significantly reduced, and the flatness of the joint J after the smoothing can be sufficiently increased, thereby improving the productivity and the quality of the joined product. It becomes possible.
[0032]
The leveling plates 60U and 60L may be a plurality of (for example, two or three) divided plate members divided in the length direction, and at this time, each divided plate member may be provided with appropriate lifting / lowering means. 62.
[0033]
As described above, particularly preferred embodiments of the present invention have been described in detail. However, the present invention is not limited to the illustrated embodiments, and can be implemented in various forms.
[0034]
【Example】
The cord ply was joined using the joining apparatus according to the present invention, and a pneumatic tire (tire size 11R22.5) using the joined body as a carcass ply was produced. Then, the leveling time of the joint J at the time of the cord ply joining was measured, and the size of the dent of the produced tire and the variation of the pitch interval of the carcass cord in the part of the dent were measured. As a comparative example, a similar tire was produced using a joining device in which a leveling means was formed by a leveling roller and a receiving plate as a hot plate as described in Patent Document 1.
[0035]
(1) Dent size:
Under the conditions of the rim (8.25 × 22.5) and the internal pressure (700 kPa), the maximum depth of the dent generated in the sidewall portion of the tire is measured at 10 positions, and the average value and the standard deviation (σ) are determined. I asked. The smaller the average value and the standard deviation (σ), the better.
[0036]
(2) Variation of carcass cord pitch interval:
The tire was dismantled, and the pitch intervals Pj of the carcass cords at the ten dent positions and the pitch intervals Po at positions other than the dent were measured. Then, the ratio Pj / Po was determined, and the average value and the standard deviation (σ) were determined. The closer the average value is to 1, and the smaller the standard deviation (σ), the better.
[0037]
[Table 1]
Figure 2004142219
[0038]
【The invention's effect】
As described above, according to the present invention, since the equalizing means is formed by the upper and lower equalizing plates that hold the joint portion therebetween and pressed, and the upper and lower equalizing plates are provided with the heating means, the equalizing portion of the joint portion is provided. As a result, the flatness of the joined portion after leveling can be sufficiently improved, and the productivity and quality of the joined product can be improved.
[Brief description of the drawings]
FIG. 1 is a front view showing one embodiment of a joining apparatus of the present invention.
FIG. 2 is a side view of a joining device main body.
FIG. 3 is a perspective view showing a traveling tool.
FIG. 4 is a side view showing the traveling tool together with a receiver and a joining means.
FIG. 5 is a perspective view showing a lifting / lowering device for holding a ply.
FIG. 6 is a perspective view showing a receiving body.
FIG. 7 is a side view showing a lifting and lowering device for holding a ply and a joining means.
FIG. 8 is a perspective view showing an attached state of a frame body.
FIG. 9 is a side view showing a meshing state of the frame bodies.
FIG. 10 is a schematic diagram schematically showing a contact shape of a frame body with a code ply.
FIG. 11 is a side view of the joining device sub-part together with the leveling means.
FIG. 12 is a diagram illustrating the formation of a ply material for a carcass ply. FIG. 13 is a diagram illustrating the problems of the prior art.
[Explanation of symbols]
3 Leveling Means 5 Receptor 6 Top Body 7 Joining Means 26 Supporting Piece 27 Receiving Piece 27S Receiving Surface 41 Joining Tool 43 Cone Surface 43A Maximum Diameter Section 44 Leveling Plate 60L on Bus Bar 60U Leveling Plate 61 Below Lowering Level Lifting Means 65 Heating means C Code E Side edge J Joint N Rotation axis P Code ply

Claims (2)

平行に引き揃えられかつゴム被覆したコードからなるコードプライを、前記コードに沿う各側縁部で互いに隣り合わせて接合するコードプライの側縁部接合装置であって、
前記コードプライの一端から他端に前記側縁部間を移動しうる支持片に取り付けられ、かつ前記コードプライの側縁部下面を受ける受け面を有する受片を設けた受体と、前記支持片の前記移動方向後側で保持されるとともに前記両側縁部を近寄せて接合することにより盛り上がり部を有する接合部を形成する接合手段と、この接合部を押さえ付けて平坦に均す均し手段とを具えるとともに、
前記接合手段は、回転軸芯廻りのコーン面を有する2つのコマ体が、前記コーン面の最大径部を近づけしかも2つのコマ体の前記コーン面をなす各1つの母線が前記受け面と平行となる角度で前記回転軸芯を交わらせて配された接合具を有し、
しかも前記均し手段は、前記接合部を上下に挟んで押さえ付ける上の均し板と下の均し板とを有するとともに、該上下の均し板は、均しに際して前記接合部を加温する加温手段を具えることを特徴とするコードプライの側縁部接合装置。
A cord ply consisting of cords which are aligned in parallel and coated with rubber, a side edge joining device of a cord ply which joins side by side at each side edge along the cord,
A receiving member provided with a receiving piece attached to a supporting piece movable between the side edges from one end of the cord ply to the other end, and having a receiving surface for receiving a lower surface of the side edge of the code ply; A joining means which is held on the rear side of the piece in the moving direction and which joins the side edges close to each other to form a joint having a swelling portion; With means,
In the joining means, two top bodies each having a cone surface around a rotation axis center may make the maximum diameter portion of the cone surface close to each other, and each one generatrix forming the cone surface of the two top bodies may be parallel to the receiving surface. Having a connector arranged so as to intersect the rotation axis at an angle,
Moreover, the leveling means has an upper leveling plate and a lower leveling plate which sandwich and hold the joining portion up and down, and the upper and lower leveling plates heat the joining portion when leveling. A cord ply side edge joining device, comprising:
前記上下の均し板は、前記コードプライの巾を越える長尺な板体からなり、かつ昇降手段によって昇降自在に支持されることを特徴とする請求項1記載のコードプライの側縁部接合装置。2. The side edge joint of a cord ply according to claim 1, wherein the upper and lower leveling plates are formed of a long plate body that exceeds the width of the cord ply, and are supported so as to be able to move up and down by an elevating means. apparatus.
JP2002308763A 2002-10-23 2002-10-23 Device for joining side edge of cord ply Pending JP2004142219A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011037209A (en) * 2009-08-17 2011-02-24 Bridgestone Corp Method for molding pneumatic tire and band molding machine used for the same
US8127817B2 (en) 2005-06-06 2012-03-06 Fuji Shoji Co., Ltd. Rubber sheet jointing apparatus and method
US20130168008A1 (en) * 2010-08-02 2013-07-04 Bridgestone Corporation Apparatus for joining tire constituent member and method for manufacturing tire constituent member
US20140318681A1 (en) * 2011-11-15 2014-10-30 Bridgestone Corporation Device and method for joining rubber members
WO2020120873A1 (en) * 2018-12-14 2020-06-18 Compagnie Generale Des Etablissements Michelin System for butt-joining rubber strips to supply an extruder
FR3089845A1 (en) * 2018-12-14 2020-06-19 Compagnie Generale Des Etablissements Michelin Joining system for rubber bands to feed an extruder

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8127817B2 (en) 2005-06-06 2012-03-06 Fuji Shoji Co., Ltd. Rubber sheet jointing apparatus and method
US8540841B2 (en) 2005-06-06 2013-09-24 Fuji Shoji Co., Ltd. Rubber sheet jointing apparatus and method
JP2011037209A (en) * 2009-08-17 2011-02-24 Bridgestone Corp Method for molding pneumatic tire and band molding machine used for the same
US20130168008A1 (en) * 2010-08-02 2013-07-04 Bridgestone Corporation Apparatus for joining tire constituent member and method for manufacturing tire constituent member
US20140318681A1 (en) * 2011-11-15 2014-10-30 Bridgestone Corporation Device and method for joining rubber members
US9676174B2 (en) * 2011-11-15 2017-06-13 Bridgestone Corporation Device and method for joining rubber members
WO2020120873A1 (en) * 2018-12-14 2020-06-18 Compagnie Generale Des Etablissements Michelin System for butt-joining rubber strips to supply an extruder
FR3089845A1 (en) * 2018-12-14 2020-06-19 Compagnie Generale Des Etablissements Michelin Joining system for rubber bands to feed an extruder
US11602903B2 (en) 2018-12-14 2023-03-14 Compagnie Generale Des Etablissements Michelin System for joining ends of rubber strips to supply an extruder

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