JP2001246676A - Method and device for processing material for carcass ply of tire - Google Patents
Method and device for processing material for carcass ply of tireInfo
- Publication number
- JP2001246676A JP2001246676A JP2000060052A JP2000060052A JP2001246676A JP 2001246676 A JP2001246676 A JP 2001246676A JP 2000060052 A JP2000060052 A JP 2000060052A JP 2000060052 A JP2000060052 A JP 2000060052A JP 2001246676 A JP2001246676 A JP 2001246676A
- Authority
- JP
- Japan
- Prior art keywords
- groove
- support base
- tip
- pushing blade
- blade
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000011324 bead Substances 0.000 claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 238000003825 pressing Methods 0.000 claims abstract description 16
- 238000004804 winding Methods 0.000 claims description 21
- 238000005452 bending Methods 0.000 claims description 2
- 238000007373 indentation Methods 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims 1
- 239000004033 plastic Substances 0.000 abstract description 20
- 239000004744 fabric Substances 0.000 abstract description 4
- 238000010073 coating (rubber) Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 8
- 239000002994 raw material Substances 0.000 description 5
- 238000003672 processing method Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Landscapes
- Tires In General (AREA)
- Tyre Moulding (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、タイヤのカーカ
スプライ用素材の加工方法及び加工装置、より詳細に
は、空気入りラジアルタイヤ用未加硫タイヤの成型前
に、断面が多角形から丸形にわたる未加硫ビードコア部
材に巻返す部分のカーカスプライ用素材のスチールコー
ドに対し、ビードコアの断面多角形頂点に相当する角乃
至丸形断面に沿うように塑性変形を施す加工方法及び加
工装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for processing a material for a carcass ply of a tire. The present invention relates to a processing method and apparatus for plastically deforming a steel cord of a carcass ply material to be unwound around an unvulcanized bead core member along a corner or a round cross section corresponding to a polygonal vertex of a bead core.
【０００２】[0002]
【従来の技術】空気入りラジアルタイヤの中でもトラッ
クやバスなどの重車両に使用する、いわゆる重荷重用空
気入りラジアルタイヤには、カーカスにスチールコード
のゴム被覆プライを用いるのが一般である。また、この
種のタイヤには高圧の内圧を充てんするので、カーカス
はビードコアの周りをタイヤ内側から外側に向け折返
し、カーカスを一対のビードコアに係止する構造が採用
されている。2. Description of the Related Art Among pneumatic radial tires, so-called heavy duty pneumatic radial tires used for heavy vehicles such as trucks and buses generally use a steel-coated rubber-coated ply as a carcass. Further, since this kind of tire is filled with a high internal pressure, a structure is adopted in which the carcass is turned around the bead core from the inside to the outside of the tire to lock the carcass on a pair of bead cores.
【０００３】ところが、カーカスの折返しは、ビード部
のゴム中で放射方向に位置し、かつ、切り離し端を有し
ているので、タイヤの荷重負荷転動下でカーカスの折返
し端に大きなひずみが集中し、折返し端からセパレーシ
ョン故障が生じ易い。そこで、折返し端のひずみ集中を
回避するため、図１０にビード部３０の断面を示すよう
に、それまでの折返し構造に代えて、カーカス３１の端
部３１E がビードコア３２周面を包み込むような巻込み
構造が提案されている。However, since the carcass fold is located radially in the rubber of the bead portion and has a cut-off end, a large strain is concentrated on the carcass fold end under the rolling load of the tire. However, separation failure is likely to occur from the folded end. Therefore, in order to avoid strain concentration at the folded end, as shown in a cross section of the bead portion 30 in FIG. 10, instead of the folded structure, the end 31E of the carcass 31 wraps around the peripheral surface of the bead core 32. Embedded structures have been proposed.
【０００４】しかし、巻込み端部３１E は、カーカス３
１のプライ中に埋設する多数本のスチールコードの弾性
領域内での巻込み変形に留まり、かつ、カーカス３１の
スチールコードがラジアル配列である上に反発弾性力が
大きいため、タイヤの製造過程にてビードコア３２から
遠ざかる。その結果、所望するビードコア巻込み状態を
実現することが困難となり、結局、ゴム中の巻込み端３
１Eeに集中ひずみが作用し、亀裂発生からバーストに至
る故障が発生し易くなり、期待したほどのビード部耐久
性向上を実現することができない。[0004] However, the winding end portion 31E is connected to the carcass 3
Because the steel cords of the carcass 31 are radially arranged and have a high rebound resilience, the steel cords of the carcass 31 have a large rebound resilience. Away from the bead core 32. As a result, it is difficult to achieve a desired bead core winding state, and eventually, the winding end 3
Concentrated strain acts on 1Ee, and a failure from a crack generation to a burst is likely to occur, and it is impossible to realize the expected improvement in bead portion durability.
【０００５】そこで、本出願人は、既に特願平１１−１
９８４７号に係る明細書にて、カーカスプライのビード
コア巻込み部に、一以上の塑性変形箇所を設ける空気入
りタイヤを提案し、特願平１１−２８７６２号に係る明
細書にて、未加硫のカーカスプライ用素材に対し塑性変
形（くせ付け）させる空気入りタイヤの製造方法などを
提案している。これらの塑性変形になるビードコア巻込
み部を図９のビード部断面図に示す。図９に示すビード
部２０において、カーカス２１はビードコア２２の巻込
み部２１R を有し、ビードコア２２は、断面がほぼ六角
形を示し、巻込み部２１R は塑性変形箇所ｐ1 、ｐ2 、
ｐ3 を有する。Accordingly, the present applicant has already filed Japanese Patent Application No. 11-1.
No. 9847 proposes a pneumatic tire in which one or more plastically deformed portions are provided in a bead core winding portion of a carcass ply. In a specification related to Japanese Patent Application No. 11-28762, an unvulcanized tire is proposed. Has proposed a method of manufacturing a pneumatic tire that plastically deforms (hashes) the carcass ply material. FIG. 9 is a cross-sectional view of the bead core winding portion that causes these plastic deformations. In the bead portion 20 shown in FIG. 9, the carcass 21 has a winding portion 21R of a bead core 22, the bead core 22 has a substantially hexagonal cross section, and the winding portion 21R has plastic deformation portions p 1 , p 2 ,
having a p 3.
【０００６】この巻込み部２１R に塑性変形箇所ｐ1 、
ｐ2 、ｐ3 を設けることで、巻込み部２１R はビードコ
ア２２の周面に沿い位置するので、巻込み端２１Reに作
用するひずみは著しく低減し、巻込み端２１Reの耐セパ
レーション性は大幅に向上し、結局、ビード部２０の耐
久性は著しく向上することを確かめている。巻込み端２
１Reをビードコア２２により近く位置させる上で、巻込
み端２１Reに近い塑性変形箇所は特に重要な役を担う。[0006] A plastically deformed portion p 1 ,
By providing p 2 and p 3 , since the winding portion 21R is located along the peripheral surface of the bead core 22, the strain acting on the winding end 21Re is significantly reduced, and the separation resistance of the winding end 21Re is greatly improved. It is confirmed that the durability of the bead portion 20 is significantly improved. Winding end 2
In order to position 1Re closer to the bead core 22, the plastically deformed portion near the winding end 21Re plays an especially important role.
【０００７】[0007]
【発明が解決しようとする課題】残された課題は、ビー
ドコア２２の巻込み部２１R の塑性変形、すなわちスチ
ールコードの塑性変形を確実に行うこと、さらに、この
塑性変形加工をより一層の高生産性で施すことにある。The problem to be solved is that the plastic deformation of the winding portion 21R of the bead core 22, that is, the plastic deformation of the steel cord, is ensured. It is to give by sex.
【０００８】従って、この発明の請求項１〜１２に記載
した発明の目的は、上述の残された課題の完全解決にあ
り、より具体的には、成型工程以前の、所定幅に裁断し
ジョイントした長尺の未加硫ゴム被覆ラジアル配列スチ
ールコードファブリックに、有効で、かつ、高生産性で
塑性変形を生じさせることが可能なタイヤのカーカスプ
ライ用素材の加工方法及びこの加工方法を実現するため
の加工装置を提供することにある。Accordingly, an object of the present invention described in claims 1 to 12 of the present invention is to completely solve the above-mentioned remaining problems, and more specifically, to cut a joint to a predetermined width before a molding step and to form a joint. And a method for processing a material for a carcass ply of a tire capable of causing plastic deformation effectively and with high productivity in a long unvulcanized rubber-coated radial array steel cord fabric. To provide a processing apparatus for the same.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するた
め、この発明の請求項１に記載した発明は、未加硫ゴム
を被覆した多数本の平行配列スチールコードの配列方向
と直交方向及び斜交方向のいずれか一方の方向に延びる
カーカスプライ用素材の、タイヤのビード部に配設する
ビードコアの周りを巻返す各側部部分で、コードの配列
方向の少なくとも一箇所に、先端部に２箇所以上の屈折
角部をもつ押込刃により、カーカスプライ用素材を、押
込刃の各屈折角部にそれぞれ対応する屈折角部をもつ溝
内に押圧することによりビードコアに巻返す向きに塑性
変形して屈折する巻込み部を形成することを特徴とす
る、タイヤのカーカスプライ用素材の加工方法である。In order to achieve the above-mentioned object, the invention described in claim 1 of the present invention is directed to an arrangement in which a plurality of parallel-arranged steel cords coated with unvulcanized rubber are arranged at right angles to the arrangement direction. At each side portion of the carcass ply material extending in one of the crossing directions, which is wound around a bead core provided in the bead portion of the tire, at least at one position in the cord arrangement direction and 2 at the tip portion. By pressing the material for carcass ply into the groove having the refraction angle part corresponding to each refraction angle part of the indentation blade, the pushing blade with the refraction angle part or more deforms plastically in the direction of rewinding to the bead core. A method for processing a material for a carcass ply of a tire, characterized in that a winding portion that is bent by bending is formed.
【００１０】また、請求項１に記載した発明を実現する
ため、この発明の請求項２に記載した発明は、多数本の
平行配列スチールコードに未加硫ゴムを被覆したカーカ
スプライ用素材を支持する台と、該支持台に対し垂直方
向に押圧動作可能な押込刃とを有し、支持台は、支持す
る上記素材のスチールコード配列方向と直交方向及び斜
交方向のいずれか一方の方向に延びる溝を備え、該溝
は、溝両壁面と溝底面との連結角部を含む、２箇所以上
の屈折角部を溝底面側に有し、押込刃は、支持台の溝直
上に位置する先端部を有し、該先端部は、押圧時の上記
素材を介して支持台の溝形状に沿い、かつ、溝の屈折角
部に対応する屈折角部をもつ形状を有し、押込刃の押圧
動作により、先端部は、上記素材部分を支持台の溝壁面
と溝底面とに押圧して、該押圧素材部分のスチールコー
ドを、対応する屈折角部相互間で塑性変形させる機能を
有することを特徴とするけタイヤのカーカスプライ用素
材の加工装置である。In order to realize the invention described in claim 1, the invention described in claim 2 of the present invention supports a carcass ply material in which a number of parallel-arranged steel cords are coated with unvulcanized rubber. And a pushing blade that can be pressed vertically with respect to the support table, and the support table is arranged in one of the direction orthogonal to the steel cord arrangement direction of the material to be supported and the oblique direction. The groove has an extending groove, the groove has two or more refraction corners including a connection corner between the groove wall surfaces and the groove bottom on the groove bottom side, and the pushing blade is located immediately above the groove of the support base. It has a tip portion, and the tip portion has a shape having a refraction angle portion corresponding to the refraction angle portion of the groove along the groove shape of the support base via the material when pressed, and By the pressing operation, the tip presses the above-mentioned material portion against the groove wall surface and the groove bottom surface of the support base. The steel cord push 圧素 material portion, a processing device of the material for the carcass ply only tire characterized by having a function of plastic deformation between the corresponding refraction angle section cross.
【００１１】請求項２に記載した発明に関し、請求項３
に記載した発明のように、押込刃は支持台に対する垂直
な上下移動手段を有し、該手段は押込刃の押圧動作を可
能とする機構を有する。[0011] The present invention described in claim 2 relates to claim 3.
As described in the invention described in (1), the pushing blade has a vertical moving means perpendicular to the support base, and the means has a mechanism capable of pressing the pushing blade.
【００１２】請求項２、３に記載した発明に関し、請求
項４に記載した発明のように、押込刃は回転自在なリン
グ形状を有し、支持台及び押込刃のうち少なくとも支持
台は、その溝が延びる方向に移動する手段を有し、これ
とは別に、請求項５に記載した発明のように、押込刃
は、支持台の溝が延びる方向を長手方向とする長尺形状
を有し、該形状をもつ押込刃先端部は、支持台の溝と平
行に延びる直状先端面を備える。According to the second and third aspects of the present invention, as in the fourth aspect of the present invention, the pushing blade has a rotatable ring shape, and at least the supporting stand among the supporting stand and the pushing blade has its Means for moving in the direction in which the groove extends, apart from this, as in the invention described in claim 5, the pushing blade has an elongated shape whose longitudinal direction is the direction in which the groove of the support base extends. The push blade tip portion having the shape has a straight tip surface extending parallel to the groove of the support base.
【００１３】また、請求項２に記載した発明に関し、請
求項６に記載した発明のように、押込刃は、支持台の溝
が延びる方向を長手方向とする長尺形状を有し、先端部
は長手方向に直状な先端面を備え、これら形状をもつ押
込刃は、その長手方向一方端を回動中心とする、支持台
に対する回動手段を有し、該回動手段は押込刃の押圧動
作を可能とする機構を有する。According to a second aspect of the present invention, as in the sixth aspect of the present invention, the pushing blade has an elongated shape whose longitudinal direction extends in a direction in which the groove of the support base extends, and has a tip portion. Has a tip surface which is straight in the longitudinal direction, and the pushing blade having these shapes has a rotating means for the support table, with one end in the longitudinal direction as a center of rotation, and the rotating means is provided for the pushing blade. It has a mechanism that enables the pressing operation.
【００１４】また、請求項６に記載した発明とは別に、
請求項２に記載した発明に関し、請求項７に記載した発
明のように、押込刃は、支持台の溝が延びる方向を長手
方向とする長尺形状を有し、この長尺形状押込刃は、下
向きに凸の長手方向曲面を先端部端面に有し、押込刃
は、該先端部端曲面を支持台の溝底に向かい押圧揺動さ
せる手段を有する。Further, apart from the invention described in claim 6,
According to the invention described in claim 2, as in the invention described in claim 7, the pushing blade has an elongated shape whose longitudinal direction is the direction in which the groove of the support base extends, and the elongated pushing blade is The push blade has a downwardly convex longitudinal curved surface at the end face, and the pushing blade has means for pressing and swinging the distal end curved face toward the groove bottom of the support base.
【００１５】請求項２、３及び請求項５〜７に記載した
発明に関し、請求項８に記載した発明のように、支持台
は、支持台の溝が延びる方向に移動する手段を有する。According to the invention described in claims 2, 3 and 5 to 7, as in the invention described in claim 8, the support base has means for moving in the direction in which the groove of the support base extends.
【００１６】請求項２〜８に記載した発明に関し、代表
の実施形態として、請求項９に記載した発明のように、
支持台の表面は平面形状を有し、支持台は一対の溝を備
え、溝はＵ字状断面形状を有し、溝両壁面と溝底面との
連結角部端から延びる溝底面及び両壁面は平面形状を有
し、溝底面は支持台表面と平行な平面を有する。With respect to the invention described in claims 2 to 8, as a typical embodiment, as in the invention described in claim 9,
The surface of the support has a planar shape, the support has a pair of grooves, the groove has a U-shaped cross-sectional shape, and a groove bottom surface and both wall surfaces extending from a connection corner end between the groove both wall surfaces and the groove bottom surface. Has a plane shape, and the groove bottom surface has a plane parallel to the support base surface.
【００１７】また、請求項２〜９に記載した発明に関
し、請求項１０に記載した発明のように、支持台の溝
は、０．１ｍｍ以上の深さＨ1 と、支持台表面の法線に
対し０〜８０°の範囲内の傾斜角度θ1 をもつ両壁面
と、０〜１５ｍｍの範囲内の連結角部面取り半径Ｒ1 と
を有する。Further, according to the invention described in claims 2 to 9, as in the invention described in claim 10, the groove of the support base has a depth H 1 of 0.1 mm or more and a normal to the surface of the support base. Has a wall angle having an inclination angle θ 1 in the range of 0 to 80 ° and a connecting corner chamfer radius R 1 in the range of 0 to 15 mm.
【００１８】また、特に、請求項１０に記載した発明と
の組合わせで、請求項２〜１０に記載した発明に関し、
請求項１１に記載した発明のように、押込刃先端部は、
先端平面からの両傾斜平面の傾斜角度θ2 が０〜８０°
の範囲内にあり、先端平面から両傾斜平面上端までの高
さＨ2 が深さＨ1 以上の０．１ｍｍ以上であり、先端平
面幅Ｄ1 は２ｍｍ以上であり、高さＨ2 位置の幅Ｄ2 は
２ｍｍ以上であり、そして、先端部の屈折角部の面取り
半径Ｒ2 は０〜１０ｍｍの範囲内にある形状を有する。In particular, the present invention relates to the invention according to claims 2 to 10 in combination with the invention described in claim 10.
As in the invention described in claim 11, the tip of the pushing blade is
The inclination angle θ 2 of both inclined planes from the tip plane is 0 to 80 °
Of in the range, it is both inclined plane to the upper end height H 2 is the depth H 1 or more 0.1mm or more from the tip plane, the tip plane width D 1 is a 2mm or more, the height H 2 position width D 2 is a 2mm or more and the chamfer radius R 2 of the refraction angle of the distal end has a shape that is in the range of 0 to 10 mm.
【００１９】また請求項１２に記載した発明は、請求項
１０及び請求項１１に記載した加工装置において、支持
台の溝と押込刃先端部との間で、傾斜角度θ1 ≧ 傾斜
角度θ2 、溝深さＨ1 ≦高さＨ2 、面取り半径Ｒ1 ≧面
取り半径Ｒ2 の関係を満たす加工装置である。According to a twelfth aspect of the present invention, in the processing apparatus according to the tenth and eleventh aspects, the inclination angle θ 1 ≧ the inclination angle θ 2 between the groove of the support table and the tip of the pushing blade. And a groove depth H 1 ≦ height H 2 and a chamfer radius R 1 ≧ a chamfer radius R 2 .
【００２０】[0020]
【発明の実施の形態】以下、この発明の実施の形態を図
１〜図８に基づき説明する。図１及び図２は、この発明
のタイヤのカーカスプライ用素材の加工装置の要部断面
図であり、図３及び図４は、図１及び図２に示す加工装
置により塑性変形させた後のカーカスプライ用素材の要
部断面図であり、図５〜図８は、この発明の押込刃を簡
略図解した側面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2 are cross-sectional views of a main part of a device for processing a material for carcass ply of a tire according to the present invention. FIGS. 3 and 4 show plastic tires after plastic deformation by the processing device shown in FIGS. 1 and 2. It is principal part sectional drawing of the raw material for carcass plies, and FIGS. 5-8 are the side views which illustrated the pushing blade of this invention in simplified form.
【００２１】図１及び図２において、加工装置は、多数
本の平行配列スチールコード１に未加硫ゴム２を被覆し
たカーカスプライ２１用素材（以下素材という）３を支
持する台５と、この支持台５に対し垂直方向（矢印Ａの
方向）に押圧動作可能な押込刃６とを有する。なお、空
気入りタイヤの構成部材は図９に示す符号を援用するも
のとする（以下同じ）。In FIG. 1 and FIG. 2, a processing apparatus includes a base 5 for supporting a material (hereinafter referred to as a material) 3 for a carcass ply 21 in which a number of parallel-arranged steel cords 1 are coated with an unvulcanized rubber 2. And a push blade 6 capable of pressing in a direction perpendicular to the support table 5 (in the direction of arrow A). The components shown in FIG. 9 are used for the components of the pneumatic tire (the same applies hereinafter).
【００２２】支持台５は、支持する素材３のスチールコ
ード１配列方向と直交方向又は斜交方向に延びる溝７を
備える。素材３は、成型工程より前の工程における材料
であり、好ましくは、長尺スチールコード１に未加硫ゴ
ム２を被覆したファブリックを巻取った大巻反から再度
ファブリックを巻出し、これを所定幅に裁断した小片を
ジョイントした長尺物である。The support base 5 has a groove 7 extending in a direction orthogonal to or oblique to the direction in which the steel cords 1 of the material 3 to be supported are arranged. The material 3 is a material used in a process prior to the molding process. Preferably, the fabric is unwound again from a large roll of a long steel cord 1 coated with an unvulcanized rubber 2 and wound on the fabric. It is a long object that is made by joining small pieces cut to width.
【００２３】このように、長尺素材３は、各種の処理を
施した後の材料であるから、一般に長尺トリートとも呼
ぶ。長尺素材３は、所定長さに切り揃えて、空気入りラ
ジアルタイヤ用未加硫タイヤ成型に用いる部材とし、よ
って、スチールコード１は長手方向に直交する配列乃至
やや斜交する配列のいずれかである。As described above, since the long material 3 is a material after various treatments, it is generally called a long treat. The long material 3 is cut into a predetermined length and used as a member used for molding an unvulcanized tire for a pneumatic radial tire. Therefore, the steel cord 1 is arranged in any of an array orthogonal to the longitudinal direction or a slightly oblique array. It is.
【００２４】図１及び図２に示すように、支持台５の溝
７は、２箇所以上の屈折角部Ｐ1 、Ｐ2 、Ｐ3 、・・
・、Ｐn を溝底面７B 側に有する。ただし、これら屈折
角部は、溝７の両壁面７W と溝底面７B との連結角部Ｐ
1 、Ｐ2 を含むものとする。図１では２箇所の屈折角部
Ｐ1 、Ｐ2 の例を、図２では３箇所の屈折角部Ｐ1 、Ｐ
2 、Ｐ3 の例をそれぞれ示す。屈折角部の数は、ビード
コア２２の断面形状の頂点数により定めるのが好まし
い。なお、ビードコアが円形乃至長円形の場合は、屈折
角部の数は成るべく多くする。As shown in FIG. 1 and FIG.
7 denotes two or more refraction angle portions P1 , PTwo , PThree , ...
・ 、 Pn On the groove bottom surface 7B side. However, these refractions
The corner portion is a connecting corner portion P between the two wall surfaces 7W of the groove 7 and the groove bottom surface 7B.
1 , PTwo Shall be included. In FIG. 1, two refraction corners
P1 , PTwo In FIG. 2, three refraction angle portions P1 , P
Two , PThree Are shown below. Number of refraction corners is bead
It is preferable to determine the number of vertices of the cross-sectional shape of the core 22.
No. If the bead core is circular or oblong,
The number of corners should be as large as possible.
【００２５】押込刃６は、支持台５の溝７直上に位置す
る先端部６-1を有する。先端部６-1は、押込刃６が支持
台５上に支持する長尺素材３を溝７内に押圧した時、素
材３を介して支持台５の溝７形状に沿う形状を有する。
この形状のうち、特に、溝７の屈折角部Ｐ1 、Ｐ2 、Ｐ
3 、・・・、Ｐn に対応する先端部６-1表面位置に、同
様な屈折角部Ｑ1 、Ｑ2 、Ｑ3 、・・・、Ｑn を有する
ことが重要である。The pushing blade 6 has a tip 6-1 located just above the groove 7 of the support base 5. The tip portion 6-1 has a shape along the groove 7 shape of the support base 5 via the raw material 3 when the pushing blade 6 presses the long raw material 3 supported on the support base 5 into the groove 7.
Among these shapes, in particular, the refraction angle portions P 1 , P 2 , P
3, ..., the distal end portion 6-1 surface position corresponding to P n, same refraction angle section Q 1, Q 2, Q 3, ..., it is important to have a Q n.
【００２６】図１及び図２は、押込刃６の素材３に対す
る溝７内への押圧動作状態を示す。この動作により、押
込刃６の先端部６-1は、素材３の一部分を支持台５の溝
壁面７W と溝底面７B とに押圧して、押圧した素材３の
一部分のスチールコード１を、それぞれ対応する溝７の
屈折角部Ｐ1 、Ｐ2 、Ｐ3 、・・・、Ｐn と先端部６-1
の屈折角部Ｑ1 、Ｑ2 、Ｑ3 、・・・、Ｑn との相互間
で塑性変形させる。FIGS. 1 and 2 show the pressing operation of the pushing blade 6 against the material 3 into the groove 7. By this operation, the tip portion 6-1 of the pushing blade 6 presses a part of the material 3 against the groove wall surface 7W and the groove bottom surface 7B of the support base 5, and the steel cord 1 as a part of the pressed material 3 respectively. The corresponding refraction angle portions P 1 , P 2 , P 3 ,..., P n of the groove 7 and the tip portion 6-1
Refraction angle portion to Q 1, Q 2, Q 3, ··· , is plastically deformed between each other and Q n.
【００２７】図１に示す加工装置により塑性変形させた
素材３の断面を図３に示し、図２に示す加工装置により
塑性変形させた素材３の断面を図４に示す。図３及び図
４において、破線の丸印は塑性変形を生じさせた箇所で
ある。各図において、塑性変形部ｐ1 は屈折角部Ｐ1 、
Ｑ1 に対応し、塑性変形部ｐ2 は屈折角部Ｐ2 、Ｑ2に
対応し、塑性変形部ｐ3 は屈折角部Ｐ3 、Ｑ3 に対応す
る。FIG. 3 shows a cross section of the raw material 3 plastically deformed by the processing apparatus shown in FIG. 1, and FIG. 4 shows a cross section of the raw material 3 plastically deformed by the processing apparatus shown in FIG. In FIGS. 3 and 4, broken circles indicate locations where plastic deformation has occurred. In each figure, the plastic deformation part p 1 is a refraction angle part P 1 ,
Corresponds to Q 1, the plastic deformation portion p 2 corresponds to the angle of refraction portion P 2, Q 2, the plastic deformation portion p 3 corresponds to the refraction angle portion P 3, Q 3.
【００２８】以上述べた加工装置は、以下に述べるカー
カスプライ用素材３の加工方法を実現する。すなわち、
図９を合わせ参照して、未加硫ゴム２を被覆した多数本
の平行配列スチールコード１の配列方向と直交方向又は
斜交方向に延びるカーカスプライ２１用素材３の、タイ
ヤのビード部２０に配設するビードコア２１の周りを巻
返す各側部部分（巻込み部２１R に相当する部分）で、
スチールコード１の配列方向の少なくとも一箇所に、通
常は一対の二箇所に、以下の方法でビードコア２１に巻
返す向きに部分ｐ1 、ｐ2 、ｐ3 、・・・、ｐn で塑性
変形して屈折する巻込み部を形成する。The above-described processing apparatus realizes a method of processing the carcass ply material 3 described below. That is,
With reference to FIG. 9, the tire bead portion 20 of the carcass ply 21 material 3 extending in a direction orthogonal to or oblique to the arrangement direction of the multiple parallel arrangement steel cords 1 coated with the unvulcanized rubber 2. At each side portion (the portion corresponding to the winding portion 21R) to be wound around the bead core 21 to be arranged,
In at least one place in the array direction of the steel cord 1, typically a pair of two places, part p 1 in a direction to return the bead core 21 wound in the following manner, p 2, p 3, · · ·, plastic deformation at p n To form a winding portion that bends.
【００２９】それは、先端部６-1に２箇所以上の屈折角
部Ｑ1 、Ｑ2 、Ｑ3 、・・・、Ｑnをもつ押込刃６によ
り、カーカスプライ用素材３を、押込刃６の各屈折角部
Ｑ1、Ｑ2 、Ｑ3 、・・・、Ｑn にそれぞれ対応する屈
折角部Ｐ1 、Ｐ2 、Ｐ3 、・・・、Ｐn をもつ溝７内に
押圧することによる。この加工方法の目的とするところ
は、塑性変形部ｐ1 、ｐ2 、ｐ3 、・・・、ｐn の形成
にあり、よって、以上述べた加工装置は加工方法実現の
ための例示である。The carcass ply blank 3 is formed by the pushing blade 6 having two or more refraction angles Q 1 , Q 2 , Q 3 ,..., Q n at the tip 6-1. each refraction angle portions to Q 1, Q 2, Q 3, ..., the refraction angle portion P 1 of each Q n corresponding, P 2, P 3, is pressed., in the groove 7 with P n It depends. The purpose of this processing method is to form the plastically deformed portions p 1 , p 2 , p 3 ,..., Pn , and the above-described processing apparatus is an example for realizing the processing method. .
【００３０】素材３の塑性変形部ｐ1 、ｐ2 、ｐ3 、・
・・、ｐn は、スチールコード１の弾性限界を超える十
分な押圧力の下で加工することができるので、未加硫タ
イヤから製品タイヤに至る間を通じて変形を保持するこ
とができる。また、成型工程にて、各塑性変形部をビー
ドコア２２（図９参照）となる部材の角部に適用し、こ
れに他の必要部材を張合わせて未加硫タイヤとする際
に、予め、素材３が塑性変形部を有しているので、成型
効率を高度に保持することができる。The plastically deformed portions p 1 , p 2 , p 3 ,.
.., Pn can be processed under a sufficient pressing force exceeding the elastic limit of the steel cord 1, so that the deformation can be maintained from the unvulcanized tire to the product tire. In the molding step, each plastically deformed portion is applied to a corner portion of a member to be the bead core 22 (see FIG. 9), and when other necessary members are stuck to the uncured tire, Since the material 3 has the plastic deformation portion, the molding efficiency can be maintained at a high level.
【００３１】上記の未加硫タイヤに加硫を施して製品タ
イヤとし、図９に示すビード部２０を得る。製品タイヤ
にて、素材３はカーカス２１であり、その巻込み部２１
R のくせ付け部ｐ1 、ｐ2 、ｐ3 は塑性変形部ｐ1 、ｐ
2 、ｐ3 である。よって、巻込み部２１R は、巻込み端
２１Reを含めてビードコア２２の周面に沿い、実使用状
態にて巻込み端２１Reには殆ど歪みが作用することはな
く、ビード部２０の耐久性は著しく向上する。The unvulcanized tire is vulcanized to obtain a product tire, and a bead portion 20 shown in FIG. 9 is obtained. In the product tire, the material 3 is a carcass 21, and
The hammered portions p 1 , p 2 , and p 3 of R are plastically deformed portions p 1 , p
It is 2, p 3. Therefore, the winding portion 21R extends along the peripheral surface of the bead core 22 including the winding end 21Re, and substantially no strain acts on the winding end 21Re in an actual use state. Significantly improved.
【００３２】この加工装置は、実際上、押込刃６が支持
台５に対する垂直な上下移動手段（図示省略）を有す
る。これにより、図１及び図２に両端Ａ、Ｂ矢印にて示
すように、非稼働時は押込刃６を上方（矢印Ｂ方向）に
移動させ、稼働時に、押込刃６を下方（矢印Ａ方向）に
下降させ、押圧動作を行わせる。In practice, this processing apparatus has a vertically moving means (not shown) in which the pushing blade 6 is perpendicular to the support base 5. As a result, as shown by arrows A and B at both ends in FIGS. 1 and 2, the push blade 6 is moved upward (direction of arrow B) during non-operation, and the push blade 6 is moved downward (direction of arrow A) during operation. ) To perform the pressing operation.
【００３３】また、図５に示すように、押込刃６を軸１
０により支持するリング形状とし、リング形状押込刃６
を、例えば図５の矢印方向に回転自在とする。このと
き、支持台５及び押込刃６のうち少なくとも支持台５
は、溝７が延びる方向に移動する手段を備える。支持台
５が移動手段を備えるとき、リング形状押込刃６は自由
回転とし、例えば支持台５が図５の矢印方向に移動する
とき、押圧状態のリング形状押込刃６は回転する。この
ようにすれば、長尺素材３に対する塑性変形加工を連続
して行うことができる。As shown in FIG. 5, the pushing blade 6 is
And a ring-shaped pushing blade 6
Is rotatable, for example, in the direction of the arrow in FIG. At this time, at least the support table 5 of the support table 5 and the pushing blade 6 is used.
Comprises means for moving in the direction in which the groove 7 extends. When the support base 5 has a moving means, the ring-shaped push blade 6 is free to rotate. For example, when the support base 5 moves in the direction of the arrow in FIG. 5, the ring-shaped push blade 6 in the pressed state rotates. In this way, the plastic deformation of the long material 3 can be continuously performed.
【００３４】また、リング形状押込刃６の代わりに、図
６に示すように、押込刃６は、支持台５の溝７が延びる
方向を長手方向とする長尺形状を有する。長尺形状をも
つ押込刃６先端部６-1は、支持台５の溝７と平行に延び
る直状先端面を備える。As shown in FIG. 6, instead of the ring-shaped pushing blade 6, the pushing blade 6 has an elongated shape whose longitudinal direction is the direction in which the groove 7 of the support base 5 extends. The push blade 6 tip 6-1 having a long shape has a straight tip surface extending parallel to the groove 7 of the support base 5.
【００３５】また、支持台５の溝７が延びる方向を長手
方向とする長尺形状を有し、先端部は長手方向に直状な
先端面を備える点では上記の長尺形状押込刃６と同じで
あるが、図７に示す押込刃６は、その長手方向一方端１
１を回動中心とし、この回動中心１１周りに支持台５に
対し両端矢印Ａ1 、Ｂ1 方向に回動する手段（図示省
略）を有する点で異なる。この回動手段は押込刃６の押
圧動作を可能とする機構を有するものとする。Further, it has an elongated shape whose longitudinal direction is the direction in which the groove 7 of the support table 5 extends, and the distal end portion has the above-described elongated push blade 6 in that it has a distal end surface that is straight in the longitudinal direction. The same, except that the pushing blade 6 shown in FIG.
1 in that a means (not shown) is provided around the center of rotation 11 and around the center of rotation 11 with respect to the support base 5 in the directions indicated by arrows A 1 and B 1 at both ends. It is assumed that the rotating means has a mechanism that enables the pushing operation of the pushing blade 6.
【００３６】また、押込刃が、支持台の溝が延びる方向
を長手方向とする長尺形状を有する点では、図６及び図
７に示す押込刃６と同じであるが、図８に示す長尺形状
押込刃６は、下向きに凸の長手方向曲面を先端部端面に
有する点で異なる。この押込刃６は、先端部端曲面を支
持台５の溝７の底面７B に向かい両端矢印で示すような
揺動運動を行い、かつ、矢印Ａ2 方向に押圧する手段
（図示省略）を有する。The pushing blade has the same shape as the pushing blade 6 shown in FIGS. 6 and 7 in that it has a long shape whose longitudinal direction is the direction in which the groove of the support stand extends, but the length shown in FIG. The rule-shaped pushing blade 6 is different in that it has a downwardly convex longitudinally curved surface at the tip end surface. The push blade 6 performs oscillating motion as indicated by double-headed arrow toward the tip end curved bottom surface 7B of the groove 7 of the support 5, and has means (not shown) for pressing the arrow A 2 direction .
【００３７】以上述べた長尺形状押込刃６を備える加工
装置では、支持台５が、その溝７の延びる方向に移動す
る手段を有する。このようにすれば、長尺素材３に対す
る塑性変形加工を連続して行うことができる。In the processing apparatus provided with the long pushing blade 6 described above, the support base 5 has means for moving in the direction in which the groove 7 extends. In this way, the plastic deformation of the long material 3 can be continuously performed.
【００３８】ここで、図１に示す加工装置を代表とし、
この装置につき一層具体的な説明を加える。すなわち、
支持台５の表面は平面形状を有する。支持台５は一対の
溝７を備え、溝７はＵ字状断面形状を有する。溝７の両
壁面７W と溝底面７B との連結角部Ｐ1 、Ｐ2 端から延
びる溝底面７B 及び両壁面７W は平面形状を有する。ま
た、溝底面７B は支持台５の表面と平行な平面を有す
る。Here, the processing apparatus shown in FIG.
This device will be described more specifically. That is,
The surface of the support 5 has a planar shape. The support 5 has a pair of grooves 7, and the grooves 7 have a U-shaped cross section. Groove bottom surface 7B and both walls 7W extending from the connecting corners P 1, P 2 ends with a double wall 7W and the groove bottom surface 7B of the groove 7 has a planar shape. The groove bottom surface 7B has a plane parallel to the surface of the support base 5.
【００３９】支持台５の溝７は次の諸元を有する。すな
わち、深さＨ1 は０．１ｍｍ以上であり、両壁面７W
の、支持台５表面の法線に対する傾斜角度θ1 は０〜８
０°の範囲内、好ましくは２０〜７０°の範囲内あり、
そして、連結（屈折）角部Ｐ1、Ｐ2 の面取り半径Ｒ1
は０〜１５ｍｍの範囲内、好ましくは０〜１２ｍｍの範
囲内の値を有する。The groove 7 of the support 5 has the following specifications. That is, the depth H 1 is at 0.1mm or more, both walls 7W
The inclination angle theta 1 with respect to the normal line of the support base 5 surface 0-8
In the range of 0 °, preferably in the range of 20-70 °,
And the chamfer radius R 1 of the connection (refraction) corners P 1 and P 2
Has a value in the range of 0 to 15 mm, preferably in the range of 0 to 12 mm.
【００４０】これに対し、押込刃６の先端部６-1は次の
諸元を有する。すなわち、先端平面からの両傾斜平面の
傾斜角度θ2 が０〜８０°の範囲内、好ましくは２０〜
７０°の範囲内あり、先端平面から両傾斜平面上端まで
の高さＨ2 が０．１ｍｍ以上であり、先端平面幅Ｄ1 は
２ｍｍ以上であり、高さＨ2 位置の幅Ｄ2 は２ｍｍ以上
であり、そして、先端部６-1の屈折角部Ｑ1 、Ｑ2 の面
取り半径Ｒ2 は０〜１０ｍｍの範囲内、好ましくは０〜
８ｍｍの範囲内の値を有する。On the other hand, the tip 6-1 of the pushing blade 6 has the following specifications. That is, the inclination angle theta 2 of both inclined plane from the front end plane in the range of 0 to 80 °, preferably 20
There within the range of 70 °, and the height H 2 of the front end plane to both inclined plane upper end 0.1mm or more, the tip plane width D 1 is a 2mm or more, the width D 2 of the height H 2 position 2mm The chamfer radius R 2 of the refraction angle portions Q 1 and Q 2 of the tip portion 6-1 is in the range of 0 to 10 mm, preferably 0 to 10 mm.
It has a value in the range of 8 mm.
【００４１】そして、図１に示す加工装置は、支持台５
の溝７と押込刃６の先端部６-1との間で、傾斜角度θ1
≧ 傾斜角度θ2 、溝深さＨ1 ≦高さＨ2 、面取り半径
Ｒ1≧面取り半径Ｒ2 の関係を満たすものとする。これ
らにより、素材３に対し、効率良く、最良の塑性変形部
ｐ1 、ｐ2 を形成することができる。The processing apparatus shown in FIG.
Between the groove 7 and the tip 6-1 of the pushing blade 6, the inclination angle θ 1
≧ Incline angle θ 2 , groove depth H 1 ≦ height H 2 , chamfer radius R 1 ≧ chamfer radius R 2 . As a result, the best plastically deformed portions p 1 and p 2 can be efficiently formed on the material 3.
【００４２】なお、未加硫被覆ゴム２を省略し、スチー
ルコード１の配列体に直接塑性変形加工を施すことも可
とする。しかし、この場合は、スチールコード１が、押
込刃６の先端部６-1面に対し自由であるから、先端部６
-1面から逃げる傾向をもち、それ故、接塑性変形し難く
なる。It is also possible to omit the unvulcanized coated rubber 2 and to directly perform plastic deformation processing on the array of the steel cords 1. However, in this case, since the steel cord 1 is free with respect to the tip 6-1 surface of the pushing blade 6, the tip 6
-1 It has a tendency to escape from the surface, so that it is difficult for plastic deformation to occur.
【００４３】この意味で、たとえ未加硫被覆ゴム２を用
いても、それが薄ゲージに場合は、押圧時に、上記と同
様にスチールコード１があらわれることもあるので、素
材３の接塑性変形対象部分に０．３〜１．５ｍｍ程度の
ゲージをもつゴムシートを予め張合わせておくのが好ま
しい。スチールコード１のみの場合、又はスチールコー
ド１が露出している場合は、未加硫タイヤ成型時のビー
ドコア巻込み部にゴムシートを張合わせても良い。In this sense, even if the unvulcanized coated rubber 2 is used, if it is a thin gauge, the steel cord 1 may appear when pressed in the same manner as described above. It is preferable that a rubber sheet having a gauge of about 0.3 to 1.5 mm is previously bonded to the target portion. When only the steel cord 1 is used, or when the steel cord 1 is exposed, a rubber sheet may be bonded to a bead core winding portion at the time of molding an unvulcanized tire.
【００４４】[0044]
【発明の効果】請求項１〜１２に記載した発明によれ
ば、成型工程以前の、所定幅に裁断しジョイントした長
尺の未加硫ゴム被覆ラジアル配列スチールコードに、有
効で、かつ、高効率に塑性変形を生じさせ、これにより
成型工程に高生産性を保持させることが可能で、しか
も、製品タイヤでの大幅なビード部耐久性向上を保証す
ることが可能なタイヤのカーカスプライ用素材の加工方
法及びこの加工方法を実現する加工装置を提供すること
ができる。According to the invention as set forth in claims 1 to 12, a long, unvulcanized rubber-coated radially-arranged steel cord cut and joined to a predetermined width before the molding step is effective and high in strength. Material for tire carcass ply that can generate plastic deformation efficiently and thereby maintain high productivity in the molding process, and can also guarantee significant improvement in bead durability in product tires And a processing apparatus for realizing this processing method.
【図１】 この発明のタイヤのカーカスプライ用素材の
加工装置の要部断面である。FIG. 1 is a sectional view of a main part of a device for processing a material for a carcass ply of a tire according to the present invention.
【図２】 この発明のタイヤのカーカスプライ用素材の
別の加工装置の要部断面図である。FIG. 2 is a cross-sectional view of a main part of another processing device for a carcass ply material for a tire according to the present invention.
【図３】 図１に示す加工装置により塑性変形させた後
のカーカスプライ用素材の要部断面図である。FIG. 3 is a cross-sectional view of a main part of the carcass ply material after being plastically deformed by the processing apparatus shown in FIG. 1;
【図４】 図２に示す加工装置により塑性変形させた後
のカーカスプライ用素材の要部断面図である。FIG. 4 is a cross-sectional view of a main part of the carcass ply material after being plastically deformed by the processing device shown in FIG. 2;
【図５】 この発明のリング形状押込刃の簡略図解の側
面図である。FIG. 5 is a side view of a simplified illustration of the ring-shaped pushing blade of the present invention.
【図６】 この発明の長尺形状押込刃の簡略図解の側面
図である。FIG. 6 is a schematic side view of a long pushing blade of the present invention.
【図７】 この発明の別の長尺形状押込刃の簡略図解の
側面図である。FIG. 7 is a side view of a simplified illustration of another elongated push blade of the present invention.
【図８】 この発明の更に別の長尺形状押込刃の簡略図
解の側面図である。FIG. 8 is a side view of a simplified illustration of still another long push blade of the present invention.
【図９】 この発明の素材を用いたタイヤのビード部断
面図である。FIG. 9 is a sectional view of a bead portion of a tire using the material of the present invention.
【図１０】 従来タイヤのビード部断面図である。FIG. 10 is a sectional view of a bead portion of a conventional tire.
１ スチールコード ２ 被覆ゴム ３ 素材 ５ 支持台 ６ 押込刃 ６-1 先端部 ７ 溝 ７W 溝壁面 ７ｂ 溝底面 Ｐ1 、Ｐ2 、Ｐ3 溝の屈折角部 Ｑ1 、Ｑ2 、Ｑ3 先端部の屈折角部 ｐ1 、ｐ2 、ｐ3 素材の屈折角部1 steel cord 2 coating rubber 3 elements 5 supporting stand 6 push blade 6-1 tip 7 grooves 7W groove wall surface 7b groove bottom P 1, P 2, P 3 refraction angle portion to Q 1 groove, Q 2, Q 3 tip refraction angle portion p 1, p 2, p 3 refraction angle of the material
Claims (12)
スチールコードの配列方向と直交方向及び斜交方向のい
ずれか一方の方向に延びるカーカスプライ用素材の、タ
イヤのビード部に配設するビードコアの周りを巻返す各
側部部分で、コードの配列方向の少なくとも一箇所に、
先端部に２箇所以上の屈折角部をもつ押込刃により、カ
ーカスプライ用素材を、押込刃の各屈折角部にそれぞれ
対応する屈折角部をもつ溝内に押圧することによりビー
ドコアに巻返す向きに塑性変形して屈折する巻込み部を
形成することを特徴とする、タイヤのカーカスプライ用
素材の加工方法。1. A carcass ply material extending in one of a direction orthogonal to and an oblique direction to an arrangement direction of a number of parallel arrangement steel cords coated with unvulcanized rubber and disposed at a bead portion of a tire. In each side part to be wrapped around the bead core, at least one place in the cord arrangement direction,
A direction in which the material for carcass ply is pressed into a groove having a refraction angle portion corresponding to each refraction angle portion of the indentation blade by a pushing blade having two or more refraction angle portions at a tip end, thereby rewinding the bead core. A method for processing a material for a carcass ply of a tire, comprising forming a winding portion which is plastically deformed and bent.
硫ゴムを被覆したカーカスプライ用素材を支持する台
と、該支持台に対し垂直方向に押圧動作可能な押込刃と
を有し、支持台は、支持する上記素材のスチールコード
配列方向と直交方向及び斜交方向のいずれか一方の方向
に延びる溝を備え、該溝は、溝両壁面と溝底面との連結
角部を含む、２箇所以上の屈折角部を溝底面側に有し、
押込刃は、支持台の溝直上に位置する先端部を有し、該
先端部は、押圧時の上記素材を介して支持台の溝形状に
沿い、かつ、溝の屈折角部に対応する屈折角部をもつ形
状を有し、押込刃の押圧動作により、先端部は、上記素
材部分を支持台の溝壁面と溝底面とに押圧して、該押圧
素材部分のスチールコードを、対応する屈折角部相互間
で塑性変形させる機能を有することを特徴とする、タイ
ヤのカーカスプライ用素材の加工装置。2. A support for supporting a carcass ply material in which a number of parallel-arranged steel cords are coated with unvulcanized rubber, and a pushing blade operable to press vertically on the support. The base is provided with a groove extending in any one of a direction orthogonal to the steel cord arrangement direction of the material to be supported and an oblique direction, and the groove includes a connection corner between both wall surfaces of the groove and the bottom surface of the groove. Having more than one refraction angle on the groove bottom side,
The pushing blade has a tip portion located directly above the groove of the support base, and the tip portion conforms to the groove shape of the support base via the material at the time of pressing, and corresponds to a bending angle portion of the groove. It has a shape having a corner, and the tip portion presses the material portion against the groove wall surface and the groove bottom surface of the support base by the pressing operation of the pushing blade, and the steel cord of the pressed material portion is bent correspondingly. An apparatus for processing a material for a carcass ply of a tire, having a function of plastically deforming between corners.
手段を有し、該手段は押込刃の押圧動作を可能とする機
構を有する請求項２に記載した加工装置。3. The processing apparatus according to claim 2, wherein the pushing blade has a vertical moving means perpendicular to the support table, and the means has a mechanism capable of pressing the pushing blade.
支持台及び押込刃のうち少なくとも支持台は、その溝が
延びる方向に移動する手段を有する請求項２又は３に記
載した加工装置。4. The pushing blade has a rotatable ring shape,
The processing apparatus according to claim 2, wherein at least the support table of the support table and the pushing blade has a unit that moves in a direction in which the groove extends.
手方向とする長尺形状を有し、該形状をもつ押込刃先端
部は、支持台の溝と平行に延びる直状先端面を備える請
求項２又は３に記載した加工装置。5. The push blade has an elongated shape whose longitudinal direction is the direction in which the groove of the support base extends, and the tip of the push blade having this shape has a straight tip surface extending parallel to the groove of the support base. The processing device according to claim 2, further comprising:
手方向とする長尺形状を有し、先端部は長手方向に直状
な先端面を備え、これら形状をもつ押込刃は、その長手
方向一方端を回動中心とする、支持台に対する回動手段
を有し、該回動手段は押込刃の押圧動作を可能とする機
構を有する請求項２に記載した加工装置。6. The pushing blade has an elongated shape whose longitudinal direction is the direction in which the groove of the support base extends, and the tip portion has a tip surface that is straight in the longitudinal direction. The processing apparatus according to claim 2, further comprising: a rotation unit having a rotation center at one end in the longitudinal direction with respect to the support table, wherein the rotation unit has a mechanism that enables a pressing operation of the pushing blade.
手方向とする長尺形状を有し、この長尺形状押込刃は、
下向きに凸の長手方向曲面を先端部端面に有し、押込刃
は、該先端部端曲面を支持台の溝底に向かい押圧揺動さ
せる手段を有する請求項２に記載した加工装置。7. The pushing blade has a long shape whose longitudinal direction is the direction in which the groove of the support base extends, and the long pushing blade has
The processing apparatus according to claim 2, wherein a downwardly convex longitudinal curved surface is provided at an end surface of the distal end portion, and the pushing blade includes means for pressing and swinging the curved surface of the distal end portion toward the groove bottom of the support base.
動する手段を有する請求項２、３及び請求項５〜７のい
ずれか一項に記載した加工装置。8. The processing apparatus according to claim 2, wherein the support base has means for moving in a direction in which the groove of the support base extends.
は一対の溝を備え、溝はＵ字状断面形状を有し、溝両壁
面と溝底面との連結角部端から延びる溝底面及び両壁面
は平面形状を有し、溝底面は支持台表面と平行な平面を
有する請求項２〜８のいずれか一項に記載した加工装
置。9. The surface of the support base has a planar shape, the support base has a pair of grooves, the groove has a U-shaped cross-sectional shape, and extends from a connection corner end between both wall surfaces of the groove and the bottom surface of the groove. The processing apparatus according to any one of claims 2 to 8, wherein the groove bottom surface and both wall surfaces have a planar shape, and the groove bottom surface has a plane parallel to the support base surface.
（Ｈ1 ）と、支持台表面の法線に対し０〜８０°の範囲
内の傾斜角度（θ1 ）をもつ両壁面と、０〜１５ｍｍの
範囲内の連結角部面取り半径（Ｒ1 ）とを有する請求項
２〜９のいずれか一項に記載した加工装置。10. A groove of the support base has a depth (H 1 ) of 0.1 mm or more, and both wall surfaces having an inclination angle (θ 1 ) within a range of 0 to 80 ° with respect to a normal to a surface of the support base. When machining apparatus according to any one of claims 2-9 and a connecting angle chamfer radius in the range of 0~15mm (R 1).
斜平面の傾斜角度（θ2）が０〜８０°の範囲内にあ
り、先端平面から両傾斜平面上端までの高さ（Ｈ2）が
深さ（Ｈ1 ）以上の０．１ｍｍ以上であり、先端平面幅
（Ｄ1 ）は２ｍｍ以上であり、高さ（Ｈ2 ）位置の幅
（Ｄ2 ）は２ｍｍ以上であり、そして、先端部の屈折角
部の面取り半径（Ｒ2 ）は０〜１０ｍｍの範囲内にある
形状を有する請求項２〜１０のいずれか一項に記載した
加工装置。11. The tip portion of the pushing blade has an inclination angle (θ 2 ) of both inclined planes from the tip plane within a range of 0 to 80 °, and a height (H 2 ) from the tip plane to the upper end of both inclined planes. ) Is not less than 0.1 mm not less than the depth (H 1 ), the tip plane width (D 1 ) is not less than 2 mm, the width (D 2 ) at the height (H 2 ) position is not less than 2 mm, and chamfering radius (R 2) of the refraction angle of the tip processing apparatus according to any one of claims 2 to 10 having a shape which is within the range of 0 to 10 mm.
加工装置において、支持台の溝と押込刃先端部との間
で、傾斜角度θ1 ≧ 傾斜角度θ2 、溝深さＨ1 ≦高さ
Ｈ2 、面取り半径Ｒ1 ≧面取り半径Ｒ2 の関係を満たす
加工装置。12. The processing apparatus according to claim 10, wherein the inclination angle θ 1 ≧ the inclination angle θ 2 and the groove depth H 1 ≦ high between the groove of the support base and the tip of the pushing blade. It is H 2, the processing apparatus which satisfies the relationship of chamfer radius R 1 ≧ chamfering radius R 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000060052A JP4410901B2 (en) | 2000-03-06 | 2000-03-06 | Processing method and processing apparatus for tire carcass ply material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000060052A JP4410901B2 (en) | 2000-03-06 | 2000-03-06 | Processing method and processing apparatus for tire carcass ply material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001246676A true JP2001246676A (en) | 2001-09-11 |
| JP4410901B2 JP4410901B2 (en) | 2010-02-10 |
Family
ID=18580422
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000060052A Expired - Fee Related JP4410901B2 (en) | 2000-03-06 | 2000-03-06 | Processing method and processing apparatus for tire carcass ply material |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7491285B2 (en) | 2004-10-06 | 2009-02-17 | Sumitomo Rubber Industries, Ltd. | Method for molding bead portion of green tire and bead portion molding device |
| US7513283B2 (en) | 2005-03-18 | 2009-04-07 | Sumitomo Rubber Industries, Ltd. | Heavy duty tire |
-
2000
- 2000-03-06 JP JP2000060052A patent/JP4410901B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7491285B2 (en) | 2004-10-06 | 2009-02-17 | Sumitomo Rubber Industries, Ltd. | Method for molding bead portion of green tire and bead portion molding device |
| US7513283B2 (en) | 2005-03-18 | 2009-04-07 | Sumitomo Rubber Industries, Ltd. | Heavy duty tire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4410901B2 (en) | 2010-02-10 |
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