JP3066769B2 - Method of manufacturing tire beads - Google Patents
Method of manufacturing tire beadsInfo
- Publication number
- JP3066769B2 JP3066769B2 JP2408685A JP40868590A JP3066769B2 JP 3066769 B2 JP3066769 B2 JP 3066769B2 JP 2408685 A JP2408685 A JP 2408685A JP 40868590 A JP40868590 A JP 40868590A JP 3066769 B2 JP3066769 B2 JP 3066769B2
- Authority
- JP
- Japan
- Prior art keywords
- filler
- bead
- projection
- protrusion
- bead core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000011324 bead Substances 0.000 title claims description 74
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 239000000945 filler Substances 0.000 claims description 72
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 4
- 238000005304 joining Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/48—Bead-rings or bead-cores; Treatment thereof prior to building the tyre
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C15/00—Tyre beads, e.g. ply turn-up or overlap
- B60C15/06—Flipper strips, fillers, or chafing strips and reinforcing layers for the construction of the bead
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/48—Bead-rings or bead-cores; Treatment thereof prior to building the tyre
- B29D2030/482—Applying fillers or apexes to bead cores
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、タイヤビードの製造
方法に係わり、更に詳しくはビードコアに対してフィラ
ーを円筒状に巻付けた後、略垂直方向に起立させて貼付
け、目的の最終形状を得ることで、ビードフィラーの貼
付け精度を向上させたタイヤビードの製造方法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a tire bead, and more particularly, to a method of winding a filler around a bead core in a cylindrical shape, and then erecting the filler in a substantially vertical direction to apply the desired final shape. The present invention relates to a method for producing a tire bead in which the accuracy of attaching a bead filler is improved.
【０００２】[0002]
【従来の技術】従来、タイヤビードの製造方法におい
て、ビードフィラーをビードコアに貼付ける場合、ビー
ドコアに対してビードフィラーを円盤状に貼付けて製造
していた（特開昭53-128682 号公報, 特開昭58-28367号
公報) 。然しながら、ビードフィラー円盤の内周と外周
とは、周長が異なることから、円盤状に貼付ける際に内
周と外周とのビードフィラーの伸ばされ方が異なって、
ビードフィラーの端末部のスプライスが非常に難しいと
言う問題があった。2. Description of the Related Art Hitherto, in a method of manufacturing a tire bead, when a bead filler is stuck to a bead core, the bead filler is stuck to the bead core in a disc shape (JP-A-53-128682, JP-A-58-28367). However, the inner circumference and the outer circumference of the bead filler disk have different circumferences, so the way the bead filler is stretched between the inner circumference and the outer circumference when pasting in a disk shape is different,
There was a problem that it was very difficult to splice the end portion of the bead filler.
【０００３】また、ビードコアに対してビードフィラー
を円筒状に貼付けるものにあっては、三角形状のビード
フィラーをビードコアと離間させて巻付けていたため、
ビードコアとビードフィラー円筒とを貼合せる時点で、
精度上に問題があった。そこで、本願出願人は、かかる
問題を解決するため、図６に示すように、ビードコア３
の外周面に、フィラー１ａの底部に形成した薄肉突起部
１ｂを貼付けながら円筒状に巻き、このフィラー１ｂを
所定の長さで切断した後、フィラー１ａの端末部と先端
とを圧着し、前記フィラー１ａの先端をブラダーにより
拡張立ち上がらせると共に、フィラー１ａの底面と薄肉
突起部１ｂとをを接着して円盤状に形成するタイヤビー
ドの製造方法を提案している（特願昭60-185858 号) 。[0003] Further, in the case where a bead filler is affixed to a bead core in a cylindrical shape, a triangular bead filler is wound apart from the bead core.
At the time of bonding the bead core and the bead filler cylinder,
There was a problem with accuracy. In order to solve such a problem, the present applicant has developed a bead core 3 as shown in FIG.
On the outer peripheral surface, a thin projection 1b formed at the bottom of the filler 1a is stuck and wound into a cylindrical shape, and the filler 1b is cut into a predetermined length. A method of manufacturing a tire bead in which the tip of the filler 1a is expanded and raised by a bladder and the bottom surface of the filler 1a and the thin projection 1b are bonded to each other to form a disk (Japanese Patent Application No. 60-185858). ).
【０００４】[0004]
【発明が解決しようとする問題点】然し乍ら、上記のよ
うなタイヤビードの製造方法は、薄肉突起部１ｂの肉厚
が折返し部Ｘまで均一であるため、ビードフィラー１を
折返して起立させると、その起立端はビードコア３の側
面とは一致せず、その結果ビードコア３の周上へ均一に
貼付けができず、ビードフィラー１が外側に開いてしま
う等の問題があった。However, in the method for manufacturing a tire bead as described above, since the thickness of the thin projection 1b is uniform up to the turn-up portion X, when the bead filler 1 is turned upright, The rising end does not coincide with the side surface of the bead core 3, and as a result, it cannot be stuck uniformly on the periphery of the bead core 3, and the bead filler 1 is opened outward.
【０００５】[0005]
【発明の目的】この発明は、係る従来の問題点に着目し
て案出されたもので、その目的とするところはフィラー
を突起部に略垂直に起立させて貼付けることが出来ると
共に、フィラーをビードコアに対して精度良く貼付ける
ことが出来、また円筒貼りの特徴をもってビードフィラ
ーの端末部のスプライスが自動化出来、更にタイヤビー
ドの製品精度を向上させることが出来るタイヤビードの
製造方法を提供することを目的とするものである。SUMMARY OF THE INVENTION The present invention was devised in view of the above-mentioned conventional problems. The object of the present invention is to allow a filler to be stood upright on a protruding portion and to be stuck substantially vertically. The present invention provides a method for manufacturing a tire bead capable of accurately affixing a bead core to a bead core, having a feature of cylindrical bonding, automatically splicing a terminal portion of the bead filler, and further improving the product accuracy of the tire bead. The purpose is to do so.
【０００６】[0006]
【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、フィラーの底部と突起部との接合面の長
さを同じ幅に形成すると共に、突起部側面の厚さとフィ
ラーの底部を起立させた際に突起部側面と同一位置に来
る部分の厚さを折返し部の厚さよりも厚く形成し、接合
面を折返し部に向って所定の傾斜角度で形成しておき、
前記ビードコアの外周面上に、フィラーの底部に連結さ
れた突起部を貼付ける際、前記接合面の折返し部に算盤
球状のガイドロールを押し当てながら、前記折返し部を
支点としてフィラーを順次起立させ、ビードコアに一致
させた状態で、フィラーの側面と突起部の側面とを略直
線状に起立させることを要旨とするものである。Means for Solving the Problems] The present invention, in order to achieve the above object, the length of the joining surface between the protrusion bottom of the filler
With the same width, and the thickness and
When the bottom of the roller is raised, it
The thickness of the part to be formed is thicker than the thickness of the folded part, and
The surface is formed at a predetermined inclination angle toward the folded part,
On the outer peripheral surface of the bead core, connected to the bottom of the filler
When attaching the protruding part, the abutment
While pressing the spherical guide roll,
Fillers are erected sequentially as fulcrums, matching the bead core
With the filler in contact with the side of the protrusion
It is intended to stand up linearly .
【０００７】[0007]
【発明の作用】この発明は、上記のように構成され、フ
ィラーの底部と突起部との内側を、予め折返し部に向っ
て所定の傾斜角度でテーパ面を形成してあるので、ビー
ドコアに対してフィラーと突起部とを略直線状に起立さ
せて貼付けることが出来ると共に、フィラーをビードコ
アに対して精度良く貼付けることが出来る。またフィラ
ーの端末部のスプライスが自動化出来、更にタイヤビー
ドの製品精度を向上させることが出来るものである。The present invention is constructed as described above, and the inside of the bottom of the filler and the inside of the projection are formed in advance with a tapered surface at a predetermined inclination angle toward the turn-back portion. Thus, the filler and the projection can be stuck substantially linearly and can be stuck, and the filler can be stuck to the bead core with high accuracy. Further, the splicing of the terminal portion of the filler can be automated, and the product accuracy of the tire bead can be further improved.
【０００８】また、ビードコアの側面と、フィラーの折
返し起立部を一致させるための巻付けガイドに、折返し
部に算盤球状のガイドロールを使用し、フィラーの貼付
け精度を高めたものである。[0008] In addition, an aspheric spherical guide roll is used in the folded portion of the winding guide for aligning the side surface of the bead core with the folded portion of the filler, thereby increasing the accuracy of attaching the filler.
【０００９】[0009]
【発明の実施例】以下添付図面に基づき、この発明の実
施例を説明する。なお、従来例と同一構成要素は、同一
符号を付して説明は省略する。図１は、この発明を実施
した断面三角形状に形成されたビードフィラー１であっ
て、このビードフィラー１は、フィラー１ａと、その底
部にー体的に連結された巾と同じ長さの薄肉の突起部１
ｂとで構成されている。Embodiments of the present invention will be described below with reference to the accompanying drawings. The same components as those of the conventional example are denoted by the same reference numerals, and description thereof will be omitted. FIG. 1 shows a bead filler 1 formed in a triangular cross section and embodying the present invention. The bead filler 1 is composed of a filler 1a and a thin wall having the same length as the width physically connected to the bottom thereof. Protrusion 1
b.
【００１０】前記、フィラー１ａと突起部１ｂとの接合
面２は、折返し部Ｘに向って所定の傾斜角度でテーパ面
状となっており、従って、突起部１ｂの厚さａと、フィ
ラー１ａの底部の厚さｂは、折返し部Ｘの厚さｃよりも
厚くし、これにより折返し部Ｘに楔効果が発生して応力
が集中し、後述するブラダーにて最終形状に起立させる
場合、折返し部Ｘを正にして形状の安定したビードフィ
ラー１を成形出来るものである。The joint surface 2 between the filler 1a and the projection 1b is tapered at a predetermined inclination angle toward the folded portion X. Therefore, the thickness a of the projection 1b and the filler 1a Is thicker than the thickness c of the folded portion X, whereby a wedge effect is generated in the folded portion X and the stress is concentrated. The bead filler 1 having a stable shape can be formed by making the portion X positive.
【００１１】なお、フィラー１ａと突起部１ｂとの接合
面２の長さＨは、同じ幅となることが必要である。上記
のようにビードフィラー１を構成することで、前記折返
し部Ｘを支点としてフィラー１ａを起立させて突起部１
ｂと接合面２を介して貼付けた際、後述するビードコア
３の側面とフィラー１ａの折返し起立部が一致すると同
時に、フィラー１ａの側面及び突起部１ｂの側面とが略
直線状に起立するものである。The length H of the joint surface 2 between the filler 1a and the projection 1b must be the same. By configuring the bead filler 1 as described above, the filler 1a is raised with the folded portion X as a fulcrum, and the protrusion 1
b and the bonding surface 2, the side surface of the bead core 3, which will be described later, coincides with the folded upright portion of the filler 1 a, and at the same time, the side surface of the filler 1 a and the side surface of the protrusion 1 b rise substantially linearly. is there.
【００１２】また、図１の一点鎖線に示すような算盤球
状のガイドロール４を折返し部Ｘに当てて使用すること
により、ビードコア３上に精度良く貼付けることが出来
るものである。次に、タイヤビ−ドの製造方法を説明す
る。図２〜図５は、タイヤビードの円筒貼合せの製造工
程を示し、まず図２及び図３に示すように、ビ−ドクラ
ンプリング５と、サポートリング６とに保持されたビ−
ドコア３の上面外周部に、前記フィラー１ａの薄肉の突
起部１ｂの側面を円筒状に貼合せて巻付ける。Further, by using an abacus spherical guide roll 4 as shown by the one-dot chain line in FIG. Next, a method of manufacturing a tire bead will be described. 2 to 5 show a manufacturing process of the cylinder bonding of the tire bead. First, as shown in FIGS. 2 and 3, the bead held by the bead clamp ring 5 and the support ring 6 are shown.
The side surface of the thin projection 1b of the filler 1a is attached to the outer periphery of the upper surface of the core 3 in a cylindrical shape and wound.
【００１３】この時、折返し部Ｘに算盤球状のガイドロ
ール４を当てることにより、折返し端をビ−ドコア３の
周上へ均一となる巻付けが出来る。そして、ビードフィ
ラー１の端末部を切断し、その端末部が先端と合さるよ
うに圧着して巻付る。この状態からフィラー１ａの内側
先端１ｄ側を、ビ−ドコア３の側部に配設されたブラダ
ー７にエアーを導入することによって膨脹させ、図４に
示すように、プッシャーリング８でブラダー７を立上が
らせフィラー１ａを９０度〜１２０度拡張させながら起
立させる。At this time, by applying an aspheric spherical guide roll 4 to the folded portion X, the folded end can be uniformly wound around the periphery of the bead core 3. Then, the terminal portion of the bead filler 1 is cut, and the terminal portion is pressure-bonded and wound so that the terminal portion is aligned with the tip. From this state, the inside tip 1d side of the filler 1a is inflated by introducing air into the bladder 7 disposed on the side of the bead core 3, and as shown in FIG. The filler 1a is raised while being expanded by 90 to 120 degrees.
【００１４】そして、ビードコア３の外側に配設された
サポートリング６にその背面側を圧着させ、また同時に
ビードフィラー１の底面を薄肉突起部１ａと突起部１ｂ
との接合面２を接着させるものである。そして、図５に
示すようにプッシャーリング８を後退させると共に、ブ
ラダー７の空気を抜き、収縮させてタイヤビードを取り
出すことにより、作業は終了する。Then, the back side of the support ring 6 is pressed against the support ring 6 disposed outside the bead core 3, and at the same time, the bottom surface of the bead filler 1 is thinned by the thin projections 1a and 1b.
The bonding surface 2 is bonded. Then, as shown in FIG. 5, the pusher ring 8 is retracted, and the bladder 7 is evacuated and contracted to take out the tire bead, thereby completing the operation.
【００１５】以上のように、フィラー１ａの底部と突起
部１ｂとの内側接合面２を、予め折返し部Ｘに向って所
定の傾斜角度でテーパ面を形成してあるので、ビードコ
ア３に対してフィラー１ａと突起部１ｂとを略直線状に
起立させて貼付けることが出来ると共に、フィラー１ａ
をビードコア３に対して精度良く貼付けることが出来
る。またビードフィラー１の端末部のスプライスが自動
化出来、更にタイヤビードの製品精度を向上させること
が出来るものである。As described above, since the inner joint surface 2 between the bottom of the filler 1a and the projection 1b is formed with a tapered surface at a predetermined inclination angle toward the folded portion X, the bead core 3 The filler 1a and the protruding portion 1b can be stuck upright in a substantially linear manner, and the filler 1a can be stuck.
Can be accurately attached to the bead core 3. Further, the splice at the end of the bead filler 1 can be automated, and the product accuracy of the tire bead can be further improved.
【００１６】また、折返し部Ｘに算盤球状のガイドロー
ル４を使用するのは、折返し起立部をビードコア３の側
面と周上に一致させるためである。The reason why the aspherical guide roll 4 is used for the folded portion X is to make the folded upright portion coincide with the side surface of the bead core 3 on the circumference.
【００１７】[0017]
【発明の効果】この発明は、上記のようにフィラーの底
部と突起部との接合面の長さを同じ幅に形成すると共
に、突起部側面の厚さとフィラーの底部を起立させた際
に突起部側面と同一位置に来る部分の厚さを折返し部の
厚さよりも厚く形成し、接合面を折返し部に向って所定
の傾斜角度で形成しておき、前記ビードコアの外周面上
に、フィラーの底部に連結された突起部を貼付ける際、
前記接合面の折返し部に算盤球状のガイドロールを押し
当てながら、前記折返し部を支点としてフィラーを順次
起立させ、ビードコアに一致させた状態で、フィラーの
側面と突起部の側面とを略直線状に起立させるようにし
たので、フィラーを突出部に略垂直に起立させて貼付け
ることが出来ると共に、フィラーをビードコアに対して
精度良く貼付けることが出来、ビードフィラーの端末部
のスプライスが自動化出来、更にタイヤビードの製品精
度を向上させることが出来る効果がある。Effects of the Invention The present invention, bottom of the filler, as described above
When the length of the joint surface between the projection and the projection is formed to the same width,
When the thickness of the side of the projection and the bottom of the filler are raised
The thickness of the part that comes to the same position as the side of the protrusion
Formed thicker than the thickness, and the bonding surface is specified toward the folded part
Formed on the outer peripheral surface of the bead core.
When attaching the projection connected to the bottom of the filler,
Push a spherical guide roll on the abacus into the folded part of the joining surface
While applying the filler, the filler is sequentially
Stand up, match the bead core,
The side surface and the side surface of the protruding part are set up almost linearly , so that the filler can be stuck almost vertically to the protruding part and stuck, and the filler can be stuck to the bead core accurately. This has the effect that the splice at the end of the bead filler can be automated and the product accuracy of the tire bead can be further improved.
【００１８】また円筒貼りであるためビードフィラー先
端と端末部とのスプライスを自動化することが出来、更
にブラダーによって立ち上がらせるため、ビードフィラ
ーが均一に伸びタイヤユニフォ−ミティを向上させるこ
とが出来る。更に折返し起立部に算盤球状のガイドロー
ルを使用して巻付けることにより、結果として精度良く
貼付けることが出来る効果がある。[0018] Further, the splicing between the tip of the bead filler and the terminal portion can be automated due to the cylindrical attachment, and the bead filler can be evenly raised because the bead is raised by the bladder, so that the tire uniformity can be improved. Further, by using a spherical roll of abacus around the turning upright portion, there is an effect that it can be attached with high accuracy as a result.
【図１】この発明を実施したビードフィラーの断面図で
ある。FIG. 1 is a sectional view of a bead filler embodying the present invention.
【図２〜図５】この発明の製造工程を示す説明図であ
る。FIG. 2 to FIG. 5 are explanatory views showing manufacturing steps of the present invention.
【図６】従来のビードフィラーの断面図である。FIG. 6 is a cross-sectional view of a conventional bead filler.
【図面の符号】１ ビードフィラー １ａ
フィラー １ｂ 突起部 ２ 接合面 ３ ビ−ドコア ４ ガイドロ−ル ７ ブラダー Ｘ 折返し部。[Signs in the drawing] 1 Bead filler 1a
Filler 1b Projection 2 Joining surface 3 Bead core 4 Guide roll 7 Bladder X Turn-up part.
Claims (1)
部に連結された突起部を貼付け、フィラーを起立させて
フィラーの底部と突起部とを貼付けてビ−ドフィラーを
成形するタイヤビードの製造方法において、前記フィラーの底部と突起部との接合面の長さを同じ幅
に形成すると共に、突起部側面の厚さとフィラーの底部
を起立させた際に突起部側面と同一位置に来る部分の厚
さを折返し部の厚さよりも厚く形成し、接合面を折返し
部に向って所定の傾斜角度で形成しておき、前記ビード
コアの外周面上に、フィラーの底部に連結された突起部
を貼付ける際、前記接合面の折返し部に算盤球状のガイ
ドロールを押し当てながら、前記折返し部を支点として
フィラーを順次起立させ、ビードコアに一致させた状態
で、フィラーの側面と突起部の側面とを略直線状に起立
させる タイヤビードの製造方法。1. A method for manufacturing a tire bead in which a projection connected to the bottom of a filler is pasted on the outer peripheral surface of a bead core, and the bottom of the filler and the projection are pasted by erecting the filler to form a bead filler. Wherein the length of the joint surface between the bottom of the filler and the projection is the same width
And the thickness of the side of the protrusion and the bottom of the filler
Thickness of the part that comes to the same position as the side of the protrusion when erecting
Is formed thicker than the thickness of the folded part, and the joint surface is folded
The bead is formed at a predetermined inclination angle toward the
On the outer peripheral surface of the core, a protrusion connected to the bottom of the filler
When attaching a
While pressing the droll, use the folded part as a fulcrum
The filler is sequentially raised and aligned with the bead core
So that the side of the filler and the side of the protrusion stand up in a substantially straight line
Method of manufacturing makes the tire bead.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2408685A JP3066769B2 (en) | 1990-12-28 | 1990-12-28 | Method of manufacturing tire beads |
| US07/920,450 US5294275A (en) | 1990-12-28 | 1991-12-25 | Method of attaching a bead filler to a bead core |
| PCT/JP1991/001760 WO1992012002A1 (en) | 1990-12-28 | 1991-12-25 | Method of manufacturing tire bead |
| DE19914193389 DE4193389T1 (en) | 1990-12-28 | 1991-12-25 | |
| KR1019920702056A KR0170751B1 (en) | 1990-12-28 | 1991-12-25 | Method of attaching a bead filler to a bead core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2408685A JP3066769B2 (en) | 1990-12-28 | 1990-12-28 | Method of manufacturing tire beads |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04255335A JPH04255335A (en) | 1992-09-10 |
| JP3066769B2 true JP3066769B2 (en) | 2000-07-17 |
Family
ID=18518106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2408685A Expired - Lifetime JP3066769B2 (en) | 1990-12-28 | 1990-12-28 | Method of manufacturing tire beads |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3066769B2 (en) |
| KR (1) | KR0170751B1 (en) |
| DE (1) | DE4193389T1 (en) |
| WO (1) | WO1992012002A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4785290B2 (en) * | 2001-07-30 | 2011-10-05 | 株式会社ブリヂストン | Bead with stiffener |
| JP4643215B2 (en) * | 2004-10-05 | 2011-03-02 | 株式会社ブリヂストン | Manufacturing method of bead part for pneumatic tire |
| JP6126957B2 (en) * | 2013-09-17 | 2017-05-10 | 東洋ゴム工業株式会社 | Pneumatic tire manufacturing method |
| JP7119942B2 (en) * | 2018-11-22 | 2022-08-17 | 住友ゴム工業株式会社 | Tire manufacturing method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6031662B2 (en) * | 1977-10-17 | 1985-07-23 | トクセン工業株式会社 | Method for manufacturing tire beads |
| JPS5842110Y2 (en) * | 1978-02-21 | 1983-09-22 | 横浜ゴム株式会社 | Dies for extrusion molding |
| JPS6246634A (en) * | 1985-08-26 | 1987-02-28 | Yokohama Rubber Co Ltd:The | Manufacture of tire bead |
-
1990
- 1990-12-28 JP JP2408685A patent/JP3066769B2/en not_active Expired - Lifetime
-
1991
- 1991-12-25 DE DE19914193389 patent/DE4193389T1/de not_active Withdrawn
- 1991-12-25 KR KR1019920702056A patent/KR0170751B1/en not_active IP Right Cessation
- 1991-12-25 WO PCT/JP1991/001760 patent/WO1992012002A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| KR0170751B1 (en) | 1999-03-30 |
| DE4193389T1 (en) | 1993-01-28 |
| WO1992012002A1 (en) | 1992-07-23 |
| JPH04255335A (en) | 1992-09-10 |
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