JPH06234124A - Die for tire vulcanization - Google Patents
Die for tire vulcanizationInfo
- Publication number
- JPH06234124A JPH06234124A JP4597993A JP4597993A JPH06234124A JP H06234124 A JPH06234124 A JP H06234124A JP 4597993 A JP4597993 A JP 4597993A JP 4597993 A JP4597993 A JP 4597993A JP H06234124 A JPH06234124 A JP H06234124A
- Authority
- JP
- Japan
- Prior art keywords
- tire
- bead
- cut
- die
- ring
- 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
Links
Landscapes
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はタイヤ加硫用金型に関す
る。FIELD OF THE INVENTION The present invention relates to a tire vulcanizing mold.
【０００２】[0002]
【従来の技術】タイヤ加硫用金型に於て、未加硫タイヤ
のビード部に対応する部分には、ビードリングが用いら
れており、このビードリングは、従来、１つの金属ブロ
ック素材にて構成された単一構造であった。2. Description of the Related Art In a tire vulcanizing mold, a bead ring is used at a portion corresponding to a bead portion of an unvulcanized tire. This bead ring is conventionally made of one metal block material. It was a single structure composed of
【０００３】そのため、タイヤ加硫用金型内にセットさ
れた未加硫タイヤを加硫すべく、該金型内面に未加硫タ
イヤを圧接させようとすると、ビード部とビードリング
との間において、エアーが逃げずに封じ込まれてしま
い、様々な工程不良が発生する虞がある。Therefore, in order to vulcanize the unvulcanized tire set in the tire vulcanizing mold, when the unvulcanized tire is pressed against the inner surface of the mold, a gap between the bead portion and the bead ring is generated. In the above, the air is trapped without escape and various process defects may occur.
【０００４】その防止対策として、ビードリングに、ソ
ーカットやベントホールを開けて、上記エアーを逃がす
ようにしていた。As a preventive measure, a saw cut or a vent hole is opened in the bead ring so that the air can escape.
【０００５】[0005]
【発明が解決しようとする課題】しかし、加硫の際の圧
力と熱等によって、タイヤのゴムが、ソーカットやベン
トホールに流入して、加硫後のタイヤのビード部には、
大きく突出するソーカット跡やスピュー残り等が生じる
ために、外観を損ね、チューブレスのタイヤ等では、リ
ムとの密着性が悪くなって、エアーシール性能に弊害を
及ぼす原因となり、好ましくなかった。However, the rubber of the tire flows into the saw cuts and vent holes due to pressure and heat during vulcanization, and the bead portion of the vulcanized tire is
Saw cut marks and spew residues that largely protrude are generated, which impairs the appearance and causes poor adhesion to the rim in a tubeless tire or the like, which is a cause of adverse effect on air seal performance, which is not preferable.
【０００６】そこで本発明は、エアーシール性能の低下
を防止でき、タイヤの外観を損ねることがないタイヤ加
硫用金型を提供することを目的とする。Therefore, it is an object of the present invention to provide a tire vulcanizing mold capable of preventing the deterioration of the air seal performance and not impairing the appearance of the tire.
【０００７】[0007]
【課題を解決するための手段】本発明は、上記目的を達
成するために、未加硫タイヤのビード部に対応するビー
ドリングを備えると共に、該ビードリングは、同一金属
ブロック素材を切断してその切断面がエアー透過用の微
小間隙を形成するように溶接等にて連結一体化して構成
されている。In order to achieve the above object, the present invention is provided with a bead ring corresponding to a bead portion of an unvulcanized tire, and the bead ring is formed by cutting the same metal block material. The cut surface is connected and integrated by welding or the like so as to form a minute gap for air permeation.
【０００８】[0008]
【作用】タイヤ加硫時に、ビードリングとビード部の間
に残留しようとするエアーを、ビードリングの微小間隙
から外部へ排出できる。しかも、微小間隙であるから、
これによって、加硫後のタイヤのビード部の外周面に残
る跡も、ケガキ線程度で済む。When the tire is vulcanized, the air that tends to remain between the bead ring and the bead portion can be discharged to the outside from the minute gap of the bead ring. Moreover, because it is a minute gap,
As a result, the marks left on the outer peripheral surface of the bead portion of the tire after vulcanization can be marked with marking lines.
【０００９】[0009]
【実施例】以下実施例を示す図面に基づいて本発明を詳
説する。The present invention will be described in detail below with reference to the drawings showing the embodiments.
【００１０】図１は、本発明に係るタイヤ加硫用金型の
一例であり、この金型１は、トレッド対応部２、サイド
ウォール対応部３及びビードリング４を、各々、上下一
対備え、金型１内に、未加硫タイヤＴがセットされる。FIG. 1 shows an example of a tire vulcanizing mold according to the present invention. The mold 1 is provided with a tread corresponding portion 2, a sidewall corresponding portion 3 and a bead ring 4 in a pair of upper and lower portions, respectively. An unvulcanized tire T is set in the mold 1.
【００１１】５は未加硫タイヤＴの内面にセットされた
ブラダーで、タイヤ加硫時に、ブラダー５を介して内圧
を掛け、未加硫タイヤＴを金型１内面に押圧して密着さ
せることができる。Reference numeral 5 is a bladder set on the inner surface of the unvulcanized tire T, and when the tire is vulcanized, internal pressure is applied through the bladder 5 so that the unvulcanized tire T is pressed against the inner surface of the mold 1 to be in close contact therewith. You can
【００１２】次に、図１と図２に示すように、環状のビ
ードリング４は、加硫タイヤＴのビード部６が圧接する
凹状外周面７と、複数段の軸外方端面部８を有し、さら
に、凹状外周面７には、未加硫タイヤＴのヒール部９が
圧接するヒール圧接周面部10を有している。Next, as shown in FIG. 1 and FIG. 2, the annular bead ring 4 has a concave outer peripheral surface 7 against which the bead portion 6 of the vulcanized tire T is in pressure contact and a plurality of axial outer end surface portions 8. Further, the concave outer peripheral surface 7 has a heel pressure contact peripheral surface portion 10 with which the heel portion 9 of the unvulcanized tire T is in pressure contact.
【００１３】また、ビードリング４は、内リング体11と
外リング体12を備える。この内外リング体11，12は、環
状の同一金属ブロック素材を、ヒール圧接周面部10と、
軸外方端面部８とを結ぶテーパ状の周面に沿って、一旦
切断して、切断面13，14にてエアー透過用の環状微小間
隙15が形成されるように、内リング体11と外リング体12
を、軸外方端面部８側において溶接Ｗにて再度連結一体
化して、二重構造のビードリング４を構成する。The bead ring 4 has an inner ring body 11 and an outer ring body 12. The inner and outer ring bodies 11 and 12 are made of the same annular metal block material as the heel pressure contact peripheral surface portion 10,
The inner ring body 11 and the inner ring body 11 are cut so as to form an annular minute gap 15 for air permeation at the cut surfaces 13 and 14 along the taper-shaped peripheral surface connecting the axial outer end surface portion 8. Outer ring body 12
Are re-connected and integrated by welding W on the shaft outer end face 8 side to form a bead ring 4 having a double structure.
【００１４】なお、微小間隙15の軸外方端面部８側の開
口端全体を塞がないように、内外リング体11，12への溶
接Ｗは、周方向に間隔をあけて非連続で行う。この内外
リング体11，12の切断面13，14は、図１，図２の断面図
に示すように、直線の方が外観上好ましい。The welding W to the inner and outer ring bodies 11 and 12 is performed discontinuously at intervals in the circumferential direction so as not to close the entire opening end of the minute gap 15 on the axially outer end face portion 8 side. . The cut surfaces 13 and 14 of the inner and outer ring bodies 11 and 12 are preferably straight lines as shown in the sectional views of FIGS. 1 and 2.
【００１５】また、ヒール圧接周面部10にて切断して、
微小間隙15を形成しているのは、タイヤ加硫時に、未加
硫タイヤＴのヒール部９とヒール圧接周面部10との間
が、最もエアーが留り易い所だからである。Also, cut at the heel pressure contact peripheral surface portion 10,
The minute gaps 15 are formed because air is most likely to stay between the heel portion 9 and the heel pressure contact peripheral surface portion 10 of the unvulcanized tire T during tire vulcanization.
【００１６】しかして、タイヤ加硫時に、金型１内にセ
ットされた未加硫タイヤＴが、ブラダー５にて該金型１
内面に押しつけられると、ビードリング４とビード部６
の間のエアーが、ヒール圧接周面部10に追いやられて、
微小間隙15から外部へ逃げ、ビードリング４の凹状外周
面７に沿って、ビード部６を完全に密着させることがで
きる。Therefore, at the time of vulcanizing the tire, the unvulcanized tire T set in the mold 1 is moved to the mold 1 by the bladder 5.
When pressed against the inner surface, the bead ring 4 and the bead portion 6
The air between is pushed away by the heel pressure contact peripheral surface part 10,
The bead portion 6 can be completely adhered along the concave outer peripheral surface 7 of the bead ring 4 by escaping from the minute gap 15 to the outside.
【００１７】また、タイヤ加硫時にタイヤＴのゴムは、
微小間隙15に流入しにくく、加硫後のタイヤＴのビード
部６には、リム組付け時のエアーシール性能に悪影響を
与えないケガキ線程度の微細な跡しか残らない。Further, when the tire is vulcanized, the rubber of the tire T is
It is difficult to flow into the minute gaps 15, and only small marks such as marking lines that do not adversely affect the air seal performance during rim assembly are left on the bead portion 6 of the tire T after vulcanization.
【００１８】この微小間隙15の間隔Ｇは、50μｍ〜100
μｍの範囲とするのが最も好ましく、間隔Ｇが50μｍ未
満であると、タイヤ加硫時におけるエアーの排出が困難
となり、また、100 μｍを越えると、タイヤのゴムが流
入して加硫後のタイヤのビード部６に大きなバリが生
じ、エアーシール性及び外観を損なうためである。The interval G of the minute gap 15 is 50 μm to 100 μm.
The most preferable range is μm, and if the gap G is less than 50 μm, it becomes difficult to discharge air during tire vulcanization, and if it exceeds 100 μm, the rubber of the tire flows in to cause vulcanization after vulcanization. This is because a large burr is generated on the bead portion 6 of the tire, impairing the air sealability and the appearance.
【００１９】このような微小な間隔Ｇとするには、上述
の如く１つの金属ブロック素材を切断して内外リング体
11，12を製作し両者を再連結するのが良く、２つの金属
ブロック素材にて別個に内外リング体11，12を製作して
連結するよりも、微小間隙15の間隔Ｇを狭くすることが
できる。In order to obtain such a minute gap G, one metal block material is cut as described above to form the inner and outer ring bodies.
It is better to manufacture 11 and 12 and reconnect them, and it is possible to make the gap G of the minute gap 15 narrower than to manufacture and connect the inner and outer ring bodies 11 and 12 separately with two metal block materials. it can.
【００２０】なお、本発明は上述の実施例に限定され
ず、本発明の要旨を逸脱しない範囲で設計変更自由であ
る。The present invention is not limited to the above-mentioned embodiments, and design changes can be freely made without departing from the gist of the present invention.
【００２１】例えば、図示省略するが、内外リング体1
1，12を、溶接でなく、ネジ込み式にして連結するも自
由である。また、ヒール圧接周面部10を除いた凹状外周
面７と、軸外方端面部８とを結ぶ周面に沿った切断面1
3，14で、微小間隙15を形成するも自由である。For example, although not shown, the inner and outer ring bodies 1
It is also free to connect 1 and 12 by screwing instead of welding. In addition, the cut surface 1 along the peripheral surface connecting the concave outer peripheral surface 7 excluding the heel pressure contact peripheral surface portion 10 and the shaft outer end surface portion 8
It is also free to form the minute gap 15 by 3 and 14.
【００２２】[0022]
【発明の効果】本発明は上述の如く構成されているの
で、次に記載するような著大な効果を奏する。Since the present invention is constructed as described above, it has the following great effects.
【００２３】タイヤ加硫時に、未加硫タイヤＴのビード
部６とビードリング４との間に留まろうとするエアー
を、ビードリング４の微小間隙15から、外部へ逃がすこ
とができ、しかも、加硫後のタイヤのビード部６の外周
面には、ケガキ線程度の微細な跡しか残らない。At the time of vulcanizing the tire, the air that tends to stay between the bead portion 6 and the bead ring 4 of the unvulcanized tire T can escape to the outside from the minute gap 15 of the bead ring 4, and After the vulcanization, only minute marks such as marking lines are left on the outer peripheral surface of the bead portion 6 of the tire.
【００２４】従って、タイヤとリムの密着性が良好とな
って、エアーシール性能が低下する虞がなく、かつ、外
観を損ねることもない。Therefore, the adhesion between the tire and the rim is improved, the air seal performance is not deteriorated, and the appearance is not spoiled.
【図１】本発明の一実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】要部断面図である。FIG. 2 is a sectional view of a main part.
４ ビードリング ６ ビード部 13 切断面 14 切断面 15 微小間隙 Ｔ 未加硫タイヤ Ｗ 溶接 4 Bead ring 6 Bead portion 13 Cut surface 14 Cut surface 15 Minute gap T Unvulcanized tire W Weld
Claims (1)
ビードリング４を備えると共に、該ビードリング４は、
同一金属ブロック素材を切断してその切断面13，14がエ
アー透過用の微小間隙15を形成するように溶接Ｗ等にて
連結一体化して構成されていることを特徴とするタイヤ
加硫用金型。1. A bead ring 4 corresponding to a bead portion 6 of an unvulcanized tire T is provided, and the bead ring 4 is
A tire vulcanizing metal, characterized in that the same metal block material is cut and the cut surfaces 13 and 14 are connected and integrated by welding W or the like so as to form a minute gap 15 for air permeation. Type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4597993A JPH06234124A (en) | 1993-02-10 | 1993-02-10 | Die for tire vulcanization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4597993A JPH06234124A (en) | 1993-02-10 | 1993-02-10 | Die for tire vulcanization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06234124A true JPH06234124A (en) | 1994-08-23 |
Family
ID=12734315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4597993A Pending JPH06234124A (en) | 1993-02-10 | 1993-02-10 | Die for tire vulcanization |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06234124A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004098714A (en) * | 2002-09-04 | 2004-04-02 | Sumitomo Rubber Ind Ltd | Pneumatic tire, manufacturing method for pneumatic tire and tire vulcanizing mold |
| JP2012236303A (en) * | 2011-05-11 | 2012-12-06 | Sumitomo Rubber Ind Ltd | Tire vulcanizing mold |
| JP2014065151A (en) * | 2012-09-24 | 2014-04-17 | Sumitomo Rubber Ind Ltd | Bead ring |
| JP2015145114A (en) * | 2014-02-04 | 2015-08-13 | 株式会社ブリヂストン | Tire vulcanizing mold, method for producing tire, and tire |
| JP2016150540A (en) * | 2015-02-18 | 2016-08-22 | 住友ゴム工業株式会社 | Bead ring |
| JP2018015908A (en) * | 2016-07-25 | 2018-02-01 | 東洋ゴム工業株式会社 | Tire Vulcanization Molding Method |
| US20200207043A1 (en) * | 2017-07-20 | 2020-07-02 | Bridgestone Americas Tire Operations, Llc | Bead ring design improvement |
| KR20220055134A (en) | 2020-10-26 | 2022-05-03 | 넥센타이어 주식회사 | Tire beadring |
-
1993
- 1993-02-10 JP JP4597993A patent/JPH06234124A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004098714A (en) * | 2002-09-04 | 2004-04-02 | Sumitomo Rubber Ind Ltd | Pneumatic tire, manufacturing method for pneumatic tire and tire vulcanizing mold |
| JP2012236303A (en) * | 2011-05-11 | 2012-12-06 | Sumitomo Rubber Ind Ltd | Tire vulcanizing mold |
| JP2014065151A (en) * | 2012-09-24 | 2014-04-17 | Sumitomo Rubber Ind Ltd | Bead ring |
| CN105960316A (en) * | 2014-02-04 | 2016-09-21 | 株式会社普利司通 | Tire vulcanizing mold, tire manufacturing method, and tire |
| WO2015118910A1 (en) * | 2014-02-04 | 2015-08-13 | 株式会社ブリヂストン | Tire vulcanizing mold, tire manufacturing method, and tire |
| JP2015145114A (en) * | 2014-02-04 | 2015-08-13 | 株式会社ブリヂストン | Tire vulcanizing mold, method for producing tire, and tire |
| CN105960316B (en) * | 2014-02-04 | 2017-11-24 | 株式会社普利司通 | Tire vulcanization mold, tire manufacturing method and tire |
| US10414109B2 (en) | 2014-02-04 | 2019-09-17 | Bridgestone Corporation | Tire vulcanizing mold, tire manufacturing method, and tire |
| JP2016150540A (en) * | 2015-02-18 | 2016-08-22 | 住友ゴム工業株式会社 | Bead ring |
| JP2018015908A (en) * | 2016-07-25 | 2018-02-01 | 東洋ゴム工業株式会社 | Tire Vulcanization Molding Method |
| US20200207043A1 (en) * | 2017-07-20 | 2020-07-02 | Bridgestone Americas Tire Operations, Llc | Bead ring design improvement |
| US10814573B2 (en) * | 2017-07-20 | 2020-10-27 | Bridgestone Americas Tire Operations, Llc | Bead ring design improvement |
| KR20220055134A (en) | 2020-10-26 | 2022-05-03 | 넥센타이어 주식회사 | Tire beadring |
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