JPH0367614A - Tire vulcanizing jig in precuring method - Google Patents

Tire vulcanizing jig in precuring method

Info

Publication number
JPH0367614A
JPH0367614A JP20429289A JP20429289A JPH0367614A JP H0367614 A JPH0367614 A JP H0367614A JP 20429289 A JP20429289 A JP 20429289A JP 20429289 A JP20429289 A JP 20429289A JP H0367614 A JPH0367614 A JP H0367614A
Authority
JP
Japan
Prior art keywords
tire
steel ring
annular
rubber ring
jig
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
JP20429289A
Other languages
Japanese (ja)
Inventor
Akira Hijikata
土方 章
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.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
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.)
Filing date
Publication date
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP20429289A priority Critical patent/JPH0367614A/en
Publication of JPH0367614A publication Critical patent/JPH0367614A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To improve the productivity, make it into light-load and shorten the vulcanizing period of time by folding a steel ring at folding points A, B, C respectively, and setting it on the joining parts of a rubber ring in order to be jointed on the inner periphery of a tire bead, and then moving the folding point B outward so as to make it annular, and thus rendering it larger than the inner peripheral length of the tire bead. CONSTITUTION:An annular steel ring 12 is jointed at folding points A, B, C by means of hinges 16, 18, 20. Herein, the central angle acute angleAOB and acute angleBOC are equal, and acute angleAOC is made 180 deg. or less. Where the force approximately euqal to the dead weight of a tire effects to the folding point B in the tire radial outside direction, it becomes an annular shape. The outer peripheral length of single body of a rubber ring 14 is made smaller than the inner periph eral length of a tire bead 22, and when combined with the steel ring 12 and then the steel ring is made annular, it is made larger than the inner peripheral length thereof. In the inner periphery of the rubber ring 14, flanges 14A are formed along the inner periphery as combined parts. Accordingly, the assembly and detachment of tube, flap and rim are made unnecessary, and heating can also be carried out from the tire inner surface 23.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はプレキユーア方式タイヤ加硫治具、特にトレン
ドをカーカス上に加硫させる場合、空気漏れを防止する
ためタイヤのリートレッド用エンベロツブをタイヤカー
カスに対してシールするプレキユーア方式タイヤ加硫治
具に関する。
[Detailed Description of the Invention] [Industrial Application Field] The present invention is a pre-cure tire vulcanizing jig, in particular, when vulcanizing Trend onto a carcass, an enveloping tube for a tire reel tread is used to prevent air leakage. This invention relates to a pre-cure tire curing jig that seals against the carcass.

〔従来の技術〕[Conventional technology]

従来予備成形し、予備硬化したプレキューアトレッドを
使用するタイヤのリートレッドにおいては、第5図に示
される如く、成形済タイヤ50にエンベロツブ52をセ
ットした後、チューブ54、フラップ56を挿入し、リ
ム58及びリムフランジ60をセットする。これによっ
てリムフランジ60とタイヤ側壁50Aとの間でエンペ
ロツブ端52Aをシールするようになっている。
In conventional tire treads that use a pre-cured tread that has been pre-formed and pre-cured, as shown in FIG. Set the rim 58 and rim flange 60. This seals the envelope end 52A between the rim flange 60 and the tire side wall 50A.

しかしながらこのリートレッドにおいては、リム58が
重く、作業が重労働である。またチューブ54、フラッ
プ56及びリム58の組付、取外しの時間が長くなる。
However, in this Lee tread, the rim 58 is heavy and the work is laborious. Furthermore, the time required for assembling and disassembling the tube 54, flap 56, and rim 58 becomes longer.

またチューブ54にはエアーを充填するので、タイヤ5
0の内面50Bは加熱できないため、タイヤ50の外面
50Cからのみ加硫することになり、加硫時間が長くな
る。これらからり−トレッドタイヤの生産性が極めて悪
かった。
Also, since the tube 54 is filled with air, the tire 5
Since the inner surface 50B of the tire 50 cannot be heated, only the outer surface 50C of the tire 50 is vulcanized, which increases the vulcanization time. The productivity of these Kara-tread tires was extremely poor.

これを改善するプレキユーア方式タイヤ加硫治具として
、特開昭61−220834号公報が開示されている。
JP-A-61-220834 discloses a pre-cure type tire vulcanization jig that improves this problem.

第6図に示される如く、このプレキユーア方式タイヤ加
硫治具62においては、一対の剛性環状リング64をタ
イヤカーカスピードの内縁部の周囲及び外側に対して各
々取付け、剛性環状リング64に所定間隔で設けられた
スプリング66及びこれらのスプリング66の一部に設
けられたスペーサブロック68によって、エンペロツブ
70のシーリングを行っている。
As shown in FIG. 6, in this pre-cure type tire vulcanization jig 62, a pair of rigid annular rings 64 are attached to the circumference and outside of the inner edge of the tire carker speed, respectively, and the rigid annular rings 64 are attached at predetermined intervals. The envelope tube 70 is sealed by the springs 66 provided in the figure and the spacer blocks 68 provided on some of these springs 66.

しかしながらこのプレキユーア方式タイヤ加硫治具62
においては、スペーサブロック68が無い部分は、スプ
リング66による締め付けの反力が不足するため、シー
ルが不確実で漏れが発生し製品不良となる。またこのプ
レキユーア方式タイヤ加硫治具62は、部材数が多く着
脱に時間がかかり、かつタイヤを立てた状態で脱着が出
来ないので専用テーブル上へのタイヤ着脱作業が必要と
なり生産性が悪い。
However, this pre-cure type tire curing jig 62
In the part without the spacer block 68, the reaction force of the tightening by the spring 66 is insufficient, so the seal is uncertain, leakage occurs, and the product is defective. In addition, this pre-cure type tire vulcanization jig 62 has a large number of parts and takes time to attach and detach, and since the tire cannot be attached and detached while the tire is in an upright position, it is necessary to attach and detach the tire on a dedicated table, resulting in poor productivity.

また、他のプレキユーア方式タイヤ加硫治具として、特
開昭62−216737号公報が開示されている。
Further, another pre-cure type tire vulcanizing jig is disclosed in Japanese Patent Application Laid-Open No. 62-216737.

第7図に示される如く、このプレキユーア方式タイヤ加
硫治具72においては、金属バンド74の廻りにゴムリ
ング76が配置されており、係止機構78を操作するこ
とによって、金属バンド74の重合端が摺動し、エンペ
ロツブのシーリングを行うようになっている。
As shown in FIG. 7, in this pre-cure tire vulcanization jig 72, a rubber ring 76 is arranged around a metal band 74, and by operating a locking mechanism 78, the metal band 74 is polymerized. The end slides to seal the envelope.

しかしながらこのプレキユーア方式タイヤ加硫治具72
においては、係止機構78が複雑で部品点数及び可動部
分が多いため、プレキューア方式タイヤ加硫治具72全
体の重量が増加するとともに、故障の原因となっている
However, this pre-cure type tire curing jig 72
In this case, the locking mechanism 78 is complicated and has many parts and movable parts, which increases the weight of the entire precure tire vulcanizing jig 72 and causes failure.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

本発明は上記事実を考慮し、生産性の向上及び軽労働化
が計れるとともに、加硫時間を短縮することができるプ
レキユーア方式タイヤ加硫治具を得ることが目的である
In consideration of the above facts, the present invention aims to provide a pre-cure tire vulcanizing jig that can improve productivity, reduce labor, and shorten vulcanization time.

〔課題を解決するための手段及び作用〕本発明は、円周
上に折曲点ASCとこれらの折曲点A、Cの中間に配置
された折曲点B′とを有し前記折曲点ASBSCを広げ
た場合に環状となる鋼製リングと、内周側に前記鋼製リ
ングと結合するための結合部を備え前記鋼製リングが環
状とされた場合に外周長がタイヤビード内周長より大き
くなるゴム製リングと、を有することを特徴としている
[Means and effects for solving the problem] The present invention has a bending point ASC on the circumference and a bending point B' located between these bending points A and C. A steel ring that becomes annular when the point ASBSC is expanded, and a connecting part for joining the steel ring on the inner circumference side, and when the steel ring is annular, the outer circumference length is equal to the inner circumference of the tire bead. and a rubber ring that is larger than the length.

従って、鋼製リングを折曲点ASBSCでそれぞれ折曲
させゴム製リングの結合部にセットし、タイヤビード部
内周に装着する。この状態で鋼製リングの折曲点Bをタ
イヤ半径方向外側へ移動させると、鋼製リングは環状と
なり、ゴム製リングの外周長がタイヤビード部内周長よ
り大きくなってエンペロツブのシーリングが行われる。
Therefore, the steel rings are each bent at the bending point ASBSC, set at the joining portion of the rubber ring, and mounted on the inner periphery of the tire bead. In this state, when the bending point B of the steel ring is moved outward in the tire radial direction, the steel ring becomes annular and the outer circumference of the rubber ring becomes larger than the inner circumference of the tire bead, sealing the envelope. .

従って、リートレッドタイヤの生産性の向上及び軽労働
化が計れるとともに、タイヤ内面及び外面が同一温度雰
囲気となるため、タイヤ内面からも加熱でき加硫時間を
短縮することができる。
Therefore, it is possible to improve the productivity of the reed tread tire and reduce labor, and since the inner and outer surfaces of the tire are in the same temperature atmosphere, it is possible to heat the tire from the inner surface as well, thereby shortening the vulcanization time.

また、折曲点A、Cと円心Oとの角度tAOcを180
°以下、好ましくは90°以下とし、また折曲点βにタ
イヤ半径方向外側へ向けてタイヤ自重と略等しい力が作
用した場合に環状となるようにした場合には、さらに操
作性が向上しリートレッドタイヤの生産性の向上及び軽
労働化が計れる。
Also, the angle tAOc between the bending points A and C and the center O is 180
If the bending point β is set to 90° or less, preferably 90° or less, and if a force approximately equal to the tire's own weight is applied to the bending point β toward the outside in the radial direction of the tire, it will form an annular shape, further improving operability. Improved productivity and lighter labor for Leet tread tires.

〔実施例〕〔Example〕

本発明に係るプレキユーア方式タイヤ加硫治具の一実施
例を第1図〜第4図に従って説明する。
An embodiment of the pre-cure tire vulcanizing jig according to the present invention will be described with reference to FIGS. 1 to 4.

第1図〜第3図に示される如く、本発明のプレキユーア
方式タイヤ加硫治具10は、環状の鋼製リング12と、
環状のゴム製リング14とで構成されている。この鋼製
リング12は周上の3箇所でそれぞれ切断されており、
各切断端は蝶番16.18.20で接続され折曲点A、
BSCとされている。
As shown in FIGS. 1 to 3, the pre-cure tire curing jig 10 of the present invention includes an annular steel ring 12,
It is composed of an annular rubber ring 14. This steel ring 12 is cut at three points on the circumference,
Each cut end is connected by a hinge 16, 18, 20 at the bending point A,
It is considered as BSC.

第2図に示される如く、鋼製リング12の円心Oと折曲
点ASBとで構成される扇型の中心角1AOBと、円心
Oと折曲点BSCとで構成される扇型の中心角1AOc
とは等しくされており(lAOB=lBOC) 、かつ
、円心○と折曲点AlCとで構成される扇型の中心角1
AOCは180゜以下、好ましくは90°以下とされて
いる(lAOC≦90°)。
As shown in FIG. 2, a fan-shaped center angle 1AOB is formed by the center O of the steel ring 12 and the bending point ASB, and a fan-shaped center angle 1AOB is formed by the center O and the bending point BSC of the steel ring 12. Center angle 1AOc
is made equal to (lAOB=lBOC), and the central angle 1 of the sector formed by the circle center ○ and the bending point AlC
The AOC is 180° or less, preferably 90° or less (1AOC≦90°).

これらの蝶番16.18.20は、折曲点Bが鋼製リン
グ12の内側(第1図の仮想線で示される状態〉になる
ような向きに、それぞれ取付けられている。また、タイ
ヤの自重と略等しい力が折曲点Bにタイヤ半径方向外側
方向く第2図の矢印F方向)へ作用した場合には、各蝶
番16.18.20によって鋼製リング12は環状(第
2図の実線の状態)となるようになっている。
These hinges 16, 18, and 20 are installed in such a direction that the bending point B is inside the steel ring 12 (as shown by the imaginary line in FIG. 1). When a force approximately equal to its own weight is applied to the bending point B in the tire radial direction outward (in the direction of arrow F in FIG. (solid line).

ゴム製リング14単体の外周長は、第4図に示されるタ
イヤビード部22の内周長より小さくされている。また
鋼製リング12とゴム製リング14とを結合させて、鋼
製リング12を環状にした場合の、ゴム製リング14の
外周長はタイヤビード部22の内周長より大きくされて
いる。
The outer circumferential length of the rubber ring 14 alone is smaller than the inner circumferential length of the tire bead portion 22 shown in FIG. Further, when the steel ring 12 and the rubber ring 14 are combined to form the steel ring 12 into an annular shape, the outer circumferential length of the rubber ring 14 is larger than the inner circumferential length of the tire bead portion 22.

従って、ゴム製リング14単体又は、鋼製リング12を
折曲した状態では、プレキューア方式タイヤ加硫治具l
Oはタイヤビード部22に容易にセットでき、かつ鋼製
リング12とゴム製リング14とを結合させて、鋼製リ
ング12をリング状にした場合には、プレキユーア方式
タイヤ加硫治具10はタイヤビード部22の内周部に密
着するようになっている。
Therefore, when the rubber ring 14 alone or the steel ring 12 is bent, the precure method tire vulcanization jig l
O can be easily set in the tire bead part 22, and when the steel ring 12 and the rubber ring 14 are combined to form the steel ring 12 into a ring shape, the pre-cure tire vulcanization jig 10 can be used. It comes into close contact with the inner peripheral part of the tire bead part 22.

ゴム製リング14の内周部には、内周に沿って結合部と
しての鍔14Aが形成されており、この鍔14Aに沿っ
て鋼製リング12をゴム製リング14に結合できるよう
になっている。またゴム製リング14の外周部の一方の
端部には、ゴム製リング14の半径方向外側へ向けて、
鍔14Bが形成されており、ゴム製リング14をタイヤ
ビード部に取付ける場合の位置決めが容易にできるよう
になっている。
A flange 14A serving as a coupling part is formed along the inner periphery of the rubber ring 14, and the steel ring 12 can be coupled to the rubber ring 14 along this flange 14A. There is. Further, at one end of the outer circumferential portion of the rubber ring 14, toward the outside in the radial direction of the rubber ring 14,
A collar 14B is formed to facilitate positioning when attaching the rubber ring 14 to the tire bead.

一方、第2図に示される如く、ゴム製リング14の区間
A−B−Cには鋼製リング12をセットするための鍔1
4Aは形成されておらず、鋼製リング12は容易に第1
図及び第2図の仮想線で示される折り曲げ状態となるよ
うになっている。
On the other hand, as shown in FIG.
4A is not formed, and the steel ring 12 is easily attached to the first
It is designed to be in the folded state shown by the imaginary lines in the figures and FIG.

次に、本実施例の作用に付いて説明する。Next, the operation of this embodiment will be explained.

第4図に示される如く、リートレッドすべきタイヤ23
を用意し、未加硫ゴム24の薄層をパフかけしたタイヤ
23の表面に置く。この未加硫ゴム24のタイヤ半径方
向外側には、予備硬化し予備成形したプレキュア−トレ
ッドゴム26を配置する。次に、エンベロツブ28をタ
イヤ23とトレッドゴム26上に配置して、タイヤトレ
ッド面28A1サイドウオール23A1及びタイヤビー
ド部22の内端22Aまで被う。
As shown in FIG. 4, the tire 23 to be retreaded
A thin layer of unvulcanized rubber 24 is placed on the surface of the puffed tire 23. On the outside of this unvulcanized rubber 24 in the tire radial direction, a precured tread rubber 26 that has been precured and preformed is arranged. Next, the envelope 28 is placed on the tire 23 and tread rubber 26 to cover the tire tread surface 28A1, the sidewall 23A1, and the inner end 22A of the tire bead portion 22.

この状態で周上の折曲点A、B、Cでそれぞれ折り曲げ
られた鋼製I) 7グ12をゴム製リング14の鍔14
Aにセットしく第2図の仮想線の状態)、タイヤビード
部22の内周に装着する。さらに、この状態で加硫装置
のアーム(図示省略〉に折曲点Bが当接するようにプレ
キューア方式タイヤ加硫治具lO及びリートレッドすべ
きタイヤ23を係合する。これによりタイヤ23の自重
に略等しい力が折曲点Bに第2図の矢印F方向へ作用し
、折曲点Bがタイヤ半径方向外側へ移動して鋼製リング
12が環状となる。
In this state, the steel I) 7 rings 12 bent at bending points A, B, and C on the circumference are attached to the collar 14 of the rubber ring 14.
A) and attach it to the inner periphery of the tire bead portion 22 (indicated by the virtual line in FIG. 2). Furthermore, in this state, the pre-cure tire vulcanizing jig lO and the tire 23 to be retreaded are engaged so that the bending point B is in contact with the arm (not shown) of the vulcanizing device. A force approximately equal to is applied to the bending point B in the direction of the arrow F in FIG. 2, and the bending point B moves outward in the tire radial direction, so that the steel ring 12 becomes annular.

これにより、第4図に示される如く、プレキユーア方式
タイヤ加硫治具10のゴム製リング14は、エンベロツ
ブ28の端部28Aをタイヤビード部22の内周に密着
させる。従って、チューブ、フラップ、リムの組付及び
取外しが不要となり生産性の向上及び軽労働化が計れる
As a result, as shown in FIG. 4, the rubber ring 14 of the pre-cure tire vulcanization jig 10 brings the end 28A of the envelope 28 into close contact with the inner periphery of the tire bead 22. Therefore, there is no need to assemble or remove tubes, flaps, and rims, thereby improving productivity and reducing labor.

また、タイヤ内面23B及び外面が同一温度雰囲気とな
るため、タイヤ内面23Bからも加熱でき加硫時間を3
5〜40%短縮することができる。
In addition, since the inner surface 23B and the outer surface of the tire are in the same temperature atmosphere, heating can also be performed from the inner surface 23B of the tire, and the vulcanization time is 3.
It can be shortened by 5-40%.

〔発明の効果〕〔Effect of the invention〕

本発明は上記の構成としたので生産性の向上及び軽労働
化が計れるとともに、加硫時間を短縮することができる
優れた効果を有する。
Since the present invention has the above-described configuration, it has the excellent effect of improving productivity and reducing labor, as well as shortening the vulcanization time.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の実施例によるプレキューア方式タイヤ
加硫治具を示す斜視図、第2図は本発明の実施例による
プレキユーア方式タイヤ加硫治具を示すタイヤ幅方向か
ら見た断面図、第3図は第2図■−■線断面図、第4図
は本発明の実施例によるプレキユーア方式タイヤ加硫治
具をタイヤに装着した状態を示すタイヤ幅方向に沿って
切断した上半分の断面図、第5図は従来のプレキユーア
方式タイヤ加硫時の状態を示すタイヤ幅方向に沿って切
断した上半分の断面図、第6図は従来のプレキユーア方
式タイヤ加硫治具を示す斜視図、第7図は他の従来のプ
レキユーア方式タイヤ加硫治具を示す斜視図である。 10・・・プレキユーア方式タイヤ加硫治具、12・・
・鋼製リング、 14・・・ゴム製リング、 14A・・・鍔、 16.18.20・・・蝶番。
FIG. 1 is a perspective view showing a pre-cure type tire vulcanizing jig according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the pre-cure type tire vulcanizing jig according to an embodiment of the present invention, viewed from the tire width direction. Figure 3 is a sectional view taken along the line ■-■ in Figure 2, and Figure 4 is a cross-sectional view of the upper half cut along the width direction of the tire, showing the state in which the pre-cure tire curing jig according to the embodiment of the present invention is attached to the tire. 5 is a cross-sectional view of the upper half taken along the width direction of the tire showing the state during conventional pre-cure tire vulcanization, and FIG. 6 is a perspective view showing a conventional pre-cure tire vulcanization jig. , FIG. 7 is a perspective view showing another conventional pre-cure type tire curing jig. 10... Pre-cure tire curing jig, 12...
・Steel ring, 14... Rubber ring, 14A... Tsuba, 16.18.20... Hinge.

Claims (3)

【特許請求の範囲】[Claims] (1)円周上に折曲点A、Cとこれらの折曲点A、Cの
中間に配置された折曲点Bとを有し前記折曲点A、B、
Cを広げた場合に環状となる鋼製リングと、内周側に前
記鋼製リングと結合するための結合部を備え前記鋼製リ
ングが環状とされた場合に外周長がタイヤビード内周長
より大きくなるゴム製リングと、を有することを特徴と
するプレキユーア方式タイヤ加硫治具。
(1) Having bending points A, C and a bending point B placed between these bending points A, C on the circumference, the bending points A, B,
A steel ring that becomes annular when C is expanded, and a coupling part for coupling to the steel ring on the inner circumferential side, and when the steel ring is annular, the outer circumference length is the tire bead inner circumference length. A pre-cure tire vulcanizing jig characterized by having a larger rubber ring.
(2)前記折曲点A、Cと円心Oとの角度∠AOCが1
80°以下であることを特徴とする請求項(1)記載の
プレキユーア方式タイヤ加硫治具。
(2) The angle ∠AOC between the bending points A and C and the center O is 1
The pre-cure tire curing jig according to claim 1, characterized in that the angle is 80° or less.
(3)前記折曲点Bにタイヤ半径方向外側へ向けてタイ
ヤ自重と略等しい力が作用した場合に環状となることを
特徴とする請求項(1)記載のプレキユーア方式タイヤ
加硫治具。
(3) The pre-cure tire vulcanizing jig according to claim 1, wherein the jig becomes annular when a force substantially equal to the tire's own weight is applied to the bending point B toward the outside in the tire's radial direction.
JP20429289A 1989-08-07 1989-08-07 Tire vulcanizing jig in precuring method Pending JPH0367614A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20429289A JPH0367614A (en) 1989-08-07 1989-08-07 Tire vulcanizing jig in precuring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20429289A JPH0367614A (en) 1989-08-07 1989-08-07 Tire vulcanizing jig in precuring method

Publications (1)

Publication Number Publication Date
JPH0367614A true JPH0367614A (en) 1991-03-22

Family

ID=16488065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20429289A Pending JPH0367614A (en) 1989-08-07 1989-08-07 Tire vulcanizing jig in precuring method

Country Status (1)

Country Link
JP (1) JPH0367614A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9324998B2 (en) 2010-10-28 2016-04-26 Electrovaya, Inc. Method for manufacturing of slurry for production of battery film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9324998B2 (en) 2010-10-28 2016-04-26 Electrovaya, Inc. Method for manufacturing of slurry for production of battery film

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