JPS58122845A - Tire molding drum - Google Patents
Tire molding drumInfo
- Publication number
- JPS58122845A JPS58122845A JP57004690A JP469082A JPS58122845A JP S58122845 A JPS58122845 A JP S58122845A JP 57004690 A JP57004690 A JP 57004690A JP 469082 A JP469082 A JP 469082A JP S58122845 A JPS58122845 A JP S58122845A
- Authority
- JP
- Japan
- Prior art keywords
- drum
- drum body
- tire
- side flange
- pinion
- 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
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)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/24—Drums
- B29D30/244—Drums for manufacturing substantially cylindrical tyre components with cores or beads, e.g. carcasses
- B29D30/248—Drums of the undercut type without toroidal expansion, e.g. with provisions for folding down the plies, for positioning the beads under the surface of the drum
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はタイヤ成形ドラムに関し、さらに詳しくは、ア
ンダーカットタイプのタイヤ成形ドラムにおけるサイド
７う／ジをドラム本体の巾方向に移動する装懺を改良し
たタイヤ成形ドラムに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tire building drum, and more particularly to a tire building drum of an undercut type with improved mounting for moving the side 7 in the width direction of the drum body. It is something.
大型タイヤの成型ドラムは一般にアンダーカットタイプ
であり、タイヤ成形が完了した時点においては、ドラム
のサイドフランジがグリーンタイヤのビード部内周に入
り込んでいる。従ってタイヤ成形が完了してドラムを縮
径しタイヤをドラムから取出す場合、大きな縮径力を必
要とし、さらにこの力に耐え得るようにドラムおよび成
形棲自体も極めて強固に作らなければならないと云う問
題があった。そこでこの問題を解消するため、従来の成
形ドラムは、第１図に示すようにサイドフランジ３ａ
、 ３ｂをドラム本体１から取外すし得るように構成し
、グリーンタイヤ５の取出しに椰して、まず各サイド７
ランジろａ 、 ３ｂをドラム本体１から手動にて取外
すし、グリーンタイヤのビード部の抵抗を少なくしてか
らドラム本体１を縮径し、グリーンタイヤ５を取出して
いた。The molding drum for large tires is generally an undercut type, and when tire molding is completed, the side flanges of the drum enter the inner periphery of the bead portion of the green tire. Therefore, when tire molding is completed and the diameter of the drum is reduced and the tire is removed from the drum, a large diameter-shrinking force is required, and the drum and molding chamber itself must be made extremely strong to withstand this force. There was a problem. Therefore, in order to solve this problem, the conventional forming drum has a side flange 3a as shown in FIG.
, 3b can be removed from the drum body 1, and when taking out the green tire 5, each side 7 is first removed.
The lunge rollers a and 3b were manually removed from the drum body 1, the resistance at the bead of the green tire was reduced, the diameter of the drum body 1 was reduced, and the green tire 5 was taken out.
ところがサイド７ランジ３ａ 、 ３ｂは上述したよう
に、タイヤのビード部内面に入シ込んでおり、しかもサ
イドフランジは高重量のものであるから、取外すしは惨
めて困難で、相当の労力と時間を必要とする関係上経済
上あるいは安全上からも問題があった。However, as mentioned above, the side flanges 3a and 3b have entered the inner surface of the bead of the tire, and since the side flanges are heavy, it is extremely difficult to remove them, requiring considerable effort and time. There were also problems from an economic and safety perspective because of the need for
そこで本発明の出願人は上述した従来のもののｊｕｌ
％点を解消するために、前述したサイドフランジをドラ
ム本体の巾方向に移動可能に設け、ドラム縮径時にこれ
をそれぞれドラム本体の内方向に移動してタイヤビード
部から離脱せしめることにより、ドラムの縮径操作を容
易化したタイヤ原形ドラムを提案し、すでに出願公告さ
れている。（特公昭５２−２４３６号公報参照）本発明
は上述したタイヤ成形ドラムにおけるサイドフランジの
移動機構の簡素化並びに移動（ψ作の容易化を図るべく
検討した結果、導かれたものである。Therefore, the applicant of the present invention has proposed the above-mentioned conventional method.
In order to eliminate the % point, the side flanges described above are provided so as to be movable in the width direction of the drum body, and when the diameter of the drum is reduced, they are moved inward of the drum body and detached from the tire bead. We have proposed a tire original drum that facilitates the diameter reduction operation, and an application has already been published. (Refer to Japanese Patent Publication No. 52-2436) The present invention was developed as a result of studies aimed at simplifying the movement mechanism and facilitating the movement (ψ) of the side flange in the tire forming drum mentioned above.
従って本発明の目的は、サイドフランジをドラム本体の
巾方向に移動可能としたタイヤ成形ドラムの、サイド７
ランジ移動機構を簡素化して、ドラム本体の内部スペー
スの拡張を図り、よってドラム本体の拡縮機構の精度、
耐久性の向上を可能として、成形されるタイヤの品質を
向上すると共に、サイドフランジの移動操作の作業性を
著しく向上し得るようにしたタイヤ成形ドラムを提供す
ることにある。Therefore, an object of the present invention is to provide a tire forming drum with side flanges movable in the width direction of the drum body.
By simplifying the lunge movement mechanism and expanding the internal space of the drum body, the accuracy of the expansion and contraction mechanism of the drum body can be improved.
It is an object of the present invention to provide a tire molding drum that can improve durability, improve the quality of a molded tire, and significantly improve the workability of moving a side flange.
すなわち本発明は、ドラム本体の両側にサイドフランジ
をドラム本体の巾方向に移Ｎｈ可能に配置したアンダー
カットタイプのタイヤ成形ドラムにおいて、前記各サイ
ドフランジとドラム本体とをラックとピニオンで連結し
、このピニオンを回転することによって各サイドフラン
ジをドラム本体の巾方向に移動し得るように構成したタ
イヤ成形ドラムをその要旨とするものである。That is, the present invention provides an undercut type tire forming drum in which side flanges are disposed on both sides of the drum body so as to be movable in the width direction of the drum body, each of the side flanges and the drum body being connected by a rack and a pinion, The gist of the tire forming drum is a tire forming drum configured such that each side flange can be moved in the width direction of the drum body by rotating this pinion.
以下本発明を実施例により図面を参照して詳細に説明す
る。・
第２図は本発明の実施例からなるタイヤ成形ドラムの要
部断面説明図、第３図は第２図■−■矢視断面説明図で
ある。Hereinafter, the present invention will be explained in detail by way of examples with reference to the drawings. - Fig. 2 is an explanatory cross-sectional view of a main part of a tire forming drum according to an embodiment of the present invention, and Fig. 3 is an explanatory cross-sectional view taken along arrows 2--2 in Fig. 2.
図においてＥは本発明の実施例からなるタイヤ成形ドラ
ムであって、図示はされていないが円周方向に多分割さ
れ拡縮機構を備えたドラム本体１の両側に、サイド７ラ
ンジ１０ａ 、 １０ｂがトラム本体１の巾方向に移動
可能にそれぞれ配■ｅされ、前記各サイドフランジ１０
ａ 、 １０ｂとドラム本イ本１とをラック１６ａ 、
１３ｂとピニオン１１ａ。In the figure, E denotes a tire forming drum according to an embodiment of the present invention, and although not shown, side 7 lunges 10a and 10b are provided on both sides of a drum body 1 that is divided into multiple parts in the circumferential direction and equipped with an expansion and contraction mechanism. Each side flange 10 is arranged so as to be movable in the width direction of the tram body 1, and
a, 10b and the drum book 1 on the rack 16a,
13b and pinion 11a.
１１ｂで連結することにより構成されている。11b.
さらにこの構造を説明すると、本実施例においては第３
図に示すようにラック１６ａはサイドフランジ１０ａに
、ラック１３ｂはサイドフランジ１０ｂにそれぞれ取り
付けられており、これら各ラック１３ａ 、 １３ｂと
咬合するピニオン１１ａ、１１ｂは、それぞれ間隔をお
いてドラム本体１に軸受１２ａ 、 １２ｂを介して取
り付けられている。従ってピニオン１１ａ 、 １１ｂ
のどちらが一方を反時計方向に回転すると、ラック１３
ａは図示右方向に、ラック１３ｂは図示左方向に、っま
シ左右サイドフランジ１０ａ 、 １０ｂを同時にドラ
ム本体１の中心方向に移動することができ、ピニオンを
逆方向すなわち時計方向に回転すると各サイドフランジ
１０ａ 、 １０ｂを外方に同時に移動することができ
る。To further explain this structure, in this example, the third
As shown in the figure, the rack 16a is attached to the side flange 10a, and the rack 13b is attached to the side flange 10b. It is attached via bearings 12a and 12b. Therefore, pinions 11a, 11b
When either one rotates counterclockwise, the rack 13
a to the right in the drawing, the rack 13b to the left in the drawing, and the left and right side flanges 10a and 10b simultaneously to the center of the drum body 1. When the pinion is rotated in the opposite direction, that is, clockwise, each The side flanges 10a, 10b can be moved outward simultaneously.
なお図において１４２ 、１４ｂはラック案内溝であっ
て、ラック案内溝１４ａ？はサイドフランジ１０ａ側内
面に、ラック案内溝１４ｂはサイドフランジ１０ｂの側
の内面にそれぞれ第３図に示すように設けられており、
各ラックｉ、５ａ 、 １６ｂの左右方向への移動を案
内し得るようになっている。In the figure, 142 and 14b are rack guide grooves, and the rack guide grooves 14a and 14b are rack guide grooves. is provided on the inner surface on the side flange 10a side, and the rack guide groove 14b is provided on the inner surface on the side flange 10b side, as shown in FIG.
It is possible to guide the movement of each rack i, 5a, 16b in the left and right direction.
また４はカバープレートであって、第２図に示すように
、各サイドフランジ１Ｑａ 、 １０ｂとドラム本体１
との間＠ １５ａ 、 １５ｂを埋めるようにドラム本
体１にそれぞれ取り付けられている。Further, 4 is a cover plate, which, as shown in FIG.
They are respectively attached to the drum body 1 so as to fill the space between the drums 15a and 15b.
上述のように構成されているのでタイヤ成形後タイヤを
、取り出す場合は、ドラム本体１と各サイドフランジ１
０ａ 、 １０ｂの固定ボルト（図示しない）を緩め、
前述したようにピニオン１１ａ。Since the structure is as described above, when taking out the tire after tire molding, the drum body 1 and each side flange 1 must be removed.
Loosen the fixing bolts (not shown) of 0a and 10b,
As mentioned above, the pinion 11a.
１１ｂのどちらか一方を反時計方向に姻し、各サイドフ
ランジ１０ａ 、 １０ｂをそれぞれ所定距離Ｃだけド
ラム本体１の中央方向に移動して幅寄せした後、ドラム
拡縮機構（図示しない）を作動してドラム本体１を縮径
しグリーンタイヤ５を取９出すものである。11b in the counterclockwise direction, and move each side flange 10a and 10b by a predetermined distance C towards the center of the drum body 1 to align the width thereof, and then operate the drum expansion/contraction mechanism (not shown). The drum body 1 is reduced in diameter and the green tire 5 is taken out.
本発明は上述したように、サイドフランジとドラム本体
とをラックとビニオンで連結し、このピニオ／を回転す
ることによって各サイド７う／ジをドラム本体の巾方向
に移動し得るように構成したから、サイドフランジをド
ラム本体の巾方向に移動可能としたタイヤ成形ドラムの
、サイド７ランジ移動機構を著しく簡素化することがで
きて、ドラム本体の内部スペースを拡張することができ
、この結果ドラム本体の拡縮機構の％＊度、耐久性を大
きく向上することができ、成形されるタイヤの品質を向
上することができる。As described above, the present invention is configured such that the side flanges and the drum body are connected by a rack and a pinion, and each side 7 can be moved in the width direction of the drum body by rotating the pinio. Therefore, it is possible to significantly simplify the side 7 flange movement mechanism of the tire forming drum in which the side flange is movable in the width direction of the drum body, and the internal space of the drum body can be expanded. The durability of the expansion/contraction mechanism of the main body can be greatly improved by %* degree, and the quality of the molded tire can be improved.
またサイドフランジの移動操作も前述したように極めて
簡単であるのでその作業性を著しく向上することができ
る。Furthermore, since the operation of moving the side flange is extremely simple as described above, the workability can be significantly improved.
第１図は従来のタイヤ成形ドラムの要部断面説明図、第
２図は本発明の実施例からなるタイヤ成形ドラムの要部
断面説明図、第３図は第２図ｍ−ｍ矢視断面説明図であ
る。
１・・・ドラム本体、１０ａ、１０ｂ・・・サイドフラ
ンジ、１１ａ 、 １１ｂ ・・・ビニオン、１３ａ
、 １３ｂ ・・・ラック。
代理人 弁理士 小 川 信 −
弁理士 野 口 賢 照
弁理士 斎 下 和 彦Fig. 1 is an explanatory cross-sectional view of a main part of a conventional tire forming drum, Fig. 2 is an explanatory cross-sectional view of a main part of a tire forming drum according to an embodiment of the present invention, and Fig. 3 is a cross-sectional view taken along the line m-m in Fig. 2. It is an explanatory diagram. 1... Drum body, 10a, 10b... Side flange, 11a, 11b... Binion, 13a
, 13b...Rack. Agent: Patent Attorney Makoto Ogawa − Patent Attorney: Ken Noguchi Patent Attorney: Kazuhiko Saishita
Claims (1)
向に移動可能に配置したアンダーカットタイプのタイヤ
成形ドラムにおいて、前記各サイドフランジとドラム本
体とをラックとビニオンで連結し、このピニオンを回転
することによって各サイドフランジをドラム本体の巾方
向に移動し得るよう構成したことを特徴とするタイヤ成
形ドラム。In an undercut type tire forming drum in which side flanges are disposed on both sides of the drum body so as to be movable in the width direction of the drum body, each side flange and the drum body are connected by a rack and a pinion, and the pinion is rotated. A tire forming drum characterized in that each side flange is configured to be movable in the width direction of the drum body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57004690A JPS58122845A (en) | 1982-01-14 | 1982-01-14 | Tire molding drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57004690A JPS58122845A (en) | 1982-01-14 | 1982-01-14 | Tire molding drum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58122845A true JPS58122845A (en) | 1983-07-21 |
| JPH0133338B2 JPH0133338B2 (en) | 1989-07-12 |
Family
ID=11590879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57004690A Granted JPS58122845A (en) | 1982-01-14 | 1982-01-14 | Tire molding drum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58122845A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61134234A (en) * | 1984-12-04 | 1986-06-21 | Mitsubishi Heavy Ind Ltd | Bladderless drum for radial tire molding |
| WO1992007707A1 (en) * | 1990-11-02 | 1992-05-14 | Sumitomo Rubber Industries, Ltd. | Green tire building apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5239668A (en) * | 1975-09-25 | 1977-03-28 | American Cyanamid Co | Production of tetrahydrobenzo *b* thienyl urea tetrahydroo77oxobenzo*b* thienyl urea and derivatives thereof |
| JPS5557448A (en) * | 1978-10-25 | 1980-04-28 | Yokohama Rubber Co Ltd:The | Tire-forming drum device |
-
1982
- 1982-01-14 JP JP57004690A patent/JPS58122845A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5239668A (en) * | 1975-09-25 | 1977-03-28 | American Cyanamid Co | Production of tetrahydrobenzo *b* thienyl urea tetrahydroo77oxobenzo*b* thienyl urea and derivatives thereof |
| JPS5557448A (en) * | 1978-10-25 | 1980-04-28 | Yokohama Rubber Co Ltd:The | Tire-forming drum device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61134234A (en) * | 1984-12-04 | 1986-06-21 | Mitsubishi Heavy Ind Ltd | Bladderless drum for radial tire molding |
| JPH0459134B2 (en) * | 1984-12-04 | 1992-09-21 | Mitsubishi Heavy Ind Ltd | |
| WO1992007707A1 (en) * | 1990-11-02 | 1992-05-14 | Sumitomo Rubber Industries, Ltd. | Green tire building apparatus |
| US5310328A (en) * | 1990-11-02 | 1994-05-10 | Sumitomo Rubber Industries, Ltd. | Green tire forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0133338B2 (en) | 1989-07-12 |
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