JPS6249179B2 - - Google Patents
Info
- Publication number
- JPS6249179B2 JPS6249179B2 JP55160114A JP16011480A JPS6249179B2 JP S6249179 B2 JPS6249179 B2 JP S6249179B2 JP 55160114 A JP55160114 A JP 55160114A JP 16011480 A JP16011480 A JP 16011480A JP S6249179 B2 JPS6249179 B2 JP S6249179B2
- Authority
- JP
- Japan
- Prior art keywords
- sidewall member
- tire
- molding machine
- folded
- stage molding
- 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
Links
- 238000000465 moulding Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 29
- 238000013459 approach Methods 0.000 claims 1
- 239000000470 constituent Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 6
- 238000002788 crimping Methods 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- -1 polyethylene Polymers 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000002079 cooperative effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000037303 wrinkles 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)
- B29D30/72—Side-walls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tyre Moulding (AREA)
Description
【発明の詳細な説明】
本発明はタイヤ成形方法に関し、さらに詳しく
は、ラジアルタイヤを成形する２段階成形法にお
いて、特にその第２段階の成形過程を改善したタ
イヤ成形方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tire molding method, and more particularly to a tire molding method that improves the second stage molding process in a two-step molding method for molding radial tires.
従来ラジアルタイヤを成形する２段階成形法に
おける第２段階の成形過程では、第１図ａ〜ｅに
示すように、第１段階の成形過程で成形されたシ
リンダー状の半製品グリーンタイヤＧをフランジ
Ｆに取り付け（第１図ａ参照）、これを圧縮空気
によりトロイダル状に膨張させて第１段階でカー
カス部材１上にポリエチレンシート２を介して貼
られたサイドウオール部材３のトレツド側を手作
業により左右に折り返した後（第１図ｂ参照）、
サイドウオール部材３とカーカス部材１との間に
貼られたポリエチレンシート２を剥離し、そのキ
ヤツプトレツド部にベルト及びトレツド構成部材
４を圧着する（第１図ｃ参照）。しかる後、前述
のように折り返してあるサイドウオール部材３を
左右から手作業により引き起こして第１図ｄ及び
ｅに示すようにグリーンタイヤの側面に貼り付
け、サイドウオールステツチヤーロール（図示し
ない）で圧着成形することによりダリーンタイヤ
Ｅが完成する。 In the second step of the two-step forming process for conventional radial tires, the cylindrical semi-finished green tire G formed in the first step is flanged, as shown in Fig. 1 a to e. F (see Figure 1 a), expand it into a toroidal shape with compressed air, and manually tread the tread side of the sidewall member 3 attached to the carcass member 1 via the polyethylene sheet 2 in the first step. After turning left and right (see Figure 1 b),
The polyethylene sheet 2 pasted between the sidewall member 3 and the carcass member 1 is peeled off, and the belt and tread component member 4 are crimped onto the cap tread portion thereof (see FIG. 1c). Thereafter, the sidewall member 3, which has been folded back as described above, is manually pulled up from the left and right sides and attached to the side surface of the green tire as shown in FIG. Daleen Tire E is completed by compression molding.
ところが従来は、上述のように折り返してある
サイドウオール部材３の引き起こし作業は、作業
者が両手により片側ずつ引き起こさなければなら
ない関係上、作業に長時間を要するばかりでなく
高度の熟練を要し、さらに引き起す際にサイドウ
オール部材３とカーカス部材１との間にエアーだ
まりができ易く、加えて手に付着した油等の異物
がサイドウオール内面やトレツド等の部材に付着
して、加硫後における故障発生率が高くなる等多
くの欠点があつた。 However, in the past, the work of raising the folded side wall member 3 as described above required the worker to raise one side at a time with both hands, which not only took a long time but also required a high level of skill. Furthermore, when vulcanizing, air pockets tend to form between the sidewall member 3 and the carcass member 1, and in addition, foreign matter such as oil on your hands may adhere to the inner surface of the sidewall, the tread, etc. There were many drawbacks, such as a high failure rate.
そこで最近上述した諸問題点を解消する方法と
して自動的にサイドウオール部材を引き起すべ
く、例えば、グリーンタイヤの周平面に対してト
レツド寄りに傾斜させた一対のターンナツプロー
ラにより、前述したサイドウオール部材の各折り
返し部を引き起しつつステツチヤーロールによつ
て圧着する方法（特開昭54−86578号公報参照）
や、成形ドラムの内外主軸の高速回転に基づく遠
心力と、サイドウオールステツチヤーロールとの
協働作用により、サイドウオール部材の各折り返
し部を引き起しつつステツチヤーロールによつて
圧着する方法（特開昭55−17507号公報参照）等
が提案されている。 Recently, as a method to solve the above-mentioned problems, in order to automatically raise the sidewall member, for example, a pair of turn nut rollers that are inclined toward the tread with respect to the circumferential plane of the green tire are used to automatically raise the sidewall member. A method of crimping each folded part of a member with a stitcher roll while pulling it up (see Japanese Patent Application Laid-Open No. 86578/1983)
Another method is to use the centrifugal force based on the high-speed rotation of the inner and outer main shafts of the forming drum and the cooperative action of the sidewall stitcher roll to raise each folded portion of the sidewall member while crimping it with the stitcher roll ( (see Japanese Patent Application Laid-Open No. 17507/1983), etc. have been proposed.
しかしながら、これらの方法は、いずれも回転
しているサイドウオール部材の折り返し部に、ロ
ールを接触させて引き起すようになつているた
め、引き起し工程中にサイドウオール部材にしわ
が発生したり、伸ばされたり、または部材が傷付
く等のトラブルが発生し易すく、さらに装置の調
整が著しく困難であるばかりでなく失敗率も極め
て高い等多くの問題点がある。 However, in all of these methods, the roll is brought into contact with the folded part of the rotating sidewall member to raise it, so wrinkles may occur in the sidewall member during the pulling process. There are many other problems, such as problems such as stretching or damage to the parts, and furthermore, not only is it extremely difficult to adjust the device, but the failure rate is also extremely high.
本発明の目的は、上述のような問題点を解消
し、前述したサイドウオール部材の折り返し部を
自動的に引き起すようにした優れたタイヤ成形方
法を提供せんとするものである。 SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide an excellent tire molding method that automatically raises the folded portion of the sidewall member.
上記目的を達成する本発明の特徴は、ラジアル
タイヤの２段階成形法における第２段階の成形過
程において、トロイダル状としたグリーンタイヤ
を超高速回転することにより、前述したサイドウ
オール部材の折り返し部を自動的に引き起すよう
にした点と、この引き起したサイドウオール部材
の上端部近く両側から圧縮空気を吹き付けること
により、このサイドウオール部材をタイヤ側面部
に自動的に貼り付けるようにした点にある。 A feature of the present invention that achieves the above object is that, in the second step of the two-step forming process of a radial tire, a toroidal-shaped green tire is rotated at an ultra-high speed to form the above-mentioned folded portion of the sidewall member. The sidewall member is automatically raised, and the sidewall member is automatically attached to the side wall of the tire by blowing compressed air from both sides near the upper end of the raised sidewall member. be.
以下本発明のタイヤ成形方法を実施例により図
面を参照しつつ詳細に説明する。 Hereinafter, the tire molding method of the present invention will be explained in detail by way of examples with reference to the drawings.
第２図は第１段階成形機で成形されたシリンダ
ー状の半製品グリーンタイヤの一部切欠した断面
図、第３図ａ〜ｅはそれぞれ本発明の第１実施例
による第２段階成形の各過程を示す説明図であ
る。 Fig. 2 is a partially cutaway cross-sectional view of a cylindrical semi-finished green tire formed by the first stage molding machine, and Figs. It is an explanatory diagram showing a process.
本発明の第１実施例に係るタイヤ成形方法は、
まず第２図に示すような第１段階の成形過程で成
形されたシリンダ状の半製品グリーンタイヤＧ
を、第３図ａに示すように、第２段階成形機Ｍの
フランジＦに取り付けて、左右の各フランジＦを
相互に寄せながら圧縮空気によりトロイダル状に
膨張すると共に、前記第１段階でカーカス部材１
上にポリエチレンシート２を介して貼られたサイ
ドウオール部材３のキヤツプトレツド側をそれぞ
れ手作業により左右に折り返した後前記ポリエチ
レンシート２を剥離する。 The tire molding method according to the first embodiment of the present invention includes:
First, a cylindrical semi-finished green tire G formed in the first stage forming process as shown in Figure 2.
is attached to the flange F of the second stage molding machine M as shown in FIG. Part 1
The cap lead side of the side wall member 3 pasted on top with the polyethylene sheet 2 interposed therebetween is manually folded back to the left and right, and then the polyethylene sheet 2 is peeled off.
この状態で、このトロイダル状のグリーンタイ
ヤの外周部所要位置にベルト及びトレツド構成部
材４を貼り付け、つづいて第３図ｂに示すよう
に、ステツチヤーロールSRをキヤツプトレツト
中央部ａから左右シヨルダー部a′にわたつて移動
して前記ベルト及びトレツド構成部材４をカーカ
ス部材１に密着せしめる。 In this state, the belt and tread component 4 are attached to the required positions on the outer periphery of this toroidal green tire, and then, as shown in FIG. a' to bring the belt and tread member 4 into close contact with the carcass member 1.
次に前記第２段階成形機Ｍの主軸Ａを550〜
600rpm（タイヤの種類サイズによつて変わる）
の超高速で回転し、この回転による遠心力の作用
のみによつて、前述したサイドウオール部材３の
折り返し部ｂを第３図ｃに示すようにトレツドの
シヨルダー側にそれぞれ自動的に引き起す。 Next, set the main axis A of the second stage molding machine M to 550~
600rpm (varies depending on tire type and size)
It rotates at an extremely high speed, and only by the action of the centrifugal force caused by this rotation, the above-mentioned folded portions b of the sidewall member 3 are automatically pulled up toward the shoulder side of the tread as shown in FIG. 3c.
そして各折り返し部ｂが完全に引き起こされた
後、ステツチヤーロールSRを第２図ｄで示す位
置から第２図ｅで示す位置まで移動して、サイド
ウオール部材３をタイヤ側面部に密着することに
よりグリーンタイヤＥの成形を完了するものであ
る。 After each folded portion b is completely raised, the stitcher roll SR is moved from the position shown in FIG. 2 d to the position shown in FIG. 2 e to bring the sidewall member 3 into close contact with the tire side surface. This completes the molding of the green tire E.
この際、前記ステツチヤーロールSRが、サイ
ドウオール部材３のシヨルダー側寄りに、少し移
動した時点で、主軸ａの回転数を例えば200rpm
（タイヤの種類、サイズによつて変わる）程度の
通常の回転数にダウンして、サイドウオール部材
の先端部が伸びるのを防止すると共にステツチヤ
ーの圧着効果より大きくして品質的な向上が得ら
れるようにすることが望ましい。 At this time, when the stitcher roll SR moves a little toward the shoulder side of the sidewall member 3, the rotation speed of the main shaft a is increased to, for example, 200 rpm.
The rotation speed is reduced to the normal rotation speed (depending on the type and size of the tire), which prevents the tip of the sidewall member from stretching, and improves quality by increasing the compression effect of the stitcher. It is desirable to do so.
これは超高速回転したままで引き起こされたサ
イドウオール部材をステツチヤーすると、サイド
ウオール部材の先端部が伸びてしまうばかりでな
く、十分なステツチヤーによる圧着効果が得られ
ないからであり、また最初から前述した通常の回
転数にダウンした状態でステツチヤーすると、超
高速回転で引き起されたサイドウオール部材の折
り返し部ｂが再び倒れてしまう恐れがあり、ステ
ツチヤーが困難になるからである。 This is because if you stitch a sidewall member that has been rotated at an extremely high speed, not only will the tip of the sidewall member stretch, but you will not be able to obtain a sufficient crimping effect with the stitcher. This is because if stitching is performed with the rotational speed reduced to the normal speed, there is a risk that the folded portion b of the sidewall member raised by the ultra-high speed rotation will fall down again, making stitching difficult.
つづいて第４図ａ〜ｆに示す本発明の第２実施
例に係るタイヤ成形方法を説明する。 Next, a tire forming method according to a second embodiment of the present invention shown in FIGS. 4a to 4f will be described.
本実施例も上述した第１実施例とほとんど同一
であるから、詳細な説明は省略するが、本実施例
においては、第４図ｃに示すように第２段階成形
機Ｍの主軸を第１実施例と同様に超高速回転し、
この回転による遠心力の作用のみによつて、前述
したサイドウオール部材３の折り返し部ｂをトレ
ツドのシヨルダー側にそれぞれ自動的に引き起し
た後、さらに第４図ｄに示すように、一対のノズ
ルＮから圧縮空気を、引き起こされたサイドウオ
ール部材３の先端近くに吹き付けることにより、
この引き起こされたサイドウオール部材を一層シ
ヨルダー側に接近せしめ得るようにしている。 Since this embodiment is almost the same as the first embodiment described above, a detailed explanation will be omitted, but in this embodiment, the main shaft of the second stage molding machine M is Similar to the example, it rotates at super high speed,
Only by the action of the centrifugal force caused by this rotation, the folded portions b of the sidewall member 3 described above are automatically pulled up toward the shoulder side of the tread, and then, as shown in FIG. 4d, a pair of nozzles By blowing compressed air from N near the tip of the raised sidewall member 3,
This raised sidewall member can be brought closer to the shoulder side.
そして上述したように各折り返し部ｂが完全に
引き起こされた後、前記主軸Ａの回転数を通常の
回転数にダウンすると、遠心力が弱まるため前述
のように内側（シヨルダー側）に傾いているサイ
ドウオール部材３自体の収縮等によつて、サイド
ウオール部材３は第４図ｅに示すように、タイヤ
側面部に自動的に貼り付き、ここで、ステツチヤ
ーロールSRを第４図ｅで示す位置から、第４図
ｆで示す位置まで移動することにより、サイドウ
オール部材３をタイヤ側面部に密着せしめ、グリ
ーンンタイヤＥの成形を完了するものである。 Then, after each folded portion b is completely raised as described above, when the rotational speed of the main shaft A is reduced to the normal rotational speed, the centrifugal force is weakened, so that the rotational force is tilted inward (toward the shoulder side) as described above. Due to contraction of the sidewall member 3 itself, the sidewall member 3 automatically sticks to the tire side surface as shown in FIG. 4e, and the stitcher roll SR is shown in FIG. 4e. By moving from this position to the position shown in FIG. 4f, the sidewall member 3 is brought into close contact with the side surface of the tire, and the molding of the green tire E is completed.
第５図は上述した第２実施例における主軸Ａの
回転数とノズルＮからサイドウオール部材３への
圧縮空気の吹き付け、及びステツチヤーロール
SRの第４図ｃより第４図ｆまでの過程に相当す
る動作の、タイムチヤートを示すものであり、t1
−t2は主軸超高速回転区間、t2−t4は圧縮空気吹
き付け区間、t3−t5は主軸高速回転区間、t4−t5は
ステツチヤーロールSRによるサイドウオール部
材３の圧着区間で、横軸は経過時間を示す。 FIG. 5 shows the rotational speed of the main shaft A, the blowing of compressed air from the nozzle N to the sidewall member 3, and the stitcher roll in the second embodiment described above.
This is a time chart of the operation corresponding to the process from Figure 4 c to Figure 4 f of SR, and t 1
-t 2 is the main shaft ultra-high speed rotation section, t 2 - t 4 is the compressed air blowing section, t 3 - t 5 is the main shaft high speed rotation section, and t 4 - t 5 is the crimping section of the side wall member 3 by stitcher roll SR. The horizontal axis shows the elapsed time.
t1−t2の区間でサイドウオール部材３の折り返
し部ｂが引き起こされ、t2−t4の区間ではサイド
ウオール部材３が圧縮空気の圧力と遠心力の低下
及びサイドウオール部材自体の収縮作用により、
タイヤ側面部に自動的に貼付く、すなわち圧縮空
気吹き付けの時間は主軸Ａの回転数が超高速→高
速に低下する数秒で充分である。 In the interval t 1 - t 2 , the folded part b of the sidewall member 3 is caused, and in the interval t 2 - t 4 , the sidewall member 3 is affected by the decrease in compressed air pressure and centrifugal force and the contraction of the sidewall member itself. According to
The time required to automatically attach the adhesive to the side surface of the tire, that is, to spray compressed air, is sufficient for a few seconds when the rotational speed of the main shaft A decreases from extremely high speed to high speed.
t4及びt5は各々ステツチヤーロールSRが第４図
ｅ及び第４図ｆで示す位置のタイミングを示す。 t 4 and t 5 indicate the timing of the stitcher roll SR in the positions shown in FIGS. 4e and 4f, respectively.
第６図ａは従来の成形方法、第６図ｂは本発明
の第２実施例に従う成形方法の場合のそれぞれの
主軸モーター（直流）の電機子電流の変化の様子
を示す実測データである。 FIG. 6a shows actual measurement data showing changes in the armature current of the main shaft motor (DC) in the case of the conventional molding method and FIG. 6b in the molding method according to the second embodiment of the present invention.
S1は第１段階成形機で成形された半製品グリー
ンタイヤをフランジＦに取り付けトロイダル状に
する段階、S2はサイドウオール部材３の１部を逆
転寸動により折り返す段階、S3はポリエチレンシ
ート２を正転１回転ではがす段階、S4はベルト及
びトレツド構成部材４を貼り付ける段階、S5はベ
ルト及びトレツド構成部材４をステツチヤーロー
ルSRで圧着する段階、S6はサイドウオール部材
折り返し部ｂを片側づつ逆転寸動で手作業により
引き起こしてタイヤ側面部に貼り付ける段階、S7
はサイドウオール部材３をステツチヤーロール
SRで圧着する段階、S8は空気を抜き完成グリー
ンをフランジＦから取りはずす段階、S9はサイド
ウオール部材の折り返し部ｂを超高速回転による
遠心力で引き起こす段階、S10はサイドウオール
部材３に圧縮空気を吹き付けタイヤ側面部に貼り
付ける段階で超高速回転から高速回転に減速する
段階である。 S 1 is the step of attaching the semi-finished green tire molded by the first stage molding machine to the flange F to make it into a toroidal shape, S 2 is the step of folding back a part of the sidewall member 3 by reverse inching, and S 3 is the step of folding the polyethylene sheet S4 is the step of pasting the belt and tread component 4. S5 is the step of crimping the belt and tread component 4 with stitcher roll SR. S6 is the step of folding back the side wall member. Step of manually raising part b one side at a time with reverse inching and attaching it to the side surface of the tire, S7
Stitcher roll sidewall member 3.
Step of crimping with SR, S8 is a step of removing air and removing the completed green from flange F, S9 is a step of causing the folded part b of the sidewall member by centrifugal force due to ultra-high speed rotation, and S10 is a step of attaching it to the sidewall member 3. This is the stage where compressed air is blown onto the side surface of the tire, and the speed is decelerated from ultra-high speed to high speed.
第６図ａ及びｂを比較すると明らかなように、
S6で示す従来の手作業による煩雑で高度の熟練を
要するサイドウオール部材の折り返し部ｂの引き
起し作業を、本発明によれば、S9で示すように自
動的に極めて容易に行なうことができて、生産性
を著しく向上することができるのは勿論、品質を
も向上、均一化することができる。 As is clear from comparing Figure 6 a and b,
According to the present invention, the conventional manual work of raising the folded portion b, which is complicated and requires a high degree of skill, as shown in S 6 , can be performed automatically and extremely easily as shown in S 9 . Not only can productivity be significantly improved, but also quality can be improved and made uniform.
本発明は上述のように構成したから、タイヤの
第２段階成形におけるサイドウオール部材折り返
し部の引き起こし作業を自動的に行なうことがで
き、従来の方法では作業者が両手で片側づつサイ
ドウオール部材を引き起こす為かなり時間がかか
るばかりでなく、サイドウオール部材とカーカス
部材との間にエアーだまりが生じ易すく、また手
に付着した油等の異物が作業中にサイドウオール
やトレツド等の材料に付着して加硫後の故障発生
率が高く、さらに、サイドウオール部材が均一に
貼れない、等の欠点を解消することができる。従
つて本発明は、成形時間を従来の方法と比較し
て、約20％程度短縮でき、さらに加硫後の故障発
生率も従来の方法の1/50程度に減少せしめること
ができ、その上サイドウオール部の均一性向上に
よりタイヤの性能が著しく向上する等その効果は
極めて大きい。 Since the present invention is configured as described above, it is possible to automatically perform the work of raising the folded portion of the sidewall member in the second stage of tire molding. Not only does it take a considerable amount of time to do this, but it also tends to cause air pockets to form between the sidewall and carcass members, and foreign matter such as oil on your hands can stick to the sidewalls, treads, and other materials during work. It is possible to eliminate drawbacks such as a high failure rate after vulcanization and the inability to apply the sidewall member uniformly. Therefore, the present invention can shorten the molding time by about 20% compared to the conventional method, and further reduce the failure rate after vulcanization to about 1/50 of the conventional method. The effects are extremely large, such as the performance of the tire being significantly improved by improving the uniformity of the sidewall portion.
第１図ａ〜ｅは従来の２段階成形法における第
２段階の成形過程を示す説明図、第２図は第１段
階成形機で成形されたシリンダー状の半製品グリ
ーンタイヤの一部切欠した断面図、第３図ａ〜ｅ
はそれぞれ本発明の第１実施例による第２段階成
形の各過程を示す説明図、第４図ａ〜ｆはそれぞ
れ本発明の第２実施例による第２段階成形の各過
程を示す説明図、第５図は第２実施例におけるタ
イムチヤートを示す図、第６図ａは従来の第２段
階成形の各成形過程における作業時間を示す図、
第６図ｂは本発明第２実施例の第２段階成形の各
成形過程における作業時間を示す図である。
１……カーカス部材、２……ポリエチレンシー
ト、３……サイドウオール部材、４……ベルト及
びトレツド構成部材。
Figures 1 a to e are explanatory diagrams showing the second-stage molding process in the conventional two-stage molding method, and Figure 2 is a partially cutaway diagram of a cylindrical semi-finished green tire formed by the first-stage molding machine. Cross-sectional view, Figure 3 a-e
4A to 4F are explanatory diagrams showing each process of the second stage molding according to the first embodiment of the present invention, respectively, and FIGS. FIG. 5 is a diagram showing a time chart in the second embodiment, FIG. 6a is a diagram showing the working time in each molding process of the conventional second stage molding,
FIG. 6b is a diagram showing the working time in each molding process of the second stage molding according to the second embodiment of the present invention. 1...Carcass member, 2...Polyethylene sheet, 3...Side wall member, 4...Belt and tread component member.
Claims (1)
半製品グリーンタイヤを、第２段階成形機に取り
付けてトロイダル状とし、あらかじめ前記第１段
階成形機で貼られているサイドウオール部材の一
部を折り返してベルト及びトレツド構成部材を接
着した後、前記折り返してあるサイドウオール部
材を引き起してタイヤ側面に圧着するタイヤ成形
方法において、前記折り返してあるサイドウオー
ル部材の該折り返し部を、遠心力のみによつて自
動的に引き起すことを特徴とするタイヤ成形方
法。 ２ 第１段階成形機で成形されたシリンダー状の
半製品グリーンタイヤを、第２段階成形機に取り
付けてトロイダル状とし、あらかじめ前記第１段
階成形機で貼られているサイドウオール部材の一
部を折り返してベルト及びトレツド構成部材を接
着した後、前記折り返してあるサイドウオール部
材を引き起してタイヤ側面に圧着するタイヤ成形
方法において、前記折り返してあるサイドウオー
ル部材の該折り返し部を、遠心力のみによつて自
動的に引き起した後、該引き起こされたサイドウ
オール部材の先端部近くに外側から圧縮空気を吹
き付けて該引き起こされたサイドウオール部材を
シヨルダー側に接近せしめることを特徴としたタ
イヤ成形方法。[Scope of Claims] 1. A cylindrical semi-finished green tire molded by the first stage molding machine is attached to a second stage molding machine to form a toroidal shape, and the side surface previously pasted by the first stage molding machine is attached to the second stage molding machine. In a tire forming method in which a part of the wall member is folded back and a belt and a tread component are bonded to each other, the folded sidewall member is pulled up and pressed to a side surface of the tire. A tire forming method characterized by automatically raising a portion of the tire using only centrifugal force. 2 The cylindrical semi-finished green tire molded by the first stage molding machine is attached to the second stage molding machine to make it into a toroidal shape, and a part of the sidewall member previously pasted by the first stage molding machine is removed. In a tire forming method in which the folded sidewall member is folded back and the belt and tread constituent members are bonded together, the folded sidewall member is pulled up and pressed against the tire side surface, the folded portion of the folded sidewall member is subjected to centrifugal force alone. Tire molding characterized in that after the sidewall member is automatically raised by the sidewall member, compressed air is blown from the outside near the tip of the sidewall member that has been raised so that the sidewall member that has been raised approaches the shoulder side. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55160114A JPS5784835A (en) | 1980-11-15 | 1980-11-15 | Tire forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55160114A JPS5784835A (en) | 1980-11-15 | 1980-11-15 | Tire forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5784835A JPS5784835A (en) | 1982-05-27 |
| JPS6249179B2 true JPS6249179B2 (en) | 1987-10-17 |
Family
ID=15708154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55160114A Granted JPS5784835A (en) | 1980-11-15 | 1980-11-15 | Tire forming method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5784835A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01130921A (en) * | 1987-11-17 | 1989-05-23 | Bridgestone Corp | Manufacture of pneumatic tire |
| FR2706806A1 (en) * | 1993-06-25 | 1994-12-30 | Michelin & Cie | |
| JP7109740B2 (en) * | 2018-07-09 | 2022-08-01 | 住友ゴム工業株式会社 | Raw tire molding method and stitching device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52108469A (en) * | 1976-03-05 | 1977-09-10 | Pirelli | Method and apparatus for folding and assembling side walls and another halffmade tire on circular body of tire |
| JPS5538263A (en) * | 1978-09-04 | 1980-03-17 | Mitsubishi Heavy Ind Ltd | Molding device of small box |
-
1980
- 1980-11-15 JP JP55160114A patent/JPS5784835A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52108469A (en) * | 1976-03-05 | 1977-09-10 | Pirelli | Method and apparatus for folding and assembling side walls and another halffmade tire on circular body of tire |
| JPS5538263A (en) * | 1978-09-04 | 1980-03-17 | Mitsubishi Heavy Ind Ltd | Molding device of small box |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5784835A (en) | 1982-05-27 |
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