JP2805513B2 - Tire-constituting strip-like material sticking method and device - Google Patents
Tire-constituting strip-like material sticking method and deviceInfo
- Publication number
- JP2805513B2 JP2805513B2 JP1329594A JP32959489A JP2805513B2 JP 2805513 B2 JP2805513 B2 JP 2805513B2 JP 1329594 A JP1329594 A JP 1329594A JP 32959489 A JP32959489 A JP 32959489A JP 2805513 B2 JP2805513 B2 JP 2805513B2
- Authority
- JP
- Japan
- Prior art keywords
- shaped material
- belt
- forming drum
- tire
- tire forming
- 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 - Fee Related
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
- B29D30/28—Rolling-down or pressing-down the layers in the building process
-
- 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)
- B29D30/38—Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
- B29D30/44—Stretching or treating the layers before application on the drum
- B29D2030/4437—Adjusting the dimensions of the layers
-
- 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)
- B29D30/38—Textile inserts, e.g. cord or canvas layers, for tyres; Treatment of inserts prior to building the tyre
- B29D30/44—Stretching or treating the layers before application on the drum
- B29D2030/4437—Adjusting the dimensions of the layers
- B29D2030/445—Shortening the layers, e.g. by acting on the lateral edges or on the thickness or by cutting
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、タイヤ構成帯状材料の貼付け方法及びそ
の装置に係わり、更に詳しくはタイヤトレッド等のタイ
ヤ構成材料を、タイヤ成形ドラムに貼付ける際、タイヤ
構成材料を均一に延ばしながら端末部を精度良く貼付け
ることが出来るタイヤ構成帯状材料の貼付け方法及びそ
の装置に関するものである。Description: TECHNICAL FIELD The present invention relates to a method and an apparatus for attaching a tire-constituting belt-shaped material, and more particularly, to a method for attaching a tire-constituting material such as a tire tread to a tire forming drum. The present invention relates to a method and an apparatus for attaching a belt-shaped material for a tire capable of accurately attaching a terminal portion while uniformly spreading the material for a tire.
従来、タイヤトレッド等のタイヤ構成帯状材料をタイ
ヤ成形ドラムに貼付ける際、定尺切断された帯状材料の
変形を起こさないようにしてドラムに巻付るとと、帯状
材料の始端部と終端部との接合部間にＶ字状の溝ができ
てしまう。Conventionally, when a band material for a tire such as a tire tread is applied to a tire forming drum, the band material is cut around the drum so as not to cause deformation of the band material cut to a fixed length. A V-shaped groove is formed between the joining portions.
このため、従来では第６図に示すように、タイヤ成形
ドラム１と帯状材料Ｗとの接点Ｑより手前側でハンマー
ロール２を用いて帯状材料Ｗをしごきながら全長を延ば
して巻付けを行っていた。For this reason, conventionally, as shown in FIG. 6, the entire length of the belt-shaped material W is extended while being squeezed with the use of the hammer roll 2 on the front side of the contact point Q between the tire forming drum 1 and the belt-shaped material W, and then wound. Was.
ところで、帯状材料Ｗの変更等で帯状材料Ｗの延ばし
量Ｓを変える場合には、ハンマーロール２の押圧力Ｆを
変えて行う必要があるが、帯状材料Ｗのタイヤ成形ドラ
ム１側に接触する面Waと外側の面Wbとは必ずしも適正な
伸び率とならず、従ってこのような方法によりタイヤ成
形ドラム１に巻付けた場合には、第７図に示すように帯
状材料Ｗの始端部Wxと終端部Wyとの間にやはりＶ字状の
溝３ができてしまい、精度の高い突き合わせ接合を行う
ことが出来ないと言う問題があった。By the way, when the extension amount S of the strip material W is changed by changing the strip material W or the like, it is necessary to change the pressing force F of the hammer roll 2, but the strip material W comes into contact with the tire forming drum 1 side. The surface Wa and the outer surface Wb do not always have an appropriate elongation ratio. Therefore, when the surface Wa is wound around the tire forming drum 1 by such a method, as shown in FIG. A V-shaped groove 3 is also formed between the end portion Wy and the end portion Wy, and there is a problem that it is not possible to perform high-precision butt joining.
この発明は、かかる従来の課題に着目して案出された
もので、帯状材料の上面側の伸び率を下面側の伸び率に
比較して大きくするようにし、帯状材料全体の伸び率を
略均一化させて帯状材料の始端部と終端部との端末接合
部を精度良く突き合わせ接合が出来るようにしたタイヤ
構成帯状材料の貼付け方法及びその装置を提供すること
を目的とするものである。The present invention has been devised in view of such a conventional problem, and the elongation rate of the upper surface side of the belt-shaped material is set to be larger than that of the lower surface side, so that the elongation rate of the entire belt-shaped material is substantially reduced. An object of the present invention is to provide a method and an apparatus for attaching a tire-constituting strip-shaped material, which can be made uniform so that a terminal joint portion between a start end portion and a terminal end portion of the strip-shaped material can be accurately butted and joined.
この発明は上記目的を達成するため、定尺切断された
帯状材料を貼付けるタイヤ成形ドラムの上部接線方向の
接点近傍上方に、前記タイヤ成形ドラムの接点部に対し
て昇降し、かつ所定の重量を有する回転自在な摺接ロー
ルを設置し、前記摺接ロールの軸部に、回転時に所定の
ブレーキをかけるブレーキ機構を設けたことを要旨とす
るものである。In order to achieve the above object, the present invention raises and lowers a predetermined weight with respect to a contact portion of the tire forming drum above and near a contact point in an upper tangential direction of a tire forming drum on which a fixed-length band-shaped material is to be attached. The invention is characterized in that a rotatable sliding contact roll having: is provided, and a brake mechanism for applying a predetermined brake during rotation is provided on a shaft portion of the sliding contact roll.
この発明は上記のように構成され、タイヤ成形ドラム
に、定尺切断された所定の肉厚の帯状材料を貼付ける
際、前記タイヤ成形ドラムの接線方向の接点近傍から帯
状材料の表面に、ブレーキを備え、かつ所定の荷重をか
けた回転自在な摺接ロールを接触させ、前記タイヤ成形
ドラムを回転駆動により帯状材料を貼付ける際、前記摺
接ロールの表面と帯状材料との摩擦力によりタイヤ成形
ドラムの回転方向に対して摺接ロールに逆方向のトルク
を発生させて帯状材料の表面側を巻戻し方向に附勢する
ことにより帯状材料の全長を均一に延ばし、かつまた帯
状材料の上面側の伸び率を下面側の伸び率に比較して大
きくするようにし、帯状材料全体の伸び率を略均一化さ
せて帯状材料の始端部と終端部との端末接合部を精度良
く貼付けることが出来るようにしたものである。The present invention is configured as described above, and when attaching a band-shaped material having a predetermined thickness cut to a fixed size to a tire forming drum, a brake is applied to a surface of the band-shaped material from near a contact point in a tangential direction of the tire forming drum. And when a predetermined load is applied to a rotatable sliding contact roll to apply a belt-shaped material by rotating the tire forming drum, a tire is formed by a frictional force between the surface of the sliding contact roll and the belt-shaped material. By generating a torque in the opposite direction to the sliding contact roll with respect to the rotating direction of the forming drum to urge the surface side of the strip material in the rewinding direction, the entire length of the strip material is evenly extended, and also the upper surface of the strip material Make the elongation percentage on the side larger than the elongation percentage on the lower surface side, make the elongation percentage of the entire band-like material substantially uniform, and paste the terminal joint between the start end and the end of the band-like material with high accuracy Made It is obtained by way.
以下、添付図面に基づき、この発明の実施例を説明す
る。Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
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。The same components as those of the conventional example are denoted by the same reference numerals, and description thereof will be omitted.
第１図は、この発明の実施したトレッド等のタイヤ構
成帯状材料の貼付け装置の平面図、第２図は第１図の側
面図を示し、定尺切断された帯状材料Ｗを貼付けるタイ
ヤ成形ドラム１の上部接線方向ＸーＸの接点Ｑの近傍上
方に、前記タイヤ成形ドラム１の接点部に対して昇降
し、かつ所定の重量を有する回転自在な摺接ロール10を
備えた貼付け装置が設置してある。FIG. 1 is a plan view of a device for attaching a belt-shaped material such as a tread according to the present invention, and FIG. 2 is a side view of FIG. Above the vicinity of the contact point Q in the upper tangential direction XX of the drum 1, there is provided a sticking device provided with a rotatable sliding contact roll 10 having a predetermined weight, which is movable up and down with respect to the contact portion of the tire forming drum 1. Has been installed.
前記摺接ロール10は、鉄芯の周面を合成樹脂でコーテ
イングしてあり、また表面は帯状材料Ｗとの摩擦を生じ
させる為にローレット加工等を施してある。The sliding roller 10 has a steel core coated on its peripheral surface with a synthetic resin, and its surface is subjected to knurling or the like to generate friction with the belt-shaped material W.
この摺接ロール10の中心部には、シャフト11が挿通さ
れ、シャフト11と摺接ロール10とはキー12を介して固定
されている。A shaft 11 is inserted through the center of the sliding roller 10, and the shaft 11 and the sliding roller 10 are fixed via a key 12.
前記シャフト11の両端部は、軸受13a,13bを介してバ
ー14に吊設されたホルダー15a,15bに回転自在に支持さ
れ、またホルダー15a,15bが突出したシャフト11の両端
末部には、シャフト11にトルク可変の電磁ブレーキ等の
ブレーキ機構16a,16bがキー17を介して固定されてい
る。Both ends of the shaft 11 are rotatably supported by holders 15a, 15b suspended from the bar 14 via bearings 13a, 13b, and at both ends of the shaft 11 from which the holders 15a, 15b protrude, Brake mechanisms 16 a and 16 b such as electromagnetic brakes with variable torque are fixed to the shaft 11 via a key 17.
前記、バー14の両端は、第２図に示すような２本の平
行なアーム18a,18bの先端に支持され、このアーム18a,1
8bの基端部は、旋回中心となるピン19に固定されてい
る。このピン19の両端は、ブッシュ20を介してリンク21
の一端に連結され、リンク21の他端側は、ピン23を介し
てエアーシリンダー24のロッド25の先端に設けたクレビ
ス26に連結されている。Both ends of the bar 14 are supported by the tips of two parallel arms 18a and 18b as shown in FIG.
The base end of 8b is fixed to a pin 19 serving as a turning center. Both ends of this pin 19 are connected to a link 21 via a bush 20.
The other end of the link 21 is connected via a pin 23 to a clevis 26 provided at the tip of a rod 25 of an air cylinder 24.
次に、タイヤ構成帯状材料Ｗの貼付け方法について説
明すると、タイヤ成形ドラム１に、定尺切断された所定
の板厚ｔの帯状材料Ｗを始端部Wx側から貼付ける際、前
記タイヤ成形ドラム１の接線方向の接点Ｑの近傍から帯
状材料Ｗの表面に、所定の荷重ｆをかけた回転自在な摺
接ロール10を接触させる。Next, a method of attaching the tire forming belt-shaped material W will be described. When the belt-shaped material W having a predetermined thickness t cut to a fixed size is attached to the tire forming drum 1 from the starting end Wx side, the tire forming drum 1 is attached. A rotatable sliding contact roll 10 with a predetermined load f is brought into contact with the surface of the band-shaped material W from the vicinity of the contact Q in the tangential direction.
摺接ロール10の荷重ｆとしては、帯状材料Ｗの板厚ｔ
にもよるが、摺接ロール10の自重またはエアーシリンダ
24の圧着力によって行い、一般には摺接ロール10の自重
によるものである。The load f of the sliding roll 10 is the thickness t of the strip material W.
Depending on the weight of the sliding roll 10, or the air cylinder
24, and is generally based on the weight of the sliding roller 10.
このような状態から、前記タイヤ成形ドラム１の回転
駆動により帯状材料Ｗを始端部Wx側から貼付けると、前
記摺接ロール10の表面と帯状材料Ｗの表面との摩擦力に
より、タイヤ成形ドラム１の回転方向に対して摺接ロー
ル10が一定のトルクＴを発生し、帯状材料Ｗの表面側Wb
を巻戻し方向（第３図に於いて右方向）に附勢する。From such a state, when the belt-shaped material W is adhered from the starting end Wx side by the rotation drive of the tire forming drum 1, the frictional force between the surface of the sliding contact roll 10 and the surface of the belt-shaped material W causes The sliding contact roll 10 generates a constant torque T in one rotation direction, and the surface side Wb of the strip material W
In the rewind direction (rightward in FIG. 3).
この時の帯状材料Ｗの表面側Wbと、タイヤ成形ドラム
１側の面Waとの剪断力τは、帯状材料Ｗの板厚ｔとした
場合、第４図（ａ）の状態となるものである。即ち、帯
状材料Ｗのタイヤ成形ドラム１側の面Waは、ドラム表面
との密着により、ドラムの回転方向（第３図において反
時計方向）に引っ張られるが、帯状材料Ｗの表面側Wb
は、摺接ロール10が一定の荷重ｆにより接触し、しかも
ブレーキ機構16a,16bのブレーキ力により巻戻し方向に
引っ張られることとなり、従って帯状材料Ｗのタイヤ成
形ドラム１側の面Waの伸び率に比較して、表面側Wbの伸
び率が大きくなる。At this time, the shearing force τ between the surface side Wb of the band-shaped material W and the surface Wa on the tire forming drum 1 side is as shown in FIG. is there. That is, the surface Wa of the belt-shaped material W on the tire forming drum 1 side is pulled in the rotating direction of the drum (counterclockwise in FIG. 3) due to the close contact with the drum surface.
Means that the sliding roller 10 comes into contact with a constant load f and is pulled in the rewinding direction by the braking force of the brake mechanisms 16a and 16b. Therefore, the elongation rate of the belt-shaped material W on the surface Wa on the tire forming drum 1 side is increased. , The elongation percentage of the front side Wb is increased.
この結果、帯状材料Ｗの全長ｌは、略均一な厚さで延
ばされることになり、しかも第４図（ｂ）に示すように
始端部Wxと終端部Wyとの突き合わせ接合部30には間隙が
生じることなく精度の高い接合が出来るものである。As a result, the entire length 1 of the strip-shaped material W is extended with a substantially uniform thickness, and furthermore, as shown in FIG. 4 (b), a gap is formed in the butt joint 30 between the start end Wx and the end end Wy. A high-precision bonding can be performed without occurrence of cracks.
第５図は、同一長さｌの帯状材料Ｗを使用し、ハンマ
ーロール２を用いて引き延ばして貼付けた従来例と、こ
の発明による摺接ロール10を用いて引き延ばして貼付け
た実施例とを比較したグラフであり、従来例の場合に
は、貼始めが最も良く帯状材料Ｗが延び、貼終わりでは
殆ど延びないのに比較し、この実施例では、貼始めから
貼終わりまで、帯状材料Ｗの延びの変化がわずかである
ことが判る。これにより、均一な貼付けるを行うことが
出来ると共に、端末部の突き合わせ接合部を精度良く貼
付けが出来るのである。FIG. 5 shows a comparison between a conventional example in which a strip-shaped material W having the same length 1 is used and stretched using a hammer roll 2 and an example in which the strip material W is stretched and bonded using a sliding roller 10 according to the present invention. In the case of the conventional example, in comparison with the conventional example, the band-shaped material W extends best at the beginning of the application and hardly extends at the end of the application. It can be seen that the change in elongation is slight. As a result, uniform bonding can be performed, and the butt joint of the terminal portion can be accurately bonded.
この発明は、上記のような構成であるので、帯状材料
の上面側の伸び率を下面側の伸び率に比較して大きくす
るようにし、帯状材料全体の伸び率を略均一化させて帯
状材料の始端部と終端部との端末接合部を、自動的にし
かも精度良く突き合わせ接合が出来る効果がある。Since the present invention is configured as described above, the elongation rate on the upper surface side of the strip material is set to be larger than the elongation rate on the lower surface side, and the elongation rate of the entire strip material is made substantially uniform. There is an effect that the terminal joint portion between the start end portion and the end portion can be automatically and accurately butted and joined.
第１図は、この発明を実施したトレッド等のタイヤ構成
帯状材料の貼付け装置の平面図、第２図は第１図の側面
図、第３図は帯状材料の貼付け方法を示す説明図、第４
図（ａ）は帯状材料のドラム側の面と表面側の面との剪
断力を示す説明図、第４図（ｂ）はこの発明による帯状
材料をタイヤ成形ドラムに貼付けた状態を示す側面図、
第５図は従来の貼付け方法と、この発明の実施例による
貼付け方法の帯状材料の伸び率を比較したグラフ説明
図、第６図は従来の帯状材料の貼付け方法を示す説明
図、第７図は従来の帯状材料をタイヤ成形ドラムに貼付
けた状態を示す側面図である。 １……タイヤ成形ドラム、10……摺接ロール、11……シ
ャフト、16a,16b……ブレーキ機構、Ｗ……帯状材料、W
a……帯状材料のドラム側面、Wb……帯状材料の表面側
の面、Wx……帯状材料の始端部、Wy……帯状材料の終端
部、Ｑ……接点。FIG. 1 is a plan view of an apparatus for attaching a belt-shaped material such as a tread embodying the present invention, FIG. 2 is a side view of FIG. 1, FIG. 4
FIG. 4 (a) is an explanatory view showing the shearing force between the drum-side surface and the surface-side surface of the belt-shaped material, and FIG. 4 (b) is a side view showing a state in which the belt-shaped material according to the present invention is attached to a tire building drum. ,
FIG. 5 is a graph explanatory diagram comparing the elongation percentage of the strip material between the conventional laminating method and the laminating method according to the embodiment of the present invention. FIG. 6 is an explanatory diagram showing the conventional laminating method of the belt material. FIG. 2 is a side view showing a state where a conventional belt-shaped material is attached to a tire building drum. 1 ... tire forming drum, 10 ... sliding contact roll, 11 ... shaft, 16a, 16b ... brake mechanism, W ... strip material, W
a: side surface of the drum of the band-shaped material, Wb: surface on the front side of the band-shaped material, Wx: start end of the band-shaped material, Wy: end portion of the band-shaped material, Q: contact point.
Claims (2)
の肉厚の帯状材料を貼付ける際、前記タイヤ成形ドラム
の接線方向の接点近傍から帯状材料の表面に、ブレーキ
を備え、かつ所定の荷重をかけた回転自在な摺接ロール
を接触させ、前記タイヤ成形ドラムの回転駆動により帯
状材料を貼付ける際、前記摺接ロールの表面と帯状材料
との摩擦力によりタイヤ成形ドラムの回転方向に対して
摺接ロールに逆方向のトルクを発生させて帯状材料の表
面側を巻戻し方向に附勢することより帯状材料の全長を
均一に延ばすことを特徴とするタイヤ構成帯状材料の貼
付け方法。When a predetermined thickness of a band-shaped material cut to a fixed length is stuck to a tire forming drum, a brake is provided on a surface of the band-shaped material from near a contact point in a tangential direction of the tire forming drum, and a brake is provided. When the belt-shaped material is applied by rotating the tire forming drum by rotating the sliding contact roll with a load applied thereto, the rotational direction of the tire forming drum is determined by the frictional force between the surface of the sliding contact roll and the band-shaped material. Characterized in that a torque in a reverse direction is generated by a sliding roller against the belt to urge the surface side of the belt-shaped material in a rewinding direction, thereby uniformly extending the entire length of the belt-shaped material. .
成形ドラムの上部接線方向の接点近傍上方に、前記タイ
ヤ成形ドラムの接点部に対して昇降し、かつ所定の重量
を有する回転自在な摺接ロールを設置し、前記摺接ロー
ルの軸部に、回転時に所定のブレーキをかけるブレーキ
機構を設けたことを特徴とするタイヤ構成帯状材料の貼
付け装置。2. A rotatable lifting and lowering member having a predetermined weight, which is raised and lowered relative to a contact portion of the tire forming drum above and near a contact in an upper tangential direction of an upper portion of the tire forming drum on which the strip-shaped material cut to a fixed length is to be attached. A device for attaching a belt-shaped material for a tire, wherein a sliding roller is provided, and a brake mechanism for applying a predetermined brake during rotation is provided on a shaft portion of the sliding roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1329594A JP2805513B2 (en) | 1989-12-21 | 1989-12-21 | Tire-constituting strip-like material sticking method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1329594A JP2805513B2 (en) | 1989-12-21 | 1989-12-21 | Tire-constituting strip-like material sticking method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03190726A JPH03190726A (en) | 1991-08-20 |
| JP2805513B2 true JP2805513B2 (en) | 1998-09-30 |
Family
ID=18223095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1329594A Expired - Fee Related JP2805513B2 (en) | 1989-12-21 | 1989-12-21 | Tire-constituting strip-like material sticking method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2805513B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106132680A (en) * | 2013-12-13 | 2016-11-16 | 倍耐力轮胎股份公司 | The method and apparatus that tire strip-like resilient body member is put on formation support |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013100562A1 (en) * | 2013-01-21 | 2014-07-24 | Continental Reifen Deutschland Gmbh | Method for producing vehicle tires with a tire building drum |
| JP6529235B2 (en) * | 2014-09-22 | 2019-06-12 | 住友ゴム工業株式会社 | Tire molding presser and tire molding method |
-
1989
- 1989-12-21 JP JP1329594A patent/JP2805513B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106132680A (en) * | 2013-12-13 | 2016-11-16 | 倍耐力轮胎股份公司 | The method and apparatus that tire strip-like resilient body member is put on formation support |
| CN106132680B (en) * | 2013-12-13 | 2018-08-10 | 倍耐力轮胎股份公司 | The method and apparatus that tire is applied to formation support with strip-like resilient volume elements part |
| US11433631B2 (en) | 2013-12-13 | 2022-09-06 | Pirelli Tyre S.P.A. | Method for depositing a piece of band-like elastomeric element on a forming support in a process for building a tyre for vehicle wheels |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03190726A (en) | 1991-08-20 |
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