JP4415452B2 - Manufacturing method of tire component - Google Patents

Manufacturing method of tire component Download PDF

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Publication number
JP4415452B2
JP4415452B2 JP2000149290A JP2000149290A JP4415452B2 JP 4415452 B2 JP4415452 B2 JP 4415452B2 JP 2000149290 A JP2000149290 A JP 2000149290A JP 2000149290 A JP2000149290 A JP 2000149290A JP 4415452 B2 JP4415452 B2 JP 4415452B2
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JP
Japan
Prior art keywords
sheet
length
sheet material
tire
drum
Prior art date
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Expired - Fee Related
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JP2000149290A
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Japanese (ja)
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JP2001328180A (en
Inventor
信雄 長谷川
利夫 田中
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Yokohama Rubber Co Ltd
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Yokohama Rubber Co Ltd
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Priority to JP2000149290A priority Critical patent/JP4415452B2/en
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    • 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
    • B29D30/30—Applying the layers; Guiding or stretching the layers during application
    • B29D30/3007—Applying the layers; Guiding or stretching the layers during application by feeding a sheet perpendicular to the drum axis and joining the ends to form an annular element

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)

Description

【０００１】
【発明の属する技術分野】
この発明は、インナーライナー等のタイヤ構成部材の製造方法にかかわり、更に詳しくはシート状に成形したシート材料の幅方向両端部を段差の無い状態で貼合わせることを可能としたタイヤ構成部材の製造方法に関するものである。
【０００２】
【従来の技術】
従来、二本、または複数本のカレンダーによりタイヤ構成材料として使用するインナーライナー等のシート材料を成形する際、その圧延時に、タイヤ仕様幅でトリムカットし、そして長尺に巻取った後、シート材料をタイヤ成形機において所要長さ（例えば、ドラム周長に対応した長さ）に切断して使用している。
【０００３】
【発明が解決しようとする課題】
ところで、シート材料の貼合わせ端末部を品質向上や外観等を向上させる目的から斜めに切断する方法が行われているが、その切断端面の角度には限界があり、従って、端末部の突き合わせた状態、または重ね合わせた状態で貼合わせた際に接合強度が不足したり、段差が出来たりして外観不良等の問題が生じていた。
【０００４】
そこで、シート材料の端末部を所定幅重ねて貼付ける、所謂ラップスプライス方式が採用されているが、接合部の外観や、性能上に問題があった。
【０００５】
この発明の目的は、シート材料の成形工程で、幅方向両端部を一定の傾斜角度のテーパ部を備え、かつ成形ドラムのドラム周長に対応させた幅でシート材料を成形することで、所定の長さに切断したシート材料を貼合わせる際、段差の無い状態で貼合わせが可能となり、タイヤの品質並びにタイヤの外観を向上させることが出来るタイヤ構成部材の製造方法を提供することにある。
【０００６】
【課題を解決するための手段】
上記目的を達成するための第１の発明は、ゴム状弾性体からなるシート状材料Ｗを押出す押出機（１）の押出しヘッド（２）に、互いに接圧する二本の圧延ロール（５ａ、５ｂ）を有し、かつ一方の圧延ロール（５ａ）の表面にプロファイル形状に対応する溝（４）を設けるように構成したプロファイル付き圧延手段（３）を対設し、このプロファイル付き圧延手段（３）により、軸方向両端部に一定の傾斜角度のテーパ部（６ａ、６ｂ）を備え、かつ成形ドラムのドラム周長に対応させた幅Ｈを有するシート状材料Ｗを成形し、該シート状材料Ｗを長手方向に所定の長さＬに切断してシート状材料Ｗａを形成し、このシート状材料Ｗａの幅方向両端部のテーパ部（６ａ、６ｂ）同士を貼合わせて段差の無いタイヤ構成部材を製造することを要旨とするものである。
また、上記目的を達成するための第２の発明は、ゴム状弾性体からなるシート状材料Ｗを押出す押出機（１）の押出しヘッド（２）に、該押出しヘッド（２）の吐出部に片側のみのロール（５ｃ）を対向させて前記シート状材料Ｗの表面にプロファイルを成形するように構成したプロファイル付き圧延手段（３）を対設し、このプロファイル付き圧延手段（３）により、軸方向両端部に一定の傾斜角度のテーパ部（６ａ、６ｂ）を備え、かつ成形ドラムのドラム周長に対応させた幅Ｈを有するシート状材料Ｗを成形し、該シート状材料Ｗを長手方向に所定の長さＬに切断してシート状材料Ｗａを形成し、このシート状材料Ｗａの幅方向両端部のテーパ部（６ａ、６ｂ）同士を貼合わせて段差の無いタイヤ構成部材を製造することを要旨とするものである。
【０００７】
また、前記幅方向両端部を一定の傾斜角度のテーパ部（６ａ、６ｂ）に成形したシート状材料Ｗａとして、前記ドラム周長の１／Ｎの長さのシート状材料Ｗａを複数枚成形し、この１／Ｎの長さの各シート状材料Ｗａのテーパ部（６ａ、６ｂ）同士を貼合わせることも可能である。
【０００８】
この発明は、上記のように構成され、シート材料の成形工程で、シート材料の幅方向両端部を一定の傾斜角度のテーパ部を成形すると同時に、成形ドラムのドラム周長に対応させた幅でシート材料を成形し、このシート材料を所定の長さに切断して幅方向両端部を貼合わせる際、貼合わせ部に段差の無い状態で貼合わせが可能となり、これにより、タイヤの品質並びにタイヤの外観を向上させることが出来るものである。
【０００９】
【発明の実施の形態】
以下、添付図面に基づきこの発明の実施の形態を説明する。
【００１０】
図１は、この発明のタイヤ構成部材の製造方法を実施するための製造装置の断面図を示し、１は押出し機、２は押出し機１のヘッド、３は押出しヘッドに取付けられたプロファイル付き圧延手段を示し、このプロファイル付き圧延手段３は、表面にシート材料Ｗのプロファイル形状に対応する形態の溝４を一方のロールに備えた二本の圧延ロール５ａ，５ｂが鉛直向きに近接して取付けられている。
【００１１】
そして、前記押出し機１から押出されたゴム状弾性体は、押出しヘッド２によりシート状に成形され、更に二本の圧延ロール５ａ，５ｂにより、図３（ａ），（ｂ）に示すような幅方向両端部に一定の傾斜角度のテーパ部６ａ，６ｂを備え、かつ図示しない成形ドラムのドラム周長に対応させた幅Ｈで帯状のシート材料Ｗが成形される。
【００１２】
なお、図２に示すように、片側のみのロール５ｃで、一方はプロファイル成形用ダイスによる方式、所謂、シングルローラダイ等の方式でも形成することは可能である。
【００１３】
このシート材料Ｗは、シート材料Ｗの長手方向で図示しない切断装置により切断位置ＸーＸを所定の長さＬに切断され、切断されたシート材料Ｗａは、搬送コンベヤーや転写ドラム等の搬送手段を介して成形ドラム側に供給されて貼合わされる。
【００１４】
成形ドラム上でのシート材料Ｗａの貼合わせは、図４（ａ），（ｂ），（ｃ）に示すように、予めドラム周長に対応させた幅Ｈで成形されたシート材料Ｗａを巻付けた後、端末部に形成された一定の傾斜角度のテーパ部６ａ，６ｂ同士を突き合わせて貼合わせ、その上からローラ等で圧着させることで、段差の無い状態で貼合わせが可能となる。
【００１６】
以上のように、この発明の実施形態では、シート材料Ｗの成形工程で、シート材料Ｗの幅方向両端部を一定の傾斜角度のテーパ部６ａ，６ｂを成形すると同時に、成形ドラムのドラム周長に対応させた幅Ｈでシート材料Ｗを成形し、このシート材料Ｗを所定の長さＬに切断して幅方向両端部を貼合わせる際、貼合わせ部に段差の無い状態で貼合わせが可能となり、これにより、タイヤの品質並びにタイヤの外観を向上させることが出来るものである。
【００１７】
なお、前記幅方向両端部を一定の傾斜角度のテーパ部６ａ，６ｂに形成したシート材料Ｗｂを、図５（ａ）〜（ｄ）に示すように、前記ドラム周長の１／Ｎの長さのシート状材料Ｗｂとして複数枚成形し、この１／Ｎの長さの各シート材料Ｗｂのテーパ部６ａ，６ｂをそれぞれ突き合わせて貼合わせ、段差の無いタイヤ構成部材を製造することもできる。
【００１８】
【発明の効果】
この発明は、上記のようにプロファイル付き圧延手段により、幅方向両端部に一定の傾斜角度のテーパ部を備え、シート両端部を極薄いゲージに形成し、かつ成形ドラムのドラム周長に対応させた幅でシート材料を成形し、該シート材料を所定の長さに切断し、このシート材料の幅方向両端部のテーパ部同士を貼合わせてゲージの均一な段差の無いシート材料を製造するので、タイヤの品質並びにタイヤの外観を向上させることが出来る効果がある。
【００２０】
また、幅の狭いシート材料の製造設備で、タイヤ構成材料に相当する均一な広幅のシート材料を得ることが出来るので、安価で小型設備が可能となる。
【図面の簡単な説明】
【図１】この発明のタイヤ構成部材の製造方法を実施するための製造装置の断面図である。
【図２】この発明の他の実施形態を実施するための製造装置における一部断面図である。
【図３】（ａ）は、この発明により製造されるシート材料の一部平面図、（ｂ）は（ａ）のＢ−Ｂ矢視断面図である。
【図４】（ａ），（ｂ），（ｃ）は、シート材料の端末部の貼合わせ方法の説明図である。
【図５】（ａ），（ｂ），（ｃ），（ｄ）は、この発明の更に他の実施形態の説明図である。
【符号の説明】
１ 押出し機
２ 押出しヘッド
３ プロファイル付き圧延手段
４ 溝
５ａ，５ｂ 圧延ロール
５ｃ ロール
６ａ，６ｂ テーパ部
Ｗ シート材料
Ｗａ，Ｗｂ 切断されたシート材料
Ｈ シート材料の幅
Ｌ 切断長さ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a tire constituent member such as an inner liner, and more specifically, manufacture of a tire constituent member that enables both end portions in the width direction of a sheet material formed into a sheet shape to be bonded together without any step. It is about the method.
[0002]
[Prior art]
Conventionally, when forming a sheet material such as an inner liner to be used as a tire component material with two or more calenders, the sheet is trimmed at the tire specification width and rolled into a long length when rolled, then the sheet The material is used after being cut into a required length (for example, a length corresponding to the drum circumference) in a tire molding machine.
[0003]
[Problems to be solved by the invention]
By the way, there is a method of obliquely cutting the bonded terminal portion of the sheet material for the purpose of improving quality, improving the appearance, etc., but there is a limit to the angle of the cut end face, and therefore the terminal portion is abutted. When pasted in a state or in an overlapped state, the bonding strength was insufficient or a step was formed, causing problems such as poor appearance.
[0004]
Therefore, a so-called lap splice method is adopted in which the end portions of the sheet material are pasted with a predetermined width, but there are problems in the appearance and performance of the joint portion.
[0005]
An object of the present invention is to form a sheet material at a predetermined width by forming a sheet material with a width corresponding to the drum circumferential length of the forming drum, and having a taper portion with a constant inclination angle at both ends in the width direction in the forming step of the sheet material. It is an object of the present invention to provide a method for manufacturing a tire constituent member that can be laminated in a state without a step when a sheet material cut into a length is bonded, and that can improve the quality of the tire and the appearance of the tire.
[0006]
[Means for Solving the Problems]
The first invention for achieving the above Symbol purpose, the extrusion head (2) of the sheet material W extruding extruder made of a rubber-like elastic body (1), two rolling rolls (5a for pressurizing contact with each other 5b), and a profiled rolling means (3) configured to provide a groove (4) corresponding to the profile shape on the surface of one of the rolling rolls (5a). According to (3) , a sheet-like material W having a taper portion (6a, 6b) having a constant inclination angle at both axial end portions and having a width H corresponding to the drum circumferential length of the forming drum is formed. the Jo material W is cut into a predetermined length L in the longitudinal direction to form a sheet-like material Wa, no step in laminated tapered portion (6a, 6b) of both widthwise ends of the sheet-like material Wa to each other to produce tire components It is an effect.
The second invention for achieving the above object is characterized in that the discharge head of the extrusion head (2) is connected to the extrusion head (2) of the extruder (1) for extruding the sheet-like material W made of a rubber-like elastic body. The profile-equipped rolling means (3) configured to form a profile on the surface of the sheet-like material W with the roll (5c) only on one side facing each other, with the profile-equipped rolling means (3), A sheet-like material W having taper portions (6a, 6b) having a constant inclination angle at both axial end portions and having a width H corresponding to the drum circumferential length of the forming drum is formed, and the sheet-like material W is elongated. A sheet-shaped material Wa is formed by cutting into a predetermined length L in the direction, and taper portions (6a, 6b) at both ends in the width direction of the sheet-shaped material Wa are bonded together to produce a tire constituent member having no step. To do Than is.
[0007]
Further, a plurality of sheet-like materials Wa having a length of 1 / N of the drum circumferential length are formed as the sheet-like material Wa having both end portions in the width direction formed into taper portions (6a, 6b) having a constant inclination angle. The taper portions (6a, 6b) of each sheet-like material Wa having a length of 1 / N can be bonded together.
[0008]
The present invention is configured as described above, and in the sheet material forming step, both ends in the width direction of the sheet material are formed with tapered portions having a constant inclination angle, and at the same time, the width corresponds to the drum circumferential length of the forming drum. shaping the sheet material, the time of is laminated to both widthwise ends of the sheet material is cut to a predetermined length, enables alignment lamination in the absence of steps to cause Awa pasting unit, thereby, the quality of the tire and The appearance of the tire can be improved.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
[0010]
FIG. 1 is a cross-sectional view of a manufacturing apparatus for carrying out the method for manufacturing a tire component according to the present invention, where 1 is an extruder, 2 is a head of an extruder 1, and 3 is a profiled roll attached to the extrusion head. This rolling means 3 with a profile shows that two rolling rolls 5a and 5b each having a groove 4 in a form corresponding to the profile shape of the sheet material W on the surface are attached in the vertical direction. It has been.
[0011]
And the rubber-like elastic body extruded from the said extruder 1 is shape | molded by the extrusion head 2 at a sheet form, and also as shown to FIG. 3 (a), (b) with two rolling rolls 5a and 5b. tapered part 6a of the fixed inclination angle in the width direction end portions, comprising a 6b, and the sheet material W of the strip width H which is corresponding to the drum circumference (not shown) forming drum is formed.
[0012]
As shown in FIG. 2, it is possible to form the roll 5c only on one side, one of which is formed by a profile forming die, that is, a so-called single roller die.
[0013]
The sheet material W is cut into a predetermined length L at a cutting position XX in a longitudinal direction of the sheet material W by a cutting device (not shown), and the cut sheet material Wa is transport means such as a transport conveyor or a transfer drum. Is supplied to the forming drum side via the adhesive and bonded.
[0014]
As shown in FIGS. 4A, 4B, and 4C, the sheet material Wa is laminated on the forming drum by winding the sheet material Wa formed in advance with a width H corresponding to the drum circumferential length. After being attached, the taper portions 6a and 6b formed at the terminal portion with a certain inclination angle are brought into contact with each other and bonded together, and then bonded together with a roller or the like, whereby bonding can be performed without any step.
[0016]
As described above, in the embodiment of the present invention, in the forming step of the sheet material W, the taper portions 6a and 6b having a constant inclination angle are formed at both ends in the width direction of the sheet material W, and at the same time, the drum peripheral length of the forming drum. shaping the sheet material W in a width H which is corresponding to, the sheet material W is cut to a predetermined length L when is laminated to both widthwise end portions, alignment lamination in the absence of steps to cause Awa stuck portion This makes it possible to improve the quality of the tire and the appearance of the tire.
[0017]
Note that the sheet material Wb having both end portions in the width direction formed into taper portions 6a and 6b having a constant inclination angle has a length of 1 / N of the drum circumferential length as shown in FIGS. 5 (a) to 5 (d). a plurality of sheets formed as a sheet-like material Wb, the tapered portion 6a of the sheet material Wb of the length of the 1 / N, 6b a laminated against each can also be produced tire components no step.
[0018]
【The invention's effect】
In the present invention, as described above, the profile-equipped rolling means is provided with tapered portions having a constant inclination angle at both ends in the width direction, both ends of the sheet are formed into extremely thin gauges, and the drum circumference of the forming drum is made to correspond. Since the sheet material is molded with a certain width, the sheet material is cut into a predetermined length, and the taper portions at both ends in the width direction of the sheet material are bonded together to produce a sheet material without a uniform step of the gauge. There is an effect that the quality of the tire and the appearance of the tire can be improved.
[0020]
Moreover, since a uniform wide sheet material corresponding to a tire constituent material can be obtained with a production facility for a narrow sheet material, a small and inexpensive facility is possible.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a manufacturing apparatus for carrying out a method of manufacturing a tire constituent member according to the present invention.
FIG. 2 is a partial cross-sectional view of a manufacturing apparatus for carrying out another embodiment of the present invention.
3A is a partial plan view of a sheet material manufactured according to the present invention, and FIG. 3B is a cross-sectional view taken along the line BB in FIG. 3A.
[4] (a), (b), (c) is an explanatory view of a laminating process of the terminal portion of the sheet material.
[5] (a), (b), (c), (d) is an explanatory view of yet another embodiment of the present invention.
[Explanation of symbols]
1 extruder 2 extrusion head 3 profiled rolling means 4 grooves 5a, 5b rolling roll
5c roll 6a, 6b tapered portion W is over door material
Wa, Wb Cut sheet material H Width of sheet material L Cut length

Claims (3)

ゴム状弾性体からなるシート状材料Ｗを押出す押出機（１）の押出しヘッド（２）に、互いに接圧する二本の圧延ロール（５ａ、５ｂ）を有し、かつ一方の圧延ロール（５ａ）の表面にプロファイル形状に対応する溝（４）を設けるように構成したプロファイル付き圧延手段（３）を対設し、このプロファイル付き圧延手段（３）により、軸方向両端部に一定の傾斜角度のテーパ部（６ａ、６ｂ）を備え、かつ成形ドラムのドラム周長に対応させた幅Ｈを有するシート状材料Ｗを成形し、該シート状材料Ｗを長手方向に所定の長さＬに切断してシート状材料Ｗａを形成し、このシート状材料Ｗａの幅方向両端部のテーパ部（６ａ、６ｂ）同士を貼合わせて段差の無いタイヤ構成部材を製造するタイヤ構成部材の製造方法。 The extrusion head (2) of the extruder (1) that extrudes the sheet-like material W made of a rubber-like elastic body has two rolling rolls (5a, 5b) that come into contact with each other, and one rolling roll (5a ) Is provided with a profile rolling means (3) configured to provide a groove (4) corresponding to the profile shape on the surface, and the profiled rolling means (3) provides a constant inclination angle at both ends in the axial direction. The sheet material W having a taper portion (6a, 6b) and having a width H corresponding to the drum circumferential length of the forming drum is formed, and the sheet material W is cut into a predetermined length L in the longitudinal direction. method of manufacturing and to form a sheet-like material Wa, the tapered portion (6a, 6b) of both widthwise ends of the sheet material Wa tire components are laminated to each other to produce a tire component no step. ゴム状弾性体からなるシート状材料Ｗを押出す押出機（１）の押出しヘッド（２）に、該押出しヘッド（２）の吐出部に片側のみのロール（５ｃ）を対向させて前記シート状材料Ｗの表面にプロファイルを成形するように構成したプロファイル付き圧延手段（３）を対設し、このプロファイル付き圧延手段（３）により、軸方向両端部に一定の傾斜角度のテーパ部（６ａ、６ｂ）を備え、かつ成形ドラムのドラム周長に対応させた幅Ｈを有するシート状材料Ｗを成形し、該シート状材料Ｗを長手方向に所定の長さＬに切断してシート状材料Ｗａを形成し、このシート状材料Ｗａの幅方向両端部のテーパ部（６ａ、６ｂ）同士を貼合わせて段差の無いタイヤ構成部材を製造するタイヤ構成部材の製造方法。The sheet-like material is formed by causing the roll (5c) only on one side to face the extrusion head (2) of the extruder (1) for extruding the sheet-like material W made of a rubber-like elastic body. A profiled rolling means (3) configured to form a profile on the surface of the material W is provided, and the profiled rolling means (3) provides tapered portions (6a, 6a, 6b) and forming a sheet-like material W having a width H corresponding to the drum circumferential length of the forming drum, and cutting the sheet-like material W into a predetermined length L in the longitudinal direction. Is formed, and the taper portions (6a, 6b) at both ends in the width direction of the sheet-like material Wa are bonded to each other to manufacture a tire constituent member having no level difference. 前記幅方向両端部を一定の傾斜角度のテーパ部（６ａ、６ｂ）に成形したシート状材料Ｗａとして、前記ドラム周長の１／Ｎの長さのシート状材料Ｗａを複数枚成形し、この１／Ｎの長さの各シート状材料Ｗａのテーパ部（６ａ、６ｂ）同士を貼合わせる請求項１又は２に記載のタイヤ構成部材の製造方法。A plurality of sheet-like materials Wa having a length of 1 / N of the drum circumferential length are formed as sheet-like material Wa in which both end portions in the width direction are formed into tapered portions (6a, 6b) having a constant inclination angle. the tapered portion of each sheet-like material Wa of the length of 1 / N (6a, 6b) the method of producing a tire component member according to claim 1 or 2 being combined bonded to each other.
JP2000149290A 2000-05-22 2000-05-22 Manufacturing method of tire component Expired - Fee Related JP4415452B2 (en)

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JP4244279B2 (en) * 2002-03-06 2009-03-25 株式会社ブリヂストン Rubber sheet manufacturing method
ES2316730T3 (en) * 2002-02-22 2009-04-16 Bridgestone Corporation METHOD FOR PRODUCING A MEMBER OF SLIM RUBBER, RUBBER LAMINATION DEVICE AND RUBBER ROLLING METHOD.
US8981178B2 (en) 2009-12-30 2015-03-17 Kimberly-Clark Worldwide, Inc. Apertured segmented films
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US10081123B2 (en) 2010-12-31 2018-09-25 Kimberly-Clark Worldwide, Inc. Segmented films with high strength seams
US8895126B2 (en) * 2010-12-31 2014-11-25 Kimberly-Clark Worldwide, Inc. Segmented films with high strength seams
US9676164B2 (en) 2011-07-18 2017-06-13 Kimberly-Clark Worldwide, Inc. Extensible sheet material with visual stretch indicator

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