JPH11291363A - Tire molding machine and method for molding tire using the same - Google Patents
Tire molding machine and method for molding tire using the sameInfo
- Publication number
- JPH11291363A JPH11291363A JP10092921A JP9292198A JPH11291363A JP H11291363 A JPH11291363 A JP H11291363A JP 10092921 A JP10092921 A JP 10092921A JP 9292198 A JP9292198 A JP 9292198A JP H11291363 A JPH11291363 A JP H11291363A
- Authority
- JP
- Japan
- Prior art keywords
- rubber member
- belt
- tire
- shaped rubber
- roll
- 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)
- B29D30/38—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、グリーンタイヤ
の製造に用いて好適なタイヤ成型装置およびそれを用い
たタイヤ成型方法に関するものであり、製品タイヤの内
部加硫度、ひいては、それの所要部材の物性の、適宜の
コントロールを可能とし、また、タイヤ内部の十分均一
な加硫の他、加硫時間の短縮をも可能としたものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire molding apparatus suitable for producing a green tire and a tire molding method using the same, and it relates to a degree of internal vulcanization of a product tire, and a required member thereof. The physical properties of the tire can be appropriately controlled, and the vulcanization time can be shortened in addition to sufficiently uniform vulcanization inside the tire.
【０００２】[0002]
【従来の技術】成型ドラム上で成型してなる従来の一般
的なグリーンタイヤや、特開昭６３−８９３３６号公報
に開示されているような、製品タイヤの内周面形状と対
応する外輪郭形状を有するコア上にゴムストリップを巻
回して成型してなるグリーンタイヤ等を加硫モールド内
で加硫成形するに当たっての加硫時間の設定は、通常
は、加硫の進行が最も遅れる、たとえば、ビード部、ト
レッドショルダー部等での加硫度合を基準として行われ
ている。2. Description of the Related Art A conventional general green tire molded on a molding drum and an outer contour corresponding to the inner peripheral surface shape of a product tire as disclosed in JP-A-63-89336. The setting of the vulcanization time for vulcanizing a green tire or the like formed by winding a rubber strip on a core having a shape in a vulcanization mold is usually the slowest in vulcanization, for example, , A bead portion, a tread shoulder portion, and the like.
【０００３】[0003]
【発明が解決しようとする課題】これがため、加硫の開
始から終了に至るまでの時間が総じて長くなって加硫能
率が低いという問題があり、しかも、加硫モールドに接
触する部分と、接触しない内部部分との間に、温度勾配
に起因する加硫度の差が生じることから、内部部分の加
硫度を適正なものとした場合には、加硫モールドとの接
触部分が過加硫になるという問題もあった。Therefore, there is a problem that the time from the start to the end of vulcanization is generally long and the vulcanization efficiency is low. Since the difference in vulcanization degree due to the temperature gradient occurs between the internal part and the vulcanization mold, if the vulcanization degree of the internal part is made appropriate, the part in contact with the vulcanization mold will be over vulcanized. There was also the problem of becoming.
【０００４】この一方で、ゴムの配合を考慮して加硫速
度を速め、加硫時間の短縮を図った場合には、ゴム練
り、ゴムへの型付け等に際する発熱によって不測のスコ
ーチが生じたり、製品タイヤのゴム物性が所期した通り
のものにならない等の他の問題があった。On the other hand, when the vulcanization speed is increased by shortening the vulcanization time in consideration of the compounding of rubber, unexpected scorch is generated due to heat generated during rubber kneading and molding of rubber. And other problems such as the rubber properties of the product tire not being as expected.
【０００５】その上、この従来技術では、タイヤ深部の
加硫が遅れる傾向にあることは別として、所要に応じた
特定部分だけの加硫度を高めまたは低めることによっ
て、タイヤのゴム物性を作為的にコントロールすること
が実質的に不可能であった。In addition, in this prior art, apart from the fact that the vulcanization of the deep part of the tire tends to be delayed, the rubber physical properties of the tire are modified by increasing or decreasing the degree of vulcanization of a specific portion as required. Was virtually impossible to control.
【０００６】この発明は、従来技術が抱えるこのような
問題点をことごとく解決することを課題として検討した
結果なされたものであり、それの目的とするところは、
製品タイヤに所期した通りのゴム物性を付与することに
加え、スコーチの発生を十分に防止してゴムの押出し等
の作業性を向上させることはもちろんとして、加硫時間
の短縮に基づく加硫能率の向上と併せて、タイヤ内部の
均一加硫を実現してなお、製品タイヤの所要部分のゴム
物性を作為的にコントロールすることができるタイヤ成
型装置およびそれを用いたタイヤ成型方法を提供するに
ある。[0006] The present invention has been made as a result of studying to solve all such problems of the prior art, and the purpose of the invention is to provide:
In addition to imparting the expected rubber properties to the product tires, the vulcanization based on shortening the vulcanization time, as well as improving the workability such as extruding rubber by sufficiently preventing the occurrence of scorch Provided is a tire molding apparatus and a tire molding method using the same, in which uniform vulcanization inside the tire is realized in addition to the improvement in efficiency, and the rubber properties of a required portion of a product tire can be artificially controlled. It is in.
【０００７】[0007]
【課題を解決するための手段】この発明のタイヤ成型装
置は、回転駆動される成型型上に、帯状ゴム部材、たと
えば、幅が１０〜４０ｍｍ、厚みが０．５〜３ｍｍ程度
のゴムストリップを巻回してタイヤを成型するものであ
り、帯状ゴム部材の供給手段と成型型との間に、帯状ゴ
ム部材の加熱手段を配設したものである。According to the present invention, there is provided a tire molding apparatus comprising a belt-shaped rubber member, for example, a rubber strip having a width of about 10 to 40 mm and a thickness of about 0.5 to 3 mm, which is rotatably driven. The tire is wound to form a tire, and heating means for the belt-shaped rubber member is provided between the feeding means for the belt-shaped rubber member and the molding die.
【０００８】ここで好ましくは、帯状ゴム部材の供給手
段を定容積押出装置により構成し、また好ましくは、成
型型を、製品タイヤの内面形状と対応する外輪郭形状を
有する、可撓材料または剛性材料からなるコアにより構
成する。Here, preferably, the supply means of the belt-shaped rubber member is constituted by a constant volume extruder, and preferably, the molding die is made of a flexible material or a rigid material having an outer contour shape corresponding to the inner surface shape of the product tire. It is composed of a core made of a material.
【０００９】そしてまた好ましくは、加熱手段を、帯状
ゴム部材に接触して、それの供給速度とほぼ等しい周速
で回転する熱ロールおよび、帯状ゴム部材に対向して位
置する赤外線照射装置の少なくとも一方によって構成す
る。ところで、赤外線照射装置を用いる場合には、それ
を帯状ゴム部材に対して接近および離反可能に構成する
ことが好ましい。[0009] Preferably, the heating means includes at least one of a heat roll which comes into contact with the belt-shaped rubber member and rotates at a peripheral speed substantially equal to the supply speed thereof, and an infrared irradiation device which is located opposite to the belt-shaped rubber member. It consists of one. By the way, when an infrared irradiation device is used, it is preferable that the infrared irradiation device is configured to be able to approach and separate from the belt-shaped rubber member.
【００１０】この発明のタイヤ成型方法は、帯状ゴム部
材の供給手段から繰り出されるその帯状ゴム部材を、加
熱手段を経て成型型上に巻回するに当たり、加熱手段に
よる帯状ゴム部材の加熱温度を、その帯状ゴム部材の巻
回位置に応じて適宜に変化させることを特徴とするもの
である。In the tire molding method of the present invention, when the belt-like rubber member fed from the belt-like rubber member supply means is wound on a molding die via the heating means, the heating temperature of the belt-like rubber member by the heating means is set to It is characterized in that it is appropriately changed according to the winding position of the belt-shaped rubber member.
【００１１】ここでは、帯状ゴム部材を成型型上に巻回
するに先だって、その帯状ゴム部材を、加熱手段をもっ
て、それの巻回位置に応じた所要温度に加熱すること
で、たとえば、グリーンタイヤの、加硫モールド内での
加硫の進行が最も遅れる傾向にある内部部分の温度を予
め十分に高めることができ、これにより、タイヤ全体を
均一に加硫するに要する時間を有効に短縮し、併せて、
加硫モールドとの接触部分への過加硫の発生を効果的に
防止することができる。Here, prior to winding the band-shaped rubber member on a molding die, the band-shaped rubber member is heated to a required temperature according to the winding position by a heating means, for example, to obtain a green tire. However, it is possible to sufficiently raise in advance the temperature of the internal portion where the progress of vulcanization in the vulcanization mold tends to be the slowest, thereby effectively reducing the time required for uniformly vulcanizing the entire tire. ,together,
It is possible to effectively prevent the occurrence of over-vulcanization at the contact portion with the vulcanization mold.
【００１２】従ってここにおいては、加硫速度を速める
ための特別のゴム配合を行うことが不要となり、これが
ため、ゴムの成形等に際するスコーチの発生を防止し、
併せて、製品タイヤのゴム物性を所期した通りのものと
することができる。Therefore, in this case, it is not necessary to perform special rubber compounding for increasing the vulcanization rate, and this prevents the occurrence of scorch during rubber molding and the like,
At the same time, the rubber properties of the product tire can be as expected.
【００１３】ところで、このゴム物性との関連におい
て、製品タイヤのゴムの、たとえばモジュラスは、それ
の加硫度との関連において変化するものであり、また、
その加硫度は、帯状ゴム部材の加熱手段による予備加熱
温度によっても変化するものであることよりすれば、帯
状ゴム部材の予備加熱温度をそれの巻回位置に応じて適
宜に変化させることで、製品タイヤの構成各部の加硫度
を所要に応じて異ならせることができ、この結果とし
て、ゴム物性を、同一種類のゴム部材を用いてなお、作
為的にコントロールすることができる。By the way, in relation to the rubber physical properties, for example, the modulus of the rubber of the product tire changes in relation to the degree of vulcanization thereof.
According to the fact that the degree of vulcanization also varies depending on the preheating temperature of the belt-shaped rubber member by the heating means, by appropriately changing the preheating temperature of the belt-shaped rubber member according to its winding position. The degree of vulcanization of each component of the product tire can be varied as required, and as a result, the physical properties of the rubber can be intentionally controlled using the same type of rubber member.
【００１４】ここで、帯状ゴム部材の供給手段は、予め
別工程で帯状に成形して巻回してなる冷却ゴムロールの
他、カレンダー、押出機、ローラダイ等によって構成す
ることも可能であるが、帯状ゴム部材の寸法精度及び質
量精度の向上のためには、それを定容積押出装置にて構
成することが好ましい。Here, the supply means of the belt-shaped rubber member can be constituted by a calender, an extruder, a roller die, or the like, in addition to a cooling rubber roll formed and wound in a belt shape in a separate step in advance. In order to improve the dimensional accuracy and mass accuracy of the rubber member, it is preferable to configure the rubber member with a constant volume extrusion device.
【００１５】そして、ここでの成型型は、従来から広く
一般に使用されているフラット成型ドラム、更生タイヤ
用の台タイヤ、マンドレル等にて構成し得ることはもち
ろんであるが、製品タイヤの内面形状と対応する外輪郭
形状を有するコアにて構成した場合には、その上で成型
されたグリーンタイヤを、そのコアとともに加硫モール
ド内に直接的に装填することができ、従来の課題であっ
たグリーンタイヤの搬送時の変形の問題がなくなる。The molding die here can be composed of a flat molding drum, a base tire for retreaded tires, a mandrel, etc., which have been widely used in the past. In the case of using a core having an outer contour shape corresponding to the above, the green tire molded thereon can be directly loaded into the vulcanization mold together with the core, which is a conventional problem. The problem of deformation during transportation of the green tire is eliminated.
【００１６】また、加熱手段を熱ロールにより構成した
場合には、それの、帯状ゴム部材との接触長さを選択す
ることで、熱ロールそれ自身の加熱温度の調節と相俟っ
て、その帯状ゴム部材の加熱温度を所要に応じて調整す
ることができる。When the heating means is constituted by a heat roll, by selecting the contact length of the heat roll with the belt-shaped rubber member, the heating temperature of the heat roll itself can be adjusted and the heating roller can be heated. The heating temperature of the belt-shaped rubber member can be adjusted as required.
【００１７】加熱手段を赤外線照射装置によって構成し
たときは、照射量制御および、照射のオン・オフ制御を
もって加熱温度を適宜に調整することができる他、その
赤外線照射装置それ自体を、帯状ゴム部材に対して接近
および離反変位させることで、帯状ゴム部材の加熱温度
を、それの長さ方向で漸次変化させることもできる。な
お、タイヤ内部の均一加硫は熱ロールにより、また、ゴ
ム物性の作為的コントロールは赤外線照射装置によるの
が各々好適で、他方の手段を併せて補助的に使用でき
る。When the heating means is constituted by an infrared irradiation device, the heating temperature can be appropriately adjusted by controlling the irradiation amount and on / off control of the irradiation, and the infrared irradiation device itself can be used as a belt-shaped rubber member. , The heating temperature of the belt-shaped rubber member can be gradually changed in the length direction thereof. It is preferable that the uniform vulcanization inside the tire is performed by a hot roll, and that the intentional control of the physical properties of the rubber is performed by an infrared irradiation device. The other means can be used together.
【００１８】[0018]
【発明の実施の形態】以下にこの発明の実施の形態を図
面に示すところに基づいて説明する。図１は、この発明
の実施の形態を示す略線斜視図であり、図中１は定容積
押出装置を示す。従来既知のこの定容積押出装置１は、
その口金２を経て、たとえば、幅が１０〜４０ｍｍ、厚
みが０．５〜３ｍｍのそれぞれの範囲内の帯状ゴム部材
３を高い寸法精度をもって押出し成形する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view showing an embodiment of the present invention, in which 1 indicates a constant volume extrusion device. Conventionally known constant volume extrusion device 1
Through the base 2, for example, a band-shaped rubber member 3 having a width of 10 to 40 mm and a thickness of 0.5 to 3 mm is extruded with high dimensional accuracy.
【００１９】このような定容積押出装置１と隣接する位
置に、加熱手段の一例としての熱ロール４を配設し、こ
の熱ロール４を、帯状ゴム部材３の供給速度とほぼ等し
い周速で回転可能ならしめるとともに、熱ロールそれ自
身の加熱温度を、コントローラ５によって調節可能なら
しめる。A heat roll 4 as an example of a heating means is disposed at a position adjacent to the constant volume extrusion device 1, and the heat roll 4 is rotated at a peripheral speed substantially equal to the feeding speed of the belt-shaped rubber member 3. The heating temperature of the heating roll itself can be adjusted by the controller 5 while being rotatable.
【００２０】そして、かかる熱ロール４と隣接する位置
には、成型型、好適には、製品タイヤの内面形状と対応
する外輪郭形状を有する可撓性のもしくは剛性のコア６
を配設し、このコア６に、それを軸線の周りに所要の周
速で駆動する図示しないモータを連結する。ここで、こ
のコア６は、そこへ送給される帯状ゴム部材３を、コア
６の所要位置に適正に巻回すべく、後述するように、帯
状ゴム部材３の供給姿勢に対して相対姿勢を適宜に変更
可能ならしめることが好ましく、また、帯状ゴム部材３
の巻回位置の周速を、その巻回位置の回転半径との関係
の下で、帯状ゴム部材３の送給速度と実質的に等しく保
つことが好ましい。At a position adjacent to the heat roll 4, a flexible or rigid core 6 having an outer contour shape corresponding to the inner surface shape of a product tire, preferably a mold, is provided.
And a motor (not shown) for driving the core 6 around the axis at a required peripheral speed is connected to the core 6. Here, the core 6 has a relative posture with respect to the supply posture of the band-shaped rubber member 3 as described later in order to appropriately wind the band-shaped rubber member 3 fed thereto at a required position of the core 6. It is preferable that it can be changed appropriately.
It is preferable that the peripheral speed at the winding position is kept substantially equal to the feeding speed of the belt-shaped rubber member 3 in relation to the rotation radius at the winding position.
【００２１】これがため、たとえば、帯状ゴム部材３が
常に一定位置で、一定の姿勢でコア６に供給される場合
には、図２に示すように、少なくとも、コア６を、それ
の高さ方向Ｖおよび軸線方向Ｈのそれぞれの方向に並進
運動自在として、コア上への帯状ゴム部材３の積層、タ
イヤサイズの切り替え等に対処可能とし、また、そのコ
ア６を、それの軸線を含む水平面内でそれと直交する中
心線の周りで揺動自在として、帯状ゴム部材３の巻回位
置に応じたコア６の回転姿勢の変更を可能とする。For this reason, for example, when the belt-shaped rubber member 3 is always supplied to the core 6 at a fixed position and in a fixed posture, as shown in FIG. V and translational movement in each of the axial directions H, so that it is possible to cope with lamination of the band-shaped rubber member 3 on the core, switching of tire size, and the like, and to place the core 6 in a horizontal plane including its axis. Thus, it is possible to swing around a center line orthogonal to the center line, and to change the rotation posture of the core 6 according to the winding position of the belt-shaped rubber member 3.
【００２２】図３は、このことを、コア６の一方の側面
部分から頂部にかけて帯状ゴム部材３を順次に巻回する
場合について示す説明図であり、この場合には、一定の
位置に、一定姿勢で供給される帯状ゴム部材３に対し、
コア６の回転軸線を垂直姿勢から水平姿勢まで漸次変化
させながら、その帯状ゴム部材３を巻回し、これと併せ
て、その巻回位置の、回転軸線からの距離の変化およ
び、コア６の揺動中心に対する水平方向位置の変化に応
じて、コア６の高さおよび水平位置を変化させること
で、コア６のほぼ全体にわたる、一定の条件の下での一
連の巻回を行うことができる。なおここで、コア６の他
方も側面部分から頂部にかけての巻回もまた、上述した
とほぼ同様にして行い得ることは勿論である。FIG. 3 is an explanatory view showing a case where the belt-shaped rubber member 3 is sequentially wound from one side surface portion to the top portion of the core 6, and in this case, the band-shaped rubber member 3 is fixed at a fixed position. For the belt-shaped rubber member 3 supplied in the posture,
While gradually changing the rotation axis of the core 6 from the vertical posture to the horizontal posture, the belt-shaped rubber member 3 is wound, and at the same time, the change of the distance of the winding position from the rotation axis and the swing of the core 6 are caused. By changing the height and the horizontal position of the core 6 in accordance with the change in the horizontal position with respect to the moving center, a series of windings can be performed over the entire core 6 under constant conditions. Here, it is needless to say that the winding of the other side of the core 6 from the side surface portion to the top portion can also be performed in substantially the same manner as described above.
【００２３】ここで、帯状ゴム部材３の供給速度が一定
である場合には、それの巻回位置のコア６の回転中心か
らの距離が漸次変化してもなお、巻回位置のコア速度
が、帯状ゴム部材３の供給速度と実質的に等しくなるよ
うにコア６の回転速度をコントロールする。Here, when the feeding speed of the belt-shaped rubber member 3 is constant, the core speed at the winding position is still maintained even if the distance of the winding position from the rotation center of the core 6 gradually changes. The rotation speed of the core 6 is controlled so as to be substantially equal to the supply speed of the belt-shaped rubber member 3.
【００２４】なお、成型型を、それの円筒状外周面にだ
け帯状ゴム部材３を巻回する、図４に示すようなフラッ
ト成型ドラム７とするとともに、帯状ゴム部材３を、成
型ドラム７の前方側周面に、そのドラム７のほぼ半径方
向内方に向けて押圧する構成とした場合には、その成型
ドラム７を、図に矢印Ａで示すように前後方向に揺動さ
せることで、帯状ゴム部材３の積層に伴う外径の増加お
よびタイヤサイズの切り替え等に対処し、また、図に矢
印Ｂで示すように、成型ドラム７の中心を通る垂線の周
りで旋回させることで、帯状ゴム部材３の巻回位置を、
ドラム７の軸線方向に変化させることができる。The molding die is a flat molding drum 7 as shown in FIG. 4 in which the band-shaped rubber member 3 is wound only on the cylindrical outer peripheral surface thereof. When the configuration is such that the drum 7 is pressed radially inward on the front side peripheral surface, the forming drum 7 is swung in the front-rear direction as indicated by an arrow A in the figure. In order to cope with an increase in the outer diameter due to the lamination of the belt-shaped rubber members 3 and switching of the tire size, etc., the belt-shaped rubber member 3 is swung around a vertical line passing through the center of the molding drum 7 as shown by an arrow B in the figure. The winding position of the rubber member 3 is
It can be changed in the axial direction of the drum 7.
【００２５】以上のように構成してなる装置における帯
状ゴム部材の予備加熱は、図１に示すように、定容積押
出機１の口金２によって押出し成形された、所要の断面
寸法の帯状ゴム部材３を、予め所定の温度に加熱され、
帯状ゴム部材３の押出し速度と実質的に等しい周速で回
転される熱ロール４の周面に、所要の長さにわたって面
接触されることにより行うことができ、これにより、帯
状ゴム部材３は、通常は、１３０〜１８０℃程度の温度
に加熱される。As shown in FIG. 1, the preheating of the belt-like rubber member in the apparatus constructed as described above is carried out by extruding the rubber band member having a required cross-sectional dimension by a die 2 of a constant volume extruder 1. 3 is heated to a predetermined temperature in advance,
It can be performed by making a surface contact with the peripheral surface of the heat roll 4 rotated at a peripheral speed substantially equal to the extrusion speed of the belt-shaped rubber member 3 for a required length, whereby the belt-shaped rubber member 3 Usually, it is heated to a temperature of about 130 to 180 ° C.
【００２６】ちなみに、２００℃に加熱した熱ロール４
を用い、１．０ｍ／ｓの速度で押出し成形した、１００
℃の温度で、０．５ｍｍ厚さの帯状ゴム部材３を１５０
℃に加熱するに要する、帯状ゴム部材３と熱ロール４と
の所要の接触長さを求めるべく、そのゴム部材３の、熱
ロール４への接触時間と、帯状ゴム部材３の温度との関
係を測定したところ、図５にグラフで示す通りとなっ
た。これによれば、両者の接触時間を１．２秒とするこ
とで、帯状ゴム部材３を所要の１５０℃まで加熱し得る
ことが明らかであり、従って、両者の接触長さを１．２
ｍとすることで、所要の加熱を実現できることが解る。Incidentally, the hot roll 4 heated to 200 ° C.
And extruded at a speed of 1.0 m / s.
At a temperature of 150 ° C., the belt-shaped rubber member 3 having a thickness of 0.5 mm
Relationship between the contact time of the rubber member 3 with the heat roll 4 and the temperature of the rubber band 3 in order to obtain the required contact length between the belt-shaped rubber member 3 and the heat roll 4 required for heating to a temperature of ° C. Was measured, and the result was as shown in the graph of FIG. According to this, it is clear that the belt-shaped rubber member 3 can be heated to a required 150 ° C. by setting the contact time of both members to 1.2 seconds.
It is understood that required heating can be realized by setting m.
【００２７】ところで、定容積押出機１の口金２から押
出し成形するだけでは、帯状ゴム部材３の寸法精度等が
不足するときには、その帯状ゴム部材３をローラダイそ
の他の成形手段に再度通過させることもできる。またこ
こで，帯状ゴム部材３を、所要の長さにわたって、熱ロ
ール４の周面に確実に接触させるためには、その熱ロー
ル４の前後各部に、少なくとも一方は、ロール４の周方
向に位置可変の押圧ローラ８，９を配設する。When the dimensional accuracy of the band-shaped rubber member 3 is insufficient only by extrusion molding from the base 2 of the constant volume extruder 1, the band-shaped rubber member 3 may be passed again through a roller die or other forming means. it can. Here, in order to ensure that the belt-shaped rubber member 3 is brought into contact with the peripheral surface of the heat roll 4 over a required length, at least one of the front and rear portions of the heat roll 4 is disposed in the circumferential direction of the roll 4. Pressure rollers 8 and 9 whose positions are variable are provided.
【００２８】なおここで、熱ロール４による、帯状ゴム
部材３の一連の加熱中における加熱温度の変更は、コン
トローラ５の設定温度の変更および、帯状ゴム部材３の
ロール接触長さの変更の少なくとも一方により行うこと
ができる。Here, the change of the heating temperature during the series of heating of the belt-shaped rubber member 3 by the heat roll 4 is at least the change of the set temperature of the controller 5 and the change of the roll contact length of the belt-shaped rubber member 3. One can do it.
【００２９】このようにして所要の温度に加熱された帯
状ゴム部材３はその後、コア６の周面の、帯状ゴム部材
３の供給速度と実質的に等しい周速で回転する所要の巻
回位置に、アプライヤ１０をもって押圧されつつ巻回さ
れる。この場合、コア６は、アプライヤ１０に対する相
対姿勢を、図３に示すように次第に変更することができ
る。The belt-shaped rubber member 3 heated to a required temperature in this manner is then placed on a peripheral surface of the core 6 at a required winding position at a peripheral speed substantially equal to the supply speed of the belt-shaped rubber member 3. Then, it is wound while being pressed by the applier 10. In this case, the relative attitude of the core 6 with respect to the applier 10 can be gradually changed as shown in FIG.
【００３０】ところで、定容積押出機１から押出された
帯状ゴム部材３を、コア６上にこのように巻回するに当
たり、そのゴム部材３の押出し速度に対して、熱ロール
４およびコア６のそれぞれの周速を適宜に調節すること
で、帯状ゴム部材３に所要の大きさの張力を作用させる
こともでき、また、その張力を、帯状ゴム部材３に変形
をもたらす程度の大きさとすることもできる。When the belt-shaped rubber member 3 extruded from the constant volume extruder 1 is wound on the core 6 in this manner, the heat roll 4 and the core 6 By appropriately adjusting the respective peripheral speeds, it is possible to apply a required amount of tension to the belt-shaped rubber member 3, and to set the tension to a magnitude that causes the belt-shaped rubber member 3 to be deformed. Can also.
【００３１】以上のようにして帯状ゴム部材３をコア上
で多数回にわたって積層巻回してタイヤを成型する場
合、従来技術では、加硫モールド内での終了時間がとく
に長くかかるタイヤ内部の構成に寄与する帯状ゴム部材
３の予備加熱温度をそれの他の部分より高く設定するこ
とにより、タイヤ全体としての加硫時間を有効に短縮し
てなお、タイヤ全体の加硫度を十分均一なものとするこ
とができ、このことは、帯状ゴム部材３の長さ方向で、
それに所定の温度差をつけつつその全長にわたって予備
加熱して、成型されたタイヤの全体がある特定温度以上
の温度を有するものとした場合にとくに顕著である。In the case of forming a tire by laminating and winding the belt-shaped rubber member 3 a number of times on the core as described above, the conventional technique requires a particularly long end time in the vulcanization mold. By setting the preheating temperature of the belt-shaped rubber member 3 contributing higher than that of the other portions, the vulcanization time of the entire tire can be effectively reduced, and the degree of vulcanization of the entire tire can be made sufficiently uniform. This means that in the longitudinal direction of the belt-shaped rubber member 3,
This is particularly remarkable when preheating is performed over the entire length of the tire with a predetermined temperature difference so that the entire molded tire has a temperature equal to or higher than a specific temperature.
【００３２】従ってここでは、加硫速度を速めるための
特別のゴム配合を選択する必要なしに、加硫時間の短縮
を実現することができ、しかも、加硫モールドとの接触
部分への過加硫の発生を十分に除去することができる。Therefore, the vulcanization time can be shortened without having to select a special rubber compound for increasing the vulcanization speed, and the excessive vulcanization to the contact portion with the vulcanization mold can be realized. The generation of sulfur can be sufficiently removed.
【００３３】またここでは、タイヤがその全体にわたっ
て所定の加硫度に加硫されることは当然として、帯状ゴ
ム部材３の、前述したような予備加熱における、加熱温
度の調節に基づいて、加硫後のタイヤの構成各部の加硫
度を所要に応じて変化させることもでき、これによれ
ば、同一の帯状ゴム部材３にて構成したタイヤでありな
がら、構成各部のゴム物性を所要に応じて作為的にコン
トロールすることができ、その結果として、製品タイヤ
に、異種のゴム材料の適用なしに、ゴム硬度を漸次変化
させたビードフィラーやタイヤ摩耗時に対応してトレッ
ドゴムの深さ方向に好適な物性を付与する等が可能とな
る。Here, it is natural that the entire tire is vulcanized to a predetermined degree of vulcanization, and the vulcanized rubber member 3 is vulcanized based on the adjustment of the heating temperature in the preheating as described above. The degree of vulcanization of each component of the tire after vulcanization can be changed as necessary. According to this, the rubber physical properties of each component of the tire are required even though the tire is formed of the same belt-shaped rubber member 3. As a result, it is possible to control the tire tread rubber in the depth direction in response to tire filler wear or tire wear with gradually changing rubber hardness without applying different kinds of rubber materials to the product tire. It is possible to impart suitable physical properties to the above.
【００３４】図６は、加熱手段を赤外線照射装置１１に
て構成してなる略線側面図であり、これは、定容積押出
機１の口金２から押出された帯状ゴム部材３の、所定の
平面内での走行を複数本のフリーローラ１２によって案
内するとともに、それらのフリーローラ１２の上側に、
好ましくは、それらのフリーローラ１２、ひいては、そ
の上を走行する帯状ゴム部材３に接近および離反変位可
能に赤外線照射装置１１を配設したものである。FIG. 6 is a schematic side view in which the heating means is constituted by an infrared irradiating device 11, which is a part of the belt-shaped rubber member 3 extruded from the base 2 of the constant volume extruder 1. While traveling in a plane is guided by a plurality of free rollers 12, on the upper side of the free rollers 12,
Preferably, the infrared irradiation device 11 is provided so as to be capable of approaching and separating from the free rollers 12 and further to the belt-shaped rubber member 3 running thereon.
【００３５】この装置での帯状ゴム部材３の予備加熱
は、赤外線照射装置１１の照射量を制御することまた
は、照射をオン・オフ制御することによって行うことが
でき、帯状ゴム部材３の表面を、たとえば２５０〜３５
０℃程度まで加熱することができる。またここで、赤外
線照射装置１１を、帯状ゴム部材３に対して接近もしく
は離反変位させた場合には、帯状ゴム部材３の予備加熱
温度を、それの長さ方向で漸次変化させることができ
る。The preheating of the band-shaped rubber member 3 in this device can be performed by controlling the irradiation amount of the infrared irradiation device 11 or by controlling the irradiation on / off. , For example, 250-35
It can be heated to about 0 ° C. Here, when the infrared irradiation device 11 is displaced toward or away from the band-shaped rubber member 3, the preheating temperature of the band-shaped rubber member 3 can be gradually changed in the length direction thereof.
【００３６】また図７は、加熱手段を、熱ロール４と赤
外線照射装置１１との両者にて構成したものであり、こ
れによれば、熱ロール４と赤外線照射装置１１とのそれ
ぞれによる予備加熱温度の調節を、相互に独立に行わせ
るこで、より広い温度範囲にわたる、よりきめ細かな予
備加熱を行うことができる。FIG. 7 shows a configuration in which the heating means is composed of both the hot roll 4 and the infrared irradiating device 11. According to this, the preliminary heating by each of the hot roll 4 and the infrared irradiating device 11 is performed. By controlling the temperature independently of each other, finer preheating over a wider temperature range can be performed.
【００３７】そして、これらのいずれの加熱手段を用い
る場合であっても、送給される帯状ゴム部材３の所要部
分を所期した通りの温度に予備加熱することで、先に述
べたと同様の効果をもたらすことができる。In any case of using any of these heating means, a required portion of the belt-shaped rubber member 3 to be fed is pre-heated to a desired temperature, thereby obtaining the same as described above. Can bring effects.
【００３８】[0038]
【発明の効果】以上に述べたところから明らかなよう
に、この発明によれば、不測のスコーチの発生を防止
し、製品タイヤに所期したゴム物性を付与し得ることは
もちろん、加硫時間を短縮して加硫能率を向上させると
ともに、タイヤの均一加硫を実現して品質の向上をもた
らすことができ、さらには、同一の帯状ゴム部材を使用
して、タイヤの所要部分のゴム物性を作為的にコントロ
ールすることができる。As is apparent from the above description, according to the present invention, it is possible to prevent the occurrence of unexpected scorch and to impart desired rubber properties to the product tire, as well as the vulcanization time. In addition to improving the vulcanization efficiency by improving the vulcanization efficiency, uniform vulcanization of the tire can be realized and quality can be improved. Can be controlled artificially.
【図１】この発明の実施の形態を示す略線斜視図であ
る。FIG. 1 is a schematic perspective view showing an embodiment of the present invention.
【図２】コアの支持態様を示す略線斜視図である。FIG. 2 is a schematic perspective view showing a support mode of a core.
【図３】コアの姿勢の変更状態を示す説明図である。FIG. 3 is an explanatory diagram showing a change state of a posture of a core.
【図４】フラット成型ドラムの支持態様を示す略線斜視
図である。FIG. 4 is a schematic perspective view showing a support mode of a flat molding drum.
【図５】帯状ゴム部材の温度上昇曲線を示すグラフであ
る。FIG. 5 is a graph showing a temperature rise curve of a belt-shaped rubber member.
【図６】加熱手段の他の形態を示す略線斜視図である。FIG. 6 is a schematic perspective view showing another embodiment of the heating means.
【図７】加熱手段のさらに他の形態を示す略線斜視図で
ある。FIG. 7 is a schematic perspective view showing still another embodiment of the heating means.
１ 定容積押出機 ２ 口金 ３ 帯状ゴム部材 ４ 熱ロール ５ コントローラ ６ コア ７ フラット成型ドラム ８，９ 押圧ローラ １０ アプライヤ １１ 赤外線照射装置 １２ フリーローラ DESCRIPTION OF SYMBOLS 1 Constant-volume extruder 2 Cap 3 Belt-shaped rubber member 4 Heat roll 5 Controller 6 Core 7 Flat molding drum 8, 9 Press roller 10 Applier 11 Infrared irradiation device 12 Free roller
Claims (8)
材を巻回してタイヤを成型する装置であり、 帯状ゴム部材の供給手段と成型型との間に、帯状ゴム部
材の加熱手段を配設してなるタイヤ成型装置。An apparatus for forming a tire by winding a belt-shaped rubber member on a mold that is driven to rotate, wherein a heating means for the belt-shaped rubber member is provided between a supply means for the belt-shaped rubber member and the molding die. Tire molding equipment arranged.
装置により構成してなる請求項１に記載のタイヤ成型装
置。2. The tire molding apparatus according to claim 1, wherein the supply means of the belt-shaped rubber member is constituted by a constant volume extruder.
する外輪郭形状を有するコアにより構成してなる請求項
１もしくは２に記載のタイヤ成型装置。3. The tire molding apparatus according to claim 1, wherein the mold comprises a core having an outer contour shape corresponding to an inner surface shape of the product tire.
それの供給速度とほぼ等しい周速で回転する熱ロールに
より構成してなる請求項１〜３のいずれかに記載のタイ
ヤ成型装置。4. A heating means is brought into contact with the belt-shaped rubber member,
The tire molding apparatus according to any one of claims 1 to 3, wherein the apparatus comprises a heat roll that rotates at a peripheral speed substantially equal to the supply speed thereof.
置する赤外線照射装置により構成してなる請求項１〜３
のいずれかに記載のタイヤ成型装置。5. The heating means is constituted by an infrared irradiation device located opposite to the belt-shaped rubber member.
The tire molding apparatus according to any one of the above.
それの供給速度と等しい周速で回転する熱ロールと、帯
状ゴム部材に対向して位置する赤外線照射装置との両者
で構成してなる請求項１〜３のいずれかに記載のタイヤ
成型装置。6. A heating means is brought into contact with the belt-shaped rubber member,
The tire molding device according to any one of claims 1 to 3, comprising a heat roll rotating at a peripheral speed equal to the supply speed thereof, and an infrared irradiation device located opposite to the belt-shaped rubber member.
て接近および離反可能としてなる請求項５もしくは６に
記載のタイヤ成型装置。7. The tire molding apparatus according to claim 5, wherein the infrared irradiation device can be moved toward and away from the belt-shaped rubber member.
るその帯状ゴム部材を、加熱手段を経て成型型上に巻回
するに当たり、 加熱手段による帯状ゴム部材の加熱温度を、その帯状ゴ
ム部材の巻回位置に応じて変化させることを特徴とする
タイヤ成型方法。8. When the belt-like rubber member fed from the belt-like rubber member supply means is wound on a molding die via the heating means, the heating temperature of the belt-like rubber member by the heating means is determined by the winding temperature of the belt-like rubber member. A tire molding method, wherein the method is changed according to a turning position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09292198A JP3954195B2 (en) | 1998-04-06 | 1998-04-06 | Tire molding apparatus and tire molding method using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09292198A JP3954195B2 (en) | 1998-04-06 | 1998-04-06 | Tire molding apparatus and tire molding method using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11291363A true JPH11291363A (en) | 1999-10-26 |
| JP3954195B2 JP3954195B2 (en) | 2007-08-08 |
Family
ID=14067961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09292198A Expired - Fee Related JP3954195B2 (en) | 1998-04-06 | 1998-04-06 | Tire molding apparatus and tire molding method using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3954195B2 (en) |
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| JP2002532285A (en) * | 1998-12-17 | 2002-10-02 | ピレリ・プネウマティチ・ソチエタ・ペル・アツィオーニ | Method and apparatus for manufacturing parts for automobile wheel tires |
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| JP2005246845A (en) * | 2004-03-05 | 2005-09-15 | Bridgestone Corp | Rubber ribbon winding apparatus |
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| US8113806B2 (en) | 2007-12-21 | 2012-02-14 | The Goodyear Tire & Rubber Company | Apparatus and method for assembling, disassembling and storing a tire building core |
| US8127434B2 (en) | 2007-12-21 | 2012-03-06 | The Goodyear Tire & Rubber Company | Apparatus assembly and disassembly of a tire curing mold |
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| JP2016078459A (en) * | 2014-10-17 | 2016-05-16 | 住友ゴム工業株式会社 | Manufacturing method for pneumatic tire |
| US10487160B2 (en) | 2014-10-17 | 2019-11-26 | Sumitomo Rubber Industries, Ltd. | Rubber composition for pneumatic tires |
| US10836129B2 (en) | 2008-04-23 | 2020-11-17 | Pirelli Tyre S.P.A. | Process and apparatus for building tyres |
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-
1998
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