To provide a tread rubber molding apparatus and a tread rubber molding method capable of reducing setups involving replacement of extrusion molding dies.SOLUTION: There is provided a tread rubber molding apparatus in which rubber materials supplied from a plurality of extruders are integrated and discharged by extrusion molding dies, wherein the extrusion molding dies are each configured to introduce a conductive rubber material to be a through rubber 13 at a first position P1 exposed to a tire ground contact surface at a point separated from a tread centerline TC to one side in the width direction and a second position P2 exposed to a tire ground contact surface at a point separated from a tread centerline TC to the other side in the width direction, a distance D1 from the exposed position of the through rubber 13 formed at the first position P1 to the tread centerline TC and a distance D2 from the exposed position of the through rubber 13 formed at the second position P2 to the tread centerline TC are each 15.0 mm or less, and the distance D1 differs from the distance D2.SELECTED DRAWING: Figure 1
【課題】押出成形ダイの交換を伴う段取り替えの削減を可能にしたトレッドゴム成形装置及びトレッドゴム成形方法を提供する。【解決手段】複数の押出機から供給されたゴム材料を押出成形ダイで一体化して吐出するトレッドゴム成形装置において、前記押出成形ダイは、トレッド中央線TCから幅方向一方側に離隔した箇所でタイヤ接地面に露出する第1の位置P1と、トレッド中央線TCから幅方向他方側に離隔した箇所でタイヤ接地面に露出する第2の位置P2とに、それぞれ貫通ゴム13となる導電性ゴム材料を導入可能に構成され、第1の位置P1に形成される貫通ゴム13の露出位置からトレッド中央線TCまでの距離D1、及び、第2の位置P2に形成される貫通ゴム13の露出位置からトレッド中央線TCまでの距離D2が、それぞれ15.0mm以下であり、且つ、距離D1が距離D2と相違する。【選択図】図1
TREAD RUBBER MOLDING APPARATUS AND TREAD RUBBER MOLDING METHOD
トレッドゴム成形装置及びトレッドゴム成形方法
2024-08-01
Patent
Electronic Resource
Japanese
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