METHOD FOR MANUFACTURING AIRLESS TIRE

• Main Author: SUGITANI MAKOTO
• Format: Patent
• Language: English; Japanese
• Published: 04.03.2022
• Subjects: PERFORMING OPERATIONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

To provide a method for manufacturing an airless tire which suppresses peeling between a tread ring and a spoke part over a long period of time, and can improve durability.SOLUTION: A method for manufacturing an airless tire 1 including a tread ring 2 that is an annular rubber member, a metal hub 3 arranged inside in a tire radial direction of the tread ring 2, and a spoke part 4 for connecting the tread ring 2 and the hub 3, includes: a step of preparing the tread ring 2 and the hub 3; a step of arranging the hub 3 in a first mold; a step of injecting a first thermoplastic polymer material to the periphery of the hub 3 in the first mold, and molding a spoke composite body obtained by integrally curing the hub 3 and the spoke part 4 therein; a step of taking out the spoke composite body from the first mold, and contracting the spoke part 4; and a step of joining the tread ring 2 to the spoke composite body in which the spoke part 4 has been contracted.SELECTED DRAWING: Figure 1 【課題】トレッドリングとスポーク部との間での剥離を長期に亘って抑制し、耐久性を向上することができるエアレスタイヤの製造方法を提供する。【解決手段】環状のゴム部材であるトレッドリング２と、トレッドリング２のタイヤ半径方向内側に配される金属製のハブ３と、トレッドリング２とハブ３とを連結するスポーク部４とを備えたエアレスタイヤ１の製造方法である。トレッドリング２とハブ３とを準備する工程と、第１金型にハブ３を配置する工程と、第１金型内のハブ３の周囲に、第１熱可塑性高分子材料を射出してハブ３とスポーク部４とが一体硬化したスポーク複合体を成形する工程と、第１金型からスポーク複合体を取り出して、スポーク部４を収縮させる工程と、トレッドリング２と、スポーク部４の収縮を終えたスポーク複合体とを接合する工程とを含む。【選択図】図１