TIRE MOLDING RIGID CORE

• Main Author: OBARA KEI
• Format: Patent
• Language: English; Japanese
• Published: 28.09.2015
• 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

PROBLEM TO BE SOLVED: To suppress the formation of a step in a radial direction between core segments resulting from thermal expansion while suppressing rubber bite-in between the core segments.SOLUTION: A core main body 2 is divided into a first core segment 5A which inclines to a direction in which a circumferential width of a circumferential both-end face 5As is increased toward the inside of a radial direction, a second core segment 5B which inclines to a direction in which a circumferential width of a circumferential both-end face 5Bs is decreased toward the inside of the radial direction, and is alternately arranged with respect to the core segment 5A, and a butt member 6 which is arranged between the segments. A Young's modulus Ea of the butt member is smaller than Young's moduli Eb of the first and second core segments 5A, 5B. 【課題】中子セグメント間のゴム噛みを抑えながら、熱膨張に起因する中子セグメント間の半径方向の段差の発生を抑制する。【解決手段】中子本体２は、周方向両端面５Ａｓが半径方向内方に向かって周方向巾が増す向きに傾斜する第１の中子セグメント５Ａと、周方向両端面５Ｂｓが半径方向内方に向かって周方向巾が減じる向きに傾斜しかつ前記中子セグメント５Ａとは交互に配される第２の中子セグメント５Ｂと、その間に配される突き合わせ部材６とに分割される。突き合わせ部材のヤング率Ｅａは、第１、第２の中子セグメント５Ａ、５Ｂのヤング率Ｅｂよりも小である。【選択図】図２