PNEUMATIC TIRE MANUFACTURING METHOD AND SEPARATION DEVICE

• Main Authors: YAGUCHI AKIRA, OBARA KEI
• Format: Patent
• Language: English; Japanese
• Published: 02.08.2018
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To improve the removability of a rigid core by separating a vulcanized tire from the tightly-fitted rigid core.SOLUTION: Provided is a separation step which includes an airtight space forming stage and an inflating stage. In the airtight space forming stage, formed on an exposed face of a rigid core with a vulcanized tire is a cyclic airtight space extended in a tire circumferential direction by surrounding an intersection part between an outer surface of the vulcanized tire and an outer surface of the rigid core. In the inflating stage, high-pressure air is supplied into the airtight space for inflating the vulcanized tire on the rigid core by the high-pressure air flowing in from the intersection part so as to separate the vulcanized tire from the rigid core.SELECTED DRAWING: Figure 1 【課題】 加硫タイヤを密着する剛性中子から剥がして剛性中子の取り外し性を向上させる。【解決手段】 気密空間形成段階と、膨張段階とを含む剥離工程を具える。気密空間形成段階は、加硫タイヤ付き剛性中子の露出面上に、加硫タイヤの外表面と剛性中子の外表面との交わり部を囲んでタイヤ周方向にのびる環状の気密空間を形成する。膨張段階は、気密空間内に高圧空気を供給し、交わり部から流入する高圧空気により前記剛性中子上で加硫タイヤを膨張させることにより、加硫タイヤを剛性中子から剥離させる。【選択図】図１