LAMINATED RUBBER SUPPORT DEVICE AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To stabilize the quality of a laminated rubber by uniform vulcanization while uniformly distributing internal pressure, and prevent the occurrence of trapped air in the rubber and make stably maintainable designated performance for a long time without forming defective portions such as a dent etc. on the outer periphery of a laminated rubber body. SOLUTION: A plurality of elastic rubber layers 1 and multiple numbers of rigid plates 2 are alternately laminated. Among forming molds 14 used for vulcanized forming of the laminated rubber body 3 which is coated by cylindrical weather-proofed rubber 5 on the outer periphery, a through-hole 6 having a hole portion 6a with a conical end integrally projecting a conical projection having greater diameter toward its root on the outer periphery of vulcanized laminated rubber body 3 is formed on a plurality of places setting apart in a peripheral direction of a peripheral wall portion corresponding to a center position of each elastic rubber layer 1 in an intermediate mold 13. COPYRIGHT: (C)2004,JPO