| 摘要 |
PROBLEM TO BE SOLVED: To provide a transfer drum of a belt-shaped rubber material which can effectively prevent defective suction in relation to the change in the width direction of a material and defective supply to a tire molding drum and improve the reliability of suction by a drum main body. SOLUTION: A cylindrical pressure chamber 17 communicating with a suction passage 16 formed in the longitudinal direction in a rotary support shaft 5 is formed in a part of the periphery of the shaft 5 in the drum main body, and communication holes 18 communicating with each divided hollow chamber 14 are formed in the side wall surface of the pressure chamber 17. Change-over valves 19 which open/close the holes 18 are attached to the holes 18. The valves 19 are closed usually and, when the rubber material which is not given in Fig is sucked/held, opened by an opening/closing cylinder 21b through a rod 20, and the accumulated suction force of the pressure chamber 17 is applied to each hollow chamber 14.
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