Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – Mold having movable core or movable pin
Patent
1976-05-25
1978-08-15
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
Mold having movable core or movable pin
425 36, 425 56, 425542, B29H 502, B29F 100
Patent
active
041068882
ABSTRACT:
A mold is provided for injection molding a vehicle tire such as the one disclosed in U.S. Pat. No. 3,805,868 having a bead of elastomeric material. The mold has an outer envelope and an inner body member having a core formed of radially collapsible sectors which combine to enclose a mold cavity. The inner body member has at least two annular elements, an upper and lower one, which are separable from one another and from the core along the direction of the core axis. The annular elements have surfaces which form axially inner surfaces of the tire's beads. The inner body member is also provided with members for blocking the annular elements with the core and with the envelope. The core of the mold is divided into two series of alternate collapsible sectors which are displaced radially inwardly when the tire is released from the mold.
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Flint, Jr. J. Howard
Industrie Pirelli S.p.A.
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