Apparatus for producing pneumatic tires

Details Apparatus for producing pneumatic tires Apparatus for producing pneumatic tires

1980-10-15

1981-09-01

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

425129R, 425542, 425 54, B29H 308, B29H 506, B29F 100, B29H 518

Patent

active

042869420

ABSTRACT:
A cavity having the shape of the tire to be produced is defined by a mold comprising an upper element, a lower element and a core element which are fittable to and releasable from one another. The core mold element comprises three divided segments, i.e., a segment for forming the inner surface of the tire tread, and a pair of segments for forming the inner surfaces of the tire sidewalls including tire beads. The core mold element has two pairs of nipping portions for holding the opposite ends of tire cords placed on the tread inner surface forming segment. The nipping portions in each pair are movable toward or away from each other. The tire cords nipped at their opposite ends by the core mold element are held in place within the cavity by the cooperation of the upper and lower mold elements, and a molding material composed of rubber or an equivalently elastic material is filled into the cavity and cured.

REFERENCES:
patent: 3123122 (1964-03-01), Beckadolph
patent: 3457594 (1969-07-01), Baudou
patent: 3837986 (1974-09-01), Gorter et al.
patent: 4057446 (1977-11-01), Goodfellow
patent: 4059375 (1977-11-01), Kock et al.

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