Method and device for manufacturing tire forming bladders

Details Method and device for manufacturing tire forming bladders Method and device for manufacturing tire forming bladders

1991-10-09

1993-10-26

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Vacuum treatment of work

To degas or prevent gas entrapment

264513, 264265, 2643283, 2643285, 2643288, 264335, 264257, 425 35, 4251291, 425543, 425546, 425557, 425437, 425812, B29C 4502, B29C 4516

Patent

active

052563502

ABSTRACT:
A method and device for manufacturing tire forming bladders (2), whereby a curing mold (3) defines, via first and second half molds (4, 5) and an inner core (6), an inner molding chamber (7) inside which a precured reinforcing ply (72) is optionally inserted; the mold (3) having an outer injection chamber (34) communicating with the inner chamber (7) and consisting of a variable-volume chamber of an injection cylinder (65); the outer chamber (34) being provided with a mass (35) of heated uncured rubber, which is injected into the inner chamber (7) with the mold (3) closed and, when cured, is extracted from the mold (3) by opening the inner chamber (7) and extracting the inner core (6).

REFERENCES:
patent: 3813197 (1974-05-01), Ray et al.
patent: 3892512 (1975-07-01), Diehl
patent: 4124343 (1978-11-01), Makinson et al.
patent: 4462850 (1984-07-01), Fukunaga et al.
patent: 4531902 (1985-07-01), Stuhldreher et al.
patent: 4954074 (1990-09-01), Cohen

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