Method and device for manufacturing curing bladders
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United States of America Patent
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May 10, 1994
Grant Date -
N/A
app pub date -
Oct 9, 1991
filing date -
Nov 9, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and device for manufacturing curing bladders (2), whereby a curing mold (3) defines, via a first (4) and second (5) half mold and an inner core (6), an inner molding chamber (7) and an outer injection chamber (34) communicating with the inner chamber (7) and consisting of a variable-volume chamber of an injection cylinder (59); the outer chamber (34) being fed 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).
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