Apparatus for positioning and curing a pre-shaped tire carcass

Details Apparatus for positioning and curing a pre-shaped tire carcass Apparatus for positioning and curing a pre-shaped tire carcass

1978-07-19

1980-02-26

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Reshaping, resizing or vulcanizing means for tire, tire...

Toroidal or annular female shaping means and coacting means...

425 33, 425 36, B29H 502

Patent

active

041904060

ABSTRACT:
Apparatus for positioning a partially shaped, uncured tire carcass and a tire curing bladder of a lower half-section of a vulcanization mold relative to one another, is disclosed. The apparatus includes the lower half-section of a vulcanization mold from which an inflatable, tire curing bladder extends axially upwardly, the bladder being axially and radially expansible and contractible. A bladder-controlling piston rod is associated with the lower half-section and is used to axially elongate the bladder and thereby radially contract the latter. A circumferentially expansible-contractible tire carcass transporter is associated with the lower half-section and is effective to position a generally toroidally shaped, uncured tire carcass concentrically around the bladder, with the lower bead of the tire in contact with the upper inner surface of the lower half-section. A downwardly projecting cylinder and piston rod assembly is carried concentrically in and by the tire carcass transporter. The piston rod thereof when protracted is axially engageable with the aforementioned bladder-controlling piston rod to cause the latter to retract and thereby radially swell and fit the bladder into the interior of the uncured tire carcass. Steam injected into the bladder is used to assist the swelling of the latter, and subsequently to in part cure the tire carcass after it is released by the transporter and covered by an upper half-section of the mold.

REFERENCES:
patent: 2997738 (1961-08-01), Soderquist
patent: 3229329 (1966-01-01), Heston et al.
patent: 3380115 (1968-04-01), Soderquist
patent: 3471895 (1969-10-01), Ulm et al.
patent: 3564649 (1971-02-01), Soderquist
patent: 3640653 (1972-02-01), Laenen et al.
patent: 4025251 (1977-05-01), Contarutti

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