B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/161
B29C 33/46 (2006.01) B29C 33/10 (2006.01) B29C 43/36 (2006.01) B29C 43/56 (2006.01) B29D 30/06 (2006.01)
Patent
CA 2018685
Detaching a cured tire from mold sections of a tire mold during opening of the mold by communicating air under pressure into the space between the mold sections and confining the air in this space with a sleeve member supported on the upper mold section and slidably urged into sealing engagement with the lower mold section. Air under pressure is then communicated from the space between the mold sections to the spaces between the cured tire surface and the molding surfaces of the upper and lower mold sections to detach the tire. Sealing rings on the sleeve and on the upper mold section prevent leakage of the air under pressure from the space between the mold section. Spring means between the upper mold section and the sleeve member provide extension of the sleeve member into sealing engagement with the lower mold section.
Cette invention concerne une méthode de démoulage d'un pneu vulcanisé à l'ouverture d'un moule en deux coquilles par injection et confinement d'air comprimé dans l'espace entre lesdites coquilles, le confinement étant réalisé au moyen d'un manchon porté par la coquille supérieure et glissé dans la coquille inférieure de manière à former un joint étanche. L'air comprimé est par la suite admis de l'espace entre les coquilles à l'espace entre le pneumatique et les surfaces de moulage des deux dites coquilles. Des bagues d'étanchéité prévues sur le manchon et la coquille supérieure du moule empêchent les fuites d'air comprimé de l'espace entre les coquilles. Un ressort ménagé entre la coquille supérieure et le manchon force celui-ci en contact étanche avec la coquille inférieure.
Sim & Mcburney
The Goodyear Tire & Rubber Company
LandOfFree
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