B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/190
B29C 35/04 (2006.01) B29C 35/02 (2006.01) B29D 30/06 (2006.01)
Patent
CA 1227308
ABSTRACT In order to vulcanise pneumatic tires, the tire blanks are installed in presses provided with vulcanising moulds and brought to a temperature that results in the vulcanising of the tire blank, this being done for a specific time by means of a heating medium. To avoid the use of vulcanising times that are fixed (and, for this reason, have to be much longer than necessary) the amount of heat applied to the tire blank in each instance is determined, and the vulcanising process ended as soon as the total amount of heat required for vulcanising is reached. To this end, at intervals the temperature on the vulcanising mould, at the heating medium lines for the hollow space of the tire blank, and the initial temperature of the tire blank are measured, and from this, on the basis of temperature curves established by test heating that are characteristic for the particular vulcanising process--for example, by process control computer-- the amount of heat applied to the tire blank is measured and the heating time monitored on the basis of this. Variously configured vulcanising moulds can be used, e. g. with or without a bladder, in particular vulcanising moulds that are divided at the centre with upper and lower halves, or vulcanising moulds made up of mould segments and mould side elements.
456095
Dette Karl-Henning
Koster Lothar
Luscalu Romeo
Rummler Karl-Heinz
Sievers Willi
Continental Gummi-Werke Aktiengesellschaft
Fetherstonhaugh & Co.
Krupp (fried.) Gesellschaft Mit Beschrankter Haftung
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