Method and apparatus for changing the rolls of a...

Details Method and apparatus for changing the rolls of a... Method and apparatus for changing the rolls of a...

B - Operations, Transporting

21

B

B21B 31/08 (2006.01) B21C 37/08 (2006.01) B21D 5/12 (2006.01)

Patent

CA 2469192

The invention relates to a method for changing sets of rolls consisting of top rolls, lateral rolls, and a bottom roll, and mounted in chocks of a welding stand of a continuously operating longitudinal tube welding machine. The inventive method enables the rolls to be changed faster, using less appliances. Said method comprises the following steps: the top rolls are lifted; a dismantling/transport means is placed beneath the top rolls; the top rolls are lowered onto the dismantling/transport means and deposited on the same; and, once the top rolls have been removed, the dismantling/transport means is laterally withdrawn.

L'invention concerne un procédé pour remplacer des ensembles de cylindres constitués de cylindres supérieurs, de cylindres latéraux et d'un cylindre inférieur, montés dans des éléments incorporés d'une structure de soudage d'une machine de soudage longitudinal de tubes fonctionnant en continu. Ce procédé permet de remplacer les cylindres de manière rapide et avec un nombre réduit d'appareils. Il comprend les étapes suivantes : levage des cylindres supérieurs ; insertion d'un moyen de démontage/transport sous les cylindres supérieurs ; abaissement et installation des cylindres supérieurs sur le moyen de démontage/transport ; installation des cylindres latéraux et du cylindre inférieur sur le moyen de démontage/transport ; et, après libération des cylindres supérieurs, sortie, de manière latérale, du moyen de démontage/transport.

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