A unit for actuating the rod of a closure element in a mould...

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 45/28 (2006.01)

Patent

CA 2374868

The actuating unit comprises a piston element (21) slidable in a cylinder element (20) and connectable to a closure rod (16) slidable in an injection duct (14) between an extended position in which it blocks an injection hole (15) and an injection position in which it is retracted into the injection duct. The piston element (21) has an engagement seat (46, 47) which can house a head end portion (16a) of the rod (16). The engagement seat is shaped so as to allow the piston element (21) to be translated transversely relative to the axial direction of movement of the rod (16) in order to release the piston element (21) from the rod.

Le dispositif actionneur comprend un élément de piston (21) qui coulisse dans un élément de cylindre (20) et qui peut être relié à une tige de fermeture (16) coulissant dans une buse d'injection (14) entre une position sortie dans laquelle elle obture un trou d'injection (15) et une position d'injection correspondant à la position de rappel de ladite tige (15) dans la buse d'injection. L'élément de piston (21) comporte un siège d'engagement (46, 47) qui peut recevoir l'extrémité tête (16a) de la tige (16). Ce siège présente une forme telle que l'élément de piston (21) peut être déporté transversalement par rapport au déplacement axial de la tige (16) et se désolidariser de ladite tige.

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