Duct-segment sealing apparatus for hot or cold runner manifolds

Details Duct-segment sealing apparatus for hot or cold runner manifolds Duct-segment sealing apparatus for hot or cold runner manifolds

B - Operations, Transporting

29

C

B29C 45/27 (2006.01) B29C 45/28 (2006.01)

Patent

CA 2669572

The invention relates to an arrangement for the sealing and/or connecting and/or diverting of channel sections in a hot or cold runner (10), which has at least one flow channel (12) which can be fed with plastified melt, where this channel can be sealed so as to be permeable to fluid by a plug (18) fastened to the runner system and/or is divertible and/or connectable to a further flow channel. In order to provide an improved arrangement for the sealing of channel sections (12a) in a hot or cold runner, each plug on the runner system can be secured in a recess which extends in essence perpendicularly with respect to the channel section to be sealed and which intersects the same. Each plug also has at least one peripheral area (24) which, in the operating state, is in contact with a recess area opposite to said peripheral area, in a manner that prevents permeation of fluid.

L'invention concerne un dispositif pour fermer et/ou relier et/ou dévier des tronçons de canaux dans un répartiteur (10) à canaux chauds ou à canaux froids qui présente au moins un canal d'écoulement (12) pouvant être chargé de masse plastifiée, canal qui peut être, au moyen de bouchons (18) fixés sur le répartiteur, en étanchéité aux fluides, fermé et/ou dévié et/ou relié à un autre canal d'écoulement. Afin de fournir un dispositif amélioré pour fermer des tronçons de canaux (12a) dans un répartiteur à canaux chauds ou à canaux froids, chaque bouchon peut être fixé sur le répartiteur dans un évidement qui s'étend sensiblement perpendiculairement au tronçon de canal à fermer et qui croise ce dernier. Chaque bouchon présente en outre au moins une surface périphérique (24) qui, dans l'état de service, s'applique en étanchéité aux fluides contre une surface de l'évidement qui lui fait face.

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