Manifold plug for an injection molding apparatus

Details Manifold plug for an injection molding apparatus Manifold plug for an injection molding apparatus

B - Operations, Transporting

29

C

B29C 45/28 (2006.01)

Patent

CA 2523636

An injection molding apparatus includes a manifold having a manifold channel for receiving a melt stream of moldable material under pressure and delivering the melt stream to a nozzle channel of a nozzle. The manifold includes a manifold plug fit within a bore thereof and having a plug melt channel for fluidly connecting the manifold melt channel and the nozzle melt channel. The manifold plug further includes a valve/pressure disk portion that abuts with a back plate of the injection molding apparatus to maintain the spacing therebetween and to accommodate thermal expansion of the manifold relative to the back plate. In an injection molding application utilizing a valve-gated nozzle, the manifold plug may further include a valve pin receiving/guiding bore that functions as a valve pin bushing for a valve pin. A mold cavity communicates with the nozzle channel of the nozzle to receive melt through a mold gate.

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