Small pitch molding manifold
AssigneeMold-Masters Limited
InventorDenis Babin
Life of this patent
Estimating the term…
Abstract
An injection molding apparatus for small pitch molding includes a plurality of mold cavities having a small pitch therebetween. The injection molding apparatus includes a manifold for delivering melt to a sub-manifold. The sub-manifold including at least one upstream manifold plate and a downstream nozzle plate. The upstream manifold plate and/or the nozzle plate includes a heater. At least one unheated nozzle is mounted in the downstream nozzle plate for receiving melt from the sub-manifold and delivering the melt to a mold cavity.
Claims22
An injection molding apparatus comprising:
- a main manifold having a manifold melt channel that includes a manifold inlet and a plurality of manifold outlets, wherein said manifold inlet is in fluid communication with a melt source;
- a sub-manifold including a sub-manifold plate, a plurality of sub-manifold melt channels and a nozzle plate coupled to said sub-manifold plate, wherein said sub-manifold melt channels include a common inlet in fluid communication with a respective manifold outlet;
- and
- a plurality of unheated nozzles, wherein each nozzle includes a nozzle melt channel that has a nozzle inlet,
- wherein said nozzle plate is configured to directly retain said nozzles such that said nozzle inlets are in fluid communication with respective sub-manifold melt channel outlets, and wherein said nozzle plate does not form part of a sub-manifold melt channel.
An injection molding apparatus comprising:
- a main manifold having a manifold melt channel that includes a manifold inlet and a plurality of manifold outlets, wherein said manifold inlet is in fluid communication with a melt source;
- a sub-manifold including a sub-manifold plate, a plurality of sub-manifold melt channels and a nozzle plate, wherein said sub-manifold melt channels include a common inlet in fluid communication with a respective manifold outlet, and the nozzle plate includes a plurality of nozzle bores;
- and
- a plurality of nozzles each received within a respective one of the nozzle bores of the nozzle plate, wherein each nozzle includes a nozzle melt channel that has a nozzle inlet,
- wherein the nozzle plates are each configured to retain said nozzles such that said nozzle inlets are in fluid communication with respective sub-manifold melt channel outlets, and wherein an upstream portion of each nozzle abuts said sub-manifold plate.
An injection molding apparatus comprising:
- a main manifold having a manifold melt channel that includes a manifold inlet and a plurality of manifold outlets, wherein said manifold inlet is in fluid communication with a melt source;
- a sub-manifold including a sub-manifold plate, a plurality of sub-manifold melt channels and a nozzle plate coupled to said sub-manifold plate, wherein said sub-manifold melt channels include a common inlet in fluid communication with a manifold outlet;
- and
- a plurality of nozzles, wherein each nozzle includes a nozzle melt channel that has a nozzle inlet;
- wherein said nozzle plate is configured to directly retain said nozzles such that said nozzle inlets are in fluid communication with respective sub-manifold melt channel outlets, and wherein said nozzles are distributed about said nozzle plate unevenly with respect to said common inlet of said sub-manifold melt channels, and wherein said nozzle plate does not form part of a sub-manifold melt channel.
Dependencies are inferred from the claim text.