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US 7,559,760 B2Granted
Modular injection nozzle having a thermal barrier
AssigneeMold-Masters (2007) Limited
InventorsPayman Tabassi, Hans Hagelstein, Andreas Schrom
Life of this patent
Estimating the term…
Abstract
An injection molding apparatus having a nozzle which includes a first nozzle body segment, a second nozzle body segment, and a thermal barrier coupled between the nozzle body segments. The first nozzle body segment, the thermal barrier, and the second nozzle body segment define a melt channel through the nozzle for delivering a melt stream from a manifold channel of a manifold to a mold cavity. The thermal barrier substantially limits the heat flow from one nozzle body segment to the other, to thereby control the heat distribution along the melt channel.
Claims43
An injection molding apparatus comprising:
- a manifold having a heater and a manifold channel for distributing melt from a manifold inlet to a plurality of manifold outlets;
- a nozzle having a nozzle melt channel, the nozzle coupled to the manifold for receiving the melt from a manifold outlet, wherein the nozzle includes,
- a first nozzle body segment forming a portion of the nozzle melt channel,
- a second nozzle body segment forming a portion of the nozzle melt channel, and
- a thermal barrier segment coupled to and located between the first nozzle body segment and second nozzle body segment, the thermal barrier segment forming a portion of the nozzle melt channel and the thermal barrier being made from a material having a thermal conductivity which is lower than the thermal conductivity of the material of at least one of the first nozzle body segment and the second nozzle body segment;
- and
- a nozzle tip coupled to the downstream end of the second nozzle segment, the nozzle tip for receiving melt from the nozzle melt channel and delivering the melt to a mold cavity.
4 more elements
An injection molding apparatus comprising:
- a manifold having a heater and a manifold melt channel for distributing melt from a manifold inlet to a plurality of manifold outlets;
- a nozzle having a nozzle melt channel, the nozzle being coupled to the manifold for receiving the melt from a manifold outlet, the nozzle including,
- a first nozzle body segment forming a portion of the nozzle melt channel,
- a second nozzle body segment forming a portion of the nozzle melt channel,
- a thermal barrier segment forming a portion of the nozzle melt channel and disposed between the first and second nozzle body segments such that the first nozzle body segment, the second nozzle body segment, and the thermal barrier segment are coupled together along a common axis and the first and second nozzle body segments are completely separated from each other, wherein the thermal barrier segment is made from a material having a lower thermal conductivity than the material of at least one of the first nozzle body segment and the second nozzle body segment, and
- a heater couple to the first and second nozzle body segments;
- and
- a nozzle tip coupled to a downstream end of the second nozzle body segment, the nozzle tip for receiving the melt from the nozzle melt channel and delivering the melt to a mold cavity.
5 more elements
An injection molding apparatus comprising:
- a manifold having a heater and a manifold melt channel for distributing melt from a manifold inlet to a plurality of manifold outlets;
- a nozzle having a nozzle melt channel, the nozzle being coupled to the manifold for receiving the melt from a manifold outlet, the nozzle including,
- a first nozzle body segment forming a portion of the nozzle melt channel,
- a second nozzle body segment forming a portion of the nozzle melt channel,
- a thermal barrier segment forming a portion of the nozzle melt channel, the thermal barrier segment being disposed between and coupled to the first and second nozzle body segments such that the thermal barrier substantially limits heat transfer between the first nozzle body segment and the second nozzle body segment, and
- a heater coupled to the first and second nozzle body segments;
- and
- a nozzle tip coupled to a downstream end of the second nozzle body segment, the nozzle tip for receiving the melt from the nozzle melt channel and delivering the melt to a mold cavity.
5 more elements
Dependencies are inferred from the claim text.