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US 7,189,071 B2Granted
Telescopic manifold nozzle seal
AssigneeMold-Masters Limited
InventorGeorge Olaru
Life of this patent
Estimating the term…
Abstract
An injection molding apparatus including a manifold having a manifold melt channel, a nozzle having a nozzle melt channel, a slidable seal having seal melt channel located between the nozzle and the manifold melt channels, and a biasing element that provides sealing contact between the slidable seal and the manifold and nozzle to maintain a sealed melt path through the manifold, seal and nozzle melt channels.
Claims19
An injection molding apparatus comprising:
- a manifold member having a manifold melt channel for delivering a melt stream of moldable material through an outlet thereof;
- a nozzle member having a nozzle melt channel for delivering the melt stream to a mold cavity;
- a seal located at an interface between the manifold member and the nozzle member, the seal having a seal melt channel communicating at a first end with the manifold melt channel and at a second end with the nozzle melt channel for receiving the melt stream from the manifold melt channel and delivering the melt stream to the nozzle melt channel;
- and
- a biasing element in contact with the nozzle member and the seal to maintain a continuous sealing pressure between the manifold member and the seal independent of injection pressure.
2 more elements
An injection molding apparatus comprising:
- a manifold having a manifold melt channel for receiving a melt stream of moldable material;
- a nozzle having a nozzle melt channel;
- a seal having a seal melt channel located between the nozzle melt channel and the manifold melt channel for delivering melt from said manifold melt channel to said nozzle melt channel;
- and
- a biasing element positioned between said nozzle and said seal that continuously biases said seal against said manifold to provide sealing contact between said seal and said manifold to maintain a sealed melt path between said manifold melt channel and said nozzle melt channel.
2 more elements
An injection molding apparatus comprising:
- a manifold having a manifold melt channel for receiving a melt stream of moldable material;
- a nozzle having a nozzle melt channel and a nozzle head portion;
- a seal having a seal melt channel located between the nozzle melt channel and the manifold melt channel;
- and
- a biasing element that makes a first contact with the nozzle head portion and a second contact with the seal to provide a sealing force between the seal and the manifold.
2 more elements
An injection molding apparatus comprising:
- a manifold having a manifold melt channel for receiving a melt stream of moldable material, the manifold melt channel having an outlet positioned within an annular slot in the manifold;
- a nozzle having a nozzle melt channel for receiving the melt stream from the manifold melt channel;
- and
- a seal including an annular sealing portion having an integral biasing element radially extending therefrom, the biasing element being positioned between the nozzle and the manifold such that an upper end of the annular sealing portion is received within the manifold annular slot and a lower end of the annular sealing portion is slidable within the nozzle melt channel to position a seal melt channel between the manifold channel outlet and the nozzle melt channel, and wherein the biasing element deforms to accommodate movement of the annular sealing portion relative to the nozzle and the manifold.
1 more element
Dependencies are inferred from the claim text.