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US 7,410,354 B2Granted
Valve gated nozzle having a valve pin with a sensor
AssigneeMold-Masters (2007) Limited
InventorGeorge Olaru
Life of this patent
Estimating the term…
Abstract
An injection molding apparatus includes a manifold for delivering a melt stream of moldable material to a nozzle melt channel of a nozzle. A valve pin extends through the nozzle melt channel and is axially movable to selectively open a gate to allow communication with a mold cavity. A sensor is coupled to a forward end of the valve pin. The sensor may be a pressure sensor and/or temperature sensor in direct contact with the melt stream to provide pressure and/or temperature information to a controller.
Claims25
An injection molding apparatus comprising:
- a manifold including a first manifold melt channel for delivering a first melt material and a second manifold melt channel for delivering a second melt material;
- an injection molding nozzle having a first melt channel for receiving the first melt material from the first manifold melt channel and having a second melt channel for receiving the second melt material from the second manifold melt channel;
- a valve pin having a valve pin body with a segment that slidably extends through the first melt channel of the nozzle, the valve pin being axially movable for controlling the flow of the first and second melt materials;
- a processing sensor coupled to and positioned at least partially within the segment of the valve pin body that extends within the first melt channel;
- and
- a mold cavity in fluid communication with the nozzle via a respective mold gate, wherein the valve pin has a downstream end portion for selectively opening and closing the mold gate.
3 more elements
An injection molding apparatus comprising:
- an injection molding nozzle having a first melt channel for receiving a first melt material from a first melt source and having a second melt channel for receiving a second melt material from a second melt source;
- a valve pin having a body segment that slidably extends within the first melt channel of the nozzle, the body segment including a downstream end portion of the valve pin being axially movable for controlling the flow of the first and second melt materials;
- a pressure sensor coupled to and disposed at least partially within the body segment of the valve pin;
- and
- a mold cavity in fluid communication with the nozzle via a respective mold gate, wherein the valve pin end portion is selectively positionable for opening and closing the mold gate.
2 more elements
Dependencies are inferred from the claim text.