Method and apparatus for measuring the temperature of molten material in a mold cavity
AssigneeMold-Masters Limited
InventorGeorge Olaru
Life of this patent
Estimating the term…
Abstract
An injection molding apparatus comprises a manifold having a manifold channel for receiving a melt stream of molten material under pressure and delivering the melt stream to a nozzle channel of a nozzle. A mold cavity receives the melt stream from the nozzle and the nozzle channel communicates with the mold cavity through a mold gate. A thermocouple is coupled to the mold core of the mold cavity in order to measure the temperature of the molten material in the mold cavity.
Claims21
An injection molding apparatus comprising:
- a manifold having a manifold channel;
- a mold cavity having a mold core with a melt temperature sensor;
- a nozzle having a nozzle body, a nozzle channel and a nozzle heater, wherein the nozzle channel is in fluid communication with the manifold channel and with the mold cavity through a mold gate;
- and
- a controller electrically coupled to the melt temperature sensor to control the nozzle heater.
An injection molding apparatus comprising:
- a manifold;
- a mold cavity having a mold core and a melt temperature sensor disposed in a hole in a wall of the mold core;
- a nozzle having a nozzle heater that is located in a groove disposed in a body of the nozzle and a nozzle temperature sensor disposed adjacent to a mold gate;
- and
- a controller electrically coupled to the nozzle temperature sensor and the melt temperature sensor to control the nozzle heater.
An injection molding apparatus comprising:
- a manifold;
- a plurality of nozzles each having a nozzle heater;
- at least one mold cavity having a melt temperature sensor disposed adjacent to the mold cavity;
- and
- a controller electrically coupled to the melt temperature sensor to control at least one of the plurality of nozzle heaters.
A method of injection molding comprising the steps of:
- delivering a melt stream of molten material from a manifold channel of a manifold under pressure through a nozzle channel of a nozzle and into a mold cavity;
- measuring the temperature of the molten material in the mold cavity using a melt temperature sensor;
- and
- controlling the temperature of the molten material by adjusting the output of a nozzle heater located on the nozzle based on the measurement of the temperature of the molten material measured by the melt temperature sensor.
Dependencies are inferred from the claim text.