Dynamic feed control system
AssigneeSynventive Molding Solutions, Inc.
InventorsDavid Kazmer, Mark D. Moss, Mark Doyle
Life of this patent
Estimating the term…
Abstract
An injection molding apparatus and system are provided in which the rate of material flow during the injection cycle is controlled. According to one preferred embodiment, an injection molding system is provided that includes an injection molding machine including a hydraulic power source, a manifold for distributing material injected from said injection molding machine to a plurality of gates leading to one or more mold cavities, and a controller to individually control respective rates at which material is injected through said gates during an injection cycle. The controller is coupled to the hydraulic power source and the hydraulic power source supplies hydraulic power to both the injection molding machine and to control said respective rates.
Claims17
An injection molding system comprising:
- an injection molding machine;
- a manifold for distributing material injected from a plurality of nozzles of said injection molding machine to a plurality of gates leading to one or more mold cavities;
- a controller to individually control respective rates at which material is injected through said gates during an injection cycle;
- and
- a position transducer coupled to a screw of said injection molding machine, wherein said controller receives position data of said screw from said position transducer.
An injection molding system comprising:
- an injection molding machine;
- a hot runner including a manifold and a plurality of injection nozzles for distributing material injected from said injection molding machine to a plurality of gates leading to one or more mold cavities;
- a controller to individually control respective rates at which material is injected through said gates during an injection cycle;
- at least one pressure transducer mounted in the one or more cavities, the pressure transducer coupled to the controller to send pressure data to the controller, wherein the controller alters the at least one respective rate from an injection pressure to a pack pressure when the pressure transducer detects a predetermined pressure value, wherein control of each rate is based on a sensed condition related to the rate of material flow through each gate, each sensed condition being sensed at location in said hot runner;
- and
- additional of pressure transducers coupled to said hot runner for sensing said sensed conditions, each pressure transducer being associated with one of said gates.
An injection molding system comprising:
- an injection molding machine;
- a hot runner including a manifold and a plurality of injection nozzles for distributing material injected from said injection molding machine to a plurality of gates leading to one or more mold cavities;
- a controller to individually control respective rates at which material is injected through said gates during an injection cycle;
- and
- at least one pressure transducer mounted in the one or more cavities, the pressure transducer coupled to the controller to send pressure data to the controller, wherein the controller determines an end of the pack period of the injection cycle for at least one respective rate when the pressure transducer detects a predetermined pressure value.
An injection molding system comprising:
- an injection molding machine;
- a hot runner including a manifold and a plurality of injection nozzles for distributing material injected from said injection molding machine to a plurality of gates leading to one or more mold cavities;
- a plurality of pressure transducers coupled to said hot runner for sensing material pressure flowing to said gates;
- at least one additional pressure transducer mounted in the one or more cavities, the at least one additional pressure transducer to sense the material pressure inside the one or more cavities;
- and a controller to which the plurality of pressure transducers and the at least one pressure transducer are coupled, the controller controlling a rate of material flow through each gate based on pressure readings from the plurality of pressure transducers and the at least one additional pressure transducer.
Dependencies are inferred from the claim text.