Manifold system having flow control using extended valve pin
AssigneeSynventive Molding Solutions, Inc.
InventorsDavid Kazmer, Mark D. Moss
Life of this patent
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Abstract
An injection molding apparatus is provided in which the rate of material flow during an injection cycle is controlled. According to one preferred embodiment, an injection molding apparatus is provided that includes a manifold having an inlet for receiving material from an injection molding machine, at least one injection nozzle coupled to the manifold, an actuator, and a valve pin adapted to reciprocate through the manifold and the injection nozzle, the valve pin having a first end coupled to the actuator, a second end that closes the gate in a forward position, and a control surface intermediate said first and second ends for adjusting a rate of material flow during an injection cycle.
Claims21
An injection molding apparatus comprising:
- a manifold having an inlet for receiving material from an injection molding machine;
- at least one injection nozzle coupled to the manifold;
- an actuator;
- and a valve pin adapted to reciprocate through the manifold and the injection nozzle, the valve pin having a first end coupled to the actuator, a second end that closes the gate in a forward position, and a control surface intermediate said first and second ends for adjusting a rate of material flow during an injection cycle, wherein the control surface forms a gap with a surface of the manifold.
An injection molding apparatus comprising:
- a manifold having an inlet for receiving material from an injection molding machine;
- at least one injection nozzle coupled to the manifold;
- an actuator;
- and
- a valve pin adapted to reciprocate through the manifold and the injection nozzle, the valve pin having a first end coupled to the actuator, a second end that closes the gate in a forward position, and a control surface intermediate said first and second ends for adjusting a rate of material flow during an injection cycle, wherein the valve pin includes a section having a uniform cross-section that extends from the control surface to the second end.
Dependencies are inferred from the claim text.