Patent Number: 6,254,377

Title: Manifold system having flow control using extended valve pin

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.

Inventors: Kazmer; David (Amherst, MA), Moss; Mark D. (Boxford, MA)

Assignee: Synventive Molding Solutions, Inc.

International Classification: B29C 45/27 (20060101); B29C 45/28 (20060101); B29C 45/30 (20060101); B29C 45/76 (20060101); B29C 045/23 ()

Expiration Date: 07/03/2018