Injection molding system with flow control
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Aug 26, 2004
app pub date -
Feb 25, 2004
filing date -
Feb 25, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An injection molding system includes a manifold and a valve gated hot runner nozzle. The gating mechanism includes an actuated valve pin, where the mold gate orifice is open when the valve pin is in a first position to allow melt to flow there through. The mold gate orifice is closed when the valve pin is in a second position to prevent melt from flowing there through. A first flow control surface is disposed on said valve pin within the melt channel of the nozzle. The first flow control surface has a complementary geometry with that of the melt channel at a second flow control surface. The valve pin is raised and lowered to a lesser degree than that required to seat and unseat the valve pin head to constrict or release the flow of a melt stream in the melt channel.
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