Device for charging injection molding and extruding machines and having a funnel provided with pins passing through clearances in a feed worm
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United States of America Patent
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Nov 26, 1996
Grant Date -
N/A
app pub date -
Jun 14, 1995
filing date -
Jun 16, 1994
priority date (Note) -
In Force
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Abstract
The problem of insufficient friction along the wall of a rotating funnel feeding viscous material to an extruder or injection molding machine so that the material sweeps past the conveying screw and prevents the conveying screw from continuously feeding that mass to the outlet of the funnel, is solved by providing pins which project inwardly from the rotating funnel wall and engage in interruptions in the flight of the conveying screw. The funnel wall can also be provided with pockets or grooves.
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