Injection molding apparatus

Details Injection molding apparatus Injection molding apparatus

B - Operations, Transporting

29

C

18/698

B29C 45/53 (2006.01) B29C 45/18 (2006.01)

Patent

CA 1277816

Abstract of the Disclosure Injection molding apparatus (10) for processing and transferring molding material from a feed mechanism (30) to a nozzle (75) for discharging into a mold including a bolster (12), an injection head (11) extending through the bolster, an injection barrel (37) in the injection head for containing a predetermined sized shot of the molding mater- ial, a plunger (46) movable in the injection barrel for discharging the shot of molding material into the mold, a bore (47) extending longitudinally of the plunger for loading molding material into the barrel, feed mechanism (30) supplying molding material to the bore of the plunger irrespective of the position of the plunger, and a valve (60) closing the bore upon movement of the plunger in one direction for discharging the shot of molding material and opening the bore upon movement of the plunger in the other direction for discharging the barrel with a predetermined shot of molding material. The apparatus may include an auxiliary mechanism (90) for supporting the feed mechanism at a location displaced from the plunger to maintain the feed mechanism substantially perpendicular to the direction of movement of the plunger.

548090

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