Blow molding machine
AssigneeContinental Can Company, Inc.
InventorRobert G. Nutting
Life of this patent
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Abstract
This disclosure relates to an apparatus for blow molding articles of the type having a plurality of split mold moving along a continuous path in which pairs of mold bodies define a mold chamber in which an extruded parison is inflated to a desired configuration, the improvement being the formation of each mold body in the form of first and second relatively slidable mold sections operable through cam follower and linkage means for sliding the sections relative to each other for increasing the predetermined configuration of the mold chamber to facilitate the release of the blown articles as well as scrap from the mold chambers.
Claims15
Apparatus for blow molding articles comprising a plurality of molds, means for moving said molds along a continuous path of travel, each mold being defined by a pair of mold bodies which define a mold chamber of a predetermined configuration, means for relatively moving each pair of mold bodies between open and closed positions thereof, means for extruding a tubular parison between each pair of mold bodies while in the open position thereof, means for expanding each tubular parison to the configuration of its associated chamber when the mold bodies are in their closed position, each mold being defined by first and second mold sections, means coupling each first and second mold section for movement relative to each other, means for imparting movement to one of said first and second mold sections of each pair of mold bodies to increase the size of said mold chamber thereby facilitating the discharge of the blown parisons therefrom, and said movement imparting means successively moves a first of said mold sections relative to its associated second mold section of a first of said mold bodies while said mold bodies are in their closed position, thereafter moving said mold bodies away from each other, and thereafter moving a first of said mold sections relative to its associated second mold section of a second of said mold bodies.
Dependencies are inferred from the claim text.