Plastic bottle forming machine
AssigneeEmhart Industries, Inc.
InventorRobert Spurr
Life of this patent
Estimating the term…
Abstract
A plastic bottle forming machine and process wherein a parison is formed in a parison mold utilizing a neck ring and a core rod, and after the core rod has been removed and the parison mold opened, the neck ring is rotated, carrying the parison into alignment with a blow mold. The blow mold is closed and utilizing a blow head the parison is blown to the desired configuration. The blow mold and the parison mold are split molds with halves carried by a pair of relatively movable platens. There is one neck ring for each parison and blow mold with the neck rings being oscillated 180.degree. upon each actuation of the machine and, upon each actuation of the machine, a parison is formed and a previously formed parison is blow molded.
Claims19
A hollow article molding machine comprising a split parison mold;
- core rod means for removable insertion into said parison mold to form a parison cavity;
- means for injecting a moldable material into said parison cavity;
- blow mold means;
- blow head means for removable engagement with said blow mold;
- means for moving said core rod means into and out of said parison mold;
- means for moving said blow head means into and out of engagement with said blow mold;
- a pair of split neck rings;
- a support carrying said neck rings;
- means for moving said neck ring support for alternating cooperation of said neck rings with said parison mold and said blow mold and for transferring a molded parison from said parison mold to said blow mold;
- a first platen carrying at least one parison mold half and at least one blow mold half in side-by-side relation;
- a second platen carrying the other parison mold half and the other blow mold half in mirror image side-by-side relation;
- means mounting said platens for relative movement to open and close said molds in unison;
- and mounting means positioned between said platens mounting said core rod means;
- blow head means;
- and means for moving core rod means and blow head means.
Dependencies are inferred from the claim text.