Method for optical control of an adjustable core pin for vial molding
AssigneeEmpire Level Mfg. Corp.
InventorsJoseph B. Coel, Roger D. Stanford
Life of this patent
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Abstract
An adjustable core pin, and method of use thereof, for molding vials for use in levels, including an elongate rod with a barrel-shaped distal section having a crest at its cross section with the greatest diameter and a rod retainer with a cavity which receives the rod such that the distal end of the rod projects from a rod retainer distal opening, the rod being adjustable in relation to the rod retainer so that the crest can be adjustably placed at a preferred position in a molding cavity for vial molding.
Claims10
A method of forming vials having two ends, a center between the ends and a barrel-shaped cavity with a maximum inner diameter positioned near the center, comprising the steps of:
- providing a mold assembly including a molding cavity;
- providing an adjustable core pin including an elongate rod having a barrel-shaped distal portion having a crest and a rod retainer, the rod and rod retainer being movable relative to each other and fastenable to each other such that the crest can be established at a preferred position;
- inserting the rod into the molding cavity to define a molding space as the volume between the rod and the cavity;
- filling the molding space with moldable material to mold the vial;
- withdrawing the rod from the molding cavity;
- removing the vial from the rod;
- optically measuring the location of the maximum diameter;
- and
- in response to the optical measurement, adjusting the rod and rod retainer to establish the crest at the preferred position;
- whereby the forming of subsequent vials results in more accurate positioning of the maximum diameter.
Dependencies are inferred from the claim text.