Device and method for removal of preforms
AssigneeGraham Packaging Company, L.P.
InventorsPhilip Sheets, James Dunman
Life of this patent
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Abstract
A device for fracturing a defective preform for use in blowmolding is claimed. The preform has head end and a tail end and the device comprises a tube with walls defining a cavity for accepting the defective preform while the defective preform is on a core of an injection molding apparatus, an attachment element that attaches the tube to the injection molding apparatus, and locates the tube relative to the core; and a percussion instrument that contacts and breaks the defective preform at the tail end of the preform.
Claims15
1) A device for fracturing a defective preform for use in blowmolding, the preform having a head end and a tail end;
- the device comprising:
- a tube with walls defining a cavity for accepting the defective preform while the defective preform is on a core of an injection molding apparatus;
- an attachment element that attaches the tube to the injection molding apparatus, the attachment element locating the tube relative to the core;
- and
- a percussion instrument for contacting and breaking the defective preform at the tail end of the preform.
11) A method for removal of a defective preform from an injection molding apparatus, the method comprising:
- attaching a tube of a preform fracturing device to the injection molding apparatus via an attachment element of the preform fracturing device, the tube being adapted to fit over the defective preform when the preform is on a core of the injection molding apparatus;
- and
- driving a percussion instrument located at least partially within the tube into contact with the preform and fracturing the defective preform.
Dependencies are inferred from the claim text.