Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Positioning of a mold part to form a cavity or controlling...
Patent
1997-04-18
1999-07-27
Davis, Robert
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Positioning of a mold part to form a cavity or controlling...
264509, 264541, 425145, 425172, 425532, 425466, B29C 4904, B29C 4952, B29C 4978
Patent
active
059285818
ABSTRACT:
In a blow-molding system in which a parison programmer is coupled to orifice tooling in an extrusion die head for controlling wall thickness of an extruded parison fed to a blow-molding apparatus, a method of synchronizing operation of the parison programmer contemplates placement of observable indicia on the parison after the parison exits the die head. This indicia placement preferably is carried out under control of the parison programmer to place the indicia at a predetermined position along the parison profile, such that mis-positioning of the indicia indicates absence of phase synchronization of the parison programmer. The indicia is then observed on a molded article to determine phasing of the parison programmer relative to the molding apparatus, and operation of the parison programmer is adjusted to correct any mis-positioning. In the preferred implementation of the invention, the readable indicia comprises an optically readable spot or dot, and position of this spot or dot on the molded article is determined by an optical sensor that provides an electrical signal for automatic closed-loop correction of parison programmer phasing without operator intervention.
REFERENCES:
patent: 3368241 (1968-02-01), Williams
patent: 3629382 (1971-12-01), Fogelberg et al.
patent: 4444702 (1984-04-01), Thomas et al.
patent: 4523904 (1985-06-01), Martin
patent: 5102588 (1992-04-01), Feuerherm
patent: 5185109 (1993-02-01), Habig et al.
patent: 5437702 (1995-08-01), Burns et al.
patent: 5464107 (1995-11-01), Koeniger
patent: 5718852 (1998-02-01), Campbell et al.
Brecheisen William W.
Dinkel John Philip
Davis Robert
Owens-Brockway Plastics Products Inc.
LandOfFree
Synchronization of parison profile in a plastic container moldin does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Synchronization of parison profile in a plastic container moldin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synchronization of parison profile in a plastic container moldin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-875499