Apparatus for blow molding

Details Apparatus for blow molding Apparatus for blow molding

2007-09-18

2007-09-18

Davis, Robert B. (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

C425S195000, C425S525000, C425S526000, C425S527000, C425S536000

Reexamination Certificate

active

11054283

ABSTRACT:
A mold assembly for blow molding comprises first and second mating mold components, each mating mold component comprising molding surfaces open to a mating face of the mold component and defining the exterior of an article to be molded from a tubular parison and at least one replaceable element being attached thereto by retaining means accessible from the mating face thereof whereby the replaceable elements may be installed and removed while the mating mold component is mounted in a press of a blow molding machine. The replaceable elements comprise any of inserts comprising molding surfaces defining a neck portion of an article to be molded, a blow needle to pierce the wall of and pressurize the parison and heat pipes for transferring heat from the molding surfaces. A blow molding machine comprises a press mechanism for operating a mold assembly and a mold assembly according to the invention mounted thereto.

REFERENCES:
patent: 3089185 (1963-05-01), Di Settembrini
patent: 3294885 (1966-12-01), Cines et al.
patent: 3380121 (1968-04-01), Chittenden et al.
patent: 5585121 (1996-12-01), Morris
patent: 5776518 (1998-07-01), Wohlgemuth
patent: 5840350 (1998-11-01), Salemi
patent: 5894024 (1999-04-01), Lambarth et al.
patent: 08034022 (1996-02-01), None
Rosato et al, Blow Molding Handbook, 1989, Oxford University Press, pp. 273-279 and 299-303.

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