Molding apparatus having a compensating structure
AssigneeHusky Injection Molding Systems Ltd.
InventorPierre Glaesener
Life of this patent
Estimating the term…
Abstract
Embodiments of the present invention teach a molding apparatus for producing a molded article from a molding material. The molding apparatus comprises an inner core (108) and an outer core (110) for defining a portion of a molding cavity (106) for defining the molded article: the inner core (108) including a compensator (120), the compensator (120) being configured to: retract to a retracted position responsive to the pressure of the molding material being injected into the molding cavity (106); and extend to an extended position responsive to the shrinkage during solidification of the molding material in the molding cavity.
Claims15
A molding apparatus for producing a molded article from a molding material, comprising:
- an inner core (108) and an outer core (110) for defining a portion of a molding cavity (106) for defining the molded article;
- the inner core (108) including a compensator (120), the compensator (120) being configured to:
- retract to a retracted position responsive to the pressure of the molding material being injected into the molding cavity (106);
- and
- extend to an extended position responsive to the shrinkage during solidification of molding material in the molding cavity.
A method (200) of injection-molding of a molded article from a molding material, the method comprising:
- increasing (202) a volume of a molding cavity (106), said increasing being implemented by means of retraction of an inner core (108) relative to an outer core (110) and being implemented in response to the pressure of the molding material being injected into the molding cavity (106);
- decreasing (204) the volume of the molding cavity (106), said decreasing being implemented by means of extension of the inner core (108) relative to the outer core and being implemented in response to shrinkage during solidification of molding material within the molding cavity (106).
Dependencies are inferred from the claim text.