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US 8,702,412 B2Granted
Superhard components for injection molds
AssigneeUS Synthetic Corporation
InventorsRobert Keith Judd, Terry Mitchell Lewis
Life of this patent
Estimating the term…
Abstract
Embodiments of the invention relate to injection mold components, assemblies, and molding system that include superhard materials. Such injection mold components, assemblies, and systems may decrease wear of certain injection mold components, which may result in improved productivity of the injection mold and molding systems that utilize such components.
Claims18
An injection mold component for use in an injection mold, comprising:
- a cemented carbide substrate;
- a superhard material bonded to the cemented carbide substrate and forming a wear-resistant surface, the superhard material including polycrystalline diamond having a plurality of bonded diamond grains defining interstitial regions in which at least a portion thereof include cobalt therein;
- and
- wherein at least one of:
- the wear-resistant surface is moveable within the injection mold;
- or
- the wear-resistant surface defines at least a portion of a conduit for communicating a molding material into the injection mold.
4 more elements
An injection mold assembly, comprising:
- a first mold plate;
- a second mold plate;
- one or more molding elements located on one or more of the first or second mold plates;
- and
- an injection mold component located on at least one of the first mold plate, the second mold plate, or the molding element, the injection mold component comprising a superhard material forming at least a portion of a surface of the injection mold component, wherein the superhard material is bonded to a cemented carbide substrate, the superhard material including polycrystalline diamond having a plurality of bonded diamond grains defining interstitial regions in which at least a portion thereof include cobalt therein.
2 more elements
An injection molding system, comprising:
- an injection molding machine;
- an injection mold operably coupled to the injection molding machine, the injection mold comprising:
- a stationary portion;
- a moving portion;
- a molding element located on one or more of the stationary portion or the moving portion;
- and
- an injection mold component located on at least one of the stationary portion or the moving portion, the injection mold component comprising a superhard material forming a wear-resistant surface of the injection mold component, wherein the superhard material is bonded to a cemented carbide substrate, the superhard material including polycrystalline diamond having a plurality of bonded diamond grains defining interstitial regions in which at least a portion thereof include cobalt therein;
- and
- wherein:
- the injection molding machine is configured to inject molding material into the injection mold via a conduit at least partially defined by the wear-resistant surface of the injection mold component;
- or
- the wear-resistant surface is moveable within the injection mold.
9 more elements
Dependencies are inferred from the claim text.