Hot runner system components of two materials and method of manufacture
AssigneeHusky Injection Molding Systems Ltd.
InventorPaul Blais
Life of this patent
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Abstract
A method of manufacturing a variety of injection molding hot runner system components using two materials. Blanks for portions of the components are formed of each material and fused, preferably by electron beam welding, then the component having the two portions is machined to its final configuration. Components made with this process include nozzle tip components such as tips, tip retainers, and tip inserts, as well as manifold bushings, valve stems and nozzle housings.
Claims14
A method of making an injection molding nozzle tip component with a seal ring, comprising the steps of:
- forming a first portion of the nozzle tip component from a first material;
- forming a seal ring from a second material;
- aligning the seal ring to the first portion at a junction whereat a surface of the seal ring abuts a surface of the first portion;
- and
- fusing the first portion and the seal ring together at the junction.
A method of forming an injection molding nozzle tip component, comprising the steps of:
- forming a first blank for a first portion of the nozzle tip component;
- forming a second blank for a second portion of the nozzle tip component;
- abutting the second blank against the first blank at a junction;
- fusing the first blank and second blank at the junction;
- and
- machining the fused first and second blanks to a configuration for the first portion and second portion of the nozzle tip component.
A method for manufacturing a nozzle tip for a hot runner system, the nozzle tip having a first portion and a second portion, the method comprising the acts of:
- selecting a first material having a thermal conductivity for the first portion of the nozzle tip;
- selecting a second material for the second portion having a thermal conductivity lower than the thermal conductivity for the first portion;
- permanently joining the first portion to the second portion;
- and
- thereafter, machining at least one of the first or second portions of the nozzle tip.
A method of manufacturing a hot runner nozzle tip component, comprising the acts of:
- machining a first blank for a first portion of the nozzle tip component, wherein the first portion has an internal bore;
- machining a second blank for a second portion of the nozzle tip component, wherein the second blank has an internal bore in fluid communication with the internal bore of the first portion;
- abutting the second blank against the first blank at a junction;
- fusing the first blank and second blank at the junction;
- and
- thereafter, machining the fused first and second blanks to a configuration for the first portion and second portion of the nozzle tip component.
Dependencies are inferred from the claim text.