Anti-drool sprue gated cross over nozzle
AssigneeStackteck Systems Limited
InventorsMihai Berceanu, Gary Fong
Life of this patent
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Abstract
According to the present invention a coding plate is interspersed between first and second respective inlet and outlet cross over nozzle parts. The cooling plate engages ends of the cross over nozzles during mould filling and provides a melt transfer passage therebetween. Once the mould is filled, the cooling plate acts to dissipate heat from the melt transfer passage thereby promoting solidification of melt therein. Accordingly melt solidification in the sprue is assured with more certainty than prior art designs enabling relatively fax mould cycling with minimal risk of drool.
Claims10
An anti-drool cross over nozzle arrangement for a sprue gated melt transfer system comprising:
- a first nozzle member having a melt outlet end with a melt outlet for discharging melt;
- a second nozzle member having a melt inlet end with a molt inlet for receiving melt;
- a cooling plate mounted between said first and second nozzle members, said cooling plate having a thirst and second receptacles respectively registering with and for receiving said melt outlet end and said melt inlet end during a mould closed stage of an injection moulding cycle;
- and
- said cooling plate having a melt transfer passage extending between said first and second receptacles for providing fluid communication between said melt inlet and said melt outlet during said mould closed stage.
Dependencies are inferred from the claim text.