Anti-drool sprue gated cross over nozzle

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 45/17 (2006.01) B29C 45/20 (2006.01) B29C 45/27 (2006.01) B29C 45/32 (2006.01) B29C 45/72 (2006.01)

Patent

CA 2416895

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.

Selon la présente invention, une plaquette de codage est intercalée entre la première et la deuxième partie d'une buse croisée, respectivement l'entrée et la sortie. La plaquette de codage s'emboîte dans les extrémités de la buse croisée pendant le remplissage du moule et fournit un passage pour le transfert de la matière fondue entre les deux. Une fois que le moule est rempli, la plaquette de codage agit pour dissiper la chaleur dans le passage pour le transfert de la matière fondue, favorisant ainsi la solidification de la matière fondue. Par conséquent, la solidification de la matière fondue dans la queue de coulée est assurée avec plus de certitude que pour les anciennes ouvres d'art, permettant un cycle de moulage relativement rapide en minimisant les risques de coulures de plastique.

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