Extrusion apparatus and method

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 47/92 (2006.01) B01F 15/04 (2006.01) B29C 47/06 (2006.01) B29C 47/10 (2006.01) G01G 11/08 (2006.01)

Patent

CA 2368755

A method and apparatus for extrusion establishes a target extrusion rate for a product to be extruded, uses a target extrusion rate to compute amount of extruded product desired to be produced in given time, numerically accumulates weight of batches of material supplied successively to the extruder, numerically accumulates time for the successively supplied batches to be extruded into actual product, compares the computed amount of extruded product desired to be produced to a numerically accumulated weight of batches of material which had been supplied successively to the extruder and adjusts extruder motor speed if the computed amount of material targeted to be extruded into product differs by more than a preselected amount from the numerically accumulated weight of material batches which have been extruded into actual product to produce a final extruder product.

Cette invention concerne un procédé et un appareil d'extrusion caractérisé en ce qu'il permet : fixer un taux d'extrusion cible pour un produit à extruder ; utilise ce taux d'extrusion cible pour déterminer un volume de produits extrudés à produire dans un laps de temps donné ; calcule le poids total des lots de matériau allant alimenter successivement l'extrudeuse ; calcule le total des lots de matériaux fournis successivement en vue de leur transformation en produits extrudés ; compare le volume calculé de produits à extruder à un poids total de lots de matériau fournis successivement à l'extrudeuse et ; règle le régime du moteur de l'extrudeuse si le volume à extruder calculé s'écarte de plus d'une valeur déterminée du poids total de lots de matériel extrudé en vue de la production de produits extrudés finaux.

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