Afros S.p.a.

Alberto Bonansea

Carlo Fiorentini

Marco Volpato

The invention relates to an apparatus for fine and controlled adjustment of an injection molding process and a related industrial process. The apparatus () has a sealed mold () supplied with fluid reactive resin via a supply inlet () and by means of a mixing and injection head () so as to impregnate with said resin fibers of composite material loaded inside a cavity () of the mold () and wherein at least one storage container () having an inlet/outlet opening () in fluid communication with an outlet () of said injection head () is provided so as to store a predefined quantity of fluid resin inside a storage chamber () prior to completion of the injection phase. Advantageously, the storage container () is a cylinder () defining internally a storage chamber () which houses slidably inside it a plunger () operated by an actuator () configured as a cylinder/piston assembly arranged as a coaxial extension of said cylinder () and comprising an actuating piston () having a stem () coinciding with the stem of said plunger (); the cylinder () of the storage chamber () and the cylinder () of said actuator () having cross-sections different from each other.

Apparatus for fine and controlled adjustment of an injection molding process and related industrial process

Apparatus for the production of polyurethane material with a cleaning member having a filler feeding channel and an inclined front surface

A high-pressure self-cleaning mixing apparatus adapted to mix at least first and second reactive polyurethane-forming components and feed the mixed components to a mold is disclosed. The apparatus includes at least a mixing chamber, first and second feed passages, first and second recycle passages, and a cleaning member having at least first and second longitudinally-extending recycle grooves spaced from each other. The cleaning member is movable between an open position in which the first feed passage radially feeds the first polyurethane-forming component to the mixing chamber and a closed position in which the first longitudinally-extending recycle groove communicates the first feed passage with the first recycle passage to recycle the first polyurethane-forming component instead of feeding the first polyurethane-forming component to the mixing chamber. The second feed passage may be communicated with a longitudinally-extending passage of the cleaning member to permit the second polyurethane-forming component to be fed into the mixing chamber along an axial direction of the mixing chamber. A valve member may be provided to prevent the flow of the second polyurethane-forming component to the mixing chamber by recycling the second polyurethane-forming component to the second recycle passage. Spacing between the first and second grooves seals the first feed and recycle passages from the second feed and recycle passages.

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Caronno Pertusella, Italy

Alberto Bonansea