Liquid molding system comprising a liquid molding pressure control apparatus and method of using the same

A liquid molding pressure control apparatus as well as a method using the apparatus are provided. The apparatus includes a housing and a piston assembly movably disposed within the housing. The piston assembly includes a shaft and first and second pistons engaged with the shaft. The housing is confi...

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Bibliographische Detailangaben
Hauptverfasser:	CUNDIFF, THOMAS R, MILLER, SCOTT A
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A liquid molding pressure control apparatus as well as a method using the apparatus are provided. The apparatus includes a housing and a piston assembly movably disposed within the housing. The piston assembly includes a shaft and first and second pistons engaged with the shaft. The housing is configured to receive a pressurized fluid adjacent the first piston and to receive a starting material adjacent the second piston. The first and second pistons are sized such that the starting material received within the housing exits the housing at a pressure greater than the pressure of the pressurized fluid received within the housing. Accordingly, the liquid molding control apparatus may be used to increase the pressure within the mold cavity after mold cavity has been provided with the starting material. Alternatively, the liquid molding control apparatus may be used to substantially maintain pressure within a mold cavity after the mold cavity has been provided with the starting material.