Device for the suction of air in cavidades of molds of injection and the subsequent expulsion of the parts molded in said cavidades. (Machine-translation by Google Translate, not legally binding)

摘要

Device for suction of the air in cavities of injection molds and the subsequent expulsion of the molded parts in said cavities. This device is applicable in injection molds with one or more injection cavities (2) provided with an air evacuation duct (3) provided with a shut-off valve (4). This device comprises a pneumatic cylinder (5) and a venturi ejector (6), connected to a first mouth (71) for the introduction of a pressurized air flow that simultaneously causes the opening of the shut-off valve (4) and the extraction, by the action of the venturi ejector (6), of the air contained in the cavity (2) of the mold just before the injection of plastic material into said mold cavity. (Machine-translation by Google Translate, not legally binding)