A manufacturing method of a shaft provided with a magnet for an air flow rate adjustment valve in an internal combustion engine

A manufacturing method of a shaft (6) provided with a magnet (24) for an air flow rate adjustment valve (1) in an internal combustion engine; the method presents the steps of: arranging a first mold (26) which negatively reproduces the shape of the shaft (6) and determines the formation of a seat (2...

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Bibliographische Detailangaben
Hauptverfasser:	COLLI, MARCELLO, BELLATO, NAZARIO, PICIOTTI, ROBERTO, SIGNORELLI, GIORGIO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACTUATING-FLOATS AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS BASIC ELECTRIC ELEMENTS BLASTING COCKS COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES DEVICES FOR VENTING OR AERATING ELECTRICITY ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT INDUCTANCES LIGHTING MAGNETS MEASURING MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICS SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TAPS TARIFF METERING APPARATUS TESTING THERMAL INSULATION IN GENERAL TRANSFORMERS TRANSPORTING VALVES WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A manufacturing method of a shaft (6) provided with a magnet (24) for an air flow rate adjustment valve (1) in an internal combustion engine; the method presents the steps of: arranging a first mold (26) which negatively reproduces the shape of the shaft (6) and determines the formation of a seat (28) for the magnet (24); injecting a molten plastic material inside the mold (26) in order to form the shaft (6) provided with the seat (28) for the magnet (24) by injection molding; arranging a second mold (27) which surrounds the seat (28) for the magnet (24); and injecting a molten magnetic polymer in the second mold (27) for forming the magnet (24) by injection molding.