Method of manufacturing cylindrical encoder

The invention provides a method of manufacturing a cylindrical encoder, molded from rubber material, containing ferromagnetic powders mixed therein, using a pair of metal molds comprising an upper metal mold and a lower metal mold. The lower metal mold has a cylindrical cavity which is provided with...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TANIGUCHI YASUO, NAKAGAWA KENJI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT MAKING GRANULES OR PREFORMS 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 PERFORMING OPERATIONS PHYSICS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TARIFF METERING APPARATUS TESTING TRANSPORTING WORKING CEMENT, CLAY, OR STONE WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The invention provides a method of manufacturing a cylindrical encoder, molded from rubber material, containing ferromagnetic powders mixed therein, using a pair of metal molds comprising an upper metal mold and a lower metal mold. The lower metal mold has a cylindrical cavity which is provided with a pot portion at an inlet side thereof, a rectification receiving portion at an outlet side thereof opposing to the inlet side, and a rectification portion between the pot portion and the rectification receiving portion at the inside of the pot portion. An annular shaped rubber material using the rubber material is formed, and mounted on the pot portion of the lower metal mold. The annular shaped rubber material is compressed on to the lower metal mold by using the upper metal mold with the applied heating, thereby charged into the cylindrical cavity.