Mold, Method Of Manufacturing The Same, Injection Molding Device, And Injection Molding Method

摘要

The mold comprises a stationary mold half ( 31 ) and a movable mold half ( 32 ). An annular groove ( 33 ) surrounding a cavity ( 30 a) formed by the stationary mold half ( 31 ) and the movable mold half ( 32 ) is formed in one of the stationary mold half ( 31 ) and the movable mold half ( 32 ), and a mold seal member ( 36 ) formed of a silicon rubber is disposed in the annular groove ( 33 ). A mold seal groove ( 37 ) opposed to the mold seal member ( 36 ) is formed in the other of the stationary mold half ( 31 ) and the movable mold half ( 32 ). The mold seal member ( 36 ) is projected from the contact surface of the stationary mold half ( 31 ) or the movable mold half ( 32 ) and comprises a fitting part ( 36 a) fittedly installable in the mold seal groove ( 37 ). The cross sections of the fitting part ( 36 a) and the mold seal groove ( 37 ) are formed in an approximately same shape.