PURPOSE: To obtain a mold for suppressing occurrence of a flash on the end face of a cylindrical core to substantially zero at the time of molding a molded piece with a cylindrical core. ;CONSTITUTION: Pins 17, 27 are erected respectively on a movable mold 16 and a stationary mold 26 to be concentrically opposed to each other. On end of a hole of a cylindrical core 2 is previously inserted and set over the pin 17. The pin 27 is fitted into the other end of the hole as the mold is closed. With the progress of the mold closing, the peripheral ends of the cylindrical core 2 are engaged and fitted with top parts 18a, 28a of bushes 18, 28. Lastly, the cylindrical core 2 is fastened by fastening ends 17a, 27a provided on the pins 17, 27. A predetermined material is injected into a cavity 3a formed around the cylindrical core 2 to be molded into a molded piece. The cylindrical core 2 is released from a fitted state by a spring 29 and an ejector rod as the mold is opened.;COPYRIGHT: (C)1995,JPO
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