| 摘要 |
PROBLEM TO BE SOLVED: To contrive not to restrain the moving distance of a sliding screw by the moving distance of any other screw when a mold is pulled out of a molding by rotating the former, by sliding at least, one of screws of the mold with at least, the screws of different pitches installed coaxially. SOLUTION: When pulling a mold 2 out of a finished product, the mold 2 is rotated into an arrow A direction and the mold 2 is moved over a distance to be set by the pitch of a male screw 4 for the mold 2. In addition, the rotating force of the mold 2 is transmitted to a mold 3 through a pin 6 and a groove 7, resulting in the start of a movement of the mold 3. If the mold 2 is monolithically formed with the mold 3, the moving distance of the mold 3 is equal to that of the mold 2 but the mold 2 is only connected to the mold 3 through the pin 6 and the groove 7. Consequently, when the mold 2 is moved rotating, the operating force is transmitted to the mold 3 but the moving distance of the mold 3 is not restrained. That, is, the distance over which the mold 3 is moved is set by the pitch of the male screw 5 of the mold 3, and is not irrelative to the moving distance to be set by the male screw 4 for the mold 2. |
