| 摘要 |
It is necessary to close an open end of a core tube when a fork is charged or not charged in the core tube and an apparatus for opening and closing the core tube comprises a first and second lid members which are operated independently. The first lid member is utilized at a time when the fork is charged and is provided with a fork charging portion having a configuration corresponding to that of the fork. The first lid member is composed of a pair of door members formed to be openable by dividing the first lid member at a central portion thereof, the door members being provided with cutouts, respectively, constituting the fork charging portion when the door members are closed. The second lid member is utilized at a time when the fork is not charged and is provided with a solid structure. The first and second lid members are independently swung and moved forward and backward with respect to an open end face of the core tube.
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