| 摘要 |
A rotary device performing the task of changing the direction of advancement of a plastics card or metal plate, suitable for being inserted in a punching machine, constituted by a bearing structure, a linear conveyor for the plastics card or metal plate and a drive motor, in which the bearing structure comprises a lower, fixed framework, inside which the drive motor is housed, above which a upper, rotary framework is rotatably supported, on which the linear conveyor is positioned. A first positive transmission connects the drive motor with the upper, rotary framework of the structure, causing the upper, rotary framework to rotate by a predetermined angualr rotation, and a second positive transmission connects the drive motor with the linear conveyor which conveys the plastics card or metal plate. Between the two positive transmissions and the drive motor two free-wheel mechanisms are interposed, which cause the two positive transmissions to be selectively actuated.
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