| 摘要 |
<p>A button attaching machine (10) has a chute assembly (15) for conveying button parts (B) and a blocking device (29) for preventing button parts from falling from a detachable intermediate chute (18) of the chute assembly when the intermediate chute is detached. The blocking device comprises a spring-loaded plunger (34) supported by the intermediate chute adjacent to a lower end (18b) thereof and reciprocally movable in a plane perpendicular to the longitudinal axis of the intermediate chute. The plunger is normally held in engagement with a lower chute (18) to retract away from a button-parts guide channel (19) of the chute assembly, and upon detachment of the intermediate chute, it is movable into a blocking position where it is disposed below the channel and spaced from the lower end of the intermediate chute by a distance (L,) which is small enough to block the passage of the button parts.</p> |
