| 摘要 |
A rotary transfer mechanism for transferring flat sleeve cartons ( 20 ) from a magazine ( 22 ) to a receiving station ( 23 ) on a conveyor ( 24 ), with opening of the cartons ready to receive end-loaded product, is characterized in that the path of suction cups ( 32 ) for holding the cartons during transfer is basically determined by a continuous stationary cam track ( 34 ) permanently engaged by a cam follower ( 37 ) on a gear segment ( 35 ) pivotally mounted on carrier means ( 29 ) rotatable by a drive shaft ( 26 ), the suction cups ( 32 ) being carried by a support shaft ( 30 ) rotatable on the carrier means and coaxial with a pinion ( 38 ) meshing with the gear segment. ( 35 ), and the support shaft being connected to a bracket ( 48 ) carrying a manifold ( 47 ) for the suction cups ( 32 ) by a crank arm ( 53 ), which is connected by a link arm ( 54 ) to a rocker arm ( 55 ) freely rotatable on the drive shaft ( 26 ). A servomotor ( 27 ) programmed by a computer (not shown) drives the drive shaft ( 26 ) through a gearbox ( 28 ) to vary the speed of the suction cups ( 32 ), especially when passing through the delivery station ( 23 ) to effect opening of the cartons ( 20 ) by movement relative to flights ( 64 ) on the conveyor ( 24 ).
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