High speed variable count mechanical stacker

Details High speed variable count mechanical stacker High speed variable count mechanical stacker

B - Operations, Transporting

65

H

B65H 31/30 (2006.01) B65B 5/06 (2006.01) B65G 47/08 (2006.01) B65G 47/82 (2006.01) B65G 47/84 (2006.01) B65H 39/075 (2006.01)

Patent

CA 2056038

Abstract of the Disclosure A pair of closed loop chains running in par- allelism have uniformly spaced apart paddles on them for transporting an article such as a pad between each paddle to a pad ejection station. A shaft orbits about an axis which is parallel to the direction in which the paddle conveyor is moving. The shaft car- ries a plurality of ejector rods which are mounted on a sleeve that is slidable reversibly axially on the orbiting shaft. After the orbiting rods collectively eject a series of pads from the paddles, the shaft continues its orbital movement until it reaches the back side of the pads again. While the rods are pass- ing through the paddles to eject the number of pads composing a stack, the sleeve on the orbiting shaft is translated axially in the same direction and at the same speed as the paddle conveyor is moving. The sleeve is shifted by having a cam follower thereon come into contact with a stationary cam when the rods begin their passage through the spaces between the paddles. When rods clear the spaces between the pad- dles, a spring restores the rods to their initial po- sition. The orbiting shaft can be caused to dwell in its orbit to allow a selected number of pads to arrive on the conveyor at the ejection station before orbit- ing the rods to cause ejection of the articles is ini- tiated.

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