Variable speed drive mechanism with dwell

Details Variable speed drive mechanism with dwell Variable speed drive mechanism with dwell

B - Operations, Transporting

65

G

B65G 47/90 (2006.01)

Patent

CA 2142927

A variable speed drive mechanism for transferring a workpiece in an accelerated and decelerated motion comprising a pair of spaced carrier arms driven by a main shaft that rotates through a fixed stationary gear. A set of pulleys is mounted between the carrier arms and a flexible drive member drivingly connects the stationary gear and the pulleys. One of the set of pulleys drives a pair of bellcranks each of which is operatively connected to a transfer arm through a roller and cam slot arrangement. The connection between the bellcrank and transfer arm provides a more desired acceleration and deceleration of the transfer arms.

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