High speed erecting mechanism for sleeve type carton

A machine for sequentially manipulating out of a hopper a collapsed sleeve type end loading carton and for initiating set up thereof into open ended condition, said machine comprising driving means, a main shaft coupled with said driving means and rotatable about a fixed axis, an elongated support rod having one end thereof slidably mounted on said main shaft and bodily rotatable therewith, carton pick up means fixedly mounted on the other end of said elongated rod for reciprocal movement in a direction which is transverse to said main shaft and for orbital movement in one direction about said main shaft for sequentially engaging the exposed walls of the lowermost carton and withdrawing the lowermost carton from the hopper, auxiliary means rotatable by said driving means in synchronism with rotation of said main shaft for directly receiving a collapsed carton from said pick up means and having a part which is arranged for orbital movement in the opposite direction from said one direction of orbital movement of said carton pick up means for engaging the carton so as to initiate a carton set up operation, said carton pick up means including, a pair of suction cups which engage different ones of said exposed walls of the carton and wherein one of said suction cups initiates withdrawal of the carton from the hopper prior to withdrawal action of the other of said suction cups and said one of said suction cups releases the carton prior to release of the carton by the other of said suction cups.