A system for interfacing between different types of conveyor systems that comprise a first serial conveyor system using a sequence of object carriers configured to transport a continuous serial stream of objects, and a parallel conveyor system configured to simultaneously transport one or more arrays of objects. A first accumulator unit can be used to accumulate a batch of the object carriers of the first serial conveyor system. Each of the object carriers can carry an object of the continuous serial stream of objects for accumulating a batch of the objects therein. Two or more first movable trays, each configured to receive an array of the objects from the batch of objects accumulated in the first accumulator unit, can be used to transfer the received array of objects to the parallel conveyor system, and load the objects thereby carried onto grippers of the parallel conveyor system.