The die change carts are positioned in front of their presses. Each die change cart is loaded with a new die. An empty die change cart is positioned at the rear end of the last press in the line.
The Die change carts and the press tables are in line. New dies are pushed into the presses at the same time as the used dies are pulled out by the carts at the back of the presses.
This is why it is called the Domino Die Change.
The Die change carts which now are loaded with the used tool that was pulled out are now moved to the parking position.