Parts are removed either from the top or side of the mold (usually determined by cycle time). Be aware of mold obstructions—such as stack mold linkages, hot runner control cables and connectors, cooling hoses, etc.,

which could interfere with the take out robots end-of-arm-tooling. Also keep the cavities inside the tie-bar and leader pins clear of the sprue bar for unobstructed part removal.
Deep parts, like deli containers, should use an air eject system with or without a stripper plate for the fastest removal time.

Mold open stroke also needs close attention. To remove parts with a robot requires more mold open daylight than just eject and drop. The robot mold extraction arm and end-of-arm-tooling must fit in the mold along with the part and core. A molding machine with extended tie-bars may be required to give this open dimension.