No, there is no Robot Heaven. When a robot gets destroyed, it's inner working spewed all over the floor, it's oil-blood flowing all over the ground and seeping into the soil, it ceases to be. There is no afterlife for a machine. It is created to serve it's purpose, and when it breaks down it is replaced with a newer more efficient model. Any pretense of having a soul, of being anything other than a tool, is completely laughable. A machine cannot feel anything other then what it is programmed to, and cannot have a soul because of this. Therefore there is no heaven for nonexistent souls to gather in, because said souls do not exist.