Robotic manufacturing doesn't mean zero labor. There are still many jobs involved that can't be automated. Ford, for example, uses a significant amount of robotic assembly, but still employs over 150,000 people.
So yes, it replaces some jobs. But if we brought all manufacturing of domestic products back to the US, even if they were 100% produced with robotic manufacturing, there wouldn't even be enough workers to fill the necessary non-automated jobs.
Not to turn political (And I'm independent) but Obama said something during the debates that rang really true to me. He said that the low level jobs in this country are going away for good and we need to focus on creating mid-level jobs.
It makes sense that as society and technology evolve, the low skill jobs will be replaced by automation. I think this is a good thing. In the long term, we shouldn't shun technology just because it keeps a real human from doing a mundane task 40 hours a week.
So yes, it replaces some jobs. But if we brought all manufacturing of domestic products back to the US, even if they were 100% produced with robotic manufacturing, there wouldn't even be enough workers to fill the necessary non-automated jobs.