I don’t know whether you should do this at all. If you’re trying to rank your articles, you won’t get the best results by having a bot essentially piece together an article from other people’s content. Copyscape would be able to find it. More importantly, Google will be able to spot it, and your site might get penalized. If you want to use other people’s articles to make your own, you should write them in a way that won’t be discovered, using your own words, and adding something new. Still, good luck with scraping software, I hope all goes well!