Well, I don't know what that thing is. Its interesting, but I do not believe it to be a grinder at all. At least not any kind of grinder that I have ever seen. If you used it grind meat in it, the blood would run through the hinge on the bottom and make an awful mess.
It might be something like to shread some kind of fruit or something, but it just don't look strong enough to grind meat, cooked meat maybe, but not raw meat. Also, if it was a toy, why would it have all the blades? More questions.