Online automatic waste rejecting device of rotary press

The invention relates to a rotary press on-line automatic waste removing device which comprises a rack, a first conveying section, a second conveying section and a third conveying section are sequentially arranged on the rack from back to front, the first conveying section is provided with a first conveying belt, and at least one paper blocking mechanism is arranged on the side, close to the second conveying section, of the first conveying section. The paper blocking mechanism comprises at least one paper blocking piece and a driving mechanism, and the driving mechanism drives the paper blocking piece to act so that the paper blocking piece can be located at a paper blocking position for blocking printed matter or an initial position for releasing blocking. The second conveying section comprises an overturning frame, a second conveying belt is arranged on the overturning frame, and the overturning frame can be overturned downwards in an inclined mode and enables unqualified products on the second conveying be