The utility model relates to the technical field of filling
medicine bottle capping, in particular to a filling
bottle cap screwing device which comprises a
bottle conveying track, a cap conveying track and a cap screwing
assembly, the cap screwing
assembly comprises a base, a
rotating disc and a cap screwing piece, the
rotating disc is provided with an opening, the front end of the base is connected with the bottle conveying track, the bottle conveying track is provided with a guiding piece, and the bottom end of the cap conveying track is located above the opening. A pre-pressing
assembly is arranged at the bottom end of the cap conveying rail, and a discharging port is formed in the rear end of the base. The guiding piece guides
medicine bottles to the
rotating disc, the rotating disc drives the
medicine bottles to rotate to the bottom end of the cap conveying rail, bottle caps fall to the top ends of the
medicine bottles, the pre-pressing assembly pre-presses the bottle caps to the
medicine bottles, the rotating disc drives the
medicine bottles to rotate to the position below the cap screwing piece, the cap screwing piece is started to tighten the bottle caps, and then the rotating disc drives the sealed medicine bottles to move to the discharging port to be discharged. And pre-pressing is conducted through the pre-pressing assembly, the probability of deviation or falling caused by
dislocation of the
bottle cap and the bottle body is reduced, and therefore the medicine bottle capping efficiency is improved.