Cleaning device for return belt of sealing-tape machine

The utility model discloses an adhesive tape machine return belt cleaning device which comprises a return belt, a scraping plate, a supporting arm, a supporting frame and a rotating shaft, the returnbelt comprises an installation face, the installation face faces the ground, the scraping plate comprises an attaching edge, and the attaching edge abuts against the installation face. The supportingarm is located below the return belt, and the scraper is fixedly connected to the end, away from the ground, of the supporting arm. The supporting frame is fixed to the ground, the rotating shaft is located below the return belt, the rotating shaft penetrates through the supporting arm in the direction perpendicular to the length direction of the supporting arm and then is installed on the supporting frame, and the supporting frame and the supporting arm can rotate around the rotating shaft. The moment from one end of the supporting arm close to the ground to the rotating shaft is larger thanthat from the fitting edge