Powder cleaning device of large-size powder bed melting equipment

The utility model discloses a powder cleaning device of large-size powder bed melting equipment. The powder cleaning device comprises a bracket, a vibration turntable and a cylinder changing unit, the vibrating turntable is mounted on the bracket; the cylinder changing unit is used for loading a forming cylinder; the cylinder changing unit is formed by splicing and enclosing four side plates; the side plates can be spliced in a straight inserting manner; powder falling grooves are formed in the two sides of the supporting plane of the support. A powder collecting unit is arranged below the bracket; the vibration rotating disc comprises a supporting disc, a vibration motor and a rotation driving mechanism. The device is simple in structure and convenient to use; the device is suitable for the conditions of large forming size, large powder cleaning amount and continuous production and processing requirements; according to the powder cleaning device, the traditional manual powder cleaning mode is changed, the op