Reciprocating mechanism suitable for reciprocating paint sprayer

The utility model discloses a reciprocating mechanism suitable for a reciprocating paint sprayer. The reciprocating mechanism comprises a spray gun fixing seat, a guide column, a trapezoidal screw, a mounting plate, a mounting guide rail seat and a synchronous belt translation structure, according to the device, the spray gun is mounted through the spray gun fixing seat, the spray gun fixing seat is mounted at the bottom of the guide column, and the synchronous belt translation structure is mounted on the guide column, so that the precision of reciprocating translation is increased, and the condition that the precision of the conventional reciprocating translation equipment is greatly reduced after long-term operation is improved; a trapezoidal screw rod is mounted in the guide column, the trapezoidal screw rod is rotated by rotating the plastic copper hand wheel, the trapezoidal screw rod moves up and down relative to the nut assembly, the up-down moving function is achieved, and the height of the spray gun