Totally-closed lifting reciprocating type side spraying machine

The utility model discloses a totally-closed lifting reciprocating type side spraying machine which comprises a closed main frame, a spray gun module and a lifting driving module, the spray gun module and the lifting driving module are arranged in the main frame, the lifting driving module can drive the spray gun module to do lifting motion, the spray gun module comprises a spray gun head, and the side portion of the main frame is provided with a side portion notch in the vertical direction. The spray gun head extends out of the main frame from a side notch of the main frame, a first roller, a second roller, a third roller and a fourth roller are arranged in the main frame, a belt connecting device is arranged on the spray gun module, and a shielding belt is connected to the belt connecting device; the first end of the shielding belt sequentially bypasses the first roller, the second roller, the third roller and the fourth roller to define a belt ring, and the shielding belt is used for shielding the side not