Surface treatment device for aluminum profile machining

The surface treatment device for aluminum profile machining comprises a sand blasting machine body, a conveying belt used for conveying plates is arranged in the sand blasting machine body, a spray head used for sand blasting is arranged in the sand blasting machine body, fixing plates are welded to the two ends of the top of the sand blasting machine body, and a sliding rail is welded between the fixing plates; a sliding mechanism is arranged on the front side of the sliding rail, a shifting mechanism is arranged on the top of the sliding mechanism, a reciprocating mechanism is arranged on one side of the sliding mechanism, and the spray head is connected to the bottom of the reciprocating mechanism. The device has the following beneficial effects that the limiting mechanism can be adjusted according to the size of the aluminum alloy plate, so that the moving range of the reciprocating mechanism is adjusted through cooperation of the shifting mechanism and the limiting mechanism, the reciprocating mechanism