Automatic feeding device for aluminum alloy profile machining and working method of automatic feeding device

The invention relates to the field of aluminum alloy profile machining equipment, in particular to an automatic feeding device for aluminum alloy profile machining and a working method of the automatic feeding device. Comprising a driving mounting table, a sliding seat plate and a lead screw motor, the lead screw motor is in driving connection with the sliding seat plate, the sliding seat plate is provided with a profile clamping mechanism, the profile clamping mechanism comprises a pair of mounting seats and a clamping disc which are arranged in pairs, driving devices are fixed to the mounting seats, and the driving devices are in transmission connection with the clamping disc; according to the clamping disc, a right-angle clamping groove is formed in the end, away from the mounting base, of a disc body, a pressing block piece is arranged in the right-angle clamping groove in a sliding mode, an adjusting screw rod is arranged in the second protruding part, and the adjusting screw rod is in transmission conne