PCB automatic detection machine

The utility model discloses a PCB automatic detection machine, comprising a rack, a feeding assembly arranged at the left side of the rack, a discharging assembly arranged at the right side of the rack, conveying guide rails arranged at the front and the rear of the upper end surface of the rack respectively, and a conveying groove arranged at the side wall of the conveying guide rail close to theother conveying guide rail. The conveying groove penetrates through the conveying guide rail left and right, a penetrating groove penetrating through the rack up and down is formed in the portion, between the conveying guide rails, of the rack, a first moving plate is arranged in the penetrating groove, a mounting frame is arranged on the portion, below the first moving plate, of the rack, and afirst air cylinder is arranged on the mounting frame. An air cylinder shaft of the first air cylinder is fixedly connected with a first movable plate, a pulling mechanism capable of pulling PCBs in the feeding assembly into th