Lifting type feeding mechanism

The utility model relates to a lifting type feeding mechanism. The lifting type feeding mechanism comprises a supporting frame, a lead screw sliding rail module, a servo motor, a positioning pin and apositioning pin installation plate. The lead screw sliding rail module is specifically located on the upper end face of the supporting frame. A fixing block is arranged on a sliding block of the leadscrew sliding rail module. The fixing block is fixedly connected with the bottom of the air cylinder through a connecting block. A piston rod of the cylinder is fixedly connected with the lower end surface of a lifting plate; the lifting plate is provided with a fixing edge, the positioning pin penetrates through the lifting plate, the lower end face of the lifting plate is connected with the positioning pin mounting plate through threads, the positioning pin specifically comprises a positioning pin upper portion and a positioning pin middle portion, the positioning pin upper portion is in around head shape, and the p