Cutting device for cutting shape of pearl wool

The cutting device comprises a shell, a limiting frame and a fixing block, an air inlet pipe is fixed to the side end face of the shell in an embedded mode, an air outlet pipe is fixed to the top end face of the shell in an embedded mode, a top plate and a supporting plate are welded to the inner wall of the shell, an air cylinder is fixedly installed on the bottom end face of the top plate, and an air outlet pipe is fixedly installed on the bottom end face of the supporting plate. A first fixing plate is fixedly installed on the bottom end face of the air cylinder, a guide groove is formed in the supporting plate, an electric heating wire is installed on the bottom end face of the supporting plate in an attached mode, a fixing frame is welded to the bottom end face of the supporting plate, a machine box is installed on the side end face of the fixing frame, and a first lead screw is rotatably installed on the machine box; a connecting frame is welded to the bottom end face of the limiting frame, a limiting r