Ejector rod mechanism for cold welding machine tool

The utility model relates to an ejector rod mechanism for a cold welding machine tool, which comprises a rack and a driving piece, a pre-ejector pin, a final upsetting die, a die hole, a wire feeding hole and a cutter reciprocating between the die hole and the wire feeding hole are arranged on the rack, a wire is arranged in the wire feeding hole, the pre-ejector pin and the final upsetting die are arranged on the rack through a sliding block, and the driving piece is arranged on the rack. A die hole is formed in the base, a die body is arranged in the die hole, a die cavity for cold welding of wires is formed in the die body, an ejector rod matched with the pre-ejector pin and the final upsetting die is arranged in the other end, opposite to one end of the pre-ejector pin, of the die cavity, and the sliding block is connected with a driving part through a rotating shaft. The pushing assembly pushes the ejector rod to be matched with the pre-ejector pin for the first time to enable the wire rod in the die cav