7-shaped commutator segment cold extruding mechanism

The utility model discloses a 7-shaped commutator segment cold extruding mechanism. The 7-shaped commutator segment cold extruding mechanism includes a mould seat (4); an extruding and shaping mold (5) is arranged in the mould seat; one end of the extruding and shaping mold is connected with an extruding punch (3); the other end of the extruding and shaping mold is connected with an unloading assembly (13); the head of the extruding punch (3) is of an inversed-7-shaped structure and is connected with one end of the extruding and shaping mold (5); and an extruding cavity (12) is formed in the extruding and shaping mould (5). With the 7-shaped commutator segment cold extrusion mechanism of the utility model adopted, the utilization rate of raw materials is high, and scraps generated from an original punching process can be avoided, and about 30% of the materials can be saved; the shape processing of commutator segments is uniform and has high precision; and the commutator segments won't be deformed or intensively damaged, the mechanical strength of the commutator segments can be ensured. Since cold extruding processing is adopted, the 7-shaped commutator segment cold extruding mechanism is not limited by the size of molds and is not limited by the sizes and specifications of commutator products, and therefore, the 7-shaped commutator segment cold extruding mechanism is suitable for the processing of commutator segments in various kinds of specifications.