| 摘要 |
A method and apparatus for forming end panels or shells for two-piece cans includes incorporation of the tooling necessary to form the panel within a double acting press. The tooling includes a fluid actuated hold down sleeve, carried by the outer slide of the press, which is capable of being moved into holding engagement with the metal from which the panel is formed. The inner slide of the press carries a punch which is movable into forming engagement with the metal and the outer slide carries tooling which is capable of blanking the metal against a cut edge carried by the fixed lower platen of the press. The chuck wall of the end panel is then preliminarily formed by the action of the punch drawing the blank around the fixed radius of a die core member fixedly carried by the bottom press platen. Further downward movement of the punch drapes the metal about the radius just referred to and finally sets the chuck wall against a fluid supported cushioning member carried by the lower platen so that, in effect, a reverse draw about the periphery of a fixed die core center is achieved. The method of this invention includes utilization of the apparatus just described and primarily relates to the cushioning and reverse draw action for finally setting the chuck wall.
|
