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    • 5. 发明授权
    • Can bodies and method and apparatus for manufacture thereof
    • 罐体及其制造方法和装置
    • US3953994A
    • 1976-05-04
    • US247203
    • 1972-04-24
    • William H. BrawnerClaude A. GunsalusLowell K. Rockwell
    • William H. BrawnerClaude A. GunsalusLowell K. Rockwell
    • B21D22/10B21D51/16B21D51/26
    • B65D7/02B21D22/105B21D51/16
    • A tubular can body comprising a radially expanded central portion, a neck at each end of the central portion, and a radially extending flange adjacent each neck at the ends of the tubular member. A tubular, elastomeric member is positioned within a die-contained can body and is pressurized to mold the can body to the shape of the die. The operation forms a radially expanded can body, necks the can body adjacent the radially expanded portion, and flanges the ends of the body in a single operation. A tapered elastomeric mandrel may be utilized in place of the tubular mandrel, obviating the necessity of lubricating the mandrel and allowing the body to be axially extended so that the material from which the can is formed is altered in cross section both radially and axially. A structural groove, suitably positioned in the mandrel surface allows flanging to be effected at the upper end of the can body without damage to the mandrel. Alternatively, an expandable member may be substituted in place of either the tubular or tapered mandrel to form the can body through use of hydraulic pressure.
    • 包括径向膨胀的中心部分的管状罐体,在中心部分的每个端部处的颈部以及在管状部件的端部处与每个颈部相邻的径向延伸的凸缘。 管状的弹性体构件定位在一个装有模具的罐体内,并被加压以将罐体模制成模具的形状。 操作形成径向扩张的罐体,颈部靠近径向扩张部分的罐体,并且在一个操作中对主体的端部进行凸缘。 可以使用锥形弹性体心轴来代替管状心轴,从而避免了润滑心轴的需要,并允许主体被轴向延伸,使得形成罐的材料在径向和轴向方面的横截面都改变。 适当地定位在心轴表面中的结构凹槽允许在罐体的上端实现凸缘,而不损坏心轴。 替代地,可膨胀构件可以代替管状或锥形心轴,以通过使用液压来形成罐体。