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1. 发明授权

US4540323A Metal containers and their manufacturing method and apparatus 失效
标题翻译：金属容器及其制造方法和装置
公开(公告)号：US4540323A
公开(公告)日：1985-09-10
申请号：US591527
申请日：1984-03-20
申请人： Makoto Inoue , Hirofumi Irie , Youichi Kobayashi , Tetuo Kubota
发明人： Makoto Inoue , Hirofumi Irie , Youichi Kobayashi , Tetuo Kubota
IPC分类号： B21D51/32 , B21D39/00
CPC分类号： B21D51/32
摘要： A cylindrical metal container with a relatively large holding capacity has triple seams having a vertically long, generally elongate rectangular cross section, the top and bottom parts of the seam having a convex substantially semi-elliptical or semi-circular profile. The outer face of the seam bulges outward adjacent its top, or its top and bottom, and the middle part between the top and bottom constitutes a pressed groove between the top and bottom and substantially parallel to the axis of the container. The body and end plate flanges are held in strong and direct contact with each other, overlapping each other in the center of the seam. A sealing compound is sealed in a void left between the edge of one flange and the curved portion of the other flange. The seam is formed by nip-bending the edge of the end plate flange with the first (entry-side) corner of a forming groove in a nip-bending and press-forming roll, seaming together the body and end plate flanges with the forming groove in a seaming roll, then, upon completion of seaming, press forming the seam thus formed into a desired shape with the forming groove in the afore-mentioned nip-bending and press-forming roll. A special nip-bending recess is provided at the first or entry side corner of the forming groove in the nip-bending and press-forming roll.
摘要翻译：具有相对较大的保持能力的圆柱形金属容器具有三个接缝，具有垂直长的，大体上细长的矩形横截面，接缝的顶部和底部具有凸起的大致半椭圆形或半圆形轮廓。接缝的外表面在其顶部或其顶部和底部附近向外凸出，并且顶部和底部之间的中间部分构成顶部和底部之间的基本平行于容器轴线的压凹槽。主体和端板凸缘彼此牢固且直接接触，在接缝的中心彼此重叠。密封化合物密封在一个凸缘的边缘和另一个凸缘的弯曲部分之间的空隙中。接缝是通过将端板凸缘的边缘与形成沟槽的第一（进入侧）角部夹在弯曲和压制成型辊中而形成的，其将主体和端板凸缘与成形在接缝辊中，然后在接缝完成后，通过上述夹压弯曲和压制成型辊中的成形槽将形成的接缝压制成所需的形状。在夹持弯曲和压制成型辊中的成形槽的第一或入口侧角处设有特殊的夹紧弯曲凹部。

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