Method for the manufacture of metal packaging cans, and a semi-product
in the manufacture of such cans
    3.
    发明授权
    Method for the manufacture of metal packaging cans, and a semi-product in the manufacture of such cans 失效
    用于制造金属包装罐的方法以及制造这种罐的半成品

    公开(公告)号:US4681237A

    公开(公告)日:1987-07-21

    申请号:US592786

    申请日:1984-03-23

    申请人: Leo Hartman

    发明人: Leo Hartman

    摘要: In the manufacture of metal packaging cans metal sheet is deep-drawn and ironed to form a seamless tube having a bottom in one-piece therewith, and the tube is cut transversely to remove excess material at the end remote from the bottom. This forms a cylindrical body and bottom of a two-piece can. To minimize waste of material and to make possible the manufacture of a thin-walled three-piece can, the method includes cutting the deep-drawn and ironed tube transversely at at least one location intermediate the bottom and the end remote from the bottom so that, from the tube, there are formed a cylindrical body and bottom of a two-piece can and at least one cylindrical body of a three-piece can. Suitably, the tube is shaped by the deep-drawing and ironing so as to have a lesser wall-thickness at regions corresponding to the sidewalls of the cans and a greater wall-thickness at regions which correspond to the flange portions of the cans.

    摘要翻译: 在金属包装罐的制造中,金属片被深拉和熨烫以形成具有与其成一体的底部的无缝管,并且横向切割管以在远离底部的端部移除多余的材料。 这形成一个圆筒体和两片罐的底部。 为了最小化材料的浪费并且制造薄壁三件式罐,该方法包括在远离底部的底部和端部之间的至少一个位置横向切割深拉和熨烫的管,使得 从管中形成圆筒体和底部的两件式罐和至少一个三件式的罐体。 适当地,通过深拉和熨烫使管成形,从而在对应于罐的侧壁的区域处具有较小的壁厚,并且在对应于罐的凸缘部分的区域处具有更大的壁厚。