MOLDING METHOD FOR PRECOATED STEEL SHEET
    1.
    发明申请
    MOLDING METHOD FOR PRECOATED STEEL SHEET 审中-公开
    预制钢板成型方法

    公开(公告)号:WO2006082693A8

    公开(公告)日:2007-09-07

    申请号:PCT/JP2005024242

    申请日:2005-12-27

    CPC classification number: B60K15/03 B21D19/08 B21D51/18

    Abstract: A method of molding a container half body (10) by using a precoated steel sheet (21). An L-shaped part (36) in cross section is formed while retaining, by a blank holder (33) in a second drawing step, a first flat part (27) formed on the outer peripheral part of a first molded body (26) molded in a first drawing step. Accordingly, wrinkles do not occur at the vertical part (38) of the L-shaped part. An unnecessary portion (44) on the outside of a flange part (46) is cut off in a trim step. Accordingly, the width of the flange part is reduced. Also, since the narrow flange part is bent in a bending step so as to be flush with the vertical part, no wrinkle occurs thereon.

    Abstract translation: 一种通过使用预涂钢板(21)成型容器半体(10)的方法。 在第二拉伸工序中,通过坯料夹持器(33)保持在第一成形体(26)的外周部形成的第一平坦部(27),形成横截面为L字形的部分(36) 在第一拉伸步骤中模制。 因此,在L字形部分的垂直部分(38)处不会发生褶皱。 在凸缘部分(46)的外侧上的不需要的部分(44)在修整步骤中被切断。 因此,凸缘部的宽度减小。 此外,由于窄的凸缘部分在弯曲步骤中弯曲以与垂直部分齐平,所以在其上不发生褶皱。

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