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    • 2. 发明公开
    • A process for producing a metal base plate having a projected portion formed with a slit, a die and a mold structure used in the same
    • 一种用于生产金属板的方法具有凸起和槽标签部分,模具结构
    • EP1710027A2
    • 2006-10-11
    • EP06251920.2
    • 2006-04-05
    • Ricoh Company, Ltd.
    • Kondo, Takafunmi c/o Ricoh Company, LtdIto, Hideto c/o Hasama Ricoh, Inc
    • B21D28/24B21D31/02
    • B21D28/34B21D28/24B21D28/26B21D31/02
    • The invention provides a process, a die (1) and a mold structure for producing a metal base plate (5) having a cylindrical projected portion (11) formed with at least one slit (10) which extends from a leading end toward a base end of the cylindrical projected portion (11) by inserting a punch (3) into a die (1) through a metal base plate (5). In the producing process, the metal base plate (5) is interposed between the punch (3) and the die (1), while a hole of the die (1) having at least one projected portion (2) and the punch are aligned with a location of the cylindrical projected portion (11) to be formed and at least one ridge line (4) of a leading end portion of the punch (3) and an apex portion of the corresponding at least one projected portion (2) of the die are aligned with each other, and the punch (3) is inserted into the hole of the die through the metal base plate (5) in such a manner that the at least one slit (10) of the cylindrical projected portion (10) is formed by an edge portion of a peripheral surface of the punch (3) and the corresponding at least one projected portion (2) of the die (1) by the insertion of the punch (3) into the hole of the die (1)
    • 本发明提供了一个过程,一个所述(1)和用于生产具有一个圆柱形凸起部分的金属基板(5)的模具结构(11)形成有至少一个狭缝(10),其从前端朝向基部延伸 通过经由金属底板(5)插入的冲头(3)到A(1)的圆柱形凸出部分(11)的端部。 在该制造过程中,金属基底板(5)被插置在冲头(3)和模具(1)之间,(1)具有模具的孔的至少一个突出部分(2)和所述冲头被对齐而 与圆柱形突出部分的位置(11)形成,并且至少一个棱线(4)在对应的至少一个突出部分的顶点部的冲头(3)的前端部的和(2)的 模具相互对准,并且在冲头(3)被插入到所述管芯的通过金属底板上的孔(5)(在寻求一种方式DASS死圆柱形凸出部10的至少一个狭缝(10) )通过在冲头(3)的外周表面的边缘部分形成,并且所述对应的至少一个突出部分(2)的模具(1)由冲头(3)的插入所述模具的孔(的 1)