Injection molding method and injection molding apparatus
    1.
    发明公开
    Injection molding method and injection molding apparatus 有权
    Spritzgiessverfahren und Spritzgiessvorrichtung

    公开(公告)号:EP1498250A2

    公开(公告)日:2005-01-19

    申请号:EP03255076.6

    申请日:2003-08-15

    摘要: The present invention provides an injection molding method which intends to lower a mold clamping force in view of both of a projected area of a molded article and an injection pressure, and contributes to an energy saving and a reduction in a cost of equipment and a manufacturing cost. In a cavity (13) formed in a metal mold (5) for an injection molding, there are arranged a first gate (21) injecting a first molten resin (101) anteceding in one end side (a charging start side) in a longitudinal direction, and a second gate (22) injecting a second molten resin (102) following in another end side (a charging finish side). The second molten resin (102) is newly injected from the second gate (22) before a fluid head portion of the first molten resin (101) injected from the first gate (21) reaches a position of the second gate (22). Further, the first molten resin (101) becomes in an approximately cooled and solidified state by the time when the second molten resin (102) reaches a terminal end in the charging finish side within the cavity (13).

    摘要翻译: 本发明提供了一种注塑成型方法,其考虑到模制品的投影面积和注射压力两者都降低模具夹紧力,并且有助于节省设备和制造成本的降低 成本。 在形成于注射成型用金属模具(5)上的空腔(13)中,设置有:第一浇口(21),在第一浇口(21)的纵向方向上注入一端(充电开始侧)前端的第一熔融树脂 并且在另一端侧(充电完成侧)中注入第二熔融树脂(102)的第二浇口(22)。 在从第一浇口(21)注入的第一熔融树脂(101)的流体头部分到达第二浇口(22)的位置之前,第二熔融树脂(102)从第二浇口(22)重新注入。 此外,第一熔融树脂(101)在第二熔融树脂(102)到达空腔(13)内的充电完成侧的终端时变成近似冷却和固化的状态。