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一、前 言 压铸件平面上有通孔,浇口就开在孔口上,这种中心浇口可最大限度地减少铸件在模具分型面上的投影面积,且具有金属液流程最短和有利排气等优点。中心浇口在立式压铸机上易于实现,但在卧式压铸机上,常采用复杂结构的定模附加分型面、增设液压或斜拉杆切料机构,或在浇口套上开设螺旋槽等措施来去除余料饼,实现开设中心浇口的目的。但是,这些方法都不能充分发挥机器的效能,本文介绍一种浮动式中心浇口,可以使卧式压铸机有效地适应更多类型的零件。
First, the introduction of die-casting plane through-hole, the gate opened on the hole, this center gate to minimize the cast parting surface in the mold projection area, and has the shortest liquid flow and favorable exhaust gas Etc. Center gate easy to achieve in the vertical die-casting machine, but in the horizontal die-casting machine, often using complex structure of the fixed mold additional sub-surface, additional hydraulic or diagonal rod cutting mechanism, or in the sprue set to open the spiral groove and other measures To remove more cake, to achieve the purpose of creating a center gate. However, none of these methods give full play to the effectiveness of the machine. This article presents a floating center gate that allows horizontal die-casting machines to effectively accommodate more types of parts.