公开(公告)号：US3664406A

公开(公告)日：1972-05-23

申请号：US3664406D

申请日：1969-12-01

申请人： HOOKER CHEMICAL CORP

发明人： MAWSON DESMOND LEONARD ,  MALONE BERNARD

IPC分类号： B22C21/00 ,  B22C23/00 ,  B22C13/02 ,  B22C5/12

CPC分类号： B22C21/00 ,  B22C23/00

摘要： An apparatus is provided for use in producing shell molds particularly suited to stack molding operations. In one embodiment, there is provided an electrically heated pressure plate which is arranged above the pattern frame so that it can be lowered by means of a pneumatic cylinder to compact and cure granular material treated with a bonding agent, such as resin coated sand, in the core box. In another embodiment in which the apparatus is used to make hollow shell molds, the heater plate above the core box is replaced by an electrically heated or gas heated hood. In this arrangement, the pattern frame is hinged so that it can be inverted to remove surplus sand from the pattern frame, after which the heated hood is lowered by means of a pneumatic cylinder to a position over the pattern frame to cure the back of the shell mold. The resulting cured sand molds are ready for immediate use in stack molding without further handling.

摘要翻译： 提供了一种用于生产特别适用于堆叠成型操作的外壳模具的设备。 在一个实施例中，提供了一种电加热压板，其设置在图案框架上方，使得其可以通过气缸降低，以压实和固化用粘合剂（例如树脂涂覆的砂）处理的颗粒材料 核心框。 在该设备用于制造空心模具的另一实施例中，芯盒上方的加热器板被电加热或气体加热的罩代替。 在这种布置中，图案框架被铰接，使得其可以被倒置以从图案框架中去除多余的沙子，之后加热的罩子通过气动缸降低到图案框架上方的位置以固化 壳模。 所得到的固化砂模具可立即用于堆叠成型，而无需进一步处理。