公开(公告)号：US06804983B2

公开(公告)日：2004-10-19

申请号：US10179223

申请日：2002-06-26

申请人： Yoshio Mori ,  Shinkichi Nagami

发明人： Yoshio Mori ,  Shinkichi Nagami

IPC分类号： B21D2402

CPC分类号： B21D24/02

摘要： A gas cushion apparatus with a support member to hold a blank, gas pressure cylinders that push the support member upwards, a hydraulic cylinder whose upper rod is connected to the support member, a pneumo-hydraulic converter for secondary lifting with a piston that partitions the interior into an oil chamber communicating with the oil chamber on the side of the rod of the hydraulic cylinder and a gas chamber, a check valve that allows oil to flow from the oil chamber on the side opposite to the above-mentioned rod to the oil chamber on the side of the aforementioned rod, and a drain port communicating with the oil chamber on the side of the above-mentioned rod of the hydraulic cylinder.

摘要翻译： 一种气垫装置，其具有用于保持空白的支撑构件，将所述支撑构件向上推动的气体压力缸，其上杆连接到所述支撑构件的液压缸，用于二次提升的气动液压转换器， 内部进入与液压缸的杆侧的油室连通的油室和气室，允许油从油室在与上述杆相反的一侧流到油的止回阀 在上述杆的一侧的腔室，以及与液压缸的上述杆侧的油室连通的排水口。