A three-legged ejector sleeve is adopted in the die casting mould to take cast stripping mould, the problem that the cast difficultly demould is solved.
The first commercial deployment was a programmable industrial robot called the Unimate, sold to General Motors in 1960 to lift hot pieces of metal from a die casting machine and stack them.
推管推出铸件，
决了轴套铸件
的问题。
工业机器
，于1960年售予
车公司，
