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.
三脚推管推出铸件，
决了轴套铸件脱模
题。
1960 
用汽车公司，用
