However,a new mechanism,mechanism of screw arbor with large helical angle,is adopted for automatically rotational screw thread unloading in the designed die casting die.

• 该机构利用压铸机开模为螺纹型芯旋转脱模提供动力,通过大螺旋角螺杆机构将压铸机开模的直线运动,转变为螺纹型芯旋转运动,实现螺纹铸件自动脱模。