大螺旋角螺杆脱螺纹压铸模

铸件螺纹脱模是压铸模设计的难点之一。自动旋转脱螺纹一般采用齿轮-齿条机构或液压-齿轮机构,大螺旋角螺杆脱螺纹机构则是一种新机构。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。无需外接脱螺纹动力装置,节省模具成本,提高了铸件生产的可靠性。

Die Casting Die with Screw Arbor with Large Helical Angle for Screw Thread Unloading

In the design of die casting die with screw thread,the automatic screw thread unloading is a difficult point.A toothed rack is commonly adopted for the automatic screw rotational unloading.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.The mechanism uses the open-die of die casting machine to provide the power for rotation of the core with screw thread,in which the mechanism of screw arbor with large helical angle changes the rectilinear movement of the open-die of die-casting machine to rotation of the core with screw thread,realizing the automatic screw thread unloading,which can improve the reliability of the production and save the die cost.