In order to solve the problems in gracile conical tube casting requiring overlong core-pulling distance and difficult mould-release

a die casting die with a special core-pulling mechanism has been designed. Pin-floating slider mechanism were adopted in the die

which can make the floating slider not only move along the drawing-core direction but also float along the pulling direction. Firstly

pin-floating slider mechanism performed short-distance drawing-core

and then the pulling-mechanism drives the slider and core along pulling castings direction to pull out the castings from the moving container

which greatly reduce mould-opening distance and production cost

and can improve product efficiency. The die can successfully produce the castings with no mark and high quality defects. The processing characteristics of tube was analyzed

and the structure design and operation of die casting die were approached in detail.