Aimed at the disadvantage existed in the bulging terminals forming mold of,φ400mmPVC pipe material, φ400mm PVC mold with eight sliding blocks is designed, this mold has high precision measure, stable performance and low manufacture cost, the application in actual practice has shown good results.

Design of pneumatic arc core-pulling crank slide mechanism;

CMETGuarantee of Slide Moving Accuracy of Series JH25 Two Point Press;

Research on position of maximum slider velocity in slider-crank mechanism;

The die, which can be once-forming bracket on the process of upper die going down, solves above-mentioned issues and improves the accuracy of working parts, by utilizing the structure of downwards slanting wedge and upper slider.

An injection mould with open-type cavity and slide block type of ejection mechanism was developed after an analysis on the forming process of a slicing insulating cover plate.

In die designing, the use of slide block is very extensive, but using too many slide blocks, it is very difficult for assembling and testing.

A structure combining slide block core-pulling and locating of metal insert was designed for forming a combined socket.

Discussion on technological superiority of the sliding block placing at fixed half of mould for reusable container;

Design of bulging die with sliding block for PVC pipe;

The effect of sliding block feed on the workpiece quality and rolling roller life is analyzed.