Application of die structures such as bending,crossover taking out core,coining,expanding,punch riveting were presented.

The core pulling structure of the mold was introduced in detail,and the drawing-core force and slanting pillar were checked.

If the casting is taken out from the moving die, long distance core pulling is needed according to the shape of the casting, so the mechanism of the sliding block which rotates midway was designed.

Because the casting needs three direction core pulling,in order to keep the core pulling f.

Development of injection mould with core-pulling mechanism in fixed half for mobile phone front shell;

Design of mould with multiway internal and external core-pulling for mouse shell

Through analyzing the characteristics of the plastic structure, a simple core-pulling structure was designed, solved the diffcult points of demould the inside hole .

Selecting and using of loose core hydrocylinder in injection mold;

Formwork design of one overpass work and case analysis;

TEDA Pedestrian Overpass and Sunken Plaza——Partial Urban Design for the Central District of TEDA;

There are total 61 overpasses in construction drawings design for Hubei Xiangfan-Jinzhou Expressway.

The paper expounds the key points about bridge and culvert design in the engineering of reducing the subgrade height of Puyang Section of Puyang-Xinyang Expressway,and indicates adding the flying gangway and underground passage to solve the water accumulation in passages,obtains the design goal of reducing the subgrade height.