In order to promote domestic injection molding equipment with air assistant, introduced theconstructed the key technique of the equipment based on the traditional injection molding equipment,pointed out the construction of air injection system and the requirements for injection machine and injec-tion mold.

It is achieved to fill rock powdery emulsion explosive with ZY6II automatic loader by improving its screw rod,and pneumatic control system and adding a U stop prate in its container.

This paper analyzes the problems occurred to a fined coal bunker arc-shaped valve pneumatic control system during its operation and at meantime an economic and practical version to modify the pneumatic control system to a hydraulic control system is proposed.

By using remote controller, the operator can automatically control the vehicles clutch on - off, gearshift and steering through pneumatic control system and electronic remote - control system.

Development of a balloon control system for the processing of man-made fibers;

The electric controlling system performed its function of automatic material feeding and bending-plane changing completely depending on the progra.

By analysing the electric controlling system of QBT80/45 dual-purpose tower crane used to lift cloth, the authors establish it s reliabitily model and caculate the reliability of this electric controlling system with several methods.

Thinking and method of transformation electric controlling system of ?? 6130 type 100t multiple station alltomatic press with PLC were introduced,it\'s work principle was expounded.