Clinical characteristics and therapy of frontal medial surface injury;

By analying the structure of battery box, a kind simple and the convenient processing mold structure is determined, problem of inside core-pulling is solved, moreover, it can reduce the mold cost greatly.

The handle with turns on plastic fittings has a special external form, the inside counterbore of the short cylinder-shaped turret head on its end needs inside core-pulling, this paper elaborately introduced the characteristics of the die design and the design key points and attention items of employing inclined push rod structure.

Design of injection mould for a part with internal concave;