The type of collecting cover of secondary gas cleaning and dust-removing device is introduced, the difference between the traditional ones and this illustrated, the shortcomings of those pointed out, the reasonableness of top absorbing cover analyzed, the feasibility of this process proved by the live-testing data.

This article narrated the lamp cap injection mold design and the manufacture method, analyzed structural design of the mold various part and the working process, elaborated choice of the injection machine in detail and the mould frame size parameter examination computation.