The present invention, is attached to the front panel support bar in contact with the elastic mold directly to the door to be opened and closed by rotating In the mold for use in electronic equipment variable spring moment is adjusted by the size of the elastic restoring force to form a cutting link variably, moment and the upper mold for defining an outer shape other than the upper surface of the variable spring, an upper mold and a spaced apart arrangement and variable moment and a lower mold that define the internal shape of the spring, and the moment of defining the outer shape of the upper surface of the variable spring, the bolt so as to variably forming a cutting link comprises a sliding mold installed to be protruded characterized. Thus, a mold for variable spring moment according to the invention it is not necessary to separately manufacture the mold in order to change the number of cutting links mold production cost is reduced, without the need to cut the shape, depending on the number of links to replace the other mold Simply bolt height adjustment only because the production efficiency is increased by shortening the process time, a variety of size and shape of the spring in the manufacture of a wide range of variable moment of cutting the number of links for the different door cost and time burden ever applied to the small quantity batch production, so Easy to have effect.
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