Method for manufacturing glass-base-material by measuring the weight of the material
An apparatus for manufacturing a glass-base-material, which is a base material of an optical fiber, includes a driving unit that drives a glass rod around an axis of the glass rod; a burner for accumulating glass soot around outside surface of the glass rod, which is driven by the driving unit, to form the glass-base-material; a weight-deducting unit, on which the driving unit is mounted, for deducting a predetermined weight from a total weight of the driving unit and the glass-base-material formed by the burner; and a measuring unit provided under the weight-deducting unit for measuring the total weight, from which the predetermined weight is deducted by the weight-deducting unit.
1. A method for manufacturing a glass-base-material, which is a base material of an optical fiber, comprising:
driving a glass rod using a driving unit;
accumulating glass soot around an outside surface of said glass rod driven by said material and said driving unit;
deducting a predetermined weight from a total weight of said glass-base-material and said driving unit;
measuring said total weight, from which said predetermined weight is deducted by said deducting; and
controlling a rate of increase in weight of said glass-base-material based on said total weight measured by said measuring,
wherein said deducting said predetermined weight comprises using a weight deducting unit comprising a base supported by a supporting member, said base comprising a first part and a second part opposite to said first part with respect to said supporting member, and a counterweight mounted on said second part of said base, and said driving unit comprising a first section mounted on said first part and a second section mounted on said second part.
2. A method as claimed in claim 1 , wherein said counterweight mounted on one end of said base supported by said supporting member rotates around said supporting member,
wherein said weight of said driving unit and said glass-base-material are applied on said base, and
wherein weight applied on another end of said base is measured.
3. A method as claimed in claim 1 , wherein said base supported by said supporting member rotates around said supporting member.
4. A method as claimed in claim 1 , wherein said counterweight mounted on said base balances a weight of said driving unit with a weight of said glass-base-material.
5. A method as claimed in claim 1 , further comprising:
displaying a measured weight of said glass-base-material.
6. A method as claimed in claim 1 , wherein a weight of said glass-base-material is measured at a predetermined time interval.
7. A method as claimed in claim 1 , further comprising:
controlling a supply of raw material for said accumulating glass soot to control said rate of increase in weight of said glass-base-material.