Glass base material elongating method and glass base material elongating apparatus
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United States of America Patent
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Jan 9, 2018
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app pub date -
May 13, 2016
filing date -
May 2, 2012
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Abstract
A glass base material elongating method of sequentially feeding rod-like glass base materials hung by a glass base material feeding mechanism into a heating furnace, and pulling a glass rod with a smaller diameter by a pulling chuck at a lower part of the heating furnace, includes: aligning, by an alignment guiding device that guides the glass rod, a guiding center of the alignment guiding device with an axis of the glass rod, the alignment guiding device guiding the glass rod between the heating furnace and the pulling chuck.
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