Sealing device and sealing method for optical fiber preform tail handle

A technology of optical fiber preform and sealing device, which is applied in manufacturing tools, glass manufacturing equipment, etc., can solve the problems of high production cost, inability to achieve sealing, complicated process, etc., reduce the pretreatment process, avoid production hidden dangers, and reduce production difficulty Effect

CN111056741APending Publication Date: 2020-04-24TONGDING INTERCONNECTION INFORMATION CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-04-24

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Abstract

The invention provides a sealing device for an optical fiber perform tail handle, which comprises a quartz tail tube fixed on a rod hanging platform. A tail handle part of the preform is fixed at thelower end of the quartz tail tube, and a quartz assembly for realizing sealing sleeves a reducing area of the tail handle of the preform. According to the optical fiber preform tail handle sealing device provided by the invention, the preform pretreatment process is effectively reduced, the original tail handle does not need to be cut off and then subjected to rod hanging and wire drawing on a tail tube, and the production cost is reduced. And meanwhile, through reasonable structural design, the production hidden danger caused by a large reducing area at the tail part of the preform is avoided.
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Description

technical field

[0001] The invention belongs to the technical field of optical fiber production and manufacturing, and in particular relates to a sealing device and a sealing method for an optical fiber preform tail handle. Background technique

[0002] The optical fiber is drawn from a preform rod heated at high temperature. When the preform rod leaves the factory, the original shank is generally retained. Considering that the length of the original shank variable diameter area is different, when the preform tail rod enters the drawing furnace, it cannot achieve a perfect seal. Affecting the stability of the airflow in the drawing furnace and the loss of graphite parts in the drawing furnace, some optical fiber manufacturers will cut off the original tail handle and its variable diameter area, and then weld a quartz tail tube at the end of the optical fiber preform, and then use ordinary quartz The piece reaches the seal of the drawing furnace. However, the process of adop...

Examples

Embodiment Construction

[0029] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention Creation and simplification of description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should no...