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Fiber drawing furnace

A wire drawing furnace and furnace body technology, which is applied in glass manufacturing equipment, manufacturing tools, etc., can solve the problems of difficult alignment of multiple optical fiber rods, affecting the quality of optical fiber panels, waste of optical fiber rod materials, etc., to improve positioning difficulties , reduce quality fluctuations and improve quality

Pending Publication Date: 2017-03-22
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the drawing process of optical fiber, limited by the size and structure of the furnace mouth, the binding rod sleeve can only reach the furnace mouth during the feeding process and has to stop, resulting in a large waste of material at the end of the optical fiber rod. In addition, the optical fiber The position of the rod in the furnace directly affects the wire diameter accuracy of the wire drawing. At present, there is a problem of difficulty in aligning the position of the compound optical fiber rod, which will seriously affect the quality of the optical fiber panel

Method used

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  • Fiber drawing furnace
  • Fiber drawing furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] see figure 2The wire drawing furnace of this embodiment includes a furnace wall 2, an insulating body 4, an upper insulating brick 3, a heating element 5, a furnace tube 8, a furnace tube base 7, a lower insulating brick 6, a furnace cover 1, and an insulating body is arranged inside the furnace wall 2 4. The upper insulation brick 3 is arranged between the insulation body 4 on the upper part of the furnace body 200 and the furnace wall 2, the lower insulation brick 6 is arranged between the insulation body 4 on the lower part of the furnace body 200 and the furnace wall 2, and the inner side of the insulation body 4 is surrounded by a cylinder Shaped heating element 5, the inner wall of the through hole of the lower furnace mouth 210 formed by the lower insulating brick 6 is inclined, and the inclined surface supports the lower end of the furnace tube base 7, and the center of the furnace tube base 7 has a hole, and the furnace tube 8 is placed on the furnace tube base...

Embodiment 2

[0035] The difference between this embodiment and Embodiment 1 lies in that the included angle between the axis of the material inlet 104 of the furnace cover 1 and the inner wall surface of the material inlet 104 is 5°.

[0036] Use the drawing furnace of this embodiment to draw the composite optical fiber, and check the performance of the drawn composite optical fiber: during the drawing process of the composite optical fiber, use an optical fiber caliper to measure the accuracy of the fiber diameter and The ellipticity is tested, the fiber diameter accuracy is ±10μm, the ellipticity is below 100, the structure is regular, and the material utilization rate of the compound optical fiber rod is increased by more than 10%. During the drawing process of the compound optical fiber rod, the fiber rod is very easy Adhesion to the furnace cover will affect the diameter of the fiber and cause its accuracy to deteriorate. It can be seen from the comparison between this embodiment and ...

Embodiment 3

[0038] The difference between this embodiment and Embodiment 1 lies in that the axial thickness of the boss 301 protruding into the furnace cavity 400 below the upper insulation brick 3 is 2mm.

[0039] Use the drawing furnace of this embodiment to draw the composite optical fiber, and check the performance of the drawn composite optical fiber: during the drawing process of the composite optical fiber, use an optical fiber caliper to measure the accuracy of the fiber diameter and The ellipticity is tested, the fiber diameter accuracy is ±8μm, the ellipticity is below 200, the structure is regular, and the material utilization rate of the compound optical fiber rod is increased by more than 10%. In the process of drawing the compound optical fiber rod, the fiber rod is very easy Adhesion to the furnace cover will affect the diameter of the fiber and cause its accuracy to deteriorate. Through the comparison between this embodiment and embodiment 1, it can be seen that since the ...

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Abstract

The invention discloses a fiber drawing furnace comprising a furnace body and a furnace cover. A furnace cavity is formed in the furnace body, an upper furnace opening in the upper end of the furnace body is opposite to a lower furnace opening in the lower end of the furnace body, the upper furnace opening and the lower furnace opening are communicated with the furnace cavity, the furnace cover comprises a sinking body and an outer edge formed through extension on the outer wall of the sinking body in the radial direction, the outer edge is clamped to the upper end of the furnace body, the sinking body below the outer edge sinks into the furnace body from the upper furnace opening, an axial countersunk groove is formed in the upper end of the sinking body, and the bottom of the countersunk groove is provided with a material inlet communicated with the furnace cavity. The fiber drawing furnace reduces waste of composite optical fiber rob tail materials, and cost is reduced.

Description

technical field [0001] The invention relates to the technical field of optical fiber panel manufacturing, in particular to a drawing furnace. Background technique [0002] The process of making optical fiber panels is to first pull out the composite optical fiber filaments, then cut the composite optical fiber filaments to a fixed length, arrange them in the arrangement mold, and then heat press and carry out subsequent processing. The drawing of optical fiber is to hang the optical fiber rod tightly on the furnace cover of the drawing furnace by binding the rod sleeve. The glass rod entering the drawing furnace from the opening of the furnace cover is melted at high temperature, and then it is carried out under the drawing furnace after melting. Traction drawing. [0003] At present, the drawing furnace adopted by the inventor consists of a furnace body, a furnace wall, an insulating layer and a heating body, a furnace cavity is formed in the furnace body, and a furnace co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/029
CPCC03B37/029
Inventor 王三昭张弦许慧超
Owner CHINA BUILDING MATERIALS ACAD