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Method for manufacturing intermittently-fixed tape core

A manufacturing method and optical fiber technology, which is applied in the field of manufacturing intermittently fixed cored wires, can solve the problems of increased optical transmission loss, increased optical fiber transmission speed, and unstable range of joint formation, so as to improve manufacturing efficiency and stabilize the range Effect

Inactive Publication Date: 2019-07-16
THE FUJIKURA CABLE WORKS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, if the connecting portion is formed beyond a predetermined range, for example, the relative movement of the optical fibers accommodated in the cable becomes difficult, microbending or lateral pressure is applied to the optical fibers, and the transmission loss of light increases. big possibility
[0007] In addition, the phenomenon that the formation range of the connecting portion becomes unstable as described above becomes noticeable especially when the feeding speed of the optical fiber is increased when manufacturing the intermittently fixed tape core, and thus becomes a problem in improving the manufacturing efficiency.

Method used

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  • Method for manufacturing intermittently-fixed tape core
  • Method for manufacturing intermittently-fixed tape core
  • Method for manufacturing intermittently-fixed tape core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In this example, studies were conducted to confirm the advantages of the above-described manufacturing method.

[0035] Specifically, after the optical fibers 1 are collectively coated as described above, the transport speed V1 at the time of transporting them to the rotary blade 21 is changed. The peripheral velocity V2 is set constant. Then, as the intermittently fixed core wire 10 of Example 1, an intermittently fixed core wire in which the coating material 2 was partially cut off by the rotary blade 21 to form the connecting portion 2 a was produced.

[0036] In addition, in Example 1, as the optical fiber 1, the colored fiber optic core wire. In addition, the number of optical fibers 1 included in the intermittent fixed tape core wire 10 was set to twelve. The conveyance speed V1 of the optical fiber 1 to be coated together is varied in the range of 200 to 1200 (m / min).

[0037]Furthermore, in order to compare with this Example 1, the uncured resin which will ...

Embodiment 2

[0044] In the present embodiment, studies concerning the ratio of the conveying speed V1 to the peripheral speed V2 of the rotary knife 21 were conducted.

[0045] Specifically, as fiber 1 used the After coating 12 of the colored optical fiber core wires, the coating material 2 was partially cut with the rotary knife 21 to form the connecting portion 2a. At this time, the ratio of the conveyance speed V1 to the peripheral speed V2 is changed. Moreover, when changing this ratio, if the same rotary blade 21 is used, the length of the connection part 2a and the separation part 2b in the longitudinal direction X will change. Therefore, in this embodiment, the number of notches 21b provided in the rotary blade 21 is changed by changing the ratio of the conveying speed V1 to the peripheral speed V2, and the lengths of the connecting portion 2a and the separating portion 2b are adjusted to be constant. . For example, when V1:V2=4:1, the rotary blade 21 with eight notches 21b is u...

Embodiment 3

[0054] In the present embodiment, the preferred shape of the rotary blade 21 was studied.

[0055] Specifically, prepared to change image 3 The various types of rotary blades 21 having the ratios of b1 and n1 shown above were used to produce the intermittent fixed tape core wire 10 . The position and number of the cutouts 21b of the above-mentioned rotary blade 21 and image 3 Same as shown. That is, the rotary blade 21 provided with a pair of notch part 21b in the radially opposing position across the central axis O is used. Each of the rotary blades 21 has a point-symmetrical shape with respect to the central axis O. As shown in FIG. Therefore, n1=n2, b1=b2. In addition, n1:b1=n2:b2=N:B. The ratio of n1 to b1 (that is, the ratio of the length N of the connection portion to the length B of the cut portion) is changed within the range of 3:1 to 1:25.

[0056] In addition, in this example using The colored optical fiber core wires of the above-mentioned colored optical...

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Abstract

A method for manufacturing an intermittently-fixed tape core, said method having: a step in which an uncured coating material is coated so as to intrude between multiple optical fibers and is cured, thereby collectively covering the multiple optical fibers with the coating material; and a step in which, while feeding the collectively covered multiple optical fibers in the longitudinal direction ata velocity V1, multiple rotating blades arranged in a line in the width direction orthogonal to the longitudinal direction are used to cut the coating material located between the multiple optical fibers at prescribed intervals in the longitudinal direction. The velocity V1 is greater than the peripheral velocity V2 of the rotating blades.

Description

technical field [0001] The invention relates to a manufacturing method for intermittently fixing tape core wires. [0002] This application claims priority based on Japanese Patent Application No. 2016-254763 for which it applied in Japan on December 28, 2016, and uses the content here. Background technique [0003] In recent years, intermittently fixed optical fiber ribbons (hereinafter, simply referred to as intermittently fixed ribbons) in which connecting portions connecting adjacent optical fibers are intermittently arranged in the longitudinal direction of the optical fibers have been proposed. The intermittently fixed ribbon core has the advantages that optical fibers can be installed at a high density in the optical fiber cable, and these optical fibers can be easily fusion-spliced ​​together during connection work. For example, Patent Document 1 below discloses such an intermittently fixed tape core wire manufacturing method. [0004] In the manufacturing method o...

Claims

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Application Information

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IPC IPC(8): G02B6/44
CPCG02B6/4403G02B6/448G02B6/4486G02B6/44G02B6/4471
Inventor 关根静香伊佐地瑞基富川浩二
Owner THE FUJIKURA CABLE WORKS LTD