KR-102962549-B1 - APPARATUS FOR MANUFACTURING OPTICAL FIBER COIL

KR102962549B1KR 102962549 B1KR102962549 B1KR 102962549B1KR-102962549-B1

Abstract

According to one embodiment of the technical concept of the present disclosure, an optical fiber coil manufacturing apparatus is disclosed, comprising: a winding unit for winding an optical fiber onto a spool to form an optical fiber coil; a potting unit spatially separated from the winding unit and potting the optical fiber coil with an adhesive; and a transfer unit disposed between the winding unit and the potting unit and transferring the optical fiber coil from the winding unit to the potting unit while maintaining its shape.

Inventors

정경호
안준은
박병수
이상우
엄해동
강수봉

Assignees

국방과학연구소

Dates

Publication Date: 20260507
Application Date: 20250403

Claims (11)

A winding unit that winds an optical fiber onto a spool to form an optical fiber coil; A potting unit spatially separated from the winding unit by a separate chamber and potting the optical fiber coil with an adhesive; and A transfer unit disposed between the winding unit and the potting unit, and transferring the optical fiber coil from the winding unit to the potting unit while maintaining its shape; comprising, The above winding unit is, A spool support module that rotatably supports the above spool; A first and second optical fiber supply module that alternately supplies the optical fiber to the spool at a preset winding position so that the optical fiber is wound in an orthogonal winding manner on the spool supported by the spool support module to form the optical fiber coil; A moving module for moving the first and second optical fiber supply modules to the winding position; An optical fiber alignment module that aligns the optical fiber through a guide pin positioned at one end while the optical fiber is wound onto the spool; and A fiber optic coil manufacturing device comprising: a transport module for transporting the fiber optic coil wound on the spool to the transport unit.
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In Article 1, The optical fiber alignment module includes a first camera that captures the state in which the optical fiber is wound on the spool, and The first and second optical fiber supply modules adjust the tension of the optical fiber supplied to the spool based on an image acquired by the first camera. Fiber optic coil manufacturing device.
In Article 1, The optical fiber coil is an optical fiber coil manufacturing device having any one of a 4-pole, 8-pole, 16-pole, and 32-pole winding pattern.
In Article 1, The above transfer unit is, Chamber; A carrier disposed inside the chamber and on which the spool on which the optical fiber coil is wound is seated; and A transfer means disposed inside the chamber and transferring the carrier; A fiber optic coil manufacturing device including
In Article 5, The above carrier is an optical fiber coil manufacturing device comprising at least one adsorption hole for vacuum adsorbing the optical fiber coil so as to maintain the shape of the optical fiber coil.
In Article 6, The spool on which the optical fiber coil is wound is combined with a first holder and seated on the carrier, and The first holder above is, 1st base; A first recess area on one side of the first base for accommodating the spool on which the optical fiber coil is wound; and At least one opening penetrating the first base and communicating with the adsorption hole of the carrier; A fiber optic coil manufacturing device including
In Article 5, The above transfer unit is, A cleaning module that sprays ionized air through the above optical fiber coil; A fiber optic coil manufacturing device further comprising
In Article 1, The above-mentioned potting unit is, vacuum chamber; A container disposed inside the vacuum chamber, wherein the spool on which the optical fiber coil is wound is seated inside; A plate disposed inside the vacuum chamber and having the container seated on one surface; and An adhesive injection module that supplies the adhesive to the container inside the vacuum chamber so that the optical fiber coil is potted with the adhesive; A fiber optic coil manufacturing device including
In Article 9, The spool on which the optical fiber coil is wound is combined with a second holder and seated in the container, and The above second holder is, 2nd base; A second recess area on one side of the second base for accommodating the spool on which the optical fiber coil is wound; and An injection channel penetrating the second base for injecting the adhesive; A fiber optic coil manufacturing device including
In Article 9, The above-mentioned potting unit is, curing chamber; and A rotating module disposed inside the curing chamber, supporting the spool on which the optical fiber coil is wound with the adhesive injected, and rotating the spool; A fiber optic coil manufacturing device further comprising

Description

Apparatus for Manufacturing Optical Fiber Coil The technical concept of the present disclosure relates to an apparatus for manufacturing optical fiber coils, and more specifically, to an apparatus for manufacturing optical fiber coils for optical fiber gyroscopes. Fiber Optic Gyroscopes (FOGs) are high-precision inertial sensors that detect rotational motion using the Sagnac effect and are widely used in the aerospace, marine, and defense industries. Since fiber optic gyroscopes detect rotational angular velocity by measuring the phase difference between two lights traveling clockwise and counterclockwise within the fiber coil, their performance depends heavily on the quality of the fiber coil. In particular, because minute differences in the manufacturing quality of the fiber coil directly affect the bias stability and scale factor of the fiber optic gyroscope, the production of high-quality fiber coils is essential for high-precision fiber optic gyroscopes. Winding and potting processes are essential for the manufacture of optical fiber coils, and the technical conditions required for each process differ to produce high-quality coils. For example, the winding process requires precise control of optical fibers exceeding several hundred meters in length with constant tension to improve the uniformity and geometric symmetry of the winding pattern. Conversely, the potting process requires precise control of adhesive injection, curing temperature, and environmental conditions to achieve uniform adhesive concentration and thickness. Due to such process requirements and environmental differences, it is common practice to use separate equipment and require operator intervention for each process. However, this approach can lead to quality degradation of optical fiber coils caused by physical impact or contamination during operator intervention. As an alternative, integrating each process into a single unit to minimize operator intervention can be considered; however, this approach faces various limitations, such as increased design complexity for integration devices, limitations in optimization, idle resources resulting from differences in processing times between processes, reduced cost efficiency, and contamination of winding process equipment due to the nature of the potting process which utilizes adhesives. Therefore, the development of an automated device is required to solve these problems and manufacture high-quality optical fiber coils. A brief description of each drawing is provided to help to better understand the drawings cited in the present disclosure. FIG. 1 is a block diagram schematically illustrating an optical fiber coil manufacturing apparatus according to one embodiment of the present disclosure. FIG. 2 is a drawing for explaining a winding unit according to one embodiment of the present disclosure. FIG. 3 is a drawing for explaining an optical fiber supply module according to one embodiment of the present disclosure. FIGS. 4a and FIGS. 4b are drawings for explaining a winding method according to one embodiment of the present disclosure. FIG. 5 is a drawing for explaining an example of optical fiber alignment using an optical fiber alignment module according to one embodiment of the present disclosure. FIG. 6 is a cross-sectional view of an optical fiber coil formed by a winding unit according to one embodiment of the present disclosure. FIG. 7 is a drawing for explaining a transfer unit according to one embodiment of the present disclosure. FIG. 8 is a drawing for explaining a potting unit according to one embodiment of the present disclosure. Exemplary embodiments according to the technical concept of the present disclosure are provided to more fully explain the technical concept of the present disclosure to those skilled in the art, and the following embodiments may be modified in various different forms, and the scope of the technical concept of the present disclosure is not limited to the following embodiments. Rather, these embodiments are provided to make the present disclosure more faithful and complete and to fully convey the technical concept of the present invention to those skilled in the art. In this disclosure, terms such as "first," "second," etc. are used to describe various members, regions, layers, parts, and/or components; however, it is obvious that these members, parts, regions, layers, parts, and/or components should not be limited by these terms. These terms do not imply a specific order, hierarchy, or superiority, and are used solely to distinguish one member, region, part, or component from another. Accordingly, the first member, region, part, or component described below may refer to the second member, region, part, or component without departing from the teachings of the technical concept of this disclosure. For example, without departing from the scope of rights of this disclosure, the first component may be named the second component, and similarly, the second compo