CN-117735831-B - Optical fiber twisting device and optical fiber production system

CN117735831BCN 117735831 BCN117735831 BCN 117735831BCN-117735831-B

Abstract

The application relates to the technical field of optical fiber twisting, and aims to solve the technical problem of low twisting quality of known optical fibers and provide an optical fiber twisting device and an optical fiber production system. The optical fiber twisting device comprises a charge adding component and a magnetic field generating component. The charge attachment assembly is provided with an attachment channel for the optical fiber to pass through, and the charge attachment assembly is used for attaching charges on the surface of the optical fiber. The magnetic field generating assembly is arranged on one side of the charge adding assembly, the magnetic field generating assembly defines a torsion channel, the torsion channel is arranged in a penetrating mode along a first direction, the torsion channel is provided with a first central axis, the torsion channel is used for enabling an optical fiber added with charges to pass through along the first direction, the magnetic field generating assembly is used for generating a magnetic field, and the magnetic field generating assembly is further used for controlling the magnetic field to rotate around the first central axis. The optical fiber with the electric charge passes through the torsion channel and can be twisted around the second central axis under the action of the rotating magnetic field. The application has the beneficial effects of improving the twisting quality and the production efficiency of the optical fiber.

Inventors

ZHU WEIHUA
ZOU RENQIANG
Shan Jiangdou
WEI CHENGDONG
WANG XINXIN
ZHAO JIARUI

Assignees

四川天府江东科技有限公司

Dates

Publication Date: 20260512
Application Date: 20231229

Claims (9)

1. An optical fiber twisting device, comprising: A charge adding component provided with an adding channel for an optical fiber to pass through, the charge adding component being used for adding charge on the surface of the optical fiber; The magnetic field generating assembly is arranged on one side of the charge adding assembly, the magnetic field generating assembly defines a torsion channel, the torsion channel is provided with a first central axis and used for allowing the optical fiber added with charges to pass through in the first direction, the magnetic field generating assembly is used for generating a magnetic field and controlling the magnetic field to rotate around the first central axis, the magnetic field generating assembly comprises two magnetic field generating pieces, the magnetic field generating pieces are respectively used for generating a composite magnetic field, the two composite magnetic fields form the magnetic field, the two composite magnetic fields respectively have composite magnetic field vectors, the two composite magnetic field vectors are perpendicular to the first central axis, the directions of the two composite magnetic field vectors are opposite and equal, the magnetic field generating pieces are also used for controlling the composite magnetic field vectors to rotate around the first central axis, and the rotating directions and the rotating speeds of the two composite magnetic field vectors are the same; Wherein when the optical fiber to which the electric charge is added passes through the torsion channel in a first direction and a second central axis of the optical fiber coincides with the first central axis, the optical fiber to which the electric charge is added can be twisted around the second central axis by the rotating magnetic field.
2. The optical fiber twisting device according to claim 1, wherein: The two magnetic field generating parts are oppositely arranged along a second direction, the second direction is perpendicular to the first direction, each magnetic field generating part is respectively provided with an arc surface, the two arc surfaces jointly enclose the torsion channel, and the distances between each arc surface and the first central axis are equal.
3. The optical fiber twisting device according to claim 1, wherein: The magnetic field generating piece comprises a plurality of magnetic field units, the magnetic field units are arranged at intervals around a first central axis, each magnetic field unit is respectively provided with a sub magnetic field, the sub magnetic fields are combined into a combined magnetic field, each sub magnetic field is respectively provided with a sub magnetic field vector, the directions of the sub magnetic field vectors are different from each other, each sub magnetic field vector is respectively perpendicular to the first central axis and intersects at the same point of the first central axis, and the magnetic field units are also used for controlling the magnitude and the direction of the sub magnetic field vectors so as to enable the combined magnetic field to rotate around the first central axis.
4. A fiber twisting device according to claim 3, wherein: The magnetic field unit comprises a plurality of exciting coils and a plurality of Helmholtz coils, the exciting coils and the Helmholtz coils are distributed around a third central axis in a staggered mode, the third central axis is perpendicular to the first central axis, the exciting coils are used for supplying alternating current to generate a first induction magnetic field, the Helmholtz coils are used for supplying direct current to generate a second induction magnetic field, and the first induction magnetic fields and the second induction magnetic fields are combined together to form the sub magnetic field; The magnetic field unit can control alternating current parameters of the exciting coil and direct current parameters of the Helmholtz coil so as to control parameters of the first induction magnetic field and parameters of the second induction magnetic field, and further control the magnitude and the direction of the sub-magnetic field vector.
5. The optical fiber twisting device according to claim 4, wherein: The exciting coils are three, the Helmholtz coils are three, and the three exciting coils and the three Helmholtz coils are located at six vertexes of a regular hexagon perpendicular to the third central axis.
6. The optical fiber twisting device according to claim 1, wherein: The charge adding component comprises a cathode part and an anode part, wherein the cathode part and the anode part are arranged at intervals along the length direction of the adding channel, an electron injection groove is defined between the cathode part and the anode part, the electron injection groove is communicated with the adding channel, and the cathode part and the anode part are used for being matched with each other to generate electric charges and add the electric charges to the surface of the optical fiber passing through the adding channel.
7. The optical fiber twisting device according to claim 1, wherein: The optical fiber twisting device further comprises a charge eliminating assembly, wherein the charge eliminating assembly is arranged on one side, away from the charge adding assembly, of the magnetic field generating assembly along the first direction, and is provided with a charge removing channel, and the charge removing channel is used for allowing the optical fiber subjected to twisting to pass through and eliminating surface charges of the optical fiber subjected to twisting.
8. The optical fiber twisting device according to claim 7, wherein: The inner surface of the electricity removal channel is provided with an annular air outlet, the annular air outlet is communicated with an inert air source, the inert air source is used for spraying charged inert air flow through the annular air outlet, and the charged inert air flow is used for contacting with the electric charges on the outer peripheral surface of the optical fiber, so that the surface electric charges of the optical fiber are eliminated.
9. An optical fiber production system, comprising: the optical fiber twisting device according to any one of claims 1 to 8; And the traction device is used for traction of the optical fiber so that the optical fiber passes through the optical fiber twisting device.

Description

Optical fiber twisting device and optical fiber production system Technical Field The application relates to the technical field of optical fibers, in particular to an optical fiber twisting device and an optical fiber production system. Background To improve the signal transmission effect of the optical fiber, a guide wheel is generally used to twist the optical fiber in the prior art. However, when the existing guide wheel twists the optical fiber, the problems of bending deformation and coating damage of the optical fiber are easy to occur, and even the problem of optical fiber breakage occurs, so that the twisting quality of the optical fiber is low. Disclosure of Invention The application provides an optical fiber twisting device and an optical fiber production system, which are used for solving the technical problem that the twisting quality of the known optical fiber is low. Embodiments of the present application are implemented as follows: In a first aspect, the application provides an optical fiber twisting device, which comprises a charge adding component, a magnetic field generating component and a twisting component, wherein the charge adding component is provided with an additional channel for allowing an optical fiber to pass through, the charge adding component is used for adding charges on the surface of the optical fiber, the magnetic field generating component is arranged on one side of the charge adding component, the magnetic field generating component limits a twisting channel, the twisting channel is provided with a first central axis in a penetrating way along a first direction, the twisting channel is used for allowing the optical fiber added with charges to pass through along the first direction, the magnetic field generating component is used for generating a magnetic field, the magnetic field generating component is further used for controlling the magnetic field to rotate around the first central axis, and when the optical fiber added with charges passes through the twisting channel along the first direction and a second central axis of the optical fiber is coincident with the first central axis, the optical fiber added with the charges can twist around the second central axis under the action of the rotating magnetic field. According to the optical fiber twisting device, the electric charges are added on the outer peripheral surface of the optical fiber through the electric charge adding component, when the optical fiber with the electric charges is moved relative to the magnetic field along the first direction, the electric current flowing along the first direction is formed at the optical fiber, so that under the action of the magnetic field, an induced magnetic field which is concentrically distributed from inside to outside is generated at the outer side of the optical fiber according to the right hand rule. When the magnetic field generating assembly controls the magnetic field to rotate around the first central axis, the Lorentz force between the magnetic field and the induced magnetic field also rotates along with the magnetic field and drives the optical fiber to twist. Therefore, when the optical fiber twisting device is used for twisting the optical fiber, the charged optical fiber can twist around the second central axis under the action of the magnetic field only by controlling the second central axis of the optical fiber to coincide with the first central axis, so that the spatial position of the optical fiber is unchanged in the twisting process, the bending deformation problem of the optical fiber in the twisting process is avoided, and the risk of breakage of the optical fiber is reduced. Meanwhile, the optical fiber is twisted under the action of the magnetic field, so that the twisting angle of the optical fiber is the same as that of the magnetic field, and the twisting of the optical fiber can be accurately and reliably controlled. And because the charge adding component is provided with the additional channel, the charge adding component can uniformly add charges to all the peripheral surfaces of the optical fibers passing through the additional channel, meanwhile, the magnetic field generating component is provided with the torsion channel, when the charged optical fibers pass through the torsion channel along the first direction, all the peripheral surfaces of the optical fibers can be subjected to the action of a magnetic field, so that the distribution of forces applied to the peripheral surfaces of the optical fibers under the action of the magnetic field is uniform, the space positions of the optical fibers can be further ensured to be kept fixed when the optical fibers are twisted under the action of the magnetic field, and the fracture risk of the optical fibers is further reduced. Therefore, the optical fiber twisting device can ensure the stability of optical fiber twisting, ensure the surface integrity of the optical fiber, ensure the stable dispe