CN-121978810-A - Optical fiber pre-tightening coiling device and method

CN121978810ACN 121978810 ACN121978810 ACN 121978810ACN-121978810-A

Abstract

The invention relates to the technical field of optical fiber device preparation and testing, in particular to an optical fiber pre-tightening coiling device and an optical fiber pre-tightening coiling method. The optical fiber pre-tightening coiling device comprises a coiling and stretching module, an adaptive pre-tightening loading module and an optical platform surface plate which is horizontally arranged, wherein the coiling and stretching module and the adaptive pre-tightening loading module are sequentially arranged along the stretching direction of an optical fiber and are fixed on the optical platform surface plate, the coiling and stretching module is used for dragging and guiding the optical fiber to coil in a spiral track, the adaptive pre-tightening loading module is used for applying an axial pre-tightening force with self-adaption direction to the optical fiber, and the adaptive pre-tightening loading module is dynamically adjusted in the coiling process to ensure that the direction of the pre-tightening force is always consistent with the axial direction of a stretched section of the optical fiber. The invention realizes that the pretightening force direction is always consistent with the axial direction of the stretched section of the optical fiber in the coiling process, thereby achieving the effects of improving the coiling stability and precision of the optical fiber and avoiding the damage of the optical fiber caused by lateral force.

Inventors

YANG BIAO
LUO YING
GUO YIBO

Assignees

上海国科航星量子科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260206

Claims (15)

1. The utility model provides an optic fibre pretension coiling device which characterized in that, including coiling tensile module, self-adaptation pretension loading module and the optical platform board package board that the level set up: The coiling and stretching module and the self-adaptive pre-tightening loading module are sequentially arranged along the stretching direction of the optical fiber and are fixed on the optical platform surface package plate; The coiling and stretching module is used for drawing and guiding the optical fiber to coil in a spiral track; the self-adaptive pre-tightening loading module is used for applying a directional self-adaptive axial pre-tightening force to the optical fiber; The self-adaptive pre-tightening loading module is dynamically adjusted in the coiling process to ensure that the direction of the pre-tightening force is always consistent with the axial direction of the stretched section of the optical fiber.
2. The fiber optic pre-tension coiling device of claim 1, wherein the coiling and stretching module comprises a fiber stretcher, a mounting plate, and a feed drive mechanism; the mounting plate is fixed on the optical platform surface wrapping plate; the optical fiber stretcher is coaxially connected with the feeding driving mechanism and is used as a carrier for coiling and stretching the optical fiber; The feeding driving mechanism is arranged on the mounting plate and used for driving the optical fiber to feed along the axial direction of the optical fiber stretcher and coiling the optical fiber around the optical fiber stretcher.
3. The optical fiber pre-tightening coiling device as in claim 2, wherein said mounting plate is an L-shaped mounting plate: The L-shaped mounting plate is provided with a substrate part which is horizontally arranged and fixed on the optical platform surface wrapping plate, and a supporting part which is vertically extended from the substrate part; The optical fiber stretcher and the feeding driving mechanism are both arranged on the supporting part.
4. The optical fiber pre-tightening coiling device as in claim 2, wherein said feed drive mechanism includes a feed screw disc: The feeding thread disc is connected with the mounting plate in a matching way and is provided with a fiber guide hole for the fiber to pass through; When the feeding thread disc is rotated, the feeding thread disc linearly moves along the axial direction of the optical fiber stretcher to drive the optical fiber penetrating through the fiber guide hole, so that the composite motion of circumferential rotation around the optical fiber stretcher and linear feeding along the axial line is realized, and coiling is completed.
5. The optical fiber pre-tightening coiling device as in claim 4, wherein said feed screw disc mates with the central screw hole of the mounting plate through a screw pair; The thread pair is a fine thread of M30×0.75; And driving the optical fiber to feed 0.75mm along the axial direction of the optical fiber stretcher after the feeding screw thread disc rotates for each circle.
6. The optical fiber pre-tightening coiling device as in claim 4, wherein said feed drive mechanism further comprises a transmission assembly for driving said feed screw disc to move linearly, said transmission assembly being a screw-nut pair or a gear-rack pair; when the transmission assembly is a screw-nut pair, the nut is fixedly connected with the feeding threaded disc, the axis of the screw is parallel to the axis of the optical fiber stretcher and is matched and fixed with the mounting plate, and the screw drives the nut and the feeding threaded disc to move when rotating; when the transmission component is a gear-rack pair, the gear is fixedly connected with the feeding threaded disc, the axis of the rack is parallel to the axis of the optical fiber stretcher and is matched and fixed with the mounting plate, and the gear moves along the rack and drives the feeding threaded disc to move when rotating.
7. The optical fiber pre-tightening coiling device as in claim 4, wherein a rocking handle is arranged on the feeding screw disc, and the rocking handle is manually rotated to drive the feeding screw disc to rotate so as to realize manual coiling of the optical fiber; Or the feeding threaded disc is connected with a stepping motor, and the feeding threaded disc is driven to rotate by the stepping motor so as to realize automatic coiling of the optical fiber.
8. The optical fiber pre-tightening coiling device as in claim 1, wherein said adaptive pre-tightening loading module comprises a steering mechanism and a counterweight loading mechanism; The steering mechanism is arranged on the optical platform surface wrapping plate and used for supporting and guiding the optical fiber to realize the self-adaptive adjustment of the multi-dimensional rotation of the optical fiber force transmission path direction; the counterweight loading mechanism is connected with the pre-tightening end of the optical fiber bypassing the steering mechanism and is used for providing axial pre-tightening force for the optical fiber; The steering mechanism performs self-adaptive adjustment, so that the direction of pretightening force exerted on the optical fiber by the counterweight loading mechanism is always aligned with the optical fiber stretching direction of the coiling stretching module.
9. The optical fiber pre-tightening coiling device as in claim 8, wherein said steering mechanism includes a fixed pulley and a pulley bracket: the fixed pulley is arranged on the pulley bracket in a free rotation manner around the self axis; The pulley support is arranged on the optical platform surface wrapping plate and can drive the fixed pulley to rotate around the axis vertical to the optical platform surface wrapping plate.
10. The optical fiber pre-tightening coiling device as in claim 9, wherein said pulley bracket includes a U-shaped two-dimensional turntable or a ball-and-socket joint; the U-shaped two-dimensional turntable comprises an azimuth base fixed on the optical flat-table surface wrapping plate and a U-shaped frame which is arranged on the azimuth base and can rotate in a self-adaptive manner around an axis perpendicular to the optical flat-table surface wrapping plate, and the fixed pulley is arranged on the U-shaped frame; the spherical universal joint is used for installing the fixed pulley to conduct multidirectional self-adaptive angle adjustment.
11. The optical fiber pre-tightening coiling device as in claim 10, wherein when the pulley support is a U-shaped two-dimensional turntable, the fixed pulley is mounted on the U-shaped frame through bearings, and both shaft bearings of the U-shaped frame are all ceramic bearings.
12. The fiber optic pretension coiling device of claim 8, wherein the weight loading mechanism comprises a gravity loading assembly, a constant force spring, or a weight hydraulic cylinder: The gravity loading assembly is connected with the tail end of the optical fiber bypassing the steering mechanism and transmits axial pretightening force to the optical fiber under the action of gravity; the constant force spring or the counterweight hydraulic cylinder is connected with the tail end of the optical fiber through a rope and is used for providing axial pretightening force for the optical fiber.
13. The optical fiber pre-tightening coiling device as in claim 9, wherein the fixed pulley is made of a material selected from the group consisting of polyetheretherketone, polytetrafluoroethylene-filled composite materials, ultra-high molecular weight polyethylene, and metal coated with teflon layer.
14. An optical fiber pre-tightening coiling method implemented by the optical fiber pre-tightening coiling device as claimed in any one of claims 1 to 13, comprising the steps of: S1, fixing one end of an optical fiber serving as a fixed end on the coiling and stretching module; Step S2, guiding the middle section of the optical fiber to a coiling working area of the coiling and stretching module, and connecting the other end of the optical fiber serving as a pre-tightening end with the self-adaptive pre-tightening loading module; S3, applying axial pre-tightening force to the optical fiber through the self-adaptive pre-tightening loading module; s4, driving the coiling and stretching module to move, and dragging and guiding the optical fiber to coil along a preset track; in the coiling process of step S4, the adaptive pre-tightening loading module is dynamically adjusted to ensure that the direction of the pre-tightening force applied to the optical fiber always keeps consistent with the axial direction of the stretched section of the optical fiber.
15. The fiber optic pretension coiling method of claim 14, wherein the coiling and stretching module comprises a fiber stretcher, a mounting plate, and a feed drive mechanism comprising a feed screw disc and a counterweight loading mechanism: In the step S1, fixing the fixed end of the optical fiber on a feeding thread disc of the feeding driving mechanism; In the step S2, the middle section of the optical fiber is guided to the outer circumferential surface of the optical fiber stretcher, and the pre-tightening end of the optical fiber bypasses the steering mechanism of the adaptive pre-tightening loading module and is then connected to the counterweight loading mechanism; in the step S3, axial pretightening force is applied to the optical fiber through the counterweight loading mechanism; in the step S4, the feeding threaded disc is driven to rotate, so as to drive the optical fiber to feed along the axial direction of the optical fiber stretcher and coil around the outer circumferential surface of the optical fiber stretcher, and the optical fiber is coiled on the surface of the optical fiber stretcher in a spiral manner.

Description

Optical fiber pre-tightening coiling device and method Technical Field The invention relates to the technical field of optical fiber device preparation and testing, in particular to an optical fiber pre-tightening coiling device and an optical fiber pre-tightening coiling method. Background Optical fiber is an important optical waveguide medium and has wide application in communication, sensing, laser and other fields. In the preparation and testing of optical fiber devices (such as fiber gratings and fiber rings), and in specific application scenarios such as fiber stretching sensing, it is often necessary to apply a controllable and stable axial pre-tightening force to the middle region of a length of optical fiber, and to coil and fix the length of optical fiber in a specific manner. The key of the optical fiber pre-tightening coiling technology is to realize high-precision and high-stability tension control, and reliably protect the optical fiber in the whole coiling process, so that the damage of the optical fiber is avoided to influence the subsequent process or application effect. At present, the related technology and the related device for pre-tightening and coiling the optical fiber still have a plurality of defects in practical application. In the aspect of tension control, the existing device is difficult to realize continuous and stable high-precision pretightening force output, the pretightening force is easy to shake, offset and the like, the problems of failure in the preparation process of an optical fiber device, degradation in the device performance, such as low modulation efficiency, shallow modulation depth, degradation in grating spectrum type and the like, are directly caused, fragile optical fiber breakage is even caused by unstable tension, the existing technology lacks an effective self-adaptive guiding mechanism in the aspects of coiling protection and guiding, and the problems of excessive bending (the curvature radius is smaller than the minimum bending radius), accumulation and twisting, friction and scratch of a coating with a structural member and the like are easily caused in the coiling process, so that the integrity of the optical fiber and the transmission quality of an optical signal are influenced. Therefore, the prior art has the problems of insufficient tension control stability, low guiding precision in the coiling process, poor operation integration level and the like, and a new optical fiber pre-tightening coiling device and method are needed. Disclosure of Invention The invention aims to provide an optical fiber pre-tightening coiling device and method, which solve the problems that the optical fiber pre-tightening force is unstable in loading, the direction is difficult to align and the coiling precision is low. In order to achieve the above purpose, the invention provides an optical fiber pre-tightening coiling device, which comprises a coiling and stretching module, an adaptive pre-tightening loading module and a horizontally arranged optical platform surface package plate: The coiling and stretching module and the self-adaptive pre-tightening loading module are sequentially arranged along the stretching direction of the optical fiber and are fixed on the optical platform surface package plate; The coiling and stretching module is used for drawing and guiding the optical fiber to coil in a spiral track; the self-adaptive pre-tightening loading module is used for applying a directional self-adaptive axial pre-tightening force to the optical fiber; The self-adaptive pre-tightening loading module is dynamically adjusted in the coiling process to ensure that the direction of the pre-tightening force is always consistent with the axial direction of the stretched section of the optical fiber. In some embodiments, the coiled drawing module includes a fiber stretcher, a mounting plate, and a feed drive mechanism; the mounting plate is fixed on the optical platform surface wrapping plate; the optical fiber stretcher is coaxially connected with the feeding driving mechanism and is used as a carrier for coiling and stretching the optical fiber; The feeding driving mechanism is arranged on the mounting plate and used for driving the optical fiber to feed along the axial direction of the optical fiber stretcher and coiling the optical fiber around the optical fiber stretcher. In some embodiments, the mounting plate is an L-shaped mounting plate: The L-shaped mounting plate is provided with a substrate part which is horizontally arranged and fixed on the optical platform surface wrapping plate, and a supporting part which is vertically extended from the substrate part; The optical fiber stretcher and the feeding driving mechanism are both arranged on the supporting part. In some embodiments, the feed drive mechanism comprises a feed screw disc: The feeding thread disc is connected with the mounting plate in a matching way and is provided with a fiber guide hole for the fiber