Fiber tensioning device

Abstract

A fiber supply tensioning device belongs to the technical field of fiber optic gyroscope manufacturing. The fiber supply tensioning device includes a fiber supply seat, on which a fiber entry guide mechanism, a swinging fiber guide mechanism and a fiber outlet guide mechanism are provided; the fiber entry guide mechanism includes a first bracket and a rotating seat, the rotating seat is arranged on the first bracket to rotate around an axis parallel to the axis of the fiber supply ring, and a fiber entry guide wheel is provided on the rotating seat; a first transition fiber guide wheel is provided between the fiber entry guide mechanism and the swinging fiber guide mechanism, and a second transition fiber guide wheel and a third transition fiber guide wheel are provided between the swinging fiber guide mechanism and the fiber outlet guide mechanism in sequence. The present invention can control the fiber supply tension when the optical fiber is wound around the ring frame through the swinging fiber guide mechanism, and can meet the winding needs of optical fiber rings of different models and sizes.

Description

Technical Field

[0001] The invention relates to a technology in the field of optical fiber ring manufacturing, in particular to a fiber supply tensioning device. Background Art

[0002] Fiber optic gyroscopes are high-precision sensors that are very sensitive to the number of turns of each layer of optical fiber wound on the fiber optic ring. During the winding process, it is necessary to ensure that each layer of optical fiber is tightly arranged. An important factor affecting the fiber optic arrangement is the fiber optic winding tension. During the fiber optic winding process, not only the stability of the tension when winding the same layer of optical fiber must be ensured, but also the control of the tension of the fiber optic ring at different diameters must be ensured. However, current fiber optic winding equipment, such as the Chinese patent application CN104792338A, has a weak ability to control the fiber optic winding tension and cannot meet the winding requirements of fiber optic rings of different models and sizes.

[0003] In order to solve the above problems in the prior art, the present invention is provided. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention proposes a fiber supply tensioning device, which can control the fiber supply tension when the optical fiber is wound around a ring frame, and can meet the winding needs of optical fiber rings of different models and sizes.

[0005] The present invention comprises a fiber supply seat, which is used to load a fiber supply ring; the fiber supply seat is provided with a fiber input guide mechanism, a swinging fiber guide mechanism and a fiber output guide mechanism;

[0006] The fiber introduction and guiding mechanism comprises a first bracket and a rotating seat, the rotating seat is rotatably arranged on the first bracket around an axis parallel to the axis of the fiber supply ring, and a fiber introduction and guiding wheel is arranged on the rotating seat; preferably, the rotating seat and the first bracket are rotatably arranged through the structure cooperation of the rotating shaft and the rotating shaft sleeve;

[0007] A first transition fiber guide wheel is arranged between the fiber input guide mechanism and the swing fiber guide mechanism, and a second transition fiber guide wheel and a third transition fiber guide wheel are arranged in sequence between the swing fiber guide mechanism and the fiber output guide mechanism;

[0008] Each fiber guide wheel is provided with a fiber guide groove, and the projections of the fiber guide grooves of the swing fiber guide wheel, the first transition fiber guide wheel and the second transition fiber guide wheel on the axial direction of the fiber supply wheel are on the same straight line; the fiber guide groove of the fiber input guide wheel is staggered with the first transition fiber guide wheel, and the optical fiber between the two is parallel to the axial direction of the fiber supply wheel during fiber supply; the second transition fiber guide wheel is staggered with the third transition fiber guide wheel, and the optical fiber between the two is perpendicular to the axial direction of the fiber supply wheel during fiber supply.

[0009] Preferably, the third transition fiber guide wheel is connected to a tension detection component, and the tension detection component preferably adopts a tension sensor.

[0010] Preferably, the swing fiber guide mechanism includes a swing fiber guide wheel and a swing arm; the swing fiber guide wheel is arranged on the swing arm, and the swing arm is fixed on a rotary encoder, and the rotary encoder adjusts the swing amplitude of the swing arm according to the tension information output by the tension detection component.

[0011] Further preferably, a locking cylinder is provided corresponding to the rocking arm, and the locking cylinder is connected to a locking rod through a floating joint, and a locking groove is provided on the rocking arm corresponding to the locking rod; when the locking cylinder is actuated, the locking rod extends out and inserts into the locking groove to lock the position of the rocking fiber wheel.

[0012] Preferably, the fiber-entry and fiber-guiding mechanism is also provided with a rotating seat clamping assembly, which includes a scissor-type clamping piece; the two clamping ends of the scissor-type clamping piece for clamping the rotating seat are connected by a spring, and the two non-clamping ends are correspondingly provided with a two-way cylinder; when the two-way cylinder is opened, the two clamping ends of the scissor-type clamping piece for clamping the rotating seat open to release the rotating seat; when the two-way cylinder is closed, the two clamping ends of the scissor-type clamping piece for clamping the rotating seat reset and clamp the rotating seat under the action of the spring preload.

[0013] Preferably, a fourth transition fiber guide wheel and an anti-tension mutation mechanism are sequentially arranged between the third transition fiber guide wheel and the fiber outlet guide mechanism. The fourth transition fiber guide wheel improves the detection stability of the tension detection component and avoids the influence of the anti-tension mutation mechanism on the tension detection. The anti-tension mutation mechanism includes an anti-mutation fiber guide wheel, which is arranged on the second bracket, and the second bracket is rotatably arranged on the fiber supply seat around an axis parallel to the axis of the fiber supply ring, and is connected to the fiber supply seat by a spring at an off-axis position. Preferably, the second bracket and the fiber supply seat are rotatably arranged through the structural cooperation of the rotating shaft and the rotating shaft sleeve.

[0014] Due to the particularity of the fiber optic gyroscope's fiber winding method, two fiber supply rings are required at the same time. When one fiber supply ring (as the working group) is used for fiber winding, the other fiber supply ring (as the standby group) needs to rotate with the fiber collection shaft. The rotation speed of the fiber collection shaft and the rotation speed of the fiber supply ring that rotates with the fiber collection shaft may be inconsistent for a moment. In this state, the optical fiber connected to the standby group and the optical fiber winding ring skeleton on the fiber collection shaft may have a problem of instantaneous stretching or relaxation tension mutation. The mutation is eliminated through the conduction of the spring on the anti-tension mutation mechanism to ensure the stability of the optical fiber tension control and avoid excessive tension from breaking the optical fiber.

[0015] A fiber outlet limiting mechanism is also provided corresponding to the fiber outlet guiding mechanism, which includes a pair of limiting wheels provided with fiber guide grooves, which limit the optical fiber in the left and right directions and up and down directions of the fiber outlet; when the working group is switched to the standby group (the fiber supply seat is hung on the rotating plate and rotated synchronously with the fiber receiving shaft), the optical fiber extended from the fiber outlet guiding mechanism is prevented from arbitrarily resting on other mechanism components to cause damage to the optical fiber.

[0016] In some technical solutions, the fiber supply seat includes a first fiber supply seat plate and a second fiber supply seat plate fixedly connected by a support member, the swing fiber guide mechanism is connected to the support member, and the fiber input guide mechanism and the fiber output guide mechanism are arranged on the first fiber supply seat plate.

[0017] Preferably, the first fiber supply seat plate is also provided with a fiber supply rotating shaft through a bearing assembly, and the fiber supply rotating shaft is used to load the fiber supply ring; the second fiber supply seat plate is provided with a driving docking piece, and the driving docking piece is coaxially arranged with the fiber supply rotating shaft and connected through a spline, so that the power input through the driving docking piece drives the fiber supply rotating shaft to rotate;

[0018] The driving docking piece is provided with a magnet, and the magnet is used to adsorb the driving docking piece on the second fiber supply seat plate to keep the position of the fiber supply ring stable.

[0019] Preferably, an elastic reset component is provided on the fiber supply rotating shaft, and the elastic reset component includes a fixed ring and a spring, the fixed ring is fixed on the fiber supply rotating shaft, and the spring connects the fixed ring and the driving docking piece; after the driving piece lifts the driving docking piece, the magnet is separated from the second fiber supply seat plate, and the spring is compressed at the same time; the driving piece withdraws, the spring resets, pushes the magnet to the magnetic action position with the second fiber supply seat plate, and adsorbs the driving docking piece on the second fiber supply seat plate.

[0020] Preferably, the fiber supply rotating shaft is provided with a fixing piece at one end where the fiber supply ring is loaded to fix the fiber supply ring, so as to keep the position of the fiber supply ring stable; further preferably, the fixing piece is a bolt, and the fiber supply rotating shaft is provided with a corresponding screw hole.

[0021] Preferably, the bearing assembly includes a first angular contact bearing seat, a second angular contact bearing seat and a hexagonal stud, the first angular contact bearing seat and the second angular contact bearing seat are sleeved on the fiber supply rotating shaft, the first angular contact bearing seat is fixedly connected to the first fiber supply seat plate, and the second angular contact bearing seat is fixedly connected to the first fiber supply seat plate through the hexagonal stud. The use of the angular contact bearing seat can ensure that the fiber supply rotating shaft can rotate at a high speed, thereby increasing the fiber winding speed.

[0022] Corresponding to the driving docking part, the working group is provided with a rotating driving assembly; the rotating driving assembly is provided with a driving part docked with the driving docking part; the rotating driving assembly is arranged on the linear displacement assembly, and the driving part is extended or retracted by the linear displacement assembly, and the driving part is extended to dock with the driving docking part, thereby driving the fiber supply rotating shaft to rotate.

[0023] Preferably, the drive docking member and the drive member are driven by conical surface matching.

[0024] Technical Effects

[0025] Compared with the prior art, the present invention has the following technical effects:

[0026] 1) By setting a rotating seat, the position of the fiber-entry guide wheel can change autonomously during the gradual change of the fiber thickness on the fiber-feeding wheel, and at the same time, the position of the optical fiber on the fiber-entry guide wheel and the first transition fiber-feeding guide wheel is ensured to be stable without twisting, etc., and the swinging fiber-guiding mechanism is used to facilitate the control of the fiber-feeding tension;

[0027] 2) By setting a rotating seat locking structure and a swinging fiber guide mechanism locking structure, when the fiber supply seat and the fiber collection shaft rotate synchronously, the positions of the various mechanisms on the fiber supply seat of the standby group can be ensured to be stable, thereby avoiding affecting the fiber winding action of the fiber collection shaft;

[0028] 3) For the fiber supply seat of the standby group, the driving docking piece is adsorbed on the second fiber supply seat plate by a magnet to ensure that the fiber supply seat of the standby group is hung on the main shaft and has a stable position and does not rotate when the main shaft rotates eccentrically. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of a fully automatic fiber optic gyroscope winding machine;

[0030] Figure 2 for Figure 1 Schematic diagram of the structure of the fiber supply drive device and the fiber supply tensioning device of the middle working group;

[0031] Figure 3 for Figure 1 The structural diagram of the fiber supply drive device of the middle working group;

[0032] Figure 4 Schematic diagram of the overall structure of the fiber tensioning device Figure 1 ;

[0033] Figure 5 Schematic diagram of the overall structure of the fiber tensioning device Figure 2 ;

[0034] Figure 6 Schematic diagram of the overall structure of the fiber tensioning device Figure 3 ;

[0035] Figure 7 It is a schematic diagram of the structure of the swing fiber guide mechanism;

[0036] Figure 8 It is a side view of the fiber supply mechanism;

[0037] Fig. 9 for Figure 8 Section view in the AA direction;

[0038] In the picture: Fully automatic fiber optic gyro ring winding machine 1000;

[0039] Fiber supply tensioning device 100, fiber supply driving device 200, fiber collection spindle 300;

[0040] Driving part 201, electrical integrated quick-change docking part 202;

[0041] Fiber supply seat 1, tension sensor 2, fiber outlet limit mechanism 3, fiber supply ring 10;

[0042] Fiber-introduction guide mechanism 11, swinging guide mechanism 12, fiber-outtroduction guide mechanism 13, fiber-supply mechanism 14, first transition guide wheel 15, second transition guide wheel 16, third transition guide wheel 17, fourth transition guide wheel 18, tension mutation prevention mechanism 19, and limit wheel 31;

[0043] A first fiber supply seat plate 1a, a second fiber supply seat plate 1b, and a support member 1c;

[0044] A first bracket 11a, a rotating seat 11b, a rotating seat clamping assembly 11c, and a fiber-introducing guide wheel 11d;

[0045] Swinging fiber guide wheel 12a, swinging rod 12b, locking cylinder 12c, rotary encoder 12d, locking rod 12e, locking groove 12f;

[0046] Fiber supply rotating shaft 14a, driving docking member 14b, bearing assembly 14c, elastic reset assembly 14e, magnet 14d, bolt 14f;

[0047] Anti-mutation fiber guide wheel 19a, second bracket 19b, spring 19c;

[0048] Electrical integrated quick-change docking part 2 1b-1;

[0049] Scissor-type clamp 11c-1, spring 11c-2, bidirectional cylinder 11c-3;

[0050] A first angular contact bearing seat 14c-1, a second angular contact bearing seat 14c-2, and a hexagonal stud 14c-3;

[0051] Fixed ring 14e-1, spring 14e-2. DETAILED DESCRIPTION

[0052] The present invention is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0053] Example 1

[0054] like Figure 1 , Figure 2 and Figure 3As shown, the present embodiment relates to a fiber supply tensioning device 100, which is used to load a fiber supply ring 10 for supplying fiber; two groups of the fiber supply tensioning device 100 are arranged in the fully automatic fiber optic gyro winding machine 1000, one group is used as a working group, and the other group is used as a standby group, the working group fiber supply tensioning device 100 is arranged on the fiber supply driving device 200, and the standby group fiber supply tensioning device 100 is fixed on the frame and rotates synchronously with the fiber receiving main shaft 300.

[0055] The fiber supply tensioning device 100 is provided with a fiber supply seat 1, which includes a first fiber supply seat plate 1a and a second fiber supply seat plate 1b arranged in parallel, and the first fiber supply seat plate 1a and the second fiber supply seat plate 1b are fixedly connected by a support member 1c;

[0056] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the fiber supply tensioning device 100 includes a fiber entry fiber guiding mechanism 11 , a swing fiber guiding mechanism 12 , a fiber exit fiber guiding mechanism 13 and a fiber supply mechanism 14 .

[0057] The fiber introduction and guiding mechanism 11 is arranged on the first fiber supply seat plate 1a, and includes a first bracket 11a, a rotating seat 11b, a rotating seat clamping assembly 11c and a fiber introduction and guiding wheel 11d. The rotating seat 11b is rotatably arranged on the first bracket 11a around an axis parallel to the axial direction of the fiber supply ring 10, and the fiber introduction and guiding wheel 11d is arranged on the rotating seat 11b; preferably, the rotating seat 11b and the first bracket 11a are rotatably arranged through the structure of the rotating shaft and the rotating shaft sleeve;

[0058] The rotating seat clamping assembly 11c includes a scissor-type clamping piece 11c-1; the two clamping ends of the scissor-type clamping piece for clamping the rotating seat are connected by a spring 11c-2, and the two non-clamping ends are correspondingly provided with a bidirectional cylinder 11c-3; when the fiber supply tensioning device 100 is used as a working group, the bidirectional cylinder 11c-3 is opened, and the two clamping ends of the scissor-type clamping piece for clamping the rotating seat are opened to release the rotating seat 11b, so that the fiber entry guide wheel 11d can adjust its position according to the change of the optical fiber thickness on the fiber supply ring 10; when the fiber supply tensioning device 100 is used as a standby group, the bidirectional cylinder 11c-3 is closed, and the two clamping ends of the scissor-type clamping piece for clamping the rotating seat reset the clamping rotating seat 11b under the action of the spring preload force to prevent the fiber entry guide wheel 11d from rotating randomly and the optical fiber position from being unstable.

[0059] The swing fiber guide mechanism 12 includes a swing fiber guide wheel 12a, a swing arm 12b and a locking cylinder 12c; the swing fiber guide wheel 12a is arranged on the swing arm 12b, and the swing arm 12b is fixed on the rotary encoder 12d, and the swing amplitude of the swing arm is adjusted by the rotary encoder; the locking cylinder 12c is connected to a locking rod 12e through a floating joint, and a locking groove 12f is provided on the swing arm 12b corresponding to the locking rod 12e. In the standby group fiber supply tensioning device 100, the locking cylinder 12c is actuated, and the locking rod 12e extends out and inserts into the locking groove 12f to ensure the stable position of the swing fiber guide wheel 12a; in the working group fiber supply tensioning device 100, the locking cylinder 12c is closed, and the locking rod 12e withdraws from the locking groove 12f to ensure that the swing fiber guide wheel 12a can swing up and down to adjust the tension. The swing fiber guide wheel 12a is locked on the swing arm 12b by bolts, and the locking position can be adjusted.

[0060] The fiber output guiding mechanism 13 includes a fiber output guiding wheel arranged on the first fiber supply seat plate 1a.

[0061] A first transition fiber guide wheel 15 is provided between the fiber entry guide mechanism 11 and the swing fiber guide mechanism 12, and a second transition fiber guide wheel 16, a third transition fiber guide wheel 17 and a fourth transition fiber guide wheel 18 are provided in sequence between the swing fiber guide mechanism 12 and the fiber exit guide mechanism 13; the third transition fiber guide wheel 17 is connected to the tension sensor 2, and the rotary encoder controls the swing amplitude of the rocking arm according to the tension information output by the tension sensor to adjust the tension.

[0062] Each fiber guide wheel is provided with a fiber guide groove I, and the projections of the fiber guide grooves of the swing fiber guide wheel 12a, the first transition fiber guide wheel 15, and the second transition fiber guide wheel 16 on the axial direction of the fiber supply wheel are on the same straight line; the fiber guide groove of the fiber input guide wheel 11d is staggered with the first transition fiber guide wheel 15, and the optical fiber lying between the two is parallel to the axial direction of the fiber supply wheel during fiber supply; the second transition fiber guide wheel 16 is staggered with the third transition fiber guide wheel 17, and the optical fiber lying between the two is perpendicular to the axial direction of the fiber supply wheel during fiber supply.

[0063] A tension mutation prevention mechanism 19 is provided between the fourth transition fiber guide wheel 18 and the fiber outlet guide mechanism 13; the tension mutation prevention mechanism 19 includes an anti-sudden change fiber guide wheel 19a, and the anti-sudden change fiber guide wheel 19a is arranged on the second bracket 19b, and the second bracket 19b is rotatably arranged on the first fiber supply seat plate 1a around an axis parallel to the fiber supply ring axis, and is connected to the first fiber supply seat plate 1a at an eccentric axis position through a spring 19c; under the influence of unexpected factors or when the fiber receiving shaft rotates to a certain position, when the tension suddenly changes, the sudden change is eliminated through the conduction of the spring to ensure the stability of the optical fiber tension control; preferably, the second bracket 19b and the first fiber supply seat plate 1a are rotatably arranged through the structural cooperation of the rotating shaft and the rotating shaft sleeve.

[0064] Corresponding to the fiber output guiding mechanism 13, a fiber output limiting mechanism 3 is also provided on the first fiber supply seat plate 1a. The fiber output limiting mechanism 3 includes a pair of limiting wheels 31 provided with fiber guiding grooves, which limit the optical fiber in the left and right directions and the up and down directions of the fiber output; when the fiber supply seat rotates synchronously with the fiber receiving shaft, the optical fiber is prevented from running around and affecting the normal fiber supply and winding.

[0065] like Figure 2 , Figure 8 and Fig. 9 As shown, the fiber supply mechanism 14 includes a fiber supply rotating shaft 14a and a driving docking member 14b, the driving docking member 14b is sleeved on the fiber supply rotating shaft 14a, and the two are connected by spline engagement, so that the power input through the driving docking member drives the fiber supply rotating shaft to rotate;

[0066] The fiber supply rotating shaft 14a is passed through the first fiber supply seat plate 1a through the bearing assembly 14c, the fiber supply ring 3 is loaded on the fiber supply rotating shaft 14a, and the fiber supply ring 10 is locked on the fiber supply rotating shaft 14a by the bolt 14f;

[0067] The driving docking member 14b is penetrated through the second fiber supply seat plate 1b, and the driving docking member 14b is provided with a magnet 14d, and the magnet 14d adsorbs the driving docking member 14b on the second fiber supply seat plate 1b; the magnet can be an electromagnet or a permanent magnet.

[0068] The bearing assembly 14c includes a first angular contact bearing seat 14c-1, a second angular contact bearing seat 14c-2 and a hexagonal stud 14c-3. The first angular contact bearing seat 14c-1 and the second angular contact bearing seat 14c-2 are sleeved on the fiber supply rotating shaft 14a. The first angular contact bearing seat 14c-1 is fixedly connected to the first fiber supply seat plate 1a, and the second angular contact bearing seat 14c-2 is fixedly connected to the first fiber supply seat plate 1a through the hexagonal stud 14c-3.

[0069] An elastic reset component 14e is provided on the fiber supply rotating shaft 14a, and the elastic reset component 14e includes a fixed ring 14e-1 and a spring 14e-2. The fixed ring 14e-1 is fixed on the fiber supply rotating shaft 14a, and the spring 14e-2 connects the fixed ring 14e-1 and the driving docking piece 14b; after lifting the driving docking piece 14b, the magnet 14d is separated from the second fiber supply seat plate 1b, and the spring 14e-2 is compressed; when the spring 14e-2 is reset, the magnet 14d is pushed to the magnetic action position with the second fiber supply seat plate 1b, and the driving docking piece 14b is adsorbed on the second fiber supply seat plate 1b.

[0070] like Figure 3 and Figure 6As shown, corresponding to the driving docking member 14b, the fiber supply drive device 200 is provided with a driving member 201, and the driving docking member 14b and the driving member 201 are driven by the cone surface matching; the rotary drive component 4 is arranged on the linear displacement components such as the cylinder push rod, and the linear displacement components drive the driving member 201 to extend or retract, and the driving member 201 extends and docks with the driving docking member 14b to drive the fiber supply rotating shaft to rotate. The fiber supply drive device 200 is also provided with an electrical integrated quick-change docking member 1 202, and correspondingly, the second fiber supply seat plate 1b is provided with an electrical integrated quick-change docking member 2 1b-1, and the two are docked to facilitate the electrical supply of the cylinder, sensor, etc.

[0071] It should be emphasized that the above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fiber tensioning device, characterized in that: It includes a fiber supply seat, which is used to load the fiber supply ring; the fiber supply seat is provided with a fiber input guide mechanism, a swing fiber guide mechanism and a fiber output guide mechanism; The fiber introduction and guiding mechanism comprises a first bracket and a rotating seat, the rotating seat is arranged on the first bracket for rotation around an axis parallel to the axis of the fiber supply ring, and a fiber introduction and guiding wheel is arranged on the rotating seat; A first transition fiber guide wheel is arranged between the fiber input guide mechanism and the swing fiber guide mechanism, and a second transition fiber guide wheel and a third transition fiber guide wheel are arranged in sequence between the swing fiber guide mechanism and the fiber output guide mechanism; Each fiber guide wheel is provided with a fiber guide groove, and the projections of the fiber guide grooves of the swing fiber guide wheel, the first transition fiber guide wheel, and the second transition fiber guide wheel on the axial direction of the fiber supply wheel are on the same straight line; the fiber guide groove of the fiber input fiber guide wheel is staggered with the first transition fiber guide wheel, and the optical fiber between the two is parallel to the axial direction of the fiber supply wheel during fiber supply; the second transition fiber guide wheel is staggered with the third transition fiber guide wheel, and the optical fiber between the two is perpendicular to the axial direction of the fiber supply wheel during fiber supply; The swing fiber guide mechanism comprises a swing fiber guide wheel and a swing rod; the swing fiber guide wheel is arranged on the swing rod, and the swing rod is fixed on the rotary encoder; A locking cylinder is provided corresponding to the swing arm, and the locking cylinder is connected to a locking rod through a floating joint. Corresponding to the locking rod, a locking groove is provided on the swing arm; when the locking cylinder is actuated, the locking rod extends out and inserts into the locking groove to lock the position of the swing fiber wheel; The fiber-introduction and fiber-guiding mechanism is also provided with a rotating seat clamping assembly, which includes a scissor-type clamping piece; the two clamping ends of the scissor-type clamping piece for clamping the rotating seat are connected by a spring, and the two non-clamping ends are correspondingly provided with a two-way cylinder; when the two-way cylinder is opened, the two clamping ends of the scissor-type clamping piece for clamping the rotating seat are opened to release the rotating seat; when the two-way cylinder is closed, the two clamping ends of the scissor-type clamping piece for clamping the rotating seat are reset to clamp the rotating seat under the action of the spring preload force.

2. The fiber tensioning device according to claim 1, characterized in that: The third transition fiber guide wheel is connected to a tension detection component, and the rotary encoder adjusts the swing amplitude of the rocking arm according to the tension information output by the tension detection component.

3. The fiber tensioning device according to claim 1, characterized in that: A fiber-outlet limiting mechanism is also provided corresponding to the fiber-outlet guiding mechanism. The fiber-outlet limiting mechanism includes a pair of limiting wheels provided with fiber-guiding grooves, which limits the optical fiber in the left-right direction and the up-down direction of the fiber-outlet.

4. The fiber tensioning device according to claim 2, characterized in that: A fourth transition fiber guide wheel and an anti-tension mutation mechanism are arranged in sequence between the third transition fiber guide wheel and the fiber outlet guide mechanism; the anti-tension mutation mechanism includes an anti-mutation fiber guide wheel, which is arranged on a second bracket, and the second bracket is rotatable around an axis parallel to the axis of the fiber supply ring and is arranged on the fiber supply seat, and is connected to the fiber supply seat through a spring at an off-axis position.

5. The fiber supply tensioning device according to any one of claims 1 to 4, characterized in that: The fiber supply seat comprises a first fiber supply seat plate and a second fiber supply seat plate fixedly connected by a support member, a swing fiber guide mechanism is connected to the support member, and a fiber input guide mechanism and a fiber output guide mechanism are arranged on the first fiber supply seat plate; The first fiber supply seat plate is also provided with a fiber supply rotating shaft through a bearing assembly, and the fiber supply rotating shaft is used to load the fiber supply ring; the second fiber supply seat plate is provided with a driving docking piece, and the driving docking piece is coaxially arranged with the fiber supply rotating shaft and connected through a spline, so that the power input through the driving docking piece drives the fiber supply rotating shaft to rotate; The driving docking piece is provided with a magnet, and the magnet is used to adsorb the driving docking piece onto the second fiber supply seat plate.

6. The fiber supply tensioning device according to claim 5, characterized in that: The fiber supply rotating shaft is provided with an elastic reset component, which includes a fixed ring and a spring. The fixed ring is fixed on the fiber supply rotating shaft, and the spring connects the fixed ring and the driving docking piece. After the driving piece lifts the driving docking piece, the magnet is separated from the second fiber supply seat plate, and the spring is compressed at the same time. The driving piece withdraws, the spring resets, pushes the magnet to the magnetic action position of the second fiber supply seat plate, and adsorbs the driving docking piece on the second fiber supply seat plate.

7. The fiber supply tensioning device according to claim 5, characterized in that: The bearing assembly includes a first angular contact bearing seat, a second angular contact bearing seat and a hexagonal stud. The first angular contact bearing seat and the second angular contact bearing seat are sleeved on the fiber supply rotating shaft. The first angular contact bearing seat is fixedly connected to the first fiber supply seat plate, and the second angular contact bearing seat is fixedly connected to the first fiber supply seat plate through the hexagonal stud.

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