Bragg Raman grating fiber tensioning structure

Abstract

The utility model discloses a Bragg Raman grating optical fiber tensioning structure which comprises a material table, and a plurality of optical fiber tensioning and coiling mechanisms are assembled and connected to the top of the material table. The optical fiber tensioning and rolling mechanism comprises a tensioning vertical frame, and the lower end of the tensioning vertical frame is assembled and connected with a rolling assembly for rolling the optical fiber; the optical fiber tensioning and winding mechanism further comprises a tensioning assembly. The tensioning assembly comprises tensioning wheel parts arranged on the two sides of the tensioning vertical frame, each tensioning wheel part comprises an adjusting wheel arm, and a plurality of tensioning wire guide wheels are assembled and connected to the adjusting wheel arms; a connecting sliding beam connected to the tensioning vertical frame in a sliding mode is fixedly assembled and connected between the adjusting wheel arms, and the connecting sliding beam ascends and descends through a lead screw structure. The adjusting wheel arm is installed on the connecting sliding beam through an angle adjusting structure, and the optical fiber cable is adjusted and tensioned through the angle adjusting structure. In this way, the tensioning force of the too loose or too tight cable is flexibly adjusted to a proper force, and it is ensured that a certain tensioning force is kept and the cable is not damaged due to too tight tensioning.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical fiber production, and in particular relates to a Bragg Raman grating optical fiber tensioning structure. Background Art

[0002] Bragg Raman grating fiber is an optical element with a Bragg grating. During operation, a UV laser beam is irradiated laterally through the fiber and an interference pattern is generated using a phase mask. This will cause a permanent change in the physical properties of the silica matrix. This spatially periodic modulation of refraction will create a core index of a resonant structure.

[0003] Bragg Raman grating optical fiber has a wide range of applications in the industry, such as as a medical scope such as a gastroenteroscope, a thoracoscope, etc. In the industrial production process of the above optical fiber, the optical fiber undergoes gravity drawing, annealing and other heat treatment modifications, and subsequent wrapping of a protective outer layer and other processing steps to obtain a finished optical fiber cable.

[0004] During the production process, the finished fiber optic cable needs to be rolled up on a winding device after being discharged from the processing equipment. The more conventional winding devices are commonly used winding structures such as winding rollers and motors. However, unlike traditional cable winding, fiber optic cables are not only relatively thin, but also the winding tension cannot be too large during the winding process, which can easily damage the internal optical core.

[0005] Therefore, in the actual winding process, the fiber optic cable becomes loose due to the inability to control the winding tension, which not only seriously interferes with the normal operation of the equipment, but also causes the manpower and equipment in the workshop to move back and forth. Once the loose fiber optic cable is pulled and caught by the workers or vehicles, it is very easy to cause the cable to break. Therefore, in the actual production process, if the fiber optic cable can be efficiently wound, the optical fiber can be properly tensioned, and the tensioning force can be flexibly controlled, it is of great significance to improve production efficiency and facilitate winding operations. Utility Model Content

[0006] Based on the above background, the purpose of the utility model is to provide a Bragg Raman grating optical fiber tensioning structure.

[0007] In order to achieve the above objectives, the utility model adopts the following technical solutions:

[0008] A Bragg Raman grating optical fiber tensioning structure comprises a material table, the top of which is equipped with a plurality of optical fiber tensioning and winding mechanisms;

[0009] The optical fiber tensioning and winding mechanism comprises a vertically arranged tensioning stand, and a winding assembly for winding up the optical fiber is assembled and connected to the lower end of the tensioning stand;

[0010] The optical fiber tensioning and winding mechanism also includes a tensioning assembly for tensioning the optical fiber cable during the winding process;

[0011] The tensioning assembly includes a tensioning wheel component arranged on both sides of the tensioning stand, and the tensioning wheel component includes an adjusting wheel arm, and a plurality of tensioning wire wheels are assembled and connected to the adjusting wheel arm;

[0012] A connecting slide beam slidably connected to the tensioning stand is fixedly assembled between the adjusting wheel arms, and the connecting slide beam is lifted and lowered by a lead screw structure; during the lifting process, the tensioning force of the tensioning wire wheel to tension the optical fiber cable is adjusted;

[0013] The adjusting wheel arm is installed on the connecting slide beam through an angle adjusting structure, and the optical fiber cable is tensioned after adjusting the angle of the tensioning wire wheel through the angle adjusting structure.

[0014] Preferably, a vertically arranged long sliding opening is provided on the tensioning stand, and the connecting sliding beam is slidably connected in the long sliding opening;

[0015] The screw structure includes a screw rotatably connected in the long sliding port, and the screw is threadedly connected to the connecting sliding beam;

[0016] The top of the tensioning stand is equipped with a screw motor for driving the screw to rotate.

[0017] Preferably, the lead screw structure further comprises a plurality of guide rail rods fixedly connected in the long sliding opening, and the guide rail rods are slidably connected to the connecting sliding beam.

[0018] Preferably, the winding assembly comprises a winding shaft rotatably connected to the side walls of the tensioning stand, and a winding motor connected to drive the winding shaft is installed in the tensioning stand;

[0019] A winding drum is detachably mounted on the winding shaft.

[0020] Preferably, the winding drum comprises drum plates spaced apart on both sides, and a mounting sleeve sleeved on the winding shaft is fixedly connected between the drum plates.

[0021] Preferably, a blocking seat is fixedly connected to the inner side of the winding shaft and the outer end of the winding shaft is threadedly connected to a fastening nut fastened to the outer cylinder plate.

[0022] Preferably, the angle adjustment structure comprises annular seats respectively fixedly connected to the end positions of the connecting slide beams, a rotating rod is fixedly connected to the annular seats, and the rotating rod is rotatably connected to the adjusting wheel arm;

[0023] The outer end of the rotating rod is threadedly connected with a contact pressure nut which is contact-pressure locked on the side wall of the regulating wheel arm.

[0024] Preferably, the bottom of the tensioning stand is fixedly connected to a bottom mounting seat, and the bottom mounting seat is fastened to the top of the material table by bolts.

[0025] Preferably, the bottom of the material platform is rotatably connected to a fixed bottom mounting seat, and the bottom center of the material platform is assembled and connected to a rotating motor;

[0026] The rotating motor is fixedly mounted on the bottom of the fixed bottom mounting seat through a motor frame.

[0027] The utility model has the following beneficial effects:

[0028] 1. During the working process, first, under the guidance of the first tensioning wire wheel and the second tensioning wire wheel, the optical fiber cable is kept stably wound during the winding process. Secondly, when the optical fiber is loose, under the drive of the lead screw motor, the connecting slide beam is lifted up to carry the first tensioning wire wheel and the second tensioning wire wheel. At this time, under the lifting action, the cable is pulled upward to tighten the cable. When the tightening force is too large, in order to avoid cable damage, the lead screw motor drives the connecting slide beam to descend, and after descending, the cable is loosened. By flexibly adjusting the height of the first tensioning wire wheel and the second tensioning wire wheel, the optical fiber cable can be guided with a more appropriate tensioning force. In this way, the tensioning force of the overly loose or tight cable can be flexibly adjusted to the appropriate force, ensuring that a certain tensioning force is maintained without over-tightening the cable to cause damage.

[0029] 2. Micro-adjust the tensioning force by angle adjustment. Specifically, when the first tensioning wire wheel needs to be raised, the operator loosens the contact pressure nut and rotates the adjusting wheel arm to raise the first tensioning wire wheel on the adjusting wheel arm. Similarly, the second tensioning wire wheel can be raised. In this way, the force of the tensioning cable can be adjusted by angle adjustment to achieve micro-adjustment. After adjustment, the contact pressure nut is pressed and locked to the adjusting wheel arm again. In this way, the tensioning force can be micro-adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0031] Figure 1 It is a schematic diagram of the overall structure in an embodiment of the utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the optical fiber tensioning and winding mechanism in the embodiment of the utility model;

[0033] Figure 3 This is a structural schematic diagram of the angle adjustment structure in the embodiment of the utility model;

[0034] Figure 4 This is a schematic diagram of the structure of the winding assembly in the embodiment of the utility model;

[0035] Figure 5 For the utility model embodiment Figure 1 A schematic diagram of the structure from another perspective;

[0036] Figure 6 For the utility model embodiment Figure 1 Top view of .

[0037] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0041] Example 1

[0042] like Figure 1-6As shown, a Bragg Raman grating optical fiber tensioning structure includes a circular material table 21, and the top of the material table 21 is equipped with three optical fiber tensioning and winding mechanisms distributed in a circular array. The optical fiber tensioning and winding mechanism is used to flexibly adjust the tensioning force during the cable winding process to prevent the optical core in the optical fiber cable from being damaged due to over-tightening, and solve the technical problem of loose cables.

[0043] The specific structure of the optical fiber tensioning and winding mechanism is as follows:

[0044] The optical fiber tensioning and winding mechanism includes a vertically arranged tensioning stand 31 (the bottom of the tensioning stand 31 is fixedly connected to a bottom mounting seat, and the bottom mounting seat is fastened to the top of the material table 21 by bolts), and a winding assembly for winding up the optical fiber is assembled and connected to the lower end of the tensioning stand 31. The winding assembly winds up the optical fiber cable discharged by the processing equipment.

[0045] At the same time, the optical fiber tensioning and winding mechanism also includes a tensioning component for tensioning the optical fiber cable during the winding process.

[0046] Specifically, the tensioning assembly includes a tensioning wheel component 33 arranged on both sides of the tensioning frame 31, and the tensioning wheel component 33 includes an adjusting wheel arm 331. Two tensioning wire wheels are assembled and connected on the adjusting wheel arm 331, namely a first tensioning wire wheel 333 and a second tensioning wire wheel 332. The wheel grooves on the first tensioning wire wheel 333 and the second tensioning wire wheel 332 are wire grooves.

[0047] At the same time, a connecting slide beam 34 slidably connected to the tensioning stand 31 is fixedly assembled between the adjusting wheel arms 331. Specifically, a vertically arranged long slide opening is opened on the tensioning stand 31, and the connecting slide beam 34 is slidably connected in the long slide opening.

[0048] At the same time, the connecting slide beam 34 is lifted and lowered by the lead screw structure; during the lifting process, the tensioning force of the tensioning wire wheel to tension the optical fiber cable is adjusted.

[0049] Specifically, the screw structure includes a screw 321 rotatably connected in the long sliding port (same as the existing method, a bearing rotatably connected to the screw 321 is installed at the bottom of the long sliding port), and the screw 321 is threadedly connected to the connecting sliding beam 34.

[0050] At the same time, a motor seat is installed on the top of the long sliding port. Similarly, the upper end of the lead screw is rotatably connected to the motor seat, and a lead screw motor 32 for driving the lead screw to rotate is fixedly installed on the motor seat.

[0051] To improve the stability of lifting, the screw structure further includes two guide rails 322 fixedly connected in the long sliding opening, and the guide rails 322 are slidably connected to the two sides of the connecting slide beam 34. The top of the guide rail 322 is fixed to the bottom of the motor seat.

[0052] During operation, the optical fiber cable discharged by the processing equipment is first guided from the bottom of the first tensioning wire wheel 333, then guided from the top of the second tensioning wire wheel 332, and then hangs down and is rolled onto the winding assembly.

[0053] First, under the guidance of the first tensioning wire wheel 333 and the second tensioning wire wheel 332, the optical fiber cable is kept stably reeled during the reeling process. Secondly, when the optical fiber is loose, under the drive of the lead screw motor 32, the connecting slide beam 34 is lifted up to carry the first tensioning wire wheel 333 and the second tensioning wire wheel 332 up. At this time, under the lifting action, the cable is pulled upward, thereby tightening the cable. When the tightening force is too large, in order to avoid cable damage, the lead screw motor 32 drives the connecting slide beam 34 to descend, and after descending, the cable is loosened. By flexibly adjusting the height of the first tensioning wire wheel 333 and the second tensioning wire wheel 332, the optical fiber cable can be guided with a more appropriate tensioning force.

[0054] Example 2

[0055] like Figure 1-6 As shown, based on the structure of Example 1, in order to achieve fine adjustment of the tensioning cable, the adjusting wheel arm 331 is installed on the connecting slide beam 34 through an angle adjustment structure, and the optical fiber cable is tensioned after adjusting the angle of the tensioning wire wheel through the angle adjustment structure.

[0056] Specifically, the angle adjustment structure includes an annular seat 341 respectively fixedly connected to the end positions of the connecting slide beam 34 (that is, the ends of the connecting slide beam 34 are respectively fixedly connected to the annular seat 341), and a rotating rod 3411 is fixedly connected to the annular seat 341, and the rotating rod 3411 is rotatably connected to the adjusting wheel arm 331. At the same time, the outer end of the rotating rod 3411 is threadedly connected to a contact nut that is contact-locked on the side wall of the adjusting wheel arm 331.

[0057] When the first tensioning wire wheel 333 needs to be raised, the operator loosens the contact pressure nut and rotates the adjusting wheel arm 331 to raise the first tensioning wire wheel 333 on the adjusting wheel arm 331. Similarly, the second tensioning wire wheel 332 can be raised. In this way, the force of the tensioning cable can be adjusted by angle adjustment to achieve fine adjustment. After adjustment, the contact pressure nut is pressed and locked to the adjusting wheel arm 331 again.

[0058] Example 3

[0059] like Figure 1-6As shown, based on the structure of Example 2, the winding assembly of this embodiment includes winding shafts 35 rotatably connected to the side walls of the tensioning frame 31, and the tensioning frame 31 is equipped with a winding motor connected to drive the winding shaft 35; specifically, the tensioning frame 31 has a cavity for installing the motor at the lower end position, which is the same as the existing method of hidden motor installation, and the cavity is equipped with winding motors (not shown in the figure) respectively equipped with the winding shaft 35.

[0060] Meanwhile, a reel 36 is detachably mounted on the reel shaft 35. After reeling, the reel 36 is disassembled and replaced with an empty reel.

[0061] Specifically, similar to the winding structure of the existing winding cable, the winding drum 36 includes drum plates spaced apart on both sides, and a mounting sleeve sleeved on the winding shaft 35 is fixedly connected between the drum plates. A blocking seat 351 is fixedly connected to the inner side of the winding shaft 35 to block the drum plate at the inner side, and a fastening nut 352 fastened to the outer drum plate is threadedly connected to the outer end of the winding shaft 35.

[0062] After loosening the fastening nut, the take-up drum 36 for taking up the coiled material is withdrawn.

[0063] Example 4

[0064] like Figure 1-6 As shown, based on the structure of Example 3, the bottom of the material platform 21 is rotatably connected to a fixed bottom mounting seat 1 (same as the existing method, the fixed bottom mounting seat 1 is mounted on the workbench), and the bottom center of the material platform 21 is assembled and connected to a rotating motor 2; the rotating motor 2 is fixedly mounted on the bottom of the fixed bottom mounting seat 1 through a motor frame. In the working process of this method, when one optical fiber tensioning and winding mechanism is fully wound, the rotating motor 2 drives the other vacant optical fiber tensioning and winding mechanism to switch to the corresponding position and then continue to wind.

[0065] Similar to the existing method, in order to improve the rotation stability of the material table 21, a rotation groove structure rotatably connected to the material table 21 is provided on the top of the fixed bottom mounting seat 1, and the material table 21 is limited and rotated in the rotation groove structure.

[0066] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A Bragg Raman grating optical fiber tensioning structure, characterized in that: It includes a material platform, and a plurality of optical fiber tensioning and winding mechanisms are assembled and connected on the top of the material platform; The optical fiber tensioning and winding mechanism comprises a vertically arranged tensioning stand, and a winding assembly for winding up the optical fiber is assembled and connected to the lower end of the tensioning stand; The optical fiber tensioning and winding mechanism also includes a tensioning assembly for tensioning the optical fiber cable during the winding process; The tensioning assembly includes a tensioning wheel component arranged on both sides of the tensioning stand, and the tensioning wheel component includes an adjusting wheel arm, and a plurality of tensioning wire wheels are assembled and connected to the adjusting wheel arm; A connecting slide beam slidably connected to the tensioning stand is fixedly assembled between the adjusting wheel arms, and the connecting slide beam is lifted and lowered by a lead screw structure; during the lifting process, the tensioning force of the tensioning wire wheel to tension the optical fiber cable is adjusted; The adjusting wheel arm is installed on the connecting slide beam through an angle adjusting structure, and the optical fiber cable is tensioned after adjusting the angle of the tensioning wire wheel through the angle adjusting structure.

2. The Bragg Raman grating optical fiber tensioning structure according to claim 1, characterized in that: The tensioning stand is provided with a vertically arranged long sliding opening, and the connecting sliding beam is slidably connected in the long sliding opening; The screw structure includes a screw rotatably connected in the long sliding port, and the screw is threadedly connected to the connecting sliding beam; The top of the tensioning stand is equipped with a screw motor for driving the screw to rotate.

3. The Bragg Raman grating optical fiber tensioning structure according to claim 2, characterized in that: The lead screw structure also includes a plurality of guide rail rods fixedly connected in the long sliding opening, and the guide rail rods are slidably connected to the connecting sliding beam.

4. The Bragg Raman grating optical fiber tensioning structure according to claim 1, characterized in that: The winding assembly comprises a winding shaft rotatably connected to the side walls of the tensioning stand, and a winding motor connected to drive the winding shaft is installed in the tensioning stand; A winding drum is detachably mounted on the winding shaft.

5. The Bragg Raman grating optical fiber tensioning structure according to claim 4, characterized in that: The winding drum comprises drum plates spaced apart on two sides, and a mounting sleeve sleeved on the winding shaft is fixedly connected between the drum plates.

6. The Bragg Raman grating optical fiber tensioning structure according to claim 5, characterized in that: The inner side of the winding shaft is fixedly connected with a blocking seat of the inner cylinder plate, and the outer end of the winding shaft is threadedly connected with a fastening nut fastened to the outer cylinder plate.

7. The Bragg Raman grating optical fiber tensioning structure according to claim 1, characterized in that: The angle adjustment structure comprises an annular seat respectively fixedly connected to the end positions of the connecting slide beam, a rotating rod is fixedly connected to the annular seat, and the rotating rod is rotatably connected to the adjusting wheel arm; The outer end of the rotating rod is threadedly connected with a contact pressure nut which is contact-pressure locked on the side wall of the regulating wheel arm.

8. The Bragg Raman grating optical fiber tensioning structure according to claim 1, characterized in that: The bottom of the tensioning stand is fixedly connected with a bottom mounting seat, and the bottom mounting seat is fastened to the top of the material table by bolts.

9. The Bragg Raman grating optical fiber tensioning structure according to claim 1, characterized in that: The bottom of the material platform is rotatably connected to a fixed bottom mounting seat, and the bottom center of the material platform is assembled and connected to a rotating motor; The rotating motor is fixedly mounted on the bottom of the fixed bottom mounting seat through a motor frame.

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