Manufacturing device of straight-pulling beam combiner

Abstract

The utility model provides a straight-pulling beam combiner manufacturing device which comprises two clamping devices arranged in the first direction in a spaced mode, and the two clamping devices are used for clamping the two opposite ends of an optical fiber and can be driven to slide in the first direction in the face-to-face or back-to-back mode. The clamping device comprises a plurality of positioning pipes extending in the first direction, the positioning pipes are placed according to a preset rule, and each positioning pipe is used for allowing one optical fiber to penetrate through. According to the straightening beam combiner, through the arrangement of the multiple positioning pipes, all the optical fibers can be positioned through all the positioning pipes according to a preset rule and then straightened, the optical fibers do not need to be manually placed, the placing precision of all the optical fibers is improved, the error-tolerant rate of manufacturing of the straightening beam combiner is increased, and the convenience of optical fiber fusion and glass tube tapering is enhanced; and the yield of products is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of straight-pull beam combiners, and more particularly to a straight-pull beam combiner manufacturing device. BACKGROUND

[0002] A straight-pull beam combiner is an important optical device mainly used for combining multiple beams of pumping light into one beam to improve pumping power, and it plays a key role in the fields of optical communication, laser processing, etc. The straight-pull beam combiner is mainly composed of an input optical fiber, a beam combining region, and an output optical fiber, etc., and the energy combination is realized through the fusion and optical coupling principles of the optical fiber.

[0003] At present, when manufacturing a straight-pull beam combiner, the optical fiber is generally placed manually according to the requirements, which leads to low fault tolerance and low yield of the straight-pull beam combiner, and the production and processing are difficult. CONTENT OF THE INVENTION

[0004] The purpose of the embodiment of the present application is to provide a straight-pull beam combiner manufacturing device to solve the technical problem of low yield of the straight-pull beam combiner in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide a straight-pull beam combiner manufacturing device, which comprises two clamps arranged at intervals along a first direction, and the two clamps are used to clamp the opposite ends of an optical fiber and can be driven to slide towards or away from each other along the first direction. The clamp comprises a plurality of positioning tubes extending along the first direction, and each positioning tube is arranged according to a predetermined rule, and each positioning tube is used to pass through one optical fiber.

[0006] In some embodiments, each positioning tube comprises a central positioning tube and a plurality of peripheral positioning tubes, and each peripheral positioning tube is sequentially arranged from inside to outside around the central positioning tube.

[0007] In some embodiments, the clamp has a positioning cavity penetrating along the first direction, each positioning tube is received in the positioning cavity, the outer peripheral surface of each positioning tube abuts against the outer peripheral surfaces of a plurality of positioning tubes distributed thereon, and the outer peripheral surface of the outermost positioning tube abuts against the inner wall surface of the positioning cavity.

[0008] In some embodiments, the clamp comprises a clamping assembly and a positioning assembly, the clamping assemblies of the two clamps are located on the opposite outer sides of the positioning assemblies, the clamping assemblies are used to clamp the opposite ends of the optical fiber, and the positioning assembly comprises the positioning tubes.

[0009] In some embodiments, the positioning assembly comprises a positioning seat and a fixing structure, each of the positioning tubes is arranged in the positioning seat, and the fixing structure is used for fixing the positioning seat, and the positioning seat is detachably connected with the fixing structure.

[0010] In some embodiments, the fixing structure comprises a fixing seat and a fixing cover, the positioning seat is limited in the fixing seat, the fixing cover covers the positioning seat, one end of the fixing cover is connected with the fixing seat, and the other end of the fixing cover is locked and connected with the fixing seat through a first fastener.

[0011] In some embodiments, the positioning seat comprises a positioning part and a stop part connected with each other, the positioning tubes are arranged in the positioning part, the fixing seat has a first groove penetrating in the first direction, the positioning part is arranged in the first groove, and the stop part is stopped at the outer end surface of the first groove.

[0012] In some embodiments, the clamping assembly comprises a support seat and a pressing plate, the support seat is used for supporting the optical fibers, and the pressing plate is used for pressing on the optical fibers, one end of the pressing plate is rotationally connected with the support seat, and the other end of the pressing plate is locked with the support seat through a second fastener.

[0013] In some embodiments, the holder further comprises a mounting base plate, and the clamping assembly and the positioning assembly are fixed to the mounting base plate.

[0014] In some embodiments, the manufacturing device of the straightened and bunched fiber further comprises a glass tube, the glass tube is arranged between the two holders, and the glass tube is used for sleeving each of the optical fibers.

[0015] The manufacturing device of the straightened and bunched fiber provided in the application has the following beneficial effects: through the arrangement of the two holders, the two holders are used for clamping opposite ends of the optical fibers respectively and can slide towards each other or away from each other in the first direction after being driven, so that the optical fibers can be straightened to form a straightened and bunched fiber by driving the two holders to slide away from each other; in addition, each of the two holders comprises a plurality of positioning tubes arranged according to a preset rule, before the straightened and bunched fiber is formed, each of the optical fibers can be arranged through each of the positioning tubes, and the optical fibers are positioned according to the preset rule through each of the positioning tubes before being straightened, so that the optical fibers do not need to be arranged manually, the arrangement accuracy of the optical fibers is improved, the fault tolerance of the manufacturing of the straightened and bunched fiber is increased, the convenience of fiber fusion and glass tube tapering is enhanced, and the yield of products is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0017] Figure 1 A perspective structural schematic diagram of the manufacturing device of the straight pull beam combiner provided in the embodiments of the present application is shown in the figure.

[0018] Figure 2 A structural schematic diagram of the positioning assembly in the manufacturing device of the straight pull beam combiner provided in the embodiments of the present application is shown in the figure.

[0019] Figure 3 A perspective structural schematic diagram of the positioning seat and the positioning tubes in the manufacturing device of the straight pull beam combiner provided in the embodiments of the present application is shown in the figure.

[0020] Figure 4 A side structural schematic diagram of the positioning seat and the positioning tubes in the manufacturing device of the straight pull beam combiner provided in the embodiments of the present application is shown in the figure.

[0021] Figure 5 A side structural schematic diagram of the positioning seat in the manufacturing device of the straight pull beam combiner provided in the embodiments of the present application is shown in the figure.

[0022] Figure 6 A structural schematic diagram of the fixing structure in the manufacturing device of the straight pull beam combiner provided in the embodiments of the present application is shown in the figure.

[0023] In the figures, various reference signs represent:

[0024] 1, holder; 100, clamping assembly; 110, support seat; 120, pressing plate; 200, positioning assembly; 210, positioning tube; 210a, center positioning tube; 210b, peripheral positioning tube; 220, positioning seat; 221, positioning cavity; 222, positioning part; 223, stop part; 230, fixing structure; 231, fixing seat; 2311, first groove; 232, fixing cover; 2321, second groove; 233, first magnetic attraction part; 234, second magnetic attraction part; 300, mounting base plate; 310, mounting hole; 2, glass tube; 1000, optical fiber; X, first direction; Y, second direction. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0026] It should be noted that when an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0028] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0029] Please refer to Figures 1 to 4 The manufacturing device of the straight pull beam combiner will be described below. The manufacturing device of the straight pull beam combiner is used to synchronously straighten a plurality of optical fibers 1000 to form a straight pull beam combiner.

[0030] The manufacturing device of the straight pull beam combiner includes two clamps 1 spaced apart along a first direction X, and the two clamps 1 are used to clamp opposite ends of the optical fibers 1000 respectively and can be driven to slide towards or away from each other along the first direction X; the clamp 1 includes a plurality of positioning tubes 210 extending along the first direction X, and each positioning tube 210 is placed according to a preset rule, and each positioning tube 210 is used to pass through one optical fiber 1000.

[0031] Among them, each positioning tube 210 is placed according to a preset rule, which means that each positioning tube 210 can be placed according to requirements according to the manufacturing requirements of the straight pull beam combiner, so that the optical fibers 1000 passing through each positioning tube 210 can be placed according to requirements, so that the formed straight pull beam combiner meets the manufacturing requirements. For example, each positioning tube 210 can be placed in a regular hexagon. Specifically, each positioning tube 210 includes a central positioning tube 210a and a plurality of peripheral positioning tubes 210b, each peripheral positioning tube 210b is arranged outwardly around the central positioning tube 210a, and each outer positioning tube 210 of each peripheral positioning tube 210b is arranged in a regular hexagon. Of course, each positioning tube 210 can also be placed according to other rules, which is not limited here.

[0032] Each positioning tube 210 extends along the first direction X, that is, the axial direction of each positioning tube 210 is the first direction X, and each optical fiber 1000 is arranged in each positioning tube 210, so that each optical fiber 1000 can also be arranged according to the preset requirement. It should be noted that the number of positioning tubes 210 can be large, and the number of positioning tubes 210 can be greater than the number of optical fibers 1000. When installing, the optical fibers 1000 can be arranged from the center positioning tube 210a to the outer peripheral positioning tubes 210b, so that the optical fibers 1000 can be arranged to form a solid circular structure.

[0033] The manufacturing device of the straightening beam combiner in the embodiment can drive the two clamps 1 to slide away from each other to straighten the optical fibers 1000 to form a straightening beam combiner. In addition, the two clamps 1 each include a plurality of positioning tubes 210 arranged according to a preset rule. Before the straightening beam combiner is formed, each optical fiber 1000 can be arranged through each positioning tube 210, and each optical fiber 1000 can be positioned according to the preset rule by each positioning tube 210 before being straightened. The optical fibers 1000 do not need to be manually arranged, the arrangement accuracy of the optical fibers 1000 is improved, the fault tolerance of the straightening beam combiner is increased, the convenience of the optical fiber 1000 fusion and the glass tube 2 tapering is enhanced, and the yield of the product is improved.

[0034] In some embodiments, referring to Figure 4 Each positioning tube 210 includes a center positioning tube 210a and a plurality of peripheral positioning tubes 210b. Each peripheral positioning tube 210b is arranged around the center positioning tube 210a from the inside to the outside. When a plurality of optical fibers 1000 are arranged in the center positioning tube 210a and each peripheral positioning tube 210b from the inside to the outside, the optical fibers 1000 can also be arranged to form a circular solid structure distributed from the inside to the outside.

[0035] Optionally, the center lines of each peripheral positioning tube 210b in each peripheral positioning tube 210b are arranged in a regular hexagonal shape, so that each optical fiber 1000 is also arranged in a regular hexagonal shape.

[0036] In some embodiments, referring to Figure 4 and Figure 5The gripper 1 has a positioning cavity 221 extending along the first direction X, and each positioning tube 210 is received in the positioning cavity 221. The outer circumferential surface of each positioning tube 210 abuts the outer circumferential surfaces of the surrounding positioning tubes 210, and the outer circumferential surface of the outermost positioning tube 210 abuts the inner wall surface of the positioning cavity 221. In this way, each positioning tube 210 is surrounded and limited by the surrounding positioning tubes 210 or the inner wall surface of the positioning cavity 221, so that the radial position of each positioning tube 210 in the positioning cavity 221 is fixed, and no additional positioning structure is needed to position the positioning tubes 210 radially, thus simplifying the structure of the entire positioning seat 220.

[0037] Optionally, referring to Figure 5 The cross section of the positioning cavity 221 is a regular hexagon, and the inner wall surface of the positioning cavity 221 can abut the outermost positioning tubes 210, so as to ensure that the positioning tubes 210 are arranged according to the preset rule.

[0038] In this application, the installation stability of the positioning tubes 210 in the positioning cavity 221 is ensured by the mutual abutment of the positioning tubes 210 and the abutment and limitation of the inner wall surface of the positioning cavity 221. Of course, in order to improve the installation stability of the positioning tubes 210, the positioning tubes 210 can be further fixed by means of point gluing after being assembled in the positioning cavity 221.

[0039] In some embodiments, referring to Figure 1 The gripper 1 includes a clamping assembly 100 and a positioning assembly 200. The two clamping assemblies 100 of the two grippers 1 are located on the opposite outer sides of the two positioning assemblies 200, and the two clamping assemblies 100 are used to clamp the opposite ends of the optical fiber 1000, respectively. The positioning assembly 200 includes the positioning tubes 210.

[0040] Specifically, one positioning assembly 200 is combined with one clamping assembly 100 to form one holder 1, and the other positioning assembly 200 is combined with the other clamping assembly 100 to form the other holder 1, and in the same holder 1, the positioning tubes 210 in the positioning assembly 200 are used to arrange the optical fibers 1000 along a preset rule, and the clamping assembly 100 is used to clamp and fix the end portions of the optical fibers 1000, and when the two clamping assemblies 100 are driven to move away from each other, the optical fibers 1000 can be straightened to form a straightening beam combiner. In this embodiment, the optical fibers 1000 are clamped and fixed by the clamping assembly 100, which not only can firmly fix the end portions of the optical fibers 1000, but also facilitates the disassembly of the optical fibers 1000. It can be understood that in other embodiments of the present application, when the end portions of the optical fibers 1000 do not need to be disassembled, the clamping assembly 100 can also not be provided, and the end portions of the optical fibers 1000 can be directly welded to the positioning assembly 200, which is not limited herein.

[0041] In some embodiments, referring to Figure 2 , the positioning assembly 200 comprises a positioning seat 220 and a fixing structure 230, and each positioning tube 210 is arranged in the positioning seat 220. Specifically, a positioning cavity 221 is formed in the positioning seat 220, and the fixing structure 230 is used to fix the positioning seat 220, and the positioning seat 220 is detachably connected with the fixing structure 230. Through the positioning seat 220, each positioning tube 210 can be accommodated and limited, so that each positioning tube 210 can be arranged according to a preset rule, and the assembly reliability of each positioning tube 210 is ensured. In addition, through the fixing structure 230, the position of the positioning seat 220 can be kept stable during the straightening and combining process, so that the positioning effect of the positioning seat 220 and the positioning tube 210 on the optical fiber 1000 is ensured. In addition, through the detachable design of the positioning seat 220, the positioning seat 220 can be disassembled for replacement or maintenance, thereby improving the service life of the manufacturing device of the straightening beam combiner. Of course, in other embodiments of the present application, the positioning seat 220 can also be completely fixed in the fixing structure 230, or the positioning seat 220 can not be provided, and the positioning cavity 221 can be directly formed in the fixing structure 230, which is not limited herein.

[0042] In some embodiments, referring to Figure 2 and Figure 6 , the fixing structure 230 comprises a fixing seat 231 and a fixing cover 232, the positioning seat 220 is limited in the fixing seat 231, and the fixing cover 232 is arranged on the positioning seat 220. One end of the fixing cover 232 is connected with the fixing seat 231, and the other end of the fixing cover 232 is locked and connected with the fixing seat 231 by the first fastener.

[0043] Before the optical fibers 1000 are straightened, the fixing cover 232 is rotated to an open state, and each optical fiber 1000 is sequentially and correspondingly arranged in each positioning tube 210. After each optical fiber 1000 is arranged, the fixing cover 232 is rotated to cover the positioning seat 220, and the fixing cover 232 and the fixing seat 231 are locked by the first fasteners, so that the positioning seat 220 is clamped by the fixing seat 231 and the fixing cover 232, thereby ensuring the stability of the position of the positioning seat 220 during the process of moving the two clamps 1 away from each other to straighten the optical fibers 1000. It can be understood that in other embodiments of the present application, the positioning seat 220 can also be fixed by other means, such as clamping or bonding, etc. It can be understood that in other embodiments of the present application, the fixing cover 232 can also be slidably arranged in the fixing seat 231; or the fixing cover 232 can be arranged separately from the fixing seat 231, and the fixing cover 232 is arranged on the fixing seat 231 during use, and the fixing cover 232 and the fixing seat 231 are locked by the plurality of first fasteners.

[0044] In some embodiments, referring to Figure 6 , the fixing seat 231 has a first groove 2311 with an opening facing the fixing cover 232, and the fixing cover 232 has a second groove 2321 with an opening facing the fixing seat 231, and the first groove 2311 and the second groove 2321 jointly form a mounting groove for accommodating the positioning seat 220. In this embodiment, by arranging the first groove 2311, the fixing seat 231 can be limited by the first groove 2311 before the fixing cover 232 is tightly covered, so as to facilitate the arrangement of the optical fibers 1000 in the positioning tubes 210. By arranging the second groove 2321, the bonding strength between the fixing cover 232 and the positioning seat 220 can be improved, that is, the clamping firmness of the positioning assembly 200 to the positioning seat 220 is improved, and at the same time, the positioning seat 220 is at least partially protruded from the fixing seat 231, which facilitates the arrangement of the positioning seat 220 into the fixing seat 231 or the removal of the positioning seat 220 from the fixing seat 231.

[0045] Optionally, the first groove 2311 is arranged through the fixing seat 231 along the first direction X, and the second groove 2321 is arranged through the fixing cover 232 along the first direction X. During assembly, the positioning seat 220 can be inserted into the first groove 2311 along the first direction X, so as to avoid interference of the fixing cover 232 with the assembly of the positioning seat 220.

[0046] In some embodiments, referring to Figure 3The positioning seat 220 comprises a positioning portion 222 and a stop portion 223 connected with each other, the positioning tube 210 is arranged in the positioning portion 222, the fixing seat 231 has a first groove 2311 penetrating along the first direction X, the positioning portion 222 is arranged in the first groove 2311, and the stop portion 223 is stopped at the outer end surface of the first groove 2311. During assembly, the positioning seat 220 is inserted into the first groove 2311 from one end of the first groove 2311 along the first direction X until the stop portion 223 abuts against the end surface of the first groove 2311, so that the positioning seat 220 is limited along the first direction X, thereby facilitating the arrangement of the optical fiber 1000 in the positioning tube 210, and after the optical fiber 1000 is arranged, the fixing cover 232 is covered and locked.

[0047] Specifically, the stop portion 223 extends linearly from the bottom of one side of the positioning portion 222 along the first direction X to the direction away from the positioning portion 222, the width of the stop portion 223 along the second direction Y is greater than the width of the positioning portion 222 along the second direction Y, and the width of the stop portion 223 along the second direction Y is greater than the width of the first groove 2311 along the second direction Y, so that the part of the stop portion 223 beyond the first groove 2311 can abut against the outer end surface of the first groove 2311. The second direction Y is perpendicular to the first direction X, and the first direction Y is perpendicular to the vertical direction, and the first direction X is perpendicular to the vertical direction.

[0048] In some embodiments, referring to Figure 6 The fixing structure 230 further comprises a first magnetic member 233 and a second magnetic member 234, the first magnetic member 233 is installed on the fixing seat 231, and the second magnetic member 234 is installed on the fixing cover 232. When the fixing cover 232 is arranged on the fixing seat 231, the first magnetic member 233 and the second magnetic member 234 are attracted to each other, so as to ensure the connection reliability between the fixing cover 232 and the fixing seat 231.

[0049] In some embodiments, referring to Figure 1The clamping assembly 100 comprises a support base 110 and a pressing plate 120, the support base 110 is used for supporting the optical fiber 1000, and the pressing plate 120 is used for pressing on the optical fiber 1000. One end of the pressing plate 120 is rotationally connected with the support base 110, and the other end of the pressing plate 120 is lockingly connected with the support base 110 through a second fastener. When the optical fiber 1000 is installed, the optical fiber 1000 is sequentially inserted into each positioning tube 210 in the two positioning bases 220, and the opposite ends of the optical fiber 1000 are supported on the support base 110, then the pressing plate 120 is rotated to cover the support base 110, the pressing plate 120 is locked on the support base 110 through the second fastener, and the fixing cover 232 is rotated to cover the positioning base 220, and the fixing cover 232 is locked on the fixing base 231 through the first fastener, so that the installation of the optical fiber 1000 is completed. At this time, only the two clamping assemblies 100 need to be moved away from each other, and the optical fiber 1000 can be straightened. It can be understood that in other embodiments of the present application, the end of the optical fiber 1000 can also be fixed by a vacuum adsorption method, which is not limited here.

[0050] In one embodiment, referring to Figure 1 The clamping device 1 further comprises a mounting base plate 300, one clamping assembly 100 and the positioning assembly 200 adjacent to the clamping assembly 100 are fixed on one mounting base plate 300, and the other clamping assembly 100 and the positioning assembly 200 adjacent to the clamping assembly 100 are fixed on the other mounting base plate 300. Through the mounting base plate 300, the clamping assembly 100 and the positioning assembly 200 adjacent to the clamping assembly 100 can be synchronously slid. In actual driving, only the mounting base plate 300 needs to be driven to synchronously slide the clamping assembly 100 and the positioning assembly 200. It can be understood that in other embodiments of the present application, the mounting base plate 300 can not be provided, and the clamping assembly 100 can extend to the positioning assembly 200 in a connection mode, or the positioning assembly 200 can extend to the clamping assembly 100 in a connection mode, which is not limited here.

[0051] Optionally, referring to Figure 1 The clamping assembly 100 and the positioning assembly 200 are fixed on the mounting base plate 300 by screwing or bolting. In other embodiments, the clamping assembly 100 and the positioning assembly 200 can be fixed on the mounting base plate 300 by welding or bonding, which is not limited here.

[0052] Optionally, the mounting base plate 300 has a plurality of mounting holes 310, and each mounting hole 310 is used for mounting the mounting base plate 300 on the output end of the driving mechanism.

[0053] In some embodiments, referring to Figure 1The manufacturing device of the straight pull beam combiner further comprises a glass tube 2 arranged between the two holders 1, and the glass tube 2 is used to wrap each optical fiber 1000. When the optical fiber 1000 is installed, each optical fiber 1000 is arranged in each positioning tube 210 in one positioning seat 220, and then each optical fiber 1000 is arranged through the glass tube 2, and then each optical fiber 1000 arranged through the glass tube 2 is arranged in each positioning tube 210 in the other positioning seat 220, and finally the two ends of each optical fiber 1000 are clamped by the clamping assembly 100 on both sides. The glass tube 2 is used to wrap a plurality of input optical fibers 1000, which ensures the stability and integrity of the optical fiber 1000 during the process of pulling the cone, avoids the mode field change caused by the twisting of the optical fiber 1000, and is beneficial to maintaining the beam quality. In addition, the glass tube 2 also improves the process of fusion and cutting, improves the beam capacity and high power resistance performance of the beam combiner, and plays an important role in controlling the parameters in the process of pulling the cone.

[0054] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A manufacturing apparatus of a direct pull tensioner, characterized by, The holder comprises two clamps arranged at intervals along a first direction, and the two clamps are used for clamping opposite ends of an optical fiber and can be driven to slide towards or away from each other along the first direction; the clamps comprise a plurality of positioning tubes extending along the first direction, and each positioning tube is arranged according to a preset rule, and each positioning tube is used for allowing one optical fiber to pass through.

2. The apparatus of claim 1, wherein the apparatus is configured to form a straight tensile harness. Each positioning tube comprises a central positioning tube and a plurality of peripheral positioning tubes, and each peripheral positioning tube is sequentially arranged from inside to outside around the central positioning tube.

3. The apparatus of claim 1, wherein the apparatus is configured to form a straight tensile harness. The holder has a positioning cavity penetrating along the first direction, and each positioning tube is accommodated in the positioning cavity, the outer circumferential surface of each positioning tube abuts against the outer circumferential surfaces of a plurality of positioning tubes distributed thereon, and the outer circumferential surface of the outermost peripheral positioning tube abuts against the inner wall surface of the positioning cavity.

4. The apparatus according to any one of claims 1 to 3, wherein The holder comprises a clamping assembly and a positioning assembly, and the clamping assemblies of the two clamps are located on opposite outer sides of the positioning assembly, and the clamping assemblies are used for clamping opposite ends of the optical fiber, and the positioning assembly comprises the positioning tubes.

5. The apparatus of claim 4, wherein the first and second beams are aligned by a first and second alignment marks, respectively. The positioning assembly comprises a positioning seat and a fixing structure, each positioning tube passes through the positioning seat, and the fixing structure is used for fixing the positioning seat, and the positioning seat and the fixing structure are detachably connected.

6. The apparatus of claim 5, wherein the first and second beams are aligned by a first and second alignment marks, respectively. The fixing structure comprises a fixing seat and a fixing cover, the positioning seat is limited in the fixing seat, the fixing cover covers the positioning seat, one end of the fixing cover is connected with the fixing seat, and the other end of the fixing cover is locked and connected with the fixing seat through a first fastener.

7. The apparatus of claim 6, wherein the first and second beams are aligned by a first and second alignment marks, respectively. The positioning seat comprises a positioning part and a stop part connected with each other, each positioning tube passes through the positioning part, the fixing seat has a first groove penetrating along the first direction, the positioning part passes through the first groove, and the stop part is stopped at the outer end surface of the first groove.

8. The apparatus of claim 4, wherein the first and second beams are formed by a single beam. The clamping assembly comprises a support seat and a pressing plate, the support seat is used for supporting the optical fiber, and the pressing plate is used for pressing on the optical fiber, one end of the pressing plate is rotatably connected with the support seat, and the other end of the pressing plate is locked with the support seat through a second fastener.

9. The apparatus of claim 4, wherein the first and second beams are formed by a single beam. The holder further comprises a mounting base plate, and the clamping assembly and the positioning assembly are fixed to the mounting base plate.

10. The apparatus according to any one of claims 1 to 3, wherein The manufacturing device of the straight-pulling beam combiner further comprises a glass tube, the glass tube is arranged between the two clamps, and the glass tube is used for sleeving the optical fibers.

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