CN111736263B - Alignment device suitable for fiber splicing with different fiber diameters - Google Patents

Abstract

The invention provides an aligning device suitable for fusion splicing of optical fibers with different fiber diameters; the device comprises two groups of alignment mechanisms, wherein each group of alignment mechanism comprises a vertical lifting component, a plane fine adjustment component and an optical fiber positioning block; a first cam cavity is arranged in an adjusting seat of the plane fine adjustment assembly, a first cam shaft is arranged on an output shaft of the fine adjustment motor, the adjusting seat is also provided with an adjusting hole, an elastic component is fixed on the adjusting seat and provided with a through hole, a swing rod extends from the elastic component, a transmission rod is contacted with the side wall of the first cam shaft, and a steel ball is contacted with the upper end of the transmission rod; the optical fiber positioning block is fixed at the upper end of the swing rod; the lifting seat of the vertical lifting assembly is internally provided with a second cam cavity, a second cam shaft is arranged on an output shaft of the lifting motor, the lifting seat is provided with a lifting hole, and the upper end of the lifting rod is fixed at the bottom of the adjusting seat and the lower end of the lifting rod is abutted against the second cam shaft. The vertical lifting component is used for driving the alignment mechanism to move up and down, and the plane fine adjustment component is used for driving the swing rod of the elastic component to swing, so that optical fiber alignment operation is completed.

Description

Alignment device suitable for fiber splicing with different fiber diameters

technical field

The invention relates to an alignment device suitable for fusion splicing of optical fibers with different fiber diameters.

Background technique

The fiber optic cable fusion splicer uses a high-voltage arc to melt the two optical fiber sections gently and promotes the fusion of the two optical fibers into one, so as to realize the coupling of the optical fiber mode fields. However, the existing optical fiber fusion splicer is only suitable for optical fibers of the same fiber diameter for fusion splicing operations, and cannot be directly spliced for optical fibers of different fiber diameters, and the fusion effect is poor. The device to the same central position cannot meet the needs of various optical fiber fusion operations.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide an alignment device suitable for fusion splicing of optical fibers of different fiber diameters with reasonable structure and use.

In order to solve the above technical problems, the present invention provides an alignment device suitable for fusion splicing of optical fibers with different fiber diameters;

It includes two sets of alignment mechanisms, and each set of alignment mechanisms includes a vertical lift assembly, a plane fine-tuning assembly and an optical fiber positioning block;

The plane fine-tuning assembly includes an adjusting seat, an elastic member, a transmission rod, a steel ball, a fine-tuning motor, a first camshaft and an optical fiber positioning block. The output shaft extends into the first cam cavity of the adjustment seat, the first camshaft is installed on the output shaft of the fine-tuning motor, the adjustment seat also has an adjustment hole connecting its upper end surface and the first cam cavity, and the elastic member is fixedly connected to the adjustment seat The elastic member has a through hole at the position of the adjustment hole corresponding to the adjustment seat, the surface of the elastic member extends to the upper side of the through hole with an independent swing rod, and there is a steel ball between the end of the swing rod and the opening of the upper end of the through hole. The transmission rod is arranged in the through hole of the elastic member and the adjustment hole of the adjustment seat, the lower end of the transmission rod extends into the first cam cavity and is in contact with the side wall of the first camshaft, and the steel ball is in contact with the upper end of the transmission rod;

The optical fiber positioning block is fixed on the upper end of the corresponding pendulum rod, and the upper end face of the optical fiber positioning block is provided with a V-shaped groove for placing the optical fiber;

The vertical lifting assembly is arranged on the lower side of the plane fine-tuning assembly. The vertical lifting assembly includes a lifting seat, a lifting rod, a lifting motor, and a second camshaft. The lifting seat is provided with a second cam cavity for the installed second camshaft. The output shaft of the lifting motor extends into the second cam cavity of the lifting seat, the second camshaft is installed on the output shaft of the lifting motor, the lifting seat also has a lifting hole connecting its upper end surface and the second cam cavity, and the upper end of the lifting rod is fixed Connected to the bottom of the adjusting seat of the plane fine adjustment assembly, the lifting rod penetrates the lifting hole of the lifting seat, and the lower end of the lifting rod abuts on the side wall of the second camshaft.

After adopting this structure, the lift motor of the vertical lift assembly is used to drive the plane fine-tuning assembly and the optical fiber positioning block to move up and down as a whole to achieve the purpose of adjusting the heights of the two optical fiber positioning blocks, and then the fine-tuning motor of the plane fine-tuning assembly is used to drive the elastic member. The end of the pendulum rod swings to realize the movement of the two fiber end faces in the plane until the centers of the two fibers are aligned, and the alignment of the two fibers with different fiber diameters is completed.

The beneficial technical effects of the invention are as follows: easy operation and high efficiency, can realize the alignment of optical fibers with diameters of φ125um to φ400um, and ensure the welding effect of optical fibers with different fiber diameters.

For a clearer understanding of the technical content of the present invention, the alignment device suitable for fusion splicing of optical fibers with different fiber diameters is referred to as the alignment device in the following.

The pendulum rod of the alignment device drives the corresponding optical fiber positioning blocks to swing, and the pendulum rods of the elastic members in the two sets of alignment mechanisms have symmetrical projection patterns on the plane where the end faces of the optical fibers to be spliced are located; after adopting this structure, the two optical fiber positioning blocks The running track of the vertical plane has an intersection, which can make the centerlines of two fibers with different fiber diameters on the same straight line.

The transmission rod of the alignment device includes a first rod body at the upper end and a second rod body at the lower end. The upper end surface of the second rod body is provided with a positioning groove, and the lower end of the first rod body extends into the positioning groove of the second rod body. A rod body and a second rod body are fixed, and the upper end of the first rod body is provided with a first groove that fits the steel ball; after adopting this structure, the structure of the transmission rod is specified, which is convenient for production and assembly.

The adjusting seat of the aligning device includes a seat body and an adjusting block. The seat body is provided with a first cam cavity with a first convex installed therein. The adjusting block is fixedly connected to the upper end face of the seat body. The adjusting block includes a block body and an installation baffle. The block body is provided with a first adjustment stage hole running through its upper and lower end faces, the diameter of the lower part of the first adjustment stage hole is larger than the diameter of the upper part of the second rod body, and the first adjustment stage hole position of the block body corresponding to the installation baffle is opened with a first adjustment stage hole. Two adjustment stage holes, the diameter of the second adjustment stage hole is larger than the diameter of the lower part of the second rod body and smaller than the diameter of the upper part of the second rod body, the installation baffle is fixed on the lower part of the block body, and the first adjustment stage hole of the block body corresponds to the installation baffle The second adjustment stage holes of the two adjustment stages together form the adjustment holes of the adjustment seat, and the adjustment holes are communicated with the first cam cavity.

The diameter of the upper part of the second rod body of the transmission rod is larger than the diameter of the lower part of the second rod body.

After adopting such a structure, the structure of the adjusting seat is specified, which is convenient for production and assembly.

The alignment device also includes a boat-shaped mounting frame, two sets of alignment mechanisms are arranged in the boat-shaped mounting frame, and the lifting bases of the vertical lifting components of the two sets of alignment mechanisms are fixedly connected to the boat-shaped mounting frame.

The two sides of the adjusting seat of the plane fine-tuning assembly in the alignment device are respectively fixed and connected to guide rods, the lower end of the guide rod penetrates the boat-shaped mounting frame, and the outer wall of the bottom of the guide rod on the lower side of the boat-shaped mounting frame is provided with a convex ring outwards, and the guide rod is also sleeved outside. There is a return spring, the upper end of the return spring abuts on the boat-shaped mounting frame, and the lower end of the return spring abuts on the convex ring of the guide rod; after adopting this structure, the guide rod and the return spring can automatically reset the adjustment seat after use.

In this alignment device, the first camshaft and the cavity wall of the first cam cavity are matched by several bearings; the second camshaft and the cavity wall of the second cam cavity are also matched by several bearings; such a structure is adopted Afterwards, the friction between the first camshaft and the second camshaft and their corresponding cam chambers is reduced, and the service life is improved.

In the alignment device, the side wall of the first camshaft of the plane fine-tuning component is installed with a bearing in contact with the lower end of the transmission rod; the side wall of the second camshaft of the vertical lifting component is installed with a bearing in contact with the lower end of the lifting rod; using such a After the structure, the friction between the transmission rod, the lifting rod and their corresponding cams is reduced, and the service life is improved.

Description of drawings

FIG. 1 is a perspective view of the use state of the embodiment of the alignment device.

FIG. 2 is a top view of the use state of the embodiment of the alignment device.

FIG. 3 is a cross-sectional view taken along the direction E-E of FIG. 2 .

FIG. 4 is an enlarged view of part A of FIG. 3 .

FIG. 5 is an enlarged view of part B of FIG. 3 .

FIG. 6 is an enlarged view of the C part of FIG. 3 .

FIG. 7 is a cross-sectional view taken along the direction F-F of FIG. 2 .

FIG. 8 is a motion trajectory diagram of two optical fibers in the use state of the embodiment of the alignment device.

Detailed ways

As shown in Figures 1 to 7

The alignment device includes a ship-shaped mounting frame 1 and two sets of alignment mechanisms, the two sets of alignment mechanisms are independently arranged in the ship-shaped mounting frame 1, and the two sets of alignment mechanisms are arranged symmetrically on the left and right.

Each group of alignment mechanisms includes a vertical lifting assembly, a plane fine-tuning assembly and an optical fiber positioning block 2 .

The plane fine adjustment assembly includes an adjustment seat, an elastic member 32 , a transmission rod 34 , a steel ball 37 , a fine adjustment motor 35 and a first camshaft 36 .

The transmission rod 34 includes a first rod body 34a at the upper end and a second rod body 34b at the lower end. The upper end surface of the second rod body 34b is provided with a positioning groove 34b1, and the lower end of the first rod body 34a extends into the positioning groove 34b1 of the second rod body 34b. Inside, the first rod body 34a and the second rod body 34b are fixed, the upper end of the first rod body 34a is provided with a first groove 34a1 that fits the steel ball 37, and the diameter of the upper part of the second rod body 34b of the transmission rod 34 is larger than that of the lower part of the second rod body 34b. diameter.

The adjustment seat includes a seat body 31a and an adjustment block. The seat body 31a has a first cam cavity 31a1 with a first camshaft 36 installed therein. The adjustment block is fixed on the upper end face of the seat body 31a by bolts, and the adjustment block also includes a block body. 31b and the mounting baffle 31c, the block body 31b has a first adjustment stage hole 31b1 penetrating its upper and lower end faces, the diameter of the lower part of the first adjustment stage hole 31b1 is larger than the diameter of the upper part of the second rod body 34b, the corresponding block on the mounting baffle 31c The first adjustment stage hole 31b1 of the main body 31b is provided with a second adjustment stage hole 31c1. The diameter of the second adjustment stage hole 31c1 is larger than the diameter of the lower part of the second rod body 34b and smaller than the diameter of the upper part of the second rod body 34b. The mounting baffle 31c is fixed In the lower part of the block body 31b, the first adjustment stage hole 31b1 of the block body 31b and the second adjustment stage hole 31c1 corresponding to the mounting baffle 31c together form the adjustment hole of the adjustment seat, and the adjustment hole communicates with the first cam cavity 31a1.

Both sides of the seat body 31a are respectively fixed with guide rods 31d by bolts. The guide rods 31d penetrate through the boat-shaped mounting frame 1. The lower end of the guide rods 31d protrudes from the lower side of the boat-shaped mounting frame 1. 31d1, the diameter of the blocking piece 31d1 is larger than the diameter of the guide rod 31d, and then the blocking piece 31d1 forms a convex ring at the bottom of the guide rod 31d, the guide rod 31d is also sheathed with a return spring 31e, and the upper end of the return spring 31e abuts against the boat-shaped mounting frame 1. On the bottom surface, the lower end of the return spring 31e abuts on the convex ring of the guide rod 31d.

The elastic member 32 is glued and fixed on the upper end surface of the adjustment block of the adjustment seat, the elastic member 32 has a through hole 32a at the position corresponding to the adjustment hole of the adjustment seat, and the side wall surface of the elastic member 32 extends upward with an independent swing rod 32b. 32b extends to the upper side of the through hole 32a, and there is a gap 32c for accommodating the steel ball 37 between the end of the swing rod 32b and the opening of the upper end of the through hole 32a.

The optical fiber positioning block 2 is glued and fixed on the upper side of the corresponding pendulum rod 32b, and the upper end surface of the optical fiber positioning block 2 is provided with a V-shaped groove 21 for placing the optical fiber.

The fine adjustment motor 35 is fixed on the seat body 31a of the adjustment seat by bolts, the output shaft of the fine adjustment motor 35 extends into the first cam cavity 31a1 of the adjustment seat, the first cam shaft 36 is installed on the output shaft of the fine adjustment motor 35, the first cam The shaft 36 is matched with the cavity wall of the first cam cavity 31a1 through a plurality of bearings 6, and the side wall of the first camshaft 36 of the plane fine adjustment assembly is mounted with a bearing 6 that contacts the lower end of the transmission rod 34.

The transmission rod 34 is located in the through hole 32a of the elastic member 32 and the adjustment hole of the adjustment seat, the second rod body 34b of the transmission rod 34 extends into the first cam cavity 31a1 of the adjustment seat, and the second rod body 34b abuts against the first cam On the side wall of the shaft 36, the steel ball 37 is in contact with the first groove 34a1 of the first rod body 34a.

In the initial state, the centerlines of the V-shaped grooves 21 of the optical fiber positioning block 2 are on the same straight line, and the pendulum rods 32b of the two sets of alignment mechanisms drive the corresponding optical fiber positioning blocks 2 to move. The projection figure of the rod 32b on the plane where the end face of the optical fiber to be spliced is symmetrical. As shown in FIG. 8 , the optical fibers placed in the two sets of alignment mechanisms are only moved under the action of the plane fine-tuning assembly, where M is the motion trajectory of the optical fiber 51, N is the motion trajectory of the optical fiber 52, and the intersection point of the optical fibers on both sides is P.

The vertical lifting assembly is arranged on the lower side of the plane fine-tuning assembly. The vertical lifting assembly includes a lifting seat 41, a lifting rod 43, a lifting motor 42 and a second camshaft 44. The lifting seat 41 is fixedly connected to the boat-shaped mounting frame 1 by bolts. The seat 41 is provided with a second cam cavity 41a of the second camshaft 44 installed, the lift motor 42 is fixedly connected to the lift seat 41, the output shaft of the lift motor 42 extends into the second cam cavity 41a of the lift seat 41, the second The camshaft 44 is installed on the output shaft of the lift motor 42, and the lift seat 41 also has a lift hole connecting its upper end surface and the second cam cavity 41a, between the output shaft of the lift motor 42 and the cavity wall of the second cam cavity 41a. Through the cooperation of the two bearings 6 , the upper end of the lifting rod 43 is fixed on the bottom of the adjusting seat of the plane fine-tuning assembly through screw fitting. The second camshaft 44 is also matched with the cavity wall of the second cam cavity 41a through a plurality of bearings 6, and the side wall of the second camshaft 44 of the vertical lifting assembly is installed with a bearing 6 in contact with the lower end of the lifting rod 43.

When in use, place two optical fibers 51 and 52 with different fiber diameters (the two optical fibers are the optical fiber 51 with a cladding of 0.4 mm and an optical fiber 52 with a cladding of 0.125 mm) on the fiber positioning blocks of the two sets of alignment mechanisms respectively. 2, start the lift motor 42 of the vertical lift assembly, the lift motor 42 drives the second camshaft 44 to rotate, and the lift rod 43 drives the plane fine-tuning assembly and the optical fiber positioning block 2 to move up and down as a whole under the action of the second camshaft 44. Adjust the height of the two optical fiber positioning blocks 2 through the vertical lifting assembly;

Restart the fine-tuning motor 35 of the plane fine-tuning assembly, the fine-tuning motor 35 drives the first camshaft 36 to rotate, the first camshaft 36 drives the transmission rod 34 to move, the upper end of the transmission rod 34 acts on the steel ball 37 to move, and then the steel ball 37 pushes the elastic member 32 The end of the pendulum rod 32b swings so that the end faces of the two optical fibers 51 and 52 move in the plane until the centers of the two optical fibers 51 and 52 are aligned, and the alignment of the two optical fibers 51 and 52 with different fiber diameters is completed.

The above is only an embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several modifications and improvements can be made, and these should also be regarded as It belongs to the protection scope of the present invention.

Claims (3)

1. an alignment device suitable for optical fiber fusion of different fiber diameters, is characterized in that: It includes two sets of alignment mechanisms, and each set of alignment mechanisms includes a vertical lift assembly, a plane fine-tuning assembly and an optical fiber positioning block; The plane fine-tuning assembly includes an adjusting seat, an elastic member, a transmission rod, a steel ball, a fine-tuning motor, a first camshaft and an optical fiber positioning block. The output shaft extends into the first cam cavity of the adjustment seat, the first camshaft is installed on the output shaft of the fine-tuning motor, the adjustment seat also has an adjustment hole connecting its upper end surface and the first cam cavity, and the elastic member is fixedly connected to the adjustment seat The elastic member has a through hole at the position of the adjustment hole corresponding to the adjustment seat, the surface of the elastic member extends to the upper side of the through hole with an independent swing rod, and there is a steel ball between the end of the swing rod and the opening of the upper end of the through hole. The transmission rod is arranged in the through hole of the elastic member and the adjustment hole of the adjustment seat, the lower end of the transmission rod extends into the first cam cavity and is in contact with the side wall of the first camshaft, and the steel ball is in contact with the upper end of the transmission rod; The optical fiber positioning block is fixed on the upper end of the corresponding pendulum rod, and the upper end face of the optical fiber positioning block is provided with a V-shaped groove for placing the optical fiber; The vertical lifting assembly is arranged on the lower side of the plane fine-tuning assembly. The vertical lifting assembly includes a lifting seat, a lifting rod, a lifting motor, and a second camshaft. The lifting seat is provided with a second cam cavity for the installed second camshaft. The output shaft of the lifting motor extends into the second cam cavity of the lifting seat, the second camshaft is installed on the output shaft of the lifting motor, the lifting seat also has a lifting hole connecting its upper end surface and the second cam cavity, and the upper end of the lifting rod is fixed connected to the bottom of the adjustment seat of the plane fine-tuning assembly, the lifting rod penetrates the lifting hole of the lifting seat and the lower end of the lifting rod abuts on the side wall of the second camshaft; The pendulum rod drives the corresponding optical fiber positioning block to move, and the projection figures of the pendulum rods of the elastic members in the two sets of alignment mechanisms on the plane where the end faces of the optical fibers to be spliced are symmetrical; The transmission rod includes a first rod body at the upper end and a second rod body at the lower end. The upper end surface of the second rod body is provided with a positioning groove, and the lower end of the first rod body extends into the positioning groove of the second rod body. It is fixed with the second rod body, and the upper end of the first rod body is provided with a first groove that fits the steel ball; The adjusting seat includes a seat body and an adjusting block. The seat body is provided with a first cam cavity in which a first camshaft is installed. The adjusting block is fixedly connected to the upper end face of the seat body. The adjusting block includes a block body and an installation baffle plate. The block body is provided with a first adjustment stage hole penetrating its upper and lower end faces, the diameter of the lower part of the first adjustment stage hole is larger than the diameter of the upper part of the second rod body, and a second adjustment stage hole position corresponding to the block body is opened on the mounting baffle. Adjustment stage hole, the diameter of the second adjustment stage hole is larger than the diameter of the lower part of the second rod body and smaller than the diameter of the upper part of the second rod body, the installation baffle is fixed on the lower part of the block body, and the first adjustment stage hole of the block body corresponds to the installation baffle. The holes in the second adjustment stage together form the adjustment holes of the adjustment seat, and the adjustment holes communicate with the first cam cavity; The diameter of the upper part of the second rod body of the transmission rod is larger than the diameter of the lower part of the second rod body; It also includes a ship-shaped mounting frame, two sets of alignment mechanisms are arranged in the ship-shaped mounting frame, and the lifting bases of the vertical lifting components of the two sets of alignment mechanisms are fixedly connected to the ship-shaped mounting frame; The two sides of the adjustment seat of the plane fine-tuning assembly are respectively fixed and connected with guide rods, the lower end of the guide rod penetrates the boat-shaped mounting frame, the outer wall of the bottom of the guide rod on the lower side of the boat-shaped mounting frame is provided with a convex ring outward, and the guide rod is also sheathed with a return spring , the upper end of the return spring abuts on the boat-shaped mounting frame, and the lower end of the return spring abuts on the convex ring of the guide rod. 2. The alignment device suitable for optical fiber fusion of different fiber diameters according to claim 1, is characterized in that: The first camshaft and the cavity wall of the first cam cavity are matched by several bearings; the second camshaft and the cavity wall of the second cam cavity are also matched by several bearings. 3. The alignment device suitable for fusion splicing of optical fibers with different fiber diameters according to claim 1, is characterized in that: The side wall of the first camshaft of the plane fine-tuning assembly is installed with a bearing in contact with the lower end of the transmission rod; the side wall of the second camshaft of the vertical lifting assembly is installed with a bearing in contact with the lower end of the lifting rod.

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