CN210294600U

CN210294600U - Quick core adjusting mechanism of optical fiber fusion splicer

Info

Publication number: CN210294600U
Application number: CN201921619275.8U
Authority: CN
Inventors: 焦阳
Original assignee: Nanjing Dvp OETech Co ltd
Current assignee: Nanjing Dvp OETech Co ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-04-10
Anticipated expiration: 2029-09-26

Abstract

The utility model provides a mechanism of transferring core fast of optical fiber splicer, transfer the core subassembly including transferring core frame and both sides, the core subassembly is transferred to both sides and is central symmetry and install on transferring the core frame, and the core subassembly is transferred including ceramic mount pad, actuating mechanism and spring to both sides, and ceramic mount pad has injection moulding integrated into one piece's upper portion, middle part and bottom, bottom and transfer core frame fixed connection, and the middle part has the sloping arm, and the sloping arm has the portion of reducing the thickness with the junction of bottom, and upper portion is as ceramic installation position, the crisscross distribution of ceramic installation position. The utility model discloses possess compact structure, adjust advantages such as the core precision is high, easily make.

Description

Quick core adjusting mechanism of optical fiber fusion splicer

Technical Field

The utility model discloses optical fiber splicer's inner structure improves, concretely relates to optical fiber splicer fast core adjusting mechanism.

Background

The fusion splicer is a device which melts two flat fiber end faces by using the high temperature formed instantly by the electric arc discharged by a pair of electrodes and simultaneously collimates and pushes the fibers at two ends to combine the two fibers together. The method is widely applied to engineering construction in the communication industry.

In optical fiber fusion, the alignment accuracy directly affects the fusion loss, thus requiring precise alignment of the two fibers. Since the cladding diameter of the common standard single-mode optical fiber is 125 microns, and the core diameter is 8-10 microns, the alignment of the optical fiber requires a core adjusting structure with high resolution requirement. At present, most of core adjusting mechanisms of optical fiber fusion splicers are realized by deformation micro-motion of structures, or metal ceramic mounting seats are processed into structures easy to deform by wire cutting, or parts are embedded into elastic sheet structures, and the core adjusting mechanism has the advantages that the core adjusting precision is higher, but the structure is more complex, the manufacturing difficulty and the cost are higher, and the qualification rate and the consistency control difficulty of the parts are higher.

The applicant actively improves and innovates for two times on the basis of ZL201821914481.7, and finally creates the technical scheme of the utility model.

Disclosure of Invention

The purpose of the invention is as follows: in order to improve accent core precision, reduce and transfer core mechanism cost and make the degree of difficulty, guarantee good fatigue life, the utility model provides an optical fiber splicer fast core mechanism of transferring.

The technical scheme is as follows: in order to solve the technical problem, the utility model provides a quick core adjusting mechanism of an optical fiber splicer, including adjusting core frame and both sides and adjusting the core subassembly, the core subassembly is adjusted to both sides and is installed on adjusting core frame in central symmetry, and the core subassembly is adjusted to both sides includes ceramic mount pad, actuating mechanism and spring, ceramic mount pad has injection moulding integrated into one piece's upper portion, middle part and bottom, and upper portion is as ceramic installation position, and ceramic installation position staggered distribution; the middle part is provided with a hollowed-out oblique arm, and a thinning part is arranged between the middle part and the bottom; the bottom is connected with the aligning frame through positioning columns and screw connecting fasteners, and the spring is clamped between the ceramic mounting seat and the top rack.

Specifically, an included angle of 45 degrees is formed between the middle part and the bottom part.

Specifically, the thinned portion forms a straight groove having a semicircular cross section.

Specifically, the driving mechanism comprises a motor, a first gear, a second gear, a third gear and a lead screw, wherein the first gear is fixedly arranged on an output shaft of the motor; the second gear is a middle duplicate gear and is arranged below the core adjusting frame through a gear shaft, the second gear is simultaneously meshed with the first gear and the third gear, and the gear shaft is fixed with the core adjusting frame through a stop screw; and the third gear is fixedly connected with the screw rod.

Specifically, the lead screw top supports and leans on ceramic mount pad, and the lead screw top has the arc surface, is equipped with spacing portion between lead screw tail end and the gear three.

When the double-core-alignment mechanism is used, the core-alignment assemblies on the two sides are installed in central symmetry and work simultaneously, and double core alignment is realized. Specifically, the motors on two sides output rotation simultaneously, after the rotation is reduced by the gear sets on two sides, the output screw rod moves vertically upwards to push the ceramic mounting seats on two sides to rotate slightly around the joint of the bottom and the middle of the ceramic mounting seats, and the ceramic mounting seats on two sides move simultaneously to drive two sections of optical fibers in the ceramic V-shaped grooves mounted on the upper portions of the two sides to be aligned quickly and accurately, so that a core adjusting process is completed.

Has the advantages that:

1. the core adjusting mechanism has compact structure, high core adjusting precision and high double core aligning speed.

2. The center of the mechanism is symmetrically distributed, the core adjusting components at two sides are the same, the consistency is good, the types of parts are few, and the cost is low

3. The ceramic mounting seat, the core adjusting frame and the gears 1-3 are all injection molding parts, and are low in manufacturing difficulty, low in cost and good in elasticity.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic structural view of the ceramic mount of FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 3 at P;

FIG. 5 is a schematic illustration of the gear train of FIG. 1;

fig. 6 is a plan view of fig. 1.

Detailed Description

Example (b):

the optical fiber fusion splicer rapid core adjusting mechanism of the embodiment is shown in fig. 1 and 2, and comprises a core adjusting frame 1 and two side core adjusting assemblies. The two side core adjusting components are arranged on the core adjusting frame in a central symmetry manner. The core adjusting assembly consists of a ceramic mounting seat 2, a motor 3, a first gear 4, a second gear 5, a third gear 6, a bearing 7, a bearing pressing ring 8, a gear shaft 9, a lead screw 10, a nut 11 and a return spring 12. The upper part of the ceramic mounting seat 2 is provided with a ceramic V-shaped groove 13 in an adhesion mode. The bottom of the return spring 12 is arranged on the ceramic mounting seat 2, and the upper part of the return spring is connected with the rack; the return spring 12 provides downward pressure and the screw 10 provides upward thrust to realize accurate alignment of the ceramic mounting seat 2.

As shown in fig. 3 and 4, the ceramic mounting seat has an upper portion a, a middle portion B, and a bottom portion C, the bottom plane contacts with the core-adjusting frame 1, the inner portion of the oblique arm of the middle portion B is inclined at an angle of 45 ° with the bottom portion C, and a part of a joint P between the bottom portion C and the middle portion B is thinned by two semi-cylindrical straight grooves or thinned by other shapes; 4 holes at two positions of K1 and K2 are positioning column mounting holes. For improving the assembly precision, the bottom of the ceramic mounting seat 2 is positioned through a positioning column, and is fixedly connected with the core adjusting frame 1 through screws, and each ceramic mounting seat 2 in the optical fiber direction uses two screws so as to avoid the side turning of the ceramic mounting seat 2. The upper parts of the ceramic mounting seats 2 on the two sides are distributed in a staggered way to form certain dislocation. The ceramic mounting seat 2 is formed by injection molding of PA66+ GF15 material, and has the advantages of excellent toughness, good wear resistance and small influence of air temperature.

As shown in fig. 5, the first gear 4, the second gear 5 and the third gear 6 form a core adjusting and speed reducing part to ensure the resolution of the core adjusting mechanism, and the first gear 4 is fixedly installed on an output shaft of the stepping motor through tight fit; the second gear 5 is a duplicate gear, is used as an intermediate gear, is simultaneously meshed with the first gear 4 and the third gear 6, and is arranged below the core adjusting frame through a gear shaft 7, the gear shaft 7 is fixed with the core adjusting frame 1 through a stop screw, and the stop screw is arranged at a position D in the drawing.

The top end of the screw rod 10 is contacted with the ceramic mounting seat 2, the top end of the screw rod 10 is a semispherical surface, and the tail end of the screw rod is fixedly connected with the gear III 6 through interference fit, namely, the gear III 6 is fixedly connected with the screw rod 10 through shaft hole fit. The hemispherical surface at the top end of the lead screw 10 ensures that the rotation of the ceramic mounting seat 2 does not interfere with the lead screw 10. The nut 11 is provided with an internal thread matched with the screw rod 10 and an external thread matched with the core adjusting frame 1; the nut 11 is a copper nut. In order to ensure the precision, the nut 11 is matched with the core adjusting frame 1 through threads and step end faces, and the connection is stable; the threaded connection between the nut 11 and the screw 10 is free of play.

As shown in FIG. 6, the two-side core adjusting assembly is installed in a central symmetry mode, the center of symmetry is E, the two sides work simultaneously, and the core adjusting precision and speed are high.

When the device is used, the motors 3 on the two sides output rotation simultaneously, after the speed is reduced by the gear sets 4-6 on the two sides, the output screw 10 moves vertically upwards to push the ceramic mounting seats 2 on the two sides to rotate slightly around the joint P between the bottom and the middle of the ceramic mounting seats 2, and the ceramic mounting seats 2 on the two sides move simultaneously to drive two sections of optical fibers in the ceramic V-shaped grooves 13 mounted on the upper portions of the two sides to be aligned quickly and accurately, so that a core adjusting process is completed.

The utility model discloses a core mechanism is transferred to optical fiber splicer provides a brand-new body structure, the preferred embodiment that the mode with the example provided above. Numerous modifications, changes, and substitutions will occur to those skilled in the art without departing from the invention. All the components not specified in the present embodiment can be realized by the prior art.

Claims

1. The utility model provides an optical fiber splicer fast core adjusting mechanism, transfers the core subassembly including transferring core frame and both sides, and the core subassembly is transferred to both sides and is central symmetry and install on transferring the core frame, and the core subassembly is transferred to both sides includes ceramic mount pad, actuating mechanism and spring, its characterized in that: the ceramic mounting seat is provided with an upper part, a middle part and a bottom which are integrally formed by injection molding, the upper part is used as a ceramic mounting position, and the ceramic mounting positions are distributed in a staggered manner; the middle part is provided with a hollowed-out oblique arm, and a thinning part is arranged between the middle part and the bottom; the bottom is connected with the aligning frame through positioning columns and screw connecting fasteners, and the spring is clamped between the ceramic mounting seat and the top rack.

2. The optical fiber fusion splicer fast core adjusting mechanism according to claim 1, characterized in that: and an included angle of 45 degrees is formed between the middle part and the bottom part.

3. The optical fiber fusion splicer fast core adjusting mechanism according to claim 2, characterized in that: the shape of the thinning part is a semicircular straight groove.

4. The optical fiber fusion splicer fast core adjusting mechanism according to claim 3, characterized in that: the driving mechanism comprises a motor, a first gear, a second gear, a third gear and a lead screw, wherein the first gear is fixedly arranged on an output shaft of the motor; the second gear is a middle duplicate gear and is arranged below the core adjusting frame through a gear shaft, the second gear is simultaneously meshed with the first gear and the third gear, and the gear shaft is fixed with the core adjusting frame through a stop screw; and the third gear is fixedly connected with the screw rod.

5. The optical fiber fusion splicer fast core-adjusting mechanism according to claim 4, wherein: the top end of the lead screw is abutted against the ceramic mounting seat, the top end of the lead screw is provided with an arc surface, and a limiting part is arranged between the tail end of the lead screw and the third gear.