CN214528724U

CN214528724U - Collimation adjusting device for optical fiber drawing tower

Info

Publication number: CN214528724U
Application number: CN202120765709.6U
Authority: CN
Inventors: 池行强; 蔡德惠; 刘坤
Original assignee: Wuhan Shengxin Photoelectric Technology Co ltd
Current assignee: Wuhan Shengxin Photoelectric Technology Co ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-10-29
Anticipated expiration: 2031-04-14

Abstract

The utility model provides a collimation adjusting device of an optical fiber drawing tower, wherein a prefabricated rod extends along the up-down direction, a perforation coaxial with the prefabricated rod is arranged in the center in a penetrating way, and the perforation is used for a fish wire to pass through; the mounting base is used for detachably mounting the preform rod on the mounting base; the mounting seat is movably mounted on the die holder; the die holder is movably arranged on the base; the adjusting mechanism is used for adjusting the position of the die holder on the base so as to enable the lower end of the preform to be opposite to the heating furnace; the horizontal adjusting mechanism is used for adjusting the mounting base so as to enable the fishing line in the prefabricated rod to be vertically arranged. The utility model provides a technical scheme's beneficial effect is: the fish wire in the prefabricated stick is ensured to be at the center of the heating furnace, the aim of quickly adjusting the concentricity between the optical fiber prefabricated stick and the high-temperature heating furnace is fulfilled, the production efficiency of the optical fiber drawing process is improved, and the optical fiber drawing quality is ensured.

Description

Collimation adjusting device for optical fiber drawing tower

Technical Field

The utility model relates to an optical fiber manufacturing equipment technical field especially relates to an optical fiber drawing tower collimation adjustment utensil.

Background

The optical fiber drawing process is a process operation process of heating and melting a prepared optical fiber preform by using certain heating equipment, drawing the optical fiber preform into a fine optical fiber with the diameter meeting the requirement, and ensuring that the core/package diameter ratio and the refractive index distribution form of the optical fiber are unchanged; in the operation process of the drawing process, the most important technology is how to ensure that the surface of the optical fiber is not damaged and the outer diameter size and the refractive index distribution form of the core/cladding are accurately controlled; if the surface of the optical fiber is damaged, the mechanical strength and the service life of the optical fiber can be influenced, the outer diameter fluctuates, the scattering loss of the optical fiber waveguide can be caused due to the imperfect structure, the connection loss can be increased when the optical fiber is connected, in the process, the concentricity of the optical fiber preform and the high-temperature heating furnace is controlled and adjusted to be particularly important, the out-of-roundness of the optical fiber cladding is directly influenced by the concentricity, the concentricity of the optical fiber coating layer is not uniform, the heating of the preform is uniform, and other process problems are solved, meanwhile, the sealing effect of the high-temperature heating furnace is also influenced, and the optical fiber drawing quality is further influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, in order to solve the above problem, an embodiment of the present invention provides a collimation adjustment device for an optical fiber drawing tower.

An embodiment of the utility model provides an optic fibre wire drawing tower collimation adjustment utensil, include:

the prefabricated bar extends along the vertical direction, a through hole coaxial with the prefabricated bar penetrates through the center of the prefabricated bar, and the through hole is used for a fish wire to pass through;

the mounting seat is detachably mounted on the prefabricated rod;

the mounting seat is movably mounted on the die holder;

the die holder is movably arranged on the base;

the adjusting mechanism is used for adjusting the position of the die holder on the base so that the lower end of the preform is opposite to the heating furnace;

and the horizontal adjusting mechanism is used for adjusting the mounting seat so as to enable the fishing line in the prefabricated rod to be vertically arranged.

The preform rod comprises a rod body and a cover body, wherein the rod body is in a cylindrical arrangement with a closed upper end and an open lower end, a first through hole is formed in the upper end of the rod body, a boss is convexly arranged in the middle of the cover body upwards, the cover body covers the lower end of the rod body, and a second through hole is formed in the position, opposite to the first through hole, of the cover body.

Furthermore, a groove with an upward notch is formed in one end, facing the rod body, of the boss, and the groove is arranged in an inverted cone shape.

Further, the boss lateral wall is equipped with the annular groove, install ring seal in the annular groove, ring seal with prefabricated excellent interference fit.

Furthermore, the inner side wall of the lower end of the rod body is arranged in a step shape to form an annular resisting part, and the annular resisting part is abutted to the boss.

Furthermore, the mounting seat, the die holder and the relative position in the middle of the base are all provided with a mounting hole extending along the vertical direction in a penetrating manner, the preform is mounted in the mounting hole, the lower surface of the base is rotatably provided with a supporting block, and the supporting block abuts against the preform when rotating to the lower side of the mounting hole and is used for supporting the preform.

Furthermore, the adjusting mechanism comprises four adjusting components which are uniformly arranged around the die holder at intervals, and each adjusting component comprises a fixed seat, a first screw rod and a knob;

the fixing seat is fixedly connected with the base, a first threaded hole is formed in the fixing seat in a penetrating mode and is horizontally arranged, one end of the first screw rod is fixedly connected with the knob, and the other end of the first screw rod penetrates through the first threaded hole and is used for abutting against the die holder.

Furthermore, more than three grooves are formed in the upper surface of the die holder and are circumferentially arranged at intervals in the mounting seat;

horizontal adjustment mechanism includes a plurality of adjustment subassemblies, and is a plurality of adjustment subassembly and a plurality of recess one-to-one sets up, the adjustment subassembly includes second lead screw and handle, run through on the mount pad and be equipped with a plurality of second screw holes that extend from top to bottom along, it is a plurality of second screw hole with the recess one-to-one sets up, the second lead screw install in the screw hole, the lower extreme is located in the recess, upper end fixedly connected with the handle.

Further, the adjusting assemblies are four.

The embodiment of the utility model provides a beneficial effect that technical scheme brought is: utilize adjustment mechanism to adjust the position of die holder on the base, make the fish tape in the perform relative with the heating furnace, utilize horizontal adjustment mechanism to adjust the mount pad, adjust the incline direction and the inclination of mount pad, make the fish tape in the perform be vertical setting, guarantee the fish tape in the perform at the center of heating furnace, realized the concentricity purpose between quick adjustment optical fiber perform and the high temperature heating furnace, improved the production efficiency of optical fiber wire drawing technology, guarantee optical fiber wire drawing quality.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a collimation adjustment device for an optical fiber drawing tower according to the present invention;

FIG. 2 is a schematic view of the base bottom and support block of FIG. 1;

FIG. 3 is a schematic view of the structure of the wand of FIG. 1;

FIG. 4 is a schematic view of the body of FIG. 1 from another perspective;

FIG. 5 is a schematic structural view of the cover of FIG. 1;

fig. 6 is a schematic view of the cover of fig. 1 from another perspective.

In the figure: the device comprises a preform rod 1, a rod body 11, a first through hole 11a, an annular abutting part 11b, a cover body 12, a boss 12a, a second through hole 12b, a groove 12c, an annular sealing ring 12d, an installation base 2, a second threaded hole 2a, a die holder 3, a base 4, an adjusting mechanism 5, a fixed base 51, a first threaded hole 51a, a first screw rod 52, a knob 53, a horizontal adjusting mechanism 6, a handle 61, a supporting block 7, a rotating shaft 8 and an installation hole 9.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described below with reference to the accompanying drawings.

Referring to fig. 1 to 6, an embodiment of the present invention provides a collimation adjustment device for an optical fiber drawing tower, including a preform 1, a mounting base 2, a die holder 3, a base 4, an adjusting mechanism 5, and a horizontal adjusting mechanism 6.

Prefabricated excellent 1 is followed from top to bottom to extending, the center run through be equipped with the coaxial perforation of prefabricated excellent 1, the perforation is used for supplying the fish tape to pass, and prefabricated excellent 1's material is the bar copper. Specifically, the preform 1 includes a rod 11 and a cover 12, please refer to fig. 3 and 4, the rod 11 is in a cylindrical configuration with a closed upper end and an open lower end, and the upper end of the rod 11 is provided with a first through hole 11 a. Referring to fig. 5 and 6, a convex boss 12a is protruded upward at the middle of the cover 12, the cover 12 covers the lower end of the rod 11, a second through hole 12b is formed at a position of the cover 12 opposite to the first through hole 11a, the fishing line is passed through the first through hole 11a, pulled out from the lower end of the rod 11, and then passed through the second through hole 12b, and the cover 12 covers the rod 11, so that the fishing line can be installed in the preform 1. Furthermore, one end of the boss 12a facing the rod 11 is provided with a groove 12c with an upward notch, and the groove 12c is arranged in an inverted cone shape, so that a fishing line can be conveniently inserted into the second through hole 12 b.

Boss 12a lateral wall is equipped with the annular groove, install ring 12d in the annular groove, ring 12d with preform 1 interference fit, 11 lower extreme inside walls of barred body are the step-like setting and form annular retaining part 11b, annular retaining part 11b with boss 12a offsets. Due to the friction between the ring-shaped sealing ring 12d and the rod 11, the cover 12 can be fixed on the rod 11, and the cover 12 is prevented from falling off.

Prefabricated excellent 1 demountable installation in

installation base

2, 2 movable mounting of installation base in on the die holder 3, 3 movable mounting of die holder in on the base 4, adjustment mechanism 5 is used for adjusting the die holder 3 is in position on the base 4, so that 1 lower extreme of prefabricated excellent is relative with the heating furnace, and horizontal adjustment mechanism 6 is used for adjusting installation base 2, so that fish tape in prefabricated excellent 1 is vertical setting.

Specifically, the mounting base 2, the die holder 3 and the relative position in base 4 middle part all run through and are equipped with along the mounting hole 9 of extending from top to bottom, prefabricated bar 1 install in the

mounting hole

9, 4 lower surfaces of base rotate and install supporting shoe 7, are connected through pivot 8 between supporting shoe 7 and the base 4, supporting shoe 7 rotate to when mounting hole 9 below, with prefabricated bar 1 offsets for supporting prefabricated bar 1, through rotating supporting shoe 7, can install prefabricated bar 1 in mounting hole 9, the installation and the dismantlement of prefabricated bar 1 of being convenient for.

The adjusting mechanism 5 comprises four adjusting components, the four adjusting components are arranged around the die holder 3 at equal intervals, and each adjusting component comprises a fixed seat 51, a first screw rod 52 and a knob 53. The fixing seat 51 is fixedly connected with the base 4, a first threaded hole 51a horizontally arranged is formed in the fixing seat 51 in a penetrating mode, one end of the first screw rod 52 is fixedly connected with the knob 53, and the other end of the first screw rod penetrates through the first threaded hole 51a and is used for abutting against the die holder 3. The knob 53 is held to rotate the first lead screw 52, so that the first lead screw 52 can be adjusted to move in the direction close to and far from the die holder 3, the die holder 3 is pushed to move, and through the four adjusting assemblies, the die holder 3 can be pushed according to the position of the heating furnace, and the fish line in the prefabricated rod 1 is opposite to the center of the heating furnace.

The 3 upper surfaces of die holder are equipped with the recess more than three, the recess is in 2 circumference intervals of mount pad set up, horizontal adjustment mechanism 6 includes a plurality of adjustment subassemblies, and is a plurality of adjustment subassembly and a plurality of recess one-to-one sets up, the adjustment subassembly includes second lead screw and handle 61, run through on the mount pad 2 and be equipped with a plurality of second screw holes 2a that extend from top to bottom along, it is a plurality of second screw holes 2a with the recess one-to-one sets up, the second lead screw install in second screw hole 2a, the lower extreme is located in the recess, upper end fixedly connected with handle 61. The handle 61 is held to rotate the second screw rod, and the length of the lower end of the second screw rod extending out of the second threaded hole 2a can be adjusted, so that the height of the mounting seat 2 can be adjusted. In this embodiment, the adjustment subassembly is equipped with four 2 circumference intervals of mount pad set up, through adjusting the length that four second lead screw lower extremes stretched out second screw hole 2a, adjustable mount pad 2's incline direction and inclination make fish tape in the prefabricated excellent 1 is vertical setting.

The fishing line penetrates into the rod body 11 from the first through hole 11a, is inserted into the inverted cone-shaped groove 12c, penetrates out of the second through hole 12b, covers the cover body 12 on the rod body 11, then installs the preform rod 1 in the installation hole 9, rotates the supporting block 7 to enable the supporting block 7 to support the preform rod 1, and then fixes the preform rod 1 in the installation hole 9. By rotating the first lead screw 52 by holding the knob 53, the first lead screw 52 is adjusted to move in a direction approaching and separating from the die holder 3, thereby pushing the die holder 3 to move, and pushing the die holder 3 according to the position of the heating furnace, so that the fishing line in the preform 1 is opposite to the center of the heating furnace. Rotate the second lead screw through holding handle 61, adjustable second lead screw lower extreme stretches out the length of second screw hole 2a, adjusts the incline direction and the inclination of mount pad 2, makes fish tape in prefabricated excellent 1 is vertical setting, guarantees the fish tape in prefabricated excellent 1 at the center of heating furnace, has realized the concentricity purpose between quick adjustment optical fiber perform 1 and the high temperature heating furnace, has improved the production efficiency of optical fiber wire drawing technology, guarantees optical fiber wire drawing quality.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

The features of the embodiments and embodiments described herein above may be combined with each other without conflict.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. An alignment adjustment device for an optical fiber drawing tower, comprising:

the mounting seat is detachably mounted on the prefabricated rod;

the mounting seat is movably mounted on the die holder;

the die holder is movably arranged on the base;

2. The apparatus for adjusting alignment of an optical fiber drawing tower according to claim 1, wherein the preform comprises a rod and a cap, the rod is disposed in a cylindrical shape with a closed top end and an open bottom end, the rod has a first through hole at the top end, a boss is protruded at the middle of the cap, the cap covers the bottom end of the rod, and a second through hole is disposed at a position of the cap opposite to the first through hole.

3. The optical fiber drawing tower collimation adjusting device as recited in claim 2, wherein a groove with an upward notch is formed at one end of the boss facing the rod body, and the groove is arranged in an inverted cone shape.

4. The fiber drawing tower collimation adjusting device as recited in claim 2, wherein an annular groove is formed on an outer side wall of the boss, and an annular sealing ring is installed in the annular groove and is in interference fit with the preform rod.

5. The apparatus of claim 2, wherein the inner sidewall of the lower end of the rod is stepped to form an annular stop, and the annular stop abuts against the boss.

6. The apparatus of claim 1, wherein the mounting base, the mold base and the base are provided with mounting holes extending in an up-down direction at opposite positions, the preform is mounted in the mounting holes, the base is rotatably mounted with a support block on a lower surface thereof, and the support block abuts against the preform when rotated below the mounting holes for supporting the preform.

7. The fiber drawing tower collimation adjustment apparatus of claim 1, wherein the adjustment mechanism comprises four adjustment assemblies, the four adjustment assemblies being evenly spaced around the die holder, the adjustment assemblies comprising a fixed base, a first lead screw, and a knob;

8. The apparatus of claim 1, wherein the die holder has three or more grooves formed in an upper surface thereof, the grooves being circumferentially spaced about the mounting block;

9. The fiber drawing tower alignment adjustment fixture of claim 8, wherein there are four adjustment assemblies.