WO2019223255A1 - Rod hanging apparatus and optical fiber drawing system - Google Patents

Abstract

A rod hanging apparatus, comprising a tower, a rod hanging station being provided thereon; multiple rod hanging parts, arranged on the tower; and rod-hanging platforms, arranged on the tower and configured for fixing an optical fiber preform rod, multiple such platforms being provided, and being arranged with one-to-one correspondence on the rod hanging parts. The rod hanging platforms on the rod hanging parts are all able to move or rotate to the rod hanging station, and multiple rod hanging platforms move or rotate alternately to the rod hanging station.

Description

Hanging rod device and fiber drawing production system

This application claims priority from a Chinese patent application with a filing date of May 21, 2018, application number 201810489461.8, and name "Hanging Rod Device and Optical Fiber Wire Drawing Production System", the entire contents of which are incorporated herein by reference. .

Technical field

The present disclosure relates to the technical field of quartz fiber manufacturing, for example, a hanging rod device and a fiber drawing production system.

Background technique

With the introduction of fiber-to-the-home and 5G concepts, more and more optical fibers are used, and the current market is in short supply. As a result, domestic optical fiber manufacturers have increased their production by expanding production or increasing speed. In addition, in the production process, it is also an effective method to continuously improve the optical fiber production process, optimize the equipment structure, and improve production efficiency.

The hanging rod device is set to hang optical fiber preforms. The hanging rod device mainly includes a tower and a hanging rod platform. The hanging rod device in the related technology is equipped with a hanging rod platform. The light rod drawing must be performed in sequence when changing production. The following steps: 1) cooling the drawing furnace; 2) removing the preform from the drawing furnace and unloading the rod; 3) placing the new preform into the drawing furnace; 4) heating the drawing furnace to the normal drawing temperature. The duration of the whole process is about 3h, which is a great waste for production efficiency.

Summary of the Invention

The present disclosure provides a hanging rod device with the capability of buffering preforms. Instead of the hanging rod device in the related art, it can realize the smooth switching of preforms without the temperature of the wire drawing furnace being reduced, and the entire production time is shortened, which can greatly reduce Improve fiber drawing production efficiency.

An embodiment provides a hanging rod device, comprising: a tower, the tower is provided with a hanging rod station; a plurality of hanging rod portions, the hanging rod portions are provided on the tower; The hanging rod platform on the tower, the hanging rod platform is provided as a fixed optical fiber preform, a plurality of the hanging rod platforms are provided, and the hanging rod platforms are provided on the hanging rod part one to one correspondingly; Each of the hanging rod platforms on the hanging rod portion can be moved or rotated to the hanging rod station, and multiple hanging rod platforms are alternately moved or rotated to the hanging rod station.

An embodiment also provides an optical fiber drawing production line, including a drawing furnace and the rod hanging device described above, the rod hanging station is disposed directly above the drawing furnace mouth, and the optical fiber preform is disposed to be After being positioned at the hanging rod station, it is sent into or drawn out of the drawing furnace.

BRIEF DESCRIPTION OF THE DRAWINGS

1 is a schematic structural diagram of a hanging rod device according to an embodiment;

2 is a schematic plan view of a first structure of a hanging rod device according to an embodiment;

3 is a schematic plan view of the second structure of the hanging rod device according to an embodiment;

4 is a schematic diagram of a power mechanism of a second structure of a hanging rod device in an embodiment;

5 is a schematic structural diagram of an optical fiber drawing production system in an embodiment;

FIG. 6 is a connection diagram of a PLC controller of an optical fiber drawing production system in an embodiment.

Among them: 2-tower, 4-hanging rod platform, 5-hanging rod station, 6-optical fiber preform, 8-first hanging rod portion, 10-second hanging rod portion, 16-third hanging rod portion, 18-drawing furnace, 20-fire-resistant cover, 22-air-sealing mechanism, 23-linear slide rail, 24-rotating table, 241-fixing part, 242-rotating part, 25-servo motor, 26-lead screw mechanism.

Detailed ways

Example one

As shown in FIG. 1 to FIG. 2, this embodiment discloses a hanging rod device, which includes a tower 2 and a hanging rod platform 4. The hanging rod platform 4 is configured to fix an optical fiber preform 6, and the tower 2 is provided with The hanging rod station 5 is provided with two hanging rod portions on the tower 2. The two hanging rod portions are a first hanging rod portion 8 and a second hanging rod portion 10 respectively. The first hanging rod portion 8 is provided on the hanging rod. On the first side of the work station 5, the second hanging rod part 10 is disposed on the second side of the hanging rod station 5. The above hanging rod platform 4 is provided with at least two, and is provided on the first hanging rod part 8 and the second On the hanging rod part 10, the hanging rod device further includes two rotary tables 24, the two hanging rod sections are arranged one-to-one corresponding to the rotating table 24, and the two hanging rod sections are respectively fixed on the corresponding rotating table 24, and the above rotation The stands 24 are all arranged on the tower 2. The rotating table 24 drives the hanging rod part to rotate, so that the hanging rod platform 4 is rotated to the hanging rod station. The two rotating tables 24 move independently, so that the hanging rod platforms 4 on the two hanging rod portions alternately rotate to the hanging rod station 5.

In one embodiment, the rotating table 24 includes a fixing portion 241 and a rotating portion 242. The fixing portion 241 is fixed on the tower 2, the rotating portion 242 is fixed on the rotating table 24, and the rotating portion 242 can rotate relative to the fixed portion 241.

The above structure of the hanging rod device has the ability to buffer the optical fiber preform 6 and replaces the hanging rod device in the related technology, so that when the optical fiber drawing production line, the preform 6 currently being drawn is hung and positioned at the hanging rod The hanging rod platform 4 in position 5 is in the wire drawing mode; and the hanging rod platform 4 on the other hanging rod part is unloaded and then re-installed the rod to enter the rod changing mode. The two optical fiber preforms 6 enter the drawing mode and the rod changing mode alternately, which can greatly shorten the rod changing time of the preform, and make continuous production of the fiber drawing possible.

As shown in FIG. 1, FIG. 3, and FIG. 4, another structure of the hanging rod device is as follows: The tower 2 is provided with three hanging rod portions, and the three hanging rod portions are the first hanging rods. The hanging rod station 5 is provided on the first hanging rod portion 8, the second hanging rod portion 10 and the third hanging rod portion 16, and the second hanging rod portion 10 is provided on the first hanging rod portion 8. On one side, the third hanging rod portion 16 is provided on the second side of the first hanging rod portion 8; at least two hanging rod platforms 4 are provided, and the hanging rod platform 4 is provided on the second hanging rod portion 10 and the third The hanging rod platform 4 on the second hanging rod portion 10 can be moved to the hanging rod station 5, and the hanging rod platform 4 on the third hanging rod portion 16 can be moved to the hanging rod station 5. The hanging rod platforms 4 on the second hanging rod portion 10 and the third hanging rod portion 16 are alternately moved to the hanging rod station 5. In an embodiment, the first hanging rod portion 8, the second hanging rod portion 10, and the third hanging rod portion 16 are provided with a through linear slide rail 23, and the hanging rod platform 4 is provided on the hanging rod portion. Driven by a lead screw mechanism 26 driven by a servo motor 25 as a power source, it can move along a linear slide rail 23. In this embodiment, the first hanging rod portion 8, the second hanging rod portion 10, and the third hanging rod portion 16 can be rotated relative to the tower 2. For a specific rotation method, refer to the rotation method of the rotating table 24. The hanging rod part is first rotated and then moved on the linear slide rail 23, so as to reach the hanging rod station 5 through movement.

In the first structure, the rotating method is used to change the position of the hanging rod platform. In the second structure, the moving method is used to change the position of the hanging rod platform. The process is the same as the first structure, and is not repeated here.

Example two

As shown in FIG. 5 and FIG. 6, this embodiment discloses an optical fiber drawing production system, which includes a drawing furnace 18, the hanging rod device described in the first embodiment, and a PLC controller. The above-mentioned hanging rod station 5 is provided at the drawing Directly above the furnace mouth of the furnace 18, the above-mentioned optical fiber preform 6 is positioned at the hanging rod station 5 and is then fed into or drawn from the drawing furnace 18. The drawing furnace 18 is provided with a refractory cover 20 configured to open or close the furnace mouth. After the optical fiber preform 6 is pulled out of the drawing furnace 18, the refractory cover 20 is covered. The drawing furnace 18 is provided with an air-sealing mechanism 22 near the mouth of the furnace, and an inert gas is input into the drawing furnace 18 through the air-sealing mechanism 22. The above-mentioned air seal mechanism 22 has two working modes, which are a wire drawing production mode and a wire changing mode. The PLC controller is connected to and controls the air-sealing mechanism 22, the rotary table 24, and the servo motor 25.

The fiber exchange and production process of the optical fiber wire drawing production system with the above structure is as follows:

When the optical fiber is normally drawn: The optical fiber preform 6 hanging on the hanging rod station 5 is sent into the drawing furnace 18 for normal optical fiber drawing operation. At this time, the air-sealing mechanism 22 enters the drawing production under the control of the PLC controller. Mode, input inert gas into the drawing furnace 18 to ensure the normal and smooth progress of fiber drawing.

When the current fiber preform 6 needs to be changed after the wire drawing is completed: the air-sealing mechanism 22 enters the wire changing mode in advance, and enters into the drawing furnace the inert gas in the wire changing mode (such as argon), the inert gas in the wire changing mode, and the production mode The only difference between the inert gas inputs is the inert gas input. The inert gas input in the line change mode is greater than the inert gas input in the production mode. Subsequently, the optical fiber preform 6 is pulled out from the drawing furnace 18, and the optical fiber preform is pulled out. Quickly cover the refractory cover 20 to isolate the furnace environment of the drawing furnace 18 from the outside world. Closing the refractory cover 20 can prevent the mouth of the drawing furnace 18 from oxidizing and protect the drawing furnace. The optical fiber preform 6 in the production mode is moved or rotated to leave the hanging rod station 5, and the optical fiber preform in the rod changing mode is moved or rotated to the hanging rod station 5. Then, the refractory cover 20 is opened again and the The optical fiber preform 6 after the rod is sent into the drawing furnace 18 to complete a wire replacement.

In one embodiment, each time the refractory cover 20 is opened, the air-sealing mechanism 22 enters the wire-changing mode in advance to ensure that the wire-changing is performed smoothly while protecting the wire drawing furnace 18.

Based on this, instead of the hanging rod device in the related technology, the hanging rod device with the ability to buffer the preform rod can be used to smoothly switch the preform rod without the temperature of the wire drawing furnace being reduced, and the entire production time is shortened from 3 hours to 0.5. It can greatly improve the production efficiency of fiber drawing.

Claims (10)

1. A hanging rod device includes:

   A tower, which is provided with a hanging rod station;

   A plurality of hanging rod sections, which are arranged on the tower;

   A hanging rod platform provided on the tower, the hanging rod platform is provided as a fixed optical fiber preform, a plurality of the hanging rod platforms are provided, and the hanging rod platforms are correspondingly arranged on the hanging rod part one by one. on;

   Wherein, the hanging rod platform on the hanging rod portion can be moved or rotated to the hanging rod station, and a plurality of the hanging rod platforms are arranged to be alternately moved or rotated to the hanging rod station. .
2. The hanging rod device according to claim 1, wherein the tower is provided with two hanging rod portions, and the hanging rod device further comprises a rotating table, and the hanging rod portions are arranged one-to-one corresponding to the rotating table, and The hanging rod part is fixed on the rotating table, and the rotating tables are all arranged on the tower. The rotating table is configured to drive the hanging rod part to rotate, so that the hanging rod platform rotates to the rotating table. At the stick station.
3. The hanging rod device according to claim 1, wherein the tower is provided with three hanging rod portions, and the three hanging rod portions include a first hanging rod portion, a second hanging rod portion, and a third hanging rod portion. The hanging rod station is provided on the first hanging rod portion, the second hanging rod portion is provided on the first side of the first hanging rod portion, and the third hanging rod portion is provided on the first hanging rod portion. Second side; at least two hanging rod platforms, two of the hanging rod platforms are provided on the second hanging rod portion and the third hanging rod portion; The hanging rod platform can be moved to the hanging rod station, and the hanging rod platform on the third hanging rod portion can be moved to the hanging rod station; the hanging rod platform of the second hanging rod portion The hanging rod platform on the third hanging rod portion is arranged to alternately move to the hanging rod station.
4. The hanging rod device according to claim 3, further comprising a power mechanism and a linear slide, and the first hanging rod portion, the second hanging rod portion, and the third hanging rod portion are all provided with a through hole. The linear slide rail is configured to be able to move along the linear slide rail on the hanging rod portion under the driving of the power mechanism.
5. The hanging rod device according to claim 4, wherein the power mechanism includes a servo motor and a screw mechanism, and the servo motor is configured to drive the screw mechanism.
6. An optical fiber drawing production line, comprising a drawing furnace and the rod hanging device according to any one of claims 1 to 5, wherein the rod hanging station is disposed directly above the mouth of the drawing furnace, and the optical fiber preform rod is disposed After being positioned at the hanging rod station, it is sent into the drawing furnace or pulled out from the drawing furnace.
7. The fiber-optic wire drawing production line according to claim 6, wherein the wire drawing furnace includes a furnace mouth and a fireproof cover, the fireproof cover is provided on the wire drawing furnace, and the fireproof cover is set to open or cover the fireproof cover. A furnace mouth, so that after the optical fiber preform is pulled out from the drawing furnace, the refractory cover covers the furnace mouth.
8. The fiber-optic wire drawing production line according to claim 6, further comprising an air-sealing mechanism provided on the wire-drawing furnace near the mouth of the furnace, and the air-sealing mechanism is configured to input into the wire-drawing furnace. Inert gas.
9. The fiber drawing production line according to claim 8, wherein the air-sealing mechanism includes two working modes, and the two working modes are a drawing production mode and a wire exchange mode, respectively.
10. The fiber-optic wire drawing production line according to claim 8, further comprising a PLC controller, wherein the PLC controller controls and connects the air-sealing mechanism, the rotary table, and the servo motor.

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