KR200262782Y1 - Air duct for producing apparatus of optical fiber - Google Patents

Abstract

The present invention relates to an air duct of an optical fiber manufacturing apparatus, and further includes a damper having a vibration absorbing function at a connection portion between the main frame and the air duct to suppress transmission of vibration generated during blowing to the main frame. In order to improve the quality of optical fiber by increasing durability and suppressing vibration,

The air duct 30,

The main frame 40, the split frame 42 and the filter duct 33 is a portion which is further provided with a damper 34 made of a resin material excellent in shock absorption, including urethane for absorbing vibration.

Description

Air duct for producing apparatus of optical fiber

The present invention relates to the air duct of the optical fiber manufacturing apparatus, and more particularly to the improvement of the fastening structure of the air duct required for forced air breeze to cool the optical fiber and remove foreign substances.

In general, an optical fiber refers to a waveguide of a fiber-like object for the purpose of transmitting light, and although synthetic resins and glass are used as raw materials, most glass having excellent transparency is used.

The optical fiber has a core formed at the center thereof, and has a double cylindrical shape in which a clad is wrapped around the outer surface thereof, and an outer surface thereof is coated with a coating material to protect the core and the clad from external impact.

Since the diameter of the optical fiber reaches 100-hundreds of micrometers and the refractive index of the core portion is higher than the refractive index of the sadd portion, the light can be focused on the core portion and proceed without exiting well.

These optical fibers are free from interference or interference from external electromagnetic waves, are difficult to wire, small, lightweight, and flexible, and can accommodate many communication lines in one optical fiber. Widely used.

There are various methods of manufacturing such optical fiber, such as crucible, external deposition, internal deposition, axial deposition method, and radiation method, but by melting the preform with rods of about 1cm in diameter having the same structure as the optical fiber and stretching it with high heat. Many methods by radiation to obtain optical fiber are adopted.

Optical fiber manufacturing apparatus 1 by the radiation as described above, as shown in FIG.

A draw tower (11) constructed by combining a plurality of stages composed of a frame (10) to have a predetermined height on the ground and a base material feeding device (12) for supplying a base material thereon is provided. It consists of a furnace 13 for melting the base material supplied from the apparatus 12 and a spinning nozzle 14 for spinning the molten base material to a very fine diameter.

Below the radiation nozzle 14 is provided with a diameter measuring device for measuring the diameter of the optical fiber to be radiated, and to be cooled while passing through the draw tower 11 provided at a predetermined height below.

Below the draw tower 11, the coating machine 15 is configured to prevent degradation and abrasion of the radiated optical fiber and provide ease of winding.

The optical fiber manufacturing apparatus 1 is melted in the furnace 13 by injecting a base material, and is radiated to a minute diameter downward through the spinning nozzle 14, and the emitted optical fiber is cooled while passing through the draw tower 11. Then, the surface is coated via the coater 15 and the final winding is discharged to the winding roller (16).

As described above, the optical fiber radiated downward from the upper side is cooled as air forcedly blown through the air duct 20 mounted on the rear surface of the frame 10 via the draw tower 11,

The air duct 20 is provided with a blower fan-mounted main pipe 21 through the frame 10, as shown in Figure 2,

Both sides of the filter duct 22 for removing foreign substances in the air blown into the frame 10 were connected to each other to maintain a firm mounting state through fixing means such as bolts.

However, the air duct 20 mounted on the draw tower 11 generates vibrations due to fluid flow along with driving of the blower fan.

The vibration is transmitted to the frame 10 connected to the air duct 20 to weaken each component constituting the optical fiber manufacturing apparatus 1 or to act as a concentrated load on the weak part, thereby reducing the durability and optical fiber radiation due to vibration. It lowered the performance and caused the quality deterioration of the product.

Therefore, the present invention has been devised to solve the above problems, the main frame is further provided with a damper having a vibration absorbing function in the connection portion with the air duct to suppress the vibration generated during the blowing to the main frame manufacturing apparatus Its purpose is to improve fiber quality by increasing durability and suppressing vibration.

1 is a simplified front view showing a general optical fiber manufacturing apparatus,

Figure 2 is a simplified fragmentary plan view showing an air duct fastening structure of the optical fiber manufacturing apparatus applied to the prior art,

3 is a detailed view of portion A of FIG. 2;

Figure 4 is a simplified fragmentary plan view showing an air duct fastening structure of the optical fiber manufacturing apparatus of the present invention,

5 is a detailed view of portion B of FIG. 4;

* Description of the symbols used in the main parts of the drawings *

30; air duct

31; main pipe

32; extension

33; filter duct

34; damper

40; main frame

42; split frame

Hereinafter, the configuration and operation of the present invention will be described with reference to the accompanying drawings.

4 is a schematic fragmentary plan view showing an air duct fastening structure of the optical fiber manufacturing apparatus of the present invention, and FIG. 5 is described together with a detailed view of portion B of FIG. 4.

Air duct 30 of the present invention optical fiber manufacturing apparatus for achieving the above object, as shown in Figure 4,

A plurality of flat cross-sections are mounted on both sides of the rear surface of the optical fiber manufacturing apparatus forming a square,

The air duct 30 is interposed in the same direction as the flow of the main frame 40 and the blown air protruding from both sides of the optical fiber manufacturing apparatus, and interposed in the vertical direction and the fixed frame 41 for fixing the air duct 30 And it is fastened through fixing means, such as a bolt, on the split frame 42 which bisects the flat cross section of the whole optical fiber manufacturing apparatus.

Air duct 30 as described above,

The main pipe 31 containing the blower fan for inducing air flow through the forced air flow through the fixed frame 41,

Subsequently, the expansion unit 32 for blowing air generated through the blower fan to a large area and the filter duct 33 interposed in front of the expansion unit 32 to remove foreign matters during the blowing are divided into the main frame 40 and the divided frame. By connecting to (42), a firm fixing was achieved.

At the portion where the main frame 40, the split frame 42 and the filter duct 33 are in contact with each other, as shown in FIG. 5, a damper 34 for absorbing the vibration generated by the driving fan and the fluid flow is further added. I have it,

The damper 34 is formed through a material excellent in shock absorption, including urethane, so that the filter duct 33 and the main frame 40 and the split frame 42 are interposed over the entire surface.

The air duct 30 of the optical fiber manufacturing apparatus configured as described above drives the blower fan interposed in the main pipe 31 through which the fixed frame 41 is penetrated to forcibly blow air to the front in which the optical fiber is radiated.

The air forcedly blown by the blower fan expands the area through the expansion part 32 and forms a constant flow rate, and together with the cooling action of the optical fiber radiated through the filter duct 33 for removing foreign matters contained in the air. Simultaneously clean up the area radiated through the ambient air circulation.

Air duct 30 for forced air blowing for cooling of the optical fiber radiated in this way is a vibration phenomenon occurs in the rotation of the blower fan and the movement of air,

This vibration has a natural frequency throughout the optical fiber manufacturing apparatus, including the main frame 40 in contact with the air duct 30, and transmits, the continuous vibration weakens the fastening portion of each frame, or concentrate the load on the weak part It is a fatal inhibitor that causes durability deterioration.

By absorbing the vibration generated with the driving of the air duct 30 as described above through the damper 34 mounted on the junction of the main frame 40 and the split frame 42,

By eliminating the inhibitory factors on each component of the optical fiber manufacturing apparatus according to the vibration, it has the advantage of achieving durability.

The air duct of the optical fiber manufacturing apparatus of the present invention as described above further comprises a damper made of a material excellent in shock absorption between the air duct causing direct vibration and the various frames on which it is fixed,

It is a useful design to produce high quality optical fiber by enabling the increase of durability and uniform radiation of the optical fiber by eliminating the inhibitory elements on each component of the optical fiber manufacturing apparatus by vibration absorption.

Claims (2)

Interposed on both sides of the frame back of the optical fiber manufacturing apparatus, and through the fixing pipe 41, the main pipe 31 containing the blower fan to cool the emitted optical fiber, The expansion unit 32 for blowing the generated air in a large area and the filter duct 33 interposed in front of the expansion unit 32 to remove the foreign matter during the blowing is connected to the main frame 40 and the split frame 42. In constructing the attached air duct for the optical fiber manufacturing apparatus; The air duct 30, Air duct of the optical fiber manufacturing apparatus, characterized in that the main frame 40, the split frame 42 and the filter duct 33 is further provided with a damper 34 for absorbing vibration on the entire surface. The method of claim 1 The damper 34 is an air duct of the optical fiber manufacturing apparatus, characterized in that formed of a resin material such as urethane.