JPS6158843A - Manufacturing apparatus of fiber having metallic coating - Google Patents

Abstract

PURPOSE:To prevent the unevenness from generating in the coated quantity by providing a fiber guiding member in the position between the nozzles for coating of melted metal and a winder. CONSTITUTION:The melted glass 12 incorporated in a pot 10 is flowed down through the nozzles 14, stretched by a drum 18, extended to the fine fiber and wound on the drum 18. On the way, the melted metal is coated on the fine fiber in the inside of a melted metal holding furnace 20. On the running way, the deviation of the yarn is caused but the deviation is prevented from transferring to the part contacting with the melted metal by means of a fiber guiding member 30 and the contacting state between the running glass fiber 16 and the melted metal is always specified and thereby the coated quantity is made uniform.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an apparatus for producing tIA fibers having a metal coating, and in particular, to prevent unevenness in the amount of metal coating and occurrence of yarn breakage, and perform good spinning. This invention relates to an apparatus for manufacturing fibers having an improved metal coating.

[Prior Art] Metal coated fibers, especially aluminum (hereinafter abbreviated as aluminum) coated glass ta! fl [is that woven fabric is a radio wave i! ! ! Due to its properties of shielding and reflecting radio waves, its use is expanding in the field of radio communications.

As shown in FIGS. 2(a) and 2(b), an apparatus for producing such a metal-coated glass fiber is a molten glass 12.
(2) When the glass fiber 16 is pulled out from the nozzle 14 provided at the bottom of the aluminum furnace 10 and wound onto the rotating drum 18 of the winding device installed below, the nozzle 24 covered in the side opening 22 of the aluminum holding furnace 20 is used. Molten aluminum 28 at the tip of
It is known that the molten aluminum is swollen like a tongue, and running glass fibers are coated by passing the molten aluminum that swells like a tongue (Japanese Patent Publication No. 36-258
In Figure 1, 26 is a heater, and 40 is a spray nozzle for spraying water onto the drum 18 and attaching the tip of the glass fiber to the drum 18.

In order to produce metal-coated m-fibers using such an apparatus, the tip of the glass 16 that has flowed down from the spinning nozzle 14 is wound around the rotating drum 18 of a winder, and the glass is wound and spun.

By the way, during the spinning process, the glass fibers are connected and wound around the surface of the drum 18, so that 11!
New glass fibers are now wound on top of the i-layer, but this already wrapped fiber! Since the surface of the lk layer has slight irregularities, the running fibers also run with slight sway. Furthermore, if the rotational speed of the drum is uneven, the running fibers may sway.

Furthermore, when manufacturing glass fiber cloth by a spinning method called the rolling method, the drum is reciprocated in its axial direction and wound while being twilled during spinning as described above. Therefore, the fibers are forced to oscillate.

In this way, the glass fibers drawn out from the spinning nozzle do not always travel on exactly the same course, or due to the mechanical [& (lateral movement) of the drum, or due to the surface of the glass fibers wound around the drum. Due to the unevenness of the road, the vehicle is constantly rocking and oscillating (hereinafter referred to as "shaking") as it travels.

[Problems to be solved by the invention] In conventional devices, the aluminum bulges of the running glass fibers are caused by the swinging of the glass fibers caused by the lateral movement of the winding drum or uneven rotation of the winding drum. Contact form rE1
(e.g., contact pressure, contact length, etc.) and the accompanying change in the shape of the aluminum bulge, the amount of coating on the glass fibers becomes uneven, and the properties of the aluminum-coated fibers produced change. The disadvantage was that it was heterogeneous.

In addition, the amount of aluminum coating may be uneven,
If the amount of coating increases significantly, the strength of the aluminum coated glass will decrease due to the difference in thermal expansion coefficient between glass fiber and aluminum, corrosion of the glass fiber surface by aluminum, etc., and the glass fiber will break (thread breakage). It is more likely to occur. It is also believed that thread breakage occurs when the glass fibers traveling due to the swinging of the glass fibers come into contact with the metal coating nozzle.

For this reason, in conventional devices.

Breakage of the running glass fibers and variations in the quality of the manufactured m-fibers were likely to occur.

c. Means for Solving Problems] In order to solve the above-mentioned conventional problems, the apparatus for producing fibers having a metal coating according to the present invention has a structure in which the fibers are placed between the coating nozzle and the winding device. A guide member is provided with a groove that guides the vehicle so that it always travels at a predetermined position.

[Function] The fiber guide member provided between the bulge of molten metal and the winding device transmits the fiber yarn wobbling caused by lateral movement or uneven rotation of the first winding drum to the part in contact with the molten metal. If you do this, you will be hit by the defense.

As a result, the state of contact between the glass fiber and the molten metal is always constant, and unevenness in the amount of metal coating and thread breakage caused by thread wobbling are reliably prevented.

[Example] Examples will be described below with reference to the drawings.

FIG. 1(a) is a front view of a manufacturing apparatus for fibers having a metal coating according to an embodiment of the present invention, and FIG.
Figure (a) is a sectional view taken along line I-I.

10 is a pot for melting glass 12, and a spinning nozzle 14 for flowing out the molten glass is provided at the bottom of the pot. In this embodiment, a plurality of nozzles 14 are provided so as to be arranged along the - straight line H.

Below this box) 10 is a glass m hanging from the nozzle.
A winding device having a rotating drum 18 for winding the fiber 16 and a drive device (not shown) for rotating the drum 18 is installed, and a glass J[1i16 A molten metal holding furnace 20 for coating is installed.

This molten metal holding furnace 20 is provided with an opening 22 on its side surface, and a coating nozzle 24 is installed so as to cover the IjlJ opening. In the figure, 26 is a heater, 28 is a molten metal, and 40 is for spraying water onto the drum 18 to attach the tip of the glass Ml fiber to the drum 18. This is a spray nozzle.

A traveling glass iJ is located between the coating nozzle 24 and the winding device (drum 18 in the illustrated embodiment).
A fiber guide member 30 is provided with grooves 32 for guiding the fibers 1 and 16. The groove 32 provided in this TA fiber guide member 30 is
It is engraved according to the arrangement interval of.

In the apparatus for producing fibers having a metal coating configured in this manner, the molten glass 12 in the pot 10 flows down from the nozzle 14 and is pulled and stretched by the drum 18 into thin I fibers. It is wound up. During this process, the fiber is coated with molten metal to form a metal-coated glass fiber. While the thread runs, the fiber guide member 30 prevents this vibration from being transmitted to the contact area with the molten metal, ensuring that the contact between the traveling glass fiber and the molten metal is always constant. Therefore, uneven coating amount of molten metal and thread breakage are reliably prevented.

Next, the fiber guide member 30 will be explained in detail.

The ta fiber guide member 30 has a groove 32 carved with glass. @ L6 can be passed through the glass fiber/male thread as long as it can prevent the vibration from being transmitted to the metal bulge, and there are no particular restrictions on its at, shape, etc.
As shown in FIG.
Since the guide member 30 is rotated in accordance with the traveling direction of the glass mfa 16, the amount of friction is uniform in the circumferential direction. It is preferable to do so.

Note that as the amount of metal-coated glass fibers wound around the drum 18 increases and the sum of the diameter of the drum 18 and the thickness of the wound fiber layer increases, the running position of the glass fibers changes such that the running glass fibers melt. It moves in the direction away from the metal bulge.

For this reason, at least one of the drum 18ggI guide member 30 and the molten metal and metal holding furnace 20 is made movable in this separating direction, and one of these is moved in accordance with the movement of the traveling position of I) Nt. It is preferable to move the fibers so that the state of contact between the fibers and the molten metal remains constant at all times.

In the present invention, the material of the fiber guide member 30 is as follows:
There are no particular limitations as long as the material has low friction with glass fibers, but graphite, hexagonal boron nitride, natural or synthetic rubber, etc., which have extremely low sticking resistance, are preferable.

The shape of 11% 1 carved into the fiber guide member 30 is not particularly limited, but it is easy to insert the glass FjI1mt into the groove at the start of spinning, and it can easily fall out of the groove during spinning. , and further) 117 in which the running position of the glass m fibers is difficult to change.A specific example of the shape of the groove is shown in Figure 4 (which corresponds to the enlarged part of the part marked ■ in Figure 3).
Among these shown in a) to (C), the one shown in FIG. In view of the above-mentioned conditions, it is most preferable to use a groove that guides the fibers. FIG. 32c is shown.

The embodiments described above relate to spinning glass m fibers, but the present invention is based on glass m! ta other than I! It can also be applied when coating l with metal.

[Effects of the invention] As detailed above, the jJX manufacturing equipment for producing the metal coating according to the invention has a fiber guide member located between the molten metal coating nozzle and the winding device. Since the fiber wobbling due to lateral movement or uneven rotation of the winding drum is hardly transmitted to the contact area with the molten metal, the contact state between the glass fiber and the molten metal is constant, and there is no unevenness in the coating of the molten metal. will no longer occur.

In addition, a decrease in the strength of the jam due to an excessive coating amount of molten metal and yarn breakage during spinning due to this are prevented. Furthermore, it is also possible to reliably prevent fibers from coming into contact with the molten metal coating nozzle and breaking due to yarn wobbling.

Therefore, according to the apparatus of the present invention, high-quality fibers with uniform metal coating amount can be manufactured with high productivity without yarn breakage, and the cost of the product can be reduced.

Furthermore, the present invention is easy to implement because the configuration of the present invention can be achieved by simply making improvements to the conventional device.
Excellent practicality.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a manufacturing apparatus for TI1 fibers having a metal coating according to an embodiment of the present invention, FIG. 1(a) is a front view thereof, and FIG. It is a sectional view along the II line. FIG. 2 is a diagram showing a conventional manufacturing apparatus for fibers having a metal coating, and FIG.
It is a sectional view along ■-■. FIG. 3 is a perspective view showing a part of the fiber guide member, and FIGS. 4(a) to (C) are partially enlarged views of FIG. 3 (2). 10...Pot, 14...Spinning nozzle. 16... Glass fiber, 18... 1 winding ram, 20... Molten metal holding furnace. 24... Nozzle for metal coating, 30...
...FjN male guide member, 32...groove. Agent Patent Attorney Tsuyoshi Shigeno Figure 1 (a) (b) Figure 2 (a) (b) ■ ・ Figure 3 ■

Claims (5)

[Claims] (1) A pot equipped with a nozzle that discharges a substance to be made into fibers, a winding device that applies a stretching force to the substance discharged from the nozzle and winds it as fiber, and a space between the pot and the winding device. A molten metal holding furnace is installed at a position between the coating nozzle and the winding device, and is equipped with a coating nozzle that forms a bulge of molten metal at its tip through which the running fiber passes. 1. An apparatus for manufacturing fibers having a metal coating, comprising: a fiber guide member installed at a position and having a groove for guiding running fibers. (2) The apparatus for manufacturing fibers having a metal coating according to claim 1, wherein the fiber guide member is roll-shaped, and the groove is provided on the circumferential surface of the roll-shaped guide member. (3) At least one of the fiber guide member, the winding device, and the molten metal holding furnace is movable in a direction in which the traveling fiber approaches and separates from the molten metal bulge. Or an apparatus for producing fibers having a metal coating according to item 2. (4) The fiber guide member is made of graphite, hexagonal boron nitride, or natural or synthetic rubber. Fiber manufacturing equipment. (5) The groove provided in the fiber guide member has a V-shaped cross section, and a narrow groove is further carved in the deepest part of the groove. 1
An apparatus for manufacturing a fiber having a metal coating as described in 2.