TW202315847A - Glass fiber manufacturing apparatus and glass fiber manufacturing method - Google Patents

Abstract

The present invention provides a glass fiber manufacturing apparatus and a glass fiber manufacturing method, capable of stably forming glass filaments. The glass fiber manufacturing apparatus 11 of the present invention includes a feeder 12 for circulating molten glass, and a bushing 13 disposed below the feeder 12 and having a plurality of nozzles for discharging the molten glass. The feeder 12 of the glass fiber manufacturing apparatus 11 has a bottom wall W1 and a pair of side walls W2 provided on both sides of the bottom wall W1. The bottom wall W1 of the feeder 12 is provided with an outflow part 15 for discharging the molten glass downward. The outflow part 15 of the bottom wall W1 has a refractory wall 16 and a flow passage 17 surrounded by the refractory wall. The refractory wall 16 of the outflow part 15 has a division part 16a for dividing the refractory wall 16 into a plurality of refractory members B in a plan view.

Description

Glass fiber manufacturing device, and glass fiber manufacturing method

The invention relates to a glass fiber manufacturing device and a glass fiber manufacturing method.

As described in Patent Document 1, glass fibers can be produced using a manufacturing device equipped with a feeder and a bushing, wherein the feeder flows molten glass, and the bushing is arranged below the feeder and has a hood for the molten glass to flow out. Multiple nozzles. In such a glass fiber manufacturing apparatus, a plurality of glass filaments can be formed by letting molten glass flow out from each nozzle of the bushing.

prior art literature patent documents Patent Document 1: Japanese Patent Laid-Open No. 2012-091954

The problem to be solved by the invention The feeder of the above-mentioned conventional glass fiber manufacturing apparatus has a bottom wall and a pair of side walls provided on both sides of the bottom wall. The bottom wall of the feeder is equipped with an outflow part which makes molten glass flow out downward. The outflow part has a refractory wall and a flow path surrounded by the refractory wall. When the refractory wall of such an outflow part comes into contact with molten glass and heats up, it may crack due to thermal expansion. Therefore, relatively small fragments generated by the rupture of the refractory wall of the outflow part flow into the bushing, so there is a risk that the molding of the glass filaments becomes unstable.

An object of the present invention is to provide a glass fiber manufacturing apparatus and a glass fiber manufacturing method capable of stably forming glass filaments.

means to solve problems A glass fiber manufacturing apparatus that solves the above-mentioned problems, comprising a feeder and a liner; the feeder flows molten glass; The nozzle; the feeder has a bottom wall and a pair of side walls provided on both sides of the bottom wall; the bottom wall of the feeder has an outflow portion that allows the molten glass to flow downward; the outflow portion has a refractory wall And the flow path surrounded by the said refractory wall; The said refractory wall has a division part which divides the said refractory wall into several refractory members in planar view. According to this configuration, when the refractory wall of the outflow portion thermally expands, thermal stress on the refractory wall of the outflow portion can be relieved by relative movement of a plurality of refractory members constituting the outflow portion. In this way, cracking of the refractory wall of the outflow portion can be suppressed.

As for the manufacturing apparatus of the said glass fiber, the peripheral part of the said refractory wall may be comprised from the several frame parts containing a linear part in planar view. According to this structure, a refractory wall can be comprised with the frame part of a simple shape, for example.

As for the manufacturing apparatus of the said glass fiber, at least one of the said several said frame part may have a pair of said division|segmentation part, and it adjoins so that it may approach so that it may approach inward in planar view. According to this configuration, when the refractory wall of the outflow part thermally expands, it is possible to suppress the relative movement of the refractory member between the pair of divided parts to the inside of the outflow part. In this way, for example, the problem of narrowing of the flow path of the outflow portion due to relative movement of the refractory member between the pair of divided portions can be avoided.

As for the manufacturing apparatus of the said glass fiber, at least one of the said several said frame parts may have a pair of said division|segmentation part which adjoins so that it may approach toward the lower side in a side view. According to this structure, when the refractory wall of an outflow part thermally expands, it can suppress that the refractory member between a pair of division|segmentation part moves below an outflow part relatively. In this way, it is possible to easily suppress the fall-off of the refractory member between the pair of divided parts.

In the above-mentioned glass fiber manufacturing apparatus, the shape of the pair of split parts may extend linearly, and the angle formed by the pair of split parts may be in the range of 5° to 90°. When the angle formed by the refractory wall is 5° or more in plan view, the refractory member can be further suppressed from moving relative to the inner side of the outflow portion. When the angle formed by the pair of division parts in a side view of the refractory wall is 5° or more, it is possible to further suppress the relative movement of the refractory member downward. When the angle formed by the pair of split portions in plan view and side view of the refractory wall is 90° or less, for example, processing of the refractory for forming the refractory wall can be facilitated.

As for the manufacturing apparatus of the said glass fiber, each of the said some frame part may have 1 or more said division parts. According to this configuration, thermal stress generated in the plurality of frame portions can be released in a balanced manner. In this way, cracking of the refractory wall of the outflow portion can be further suppressed.

As for the manufacturing apparatus of the said glass fiber, the said refractory member of the said refractory wall may contain a pair of 1st refractory member and the 2nd refractory member arrange|positioned between the said pair of 1st refractory member. According to this structure, thermal stress which arises in a refractory wall can be released easily. In this way, cracking of the refractory wall of the outflow portion can be further suppressed.

In the manufacturing apparatus of the said glass fiber, the upper surface of the said 2nd refractory member may protrude upward rather than the upper surface of a pair of said 1st refractory member. In this manner, for example, the thermal stress on the refractory wall can be relieved by relatively moving the second refractory member upward relative to the pair of first refractory members.

The manufacturing apparatus of the above-mentioned glass fiber may further include a downstream side channel part which supplies the said molten glass from the said feeder to the said bushing; A downstream flow path surrounded by a refractory wall; the downstream refractory wall has a downstream dividing portion that divides the downstream refractory wall into a plurality of downstream refractory members in plan view. According to this configuration, when the downstream refractory wall of the downstream flow path portion thermally expands, the downstream refractory wall of the downstream flow path portion can be released by relative movement of the plurality of downstream refractory members constituting the downstream flow path portion. of thermal stress. In this way, cracking of the downstream side refractory wall can be suppressed.

A glass fiber manufacturing method that solves the above-mentioned problems, comprising a forming step of forming a plurality of glass filaments using a glass fiber manufacturing device; the glass fiber manufacturing device includes a feeder and a bush; the feeder circulates molten glass; The above-mentioned bushing is arranged below the above-mentioned feeder, and has a plurality of nozzles for the above-mentioned molten glass to flow out; the above-mentioned feeder has a bottom wall and a pair of side walls arranged on both sides of the above-mentioned bottom wall; the above-mentioned feeder The bottom wall has an outflow portion that allows the molten glass to flow downward; the outflow portion has a refractory wall and a flow path surrounded by the refractory wall; a refractory component.

Invention effect According to the present invention, glass filaments can be stably formed.

One embodiment of a glass fiber manufacturing apparatus and a glass fiber manufacturing method will be described below with reference to the drawings. However, in the illustrations, a part of the configuration may be exaggerated or simplified for the convenience of explanation. Moreover, the dimension ratio about each part may differ from an actual thing.

As shown in FIGS. 1-3 , the manufacturing apparatus 11 of glass fibers is equipped with the feeder 12 which flows molten glass MG, and the bushing 13 arrange|positioned below the feeder 12. As shown in FIG. The manufacturing apparatus 11 of the glass fiber of this embodiment is further equipped with the downstream flow path part 14 which supplies molten glass MG from the feeder 12 to the liner 13.

＜Feeder 12＞ The feeder 12 of the manufacturing apparatus 11 of glass fiber supplies the molten glass MG produced by the glass melting furnace which is not shown in figure.

The feeder 12 has a bottom wall W1 and a pair of side walls W2 disposed on both sides of the bottom wall W1 . The feeder 12 may also have an upper wall W3 configured to close the upper opening. The feeder 12 flows molten glass MG along the Y-axis direction in the figure.

The feeder 12 is made of refractory walls. The refractories constituting the refractory wall include, for example, electroformed bricks, densely sintered bricks, and the like. Examples of electroformed bricks include zirconia-based electroformed bricks, alumina-based electroformed bricks, alumina-zirconia-based electroformed bricks, alumina-zirconia-silica-based electroformed bricks, and the like. Densified sintered bricks include dense zircon bricks, dense chrome bricks, and the like.

The bottom wall W1 of the feeder 12 is equipped with the outflow part 15 which flows out molten-glass MG downward. The outflow part 15 has a refractory wall 16 and a flow path 17 surrounded by the refractory wall 16 .

As shown in FIG. 4, the refractory wall 16 of the outflow part 15 is comprised from several frame parts F1. The peripheral portion of each frame portion F1 includes a linear portion in plan view. The refractory wall 16 of the outflow part 15 in this embodiment is a square shape, and has four frame parts F1.

The refractory wall 16 of the outflow part 15 has the division|segmentation part 16a which divides the refractory wall 16 into several refractory members B in planar view. In the refractory wall 16 of the outflow part 15 in this embodiment, each of the four frame parts F1 has one or more division part 16a. Specifically, each of the pair of frame portions F1 extending along the X-axis direction has one division portion 16a. Each of the pair of frame parts F1 extending along the Y-axis direction has three divided parts 16a.

The refractory members B of the refractory wall 16 in the outflow portion 15 include a pair of first refractory members B1 and two second refractory members B2 arranged between the pair of first refractory members B1. As shown in FIG.4 and FIG.5, each of a pair of frame part F1 extended along a Y-axis direction has two 2nd refractory members B2.

As shown in FIG. 4, two 2nd refractory members B2 are arrange|positioned between a pair of division|segmentation part 16a, and each is adjacent so that it may approach inward in planar view. The shape of the next pair of divided portions 16a in plan view is preferably a shape extending linearly. In a plan view, the angle θ1 formed by the linearly extending segmented portion 16 a is preferably within a range of not less than 5° and not more than 90°. Wherein, the shape of the next pair of split portions 16a in a plan view may also be a shape extending in a curved shape or a stepped shape. However, the division|segmentation part 16a between two adjacent 2nd refractory members B2 extends in parallel with X-axis.

As shown in FIG. 5, two 2nd refractory members B2 are arrange|positioned between a pair of division|segmentation part 16a, and each adjoins so that it may approach to the lower side in side view. The shape of the pair of divided portions 16 a in a side view is preferably a shape each extending linearly. In a side view, the angle θ2 formed by the pair of linearly extending divided portions 16a is preferably within a range of 5° to 90°. Wherein, the shape of the next pair of dividing parts 16a in side view may also be a shape extending in a curved shape or a stepped shape. However, the division|segmentation part 16a between two adjacent 2nd refractory members B2 extends in parallel with Z-axis.

The 1st refractory member B1 of the outflow part 15 of the feeder 12 is supported by the structure ST of the installation place of the manufacturing apparatus 11 of glass fiber. The 2nd refractory member B2 is supported by a pair of 1st refractory member B1. The flow path 17 of the outflow part 15 flows down molten glass MG along the Z-axis direction in drawing.

The molten glass MG supplied by the feeder 12 includes, for example, E glass (glass with an alkali content of 2% or less), D glass (low permittivity glass), AR glass (alkali-resistant glass), C glass (acid-resistant glass) ), M glass (high elastic modulus glass), S glass (high strength, high elastic modulus glass), T glass (high strength, high elastic modulus glass), H glass (high permittivity glass), NE glass (low permittivity glass). The density of glass is, for example, 2.0 to 3.0 g/cm ³ .

<Bushing 13> As shown in FIGS. 1-3, the bushing 13 of the manufacturing apparatus 11 of a glass fiber has some nozzle N from which molten glass MG flows out. Glass strands GF are formed by each nozzle N of the bushing 13 .

The bushing 13 is equipped with the bushing main body 13a which supplies molten glass MG, and the bottom plate 13b provided in the bottom part of the bushing main body 13a. The upper part of the liner main body 13 a has a supply port which supplies molten glass MG from the feeder 12 . As shown in FIG. 3 , the bushing 13 is supported by a support member S on a structure ST where the glass fiber manufacturing apparatus 11 is installed. However, the support member S is omitted in FIG. 1 .

The liner main body 13a may have a screen for preventing impurities from accumulating on the bottom plate 13b, a terminal for conducting electricity, or the like.

As shown in FIGS. 1 to 3 , a plurality of nozzles N are provided on the bottom plate 13b. The number of nozzle holes in the bush 13 is preferably within a range of 100 to 10,000. The shape of the nozzle hole in each nozzle N of the liner 13 includes, for example, a circular shape, a flat shape having a long diameter and a short diameter, and the like.

As for the material of the bush main body 13a, the bottom plate 13b, and the nozzle N, a noble metal or a noble metal alloy is mentioned, for example. The noble metal is gold, silver, platinum, palladium, rhodium, iridium, ruthenium or osmium. From the viewpoint of improving durability, the materials of the bushing main body 13a, the bottom plate 13b, and the nozzle N are preferably platinum or a platinum alloy. Platinum alloys include, for example, platinum-rhodium alloys.

<Downstream side channel part 14> As shown in FIGS. 1 to 3 , the downstream side flow path part 14 of the glass fiber manufacturing apparatus 11 has the downstream side refractory wall 18 and the downstream side flow path 19 surrounded by the downstream side refractory wall 18 .

The downstream side refractory wall 18 has the downstream side division|segmentation part 18a which divides the downstream side refractory wall 18 into several downstream side refractory members C in planar view. The downstream side refractory wall 18 can be comprised with a refractory material. The refractories constituting the downstream side refractory wall 18 include those exemplified in the description of the feeder 12 described above.

As shown in FIG. 6 , the downstream refractory wall 18 of the downstream flow path portion 14 is constituted by a plurality of frame portions F2. The peripheral portion of each frame portion F2 includes a linear portion in plan view. The downstream side refractory wall 18 of the downstream side flow path part 14 in this embodiment has a quadrangular shape, and has four frame parts F2. Each of the pair of frame parts F2 extending along the Y-axis direction has one downstream side division part 18a.

The downstream flow path 19 of the downstream flow path portion 14 communicates with the flow path 17 of the outflow portion 15 . The downstream side flow path 19 of the downstream side flow path part 14 flows down molten glass MG along the Z-axis direction in figure, and supplies molten glass MG to the bushing 13. Among them, the size of the flow channel 17 of the outflow part 15 in plan view is preferably the same as the size of the downstream side flow channel 19 of the downstream side flow channel part 14 in plan view.

＜Configuration other than the above＞ The manufacturing apparatus 11 of glass fiber is equipped with the applicator and the bundler which are not shown in figure. The applicator applies a liquid sizing agent to the plurality of glass filaments GF pulled out from the bushing 13 . The bundler bundles a plurality of glass filaments GF coated with a bundler. A glass strand is obtained by bundling a plurality of glass filaments GF by a bundler. The glass strands are wound up by a winding device to obtain a silk cake wound with the glass strands.

＜Manufacturing method of glass fiber＞ Next, the main functions of the glass fiber manufacturing method and the glass fiber manufacturing apparatus 11 will be described together.

The manufacturing method of glass fiber is equipped with the shaping|molding process which shapes glass fiber GF using the manufacturing apparatus 11 of glass fiber. In the forming step, molten glass MG is supplied from the feeder 12 to the bushing 13 . The flow path of the molten glass MG leading from the feeder 12 to the bushing 13 and the inside of the bushing main body 13 a of the bushing 13 are filled with the molten glass MG. In the forming step, the molten glass MG supplied through the bush 13 flows out from the nozzle N of the bush 13 to shape the glass filament GF.

The bottom wall W1 of the feeder 12 in the manufacturing apparatus 11 of glass fiber is provided with the outflow part 15, and it flows out molten-glass MG downward. The outflow part 15 has the refractory wall 16 and the flow path 17 surrounded by the refractory wall 16; The refractory wall 16 has the division|segmentation part 16a which divides the refractory wall 16 into several refractory members B in planar view. According to this configuration, when the refractory wall 16 of the outflow part 15 thermally expands, thermal stress on the refractory wall 16 of the outflow part 15 can be relieved by relative movement of the plurality of refractory members B constituting the outflow part 15 . In this way, cracking of the refractory wall 16 of the outflow portion 15 can be suppressed.

For example, as shown in FIG. 4 , in the outflow portion 15 of the feeder 12 in this embodiment, at least one of the frame portions F1 has a pair of divided portions 16 a adjacent to each other so as to approach the inner side in plan view. At this time, when the refractory wall 16 of the outflow part 15 thermally expands, the relative movement of the second refractory member B2 between the pair of divided parts 16a toward the inside of the outflow part 15 can be suppressed. In this way, for example, the problem of narrowing of the flow path 17 of the outflow part 15 due to the second refractory member B2 between the pair of divided parts 16a can be avoided. In the outflow part 15 of this embodiment, the side surface of the 2nd refractory member B2 located between a pair of 1st refractory member B1 may protrude laterally rather than the side surface of a pair of 1st refractory member B1.

For example, as shown in FIG. 5 , in the outflow portion 15 of the feeder 12 in this embodiment, at least one of the frame portions F1 has a pair of divided portions 16 a, which are adjacent to each other in a manner that is closer to the lower side in a side view. . At this time, when the refractory wall 16 of the outflow part 15 thermally expands, the relative movement of the second refractory member B2 between the pair of divided parts 16a to the lower side of the outflow part 15 can be suppressed. In this way, the fall-off of the 2nd refractory member B2 between a pair of division|segmentation part 16a can be suppressed easily. In the outflow part 15 of this embodiment, the upper surface of the 2nd refractory member B2 located between a pair of 1st refractory member B1 may protrude upward rather than the upper surface of a pair of 1st refractory member B1.

Glass strands can be obtained by bundling the glass filaments GF obtained in the above forming steps. Glass strands can be utilized as, for example, chopped strands cut to specific lengths. In addition, the glass strands can be utilized as abrasive fibers, rovings, yarns, mats, cloths, tapes, or fabrics, among others. Applications of the glass strands include, for example, vehicle applications, electronic material applications, building material applications, civil engineering applications, aircraft-related applications, shipbuilding applications, logistics applications, industrial machinery applications, and daily necessities applications.

＜Function and Effect＞ Next, the operation and effect of the embodiment will be described.

(1) The manufacturing apparatus 11 of glass fiber is equipped with the feeder 12 and the bushing 13, wherein the feeder 12 circulates the molten glass MG; multiple nozzles N. The feeder 12 of the manufacturing apparatus 11 of glass fiber has the bottom wall W1 and a pair of side walls W2 provided in the both sides of the bottom wall W1. The bottom wall W1 of the feeder 12 is equipped with the outflow part 15 which flows out molten-glass MG downward. The outflow portion 15 of the feeder 12 has a refractory wall 16 and a flow path 17 surrounded by the refractory wall 16 . The refractory wall 16 of the outflow part 15 has the division|segmentation part 16a which divides the refractory wall 16 into several refractory members B in planar view.

According to this configuration, when the refractory wall 16 of the outflow part 15 thermally expands, thermal stress on the refractory wall 16 of the outflow part 15 can be relieved by relative movement of the plurality of refractory members B constituting the outflow part 15 . In this way, cracking of the refractory wall 16 of the outflow portion 15 can be suppressed. Therefore, the glass filament GF can be stably formed.

(2) The refractory wall 16 of the outflow part 15 in the manufacturing apparatus 11 of glass fiber is comprised by several frame parts F1 including the linear part in planar view, and the peripheral part. In this case, the refractory wall 16 can be comprised by the frame part F1 of simple shape, for example.

(3) Both of the frame parts F1 of the refractory wall 16 of the outflow part 15 in the manufacturing apparatus 11 of glass fiber have a pair of division part 16a, and are adjacent so that it may approach inward in planar view. In this case, for example, the problem of narrowing of the flow path 17 of the outflow part 15 due to the second refractory member B2 between the pair of divided parts 16a can be avoided as described above.

(4) Both of the frame parts F1 of the refractory wall 16 of the outflow part 15 in the manufacturing apparatus 11 of glass fiber have a pair of division part 16a, and it adjoins so that it may approach to the lower side in side view. In this case, drop-off of the 2nd refractory member B2 between a pair of division|segmentation part 16a can be suppressed easily as mentioned above. Therefore, since the support part which supports the 2nd refractory member B2 between a pair of division parts 16a can be omitted, for example, the structure of the feeder 12 can be simplified further.

(5) In the glass fiber manufacturing apparatus 11 , it is preferable that the shape of the pair of split parts 16a is a shape extending linearly, and the angles θ1 and θ2 formed by the pair of split parts 16a are 5° to 90°. within range. When the angle θ1 formed by the pair of divided portions 16a in plan view of the refractory wall 16 is 5° or more, the relative movement of the second refractory member B2 to the inside of the outflow portion 15 can be further suppressed. When the angle θ2 formed by the pair of divided portions 16a in a side view of the refractory wall 16 is 5° or more, it is possible to further suppress the relative movement of the second refractory member B2 downward. When the angles θ1 and θ2 formed by the pair of split portions 16a in plan view and side view of the refractory wall 16 are 90° or less, processing of the refractory for forming the refractory wall 16 can be facilitated.

(6) In the refractory wall 16 of the outflow part 15 in the manufacturing apparatus 11 of glass fiber, each of the four frame parts F1 has one or more division part 16a. In this case, the thermal stress generated in the four frame portions F1 can be released in a balanced manner. In this way, it is possible to further suppress the occurrence of cracks in the refractory wall 16 of the outflow portion 15 . Therefore, the glass filament GF can be molded more stably.

(7) The refractory member B of the refractory wall 16 in the manufacturing apparatus 11 of glass fiber contains a pair of 1st refractory member B1, and the 2nd refractory member B2 arrange|positioned between a pair of 1st refractory member B1. At this time, the thermal stress generated in the refractory wall 16 can be easily relieved. In this way, it is possible to further suppress the occurrence of cracks in the refractory wall 16 of the outflow portion 15 . Therefore, the glass filament GF can be molded more stably.

(8) The upper surface of the 2nd refractory member B2 of the manufacturing apparatus 11 of glass fiber protrudes upward rather than the upper surface of a pair of 1st refractory member B1. In this way, for example, the thermal stress of the refractory wall 16 can be relieved by moving the second refractory member B2 upward relative to the pair of first refractory members B1.

(9) The manufacturing apparatus 11 of glass fiber further includes the downstream flow path part 14 which supplies molten glass MG from the feeder 12 to the liner 13 . The downstream flow path portion 14 has a downstream refractory wall 18 and a downstream flow path 19 surrounded by the downstream refractory wall 18 . The downstream side refractory wall 18 has the downstream side division|segmentation part 18a which divides the downstream side refractory wall 18 into several downstream side refractory members C in planar view. At this time, when the downstream side refractory wall 18 of the downstream side flow path portion 14 thermally expands, the relative movement of the plurality of downstream side refractory members C constituting the downstream side flow path portion 14 can release the tension of the downstream side flow path portion 14. Thermal stress of the downstream side refractory wall 18 . In this way, cracking of the downstream side refractory wall 18 can be suppressed. Therefore, the glass filament GF can be molded more stably.

(Modification example) The above-mentioned embodiment can also be modified and implemented in the following manner. The above-described embodiment and the following modified examples can be implemented in combination with each other within a range that is not technically contradictory.

- In the outflow part 15 of the manufacturing apparatus 11 of glass fiber, the thickness dimension of the 2nd refractory member B2 may be the same as the thickness dimension of a pair of 1st refractory member B1, and may differ. For example, you may make the thickness dimension of 2nd refractory member B2 smaller than the thickness dimension of a pair of 1st refractory member B1. At this time, the upper surfaces of the pair of first refractory members B1 may protrude upward than the upper surfaces of the second refractory members B2, or may be arranged on the same plane as the upper surfaces of the second refractory members B2.

- In the manufacturing apparatus 11 of glass fiber, the number of refractory members B which comprise the refractory wall 16 of the outflow part 15 may be 9 or more, and may be plural numbers of 7 or less. For example, as shown in FIG. 7, the refractory wall 16 of the outflow part 15 may be comprised with two refractory members B. As shown in FIG.

・For example, as shown in FIG. 7, the division|segmentation part 16a may be provided in one frame part F1 among the frame parts F1 of the refractory wall 16 of the outflow part 15.

・The frame part F1 in the refractory wall 16 of the outflow part 15 has a pair of division|segmentation part 16a, and it adjoins so that it may approach inwardly in planar view, and may adjoin so that it may approach downward in side view. In this way, the extending direction of a pair of adjacent division|segmentation part 16a can also be changed suitably. For example, the frame part F1 in the refractory wall 16 of the outflow part 15 may have a pair of division|segmentation part extended in parallel in planar view or a side view.

- The refractory wall 16 of the outflow part 15 does not need to be comprised by the said some frame part F1, For example, you may comprise with a cylindrical part.

- In the refractory wall 16 of the outflow part 15, the number of frame part F1 may be 3, for example, and may be 5 or more. Even in such a refractory wall 16, it is still preferable that each of the plurality of frame parts F1 has one or more divided parts 16a. In this way, the operations and effects described in the above column (6) can be obtained.

・The downstream side refractory wall 18 of the manufacturing apparatus 11 of glass fiber can also be changed like the refractory wall 16 of the said outflow part 15. For example, although the downstream side refractory wall 18 is divided into two downstream side refractory members C, it may be divided into three or more downstream side refractory members C. At this time, like the refractory wall 16 of the outflow part 15, each of several frame parts F2 may have one or more downstream side division parts 18a.

- The glass fiber manufacturing apparatus 11 may have a structure in which a plurality of downstream flow path sections 14 are stacked and arranged.

・The downstream side channel part 14 of the manufacturing apparatus 11 of glass fiber can also be omitted. For example, the bushing 13 can also be connected to the outflow part 15 of the feeder 12 of the manufacturing apparatus 11 of glass fibers. In addition, the outflow part 15 of the feeder 12 of the manufacturing apparatus 11 of glass fiber, and the bushing 13 may be connected through the flow path member other than the downstream side flow path part 14.

・In the glass fiber manufacturing apparatus 11 of the above-mentioned embodiment, the outflow part 15 of the feeder 12 is arranged so that the longitudinal direction of the outflow part 15 is along the flow direction of the molten glass MG in the feeder 12 (shown in the figure). Y-axis direction), but not limited to this. For example, as shown in FIG. 8 , the outflow portion 15 of the feeder 12 in a plan view may also be configured such that the long side direction of the outflow portion 15 is along the direction perpendicular to the flow direction of the molten glass MG in the feeder 12 (in the figure, X-axis direction). According to the arrangement of the outflow part 15 like this, the direction in which the bushing 13 and the downstream flow path part 14 are arranged can be changed.

11: Glass fiber manufacturing equipment 12: Feeder 13: Bushing 14: Downstream flow path 15: outflow part 16: Refractory wall 16a: Division 17: flow path 18: Downstream refractory wall 18a: downstream side division part 19: Downstream flow path B: Refractory components B1: The first refractory component B2: The second refractory component C: Refractory components on the downstream side F1, F2: Frame GF: glass wool MG: molten glass N: Nozzle W1: bottom wall W2: side wall θ1, θ2: Angle

FIG. 1 is an exploded perspective view showing a glass fiber manufacturing apparatus in an embodiment. Fig. 2 is a cross-sectional view showing a glass fiber manufacturing apparatus. Fig. 3 is a cross-sectional view showing a glass fiber manufacturing apparatus. Fig. 4 is a plan view showing an outflow portion of the feeder. Fig. 5 is a side view showing an outflow portion of the feeder. Fig. 6 is a plan view showing a downstream flow path portion. Fig. 7 is a plan view showing an outflow portion of a feeder according to a modified example. Fig. 8 is an exploded perspective view showing a glass fiber manufacturing apparatus according to a modified example.

11: Glass fiber manufacturing equipment

12: Feeder

13: Bushing

15: outflow part

16: Refractory wall

16a: Division

17: flow path

B: Refractory components

W1: bottom wall

W2: side wall

Claims (10)

A glass fiber manufacturing device comprising a feeder and a bushing, The above-mentioned feeder circulates the molten glass, The above-mentioned bushing is arranged below the above-mentioned feeder, and has a plurality of nozzles through which the above-mentioned molten glass flows out, The feeder has a bottom wall and a pair of side walls arranged on both sides of the bottom wall, The said bottom wall of the said feeder is provided with the outflow part which makes the said molten glass flow out downward, The outflow part has a refractory wall and a flow path surrounded by the refractory wall, The said refractory wall has a division|segmentation part which divides the said refractory wall into several refractory members in planar view. The manufacturing device of glass fiber as claimed in item 1, wherein The peripheral edge part of the said refractory wall is comprised from the several frame parts containing a linear part in planar view. The manufacturing device of glass fiber as claimed in item 2, wherein At least one of the plurality of the frame portions has a pair of the division portions adjacent to each other so as to approach toward the inner side in plan view. The glass fiber manufacturing device as described in claim 2 or claim 3, wherein At least one of the plurality of the frame portions has a pair of the division portions adjacent to each other so as to approach toward the lower side in a side view. The manufacturing device of glass fiber as claimed in item 3, wherein The shape of the above-mentioned pair of divided parts is a shape that each extends linearly, An angle formed by the pair of divided portions is within a range of 5° to 90°. The glass fiber manufacturing device as described in any one of claim 2, claim 3 and claim 5, wherein Each of the plurality of the frame portions has one or more of the division portions. The glass fiber manufacturing device according to any one of claim 1 to claim 3 and claim 5, wherein The said refractory member of the said refractory wall contains a pair of 1st refractory member and the 2nd refractory member arrange|positioned between the said pair of 1st refractory member. The manufacturing device of glass fiber as claimed in item 7, wherein The upper surface of the said 2nd refractory member protrudes upward rather than the upper surface of a pair of said 1st refractory member. The glass fiber manufacturing device according to any one of claim 1 to claim 3 and claim 5, wherein Furthermore, a downstream side flow path part which supplies the said molten glass from the said feeder to the said bushing is provided, The downstream side channel part has a downstream side refractory wall and a downstream side channel surrounded by the downstream side refractory wall, The said downstream side refractory wall has a downstream side division|segmentation part which divide|segments the said downstream side refractory wall into several downstream side refractory members in planar view. A method for producing glass fibers comprising a forming step of forming a plurality of glass fibers using a glass fiber producing device, The manufacturing apparatus of the said glass fiber is equipped with a feeder and a bushing, The above-mentioned feeder circulates the molten glass, The above-mentioned bushing is arranged below the above-mentioned feeder, and has a plurality of nozzles through which the above-mentioned molten glass flows out, The feeder has a bottom wall and a pair of side walls arranged on both sides of the bottom wall, The said bottom wall of the said feeder is provided with the outflow part which makes the said molten glass flow out downward, The outflow part has a refractory wall and a flow path surrounded by the refractory wall, The said refractory wall has a division|segmentation part which divides the said refractory wall into several refractory members in planar view.

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