JPH1024349A - Submerged spinning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the level of a cooling liquid layer to be sufficiently stabilized even if a rotary water tank is large-sized and rotated at high speed, in manufacturing a fine metallic wire by jetting molten metal into the cooled liquid layer inside the rotary water tank and quickly cooling the molten metal. SOLUTION: In a submerged spinning device 1 for forming a fine metallic wire by cooling molten metal jetted from a nozzle; the rotary water tank 7 rotated at high speed, with cooling water W stored inside, by a rotary driving mechanism 9 is constituted of pneumatic bearings 5 provided with a cylindrical outer ring 5k connected to the tank 7, inner ring 5a arranged inside this outer ring 5k, and an air compressor 5r for feeding compressed air between these two rings 5a, 5k.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a submerged spinning apparatus for continuously producing fine wires from molten metal.

[0002]

2. Description of the Related Art A submerged spinning apparatus designed to continuously produce a fine metal wire having a stable wire diameter is configured to rotate a cylindrical rotary water tank at high speed around a horizontal axis while simultaneously rotating an inner peripheral wall of the rotary water tank. A cooling liquid layer is formed by centrifugal force, and the molten metal is jetted toward the cooling liquid layer from a nozzle arranged in the cavity inside the cooling liquid layer, and the molten metal is rapidly cooled in the cooling liquid It is conventionally well known that a thin metal wire is obtained by the above method.

[0003] An early one of the above-described submerged spinning apparatuses is disclosed in, for example, Japanese Patent Application Laid-Open No. 55-64948, in which one end of a cylindrical rotating water tank in the horizontal axis direction is opened and the other end is opened. Is closed, and a pivot shaft protruding from the center of the closed end is supported by a ball bearing in a cantilever manner. However, in the submerged spinning device using this one-end open type rotary water tank, insertion of a nozzle for molten metal injection into the rotary water tank and removal of the thin metal wire cooled by the cooling liquid layer from the rotary water tank, Since both must be performed from one end of the rotating water tank, after manufacturing a certain amount of metal fine wire, retract the nozzle from the inside of the rotating water tank to the outside, then take out the metal thin wire from inside the rotating water tank, There is a problem that a so-called batch process must be performed, and it is not possible to manufacture a long metal wire by a continuous operation. In the submerged spinning apparatus using a rotating water tank that is open at one end, a cantilever method is used in which the pivot at the closed end of the rotating water tank is supported by a ball bearing. In addition to this, there is a problem in that the structure is lacking in structural strength and it is difficult to stably rotate the rotating water tank at high speed.

Therefore, for example, Japanese Patent Application Laid-Open No. 60-76255 describes
JP-A-60-96349, JP-A-60-16661
No. 47 and Japanese Patent Publication No. 6-59519, both ends of the rotating water tank in the horizontal axis direction are opened, and a nozzle for spraying molten metal is opened from one end of the rotating water tank. A submerged spinning device has been proposed, which is configured to be inserted into a rotating water bath and to take out the thin metal wire cooled by the cooling liquid layer from the other end to the outside of the rotating water bath. In a submerged spinning apparatus capable of continuously producing these thin metal wires, the outer peripheral surface of the rotary water tank near both ends in the horizontal axis direction is supported by a pair of ball bearings, so that the rotary water tank is rotated around the horizontal axis. To be able to rotate.

In the above-described submerged spinning apparatus using a rotating water tank with open ends, continuous processing is possible, so that a long metal wire can be obtained, and the rotating water tank has a cantilever. Instead of being distributed at two locations at both ends in the horizontal axis direction of the rotating water tank, and because the bearing object is the outer peripheral surface portion of the rotating water tank having a larger diameter than the pivot, the strength as the pivot is also improved. This is superior to the conventional submerged spinning device that performs batch processing using an open-end rotating water tank in that it can withstand high-speed rotation and secure sufficient structural strength. It can be said that.

In the submerged spinning apparatus, when the liquid surface of the cooling liquid layer in the rotating water tank is disturbed, the molten metal jet-sprayed is deformed by the disturbance, and the fine metal wire having a stable wire diameter is produced. Therefore, how to stabilize the liquid level of the cooling liquid layer is a key to improving the quality of the fine metal wire. However, in any of the above-described submerged spinning apparatuses using the open-ended or open-ended rotary water tanks, the rotary water tank is supported by ball bearings. When the size of the water tank is increased and the size of the ball bearing is also increased, the bearing diameter is inevitably larger than that of the small ball bearing, and the amplitude of the vibration generated with rotation increases by that much, which causes the rotation. The water tank is rattled greatly, and the liquid level of the cooling liquid layer is greatly disturbed.

[0007] Therefore, a configuration for suppressing the disturbance of the liquid level of the cooling liquid layer due to the vibration transmitted to the rotating water tank is disclosed in, for example, JP-A-60-152346, JP-A-1-306054, and JP-A-5-200500. The publications are disclosed in the respective publications. Of these, in Japanese Patent Application Laid-Open Nos. 60-152346 and 1-306054, a partition plate extending along the rotation direction is provided on the inner peripheral surface of the rotating water tank where the cooling liquid layer is formed. Japanese Patent Laid-Open No. 5-200500 discloses a configuration in which the width of the cooling liquid layer in the horizontal axis direction is reduced to suppress the degree of occurrence of disturbance of the liquid surface due to vibration. A vibration wave suppressing member formed by inserting a coil or a jam wire smaller in diameter than the spiral coil inside the helical coil is disposed on the inner peripheral surface portion of the rotating water tank where the cooling liquid layer is formed. There is disclosed a configuration in which a wave generated by disturbance of the liquid level is canceled by the vibration wave suppressing member.

[0008]

However, all of the above three conventional arrangements suppress the once-disturbed liquid surface of the cooling liquid layer, which causes the liquid surface to be disturbed. Since it does not eliminate the vibration of the ball bearing, it is not possible to completely eliminate the turbulence of the liquid level.Therefore, it is very difficult to improve the production efficiency of fine metal wires by increasing the size of the rotating water tank and the ball bearing. Have difficulty. In addition, if the size of the ball bearing is increased due to the increase in the size of the rotating water tank, the bearing diameter in the ball bearing will inevitably increase, but if it does so, one of the high-speed rotation of the larger rotating water tank will be abandoned. Inevitably, after all, the problem of efficiently producing fine metal wires with high wire diameter accuracy remains unsolved even now, and even if the rotating water tank is enlarged, the liquid level of the cooling liquid layer will be sufficient. It has been desired to provide a configuration in which the rotating water tank can be rotated at a high speed in a stabilized state.

The present invention has been made in view of the above circumstances,
An object of the present invention is to produce a thin metal wire by jet-jetting molten metal to a cooling liquid layer in a rotating water tank to rapidly cool the liquid layer. Even when the rotating water tank is enlarged and rotated at high speed, the liquid level of the cooling liquid layer is increased. Is to provide a submerged spinning device that can sufficiently stabilize the spinning.

[0010]

According to a first aspect of the present invention, there is provided a submerged spinning apparatus which rotates around a horizontal axis and has at least one end opened in the axial direction of the horizontal axis. A cooling liquid layer is formed on the inner peripheral surface of the cylindrical rotating water tank by centrifugal force, and molten metal is ejected from an inner portion of the cooling liquid layer in the radial direction of the rotating water tank toward the inner peripheral surface of the rotating water tank. In the submerged spinning apparatus for producing a fine metal wire by cooling and solidifying the ejected molten metal in the cooling liquid layer, a bearing for rotatably supporting the rotating water tank around the horizontal axis is provided. It is characterized by comprising a hydrostatic bearing that does not directly contact the rotating water tank side.

Further, in the submerged spinning apparatus according to the present invention, the hydrostatic bearing preferably includes an annular outer ring, and an inner ring disposed inside the outer ring and having an outer diameter smaller than the inner diameter of the outer ring. And a fluid supply source for ejecting a compressed fluid between the inner ring and the outer ring, and one of the outer ring and the inner ring is disposed in the rotating water tank in the axial direction of the horizontal axis. The compressed fluid supplied by the fluid supply source, between the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring, an annular ring that separates the outer ring and the inner ring from each other. A fluid layer was formed. Further, in the submerged spinning apparatus according to the present invention described in claim 3, the hydrostatic bearing is constituted by an air bearing that causes compressed air to be interposed between the hydrostatic bearing and the rotary water tank.

According to the submerged spinning apparatus of the present invention, the hydrostatic bearing that rotatably supports the rotary water tank around a horizontal axis is a static pressure bearing that does not directly contact the rotary water tank side. Therefore, even if the rotating water tank side vibrates relatively to the hydrostatic bearing side during rotation of the rotating water tank, this vibration is not transmitted to the hydrostatic bearing side, and therefore, the reaction force from the hydrostatic bearing side is reduced. The rotating water tank does not vibrate upon receiving. Therefore, even if the rotary water tank is enlarged and rotated at a high speed in order to improve the production efficiency, the rotary water tank can be stably rotated without being vibrated, whereby the cooling liquid formed in the rotary water tank can be formed. It is possible to efficiently obtain a fine metal wire with high wire diameter accuracy without generating a disturbance on the liquid level of the layer.

According to the submerged spinning apparatus of the present invention, the shaft of the rotary water tank by the hydrostatic bearing uses the outer ring and the inner ring to supply fluid between the outer ring and the inner ring. This is performed through the fluid layer formed by the compressed fluid supplied from the source, so when the rotating water tank vibrates relative to the hydrostatic bearing side during rotation of the rotating water tank, this vibration is generated by the fluid layer. The bearing is absorbed and buffered, and is calm.Besides, the bearing is made using the annular outer ring and inner ring, so the diameter of the bearing part is larger than that of supporting a solid shaft member, and the weight resistance And the vibration resistance increases. Accordingly, it is possible to more reliably prevent the occurrence of vibration of the rotating water tank due to the increase in size and the occurrence of disturbance in the liquid level of the cooling liquid layer, thereby further promoting the efficient production of fine metal wires with high wire diameter accuracy. Becomes possible.

Further, according to the submerged spinning apparatus of the present invention, the non-contact between the rotary water tank side and the hydrostatic bearing side is achieved by compressed air, so that the rotary water tank side with respect to the hydrostatic bearing is achieved. It is possible to further promote the efficient production of fine metal wires with high wire diameter accuracy by increasing the buffering degree at the time of the occurrence of vibration and preventing the occurrence of disturbance of the liquid level of the cooling liquid layer.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A submerged spinning apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view of a submerged spinning apparatus according to an embodiment of the present invention. The submerged spinning apparatus according to this embodiment, which is denoted by reference numeral 1 in FIG. 3, an air bearing 5 attached to 3, a rotating water tank 7 rotatably supported around a horizontal axis by the air bearing 5, a rotation driving mechanism 9 for rotating the rotating water tank 7 around the horizontal axis, and It has.

The base 3 has a vertically long columnar shape with a predetermined thickness, and one end 3a of the base 3 has a substantially cylindrical concave portion 3b.
Is formed at the other end 3c, and a columnar concave portion 3d having an inner diameter larger than the concave portion 3b is formed. The concave portions 3b, 3d are communicated with each other by a passage 3e having an inner diameter smaller than the concave portion 3b.

The air bearing 5 (corresponding to a hydrostatic bearing) is provided in the recess 3d of the base 3, and has an annular inner ring 5a and an annular ring provided outside the inner ring 5a. Outer ring 5
and an air compressor 5r (corresponding to a fluid supply source) for supplying compressed air between the outer ring 5k and the inner ring 5a.

The inner ring 5a has an outer diameter smaller than the inner diameter of the recess 3d and an inner diameter substantially the same as the inner diameter of the passage 3e. A V groove 5c is formed on the outer peripheral surface 5b of the inner ring 5a. A concave groove 5e is formed in the inner peripheral surface 5d of the inner ring 5a, and one end of the inner ring 5a is connected to the end on the concave portion 3d side by a bolt by the passage 3e. V
A plurality of locations at equal intervals in the circumferential direction of the inner ring 5a between the groove 5c and the concave groove 5e communicate with each other by air ejection holes 5f, and the concave groove 5e is formed into an annular closing plate 5g.
Is closed by

The inner ring 5 of the present embodiment formed as described above.
a is an annular air passage 5 communicating with the air ejection holes 5f inside the inner race 5a by the closing plate 5g and the concave groove 5e.
j is defined, and the inner peripheral surface of the closing plate 5g is located on the same plane as the inner peripheral surface 5d of the inner ring 5a.

The outer ring 5k has an outer diameter slightly smaller than the concave portion 3d of the base 3 and larger than the outer diameter of the inner ring 5a.
A substantially trapezoidal convex portion 5n corresponding to the V groove 5c of the inner ring 5a is protruded, and the V groove 5c of the inner ring 5a and the convex portion 5n of the outer ring 5k are arranged concentrically with the inner ring 5a. Is slightly separated over the entire circumferential direction of the inner ring 5a and the outer ring 5k, and the outer peripheral surface 5p of the outer ring 5k is slightly spaced from the inner peripheral surface of the concave portion 3d in the radial direction of the outer ring 5k and the concave portion 3d. It is configured to be arranged.

The air compressor 5r is mounted on the base 3
Compressed air from the air compressor 5r passes through the inside of the base 3 and the inner ring 5a and is connected to the air introduction hole 5h of the closing plate 5g.
s is supplied to the air passage 5j of the inner race 5a.

The rotary water tank 7 has a tank body 7a and a connecting member 7k for connecting the tank body 7a to the outer ring 5k.

The tank body 7a has a cylindrical shape, and has an outer diameter substantially equal to the outer diameter of the outer ring 5k and an inner diameter larger than the inner diameter of the inner ring 5a. The tank body 7a
The inner peripheral surface 7b (corresponding to the inner peripheral surface of the rotating water tank) has an end 7d (corresponding to the other end of the rotating water tank in the axial direction of the horizontal shaft) of the air bearing 5 side. A partition plate 7e is provided upright on the inner peripheral surface 7b near the rotary water tank in the axial direction of the horizontal axis. A flange 7g provided continuously on the outer peripheral edge of the partition plate 7e is connected to the tank body 7a. End 7 of
d, and an annular side wall 7h applied to the end 7d of the tank body 7a from outside the flange 7g, and applied to an end 7d of the tank body 7a from outside the side wall 7h. The tank body 7a is bolted together with the annular lid plate 7j.
Is connected to the end 7d.

The inner peripheral surface 7 of the tank body 7a is
A plurality of through-holes 7f are provided in the portion closer to b in the thickness direction at intervals in the circumferential direction of the tank body 7a, and the side wall 7h is substantially equal to the inner diameter of the inner ring 5a of the air bearing 5. The partition plate 7e is formed with an inner diameter slightly larger than the inner diameter of the side wall 7h.
Formed with an inner diameter larger than the inner diameter of the partition plate 7e;
The partition plate 7e, the side wall 7h, and the lid plate 7j are arranged concentrically with the tank body 7a.

The connecting member 7k has a substantially cylindrical shape, a large-diameter portion 7m connected to the end face on the side opposite to the base 3 by the outer ring 5k, and a large-diameter portion 7m connected to the large-diameter portion 7m. Body 7
a small diameter portion 7n connected to the end 7c on the side of the air bearing 5 at a. The small diameter portion 7n extends to the inner peripheral surface 7b near the end 7c of the tank body 7a, and has a small diameter. A watertight member 7p having an annular shape and having an inner diameter slightly larger than the inner diameter of the partition plate 7e is attached to the inner peripheral surface of the portion 7n. The connecting member 7k and the watertight member 7p are concentric with the tank body 7a. Are located.

The rotary water tank 7 thus formed is provided in a passage 7r defined in a tank body 7a between the side wall 7h and the partition plate 7e and opened to the center side of the tank body 7a.
When the cooling water W (corresponding to the cooling liquid) is supplied from the outside of the lid plate 7j through the partition plate 7e, the tank body 7a between the partition plate 7e and the watertight member 7p passes through the through hole 7f of the partition plate 7e. A passage 7t defined in a portion and opened to the center side of the tank body 7a
Water W flows into and is stored in the watertight member 7p
The cooling water W that has flowed over the large-diameter portion 7m side of the connecting member 7k over the connecting member 7k passes through drain holes 7v that are provided at a plurality of locations at equal intervals in the circumferential direction of the connecting member 7k.
Is configured to be discharged to the outside. The periphery of the connecting member 7k is covered with a cover 7w for preventing the cooling water W discharged outward from the drain hole 7v from scattering. A lower portion of the cover 7w is provided with a drain valve. 7x is attached.

The rotary drive mechanism 9 includes a belt 9a wound around an outer peripheral surface 5p of an outer ring 5k of the air bearing 5 and a pulley mounted with the belt 9a tensioned between the outer ring 5k and the belt 9a. (Not shown), and a motor (not shown) serving as a circulating drive source for the belt 9a with the pulley attached to an output shaft (not shown).

As is clear from the above description, the submerged spinning apparatus 1 according to the present embodiment is configured such that the submerged spinning device 1 passes through the end 7c of the rotary water tank 7 on the side of the base 3 on the opposite side of the rotary water tank 7. It is open in the horizontal direction up to the section 7d, and constitutes a submerged spinning apparatus using a rotating water tank that is open at both ends as a whole.

Further, the submerged spinning apparatus 1 of the present embodiment
Although not shown in FIG. 1, a crucible that melts a metal (including an alloy) as a material of a thin metal wire to be manufactured into a molten metal, or is inserted into the inside of the tank body 7a from outside the lid plate 7j. A nozzle for jetting the molten metal generated in the crucible downward in the vertical direction toward the cooling water W in the passage 7t, a nozzle moving mechanism for moving the nozzle in the axial direction of the rotary water tank 7 above the passage 7t, A winding device and the like are provided for collecting a thin metal wire generated by cooling the molten metal from the nozzle by the cooling water W in the passage 7t to the outside of the end 3a of the base 3 from the passage 3e.

That is, the submerged spinning apparatus 1 comprises the above-described base 3, air bearing 5, rotary water tank 7, and rotary drive mechanism 9.
In addition, JP-A-60-76 mentioned in the description of the prior art
255, JP-A-60-96349, JP-A-60-1
No. 66147 and Japanese Patent Publication No. 6-59519, the various configurations required for the production of fine metal wires, which are provided in a submerged spinning apparatus using a rotating water tank with open both ends, are disclosed. Needless to say, it is prepared for.

Next, the operation (operation) of the submerged spinning apparatus 1 of the present embodiment configured as described above will be described.

In producing a thin metal wire, first,
Compressed air is supplied from an air compressor (not shown) to an air passage 5j of the inner race 5a via a pressure feeding hose 5s and an air introduction hole 5h, and a plurality of air ejection holes 5f communicating with the air passage 5j are used to supply V-grooves of the inner race 5a. 5c and convex portion 5n of outer ring 5k
And the compressed air is ejected between them. Then, the outer ring 5k is compressed by the air pressure of the compressed air ejected from the air ejection holes 5f.
Is radially separated from the inner ring 5a over the entire circumferential direction of the inner ring 5a and the outer ring 5k, and a compressed air layer (not shown) is formed between the V groove 5c of the inner ring 5a and the convex portion 5n of the outer ring 5k. The inner ring 5a and the outer ring 5k are formed concentrically in a non-contact state.

In this state, when the motor (not shown) of the rotation drive mechanism 9 is operated to drive the belt 9a to rotate, the rotation including the outer ring 5k around which the belt 9a is wound and the connecting member 7k connected thereto is performed. The whole of the aquarium 7 is united,
It rotates while being supported by the inner ring 5a and the compressed air layer around it. When the rotating water tank 7 rotates, the cooling water W supplied from the outside of the lid plate 7j to the passage 7r via the water supply pipe 7s, and further flows into the passage 7t through the through hole 7f of the partition plate 7e, is centrifuged. The water is stored at a water level lower than the height of the partition plate 7e over the entire circumference of these passages 7r and 7t.

Then, a part of the cooling water W stored in the passages 7r and 7t passes through the watertight member 7p and the connecting member 7k.
Out of the plurality of drain holes 7v of the connecting member 7k that are not closed by the belt 9a.
v, is discharged to the outside of the connecting member 7k by centrifugal force,
After flowing downward in the cover 7w, it is discharged from the valve 7x below the cover 7w.

While the rotary water tank 7 is being rotated as described above, molten metal from the crucible (not shown) is moved from a nozzle (not shown) moved in the axial direction of the rotary water tank 7 by a nozzle moving mechanism (not shown). When the jet metal is jetted and enters the cooling water W in the passage 7t located below the nozzle, the molten metal is rapidly cooled by the cooling water W, and the molten metal jet jetted from the nozzle with the rotation of the rotary water tank 7 is Rotating water tank 7
By continuously entering the passage 7t on the downstream side in the rotational direction of the nozzle, a thin metal wire having a wire diameter corresponding to the opening diameter of the nozzle is spirally formed in the passage 7t, and the spiral thin metal wire is not shown. End 7c of the rotary water tank 7
From the rotary tank 7 via the passage 3e of the base 3.

Then, a part of the cooling water W supplied from the water supply pipe 7s to the passages 7r and 7t passes through the watertight member 7p,
Finally, it is discharged from the valve 7x below the cover 7w,
By circulating the cooling water W such that the cooling water W is newly replenished from the water supply pipe 7s to the passages 7r and 7t, the temperature of the cooling water W is increased as the molten metal enters from the nozzle. As a result, the cooling effect of the molten metal is prevented from being impaired.

While such a series of operations is being performed,
Vibration due to rotational shake or the like is generated in a portion from the outer ring 5k that rotates by the operation of the rotation drive mechanism 9 to the rotating water tank 7, and the rotating water tank 7 and the outer ring 5k of the air bearing 5 connected thereto have their diameters increased. When it vibrates in the direction, the vibration of the outer ring 5k is absorbed and buffered by the elastic force generated by the air pressure of the compressed air layer between the V groove 5c of the inner ring 5a and the convex portion 5n of the outer ring 5k, and transmitted to the inner ring 5a. However, naturally, the reaction force of the vibration of the outer ring 5k does not occur on the inner ring 5a.

Further, since the inner ring 5a and the outer ring 5k constituting the air bearing 5 have a cylindrical shape having substantially the same outer diameter as the rotary water tank 7, the bearing is formed using a normal solid rotary shaft. As a result, the diameter of the rotating shaft is increased, and the weight resistance and vibration resistance in supporting the rotating water tank 7 are increased.

As described above, according to the submerged spinning device 1 of the present embodiment, the cooling water W of the submerged spinning device 1 that cools the molten metal jet-jetted from the nozzles to generate a fine metal wire is stored inside. The rotating water tank 7 that is rotated at a high speed by the rotation driving mechanism 9 in this state includes a cylindrical outer ring 5k connected to the rotating water tank 7, a cylindrical inner ring 5a disposed inside the outer ring 5k, An air bearing 5 having an air compressor for supplying compressed air between the inner ring 5a and the outer ring 5k was provided.

For this reason, even if vibrations due to rotational shake occur in the rotary water tank 7 and vibrate, the transmission of the vibration from the outer ring 5k to the inner ring 5a of the air bearing 5 connected to the rotary water tank 7 is performed by the outer ring 5k and the inner ring 5a. The vibration of the outer ring 5k is absorbed and buffered by the compressed air layer, and the transmission of the reaction force from the inner ring 5a to the outer ring 5k is also blocked by the compressed air layer. Thus, it is possible to reliably prevent the liquid surface of the cooling water W in the passages 7r and 7t of the rotary water tank 7 from being disturbed, to keep the liquid surface of the cooling water W stationary, and to jet water from the nozzle to jet water. Deformation of the molten metal is prevented, whereby a fine metal wire having a stable wire diameter can be obtained.

The rotating shaft constituting the air bearing may be a general solid rotating shaft. However, as in the submerged spinning apparatus 1 of this embodiment, the rotating shaft of the air bearing 5 is cylindrical. Outer ring 5
When k is configured, the diameter of the rotating shaft is increased to increase the weight resistance and the vibration resistance, whereby the inner ring 5a and the outer ring 5 described above are formed.
k, the vibration of the rotary water tank 7 can be generated even if only the end 7c of the rotary water tank 7 is cantilevered. This is advantageous in that the disturbance of the liquid level of the cooling water W in the passages 7r, 7t due to the above can be prevented more reliably, and a fine metal wire having a stable wire diameter can be reliably obtained.

Therefore, the base 3 and the air bearing 5 similar to the end 7c side are also provided on the end 7d side of the rotary water tank 7, so that the rotary water tank 7 is pivotally supported at both ends 7c and 7d. If, for example, the above-mentioned effects can be further obtained, in this case, a nozzle for jetting molten metal, a nozzle moving mechanism,
The thin metal wire winding device and the like can be extended inside the rotary water tank 7 through the inside of the inner ring 5a.

In the present embodiment, the air bearing 5 is used as the bearing of the rotary water tank 7. For example, the hydraulic oil from the hydraulic pump is pumped between the inner ring 5a and the outer ring 5k to pressurize the oil between them. A conventionally known so-called hydrostatic bearing in which the rotating shaft and its bearing member are in non-contact with each other, such as a hydraulic bearing that forms an oil layer, uses a bearing of any structure as the bearing of the rotating water tank 7. May be. Furthermore, in the present embodiment, the outer ring 5k is connected to the rotary water tank 7 side, and the inner ring 5a is connected to the base 3 side. However, the outer ring 5k is connected to the base 3 side, and the inner ring 5a is connected to the rotary water tank 7 side. It may be configured to be connected to the side.

In this embodiment, the end 7c of the rotary water tank 7 on the base 3 side is connected to the rotary water tank 7 through the passage 3e of the base 3.
The above description has been made with reference to an example of a submerged spinning apparatus using a rotary water tank having both ends open and open at the opposite end 7d. 7
It is needless to say that the present invention can also be applied to a so-called submerged spinning apparatus using a so-called one-end open type rotating water tank in which the end 7c on the side of the air bearing 5 is closed.

[0046]

As described above, according to the submerged spinning apparatus of the first aspect of the present invention, the cylindrical spinning apparatus rotates around the horizontal axis and has at least one end opened in the axial direction of the horizontal axis. On the inner peripheral surface of the rotating water tank, a cooling liquid layer is formed by centrifugal force, and molten metal is ejected from a portion inside the cooling liquid layer in the radial direction of the rotating water tank toward the inner peripheral surface of the rotating water tank, In a submerged spinning apparatus for manufacturing a fine metal wire by cooling and solidifying the ejected molten metal in the cooling liquid layer, a bearing for rotatably supporting the rotary water tank around the horizontal axis is provided on the rotary water tank side. And a hydrostatic bearing that does not directly contact the bearing.

For this reason, the hydrostatic bearing that rotatably supports the rotary water tank around the horizontal axis is a static pressure bearing that does not directly contact the rotary water tank side. Even if the rotating water tank side vibrates relatively,
This vibration is not transmitted to the hydrostatic bearing side, so that the rotary water tank does not vibrate due to the reaction force from the hydrostatic bearing side. Therefore, even if the rotary water tank is enlarged and rotated at a high speed in order to improve the production efficiency, the rotary water tank can be stably rotated without being vibrated, whereby the cooling liquid formed in the rotary water tank can be formed. It is possible to efficiently obtain a fine metal wire having high wire diameter accuracy without generating a disturbance on the liquid level of the layer.

According to the submerged spinning apparatus of the present invention, the hydrostatic bearing has an annular outer ring and an outer diameter smaller than the inner diameter of the outer ring, which is disposed inside the outer ring. An inner ring, and a fluid supply source for ejecting a fluid compressed between the inner ring and the outer ring, and one of the outer ring and the inner ring is provided by the rotating water tank with the horizontal shaft. The outer ring and the inner ring are separated from each other between the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring by the compressed fluid supplied by the fluid supply source and connected to the other end in the axial direction. The configuration was such that an annular fluid layer was formed.

For this reason, the pivoting of the rotating water tank by the hydrostatic bearing is performed by using the outer ring and the inner ring via a fluid layer formed between the outer ring and the inner ring by a compressed fluid supplied from a fluid supply source. When the rotating water tank side vibrates relatively to the hydrostatic bearing side during rotation of the rotating water tank,
Since this vibration is absorbed and buffered by the fluid layer and calms down, and because the bearing is carried out using the annular outer ring and inner ring, the diameter of the bearing portion is larger than that of supporting a solid shaft member. And increase the weight resistance and vibration resistance. Accordingly, it is possible to more reliably prevent the occurrence of vibration of the rotating water tank due to the increase in size and the occurrence of disturbance in the liquid level of the cooling liquid layer, thereby further promoting the efficient production of fine metal wires with high wire diameter accuracy. Can be.

Further, according to the submerged spinning apparatus of the present invention, since the hydrostatic bearing is constituted by an air bearing for interposing compressed air with the rotating water tank side,
By achieving non-contact between the rotating water tank side and the static pressure bearing side with compressed air, the degree of buffering of the rotating water tank side with respect to the static pressure bearing when vibration is generated is increased, and the occurrence of disturbance in the liquid level of the cooling liquid layer is prevented. Thus, efficient production of fine metal wires having high wire diameter accuracy can be further promoted.

[Brief description of the drawings]

FIG. 1 is a sectional view of a submerged spinning apparatus according to an embodiment of the present invention.

[Explanation of symbols]

Reference Signs List 1 Submerged spinning device 5 Air bearing (hydrostatic bearing) 5a Inner ring 5b Inner ring outer peripheral surface 5k Outer ring 5m Outer ring outer peripheral surface 5r Air compressor (fluid supply source) 7 Rotating water tank 7b Inner peripheral surface (inner peripheral surface of rotating water tank) 7c Tank Body end (the other end of the rotating water tank in the axial direction of the horizontal axis) 7d Tank body end (one end of the rotating water tank in the axial direction of the horizontal axis) W Cooling water (cooling liquid)

Claims (3)

[Claims] 1. A cooling liquid layer is formed by a centrifugal force on an inner peripheral surface of a cylindrical rotating water tank which is rotated around a horizontal axis and at least one end in the axial direction of the horizontal axis is opened. A liquid for ejecting a molten metal from a location inside the cooling liquid layer in the radial direction toward the inner peripheral surface of the rotary water tank, and cooling and solidifying the ejected molten metal in the cooling liquid layer to produce a thin metal wire. In the middle spinning device, a submerged spinning device characterized in that a bearing that rotatably supports the rotary water tank around the horizontal axis is a static pressure bearing that does not directly contact the rotary water tank side. 2. The static pressure bearing includes an annular outer ring, an inner ring disposed inside the outer ring and having an outer diameter smaller than the inner diameter of the outer ring, and a fluid compressed between the inner ring and the outer ring. A fluid supply source to be ejected, and one of the outer ring and the inner ring is connected to at least the other end in the axial direction of the horizontal axis in the rotating water tank, and the fluid supply source is The submerged spinning according to claim 1, wherein the compressed fluid to be supplied forms an annular fluid layer between the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring to separate the outer ring and the inner ring from each other. apparatus. 3. The submerged spinning device according to claim 1, wherein the hydrostatic bearing is an air bearing that causes compressed air to be interposed between the hydrostatic bearing and the rotating water tank.