JPH0698470B2 - Fine wire winding method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for winding a fine wire obtained by a so-called rotary submerged spinning method.

[Prior Art] Conventionally, a method is known in which a metal or an alloy is melted and the molten material is jetted as a fine stream into a rotating cooling liquid to obtain a fine wire. Such a manufacturing method called the rotating submerged spinning method and an apparatus therefor are disclosed, for example, in Japanese Patent Laid-Open No. 55-64948.

FIG. 3 and FIG. 4 are a schematic front sectional view and a schematic vertical sectional view, respectively, for explaining the above-mentioned rotating submerged spinning method. With reference to these figures, here, a cooling liquid layer 2 is formed on the inner wall of the rotary drum 1 by centrifugal force. The cooling liquid layer 2
A molten material 4 such as a metal or an alloy is ejected from the nozzle 3 as a fine stream into the inside, and is solidified in the cooling liquid layer 2 to obtain a fine metal wire 5. In the figure, 7 indicates a crucible for melting the material, 6 indicates a heater for heating the crucible 7, and 8 indicates the direction of the gas introduced into the crucible 7.

In the rotating submerged spinning method and the apparatus for carrying out the method as described above, a fine wire can be obtained directly from a molten state. Therefore, it is possible to easily obtain a fine wire of a difficult-to-process material without requiring much energy.

[Problems to be Solved by the Invention] However, in the above-described rotating submerged spinning method, there is a problem that it is extremely difficult to efficiently collect the fine wire formed on the inner wall of the rotating drum 1. That is, in the conventional rotating submerged spinning method, the vicinity of the end portion of the thin wire ejected and formed in the cooling liquid layer at the start of ejection remains left in the cooling liquid. Therefore, in order to take out the end portion and recover the formed thin wire, the end portion must be taken out from the cooling liquid layer by some means. It was customary to stop the wire drawing once and take it out. Therefore, there is a drawback in that extremely complicated work is required. In particular, when the fine wire solidified in the cooling liquid layer is intended to be taken out from the inner wall of the drum which is continuously rotating, this drawback becomes a larger problem.

Therefore, an object of the present invention is to provide a method for winding a fine wire which can efficiently and reliably take out a fine wire obtained by a so-called rotating submerged spinning method.

[Means for Solving the Problems] The present invention reels a thin wire obtained by jetting a molten material as a thin stream into a cooling liquid layer formed on the inner wall of a rotating drum by a centrifugal force to solidify the molten material. It is a method of winding up to, and is characterized by the following.

In the rotary drum, a disc that is rotatably provided on the concentric shaft of the rotary drum is arranged. The reel is rotatably provided on the disc at an eccentric position.

Then, first, when the disk is rotated at the same angular velocity as the rotating drum without rotating the reel with respect to the disk, the end of the thin wire is attached to the reel. After that, the circumscribed circle that contacts the peripheral surface of the reel around the rotation axis of the disk and the tangential speed of the reel at the contact point with the reel are kept to be the same as the moving speed of the cooling liquid layer in the rotating drum. The thin wire is wound on the reel by increasing the rotation speed of the reel while decreasing the rotation speed of the disk.

[Operation] When the disk is rotated at the same angular velocity as the rotating drum without rotating the reel with respect to the disk, the end of the thin wire obtained by the rotating submerged spinning method is attached to the reel. In that state, the thin wire is not wound on the reel. Then, when the rotation speed of the reel is increased while the rotation speed of the disc is decreased, the thin wire is wound on the reel. When winding a thin wire, the circumscribed circle that is in contact with the peripheral surface of the reel about the rotation axis of the disc and the tangential direction speed of the reel at the contact point with the reel become the same as the moving speed of the cooling liquid layer in the rotating drum. By maintaining the above, the fine wire produced in the cooling liquid layer is wound on the reel without excess or deficiency.

[Example] FIG. 1 is a schematic front sectional view showing an example of an apparatus for carrying out the present invention, and FIG. 2 is a schematic side sectional view thereof. A cooling liquid layer 11 is formed on the inner wall of the rotating rotary drum 10 by centrifugal force. The molten material in the crucible 13 heated by the heater 12 is ejected as a fine stream from the nozzle 14 and is solidified in the cooling liquid layer 11 to be a fine wire 15.
Becomes

Inside the rotary drum 10, there is arranged a disc 16 rotatably provided on the concentric axis of the rotary drum 10. This disc 16
Are rotated by an external drive source.
Further, as shown in the drawing, a reel 17 is rotatably provided on the disc 16 at an eccentric position.

In the initial state, the disk 16 is rotated at the same angular velocity as the rotating drum 10 without rotating the reel 17 with respect to the disk 16. In this state, the tip of the thin wire 15 is mounted on the reel 17 through an appropriate means. The following can be considered as an example of the attachment means. That is, an iron jig for holding the thin wire 15 is arranged in the cooling liquid layer 11, and a magnet is arranged on the reel 17 correspondingly. And
By bonding the iron jig and the magnet,
On top of reel 17. As the magnet, not only an electromagnet but also a permanent magnet can be used.

Other attachment means may be a suction gas, or a jig extending from the disc 16 into the cooling liquid layer 11.

Reel 17 is not rotating with respect to disc 16
When the 16 is rotating at the same angular velocity as the rotating drum 10, it is easy to mount the thin wire 15 on the reel 17.
Further, in this state, the thin wire 15 is not wound on the reel 17.

After mounting the thin wire 15 on the reel 17, the circumscribed circle that contacts the peripheral surface of the reel 17 around the rotation axis of the disk 16 and the reel 17
The tangential speed of the reel 17 at the contact point with the rotating drum
Keep the same as the moving speed of the cooling liquid layer in 10,
The rotation speed of the reel 17 is increased while the rotation speed of the disk 16 is reduced. Then, finally, the rotational speed of the disk 16 is set to 0, and the peripheral speed of the reel 17 is made to match the speed of the cooling liquid layer 11. By the above operation, the fine wire 15 produced in the cooling liquid layer 11 by the spinning liquid spinning method is efficiently wound on the reel 17 without excess or deficiency. If the tangential speed of the reel 17 is higher than the moving speed of the cooling liquid layer 11,
The winding speed becomes higher than the wire-making speed, and it becomes difficult to obtain a continuous thin wire. On the other hand, if the tangential velocity is lower than the moving velocity of the cooling liquid layer 11, the cooling liquid layer
The amount of fine wires remaining inside 11 is large, which is not preferable for winding efficiency.

The present invention was carried out and the following results were obtained.

Example An attempt was made to wind a copper alloy thin wire using the apparatus shown in FIGS. 1 and 2. An electromagnet was provided on the outer peripheral portion of the reel 17. This electromagnet is capable of forming an excited state by an input signal from the outside. The outer diameter of the used reel 17 is
The outer diameter of the disc 16 was 200 mm and the disc 16 was 550 mm. The inner diameter of the rotary drum 10 was 600 mm. Coolant layer 1 before starting wire production
An iron fixing means was arranged in 1. The copper alloy wire production was started by such an apparatus. In the initial state, the angular velocity of the disc 16 and the angular velocity of the rotary drum 10 are set to be the same.

After 0.5 seconds from the start of wire making, the electromagnet was excited to fix the vicinity of the tip of the thin wire to the reel 17. Immediately thereafter, the circumscribed circle that contacts the peripheral surface of the reel 17 around the rotation axis of the disk 16 and the reel 17
The tangential speed of the reel 17 at the contact point with the rotating drum
The rotation speed of the reel 17 was increased while the rotation speed of the disk 16 was decreased while keeping the same movement speed of the cooling liquid layer 11 in the disk 10. And after 5 seconds from the start of wire drawing, the disk
The rotation speed of 16 is set to 0, and the peripheral speed of the reel 17 is set to the cooling liquid layer 11
About 3 kg of copper alloy thin wire was continuously wound on the reel 17 in conformity with the moving speed of the.

EFFECTS OF THE INVENTION Conventionally, after the completion of wire production by the rotating submerged spinning method, the thin wire could be collected only by a so-called batch method, but according to the present invention, the thin wire can be collected without stopping the rotation of the rotary drum. Can be collected on the reel. Therefore, the fine wire can be collected efficiently and inexpensively.

Further, when winding a thin wire, the circumscribed circle that is in contact with the peripheral surface of the reel about the rotation axis of the disk and the tangential direction speed of the reel at the contact point with the reel are the same as the moving speed of the cooling liquid layer in the rotating drum. Since it is maintained so that the thin wire produced in the cooling liquid layer can be wound up just enough.

The present invention is not limited to the usual winding of metal and alloy thin wires, but can be effectively applied to the winding of thin wires made of an amorphous alloy, an organic material or ceramics.

[Brief description of drawings]

FIG. 1 is a schematic front sectional view showing an example of an apparatus for carrying out the present invention. FIG. 2 is a schematic side sectional view of the device shown in FIG. FIG. 3 is a schematic front cross-sectional view for explaining the rotating submerged spinning method. FIG. 4 is a schematic vertical sectional view of the apparatus shown in FIG. In the figure, 10 is a rotating drum, 11 is a cooling liquid layer, 15 is a thin wire, 16 is a disc, and 17 is a reel.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Saburo Yoshimura 1-3-3 Shimaya, Konohana-ku, Osaka City, Osaka Prefecture Sumitomo Electric Industries, Ltd. Osaka Works (72) Inventor Kazumasa Fujino 1 Shimaya, Konohana-ku, Osaka City, Osaka Prefecture 1 to 3 Sumitomo Electric Industries, Ltd. Osaka Works

Claims (1)

[Claims] 1. A method of winding a thin wire obtained by jetting a molten material as a thin stream into a cooling liquid layer formed on the inner wall of a rotary drum by centrifugal force to solidify the material and winding the thin wire on a reel. In the rotating drum, a disc rotatably provided on the concentric axis of the rotating drum is arranged, and the reel is rotatably provided at an eccentric position on the disc. On the other hand, when the disk is rotated at the same angular velocity as the rotating drum without rotating the reel,
The end of the thin wire is attached to the reel, and then the tangential direction speed of the reel at the contact point with the circumscribed circle with respect to the peripheral surface of the reel about the rotation axis of the disc and the reel is set in the rotating drum. Winding the thin wire onto the reel by keeping the same moving speed of the cooling liquid layer and increasing the rotating speed of the reel while decreasing the rotating speed of the disk. Method.