JPH06246396A - Wire rod winding device in continuous casting equipment for wir rod - Google Patents

Abstract

PURPOSE:To stabilize the casting quality of a continuously cast wire rod. CONSTITUTION:A molten metal of a Ni base alloy or a Co base alloy received in a molten metal receiving part 1 is cooled and solidified by feeding it in a water cooling mold 2, and together a solidified wire 3 is intermittently pulled out with an intermittent pinch roller 4. The cast wire 3 is draw with a drum 50 of a winding device rotated with a motor 37 through a torque limiter 40, after passing through a drawing die 5, curved in a horizontal surface with a reform roller, and wound round the drum 50. Because the wire 3 is not drawn with the force larger than a prescribed value with a function of the torque limiter 40, the quality of the wire during casting can be stabilized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire winding device for use in equipment for producing metal wire by horizontal continuous casting, and more particularly, to the above-mentioned casting process without affecting horizontal continuous casting of wire. The present invention relates to a wire rod winding device improved so that continuous wire drawing can be performed.

[0002]

2. Description of the Related Art Conventionally, a continuous casting facility 10 as shown in FIG. 3 has been used to manufacture a wire rod made of a Ni-base alloy or a Co-base alloy. That is, the molten metal of the Ni-based alloy or the Co-based alloy contained in the molten metal containing portion 1 is sent from the molten metal containing portion 1 to a horizontally extending mold 2 to be cooled and solidified, and the solidified wire 3 is intermittently formed. It is pulled out intermittently from the mold 2 by the pinch roller 4. Then, the cast wire rod 3 is pushed into the wire drawing die 5 from the upstream side by the intermittent pinch roller 4, and the wire rod 3 is pulled by the pulling pinch roller 6 provided immediately downstream of the wire drawing die 5. Thus, the wire rod 3 is drawn by the wire drawing die 5. Further, the wire rod 3 which has been drawn is curved by a curling roller 7 in a horizontal plane to facilitate winding, and then wound on the drum 16 of the winding device 15.

[0003]

As described above, in the wire drawing step in the wire drawing die 5, the wire drawing die 5
A pulling pinch roller 6 provided on the downstream side of the wire pulls the wire rod 3, and the intermittent pinch roller 4 provided on the upstream side of the wire drawing die 5 intermittently rotates to draw the wire rod 3. It is designed to be pushed toward the die 5. However, the pulling pinch roller 6 on the downstream side
When the wire rod 3 is pulled too strongly, the force for pulling the wire rod 3 reaches the upstream side of the intermittent pinch roller 4, and the wire rod 3 which is continuously cast and is cooled and solidified inside the water-cooled mold 2 is strongly strengthened. Will pull. On the contrary, when the pulling pinch roller 6 on the downstream side has a weak force to pull the wire rod 3, the intermittent pinch roller 4 increases the resistance force of pushing the wire rod 3 into the wire drawing die 5, and the intermittent pinch roller 4
Cannot be smoothly rotated intermittently. Therefore, it is required to rotate the intermittent pinch roller 4 and the pulling pinch roller 6 in perfect synchronization with each other. However, due to the nature of continuous casting, both of them have to be rotated intermittently, so that they rotate. It is difficult to completely synchronize. Further, since the wire rod 3 is soft in a red-hot state on the upstream side of the wire drawing die 5, the intermittent pinch roller 4 cannot strongly sandwich the wire rod 3. for that reason,
When a strong pulling force for the wire rod 3 is applied from the downstream side, the intermittent pinch roller 4 cannot prevent the force from reaching the upstream side. Therefore, in the conventional continuous casting facility 10, there is a case where the wire rod 3 to be continuously cast cannot be continuously drawn out from the water-cooled mold 2 at a constant intermittent speed, which causes a problem in casting quality.

In addition, the wire rod winding device 15 for winding the continuously cast wire rod is provided with a motor (not shown) for rotating a drum 16 for winding the wire rod 3, so that the squeeze roller 7 loads the wire rod 3. Wire rod 3 with force exceeding resistance
It is supposed to pull. However, although this motor is set so that the intermittent pinch roller 4 and the tension pinch roller 6 continuously rotate in synchronization with the speed at which the wire rod is fed, the wire rod 3 wound on the winding drum 16 is Rotational inertia may change due to the increase in weight, and rotation may be out of synchronization. Further, in the conventional example, since the magnitude of the torque transmitted to the winding drum 16 by the motor provided in the wire rod winding device 15 is not controlled, the wire rod winding device 15 causes the wire rod winding device 15 to move when the synchronization is deviated. Was strongly pulled from the downstream side to cause a problem in casting quality, and in the worst case, the wire 3 was broken in the water-cooled mold 2 from the middle.

Therefore, the present invention has been made in view of the above situation, and it is an object of the present invention to provide a wire winding device capable of winding the wire 3 while stabilizing the quality of continuous casting. To aim.

[0006]

The wire rod continuous casting equipment according to claim 1 of the present invention which solves the above-mentioned problems, comprises a mold for continuously casting wire rods, and intermittently rotating the wire rods to remove the wire rods from the mold. A pinch roller for drawing out, a wire drawing die provided in front of the pinch roller in the wire drawing direction for drawing the wire, and a wire material winding device for winding the wire material drawn by the wire drawing die. To be done.
The wire winding device of the present invention includes a winding drum that winds the wire and a driving unit that rotates the winding drum, and the winding drum and the driving unit are connected via a torque limiter. It is characterized by

[0007]

In the wire rod continuous casting equipment of the present invention, since the pulling pinch roller downstream of the wire drawing die, which is provided in the conventional example, is not provided, the rotation of the intermittent pinch roller and the pulling pinch roller is out of synchronization. The problem described above does not occur. Further, the torque limiter provided in the wire rod winding device of the present invention prevents the tensile force of a certain value or more set on the wire rod passing through the wire drawing die from acting, and the force for pulling the wire rod is predetermined. When the driving force reaches the upper limit of the above condition, the drive device idles, so that it is not necessary to synchronize the rotations of the wire winding device and the intermittent pinch roller.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. Further, in the following description, the same parts as those of the conventional example are denoted by the same reference numerals to simplify the description.

EXAMPLE A continuous wire rod casting equipment 20 according to an embodiment of the present invention shown in FIG. 1 is provided immediately downstream of a wire drawing die 5 with respect to the conventional continuous wire rod casting equipment 10 shown in FIG. Although the pulling pinch roller 6 that had been used has been removed and the wire winding device 25 has been changed, the structure of the molten metal container 1, the water-cooled mold 2, the intermittent pinch roller 4, the wire drawing die 5 and the squeezing roller 7 has been changed. Is the same as the conventional continuous casting facility 10. That is, the Ni contained in the molten metal container 1
A molten alloy containing a base alloy or a Co-based alloy is fed from the molten metal container 1 into a horizontally extending mold 2 for cooling and solidification, and the solidified wire 3 is intermittently pulled out from the mold 2 by an intermittent pinch roller 4. . Then, the cast wire 3 is drawn by a wire drawing die 5 provided in front of the intermittent pinch roller 4 in the wire drawing direction, and then the wire is bent in a horizontal plane by a squeeze roller 7 to facilitate winding. Then, the drum 50 of the winding device 25
To be wound up.

As shown in FIG. 2, a winding device 25 for winding the continuously cast wire rod 3 of the present invention comprises a winding drum 50 around which the wire rod 3 is wound and a drive device 30 for supporting and rotating the drum 50. Become. The drum 50 is formed into a cylindrical basket by bending a steel wire around the pipe 51 as a central axis and assembling it. Then, the lower end of the pipe 51 is externally fitted to the upper part of the rotary shaft 36 of the driving device 30 and fixed by a bolt, so that the driving device 30
Supported and rotated. Further, the drive device 30 is
It is supported by a frame constituted by combining a vertical wall 32 and a top plate 33 with a bottom plate 31 having wheels that roll on the floor surface, a bearing 34 attached to the bottom plate 31 and a bearing 35 attached to the top plate 33. The bottom plate 31
And a motor 37 attached to the vertical wall 32 for driving and rotating the rotary shaft 36. A friction type torque limiter 40 using a multi-plate clutch is attached to the rotary shaft 36, and a sprocket 42 is attached to a flange 41 of the torque limiter 40.
Is attached. The sprocket 38 attached to the output shaft of the motor 37 and the rotating shaft 3
A chain 39 is stretched between the sprockets 42 on the sixth side.

The torque limiter 40 limits the torque transmitted from the motor 37 to the rotary shaft 36 to a predetermined value or less, and the transmitted torque, that is, the winding drum 50 rotates to pull the wire 3. When the force reaches a predetermined maximum value, the flange 41 of the torque limiter 40 idles with respect to the torque limiter 40 while continuously transmitting the driving torque of the motor 37. The maximum value of the torque transmitted by the torque limiter 40 is such that the force of pulling the wire rod 3 by the wire rod winding drum 50 is 20 kg at the position of the wire drawing die 5.
Is set not to exceed. That is, if the pulling force of the wire rod 3 passing through the wire drawing die 5 is 20 kg or less, this pulling force does not reach the upstream side and affect continuous casting. Therefore, the maximum value of the torque transmitted by the torque limiter 40 is 20K, which is the maximum value of the force for pulling the wire rod 3 passing through the wire drawing die 5.
g, the pulling force required for the wire rod 3 to pass through the squeeze roller 7, and the total value of the pulling force that balances the friction loss during the guide of the wire rod 3 to the winding drum 40 are the sum of the forces for pulling the wire rod 3. At the same time, this value is multiplied by the value of the radial dimension of the wire rod winding drum 50 to obtain a torque value.

Next, the operation of the above-described wire winding device 25 of this embodiment will be described.

First, in the wire rod continuous casting equipment 20 of the present invention, the wire rod 3 has a force by which the intermittent pinch roller 4 pushes the wire rod 3 into the wire drawing die 5 and the wire rod winding device 25.
The wire passes through the wire drawing die 5 and is drawn by the force of winding and pulling the wire 3. At this time, the winding drum 5 provided in the wire winding device 25 as described above.
The torque limiter 40 connecting 0 and the driving device 30 for rotating the drum is a torque transmitted from the driving device 30 to the winding drum 50, that is, a force of the wire winding drum 50 winding the wire 3. By limiting the upper limit value, the wire rod 3 is passing through the wire drawing die 5.
Do not apply a pulling force of 20 kg or more to. As a result, the pulling force of the wire rod 3 reaches the upstream of the intermittent pinch roller 4, and the casting quality of the wire rod 3 which is being cooled and solidified inside the water-cooled mold 2 becomes unstable, or the wire rod 3 is in the middle. It does not break from.

Further, when the drive torque transmitted from the drive unit 30 to the winding drum 50 reaches a predetermined upper limit value, the torque limiter 40 continuously transmits the drive torque while the torque limiter 40 is being transmitted. Flange 4
That is, since the motor 37 of the driving device 30 is idled, it is not necessary to synchronize the rotation of the intermittent pinch roller 4 and the rotation of the wire winding device 25. Therefore, the wire rod winding drum 50 rotates to wind the wire rod 3 when the wire rod 3 can be wound with a pulling force equal to or less than a predetermined value, and when the pulling force of the wire rod 3 exceeds a predetermined value. It stands still without rotating. At this time, the intermittent pinch roller 4 is intermittently operated 5 to 6 times per second, and the length of the wire rod fed by each intermittent rotation is extremely short. Furthermore, since the wire rod 3 wound around the winding drum 50 is loosened, this acts as a buffer, and the winding drum 50 itself does not repeat intermittent rotation.

[0015]

As described above, in the wire rod continuous casting equipment of the present invention, the pulling pinch roller provided immediately downstream of the wire drawing die in the conventional example is eliminated, and the wire rod winding device is wound up. Since the drum and the driving means for rotating the drum are connected via the torque limiter, the following excellent effects are obtained.

That is, since the pulling pinch roller provided immediately downstream of the wire drawing die in the conventional example is abolished, the wire rod is prevented from being strongly pulled due to poor synchronization of the rotations of the pulling pinch roller and the intermittent pinch roller. Thus, it is possible to prevent the tensile quality from reaching the wire rod being cast and being cooled and solidifying, thereby making the casting quality unstable and breaking the wire rod being cast.

In the present invention, the force required for the wire to pass through the wire drawing die is determined by the force of the intermittent pinch roller pushing the wire into the wire drawing die and the force of the wire winding device winding and pulling the wire. However, since the winding drum of the wire winding device and the drive device for rotating the drum are connected by the torque limiter, the force for pulling the wire by the wire winding device can be controlled to be equal to or less than the set value. Furthermore, when the force for pulling the wire rod reaches a predetermined value, the torque limiter idles the drive device while continuously transmitting the pulling force to the wire rod, thus synchronizing the rotation of the intermittent pinch roller and the drive device. I no longer need it. As a result, even if the rotation of the intermittent pinch roller and the drive device are out of synchronization, the wire rod passing through the wire drawing die is not subjected to a pulling force of a certain value or more, so that a too strong pulling force is generated. It extends to the wire that is being cooled and solidified, making the casting quality unstable,
It is possible to avoid breaking the wire rod during casting.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing an entire wire rod continuous casting facility including a wire rod winding device of the present invention.

FIG. 2 is a sectional view showing a structure of a wire rod winding device of the present invention.

FIG. 3 is a conceptual diagram showing an entire conventional wire rod continuous casting facility.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Molten metal storage part 2 Water cooling mold 3 Wire rod 4 Intermittent pinch roller 5 Wire drawing die 6 Pulling pinch roller 7 Stretching roller 20 Wire rod casting equipment of the present invention 25 Wire rod winding device of the present invention 36 Rotating shaft 37 Drive motor 40 Torque limiter 50 Winding drum

Claims (1)

[Claims] 1. A mold for continuously continuously casting a wire rod, a pinch roller which is intermittently rotated to pull out the wire rod from the mold, and a mold which is provided in front of the pinch roller in the wire rod pulling-out direction to draw the wire rod. A wire drawing die,
In a wire rod continuous casting facility including a wire rod winding device that winds the wire rod drawn by the wire drawing die, the wire rod winding device rotates a winding drum that winds the wire rod and the winding drum. With a driving means,
A wire rod winding device in a wire rod continuous casting facility, wherein the winding drum and the driving means are connected via a torque limiter.