KR20160077494A - Apparatus for cooling wire rod coil - Google Patents

Abstract

The present invention relates to an apparatus to cool a wire rod coil which prevents the wire rod coils wound in a pre-process and a post-process from tangling. More specifically, the apparatus to cool the wire rod coil in accordance with an embodiment of the present invention, comprises: a laying head which winds wire rod coils which are periodically injected; a conveyor which transports the wound wire rod coils which are periodically extracted from the laying head; a blowing unit which cools the wound wire rod coils transported by the conveyor; and a control part which controls a transporting rate of the conveyor. In regards to this, the control part is able to change the transporting rate of the conveyor when the winding of the wire rod coils injected into the laying head is started, and when the winding of the wire rod coils is finished.

Description

[0001] Apparatus for cooling wire rod coil [0002]

The present invention relates to a wire coil cooling apparatus.

Generally, the wire rod is cooled in a cold water bath after rough rolling (rough rolling, intermediate rough rolling, intermediate rolling and finishing rolling), then wound (integrated) and put into a correcting line. Such a wire rod has a diameter of 5.5 to 15 mm It will produce wire rod and large diameter wire with diameter of 15 ~ 42 mm.

On the other hand, in the case of a small-diameter wire rod, if it is formed into a helical coil shape through a laying head, the heat treatment is performed in parallel with the conveying of the conveyor, then is integrated through a reforming tube, .

The wound wire coil continuously wound in the form of a coil in the laying head is moved at a constant speed through the conveying roller of the conveyor. In this case, windings of the same strength are provided in the width direction of the wound wire coil.

When the windings of the same intensity in the width direction of the wound wire coil are provided, a substantial difference in the stacking density occurs between the side portion and the center portion of the wire coil when the wire coil is stacked. As a result, a temperature difference between the central portion of the wire rod coil and the side portion is significantly increased up to 80 ° C at the time when the transformation of the cooled material occurs.

As described above, the microstructure varies in the width direction of the wire-wound coil due to the temperature deviation due to the difference in cooling rate between the wire-wound coils depending on the difference in the stacking densities, resulting in product failure.

Further, when the microstructure of the wire coil differs due to the cooling deviation of the wire coil, an additional heat treatment process is required, which causes an increase in the production cost.

Furthermore, when the wound wire coil is gradually cooled, the wire coil wound in the wire process and the wire coil wound in the subsequent process may overlap with each other due to uneven wear and slip between the wire coil and the feed roller. Alternatively, when a plurality of wire coil coils are located on the conveyer other than the wire coil wound in the wire process and the wire coil wound in the subsequent process, the load of the motor driving the conveyor may increase.

The object of the present invention is to provide a wire coil cooling apparatus capable of eliminating a cooling imbalance due to the density of a wire coil and eliminating the entanglement of a wire coil wound in a wire process and a wire coil wound in a subsequent process.

According to an embodiment of the present invention, there is provided a wire-wound coil cooling apparatus comprising: a laying head for winding a wire-wound coil to be charged periodically; A conveyor for conveying the wound wire coil extracted periodically from the laying head; An air blowing unit for cooling the wound wire coil to be conveyed through the conveyor; And a control unit for controlling the conveying speed of the conveyor. And the control unit may change the feeding speed of the conveyor at a winding start point of the wire coil inserted into the laying head and a winding end point of the wire coil.

Further, a sensing sensor senses the position of the wire rod coil that is periodically inserted and the wire rod coil that is periodically extracted. As shown in FIG.

In addition, the detection sensor may include a first sensor disposed at an inlet of the laying head, and a second sensor disposed at a dropping point of the wound wire coil to the conveyor.

In addition, the controller may control the speed of the conveyor according to the detection result output from the first sensor and the second sensor.

The control unit may control the conveyor at a first speed when the wire coil is positioned on the inlet side of the laying head and the wound wire coil is not located at the drop point, It is possible to control the conveyor at a second speed when the wire coil is not positioned at the inlet side of the laying head and the wound wire coil is located at the drop point.

In addition, the first speed may be slower than the second speed.

The wire-wound coil cooling apparatus according to an embodiment of the present invention can eliminate the cooling imbalance caused by the density of the wire-wound coil and eliminate the entanglement between the wire-wound coil wound in the wire-winding process and the wire-

1 is a view showing a wire-wound coil cooling apparatus according to an embodiment of the present invention.
2 is a graph showing a control speed of a conveyor according to an embodiment of the present invention.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

FIG. 1 is a view showing a wire coil cooling apparatus according to an embodiment of the present invention, and FIG. 2 is a graph showing a control speed of a conveyor according to an embodiment of the present invention.

The wire coil cooling apparatus according to one embodiment may include a lifting head 130, a conveyor 140, a blowing unit 150, an accumulator 160, and a sensor 170. In addition, , And a water jacket (120).

The rolling mill 110 rolls the wire rod to produce a wire rod coil, and provides the wire rod coil 120 to the wire rod 120. The water jacket 120 cools the wire coil with cooling water, and provides the cooled preheater coil to the laying head 130. The laying head 130 winds the wire rod coil to be delivered, and the wire rod coil 10 wound by the laying head 130 is dropped and conveyed to the conveyer 140. The conveyor 140 includes at least one conveying roller 140a to guide the wire coil 10 dropped onto the conveyor 140 to the conveying path so that the wire coil is continuously fed to the collector 160 . The collector 160 integrates the wire coil 10 to produce the final product.

When the wire coil 10 continuously wound in the form of a coil in the laying head 130 is dropped and conveyed to the conveyor 140, the wire coil 10 is wound around the winder unit 140 disposed on the lower side of the conveyor 140, The air can be cooled to a low temperature by the air blown from the heat exchanger 150.

The air blowing unit 150 includes a plurality of blowers 150a and a plurality of blowers 150a that are continuously arranged on the lower side of the conveyor 140 and correspond to each of the plurality of blowers 150a to blow air from the air blower 150a And may include a duct 150b. At this time, the air blown toward the conveyor 140 side by the air duct 150b can be injected into the opening portion disposed between the conveying rollers 140a, that is, the nozzle opening 150c.

The sensing sensor 170 may sense at least one of the wire rod coil inserted into the rowing head 130 and the wire rod coil 130 moved through the conveyor 200. The sensing sensor 170 may include a first sensor disposed on the inlet side of the running head 130 and may include a second sensor disposed on the conveyance path side formed by the conveyor 140. [ At this time, the second sensor may be disposed on the conveyor 140 on the drop point side of the wire rod coil 10. The first sensor and the second sensor may include a head-mounted display (HMD).

In order to prevent overlapping of the wire-wound coils wound and wound in each step, the wire-wound coils are wound around the laying head 130 with a predetermined period, And the laying head 130 can periodically extract the wire coil wound by winding the wire coil.

The first sensor may detect the presence of the wire rod coil moving between the water jacket 120 and the laying head 130, specifically, the wire rod coil inserted into the laying head 130 at regular intervals. In addition, the second sensor can detect the presence of the wound wire rod coil 10 wound around the lifting head 130 and falling onto the conveyor 200.

The control unit 180 receives the detection result from the detection sensor 170 and can control the moving speed of the conveyor 140 according to the received detection result. The control unit 180 may control the moving speed of the conveyor 140 according to the presence of the wire coil detected by the first sensor and the second sensor. Specifically, the control unit 180 determines the winding start point of the wire rod coil and the wire winding end point of the wire rod coil 130 that are input to the running head 130 from the detection result transmitted from the detection sensor 180, The conveying speed of the conveyor 140 can be changed at each time point.

Hereinafter, for convenience of explanation, the first sensor and the second sensor output a high-level signal when each sensor senses the presence of the wire coil, so that when the presence of the wire coil is not detected, .

Referring to FIG. 2, the control unit 180 can control the conveyor 140 at the first speed under the first condition, and can control the conveyor 140 at the second speed under the second condition. The control unit 180 can control the conveyor 140 to operate at the previous speed when the first condition and the second condition are not satisfied.

In this case, the first condition is a case where the signal output from the first sensor is at a high level, and the signal output from the second sensor is at a low level. The second condition is that the signal output from the first sensor is low level, 2 This corresponds to the case where the signal output from the sensor is high level.

Specifically, the first condition corresponds to a case where the wire coil moves between the water jacket 120 and the lifting head 130, and the wire coil does not exist on the dropping point of the conveyor 140. This is because the wire coil to be wound by the laying head 130 is inserted into the laying head 130 and the wire coil having been wound in the previous step is dropped onto the conveyor, can do.

In other words, the first condition is a time point at which the wire-wound coil wound around in the previous step is moved and the wire-wound coil to be wound in the subsequent step is inserted, which can be regarded as the starting point of winding of the wire- The control unit 180 controls to move the conveyor at the first speed when the first condition is satisfied, wherein the first speed may be a speed slower than the second speed. At this time, as an example, the first speed may be 0.1 m / s.

It is possible to increase the stacking density of the wire coil and suppress the occurrence of the low temperature structure in the wire coil by controlling the winding speed of the wire coil in the subsequent process at a first speed that is slower than the second speed.

The second condition corresponds to a case where the wire coil does not exist between the water jacket 120 and the lifting head 130 and the wire coil falls down at the dropping point of the conveyor 140. This may be the time when the wire rod coil wound on the laying head 130 is dropped by the conveyor and the wire rod coil for winding in the subsequent process is inserted into the laying head 130.

In other words, the second condition is a time before the wire coil to be wound in the previous step is dropped onto the conveyor and the wire coil to be wound in the subsequent process is inserted into the laying head. This is the time when the winding of the wire coil is completed .

The control unit 180 can control the conveyor at the second speed until the first condition is fulfilled from the second condition that the wire coil is wound on one process, and the second speed may be faster than the first speed .

It is possible to control the conveyor at a second speed faster than the first speed from the point at which the wire coil is wound on one process, thereby ensuring the distance between the wire coils conveyed in the previous and subsequent processes. Further, the number of wire-wound coils wound on the conveyor can be reduced to reduce the load on the motor for driving the conveyor, thereby securing productivity stability.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Therefore, the spirit of the present invention should not be construed as being limited to the above-described embodiments, and all of the equivalents or equivalents of the claims, as well as the following claims, I will say.

10: wire coil
110: rolling mill
120: water cannon
130: Leigh Head
140: Conveyor
150: blowing unit
160: Collector
170: Detection sensor
180:

Claims (6)

A laying head for winding up a wire coil to be charged periodically;
A conveyor for conveying the wound wire coil extracted periodically from the laying head;
An air blowing unit for cooling the wound wire coil to be conveyed through the conveyor; And
A control unit for controlling a conveying speed of the conveyor; Lt; / RTI >
Wherein the control unit changes the conveying speed of the conveyor at a winding start point of the wire coil inserted into the laying head and a winding end point of the wire coil.
The method according to claim 1,
A sensing sensor for sensing a position of the wire rod coil being periodically inserted and the wire rod coil being periodically extracted; Further comprising a wire coil cooling device.
3. The apparatus according to claim 2,
A first sensor disposed at a feeding port of the laying head, and a second sensor disposed at a dropping point of the wound wire coil to the conveyor.
3. The apparatus of claim 2,
And controlling the speed of the conveyor in accordance with the detection result output from the first sensor and the second sensor.
The apparatus of claim 3,
Controlling the conveyor at a first speed when the wire coil is positioned on the inlet side of the laying head and the wound wire coil is not located at the drop point,
And controls the conveyor at a second speed when the wire coil is not located on the inlet side of the laying head and the wound wire coil is located at the drop point.
5. The method of claim 4,
Wherein the first speed is slower than the second speed.

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