KR100928572B1 - Homogeneous cooling device of coiled wire - Google Patents

Abstract

The present invention relates to a uniform cooling device for a coiled wire rod, wherein a plurality of wire transfer rolls (3) are fixed to cool the coiled wire rod (1) discharged from the laying head (2) and transfer it to the wire rod accumulator (6). It is arranged at intervals, the lower portion of the wire transfer roll (3) is provided with a blower (7), the side end portion of the wire transfer roll (3) is an eccentric guide roll (20) formed with spiral irregularities is a bevel gear (26) And 27 connected to the wire transfer roll 3 so as to be interlocked with the wire transfer roll 3 by a vertical direction, and the eccentric guide roll 20 at a position adjacent to the vertically connected eccentric guide roll 20. When the side overlap portion 9 of the coil-shaped wire rod 1 is lifted by the spiral irregularities during the rotation of the fan), a blower 40 for cooling the overlap portion 9 is provided, thereby perpendicular to the transfer path of the wire rod. Uniform mechanical properties are minimized by minimizing the variation in tensile strength of wire rods in one direction. It relates to a homogeneous cooling of the coil-wire device that allows.

Coil Wire Rod, Eccentric Guide Roll

Description

Apparatus for cooling uniformally of coiled wire rods

1 is a schematic cross-sectional view showing a cooling installation of a common coiled wire rod.

2 to 5 are plan views showing a conventional path adjusting device for a coiled wire rod.

Figure 6 is a three-dimensional perspective view showing a state in which the eccentric guide roll is installed in accordance with the present invention.

Figure 7 is an exploded perspective view of the eccentric guide roll portion according to the present invention.

8 is a front view showing the uniform cooling device of the wire rod according to the present invention.

9 is a cross-sectional view showing a wire feed roll according to the present invention.

10 is a plan view showing the transfer of the wire rod by the eccentric guide roll according to the present invention.

※ Explanation of symbols about main part of drawing ※

1: coiled wire rod 2: laying head

3: wire feed roll 4: path adjusting device

5: support frame 6: wire rod accumulator

7: lower blower 8: center

9: lap 20: eccentric guide roll

21: support bracket 22: support shaft

23: shaft pin 24: washer                 

25: Nut 26: Guide Roll Bevel Gears

27: Wire transfer roll bevel gear 28: Sprocket

29: chain 30, 31: rotary shaft

40: side blower 41: blower motor

42: blower fan 43: blower

The present invention relates to a uniform cooling device for coiled wire rods, and more particularly, guides the coiled wires discharged from the laying head using a eccentric guide roll to be transported along a straight path, and at the same time. The present invention relates to a coil-shaped wire rod uniform cooling device capable of cooling the coiled wire rod evenly by lifting the edge of the wire rod by the spiral irregularities formed on the outer circumference thereof to reduce the overlapping phenomenon of the wire rod edge.

In general, a billet produced in a wire casting process is processed into a wire having a small diameter through a process of rolling by a wire rolling mill. These wire rods have mechanical properties such as tensile strength by the cooling process.These wire rods have a small cross-sectional area and have a very long length for the unit billet, while the space for cooling the wires is narrow, so it is a laying head. It is put into the cooling process in the form of a coil through the facility called.                         

A cooling process of a general coil type wire rod will be described with reference to FIG. 1 as follows.

The coiled wire rod 1 discharged by the cone-shaped laying head 2 is placed on the wire transfer roll 3 rotatably mounted to the support frame 5, and the wire transfer roll 3 Cooled while being transported along), it is finally wound up to the wire rod accumulator (6). The path adjusting device 4 installed at the side end of the wire feed roll 3 guides the coiled wire 1 to be transported along a straight path. Details of the path adjusting device 4 are shown in FIG. 2. It will be described later with reference to Figure 5 to. In this transfer process, the coiled wire rod 1 is cooled by a blower 7 installed in the lower portion of the wire transfer roll 3, and has a constant mechanical property through the transformation process by the cooling.

This cooling process is divided into a plurality of zones (R1 ~ R9) along the conveying direction of the coil-shaped wire rod (1), the inlet zone (R1) on the laying head 2 side is discharged from the laying head (2) The coiled wire rod 1 provides a space in which an upper surface of the wire transfer roll 3 can be placed, and in the transformation progress zones R2 to R8 behind the inlet zone R1, the lower portion of the wire transfer roll 3 is provided. The transformation progress of the coil-shaped wire rod 1 is performed by the cooling air blown from the blower 7 installed in the outlet, and in the exit zone R9, the coil-shaped wire rod 1 is transformed to the wire rod accumulator 6. It is wound up. The wire transfer roll 3 is rotated by a drive motor (not shown). One drive motor is installed in each zone so that the wire transfer rolls 3 in the zone can be rotated simultaneously. It is desirable to be able to adjust the feed rate for each section of the mold wire (1).

In the cooling equipment of such coiled wire rod, the laying head 2 discharges the straight wire rod to the coiled wire rod 1 by centrifugal force by rotation, and the laying head 2 is used for the small diameter wire rod having a small diameter. When operating on a larger diameter wire than a large diameter wire rod, the diameter of the small wire rod is relatively small with respect to the centrifugal force, and when it falls on the wire feed roll 3, the rotation in the laying head 2 is performed. In the direction of rotation, on the other hand, in the case of large diameter wire, the weight is relatively large with respect to the centrifugal force, and when it falls on the wire feed roll 3, the phenomenon in the direction opposite to the direction of rotation in the laying head 2 This happens. Further, in the process of transferring the coil wire 1 along the upper surface of the wire feed roll 3, the wire feed roll 3 is in contact with the coil wire 1 having a hot state (about 770 ° C to 900 ° C). Due to the deterioration caused by intensive wear on one side, as a result, the coil-shaped wire rod (1) is biased toward any one side and the phenomenon of leaving the straight path continues.

Further, when the coiled wire rod 1 is cooled in an overlapped state on the wire transfer roll 3, as shown in FIG. 2, the central portion 8 of the coiled wire rod having a relatively small overlapping portion has an overlapping portion 9 at the edge. By cooling more rapidly, the mechanical properties of the coil-shaped wire rod 1 are changed, such as a change in tensile strength between the center portion 8 and the overlapping portion 9, resulting in an increase in defective products in the final wire rod product. .

2 to 5 show a conventional path adjusting apparatus for preventing the above path deviation.

As shown in FIG. 2, in the related art, a plurality of cylindrical guide rolls 10 are installed at regular intervals so as to be idle in a state perpendicular to the inside of the support frame 5 on which the wire transfer roll 3 is mounted. A method of guiding the transfer path of the wire rod 1 to the center is adopted, but this causes the coil-type wire rod 1 to collide with the guide roll 10 and to be guided to the center of the table 5 to cause scratches on the outer surface of the wire rod. In addition to reducing the quality of the wire rod, the coil-shaped wire rod 1 still has side overlaps 9, and thus the variation in mechanical properties due to the difference in cooling rate could not be solved.

In another conventional path adjusting device, as shown in FIG. 3, one end of the support member 13 having a predetermined length is rotatably fixed to the support frame 5 with the pin 11, and the other end thereof (ie, Cylindrical guide roll 15 is installed at the end of the feed direction of the wire rod so as to be rotatable, and the position of the guide roll 15 is adjusted by an adjustment bolt 12 coupled perpendicularly to the support frame 5. . In addition, the lubricant is supplied through the oil supply pipe 14 to smoothly rotate the guide roll 15. However, such a path adjusting device is also in contact with the length of the support member of the coil-shaped wire rod (1) which is inclined toward one side, the friction scratch occurs, the difference in the cooling speed between the wire center and the overlapping sides still exist mechanical The deviation of the properties was not solved.

The conventional path adjusting device shown in FIG. 4 is similar to the path adjusting device shown in FIG. 3 except that a plurality of guide rolls 16 are rotatably installed on the support member 17. According to such a path adjusting device, the deterioration phenomenon due to heat transfer is suppressed by the coil-shaped wire rod 1 contacting the plurality of guide rolls 16, but both sides overlap with the central portion 8 of the coil-shaped wire rod 1. The cooling rate difference between the parts 9 still exists, so that the product defect and the deviation of the mechanical properties could not be solved.                         

Another path adjusting device shown in FIG. 5 is the most recently used, and a guide roll 18 having a spiral concave-shaped body of upper and lower light beams and a spiral unevenness formed on the outer circumferential surface thereof has a wire transfer roll 3 having an upper end thereof. It is integrally mounted at both ends of the wire transfer roll 3 so as to face the center of the wire transfer roll 3, and configured to apply a force toward the center portion of the wire transfer roll 3 to the coiled wire rod 1 that has been separated from the straight path. Such a path adjusting device is an advanced method compared to the conventional apparatus for guiding both edges of the coil wire 1 to the center of the wire feed roll 3, but the tip of the coil wire 1 is also on one side. The coiled wire rod 1 is wound around the wire transfer roll 3 in the pulled state, and the gull-shaped friction flaws occur while forcibly pushing the wire rod by unevenness. There is still a difference in the cooling rate between the central portion 8 and the overlapping portions 9, which does not solve the problem that the coil-shaped wire rod 1 does not have uniform mechanical properties.

The present invention has been proposed in order to solve this problem, by using the eccentric guide roll to guide the coiled wire discharged from the laying head to be transported along the straight path, and at the same time the spiral formed on the outer peripheral surface of the eccentric guide roll Lifting the side overlaps of the coiled wire rods by irregularities reduces the overlapping of the edges of the coiled wire rods so that the coiled wire rods can be uniformly cooled, thereby minimizing the variation of mechanical properties in the direction perpendicular to the feed path of the wire rods. It is an object of the present invention to provide a uniform cooling device for wire rods using an eccentric guide roll.                         

In addition, in order to improve the uniformity of the wire cooling, the guide roll is installed at the end of the wire feed roll so as to be zigzag with respect to the moving direction of the coil-shaped wire rod, or the linearity of the wire feed is improved to facilitate the work in the post process. It is another object of the present invention to install the guide rolls to face each other at both ends of the wire feed roll in order to be able to do so.

In order to achieve the above object, the present invention provides a plurality of wire feed rolls arranged at regular intervals to cool the coil-type wire rods discharged from the laying head and transfer them to the wire rod accumulators, and a blower is installed below the wire transfer rolls. ,

At the side end of the wire transfer roll, a guide roll having a spiral unevenness is installed to be vertically connected to the wire transfer roll so as to be interlocked with the wire transfer roll by a bevel gear.

The vertically connected guide roll is installed in the proximal position, characterized in that the blower for cooling the overlapped portion is installed when the side overlap portion of the coil-shaped wire rod by the spiral irregularities when the guide roll is rotated.

In addition, the guide roll is composed of an eccentric guide roll, while pushing the coil-shaped wire rod that is biased to any one side of the wire transfer roll to the center, and at the same time to make the coil-shaped wire rod to proceed in a zigzag form fine overlapping phenomenon It is desirable to be able to reduce.

In addition, the guide roll is installed at the end of the wire transfer roll (3) so as to be in a zigzag form with respect to the traveling direction of the coil-shaped wire rod, or is installed so as to face each other at both ends of the wire transfer roll.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

Referring to Figure 6 and Figure 7 describes the installed state and configuration of the eccentric guide roll according to the present invention. A plurality of wire transfer rolls 3 are arranged in a row to transfer the coiled wire rods falling from the laying head, and the eccentric guide roll 20 is provided at the side ends of the wire transfer rolls 3. Installed perpendicular to A blower 7 for blowing cooling air to the entire coil-shaped wire rod is installed at the lower portion of the wire transfer roll 3, while only the side overlapping portion of the coil-shaped wire rod is applied to the adjacent position of the eccentric guide roll 20. The blower 40 which blows cooling air is installed. The blower 40 intensively cools only the side overlapping portions of the coil-type wire rods having a relatively slow cooling rate, thereby reducing the difference in cooling speed from the central portion of the coil-type wire rods. On the other hand, the eccentric guide rolls 20 are alternately arranged left and right at the end of each wire transfer roll 3 so as to be in a zigzag shape with respect to the traveling direction of the coil-shaped wire rod, by the arrangement of the eccentric guide roll 20 Coil-shaped wire rods are conveyed in a zigzag form while maintaining a straight transfer path as a whole, thereby reducing overlapping of edges. In another embodiment according to the present invention, the eccentric guide roll 20 is installed to face each other at both ends of the wire transfer roll (3) to further provide a straight path to the transfer path of the coil-shaped wire rod wire rod accumulator Can improve the workability.

The eccentric guide roll 20 may induce a straight transfer of the coil-shaped wire rod 1 as in the conventional guide roll shown in FIGS. 2 to 4 even when the eccentric guide roll is not eccentric. Unlike conventional guide rolls that change the feeding direction of the coil wire 1, the coil can be pushed by the eccentric rotation to push the edge of the coil wire 1 to the center of the wire feed roll 3 The path correction of the mold wire 1 can be performed more efficiently.

As shown in FIG. 7, the eccentric guide roll 20 is rotatable by supporting the support shaft 22 with the support bracket 21 by the shaft pin 23, the washer 24 and the nut 25. Is fixedly supported. Spiral unevenness is formed on the outer circumferential surface of the eccentric guide roll 20. The uneven unevenness of the helical reduces the lateral overlapping phenomenon by lifting the edge of the wire during the transfer of the coiled wire. On the other hand, the guide roll bevel gear 26 installed at the lower end of the support shaft 22 is engaged with the wire transfer roll bevel gear 27 provided at the end of the wire transfer roll 3, the eccentric guide roll 20 is wire rod It can be linked with the feed roll (3). In addition, the sprocket 28 is installed on one side rotation shaft 31 of the wire transfer roll 3, the sprocket 28 is connected to each other by a chain 29 by a plurality of wire transfer by a single drive motor Allow the roll (3) to rotate.

The operation of the homogeneous cooling device according to the present invention will be described in more detail with reference to FIG. That is, the eccentric guide roll 20 can solve the problems of the conventional path adjusting device by two technical configurations.

First, the eccentric guide roll 20 is formed with spiral irregularities on its outer circumferential surface, so that the edge portion of the coil-shaped wire rod 1 in contact with the eccentric guide roll 20 by rotating the eccentric guide roll 20 is helical. By raising along the unevenness of the coiled wire (1) reduces the overlap of the edge. That is, when the eccentric portion of the eccentric guide roll 20 is in the P1 position with respect to the rotation axis thereof, when the edge portion of the coil-shaped wire rod 1 is caught by the irregularities formed on the circumferential surface of the eccentric guide roll 20, the eccentric guide roll 20 As the eccentric portion of the wire rod is rotated to the P2 position, the wire rod is pushed to the center portion of the wire transfer roll 3, and at the same time, the edge portion thereof is lifted along the unevenness, so that the side overlap of the coil-shaped wire rod 1 is reduced. At this time, the blower 40 installed in the adjacent position of the eccentric guide roll 20 blows cooling air to the edge of the raised coil-type wire 1 to cool by overlapping of the edges of the coil-type wire 1. Reduce the speed difference The blower 40 is a blower provided on the side of the eccentric guide roll 20 to transfer the blowing motor 41 for rotating the blowing fan 42 and the cooling air generated by the blowing fan 42 to the wire rod. It consists of 43. Then, when the eccentric guide roll 20 is rotated from the P2 position to the P1 position, the edge portion of the coiled wire rod 1 that has been lifted is placed on the wire transfer roll 3 again and the wire transfer roll 3 is moved. Continue to be transported.

Second, the eccentric guide roll 20 is one side of the wire transfer roll (3) by pushing the edge of the coil-shaped wire rod (1) in contact with the eccentric guide roll 20 to the center of the wire transfer roll (3) while rotating the eccentric The coiled wire rod 1, which is biased and conveyed, can maintain a straight path.

Furthermore, in arranging the eccentric guide roll 20, the distance between the eccentric guide rolls 20 at both side ends of the wire transfer roll 3 is the eccentric portion of the eccentric guide roll 20 with respect to the rotation axis. By arranging to be smaller than the diameter of the coiled wire rod on the basis of the case where it is located on the roll 3 side, all the coiled wire rods 1 including the coiled wire rod 1 normally transferred along the straight path are eccentric guide rolls 20. ), The arrangement of the eccentric guide roll 20 allows the edges of all the coiled wire rods 1 to be lifted along the spiral irregularities of the eccentric guide roll 20, while all the coiled wire rods 1 are eccentric guide rolls 20. It is pushed into the center portion of the wire transfer roll (3) by the) to allow the coil-shaped wire rod (1) to be conveyed in a zigzag form along the straight path as a whole. By the arrangement of the eccentric guide roll 20, it is possible to further improve the uniform cooling of the coil-shaped wire rod (1). This is because not only the edge of the coil wire 1 is lifted, but also the overlap of the edge can be further reduced by transferring the coil wire 1 in a zigzag form.

In short, the uniform cooling device of the coil-shaped wire rod according to the present invention is composed of an eccentric guide roll 20 formed with spiral irregularities on the outer circumferential surface and a blower 40 installed in the adjacent position, the coil type is normally conveyed along a straight path The edge overlap of all the coiled wire rods 1 including the wire rod 1 is improved to allow the entire wire rod to be uniformly cooled.

9 is a view illustrating a state in which the wire transfer roll is installed according to the present invention, wherein the wire transfer roll 3 is formed in a hollow shape so that the coolant can pass therethrough. Since the wire rod of high temperature (approximately 770 ° C. to 900 ° C.) is placed on the wire transfer roll 3, the wire transfer roll 3 is deformed and warped when used for a long time, thereby both sides of the wire transfer roll 3 are formed. The gap between the support frame and the wire transfer roll 3, which is supported at the end, is widened, so that the wire rod end portion is caught, and thus, the wire is impossible to proceed. Therefore, the wire feed roll 3 and the rotary shafts 30 and 31 provided at both side ends thereof are formed in a hollow shape, and the wire transfer rolls 3 due to thermal deformation are formed by communicating with each other to allow the cooling water to pass therethrough. ) Warpage can be prevented.

Figure 10 is a plan view showing a feed path of the wire rod by the eccentric guide roll according to the present invention. The conveying path of the coil-shaped wire rod 1 is generally in a straight line shape but is zigzag-shaped as a whole by the eccentric guide roll 20 provided in a zigzag shape with respect to the traveling direction of the coil-shaped wire rod 1. This zigzag transfer reduces the overlapping phenomenon of the edge of the coil-shaped wire rod 1, which reduces the overlapping of the edge by lifting the edge of the wire rod by spiral irregularities formed on the outer circumferential surface of the eccentric guide roll 20. In addition, it improves the uniform cooling property of the whole coil-shaped wire rod 1.

As described above, according to the uniform cooling device of the wire rod according to the present invention, the edges of all coil-shaped wire rods discharged from the laying head are lifted by the spiral irregularities formed on the outer circumferential surface of the eccentric guide roll to reduce the side overlapping. By intensively cooling only the side overlapping portion by the blower provided in the, it is possible to reduce the difference in the cooling rate between the central portion and the side overlapping portion of the coil-shaped wire rod so that the coil-shaped wire rod can be uniformly cooled.                     

In addition, by the eccentric rotation of the eccentric guide roll to push all the coil-shaped wire rod to the center of the wire transfer roll so that the coil-shaped wire rod is conveyed in a zigzag form to further reduce the side overlap phenomenon.

Claims (4)

A plurality of wire transfer rolls 3 are arranged at regular intervals to cool the coiled wire rod 1 discharged from the laying head 2 and to be transferred to the wire rod accumulator 6, and the lower portion of the wire transfer roll 3 is disposed. An air blower 7 is installed at the side end of the wire transfer roll 3, and an eccentric guide roll 20 having spiral unevenness is interlocked with the wire transfer roll 3 by bevel gears 26 and 27. The wire transfer roll 3 is installed so as to be vertically connected, and the coil-shaped wire rod 1 is formed at the proximal position of the vertically connected eccentric guide roll 20 by the spiral irregularities when the eccentric guide roll 20 is rotated. And a blower (40) for cooling the overlap (9) when the side overlap (9) of the side is lifted. delete The method according to claim 1, The eccentric guide roll (20) is a wire rod uniform cooling device, characterized in that installed in the end of the wire transfer roll (3) in a zigzag form with respect to the traveling direction of the coil-shaped wire rod. The method according to claim 1, The eccentric guide roll (20) is a wire rod uniform cooling device, characterized in that installed to face each other at both ends of the wire transfer roll (3).

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