KR20240079586A - Asymmetric rolling system and method using this - Google Patents

Abstract

The present invention relates to an asymmetric rolling system and method that can improve the physical properties of a material, comprising a first work roll in contact with a material to be rolled, and a second work roll having a second radius larger than the first radius of the first work roll. A rolling unit that is provided with a roll and a drive roll formed above or below the first work roll to contact the first work roll and drive the first work roll to asymmetrically roll the rolled material; a rolling drive unit that drives the second work roll or the drive roll; A push roll unit in which a plurality of push rolls corresponding to each other in the front and rear directions of the first work roll are arranged at regular intervals along the longitudinal direction of the first work roll to restrain the first work roll in the front and rear directions. (Push Roll unit); A measuring unit that measures the rolled material rolled in the rolling unit; And a resultant force that controls the pressure of the push roll unit to compensate for the deformation of the rolled material according to the measurement value of the rolled material measured by the measuring unit, and presses the first work roll with the push roll unit on both sides. It may include a control unit that controls the plurality of push rolls while maintaining uniformity at the plurality of points where the plurality of push rolls are formed.

Description

Asymmetric rolling system and method using this}

The present invention relates to an asymmetric rolling system and method, and more specifically, to an asymmetric rolling system and method that can improve the physical properties of materials.

A rolling process can generally be performed to process a metal member into a wide but thin plate with a certain standard, such as lithium foil. In this rolling process, as the thickness of the rolled material changes, the microstructure inside the rolled material may also change accordingly.

According to these changes in the microstructure of the rolled material, the crystals first exhibit a texture in which they are oriented in the azimuth direction. The texture that appears through such rolling has a very close relationship with the material properties, such as formability, of the rolled material.

Therefore, by controlling the texture of the rolled material during the rolling process, material properties such as formability of the rolled material can be improved after rolling.

Conventionally, in order to improve these material properties, an asymmetric rolling technology has been developed that uses at least one pair of work rolls with different radii so that shear deformation can be easily achieved even in materials with poor room temperature formability.

However, in this conventional asymmetric rolling technology, during the rolling process, a strong reaction force is applied to the work roll with a relatively small radius in the front-back direction, that is, in the direction of the material to be rolled, so that the work roll with a small radius is easily deformed, and in the process, the work roll with a small radius is subjected to pressure. Various defects such as uneven wave phenomenon, buckle phenomenon, uneven thickness phenomenon, distortion phenomenon, or leaning phenomenon to one side may occur in the serial material, and the work roll may be severely deformed beyond the elastic range, causing damage to the product. There were many problems, such as being moved out of position or damaged.

An asymmetric rolling system according to the spirit of the present invention for solving the above problems includes a first work roll in contact with a material to be rolled, a second work roll having a second radius larger than the first radius of the first work roll, and a rolling unit that is provided with a driving roll formed above or below the first work roll to contact the first work roll and drive the first work roll, thereby asymmetrically rolling the rolled material; a rolling drive unit that drives the second work roll or the drive roll; A push roll unit in which a plurality of push rolls corresponding to each other in the front and rear directions of the first work roll are arranged at regular intervals along the longitudinal direction of the first work roll to restrain the first work roll in the front and rear directions. (Push Roll unit); A measuring unit that measures the rolled material rolled in the rolling unit; And a resultant force that controls the pressure of the push roll unit to compensate for the deformation of the rolled material according to the measurement value of the rolled material measured by the measuring unit, and presses the first work roll with the push roll unit on both sides. It may include a control unit that controls the plurality of push rolls while maintaining uniformity at the plurality of points where the plurality of push rolls are formed.

Additionally, according to the present invention, the push roll unit includes at least the first work roll, a first idle roll formed to contact the first work roll, and the first guide roll formed to contact the first idle roll. a plurality of the push rolls that rotate in contact with any one of the push rolls; a plurality of movable tables formed to support each of the plurality of push rolls so that the push rolls can rotate freely; And it may include; a plurality of movable table forward and backward devices formed to allow each of the plurality of movable tables to move forward and backward.

Additionally, according to the present invention, the movable table forward/backward device may be formed of at least one of a drive motor, a hydraulic cylinder, a pneumatic cylinder, and an electric actuator.

In addition, according to the present invention, the control unit includes a detection unit that detects the shape or physical properties of the rolled material through data measured by the measurement unit; a calculation unit that calculates a restraining pressure applied by the plurality of push rolls in the direction of the first work roll at each point where the plurality of push rolls are formed, according to the shape of the rolled material detected by the detection unit; and an operation unit that controls each of the push rolls using the pressing force of the plurality of push rolls calculated by the calculation unit.

In addition, according to the present invention, the control unit applies a 1-1 pressure applied to the 1-1 push roll formed in front of an arbitrary first point in the longitudinal direction of the first work roll in the direction of the first work roll. and controlling the 2-1 push roll formed at the rear to restrain the first point with a first restraining force that is the sum of the 2-1 pressure applied in the direction of the first work roll, in the longitudinal direction of the first work roll. The 2-1 push roll formed in front of the second point spaced apart from the first point presses the 2-1 pressure in the direction of the first work roll, and the 2-2 push roll formed behind the first work roll applies pressure to the first work roll. The second point may be controlled to be restrained by a second restraining force that is the sum of the 2-2 pressure applied in the roll direction, and the first binding force and the second binding force may be controlled to be equal.

Additionally, according to the present invention, a first idle roll is formed in front of the first work roll to contact the first work roll and support the first work roll; a second idle roll formed behind the first work roll to support the first work roll in a direction corresponding to the first idle roll; a first guide roll formed in front of the first idle roll to contact the first idle roll and support the first idle roll; and a second guide roll formed at the rear of the second idle roll so as to contact the second idle roll and support the second idle roll.

In addition, according to the present invention, the cassette device includes: a cassette body supporting the first work roll so that the first work roll can freely rotate; and a push bar installed on the front and rear sides of the cassette body to which the push roll unit is coupled.

Additionally, according to the present invention, the measuring unit can measure the tension of the rolled material.

In addition, according to the present invention, the measuring unit may include a plurality of tension meters formed at regular intervals to measure a plurality of positions spaced at regular intervals along the width direction of the rolled material.

Additionally, according to the present invention, the tension meter can be formed on an extension of the point where the plurality of push rolls are formed.

In addition, according to the present invention, the rolling drive unit drives the driving roll and the second work roll such that the first rotational speed of the first work roll is equal to the second rotational speed of the second work roll. It can be driven.

In addition, according to the present invention, the rolling driving unit has a fourth radius of the driving roll such that the first rotational speed of the first work roll is equal to the second rotational speed of the second work roll. The second radius of the second work roll is equal to each other, and the drive roll and the second work roll can be driven at the same rotational angular speed.

Meanwhile, the asymmetric rolling method according to the spirit of the present invention for solving the above problem includes a first work roll in contact with the material to be rolled, and a second work roll having a second radius larger than the first radius of the first work roll. and a rolling step of asymmetrically rolling the material to be rolled by a rolling unit including a driving roll formed above or below the first work roll so as to contact the first work roll and drive the first work roll; A measuring step of measuring the rolled material rolled in the rolling section with a measuring section formed at a rear end of the rolling section; And a resultant force that controls the pressure of the push roll unit to compensate for the deformation of the rolled material according to the measurement value of the rolled material measured in the measurement step, and presses from both sides of the first work roll with the push roll unit. It may include a control step of controlling the plurality of push rolls while maintaining uniformity at a plurality of points where the plurality of push rolls are formed.

In addition, according to the present invention, the control step includes a detection step of detecting the shape of the rolled material through the data measured in the measurement step; A calculation step of calculating a confining pressure applied by the plurality of push rolls in the direction of the first work roll at each point where the plurality of push rolls are formed, according to the shape of the rolled material detected in the detection step; and an operation command step of controlling each of the push rolls using the pressing force of the plurality of push rolls calculated in the calculation step.

In addition, according to the present invention, in the control step, the 1-1 push roll formed in front of an arbitrary first point in the longitudinal direction of the first work roll presses the first work roll in the direction of the first work roll. The first point is controlled to be restrained by a first restraining force that is the sum of the pressure and the 2-1 pressure applied by the 2-1 push roll formed at the rear in the direction of the first work roll, and the longitudinal direction of the first work roll The 2-1 push roll formed in front of the second point spaced apart from the first point presses the 2-1 pressure in the direction of the first work roll, and the 2-2 push roll formed behind the first work roll applies pressure to the first work roll. The second point may be controlled to be restrained by a second restraining force that is the sum of the 2-2 pressures applied in the direction of the work roll, and the first binding force and the second binding force may be controlled to be equal.

In addition, according to the present invention, in the measurement step, the plurality of rolled materials on the extension line of the point where the plurality of push rolls are formed are formed through a plurality of measuring parts formed at regular intervals along the width direction of the rolled material. Position can be measured.

According to the various embodiments of the present invention as described above, the small diameter roll can be restrained in the front-back direction, and it is possible to firmly respond to the reaction force generated on the small-diameter roll while restrained in the front-back direction.

In addition, by restraining the small diameter roll, deformation in the front and rear direction can be minimized, and by measuring the physical properties or shape of the rolled material in real time and reflecting it at each point, it is possible to actively respond to the deformation of the small diameter roll, and through this, parts It can increase the strength and durability of the plate, prevent defects, and have the effect of precisely controlling the shape of the produced plate. Of course, the scope of the present invention is not limited by this effect.

1 is a schematic diagram showing an asymmetric rolling system according to an embodiment of the present invention.
Figure 2 is a perspective view showing a rolling unit, a rolling driving unit, and a push roll unit of an asymmetric rolling system according to an embodiment of the present invention.
Figure 3 is a side view showing a rolling unit and a push roll unit of an asymmetric rolling system according to an embodiment of the present invention.
Figure 4 is a diagram showing a control unit of an asymmetric rolling system according to an embodiment of the present invention.
Figure 5 is a driving concept diagram showing the driving of the push roll unit of the asymmetric rolling system according to an embodiment of the present invention.
Figure 6 is a perspective view showing a cassette device of an asymmetric rolling system according to an embodiment of the present invention.
Figure 7 is a perspective view showing the position of the tension meter of the asymmetric rolling system according to an embodiment of the present invention.
Figures 8 and 9 are flow charts showing an asymmetric rolling method according to an embodiment of the present invention.

Hereinafter, various preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

The embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art, and the following examples may be modified into various other forms, and the scope of the present invention is as follows. It is not limited to the examples. Rather, these embodiments are provided to make the present disclosure more faithful and complete and to fully convey the spirit of the present invention to those skilled in the art. Additionally, the thickness and size of each layer in the drawings are exaggerated for convenience and clarity of explanation.

The terms used herein are used to describe specific embodiments and are not intended to limit the invention. As used herein, the singular forms include the plural forms unless the context clearly indicates otherwise. Additionally, when used herein, “comprise” and/or “comprising” means specifying the presence of stated features, numbers, steps, operations, members, elements and/or groups thereof. and does not exclude the presence or addition of one or more other shapes, numbers, operations, members, elements and/or groups.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will now be described with reference to drawings that schematically show ideal embodiments of the present invention. In the drawings, variations of the depicted shape may be expected, for example, depending on manufacturing technology and/or tolerances. Accordingly, embodiments of the present invention should not be construed as being limited to the specific shape of the area shown in this specification, but should include, for example, changes in shape resulting from manufacturing.

Figure 1 is a schematic diagram showing an asymmetric rolling system according to an embodiment of the present invention, and Figures 2 and 3 show the rolling unit 100, the rolling drive unit 200, and the push roll unit 300 of the asymmetric rolling system of the present invention. is a perspective view and a side view showing, and Figure 4 is a diagram showing the control unit 500 of the asymmetric rolling system according to an embodiment of the present invention.

First, as shown in FIG. 1, the asymmetric rolling system according to some embodiments of the present invention largely includes a rolling unit 100, a rolling driving unit 200, a push roll unit 300, and a measuring unit 400. and a control unit 500.

As shown in FIG. 1, the rolling unit 100 includes a first work roll WR1 in contact with the rolled material 1 and a first work roll WR1 so as to asymmetrically roll the rolled material 1. A second work roll (WR2) having a second radius greater than the first radius of, and a second work roll (WR1) of the first work roll (WR1) so as to be in contact with the first work roll (WR1) to drive the first work roll (WR1). It may include a driving roll (DR) formed above or below.

For example, the first work roll WR1 may be a rolling roll in contact with the first surface 1a, that is, the upper surface, of the panel-shaped rolled material 1.

The second work roll (WR2) corresponding to the first work roll (WR1) is in contact with the second surface (1b), that is, the lower surface, of the rolled material (1) and is designed to asymmetrically roll the rolled material (1). 1 It may be a rolling roll having a second radius (R2) larger than the first radius (R1) of the work roll (WR1).

In the drawing, the first work roll (WR1) is located above the rolled material (1), and the second work roll (WR2) is located below the rolled material (1), but the first work roll (WR2) is not necessarily limited thereto. It is also possible for the roll WR1 to be positioned below the rolled material 1 and the second work roll WR2 to be positioned above the rolled material 1. In addition, the first work roll WR1 is positioned below the rolled material 1. It is also possible that the second work roll WR2 is located on one side of (1) and the second work roll WR2 is located on the other side of the rolled material (1).

Therefore, the rolled material 1 can be rolled thinly from the first thickness T to the second thickness t while passing between the first work roll WR1 and the second work roll WR2, and at this time, Since the radii of the two rolling rolls for rolling the rolled material (1) are different from each other, the shear strain acting on the rolled material (1) is different from each other, so that the structure of the material becomes more dense, and as a result, the physical properties of the material are superior. It can happen.

This improvement in the physical properties of the material may vary depending on the process environment, such as the type, thickness, specification, or process temperature of the rolled material (1), and the process environment, such as the type, thickness, specification, or process temperature of the rolled material (1). Accordingly, the diameters of the first work roll (WR1) and the second work roll (WR2) may be optimized and designed.

Meanwhile, for example, the driving roll DR is a type of auxiliary roll formed on or below the first work roll WR1 so as to be in contact with the first work roll WR1 and drive the first work roll WR1, It may be driven by the rolling driver 200.

As shown in FIGS. 2 and 3, the asymmetric rolling system according to an embodiment of the present invention includes a first idle roll (IR1), a second idle roll (IR2), a first guide roll (GR1), and a second idle roll (IR1). A guide roll (GR2) may be further included.

As shown in FIG. 3, the first idle roll (IR1) is formed in front of the first work roll (WR1) so as to contact the first work roll (WR1) and support the first work roll (WR1). The second idle roll IR2 may be formed at the rear of the first work roll WR1 to support the first work roll WR1 in a direction corresponding to the first idle roll IR1.

More specifically, the first idle roll (IR1) and the second idle roll (IR2) are in contact with the first work roll (WR1) at the entrance and exit directions to support the first work roll (WR1). It may be a type of auxiliary rolling roll formed in front and behind the roll WR1.

Here, the first idle roll (IR1) and the second idle roll (IR2) are formed to be spaced apart from the driving roll (DR) at a predetermined distance, and the first work roll (WR1) is positioned so as not to interfere with the rolling path of the rolled material (1). It may be a rolling roll having a radius smaller than the radius of .

The height of the central axis of the first idle roll (IR1) and the second idle roll (IR2) is the same as the height of the central axis of the first work roll (WR1), so that the first idle roll (IR1) is And the pressure applied to the second idle roll (IR2) may be transmitted to the first work roll (WR1).

As shown in FIG. 3, the first guide roll (GR1) is formed in front of the first idle roll (IR1) so as to contact the first idle roll (IR1) and support the first idle roll (IR1). The second guide roll GR2 may be formed at the rear of the second idle roll IR2 so as to be in contact with the second idle roll IR2 and support the second idle roll IR2.

The first guide roll (GR1) and the second guide roll (GR2) each have a central axis height higher than the central axis height of the first work roll (WR1), so that the rolled material (1) can be moved below. Space can be formed. In addition, as the space at the bottom becomes larger, the size of the first guide roll (GR1) and the second guide roll (GR2) can be increased, and the first idle roll (IR1), the second idle roll (IR2) and The first work roll (WR1) can be more firmly restrained.

As shown in FIGS. 1 and 2, the rolling drive unit 200 is a device that drives the second work roll WR2 or the drive roll DR.

For example, the rolling drive unit 200 is a device that drives the second work roll (WR2) and the drive roll (DR), and includes a first actuator (210) including a motor or power transmission device that drives the first work roll (WR1). ), a second actuator 220 and a first actuator 210 including a motor or power transmission device that drives the second work roll WR2, and a drive control unit 230 that controls the second actuator 220 may include.

In addition, although not shown, the first actuator 210 and the second actuator 220 may be configured in various ways, such as gear combinations, belt pulley combinations, chain sprocket wheel combinations, wire pulley combinations, movable table and threaded rod combinations, in addition to motors. Power transmission devices may be applied.

The rolling drive unit 200 operates the driving roll DR and the second work roll WR2 so that the first rotational speed of the first work roll WR1 is equal to the second rotational speed of the second work roll WR2. can be operated respectively.

In addition, the rolling drive unit 200 has a fourth radius of the drive roll DR so that the first rotational speed of the first work roll WR1 is equal to the second rotational speed of the second work roll WR2. 2 The second radius of the work roll WR2 is equal to each other, and the driving roll DR and the second work roll WR2 can be driven at the same rotational angular speed in the same or opposite direction.

The meaning of "same" here is not only complete equality, but also identity within the process margin due to errors inevitably contained in the nature of the mechanical device, even though the operator controlled the signal from the control unit with the intention of making the angular velocities of both rolls the same. It should be understood as the identity of the substantive meaning included. The “same” rotational speed of the first work roll (WR1) and the second work roll (WR2) may be applied with the same meaning hereinafter.

However, in other embodiments of the present invention, the first rotational speed of the first work roll WR1 and the second rotational speed of the second work roll WR2 may not be the same for various reasons. For example, in order to create a difference in shear strain at the top and bottom of the rolled material 1 or to control the bending of the rolled material 1, the first rotational speed and the second rotational speed are slightly different, For example, it may be driven to have a difference within a 10% range.

As shown in Figures 1 to 3, the push roll unit (Push Roll unit) 300 is connected to each other in the front and rear direction of the first work roll (WR1) so as to restrain the first work roll (WR1) in the front and rear direction. It may include a plurality of push rolls formed in correspondence.

For example, the push roll formed in front of the first work roll (WR1) includes a 1-1 push roll, a 1-2 push roll, and a 1-n push roll from one side of the first work roll (WR1). The push roll, which may be arranged at regular intervals and formed at the rear of the first work roll (WR1), includes a 2-1 push roll, a 2-2 push roll, and a 2-1 push roll from one side of the first work roll (WR1). The 2-n push roll may be arranged to correspond to the 1-n push roll.

Specifically, the push roll unit 300 may include a push roll 33, a movable table 32, and a movable table forward and backward device 31.

The push rolls 33 are formed in plural pieces, and are formed to be in contact with the first work roll WR1, the first idle roll IR1 formed to be in contact with the first work roll WR1, and the first idle roll IR1. It may be formed to roll and rotate in contact with any one of the first guide rolls GR1.

For example, the push roll 33 may include a ball-shaped support body formed on the outside of the first guide roll GR1 and the second guide roll GR2 and rolling in the direction of the first work roll WR1. .

At this time, the push rolls 33 may be arranged at regular intervals along the longitudinal direction of the first work roll WR1. As described above, the push roll unit 300 has a 1-1 push roll, a 1-2 push roll, and a 1-n push roll formed in the entrance direction of the rolled material 1, and the rolled material 1 A 2-1 push roll, a 2-2 push roll, and a 2-n push roll may be formed to correspond to the 1-n push roll in the exit direction. At this time, the 1-1 push roll, the 1-2 push roll, and the 1-n push roll may be arranged to be spaced apart at regular intervals.

The movable table 32 may be formed in plural pieces to each support a plurality of push rolls 33 so that the push rolls 33 can rotate freely.

The movable table forward and backward device 31 may be formed in plural pieces so as to move the plurality of movable tables 32 forward and backward, respectively.

The forward and backward device 31 is a device that drives each of the plurality of movable tables 32, and may be formed of at least one of a drive motor, a hydraulic cylinder, a pneumatic cylinder, and an electric actuator. However, it is not necessarily limited to this, and various types of forward and backward devices capable of stretching and contracting can be applied.

Here, two push rolls 33 can be installed on the upper and lower parts of the movable table 32 so that the movable table 32 can stably press the first guide roll GR1 when pressed in the front-back direction. , joints (not shown), etc. may be installed on the movable table 32 so that the pressing force can be distributed equally to each of the push rolls 33.

Therefore, for example, the movable table 92 can be advanced through the forward and backward device 31 of the push roll unit 300 that requires adjustment, and the corresponding push roll 33 is advanced while the first guide roll ( As a specific part of GR1) is pressed in the front-back direction, a specific part of the first idle roll IR1 and a specific part of the first work roll WR1 may also be pressed.

Accordingly, the X-axis reaction force of the first work roll WR1 can be precisely adjusted to be uniform throughout. Therefore, by precisely controlling the X-axis reaction force, the rolling load acting on the rolled material 1 can be precisely adjusted to produce a high-quality product.

As shown in FIG. 1, the measuring unit 400 is a device that measures the rolled material 1 rolled in the rolling unit 100.

The measuring part 400 is formed between the rolling part 100 and the uncoiler that rewinds the rolled material 1, and before the rolled material 1, which is rolled and moves, is wound around the uncoiler, the rolled material 100 is measured. It may include a device that measures physical properties or shape.

Specifically, the measuring unit 400 is a device that measures the tension of the rolled material 1, and the rolled material 1 moves around a part of the measuring unit 400 to measure the tension formed in the rolled material 1. You can. For example, the measuring unit 400 is a tension meter ( 410) may be included.

Thus, the tension at a plurality of points on the same line along the width direction of the rolled material 1 can be detected.

Figure 7 is a perspective view showing the position of the tension meta 410 of the asymmetric rolling system according to an embodiment of the present invention.

The tension meta 410 may be formed on an extension of the point where the plurality of push rolls 33 are formed. For example, as shown in FIG. 7, the tension meta 410 may be formed along the point where the push roll unit 300 is formed.

Therefore, the tension value of the rolled material 1 measured by the tension meter 410 is controlled through the control unit 500, which will be described later, by controlling the plurality of push rolls 33 of the push roll unit 300 formed on the same line along the rolling direction. can do.

As shown in FIGS. 1 and 4 , the control unit 500 may control the pressure of the push roll unit 300 according to the measured value of the rolled material 1 measured by the measuring unit 400.

For example, the control unit 500 controls the pressure of the push roll unit 300 to compensate for the deformation of the rolled material 1 according to the measurement value of the rolled material 1 measured by the measuring unit 400, and pushes. The plurality of push rolls 33 can be controlled while maintaining the resultant force applied from both sides of the first work roll WR1 by the roll unit 300 to be uniform at a plurality of points where the plurality of push rolls 33 are formed.

Specifically, the control unit 500 may include a detection unit 510, a calculation unit 520, and an operation unit 530.

The detection unit 510 can detect the shape or physical properties of the rolled material 1 through the data measured by the measurement unit 400.

Specifically, the detection unit 510 stores measured data values at each point of the rolled material 1 through the measuring unit 400, and can confirm the shape of the rolled material 1 through the data values. .

For example, when the data values are detected to be the same along the width direction of the rolled material (1), the width direction shape of the rolled material (1) may be detected as the same shape, and the data values are the same as the rolled material (1). When detected differently depending on the width direction, the width direction shape of the rolled material 1 may be detected as a different shape. At this time, the width direction shape of the rolled material 1 can be detected through the different data values.

In addition, as rolling is continuously performed in the rolling unit 100, the data value of the rolled material 1 is continuously measured by the detection unit 510 to determine the shape change of the rolled material 1 in real time. It can be detected.

For example, when the detection unit 510 detects that the tension at the center and the tension at the edges are different in the width direction of the rolled material 1, the cross-sectional shape of the rolled material 1 in the width direction is such that the central portion is convex downward or upward. It can be judged that it has been formed.

If the width direction shape of the rolled material 1 is different, the calculation unit 520 may control the push roll unit 300 to control the width direction shape of the rolled material 1 to be uniform. Specifically, the calculation unit 520 moves the plurality of push rolls in the direction of the first work roll WR1 at each point where the plurality of push rolls are formed, according to the shape of the rolled material 1 detected by the detection unit 510. The confining pressure applied can be calculated.

For example, as described above, the detection unit 510 detects the tension of the center portion and the tension of the edge portion in the width direction of the rolled material 1 to be different, so that the cross-sectional shape of the rolled material 1 in the width direction is such that the central portion is downward or upward. If it is determined that it is formed in a convex shape, the calculation unit 520 compares the tension of the center portion and the edge portion to calculate the pressing force of the push roll unit 300 corresponding to the center portion and the push roll unit 300 corresponding to the edge portion. can do.

That is, the calculation unit 520 calculates the pressing force exerted by the first push roll formed on the entrance side and the second push roll formed on the exit side of the push roll unit 300 corresponding to the center portion and the edge portion at a uniform restraining pressure. It can be calculated.

The operation unit 530 may control the operation of each push roll using the pressing force of the plurality of push rolls calculated by the calculation unit 520.

Figure 5 is a driving concept diagram showing the driving of the push roll unit 300 of the asymmetric rolling system according to an embodiment of the present invention.

The control unit 500 controls the first push roll 33 formed in front of an arbitrary first point P1 in the longitudinal direction of the first work roll WR1 to press the first work roll WR1 in the direction. The first restraining force ( (F1-1)+(F2-1)) can be controlled to constrain the first point (P1).

In addition, the control unit 500 controls the 2-1 push roll 33 formed in front of the second point (P2), which is spaced apart from the first point (P1) in the longitudinal direction of the first work roll (WR1), to operate the first work roll (WR1). A 2-1 pressure (F2-1) pressing in the direction of the roll (WR1) and a 2-2 pressure (F2) pressed by the 2-2 push roll (33) formed at the rear in the direction of the first work roll (WR1) The second point (P2) can be controlled to be constrained by the second binding force ((F1-2)+(F2-2)), which is the sum of -2).

At this time, the control unit 500 can control the first binding force ((F1-1) + (F2-1)) and the second binding force ((F1-2) + (F2-2)) to be the same.

For example, as shown in FIG. 5, the second point (P1-2) is the center, the first point (P1-1) is the edge, and the 1-2 push roll 312 formed at the entrance of the center The pressing force is lowered and the pressing force of the 2-2 push roll 322 unit formed on the exit side is increased, the pressing force of the 1-1 push roll 311 formed on the entrance side of the edge is increased, and the 2-1 push roll unit formed on the exit side is increased ( 321) can be controlled to lower the pressing force, so that the binding force at each point can be kept uniform, and by controlling from both sides, the pressure received at each point can be greater than the applied pressure, and the pressure of the rolled material 1 can be increased. Transformation can be reflected and controlled in real time.

In addition, the pressing force of the 2-2 push roll 322 unit formed on the exit side of the central part is increased, and the pressing force of the 1-1 push roll 311 formed on the entering side of the edge part is controlled to increase, so that the binding force at each point is increased. All can be kept uniform, or the pressing force of the 1-2 push roll 312 formed on the entrance side of the central part can be controlled to lower and the pressing force of the 2-1 push roll unit 321 formed on the exit side of the edge part can be controlled to lower it. , the binding force at each point can be kept uniform.

Therefore, the first work roll (WR1) can receive a uniform restraining force at all points along the longitudinal direction, and the deformation of the first work roll (WR1) can be prevented while minimizing the influence of the pressing force of adjacent push rolls. .

Figure 6 is a perspective view showing the cassette device 600 of the asymmetric rolling system according to an embodiment of the present invention.

The asymmetric rolling system according to an embodiment of the present invention may further include a cassette device 600.

As shown in FIG. 6, the cassette device 600 is in contact with the first work roll WR1 so as not to interfere with the linear movement path of the rolled material 1 and supports the first work roll WR1 in the front and rear directions. May include devices.

The cassette device 600 is a structure that is in contact with the first work roll WR1 and supports the first work roll WR1 in the front-back direction. This cassette device 80 supports the first work roll WR1 in the front-back direction. In addition to support, the shape of the rolled material 1 can be precisely controlled by supporting the push roll unit 300 so that the force of the reaction force supported for each part can be precisely adjusted.

Specifically, the cassette device 600 is installed on the front and rear sides of the cassette body 610 and the cassette body 610, which supports the first work roll WR1 so that the first work roll WR1 can rotate freely, thereby forming a push roll. The unit 300 may include a push bar (620) to which it is coupled.

The cassette body 610 may be formed so that the first idle roll (IR1) and the second idle roll (IR2) can freely rotate in front and behind the first work roll (WR1), and the first guide roll (GR1) and the second guide roll (GR2) is formed to be free to rotate on the sides of the first idle roll (IR1) and the second idle roll (IR2), respectively, or to be free to rotate in the circumferential direction of the drive roll (DR). can be formed.

In addition, the push bar 620 supports at least one of the first work roll (WR1), the first idle roll (IR1), and the first guide roll (GR1) in the front-back direction or the circumferential direction of the drive roll (DR). It is possible to support a plurality of push roll units 300 arranged at regular intervals.

Here, the cassette body 610 and push bar 620 are structures with sufficient strength and durability to withstand component load and rolling load, and are an assembly made by assembling various shapes and numbers of vertical members, horizontal members, panel members, etc. Alternatively, it may be an integrated injection structure.

However, the shape or structure of the cassette body 610 and the push bar 620 is not necessarily limited to the drawings, and various types of cassette frame structures to withstand component loads and rolling loads can be applied.

Figures 8 and 9 are flow charts showing an asymmetric rolling method according to an embodiment of the present invention.

As shown in FIG. 8, the asymmetric rolling method according to the present invention may include a rolling step (S100), a measuring step (S200), and a control step (S300).

The rolling step (S100) includes a first work roll (WR1) in contact with the material to be rolled (1), a second work roll (WR2) having a second radius larger than the first radius of the first work roll (WR1), To the rolling unit 100 including a drive roll (DR) formed above or below the first work roll (WR1) so as to contact the first work roll (WR1) and drive the first work roll (WR1). This is the step of asymmetrically rolling the rolled material (1).

In the rolling step (S100), the first rotational speed of the first work roll (WR1) is rotated so that it is equal to the second rotational speed of the second work roll (WR2) having a different radius from that of the first work roll (WR1). The material to be rolled (1) can be rolled asymmetrically.

The measuring step (S200) is a step of measuring the rolled material 1 rolled in the rolling unit 100 by the measuring unit 400 formed at the rear end of the rolling unit 100.

The measuring step (S200) is a step of measuring the physical properties or shape of the rolled material 100 before the rolled material 1, which is rolled and moves, is wound around the uncoiler. For example, the measuring step (S200) is a step of measuring the tension at a plurality of points along the width direction of the rolled material (1).

Specifically, in the measuring step (S200), a plurality of measuring parts 400 formed at regular intervals along the width direction of the rolled material 1 are used to measure a position on an extension line of a point where a plurality of push rolls 33 are formed. Multiple positions of the rolled material (1) can be measured.

The control step (S300) controls the pressure of the push roll unit 300 to compensate for the deformation of the rolled material (1) according to the measured value of the rolled material (1) measured in the measurement step (S200), and the push roll This is a step of controlling the plurality of push rolls 33 while maintaining the resultant force applied by the unit 300 from both sides of the first work roll WR1 to be uniform at a plurality of points where the plurality of push rolls 33 are formed.

Specifically, the control step (S300) may include a detection step (S310), a calculation step (S320), and an operation command step (S33).

The detection step (S310) is a step of detecting the shape of the rolled material (1) through the data measured in the measurement step (S200).

Specifically, the detection step (S310) stores measured data values at each point of the rolled material 1 through the measuring unit 400, and detects the shape of the rolled material 1 through the data values. It's a step. At this time, in the detection step (S310), as rolling is continuously performed in the rolling unit 100, the shape change of the rolled material 1 can be detected in real time by continuously measuring the data value of the rolled material 1. there is.

In the calculation step (S320), according to the shape of the rolled material 1 detected in the detection step (S310), the plurality of push rolls 33 are formed at each point where the plurality of push rolls 33 are formed. The first work roll WR1 ) This is the step of calculating the confining pressure in the direction.

In the calculation step (S320), the first push roll formed on the entrance side and the second push roll formed on the exit side of the push roll unit 300 corresponding to the center and edge of the rolled material 1 are each pressed at the same restraining pressure. This is the step of calculating the pressing force.

The operation command step S330 is a step of controlling each push roll 33 using the pressing force of the plurality of push rolls 33 calculated in the calculation step S320.

For example, in the control step (S300), the 1-1 push roll 33 formed in front of an arbitrary first point (P1) in the longitudinal direction of the first work roll (WR1) moves in the direction of the first work roll (WR1). The first pressure is the sum of the 1-1 pressure (F1-1) that presses and the 2-1 pressure (F2-1) that the 2-1 push roll (33) formed at the rear presses in the direction of the first work roll (WR1). 1 The first point (P1) can be controlled to be constrained by the constraint force ((F1-1)+(F2-1)).

In addition, in the control step (S300), the 2-1 push roll 33 formed in front of the second point (P2) spaced apart from the first point (P1) in the longitudinal direction of the first work roll (WR1) is the first A 2-1 pressure (F2-1) pressing in the direction of the work roll (WR1) and a 2-2 pressure (F2-1) pressed in the direction of the first work roll (WR1) by the 2-2 push roll (33) formed at the rear The second point (P2) can be controlled to be constrained by the second constraining force ((F1-2)+(F2-2)), which is the sum of F2-2).

At this time, the control step (S300) is to control the push roll unit 300 so that the first binding force ((F1-1) + (F2-1)) and the second binding force ((F1-2) + (F2-2)) are the same. can be controlled.

Therefore, the first work roll (WR1) can receive a uniform restraining force at all points along the longitudinal direction, and the deformation of the first work roll (WR1) can be prevented while minimizing the influence of the pressing force of adjacent push rolls. .

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims.

1: Rolled material
1a: side 1
1b: side 2
WR1: 1st work role
WR2: Second work role
DR: driving roll
IR1: 1st idle roll
IR2: 2nd idle roll
GR1: 1st guide roll
GR2: 2nd guide roll
100: rolling part
200: rolling driving unit
300: Push roll unit
310: first push roll unit
320: second push roll unit
31: Push roll
32: Movable table
33: Push roll
400: Measuring unit
410: Tension meta
500: Control unit
600: Cassette device
610: Cassette body
620: Push bar

Claims (17)

A first work roll in contact with the rolled material, a second work roll having a second radius larger than the first radius of the first work roll, and a first work roll that is in contact with the first work roll to drive the first work roll. a rolling unit provided with a driving roll formed above or below the first work roll to asymmetrically roll the rolled material;
a rolling drive unit that drives the second work roll or the drive roll;
A push roll unit in which a plurality of push rolls corresponding to each other in the front and rear directions of the first work roll are arranged at regular intervals along the longitudinal direction of the first work roll to restrain the first work roll in the front and rear directions. (Push Roll unit);
A measuring unit that measures the rolled material rolled in the rolling unit; and
The pressure of the push roll unit is controlled to compensate for the deformation of the rolled material according to the measurement value of the rolled material measured by the measuring unit, and the resultant force pressing from both sides of the first work roll with the push roll unit is a control unit that controls the plurality of push rolls while maintaining uniformity at a plurality of points where the plurality of push rolls are formed;
An asymmetric rolling system comprising: According to claim 1,
The push roll unit is,
A plurality of the pushes that roll and rotate in contact with at least one of the first work roll, the first idle roll formed to contact the first work roll, and the first guide roll formed to contact the first idle roll role;
a plurality of movable tables formed to support each of the plurality of push rolls so that the push rolls can rotate freely; and
A plurality of movable table forward and backward devices are formed to each move the plurality of movable tables forward and backward;
An asymmetric rolling system comprising: According to claim 2,
The movable table forward and backward device,
An asymmetric rolling system formed by at least one of a drive motor, a hydraulic cylinder, a pneumatic cylinder, and an electric actuator. According to claim 1,
The control unit,
A detection unit that detects the shape or physical properties of the rolled material through the data measured by the measurement unit;
a calculation unit that calculates a restraining pressure applied by the plurality of push rolls in the direction of the first work roll at each point where the plurality of push rolls are formed, according to the shape of the rolled material detected by the detection unit; and
an operation unit controlling each of the push rolls using the pressing force of the plurality of push rolls calculated by the calculation unit;
An asymmetric rolling system comprising: According to claim 1,
The control unit,
A 1-1 push roll formed in front of an arbitrary first point in the longitudinal direction of the first work roll exerts pressure in the direction of the first work roll, and a 2-1 push roll formed behind the first work roll exerts pressure in the direction of the first work roll. Controlling the first point to be restrained by a first restraining force that is the sum of the 2-1 pressure pressing in the direction of the first work roll,
A 2-1 push roll formed in front of a second point spaced apart from the first point in the longitudinal direction of the first work roll applies a 2-1 pressure that presses in the direction of the first work roll, and a second pressure formed behind the first work roll. -2 Controlling the push roll to restrain the second point with a second restraining force that is the sum of the 2-2 pressure pressing in the direction of the first work roll,
An asymmetric rolling system wherein the first restraining force and the second restraining force are controlled to be uniform. According to claim 1,
a first idle roll formed in front of the first work roll to contact the first work roll and support the first work roll;
a second idle roll formed behind the first work roll to support the first work roll in a direction corresponding to the first idle roll;
a first guide roll formed in front of the first idle roll to contact the first idle roll and support the first idle roll; and
a second guide roll formed at the rear of the second idle roll to contact the second idle roll and support the second idle roll;
An asymmetric rolling system further comprising: According to claim 1,
a cassette device that contacts the first work roll and supports the first work roll in the front-back direction so as not to interfere with the linear movement path of the rolled material;
An asymmetric rolling system further comprising: According to claim 7,
The cassette device,
a cassette body supporting the first work roll so that the first work roll can rotate freely; and
Push bars installed on the front and rear sides of the cassette body to which the push roll unit is coupled;
An asymmetric rolling system comprising: According to claim 1,
The measuring unit,
An asymmetric rolling system that measures the tension of the rolled material. According to clause 9,
The measuring unit,
A plurality of tension meters are formed at regular intervals to measure a plurality of positions spaced at regular intervals along the width direction of the rolled material;
An asymmetric rolling system comprising: According to claim 10,
The tension meta is,
An asymmetric rolling system formed on an extension of a point where a plurality of the push rolls are formed. According to claim 1,
The rolling drive unit,
An asymmetric rolling system in which the drive roll and the second work roll are each driven so that the first rotational speed of the first work roll becomes the same as the second rotational speed of the second work roll. According to claim 11,
The rolling drive unit,
The fourth radius of the drive roll is equal to the second radius of the second work roll so that the first rotational speed of the first work roll is equal to the second rotational speed of the second work roll. and driving the drive roll and the second work roll at the same rotational angular speed. A first work roll in contact with the rolled material, a second work roll having a second radius larger than the first radius of the first work roll, and a first work roll that is in contact with the first work roll to drive the first work roll. A rolling step of asymmetrically rolling the material to be rolled with a rolling unit including a drive roll formed above or below the first work roll so that the material to be rolled is asymmetrically rolled;
A measuring step of measuring the rolled material rolled in the rolling section with a measuring section formed at a rear end of the rolling section; and
The pressure of the push roll unit is controlled to compensate for the deformation of the rolled material according to the measurement value of the rolled material measured in the measurement step, and the resultant force pressing from both sides of the first work roll with the push roll unit is A control step of controlling the plurality of push rolls while maintaining uniformity at a plurality of points where the plurality of push rolls are formed;
Including, asymmetric rolling method. According to claim 14,
The control step is,
A detection step of detecting the shape of the rolled material through the data measured in the measurement step;
A calculation step of calculating a confining pressure applied by the plurality of push rolls in the direction of the first work roll at each point where the plurality of push rolls are formed, according to the shape of the rolled material detected in the detection step; and
An operation command step of controlling each of the push rolls using the pressing force of the plurality of push rolls calculated in the calculation step;
Including, asymmetric rolling method. According to claim 14,
In the control step,
A 1-1 push roll formed in front of an arbitrary first point in the longitudinal direction of the first work roll exerts pressure in the direction of the first work roll, and a 2-1 push roll formed behind the first work roll exerts pressure in the direction of the first work roll. Controlling the first point to be restrained by a first restraining force that is the sum of the 2-1 pressure pressing in the direction of the first work roll,
A 2-1 push roll formed in front of a second point spaced apart from the first point in the longitudinal direction of the first work roll applies a 2-1 pressure that presses in the direction of the first work roll, and a second pressure formed behind the first work roll. -2 Controlling the push roll to restrain the second point with a second restraining force that is the sum of the 2-2 pressure pressing in the direction of the first work roll,
An asymmetric rolling method wherein the first binding force and the second binding force are controlled to be equal. According to claim 14,
In the measurement step,
An asymmetric rolling method of measuring the positions of a plurality of the rolled materials on an extension line of a point where the plurality of push rolls are formed through a plurality of measuring parts formed at regular intervals along the width direction of the rolled material.

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