KR20200075432A - Rolling mill - Google Patents

Abstract

The present invention relates to a method and an apparatus for reducing the load deviation of left and right sides of a rolling mill, that is, a differential load. The present invention relates to a method and an apparatus for removing elements which cause a differential load in order to solve operational and quality problems such as left and right mill constant deviations, thickness deviations, rolled plate skewing, and poor delivery quality due to the differential load. More particularly, the present invention provides a means for maintaining operability and ensuring quality by using a device that removes a gap between a housing and a roll bearing affecting the variation of the mill constant and an artificial intelligent (AI) logic control device to keep the deviation of pressure fluctuation of a hydraulic cylinder supporting the weight of a drive transmission spindle affecting the differential load, thereby reducing the deviation of loads on the left and right sides of the rolling mill and constantly keeping the mill constant.

Description

Rolling Mill {ROLLING MILL}

The present invention relates to a rolling mill.

In rolling mills producing thick and thin plates, the thickness of the rolled plate can be determined by various variables including the elastic modulus of the rolling mill, which is defined as the mill constant. The mill constant may vary depending on the condition of the mill equipment, so it is common to measure the mill constant after maintenance repair work such as replacing rolls of the mill.

A work roll choke is connected to both ends of the work rolls that roll the material in the rolling mill, and a liner that replaces wear may be disposed between the housing and the work roll choke. While the material is moving between the work rolls, the housing and the work roll choke can collide, which can cause wear of the liner and cause a change in mill constant. The mill constant can be determined by measuring the amount of deformation of the housing at both ends of the work rolls while applying a constant rolling load while the gap between the work rolls is zero. When the variation of the mill constant measured at both ends of the work rolls increases, quality problems such as variation in thickness of the material, misalignment of the material, and poor mailability may occur.

Japanese Patent Application Publication No. 2003-048005

One of the problems to be achieved by the technical idea of the present invention is to provide a rolling mill capable of preventing various quality problems by minimizing variation in mill constants at both ends of the work rolls of a rolling mill, and a change in bearing capacity of a spindle unit transmitting a driving force to the work rolls. To do it.

Rolling machine according to an embodiment of the present invention, work rolls for rolling a material moving in a first direction or a second direction, connected to both ends of the work rolls in the housing, work roll chokes supporting the work rolls , First cylinders connected to the first side of the work roll chokes, second cylinders connected to the second side of the work roll chokes opposite to the first side, and when the material enters between the work rolls And a control unit controlling the cylinders so that the distance between the housing and the work roll chokes adjacent to the entry direction of the material decreases.

In one embodiment of the present invention, the direction of movement of the material is sensed in one of the first direction and the second direction, and the first direction is a direction from the first side toward the second side and the second The direction may further include a sensor that is a direction from the second side toward the first side.

In one embodiment of the present invention, when the material enters the first direction, the control unit may control the second cylinders to push out the work roll chokes.

In one embodiment of the present invention, the control unit, when the material enters the first direction, the first cylinder and the first so that the distance between the work roll chokes and the housing on the first side is minimized 2 cylinders can be controlled.

In one embodiment of the present invention, when the material enters the second direction, the controller may control the first cylinders to push out the work roll chokes.

In one embodiment of the present invention, the control unit, when the material enters the second direction, the first cylinder and the first so that the gap between the work roll chokes and the housing on the second side is minimized 2 cylinders can be controlled.

In one embodiment of the present invention, the control unit may include artificial intelligence logic that controls the cylinders by receiving at least one of a deviation of the mill constant measured at each of the moving direction of the material and both ends of the work rolls. .

In one embodiment of the present invention, the artificial intelligence logic may control the cylinders such that deviation of the mill constant measured at each end of the work rolls is minimized.

In one embodiment of the present invention, the artificial intelligence logic may control the cylinders such that an angle difference between a rotation axis of the work rolls and a third direction perpendicular to the first direction and the second direction is minimized. .

In one embodiment of the present invention, spindle units connected to the work rolls, drive motors rotating the spindle units so that the work rolls roll the material, and support cylinders supporting the spindle units It may further include.

In one embodiment of the present invention, the control unit detects at least one of the movement speed of the material, the output of the drive motors, and the hydraulic fluctuations of the support cylinders, so that the support cylinders change the support force for supporting the spindle units. The support cylinders can be controlled to minimize this.

The rolling machine according to an embodiment of the present invention, work rolls for rolling a material moving in a first direction or a second direction, spindle units connected to the work rolls, connected to the spindle units, and the spindle units The support cylinder by detecting at least one of drive motors for rotating the work rolls, support cylinders for supporting the spindle units, and the movement speed of the material, the output of the drive motors, and hydraulic fluctuations of the support cylinders They include a control unit for adjusting the support force for supporting the spindle units.

In one embodiment of the present invention, the control unit adjusts the hydraulic pressure of the support cylinders such that the support force is minimized based on at least one of the movement speed of the material, the output of the drive motors, and the hydraulic fluctuations of the support cylinders. May include artificial intelligence logic.

In one embodiment of the present invention, between the housing is connected to both ends of the work rolls, work roll chokes supporting the work rolls, first cylinders connected to the first side of the work roll chokes, and the agent The second cylinders connected to the second side of the work roll chokes opposite to the one side may be further included.

In one embodiment of the present invention, the control unit may control the gaps between the work roll chokes and the housing by controlling the cylinders while the material is moving.

In one embodiment of the present invention, the control unit may control the second cylinders to push the work roll chokes when the material moves in the first direction from the first side toward the second side. .

In one embodiment of the present invention, the control unit may control the first cylinders to push the work roll chokes when the material moves in the second direction from the second side toward the first side. .

In the rolling mill according to the technical concept of the present invention, by moving the work roll chokes by using a cylinder connected to the work roll chokes at both ends of the work rolls, the gap between the work roll chokes and the housing is adjusted to control the mill constant deviation across the work rolls. Can be minimized. Therefore, it is possible to prevent various quality problems caused by variations in wheat constant. In addition, it is possible to determine the hydraulic pressure of the support cylinder supporting the spindle unit connecting the work roll choke and the drive motor so that the change in the support force of the support cylinder is minimized. In addition, in one embodiment of the present invention, by using artificial intelligence logic, it is possible to efficiently minimize the mill constant deviation and the change in the support force of the support cylinder.

Various and beneficial advantages and effects of the present invention are not limited to the above, and will be more readily understood in the course of describing the specific embodiments of the present invention.

1 is a view simply showing a rolling mill according to an embodiment of the present invention.
Figure 2 is a block diagram simply showing the rolling mill according to an embodiment of the present invention.
3 to 5 are views provided to explain the operation of the rolling mill according to embodiments of the present invention.
6 to 8 are views provided to explain the operation of the rolling mill according to embodiments of the present invention.
9 is a view simply showing a rolling mill according to an embodiment of the present invention.
10 is a view simply showing a spindle unit included in a rolling mill according to an embodiment of the present invention.
11 is a flowchart provided to explain the operation of the rolling mill according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

Embodiments of the present invention may be modified in various other forms or various embodiments may be combined, and the scope of the present invention is not limited to the embodiments described below. In addition, embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shape and size of elements in the drawings may be exaggerated for a clearer description, and elements indicated by the same reference numerals in the drawings may be the same elements.

1 is a view simply showing a rolling mill according to an embodiment of the present invention.

Referring to FIG. 1, the rolling mill 100 according to an embodiment of the present invention includes work rolls 101 and 102, backup rolls 103 and 104, spindle units 121 and 122, and driving motors 131, 132) and balance cylinders (141, 142). The driving motors 131 and 132 may generate a driving force for rotating the work rolls 101 and 102 in order to proceed with the rolling process, and the driving force is the work rolls 101 through the spindle units 121 and 122. , 102).

When the material enters between the work rolls 101 and 102, the material may be rolled by the rotating work rolls 101 and 102. For example, the material to be subjected to the rolling process may be a strip, and the thickness of the material may be greater than the gap between the work rolls 101 and 102. Therefore, as the rolling process progresses, the thickness of the material may decrease. During the rolling process, the work rolls 101 and 102 may be supported by the backup rolls 103 and 104.

Since the thickness of the material is greater than the gap between the work rolls 101 and 102, when the material enters the space between the work rolls 101 and 102, impact may be transmitted to the work rolls 101 and 102 and the material. have. The impact may be transmitted to the rolling mill 100 as a whole, and may be determined according to a difference between a gap between the work rolls 101 and 102 and a thickness of the material, a moving speed of the material, and the like.

At both ends of the work rolls 101 and 102, work roll chocks 111 and 112 for supporting the work rolls 101 and 102 are provided, and at both ends of the backup rolls 103 and 104, a backup roll choke Fields 113 and 114 may be provided. The work roll chokes 111 and 112 may be adjacent to the housing back and forth, and a liner may be provided between the work roll chokes 111 and 112 and the housing.

Due to the impact generated as the material enters between the work rolls 101 and 102, the work roll chokes 111 and 112 may move and collide with the housing. The magnitude of the impact generated when the work roll chokes 111 and 112 collide with the housing may increase as the distance between the work roll chokes 111 and 112 and the housing increases. Accordingly, if the distance between the work roll chokes 111 and 112 and the housing is not properly adjusted, wear of the liner may proceed rapidly. In addition, when a large impact occurs, the alignment of the work rolls 101 and 102 and the material is misaligned, so that a thickness deviation may occur in the width direction of the material after the rolling process.

In order to solve the above problems, the present invention connects the cylinders to the work roll chokes (111, 112) and pushes the work roll chokes (111, 112) in a specific direction according to the movement direction of the work roll. The gap between the chokes 111 and 112 and the housing can be minimized. Thus, by minimizing the impact caused by the entry of the material, the wear of the liner is slowed down, and the thickness variations due to the rolling process can be minimized by accurately aligning the work rolls 101 and 102 with the material.

Figure 2 is a block diagram simply showing the rolling mill according to an embodiment of the present invention.

In the embodiment shown in FIG. 2, the rolling mill 200 includes work rolls 201 and 202 for rolling the material 250, backup rolls 203 and 204 for supporting the work rolls 201 and 202, and work rolls Spindle units 221 and 222 for rotating the 201 and 202, driving motors 231 and 232, and a control unit 240 may be included.

The control unit 240 may control the driving motors 231 and 232 to adjust the rotation speed of the work rolls 201 and 202. In addition, the control unit 240 may adjust the positions of the work roll chokes 211 and 212 at both ends of the work rolls 201 and 202. The control unit 240 can change the distance between the work roll chokes 211 and 212 and the housing by adjusting the positions of the work roll chokes 211 and 212, and the material 250 is the work rolls 201 and 202 It is possible to minimize the impact that occurs when entering between.

For example, the control unit 240 may control the distance between the work roll chokes 211 and 212 and the housing by operating cylinders connected to the work roll chokes 211 and 212 in consideration of the entry direction of the material 250. have. In one embodiment, the material 250 may enter the first direction or the second direction, and the first direction is a direction from the first side to the second side of the work roll chokes 211 and 212, and the second The direction may be defined as a direction from the second side of the work roll chokes 211 and 212 toward the first side. Cylinders for adjusting the positions of the work roll chokes 211 and 212 may be provided on the first side and the second side of the work roll chokes 211 and 212, respectively. That is, a pair of cylinders may be connected to each of the work roll chokes 211 and 212.

The control unit 240 controls the cylinders connected to the second side of the work roll chokes 211 and 212 to push out the work roll chokes 211 and 212 when the material 250 enters the first direction. Can. Accordingly, the distance between the work roll chokes 211 and 212 and the housing on the first side is minimized, and impact due to the entry of the material 250 can be minimized. When the material 250 enters in the second direction, the control unit 240 may control cylinders connected to the first side of the work roll chokes 211 and 212 to push out the work roll chokes 211 and 212. have. Accordingly, the distance between the work roll chokes 211 and 212 and the housing on the second side is minimized, so that impact due to the entry of the material 250 can be reduced.

3 to 5 are views provided to explain the operation of the rolling mill according to embodiments of the present invention.

Referring first to FIG. 3, the rolling mill 300 includes a housing 305, work rolls 301, 302, backup rolls 303, 304, work roll chokes 311, 312, backup roll chokes 313, 314), a choke liner 320, and a housing liner 330. Rolling proceeds while the material 340 moves between the work rolls 301 and 302, and the material 340 may move in a first direction or a second direction, which is an opposite direction parallel to the first direction. The first direction may be defined as a direction from the first side to the second side, and the second direction may be defined as a direction from the second side to the first side.

When the material 340 moves in the first direction, the material 340 may enter the first side and collide with the work rolls 301 and 302. Accordingly, in order to minimize impact due to the collision, a gap between the choke liner 320 and the housing liner 330 adjacent to the first side may be minimized. Conversely, when the material 340 moves in the second direction, a gap between the choke liner 320 and the housing liner 330 adjacent to the second side may be minimized. The larger the gap between the choke liner 320 and the housing liner 330, the higher the probability that misalignment of the work rolls 301 and 302 may occur due to collision of the work rolls 301 and 302 with the material 340. Hereinafter, it will be described with reference to FIGS. 4 and 5.

4 and 5, the work roll 401 is connected to the work roll chokes 402 on both sides thereof, and the work roll chokes 402 have a housing 405 in each of the first direction and the second direction. And may be adjacent. In order to alleviate the impact that occurs when the work roll chokes 402 and the housing 405 collide, a choke liner 403 and a housing liner 404 are provided in the work roll chokes 402 and the housing 405, respectively. Can be prepared.

4 is a case in which the alignment state of the work roll 401 is good, and the rotation axis 410 of the work roll 401 may be perpendicular to the first direction and the second direction. On the other hand, Figure 5 may be a case where the misalignment of the work roll 401 occurs. Referring to FIG. 5, the rotation axis 411 of the work roll 401 may have a predetermined angle difference θ with the rotation axis 410 perpendicular to the first direction and the second direction. That is, in the embodiment illustrated in FIG. 5, the rotation axis 411 of the work roll 401 may not be perpendicular to the first direction and the second direction. Therefore, during the rolling process, thickness variations may occur in the width direction of the material, or damage may occur in the material.

In the present invention, it is possible to adjust the distance between the work roll chokes 204 and the housing 405 by connecting cylinders to both sides of the work roll chokes 402 and controlling the cylinders according to the movement direction of the material. Therefore, it is possible to effectively reduce the impact due to the entry of the material and ensure stable operation of the rolling mill. Hereinafter, with reference to FIGS. 6 to 8 will be described in more detail.

6 to 8 are views provided to explain the operation of the rolling mill according to embodiments of the present invention.

Referring first to FIG. 6, the rolling mill 500 includes work rolls 501 and 502, backup rolls 503 and 504, work roll chokes 511 and 512 supporting the work rolls 501 and 502, and backup rolls Backup roll chokes 513, 514 supporting cylinders 503, 504, cylinders 551, 552, and the like. Liners 520 and 530 for relieving impact may be provided in the work roll chokes 511 and 512 and the housing 505, respectively. The cylinders 551 and 552 may include first cylinders 551 installed on the first side and second cylinders 552 installed on the second side.

When the material 540 enters the first side and exits the second side, that is, when the material 540 moves in the first direction, a large impact is generated between the choke liner 520 and the housing liner 530 close to the first side. Can occur. Therefore, in order to effectively reduce the impact due to the entry of the material 540 when the material 540 moves in the first direction, it is necessary to reduce the gap between the choke liner 520 and the housing liner 530 close to the first side. There is. In one embodiment of the present invention, by the control command of the control unit for controlling the operation of the rolling mill 500, the second cylinders 552 close to the second side are the work roll chokes 511 and 512 and the backup roll choke Fields 513 and 514 can be pushed out. Therefore, the distance between the choke liner 520 and the housing liner 530 close to the first side is reduced, so that impact due to the entry of the material 540 can be minimized.

Conversely, when the material 540 enters the second side and exits the first side, that is, when the material 540 moves in the second direction, the first cylinders 551 close to the first side are controlled by the control command of the control unit. Roll chokes 511 and 512 and backup roll chokes 513 and 514 may be pushed out. Therefore, the distance between the choke liner 520 and the housing liner 530 close to the second side is reduced, so that impact due to entry of the material 540 can be minimized.

In one embodiment, the rolling mill 500 may include a sensor 550 for detecting the entry direction of the material 540. The sensors 550 may be installed on the first side and the second side, respectively, and detect where the material 540 enters the first side or the second side to inform the control unit. The control unit may minimize impact due to the entry of the material 540 by controlling the cylinders 551 and 552 based on the detection result of the sensor 550.

7 may be a diagram illustrating a case where the material 540 moves along the first direction. Referring to FIG. 7, when the material 540 moves along the first direction, the second cylinders 552 may push the work roll chokes 502 in the opposite direction to the first direction as much as possible. Accordingly, the first gap d1 between the choke liner 520 adjacent to the first side and the housing liner 530 is the second gap d2 between the choke liner 520 adjacent to the second side and the housing liner 530. ), as a result, it is possible to minimize the impact of the entry of the material 540.

8 may be a diagram showing a case where the material 540 moves along the second direction. Referring to FIG. 8, when the material 540 moves along the second direction, the second cylinders 551 may push the work roll chokes 502 in the opposite direction to the second direction as much as possible. Accordingly, the second gap d2 between the choke liner 520 adjacent to the second side and the housing liner 530 is the first gap d1 between the choke liner 520 adjacent to the first side and the housing liner 530. ), it is possible to minimize the impact of the entry of the material (540).

For example, the control unit may control the first cylinders 551 and the second cylinders 552 based on the output of the AI logic previously learned. As an example, the AI logic receives the thickness of the material 540, the target thickness after the rolling process, and the diameters of the work rolls 501, 502, and the like, and the first interval required to minimize the impact on the rolling mill 500. It can be learned to calculate (d1) and the second interval (d2). The control unit calculates the first interval d1 and the second interval d2 using pre-trained artificial intelligence logic and controls the first cylinders 551 and the second cylinders 552 according to the calculation result. Can.

9 is a view simply showing a rolling mill according to an embodiment of the present invention.

Referring to FIG. 9, the rolling mill 600 includes work rolls 601 and 602 and backup rolls 603 and 604, and a lower backup roll 604 includes automatic gauge control (AGC) cylinders ( 605, 606). The AGC cylinders 605 and 606 may include a work side (WS) cylinder 605 and a driving side (DS) cylinder 606.

The work rolls 601 and 602 are connected to the spindle units 611 and 612 at the driving side, respectively, and the driving motors 621 and 621 are the work rolls 601 and 602 through the spindle units 611 and 612. Can rotate. Spindle units 611, 612 may be supported by support cylinders 613, 614, and support cylinders 613, 614 may be installed adjacent to an intermediate point of spindle units 611, 612. have.

The support cylinders 613 and 614 can support the spindle units 611 and 612 at a predetermined pressure. If the pressure of the support cylinders 613 and 614 is too large or too small, the spindle units 611 and 612 move up and down, so that the connection between the spindle units 611 and 612 and the drive motors 621 and 622, or Problems such as the connection between the spindle units 611 and 612 and the work rolls 601 and 602 may be broken.

In addition, the load applied to the support cylinders 613 and 614 may change while the rolling process by the work rolls 601 and 602 is in progress. Therefore, in order to prevent damage to the connection portion provided at both ends of the spindle units 611 and 612, it is necessary to dynamically control the support force of the support cylinders 613 and 614.

In one embodiment of the present invention, the control unit of the rolling mill 600 may include artificial intelligence logic. The control unit may input at least one of the movement speed of the material, the output of the driving motors 621 and 622, and the hydraulic fluctuations of the support cylinders 613 and 614 into the AI logic. The artificial intelligence logic may include a machine learning model, etc., in which learning has been completed beforehand, and input at least one of the movement speed of the material, the output of the driving motors 621 and 622, and the hydraulic fluctuations of the supporting cylinders 613 and 614. The receiving cylinders 613 and 614 can be controlled. As an example, the AI logic can control the support cylinders 613, 614 such that the support force variations supporting the spindle units 611, 612 are minimized.

10 is a view simply showing a spindle unit included in a rolling mill according to an embodiment of the present invention.

Referring to FIG. 10, the spindle unit may include body parts 700 and connection parts 701 and 702 provided at both ends of the body part 700. The first connection part 701 is connected to one of the work rolls 711 and 712, and the second connection part 702 can be connected to a drive motor for rotating the work rolls 711 and 712. A support cylinder 710 is connected to the middle of the body portion 700 to support the load of the spindle unit.

The support cylinder 710 may support the spindle unit hydraulically. In addition to the load of the spindle unit itself, the load applied to the support cylinder 710 may be changed by the operation of the drive motors and work rolls 711 and 712. For example, the load applied to the support cylinder 710 may be changed in the process of adjusting the vertical position of the work rolls 711 and 712 according to the target thickness of the material. Therefore, when the support force of the support cylinder 710 is not properly controlled, problems such as breakage of the connection parts 701 and 702 may occur.

In the rolling mill according to an embodiment of the present invention, the support force of the support cylinder 710 may be adjusted using artificial intelligence logic embedded in the control unit. The AI logic may include a machine learning model that has already been trained to calculate optimal support for various input conditions. The input conditions may include the vertical positions of the work rolls 711 and 712, the thickness of the material, the moving speed of the material, the output of the drive motor, the self-load of the spindle unit, the hydraulic fluctuation of the support cylinder 710, and the like.

11 is a flowchart provided to explain the operation of the rolling mill according to an embodiment of the present invention.

Referring to Figure 11, the operation of the rolling mill according to an embodiment of the present invention, the rolling mill may be started by sensing the movement direction of the material (S10). For example, the rolling mill may sense the moving direction of the material in a first direction or a second direction using a sensor. In one embodiment, the sensors may be provided on the first side and the second side, respectively, where the material can enter the space between the work rolls. The first direction may be defined as a direction from the first side toward the second side, and the second direction may be defined as a direction from the second side toward the first side.

The control unit of the rolling mill may control the first and second cylinders connected to the work roll chokes at both ends of the work rolls according to the movement direction detected in step S10. For example, the first cylinders may be connected to the work roll choke on the first side, and the second cylinders may be connected to the work roll choke on the second side. The control unit may determine whether the moving direction is the first direction using the detection result of the sensor (S11).

As a result of the determination in step S11, if the moving direction of the material is the first direction, the control unit may control the second cylinders to push out the work roll chokes (S12). By control of step S12, the work roll chokes can be moved to the first side. Therefore, the impact due to the collision of the work roll and the material entering the first side can be effectively reduced.

If it is determined in step S11 that the second direction is the moving direction of the material, the control unit may control the first cylinders to push out the work roll chokes (S13). By control of step S13, the work roll chokes can be moved to the second side. Therefore, it is possible to effectively reduce the impact due to the collision of the work roll and the material entering the second side.

On the other hand, while the rolling process is in progress, the control unit may detect the operating state of the rolling mill (S14). For example, the operating state may include information such as the vertical position of the work rolls, the thickness of the material, the moving speed of the material, the output of the driving motor, the self-load of the spindle unit, and the hydraulic fluctuation of the support cylinder supporting the spindle unit. have. The control unit can control the support cylinder based on the information detected in step S14, thereby minimizing the variation in the support force of the support cylinder and stably operating the rolling mill.

The present invention is not limited by the above-described embodiments and the accompanying drawings, but is intended to be limited by the appended claims. Accordingly, various forms of substitution, modification, and modification will be possible by those skilled in the art without departing from the technical spirit of the present invention as set forth in the claims, and this also belongs to the scope of the present invention. something to do.

100, 200, 300, 400, 500, 600: rolling mill
101, 102, 201, 202, 301, 302, 401, 501, 502, 601, 602, 711, 712: Work roll
103, 104, 203, 204, 303, 304, 503, 504, 603, 604: backup roll
111-114, 211-212, 311-314, 402, 511-514: work roll choke
121, 122, 221, 222, 611, 612, 700: spindle unit
551: first cylinder
552: second cylinder
613, 614, 710: support cylinder

Claims (17)

Work rolls for rolling the material moving in the first direction or the second direction;
Work roll chokes connected to both ends of the work rolls in a housing and supporting the work rolls;
First cylinders connected to the first side of the work roll chokes;
Second cylinders connected to the second side of the work roll chokes opposite to the first side; And
A control unit controlling the cylinders such that when the material enters between the work rolls, the gap between the housing and the work roll chokes adjacent to the entry direction of the material decreases; Rolling machine comprising a.
According to claim 1,
The moving direction of the material is sensed by one of the first direction and the second direction, and the first direction is a direction from the first side toward the second side and the second direction is from the second side A sensor in a direction toward the first side; Rolling machine further comprising.
According to claim 2,
The control unit controls the second cylinders to push the work roll chokes when the material enters the first direction.
According to claim 2,
The control unit controls the first cylinders and the second cylinders such that when the material enters the first direction, the distance between the work roll chokes and the housing is minimized on the first side.
According to claim 2,
The control unit controls the first cylinders to push the work roll chokes when the material enters the second direction.
According to claim 2,
The control unit controls the first cylinders and the second cylinders such that when the material enters the second direction, the gap between the work roll chokes and the housing is minimized on the second side.
According to claim 1,
The control unit includes a rolling mill including artificial intelligence logic that controls the cylinders by receiving at least one of a deviation of a mill constant measured at each of both ends of the work rolls and the work rolls of the material.
The method of claim 7,
The AI logic is a rolling mill that controls the cylinders such that variation in mill constants measured at each end of the work rolls is minimized.
The method of claim 8,
The AI logic is a rolling mill that controls the cylinders such that the difference in angle between the rotation axis of the work rolls and the third direction perpendicular to the first direction and the second direction is minimized.
According to claim 1,
Spindle units connected to the work rolls;
Drive motors for rotating the spindle units so that the work rolls roll the material; And
Support cylinders supporting the spindle units; Rolling machine further comprising.
The method of claim 10,
The control unit detects at least one of the movement speed of the material, the output of the drive motors, and the hydraulic fluctuations of the support cylinders and controls the support cylinders so that the fluctuations in the support force for the support cylinders to support the spindle units are minimized. Rolling mill.
Work rolls for rolling the material moving in the first direction or the second direction;
Spindle units connected to the work rolls;
Drive motors connected to the spindle units and rotating the work rolls through the spindle units;
Support cylinders supporting the spindle units; And
A control unit that detects at least one of the movement speed of the material, the output of the drive motors, and the hydraulic fluctuations of the support cylinders to adjust the support force for the support cylinders to support the spindle units; Rolling machine comprising a.
The method of claim 12,
The control unit includes artificial intelligence logic that adjusts the hydraulic pressure of the support cylinders such that the variation of the support force is minimized based on at least one of the movement speed of the material, the output of the drive motors, and the hydraulic variation of the support cylinders. Rolling mill.
The method of claim 12,
Work roll chokes connected to both ends of the work rolls in a housing and supporting the work rolls;
First cylinders connected to the first side of the work roll chokes; And
Second cylinders connected to the second side of the work roll chokes opposite to the first side; Rolling machine further comprising.
The method of claim 14,
The control unit, while the material is moving, by controlling the cylinder to adjust the gap between the work roll chokes and the housing rolling mill.
The method of claim 14,
The control unit controls the second cylinders to push the work roll chokes when the material moves in the first direction from the first side toward the second side.
The method of claim 14,
The control unit controls the first cylinders to push the work roll chokes when the material moves in the second direction from the second side toward the first side.

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