JP2013128978A - Side guide device and side guide method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a side guide device with which a rolled stock is prevented from uneven contacting with a side guide and the position of the rolled stock can be controlled even when the inclination of the side guide or the wear of contacting part of the rolled stock with the side guide is generated cased by defective mechanical accuracy, backlash and the wear of the device.SOLUTION: The side guide device 100 for guiding the side faces of the rolled stock S in a metal plate rolling line includes: at least a pair of side guides 1a, 1b which are provided on both sides of the threading line of the rolled stock S; the contacting part 7 which is brought into contact with the rolled stock, which is attached on the threading side of each side guide; two or more load detecting sensors 3 which are installed side by side in the threading direction to each side guide and for detecting the load imparted from the rolled stock S; and two or more drive units 2 which are installed side by side to each side guide in the threading direction and with which each side guide is moved respectively and independently in the width direction of the rolled stock.

Description

  The present invention relates to a side guide device and a side guide method for guiding a side surface of a rolled material provided immediately before a winding line for winding a rolled sheet of a metal plate such as a steel plate, particularly a rolled material of the rolling line.

  Generally, in the production of a rolled material in a hot rolling line, a rolled material is roughly rolled several times using a roughing mill, and then finish rolling is performed using a finish rolling mill. Then, after the finish rolling process, the rolled material is wound up in a coil shape by a downcoiler provided with a pinch roll, and is shipped as a product to a shipment or a next processing process. On the upstream side of the down coiler, a side guide device that guides the side surface of the rolled material is installed for the purpose of controlling the position of the rolled material, preventing meandering, and applying back tension for winding. Such a side guide device generally includes an inclined portion arranged on the upstream side with respect to the sheet passing direction of the rolled material and a parallel portion arranged on the downstream side. The inclined part is inclined so that the upstream side of the side guide opens in the conveying direction, and when the rolled material enters in a state where the rolled material is off-center due to meandering or bending of the rolled material, the rolled material is moved to the center between the side guides. Has a function to guide. Moreover, the parallel part is provided with side guides in parallel along the plate line of the rolled material, and has a function of sandwiching the rolled material and performing position control for preventing meandering and stabilizing winding. Before the rolled material passes, the side guides of the inclined portion and the parallel portion wait in advance at an opening wider than the plate width of the rolled material. Thereby, even if there exists a bending, a breadth, or meandering of a rolling material, a rolling material can pass between side guides. Next, the rolled material is guided to the center of the coiler width direction by closing the side guide interval to a predetermined opening and sandwiching the rolled material at a predetermined time after passing through the rolling mill.

  In the rolling material winding process, at the initial stage where the rolled material is coiled by a coiler, the tip is wound by a coiler, but the end is rolled by a preceding rolling mill. Sufficient tension is applied. For this reason, meandering is unlikely to occur and winding failure is unlikely to occur. However, when the terminal ends through the rolling mill, the tension does not act on the rolled material, which is a major factor in the meandering of the rolled material and the coil winding failure. In order to stably wind the rolled material with a coiler, the side guide device guides the rolled material side surface at the contact portion such as a disk roller or an insert plate to control the position of the rolled material.

  Conventionally, as a side guide device for rolling material position control, it has a tilting guide that is swingably connected to a parallel guide, and the tip of the tilting guide is inserted before the tip of the rolling material enters the side guide. Proposes a device that waits in the inclined state opened to the side, closes the tilting guide until it reaches the position near the center of the parallel guide, and adds a parallel length when the tip of the conveyed rolled material reaches the vicinity of the center of the parallel guide (For example, Patent Document 1).

  However, this method can be used when the side guide device has poor mechanical accuracy or rattling, when the side guide is tilted due to wear of the device, or when the side guide is in contact with the rolled material. When wear occurs in the plate, the rolling material may be unevenly contacted with the side guides, or a gap may be formed between the side guide contact portion and the rolling material, so the position of the rolling material can be controlled. It becomes difficult to cause meandering of the rolled material and poor winding of the rolled material. Furthermore, since a drive mechanism for the tilt guide is required, the apparatus is likely to be complicated, and there is a problem in that running and maintenance costs increase.

  As another side guide device, the bending of the rolled material is predicted based on the operation data including the width and thickness of the rolled material, and the standby opening degree is determined according to the predicted bending of the rolled material after rolling. A side guide device that determines the tightening speed and operates the side guide accordingly has also been proposed (for example, Patent Document 2).

  However, even when rolling a rolled material having the same dimension setting, the dimensions are slightly different depending on external conditions such as temperature and internal conditions such as raw materials and manufacturing methods, and it is very difficult to predict meandering and bending. This method is also used when the machine accuracy is poor or the backlash occurs in the side guide device, when the side guide is tilted due to wear of the device, or when the disc roller or insert plate is the contact portion between the side guide and the rolled material. When wear occurs in the rolled material, the rolling material may be unevenly contacted with the side guides, or a gap may be formed between the side guide contact portion and the rolled material, so that the position of the rolled material cannot be controlled, and rolling is performed. There are problems that meandering of the material and winding failure of the rolled material occur.

  Furthermore, as another side guide device, two cylinders are used per side guide side, the opening on the exit side of the side guide is narrower than that on the entrance side to prevent meandering, and a load exceeding a predetermined value is applied to the side guide exit side. A side guide device that opens the side guide when it is added to has been proposed (for example, Patent Document 3).

  However, in this case, the side guide device is closed on the exit side, and only the exit side comes into contact with the rolled material, so that the rolled material is restrained by point contact on the side guide exit side, and meandering is likely to occur. In addition, when the side guide device has poor machine accuracy or play, the side guide tilts due to wear of the device, or the disc roller or insert plate that contacts the side guide and the rolled material is worn. If it occurs, the rolled material strikes against the side guide, and therefore an uneven load is likely to occur. In this case, the side guide is opened, so it is difficult to control the side guide position.

Japanese Patent Laid-Open No. 11-123434 JP-A-8-99112 JP-A-6-262260

  As described above, in general, in the side guide device, mechanical accuracy defects, backlash, wear of the device, and wear of the side guide contact portion due to friction with the rolling material cannot be avoided, and the physical quantities thereof are successively changed. However, in the side guide devices described in Patent Documents 1 to 3, when the side guide is tilted due to mechanical accuracy defects, backlash, or a disturbance factor due to wear, or when the wear of the side guide contact portion due to the rolled material is large. , The rolling material is unevenly contacted with the side guide, or a gap is formed between the side guide contact portion and the rolling material, so the position of the rolling material cannot be controlled, and the coiler winding failure occurs. There is.

  The present invention has been made in view of such circumstances, and in the case where mechanical accuracy defects, backlash, inclination of the side guide due to wear of the apparatus, or wear of the contact portion between the side guide and the rolling material occurs, rolling is also performed. It is an object of the present invention to provide a side guide device and a side guide method that can control the position of a rolled material without causing the material to strike the side guide.

In order to solve the above-mentioned problem, the present invention is a side guide device for guiding the side surface of a rolled material in a rolling line of a metal plate, and includes at least a pair of side guides provided on both sides of the passing plate line of the rolled material, Load detection for detecting the load received from the rolled material, two or more contact portions that are in contact with the rolled material attached to the passing plate side of each side guide and are arranged side by side in the passing plate direction with respect to each side guide. A sensor,
Provided is a side guide device comprising two or more drive devices arranged side by side in the sheet passing direction with respect to each side guide, and each of the side guides being independently moved in the rolling material width direction.

  In the above side guide device, an arithmetic device for comparing a predetermined threshold with a signal of a load received by the side guide from the rolled material, detected by the load detection sensor, and while tension is acting on the rolled material. And a controller that independently drives the drive device based on the calculation result of the calculation device to adjust the position of the side guide and stops the drive when the calculation result falls within the predetermined threshold. be able to.

  In addition, the load detection sensor can be installed between the back surface of the side guide and the driving device, or inside the contact portion.

  Further, the contact portion may be constituted by a disk roller or an insert plate.

  Furthermore, a display for displaying a contact state between the side guide and the rolled material is further provided, and an operator manually adjusts an opening degree or an angle of the pair of side guides based on the contact state displayed on the display. It is preferable that it is possible.

  The present invention is also directed to at least a pair of side guides provided on both sides of a sheet passing line of rolled material, a contact portion that comes into contact with the rolled material attached to the passing plate side of each side guide, and each side guide. Two or more load detection sensors that are installed side by side in the sheet passing direction and detect the load received from the rolled material, and two or more that are installed side by side in the sheet passing direction with respect to each side guide, and each side guide is rolled A side guide method using a side guide device that guides the side surface of the rolled material in the rolling line of the metal plate, wherein the tension is applied to the rolled material. While the load detection sensor detects the load signal received by the side guide from the rolled material and a predetermined threshold value, and tension acts on the rolled material. While driving the drive device independently based on the calculation result of the calculation step, adjusting the position of the side guide, and stopping the drive when the calculation result falls within the predetermined threshold value. A side guide method is provided.

  According to the present invention, at least a pair of side guides provided on both sides of the sheet passing line of the rolled material, a contact portion that comes into contact with the rolled material attached to the passing plate side of each side guide, and the side guide are passed through. Two or more load detection sensors for detecting the load received from the rolled material, arranged in the plate direction, and two or more installed in the sheet passing direction for each side guide, and each side guide in the width direction of the rolled material Since the drive device is independently moved, the position of the side guide can be adjusted so that the contact state between the side guide and the rolled material becomes a predetermined value. For this reason, when the side guide tilts due to poor machine accuracy, backlash, or equipment wear, and when the wear of the contact portion between the side guide and the rolled material occurs, the rolled material does not strike the side guide, and the rolled material Can be adjusted, and meandering and winding failure of the rolled material can be prevented.

  Further, in a stable state in which tension is applied to the rolled material, the load signal detected by the load sensor from the side guide is compared with a predetermined threshold value, and based on the calculation result of the calculation device. Then, the drive device is driven independently to adjust the position of the side guide so that the contact state between the side guide and the rolled material becomes a predetermined value, and the drive is stopped when the calculation result falls within the predetermined threshold value. Therefore, the position of the side guide can be adjusted while the rolled material is stable, and the contact state between the side guide and the rolled material can be adjusted with high accuracy. In addition, when the tension no longer acts on the rolled material, the position of the side guide is maintained, so the position of the rolled material can be controlled with high accuracy, and the meandering and winding failure of the rolled material can be ensured. Can be prevented.

It is a top view which shows one Embodiment which applied the side guide apparatus of this invention just before the down coiler in a hot rolling line. It is a side view which shows one Embodiment which applied the side guide apparatus of this invention just before the downcoiler in a hot rolling line. It is a schematic diagram showing the contact state of a side guide and a rolling material when the disk roller in a side guide is partly worn.

Hereinafter, modes for carrying out the present invention will be described.
FIG. 1 is a plan view showing an embodiment in which the side guide device of the present invention is applied immediately before a down coiler in a hot rolling line, and FIG. 2 is a side view thereof.

  The side guide device 100 is provided immediately before the downcoiler of the hot rolling line. Specifically, the side guide device 100 is provided between the finish rolling mill 12 and the downcoiler pinch roll 10, and the rolled material S is rolled by the finish rolling mill 12, and then the side guide device 100. The pinch roll 10 is guided to the center of the pinch roll 10, and a downward pinch force is applied by the pinch roll 10, and the coil is wound around the mandrel 14 of the down coiler. In addition, 11 is a motor for driving the pinch roll 10, and 13 is a motor for driving the roll of the finish rolling mill 12.

  The side guide device 100 includes a side guide unit 1, a side guide driving cylinder 2, a load detection sensor 3, a load calculator 4, and a controller 5.

  The side guide unit 1 has a function of controlling the position of the rolled material S to prevent meandering and stabilizing winding, and is a pair of downstream units arranged on the downstream side with respect to the sheet passing direction of the rolled material S. It has a side side guide 1a and a pair of upstream side guides 1b arranged on the upstream side. The rolled material S is pressed and sandwiched between the pair of downstream side guides 1a and the pair of upstream side guides 1b to guide the rolled material S.

  A disk roller 7 as a contact portion is attached to the pressing surfaces of the downstream side guide 1a and the upstream side guide 1b, and the position of the rolled material S is controlled by contacting the disk roller 7 and the rolled material S. Meandering can be prevented.

  Further, on the back side of each downstream side guide 1a and each upstream side guide 1b, the two drive cylinders 2 are arranged in the direction of the plate of the rolled material S so that they can extend and contract independently of each other. Has been. By independently moving these two side guide driving cylinders 2 in the width direction of the rolled material S, the positions of the downstream side guide 1a and the upstream side guide 1b can be freely adjusted. ing. By adjusting the positions of the downstream side guide 1a and the upstream side guide 1b in this way, the opening degree of the pair of downstream side guides 1a and the pair of upstream side guides 1b, and the pair of upstream side guides 1b The angle is also adjusted.

  The two load detection sensors 3 are attached to the back surfaces of the downstream side guides 1a and the upstream side guides 1b side by side in the sheet passing direction of the rolled material S. The load detection sensor 3 is provided at a position corresponding to the tip of the piston 2a of the driving cylinder 2, and when the side guide 1a or 1b is driven by the driving cylinder 2 and contacts the rolling material S, the rolling material The load received from S is detected. Load information obtained from the load detection sensor 3 is input to the load calculator 4, and the contact state between the rolled material S and the side guides 1a and 1b can be calculated based on the balance of the load. In FIG. 1, the load detection sensor 3 is shown at a position corresponding to the disk roller 7, but the disk roller 7 is provided regardless of the position of the load detection sensor 3.

For example, as shown in FIG. 3, when the disk roller 7 of the upstream side guide 1 b is unevenly worn and only the disk roller 7 on the inlet side of the upstream side guide 1 b is in contact with the rolling material S with the force of Ws, in load detection sensor 3 upstream at a distance of a from the contact portion, the load W ₁ of the compression is measured, the load detection sensor 3 on the downstream side at a distance of b from the contact portion, the load W ₂ of the tension is measured Is done. Then, the rolled material S from receiving a load W _S and the relationship of these loads W _1, W ₂ is the following (1), is represented by equation (2), by solving this, it is clear contact. The load detection sensor 3 may be at least two, but may be more than two. The load detection sensor 3 can calculate the contact state more accurately as the amount is larger.
W _S = W ₁ + W ₂ (1)
W ₁ × a = W ₂ × b (2)

  The contact state can be confirmed on the display 6 connected to the load calculator 4, and the operator manually adjusts the position of the side guide drive cylinder 2 by adjusting the initial side guide opening and other parameter presets. This can be done by setting to.

  Information on the contact state between the rolling material S and the side guides 1a and 1b is input to a controller 5 that controls the side guide unit 1, and the controller 5 drives the side guide driving cylinder 2 to a calculated value, and the side guide 1a, The position of the side guides 1a and 1b is controlled so that 1b contacts the rolling material S in a predetermined area and guides the rolling material S.

Next, the operation of the side guide device 100 configured as described above will be described.
When the end of the rolled material S is rolled by the finish rolling mill 12 or before rolling, a sufficient tension is applied to the rolled material S, so that the rolled material S is stable and no meandering or winding failure occurs. Hard to occur. However, after the end of the rolled material S has passed through the finish rolling mill 12, the tension of the finishing mill 12 does not act on the rolled material S, so that the rolled material S is likely to meander or take up poorly. .

  Therefore, in the side guide device 100 of the present embodiment, first, in a stable state where the tension applied by the finish rolling mill 12 is applied to the rolled material S, detection is performed by the two load detection sensors 3 provided in each side guide. Command from the controller 5 so that the loads detected by the two load detection sensors 3 are preferably the same value so that the load received by the side guides 1a, 1b from the rolled material S becomes a predetermined threshold. Based on the above, the side guide drive cylinders 2 provided for each side guide are independently driven to adjust the positions of the side guides 1a and 1b.

  Next, after the end of the rolled material S has passed through the finish rolling mill 12, the side guide drive cylinder 2 is stopped and the stroke is fixed, and the positions of the side guides 1a and 1b are fixed to the adjusted values, The position of the rolled material S can be controlled while guiding the rolled material S to the pinch roll 10.

  As described above, the side guide device 100 according to the present embodiment is in contact with the side guides 1a and 1b provided on both sides of the sheet passing line of the rolled material S and the rolling material attached to the passing plate side of each side guide. Disk roller 7 which is a part, two load detection sensors 3 arranged side by side in the plate passing direction with respect to each side guide, and two side by side installed in the plate passing direction with respect to each side guide. Since the side guide drive cylinder 2 that moves independently in the width direction is provided, the positions of the side guides 1a and 1b are adjusted so that the contact state between the side guides 1a and 1b and the rolled material S becomes a predetermined value. Accordingly, the opening degree and angle of the pair of downstream side guides 1a and the pair of upstream side guides 1b are also adjusted. For this reason, rolling also occurs when the side guides 1a and 1b are inclined due to poor mechanical accuracy, backlash, and wear of the apparatus, and when the wear of the disk roller 7 that is a contact portion between the side guides 1a and 1b and the rolling material S occurs. It is possible to adjust the position of the rolled material S so that the material S does not strike the side guide, and meandering and winding failure of the rolled material S can be prevented.

  In addition, the side guides 1a and 1b detected by the two load detection sensors 3 provided in each side guide in a stable state in which the tension applied by the finish rolling mill 12 is applied to the rolled material S are from the rolled material S. A signal of the received load is compared with a predetermined threshold value, and two are applied to each side guide based on a command from the controller 5 so that the contact state between the side guides 1a, 1b and the rolled material S becomes a predetermined value. After the side guide drive cylinders 2 provided independently are driven to adjust the positions of the side guides 1a and 1b and the end of the rolled material S has passed through the finish rolling mill 12, the side guide drive cylinders 2 are moved. Since the stroke is fixed and the position of the side guides 1a and 1b is fixed to the adjusted value, and the position of the rolled material S is controlled while the rolled material S is guided to the pinch roll 10, the rolled material Side guide 1a in a state in which a stable, it is possible to adjust the position of 1b, the side guides 1a, the contact state between 1b and the rolled material S can be adjusted with high precision. Moreover, the position of the rolling material S is controlled with high accuracy by maintaining the positions of the side guides 1a and 1b adjusted in this way even after the end of the rolling material S has passed through the finish rolling mill 12. Thus, meandering and winding failure of the rolled material can be reliably prevented.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation is possible. For example, in the said embodiment, although the contact part of a side guide and a rolling material was comprised with the disc roller, an insert plate may be sufficient. Moreover, in the said embodiment, although the load detection sensor was provided between the cylinder for a side guide drive, and the back surface of a side guide, you may provide in the inside of the contact part of a side guide and a rolling material. Furthermore, although the case where two load detection sensors are provided for each side guide has been described in the above embodiment, three or more load detection sensors may be arranged side by side in the plate direction. Furthermore, in the above-described embodiment, an example in which two pairs of side guides on the upstream side and the downstream side are provided is shown. However, there may be at least a pair of side guides, and there may be three or more pairs.

DESCRIPTION OF SYMBOLS 1 Side guide unit 1a, 1b Side guide 2 Side guide drive cylinder 3 Load detection sensor 4 Load calculator 5 Controller 6 Display 7 Disc roller (contact part)
DESCRIPTION OF SYMBOLS 10 Pinch roll 12 Finish rolling mill 14 Mandrel 100 Side guide apparatus S Rolled material

Claims (6)

A side guide device for guiding a side surface of a rolled material in a metal plate rolling line,
At least a pair of side guides provided on both sides of the sheet passing line of the rolled material;
A contact portion that comes into contact with the rolling material attached to the through-plate side of each side guide;
A load detection sensor for detecting a load received from a rolled material, two or more installed side by side in the sheet passing direction for each side guide,
Two or more side guide devices arranged side by side in the sheet passing direction with respect to each side guide, and a drive device that moves each side guide independently in the rolling material width direction. An arithmetic device that detects a load signal received from the rolled material by the side guide and is detected by the load detection sensor, and a predetermined threshold value;
While tension is acting on the rolled material, based on the calculation result of the calculation device, the drive device is driven independently to adjust the position of the side guide, and the calculation result is within the predetermined threshold value. The side guide device according to claim 1, further comprising a controller that stops the driving.   3. The side guide device according to claim 1, wherein the load detection sensor is installed between a rear surface of the side guide and the driving device, or inside the contact portion.   The side guide device according to any one of claims 1 to 3, wherein the contact portion includes a disk roller or an insert plate.   A display for displaying a contact state between the side guide and the rolled material is further provided, and an operator can manually adjust an opening degree or an angle of the pair of side guides based on the contact state displayed on the display. The side guide device according to claim 1, wherein the side guide device is a side guide device. At least a pair of side guides provided on both sides of the sheet passing line of the rolled material, a contact portion that comes into contact with the rolled material attached to the passing plate side of each side guide, and the side guides arranged in the sheet passing direction. Two or more load detection sensors for detecting a load received from the rolled material, and two or more load sensors arranged side by side in the sheet passing direction with respect to each side guide, and each side guide in the width direction of the rolled material A side guide method that uses a side guide device that guides the side surface of the rolled material in a metal sheet rolling line.
A calculation step of comparing a predetermined threshold with a signal of a load received by the side guide from the rolled material while the tension is acting on the rolled material,
While tension is acting on the rolled material, based on the calculation result of the calculation step, the drive device is driven independently to adjust the position of the side guide, and the calculation result is within the predetermined threshold value. A side guide method comprising: a step of stopping the driving.

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