JPWO2018020569A1 - Edger control device - Google Patents

Abstract

Provided is an edger control device capable of improving the accuracy of a product width dimension. The edger control device calculates the entry side width deviation based on the detected value of the actual sheet width of the material to be rolled collected by the entry side width result data collector, and based on the entry side width deviation, the edger leading end The edger leading edge opening pattern correction unit for calculating the edger leading edge opening pattern correction amount for the opening controller and the edger leading edge opening pattern generated by the edger leading edge opening pattern generator Edger leading edge opening pattern correction based on the actual sheet width detection value of the material to be rolled collected by the side width actual data collector and the entry width deviation calculated by the edger leading edge opening pattern corrector And an edger leading end opening pattern correction correction unit for calculating an edger leading end opening pattern correction correction term for the container.

Description

  The present invention relates to an edger control device.

  Patent Document 1 discloses an edger control device. The said control apparatus corrects a typical board width prediction pattern. As a result, the accuracy of the dimension in the width direction of the product can be improved.

Japanese Unexamined Patent Publication No. 62-127111

  However, in the control device described in Patent Document 1, the same plate width prediction pattern may be set for the materials to be rolled having different plate width variations. For this reason, the width dimension of a product may become non-uniform | heterogenous.

  The present invention has been made to solve the above-described problems. An object of the present invention is to provide an edger control device capable of improving the accuracy of the width dimension of a product.

  An edger control device according to the present invention includes a pass schedule determiner that determines a gap of an edger roll based on a plate thickness and a plate width of a rolled material before rolling and a target plate width of the rolled material after rolling. The edger leading edge opening pattern generation for generating the edger leading edge opening pattern so as to match the unsteady portion of the leading edge of the material to be rolled with the target plate width based on the information from the pass schedule determiner And the edger roll opening pattern generated by the edger leading edge opening pattern generator and the edger leading edge opening pattern generated by the edger leading edge opening pattern generator. An edger leading end opening controller for controlling the degree, an entry side width record data collector for collecting the detected value of the actual sheet width of the material to be rolled on the entry side of the edger, and the edger Based on the detected value of the actual sheet width of the rolled material collected by the outgoing width actual data collector that collects the detected value of the actual sheet width of the rolled material on the outlet side An edger leading edge opening pattern corrector that calculates an inlet width deviation and calculates an edger leading edge opening pattern correction amount for the edger leading edge opening controller based on the inlet width deviation; and Edger leading edge opening pattern generated by the edger leading edge opening pattern generator, the actual plate width detection value of the rolled material collected by the outlet width actual data collector, and the edger leading edge opening Edger leading end opening pattern correction correction for calculating an edger leading end opening pattern correction correction term for the edger leading end opening pattern correction unit based on the input side width deviation calculated by the degree pattern correcting unit And With was.

  According to this invention, the edger leading end opening pattern is corrected based on the edger leading end opening pattern correction amount. The edger leading end opening pattern correction amount is corrected based on the edger leading end opening pattern correction correction term. For this reason, the precision of the width dimension of a product can be improved.

It is a block diagram of the roughing process of the hot rolling line to which the edger control apparatus in Embodiment 1 of this invention is applied. It is a block diagram of the edger leading end opening pattern corrector of the edger control device in Embodiment 1 of this invention. It is a block diagram of the edger leading end opening pattern correction corrector of the edger control device according to Embodiment 1 of the present invention. It is a figure which shows the actual board width | variety of the to-be-rolled material used for the control apparatus of the edger in Embodiment 1 of this invention. It is a figure which shows the actual board width | variety of the to-be-rolled material used for the control apparatus of the edger in Embodiment 1 of this invention. It is a figure which shows the edger tip end opening degree pattern produced | generated by the edger control apparatus in Embodiment 1 of this invention. It is a flowchart for demonstrating the outline | summary of operation | movement of the edger control apparatus in Embodiment 1 of this invention. It is a hardware block diagram of the edger control apparatus in Embodiment 1 of this invention. It is a block diagram of the edger leading end opening pattern corrector of the edger control apparatus in Embodiment 2 of this invention. It is a figure which shows the performance board width | variety of the to-be-rolled material used for the control apparatus of the edger in Embodiment 2 of this invention.

  A mode for carrying out the invention will be described with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the part which is the same or it corresponds in each figure. The overlapping explanation of the part is appropriately simplified or omitted.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram of a rough pressure process in a hot rolling line to which an edger control device according to Embodiment 1 of the present invention is applied.

  In FIG. 1, the rough rolling process of a hot rolling line is provided in the downstream rather than the heating furnace which is not shown in figure. The rough rolling process of the hot rolling line is provided on the upstream side of the finish rolling process (not shown).

  At least one edger 1 is provided on the upstream side of the rough rolling process of the hot rolling line. The edger 1 includes a roll 1a and a hydraulic cylinder 1b. At least one horizontal mill 2 is provided downstream of at least one edger 1.

  The entry side width meter 3 is provided on the upstream side of at least one edger 1. The roller table speed detector 4 is provided between at least one edger 1 and the entrance width meter 3. The hot piece detector 5 is provided between at least one edger 1 and the roller table speed detector 4. The rotational speed detector 6 is provided in at least one horizontal mill 2. The exit width meter 7 is provided on the downstream side of the horizontal mill 2.

  The input unit of the tracking device 8 is connected to the output unit of the roller table speed detector 4. The input unit of the tracking device 8 is connected to the output unit of the rotation speed detector 6.

  The control device 9 includes a path schedule determiner 9a, an edger leading end opening pattern generator 9b, an edger leading end opening controller 9c, an input side width actual data collector 9d, and an output side width actual data collector 9e. An edger leading end opening pattern corrector 9f and an edger leading end opening pattern correction corrector 9g are provided.

  In the first positive pass, the material to be rolled 10 is conveyed from the upstream side to the downstream side. The end on the upstream side of the material to be rolled 10 is defined as the tip. The downstream end of the material to be rolled 10 is defined as the tail end.

  When the hydraulic cylinder 1 b is hydraulically controlled in at least one edger 1, the roll 1 a opens and closes in the sheet width direction of the material to be rolled 10 to roll the material to be rolled 10 in the sheet width direction. At least one horizontal mill 2 rolls the material to be rolled 10 in the plate thickness direction by opening and closing in the plate thickness direction of the material 10 to be rolled.

  The entry side width meter 3 detects the actual sheet width of the material 10 to be rolled. The roller table speed detector 4 detects the speed of a roller table (not shown). The hot piece detector 5 detects the material to be rolled 10. The rotational speed detector 6 detects the rotational speed of at least one horizontal mill 2. The delivery width meter 7 detects the actual sheet width of the material to be rolled 10.

  The tracking device 8 generates tracking information of the transport position of the material to be rolled 10 based on the detection value of the roller table speed detector 4 and the detection value of the rotation speed detector 6.

  When the material to be rolled 10 reaches a preset position in the hot rolling line, the pass schedule determiner 9a receives hot rolling command information from a host computer (not shown). For example, the pass schedule determiner 9a receives steel type information. For example, the pass schedule determiner 9a receives information on the dimensions of the material 10 to be rolled before rolling. For example, the pass schedule determiner 9a receives information on the target dimension of the rolled material 10 after rolling. The pass schedule determiner 9a determines the rotation speed of the roll 1a and the opening degree of the roll 1a so that a product having a preset size is manufactured.

  For example, the pass schedule determiner 9a determines each opening based on information on the thickness and width of the material 10 before rolling and the target width of the material 10 after rolling in determining the opening degree of the roll 1a. The opening degree of the roll 1a is determined. At this time, the pass schedule determiner 9a determines the opening degree of the roll 1a with respect to the target plate width of the steady portion of the material to be rolled 10 in a preset pass.

  The edger leading end opening pattern generator 9b generates an edger leading end opening pattern so that the unsteady portion at the leading end of the material to be rolled 10 matches the target plate width. For example, the edger leading end opening pattern generator 9b includes a plurality of edger tips based on information on the steel type from the pass schedule determiner 9a and the sheet thickness, sheet width, and width reduction amount of the material to be rolled 10 before rolling. A specific edger tip end opening pattern is indexed from a numerical table storing information on the tail end opening pattern. For example, the edger leading end opening pattern generator 9b generates a specific edger leading end opening pattern based on a preset mathematical expression.

  The edger leading end opening controller 9c is based on the gap of the roll 1a determined by the path schedule determining unit 9a and the edger leading end opening pattern generated by the edger leading end opening pattern generator 9b. The opening degree of the roll 1a is controlled. The edger leading end opening controller 9c changes the opening degree of the edger 1 based on the edger leading end opening pattern at an appropriate position of the material to be rolled 10 based on the tracking information of the conveyance position of the material 10 to be rolled. Thus, a signal is transmitted to the hydraulic cylinder 1b.

  The entry side width result data collector 9d collects the detection values of the entry side width meter 3.

  The outgoing side width record data collector 9e collects the detection value of the outgoing side width meter 7.

  The edger leading end opening degree pattern corrector 9f calculates the entry side width deviation of the material to be rolled 10 based on the detection values collected by the entry side width record data collector 9d. The edger leading end opening pattern corrector 9f calculates an edger leading end opening pattern correction amount for the edger leading end opening controller 9c based on the incoming width deviation.

  The edger leading edge opening pattern correction corrector 9g includes the edger leading edge opening pattern generated by the edger leading edge opening pattern generator 9b and the detection value collected by the outgoing side width actual data collector 9e. An edger leading end opening degree pattern correction correction term for the edger leading end opening degree pattern corrector 9f is calculated based on the input side width deviation calculated by the edger leading end opening degree pattern corrector 9f.

Next, the edger leading end opening pattern corrector 9f will be described with reference to FIG.
FIG. 2 is a block diagram of an edger leading end opening pattern corrector of the edger control apparatus according to Embodiment 1 of the present invention.

The edger leading end opening degree pattern corrector 9f is based on the detection value collected by the entry side width record data collector 9d, and the entry side average plate width B ^ave (mm) at the center in the longitudinal direction of the material 10 to be rolled. Is calculated. Specifically, the entry-side average plate width B ^ave (mm) is calculated by the following equation (1).

However, L _head is an edger opening change end position at the front end of the material to be rolled 10 in the longitudinal direction. The unit of L _head is (mm). L _tail is an edger opening change start position at the tail end in the longitudinal direction of the material 10 to be rolled. The unit of L _tail is (mm). B _(x) is the entry side plate width in the longitudinal direction of the material to be rolled 10. The unit of B _(x) is (mm). x is a distance from the front-end | tip part of the longitudinal direction of the to-be-rolled material 10. FIG. The unit of x is (mm).

The edger leading end opening degree pattern corrector 9f is a performance plate of the tip end in the longitudinal direction of the material to be rolled 10 at a control point L _i obtained by dividing the longitudinal tip by applying an edger tip opening change at an arbitrary length. An entry-side width deviation Δω _Hi (mm) between the width B _Hi (mm) and the entry-side average plate width B ^ave (mm) is calculated. Specifically, the entry-side width deviation Δω _Hi (mm) is calculated by the following equation (2).

Edger destination tail opening pattern corrector 9f are longitudinal tail end of the longitudinal tail end to be rolled material 10 at the control point L _j divided by an arbitrary length of the application of edger tail opening degree variation The entry side width deviation Δω _Tj (mm) between the actual plate width B _Tj (mm) and the entry side average plate width B _ave (mm) is calculated. Specifically, the entry-side width deviation Δω _Tj (mm) is calculated by the following equation (3). However, j is from 1 to n.

Edger destination tail opening pattern corrector 9f is actual strip width B _{Hi (mm)} and the edger tip opening pattern correction correction term Z _OmegaHi and edger at the control point L _i based on the front end opening pattern correction amount [Delta] [omega _Hi ( mm). Specifically, the edger tip opening pattern correction amount ΔΩ _Hi (mm) is calculated by the following equation (4).

Edger destination tail opening pattern corrector 9f is actual strip width B _{Tj (mm)} and the edger tail end opening pattern correction correction term Z _OmegaTj edger tail opening pattern correction amount in the control point L _j on the basis of the ΔΩ _Tj (mm) is calculated. Specifically, the edger tail end opening pattern correction amount ΔΩ _Tj (mm) is calculated by the following equation (5).

Next, the edger leading end opening pattern correction corrector 9g will be described with reference to FIG.
FIG. 3 is a block diagram of the edger leading end opening pattern correction corrector of the edger control apparatus according to Embodiment 1 of the present invention.

The edger leading end opening degree pattern correction corrector 9g is based on the detected value collected by the exit width actual data collector 9e, and the average plate width B ′ at the center in the longitudinal direction of the material 10 after horizontal rolling. ^ave (mm) is calculated. Specifically, the average plate width B ′ ^ave (mm) is calculated by the following equation (6).

However, L ' _head is an edger opening change end position at the front end in the longitudinal direction of the material 10 after horizontal rolling. The unit of L ′ _head is (mm). L ′ _tail is an edger opening change start position at the tail end in the longitudinal direction of the material 10 after horizontal rolling. The unit of L ′ _tail is (mm). B ′ _(x) is the entry side plate width in the longitudinal direction of the material to be rolled 10. The unit of B ′ _(x) is (mm). x ′ is the distance from the tip of the material to be rolled 10 in the longitudinal direction. The unit of x ′ is (mm).

At this time, the edger opening change end position L ′ _{head at} the front end in the longitudinal direction of the material 10 to be rolled after horizontal rolling is calculated by the following equation (7).

Edger 1 opening change start position _L'tail in the longitudinal direction of the tail end of the rolled material 10 after horizontal rolling is calculated by the following equation (8).

The edger leading end opening pattern correction corrector 9g is the actual plate width B ′ _Hi (mm) at the front end in the longitudinal direction of the material 10 after horizontal rolling at the control point L ′ _i corresponding to the control point L _i . And an exit side plate width deviation Δω ′ _Hi (mm) between the center side and the exit side average plate width B ′ _ave (mm). Specifically, the exit side plate width deviation Δω ′ _Hi (mm) is calculated by the following equation (9).

At this time, the control point L ′ _i corresponding to the control point L _i is calculated by the following equation (10).

The edger leading end opening pattern correction corrector 9g has a result plate width B ′ _Tj (mm at the tail end in the longitudinal direction of the material 10 after horizontal rolling at the control point L ′ _j corresponding to the control point L _j . ) And the output side average plate width B ′ _ave (mm) of the central portion, the output side plate width deviation Δω ′ _Tj (mm) is calculated. Specifically, the exit side plate width deviation Δω ′ _Tj (mm) is calculated by the following equation (11).

At this time, the control point L ′ _j corresponding to the control point L _j is calculated by the following equation (12).

  In the pass where the actual plate width of the tail end portion of the material to be rolled 10 is not detected due to the equipment distance in the rough rolling process of the hot rolling line, the outgoing side plate width deviation is not calculated. Furthermore, the value regarding the tail end part of the subsequent to-be-rolled material 10 is not calculated.

Edger destination tail opening pattern correction modifier 9g may exit calculate the amount of side plate width deviation Δω' _{Hi (mm)} to contribute previous entry side width deviation Δω _{Hi (mm)} as edger tip opening pattern correction ratio amount To do. For example, the edger tip opening pattern correction ratio ΔΓ _Hi (mm) is a simple ratio of the previous side width deviation Δω _Hi (mm) to the edger tip opening change amount in the previous edger tip opening pattern. Specifically, the edger tip opening pattern correction ratio ΔΓ _Hi (mm) is calculated by the following equation (13).

However, ΔS _Hi is an edger tip opening change amount of the previous edger tip opening pattern. The unit of the edger tip opening change amount ΔS _Hi is (mm).

Edger destination tail opening pattern correction modifier 9g as edger tail opening pattern correction ratio amount the amount of delivery side width deviation Derutaomega' _Tj inlet side width of the previous contribute to _(mm) deviation [Delta] [omega _{Tj (mm)} calculate. For example, the edger tail end opening pattern correction ratio ΔΓ _Tj (mm) is a simple ratio of the previous entry side width deviation to the edger tip opening change amount in the previous edger tail end opening pattern. Specifically, the edger tail end opening pattern correction ratio ΔΓ _Tj is calculated by the following equation (14).

However, ΔS _Tj is the edger tail end opening change amount of the previous edger tail end opening pattern. Units of edger tail opening change amount [Delta] S _Tj is (mm).

Edger destination tail opening pattern correction modifier 9g calculates the edger tip opening pattern correction correction term Z _OmegaHi to optimize the edger tip opening pattern correction amount. Specifically, the edger tip opening pattern correction correction term _ZωHi is calculated by the following (15).

Edger tip opening pattern correction amount correction term Z _OmegaHi is multiplied edger tip opening pattern correction amount [Delta] [omega _Hi of the following material to be rolled 10. As a result, the edger tip opening pattern correction amount ΔΩ _Hi of the next material to be rolled 10 is calculated by the following equation (16).

However, _BnHi is the actual sheet width of the next material 10 to be rolled. The unit of B _nHi is (mm). B _n ^ave is the entry-side average plate width at the center in the longitudinal direction of the next material to be rolled 10. The unit of B _n ^ave is (mm).

Edger destination tail opening pattern correction modifier 9g calculates the edger tail opening pattern correction correction term Z _OmegaTj to optimize the edger tail opening pattern correction amount. Specifically, the edger tail end opening pattern correction correction term Z _ωTj is calculated by the following (17).

The edger tail end opening pattern correction amount correction term _ZωTj is multiplied by the edger tail end opening pattern correction amount ΔΩ _Tj of the next material to be rolled 10. As a result, the edger tail end opening pattern correction amount ΔΩ _Tj of the next material to be rolled 10 is calculated by the following equation (18).

However, B _nTj is the actual sheet width of the next material to be rolled 10. The unit of B _nTj is (mm). B _n ^ave is the entry-side average plate width at the center in the longitudinal direction of the next material to be rolled 10. The unit of B _n ^ave is (mm).

Next, the actual sheet width of the material to be rolled 10 detected by the entry side width meter 3 will be described with reference to FIG.
FIG. 4 is a diagram showing the actual sheet width of the material to be rolled used in the edger control apparatus according to Embodiment 1 of the present invention. The horizontal axis in FIG. 4 is the distance (mm) from the tip in the longitudinal direction of the material to be rolled 10. The vertical axis in FIG. 4 is the actual sheet width (mm) of the material 10 to be rolled.

  As FIG. 4 shows, the front-end | tip part of the longitudinal direction of the to-be-rolled material 10 before rolling, a center part, and a tail end part are set suitably. The entry side width meter 3 detects the actual sheet width (mm) of the front end portion in the longitudinal direction of the material to be rolled 10 before rolling at the control point Li. The entry side width meter 3 detects the actual sheet width (mm) of the tail end portion in the longitudinal direction of the material to be rolled 10 before rolling at the control point Lj. However, i and j are 1 to n. For example, n is set based on the response speed of the hydraulic cylinder 1b. For example, n is set based on the performance of various controllers.

Next, the actual sheet width of the material to be rolled 10 detected by the exit width meter 7 will be described with reference to FIG.
FIG. 5 is a diagram showing the actual sheet width of the material to be rolled used in the edger control apparatus according to Embodiment 1 of the present invention. The horizontal axis in FIG. 5 is the distance (mm) from the tip in the longitudinal direction of the material to be rolled 10. The vertical axis in FIG. 5 is the actual sheet width (mm) of the material 10 to be rolled.

  As FIG. 5 shows, the front-end | tip part, center part, and tail end part of the longitudinal direction of the to-be-rolled material 10 after rolling are the front-end | tip part, center part, and tail end of the to-be-rolled material 10 before rolling. It is set corresponding to the part. The exit width meter 7 detects the actual sheet width (mm) at the front end in the longitudinal direction of the rolled material 10 after rolling at the control point L′ i. The exit width meter 7 detects the actual sheet width (mm) of the tail end portion in the longitudinal direction of the material 10 after rolling at the control point L′ j.

Next, the edger tip opening and the edger tail opening will be described with reference to FIG.
FIG. 6 is a diagram showing an edger leading end opening pattern generated by the edger control device according to Embodiment 1 of the present invention. The horizontal axis of (a) of FIG. 6 is the distance (mm) from the front-end | tip of the longitudinal direction of the to-be-rolled material 10. FIG. The vertical axis in FIG. 6A is the edger tip opening pattern (mm) or the edger tip opening pattern correction amount (mm). The horizontal axis of FIG. 6B is the distance (mm) from the edger opening change start position of the tail end portion in the longitudinal direction of the material 10 to be rolled. The vertical axis in FIG. 6A is the edger tail end opening pattern (mm) or the edger tail end opening pattern correction amount (mm).

  As shown in FIG. 6A, the edger tip opening pattern correction amount (mm) is added to the edger tip opening pattern (mm) generated by the edger leading end opening pattern generator 9b. . As a result, a corrected edger tip opening pattern (mm) is newly set.

  As shown in FIG. 6B, the edger tail end opening pattern correction amount (mm) is added to the edger tail end opening pattern (mm) generated by the edger tail end opening pattern generator 9b. Is done. As a result, a corrected edger tail end opening pattern (mm) is newly set.

Next, the outline | summary of operation | movement of the control apparatus 9 is demonstrated using FIG.
FIG. 7 is a flowchart for explaining the outline of the operation of the edger control device according to the first embodiment of the present invention.

  In step S1, the control device 9 determines whether or not hot rolling command information has been received. When the control device 9 has not received the hot rolling instruction information in step S1, the control device 9 repeats the operation of step S1. When the control device 9 receives the hot rolling command information in step S1, the control device 9 performs the operation of step S2.

  In step S2, the control device 9 determines the opening degree of the roll 1a with respect to the target plate width of the steady portion of the material to be rolled 10 in a preset pass. Thereafter, the control device 9 performs the operation of step S3. In step S <b> 3, the control device 9 generates an edger leading end opening pattern so that the unsteady portion at the leading end of the material to be rolled 10 matches the target plate width. Thereafter, the control device 9 performs the operation of step S4.

  In step S <b> 4, the control device 9 changes the opening of the edger 1 based on the edger leading end opening pattern at an appropriate position of the material to be rolled 10 based on the tracking information of the conveyance position of the material to be rolled 10. A signal is transmitted to the hydraulic cylinder 1b. Thereafter, the control device 9 performs the operation of step S5.

  In step S5, the control device 9 calculates an edger leading end opening pattern correction amount. Thereafter, the control device 9 performs the operation of step S6. In step S6, an edger leading end opening pattern correction correction term is calculated. Thereafter, the control device 9 ends the operation.

  According to the first embodiment described above, the edger leading end opening pattern is automatically corrected based on the edger leading end opening pattern correction amount. The edger leading end opening pattern correction amount is automatically corrected based on the edger leading end opening pattern correction correction term. For this reason, in the next to-be-rolled material 10, the precision of the width dimension of a product can be improved. Furthermore, if the number of rolling increases, the edger leading end opening pattern correction correction term can be set more appropriately.

  According to the first embodiment, the edger leading end opening pattern is corrected based on the exit side width deviation of the material to be rolled 10 caused only by the entry side width deviation of the material to be rolled 10. For this reason, the width | variety fluctuation of the to-be-rolled material 10 resulting from the entrance side width | variety deviation of the to-be-rolled material 10 can be removed. For example, the factor that the plate width of the leading end portion of the material to be rolled 10 does not become the target plate width can be narrowed down to the edger other-end opening change pattern only.

Next, an example of the control device 9 will be described with reference to FIG.
FIG. 8 is a hardware configuration diagram of the edger control device according to the first embodiment of the present invention.

  Each function of the control device 9 can be realized by a processing circuit. For example, the processing circuit includes at least one processor 11a and at least one memory 11b. For example, the processing circuit comprises at least one dedicated hardware 12.

  When the processing circuit includes at least one processor 11a and at least one memory 11b, each function of the control device 9 is realized by software, firmware, or a combination of software and firmware. At least one of software and firmware is described as a program. At least one of software and firmware is stored in at least one memory 11b. At least one processor 11a implements each function of the control device 9 by reading and executing a program stored in at least one memory 11b. The at least one processor 11a is also referred to as a CPU (Central Processing Unit), a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, and a DSP. For example, the at least one memory 11b is a nonvolatile or volatile semiconductor memory such as a RAM, a ROM, a flash memory, an EPROM, or an EEPROM, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, a DVD, or the like.

  If the processing circuit comprises at least one dedicated hardware 12, the processing circuit is implemented, for example, as a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof. The For example, each function of the control device 9 is realized by a processing circuit. For example, each function of the control device 9 is collectively realized by a processing circuit.

  About each function of the control apparatus 9, a part is implement | achieved by the hardware 12 for exclusive use, and another part may be implement | achieved by software or firmware. For example, the function of the path schedule determiner 9a is realized by a processing circuit as the dedicated hardware 12, and for functions other than the path schedule determiner 9a, at least one processor 11a is stored in at least one memory 11b. May be realized by reading out and executing.

  In this way, the processing circuit realizes each function of the control device 9 by the hardware 12, software, firmware, or a combination thereof.

Embodiment 2. FIG.
FIG. 9 is a block diagram of an edger leading end opening pattern corrector of the control device for edger 1 according to Embodiment 2 of the present invention. In addition, the same code | symbol is attached | subjected to the same part as Embodiment 1, or an equivalent part. The description of this part is omitted.

The edger leading end opening degree pattern corrector 9f calculates the entry-side average plate width B _head ^ave (mm) of the material to be rolled 10 in the end portion vicinity section L _hm (mm) at the longitudinal center. Specifically, the entry side average plate width B _head ^ave (mm) is calculated by the following equation (19).

The edger leading end opening degree pattern corrector 9f calculates the entry-side average plate width B _tail ^ave (mm) of the material to be rolled 10 in the tail end vicinity section L _tm (mm) at the center in the longitudinal direction. Specifically, the entry side average plate width B _head ^ave (mm) is calculated by the following equation (20).

The edger leading end opening pattern corrector 9f calculates the absolute value of the deviation between the inlet side average plate width B _head ^ave (mm) and the inlet side average plate width B _tail ^ave (mm) (near tip end average width deviation ( mm). Specifically, the leading edge vicinity average width deviation (mm) is calculated by the following equation (21).

When the leading end vicinity average width deviation (mm) is less than k set in advance, the edger leading end opening pattern corrector 9f determines that the shape of the material to be rolled 10 is not tapered. For example, the edger leading end opening degree pattern corrector 9f determines that the shape of the material to be rolled 10 is a rectangular shape having a certain width deviation. In this case, the edger leading end opening pattern correction unit 9f calculates the edger tip opening pattern correction amount ΔΩ _Hi and the edger tail end opening pattern correction amount ΔΩ _Tj , as in the first embodiment.

When the leading end vicinity average width deviation (mm) is equal to or larger than k set in advance, the edger leading end opening pattern corrector 9f determines that the shape of the material to be rolled 10 is tapered. In this case, the edger leading end opening degree pattern corrector 9f has the actual plate width B _Hi (mm) at the front end in the longitudinal direction of the material to be rolled 10 at the control point L _i and the entry side average plate width of the material to be rolled 10. An entry side width deviation Δω _Hi (mm) with respect to B _head ^ave (mm) is calculated. Specifically, the entry-side width deviation Δω _Hi (mm) is calculated by the following equation (22).

If previously tail edge near the average width deviation is more than k which is set in advance, edger destination tail opening pattern corrector 9f is inlet side width results in the longitudinal direction of the tail end of the rolled material 10 at the control point L _j An entry-side width deviation Δω _Tj (mm) between the value B _Tj (mm) and the entry-side average sheet width B _tail ^ave (mm) of the material to be rolled 10 is calculated. Specifically, the entry-side width deviation Δω _Tj (mm) is calculated by the following equation (23).

When the leading end vicinity average width deviation is equal to or larger than k set in advance, the edger leading end opening pattern corrector 9f uses the entrance side width deviation Δω _Hi (mm) in the equation (22) to set the edger tip opening. The pattern correction amount ΔΩ _Hi is calculated. The edger leading end opening pattern corrector 9f calculates the edger tail end opening pattern correction amount ΔΩ _Tj by using the entry-side width deviation Δω _Tj (mm) of equation (23).

Next, the actual sheet width of the material to be rolled 10 detected by the entry side width meter 3 will be described with reference to FIG.
FIG. 10 is a diagram showing the actual sheet width of the material to be rolled used in the edger control device according to Embodiment 2 of the present invention. The horizontal axis in FIG. 10 is the distance (mm) from the tip in the longitudinal direction of the material to be rolled 10. The vertical axis in FIG. 10 is the actual sheet width (mm) of the material 10 to be rolled.

As FIG. 10 shows, the front-end | tip part of the longitudinal direction of the to-be-rolled material 10 before rolling, a center part, and a tail end part are set suitably. The _front end vicinity section L _hm (mm) at the longitudinal center and the tail end vicinity section L _tm (mm) at the longitudinal center are set as appropriate.

  In FIG. 10, the plate width of the material 10 to be rolled becomes wider as it goes from the tip to the tail. At this time, if the leading end vicinity average width deviation (mm) of the equation (21) is equal to or larger than a preset k, the rolled material 10 is determined to be tapered.

  According to the second embodiment described above, the edger leading end opening pattern correction amount differs between the case where the shape of the material to be rolled 10 is not tapered and the case where the shape of the material to be rolled 10 is tapered. Calculated by the method. For this reason, even when the shape of the material to be rolled is tapered, it is possible to extract only the entry-side width deviation and cancel the deviation.

  As described above, the edger control device according to the present invention can be used in a system for improving the accuracy of the width dimension of a product.

  DESCRIPTION OF SYMBOLS 1 Edger, 1a roll, 1b Hydraulic cylinder, 2 Horizontal mill, 3 Entry side width meter, 4 Roller table speed detector, 5 Heat piece detector, 6 Rotational speed detector, 7 Outlet width meter, 8 Tracking device, 9 Control device, 9a path schedule determiner, 9b edger leading end opening pattern generator, 9c edger leading end opening controller, 9d entry width actual data collector, 9e exit width actual data collector, 9f edger Leading edge opening pattern corrector, 9g edger leading edge opening pattern correction corrector, 10 material to be rolled, 11a processor, 11b memory, 12 hardware

Claims (2)

A path schedule determiner that determines the gap of the roll of the edger based on the thickness and width of the material to be rolled before rolling and the target plate width of the material to be rolled after rolling;
An edger leading end opening pattern generator that generates an edger leading end opening pattern so that the unsteady portion of the leading end of the material to be rolled matches the target plate width based on information from the pass schedule determiner. When,
The opening degree of the edger roll is controlled based on the gap of the edger roll determined by the path schedule determiner and the edger leading end opening pattern generated by the edger leading end opening pattern generator. An edger leading end opening controller to
An entry-side width record data collector for collecting the detected value of the record sheet width of the material to be rolled on the entry side of the edger;
A delivery width actual data collector for collecting the detected value of the actual strip width of the material to be rolled on the delivery side of the edger;
An entry side width deviation is calculated based on the detected value of the actual sheet width of the material to be rolled collected by the entry side width record data collector, and the edger leading end opening controller is calculated based on the entry side width deviation. An edger leading end opening pattern correction unit for calculating an edger leading end opening pattern correction amount for
Edger leading edge opening pattern generated by the edger leading edge opening pattern generator, actual plate width detection value of the rolled material collected by the outlet width actual data collector, and the edger leading edge Edger leading end opening pattern correction correction for calculating an edger leading end opening pattern correction correction term for the edger leading end opening pattern correction unit based on the input side width deviation calculated by the opening pattern correction unit. The authentic instrument,
An edger control device comprising:   The edger leading end opening pattern corrector is such that the shape of the material to be rolled is tapered based on the entry side width deviation based on the detected value of the actual sheet width of the material to be rolled collected by the entry side width result data collector. The edger leading edge to the edger leading edge opening controller is different in a case where the shape of the material to be rolled is not tapered and a case where the shape of the material to be rolled is tapered. The edger control device according to claim 1, wherein the opening pattern correction amount is calculated.

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