JPH06226317A - Device and method for operating rolling mill - Google Patents

Abstract

(57) [Abstract] [Purpose] In the operating device and operating method of a rolling mill, it is possible to perform advanced strip crown and shape control by manual operation by an operator. [Structure] In a 6-high rolling mill comprising a work roll 1, an intermediate roll 2 and a reinforcing roll 3, a work roll bender 4, an intermediate roll bender 5, and an axially moving device 6 for the intermediate roll are used as plate crown shape control means. To provide.
A work roll bender control device 7, an intermediate roll bender control device 8, an axial direction control device 9, an arithmetic unit 10, and a control panel 11 are provided in order to adjust the control amounts of these control means 4, 5, and 6, and the control panel 11 is provided. On the top is a plate crown or a specific pattern of shape, concave 16, convex 17, M-shaped 18, W
The mold 19 is displayed, and as the operation end corresponding to each specific pattern, the operation button 12 for the concave type, the operation button 13 for the convex type, the operation button 14 for the M type,
The operation button 15 is installed for the W type.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating device and an operating method of a rolling mill for rolling sheet material, and particularly to an operating device and operation of a rolling mill suitable for an operator to easily roll a sheet material of good quality. Regarding the method.

[0002]

2. Description of the Related Art Demands for improving the thickness accuracy of rolled products in the plate width direction are increasing year by year, and in order to meet this demand, rolling mills capable of highly controlling the plate crown and shape, for example, moving intermediate rolls in the axial direction. Various new types of rolling mills have been developed, such as a rolling mill in which this is combined with a work roll bender, and a rolling mill in which work rolls can be crossed horizontally. By applying these rolling mills to the steel strip rolling equipment, the control range of the plate crown and shape is significantly increased, and further, the control of the composite plate crown and shape of W type and M type becomes possible. And has a great effect on improving the thickness accuracy in the width direction.

On the other hand, the operation end of these rolling mills controlled by the operator is conventionally only the work roll bender, but the axial roll position of the intermediate roll, the intermediate roll bender, and the axial roll position of the work roll. In addition, the intersection position of the upper and lower work rolls is added, and it is an extremely complicated operation end, and it was not easy for the operator to set an appropriate control amount at each operation end at the same time, and it was almost difficult. . In order to deal with this, the following method has been conventionally used.

The amount of operation required for a given rolling is previously calculated or experimentally checked for each operating end, and each operating end is preset by these operating amounts to start rolling. If the plate crown and shape of the rolled material are insufficient,
The operator operates only the work roll bender, or operates the work roll bender to check the effect of the work roll bender, and if insufficient, operates the other operation end, for example, the intermediate roll bender, and then the effect If it is still insufficient, the work roll bender and the other operating end are operated again, and these are repeated to obtain a predetermined plate crown and shape.

On the other hand, JP-A-60-158908,
As described in JP-A-3-133509, etc., a plate profilometer and a shape sensor are installed, and these sensing values are used for feedback control, and a computer automatically controls the plate crown and the shape, thereby completely unattended. It is also considered to try to achieve

[0006]

However, the above-mentioned prior art has the following problems.

In the prior art in which the operator operates the operating end of the rolling mill, the method of limiting the operating end to only the work roll bender allows the operator to concentrate only on the work roll bender and quickly respond. However, the work roll bender alone cannot correct the composite crown and the composite shape, and even if the rolling mill has the composite correction capability, it is difficult to fully exhibit the capability.

According to the method of successively operating each operating end, it is theoretically possible to correct the composite crown or the composite shape, but it is necessary to successively confirm the correction effect of each operating end, which is a quick response. Will be difficult. Therefore, there is a problem that it takes a very long time to obtain a sufficient correction effect, and in the end, the ability of the rolling mill cannot be fully exerted.

In the prior art in which the sensing value is used to control the plate crown and shape by a computer in a completely automatic manner, it is impossible to completely unmanner the current plate profilometer and shape sensor with the accuracy and response speed. The existence of operators is indispensable.

As described above, all of the prior arts have difficulties in advanced control of the strip crown and shape, and have reached a situation in which the ability of the rolling mill capable of highly controlling the strip crown and shape is fully exhibited. Not in.

An object of the present invention is to provide an operating device and an operating method for a rolling mill which enables a high degree of sheet crown and shape control by manual operation by an operator.

[0012]

In order to achieve the above object, the present invention provides a rolling mill operating apparatus having a plurality of control means for controlling the plate crown or plate shape of a plate material, and specifying the plate crown or plate shape. A control panel displaying a pattern, an operating end operated by an operator to transmit a signal corresponding to the specific pattern, and a control amount of each of the plurality of control means are calculated from the signals corresponding to the specific pattern to correspond to them. There is provided an operating device for a rolling mill, comprising: an arithmetic unit that transmits a signal; and a control device that adjusts a control amount of each of the plurality of control means according to a signal from the arithmetic unit.

In the above operating apparatus, preferably, the plate crown of the plate material displayed on the control panel or the specific pattern of the plate shape is a concave type, a convex type, a W type, an M type or a combination thereof.

The operation end may be a plurality of operation buttons arranged corresponding to a plate crown of a plate material or a specific pattern of the plate shape displayed on the control panel, or one operation lever. It may be configured to have means for transmitting a signal corresponding to a plurality of specific patterns by the operation lever.

In the above operating apparatus, the plurality of control means may be axial movement means for the work roll bender and the intermediate roll, or axial movement means for the work roll bender and the work roll. However, it may be an axial moving means for the work roll bender, the intermediate roll bender, and the intermediate roll, or a means for controlling the chock positions of the upper and lower work rolls intersecting the work roll bender.

Further, in order to achieve the above object, the present invention is a method of operating a rolling mill, wherein a specific pattern close to a pattern to be added to the plate crown or plate shape is corrected in order to correct the plate crown or plate shape. Heading from the above display, by operating the operation end according to the display, a signal corresponding to the specific pattern is transmitted to the arithmetic unit, and the control amount of each of the plurality of control means is adjusted. A method of operating a rolling mill is provided.

[0017]

As a result of the study by the inventors of the present application, the following has been found. One of the reasons why rolling mills with advanced strip crown or shape control ability cannot be fully exerted by the operator's manual correction is that the operator's recognition of the strip crown or shape and the function of the operating end of the rolling equipment for the purpose of correction. There is a gap between and and there is not sufficient consistency. In the conventional rolling mill, the work roll bender is the only operating end for the plate crown or shape control.Therefore, in order to correct this with an edge-extended or excessive convex crown, the opposite direction, that is, the sheet shape is medium-elongated. Alternatively, it could be corrected by increasing the work roll bending force so that it becomes a concave crown. In this case, the operator recognizes that the plate crown or shape to be corrected is a concave / convex plate crown or medium / edge extension, and the work roll bending force is the same as the concave / convex plate crown / medium. It corresponds to the elongation and edge elongation, and the operator's recognition of the plate crown or shape, the correction purpose, and the function of the operating end were sufficiently consistent. On the other hand, in a rolling mill that has been developed in recent years and is capable of highly controlling the shape, there are a plurality of operating ends, and all of them have work roll bending force, intermediate roll bending force,
It is an operation end of mechanical force or a structural position such as an intermediate roll axial position, a work roll position, and a chocks position of intersecting work rolls, and is not directly related to the plate crown or the shape. In other words, in this case, the plate crown or shape is determined by a combination of these mechanical forces and structural positions, so even if the operator tries to correct the plate crown or shape, it is intuitive to know what operation end should be and how. I don't know and I can't fix it. For this reason, there is no other way but to limit the operating end operated by the operator, or to operate the operating end sequentially by trial and error, and it was not possible to sufficiently exert the plate crown or shape correcting ability of the rolling mill. .

To solve this, it is necessary to have an operating end that matches the operator's recognition of the plate crown or shape and the purpose of correction.

The present invention is based on the above-mentioned examination results, a control panel displaying a specific pattern of a plate crown or a plate shape, an operating end operated by an operator and transmitting a signal corresponding to the specific pattern, and a specific pattern. A computing unit that computes the respective control amounts of the plurality of control units from the corresponding signals and sends the corresponding signals, and a control device that adjusts the respective control amounts of the plurality of control units according to the signals from the computing units. Is provided in the driving device, and the operator finds a specific pattern close to the pattern to be added to the plate crown or the plate shape from the display on the control panel to correct the plate crown or the plate shape, and according to the display, By operating the operation end, a signal corresponding to the specific pattern is transmitted to the arithmetic unit, and the arithmetic unit calculates the minute control amount of each control means. The control amount of the control means is adjusted. That is, each control means is controlled, and the plate crown or shape changes in accordance with the correction purpose of the operator.
If the operator determines that the correction is insufficient after the correction, the operator may repeat the operation again.

As described above, when the operator recognizes the plate crown or the shape and corrects the plate crown or the shape, the plate crown or the shape can be easily corrected because there is an operation end that matches the purpose. As a result, the rolling crown or shape correction ability of the rolling mill can be fully exerted even by the manual control of the operator, and further the quality of the rolling stock can be greatly improved.
It is possible to improve the efficiency of operation.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. 1 and 2, the rolling mill according to this embodiment is a 6-high rolling mill having a roll configuration of a work roll 1, an intermediate roll 2 and a reinforcing roll 3, and a work roll bender 4 as a plate crown and shape control means. An intermediate roll bender 5 and an intermediate roll moving device 6 are provided. As the work roll bender 4 and the intermediate roll bender 5, for example, a normal hydraulic pressing device (for example, a hydraulic jack) can be used, and as the axial direction moving device 6 for the intermediate roll, for example, a normal electric motor and a position detecting device (for example, rotation). An encoder for angle detection or a magnet scale) can be used. The work roll bender 4 is controlled by the work roll bender control device 7, and the intermediate roll bender 5 is controlled by the intermediate roll bender control device 8 so that the bending force becomes a command value. When the roll bender is a hydraulic jack, the hydraulic pressure is controlled. The axial direction moving device 6 of the intermediate roll is controlled by the axial direction control device 9 so that the axial position becomes a command value. When the position detecting device is a rotation angle detecting encoder, the rotation angle is controlled so as to have a predetermined rotation angle.

First, in the control means 4, 5, 6, only the work roll bender 4 and the intermediate roll bender 5 having high responsiveness are interlocked with the operation of the operator, and the axially moving device for the intermediate roll having relatively low responsiveness. No. 6 will be described with reference to FIG. 1 in the case of setting and rolling in advance.

The work roll bender controller 7 and the intermediate roll bender controller 8 are connected to the arithmetic unit 10 and receive a command signal from the arithmetic unit 10. The computing unit 10 is the control panel 1
1 is connected to the control panel 11 to receive a concave type, convex type, W type, or M type signal, and the control amounts of the respective control means 4 and 5 are calculated so as to correspond thereto, and the control devices 7 and 8 Send that signal to.

On the control panel 11, for example, a concave mold 16, a convex mold 17, an M mold 18, and a W mold 19 which are normally recognized by the operator as a plate crown or a specific pattern of the shape are displayed.
As the operation end corresponding to each specific pattern, the operation button 12 for the concave type, the operation button 13 for the convex type,
The operation button 14 is installed for the M type, and the operation button 15 is installed for the W type.

As shown in FIG. 3, the plate crown is a concave type when it is concave (concave crown), a convex type when it is convex (convex crown), an M type and a W type (W when it is M type (M type crown)). Shaped crown), W-shaped pattern, concave shape for medium extension, convex shape for edge extension, M for edge extension.
In case of mold and quarter growth, W pattern is used.

The arithmetic unit 10 determines the control amounts of the respective control means 4, 5, 6 in order to realize the specified specific pattern. Although various methods can be considered for this method, the following method can be given as an example. Thickness distribution h in the width direction after rolling
(X) is generally expressed as follows.

H (x) = f (x, g ₁ , g ₂ , ..., P, B, R, ...) (1) where x is the distance in the width direction from the plate center, g ₁ , g ₂ , …
Is a control amount of each control means (for example, work roll bending force, intermediate roll bending force, ...), P is rolling load, B is plate width, and R is roll radius. The equation (1) may be obtained by calculation or may be obtained in advance by experiments. In order to calculate four types of plate crowns or shapes of concave type, convex type, M type, and W type by the formula (1), for example, the plate thickness h0 at the center in the plate width direction, the plate thickness h7 of 70% plate width, and the plate width 90.
The plate thickness h9 of% is obtained, and the following parameters are created from these.

Chq = h7-h0 (2) Che = h9-h7 (3) From these parameters, Chq> 0 and Che> 0 are concave, C
hq <0, Che <0 is convex type, Chq> 0, Che <0 is M type,
Chq <0 and Che> 0 can be made to correspond to the W type.
Assuming that the minute control amounts of the control means 4 and 5 are Δg ₁ and Δg ₂ , the change amount Δh (x) of the plate thickness is as follows.

[0029]

[Equation 1]

Therefore, the minute control amounts are set to Δg ₁ and Δg ₂
The parameter changes ΔChq and ΔChe with respect to can be expressed as follows.

[0031]

[Equation 2]

From equation (5), the minute control amounts can be calculated as Δg ₁ , Δg
_{From 2,} it is possible to calculate the parameter changes ΔChq and ΔChe. The following equation is obtained by reversing the simultaneous equations of equation (5).

[0033]

[Equation 3]

From the equation (6), the change amount of the parameter ΔChq
, ΔChe, the minute control amounts Δg ₁ and Δg ₂ can be calculated. The shape and the plate crown have a one-to-one correspondence, and the above can be said for both.

The switch signal when the operation buttons 12 to 15 of the specific patterns 16 to 19 on the control panel 11 are pressed once is set to ΔChq = for the operation button 12 of the concave type 16 by using a positive minute number α. α, ΔChe = α, ΔChq = −α, ΔChe = −α for the operation button 13 of the convex type 17, ΔChq = α, ΔChe = −α, W for the operation button 14 of the M type 18
ΔChq = -α, ΔChe for the operation button 15 of the mold 19
= Α is output, the calculation of the equation (6) is executed by the arithmetic unit 10, and the minute control amounts Δg ₁ and Δg of the control means 4 and 5 are obtained.
₂ is obtained.

The operator of the rolling mill thus constructed can easily correct the strip crown or the shape as described below.

The operator determines whether the current plate crown or shape is concave, convex, M-type, or W-type by a plate profilometer, a shape sensor, or visually, and determines whether or not the correction is necessary. When it is determined that the correction is necessary, the operator presses any one of the operation buttons 12 to 15 of the concave mold 16, the convex mold 17, the M mold 18, and the W mold 19 to correct the current plate crown or shape. At this time, the calculator 10 calculates the control amount of each of the control means 4 and 5 from the signal of the specific pattern by the method already described.

There are other methods for calculating the controlled variable. For example, by pressing the operation button, the calculator 10 outputs a command signal for adjusting the position in the intermediate roll axis direction to the plate edge,
With respect to the operation button 12 of the concave type 16, a command signal for increasing the work roll bending force Akg and the intermediate roll bedding force of 2 Akg in the calculator 10, and the operation button bending force of the convex type 17 in the calculator 10 for the calculating unit 10. Command signal to decrease Akg, decrease intermediate roll bedding force 2Akg, command signal for operation button 14 of M-type 18 in the calculator 10, command signal to decrease work roll bending force Akg, increase intermediate roll bedding force 2Akg, operation of W-type 19. Compared to the button 15, the calculator 10 reduces the work roll bending force Akg and the intermediate roll bedding force 2A.
A simple method of outputting a command signal for increasing kg may be used. Other methods are also possible, and the arithmetic unit 10
The essence of the present invention does not differ due to the difference in the calculation contents of.

In response to the signal from the arithmetic unit 10, the work roll bender control device 7 and the intermediate roll bender control device 8 control the work roll bender 4 and the intermediate roll bender 5 in accordance with a predetermined specific pattern. In this way, the strip crown or shape matches the operator's recognition and the purpose of correction, and even with manual control by the operator, the strip crown or shape correction ability of the rolling mill can be fully exerted, and further the quality of the strip material can be significantly improved. It is possible to improve the efficiency of operation.

Next, a case where all the control means 4, 5, 6 and the operation of the operator are interlocked will be described with reference to FIG.

The work roll bender control device 7, the intermediate roll bender control device 8 and the axial direction control device 9 are the arithmetic unit 10.
And receives a command signal from the arithmetic unit 10. The arithmetic unit 10 is connected to the control panel 11 shown in FIG.
1 to receive any one of the concave type, convex type, W type, M type, ∪ type, and ∩ type signals, and the control means 4 corresponding to them.
The control amounts of 5, 6 are calculated, and the signals are sent to the control devices 7, 8, 9. On the control panel 11, as a plate crown or a specific pattern of the shape, a concave mold 16, a convex mold 17, an M mold 18, W
The mold 19, the ∪ type 16a, and the ∩ type 17a are displayed. The operation button 12 for the concave type, the operation button 13 for the convex type, and the operation button 14 for the M type are displayed as the operation end corresponding to each specific pattern. Operation button 1 for mold
5, the operation button 12a is installed for the ∪ type, and the operation button 13a is installed for the ∩ type.

As described above, the plate crown is concave when it is concave (concave crown), convex when it is convex (convex crown), M-shaped when it is M-shaped (M-shaped crown), and W-shaped (W-shaped crown). ) Is a W-shaped pattern, the shape is concave when the extension is medium, convex when the edge is extended, and M when the edge is extended.
In case of mold and quarter growth, W pattern is used. Furthermore, if the edge thickness distribution in the width direction is edge-up, a ∪-type pattern and an edge-drop pattern are ∩-type patterns.

The arithmetic unit 10 determines the control amounts of the respective control means 4, 5, 6 in order to realize the specified specific pattern.

In order to calculate six types of plate crowns or shapes of concave type, convex type, M type, and W type by the formula (1), for example, the plate thickness h0 at the center in the plate width direction, the plate thickness h6 at the plate width of 60%, Board width 8
A plate thickness h8 of 0% and a plate thickness h9 of 90% width are obtained, and the following parameters are created from these.

Chq = h6-h0 (7) Che = h8-h6 (8) Chn = h9-h8 (9) From these parameters, Chq> 0 and Che> 0 are concave, C
hq <0, Che <0 is convex type, Chq> 0, Che <0 is M type,
Chq <0, Che> 0 correspond to W type, Chn> 0 ∪
The type, Chn <0, can correspond to the ∩ type. The minute control amounts of the respective control means 4, 5, 6 are Δg ₁ , Δg ₂ , Δg ₃
Then, the change amount Δh (x) of the plate thickness is as follows.

[0046]

[Equation 4]

Therefore, the minute control amount is set to Δg ₁ , Δ
Parameter changes ΔChq and ΔCh for g ₂ and Δg ₃
e and ΔChn can be expressed as follows.

[0048]

[Equation 5]

From equation (11), the minute control amounts can be calculated as Δg ₁ , Δ
From g ₂ and Δg ₃ , the amount of parameter change ΔChq, ΔChe,
ΔChn can be calculated. By solving the simultaneous equations of the equation (11) in reverse, the following equation is obtained.

[0050]

[Equation 6]

The change amount ΔCh of the parameter is calculated by the equation (12).
From q, ΔChe, and ΔChn, minute control amounts Δg ₁ , Δg ₂ , and Δ
g ₃ can be calculated.

One switch signal corresponding to a specific pattern on the control panel is used by using a small positive number α and ΔCh when the concave type is used.
q = α, ΔChe = α, ΔChn = 0, convex type ΔChq = −
α, ΔChe = -α, ΔChn = 0, M type ΔChq = α,
ΔChe = −α, ΔChn = 0, W-type ΔChq = −α, Δ
Che = α, ΔChn = 0, ∪ type ΔChq = 0, ΔChe =
0, ΔChn = α, ∩ type ΔChq = 0, ΔChe = 0, Δ
If Chn = -α is output, the calculation of the equation (12) is executed by the arithmetic unit, and the minute control amount Δg of each control means 4, 5, 6
₁ , Δg ₂ and Δg ₃ are obtained.

The operator can easily correct the strip crown or the shape as described below by using the rolling mill operating apparatus thus constructed. The operator uses a plate profilometer, a shape sensor, or a visual check to find that the current plate crown or shape is concave, convex, or M.
Type, W type, ∪ type, or ∩ type is discriminated to judge whether or not the correction is necessary. When it is determined that the correction is necessary, the operator corrects the current plate crown or shape by using the concave mold 16, the convex mold 17, the M mold 18, the W mold 19, and the ∪ mold 16.
a, ∩ type 17a operation button 12 to 15, 1
Press 2a and 13a. At this time, the signals of the specific pattern and the contents of the arithmetic operation of the arithmetic unit 10 are used to calculate the control amounts of the respective control means 4, 5 and 6.

In response to a signal from the arithmetic unit 10, the axial direction control device 9, the work roll bender control device 7, and the intermediate roll bender control device 8 respond to a predetermined specific pattern by the intermediate roll axial movement device 6 and work. Roll bender 4,
Control the intermediate roll bender 5. In this way, the strip crown or shape matches the operator's recognition and the purpose of correction, and even with manual control by the operator, the strip crown or shape correction ability of the rolling mill can be fully exerted, and further the quality of the strip material can be significantly improved. It is possible to improve the efficiency of operation.

The specific pattern of the plate crown or shape is not limited to the concave, convex, M-shaped, and W-shaped patterns described above, and a concave M-shaped, concave W-shaped, convex M-shaped, convex W-shaped in which these patterns are combined. There is also such a thing, and it is possible to express it by a character or another symbol without paying attention to this symbol. Further, as the operation end, an operation switch or other lever can be used instead of the operation button. In any case, the essence of the invention is not different from the invention.

A second embodiment of the present invention will be described with reference to FIGS.

In FIG. 4, the rolling mill according to the present embodiment is a 6-high rolling mill having a roll constitution of a work roll 1, an intermediate roll 2 and a reinforcing roll 3, and a work roll bender as a means for controlling the plate crown and shape. 4, an intermediate roll bender 5, and an intermediate roll axial movement device 6 are provided. The work roll bender 4 is controlled by the work roll bender controller 7, and the intermediate roll bender 5 is controlled by the intermediate roll bender controller 8 so that the bending force becomes a command value. The axial direction moving device 6 of the intermediate roll is controlled by the axial direction control device 9 so that the axial position becomes a command value. The work roll bender control device 7, the intermediate roll bender control device 8 and the axial direction control device 9 are connected to the arithmetic unit 10 and receive a command signal from the arithmetic unit 10. Calculator 10
Is connected to the control panel 11, and the concave type, the convex type,
It receives either the W type signal or the M type signal, calculates the control amounts of the respective control means 4, 5, 6 so as to correspond to it, and sends the signal to the control devices 7, 8, 9.

On the control board 11, a concave mold 16, a convex mold 17, an M mold 18, a plate crown or a specific pattern of the shape,
The W type 19 is displayed, and the operation lever 20 is installed as an operation end corresponding to each specific pattern. Operating lever 2
As shown in FIGS. 5 and 6, 0 is held on the wall of the case by four springs 40 and rotatably supported at the bottom of the case.
It can be tilted back and forth, left and right, and diagonally. Also,
The operation end has an X sensor 41 and a Y sensor 42. The X sensor 41 can measure the forward displacement x of the operation lever 20, and the Y sensor 42 can measure the operation lever 20.
The displacement y to the right of can be measured. If the magnitude of the tilt amount of the operating lever 20 and the above-mentioned positive minute number α are associated in a one-to-one manner, the control amount of the control means 4, 5, 6 is adjusted by manually adjusting the tilt amount of the operator. it can.

For example, the above-mentioned parameters ΔChq and ΔChe can be associated with the directions in which the operating lever 20 is tilted forward and backward and left and right. The forward direction is the x-axis, the right direction is the y-axis, and the cosine with the tilting direction of the operation lever 20 is β _x , β
_{Let y} be the relation as in the following equation.

[0060]

[Equation 7]

The amount of tilt by the operator is defined as √ (x ² + y ² ), and has a one-to-one correspondence with α.

As a result, the operator is concave, convex, M
It is possible to modify not only the mold and the W-shape but also an intermediate specific pattern, and the degree of the modification can be adjusted by the operation lever 20. The signals from the control panel 11 need only be x and y, and the processing of equation (13) may be performed by the arithmetic unit 10.

The operator can easily correct the strip crown or the shape as described below by using the rolling mill operating apparatus thus constructed.

The operator determines whether the current plate crown or shape is concave, convex, M-shaped, W-shaped, or any one of these by a plate profilometer, a shape sensor, or visually, and determines whether or not the correction is necessary. When it is determined that the correction is necessary, the operator operates the operation lever 20.
Press in the direction to correct the current plate crown or shape at an angle that matches the degree of the correction. At this time, for the signal of the specific pattern and the calculation content of the calculator 10, the method as described above may be used. In response to a signal from the arithmetic unit 10, the axial direction control device 9, the work roll bender control device 7, and the intermediate roll bender control device 8 respond to a predetermined specific pattern by the intermediate roll axial movement device 6 and the work roll bender 4 respectively. , The intermediate roll bender 5 can be controlled.

In this way, the strip crown or shape matches the operator's recognition and the purpose of correction, and the sheet crown or shape correction capability of the rolling mill can be sufficiently exerted even by the manual control of the operator, and further, the quality of the strip material. Can be significantly improved, and the efficiency of operation can be improved.

The third embodiment of the present invention will be described with reference to FIG.

In FIG. 7, the rolling mill according to the present embodiment is a 6-high rolling mill having a roll constitution of a work roll 1, an intermediate roll 2 and a reinforcing roll 3, and a work roll bender 4 as a plate crown shape control means. And an intermediate roll axial movement device 6 is provided. Work roll bender 4
Is controlled by the work roll bender control device 7 so that the bending force becomes the command value, and the axial direction moving device 6 of the intermediate roll is controlled by the axial direction control device 9 so that the axial position becomes the command value. The work roll bender control device 7 and the axial direction control device 9 are connected to the arithmetic unit 10 and receive a command signal from the arithmetic unit 10. The computing unit 10 is the control panel 1
1 is connected to the control panel 11 to receive a concave type, convex type, ∪ type or ∩ type signal, calculate the control amounts of the respective control means 4 and 6 so as to correspond thereto, and control devices 7, 9 Send that signal to.

On the control panel 11, a concave pattern 16, a convex pattern 17, a ∪ pattern 23, as a plate crown or a specific pattern of the shape,
The ∩ type 24 is displayed, and the operation end corresponding to each specific pattern is the operation button 12 for the concave type, the operation button 13 for the convex type, and the operation button 21 for the ∪ type.
However, the operation button 22 is installed for the ∩ type.
Here, the plate crown is a concave shape when it is concave (concave crown), a convex shape when it is convex (convex crown), a ∪ pattern when it is an edge-up shape, and a ∩ shape pattern when it is an edge drop shape, and the shape is a medium extension. Sometimes it is concave, when it is extended, it is convex,
A ∪ pattern is used for the edge-up pattern, and a ∩ pattern is used for the edge drop pattern.

The operator can easily correct the strip crown or the shape by using the rolling mill operating device thus constructed, as described below.

The operator determines whether the current plate crown or shape is concave, convex, ∪-type or ∩-type by a plate profilometer, a shape sensor or visually, and judges whether or not the correction is necessary. When it is determined that the correction is necessary, the operator presses any one of the concave 16, convex 17, ∪ type 23 and ∩ type 24 operation buttons to correct the current plate crown or shape. At this time, for the signal of the specific pattern and the calculation content of the calculator 10, the method as described above may be used. In response to the signal from the arithmetic unit 10, the axial direction control device 9 and the work roll bender control device 7 can control the intermediate roll axial movement device 6 and the work roll bender 4 in accordance with a predetermined specific pattern.

In this way, the strip crown or shape matches the operator's recognition and the purpose of correction, and the sheet crown or shape correction ability of the rolling mill can be sufficiently exerted even by the manual control of the operator, and further, the quality of the strip material. Can be significantly improved, and the efficiency of operation can be improved.

A fourth embodiment of the present invention will be described with reference to FIG.

In FIG. 8, the rolling mill according to the present embodiment is a four-high rolling mill having a roll configuration of a work roll 1 and a reinforcing roll 3, and the work roll bender 4 and the work roll are used as plate crown shape control means. Axial movement device 30
Is provided. The work roll bender 4 is controlled by the work roll bender control device 7 so that the bending force becomes the command value, and the work roll axial movement device 30 is controlled by the axial direction control device 31 so that the axial position becomes the command value. To be done. The work roll bender control device 7 and the axial direction control device 31 are connected to the arithmetic unit 10 and receive a command signal from the arithmetic unit 10. The arithmetic unit 10 is connected to the control panel 11, receives any one of a concave type, a convex type, a ∪ type, and a ∩ type signal from the control panel 11, and calculates the control amounts of the respective control means 4 and 30 correspondingly. , Sends the signal to the controller 7, 31.

On the control panel 11, a concave pattern 16, a convex pattern 17, a ∪ pattern 23, as a plate crown or a specific pattern of the shape,
The ∩ type 24 is displayed, and the operation end corresponding to each specific pattern is the operation button 12 for the concave type, the operation button 13 for the convex type, and the operation button 21 for the ∪ type.
However, the operation button 22 is installed for the ∩ type.

The operator can easily correct the strip crown or the shape by using the rolling mill operating apparatus thus constructed, as described below.

The operator determines whether the present plate crown or shape is concave, convex, ∪, or ∩ type by a plate profilometer, a shape sensor, or visually, and determines whether or not the correction is necessary. When it is determined that the correction is necessary, the operator presses any one of the concave 16, convex 17, ∪ type 23 and ∩ type 24 operation buttons to correct the current plate crown or shape. At this time, for the signal of the specific pattern and the calculation content of the calculator 10, the method as described above may be used. In response to the signal from the arithmetic unit 10, the axial direction control device 31 and the work roll bender control device 7 can control the axial direction moving device 30 and the work roll bender 4 of the work roll in accordance with a predetermined specific pattern.

In this way, the strip crown or shape matches the operator's recognition and the purpose of correction, and the sheet crown or shape correction capability of the rolling mill can be sufficiently exerted even by the manual control of the operator, and further, the quality of the strip material. Can be significantly improved, and the efficiency of operation can be improved.

The fifth embodiment of the present invention will be described with reference to FIG.

In FIG. 9, the rolling mill according to this embodiment is a work roll cross type four-stage rolling consisting of a work roll 1 and a reinforcing roll 3 which intersect each other in the horizontal direction. A work roll bender 4 and a chock 1A moving device 32 for adjusting the cross angle of the work roll 1 are provided. The work roll bender 4 is controlled by the work roll bender control device 7 so that the bending force becomes the command value, and the moving device 32 of the work roll chock 1A is controlled by the movement control device 33 so that the chock position becomes the command value. The work roll bender control device 7 and the movement control device 33 are the arithmetic unit 1
It is connected to 0 and receives a command signal from the arithmetic unit 10.
The arithmetic unit 10 is connected to the control panel 11, receives any one of a concave type, a convex type, a ∪ type, and a ∩ type signal from the control panel 11, and calculates the control amounts of the respective control means 4 and 32 correspondingly. , Sends the signal to the controller 7, 33.

On the control panel 11, a concave die 16, a convex die 17, a ∪ die 23, as a plate crown or a specific pattern of the shape,
The ∩ type 24 is displayed, and the operation end corresponding to each specific pattern is the operation button 12 for the concave type, the operation button 13 for the convex type, and the operation button 21 for the ∪ type.
However, the operation button 22 is installed for the ∩ type.

The operator can easily correct the strip crown or the shape by using the rolling mill operating device thus constructed, as will be described below.

The operator determines whether the current plate crown or shape is concave, convex, ∪-type or ∩-type by a plate profilometer, a shape sensor or visually, and determines whether or not the correction is necessary. When it is determined that the correction is necessary, the operator presses any one of the concave 16, convex 17, ∪ type 23 and ∩ type 24 operation buttons to correct the current plate crown or shape. At this time, for the signal of the specific pattern and the calculation content of the calculator 10, the method as described above may be used. In response to a signal from the arithmetic unit 10, the movement control device 33 and the work roll bender control device 7 can control the movement device 32 of the work roll chock, that is, the cross angle of the work roll 1 and the work roll bender 4 in accordance with a predetermined specific pattern. .

In this way, the strip crown or shape matches the operator's recognition and the purpose of correction, and the sheet crown or shape correction capability of the rolling mill can be sufficiently exerted even by the manual control of the operator, and further, the quality of the strip material. Can be significantly improved, and the efficiency of operation can be improved.

The above are the embodiments of the present invention, and various modifications can be made without departing from the spirit of the present invention.

[0085]

According to the present invention, the operator can easily correct the plate crown or the shape by using the operating end that matches the operator's correction purpose. As a result, the sheet crown or shape correcting ability of the rolling mill can be sufficiently exerted even by the manual control of the operator, the quality of the sheet material can be greatly improved, and the operation efficiency can be greatly improved.

[Brief description of drawings]

FIG. 1 is a schematic diagram illustrating a first embodiment of the present invention.

FIG. 2 is a schematic view showing another form of the first embodiment of the present invention.

FIG. 3 is a diagram illustrating a plate crown or shape and a specific pattern.

FIG. 4 is a diagram illustrating a second embodiment of the present invention.

FIG. 5 is a partial cross-sectional view illustrating the structure of an operation lever.

FIG. 6 is a plan view of an operation lever.

FIG. 7 is a schematic diagram illustrating a third embodiment of the present invention.

FIG. 8 is a schematic diagram illustrating a fourth embodiment of the present invention.

FIG. 9 is a schematic diagram illustrating a fifth embodiment of the present invention.

[Explanation of symbols]

 1 ... Work roll 2 ... Intermediate roll 3 ... Reinforcing roll 4 ... Work roll bender 5 ... Intermediate roll bender 6 ... Intermediate roll axial movement device 7 ... Work roll bender control device 8 ... Intermediate roll bender control device 9 ... Axial control Device (for intermediate roll) 10 ... Arithmetic unit 11 ... Control panel 12-15 ... Operation button 12a, 13a ... Operation button 16-19 ... Specific pattern display 16a, 17a ... Specific pattern display 20 ... Operation lever 21-22 ... Operation button 23 to 24 ... Specific pattern display 30 ... Axial movement device for work roll 31 ... Axial direction control device (for work roll) 32 ... Movement device for work roll chock 33 ... Movement control device 40 ... Spring 41 ... X sensor 42 ... Y sensor

Front Page Continuation (72) Inventor Koji Sato 502 Jinritsucho, Tsuchiura-shi, Ibaraki Hiritsu Seisakusho Co., Ltd. Mechanical Research Laboratory (72) Inventor Taiji Yoshimura 3-1-1, Saiwaicho, Hitachi, Ibaraki Hitachi, Ltd. Hitachi, Ltd. (72) Inventor, Shinichi Kaga, 3-1-1, Sachimachi, Hitachi, Ibaraki Hitachi Ltd., Hitachi, Ltd. (72) Inventor, Takuro Shibagaki, 5-2-1, Omika, Hitachi, Ibaraki Hitachi Ltd. Omika factory

Claims (9)

[Claims] 1. A rolling mill operating device having a plurality of control means for controlling the plate crown or plate shape of a plate material, the control panel displaying a specific pattern of the plate crown or plate shape, and the operator operating the control panel to display the specified pattern. An operating end for transmitting a signal corresponding to the pattern, a computing unit for computing the control amount of each of the plurality of control means from the signal corresponding to the specific pattern and transmitting the corresponding signal, and a signal from this computing unit A controller for adjusting the control amount of each of the plurality of control means according to the controller. 2. The rolling mill operating apparatus according to claim 1, wherein the plate crown of the plate material or the specific pattern of the plate shape displayed on the control panel is a concave type, a convex type, a W type, an M type or a combination thereof. An operating device of a rolling mill characterized by being present. 3. The operating device for a rolling mill according to claim 1, wherein the operation end is provided with a plurality of operation buttons arranged corresponding to a plate crown of a plate material or a specific pattern of the plate shape displayed on the control panel. An operating device for a rolling mill, characterized in that 4. The rolling mill operating apparatus according to claim 1, wherein the operating end has one operating lever and means for transmitting signals corresponding to a plurality of specific patterns by the operating lever. Rolling mill operating device. 5. The operating device for a rolling mill according to claim 1, wherein the plurality of control means include a work roll bender and an axial moving means for the intermediate roll. 6. The rolling mill operating apparatus according to claim 1, wherein the plurality of control means include a work roll bender and a work roll axial moving means. 7. The rolling mill operating apparatus according to claim 1, wherein the plurality of control means include a work roll bender, an intermediate roll bender, and an axial moving means for the intermediate roll. . 8. The rolling mill operating apparatus according to claim 1, wherein the plurality of control means include means for controlling the choke positions of the upper and lower work rolls intersecting the work roll bender. apparatus. 9. The method for operating a rolling mill according to claim 1, wherein a specific pattern close to a pattern to be added to the plate crown or plate shape is found from the display on the control panel in order to correct the plate crown or plate shape. A method of operating a rolling mill, characterized in that a signal corresponding to the specific pattern is transmitted to a computing unit by operating the operating end according to the display, and the control amount of each of the plurality of control means is adjusted.