JP3061983B2 - Roller size change control apparatus and rolling size change control method for roller guide row - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for simultaneously changing the rolling size of a roller guide row constituted by a plurality of roller guides provided in each rolling mill constituting a rolling mill row, and a control apparatus therefor. It is about the method.

[0002]

2. Description of the Related Art As a technique for changing the rolling size of a roller guide in a short time in response to a change in the rolling size of a rolling mill, a rolling material guiding method described in Japanese Patent Laid-Open No. 5-57325 has been proposed. In this publication, roller guides are provided on the entrance side of three types of finishing calibers of a reverse rolling mill,
A technique is disclosed in which a roller guide is positioned at any one of the three types of finish calipers, and the distance between the guide rollers is adjusted to the distance between the guide rollers which has been input in advance for these three types of calipers. ing.

[0003]

A change in the roll interval due to a change in the rolling size of each rolling mill constituting a rolling mill row, and a roll shift for changing a caliber used by the rolling mill, etc., have conventionally been automatic. Controlling technology has been developed, and although the entire rolling mill row can change the rolling size in a short period of time, the rolling of the entire roller guide row provided in this rolling mill row is possible. The technology to change the size all at once has not been developed. On the other hand, in order to meet the needs of products with small lots and short delivery times, it is necessary to efficiently perform multi-product small-quantity production. For that purpose, the time required for changing the rolling size of the roller guide row is shortened to improve the degree of freedom of rolling chances, for example, by increasing the number of product sizes that can be produced per charge number of an electric furnace or the like, Further small-lot, multi-product, small-volume production becomes possible, and the working ratio of the entire rolling line is improved.

The above publication discloses a technique in which the roller guide is caliber-shifted to three types of finishing calibers of a reverse rolling mill according to a rolling schedule and the interval between guide rollers is automatically adjusted according to the size of the corresponding caliber. However, it does not have a function of simultaneously changing the rolling size of the entire roller guide row provided in the rolling mill row in accordance with a predetermined pass schedule. For this reason, in order to change the rolling size of the roller guides of the entire rolling mill row, the operator determines whether or not the caliber shift is necessary according to the new rolling size, and then determines that the caliber shift is necessary. If you do
It is also necessary to judge and input an instruction of the caliber shift destination and an instruction of the guide roller interval.
As a result, there is a disadvantage that the possibility of occurrence of human error in these determinations and instruction work increases. Therefore, when the rolling size of the roller guide row is changed in accordance with the rolling size change of the rolling mill row, the rolling size change of the entire roller guide row is performed simultaneously and automatically by the automatic control according to a pass schedule previously input to the rolling mill row. For example, it is possible to reduce the time required for changing the rolling size and prevent the above-described human error.

An object of the present invention is to integrate and control the entire roller guide row, thereby completing the size change of the roller guide row in a short time, improving the rolling chance free degree of the rolling line, and increasing the variety of small-sized products. The purpose is to perform mass production efficiently. Another object of the present invention is to prevent a human operation error caused by a change in the rolling size by integrally changing the rolling size of the roller guide row according to a predetermined pass schedule.

[0006]

According to the present invention, the change in the rolling size of the roller guide row in accordance with the change in the rolling size of the rolling mill row is performed according to a pass schedule predetermined for the rolling mill row. Are integrated and automatically controlled. "Roller guide row" refers to the entirety of a plurality of roller guides that are provided at both or one of the inlets and outlets of each rolling mill that constitutes the rolling mill row, and are provided throughout the rolling mill row. It is.

The first feature of the roller guide row rolling size change control apparatus according to the present invention is that a control network centered on the host control apparatus is constituted by a host control apparatus, a guide row control apparatus, and a guide control apparatus. Where it is formed. The host control device is connected to the guide train control device as a higher-order control device, and instructs the guide train control device to specify a rolling size in accordance with a rolling schedule. The above guide row control device is for controlling a roller guide row constituted by roller guides provided in each rolling mill of the rolling mill row. The guide control device is connected to the guide train control device as a lower control device, and controls a change in the rolling size of the roller guide in accordance with an instruction from the guide train control device.

A first feature of the method of the present invention is a method for controlling a change in rolling size by using the above-mentioned rolling size change control device, wherein a new rolling size is instructed from a host control device to a guide train control device. Then, according to an instruction issued to the guide control device according to a pass schedule previously input to the guide row control device, the guide control device controls the roller guides, and a plurality of the roller guides are provided on the rolling rolls of the rolling mill. And / or control of the guide shift to align the new caliber with one of the existing calibers, and / or the change of the guide roller interval to adjust the guide roller interval to the roll gap of the new caliber Is performed to change the rolling size of the entire roller guide row.

A second feature of the roller guide row rolling size change control apparatus according to the present invention is that a control network centered on the host control apparatus is formed by the host control apparatus and the guide row control apparatus. In
The host controller is connected to the guide train control device as a higher-level control device, and is for instructing a rolling size to the guide train control device in accordance with a rolling schedule. This is for controlling a roller guide row constituted by roller guides provided in each rolling mill of the rolling mill and controlling a change in the rolling size of the roller guide.

[0010] The second aspect of the rolling size change control method of the present invention.
Is a method of controlling the change of the rolling size using the rolling size change control device of the roller guide row having the second feature, and instructing a new rolling size from the host control device to the guide row control device. Then, the roller guide is controlled according to a pass schedule previously input to the guide row control device, and the roller guide is aligned with any one of a plurality of calipers provided on rolling rolls of a rolling mill. Where the rolling size of the entire roller guide row is changed by performing control of both or one of the guide shift for changing the guide roller interval and the guide roller interval for adjusting the guide roller interval to the roll gap of the new caliber. It is in.

[0011]

The host controller issues a new rolling size instruction to the lower guide train control device, and the guide train control device instructs the lower guide train control device to control each lower guide train according to a previously input pass schedule. Since an instruction of a new rolling size, that is, an instruction of a caliber position and / or an instruction of a guide roller interval is issued to the apparatus, each guide control apparatus controls each roller guide to perform alignment. And / or a change in the guide roller interval is performed, and as a result, the change in the rolling size of the roller guide row performed with the change in the size of the rolling mill row is performed by the roller guide. This is performed simultaneously for the rolling size of the entire row.

[0012]

An embodiment of the present invention will be described with reference to the drawings. A first embodiment of a rolling size change control device according to the present invention will be described with reference to FIG. In the rolling size change control device in this example, a host control device 1, a guide train control device 2, and a guide control device 3 form a control network centered on the host control device.
The host control device 1 is for process management for managing and controlling the rolling schedule of the entire rolling mill including the entire rolling mill row, the product size and quantity to be rolled, and the like. The host control device 1 is connected to the plurality of guide train control devices 2 as a higher-order control device, and is for instructing the guide train control device on the rolling size according to the rolling schedule. Each guide train control device 2 gives a predetermined instruction to the guide control device 3 in accordance with a pass schedule corresponding to the rolling size of a product to be newly rolled which has been input to the guide train control device in advance, and performs guide control. The apparatus 3 controls a roller guide row 5 (shown by dotted lines) constituted by roller guides 4 provided in each rolling mill of the rolling mill row. The predetermined instruction of the guide train control device 2 to the lower guide control device 3 includes the following two instructions. That is, the first instruction is a caliber shift for aligning the roller guide 4 with any one of a plurality of calibers provided on the rolling rolls of the rolling mill. The second instruction is to change the guide roller interval of the roller guide 4 to match the roll interval of the new caliber. First
And the second instruction are not always paired, and may be performed independently or may be performed in pairs by changing the rolling size of the rolling mill row. The guide control device 3 is connected to the guide train control device 2 as a lower control device, and
Is controlled in accordance with an instruction of the guide row control device 2. As shown in the drawing, one guide control device 3 is connected to one or several roller guides 4 one by one.

Next, a first embodiment of the control method for changing the rolling size of the roller guide row according to the present invention will be described with reference to FIGS. When the rolling size of a product to be newly rolled is instructed from the host control device 1 to the guide train control device 2, the guide train control is performed according to a pass schedule corresponding to the rolling size of the product to be newly rolled which has been input to the guide train control device in advance. The apparatus 2 instructs the guide control unit 3 of the guide shift position data and the rolling size change data of the guide roller interval, and for this purpose, the guide control unit 3 controls the roller guide 4 to change the roller guide to the rolling mill. Caliber shift for aligning with any one of the calibers provided on a plurality of rolling rolls, and / or changing the guide roller interval for adjusting to the new caliber roll interval (Both in the illustrated example). At this time, the simultaneous change of the rolling size of the roller guide row 5 provided in the rolling mill row is automatically performed. Thereafter, the completion of caliber change is confirmed, and the change of the rolling size of the roller guide row 5 is completed.

FIG. 3 shows a second embodiment of the rolling size change control device according to the present invention. The rolling size change control device in this example is different from the rolling size change control device of the first embodiment in that the guide control device 3 is not provided, but other configurations are common. In this example, the guide line control device 12 network-connected to the host control device 11 includes a roller guide line 15
Is performed for the roller guide 14 constituting the above. For this purpose, the guide train control device 12 has a function of controlling the roller guide 14 corresponding to the above-described guide control device 3.

In the rolling size change control method by the rolling size change control device shown in the second embodiment, as shown in FIG. 4, when a rolling size of a product to be newly rolled is instructed from the host control device 11 to the guide row control device 12. The roller guides are controlled according to a pass schedule corresponding to the rolling size of the product to be newly rolled which has been input to the guide row control device in advance, and a plurality of roller guides 14 are provided on the caliber provided on the rolling rolls of the rolling mill. The control of the caliber shift for aligning with any one new caliber and the change of the guide roller interval for adjusting to the roll interval of the new caliber, or both (in the illustrated example, both) are controlled. Do. This control automatically changes the rolling size of the roller guide rows 15 provided in the rolling mill row at the same time. Thereafter, the completion of caliber change is confirmed, and the change of the rolling size of the roller guide row 15 is completed.

As described above, in any of the rolling size change control devices and methods shown in any of the examples, according to the instructions of the host controllers 1 and 11 connected to the guide array controllers 2 and 12, the entire roller guide array is controlled. In order to perform the rolling size change in an integrated manner, this size change can be performed in a short time, and the rolling roll chance free degree reaches a level at which the rolling size of the rolling mill row can be changed for each billet. Can be improved, and it is possible to perform high-mix low-volume production in units of one billet.

The first embodiment of the rolling size change control device and its method is different from the second embodiment in that the guide control device 3
Is provided to control the roller guide, so that there is an advantage that the processing time for controlling the roller guide can be further reduced.

[0018]

According to the present invention, a host controller and a guide train controller for controlling the rolling size of the entire roller guide train are connected to a network, and a new size is sequentially instructed from the host controller to the guide train controller. By doing so, in order to simultaneously change the rolling size of the entire roller guide row, it is possible to reduce the time required for changing the rolling size, improve the roll roll chance free degree,
Multi-product small-volume production of extremely small lots becomes possible, the production efficiency of the rolling mill can be significantly improved, and human operation errors due to changes in the rolling size can be prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of a rolling size change control device for a roller guide row according to the present invention.

FIG. 2 is a flowchart showing a first embodiment of a method for controlling a change in the rolling size of a roller guide row according to the present invention.

FIG. 3 is a block diagram showing a second embodiment of a rolling size change control device for a roller guide row according to the present invention.

FIG. 4 is a flowchart showing a second embodiment of a method for controlling a change in the rolling size of a roller guide row according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Host controller 2 Guide row controller 3 Guide controller 4 Roller guide 5 Roller guide row 11 Host controller 12 Guide row controller 14 Roller guide 15 Roller guide row

Continuation of the front page (56) References JP 7-83891 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B21B 39/14 B21B 39/00 B21B 39/34

Claims (4)

(57) [Claims] 1. A control network centered on the host control device is formed by a host control device, a guide train control device, and a guide control device, and the host control device is higher than the guide train control device. It is connected as a control device and is for instructing the rolling size to the guide train control device according to the rolling schedule, and the guide train control device is a roller guide provided in each rolling mill of the rolling mill train. The guide control device is connected to the guide line control device as a lower-order control device, and controls the rolling size change of the roller guides by the guide line control device. And a control device for changing the rolling size of the roller guide row. 2. A method for controlling rolling size change using the roller guide row rolling size change control device according to claim 1, wherein a new rolling size is instructed from the host control device to the guide row control device. According to an instruction issued to the guide control device in accordance with a pass schedule previously input to the guide train control device, the roller control is controlled by the guide control device, and a plurality of the roller guides are provided on a rolling roll of a rolling mill. Control one or both of the guide shift to align with one new caliber of a certain caliber and the guide roller interval change to adjust the guide roller interval to the roll gap of the new caliber A method for controlling the rolling size of the roller guide row, wherein the rolling size of the entire roller guide row is changed. 3. A control network centering on the host controller is formed by the host controller and the guide train controller, and the host controller is connected to the guide train controller as a higher-level controller. It is for instructing the rolling size to the guide row control device according to the rolling schedule, the guide row control device is a roller configured by a roller guide provided in each rolling mill of the rolling mill row A roll size change control device for a roller guide row, which controls a guide row and controls a roll size change of a roller guide. 4. A method for controlling rolling size change using the roller guide row rolling size change control device according to claim 3, wherein a new rolling size is instructed from the host control device to the guide row control device. The roller guide is controlled in accordance with a pass schedule previously input to the guide row control device, and the roller guide is aligned with any one of a plurality of calipers provided on a plurality of rolling rolls of a rolling mill. And / or changing the guide roller interval to adjust the guide roller interval to the roll gap of the new caliber, to change the rolling size of the entire roller guide row. A method for controlling a rolling size of a roller guide row, which is characterized by the following.