A method and apparatus for tracking the head of a rolled piece for a hot rolling and coiling line

Abstract

The application relates to a rolling piece head tracking method for a hot rolling and coiling production line, the hot rolling and coiling production line comprising a rolling channel for conveying a rolling piece, pinch rolls matched with the rolling channel, and detection elements arranged directly above the rolling channel, and the method comprises the following steps: acquiring a head signal of the rolling piece, starting tracking and recording first tracking data S1; acquiring a signal that the rolling piece reaches the pinch rolls, stopping tracking; acquiring a horizontal installation interval L between the detection elements and the pinch rolls, and correcting the first tracking data S1 to S1=L; the method does not need to additionally increase the detection elements, reduces the cost of rolling piece head tracking, can reduce error correction caused by error signals of the increased detection elements, and guarantees the accuracy and reliability of rolling piece head position tracking; the correction means is not referenced by light signals, and can effectively avoid the influence of interference sources such as water vapor, fog, light pollution and the like in the field environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal processing, in particular to a rolling piece head tracking method and device for a hot rolling and coiling production line. BACKGROUND

[0002] In the coiling area of a horizontal coiling hot rolling strip production line, the head position tracking of the rolling piece is a very important control parameter. Based on the existing technical solutions, there are mainly two ways:

[0003] One way is to sense the head of the rolling piece by a hot metal detector and to perform speed integration to obtain data for tracking the position of the head of the rolling piece, and to directly use the data to participate in control. This way is easily affected by the environment such as water vapor, fog, light pollution, etc. in the field, and large errors are easily formed.

[0004] The second way is to add another sensor between the pinch roll and the coiling drum in the rolling channel to correct the tracking position data. This way is affected by the position of the equipment in the field, is troublesome to install, and the sensor is difficult to maintain and is easily damaged, and is also prone to false correction. SUMMARY

[0005] The present application aims to provide a rolling piece head tracking method and device for a hot rolling and coiling production line, and aims to solve the problems in the prior art that the head tracking of the rolling piece is easily affected by the environment in the field and large errors are easily formed, and the installation and maintenance cost of the detection equipment is high and false correction is easily caused.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] In one aspect, a rolling piece head tracking method for a hot rolling and coiling production line is provided, the hot rolling and coiling production line comprising a rolling channel for conveying a rolling piece, a pinch roll and a coiler adapted to the rolling channel, and a detection element arranged directly above the rolling channel, comprising:

[0008] Obtaining a head signal of the rolling piece, starting tracking and recording first tracking data S1;

[0009] Obtaining a signal that the rolling piece reaches the pinch roll, stopping tracking;

[0010] Obtaining a horizontal installation distance L between the detection element and the pinch roll, correcting the first tracking data S1 to S1=L;

[0011] Continuing to start tracking and recording second tracking data S2, and outputting the first tracking data S1 and the second tracking data S2.

[0012] In another aspect, a rolling head tracking system for a hot rolling coiling line is provided, characterized in that the system comprises at least one processor; and a memory storing instructions which, when executed by the at least one processor, implement the steps of the method as described above.

[0013] The present application has the advantages of not requiring additional detection elements, reducing the cost of rolling head tracking, and reducing error correction caused by false signals of the additional detection elements, thereby ensuring the accuracy and reliability of rolling head position tracking; the correction means does not refer to optical signals, effectively avoiding the influence of interference sources such as water vapor, fog, and light pollution in the field environment, greatly reducing correction errors, and having stronger practicality. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a schematic diagram of the tracking system in the present application;

[0015] Figure 2 is a schematic diagram of the relationship between the hot rolling coiling line and the tracking system in the present application;

[0016] Figure 3 is a control flowchart in the present application;

[0017] In the figure: 4, rolling channel; 5, rolling piece; 6, detection element; 7, pinch roll; 8, coiler. DETAILED DESCRIPTION

[0018] The technical solutions of the present application will be described clearly and completely below in combination with the drawings and embodiments of the present application.

[0019] Some embodiments of the present application relate to a rolling head tracking system for a hot rolling coiling line, as shown in Figure 1 The tracking system 1 comprises at least one processor 2; and a memory 3 storing instructions which, when executed by the at least one processor 2, implement all the steps in the following method embodiments.

[0020] In some rolling head tracking method embodiments for a hot rolling coiling line, the hot rolling coiling line comprises a rolling channel for conveying a rolling piece, a pinch roll adapted to the rolling channel, and a coiler, and a detection element is arranged directly above the rolling channel, characterized in that it comprises:

[0021] Obtaining a head signal of the rolling piece, starting tracking and recording first tracking data S1;

[0022] Obtaining a signal that the rolling piece reaches the pinch roll, stopping tracking;

[0023] Obtaining a horizontal installation distance L between the detection element and the pinch roll, and correcting the first tracking data S1 to S1=L.

[0024] Continuing to start tracking and recording the second tracking data S2, output the first tracking data S1 and the second tracking data S2.

[0025] In some embodiments of the method for tracking the head of the rolled piece in the hot rolling and coiling production line, the detection element is a hot metal detector, which detects the rolled piece signal and sends the rolled piece signal to the tracking system.

[0026] In some embodiments of the method for tracking the head of the rolled piece in the hot rolling and coiling production line, the head signal is a signal obtained when the detection element first detects the rolled piece, and the head signal is sent to the tracking system.

[0027] In some embodiments of the method for tracking the head of the rolled piece in the hot rolling and coiling production line, starting tracking and recording the first tracking data S1 includes:

[0028] Obtaining the conveying speed V of the rolled piece conveyed by the rolling channel, and integrating the conveying speed V to obtain the first tracking data S1;

[0029] Recording the first tracking data S1.

[0030] In some embodiments of the method for tracking the head of the rolled piece in the hot rolling and coiling production line, the rolled piece reaching the pinch roll signal includes a pinch roll opening degree change signal, the pinch roll opening degree change signal is obtained according to an opening degree detector, and the pinch roll opening degree change signal is sent to the tracking system.

[0031] In some embodiments of the method for tracking the head of the rolled piece in the hot rolling and coiling production line, the rolled piece reaching the pinch roll signal further includes a pinch roll pressure feedback signal, the pinch roll pressure feedback signal is obtained according to a pressure detector, and the pinch roll pressure feedback signal is sent to the tracking system.

[0032] In some embodiments of the method for tracking the head of the rolled piece in the hot rolling and coiling production line, obtaining the rolled piece reaching the pinch roll signal further includes a pinch roll motor torque load change signal, the pinch roll motor torque load change signal is obtained according to a motor detector, and the pinch roll motor torque load change signal is sent to the tracking system.

[0033] In some embodiments of the method for tracking the head of the rolled piece in the hot rolling and coiling production line, further comprising:

[0034] Obtaining a tail signal of the rolled piece, stopping recording the second tracking data S2, and clearing the first tracking data S1 and the second tracking data S2.

[0035] In some embodiments of the method for tracking the head of the rolled piece in the hot rolling and coiling production line, the tail signal is a signal that the detection element first fails to detect the rolled piece, and the tail signal is sent to the tracking system.

[0036] In some embodiments of the method for tracking the head of a rolled piece in a hot rolling and coiling line, the tracking process is as follows:

[0037] First, the head signal of the rolled piece is obtained, and the first tracking data S1 is recorded;

[0038] In the rolling channel of the hot rolling and coiling line, when the hot metal detector first detects the signal of the rolled piece, the head signal of the rolled piece is obtained, and then the head signal of the rolled piece is sent to the tracking system. The tracking system obtains the conveying speed of the rolling channel conveying the rolled piece at the same time of receiving the head signal, integrates the conveying speed of the rolled piece to obtain the first tracking data S1 of the rolled piece and records it.

[0039] Next, it is determined that the head of the rolled piece reaches the position of the pinch roll, the signal of the rolled piece reaching the pinch roll is obtained, and the horizontal installation distance L between the detection element and the pinch roll is obtained. The first tracking data S1 is corrected to S1=L.

[0040] The signal of the rolled piece reaching the pinch roll is respectively the opening degree change signal of the pinch roll, the pressure feedback signal of the pinch roll and the torque load change signal of the pinch roll motor.

[0041] The opening degree change signal of the pinch roll is obtained according to the opening degree detector, and the opening degree change signal of the pinch roll is sent to the tracking system.

[0042] The pressure feedback signal of the pinch roll is obtained according to the pressure detector, and the pressure feedback signal of the pinch roll is sent to the tracking system.

[0043] The torque load change signal of the pinch roll motor is obtained according to the motor detector, and the torque load change signal of the pinch roll motor is sent to the tracking system.

[0044] Then, the corrected first tracking data S1 is output, the second tracking data S2 is continuously recorded, and then the second tracking data S2 is output.

[0045] Finally, the signal of the tail of the rolled piece is obtained, the tracking system stops recording the second tracking data S2 after receiving the tail signal, and the first tracking data S1 and the second tracking data S2 are cleared.

[0046] Implementations of the subject matter and the functional operations described in this specification can be implemented in digital electronic circuitry, in tangibly-embodied computer software or firmware, in computer hardware, including the structures disclosed in this specification and their structural equivalents, or in combinations of one or more of them. Implementations of the subject matter described in this specification can be implemented as one or more computer programs, i.e., one or more modules of computer program instructions encoded on a tangible non-transitory program carrier, for execution by, or to control the operation of, data processing apparatus.

[0047] Alternatively, or in addition, the program instructions can be encoded on an artificially generated propagated signal, e.g., a machine-generated electrical, optical, or electromagnetic signal, that is generated to encode information for transmission to suitable receiver apparatus for execution by a data processing apparatus. A computer storage medium can be, or be included in, a computer-readable storage device, a computer-readable storage substrate, a random or serial access memory device, or a combination of one or more of them. The term "data processing apparatus" encompasses all kinds of apparatus, devices, and machines for processing data, including by way of example a programmable processor, a computer, or multiple processors or computers. The apparatus can include special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit). The apparatus can also include, in addition to hardware, code that creates an execution environment for the computer program in question, e.g., code that constitutes processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of them.

[0048] The term "data processing apparatus" encompasses all kinds of apparatus, devices, and machines for processing data, including by way of example a programmable processor, a computer, or multiple processors or computers. The apparatus can include special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit). The apparatus can also include, in addition to hardware, code that creates an execution environment for the computer program in question, e.g., code that constitutes processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of them.

[0049] A computer program (which can also be referred to or described as a program, software, a software application, a module, a software module, a script, or code) can be written in any form of programming language, including compiled or interpreted languages, or declarative or procedural languages, and it can be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program may, but need not, correspond to a file in a file system. A program can be stored in a portion of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document), in a single file dedicated to the program in question, or in multiple coordinated files, e.g., files that store one or more modules, sub programs, or portions of code. A computer program can be deployed to be executed on one computer or on multiple computers that are located at one site or distributed across multiple sites and networks.

Claims

1. A method for tracking the head of a rolled piece in a hot-rolled coiling production line, the hot-rolled coiling production line comprising a rolling channel for conveying the rolled piece, pinch rolls adapted to the rolling channel, and a coiler, wherein a detection element is disposed directly above the rolling channel, characterized in that, include: Acquire the head signal of the rolled piece, begin tracking, and record the first tracking data. The head signal is the signal obtained when the detection element first detects the rolled piece, and the head signal is sent to the tracking system; the tracking begins and the first tracking data is recorded. include: Obtain the conveying speed V of the rolled piece in the rolling channel, and integrate the conveying speed V to obtain the first tracking data. Record the first tracking data The tracking stops when the workpiece arrives at the pinch roll; the workpiece arrival signal includes the pinch roll opening change signal. The pinch roll opening change signal is obtained from the opening degree detector and sent to the tracking system. Obtain the horizontal mounting distance L between the detection element and the pinch roller, and input the first tracking data. Continue tracking and recording the second set of tracking data. Output the first tracking data Second tracking data Acquire the tail signal of the rolled piece and stop recording the second tracking data. And clear the first tracking data. Second tracking data The tail signal is the signal that the detection element cannot detect the rolled piece for the first time, and the tail signal is sent to the tracking system.

2. The method for tracking the head of a rolled piece in a hot-rolled coiling production line according to claim 1, characterized in that, The detection element is a hot metal detector, which detects the workpiece signal and transmits the workpiece signal to the tracking system.

3. The method for tracking the head of a rolled piece in a hot-rolled coiling production line according to claim 1, characterized in that, The signal indicating that the workpiece has arrived at the pinch roll also includes a pinch roll pressure feedback signal. The pinch roll pressure feedback signal is obtained from the pressure detector and then sent to the tracking system.

4. A method for tracking the head of a rolled piece in a hot-rolled coiling production line according to claim 1, characterized in that, The acquisition of the signal that the workpiece arrives at the pinch roll also includes the pinch roll motor torque load change signal. The pinch roll motor torque load change signal is obtained from the motor detector and sent to the tracking system.

5. A roll head tracking system for a hot-rolled coiling production line, characterized in that, The tracking system includes at least one processor; and a memory storing instructions that, when executed by the at least one processor, perform the steps of the method according to any one of claims 1-4.

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