A remote control system and control method for a reversible cold rolling mill

Abstract

The present invention discloses a reversible cold rolling mill remote control system, including a reversible cold rolling mill, wherein the reversible cold rolling mill is provided with an uncoiling area and a rolling area, and includes: monitoring equipment for monitoring the operation status respectively arranged at key positions of the uncoiling area and the rolling area, an execution device and a control device correspondingly connected to the uncoiling area and the rolling area for correspondingly controlling each execution operation, wherein the monitoring equipment and the execution device are both connected to the control device, and the control device is used to receive the monitoring signal of the monitoring equipment and to control the execution device to perform corresponding operations. This system can effectively improve the working environment of the rolling mill operator and reduce operating errors, improve the rolling effect of the steel strip, and can be promoted for use. The present invention also provides a control method applied to the above-mentioned reversible cold rolling mill remote control system, which optimizes the existing rolling adjustment control method, is conducive to improving the adjustment accuracy of the steel strip, and effectively avoids major production accidents such as deviation, broken strip, and sticking rollers.

Description

Technical Field

[0001] The present invention relates to the field of metallurgical cold rolling technology, and more specifically, to a reversible cold rolling mill remote control system. In addition, the present invention also relates to a control method applied to the reversible cold rolling mill remote control system. Background Art

[0002] In the prior art, the common adjustment method for a single-stand reversible cold rolling mill is that the main control personnel are responsible for adjusting the mill speed, thickness and other parameters on the operating table; the adjustment personnel are responsible for adjusting the plate shape and process, as well as the rolling, unwinding, threading and unloading operations of the mill at the operating boxes in front of and behind the mill. Usually, the main control personnel control the pressure and speed of the mill on the operating table, and the adjustment personnel observe the operation status of the mill and the steel strip on site, start the corresponding switches on the operating box, control the threading, unloading, emulsion injection and air purge of the mill, and adjust the steel strip shape at any time.

[0003] Since the single-stand reversible cold rolling mill uses emulsion for process cooling and lubrication during rolling, and uses compressed air to clean the steel strip surface, the entire mill site environment is harsh, the emulsion generates a lot of steam and noise, and the on-site purge noise can reach 90 to 110 decibels. Being in this environment for a long time will cause the adjusters to have hearing loss, mental tension, damage to the respiratory system, and ultimately have a great impact on the physical and mental health of the operators.

[0004] Moreover, since the entire adjustment process is carried out by the adjusters under on-site observation, the on-site noise is loud, the operators are far apart from each other, unable to communicate normally, and the observation line of sight is not clear, which easily leads to improper coordination. Moreover, the adjusters stand on one side of the steel belt to observe and adjust, which easily leads to visual errors, and ultimately problems such as untimely and inaccurate adjustments are prone to occur, which makes operational errors often occur and may even cause major production accidents such as misalignment and belt breakage.

[0005] In summary, how to provide a device for improving the working environment of rolling mill operators and reducing operating errors is a problem that needs to be urgently solved by those skilled in the art. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a reversible cold rolling mill remote control system, which can effectively improve the working environment of the rolling mill operators and reduce operating errors, improve the steel strip rolling effect, and the system has a simple structure, easy operation, strong adaptability, and can be promoted for use.

[0007] Another object of the present invention is to provide a control method applied to the above-mentioned reversible cold rolling mill remote control system, which optimizes the rolling adjustment control method of the prior art, is conducive to improving the adjustment accuracy of the steel strip, and effectively avoids major production and equipment accidents such as deviation, breakage, and roller sticking.

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] A reversible cold rolling mill remote control system comprises a reversible cold rolling mill, wherein the reversible cold rolling mill comprises an uncoiling area and a rolling area, and comprises: monitoring equipment for monitoring the operation conditions respectively arranged at key positions of the uncoiling area and the rolling area, an execution device and a control device correspondingly connected to the uncoiling area and the rolling area for correspondingly controlling each execution operation, wherein the monitoring equipment and the execution device are both connected to the control device, and the control device is used to receive the monitoring screen and monitoring signal of the monitoring equipment, and to control the execution device to perform corresponding operations.

[0010] Preferably, the uncoiling area includes an uncoiling machine for uncoiling the raw material coil and a straightening machine for straightening the uncoiling steel strip;

[0011] The monitoring equipment includes an uncoiler monitor for monitoring the operation of the uncoiler, a starter monitor for monitoring the operation of the starter, a billet head and tail monitor for monitoring the condition of the steel strip after uncoiling, and a straightener monitor for monitoring the operation of the straightener. The uncoiler monitor, the starter monitor, the billet head and tail monitor, and the straightener monitor are arranged in the uncoiler area in sequence.

[0012] Preferably, the monitoring equipment includes an entrance transmission side monitor arranged at the entrance transmission side of the rolling area for monitoring the edge condition of the steel strip, an exit transmission side monitor arranged at the exit transmission side of the rolling area for monitoring the edge condition of the steel strip, an entrance operation side monitor arranged at the entrance operation side of the rolling area for monitoring the edge condition of the steel strip, and an exit operation side monitor arranged at the exit operation side of the rolling area for monitoring the edge condition of the steel strip. The entrance transmission side monitor, the entrance operation side monitor, the exit transmission side monitor and the exit operation side monitor are all vertically arranged above both sides of the steel strip to accurately monitor the running trajectory of the steel strip in the rolling area.

[0013] Preferably, the monitoring equipment comprises a steel strip operation monitor for real-time monitoring of the running condition of the steel strip and a steel strip edge monitor for real-time monitoring of the edge position of the steel strip, the steel strip operation monitor and the steel strip edge monitor are both arranged in the rolling area, and the monitoring screen of the control device for transmitting the signal of the steel strip edge monitor to the control device is preset with a reference line for remotely adjusting the motion trajectory of the steel strip;

[0014] The execution device includes mechanical centering devices respectively arranged at the entrance and exit of the rolling area, and the mechanical centering devices are used to adjust the running trajectory of the steel strip according to the reference line during the threading process, so that the center line of the steel strip coincides with the rolling center line and the edge of the steel strip is aligned with the reference line.

[0015] Preferably, the monitoring equipment includes an entrance steel strip shape monitor arranged at the entrance of the rolling area and an exit steel strip shape monitor arranged at the exit of the rolling area, the entrance steel strip shape monitor and the exit steel strip shape monitor are both used to monitor the steel strip shape and to promptly feed back the shape defects of the steel strip to the control device, and the execution device includes a shape adjustment device arranged in the rolling area for adjusting the steel strip shape.

[0016] Preferably, the rolling area comprises an entrance coiler for coiling the steel strip provided at the entrance of the rolling area and an exit coiler for coiling the steel strip provided at the exit of the rolling area;

[0017] The monitoring equipment includes an inlet thickness gauge provided at the inlet coiler for measuring the thickness of the steel strip and an outlet thickness gauge provided at the outlet coiler for measuring the thickness of the steel strip;

[0018] The execution device includes a coiling device arranged in the uncoiling area for conveying the raw material coil to the uncoiler, an entrance uncoiling device arranged at the entrance coiler for unloading the steel strip that meets the thickness requirements after rolling, and an exit uncoiling device arranged at the exit coiler for unloading the steel strip that meets the thickness requirements after rolling.

[0019] Preferably, an operation monitor for monitoring the flow, temperature and pressure of the emulsion during the rolling process is provided in the rolling area, the emulsion is used to cool and lubricate the steel strip, and the operation monitor is connected to the control device to transmit a monitoring signal to the control device.

[0020] Preferably, the control device also includes an on-site remote conversion device arranged on the on-site operation box of the reversible cold rolling mill, and the on-site remote conversion device is used to realize the conversion between remote rolling control and on-site maintenance control to facilitate later on-site maintenance.

[0021] A control method, applied to the above-mentioned reversible cold rolling mill remote control system, comprising:

[0022] S1. The control device receives the monitoring screen of the monitoring device in the unwinding area in real time, so as to judge in real time whether there is a raw material coil on the unwinding machine. If not, the execution device in the unwinding area is controlled to perform the coiling operation. If yes, the coiling operation is not performed.

[0023] S2, the control device receives the monitoring screen of the monitoring equipment of the uncoiler and the straightener in real time, so as to judge in real time whether the uncoiling process and the straightening process of the raw material coil are normal. If yes, the control execution device transports the straightened steel strip to the rolling area for rolling; if not, the operation is suspended for maintenance;

[0024] S3. The control device receives the monitoring screen of the monitoring equipment in the rolling area in real time to judge the rolling process of the steel strip in real time. If the thickness of the steel strip after rolling meets the requirements, the control execution device will unroll the steel strip that meets the requirements. If the thickness of the steel strip after rolling does not meet the preset thickness requirements, the control execution device will repeat the rolling of the steel strip.

[0025] Preferably, S3 also includes: the control device receives the monitoring screen of the monitoring equipment in the rolling area in real time, so as to judge the rolling process of the steel strip in real time; if the position offset or abnormal plate shape deformation occurs during the rolling process of the steel strip, the control execution device performs rolling centerline adjustment and abnormal deformation adjustment operations on the steel strip; if the position offset or abnormal plate shape deformation does not occur during the rolling process of the steel strip, the control execution device repeatedly rolls the steel strip until the rolled thickness of the steel strip meets the requirements.

[0026] When using the reversible cold rolling mill remote control system provided by the present invention, since monitoring equipment is set in both the unwinding area and the rolling area, the control device can receive the signals and images monitored by the monitoring device in real time, and the operator can timely control the execution device to perform corresponding operations according to the monitoring images and monitoring signals, thereby realizing remote control of the raw material coil winding, unwinding, straightening, threading, rolling adjustment, unloading and other operations. In this way, the on-site operation of rolling in the prior art can be changed to remote operation, which can well improve the operating environment of the operator, avoid the loss of connection when the operator is in contact or cooperation, reduce the phenomenon of operating errors, and ultimately effectively reduce the occurrence of major production accidents.

[0027] Moreover, since monitoring equipment is installed at key positions in the uncoiling area and the rolling area, accurate, effective and comprehensive monitoring of the reversible cold rolling mill can be ensured, so that after the control device receives the monitoring image and monitoring signal, it can make relevant adjustments and control operations in time to ensure good steel strip rolling effects.

[0028] Furthermore, the reversible cold rolling mill remote control system provided by the present invention has a simple structure, is easy to operate, and has strong adaptability, and can be promoted for use.

[0029] In summary, the reversible cold rolling mill remote control system provided by the present invention can effectively improve the working environment of the rolling mill operators and reduce operating errors, and can also improve the steel strip rolling effect. Moreover, the system has a simple structure, easy operation, strong adaptability, and can be promoted for use.

[0030] In addition, the present invention also provides a control method applied to the above-mentioned reversible cold rolling mill remote control system, which optimizes the rolling adjustment control method of the prior art, is conducive to improving the adjustment accuracy of the steel strip, and effectively avoids major production and equipment accidents such as deviation, breakage, and roller sticking. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0032] Figure 1 This is a schematic structural diagram of a reversible cold rolling mill remote control system provided by the present invention;

[0033] Figure 2 for Figure 1 The main view;

[0034] Figure 3 It is a schematic diagram of each monitoring screen of the unwinding area;

[0035] Figure 4 It is a schematic diagram of each monitoring screen at the entrance and exit of the rolling area;

[0036] Figure 5 It is a schematic diagram of various monitoring screens of the steel strip running conditions in the rolling area;

[0037] Figure 6 A schematic diagram of an operation screen of a control device for controlling an execution device to perform reel loading and unloading operations;

[0038] Figure 7A schematic flow chart of a control method provided by the present invention and applied to the above-mentioned reversible cold rolling mill remote control system.

[0039] Figure 1-7 middle:

[0040] 100 is the unwinding area, 101 is the unwinding machine, 102 is the straightening machine, 200 is the rolling area, 201 is the entry coiler, 202 is the exit coiler, 300 is the control device, 1 is the monitoring screen of the unwinding machine monitor, 2 is the monitoring screen of the opening machine monitor, 3 is the monitoring screen of the billet head and tail monitor, 4 is the monitoring screen of the straightening machine monitor, 5 is the monitoring screen of the entry drive side monitor, 6 is the monitoring screen of the exit drive side monitor, 7 is the monitoring screen of the entry operation side monitor, 8 is the monitoring screen of the exit operation side monitor, 9 is the monitoring screen of the entry coiler monitor, 10 is the monitoring screen of the exit coiler 10 is the monitoring screen of the machine monitor, 11 is the monitoring screen of the entrance steel strip flatness monitor, 12 is the monitoring screen of the exit steel strip flatness monitor, 13 is the reference line, 14 is the monitoring screen of the steel strip operation monitor, 301 is the setting demonstration of the entrance operation side monitor and the exit operation side monitor, 302 is the setting demonstration of the entrance drive side monitor and the exit drive side monitor, 303 is the setting demonstration of the opening machine monitor and the billet head and tail monitor, 304 is the setting demonstration of the uncoiler monitor and the straightening machine monitor and the entrance coiler monitor and the exit coiler monitor and the entrance steel strip flatness monitor and the exit steel strip flatness monitor. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] The core of the present invention is to provide a reversible cold rolling mill remote control system, which can effectively improve the working environment of the rolling mill operators and reduce operating errors, improve the steel strip rolling effect, and the system has a simple structure, easy operation, strong adaptability, and can be promoted for use.

[0043] Another core of the present invention is to provide a control method applied to the above-mentioned reversible cold rolling mill remote control system, which optimizes the rolling adjustment control method of the prior art, is conducive to improving the adjustment accuracy of the steel strip, and effectively avoids major production and equipment accidents such as deviation, breakage, and roller sticking.

[0044] Please refer to Figures 1 to 7 ,in, Figure 1This is a schematic structural diagram of a reversible cold rolling mill remote control system provided by the present invention; Figure 2 for Figure 1 The main view; Figure 3 It is a schematic diagram of each monitoring screen of the unwinding area; Figure 4 It is a schematic diagram of each monitoring screen at the entrance and exit of the rolling area; Figure 5 It is a schematic diagram of various monitoring screens of the steel strip running conditions in the rolling area; Figure 6 A schematic diagram of an operation screen of a control device for controlling an execution device to perform reel loading and unloading operations; Figure 7 A schematic flow chart of a control method provided by the present invention and applied to the above-mentioned reversible cold rolling mill remote control system.

[0045] A reversible cold rolling mill remote control system provided in this specific embodiment includes a reversible cold rolling mill, which is provided with an uncoiling area 100 and a rolling area 200, including: monitoring equipment for monitoring the operating conditions respectively arranged at key positions of the uncoiling area 100 and the rolling area 200, an execution device correspondingly connected to the uncoiling area 100 and the rolling area 200 for correspondingly controlling each execution operation, and a control device 300, wherein the monitoring equipment and the execution device are both connected to the control device 300, and the control device 300 is used to receive the monitoring screen and monitoring signal of the monitoring equipment, and to control the execution device to perform corresponding operations.

[0046] It should be noted that monitoring equipment can be set at each key position of the reversible cold rolling mill that needs to be monitored, so that the monitoring equipment can transmit the monitoring screen and monitoring signal to the control device 300. By simultaneously monitoring multiple key parts of the reversible cold rolling mill, the steel strip running process can be effectively pre-adjusted and pre-controlled to improve the accuracy of the rolling mill operation.

[0047] It should also be noted that the above-mentioned key positions may refer to the position of the unwinding machine 101 for unwinding the raw material coil and the position of the straightening machine 102 for straightening the unwinding steel strip in the unwinding area 100, and may also refer to the position of the entrance coiler 201 for coiling the steel strip at the entrance of the rolling area 200 and the position of the exit coiler 202 for coiling the steel strip at the exit of the rolling area 200. In actual use, monitoring equipment may be set at the position where key operations are required according to actual conditions and actual needs.

[0048] Preferably, the various monitoring screens of the control device 300 can be arranged according to the equipment arrangement order or operation order to facilitate observation and adjustment by operators.

[0049] By using the reversible cold rolling mill remote control system provided by the present invention, all the operators of the unit can be transferred to the main control room of the rolling mill, thereby improving the job environment. The operator only needs to centrally operate the control device 300 to realize the steel strip rolling operation. Moreover, all the operators of the reversible cold rolling unit are transferred to the main control room of the rolling mill, which can realize seamless connection between various positions, improve the degree of cooperation, and facilitate job optimization, reduce the number of operators at the position, and save human resources.

[0050] In addition, it should be noted that during actual use, the location, number, model, structure, etc. of the monitoring equipment, execution device and control device 300 can be determined according to actual conditions and actual needs.

[0051] When using the reversible cold rolling mill remote control system provided by the present invention, since monitoring equipment is set in both the unwinding area 100 and the rolling area 200, the control device 300 can receive the signals and images monitored by the monitoring device in real time, and the operator can timely control the execution device to perform corresponding operations according to the monitoring images and monitoring signals, thereby realizing remote control of the raw material coil winding, unwinding, straightening, threading, rolling adjustment, unloading and other operations. In this way, the on-site operation of rolling in the prior art can be changed to remote operation, which can well improve the operating environment of the operator, avoid the loss of connection when the operator is in contact or cooperation, reduce the phenomenon of operating errors, and ultimately effectively reduce the occurrence of major production accidents.

[0052] Moreover, since monitoring equipment is installed at key positions of the uncoiling area 100 and the rolling area 200, accurate, effective and comprehensive monitoring of the reversible cold rolling mill can be ensured, so that after the control device 300 receives the monitoring image and monitoring signal, relevant adjustments and control operations can be made in time to ensure good rolling effect of the steel strip.

[0053] In addition, the reversible cold rolling mill remote control system provided by the present invention has a simple structure, convenient operation, strong adaptability, and can be promoted for use.

[0054] In summary, the reversible cold rolling mill remote control system provided by the present invention can effectively improve the working environment of the rolling mill operators and reduce operating errors, and can also improve the steel strip rolling effect. Moreover, the system has a simple structure, easy operation, strong adaptability, and can be promoted for use.

[0055] Preferably, the uncoiling area 100 includes an uncoiler 101 for uncoiling the raw material coil and a straightener 102 for straightening the steel strip after uncoiling; the monitoring equipment includes an uncoiler monitor for monitoring the operation of the uncoiler 101, a starting machine monitor for monitoring the operation of the starting machine, a billet head and tail monitor for monitoring the condition of the steel strip after uncoiling, and a straightener monitor for monitoring the operation of the straightener 102. The uncoiler monitor, the starting machine monitor, the billet head and tail monitor, and the straightener monitor are respectively arranged in the uncoiling area 100.

[0056] It should be noted that after the raw material coil is conveyed to the uncoiler 101, it is first uncoiled at the uncoiler 101, and then the uncoiled steel strip is conveyed to the straightening machine 102 by the clamping roller, and the steel strip is straightened under the action of the straightening roller, and then conveyed to the rolling area 200 for rolling operation. At the same time, the operator can observe in real time whether the raw material coil is smoothly performing the above operations according to the monitoring screen 1 of the uncoiler monitor, the monitoring screen 2 of the opening machine monitor, the monitoring screen 3 of the billet head and tail monitor, and the monitoring screen 4 of the straightening machine monitor. If an abnormal phenomenon occurs, the corresponding execution device can be controlled to adjust the operation to avoid major production accidents or poor quality of the rolled steel strip.

[0057] In actual use, the number, location, type, etc. of the monitoring equipment and the execution devices of the unwinding area 100 can be determined according to actual conditions and actual needs.

[0058] Preferably, the monitoring equipment includes an inlet transmission side monitor arranged at the inlet transmission side of the rolling area 200 for monitoring the edge condition of the steel strip, an outlet transmission side monitor arranged at the outlet transmission side of the rolling area 200 for monitoring the edge condition of the steel strip, an inlet operation side monitor arranged at the inlet operation side of the rolling area 200 for monitoring the edge condition of the steel strip, and an outlet operation side monitor arranged at the outlet operation side of the rolling area 200 for monitoring the edge condition of the steel strip. The inlet transmission side monitor, the inlet operation side monitor, the outlet transmission side monitor and the outlet operation side monitor are all arranged vertically above both sides of the steel strip to accurately monitor the running trajectory of the steel strip in the rolling area 200.

[0059] In the prior art, the track of the steel strip edge is generally manually observed at an angle on site to adjust the track of the steel strip, but this method is prone to visual errors, which in turn affects the accuracy of the adjustment control. Therefore, the inlet transmission side monitor, the inlet operation side monitor, the outlet transmission side monitor and the outlet operation side monitor are all vertically arranged above both sides of the steel strip, which can more accurately and objectively monitor the running track of the steel strip in the rolling area 200, and ultimately effectively improve the accuracy of the adjustment control of the steel strip operation.

[0060] Preferably, the monitoring equipment includes a steel strip operation monitor for real-time monitoring of the running condition of the steel strip and a steel strip edge monitor for real-time monitoring of the edge position of the steel strip. The steel strip operation monitor and the steel strip edge monitor are both arranged in the rolling area 200. The monitoring screen of the steel strip edge monitor transmitted to the control device 300 is preset with a reference line 13 for remotely adjusting the movement trajectory of the steel strip; the execution device includes mechanical centering devices respectively arranged at the entrance of the rolling area 200 and the exit of the rolling area 200. The mechanical centering device is used to adjust the running trajectory of the steel strip according to the reference line 13 during the threading process, so that the center line of the steel strip coincides with the rolling center line and the edge of the steel strip is aligned with the reference line 13, thereby ensuring a good rolling effect of the steel strip.

[0061] It should be noted that the steel strip operation monitor can monitor parameters such as roll gap difference, rolling force difference, tension difference, etc. during the operation of the steel strip, and transmit these monitoring signals to the control device 300, so that the control device 300 can more accurately adjust the steel strip operation trajectory and perform related control operations according to these parameters and other monitoring images.

[0062] In addition, it should be noted that according to the different widths of the rolled steel strip, the dotted lines of the steel strip edges can be marked with a marker on the monitoring screen of the steel strip edge monitor, such as Figure 4 The dashed line portion shown can be divided into different dashed lines according to different widths, which can be used as a reference line 13 for remotely adjusting the running trajectory of the steel strip to ensure that the center line of the steel strip coincides with the rolling center line.

[0063] In this embodiment, the operator can adjust the roll gap inclination through the monitoring screen of the steel strip edge monitor, combined with reference roll gap difference, rolling force difference, tension difference and other parameters, so as to control the running trajectory of the steel strip edge, that is, control the rolling center line, so as to eliminate the tendency of the steel strip to deviate.

[0064] For example, when the edge of the steel strip deviates to the outside and has deviated from the corresponding outer edge virtual line, the operator can adjust the roll gap inclination, increase the inner roll gap, and reduce the outer roll gap, so that the edge of the steel strip slowly moves inward until the edge of the steel strip coincides with the corresponding virtual line; and when the edge of the steel strip deviates to the inside and has deviated from the corresponding inner edge virtual line, the operator can adjust the roll gap inclination, increase the outer roll gap, and reduce the inner roll gap, so that the edge of the steel strip slowly moves outward until the edge of the steel strip coincides with the corresponding virtual line.

[0065] For steel strips of different widths, the position between the inner and outer edges of the steel strip and the inner and outer edge dotted lines on the monitoring screen of the steel strip edge monitor can be used for judgment. For example, if the center line of the steel strip coincides with the rolling center line, and the edges of the steel strip are within the dotted lines on both sides, the rolled steel strip is narrow; conversely, if the edges of the steel strip are outside the dotted lines on both sides, the rolled steel strip is too wide. In addition, when adjusting the steel strip that is too wide or too narrow, it is still necessary to use the dotted line drawn on the monitoring screen as the reference line 13, and adjust the roll gap inclination to control the distance between the edges of the steel strip and the dotted lines to be equal or close, so as to ensure the centering of the steel strip and improve the rolling effect of the steel strip.

[0066] Preferably, the monitoring equipment includes an inlet steel strip shape monitor arranged at the entrance of the rolling area 200 and an outlet steel strip shape monitor arranged at the exit of the rolling area 200. Both the inlet steel strip shape monitor and the outlet steel strip shape monitor are used to monitor the steel strip shape and promptly feed back the steel strip shape defects to the control device 300. The execution device includes a shape adjustment device arranged in the rolling area 200 for adjusting the steel strip shape.

[0067] It should be noted that during the rolling process, the steel strip will deform due to uneven force. Under a large force, the steel strip will wave, and then form a single-sided wave shape, a middle wave shape, or a double-sided wave shape. The operator can adjust the single-sided wave shape, the middle wave shape, and the double-sided wave shape of the steel strip by adjusting the roll gap inclination, the positive and negative bending roll force, based on the strip shape displayed on the monitoring screen of the strip shape monitor, combined with the reference roll gap difference, rolling force difference, tension difference and other parameters.

[0068] Preferably, the rolling area 200 includes an entrance coiler 201 for coiling the steel strip arranged at the entrance of the rolling area 200 and an exit coiler 202 for coiling the steel strip arranged at the exit of the rolling area 200; the monitoring equipment includes an entrance thickness gauge for measuring the thickness of the steel strip arranged at the entrance coiler 201 and an exit thickness gauge for measuring the thickness of the steel strip arranged at the exit coiler 202; the execution device includes a coiling device arranged at the uncoiling area 100 for conveying the raw material coil to the uncoiling machine 101, an entrance uncoiling device arranged at the entrance coiler 201 for unloading the steel strip that meets the thickness requirements after rolling, and an exit uncoiling device arranged at the exit coiler 202 for unloading the steel strip that meets the thickness requirements after rolling.

[0069] Preferably, an entrance coiler monitor and an exit coiler monitor for monitoring the steel strip coiling process may be respectively provided at the entrance coiler 201 and the exit coiler 202, and the operator may control the coiling operation according to the monitoring screen 9 of the entrance coiler monitor and the monitoring screen 10 of the exit coiler monitor.

[0070] It should be noted that the steel strip will be repeatedly rolled in the rolling area 200 until the thickness of the steel strip reaches the specified requirements, which can effectively ensure the rolling effect of the steel strip. Among them, the thickness gauge can transmit the steel strip thickness signal to the control device 300 in real time. When the steel strip reaches the preset target thickness, the inlet unloading device can be controlled to unload the steel strip at the inlet coiler 201, and the outlet unloading device can also be controlled to unload the steel strip at the outlet coiler 202.

[0071] Preferably, an operation monitor for monitoring the emulsion flow, temperature and pressure during the rolling process is provided in the rolling area 200 . The emulsion is used to cool and lubricate the steel strip. The operation monitor is connected to the control device 300 to transmit a monitoring signal to the control device 300 .

[0072] It should be noted that the reversible cold rolling mill needs to use emulsion for process cooling and lubrication during the rolling process, and use compressed air for purging to clean the steel strip surface. Therefore, an operation monitor for monitoring the emulsion flow, temperature, pressure and compressed air parameters during the rolling process can be set in the rolling area 200, so that the operator can ensure that the steel strip and the equipment are in normal operation by observing various parameters such as the emulsion flow, temperature, pressure and purging process points on the screen.

[0073] Preferably, the control device 300 also includes an on-site remote conversion device arranged on the on-site operation box of the reversible cold rolling mill, and the on-site remote conversion device is used to realize the conversion between remote rolling control and on-site maintenance control to facilitate later on-site maintenance.

[0074] Preferably, the setting positions and angles of each monitor of the reversible cold rolling mill remote control system provided by the present invention can refer to Figure 1 and Figure 2 , where 301 in the figure is a setting demonstration of the inlet operation side monitor and the outlet operation side monitor, 302 is a setting demonstration of the inlet drive side monitor and the outlet drive side monitor, 303 is a setting demonstration of the opening machine monitor and the billet head and tail monitor, 304 is a setting demonstration of the uncoiler monitor and the straightening machine monitor and the inlet coiler monitor and the outlet coiler monitor and the inlet steel strip shape monitor and the outlet steel strip shape monitor.

[0075] The present invention also provides a control method, which is applied to the above-mentioned reversible cold rolling mill remote control system, comprising:

[0076] S1, the control device 300 monitors the monitoring screen of the monitoring device of the unwinding area 100 in real time, so as to judge in real time whether there is a raw material coil on the unwinding machine 101, if not, the execution device of the unwinding area 100 is controlled to perform the coiling operation, if yes, the coiling operation is not performed;

[0077] S2, the control device 300 monitors the monitoring screens of the monitoring devices of the uncoiler 101 and the straightener 102 in real time, so as to judge in real time whether the uncoiling process and the straightening process of the raw material coil are normal. If yes, the control execution device transports the straightened steel strip to the rolling area 200 for rolling. If not, the operation is suspended for maintenance.

[0078] S3. The control device 300 monitors the monitoring screen of the monitoring equipment of the rolling area 200 in real time to judge the rolling process of the steel strip in real time. If the thickness of the steel strip after rolling meets the requirements, the control execution device will unroll the steel strip that meets the requirements. If the thickness of the steel strip after rolling does not meet the preset thickness requirements, the control execution device will repeat the rolling of the steel strip.

[0079] Preferably, S3 also includes: the control device 300 monitors the monitoring screen of the monitoring equipment of the rolling area 200 in real time, so as to judge the rolling process of the steel strip in real time; if position offset or abnormal plate shape deformation occurs during the rolling process of the steel strip, the control execution device performs rolling centerline adjustment and abnormal deformation adjustment operations on the steel strip; if position offset or abnormal plate shape deformation does not occur during the rolling process of the steel strip, the control execution device repeatedly rolls the steel strip until the rolled thickness of the steel strip meets the requirements.

[0080] In order to facilitate understanding and explanation of the reversible cold rolling mill remote control system and control method provided by the present invention, an example will be given below.

[0081] First, the monitoring screen transmitted by the monitoring device set in the unwinding area 100 can be used to check whether there is steel on the saddle. If a coiling operation is required, the raw material coil can be transported to the unwinding machine 101 by controlling the coiling device. Among them, when the coiling device performs the coiling operation, it can be divided into automatic coiling mode and manual coiling mode. If the automatic coiling mode is used for the coiling operation, the "automatic coiling" mode can be selected through the monitoring screen of the control device 300, and then the "start" button is clicked. Then, the coiling device will drop to the lower limit, and automatically move horizontally to the bottom of the raw material coil, and then rise to hold up the raw material coil. Then, after the width is measured, it stops moving, and then the coil diameter is measured to align the raw material coil axis with the unwinding reel axis. After that, click the "continue" button, the coiling device can automatically transport the raw material coil to the reel, and the center line of the raw material coil is aligned with the center line of the reel and stops, and the movable support is closed. Then, the pressure roller is pressed down, the reel expands, and the trolley drops to the lower limit, waiting for the next automatic process.

[0082] In addition, it should be noted that if the "manual winding" mode is required, the "manual winding" mode can be selected through the monitoring screen of the control device 300, and then the remote winding manual operation can be performed. The "actual position of the trolley" and the "set position of the trolley" in the monitoring screen of the control device 300 are compared, and combined with the monitoring screen located at the uncoiler 101, the operator manually controls the winding device and the various switches of the reel to realize the remote manual winding function.

[0083] After the coiling operation is completed, the operator can observe the monitoring screen 1 of the uncoiler monitor and the monitoring screen 2 of the opening machine monitor, and the control device 300 can control the execution device to adjust the strip head to the appropriate position, and then lift and extend the guide plate shovel head to the appropriate position, and then turn the uncoiler 101 to the straightening machine 102. Afterwards, the operator can observe the monitoring screen 4 of the straightening machine monitor to control the execution device to straighten the strip head. After the raw material roll is straightened, the operator observes the monitoring screen 3 of the blank head and tail monitor and combines the corresponding operations to pass the strip head to the appropriate position to wait for threading.

[0084] Then, the unwinder 101 is rotated to thread the strip. The operator determines the position of the strip head by observing the monitoring screen 14 of the steel strip running monitor and the monitoring screen of the exit coiler 202. After the strip head passes through the jaws of the exit coiler 202, the jaws are locked, the reel expands, and pre-winding is performed. During this period, the operator can observe the edge track of the steel strip by observing the monitoring screen 5 of the entrance transmission side monitor, the monitoring screen 6 of the exit transmission side monitor, the monitoring screen 7 of the entrance operation side monitor, and the monitoring screen 8 of the exit operation side monitor. If the steel strip is offset, it can be adjusted through the mechanical centering device to ensure that the center line of the steel strip coincides with the rolling center line during threading and pre-winding.

[0085] After that, the unit builds tension and starts rolling. Based on the strip shape conditions displayed on the monitoring screen 11 of the inlet strip shape monitor and the monitoring screen 12 of the outlet strip shape monitor, as well as the strip running track displayed on the monitoring screens of the inlet drive side monitor 5, the outlet drive side monitor 6, the inlet operation side monitor 7, the outlet operation side monitor 8, and the strip edge monitor, the operator controls the single-side wave shape, middle wave shape, and double-side wave shape of the strip by adjusting the roll gap inclination, positive and negative bending roll force, etc., in combination with the reference roll gap difference, rolling force difference, tension difference and other parameters.

[0086] In addition, when the running track of the steel strip edge is biased toward the operating side, the operator can adjust the roll gap inclination, appropriately increase the roll gap on the transmission side, and reduce the roll gap on the operating side, so that the running track of the steel strip is adjusted toward the transmission side; when the running track of the steel strip edge is biased toward the transmission side, the operator adjusts the roll gap inclination, appropriately increases the roll gap on the operating side, and reduces the roll gap on the transmission side, so that the running track of the steel strip is adjusted toward the operating side. When the running track of the steel strip is stably maintained on the reference line 13 drawn on the monitoring screen of the steel strip edge monitor, and the parameters such as the roll gap difference, the rolling force difference, and the tension difference are in a stable state, it can be judged that the steel strip is in a stable running state.

[0087] It should be noted that the on-site monitoring cameras of the entrance transmission side monitor, the exit transmission side monitor, the entrance operation side monitor, and the exit operation side monitor are all installed above the two sides of the steel belt, that is, the above monitoring cameras are all set vertically or approximately vertically to the surface of the steel belt, which can effectively ensure that the monitored steel belt running track is accurate. If there is a slight deviation in the actual running track of the steel belt edge, the operator can detect it in time. Moreover, compared with the original operator standing on the side of the steel belt and observing the running track of the steel belt with his eyes, this setting method is more accurate and can effectively avoid the impact of visual errors.

[0088] In addition, it should be noted that since the equipment and process conditions of each reversible cold rolling mill are different, the parameters such as roll gap difference, rolling force difference, tension difference, etc. are also different when the steel strip is under stable rolling state. In actual use, the parameters such as roll gap difference, rolling force difference, tension difference, etc. should be determined according to actual conditions and actual needs.

[0089] In addition, if the operator observes defects such as single-sided wave shape, middle wave shape, double-sided wave shape, etc. in the steel strip through the monitoring screen 11 of the inlet steel strip shape monitor and the monitoring screen 12 of the outlet steel strip shape monitor, the deformation of the steel strip can be adjusted online by combining parameters such as roll gap difference, rolling force difference, tension difference, etc. through roll gap inclination and positive and negative bending roll force.

[0090] Finally, when the steel strip is rolled, that is, when the thickness gauges at the entrance coiler 201 and the exit coiler 202 measure that the thickness of the steel strip meets the specified requirements, the operator can adjust the position of the tail of the strip by observing the monitoring screen of the entrance coiler 201 and the monitoring screen of the exit coiler 202, and then perform the unloading operation by controlling the entrance unloading device and the exit unloading device. Among them, the unloading operation process can be divided into "automatic unloading mode" and "manual unloading mode". When the operator selects the "automatic unloading mode", click the "start", "continue" and other buttons in sequence to complete the automatic unloading. During the automatic unloading process, the operator can compare the set position of the entrance unloading device and the exit unloading device with the actual position of the device by observing the monitoring screen of the entrance coiler 201 and the monitoring screen of the exit coiler 202, so as to monitor the operating status of the unloading device at any time.

[0091] It should also be noted that if the "manual unloading mode" is required, the operator can select the entry unloading device or the exit unloading device respectively, and then click "manual unloading mode" in combination with the monitoring screen of the entry coiler 201 or the monitoring screen of the exit coiler 202, and then remotely perform manual unloading operations. That is, the actual position of the entry unloading device or the exit unloading device can be compared with the set position of the device, and combined with the monitoring screen of the entry coiler 201 or the monitoring screen of the exit coiler 202, the unloading device and the coiler switches can be manually controlled, and finally the remote manual unloading function can be realized.

[0092] Preferably, the unloading device and the winding device can be set as an unloading trolley and a winding trolley, and the structure, shape, size, etc. of the unloading device and the winding device can be determined according to actual conditions and actual needs during actual use.

[0093] In addition, it should be noted that the orientation or positional relationship indicated by the "entrance", "exit", etc. in this application is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of simplifying the description and facilitating understanding, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0094] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. Any combination of all embodiments provided by the present invention is within the protection scope of this invention and will not be described in detail here.

[0095] The above is a detailed introduction to the reversible cold rolling mill remote control system and control method provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A reversible cold rolling mill remote control system, comprising a reversible cold rolling mill, wherein the reversible cold rolling mill is provided with an uncoiling area (100) and a rolling area (200), characterized in that: include: Monitoring equipment for monitoring the operation status, respectively arranged at key positions of the uncoiling area (100) and the rolling area (200), an execution device and a control device (300) for correspondingly controlling each execution operation, connected to the uncoiling area (100) and the rolling area (200), wherein the monitoring equipment and the execution device are both connected to the control device (300), and the control device (300) is used to receive the monitoring screen and monitoring signal of the monitoring equipment and to control the execution device to perform the corresponding operation; The uncoiling area (100) comprises an uncoiling machine (101) for uncoiling the raw material coil and a straightening machine (102) for straightening the uncoiling steel strip; The monitoring device comprises an inlet transmission side monitor arranged at the inlet transmission side of the rolling area (200) for monitoring the edge condition of the steel strip, an outlet transmission side monitor arranged at the outlet transmission side of the rolling area (200) for monitoring the edge condition of the steel strip, an inlet operation side monitor arranged at the inlet operation side of the rolling area (200) for monitoring the edge condition of the steel strip, and an outlet operation side monitor arranged at the outlet operation side of the rolling area (200) for monitoring the edge condition of the steel strip. The inlet transmission side monitor, the inlet operation side monitor, the outlet transmission side monitor and the outlet operation side monitor are all arranged vertically above both sides of the steel strip to accurately monitor the running track of the steel strip in the rolling area (200); The monitoring device comprises a steel strip operation monitor for real-time monitoring of the running condition of the steel strip and a steel strip edge monitor for real-time monitoring of the edge position of the steel strip, the steel strip operation monitor and the steel strip edge monitor are both arranged in the rolling area (200), and the monitoring screen of the control device (300) through which the signal of the steel strip edge monitor is transmitted is preset with a reference line (13) for remotely adjusting the motion trajectory of the steel strip; The execution device comprises a mechanical centering device respectively arranged at the entrance of the rolling area (200) and the exit of the rolling area (200), wherein the mechanical centering device is used to adjust the running track of the steel strip according to the reference line (13) during the strip threading process, so that the center line of the steel strip coincides with the rolling center line and the edge of the steel strip is aligned with the reference line (13); The monitoring device comprises an inlet steel strip shape monitor arranged at the inlet of the rolling area (200) and an outlet steel strip shape monitor arranged at the outlet of the rolling area (200), the inlet steel strip shape monitor and the outlet steel strip shape monitor are both used to monitor the steel strip shape and timely feed back the steel strip shape defects to the control device (300), and the execution device comprises a shape adjustment device arranged in the rolling area (200) for adjusting the steel strip shape; The rolling area (200) comprises an entrance coiler (201) for coiling the steel strip, which is arranged at the entrance of the rolling area (200), and an exit coiler (202) for coiling the steel strip, which is arranged at the exit of the rolling area (200); The monitoring equipment comprises an entry thickness gauge provided at the entry coiler (201) for measuring the thickness of the steel strip and an exit thickness gauge provided at the exit coiler (202) for measuring the thickness of the steel strip; The execution device comprises a coiling device arranged at the uncoiling area (100) for conveying the raw material coil to the uncoiling machine (101), an entrance uncoiling device arranged at the entrance coiler (201) for unloading the steel strip that meets the thickness requirement after rolling, and an exit uncoiling device arranged at the exit coiler (202) for unloading the steel strip that meets the thickness requirement after rolling; An entrance coiler monitor and an exit coiler monitor for monitoring the steel strip coiling process are respectively arranged at the entrance coiler (201) and the exit coiler (202).

2. The reversible cold rolling mill remote control system according to claim 1, characterized in that: The monitoring equipment comprises an uncoiler monitor for monitoring the operation of the uncoiler (101), a head-end machine monitor for monitoring the operation of the head-end machine, a blank head-end monitor for monitoring the condition of the steel strip after uncoiling, and a straightening machine monitor for monitoring the operation of the straightening machine (102). The uncoiler monitor, the head-end machine monitor, the blank head-end monitor, and the straightening machine monitor are arranged in the uncoiler area (100) in sequence.

3. The reversible cold rolling mill remote control system according to any one of claims 1 to 2, characterized in that: An operation monitor for monitoring the flow, temperature and pressure of the emulsion during the rolling process is provided in the rolling area (200); the emulsion is used to cool and lubricate the steel strip; and the operation monitor is connected to the control device (300) to transmit a monitoring signal to the control device (300).

4. The reversible cold rolling mill remote control system according to any one of claims 1 to 2, characterized in that: The control device (300) also includes an on-site remote conversion device arranged on the on-site operation box of the reversible cold rolling mill, and the on-site remote conversion device is used to realize the conversion between remote rolling control and on-site maintenance control to facilitate later on-site maintenance.

5. A control method, applied to the reversible cold rolling mill remote control system according to any one of claims 1 to 4, characterized in that: include: S1, the control device (300) receives the monitoring screen of the monitoring device of the unwinding area (100) in real time, so as to judge in real time whether there is a raw material coil on the unwinding machine (101); if not, the execution device of the unwinding area (100) is controlled to perform a coiling operation; if yes, the coiling operation is not performed; S2, the control device (300) receives the monitoring screens of the monitoring devices of the uncoiler (101) and the straightener (102) in real time, so as to judge in real time whether the uncoiler process and the straightening process of the raw material coil are normal; if so, the control execution device transports the straightened steel strip to the rolling area (200) for rolling; if not, the operation is suspended for maintenance; S3, the control device (300) receives the monitoring screen of the monitoring equipment of the rolling area (200) in real time, so as to judge the rolling process of the steel strip in real time; if the thickness of the steel strip after rolling meets the requirements, the control execution device unwinds the steel strip that meets the requirements; if the thickness of the steel strip after rolling does not meet the preset thickness requirements, the control execution device repeats the rolling of the steel strip; The S3 also includes: the control device (300) receives the monitoring screen of the monitoring equipment of the rolling area (200) in real time, so as to judge the rolling process of the steel strip in real time; if the position offset or abnormal plate shape deformation occurs during the rolling process of the steel strip, the control execution device performs rolling center line adjustment and abnormal deformation adjustment operations on the steel strip; if the position offset or abnormal plate shape deformation does not occur during the rolling process of the steel strip, the control execution device repeatedly rolls the steel strip until the rolled thickness of the steel strip meets the requirements.

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