A silicon steel winding double deviation correction control system and method with temperature monitoring

Abstract

The application is a silicon steel winding double deviation correction control system and method with temperature monitoring, which comprises a control system and a storage module, a calculation module, an HMI module, a deviation correction module one, a deviation correction module two and a winding machine control module connected with the control system. The application has the following advantages: it can ensure continuous and stable production as much as possible, does not produce deviation, can reasonably control the winding tension and ensure product quality. The configuration of the system is improved, the control is optimized and the industry problems can be better solved. It can also be applied in the silicon steel notch line of the factory, and stable tension and continuous operation can better ensure the quality and effect of the silicon steel surface notch, and can improve the surface treatment process quality treatment effect. When the two sets of deviation correction modules work at the same time, deviation correction still occurs, that is, the continuous abnormal deviation of the deviation correction module two cannot be adjusted, and the system can be prewarned for some mechanical failure or imbalance, and the alarm shutdown can be used as a maintenance warning signal of the winding line and as a basis for system maintenance and maintenance.

Description

TECHNICAL FIELD

[0001] The present application relates to a silicon steel winding double deviation correction control system and method with temperature monitoring. BACKGROUND

[0002] In the production and application of silicon steel, many process links such as spraying and scoring need to be re-wound. In the re-winding process, the deviation, unbalanced running and too small or too large winding tension caused by the quality of the silicon steel raw material, mechanical problems or operation may cause the product to be unevenly wound, collapsed and inwardly exploded, which has a significant impact on the quality of the silicon steel roll product, winding accuracy, production efficiency, storage, subsequent transportation and safety. Therefore, stability and continuous production are very important.

[0003] There are some deviation correction devices and systems in the prior art, such as CN104724528A discloses an aluminum foil deviation correction device, and CN105819259A discloses a strip winding deviation correction system and its control method. The principle of these systems is mainly to detect the deviation signal and position feedback, and then use the control system or mechanical device to control the corresponding movement and operation to realize tracking correction. Such a system has a single function, and the correlation between tension, speed, roll diameter and material parameters and product quality is not comprehensive. The system does not consider the possible situations and does not monitor and protect the winding quality. The system can be used normally under the premise of stable balance of the entire winding system and good material, but it is very unstable when the silicon steel has a taper, a large difference between the two sides, a slight imbalance of the mechanical system, improper operation, etc. It is easy to continuously deviate to the limit and cannot produce continuously. It also cannot guarantee the quality and accuracy of the wound product.

[0004] For silicon steel rolls with a relatively thin thickness, inward explosion of the inner circle is very easy to occur when the roll is unloaded after winding. This not only affects the quality of the silicon steel strip, but also brings great difficulty to the production of the next winding process. The inward explosion of the inner circle is mainly related to the thickness of the silicon steel, the winding tension, the weight of the steel roll and the roughness of the silicon steel. For a certain raw material thickness, the main task is to control the winding tension. Too large tension will cause inward explosion of the inner circle, and too small tension will cause the roll to collapse. Therefore, the tension needs to be monitored and adjusted.

[0005] Many factors influence the radial pressure on the drum, including the drum diameter, the radial stiffness of the strip coil and the drum (interlaminar deformation effect and expansion / contraction performance), the interlaminar medium of the drum, the surface condition of the drum, the initial winding tension, the strip width, the interlaminar slippage of the strip coil, and the interlaminar friction of the strip coil. Because many factors are difficult to analyze theoretically and experimentally, the radial pressure on the drum cannot currently be accurately calculated. However, the radial pressure value is crucial; the strength calculation and selection of inner-lined drum components, as well as the winding quality, all require reference to the radial pressure value. Conventional and ordinary control methods based on formulas are insufficient to accommodate so many variables, are complex, and are prone to uncontrollable factors. Summary of the Invention

[0006] This invention proposes a dual-correction control system and method for silicon steel coiling with temperature monitoring, aiming to overcome the aforementioned shortcomings of existing technologies.

[0007] The technical solution of this invention: A dual-correction control system for silicon steel coiling with temperature monitoring, comprising a control system and a storage module, a calculation module, an HMI module, a correction module one, a correction module two, and a coiling machine control module connected to the control system signals.

[0008] The first correction module includes a steel strip photoelectric detection device (photoelectric edge detection sensor), a winding machine position sensor (position detection sensor), a winding machine, a winding machine base (winding machine platform), a winding machine hydraulic system (hydraulic system), and a winding machine shaft.

[0009] The photoelectric edge detection sensor is positioned near the upper edge of the steel strip, consisting of a transmitter and a receiver. The transmitter is positioned above the steel strip, and the receiver is positioned below it. When the steel strip is obstructed, the received signal strength changes. Based on the graded strength signal conversion according to the deviation amount, the signal is transmitted to the control system. After acquisition and comparison, the hydraulic system drives the winding machine to move laterally along the guide rail to correct the deviation, ensuring that the steel strip runs in a straight line during winding.

[0010] The position detection sensor is mounted on the winding machine platform. The sensor's probe rod is connected to the winding machine's lateral moving part. When the probe rod moves with the winding machine, the position detection sensor signal changes accordingly. This DC 0-10V signal is transmitted to the control system.

[0011] The winding machine is mounted on a winding machine platform via guide rails, the winding machine shaft is mounted on the winding machine, and the steel coil is fixed on the winding machine shaft.

[0012] The control system receives the steel strip deviation signal transmitted by the photoelectric edge detection sensor and the winding machine position signal transmitted by the position detection sensor, calculates the deviation in real time, generates a control signal through PID adjustment, controls the hydraulic valve system of the hydraulic system and performs power amplification, drives the execution hydraulic system, thereby moving the winding machine, the winding machine shaft and the steel coil on the winding machine shaft on the guide rail of the winding machine platform to move horizontally and correspondingly to correct the deviation, and ensure the straight running of the steel strip;

[0013] The second deviation correction module includes an outer temperature sensor, an inner temperature sensor, an ambient temperature sensor, a pressure station, an outer pressure valve, a middle pressure valve, an inner pressure valve, an outer limit switch, an inner limit switch, a position detection sensor in the first deviation correction module, a tension detection sensor and a tension roller, and an ultrasonic coil diameter measurement sensor,

[0014] The outer temperature sensor and the inner temperature sensor are arranged above the two sides of the steel coil on the winding machine shaft, and the ambient temperature sensor is arranged on the support of the pressure station, which detects the temperature on both sides of the silicon steel coil and the ambient temperature in real time, and transmits the signal to the control system after conversion,

[0015] The pressure station is provided with an outer pressure valve on the outer side, a middle pressure valve in the middle, and an inner pressure valve on the inner side, which are respectively adjusted by a manual knob to set the opening degree or automatically controlled by the control system according to the calculated conditions and parameters,

[0016] The outer limit switch and the inner limit switch are arranged on both sides of the steel strip to control the limit position of the movable range of the machine, which plays a protective role, and stops working and alarms when the limit switch is automatically adjusted,

[0017] The tension detection sensor and the tension roller are arranged behind the pressure station to detect the real-time tension value, which is transmitted to the control system after analog-digital conversion,

[0018] The ultrasonic detection sensor is installed on the right lower side of the winding machine ground, which is used to detect the winding diameter in real time and transmit the digital signal to the control system,

[0019] The winding machine control module includes the ultrasonic detection sensor in the second deviation correction module, the tension detection sensor in the second deviation correction module, the line speed sensor and the winding machine frequency converter,

[0020] The line encoder speed detection sensor is an encoder arranged on the winding machine shaft, which detects the winding machine speed and feeds back to the control system.

[0021] A control method of a silicon steel winding double deviation correction control system with temperature monitoring, comprising:

[0022] The first deviation correction module receives signals with varying strength when the steel belt is blocked, and the graded strength signals of the deviation amount are transmitted to the control system after conversion. The control system judges whether the deviation occurs and collects the position of the winding machine in real time, compares the deviation amount, and performs PID adjustment to give a control signal. The winding machine is driven to move horizontally by the hydraulic system to correct the deviation and ensure the straight-line operation of the steel belt.

[0023] The second deviation correction module detects the temperature of the silicon steel product on both sides of the winding machine. The control system dynamically controls the opening of the outer pressure valve, the middle pressure valve, and the inner pressure valve of the pressure station according to the position of the steel belt, the temperature of the steel coil, and the pressure signal of the pressure valve to control the pressure at the inner, middle, and outer positions of the belt width direction, achieving system balanced operation and silicon steel belt centering. The temperature measurement is used to monitor whether the corresponding side winding tension is normal to prevent coil explosion and collapse. When the temperature is too high, the system adjusts the pressure accordingly. The principle of pressure adjustment and balance is based on the following characteristics of the system: increasing the pressure on the inner side and reducing the pressure on the outer side, moving the system to the outer side, reducing the pressure on the inner side and increasing the pressure on the outer side, moving the system to the inner side. The middle valve pressure is used to calculate the average tension. If the middle valve pressure is high, the tension is high, and the winding is tighter. The outer and inner valve pressures are not sensitive to changes, which can easily cause overheating. During winding, first determine whether it is a small coil diameter. The small coil diameter range is extracted from the system table value and can be changed according to different products. If the detected temperature does not exceed the set allowable temperature, the temperature rise on both sides of the winding product is controlled. If the temperature exceeds the first level, the middle valve pressure is set to the first level. If the temperature exceeds the second level, the system delays and alarms to stop the machine for manual intervention. The second deviation correction module also collects the position of the winding machine in real time to determine whether the deviation occurs. If the deviation occurs, the deviation level is determined. If the deviation level is the first level, the first level speed is set, and the middle valve is set to the first level pressure. The system also judges the deviation direction. If the deviation is to the inner side, the system adjusts the deviation according to the inner deviation amount, compares the table value, and calculates the adjustment to give the inner and outer valve control signals. The system adjusts the pressure and reestablishes the balance. At the same time, the system judges whether the steel belt reaches the outer limit. If it does, the system alarms and delays to stop the machine. If the deviation is to the outer side, the system adjusts the deviation according to the outer deviation amount, compares the table value, and calculates the adjustment to give the inner and outer valve control signals. The system adjusts the pressure and reestablishes the balance. At the same time, the system judges whether the steel belt reaches the inner limit. If it does, the system alarms and delays to stop the machine. If the deviation level is the second level, the second level speed is set, and the middle valve is set to the second level pressure. The system also judges the deviation direction and controls it in the same way as the first level deviation. If the deviation level is the third level, the system alarms and delays to stop the machine.

[0024] The winding machine control module, the steel coil of the winding mechanism increases the radius constantly along with the operation of the production line, causes the tension to be larger, compensates the interference caused by the radius change, adopts the tension control of the radius compensation of the winding, adopts the ultrasonic measurement of the steel coil diameter and converts into the radius, changes the rotation speed of the winding motor by changing the operation frequency, that is, changes the rotation speed of the winding roller, and the influence of the radius change of the winding roller on the tension can be compensated; that is, when the radius increases, the operation frequency decreases correspondingly, and then the rotation speed of the winding roller decreases; the frequency converter controls the winding motor, the tension of the steel belt is detected before the winding roller, is converted into a digital quantity through a modulus conversion and is transmitted to a control system, difference value operation is carried out with a given signal in the control system; the result is output to the frequency converter through digital-analog conversion of the control system, the winding motor is driven, and closed loop control is formed.

[0025] The advantages of the present application are: ensuring continuous and stable production as much as possible, not producing deviation, reasonably controlling winding tension, and ensuring product quality. The system and method improve the configuration of the system, optimize control, and better solve industry problems. It can also be applied to the silicon steel notch line in the factory, and stable tension and continuous operation can better ensure the quality and effect of the silicon steel surface notch, and can improve the surface treatment process quality treatment effect. When the two sets of deviation correction modules work at the same time, deviation correction still occurs, that is, the continuous abnormal deviation of the deviation correction module two cannot be adjusted, and the system can be prewarned for some mechanical failure or imbalance, and alarm shutdown can be used as a maintenance prewarning signal of the winding line, and as a basis for system maintenance and maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of the silicon steel winding double deviation correction control system with temperature monitoring of the present application applied to a silicon steel winding production line.

[0027] Figure 2 is a principle diagram of the silicon steel winding double deviation correction control system with temperature monitoring of the present application.

[0028] Figure 3 is Figure 2 the control flow chart of the deviation correction module one.

[0029] Figure 4 is Figure 2 the control flow chart of the deviation correction module two. DETAILED DESCRIPTION

[0030] The present application will be further described in detail in combination with examples and specific embodiments.

[0031] In view of the above-mentioned defects of the prior art, specifically, according to the industry formula and the experience of the characteristics of the silicon steel product, the inward pressure of the silicon steel coil decreases with the increase of the coiling diameter, but the prior art generally only detects the real-time tension, and cannot effectively judge the influence on the product, the winding tension is affected by various factors and may change, but the short-time over-standard tension does not affect the winding quality of the product, the time accumulation of the abnormal tension may cause quality change, the introduction of the temperature rise parameter can reflect the tension change in a certain time and the influence on the winding quality of the product, and the temperature rise is the cumulative reaction of the tension change in the current period. Especially in the starting stage of winding, the control of the tension should be paid special attention, the tension is large, the time is short, and there is no problem, the tension is large for a long time, and the temperature rise of the product is caused, especially the two side parts, which leads to the increase of the internal pressure, and the coil is easily exploded when being unloaded. According to the research and actual test experience, the allowed temperature rise value in different stages of winding is found, and the tension, speed and start-stop decision are correspondingly added or reduced according to the change of the temperature rise, so that the possible winding quality problem of the product can be effectively solved.

[0032] Further, in view of the above-mentioned technical problems and improvement needs of the prior art, the present application provides a silicon steel winding double deviation correction control system and method with temperature monitoring, wherein,

[0033] A silicon steel winding double deviation correction control system with temperature monitoring comprises a deviation correction module one, a deviation correction module two with temperature rise control and a winding machine control module. Some signals are used by different modules, different modules are controlled independently and are related to each other, and the optimization control of continuous production and product quality guarantee is realized. The silicon steel winding line with the control system of the present application can realize real-time detection and early warning of the balance of the whole production line.

[0034] Specifically, in the three modules of the control system, the deviation correction module one comprises a position detection sensor 13, an optical edge detection sensor 15, a winding machine 11 and a hydraulic system 10; the deviation correction module two comprises a tension detection sensor 32, a ring temperature detection sensor 34 and a product temperature detection sensor (an outer temperature detection sensor 21 and an inner temperature detection sensor 22), and a pressure balance deviation correction control system comprising a coil diameter measurement sensor (an ultrasonic detection sensor 29), a position detection sensor 13 and three pressure valves (an outer pressure valve 24, a middle pressure valve 25 and an inner pressure valve 26) of a pressure station 23; and the third module comprises a coil diameter measurement sensor, a tension detection sensor 32, a production line encoder speed detection sensor 18 and a winding machine control module comprising a frequency converter of the winding machine 11.

[0035] Three module components and devices are connected with the control system 50 and coordinated real-time control by the control system 50. When the module one detects the deviation signal by the photoelectric edge detection sensor 15, the control system 50 combines the position sensor signal to calculate the control of the winding machine 11 servo adjustment. The pressure station 23 of the module two has three pressure valves inside and outside, and the control system 50 controls the real-time table according to the winding material temperature rise, system tension, winding diameter, winding machine position and three pressure valve position signals, etc. When the product over-temperature rise occurs, it will alarm to stop production, and keep the whole system tension balance and centering, to ensure the product quality and production line stability. The winding machine 11 of the module three is driven by the winding motor according to the given speed, and the winding speed is calculated and controlled by the frequency converter according to the winding diameter measurement sensor and tension detection sensor 32 signals, to ensure the stability of the winding tension.

[0036] The winding machine position detection, ultrasonic diameter detection and tension detection of each module use the same signal source. The speed, pressure and temperature rise in the system are controlled in stages, and the temperature rise data is related to the completed winding meters, which is automatically given by the system according to the winding meters. The high level of each item does not represent a large value, and the level parameters of each item are set according to the actual production experience and can be adjusted and saved in the storage module according to the experience setting in the upper HMI module of the control system.

[0037] In order to achieve the above functions, a silicon steel winding double correction control system with temperature monitoring is provided, specifically as shown in Figure 1

[0038] The deviation correction module one includes a steel belt photoelectric detection device (photoelectric edge detection sensor 15), a winding machine position sensor (position detection sensor 13), a winding machine 11, a winding machine base (winding machine platform 16), a winding machine hydraulic system (hydraulic system 10), a winding machine shaft 12 and a control system 50.

[0039] The photoelectric edge detection sensor 15 is installed near the edge of one side above the steel belt 31, and the detection device has a transmitting end and a receiving end. The transmitting end is installed above the steel belt 31, and the receiving end is installed below the steel belt 31. When the steel belt 31 is blocked, the receiving signal will change in strength, and the graded strength signal of the deviation amount is converted to the control system 50, which is collected and compared, and then the winding machine 11 is driven by the hydraulic system 10 to move horizontally (along the guide rail 14) to correct the deviation, to ensure the straight-line running of the steel belt 31.

[0040] The position detection sensor 13 is installed on the winding machine platform 16, and the detection rod of the position detection sensor 13 is connected to the horizontal moving part of the winding machine 11. When the rod moves with the winding machine 11, the position detection sensor 13 signal will change accordingly, and the DC 0-10V signal is given to the control system 50.​

[0041] The floating coiler (coiler 11) is mounted on the coiler platform 16 through the guide rail 14, the coiler shaft 12 is mounted on the coiler 11, and the steel coil 30 is fixed on the coiler shaft 12.

[0042] The control system 50 receives the steel strip deviation signal transmitted by the photoelectric edge detection sensor 15 and the coiler position signal transmitted by the position detection sensor 13, calculates the deviation in real time, generates a control signal through PID adjustment, controls the hydraulic valve system 17 of the hydraulic system 10 and performs power amplification, drives the execution hydraulic system 10, so as to move the coiler 11, the coiler shaft 12 and the steel coil 30 on the coiler shaft 12 on the guide rail 14 of the coiler platform 16 to move transversely and correct the deviation, so as to ensure the straight running of the steel strip.

[0043] The deviation correction module two includes the outer temperature sensor 21, the inner temperature sensor 22, the environmental temperature sensor (ambient temperature detection sensor 34), the pressure station 23, the outer pressure valve 24, the middle pressure valve 25, the inner pressure valve 26, the outer limit switch 27, the inner limit switch 28, the coiler position sensor (position detection sensor 13), the tension detection sensor 32 and the tension roller 33, and the ultrasonic coil diameter measurement sensor (ultrasonic detection sensor 29) and the control system 50.

[0044] The outer temperature sensor 21 and the inner temperature sensor 22 are mounted above the two sides of the steel coil 30 on the coiler shaft 12, and the ambient temperature detection sensor 34 is mounted on the bracket of the production line pressure station 23, which detects the temperature of the two sides of the silicon steel coil and the environmental temperature in real time, and the signal is converted to the control system 50.

[0045] The pressure station 23 has three pressure valves, namely the outer pressure valve 24 on the outer side, the middle pressure valve 25 in the middle and the inner pressure valve 26 on the inner side. The opening degree of the three valves can be adjusted by manually rotating the knob to set the resistance value, or the opening degree can be automatically controlled by the control system 50 according to the calculation of various conditions and parameters.

[0046] The outer limit switch 27 and the inner limit switch 28 are mounted on both sides of the steel strip 31 to control the limit position of the movable range of the machine, which plays a protection role. When the limit switch is adjusted automatically, the machine will stop and alarm, and the signal is input to the control system 50.

[0047] The position detection sensor 13 is mounted on the coiler platform 16, and the detection rod of the position detection sensor 13 is connected to the transverse moving part of the coiler 11. When the rod moves with the coiler 11, the signal of the position detection sensor 13 will change accordingly, and the DC 0-10V signal is input to the control system 50.

[0048] Tension detection sensor 32 and tension roller 33 are installed behind the pressure station 23, for detecting real-time tension value, after analog-digital conversion, for the control system 50.

[0049] Ultrasonic detection sensor 29 is installed on the right lower side of the steel coil 30 of the coiler 11, for real-time detection of the coiling diameter, and digital signal transmission to the control system 50.

[0050] The coiler control module includes a coil diameter measurement sensor (ultrasonic detection sensor 29), a tension detection sensor 32, a line speed sensor (line encoder speed detection sensor 18), a coiler frequency converter, and a control system 50.

[0051] Ultrasonic detection sensor 29 is installed on the right lower side of the steel coil 30 of the coiler 11, for real-time detection of the coiling diameter, and digital signal transmission to the control system 50.

[0052] Tension detection sensor 32 and tension roller 33 are installed behind the pressure station 23, for detecting real-time tension value, after analog-digital conversion, for the control system 50.

[0053] The line encoder speed detection sensor 18 is an encoder installed on the coiler shaft 12, for detecting the speed of the coiler 11 and feeding back to the control system 50.

[0054] According to the above structure, a silicon steel coiling double correction control method with temperature monitoring includes:

[0055] As shown in Figure 1 , 2 , 3, the correction module one, when the steel strip 31 is blocked, the received signal will change in strength, the graded strength signal of the deviation amount is converted and transmitted to the control system 50, the system judges whether the deviation, the system collects the position of the coiler 11 in real time, compares and calculates the PID adjustment, and gives the control signal, drives the coiler 11 to move horizontally through the hydraulic system 10 to correct the deviation, and ensures the straight-line operation of the steel strip 31 for coiling.

[0056] As shown in Figure 1 , 2 , 4: the correction module two, a pressure station 23 is set in front of the coiler 11 in the production line, three pressure valves are set on the pressure station 23, and the temperature of the silicon steel product on both sides of the coiler 11 is detected, the control system 50 controls the opening of the three pressure valves according to the signals of the steel strip position, the steel coil temperature and the pressure of the pressure valve, to control the pressure of the inner, outer and middle positions of the steel strip in the width direction, so as to achieve the balanced operation of the whole system and the centering of the silicon steel strip, and ensure the coiling quality of the product and the stability of the system.

[0057] Temperature measurement is to monitor whether the corresponding side coiling tension is normal, to prevent possible coil explosion and collapse. When the temperature is too high, the system will adjust the pressure accordingly.

[0058] The principle of pressure regulation balance is that the system is floating, so the system has the following characteristics: the inside is pressurized, the outside is depressurized, the system will move to the outside, the inside is depressurized, the outside is pressurized, the system will move to the inside. The middle valve pressure is the basis for adjustment, which is used to calculate the average tension. If the middle valve pressure is high, the tension will be high, the winding will be tighter, and the inside and outside valve pressure changes will be less sensitive, but it is easy to overheat.

[0059] When winding, the system first determines whether it is currently a small roll diameter. The small roll diameter range is extracted from the system table value, which can be set and changed according to different products. If the set temperature rise is detected and found in the small roll diameter case, an alarm will be given to stop the machine. If the temperature is not over, the temperature rise on both sides of the winding product will be controlled subsequently. If the first level is overheated, the middle valve pressure will be set to the first level pressure. If the second level is overheated, the alarm will be delayed and the machine will be stopped for manual intervention.

[0060] The deviation correction module II also collects the position of the winding machine 11 in real time and determines whether it is running off. If it is running off, it is determined whether the running off is classified. If it is a first level running off, the first level speed is set and the middle valve is set to the first level pressure. The system also determines the deviation direction. If it is inside deviation, the inside deviation offset table comparison calculation is adjusted according to the inside deviation offset table comparison calculation, the inside and outside valve control signals are given, the inside valve pressure is increased and the outside valve pressure is decreased, the system pressure changes to reestablish the balance, and the system determines whether the steel belt reaches the outer limit. If it reaches, the alarm will be delayed and the machine will be stopped. If it is outside deviation, the outside deviation offset table comparison calculation is adjusted according to the outside deviation offset table comparison calculation, the inside and outside valve control signals are given, the outside valve pressure is increased and the inside valve pressure is decreased, the system pressure changes to reestablish the balance, and the system determines whether the steel belt reaches the inner limit. If it reaches, the alarm will be delayed and the machine will be stopped. If the running off classification is a second level running off, the second level speed is set and the middle valve is set to the second level pressure. The system also determines the deviation direction and controls it in the same way as the first level running off. If the running off classification is a third level running off, the alarm will be delayed and the machine will be stopped.

[0061] The winding machine control module is a conventional automatic closed-loop control, which can be realized by the prior art, and does not belong to the range to be protected by the present application, so it is not described repeatedly: the steel coil of the winding mechanism continuously increases in radius along with the operation of the production line. If the speed of the winding roller is kept unchanged, the tension of the steel strip on the winding roller will increase. Due to the continuously increasing radius of the winding roller, the tension becomes large, so it is necessary to compensate for the interference caused by the change in radius, so the winding adopts a radius compensation tension control scheme, uses ultrasonic measurement of the steel coil diameter and conversion into radius, changes the running frequency to change the speed of the winding motor, which changes the speed of the winding roller, thereby compensating for the influence of the change in the radius of the winding roller on the tension. That is, when the radius increases, the running frequency decreases accordingly, and the speed of the winding roller decreases accordingly. The winding motor is controlled by the frequency converter, the tension of the steel strip is detected before the winding roller, the digital quantity is converted into an analog quantity by analog-digital conversion, and is transmitted to the control system. In the control system, the given signal is subjected to difference operation. The result is output to the frequency converter through digital-analog conversion of the control system, and the winding motor is driven to form a closed-loop control.

[0062] In the entire automatic control system of the present application, in addition to the winding machine, a pressure station, a tension roller, a temperature detector, and a coil diameter detector are also provided. The three valves of the pressure station are controlled according to the position of the winding machine, the tension feedback, and the temperature detection signals on both sides of the product, so as to keep the system tension balanced, prevent deviation, and smoothly wind, so that the finished silicon steel coil is properly tight and neatly wound, and the winding quality of the product and the stability of the system are ensured. Real-time temperature detection on both sides of the winding product is to monitor the temperature rise of the corresponding side of the steel coil, judge whether the winding quality is normal according to the temperature rise value, and prevent possible coil explosion and collapse. Since the internal pressure of the steel coil, the coil diameter, and the temperature rise are all nonlinear relationships, the look-up table method is used to control the best empirical value summarized. This method has the advantages of flexible control and can adapt to various application situations. Different parameter templates can be generated and recorded according to the product specifications. When abnormal situations such as over-temperature rise and deviation occur, the system can compare the current values of each parameter with the preset data calculated by the industry experience formula through the look-up table comparison method, and perform corresponding optimal control, such as adjusting the valve pressure in the tension station to change the winding tension to improve the winding quality and precision, and adjusting the inner and outer valves to keep the system balanced. The numerical values at each level can be set through HMI to control the internal parameters of the system. When the coil diameter is small, over-temperature is not allowed, otherwise the alarm will stop the machine to prevent coil explosion. After the winding reaches a certain diameter, the over-temperature value range is classified, the first level over-temperature slows down the speed for continuous production, and the second level over-temperature alarms to stop the machine, which controls more accurately.

[0063] When the entire winding system is balanced and stable, and the material is good, only start the deviation correction module 1. When the silicon steel has taper, the difference between the two sides is large, the mechanical system is unbalanced, the operation is improper, and the winding system is in an unstable state, it is easy to continue to deviate and frequently stop. At this time, the system starts the deviation correction module 2 to achieve better deviation correction effect and achieve continuous and stable production effect. However, when the deviation correction module 2 is started, if the system always deviates to one side, such as the inside, the deviation correction module will increase the inner valve pressure and reduce the outer valve pressure to balance the system by referring to the middle valve pressure. However, if the system is seriously unbalanced, the deviation correction module 2 cannot return the steel strip to the center position, and the continuous one-sided pressure deviation will increase the internal stress of the corresponding side of the wound product, increase the risk of explosion after unloading, and affect the product quality. The phenomenon of increasing the internal stress of the product is that the temperature of the product rises abnormally. When the deviation correction module 2 is started, the temperature of the product on both sides is detected. When the temperature rises abnormally, the control system will take appropriate control methods, such as reducing the line speed, reducing the middle valve pressure to reduce the winding tension, and simultaneously adjusting the pressure output values of the two sides of the reset pressure station. If the system returns to normal, the production will continue. However, when the deviation exceeds the limit or the temperature rise exceeds the limit, an alarm will be issued to stop the machine to avoid affecting the winding quality. This situation is rare but should be paid attention to. The continuous abnormal deviation that cannot be adjusted by the deviation correction module 2 may be due to some mechanical failure or imbalance of the system. This alarm stop can be used as a maintenance warning signal for the winding line and as a basis for system maintenance.

[0064] Embodiment

[0065] Critical pressure calculation formula:

[0066]

[0067] In the formula, D is the inner diameter of the steel coil; E is the elastic modulus of the steel strip; μ

[0068] B is the Poisson's ratio of the steel material; B is the thickness of the steel strip.

[0069] Control parameter table 1: winding critical pressure calculation table

[0070]

[0071] Control parameter table 2: coil diameter temperature rise parameter table

[0072] Serial number Steel coil internal pressure calculation value Coil diameter value mm Temperature rise value

[0073] Control parameter table 3: offset amount corresponding valve control given parameter table

[0074] Serial number Runout amount calculation value Deviation direction Middle valve pressure given Outer valve pressure given Inner valve pressure given

[0075] Control parameter table 4: offset amount corresponding valve control given parameter table

[0076]

[0077] The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept, and these all belong to the protection scope of the present application.

Claims

1. A silicon steel winding dual rectification control system with temperature monitoring, characterized in that, The control system is connected with a storage module, a calculation module, an HMI module, a first deviation correction module, a second deviation correction module and a winding machine control module, wherein, The first deviation correction module comprises a steel strip photoelectric detection device, i.e., a photoelectric edge detection sensor, a winding machine position sensor, i.e., a position detection sensor, a winding machine, a winding machine seat, i.e., a winding machine platform, a winding machine hydraulic system, i.e., a hydraulic system, and a winding machine shaft, The photoelectric edge detection sensor is arranged near a side edge above the steel strip and has a transmitting end and a receiving end. The transmitting end is arranged above the steel strip, and the receiving end is arranged below the steel strip. When the steel strip is blocked, the receiving signal will change in strength. According to the strength of the signal, the control system is transmitted after conversion. After collection and comparison, the winding machine is driven to move horizontally along the guide rail by the hydraulic system to correct the deviation and ensure the straight running of the steel strip. The position detection sensor is arranged on the winding machine platform. The detection rod of the position detection sensor is connected to the horizontal moving part of the winding machine. When the detection rod moves with the winding machine, the signal of the position detection sensor will change accordingly. The DC 0-10V signal is transmitted to the control system. The winding machine is arranged on the winding machine platform through the guide rail. The winding machine shaft is arranged on the winding machine. The steel coil is fixed on the winding machine shaft. The control system receives the deviation signal of the steel strip transmitted by the photoelectric edge detection sensor and the position signal of the winding machine transmitted by the position detection sensor, calculates the deviation in real time, generates a control signal after PID adjustment, controls the hydraulic valve system of the hydraulic system and performs power amplification, drives the execution hydraulic system, and moves the winding machine, the winding machine shaft and the steel coil on the winding machine shaft horizontally on the guide rail of the winding machine platform to correct the deviation and ensure the straight running of the steel strip. The second deviation correction module comprises an outer temperature sensor, an inner temperature sensor, an ambient temperature sensor, a pressure station, an outer pressure valve, a middle pressure valve, an inner pressure valve, an outer limit switch, an inner limit switch, the position detection sensor in the first deviation correction module, a tension detection sensor, a tension roller and an ultrasonic coil diameter measurement sensor. The outer temperature sensor and the inner temperature sensor are arranged above the two sides of the steel coil on the winding machine shaft. The ambient temperature sensor is arranged on the bracket of the pressure station. The temperature of the two sides of the steel coil and the ambient temperature are detected in real time. The signal is converted and transmitted to the control system. The pressure station is provided with an outer pressure valve on the outer side, a middle pressure valve in the middle and an inner pressure valve on the inner side. The opening degree is adjusted by manually rotating the knob or automatically controlled by the control system according to the calculation of the conditions and parameters. The outer limit switch and the inner limit switch are arranged on the two sides of the steel strip to control the limit position of the movable range of the machine and play a protection role. When the limit switch is adjusted automatically, the machine stops and alarms. The signal is input to the control system. The tension detection sensor and the tension roller are arranged behind the pressure station to detect the real-time tension value. The signal is converted and transmitted to the control system. The ultrasonic detection sensor is arranged on the right lower side of the winding machine to detect the winding diameter in real time and transmit the digital signal to the control system. The winding machine control module comprises an ultrasonic detection sensor in the deviation correction module two, a tension detection sensor in the deviation correction module two, a production line speed sensor, i.e. a production line encoder speed detection sensor, and a winding machine frequency converter, The production line encoder speed detection sensor is an encoder arranged on the winding machine shaft, which detects the winding machine speed and feeds back to the control system.

2. The control method of a silicon steel winding dual deviation correction control system with temperature monitoring according to claim 1, characterized in that, It comprises: The deviation correction module one, when the steel belt is blocked, the received signal will change in strength, the graded strength signal of the deviation amount is converted and transmitted to the control system after conversion, whether the deviation is judged and the winding machine position is collected in real time, and the PID adjustment is calculated by comparing the deviation amount to give the control signal, the deviation is corrected by driving the winding machine to move horizontally through the hydraulic system, and the straight-line operation of the steel belt is ensured; The deviation correction module two, which detects the temperature of the silicon steel product on both sides of the winding machine, the control system controls the opening of the outer pressure valve, the medium pressure valve and the inner pressure valve of the pressure station according to the steel belt position, the steel roll temperature and the pressure valve pressure signal, so as to control the pressure of the inner, middle and outer positions in the width direction, so as to achieve the balance operation of the system and the centering of the silicon steel belt, and the temperature measurement is used to monitor whether the corresponding side winding tension is normal to prevent the roll from exploding and collapsing, and the system adjusts the pressure accordingly when the temperature is too high, and the principle of pressure adjustment balance is based on the following characteristics of the system: i.e. inner side pressurization, outer side pressure reduction, system moves outward, inner side pressure reduction, outer side pressure increase, system moves inward, the adjustment is based on the medium valve pressure, which is used to calculate the average tension, the larger the medium valve pressure, the larger the tension, the tighter the winding, and the outer valve pressure change is not sensitive to the inner valve pressure, which is easy to overheat, during winding, it is first judged whether it is a small roll diameter, the small roll diameter range is extracted from the system table value, and the small roll diameter range is extracted from the system table value, and the small roll diameter range is extracted from the system table value, and the small roll diameter range is extracted from the system table value, and the small roll diameter range is extracted from the system table value, and the small roll diameter range is extracted from the system table value, and the small roll diameter range is extracted from the system table value, and the small roll diameter range is extracted from the system table value, and the small roll diameter range is extracted from the system table value, and the small roll diameter range is extracted from the system table value, and 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production line operation, the radius increases, resulting in tension becomes larger, the interference of the radius change compensation, winding radius compensation tension control, using ultrasonic measurement of steel coil diameter and conversion to radius, by changing the running frequency change winding motor speed, that is, the change of winding roller speed, can compensate the influence of the radius change on the tension; That is, when the radius increases, the running frequency decreases accordingly, then the winding roller speed decreases; To control the winding motor frequency converter, before the winding roller on the steel strip tension detection, through the analog-digital conversion to digital quantity to the control system, in the control system and the given signal difference operation; The result is through the digital-analog conversion of the control system output to the frequency converter, drive winding motor, form a closed loop control.

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