Automatic speed increasing control method and system for cold continuous rolling mill set carousel coiler

Abstract

The application provides a kind of cold continuous rolling mill group carousel coiler automatic speed control method and system, comprising: collecting mechanical equipment control action signal, statistics mechanical equipment movement time consumption, find mechanical equipment movement time consumption interval ΔT;Calculate the preset number of laps of the initial speed V0 under the condition of assisting winding t1;Calculate the acceleration time T;Calculate the winding speed V1;In the case where the winding speed V1 is stable, determine whether the mechanical action meets the expectation, optimize the winding speed;Monitor the unloading condition of the coil, adjust the winding speed, and rotate the coil in the winding position. The application solves the problem of automatic speed increase of the coiler after the completion of the carousel coiler winding, improves the productivity of the cold continuous rolling mill group; eliminates the influence of artificial factors and ensures the standardization of production operation; by judging the unloading mechanical state, the speed of the coiler is adjusted in real time, the rolling mill outlet is kept at the maximum speed, so that the high-speed rolling time of the unit is the longest.

Description

Technical Field

[0001] This invention belongs to the field of metallurgical automation, specifically relating to an automatic speed-up control method and system for a Carrousel coiler in a cold rolling mill. Background Technology

[0002] Currently, the speed-up process of the coiler in a cold rolling mill is controlled manually by the operators. The varying levels of operator skill result in different speed-up times for the coiler, which in turn affects the unit's production capacity due to human factors and prevents it from being fully utilized.

[0003] The patent document "A winding control method, device, medium and computer equipment" (CN114178317A) discloses that by increasing the execution frequency of the equipment at key positions, the winding time can be reduced, thereby maximizing the high-speed rolling time of the unit and improving efficiency. However, it does not consider the winding speed and acceleration, and the winding time t is also fixed, making it impossible to accurately calculate the winding speed. It also does not consider abnormal adjustment methods.

[0004] Therefore, it is necessary to study the automatic winding and unwinding process and develop an automatic speed-up control program for the winding machine, which can also reduce the labor intensity of operators. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide an automatic speed-up control method and system for the Carrousel coiler in a cold rolling mill.

[0006] An automatic speed-up control method for a Carrousel coiler in a cold rolling mill, provided by the present invention, includes:

[0007] Step S1: Collect the control action signals of the mechanical equipment, count the motion time of the mechanical equipment, and find the motion time interval △T of the mechanical equipment;

[0008] Step S2: Calculate the time t1 for the preset number of rolls to assist the winding under the initial speed V0;

[0009] Step S3: Calculate the acceleration time T based on the mechanical equipment's motion time interval ΔT and the time t1;

[0010] Step S4: Calculate the winding speed based on the acceleration time T. ;

[0011] Step S5: At the winding speed Under stable conditions, determine whether the mechanical actions meet expectations and optimize the winding speed accordingly;

[0012] Step S6: Monitor the unloading of the steel coil, adjust the winding speed, and help the steel coil at the winding position rotate to the winding position.

[0013] Preferably, the mechanical equipment control action signal in step S1 is the control action signal from the start of the threading aid to the unloading trolley unloading the steel coil from the coil position onto the trolley.

[0014] The mechanical equipment movement time is the time from the start of the threading aid to the unloading trolley unloading the steel coil from the coiling position onto the trolley. The mechanical equipment movement time interval △T is obtained through normal distribution analysis of historical data.

[0015] In step S6, the unloading status of the steel coil at the coiling position is monitored in real time. When the steel coil is successfully unloaded onto the trolley, the coiling speed is adjusted to the maximum rolling speed V2.

[0016] The unwinding time is calculated statistically based on the unwinding logic, and the speed of the winding machine is adjusted in real time based on the judgment of the unwinding machine status.

[0017] The determination of the unwinding machine status is as follows: when the exit saddle is busy, the maximum rolling speed V2 of the coiler is adjusted according to the remaining time for the unwinding trolley to reach the receiving position.

[0018] Preferably, in step S2 ;

[0019] The preset number of laps is set to 3.

[0020] R0 represents the radius of the mandrel at the auxiliary winding position;

[0021] δ represents the thickness of the steel coil.

[0022] In step S3, the acceleration time T = △T-t1 is calculated after subtracting the time taken for the preset number of rotations of the auxiliary winding under the speed of V0 from the time interval △T of the mechanical equipment movement.

[0023] Preferably, the winding speed in step S4 is... ;

[0024] Where α represents acceleration;

[0025] T represents the acceleration time;

[0026] L represents the distance from the center of the take-up position to the center of the roll-up position;

[0027] This indicates the radius of the steel coil at the winding position.

[0028] Preferably, in step S5, when the winding speed V1 is stable, the mechanical action is determined to be in line with expectations by combining the real-time coil diameter R1 at the assisted winding position and the unloading process of the steel coil at the winding position. When an abnormality occurs in the unloading process, the winding speed is optimized.

[0029] The determination mechanism is as follows: if R1 is close to the maximum roll diameter and unwinding is completed, then it meets the expectation and step S6 is executed; if R1 is close to the maximum roll diameter but unwinding is not yet completed, then the remaining unwinding time is recalculated and step S4 is executed.

[0030] When an abnormal uncoiling failure is detected, a quick stop operation is performed to ensure that the steel coil diameter does not exceed the auxiliary coil diameter limit.

[0031] An automatic speed-up control system for a Carrousel coiler in a cold rolling mill, provided by the present invention, specifically includes:

[0032] Module M1: Collects control action signals of mechanical equipment, calculates the motion time of mechanical equipment, and finds the motion time interval △T of mechanical equipment;

[0033] Module M2: Calculates the time t1 for the preset number of rolls given an initial speed V0;

[0034] Module M3: Calculates the acceleration time T based on the mechanical equipment's motion time interval ΔT and the time t1.

[0035] Module M4: Calculates the roll-up speed based on the acceleration time T. ;

[0036] Module M5: In terms of roll-up speed Under stable conditions, determine whether the mechanical actions meet expectations and optimize the winding speed accordingly;

[0037] Module M6: Monitors the unloading of steel coils, adjusts the winding speed, and assists in rotating the steel coil from the coiling position to the winding position.

[0038] Preferably, the mechanical equipment control action signal in module M1 is the control action signal from the start of the threading aid to the unloading trolley unloading the steel coil from the coil position onto the trolley;

[0039] The mechanical equipment movement time is the time from the start of the threading aid to the unloading trolley unloading the steel coil from the coiling position onto the trolley. The mechanical equipment movement time interval △T is obtained through normal distribution analysis of historical data.

[0040] The module M6 monitors the unloading of the steel coil at the winding position in real time. When the steel coil is successfully unloaded onto the trolley, the winding speed is adjusted to the maximum rolling speed V2.

[0041] The unwinding time is calculated statistically based on the unwinding logic, and the speed of the winding machine is adjusted in real time based on the judgment of the unwinding machine status.

[0042] The determination of the unwinding machine status is as follows: when the exit saddle is busy, the maximum rolling speed V2 of the coiler is adjusted according to the remaining time for the unwinding trolley to reach the receiving position.

[0043] Preferably, in module M2 ;

[0044] The preset number of laps is set to 3.

[0045] R0 represents the radius of the mandrel at the auxiliary winding position;

[0046] δ represents the thickness of the steel coil.

[0047] In module M3, the acceleration time T = △T-t1 is calculated after subtracting the time taken for the preset number of rotations of the auxiliary winding under the speed of V0 from the time interval △T of the mechanical equipment's motion.

[0048] Preferably, the winding speed in module M4 is... ;

[0049] Where α represents acceleration;

[0050] T represents the acceleration time;

[0051] L represents the distance from the center of the take-up position to the center of the roll-up position;

[0052] This indicates the radius of the steel coil at the winding position.

[0053] Preferably, in module M5, when the winding speed V1 is stable, the mechanical action is determined to be in line with expectations by combining the real-time winding diameter R1 at the auxiliary winding position and the unloading process of the steel coil at the winding position. When an abnormality occurs in the unloading process, the winding speed is optimized.

[0054] The determination mechanism is as follows: if R1 approaches the maximum roll diameter and unwinding is completed, it meets the expectation and triggers module M6; if R1 approaches the maximum roll diameter but unwinding is not yet completed, the remaining unwinding time is recalculated and module M4 is triggered.

[0055] When an abnormal uncoiling failure is detected, a quick stop operation is performed to ensure that the steel coil diameter does not exceed the auxiliary coil diameter limit.

[0056] Compared with the prior art, the present invention has the following beneficial effects:

[0057] 1. This invention solves the problem of difficulty in automatically increasing the speed of the coiler after the assisted coiling of the Carrousel coiler is completed, thereby improving the production capacity of the cold continuous rolling mill.

[0058] 2. This invention uses automatic speed control of the Carrousel coiler in the cold rolling mill to eliminate human influence and ensure standardized production operations.

[0059] 3. This invention adjusts the speed of the coiler in real time by judging the status of the uncoiling machinery, ensuring that the mill exit speed is maintained at the maximum speed, thereby maximizing the high-speed rolling time of the unit. Attached Figure Description

[0060] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0061] Figure 1 This is a schematic diagram of the Carrousel winding machine threading.

[0062] Figure 2 This is a schematic diagram of a Carrousel winding machine.

[0063] Figure 3 This diagram illustrates the rotation from the auxiliary winding position to the winding position after unwinding at the winding position of the Carrousel winding machine following the tape threading process.

[0064] Figure 4 This is a schematic diagram of the speed-up curve of a Carrousel winding machine from the assisted winding position to the winding position. Detailed Implementation

[0065] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0066] This invention automatically collects the action signals of the winding machine and the unloading signals of the unloading trolley. Using big data statistical analysis technology, it performs statistical analysis on the historical data of the action signals of the winding machine and the unloading signals of the unloading trolley to obtain the range of unloading changes under normal conditions. Combined with the action signals of the winding machine and the real-time roll diameter at the winding aid position, the winding speed is controlled.

[0067] An automatic speed-up control method for a Carrousel coiler in a cold rolling mill, provided by the present invention, is as follows:

[0068] Step S1: with Figure 1 , Figure 2 For example, the mechanical control signals are collected from the start of the threading and winding process to the unloading trolley unloading the steel coil from its position onto the trolley.

[0069] The time taken for mechanical equipment to move from the start of the winding process to the unloading trolley unloading the coil from its position onto the trolley was statistically analyzed, and the time interval ΔT of the mechanical equipment movement was found by using a normal distribution.

[0070] Step S2: with Figure 3 , Figure 4 For example, the time t taken to calculate the preset number of rolls for the auxiliary roll under the initial velocity V0. 1：

[0071] ;

[0072] Where R0 represents the radius of the mandrel at the auxiliary winding position, in mm;

[0073] δ represents the thickness of the steel coil, in mm;

[0074] The preset number of laps is set to 3.

[0075] Step S3: Calculate the acceleration time T = △T - t1 after subtracting the time taken for the preset number of rotations of the auxiliary winding under the speed of V0 from the time interval △T of the mechanical equipment movement.

[0076] Step S4: with Figure 4 For example, calculate the winding speed V1:

[0077] ;

[0078] Where α represents acceleration, in m / s². 2 ;

[0079] T represents the acceleration time;

[0080] L represents the distance from the winding core at the auxiliary winding position to the winding core at the take-up position, in mm;

[0081] Indicates the radius of the steel coil at the winding position, in mm.

[0082] The winding assist time is derived from the normal distribution analysis of historical data. Since the winding process involves frequent acceleration and deceleration, the winding assist speed V1 is calculated and adjusted in conjunction with the real-time winding diameter and unwinding conditions, taking into account the impact of acceleration and deceleration.

[0083] Step S5: While ensuring the winding speed V1 is stable, determine whether the mechanical action meets expectations by combining the real-time coil diameter R1 at the assisted winding position and the unloading process of the steel coil at the winding position. Optimize the winding speed when an abnormality occurs during the unloading process.

[0084] R1 represents the radius of the steel coil at the assisted coiling position, in mm.

[0085] The determination mechanism is as follows: if R1 is close to the maximum roll diameter and unwinding is completed, then it meets the expectation and step S6 is executed.

[0086] If R1 is close to the maximum roll diameter and unwinding is not yet complete, recalculate the remaining unwinding time and execute step S4.

[0087] When an abnormal uncoiling failure is detected, a quick stop operation is performed to ensure that the steel coil diameter does not exceed the auxiliary coil diameter limit, thereby ensuring production safety.

[0088] Step S6: Monitor the unloading status of the steel coil at the coiling position in real time. When the steel coil is successfully unloaded onto the trolley, adjust the coiling speed to the maximum rolling speed V2, and rotate the steel coil at the auxiliary coiling position to the coiling position.

[0089] Therefore, the unwinding time is calculated according to the unwinding logic, and the speed of the coiler is adjusted in real time based on the judgment of the unwinding machinery status, so as to ensure that the mill exit speed is maintained at the maximum speed.

[0090] The judgment is that if the exit saddle is busy, the maximum rolling speed V2 of the coiler is adjusted according to the remaining time when the unloading trolley arrives at the receiving position. This speed setting takes into account that the unloading machine is in a coiled state and cannot prepare for subsequent unloading operations, so as to ensure the continuity of production.

[0091] This invention uses historical coiler data statistical learning and analysis to find the reasonable maximum assist speed, fully utilizing the rolling efficiency of the assist position; and through automatic speed increase control of the Carrousel coiler in the cold continuous rolling mill, it ensures the longest high-speed rolling time of the unit, thereby effectively improving the unit's production capacity.

[0092] The present invention also provides an automatic speed-up control system for a Carousel coiler in a cold rolling mill. The automatic speed-up control system for a Carousel coiler in a cold rolling mill can be implemented by executing the process steps of the automatic speed-up control method for a Carousel coiler in a cold rolling mill. That is, those skilled in the art can understand the automatic speed-up control method for a Carousel coiler in a cold rolling mill as a preferred embodiment of the automatic speed-up control system for a Carousel coiler in a cold rolling mill.

[0093] An automatic speed-up control system for a Carrousel coiler in a cold rolling mill, provided by the present invention, specifically includes:

[0094] Module M1: Collects control action signals of mechanical equipment, calculates the motion time of mechanical equipment, and finds the motion time interval △T of mechanical equipment;

[0095] Module M2: Calculates the time t1 for the preset number of rolls given an initial speed V0;

[0096] Module M3: Calculates the acceleration time T based on the mechanical equipment's motion time interval ΔT and the time t1.

[0097] Module M4: Calculates the roll-up speed based on the acceleration time T. ;

[0098] Module M5: In terms of roll-up speed Under stable conditions, determine whether the mechanical actions meet expectations and optimize the winding speed accordingly;

[0099] Module M6: Monitors the unloading of steel coils, adjusts the winding speed, and assists in rotating the steel coil from the coiling position to the winding position.

[0100] In more preferred embodiments, the mechanical equipment control action signal in module M1 is the control action signal from the start of the threading aid to the unloading trolley unloading the coiled steel coil onto the trolley.

[0101] The mechanical equipment movement time is the time from the start of the threading aid to the unloading trolley unloading the steel coil from the coiling position onto the trolley. The mechanical equipment movement time interval △T is obtained through normal distribution analysis of historical data.

[0102] In module M6, the unloading status of the steel coil at the winding position is monitored in real time. When the steel coil is successfully unloaded onto the trolley, the winding speed is adjusted to the maximum rolling speed V2.

[0103] The unwinding time is calculated statistically based on the unwinding logic, and the speed of the winding machine is adjusted in real time based on the judgment of the unwinding machine status.

[0104] The determination of the unwinding machine status is as follows: when the exit saddle is busy, the maximum rolling speed V2 of the coiler is adjusted according to the remaining time for the unwinding trolley to reach the receiving position.

[0105] In more preferred embodiments, in module M2 ;

[0106] The preset number of laps is set to 3.

[0107] R0 represents the radius of the mandrel at the auxiliary winding position;

[0108] δ represents the thickness of the steel coil.

[0109] In module M3, the acceleration time T = △T-t1 is calculated after subtracting the time taken for the preset number of rotations of the auxiliary winding under the speed of V0 from the time interval △T of the mechanical equipment's motion.

[0110] In more preferred embodiments, the winding speed in module M4 ;

[0111] Where α represents acceleration;

[0112] T represents the acceleration time;

[0113] L represents the distance from the center of the take-up position to the center of the roll-up position;

[0114] This indicates the radius of the steel coil at the winding position.

[0115] In more preferred embodiments, when the winding speed V1 is stable, module M5 determines whether the mechanical action meets expectations by combining the real-time coil diameter R1 at the auxiliary winding position and the unloading process of the steel coil at the winding position. When an abnormality occurs in the unloading process, the winding speed is optimized.

[0116] The determination mechanism is as follows: if R1 approaches the maximum roll diameter and unwinding is completed, it meets the expectation and triggers module M6; if R1 approaches the maximum roll diameter but unwinding is not yet completed, the remaining unwinding time is recalculated and module M4 is triggered.

[0117] When an abnormal uncoiling failure is detected, a quick stop operation is performed to ensure that the steel coil diameter does not exceed the auxiliary coil diameter limit.

[0118] Those skilled in the art will understand that, besides implementing the system and its various devices, modules, and units provided by this invention in the form of purely computer-readable program code, the same functions can be achieved entirely through logical programming of the method steps, making the system and its various devices, modules, and units of this invention function in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers. Therefore, the system and its various devices, modules, and units provided by this invention can be considered as a hardware component, and the devices, modules, and units included therein for implementing various functions can also be considered as structures within the hardware component; alternatively, the devices, modules, and units for implementing various functions can be considered as both software modules implementing the method and structures within the hardware component.

[0119] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. An automatic speed-up control method for a Carrousel coiler in a cold rolling mill, characterized in that, include: Step S1: Collect the control action signals from the start of the mechanical equipment threading and winding to the unloading trolley unloading the coiled steel coil onto the trolley, count the movement time of the mechanical equipment, and find the movement time interval △T of the mechanical equipment; Step S2: Calculate the time t1 for the preset number of rolls to assist the winding under the initial speed V0; Step S3: Calculate the acceleration time T based on the mechanical equipment's motion time interval ΔT and the time t1; Step S4: Calculate the winding speed based on the acceleration time T. ; Step S5: At the winding speed Under stable conditions, determine whether the mechanical actions meet expectations and optimize the winding speed accordingly; Step S6: Monitor the unloading of the steel coil, adjust the winding speed, and help the steel coil at the winding position rotate to the winding position; In step S2 ; The preset number of laps is set to 3. R0 represents the radius of the mandrel at the auxiliary winding position; δ represents the thickness of the steel coil; In step S3, the acceleration time T = △T - t1 is calculated after subtracting the time taken for the preset number of rotations of the assist winding under the speed of V0 from the time interval △T of the mechanical equipment movement. The winding speed in step S4 ; Where α represents acceleration; T represents the acceleration time; L represents the distance from the center of the take-up position to the center of the roll-up position; This indicates the radius of the steel coil at the winding position.

2. The automatic speed-up control method for the Carrousel coiler of a cold rolling mill according to claim 1, characterized in that, In step S1, the mechanical equipment movement time is the time from the start of the threading aid to the unloading trolley unloading the coiled steel coil onto the trolley. The mechanical equipment movement time interval ΔT is obtained by analyzing the normal distribution of historical data. In step S6, the unloading status of the steel coil at the coiling position is monitored in real time. When the steel coil is successfully unloaded onto the trolley, the coiling speed is adjusted to the maximum rolling speed V2. The unwinding time is calculated statistically based on the unwinding logic, and the speed of the winding machine is adjusted in real time based on the judgment of the unwinding machine status. The determination of the unwinding machine status is as follows: when the exit saddle is busy, the maximum rolling speed V2 of the coiler is adjusted according to the remaining time for the unwinding trolley to reach the receiving position.

3. The automatic speed-up control method for the Carrousel coiler of a cold rolling mill according to claim 1, characterized in that, In step S5, when the winding speed V1 is stable, the mechanical action is determined to be in line with expectations by combining the real-time winding diameter R1 at the auxiliary winding position and the unloading process of the steel coil at the winding position. When an abnormality occurs in the unloading process, the winding speed is optimized. The determination mechanism is as follows: if R1 is close to the maximum roll diameter and unwinding is completed, then it meets the expectation and step S6 is executed; if R1 is close to the maximum roll diameter but unwinding is not yet completed, then the remaining unwinding time is recalculated and step S4 is executed. When an abnormal uncoiling failure is detected, a quick stop operation is performed to ensure that the steel coil diameter does not exceed the auxiliary coil diameter limit.

4. An automatic speed-up control system for a Carrousel coiler in a cold continuous rolling mill, characterized in that, include: Module M1: Collects control action signals from the start of the mechanical equipment threading and winding to the unloading trolley unloading the coiled steel coil onto the trolley, counts the movement time of the mechanical equipment, and finds the movement time interval △T of the mechanical equipment; Module M2: Calculates the time t1 for the preset number of rolls given an initial speed V0; Module M3: Calculates the acceleration time T based on the mechanical equipment's motion time interval ΔT and the time t1. Module M4: Calculates the roll-up speed based on the acceleration time T. ; Module M5: In terms of roll-up speed Under stable conditions, determine whether the mechanical actions meet expectations and optimize the winding speed accordingly; Module M6: Monitors the unloading of steel coils, adjusts the winding speed, and assists the steel coil at the winding position to rotate to the winding position; In module M2 ; The preset number of laps is set to 3. R0 represents the radius of the mandrel at the auxiliary winding position; δ represents the thickness of the steel coil; In module M3, the acceleration time T = △T - t1 is calculated after subtracting the time taken for the preset number of rotations of the auxiliary winding under the speed of V0 from the time interval △T of the mechanical equipment's motion. The winding speed in module M4 ; Where α represents acceleration; T represents the acceleration time; L represents the distance from the center of the take-up position to the center of the roll-up position; This indicates the radius of the steel coil at the winding position.

5. The automatic speed-up control system for the Carrousel coiler of a cold rolling mill according to claim 4, characterized in that, In module M1, the mechanical equipment movement time is the time from the start of the threading aid to the unloading trolley unloading the coiled steel coil onto the trolley. The mechanical equipment movement time interval ΔT is obtained by analyzing the normal distribution of historical data. In module M6, the unloading status of the steel coil at the winding position is monitored in real time. When the steel coil is successfully unloaded onto the trolley, the winding speed is adjusted to the maximum rolling speed V2. The unwinding time is calculated statistically based on the unwinding logic, and the speed of the winding machine is adjusted in real time based on the judgment of the unwinding machine status. The determination of the unwinding machine status is as follows: when the exit saddle is busy, the maximum rolling speed V2 of the coiler is adjusted according to the remaining time for the unwinding trolley to reach the receiving position.

6. The automatic speed-up control system for the Carrousel coiler of a cold rolling mill according to claim 4, characterized in that, In module M5, when the winding speed V1 is stable, the mechanical action is determined to be in line with expectations by combining the real-time winding diameter R1 at the auxiliary winding position and the unloading process of the steel coil at the winding position. When an abnormality occurs in the unloading process, the winding speed is optimized. The determination mechanism is as follows: if R1 approaches the maximum roll diameter and unwinding is completed, it meets the expectation and triggers module M6; if R1 approaches the maximum roll diameter but unwinding is not yet completed, the remaining unwinding time is recalculated and module M4 is triggered. When an abnormal uncoiling failure is detected, a quick stop operation is performed to ensure that the steel coil diameter does not exceed the auxiliary coil diameter limit.

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