Automatic speed raising control method and system for Carrousel coiler of cold continuous rolling unit

Abstract

The invention provides a cold continuous rolling unit Carrousel coiler automatic speed raising control method and system, and the method comprises the steps: collecting a mechanical equipment control action signal, carrying out the statistics of the movement time consumption of mechanical equipment, and finding a movement time consumption interval T of the mechanical equipment; calculating the consumed time t1 of the preset number of wrapper turns under the condition of the initial speed V0; calculating acceleration time T; the coiling speed V1 is calculated; under the condition that the coiling speed V1 is stable, whether the mechanical action meets the expectation or not is judged, and the coiling speed is optimized; and the unloading condition of the steel coil is monitored, the coiling speed is adjusted, and the steel coil at the coiling assisting position rotates to the coiling position. According to the invention, the problem that the automatic speed increase of the coiling machine is difficult after the auxiliary coiling of the Carrousel coiling machine is completed is solved, and the productivity of the cold continuous rolling unit is improved; artificial influence factors are eliminated, and standardization of production operation is guaranteed; the speed of the recoiling machine is adjusted in real time by judging the state of the coil unloading machine, the outlet of the rolling mill is kept at the maximum speed, and therefore the high-speed rolling time of a unit is longest.

Description

Technical Field

[0001] The invention belongs to the field of metallurgical automation, and in particular relates to an automatic speed-up control method and system for a carrousel coiler of a cold rolling mill. Background Art

[0002] At present, the speed-up process of the coiler of the cold rolling mill is controlled by manual operation of the operator. The different proficiency levels of the operators determine the speed-up time of the coiler, which results in the production capacity of the unit being affected by human factors and cannot be fully utilized.

[0003] The patent document "A coiling control method, device, medium and computer equipment" (CN114178317A) discloses that the coiling time can be reduced by increasing the execution frequency of equipment at key positions, so that the high-speed rolling time of the unit can be maximized to improve efficiency, but the coiling speed and acceleration are not taken into account. The coiling time t is also fixed, the coiling speed cannot be accurately calculated, and abnormal adjustment measures are not considered.

[0004] Therefore, it is necessary to study the process of automatic winding and automatic unwinding and develop an automatic speed increase control program for the winder, which can also reduce the labor intensity of the operator. Summary of the invention

[0005] In view of the defects in the prior art, the object of the present invention is to provide a method and system for automatically increasing the speed of a carrousel coiler of a cold rolling mill.

[0006] According to the present invention, a method for automatically increasing the speed of a cold rolling mill carrousel coiler is provided, comprising:

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

[0008] Step S2: Calculate the time t1 of the preset number of winding turns at the initial speed V0;

[0009] Step S3: Calculate the acceleration time T according to the mechanical equipment movement time interval △T and the time t1;

[0010] Step S4: Calculate the winding speed V1 according to the acceleration time T;

[0011] Step S5: when the winding speed V1 is stable, determine whether the mechanical action is in line with expectations and optimize the winding speed;

[0012] Step S6: monitor the unloading status of the steel coil, adjust the coiling speed, and rotate the steel coil at the auxiliary coiling position to the coiling position.

[0013] Preferably, the mechanical equipment control action signal in step S1 is a control action signal from the start of the threading and auxiliary coiling to the unloading trolley unloading the steel coil at the coiling position onto the trolley;

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

[0015] In step S6, the unloading time is calculated according to the unloading logic statistics, and the speed of the coiler is adjusted in real time according to the judgment of the unloading mechanical state;

[0016] The state of the coil unloading machine is determined as follows: when the exit saddle is busy, the speed of the coiler is adjusted to the maximum rolling speed V2 according to the remaining time for the coil unloading trolley to reach the coil receiving position.

[0017] Preferably, in step S2, t1=π*((R0+3δ) 2 -R0 2 ) / δ / V0;

[0018] Among them, the preset number of laps is set to 3 laps;

[0019] R0 represents the radius of the mandrel of the auxiliary rolling position;

[0020] δ represents the thickness of the steel coil.

[0021] In the step S3, the acceleration time T=ΔT-t1 is calculated by subtracting the time taken for the preset number of auxiliary winding turns at the speed V0 from the time taken for the mechanical equipment to move ΔT.

[0022] Preferably, the winding speed in step S4 is

[0023]

[0024] Among them, α represents acceleration;

[0025] T represents the acceleration time;

[0026] L represents the distance from the winding core at the auxiliary winding position to the winding core at the take-up position;

[0027] R2 represents the radius of the steel coil at the coiling position.

[0028] Preferably, in step S5, the maximum auxiliary coiling speed is statistically analyzed through historical coiler data, and whether the mechanical action meets expectations is determined in combination with the real-time coil diameter R1 at the auxiliary coiling position and the steel coil unloading process at the coiling position. When it is determined that an abnormal unloading failure occurs, the coiling speed is optimized to perform a quick stop operation so that the coil diameter does not exceed the auxiliary coiling limit coil diameter;

[0029] Among them, R1 represents the radius of the steel coil at the coiling position.

[0030] The mechanical action of the judgment is that if R1 is close to the limit winding diameter of the auxiliary winding and the unloading is completed, it is in line with expectations and step S6 is executed. If R1 is close to the limit winding diameter of the auxiliary winding and the unloading is not completed, the remaining time for unloading is recalculated and step S4 is executed.

[0031] According to the present invention, a cold rolling mill carousel coiler automatic speed increase control system specifically comprises:

[0032] Module M1: collects mechanical equipment control action signals, counts the mechanical equipment movement time, and finds the mechanical equipment movement time interval △T;

[0033] Module M2: Calculate the time t1 of the preset number of winding turns at the initial speed V0;

[0034] Module M3: Calculate the acceleration time T according to the time interval △T and time t1 of the mechanical equipment movement;

[0035] Module M4: Calculate the winding speed V1 according to the acceleration time T;

[0036] Module M5: When the winding speed V1 is stable, determine whether the mechanical action is in line with expectations and optimize the winding speed;

[0037] Module M6: monitors the unloading of steel coils, adjusts the coiling speed, and rotates the steel coils at the auxiliary coiling position to the coiling position.

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

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

[0040] The module M6 calculates the unloading time according to the unloading logic statistics, and adjusts the speed of the coiler in real time according to the judgment of the unloading mechanical state;

[0041] The state of the coil unloading machine is determined as follows: when the exit saddle is busy, the speed of the coiler is adjusted to the maximum rolling speed V2 according to the remaining time for the coil unloading trolley to reach the coil receiving position.

[0042] Preferably, in the module M2, t1=π*((R0+3δ) 2 -R0 2 ) / δ / V0;

[0043] Among them, the preset number of laps is set to 3 laps;

[0044] R0 represents the radius of the mandrel of the auxiliary rolling position;

[0045] δ represents the thickness of the steel coil.

[0046] The module M3 calculates the acceleration time T=△T-t1 after deducting the time taken for the preset number of auxiliary winding circles at the speed of V0 from the time taken for the mechanical equipment to move △T.

[0047] Preferably, the winding speed in the module M4 is

[0048]

[0049] Among them, α represents acceleration;

[0050] T represents the acceleration time;

[0051] L represents the distance from the winding core at the auxiliary winding position to the winding core at the take-up position;

[0052] R2 represents the radius of the steel coil at the coiling position.

[0053] Preferably, the module M5 statistically analyzes the maximum auxiliary coiling speed through historical coiler data, and determines whether the mechanical action meets expectations in combination with the real-time coil diameter R1 at the auxiliary coiling position and the steel coil unloading process at the coiling position. When it is determined that an abnormal unloading failure occurs, the coiling speed is optimized to perform a quick stop operation so that the coil diameter does not exceed the auxiliary coiling limit coil diameter;

[0054] Among them, R1 represents the radius of the steel coil at the coiling position.

[0055] The mechanical action of the determination is that if R1 is close to the limit winding diameter of the auxiliary winding and the unloading is completed, it is in line with expectations and the module M6 is triggered. If R1 is close to the limit winding diameter of the auxiliary winding and the unloading is not completed, the remaining time for unloading is recalculated and the module M4 is triggered.

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

[0057] 1. The present invention solves the problem that the Carrousel coiler is difficult to automatically increase its speed after the coiling is completed, thereby improving the production capacity of the cold rolling mill.

[0058] 2. The present invention eliminates human influence factors and ensures standardized production operations through automatic speed increase control of the carrousel coiler of the cold rolling mill.

[0059] 3. The present invention adjusts the speed of the coiler in real time by judging the state of the coil unloading machine, ensuring that the rolling mill outlet is maintained at the maximum speed, thereby extending the high-speed rolling time of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0061] Figure 1 This is a schematic diagram of the belt threading of the Carrousel coiler.

[0062] Figure 2 This is a schematic diagram of the Carrousel coiler.

[0063] Figure 3 This is a schematic diagram of the Carrousel winder unloading the coil at the take-up position after the belt is threaded and the rotation from the auxiliary coiling position to the take-up position is completed.

[0064] Figure 4 This is a schematic diagram of the speed increase curve of the Carrousel coiler from the auxiliary coiling position to the coiling position. DETAILED DESCRIPTION

[0065] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0066] The present invention automatically collects the action signals of the coiler mechanical equipment and the unloading signals of the coil unloading trolley, and uses big data statistical analysis technology to perform statistical analysis on the historical data of the action signals of the coiler mechanical equipment and the unloading signals of the coil unloading trolley, so as to obtain the range of unloading changes under normal circumstances, and control the coiling speed in combination with the action signals of the coiler mechanical equipment and the real-time coil diameter of the auxiliary coiling position.

[0067] According to the present invention, a method for automatically increasing the speed of a cold rolling mill carrousel coiler is provided, and the specific process is as follows:

[0068] Step S1: Figure 1 , Figure 2 For example, collect the mechanical equipment control action signals from the start of threading and coiling to the unloading trolley unloading the steel coil from the coiling position to the trolley;

[0069] The time consumed by the mechanical equipment from the start of the tape threading and coiling to the unloading trolley unloading the steel coil from the coiling position onto the trolley is counted, and the time consumption interval △T of the mechanical equipment movement is found through normal distribution.

[0070] Step S2: Figure 3 , Figure 4 Take the following as an example, and calculate the time t for the preset number of winding turns at the initial speed V0. 1：

[0071] t1=π*((R0+3δ) 2 -R0 2 ) / δ / V0;

[0072] Among them, R0 represents the radius of the winding mandrel, in mm;

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

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

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

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

[0077]

[0078] Where α represents acceleration, unit is m / s 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] R2 represents the radius of the steel coil at the coiling position, in mm.

[0082] The auxiliary winding time is obtained through the normal distribution analysis of historical data. The winding is accelerated and decelerated frequently. Considering the influence of acceleration and deceleration, the auxiliary winding speed V1 is calculated and adjusted in combination with the real-time winding diameter and unloading situation.

[0083] Step S5: While ensuring the stability of the coiling speed V1, determine whether the mechanical action is as expected by combining the real-time coil diameter R1 at the auxiliary coiling position and the coil unloading process at the coiling position. When an abnormality occurs in the unloading process, optimize the coiling speed.

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

[0085] The mechanical action of the determination is that if R1 is close to the limit winding diameter of the auxiliary winding and the winding is unloaded, it is in line with expectations, and step S6 is executed;

[0086] If R1 is close to the limit winding diameter of the auxiliary winding and the unwinding has not been completed, the remaining unwinding time is recalculated and step S4 is executed;

[0087] When it is determined that an abnormal coil unloading failure occurs, a quick stop operation is performed to ensure that the coil diameter does not exceed the auxiliary coiling limit diameter, 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 to the trolley, the coiling speed is adjusted to the maximum rolling speed V2, and the steel coil at the auxiliary coiling position is rotated to the coiling position.

[0089] Therefore, the unloading time is calculated according to the unloading logic statistics, and the speed of the coiler is adjusted in real time according to the status of the unloading machinery, so as to ensure that the rolling mill exit maintains the maximum speed.

[0090] The judgment is that if the exit saddle is busy, the maximum rolling speed V2 is adjusted according to the remaining time for the unloading trolley to reach the coil receiving position. The setting of this speed takes into account that the unloading machine is in a coiled state and cannot prepare for subsequent unloading operations, thereby ensuring the continuity of production.

[0091] The present invention finds the reasonable maximum auxiliary coiling speed through statistical learning and analysis of historical coiler data, so as to give full play to the rolling efficiency of the auxiliary coiling position; through the automatic speed increase control of the Carousel coiler of the cold rolling unit, the high-speed rolling time of the unit is guaranteed to be the longest, thereby effectively improving the unit's production capacity.

[0092] The present invention also provides an automatic speed increase control system for a carrousel coiler of a cold rolling mill. The automatic speed increase control system for the carrousel coiler of a cold rolling mill can be realized by executing the process steps of the automatic speed increase control method for the carrousel coiler of a cold rolling mill, that is, a person skilled in the art can understand the automatic speed increase control method for the carrousel coiler of a cold rolling mill as a preferred implementation mode of the automatic speed increase control system for the carrousel coiler of a cold rolling mill.

[0093] According to the present invention, a cold rolling mill carousel coiler automatic speed increase control system specifically comprises:

[0094] Module M1: collects mechanical equipment control action signals, counts the mechanical equipment movement time, and finds the mechanical equipment movement time interval △T;

[0095] Module M2: Calculate the time t1 of the preset number of winding turns at the initial speed V0;

[0096] Module M3: Calculate the acceleration time T according to the time interval △T and time t1 of the mechanical equipment movement;

[0097] Module M4: Calculate the winding speed V1 according to the acceleration time T;

[0098] Module M5: When the winding speed V1 is stable, determine whether the mechanical action is in line with expectations and optimize the winding speed;

[0099] Module M6: monitors the unloading of steel coils, adjusts the coiling speed, and rotates the steel coils at the auxiliary coiling position to the coiling position.

[0100] In more preferred examples, the mechanical equipment control action signal in the module M1 is a control action signal from the start of the threading and auxiliary winding to the unloading trolley unloading the steel coil at the winding position onto the trolley;

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

[0102] The module M6 calculates the unloading time according to the unloading logic statistics, and adjusts the speed of the coiler in real time according to the judgment of the unloading mechanical state;

[0103] The state of the coil unloading machine is determined as follows: when the exit saddle is busy, the speed of the coiler is adjusted to the maximum rolling speed V2 according to the remaining time for the coil unloading trolley to reach the coil receiving position.

[0104] In more preferred embodiments, in the module M2, t1=π*((R0+3δ) 2 -R0 2 ) / δ / V0;

[0105] Among them, the preset number of laps is set to 3 laps;

[0106] R0 represents the radius of the mandrel of the auxiliary rolling position;

[0107] δ represents the thickness of the steel coil.

[0108] The module M3 calculates the acceleration time T=△T-t1 after deducting the time taken for the preset number of auxiliary winding circles at the speed of V0 from the time taken for the mechanical equipment to move △T.

[0109] In more preferred embodiments, the winding speed in the module M4 is

[0110]

[0111] Among them, α represents acceleration;

[0112] T represents the acceleration time;

[0113] L represents the distance from the winding core at the auxiliary winding position to the winding core at the take-up position;

[0114] R2 represents the radius of the steel coil at the coiling position.

[0115] In more preferred examples, the module M5 statistically analyzes the maximum auxiliary coiling speed through historical coiler data, and determines whether the mechanical action meets expectations in combination with the real-time coil diameter R1 at the auxiliary coiling position and the steel coil unloading process at the coiling position. When it is determined that an abnormal unloading failure occurs, the coiling speed is optimized to perform a quick stop operation so that the coil diameter does not exceed the auxiliary coiling limit coil diameter.

[0116] Among them, R1 represents the radius of the steel coil at the coiling position.

[0117] The mechanical action of the determination is that if R1 is close to the limit winding diameter of the auxiliary winding and the unloading is completed, it is in line with expectations and the module M6 is triggered. If R1 is close to the limit winding diameter of the auxiliary winding and the unloading is not completed, the remaining time for unloading is recalculated and the module M4 is triggered.

[0118] Those skilled in the art know that, in addition to realizing the system and its various devices, modules, and units provided by the present invention in a purely computer-readable program code, it is entirely possible to realize the same functions in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers by logically programming the method steps. Therefore, the system and its various devices, modules, and units provided by the present invention can be considered as a hardware component, and the devices, modules, and units included therein for realizing various functions can also be regarded as structures within the hardware component; the devices, modules, and units for realizing various functions can also be regarded as both software modules for realizing the method and structures within the hardware component.

[0119] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A method for automatically increasing the speed of a cold rolling mill carrousel coiler, characterized in that: include: Step S1: Collect mechanical equipment control action signals, count the mechanical equipment movement time, and find the mechanical equipment movement time interval △T; Step S2: Calculate the time t1 of the preset number of winding turns at the initial speed V0; Step S3: Calculate the acceleration time T according to the mechanical equipment movement time interval △T and the time t1; Step S4: Calculate the winding speed V1 according to the acceleration time T; Step S5: when the winding speed V1 is stable, determine whether the mechanical action is in line with expectations and optimize the winding speed; Step S6: monitor the unloading status of the steel coil, adjust the coiling speed, and rotate the steel coil at the auxiliary coiling position to the coiling position.

2. The method for automatically increasing the speed of the cold rolling mill carrousel coiler according to claim 1, characterized in that: The mechanical equipment control action signal in step S1 is a control action signal from the start of the threading and auxiliary coiling to the unloading trolley unloading the steel coil at the coiling position onto the trolley; The time consumption of mechanical equipment movement is the time from the start of the belt threading and coiling to the unloading trolley unloading the steel coil from the coiling position onto the trolley. The time consumption interval △T of mechanical equipment movement is obtained by normal distribution analysis of historical data. In step S6, the unloading time is calculated according to the unloading logic statistics, and the speed of the coiler is adjusted in real time according to the judgment of the unloading mechanical state; The state of the coil unloading machine is determined as follows: when the exit saddle is busy, the speed of the coiler is adjusted to the maximum rolling speed V2 according to the remaining time for the coil unloading trolley to reach the coil receiving position.

3. The automatic speed increase control method of the cold rolling mill carrousel coiler according to claim 1, characterized in that: In step S2, t1=π*((R0+3δ) 2 -R0 2 ) / δ / V0; Among them, the preset number of laps is set to 3 laps; R0 represents the radius of the mandrel of the auxiliary rolling position; δ represents the thickness of the steel coil; In the step S3, the acceleration time T=ΔT-t1 is calculated by subtracting the time taken for the preset number of auxiliary winding turns at the speed V0 from the time taken for the mechanical equipment to move ΔT.

4. The method for automatically increasing the speed of the cold rolling mill carrousel coiler according to claim 1, characterized in that: The winding speed in step S4 Among them, α represents acceleration; T represents the acceleration time; L represents the distance from the winding core at the auxiliary winding position to the winding core at the take-up position; R2 represents the radius of the steel coil at the coiling position.

5. The automatic speed increase control method of the cold rolling mill carrousel coiler according to claim 1, characterized in that: In step S5, the maximum auxiliary coiling speed is analyzed by statistical analysis of historical coiler data, and the real-time coil diameter R1 at the auxiliary coiling position and the steel coil unloading process at the coiling position are combined to determine whether the mechanical action meets expectations. When it is determined that an abnormal unloading failure occurs, the coiling speed is optimized and a quick stop operation is performed to ensure that the coil diameter does not exceed the auxiliary coiling limit coil diameter. Among them, R1 represents the radius of the steel coil at the auxiliary coiling position; The mechanical action of the judgment is that if R1 is close to the limit winding diameter of the auxiliary winding and the unloading is completed, it is in line with expectations and step S6 is executed. If R1 is close to the limit winding diameter of the auxiliary winding and the unloading is not completed, the remaining time for unloading is recalculated and step S4 is executed.

6. An automatic speed-up control system for a cold rolling mill carrousel coiler, characterized in that: include: Module M1: collects mechanical equipment control action signals, counts the mechanical equipment movement time, and finds the mechanical equipment movement time interval △T; Module M2: Calculate the time t1 of the preset number of winding turns at the initial speed V0; Module M3: Calculate the acceleration time T according to the time interval △T and time t1 of the mechanical equipment movement; Module M4: Calculate the winding speed V1 according to the acceleration time T; Module M5: When the winding speed V1 is stable, determine whether the mechanical action is in line with expectations and optimize the winding speed; Module M6: monitors the unloading of steel coils, adjusts the coiling speed, and rotates the steel coils at the auxiliary coiling position to the coiling position.

7. The automatic speed increase control system for the cold rolling mill carrousel coiler according to claim 6, characterized in that: The mechanical equipment control action signal in the module M1 is a control action signal from the start of the threading and auxiliary coiling to the unloading trolley unloading the steel coil at the coiling position onto the trolley; The time consumption of mechanical equipment movement is the time from the start of the belt threading and coiling to the unloading trolley unloading the steel coil from the coiling position onto the trolley. The time consumption interval △T of mechanical equipment movement is obtained by normal distribution analysis of historical data. The module M6 calculates the unloading time according to the unloading logic statistics, and adjusts the speed of the coiler in real time according to the judgment of the unloading mechanical state; The state of the coil unloading machine is determined as follows: when the exit saddle is busy, the speed of the coiler is adjusted to the maximum rolling speed V2 according to the remaining time for the coil unloading trolley to reach the coil receiving position.

8. The automatic speed increasing control system for the cold rolling mill carrousel coiler according to claim 6, characterized in that: In the module M2, t1 = π*((R0+3δ) 2 -R0 2 ) / δ / V0; Among them, the preset number of laps is set to 3 laps; R0 represents the radius of the mandrel of the auxiliary rolling position; δ represents the thickness of the steel coil; The module M3 calculates the acceleration time T=ΔT-t1 after deducting the time taken for the preset number of auxiliary winding circles at the speed of V0 from the time interval ΔT taken for the mechanical equipment to move.

9. The automatic speed increasing control system of the cold rolling mill carrousel coiler according to claim 6, characterized in that: The winding speed in module M4 Among them, α represents acceleration; T represents the acceleration time; L represents the distance from the winding core at the auxiliary winding position to the winding core at the take-up position; R2 represents the radius of the steel coil at the coiling position.

10. The automatic speed increasing control system for the cold rolling mill carrousel coiler according to claim 6, characterized in that: In the module M5, the maximum auxiliary coiling speed is analyzed by historical coiler data statistics, and the real-time coil diameter R1 at the auxiliary coiling position and the steel coil unloading process at the coiling position are combined to determine whether the mechanical action meets expectations. When it is determined that an abnormal unloading failure occurs, the coiling speed is optimized to perform a quick stop operation so that the coil diameter does not exceed the auxiliary coiling limit coil diameter; Among them, R1 represents the radius of the steel coil at the auxiliary coiling position; The mechanical action of the determination is that if R1 is close to the limit winding diameter of the auxiliary winding and the unloading is completed, it is in line with expectations and the module M6 is triggered. If R1 is close to the limit winding diameter of the auxiliary winding and the unloading is not completed, the remaining time for unloading is recalculated and the module M4 is triggered.

Images