A method for controlling a single lane coiling

Abstract

The present application relates to a kind of single-channel coiling control method, the method comprises the following steps: step 1, in the outlet picture, double channel is switched to single channel, and the coiler of threading is selected, step 2, according to the principle that product process speed and sleeve height cannot be too high, set the central section process speed, utilize outlet sleeve sleeve during meeting outlet single channel uncoiling, coiling, step 3, set the coiler head threading stop position after outlet cutting is completed, step 4, when the threading condition is met after coiler uncoiling is completed, outlet section carries out threading coiling according to threading button, when coiler assist roll is opened and meets operating condition, outlet section is upgraded and is pulled sleeve according to operating button.The method of the present application realizes that production line can continue to run before the fault coiler is repaired, and can guarantee that process product meets customer requirements.

Description

Technical Field

[0001] This invention relates to a control method, specifically a control method for single-channel winding, belonging to the field of equipment automation control technology. Background Technology

[0002] A coiler is a mechanical device that coils hot-rolled or cold-rolled steel into coils, facilitating overhead crane transport of the coils to designated locations for storage, transportation, and subsequent processing. It is primarily used in the metallurgical, printing, packaging, plastics processing, and textile industries. In steel production, coilers are indispensable auxiliary equipment, playing a crucial role in improving production efficiency and product quality. To enhance production efficiency and product quality and meet the requirements of continuous and automated production, the production unit employs two independent coiling channels. Once one coil of steel is coiled, it can be quickly switched to another, ensuring continuous production and reducing coil changeover and waiting time. Currently, there are many types of coilers, which typically operate in complex and variable industrial environments, needing to withstand frequent acceleration and deceleration, strip tension changes, and mechanical vibrations. Prolonged high-load operation can easily lead to malfunctions in the main body and accessories of the equipment. When one coiler in a dual-channel coiler experiences a fault alarm or abnormal situation during operation, its operation is affected, and it cannot meet the established production requirements. To prevent the malfunction of a single piece of equipment from spreading further, the faulty winding machine needs to be shut down for a short period of time for repair. However, this shutdown for repair results in the inability to complete planned production tasks, wasted energy input, excessive environmental emissions, and increased losses due to production interruptions. Therefore, a new solution to this technical problem is urgently needed. Summary of the Invention

[0003] This invention addresses the technical problems existing in the prior art by providing a control method for single-channel winding, mainly solving the technical problem that the existing cold rolling dual-channel winding machine cannot maintain continuous and stable operation of the unit when one winding machine fails.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows: a single-channel winding control method, the single-channel winding control method comprising the following steps:

[0005] Step 1: On the exit screen, switch from dual-channel to single-channel and select the tape winding machine.

[0006] Step 2: Based on the principle that the product process speed and the filling height should not be too high, set the process speed for the central section, and utilize the single-channel unwinding and winding during the filling period of the exit looper.

[0007] Step 3: Set the stop position for the winding machine head to stop threading after the exit shearing is completed.

[0008] Step 4: After the winding machine finishes unloading, when the threading conditions are met, press the threading button at the exit section to thread and wind the tape. When the winding machine's auxiliary winding opens and the operating conditions are met, press the run button at the exit section to increase the speed and pull the sleeve.

[0009] In step 2, the process speed of the central section is set to ensure that the single-channel winding and unwinding of the exit looper are met during the filling period, while avoiding excessive filling of the exit looper which could cause strip deviation. The exit looper height is set to a filling amount of no more than 55% for the double looper. Simultaneously, the process speed of the central section is set to v3 based on the speed range required by the product's process temperature. When the weld seam is 13 meters away from the leveling machine, the exit section begins to slow down until the weld seam enters the leveling machine, at which point the speed drops to v2. After the weld seam is sheared by the flying shear, the trailing strip continues to move forward for winding, positioning, and unwinding. The trailing strip head stops running after passing the L-meter guide roller in front of the No. 1 coiler, at which point the speed drops to 0. After the coiler stops positioning, unwinding continues. After unwinding is completed, the coiling assistance is started once the conditions are met. After the winding is completed and the threading conditions are met, manually press the threading button to thread the tape. The exit section speed increases from 0 to threading speed v1. After threading is completed and the exit operating conditions are met, press the RUN button to increase the speed. At this time, the exit section speed increases from v1 to v5. When the exit looper is pulled to a certain distance from the minimum looper amount for the first time, the exit section speed decreases to v4 to pull the looper (to avoid failure caused by the looper pulling below the minimum set value in one pull). When the exit looper is pulled down to a certain distance from the minimum looper amount for the second time, the exit section speed decreases to the process speed v3. The exit section speed curve is shown below. Figure 1 As shown.

[0010] The formula for calculating the set speed of the process section is as follows:

[0011] Based on the minimum set value of the exit section looper, the exit section speed is kept synchronized with the central section speed. When the weld is a certain distance from the leveling machine, the time required for the exit section to decelerate from process speed v3 to 70mpm is:

[0012]

[0013] The distance from the point where the strip speed decreases to 70 mp at the exit section to the set stopping position is 74 m. Calculate the distance and time it takes for the strip speed to decrease from 70 mp to 0 mp.

[0014]

[0015] Calculate the time it takes for the strip to travel at a speed of 70 mpm.

[0016]

[0017] The stop time of the single-channel take-up exit section is

[0018] t4 = 80s,

[0019] Stop time at the exit section

[0020] The time taken for the exit section to go from a speed of 0 mpm to a crawl speed of 30 mpm is

[0021]

[0022] The exit section operates at a crawling speed of 30 mpm for a time of

[0023] t6 = 40s

[0024] The time taken for the outlet section to travel from a creep speed of 30mpm to the set process speed v3 is

[0025]

[0026] According to the process speed, after the exit section is pulled into the loop, the exit section speed drops to the central section process speed v3. During this period, the exit section decelerates from process speed v3 to zero, then resumes threading, and finally accelerates back to the central section process speed v3. The length of the strip fed into the exit loop during this time is...

[0027] l4=v3×(t1+t2+t3+t4+t5+t6+t7)

[0028] To ensure the product process speed meets temperature requirements while preventing excessive filler weight at the exit looper that could cause strip misalignment, the filler weight at the single-channel winding exit looper is set to no higher than α%. Based on the maximum storage capacity L of the exit looper, the filler weight is calculated as L × α%. To prevent damage to the equipment caused by emptying the exit looper during pulling, the minimum filler weight at the exit looper is set to β%.

[0029] The filling sleeve length is calculated as follows:

[0030] Single-sleeve filling length l = L × α% - L × β%

[0031] Since the export looper is a double looper, the total length of the export looper is L4 = 2l.

[0032] Where: v1 – Belt threading speed of the exit winding machine

[0033] v2 - Speed ​​of weld seam smoothing machine and flying shear

[0034] v3 - Central Section Process Setting Speed

[0035] v4 - Second pull speed of the export looper

[0036] v5 - First pull speed of the export looper

[0037] a1 – Deceleration when the speed at the exit section drops from v3 to v2

[0038] a2 – Deceleration when the exit section velocity v2 drops to 0

[0039] a3 – Acceleration from exit speed increase to winding machine belt threading

[0040] a4 – The acceleration from the threading speed to the first pull speed of the exit loop.

[0041] In step 3, before the weld reaches the leveling machine, the exit looper has been pulled to the set minimum value. The speed is reduced to the speed of the weld passing through the leveling machine and the flying shear by the master speed controller. When the material tracking system sends a signal that the weld has reached a certain distance L1 from the flying shear at the exit section, the PLC system receives the signal and starts the auxiliary equipment. After the clamping roller in front of the flying shear is closed, the lower magnetic belts in front and behind the flying shear are closed. After the flying shear auxiliary equipment is ready, the signal returns to the material tracking system to send a flying shear ready signal. When the weld continues to run to a certain distance L2 from the flying shear, the material tracking system sends a shearing command, the flying shear starts and completes the shearing action. At the same time, the magnetic belt on the flying shear is energized, and the sheared head is attracted to the upper magnetic belt and moves forward with the belt.

[0042] In step 4, if winding with coiler No. 1, the belt head moves forward past the front guide roller of coiler No. 1, and the guide roller pressure roller closes. If winding with coiler No. 2, the belt head moves forward past the front guide roller of coiler No. 2, and the front guide roller pressure roller of coiler No. 2 closes, while the front guide roller pressure roller of coiler No. 1 opens. If the belt head stops on the guide plate between coilers No. 1 and No. 2 and has not passed the front guide roller of coiler No. 2, the front guide roller pressure roller and pinch roller of coiler No. 1 close, while the front guide roller pressure roller of coiler No. 2 remains open. The belt head stops after passing the photoelectric detector L meters away from coiler No. 1 (detected by the photoelectric detector and encoder). The magnetic belt magnetization time... The system automatically shuts off upon reaching the set time. To ensure the subsequent coiler can quickly and accurately begin winding when the leading edge of the strip reaches its designated stopping position, the stopping position for the No. 1 coiler is set to 11 meters past the photoelectric detector of the No. 1 coiler, and the stopping position for the No. 2 coiler is set to 12 meters past the photoelectric detector of the No. 1 coiler. The position of the leading edge is detected by the photoelectric detector in front of the No. 1 coiler at the exit section, and the encoder records the distance traveled by the leading edge. This prevents the leading edge from stopping too far forward or backward, which could prevent the coiler from winding the strip smoothly, increasing winding time and affecting the efficiency and stability of the entire production line. The exit section coiler channel is as follows: Figure 2 As shown, the stop position of the No. 1 winding machine (red line) is as follows: Figure 3 As shown, the stop position of the No. 2 winding machine (red line) is as follows: Figure 4 As shown.

[0043] After the coiler unwinds and the assisted winding is complete, and the exit meets the threading conditions, the magnetic belt is activated. Immediately press the exit section threading button, and the exit section equipment starts running. The strip head enters between the drum and the belt assisted winding machine. After the strip has rotated three times on the drum, the coiler sets the tension, and the assisted winding opens and returns to its original position. The exit section increases speed by pressing the speed-up button. Simultaneously, the flying shear's front clamping rollers, the front and rear conveyor belts, and the steering rollers and pressure rollers automatically open according to the set conditions. The exit speed uses the set overspeed to pull the stored looper weight, ensuring that the exit looper weight is pulled to the minimum set value before the speed decreases for the next weld.

[0044] Compared to existing technologies, this invention has the following advantages: Based on the premise that product quality meets customer requirements, the unit adopts a continuous and stable central section process speed. Before the weld seam leveling machine slows down, the exit looper's looping amount is minimized using the exit speed. After the exit section slows down and rewinds, the strip steel exiting the furnace is guided into the exit looper. The exit looper winch, via a wire rope, pulls the looper trolley along the track, accumulating a certain amount of looping as the trolley moves. Utilizing the time the strip steel accumulates in the looper, the strip head is wound and positioned, the preceding coil is unwound, and the following strip is threaded and wound.

[0045] This invention utilizes precise control of the central section's process speed and tension, as well as the looper's allowance, to complete the single-channel winding process. This enables continuous and stable operation of the central section of the unit, reducing losses caused by interruptions. It provides conditions for precise control of the cold-rolled tinplate process, contributing to improved surface quality of the cold-rolled tinplate.

[0046] Compared with the prior art, the present invention has the following advantages:

[0047] 1. The method of the present invention enables the production line to continue operating while ensuring that the process products meet customer requirements until the faulty winding machine is repaired.

[0048] 2. A faulty winding machine can be stopped in time to prevent the fault from escalating further. Attached Figure Description

[0049] Figure 1 This is a velocity curve of the exit section of the present invention.

[0050] Figure 2 This is a schematic diagram of the winding machine channel at the exit section;

[0051] Figure 3 This is a schematic diagram showing the stop position of the No. 1 winding machine;

[0052] Figure 4 This is a schematic diagram showing the stop position of the No. 2 winding machine (red line);

[0053] In the diagram: 1. Winding machine No. 1; 2. Winding machine No. 2; 3. Encoder; 4. Photodetector; 5. Guide roller; 6. Flying shear; 7. Pressure roller; 8. Guide plate; 9. Switching guide plate; 10. Conveyor belt; 11.

[0054] 11. Magnetic belt; 12. Lower belt conveyor. Detailed Implementation

[0055] To enhance understanding of the present invention, the embodiments will be described in detail below with reference to the accompanying drawings.

[0056] Example 1: See Figures 1-4 A single-channel winding control method includes the following steps:

[0057] 1) On the exit screen, switch from dual-channel to single-channel and select the winding machine for threading the tape.

[0058] 2) Set the central section process speed to ensure that the single-channel winding and unwinding of the exit looper is met during the exit looper filling period, while avoiding excessive exit looper filling that could cause strip deviation. The central section speed is set to a filling rate of no more than 55% for the double looper at the exit, while also conforming to the product's process speed to ensure product performance meets customer requirements. Therefore, the central section process speed is set to v3. When the weld seam is 13 meters from the leveling machine, the exit section begins to slow down until the weld seam enters the leveling machine, at which point the speed drops to v2. After the weld seam is sheared by the flying shear, the trailing strip continues to move forward for winding and positioning. The trailing strip head stops running 1 meter after passing the No. 1 coiler's front guide roller, at which point the speed drops to 0. After the coiler stops positioning, unwinding continues. Once unwinding is complete and the winding assistance conditions are met, winding assistance is initiated. After winding assistance is complete and the threading conditions are met, the threading button is manually pressed to begin threading. The exit section speed increases from 0 to threading speed v1. After threading is completed and the exit running conditions are met, the RUN button is pressed to accelerate. At this point, the exit section speed increases from v1 to v5. When the exit looper's looping amount reaches a certain distance from the minimum looper's looping amount for the first time, the exit section speed decreases to v4 for looping (to prevent the looper from falling below the minimum set value in one pull, causing a malfunction). When the exit looper's looping amount decreases to a certain distance from the minimum looper's looping amount for the second time, the exit section speed decreases to the process speed v3. The exit section speed curve is shown below. Figure 1 As shown.

[0059] The formula for calculating the set speed of the process section is as follows:

[0060] Based on the minimum set value of the exit section looper, the exit section speed is kept synchronized with the central section speed. When the weld is a certain distance from the leveling machine, the time required for the exit section to decelerate from process speed v3 to 70mpm is:

[0061]

[0062] The distance from the point where the strip speed decreases to 70 mp at the exit section to the set stopping position is 74 m. Calculate the distance and time it takes for the strip speed to decrease from 70 mp to 0 mp.

[0063]

[0064] Calculate the time it takes for the strip to travel at a speed of 70 mpm.

[0065]

[0066] Single-channel take-up exit section stop time

[0067] t4 = 80s

[0068] Stop time at the exit section

[0069]

[0070]

[0071] The time taken for the exit section to go from a speed of 0 mpm to a crawl speed of 30 mpm is

[0072]

[0073] The exit section operates at a crawling speed of 30 mpm for a time of

[0074] t6 = 40s

[0075]

[0076] The time taken for the outlet section to travel from a creep speed of 30mpm to the set process speed v3 is

[0077] According to the process speed, after the exit section is pulled into the loop, the exit section speed drops to the central section process speed v3. During this period, the exit section decelerates from process speed v3 to zero, then resumes threading, and finally accelerates back to the central section process speed v3. The length of the strip fed into the exit loop during this time is...

[0078] l4=v3×(t1+t2+t3+t4+t5+t6+t7)

[0079] To ensure that the product process speed meets temperature requirements while preventing excessive filler weight at the exit loop from causing strip misalignment, the filler weight of the single-channel winding exit loop is set to no higher than α%. Based on the maximum storage capacity L of the exit loop, the filler weight is calculated as L × α%. To prevent damage to the equipment caused by emptying the exit loop during pulling, the minimum filler weight of the exit loop is set to β.

[0080] The filling sleeve length is calculated as follows:

[0081] Single-sleeve filling length l = L × α% - L × β%

[0082] Since the export looper is a double looper, the total length of the export looper is l4 = 2l.

[0083] Where v1 is the tape threading speed of the exit winding machine.

[0084] v2 - Speed ​​of weld seam smoothing machine and flying shear

[0085] v3 - Central Section Process Setting Speed

[0086] v4 - Second pull speed of the export looper

[0087] v5 - First pull speed of the export looper

[0088] a1 – Deceleration when the speed at the exit section drops from v3 to v2

[0089] a2 – Deceleration when the exit section velocity v2 drops to 0

[0090] a3 – Acceleration from exit speed increase to winding machine belt threading

[0091] a4 – Acceleration from the threading speed to the first pull speed of the exit loop.

[0092] 3) Before the weld reaches the leveling machine, the exit looper's sleeve length has been pulled to the set minimum value. The speed is reduced to the speed at which the weld passes the leveling machine and the flying shear via the master speed controller. When the material tracking system sends a signal indicating that the weld has reached a certain distance L1 from the flying shear at the exit section, the PLC system receives the signal and starts the auxiliary equipment. This continues until the clamping rollers in front of the flying shear close, and the lower magnetic belts before and after the flying shear close. Once the flying shear auxiliary equipment is ready, the signal returns to the material tracking system indicating that the flying shear is ready. When the weld continues to run to a certain distance L2 from the flying shear, the material tracking system issues a shearing command, the flying shear starts and completes the shearing action, and simultaneously the magnetic belt on the flying shear is energized. The sheared end of the belt adheres to the upper magnetic belt and moves forward with it.

[0093] 4) If using coiler 1 for threading and winding, the guide roller of coiler 1 closes after the strip head moves forward past the guide roller of coiler 1. If using coiler 2 for threading and winding, the guide roller of coiler 2 closes after the strip head moves forward past the guide roller of coiler 2, while the guide roller of coiler 1 opens. If the strip head stops on the guide plate between coilers 1 and 2 and has not passed the guide roller of coiler 2, the guide roller of coiler 1 closes, while the guide roller of coiler 2 remains open. The strip head stops after passing the photoelectric detector L meters away on coiler 1 (detected by the photoelectric detector and encoder). The magnetic belt automatically closes after the set time. To ensure that the stopping position of the subsequent strip head helps the coiler start winding quickly and accurately, the stopping position of the strip head on coiler 1 is set to stop after passing the photoelectric detector of coiler 1 by 11 meters. The stop position of the strip head on the No. 2 coiler is set so that the strip head stops 12 meters past the photoelectric detector on the No. 1 coiler. The position of the strip head is detected by the photoelectric detector in front of the No. 1 coiler at the exit section, and the encoder records the distance traveled by the strip head. This prevents the strip head from stopping too far forward or backward, which could prevent the coiler from winding the strip smoothly, increasing winding time and affecting the efficiency and stability of the entire production line. The exit section coiler channel is as follows: Figure 2 As shown, the stop position of the No. 1 winding machine (red line) is as follows: Figure 3 As shown, the stop position of the No. 2 winding machine (red line) is as follows: Figure 4 As shown.

[0094] 5) After the coiler unwinds and the auxiliary coiling is ready, and the exit meets the threading conditions, the magnetic belt is activated. Immediately press the exit section threading button. The exit section equipment starts running, and the strip head enters between the drum and the belt auxiliary coiler. After the strip has rotated 3 times on the drum, the coiler sets the tension, and the auxiliary coiling opens and returns to its original position. The exit section increases speed by pressing the speed-up button. At this time, the looper's stored looper quantity is pulled to ensure that the looper quantity is pulled to the minimum set value before the speed is reduced for the next weld. Simultaneously, the flying shear cuts the front clamping roller, the lower magnetic belt before and after the flying shear, and the steering roller and pressure roller automatically open.

[0095] This invention, based on the premise that product quality meets customer requirements, employs a continuous and stable central section process speed for the unit. Before the weld seam leveling machine slows down, the exit looper's looping amount is minimized using the exit speed. After the exit section slows down and rewinds, the strip steel exiting the furnace is guided into the exit looper. The exit looper winch, via a wire rope, pulls the looper trolley along the track, accumulating a certain amount of looping as the trolley moves. Utilizing the time the strip steel accumulates in the looper, the strip head is wound and positioned, the preceding coil is unwound, and the following strip is threaded and wound.

[0096] This invention utilizes precise control of the central section's process speed and tension, as well as the looper's allowance, to complete the single-channel winding process. This enables continuous and stable operation of the central section of the unit, reducing losses caused by interruptions. It provides conditions for precise control of the cold-rolled tinplate process, contributing to improved surface quality of the cold-rolled tinplate.

[0097] Example 2: The unit produces MR T-4 steel material with a thickness of 0.19mm and a width of 900mm, annealing curve 1C2, central section speed 650mpm. Furnace RTF and SF settings are 600 degrees Celsius, furnace tension is 273KG. During the unwinding process of the No. 2 coiler at the outlet, a malfunction prevented normal unwinding. On-site operators were unable to resolve the problem. To ensure continuous and stable operation of the unit, the personnel need to take the following steps;

[0098] 1) On the exit winding machine screen, switch from dual-channel to single-channel and select winding machine No. 1 for winding.

[0099] 2) Based on 1), and in combination with the continuous and stable operation of the furnace and the requirements of the product process, the temperature of the strip in the furnace is gradually reduced to 580 degrees. The furnace speed in the central section is gradually reduced to 280 mpm in combination with the plate temperature. The furnace tension is gradually reduced to about 180 KG according to the strip deviation and bending of the strip in the furnace.

[0100] Central section process speed setting

[0101] To ensure that the product process speed meets the temperature requirements while preventing excessive filling amount of the exit looper from causing strip deviation, the filling amount of the single-channel winding exit looper is set not to exceed 55%.

[0102] Based on an effective looper length of 1000m at the export end, a minimum looper length of 8% is set to ensure the safety of the looper equipment. The looper filling length for a single-channel winding export looper should not exceed 55%. The calculated filling length is as follows:

[0103] 1000m × 8% = 80m

[0104] 1000 × 55% = 550m

[0105] 550m - 80m = 470m

[0106] Since the export looper is a double looper, the total length of the export looper is 470m × 2 = 940m.

[0107] Based on the minimum set value of the exit section looper, the exit section speed is kept synchronized with the central section speed. When the weld is a certain distance from the leveling machine, the time required for the exit section to decelerate from process speed v3 to 70mpm is:

[0108]

[0109] The distance from the point where the strip speed decreases to 70 mp at the exit section to the set stopping position is 74 m. Calculate the distance and time it takes for the strip speed to decrease from 70 mp to 0 mp.

[0110]

[0111] Calculate the time it takes for the strip to travel at a speed of 70 mpm.

[0112]

[0113] Single-channel take-up exit section stop time

[0114]

[0115] Export stop time

[0116]

[0117]

[0118] The time taken for the exit section to go from a speed of 0 mpm to a crawl speed of 30 mpm is

[0119] The exit section operates at a crawling speed of 30 mpm for a time of

[0120]

[0121] The time taken for the outlet section to travel from a creep speed of 30mpm to the set process speed v3 is

[0122]

[0123] From the exit section, the speed decreases from process speed v3 to zero, then resumes threading, and finally increases back to process speed v3 in the middle section. During this period, the length of the strip fed into the exit looper by the process speed is...

[0124]

[0125] Calculated process speed

[0126] v3 = 290mpm

[0127] Temperature and speed matching table for annealing profile process requirements

[0128] 200-299 1C2 595 595

[0129] The calculated process speed has been confirmed to meet the requirements of the annealing process.

[0130] 3) Before the weld enters the leveling machine and before the speed is reduced, ensure that the exit looper pull is reduced to 8%. When the weld is a certain distance from the leveling machine, the strip speed has been reduced to 70 mpm. The weld enters the leveling machine and flying shear at this speed. When the weld is a certain distance from the flying shear, the front pressure roller of the flying shear closes, and the lower conveyor belt closes. After the weld is cut by the flying shear, the tail of the forward strip quickly swings to achieve rapid separation from the head of the subsequent strip. At the same time, the switching guide plate of No. 1 coiler and No. 2 coiler automatically opens, the front pressure roller of No. 1 coiler closes, and the tail of the forward strip moves forward with the magnetic belt.

[0131] 4) When the trailing strip head moves forward past the photoelectric detector set distance in front of the No. 1 coiler, the strip head stops on the guide plate of the No. 1 coiler, and the pressure roller of the No. 1 coiler remains closed. After the No. 1 coiler has finished unloading and the auxiliary coiler is ready, and the exit meets the threading conditions, the magnetic belt is activated on the exit screen. Immediately after activation, press the threading button for the exit section. The exit section equipment starts running, and the strip head continues to run between the No. 1 drum and the belt auxiliary coiler. After the strip has rotated 3 times on the drum, the coiler sets the tension, and the auxiliary coiler opens and returns to its original position. The exit section speeds up by pressing the speed-up button, and simultaneously the flying shear cuts the clamping rollers, lowers the magnetic belts before and after the flying shear, and the steering roller and pressure roller automatically open.

[0132] Open. When the looper is filled to 55% at the exit, the looper is pulled up by the exit speed to ensure that the looper is pulled up to the minimum set value before the next weld enters the leveling machine and before the speed is reduced. Single-channel winding is completed by filling the looper.

[0133] It should be noted that the above embodiments are not intended to limit the scope of protection of the present invention. Equivalent transformations or substitutions made based on the above technical solutions all fall within the scope of protection of the claims of the present invention.

Claims

1. A control method for single-channel winding, characterized in that, The method includes the following steps: Step 1: On the exit screen, switch from dual-channel to single-channel and select the tape winding machine. Step 2: Based on the principle that the product process speed and the filling height should not be too high, set the process speed for the central section, and utilize the single-channel unwinding and winding during the filling period of the exit looper. Step 3: Set the stop position for the winding machine head to stop threading after the exit shearing is completed. Step 4: After the winding machine finishes unloading, when the threading conditions are met, press the threading button at the exit section to thread and wind the tape. When the winding machine's auxiliary winding opens and the operating conditions are met, press the run button at the exit section to increase the speed and pull the sleeve.

2. The control method for single-channel winding according to claim 1, characterized in that, In step 2, the process speed of the central section is set to ensure that the single-channel winding and unwinding of the exit looper are met during the filling period. The exit looper height is set so that the filling amount of the double looper does not exceed 55%. At the same time, the process speed of the central section is set to v3 according to the speed range required by the product's process temperature. When the weld is 13 meters away from the leveler, the exit section begins to slow down until the weld enters the leveler, at which point the speed drops to v2. After the weld is sheared by the flying shear, the tail of the forward strip continues to move forward for winding, positioning, and unwinding. The head of the backward strip passes through the L-meter guide roller in front of the No. 1 coiler and stops running. At this time, the speed drops to 0. After the coiler stops at its positioning position, unwinding continues. Once unwinding is complete and the winding assistance conditions are met, winding assistance is initiated. After winding assistance is complete and the threading conditions are met, the threading button is manually pressed to begin threading. The exit section speed increases from 0 to threading speed v1. After threading is completed and the exit running conditions are met, the RUN button is pressed to accelerate the operation. At this point, the exit section speed increases from v1 to v5. When the exit looper's loop length reaches a certain distance from the minimum looper's loop length for the first time, the exit section speed decreases to v4 for looping. When the exit looper's loop length decreases to a certain distance from the minimum looper's loop length for the second time, the exit section speed decreases to the process speed v3. The formula for calculating the set speed of the process section is as follows: Based on the minimum set value of the exit section looper, the exit section speed is kept synchronized with the central section speed. When the weld is a certain distance from the leveling machine, the time required for the exit section to decelerate from process speed v3 to 70mpm is: The distance from the point where the strip speed decreases to 70 mp at the exit section to the set stopping position is 74 m. Calculate the distance and time it takes for the strip speed to decrease from 70 mp to 0 mp. Calculate the time it takes for the strip to travel at a speed of 70 mpm. The stop time of the single-channel take-up exit section is t4 = 80s, Stop time at the exit section The time taken for the exit section to go from a speed of 0 mpm to a crawl speed of 30 mpm is The exit section operates at a crawling speed of 30 mpm for a time of t6 = 40s The time taken for the outlet section to travel from a creep speed of 30mpm to the set process speed v3 is According to the process speed, after the exit section is pulled into the loop, the exit section speed drops to the central section process speed v3. During this period, the exit section decelerates from process speed v3 to zero, then resumes threading, and finally accelerates back to the central section process speed v3. The length of the strip fed into the exit loop during this time is... l4=v3×(t1+t2+t3+t4+t5+t6+t7) To ensure the product process speed meets temperature requirements while preventing excessive filler weight at the exit looper that could cause strip misalignment, the filler weight at the single-channel winding exit looper is set to no higher than α%. Based on the maximum storage capacity L of the exit looper, the filler weight is calculated as L × α%. To prevent damage to the equipment caused by emptying the exit looper during pulling, the minimum filler weight at the exit looper is set to β%. The filling sleeve length is calculated as follows: Single-sleeve filling length l = L × α% - L × β% Since the export looper is a double looper, the total length of the export looper is l4 = 2l. Where: v1 - tape threading speed of the exit winding machine v2 - Weld seam smoothing machine and flying shear speed v3-Central Section Process Setting Speed v4 - Export looper second pull speed v5-Export Loop First Pulling Speed a1 - Deceleration when the exit section speed decreases from v3 to v2 a2 - Deceleration when the exit section velocity v2 drops to 0 a3 - Exit acceleration to winding machine belt feed acceleration a4 - The acceleration of the threading speed to the first pull speed of the exit loop.

3. The single-channel winding control method according to claim 2, characterized in that, In step 3, Before the weld reaches the leveling machine, the exit looper's sleeve length has been pulled to the set minimum value. The speed is reduced to the speed at which the weld passes through the leveling machine and the flying shear via the master speed controller. When the material tracking system sends a signal that the weld has reached a certain distance L1 from the flying shear at the exit section, the PLC system receives the signal and starts the auxiliary equipment. The clamping rollers in front of the flying shear are closed, and the lower magnetic belts in front and behind the flying shear are closed. After the flying shear auxiliary equipment is ready, the signal returns to the material tracking system to indicate that the flying shear is ready. When the weld continues to run to a certain distance L2 from the flying shear, the material tracking system sends a shearing command, and the flying shear starts to complete the shearing action. At the same time, the magnetic belt on the flying shear is energized, and the sheared head is attracted to the upper magnetic belt and moves forward with the belt.

4. The single-channel winding control method according to claim 3, characterized in that, In step 4, if winding with coiler No. 1, the belt head moves forward past the front guide roller of coiler No. 1, and the guide roller pressure roller closes. If winding with coiler No. 2, the belt head moves forward past the front guide roller of coiler No. 2, and the front guide roller pressure roller of coiler No. 2 closes, while the front guide roller pressure roller of coiler No. 1 opens. If the belt head stops on the guide plate between coilers No. 1 and No. 2 and has not passed the front guide roller of coiler No. 2, the front guide roller pressure roller and pinch roller of coiler No. 1 close, while the front guide roller pressure roller of coiler No. 2 remains open. The belt head stops after passing the photoelectric detector L meters away from coiler No. 1, and the magnetic belt magnetization time reaches the set time. To ensure the subsequent coiler can quickly and accurately begin winding, the stopping position of the strip head on coiler 1 is set to 11 meters past the photoelectric detector on coiler 1, and the stopping position of coiler 2 is set to 12 meters past the photoelectric detector on coiler 1. The position of the strip head is detected by the photoelectric detector before coiler 1 at the exit section, and the encoder records the distance traveled by the strip head. This prevents the strip head from stopping too far forward or backward, which could prevent the coiler from winding the strip smoothly, increasing winding time and affecting the efficiency and stability of the entire production line. After the coiler unloads the coil and the auxiliary coiling is ready, and the exit meets the threading conditions, the upper magnetic belt is energized. Immediately press the threading button for the exit section, and the exit section equipment starts running. The strip head enters between the drum and the belt auxiliary coiler. After the strip rotates 3 times on the drum, the coiler sets the tension, the auxiliary coiling opens and returns to its original position, and the exit section speeds up by pressing the speed-up button. At the same time, the flying shear cuts the front clamping roller, the front and rear conveyor belts of the flying shear, and the steering roller and pressure roller automatically open according to the set conditions. The exit speed uses the set overspeed to pull the amount of loop stored in the exit loop, ensuring that the amount of loop stored in the exit loop is pulled to the minimum set value before the speed is reduced for the next weld.

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