Strip production method, control module, computer-readable medium, and descaling system

Abstract

The present invention discloses a strip production method and a control module for a descaling system, comprising the following steps: after the tail of the previous strip leaves the uncoiler, the current strip is uncoiled by the uncoiler; after the head of the current strip runs to the preset length from the shearing machine, the current strip is sheared by the shearing machine to obtain the real-time position of the head of the sheared current strip; the working states of the scale breaker and the descaling unit are controlled according to the real-time position of the head of the current strip; when the real-time position information of the head of the sheared current strip indicates that the head of the current strip runs through the scale breaker and the descaling unit to the coiler, in response to the detection signal characterizing the establishment of tension of the current strip, the scale breaker is controlled to start; after the tail of the current strip leaves the uncoiler, the next strip is uncoiled by the uncoiler, and so on, thereby improving the overall working efficiency, increasing production capacity and reducing costs.

Description

Technical Field

[0001] The present invention relates to the technical field of strip descaling, and particularly to a strip production method, a control module, a computer-readable medium, and a descaling system. Background Art

[0002] Starting from loading the coiled strip, basically, it depends on the operator's actual experience and proficiency to manually operate the corresponding equipment. Moreover, during the threading process of the equipment, the operator needs to cooperate to operate different equipment to ensure the synchronization of the equipment operation and avoid problems or accidents.

[0003] Moreover, in order to reduce the equipment process complexity and the risk of misoperation, some equipment manufacturers wait until the previous steel coil is completely wound before starting to thread the next steel coil. During this period, a large amount of time is wasted, seriously affecting the work efficiency, resulting in reduced production capacity and increased costs. Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the related technologies to a certain extent. For this purpose, the present invention provides a steel coil descaling process that can continuously perform strip descaling without waiting for the previous strip to be processed, improving work efficiency.

[0005] To achieve the above object, the first aspect of the present invention discloses a strip production method for a control module of a descaling system. The descaling system includes an uncoiler, a shearing machine, a scale breaker, a descaling unit, and a coiler arranged in sequence along the advancing direction of the strip. The production method includes the following steps:

[0006] After the tail of the previous strip leaves the uncoiler, use the uncoiler to unwind the current coiled strip;

[0007] After the head of the current coiled strip runs to the pre-set length at the shearing machine, use the shearing machine to cut the current coiled strip and obtain the real-time position of the head of the current coiled strip after shearing;

[0008] Control the working states of the scale breaker and the descaling unit according to the real-time position of the head of the current coiled strip;

[0009] When the real-time position information of the head of the current coiled strip after shearing indicates that the head of the current coiled strip has passed through the scale breaker and the descaling unit and runs to the coiler, in response to the detection signal indicating that the current coiled strip has established tension, control the scale breaker to work and control the strip to run at a first speed;

[0010] When the tail of the current coiled strip leaves the uncoiler, use the uncoiler to unwind the next coiled strip and control the strip to run at a second speed, and the second speed is less than the first speed;

[0011] A rough straightener is provided upstream of the descaling machine, and a fine straightener is provided downstream of the descaling machine. After the tail of the current coil strip steel leaves the uncoiler, the following steps are further included:

[0012] After the tail of the current coil strip steel passes through the rough straightener, control the roll gap of the roll box of the rough straightener to open;

[0013] After the tail of the current coil strip steel passes through the descaling machine, control the roll gap of the work roll box of the descaling machine to open, and the descaling machine does not work;

[0014] After the tail of the strip steel passes through the fine straightener, control the roll gap of the roll box of the fine straightener to open.

[0015] Optionally, the step of controlling the working states of the descaling machine and the descaling unit according to the real-time position of the head of the current coil strip steel includes:

[0016] After the shearing machine shears the current coil strip steel, control the roll gap of the work roll box of the descaling machine to open, and the descaling machine does not work;

[0017] When the real-time position of the head of the current coil strip steel indicates that the head of the current coil strip steel is at a preset distance from the descaling machine, control the descaling unit to be in an open state.

[0018] Optionally, when the strip steel runs at a first speed, control the ejection motor of the descaling unit to run at a first speed; when the strip steel runs at a second speed, control the ejection motor of the descaling unit to run at a second speed; the rotational speed of the ejection motor of the descaling unit is positively correlated with the running speed of the strip steel, and the smaller the running speed of the strip steel, the smaller the rotational speed of the ejection motor of the descaling unit.

[0019] Optionally, the step of controlling the strip steel to run at a first speed includes:

[0020] Control the uncoiler, rough straightener, fine straightener, and coiler to run at the first speed simultaneously, compare the speed fed back by the fine straightener with the first speed to obtain a speed difference, and control the speeds of the uncoiler, rough straightener, fine straightener, and coiler according to the speed difference.

[0021] Optionally, a first centering device is provided between the descaling machine and the fine straightener, an entrance pinch roll is provided between the fine straightener and the descaling unit, and a second centering device and an exit pinch roll are sequentially provided between the descaling unit and the coiler;

[0022] When the real-time position information of the head of the current coiled strip after shearing indicates that the head of the current coiled strip has passed through the descaling machine and the descaling unit and reached the coiler, in response to the detection signal characterizing the establishment of tension of the current coiled strip, after controlling the descaling machine to work, it further includes: controlling the deviation rectifying rollers of the first centering device and the second centering device to open;

[0023] When the tail of the current coiled strip leaves the uncoiler, it further includes: after the tail of the strip passes through the entry pinch rolls, controlling the roll gap of the entry pinch rolls to open; after the tail of the strip passes through the exit pinch rolls, controlling the roll gap of the exit pinch rolls to open.

[0024] The second aspect of the present invention discloses a control module, including: one or more processors; a memory, on which one or more computer programs are stored, and when the one or more computer programs are executed by the one or more processors, the one or more processors implement the strip production method provided by the first aspect of the present invention.

[0025] The third aspect of the present invention discloses a computer-readable medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the strip production method provided by the first aspect of the present invention.

[0026] The fourth aspect of the present invention discloses a descaling system for strip descaling, including an uncoiler, a shearing machine, a descaling machine, a descaling unit, and a coiler arranged in sequence along the advancing direction of the strip, and the descaling system further includes the control module provided by the first aspect of the present invention.

[0027] These features and advantages of the present invention will be detailedly disclosed in the following specific embodiments and the drawings. The best embodiments or means of the present invention will be elaborately presented in combination with the drawings, but it is not a limitation to the technical solution of the present invention. Additionally, these features, elements, and components appearing in each of the following texts and drawings are multiple, and different symbols or numbers are marked for convenience of representation, but all represent components with the same or similar structures or functions. Description of the Drawings

[0028] The present invention will be further described below in conjunction with the drawings:

[0029] Figure 1 It is a flow block diagram of the production method of the present invention.

[0030] Figure 2 It is a side view layout diagram of the descaling system of the present invention.

[0031] Figure 3 It is a top view layout diagram of the descaling system of the present invention.

[0032] Among them, 1. Cantilever uncoiler; 2. Rough leveler; 3. Shearing machine; 4. Scale breaker; 5. First centering device; 6. Fine leveler; 7. First transfer roller table; 8. Stock head bender; 9. Second transfer roller table; 10. Inlet pinch roll; 11. Descaler unit; 12. Second centering device; 13. Outlet pinch roll; 14. Observation roller table; 15. First tension roll; 16. Second tension roll; 17. Oil applicator; 18. Third centering device; 19. Steering pinch roll; 20. Coiler; 21. Loading trolley; 22. Unloading trolley. Detailed implementation manners

[0033] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. Based on the embodiments in the implementation manners, it is intended to explain the present invention and should not be construed as a limitation to the present invention.

[0034] As used herein, the phrase "one embodiment" or "example" or "instance" means that a particular feature, structure, or characteristic described in connection with the embodiment itself may be included in at least one embodiment of the present patent disclosure. The appearances of the phrase "in one embodiment" in various positions in the specification do not necessarily refer to the same embodiment.

[0035] In the related art, starting from loading the steel coil, basically, it depends on the operator's actual experience and proficiency to manually operate the corresponding equipment. Moreover, during the threading process of the equipment, the operator needs to cooperate to operate different equipment to ensure the synchronization of the equipment operation and avoid problems or accidents. Moreover, in order to reduce the equipment process complexity and the risk of misoperation, some equipment manufacturers wait until the previous steel coil is completely wound before starting the threading of the next steel coil, wasting a lot of time during this period, seriously affecting the work efficiency, resulting in reduced production capacity and increased costs.

[0036] In view of this, referring to the attached Figure 1 , one embodiment of the present invention discloses a strip steel production method for a control module of a descaling system. The descaling system includes an uncoiler, a shearing machine, a scale breaker, a descaling unit, and a coiler arranged in sequence along the advancing direction of the strip steel. The production method includes the following steps:

[0037] S10. After the tail of the previous strip steel leaves the uncoiler, use the uncoiler to uncoil the current coil of strip steel;

[0038] S20. After the head of the current coil of strip steel runs to the pre-stored length at the shearing machine, use the shearing machine to shear the current coil of strip steel and obtain the real-time position of the head of the sheared current coil of strip steel;

[0039] S30. Control the working states of the descaling machine and the descaling unit according to the real-time position of the head of the current coil strip, specifically including:

[0040] S31. After the shearing machine shears the current coil strip, control the roll gap of the working roll box of the descaling machine to open, and the descaling machine does not work.

[0041] S32. When the real-time position of the head of the current coil strip indicates that the head of the current coil strip is at a preset distance from the descaling machine, control the descaling unit to be in an open state.

[0042] S40. When the real-time position information of the head of the current coil strip after shearing indicates that the head of the current coil strip has run through the descaling machine and the descaling unit to the coiler, in response to the detection signal indicating that the current coil strip establishes tension, control the descaling machine to work.

[0043] S50. When the tail of the current coil strip leaves the uncoiler, use the uncoiler to uncoil the next coil strip, and so on.

[0044] In order to further improve the efficiency of the strip during threading, as one of the feasible embodiments of the present invention, the process of the head of the strip running from the uncoiler to the coiler and establishing tension specifically includes:

[0045] Use the uncoiler to uncoil the current coil strip, and after the current coil strip is uncoiled, it passes through the rough leveler, shearing machine, descaling machine, first centering device, finishing leveler, entrance pinch roll, descaling unit, second centering device, exit pinch roll to the coiler in sequence.

[0046] When the leading end of the current coil strip passes through the shearing machine, control the roll gap of the working roll box of the descaling machine to open to a first preset value, and the descaling machine does not work, that is, the descaling machine does not participate in descaling.

[0047] When the leading end of the current coil strip is at a preset distance from the descaling machine, control the descaling unit to work; the value of the preset distance is between 2 and 5 meters.

[0048] When the leading end of the current coil strip runs to the coiler and the current coil strip is coiled 2 - 3 turns on the coiler, trigger the detection signal indicating that the current coil strip establishes tension.

[0049] In response to a detection signal characterizing the establishment of tension in the current coil strip, control the operation of the descaling machine (the roll gap of the work roll box of the descaling machine returns to a second preset value, and the first preset value is greater than the second preset value), the descaling machine participates in descaling, control the current coil strip to run at a first speed, control the deviation rectifying rollers of the first centering device and the second centering device to automatically open after the strip threading is completed, and until the next coil strip is uncoiled, the deviation rectifying rollers center the next coil strip according to a preset width range.

[0050] After the tail of the strip passes through the rough leveler, control the roll box of the rough leveler to open;

[0051] After the tail of the strip passes through the descaling machine, control the work roll box of the descaling machine to open, and the descaling machine stops working;

[0052] After the tail of the strip passes through the finishing leveler, control the roll box of the finishing leveler to open.

[0053] After the tail of the strip passes through the entry pinch roll, control the roll gap of the entry pinch roll to open;

[0054] After the tail of the strip passes through the exit pinch roll, control the roll gap of the exit pinch roll to open.

[0055] In an achievable embodiment, after the head of the current coil strip runs to the preset length at the shearing machine, use the shearing machine to shear the current coil strip, and obtain the real-time position of the head of the current coil strip after shearing, including:

[0056] Use the measuring wheel counter or encoder set on the shearing machine to calculate the real-time position of the head of the current coil strip after shearing.

[0057] In this embodiment, in step S40, when the real-time position information of the head of the current coil strip after shearing indicates that the head of the current coil strip runs through the descaling machine and the descaling unit to the coiler, after controlling the operation of the descaling machine in response to a detection signal characterizing the establishment of tension in the current coil strip, it further includes:

[0058] S41. Control the strip to run at a first speed; specifically, control the uncoiler, rough leveler, finishing leveler, and coiler to run at the first speed simultaneously, and compare the speed fed back by the finishing leveler with the first speed to obtain a speed difference, and control the speeds of the uncoiler, rough leveler, finishing leveler, and coiler according to the speed difference.

[0059] After the tail of the current strip steel leaves the decoiler, the following steps are further included: controlling the strip steel to run at a second speed, where the second speed is less than the first speed.

[0060] When the strip steel runs at the first speed, control the projection motor of the descaling unit to run at the first speed; when the strip steel runs at the second speed, control the projection motor of the descaling unit to run at the second speed; the rotational speed of the projection motor of the descaling unit is positively correlated with the running speed of the strip steel, and the smaller the running speed of the strip steel, the smaller the rotational speed of the projection motor of the descaling unit.

[0061] In this embodiment, the weight, width, thickness, material, etc. of the strip steel can be obtained, and the theoretical length of the steel coil is generated by dividing the total weight by the density, width, and thickness simultaneously. After the head of the strip steel runs from the decoiler to the coiler and the tension is established, control the strip steel to run at the first speed, specifically, it can run within the range of 0 - 300 meters per minute. When the remaining length of the current strip steel in the decoiler is less than 5 - 100 meters, control the strip steel to run at the second speed, specifically, it can run within the range of 0 - 30 meters per minute. The main purpose is to reduce the tail - throwing speed and prevent damage to the equipment during tail - throwing.

[0062] As a second aspect of the present invention, a control module is provided, including: one or more processors; a memory on which one or more computer programs are stored, and when the one or more computer programs are executed by the one or more processors, the one or more processors implement the strip - steel production method provided in the first aspect of the present invention.

[0063] The control module may further include one or more I / O interfaces, connected between the processor and the memory, configured to implement information interaction between the processor and the memory.

[0064] Among them, the processor is a device with data - processing capabilities, including but not limited to a central processing unit, etc.; the memory is a device with data - storage capabilities, including but not limited to a random - access memory, a read - only memory, an electrically erasable programmable read - only memory, a flash memory; the I / O interface is connected between the processor and the memory and can implement information interaction between the processor and the memory, including but not limited to a data bus, etc.

[0065] The processor, the memory, and the I / O interface are interconnected through a bus and then connected to other components of the control module.

[0066] As a third aspect of the present invention, a computer - readable medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the strip - steel production method provided in the first aspect of the present invention is implemented.

[0067] As a fourth aspect of the present invention, a descaling system for descaling strip steel is provided, which includes an uncoiler 1, a rough leveler 2, a shearing machine 3, a descaling machine 4, a centering device, a finishing leveler 6, a descaling unit and a coiler 20 arranged in sequence along the advancing direction of the strip steel. The descaling system further includes a control module and a human-machine interaction device. The shearing machine 3 is provided with a measuring wheel counter, which can detect the running distance of the head of the strip steel and send a detection signal representing the running distance of the head of the strip steel to the control module. The human-machine interaction device can send the length information of the strip steel to the control module.

[0068] In some other embodiments, the descaling system, as Figure 2 and 3 shown, the descaling production line includes a cantilever uncoiler 1, a descaling unit 11 and a coiler 20. The cantilever uncoiler 1 is arranged at the upstream end of the descaling unit 11, and a rough leveler 2, a shearing machine 3, a descaling machine 4, a first centering device 5, a finishing leveler 6, a first transfer roller table 7, a head bender 8, a second transfer roller table 9 and an entry pinch roll 10 are arranged in sequence between the cantilever uncoiler 1 and the descaling unit 11; the coiler 20 is arranged at the downstream end of the descaling unit 11, and a second centering device 12, a pinch roll 13, an inspection roller table 14, a first tension roller 15, a second tension roller 16, an oiling machine 17, a third centering device 18 and a turning pinch roll 19 are arranged in sequence between the descaling unit 11 and the coiler 20. The descaled strip steel is conveyed out from the coiler 20 through a blanking trolley 22, and the strip steel is conveyed to the uncoiler 1 through a loading trolley 21. The shearing machine 3 is provided with a measuring wheel counter, which can detect the running distance of the head of the strip steel and send a detection signal representing the running distance of the head of the strip steel to the control module. The human-machine interaction device can send the length information of the strip steel to the control module.

[0069] The descaling process of the strip steel in combination with the above descaling system is as follows: First, the operator needs to input the basic information of the strip steel, such as the weight, width, thickness, material, etc. of the strip steel, into the operation interface of the human-machine interaction device and transmit it to the control module; at the same time, the theoretical length of the strip steel can be generated, which can be calculated by dividing the total weight by the density, width and thickness. Then, the following operations are carried out:

[0070] During the strip threading process, the coiled strip stored on the saddle is transported to the uncoiler through the loading trolley 21, and the strip head is introduced into the pinch roller and the rough leveler. The rough leveler generates the downward pressure according to the strip information. The strip head passing through the rough leveler generally has a circular arc bend and the thickness of the head is uneven, so it needs to be sheared by the shearing machine to remove the waste. At the same time, since the strip head is cut at the shearing machine, the position of the strip head is exactly equal to the position of the shearing machine blade. Therefore, the distance that the strip head continues to be transported forward can be tracked by counting the measuring wheel. After the strip head passes through the centering device, the centering device positions the deviation correction wheel through the preset steel strip width (generally steel strip width + 4-10mm); because the descaling machine does not work during the strip threading process, it is in an automatic opening device to facilitate the strip head to pass through, without the need for the operator to manually open it, so as to save time; after passing through the descaling machine, the strip head continues to move forward and enters the fine straightening machine, which automatically presses down according to the strip information; when the strip thickness is ≤3mm, the strip head automatically stops threading and bends the strip head when it passes through the material head bending machine 200mm. The strip passes through the material head bending machine and continues to pass through the pinch roller. To ensure safety, the upper roller is in an open device when the material head does not pass through the pinch roller. After the material head passes through the pinch roller, the upper roller automatically presses down and rotates synchronously with the strip to provide power for the steel strip to be transported forward.

[0071] Since it takes about 15-30 seconds to start the EPS unit, in order to avoid waiting before the steel belt enters the EPS unit or uneven descaling of the belt head, the EPS unit is automatically started when the belt head is 2-5 meters away from the entrance of the EPS unit. At the same time, the internal pinch rollers of the EPS unit are pressed down in sequence after the belt head passes through, so as to avoid problems such as uneven belt heads and pinch roller carding; the belt threading rod inside the EPS unit is automatically opened and closed according to the position of the belt head (the so-called opening means that the belt threading rod is parallel to the conveying direction of the steel belt and can hold the steel belt; closing means that after the belt head passes through, the belt threading rod is at a certain angle to the conveying direction of the steel belt to avoid the ejection area and avoid the loss of the belt threading rod)

[0072] After the belt head passes through the EPS unit, there are subsequent processes such as surface cleaning, squeezing and drying. In order to save equipment energy consumption, surface cleaning is also turned on after the belt head approaches (usually 2-5 meters). After the belt head is cleaned and passes through the squeezing roller, the squeezing roller is pressed down to reduce the residual moisture on the steel belt surface. When the belt head enters the drying station, the edge drying automatically enters the corresponding width position according to the bandwidth and dries the edge of the steel belt; the surface drying air knife starts blowing, and after the belt head passes through the air dryer, the top air knife is lowered to get close to the surface of the steel belt to obtain a better drying effect on the surface of the steel belt; the belt head passing through the dryer enters the pinch roller, centering device and other equipment. The centering is mainly because when the steel belt passes through the descaling unit, the descaling unit has no centering device, and the belt head may have the problem of deviation; pinching is to provide better forward power for the belt head to continue to be transported forward; A tension machine is set up after the pinch roller. Its main purpose is to provide a large reverse tension required for winding when the steel strip is tailing off. The oiler can apply oil or no oil to the surface of the descaled steel strip according to different needs (the oiling is mainly to prevent the surface of the steel strip from rusting after a long time). The strip head enters the strip turning and pinching device. After the strip head is turned, it passes through the guide plate and enters the winder. After the strip head enters the winder jaws and is clamped, the winder shaft core rotates at a speed synchronized with the steel strip conveying. After 2-5 turns, the winder speeds up and tightens the strip. At this point, the strip is threaded, and the strip head is tightened in the winder, and the steel strip is in a continuous operation state.

[0073] It should be noted that when the strip is threaded, if the descaling process section is an acid-free descaling process such as dry shot blasting or wet sand blasting, the descaling efficiency is affected by the speed of the projectiles, steel sand, working fluid, etc. or the total amount of projectiles. It is known that the speed during the threading process is 30% or more slower than the normal operation. In order to save the consumption of projectiles and the energy consumption of projectile motors or other motors used for material circulation equipment, the projectile speed can be reduced by a corresponding proportion or the projectile amount can be reduced by a corresponding proportion;

[0074] After the steel coil is threaded, the same or similar steel coil specifications are automatically matched according to the thickness, width and material of the steel coil input by the HMI, as well as the production records automatically recorded in the system before (for example, the specification of the steel coil threaded is 2X1200, the material is Q235, and the threading speed is 15 meters / minute; according to the system records, after the normal establishment of this specification, the descaling speed with descaling is 50 meters / minute, and the speed without descaling is 35 meters / minute. The system automatically and quickly adjusts the steel strip speed to the speed in the operation record according to the descaling machine input situation); in order to reduce the problem of uneven descaling or poor descaling quality of the steel coil, the automatic increase speed can be 80% of the system record;

[0075] During the normal operation stage, according to the preset specifications of the strip steel (mainly parameters such as thickness, width, strength, etc.), the straightening machine, descaling machine, coiler, tension rolls, etc. will automatically perform corresponding actions. The uncoiler changes from actively feeding forward during threading to passively pulling the strip steel backward and provides a certain reverse tension, keeping the strip steel in a certain extended state, so as to ensure the straightening or descaling effect of the strip steel.

[0076] For example, when the thickness of the strip steel ≤ 5 mm, the working rolls of the descaling machine will automatically press down to the preset position. At this time, the coiler, tension rolls, pinch rolls, and precision straightening machine increase the tension on the outlet side of the descaling machine, while the uncoiler and rough straightening machine are in the reverse tension building state, so as to obtain better straightening and descaling effects of the strip steel (descaling is mainly to improve the speed of scale removal). When the coiler is continuously coiling, the overall tension of the system is in a balanced and stable state, and the running speed will be automatically adjusted dynamically according to the quality of the descaling process section and the detection device at the rear end of the subsequent process section to ensure the consistency of descaling quality and improve work efficiency.

[0077] As the strip steel continues to run and be processed, the system will automatically record the length of the strip steel that has already run and the remaining length of the strip steel. Generally, when there are 30 - 50 meters remaining in the uncoiler, the system will automatically reduce the speed. The main purpose is to reduce the tailing speed and prevent damage to the equipment during tailing. For example, during normal operation, the speed is 50 - 80 meters per minute. When the system detects that there are 50 meters of strip steel remaining in the uncoiler, it will automatically reduce the speed to ensure that when the final coil tail disengages from the uncoiler, the speed is 10 - 20 meters per minute. Since it is known that the operation of the descaling machine is to improve the speed of scale removal, and after the speed reduction starts, descaling is no longer necessary. Therefore, when the current speed is reduced to 30% or more slower than the fastest speed, the descaling machine will slowly open to the maximum state and not participate in descaling. At this time, the tension system will reduce the overall line tension according to the set requirements.

[0078] During the strip steel tailing stage, when the strip steel disengages from the uncoiler, it belongs to the strip steel tailing stage. At this time, the descaling machine is in the open state, and the rough straightening machine and precision straightening machine are in the working state. At this time, the rough straightening machine and precision straightening machine provide forward tension, opposite to the coiler, to ensure the tension during coiling.

[0079] When the coil tail passes through the rough straightening machine and precision straightening machine respectively, the roller boxes of the rough straightening machine and precision straightening machine will automatically open to facilitate the next strip steel coil head to pass through the equipment. At this time, the tension machine is in the downward pressing and tensioning state to ensure the tension of the strip steel during coiling.

[0080] To improve work efficiency, when the previous strip steel has just disengaged from the uncoiler, the subsequent strip steel is already in the state where the loading trolley is in place and starts to be loaded into the uncoiler to save time.

[0081] Preferably, the strip tail-swinging speed is faster than the strip threading speed, so as to avoid the influence of the tail-swinging process on the threading process.

[0082] The present invention can improve work efficiency, and it is automatically realized by the equipment, reducing the dependence on the proficiency of operators. In particular, it can shorten the time for strip head threading and tail tail-swinging. The work efficiency of the equipment is relatively low in these two stages, thereby increasing the proportion of the normal stage time of the equipment and improving production capacity and efficiency.

[0083] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the content described in the drawings and the above specific implementation manner. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A strip production method, for a control module of a descaling system, the descaling system comprising an uncoiler, a shearing machine, a scale breaker, a descaling unit and a coiler arranged in sequence along the advancing direction of the strip, characterized in that, The production method includes the following steps: After the tail of the previous coil strip leaves the uncoiler, the current coil strip is uncoiled by using the uncoiler. After the head of the current coil strip runs to the preset length at the shearing machine, the current coil strip is sheared by using the shearing machine to obtain the real-time position of the head of the current coil strip after shearing. Control the working states of the descaling machine and the descaling unit according to the real-time position of the head of the current coil strip. When the real-time position information of the head of the current coil strip after shearing indicates that the head of the current coil strip runs through the descaling machine and the descaling unit to the coiler, in response to the detection signal characterizing the establishment of tension of the current coil strip, control the descaling machine to work and control the strip to run at the first speed. After the tail of the current coil strip leaves the uncoiler, use the uncoiler to uncoil the next coil strip and control the strip to run at the second speed, and the second speed is less than the first speed. A rough straightening machine is arranged upstream of the descaling machine, and a fine straightening machine is arranged downstream of the descaling machine. After the tail of the current coil strip leaves the uncoiler, it further includes: After the tail of the current coil strip passes through the rough straightening machine, control the roll gap of the roll box of the rough straightening machine to open. After the tail of the current coil strip passes through the descaling machine, control the roll gap of the working roll box of the descaling machine to open and the descaling machine does not work. After the tail of the strip passes through the fine straightening machine, control the roll gap of the roll box of the fine straightening machine to open.

2. The strip steel production method according to claim 1, characterized in that, The control of the working states of the descaling machine and the descaling unit according to the real-time position of the head of the current coil strip includes: After the shearing machine shears the current coil strip, control the roll gap of the working roll box of the descaling machine to open and the descaling machine does not work. When the real-time position of the head of the current coil strip indicates that the head of the current coil strip is at a preset distance from the descaling machine, control the descaling unit to be in an open state.

3. The strip production method according to claim 1, characterized in that, When the strip runs at the first speed, control the ejection motor of the descaling unit to run at the first speed; when the strip runs at the second speed, control the ejection motor of the descaling unit to run at the second speed; the rotation speed of the ejection motor of the descaling unit is positively correlated with the running speed of the strip, and the smaller the running speed of the strip, the smaller the rotation speed of the ejection motor of the descaling unit.

4. The strip production method according to claim 1, characterized in that, The control of the strip to run at the first speed includes: Control the uncoiler, the rough straightening machine, the fine straightening machine, and the coiler to run at the first speed simultaneously, and compare the speed fed back by the fine straightening machine with the first speed to obtain a speed difference, and control the speeds of the uncoiler, the rough straightening machine, the fine straightening machine, and the coiler according to the speed difference.

5. The strip production method according to claim 1, characterized in that, A first centering device is arranged between the descaling machine and the fine straightening machine, an inlet pinch roll is arranged between the fine straightening machine and the descaling unit, and a second centering device and an outlet pinch roll are arranged in sequence between the descaling unit and the coiler; When the real-time position information of the head of the current coiled strip after shearing indicates that the head of the current coiled strip has passed through the descaling machine and the descaling unit and runs to the coiler, after controlling the descaling machine to work in response to the detection signal characterizing the establishment of tension of the current coiled strip, it further includes: controlling the deviation rectifying rollers of the first centering device and the second centering device to open; When the tail of the current coiled strip leaves the uncoiler, it further includes: after the tail of the strip passes through the entry pinch rolls, controlling the roll gap of the entry pinch rolls to open; after the tail of the strip passes through the exit pinch rolls, controlling the roll gap of the exit pinch rolls to open.

6. A control module, characterized in that, It includes: One or more processors; A memory, on which one or more computer programs are stored. When the one or more computer programs are executed by the one or more processors, the one or more processors implement the strip production method according to any one of claims 1 to 5.

7. A computer-readable medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the strip production method according to any one of claims 1 to 5.

8. A descaling system for descaling strip steel, comprising an uncoiler, a shearing machine, a scale breaker, a descaling unit and a coiler which are sequentially arranged along the advancing direction of the strip steel, characterized in that, The descaling system further includes the control module according to any one of claims 1 to 5.

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