Eighteen-high mill strip threading control method, device, electronic equipment and medium

Abstract

The present invention discloses a strip threading control method, device, electronic equipment, and medium for an 18-high rolling mill, which are applied to the 18-high rolling mill. The method comprises: performing a first strip threading on the strip based on a warping operation or a conventional operation, wherein the first strip threading is performed on the leading portion of the strip, wherein both the warping operation and the conventional operation are used to control the warping or buckling angle of the strip leading portion to be within a preset angle range; performing a second strip threading on the strip, wherein the second strip threading is performed on the trailing portion of the strip; and performing a third strip threading on the strip, wherein the third strip threading is performed on the entire strip. The method can effectively prevent the strip leading portion from excessive warping or buckling, thereby smoothly completing the strip threading process and improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of automation control technology, and in particular to a method, device, electronic equipment and medium for controlling strip threading of an 18-high rolling mill. Background Art

[0002] The 18-roller rolling mill mainly produces high-strength steel. When the raw material plate shape is poor, the strip head will be seriously warped after the uncoiler unwinds. The 18-roller rolling mill straightening machine is a non-driven five-roller straightening machine with two rollers on the top and three on the bottom. This type of straightening machine has excellent strip buckle control effect, but it cannot improve the warping of the strip head. The strip head is warped and cannot be threaded many times during the production process. It requires multiple people on site to use crowbars, hooks, etc. to press the strip head to thread the strip little by little. It takes 30 minutes to thread a roll of steel. In severe cases, the warping is serious and the strip head cannot be threaded. When reversing to unload, the strip head rebounds and injures the correction frame. After reversing to unload, the bundling straps need to be washed, the rolls need to be hoisted, and then the next roll is transported and uncoiled. Each time the strip head cannot be threaded and unloaded due to warping, it takes about 1 hour, which greatly affects the threading time and wastes manpower and material resources. Summary of the Invention

[0003] The embodiment of the present application provides an eighteen-roll mill tape threading control method, device, electronic equipment and medium, which can automatically control the tape head, tape tail and the entire tape threading, effectively avoiding excessive upward or downward warping of the tape head, thereby smoothly completing the tape threading process and improving production efficiency.

[0004] In a first aspect, the present invention provides the following technical solutions through an embodiment of the present invention:

[0005] A strip threading control method for an 18-high rolling mill is applied to the 18-high rolling mill, the method comprising: performing the first strip threading on the strip based on a head-warping operation or a conventional operation, the first strip threading being threading the head portion of the strip, wherein the head-warping operation and the conventional operation are both used to control the head-warping or buckling angle of the strip within a preset angle range; performing the second strip threading on the strip, the second strip threading being threading the tail portion of the strip; and performing the third strip threading on the strip, the third strip threading being threading the entire strip.

[0006] Preferably, the eighteen-roll rolling mill includes a uncoiler, a pinch roller, a straightening machine and a uncoiler pressure roller, the uncoiler is connected to the uncoiler pressure roller, and the uncoiler is connected to the pinch roller, the straightening machine and the pressure roller in sequence, and the method includes: when it is monitored that the strip head reaches the pinch roller, controlling the pinch roller to press up; when it is monitored that the strip head enters the target position of the straightening machine, controlling the target roller in the straightening machine to press down; jogging the uncoiler and the pinch roller so that the strip is sheathed between the pinch roller and the straightening machine; keeping the pinch roller in a pressed-down state, jogging the uncoiler and the uncoiler pressure roller so that the strip is sheathed between the uncoiler and the pinch roller, and monitoring whether the deformation of the strip meets the preset requirements, and if so, stopping the jogging operation.

[0007] Preferably, the eighteen-roll rolling mill includes a uncoiler, a pinch roller, a straightening machine and a uncoiler pressure roller, the uncoiler is connected to the uncoiler pressure roller, and the uncoiler is connected to the pinch roller, the straightening machine and the pressure roller in sequence, and the first strip threading of the strip is performed based on conventional operations, including: controlling the uncoiler pressure roller to press down to press the strip coil located on the uncoiler; controlling the uncoiler to reverse until the strip head of the strip reaches a preset position; controlling the uncoiler to rotate forward so that the strip head passes through the pinch roller and enters the straightening machine; when it is monitored that the strip head enters the target position of the straightening machine, controlling the lower roller of the straightening machine to be in a raised position, and controlling the single upper roller of the straightening machine to press down so that the tilting angle of the strip head is within a preset angle range.

[0008] Preferably, the straightening machine includes roller No. 1, roller No. 2 and roller No. 3. When it is monitored that the belt head enters the target position of the straightening machine, the target roller in the straightening machine is controlled to be pressed downward, including: when it is monitored that the belt head reaches between roller No. 1 and roller No. 3 of the straightening machine, the No. 2 roller of the straightening machine is controlled to be pressed downward, so that the belt head shows a downward buckling trend.

[0009] Preferably, the straightening machine includes an upper roller No. 1 and an upper roller No. 2. When it is monitored that the belt head enters the target position of the straightening machine, the lower roller of the straightening machine is controlled to be in a raised position, including: when it is monitored that the belt head reaches a position about 80 mm behind the upper roller No. 1 or the upper roller No. 2 of the straightening machine, the lower roller of the straightening machine is controlled to be in a raised position so that the belt head shows a tendency to curl up.

[0010] Preferably, the eighteen-high rolling mill also includes a No. 1 coiler and a coiler pressure roller, and the coiler pressure roller is connected to the No. 1 coiler. The second threading of the strip includes: swinging the tail of the strip to one side of the No. 1 coiler; controlling the coiler pressure roller to swing to one side of the No. 1 coiler, so that the coiler pressure roller presses the tail of the strip downward to flatten the warped part of the tail of the strip; controlling the core shaft of the No. 1 coiler to rotate in the opposite direction, so that the jaws of the No. 1 coiler drum are aligned with the tail of the strip; and jogging the strip into the jaws of the No. 1 coiler drum, so that the jaws bite into the strip to complete the second threading.

[0011] Preferably, the eighteen-roll mill also includes: No. 1 three-position pressure roller, No. 2 three-position pressure roller, slitting shear, brake roller, steering roller and No. 2 coiler, the No. 1 three-position pressure roller is connected to the straightening machine, the No. 1 three-position pressure roller is connected to the No. 2 coiler through the slitting shear, the brake roller, the steering roller and the No. 2 three-position pressure roller, and the third threading of the strip includes: closing the No. 1 three-position pressure roller, No. 2 three-position pressure roller and the brake roller, and adjusting the gap of the slitting shear according to the thickness of the strip to prepare for coiling; when it is detected that the strip penetrates the No. 1 three-position pressure roller, adjust the No. 1 three-position pressure roller to contact the steering roller and form a wrap angle; jog the strip forward to thread the strip so that the strip is completely inserted into the reel jaws of the No. 2 coiler; continue to jog the strip so that the strip is coiled two turns on the No. 2 coiler to complete the third threading.

[0012] In a second aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0013] An 18-high rolling mill strip threading control device, comprising:

[0014] a first strip threading control module, configured to perform the first strip threading on the strip based on a warping operation or a conventional operation, wherein the first strip threading is threading the strip head portion of the strip, wherein both the warping operation and the conventional operation are configured to control the warping or buckling angle of the strip head of the strip to be within a preset angle range;

[0015] A second strip threading control module is used to thread the strip for the second time, wherein the second strip threading is threading the tail portion of the strip;

[0016] The third strip threading control module is used to thread the strip for the third time, and the third strip threading is to thread the entire strip.

[0017] In a third aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0018] An electronic device comprises: a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method described in the first aspect when executing the program.

[0019] In a fourth aspect, the present invention provides the following technical solutions through an embodiment of the present invention:

[0020] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the method described in any one of the first aspects above.

[0021] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0022] The strip threading control method provided in an embodiment of the present invention can perform the first strip threading on the strip based on either a warping operation or a conventional operation. The first threading is performed on the leading portion of the strip. Both the warping operation and the conventional operation are used to control the warping angle or buckling angle of the strip head within a preset angle range, thereby preventing the strip head from tilting too high and improving the problem of excessive upward warping of the strip head. Subsequently, the second and third threadings are performed. This method can automatically control the strip head, tail, and overall threading. The proposed warping operation and conventional operation can effectively prevent the strip head from excessively warping or buckling, thereby smoothly completing the threading process and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A flow chart of a method for controlling strip threading in an 18-high rolling mill according to an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the first threading of the belt provided by an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the second threading process provided by an embodiment of the present invention;

[0027] Figure 4 A schematic diagram of the third threading process provided by an embodiment of the present invention;

[0028] Figure 5 A schematic structural diagram of a belt threading control device for an 18-high rolling mill according to an embodiment of the present invention;

[0029] Figure 6 A schematic structural diagram of an electronic device provided by an embodiment of the present invention.

[0030] Reference numerals:

[0031] 101- Uncoiler; 102- Pinch roller; 103- Straightening machine; 104- Uncoiler pressure roller; 105- No. 1 coiler; 106- No. 1 three-position pressure roller; 107- No. 2 three-position pressure roller; 108- Slitting shear; 109- Rolling mill; 110- Steering roller; 111- No. 2 coiler; 112- Brake roller. DETAILED DESCRIPTION

[0032] Traditional belt threading control: The second belt threading is similar to the first one. Due to excessive upward or downward buckling of the belt head, the belt threading cannot be completed smoothly, affecting production time.

[0033] Before threading for the third time, the raw material plate of the inner ring of the strip needs to be cut off to avoid the cost impact of re-coiling and cutting. After the penultimate pass is produced, the rolling mill stops, the roller gap is opened, the strip is coiled to the thickness of the penultimate pass, and the strip is cut by a slitting shear. Since it is the strip of the penultimate pass, it is severely work-hardened. A three-position pressure roller is used to press the strip head. After the pressure roller is opened, the strip returns to its original shape and a slightly upturned strip head cannot be made. During threading, not only will the strip head collide with the side guide gap of the threading guide plate, causing steel to pile up, but the strip head will also drill into the gap between the threading guide plate and the core shaft, causing threading failure. Since the operation panel is about 4 meters away from the site, the actual position of the strip head and the jaws cannot be seen during operation, and a person is required to direct it specifically. If necessary, a crowbar is used to pick up the strip head and insert it into the jaws, which greatly affects the threading time and wastes manpower.

[0034] The embodiment of the present application provides an eighteen-roll mill tape threading control method, device, electronic equipment and medium, which can automatically control the tape head, tape tail and the entire tape threading, effectively avoiding excessive upward or downward warping of the tape head, thereby smoothly completing the tape threading process and improving production efficiency.

[0035] The overall idea of ​​the technical solution of the embodiment of this application is as follows:

[0036] A strip threading control method for an 18-high rolling mill is applied to the 18-high rolling mill, the method comprising: threading the strip for the first time based on a head-warping operation or a conventional operation, the first threading being threading the head portion of the strip, wherein both the head-warping operation and the conventional operation are used to control the head-warping angle or the buckling angle of the strip within a preset angle range; threading the strip for the second time, the second threading being threading the tail portion of the strip; and threading the strip for the third time, the third threading being threading the entire strip.

[0037] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0038] In the first aspect, an embodiment of the present invention provides a method for controlling the threading of a strip in an 18-high rolling mill. Specifically, Figure 1 As shown, the method includes the following steps S101 to S103.

[0039] Step S101, threading the strip for the first time based on the warping operation or the conventional operation, wherein the first threading is threading the head portion of the strip, wherein the warping operation and the conventional operation are both used to control the warping or buckling angle of the head of the strip to be within a preset angle range.

[0040] In the specific implementation process, Figure 2 As shown, the 18-high rolling mill includes an uncoiler 101, a pinch roll 102, a straightening machine 103, and an uncoiler pressure roller 104. The uncoiler 101 is connected to the uncoiler pressure roller 104, and the uncoiler 101 is connected to the pinch roll 102, the straightening machine 103, and the uncoiler pressure roller 104 in sequence. The first strip threading is performed on the strip based on the warping operation, including:

[0041] When it is monitored that the strip head reaches the pinch roller 102, the pinch roller 102 is controlled to be pressed up; when it is monitored that the strip head enters the target position of the straightening machine 103, the target roller in the straightening machine 103 is controlled to be pressed down; the uncoiler 101 and the pinch roller 102 are operated in a momentary manner so that the strip is sheathed between the pinch roller 102 and the straightening machine 103; the pinch roller 102 is kept in a pressed-down state, and the uncoiler 101 and the uncoiler pressure roller 104 are operated in a momentary manner so that the strip is sheathed between the uncoiler 101 and the pinch roller 102, and whether the tilting angle of the strip head is within the preset angle range is monitored. If so, the inching operation is stopped.

[0042] The straightening machine 103 includes a first roller, a second roller, and a third roller. When the strip head is detected to have entered the target position of the straightening machine 103, the target rollers in the straightening machine 103 are controlled to press downward. This may include: when the strip head is detected to have reached between the first and third rollers of the straightening machine 103, the second roller of the straightening machine 103 is controlled to press downward, causing the strip head to buckle downward. The buckle angle is within a preset range.

[0043] Specifically, this application adopts the method of first making the warped head into a buckle head, that is, when uncoiling, not only the steel type is considered to make the strip head, but also the actual situation. For coils with severe warping, the strip head is first made into a buckle head, the pinch roller 102 is opened, and the uncoiler 101 is started to uncoil. When the strip head reaches the pinch roller 102, the pinch roller 102 is pressed.

[0044] Pass the strip head through the straightening machine 103 between the 1# roller and the 3# roller, press down with the 2# roller, press it to the bottom and open it after a few seconds. At this time, the strip head will be slightly buckled. Do not open the straightening machine 103, and start the uncoiler 101 and the pinch roller 102. A small sleeve will be raised between the pinch roller 102 and the straightening machine 103. After a while, the small sleeve will disappear by itself (the strip has slipped to the strip guide plate of the uncoiler 101), and then start a small sleeve. After the strip is obviously deformed, the strip head is processed.

[0045] In order to make the strip steel have a tendency to buckle down near the head, and to prevent the strip steel from being warped as a whole due to excessive stress in the part behind the head, after the strip head part is processed, the pinch roller 102 is kept in a pressed down state, and the single-point uncoiler 101 and the uncoiler pressure roller 104 are set between the uncoiler 101 and the pinch roller 102. After the strip steel has obvious deformation, the strip steel behind the head is processed.

[0046] In a specific embodiment, the 18-high rolling mill includes an uncoiler 101, a pinch roll 102, a straightening machine 103, and an uncoiler pressure roller 104. The uncoiler 101 is connected to the uncoiler pressure roller 104, and the uncoiler 101 is connected to the pinch roll 102, the straightening machine 103, and the uncoiler pressure roller 104 in sequence. The first strip threading is performed based on conventional operations, including:

[0047] Control the uncoiler pressure roller 104 to press down to press the strip steel coil located on the uncoiler 101; control the uncoiler 101 to reverse until the strip head reaches the preset position; control the uncoiler 101 to rotate forward so that the strip head passes through the pinch roller 102 and enters the straightening machine 103; when it is monitored that the strip head enters the target position of the straightening machine 103, control the lower roller of the straightening machine 103 to be in the raised position, and control the single upper roller of the straightening machine 103 to press down so that the tilting angle of the strip head is within the preset angle range.

[0048] Among them, the straightening machine 103 includes an upper roller No. 1 and an upper roller No. 2. When it is monitored that the belt head enters the target position of the straightening machine 103, the lower roller of the straightening machine 103 is controlled to be in a raised position, including: when it is monitored that the belt head reaches the position about 80 mm after the upper roller No. 1 or the upper roller No. 2 of the straightening machine 103, the lower roller of the straightening machine 103 is controlled to be in a raised position, so that the belt head shows a tendency to curl up.

[0049] Specifically, before controlling the uncoiler pressure roller 104 to press down, the steel coil needs to be loaded into the uncoiler 101 and placed at the center of the reel, ensuring that the steel coil trolley drops to the lowest position to avoid scratches during threading. Select the strip centering device CPC mode as the center position, press the uncoiler pressure roller 104 down to press the steel coil, and reverse the uncoiler 101 until the strip head reaches the preset position, for example: the preset position can be the position where the strip head points to 12 o'clock; press the strip threading guide plate to move it below the strip head; wherein, the telescopic guide plate of the strip threading guide plate can also be controlled to extend according to actual conditions. Rotate the uncoiler 101 forward, and the strip head passes through the uncoiler and the pinch roller 102. After passing through the pinch roller 102, the strip head reaches a position about 80mm behind the 1# upper roller or 2# upper roller of the straightening machine (straightening machine 103). Lift the lower roller of the straightening machine 103 to the "UP" position, then press down on one upper roller to adjust the tape head to a tilt angle within a preset range, for example, 20-30 degrees. It should be noted that the tilt angle can be adjusted by adjusting the amount the upper roller is pressed down. Then lift the upper roller.

[0050] Step S102 : threading the strip for the second time, wherein the second threading is threading the tail portion of the strip.

[0051] In a specific embodiment, Figure 3 As shown, the eighteen-high rolling mill also includes a No. 1 coiler 105 and a coiler pressure roller (not shown in the figure), and the second strip threading of the strip may include: swinging the tail of the strip to one side of the No. 1 coiler 105; controlling the coiler pressure roller to swing to one side of the No. 1 coiler 105, so that the coiler pressure roller presses the strip tail downward to flatten the warped part of the strip tail; controlling the core shaft of the No. 1 coiler 105 to rotate in the opposite direction, so that the reel jaws of the No. 1 coiler 105 are aligned with the strip tail; and momentarily driving the strip into the reel jaws of the No. 1 coiler 105 so that the jaws bite into the strip to complete the second strip threading.

[0052] Specifically, the strip tail is swung to one side of coiler No. 105. The pressure roller of the oscillating coiler is swung rightward and pressed down completely to flatten the warped portion of the strip tail. The mandrel of coiler No. 105 is rotated in the opposite direction, and the jaws of coiler No. 105 are aligned with the strip tail. The strip is then fed into the jaws, causing them to engage, completing the second threading.

[0053] Step S103 , threading the steel strip for a third time, wherein the third threading is threading the entire steel strip.

[0054] In a specific embodiment, Figure 4As shown, the 18-high rolling mill further includes: a No. 1 three-position pressure roller 106, a No. 2 three-position pressure roller 107, a slitting shear 108, a brake roller 112, a steering roller 110 and a No. 2 coiler 111. The No. 1 three-position pressure roller 106 is connected to the straightening machine 103. The No. 1 three-position pressure roller 106 is connected to the No. 2 coiler 111 through the slitting shear 108, the brake roller 112, the steering roller 110, and the No. 2 three-position pressure roller 107 to perform a third strip threading on the strip, including:

[0055] Close the No. 1 three-position pressure roller 106, the No. 2 three-position pressure roller 107 and the brake roller 112, and adjust the gap of the slitting shear 108 according to the thickness of the strip to prepare for coiling; when it is detected that the strip has penetrated the No. 1 three-position pressure roller 106, adjust the No. 1 three-position pressure roller 106 to contact the steering roller 110 and form a wrap angle; jog the strip forward so that the strip is completely inserted into the reel jaws of the No. 2 coiler 111; continue to jog the strip so that the strip is coiled twice on the No. 2 coiler 111, completing the third strip threading.

[0056] Specifically, first control and close the three-position pressure rollers on both sides (i.e., the No. 1 three-position pressure roller 106 and the No. 2 three-position pressure roller 107), and close the right brake roller 112 to prevent the steel from slipping after shearing and causing the coil to loosen. Adjust the gap between the slitting shears 108 according to the thickness of the strip. Unload the small coil after shearing and prepare for coiling. When the group moves the strip through the No. 1 three-position pressure roller 106, the No. 1 three-position pressure roller 106 is swung to the "BEND" position and pressed down, so that the No. 1 three-position pressure roller 106 contacts the steering roller 110 and forms a wrap angle. At this time, the group moves the strip forward, and an upward bend will be rolled out of the strip head. The upward bend will advance through the gap between the strip guide and the No. 2 coiler 111 mandrel and enter the jaws. Continue to move the group to raise a small sleeve in front of the No. 2 coiler 111 mandrel to ensure that the strip is completely inserted into the jaws. The No. 2 coiler 111 mandrel expands, and the group moves the coils twice, and the strip is threaded.

[0057] The above method completely solves the problem of being unable to thread the belt. It not only reduces the labor intensity of the personnel, but also greatly saves threading time and avoids the material throwing caused by the warping of the belt head. If each occurrence affects 30 minutes and occurs 5 times per month, 150 minutes can be saved per month, and 4 more coils of steel (about 90 tons) can be produced per month. If calculated as 12 months per year, the annual benefit of saving downtime is calculated as follows: 90 tons × 12 months × 300 yuan / t = 324,000 yuan. If one coil cannot be put into production every two months, resulting in rust and scrapping, and each coil is 20 tons, the annual benefit of reducing downgraded products is calculated as: downgraded output × number of coils × ton of steel benefit = 20 tons × 6 × 6,000 yuan / t = 720,000 yuan, which can create a cumulative benefit of 324,000 + 720,000 yuan.

[0058] It should be noted that the belt threading control method provided in this application is also applicable to the same type of units.

[0059] To sum up, the eighteen-roll mill belt threading control method provided by the embodiment of the present invention can automatically control the belt head, belt tail and the whole belt threading, effectively avoiding excessive upward or downward warping of the belt head, thereby smoothly completing the belt threading process and improving production efficiency.

[0060] In the second aspect, based on the same inventive concept, this embodiment provides an 18-high rolling mill strip threading control device, such as Figure 5 Shown, including:

[0061] The first strip threading control module 401 is used to perform the first strip threading on the strip based on the warping operation or the conventional operation. The first strip threading is to thread the strip head portion. The warping operation and the conventional operation are both used to control the warping of the strip head within a preset angle range.

[0062] The second strip threading control module 402 is used to thread the strip for the second time, wherein the second strip threading is to thread the tail portion of the strip;

[0063] The third strip threading control module 403 is used to thread the strip for the third time. The third strip threading is to thread the entire strip.

[0064] As an optional embodiment, the 18-high rolling mill includes an uncoiler, a pinch roller, a straightening machine, and an uncoiler pressure roller. The uncoiler is connected to the uncoiler pressure roller, and the uncoiler is connected to the pinch roller, the straightening machine, and the uncoiler pressure roller in sequence. The first threading control module 401 is specifically used to:

[0065] When it is monitored that the strip head reaches the pinch roller, the pinch roller is controlled to be pressed up; when it is monitored that the strip head enters the target position of the straightening machine, the target roller in the straightening machine is controlled to be pressed down; the uncoiler and the pinch roller are operated in a jog manner so that the strip is sheathed between the pinch roller and the straightening machine; the pinch roller is kept in a pressed-down state, and the uncoiler and the uncoiler pressure roller are operated in a jog manner so that the strip is sheathed between the uncoiler and the pinch roller, and whether the warping angle of the strip head is within the preset angle range is monitored. If so, the jog operation is stopped.

[0066] As an optional embodiment, the 18-high rolling mill includes an uncoiler, a pinch roller, a straightening machine, and an uncoiler pressure roller. The uncoiler is connected to the uncoiler pressure roller, and the uncoiler is connected to the pinch roller, the straightening machine, and the uncoiler pressure roller in sequence. The first threading control module 401 is specifically used to:

[0067] Control the uncoiler pressure roller to press down to press the strip steel coil on the uncoiler; control the uncoiler to reverse until the strip head reaches the preset position; control the uncoiler to rotate forward so that the strip head passes through the pinch roller and enters the straightening machine; when it is monitored that the strip head enters the target position of the straightening machine, control the lower roller of the straightening machine to be in the raised position, and control the single upper roller of the straightening machine to press down so that the warping angle of the strip head is within the preset angle range.

[0068] As an optional embodiment, the straightening machine includes roller No. 1, roller No. 2 and roller No. 3, and the first belt threading control module 401 is specifically used to: when it is monitored that the strip head reaches between roller No. 1 and roller No. 3 of the straightening machine, control the No. 2 roller of the straightening machine to press downward so that the strip head shows a downward buckling trend.

[0069] As an optional embodiment, the straightening machine includes an upper roller No. 1 and an upper roller No. 2, and the first belt threading control module 401 is specifically used to: when it is monitored that the belt head reaches a position about 80 mm behind the upper roller No. 1 or the upper roller No. 2 of the straightening machine, control the lower roller of the straightening machine to be in a raised position, so that the belt head tends to curl up.

[0070] As an optional embodiment, the eighteen-high rolling mill also includes a No. 1 coiler and a coiler pressure roller. The second strip threading control module 402 is specifically used to: swing the tail of the strip to one side of the No. 1 coiler; control the coiler pressure roller to swing to one side of the No. 1 coiler, so that the coiler pressure roller presses down on the tail of the strip to flatten the warped part of the tail of the strip; control the core shaft of the No. 1 coiler to rotate in the opposite direction, so that the jaws of the No. 1 coiler drum are aligned with the tail of the strip; and jog the strip into the No. 1 coiler drum jaws so that the jaws bite into the strip.

[0071] As an optional embodiment, the 18-high rolling mill further includes: a No. 1 three-position pressure roller, a No. 2 three-position pressure roller, a slitting shear, a brake roller, a steering roller, and a No. 2 coiler. The No. 1 three-position pressure roller is connected to the straightening machine, and the No. 1 three-position pressure roller is connected to the No. 2 coiler through the slitting shear, the brake roller, the steering roller, and the No. 2 three-position pressure roller. The third threading control module 403 is specifically used to:

[0072] Close the No. 1 three-position pressure roller, No. 2 three-position pressure roller and brake roller, and adjust the slitting shear gap according to the thickness of the strip to prepare for coiling; when it is detected that the strip has penetrated the No. 1 three-position pressure roller, adjust the No. 1 three-position pressure roller to contact the steering roller and form a wrap angle; jog the strip forward so that the strip is completely inserted into the reel jaws of the No. 2 coiler; continue to jog the strip so that the strip is coiled twice on the No. 2 coiler, completing the third strip threading.

[0073] The above modules can be implemented by software codes, in which case the above modules can be stored in the memory of the control device. The above modules can also be implemented by hardware such as integrated circuit chips.

[0074] An embodiment of the present invention provides an 18-high rolling mill strip threading control device, the implementation principle and technical effects of which are the same as those of the aforementioned method embodiment. For the sake of brief description, for matters not mentioned in the device embodiment, reference can be made to the corresponding contents in the aforementioned method embodiment.

[0075] In a third aspect, based on the same inventive concept, this embodiment provides an electronic device 500, such as Figure 6 As shown, it includes: a memory 501, a processor 502 and a computer program 503 stored in the memory and capable of running on the processor. When the processor 502 executes the program, the steps of the eighteen-high rolling mill threading control method described in the first aspect are implemented.

[0076] In the fourth aspect, based on the same inventive concept, this embodiment provides a non-temporary computer-readable storage medium. When the instructions in the storage medium are executed by the processor of the electronic device 500, the electronic device 500 is able to execute an eighteen-roll mill threading control method, including the steps of any one of the methods described in the first aspect above.

[0077] Other embodiments of the present invention will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.

[0078] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0079] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A method for controlling strip threading in an 18-high rolling mill, characterized in that: Applied to an 18-high rolling mill, the 18-high rolling mill including a straightening machine, the method comprising: Performing a first strip threading on the strip based on a warping operation or a conventional operation, wherein the first strip threading is threading the strip head portion of the strip, wherein both the warping operation and the conventional operation are used to control the warping or buckling angle of the strip head to be within a preset angle range, wherein the preset angle range is 20 to 30 degrees; Performing a second threading on the strip steel, wherein the second threading is threading the tail portion of the strip steel; Performing a third threading on the steel strip, wherein the third threading is performed on the entire steel strip; The straightening machine includes a No. 1 roller, a No. 2 roller, and a No. 3 roller, and performs the first strip threading on the strip based on the warping operation, including: when it is detected that the strip head reaches between the No. 1 roller and the No. 3 roller of the straightening machine, the No. 2 roller of the straightening machine is controlled to press downward, so that the strip head shows a downward buckling trend; Alternatively, the straightening machine includes an upper roller No. 1 and an upper roller No. 2, and the strip is threaded for the first time based on conventional operations, including: when it is monitored that the strip head reaches a position 80 mm behind the upper roller No. 1 or the upper roller No. 2 of the straightening machine, the lower roller of the straightening machine is controlled to be in a raised position, so that the strip head tends to curl up.

2. The method according to claim 1, wherein The 18-high rolling mill includes an uncoiler, a pinch roll, a straightening machine, and an uncoiler pressure roller, wherein the uncoiler is connected to the uncoiler pressure roller, and the uncoiler is sequentially connected to the pinch roll, the straightening machine, and the uncoiler pressure roller. The first strip threading of the strip is performed based on the warping operation, including: When it is detected that the strip head reaches the pinch roller, the pinch roller is controlled to press upward; When it is detected that the tape head enters the target position of the straightening machine, the target roller in the straightening machine is controlled to be pressed downward; Inching the uncoiler and the pinch rollers so that the strip is coiled between the pinch rollers and the straightening machine; Keep the pinch roller in a pressed-down state, and jog the uncoiler and the uncoiler pressure roller so that the strip is sheathed between the uncoiler and the pinch roller, and monitor whether the head tilting angle of the strip is within a preset angle range. If so, stop the jog operation.

3. The method according to claim 1, wherein The 18-high rolling mill includes an uncoiler, a pinch roll, a straightening machine, and an uncoiler pressure roller. The uncoiler is connected to the uncoiler pressure roller, and the uncoiler is sequentially connected to the pinch roll, the straightening machine, and the uncoiler pressure roller. The first strip threading of the strip is performed based on conventional operations, including: Controlling the uncoiler pressure roller to press down to press the strip steel coil located on the uncoiler; Controlling the uncoiler to reverse until the strip head of the strip reaches a preset position; Controlling the uncoiler to rotate forward so that the strip head passes through the pinch roller and enters the straightening machine; When it is monitored that the tape head enters the target position of the straightening machine, the lower roller of the straightening machine is controlled to be in a raised position, and the single upper roller of the straightening machine is controlled to be pressed down, so that the tilting angle of the tape head is within a preset angle range.

4. The method according to any one of claims 2 or 3, wherein The 18-high rolling mill further includes a No. 1 coiler and a coiler pressure roller. The second threading of the strip steel includes: Throwing the tail of the strip to one side of the No. 1 coiler; Controlling the coiler pressure roller to swing toward one side of the No. 1 coiler so that the coiler pressure roller presses downward on the strip tail to flatten the warped portion of the strip tail; Controlling the core shaft of the No. 1 coiler to rotate in the opposite direction so that the reel jaws of the No. 1 coiler are aligned with the tail of the strip; The strip is moved into the No. 1 coiler drum jaw in a jog motion so that the No. 1 coiler drum jaw bites into the strip to complete the second strip threading.

5. The method according to claim 4, wherein The 18-high rolling mill further includes: a No. 1 three-position pressure roller, a No. 2 three-position pressure roller, a slitting shear, a brake roller, a steering roller, and a No. 2 coiler. The No. 1 three-position pressure roller is connected to the straightening machine, and the No. 1 three-position pressure roller is connected to the No. 2 coiler through the slitting shear, the brake roller, the steering roller, and the No. 2 three-position pressure roller. The third threading of the strip includes: Close the No. 1 three-position pressure roller, the No. 2 three-position pressure roller and the brake roller, and adjust the gap of the slitting shear according to the thickness of the strip to prepare for coiling; When it is detected that the strip steel has penetrated the No. 1 three-position pressing roller, the No. 1 three-position pressing roller is adjusted to contact with the steering roller and form a wrap angle; Inching the strip forward so that the strip is completely inserted into the reel jaws of the No. 2 coiler; Continue to jog the strip so that the strip is coiled twice on the No. 2 coiler, completing the third strip threading.

6. A device for implementing the method according to any one of claims 1 to 5, characterized in that: include: a first strip threading control module, configured to perform a first strip threading on the strip based on a warping operation or a conventional operation, wherein the first strip threading is threading the leading portion of the strip, wherein both the warping operation and the conventional operation are configured to control the warping or buckling angle of the strip leading portion to be within a preset angle range, wherein the preset angle range is 20 to 30 degrees; A second strip threading control module is used to thread the strip for the second time, wherein the second strip threading is threading the tail portion of the strip; a third strip threading control module, configured to thread the strip for the third time, wherein the third strip threading is performed on the entire strip; The straightening machine includes a No. 1 roller, a No. 2 roller, and a No. 3 roller, and performs the first strip threading on the strip based on the warping operation, including: when it is detected that the strip head reaches between the No. 1 roller and the No. 3 roller of the straightening machine, the No. 2 roller of the straightening machine is controlled to press downward, so that the strip head shows a downward buckling trend; Alternatively, the straightening machine includes an upper roller No. 1 and an upper roller No. 2, and the strip is threaded for the first time based on conventional operations, including: when it is monitored that the strip head reaches a position 80 mm behind the upper roller No. 1 or the upper roller No. 2 of the straightening machine, the lower roller of the straightening machine is controlled to be in a raised position, so that the strip head tends to curl up.

7. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method according to any one of claims 1 to 5 when executing the computer program executable on the processor.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

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