A control method and device for pre-positioning a front guide plate of a flying shear in strip rolling
By adding a photoelectric tube HMD02 and a front-mounted CSG module at the guide plate exit, the problem of limited movement of the flying shear front guide plate was solved, enabling the early start of the flying shear front guide plate, avoiding the blockage of the finishing mill feed, and improving the strip rolling efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BAOSHAN IRON & STEEL CO LTD
- Filing Date
- 2022-07-04
- Publication Date
- 2026-05-19
AI Technical Summary
During strip rolling, the movement of the flying shear guide plate is limited by whether the flying shear has completed tail cutting. This results in the inability to move in time when the width specification changes, causing the finishing mill feed to be blocked, slowing down the rolling rhythm, and potentially leading to equipment failure.
A photocell HMD02 is added at the guide plate exit, and a pre-set CSG module is added to the finishing mill TDC control unit. The pre-set CSG program block controls the flying shear front guide plate movement in advance, independently of the flying shear tail completion state, so as to realize the guide plate is in place in advance.
The advance action time of the flying shear guide plate avoids the blockage of the finishing mill feed caused by incomplete action, reduces the waiting time of the strip at the finishing mill entrance, and improves the rolling rhythm.
Smart Images
Figure CN117380745B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of strip steel finishing technology, and more specifically, to a control method and device for positioning the flying shear guide plate in the front of the strip steel rolling process. Background Technology
[0002] In the strip rolling process, the flying shear guide plate of 2050 hot rolling is usually arranged in the finishing mill entrance area, before the flying shear program. It is used to accurately guide the rough-rolled strip into the flying shear program for finishing rolling, and finally, the flying shear program completes the head and tail shearing of the rough-rolled strip. The existing technology provides a schematic diagram of the on-site equipment layout and control structure of the flying shear guide plate as follows: Figure 1 As shown, where, Figure 1 The specific meanings and uses of the Chinese abbreviations are as follows: HMD01: Finishing mill inlet photocell, the starting point of the flying shear guide plate, returns signal 1 to the TDC control unit when strip passes through its detection point; CS: Flying shear, used to perform head and tail shearing of roughing mill incoming material; L2: 2050 hot rolling process control computer, used for production line process control, and sends set values to the finishing mill TDC control unit; CSG: Finishing mill TDC guide plate control program block, internally containing existing technology programs for controlling guide plate movement; CSH: Finishing mill TDC flying shear control program block, used for flying shear control and sending opening width set values to the guide plate; SDH: Finishing mill TDC set value processing program block, used to receive the width setting sent by L2 and respond to CSH requests to send the width setting to the CSH program block.
[0003] In the existing technology, the control process of the flying shear front guide plate is described as follows: The finishing mill TDC control unit receives the width setting value issued from L2, executes the corresponding control program, and sends the guide plate opening command to the guide plate drive unit (guide plate transmission device) to either increase or decrease the opening value. The drive unit drives the guide plate motor to move, and the motor controls the guide plate to move to the set value according to the drive command through the gearbox. The position encoder installed at the tail end of the guide plate motor feeds back the actual position information of the guide plate to the control unit. When the guide plate opening reaches the set position, the guide plate stops moving, and the finishing mill allows steel to enter.
[0004] In the existing technology, the three program blocks related to guide plate control in the finishing mill TDC control unit are SDH, CSH, and CSG, and their control logic flowchart is as follows: Figure 2As shown, firstly, the 2050 hot rolling process control computer L2 sends the strip width setting to the finishing mill TDC control unit when the strip head exits the roughing mill R4 mill. The SDH in the TDC control unit receives and stores the strip width setting. After the CSH module sends a width setting request, it sends the width setting value to the CSH module. Secondly, after the CSH controls the flying shear to complete the current strip tail cutting action, it requests the width setting of the next strip from the SDH. After receiving the setting, it sends this value as the guide plate opening width setting to the CSG module. Then, if the head of the next strip does not enter the guide plate area, i.e., HMD01 = 0, after receiving the opening width setting sent by the CSH, the CSG module sends an instruction to the transmission unit to move the guide plate larger or smaller. If the head of the next strip enters the finishing mill area, i.e., HMD01 = 1, then the steel feed is blocked. Finally, after receiving the instruction, the transmission unit controls the motor to move the guide plate to the set position through the gearbox transmission. The control unit receives feedback on the actual position of the guide plate. When the guide plate moves to the set position, the strip is allowed to enter the finishing rolling area; otherwise, the steel feeding is blocked.
[0005] However, controlling the flying shear front guide plate according to the above operating procedure may have the following problems:
[0006] 1) With the improvement of the automation capability of 2050 hot rolling, it is allowed that two strips exist in the finishing mill entrance area at the same time. That is, the next strip can enter HMD01 before the end of the current strip is cut off. When the strip width specification changes, the opening width of the guide plate needs to be changed accordingly. However, since the end of the current strip has not been cut off, CSH has not requested a new width setting from SDH, which causes the flying shear front guide plate to be unable to move in time, causing the finishing mill to be blocked and slowing down the rolling rhythm.
[0007] 2) When the width of the current strip varies greatly, even if there are no two strips in the finishing mill entrance area, the CSH will send the guide plate opening width setting to the CSG after the flying shear has finished cutting the tail of the current strip. This will be too late, and the flying shear guide plate will not have enough time to move. As a result, the flying shear guide plate will not be able to reach the set position within the reserved time, which will block the finishing mill entry and slow down the rolling rhythm.
[0008] 3) If the lower strip with a larger width is moving too fast and cannot respond to the strip blocking command to slow down, the lower strip will rush into the flying shear front guide plate area and get stuck in the flying shear front guide plate that has not been opened to the correct position, damaging the mechanical equipment on site and causing a shutdown. Summary of the Invention
[0009] The purpose of this invention is to provide a control method and device for the forward positioning of the flying shear guide plate in strip rolling, so that the movement of the flying shear guide plate is freed from the limitation of whether the flying shear has completed the cutting of the current strip tail, realizing the advance movement of the flying shear guide plate. This ensures that when the width specification of the next strip changes, the flying shear guide plate can move into position in advance according to the required opening degree, avoiding the problem of steel entry blockage in the finishing rolling area, eliminating the technical problem of equipment failure and downtime caused by the strip getting stuck in the flying shear guide plate area, thereby improving the rolling rhythm of the production line.
[0010] To achieve the above objectives, the present invention adopts the following technical solution:
[0011] At the guide plate exit, a new phototube HMD02 is added, and a pre-control CSG module is added to the finishing mill TDC control unit.
[0012] As one aspect of the present invention, a method for controlling the forward positioning of the flying shear guide plate in strip rolling is provided, comprising the following steps:
[0013] When the strip head exits the roughing R4 mill, S1.L2 sends the strip width setting to the finishing TDC control unit;
[0014] S2. The TDC control unit of the finishing mill controls the flying shear front guide plate according to the newly added logic control process, and sends the generated guide plate opening width setting value to CSG;
[0015] After receiving the set value, S3.CSG controls the flying shear guide plate to move to the set position before the head of the lower strip reaches HMD01, allowing the lower strip to enter the finishing rolling area; otherwise, it blocks the steel feed.
[0016] As a control method for the pre-positioning of the flying shear guide plate in strip rolling according to the above-mentioned aspect of the present invention, the newly added logic control process in S2 includes the following specific steps:
[0017] S21. Add a front-end CSG program block to the finishing mill TDC control unit. The front-end CSG receives the strip width setting and is used for subsequent flying shear front guide plate control.
[0018] S22. In the preceding CSG program block, compare the current strip width setting with the newly read next strip width setting to determine the direction of the guide plate's movement.
[0019] S23. Set an enable switch and determine whether to send the previous CSG setting value to the CSG according to the logic rules of the enable switch.
[0020] As a control method for the forward positioning of the flying shear guide plate in strip rolling according to the above-mentioned aspect of the present invention, S21 includes the following steps:
[0021] S211. Despite the addition of a front-end CSG, the existing connection for CSH to send setting values to CSG is still retained and used only for monitoring and comparison in the PDA;
[0022] S212. In actual operation, the time when the CSH sends the set value to the CSG is later than or equal to the time when the preceding CSG sends the set value, and the set value sent by the preceding CSG plays a major role.
[0023] As a control method for the forward positioning of the flying shear guide plate in strip rolling according to the above-mentioned aspect of the present invention, S22 includes the following steps:
[0024] S221. When the width of the next strip is greater than the current strip width, the flying shear front guide plate needs to move in the direction of increasing the opening;
[0025] S222. When the width of the next strip is less than the current strip width, the flying shear guide plate needs to move in the direction where the opening becomes smaller.
[0026] As a control method for the forward positioning of the flying shear guide plate in strip rolling according to the above-mentioned aspect of the present invention, S221 includes the following steps:
[0027] S2211. When the time it takes for the tail of the monitored strip to leave HMD01 is more than 3 seconds, the front CSG sends the strip width setting value of the increased lower block to the CSG as the guide plate opening width setting value.
[0028] S2212. If the time it takes for the tail of the monitored strip to leave HMD01 is less than 3 seconds, continue monitoring until the time reaches more than 3 seconds.
[0029] As a control method for the forward positioning of the flying shear guide plate in strip rolling according to the above-mentioned aspect of the present invention, S222 includes the following steps:
[0030] S2221. If the monitoring strip tail leaves the phototube HMD02, the front CSG sends the strip width setting of the smaller lower block to the CSG as the guide plate opening width setting value.
[0031] S2222. If the tail of the strip has not left the phototube HMD02, continue monitoring until the strip leaves HMD02.
[0032] As a control method for the forward positioning of the flying shear guide plate in strip rolling according to the above-mentioned aspect of the present invention, S23 includes the following specific steps:
[0033] S231. When the enable switch is equal to 1, the front CSG will send the generated guide plate opening width setting value to the CSG;
[0034] S232. When the enable switch is equal to 0, the control method of the flying shear front plate in the prior art is switched to the method of the front CSG, and the front CSG does not send settings to the CSG.
[0035] As another aspect of the present invention, a control device for the front guide plate of a flying shear in strip rolling is provided, including a finishing mill inlet phototube HMD01, a flying shear CS, a finishing mill control computer L2, a CSG program block, a CSH program block and an SDH program block disposed in the finishing mill TDC control unit, and a phototube HMD02 disposed at the exit of the flying shear front guide plate.
[0036] As a control device for the pre-mounted flying shear guide plate in strip rolling as described above, the present invention further includes a pre-mounted CSG program block disposed in the finishing mill TDC control unit.
[0037] By adopting the above technical solution, the present invention has the following advantages:
[0038] 1. By adding a new pre-processing CSG block, after the hot rolling process control computer L2 issues the setting value of the strip width of the next block, the setting value can be read directly, so that it is no longer limited by whether the current strip tail cutting is completed.
[0039] 2. The newly added photoelectric tube HMD02 enables the detection of whether the tail of the strip has left the guide plate area, creating conditions for the pre-control of the flying shear guide plate.
[0040] 3. When the width of the next strip is greater than the width of the current strip: After receiving the opening width setting of the next strip from the front CSG, the flying shear guide plate will immediately move to the set position as long as the tail of the current strip leaves HMD01 for more than 3 seconds. The start time of the flying shear guide plate is no longer affected by whether the tail of the current strip has been cut.
[0041] 4. When the width of the next strip is less than the width of the current strip: After receiving the opening width setting of the next strip from the front CSG, the flying shear guide plate will immediately move to the set position as soon as the tail of the current strip leaves HMD02. The start time of the flying shear guide plate is no longer affected by whether the tail of the current strip has been cut.
[0042] 5. The control method for the front-mounted flying shear guide plate in strip rolling is equipped with an enable switch, which can switch between the control method for the front-mounted flying shear guide plate and the control method in the prior art, making it easier to compare and more functional.
[0043] 6. In the control method of advancing the flying shear guide plate in strip rolling, the starting time of the flying shear guide plate is significantly earlier than that of the control method in the prior art, realizing the early start of the flying shear guide plate, effectively avoiding the blockage of the finishing mill entry caused by the flying shear guide plate not moving in place, reducing the waiting time of the strip at the finishing mill entrance, and improving the rolling rhythm of the strip. Attached Figure Description
[0044] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.
[0045] Figure 1 This is a schematic diagram of the equipment layout and control structure of the existing flying shear front guide plate;
[0046] Figure 2 This is a flowchart of the control logic of the flying shear front guide plate in the existing technology;
[0047] Figure 3 This is a schematic diagram of the equipment layout and control structure of the flying shear front guide plate of the present invention;
[0048] Figure 4 This is a flowchart of the control method for the forward placement of the flying shear guide plate in strip rolling according to the present invention;
[0049] Figure 5 This is a screenshot of the width setting of the flying shear guide plate during large movements in the monitoring data of the 2050 precision rolling PDA in this embodiment of the invention;
[0050] Figure 6 This is a screenshot of the width setting of the flying shear guide plate when it moves to a smaller position in the monitoring data of the 2050 precision rolling PDA in this embodiment of the invention. Detailed Implementation
[0051] The technical solution of the present invention will be specifically described below with reference to the accompanying drawings. The detailed features and advantages of the present invention are described in detail in the specific embodiments. The content is sufficient to enable any person skilled in the art to understand the technical content of the present invention and implement it accordingly. Based on the specification, claims and drawings disclosed in this specification, those skilled in the art can easily understand the related objects and advantages of the present invention.
[0052] This invention provides a control device for positioning the front guide plate of a flying shear in strip rolling. The schematic diagram illustrates the equipment layout and control structure of the flying shear front guide plate in the prior art. Figure 1Modifications were made to the existing design. A photoelectric tube HMD02 was added at the exit of the flying shear CS guide plate, specifically 3850mm before the flying shear. When strip steel passes its detection point, it sends signal 1 to the finishing mill TDC control unit to detect whether the strip steel has left the flying shear guide plate area. The specific details of the control device for the flying shear guide plate in strip rolling of this invention are as follows: Figure 3 As shown.
[0053] In addition, the control device for the pre-positioning of the flying shear guide plate in strip rolling of the present invention adds a pre-positioning control program block for the flying shear guide plate in the finishing mill TDC control unit, named Pre-positioning CSG. This pre-positioning CSG program block controls the pre-positioning of the flying shear guide plate, allowing it to receive the required guide plate opening width setting value for the next strip in advance. Then, it starts in advance according to the control method for pre-positioning the flying shear guide plate in strip rolling, avoiding steel feed blockage caused by incomplete flying shear guide plate movement. Specifically, as follows... Figure 3 As shown, in addition, the meanings of abbreviations such as HMD01, L2, SDH, CSH, and CSG are consistent with those in existing technologies. Figure 1 The meaning and usage are the same, and if mentioned below, they all have the same meaning and will not be repeated.
[0054] This invention also provides a control method for the forward positioning of the flying shear guide plate in strip rolling, specifically as follows: Figure 4 As shown, it includes the following steps:
[0055] When the head of the strip exits the roughing mill R4, the S1.2050 hot rolling process control computer L2 sends the strip width setting to the finishing mill TDC control unit; this step is the same as the control logic step of the flying shear guide plate in the prior art.
[0056] S2. The TDC control unit of the finishing mill controls the flying shear front guide plate according to the newly added logic control process, and sends the generated guide plate opening width setting value to CSG;
[0057] Among them, the newly added logic control flow in S2 is as follows: Figure 4 As shown in area B within the Chinese box, the specific steps include:
[0058] S21. Add a front-end CSG program block to the finishing mill TDC control unit. The front-end CSG receives the strip width setting and is used for subsequent flying shear front guide plate control.
[0059] S21 includes the following steps:
[0060] S211. To facilitate the comparison between area B in the control method block of the flying shear front guide plate in strip rolling of the present invention and area A in the control method block of the flying shear front guide plate in the prior art, although the present invention adds a front CSG, the CSH sends the set value to the CSG without disconnection. This connection is retained only for monitoring and comparison in the PDA.
[0061] S212. In actual operation, the time when the CSH sends the setting value to the CSG in the prior art is later than or at the earliest equal to the time when the CSG sends the setting value in the present invention, and the setting value sent by the CSG plays a major role.
[0062] S22. In the preceding CSG program block, compare the current strip width setting with the newly read next strip width setting to determine the direction of the guide plate's movement.
[0063] S22 includes the following steps:
[0064] S221. When the width of the next strip is greater than the current strip width, the flying shear front guide plate needs to move in the direction of increasing the opening;
[0065] S221 includes the following steps:
[0066] S2211. When the time it takes for the tail of the monitored strip to leave HMD01 reaches 4.5s, the front CSG sends the strip width setting value of the increased lower block to the CSG as the guide plate opening width setting value.
[0067] S2212. If the time it takes for the tail of the monitored strip to leave HMD01 is less than 4.5s, continue monitoring until the time reaches 4.5s.
[0068] S222. When the width of the next strip is less than the current strip width, the flying shear guide plate needs to move in the direction where the opening becomes smaller.
[0069] S222 includes the following steps:
[0070] S2221. If the monitoring strip tail leaves the phototube HMD02, the front CSG sends the strip width setting of the smaller lower block to the CSG as the guide plate opening width setting value.
[0071] S2222. If the tail of the strip has not left the phototube HMD02, continue monitoring until the strip leaves HMD02.
[0072] S23. Set an enable switch and determine whether to send the previous CSG setting value to the CSG according to the logic rules of the enable switch.
[0073] S23 includes the following specific steps:
[0074] S231. According to the logic rules of the enable switch, when the enable switch is equal to 1, the front-end CSG will send the generated guide plate opening width setting value to the CSG.
[0075] S232. According to the logic rules of the enable switch, when the enable switch is equal to 0, the control method of the flying shear front plate in the prior art is switched to the method of the front CSG, and the front CSG does not send settings to the CSG.
[0076] The enable switch can be temporarily switched between "0" and "1" as needed.
[0077] After receiving the guide plate width setting value from the preceding CSG, the S3.CSG program block controls the flying shear front guide plate to move larger or smaller according to the setting before the head of the lower strip reaches HMD01. It controls the flying shear front guide plate to move to the set position, allowing the lower strip to enter the finishing rolling area; otherwise, it blocks the steel feed. This step is the same as the control logic steps of the flying shear front guide plate in the prior art.
[0078] In one specific embodiment, the control method for the forward positioning of the flying shear guide plate in strip rolling of the present invention was put into use in the 2050 hot rolling mill at the end of July 2021. The following is a screenshot of the width setting of the flying shear guide plate during large movements in the PDA monitoring data of the 2050 finishing mill in this embodiment of the present invention. Figure 5 The screenshot shown, as well as the screenshot of the width setting of the flying shear guide plate during the small movement in the monitoring data of the 2050 finishing mill PDA in this embodiment of the invention, is as follows: Figure 6 The diagram illustrates the real-time effect of the control method for placing the flying shear guide plate in front during strip rolling according to the present invention.
[0079] exist Figure 5 and Figure 6 In the above, "OLD CSG Setup Value" refers to the opening width setting sent by the control logic CSH of the flying shear front guide plate to the CSG in the prior art; "NEW CSG Setup Value" refers to the opening width setting sent by the front CSG to the CSG in the control method of the front flying shear front guide plate in strip rolling of the present invention.
[0080] In this embodiment of the invention, from Figure 5 As can be seen, when the flying shear guide plate moves to a large position, the opening width setting time sent by the front CSG of this invention to the CSG is 12.5 seconds earlier than the opening width setting time sent by the control logic CSH of the flying shear guide plate to the CSG in the prior art, that is, the finishing mill can feed steel 12.5 seconds earlier; from Figure 6As can be seen, when the flying shear guide plate moves to a smaller position, the opening width setting time sent by the front CSG of the present invention to the CSG is 5.82s earlier than the opening width setting time sent by the control logic CSH of the flying shear guide plate to the CSG in the prior art. That is, the steel can be fed into the finishing mill 5.82s earlier. The improvement effect of the control method of the front flying shear guide plate in strip rolling of the present invention is obvious, which reduces the waiting time of the strip at the entry of the finishing mill and improves the rolling rhythm.
[0081] After the implementation and commissioning of the control method for advancing the flying shear guide plate in strip rolling according to the present invention, a large amount of data shows that regardless of whether the flying shear guide plate moves to a large or small position in the embodiments of the present invention, this control method for advancing the flying shear guide plate can achieve the purpose of advancing the steel feed in the finishing mill, improving the rolling rhythm, and has the following characteristics:
[0082] 1) The overall effect of the flying shear guide plate in improving the rhythm during large movements is better than that of the flying shear guide plate in improving the rhythm during small movements.
[0083] 2) The faster the rolling pace of the strip steel production line, the more obvious the improvement effect;
[0084] 3) The earlier the head of the lower strip steel exits the R4 gate, the more obvious the rhythm improvement effect;
[0085] 4) In addition, the lifting effect of each piece of steel will be different.
[0086] Because the control method of advancing the flying shear guide plate in strip rolling of the present invention has significant effects, it can be extended to the control of flying shear guide plates in other similar hot-rolled strip steel plants. This enables the flying shear guide plate to start in advance, avoids the blockage of the finishing mill feed caused by the flying shear guide plate not moving properly, thereby reducing the waiting time of the strip at the finishing mill inlet and improving the rolling rhythm of the production line.
[0087] Finally, it should be noted that although the present invention has been described with reference to specific embodiments, those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Various equivalent changes or substitutions can be made without departing from the concept of the present invention. Therefore, any changes or modifications to the above embodiments within the essential spirit of the present invention will fall within the scope of the claims of the present invention.
Claims
1. A control method for the forward positioning of the flying shear guide plate in strip rolling, characterized in that, Includes the following steps: S1. L2 sends the strip width setting to the finishing mill TDC control unit when the strip head exits the roughing R4 mill; S2. The finishing mill TDC control unit controls the flying shear front guide plate according to the newly added logic control process, and sends the generated guide plate opening width setting value to CSG; In S2, the newly added logic control flow includes the following specific steps: S21. Add a front-end CSG program block to the finishing mill TDC control unit. The front-end CSG receives the strip width setting and is used for subsequent flying shear front guide plate control. S22. In the preceding CSG program block, compare the current strip width setting with the newly read next strip width setting to determine the direction of the guide plate's movement. S23. Set an enable switch and determine whether to send the previous CSG setting value to the CSG according to the logic rules of the enable switch; S3. After receiving the set value, CSG controls the flying shear front guide plate to move to the set position before the head of the lower strip reaches HMD01, allowing the lower strip to enter the finishing rolling area; otherwise, it blocks the steel feed.
2. The control method for the forward positioning of the flying shear guide plate in strip rolling as described in claim 1, characterized in that, S21 includes the following steps: S211. Despite the addition of a front-end CSG, the existing connection for CSH to send setting values to CSG is still retained and used only for monitoring and comparison in the PDA; S212. In actual operation, the time when the CSH sends the set value to the CSG is later than or equal to the time when the preceding CSG sends the set value, and the set value sent by the preceding CSG plays a major role.
3. The control method for the forward positioning of the flying shear guide plate in strip rolling as described in claim 1, characterized in that, S22 includes the following steps: S221. When the width of the next strip is greater than the current strip width, the flying shear front guide plate needs to move in the direction of increasing the opening; S222. When the width of the next strip is less than the current strip width, the flying shear guide plate needs to move in the direction where the opening becomes smaller.
4. The control method for the forward positioning of the flying shear guide plate in strip rolling as described in claim 3, characterized in that, S221 includes the following steps: S2211. When the time it takes for the tail of the monitored strip to leave HMD01 is more than 3 seconds, the front CSG sends the strip width setting value of the increased lower block to the CSG as the guide plate opening width setting value. S2212. If the time it takes for the tail of the monitored strip to leave HMD01 is less than 3 seconds, continue monitoring until the time reaches 3 seconds.
5. The control method for the forward positioning of the flying shear guide plate in strip rolling as described in claim 3, characterized in that, S222 includes the following steps: S2221. If the monitoring strip tail leaves the phototube HMD02, the front CSG sends the strip width setting of the smaller lower block to the CSG as the guide plate opening width setting value. S2222. If the tail of the strip has not left the phototube HMD02, continue monitoring until the strip leaves HMD02.
6. The control method for the forward positioning of the flying shear guide plate in strip rolling as described in claim 1, characterized in that, S23 includes the following specific steps: S231. When the enable switch is equal to 1, the front CSG will send the generated guide plate opening width setting value to the CSG; S232. When the enable switch is equal to 0, the control method of the flying shear front plate in the prior art is switched to the method of the front CSG, and the front CSG does not send settings to the CSG.
7. A control device for a flying shear guide plate in strip rolling, comprising a finishing mill inlet photoelectric tube HMD01, a flying shear CS, a finishing mill control computer L2, and CSG program blocks, CSH program blocks, and SDH program blocks disposed within the finishing mill TDC control unit, characterized in that, It also includes the HMD02 photocell installed at the exit of the flying shear front guide plate. The control device performs the control method for positioning the flying shear guide plate in the strip rolling process as described in any one of claims 1-6.
8. A control device for positioning the flying shear guide plate in front during strip rolling as described in claim 7, characterized in that, It also includes the pre-set CSG program block located in the finishing mill TDC control unit.