Self-adaptive centering clamping pinch brake roller device and control method

Abstract

The invention provides a self-adaptive centering clamping pinch brake roller device and a control method. The device comprises an upper pressing roller assembly, a lower pressing roller assembly, a pneumatic cylinder assembly, an adjustable linkage assembly, a monitoring assembly and a box body. The upper compression roller assembly and the lower compression roller assembly are directly used for clamping and braking a rolled piece, the adjustable linkage assembly counteracts the gravity of the upper compression roller assembly and the gravity of the lower compression roller assembly, and the monitoring assembly detects the compression roller abrasion loss and the offset of the center line of the rolled piece in real time. The method comprises the following steps: measuring the abrasion loss of a compression roller by adopting an encoder, measuring the center offset of a rolled piece by adopting a laser range finder, and adjusting the center height of the rolled piece through an adjustable linkage assembly. The device has the advantages that the gravity of the upper and lower compression roller assemblies is counteracted by adopting the adjustable linkage assembly, so that the energy loss is reduced. The monitoring assembly is used for measuring the abrasion loss of the compression roller and the offset between the axis and the center line of the rolled piece in real time, and the rolled piece quality and the system working stability are improved.

Description

Technical Field

[0001] This invention relates to the field of bar rolling technology, and in particular to an adaptive centering and clamping clamping brake roller device and control method. Background Technology

[0002] Pinch brake rolls are indispensable key equipment in modern continuous bar rolling production lines, primarily responsible for the reliable pinching and braking of high-speed moving bar stock. As steel rolling production moves towards higher speeds, greater flexibility, and automation, increasingly stringent requirements are being placed on the design and manufacturing of pinch brake roll devices. Currently, pinch brake rolls commonly employ a configuration of a cylinder-driven floating upper roll and a fixed lower roll. When the cross-sectional dimensions of the bar stock on a flexible rolling line vary significantly, the centerline of the bar stock can deviate considerably in the height direction, easily leading to steel blockage or runaway accidents. Existing technology includes a self-balancing, centering, and high-efficiency pinch brake roll device. This device uses a gear-based self-balancing mechanism to achieve linkage between the upper and lower rolls, offering advantages such as roll gravity self-balancing and good centerline alignment of the rolled stock. However, in the aforementioned pinch brake roll device, the gears are not adjustable, and wear on the rolls or gears can affect the pinching and braking effect. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide an adaptive centering and clamping clamping brake roller device and control method, which can effectively improve the quality of rolled products and the stability of system operation.

[0004] In a first aspect, embodiments of the present invention provide an adaptive centering and clamping clamping brake roller device, comprising:

[0005] The upper pressure roller assembly, lower pressure roller assembly, pneumatic cylinder assembly, adjustable linkage assembly, monitoring assembly and housing; the upper pressure roller assembly and lower pressure roller assembly can realize the clamping and braking of the rolled workpiece.

[0006] A support structure is provided on one outer wall of the housing. Inside the housing, there are a first support column, a second support column, and a third support column. An adjustable linkage assembly is located between the first and second support columns. An upper pressure roller assembly and a lower pressure roller assembly pass through the housing in the horizontal direction and are sequentially installed through the adjustable linkage assembly and the third support column. A pneumatic cylinder assembly is located on the top of the housing and can pass through the housing to connect with the adjustable linkage assembly. A monitoring assembly is located on the support structure on the housing.

[0007] Furthermore, the upper pressure roller assembly includes an upper input gear, an upper telescopic universal joint, and an upper pressure roller, which are connected in sequence. The upper pressure roller is rotatably connected to the adjustable linkage assembly via bearings.

[0008] Furthermore, the lower pressure roller assembly includes a lower input gear, a lower telescopic universal joint, a lower pressure roller, and a drive motor. The lower input gear, the lower telescopic universal joint, and the lower pressure roller are connected in sequence, and the lower input gear is connected to the drive motor.

[0009] Furthermore, the pneumatic cylinder assembly includes a pneumatic cylinder and a connecting rod, with the pneumatic cylinder connected to the connecting rod and the connecting rod rotatably connected to an adjustable linkage assembly.

[0010] Furthermore, the adjustable linkage assembly includes an upper swing arm, a lower swing arm, a slide block, an adjustment frame, a first adjustment bolt, and a second adjustment bolt. One end of the upper swing arm is installed between the first support column and the second support column, and the other end is connected to a connecting rod. An upper pressure roller passes through the middle of the upper swing arm. One end of the lower swing arm is installed between the first support column and the second support column, and a lower pressure roller passes through the middle of the lower swing arm. The upper and lower swing arms are slidably connected by a slide block. The slide block and the adjustment frame are slidably connected to form a sliding pair. The adjustment frame is installed between the first support column and the second support column and is slidably connected to the second support column to form a sliding pair. The first adjustment bolt and the second adjustment bolt are both connected to the second support column to form a threaded pair. The first adjustment bolt and the second adjustment bolt can cooperate to adjust the vertical height of the adjustment frame.

[0011] Furthermore, the monitoring components include a laser rangefinder and an encoder. The laser rangefinder is fixedly connected to the support structure and can measure the height of the rolled piece in real time. The encoder is fixedly connected to the rear surface of the second support column and can monitor the rotation angle of the upper swing arm in the adjustable linkage component in real time.

[0012] Secondly, embodiments of the present invention provide a control method for an adaptive centering and clamping clamping brake roller device, comprising:

[0013] S1. The encoder in the monitoring component measures the rotation angle of the upper swing arm in the adjustable linkage component in real time. According to the theoretical rotation angle of the upper swing arm Calculate the total wear of the upper and lower pressure rollers. ;

[0014] S2. The height of the rolled piece is measured in real time by a laser rangefinder in the monitoring component. According to the theoretical height of the rolled piece Calculate the deviation of the rolled piece from the centerline ;

[0015] S3, when the skewness is... When the value exceeds the second set threshold, the position of the rolled piece is adjusted by the first adjusting bolt and the second adjusting bolt.

[0016] Furthermore, when the total wear of the upper and lower pressure rollers... When the value exceeds the first set threshold, the upper and lower pressure rollers need to be replaced.

[0017] The beneficial effects of the embodiments of the present invention are as follows:

[0018] 1. The adjustable linkage component can be used to make the upper and lower pressure rollers clamp and release synchronously under the drive of a pneumatic cylinder, which improves the clamping and braking efficiency and helps to improve the stability and reliability of the operation.

[0019] 2. The use of adjustable linkage components can make the gravity of the upper pressure roller assembly and the lower pressure roller assembly cancel each other out, thereby reducing the load on the pneumatic cylinder assembly when it is idling and reducing energy loss.

[0020] 3. Using a laser rangefinder and encoder can measure the wear of the pressure roller and the offset of the center line of the rolled piece in real time, which is beneficial to improving the quality of the rolled piece and the stability of the system operation.

[0021] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained in accordance with the structures particularly pointed out in the description, claims and drawings.

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of an adaptive centering and clamping clamping brake roller device provided by the present invention.

[0025] Figure 2 This is a cross-sectional view of an adaptive centering clamping clamping brake roller device provided by the present invention.

[0026] Figure 3 The diagram shows the upper and lower pressure roller assemblies of an adaptive centering and clamping clamping brake roller device provided by the present invention.

[0027] Figure 4 This invention provides a schematic diagram of the pneumatic cylinder assembly and adjustable linkage assembly of an adaptive centering clamping and braking roller device.

[0028] Figure 5 This is a schematic diagram of the adjustable linkage component structure of an adaptive centering clamping and braking roller device provided by the present invention.

[0029] Figure 6 This is a schematic diagram of the upper swing arm of an adaptive centering and clamping clamping brake roller device provided by the present invention.

[0030] Figure 7 This is a schematic diagram of the lower swing arm of an adaptive centering clamping brake roller device provided by the present invention.

[0031] Figure 8 This is a schematic diagram of the slide block of an adaptive centering clamping and braking roller device provided by the present invention.

[0032] Figure 9 This is a schematic diagram of the adjustment frame structure of an adaptive centering and clamping clamping brake roller device provided by the present invention.

[0033] Figure 10 This is a schematic diagram of the housing and monitoring components of an adaptive centering and clamping clamping brake roller device provided by the present invention.

[0034] Figure 11 Another side view of the housing structure of an adaptive centering clamping feed brake roller device provided by the present invention. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] The following detailed description, in conjunction with the accompanying drawings, describes an adaptive centering and clamping clamping brake roller device and control method provided by the present invention.

[0038] like Figures 1-11 As shown, an adaptive centering clamping and braking roller device of the present invention includes: an upper pressure roller assembly 1, a lower pressure roller assembly 2, a pneumatic cylinder assembly 3, an adjustable linkage assembly 4, a monitoring assembly 5, and a housing 6. The upper pressure roller assembly 1 and the lower pressure roller assembly 2 can realize the clamping and braking of the rolled piece 7.

[0039] The housing 6 has a support structure 64 on one outer wall, and a first support column 67, a second support column 63, and a third support column 68 inside. An adjustable linkage assembly 4 is located between the first support column 67 and the second support column 63. An upper pressure roller assembly 1 and a lower pressure roller assembly 2 pass through the housing 6 in the horizontal direction and are sequentially installed on the adjustable linkage assembly 4 and the third support column 68. A pneumatic cylinder assembly 3 is located on the top of the housing 6 and can pass through the housing 6 to connect with the adjustable linkage assembly 4. A monitoring assembly 5 is installed on the support structure 64 on the housing 6.

[0040] Furthermore, in combination Figure 3 , Figure 10 The upper pressure roller assembly 1 includes an upper input gear 11, an upper telescopic universal joint 12, and an upper pressure roller 13. The upper input gear 11, the upper telescopic universal joint 12, and the upper pressure roller 13 are connected in sequence. The upper pressure roller 13 is rotatably connected to the adjustable linkage assembly 4 through a bearing.

[0041] Specifically, the first left shaft end structure 111 of the upper input gear 11 passes through the third support column 68 and is fixedly connected to the first right input end 121 of the upper telescopic universal joint 12. The first right shaft end structure 112 of the upper input gear 11 is rotatably connected to the first mounting hole 61 of the housing 6 through a bearing. The first left output end 122 of the upper telescopic universal joint 12 is fixedly connected to the first shaft end structure 131 of the upper pressure roller 13. The first shaft end structure 131 of the upper pressure roller 13 is rotatably connected to the adjustable linkage assembly 4 through a bearing.

[0042] Combination Figure 3 , Figure 10 , Figure 11 The lower pressure roller assembly 2 includes a lower input gear 21, a lower telescopic universal joint 22, a lower pressure roller 23, and a drive motor 24. The lower input gear 21, the lower telescopic universal joint 22, and the lower pressure roller 23 are connected in sequence, and the lower input gear 21 is connected to the drive motor 24.

[0043] Specifically, the second left shaft end structure 211 of the lower input gear 21 passes through the third support column 68 and is fixedly connected to the second right input end 221 of the lower telescopic universal joint 22. The second right shaft end structure 212 of the lower input gear 21 is rotatably connected to the second mounting hole 62 of the housing 6 through a bearing. The second right shaft end structure 212 of the lower input gear 21 is fixedly connected to the output shaft 241 of the drive motor 24. The drive motor 24 is fixedly connected to the rear mounting surface 66 of the housing 6. The lower input gear 21 meshes with the upper input gear 11 in the upper pressure roller assembly 1 to form a gear pair. The second left output end 222 of the lower telescopic universal joint 22 is fixedly connected to the second shaft end structure 231 of the lower pressure roller 23. The second shaft end structure 231 of the lower pressure roller 23 is rotatably connected to the adjustable linkage assembly 4 through a bearing.

[0044] Combination Figure 2 , Figure 4 , Figure 10 The pneumatic cylinder assembly 3 includes a pneumatic cylinder 31 and a connecting rod 32. The pneumatic cylinder 31 is connected to the connecting rod 32, and the connecting rod 32 is rotatably connected to the adjustable linkage assembly 4.

[0045] Specifically, the pneumatic cylinder 31 is fixedly connected to the upper mounting surface 65 of the housing 6. The push rod 311 of the pneumatic cylinder 31 is rotatably connected to one end of the connecting rod 32 through the first shaft pin 33, and the other end of the connecting rod 32 is rotatably connected to the adjustable linkage assembly 4 through the second shaft pin 34.

[0046] Combination Figures 5-10 The adjustable linkage assembly includes an upper swing arm 41, a lower swing arm 42, a slide ram 43, an adjustment frame 44, a first adjustment bolt 45, and a second adjustment bolt 46. One end of the upper swing arm 41 is installed between the first support column 67 and the second support column 63, and the other end is connected to the connecting rod 32. An upper pressure roller 13 passes through the middle of the upper swing arm 41. One end of the lower swing arm 42 is installed between the first support column 67 and the second support column 63, and a lower pressure roller 23 passes through the middle of the lower swing arm 42. The upper swing arm 41 and the lower swing arm 42 are slidably connected by the slide ram 43. The slide ram 43 and the adjustment frame 44 are slidably connected to form a sliding pair. The adjustment frame 44 is installed between the first support column 67 and the second support column 63 and is slidably connected to the second support column 63 to form a sliding pair. The first adjustment bolt 45 and the second adjustment bolt 46 are both connected to the second support column 63 to form a threaded pair. The first adjustment bolt 45 and the second adjustment bolt 46 can cooperate to adjust the vertical height of the adjustment frame 44.

[0047] Specifically, the third shaft pin structure 411 of the upper swing arm 41 is rotatably connected to the eighth mounting hole 671 of the first support column 67 and the third mounting hole 631 of the second support column 63, the fourth mounting hole 412 of the upper swing arm 41 is rotatably connected to the first shaft end structure 131 of the upper pressure roller 13 through a bearing, the fifth mounting hole 413 of the upper swing arm 41 is rotatably connected to the connecting rod 32, and the first fork-shaped structure 414 of the upper swing arm 41 is slidably connected to the slide block 43;

[0048] The fourth shaft pin structure 421 of the lower swing arm 42 is rotatably connected to the ninth mounting hole 672 of the first support column 67 and the sixth mounting hole 632 of the second support column 63. The seventh mounting hole 422 of the lower swing arm 42 is rotatably connected to the second shaft end structure 231 of the lower pressure roller 23 through a bearing. The second fork-shaped structure 423 of the lower swing arm 42 is slidably connected to the slide block 43.

[0049] The sliding pin structure 431 of the ram 43 is slidably connected to the first fork structure 414 of the upper swing arm 41 and the second fork structure 423 of the lower swing arm 42. The ram 43 is slidably connected to the first guide rail 441 of the adjustment frame 44 through the first slider 432 and forms a sliding pair. The second slider 442 of the adjustment frame 44 is slidably connected to the second guide rail 634 of the second support column 63 and forms a sliding pair.

[0050] The first adjusting bolt 45 is connected to the first threaded hole 635 of the second support column 63 and forms a threaded pair. The second adjusting bolt 46 is connected to the second threaded hole 636 of the second support column 63 and forms a threaded pair. The first adjusting bolt 45 and the second adjusting bolt 46 cooperate to adjust the vertical height of the adjusting frame 44.

[0051] Combination Figure 10 , Figure 11 The monitoring component 5 includes a laser rangefinder 51 and an encoder 52. The laser rangefinder 51 is fixedly connected to the support structure 64 and can measure the height of the rolled piece 7 in real time. The encoder 52 is fixedly connected to the rear surface 637 of the second support column 63 and can monitor the rotation angle of the upper swing arm 41 in the adjustable linkage component 4 in real time.

[0052] Based on this, the working principle of the adaptive centering and clamping clamping brake roller device provided in this embodiment is as follows:

[0053] The drive motor 24 drives the upper pressure roller 13 and the lower pressure roller 23 to rotate through the upper input gear 11, the upper telescopic universal joint 12, the lower input gear 21, and the lower telescopic universal joint 22, thereby realizing the clamping and braking of the rolled piece 7. The pneumatic cylinder 31 drives the upper pressure roller 13 to press the rolled piece 7 downward through the connecting rod 32.

[0054] During this process, the adjustable linkage component 4 can realize the linkage between the lower pressure roller 23 and the upper pressure roller 13, and can balance the gravity of the upper pressure roller component 1, thereby reducing the load on the pneumatic cylinder 31.

[0055] Meanwhile, the monitoring component 5 monitors the height of the rolled piece 7 and the rotation angle of the upper swing arm 41 in real time, and calculates the wear of the upper pressure roller 13 and the lower pressure roller 23 and the deviation of the vertical height of the axis of the rolled piece 7. The first adjusting bolt 45 and the second adjusting bolt 46 can adjust their own angles according to the deviation, thereby adjusting the height of the rolled piece 7 and achieving high-precision alignment of its axis.

[0056] Example 2

[0057] The present invention discloses a control method for an adaptive centering and clamping clamping brake roller device as described in Embodiment 1, comprising:

[0058] S1. The encoder 52 in the monitoring component 5 measures the rotation angle of the upper swing arm 41 in the adjustable linkage component 4 in real time. According to the theoretical rotation angle of the upper swing arm 41 Calculate the total wear of the upper pressure roller 13 and the lower pressure roller 23. .

[0059] Of which, total wear The expression is:

[0060]

[0061] In the formula, This is the distance from the axis of the upper pressure roller 13 to the axis of the third shaft pin structure 411 of the upper swing arm 41.

[0062] As a preferred embodiment, when the total wear of the upper pressure roller 13 and the lower pressure roller 23 is... When the value exceeds the first set threshold, the upper pressure roller 13 and the lower pressure roller 23 need to be replaced. In this embodiment, the first set threshold is 1~5mm.

[0063] S2. The height of the rolled piece 7 is measured in real time by the laser rangefinder 51 in the monitoring component 5. According to the theoretical height of rolled piece 7 Calculate the deviation of the vertical height of axis 7 of the rolled piece. .

[0064] Among them, the deviation of the vertical height of the axis of the rolled piece 7 The expression is:

[0065]

[0066] S3, when the skewness is... When the value exceeds the second set threshold, the position of the rolled piece 7 is adjusted by the first adjusting bolt 45 and the second adjusting bolt 46.

[0067] When adjusting the position of the rolled piece 7, the adjustment angle of the first adjusting bolt 45 is as follows: The adjustment angle of the second adjusting bolt 46 is... Their expressions are as follows:

[0068]

[0069]

[0070] In the formula, The distance between the axis of the third pivot pin structure 411 of the upper swing arm 41 and the axis of the fourth pivot pin structure 421 of the lower swing arm 42. The sign indicates clockwise rotation. The symbol indicates counterclockwise rotation.

[0071] In this embodiment, the second set threshold is 0.5~2mm.

[0072] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0073] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A self-adaptive centering and clamping clamping brake roller device, characterized in that, include: The upper pressure roller assembly (1), the lower pressure roller assembly (2), the pneumatic cylinder assembly (3), the adjustable linkage assembly (4), the monitoring assembly (5) and the housing (6) are used to clamp and brake the rolled piece (7). A support structure (64) is provided on one side of the outer wall of the box (6). The box (6) is provided with a first support column (67), a second support column (63), and a third support column (68). An adjustable linkage assembly (4) is provided between the first support column (67) and the second support column (63). The upper pressure roller assembly (1) and the lower pressure roller assembly (2) pass through the box (6) in the horizontal direction and are sequentially installed on the adjustable linkage assembly (4) and the third support column (68). The pneumatic cylinder assembly (3) is provided on the top of the box (6) and can pass through the box (6) to connect with the adjustable linkage assembly (4). The monitoring assembly (5) is provided on the support structure (64) on the box (6).

2. The adaptive centering and clamping clamping brake roller device according to claim 1, characterized in that, The upper pressure roller assembly (1) includes an upper input gear (11), an upper telescopic universal joint (12) and an upper pressure roller (13). The upper input gear (11), the upper telescopic universal joint (12) and the upper pressure roller (13) are connected in sequence. The upper pressure roller (13) is rotatably connected to the adjustable linkage assembly (4) through a bearing.

3. The adaptive centering and clamping clamping brake roller device according to claim 1, characterized in that, The lower pressure roller assembly (2) includes a lower input gear (21), a lower telescopic universal joint (22), a lower pressure roller (23) and a drive motor (24). The lower input gear (21), the lower telescopic universal joint (22) and the lower pressure roller (23) are connected in sequence, and the lower input gear (21) is connected to the drive motor (24).

4. The adaptive centering and clamping clamping brake roller device according to claim 1, characterized in that, The pneumatic cylinder assembly (3) includes a pneumatic cylinder (31) and a connecting rod (32). The pneumatic cylinder (31) is connected to the connecting rod (32), and the connecting rod (32) is rotatably connected to the adjustable linkage assembly (4).

5. The adaptive centering and clamping clamping brake roller device according to claim 1, characterized in that, The adjustable linkage assembly includes an upper swing arm (41), a lower swing arm (42), a slide block (43), an adjustment frame (44), a first adjustment bolt (45), and a second adjustment bolt (46). One end of the upper swing arm (41) is installed between the first support column (67) and the second support column (63), and the other end is connected to the connecting rod (32). An upper pressure roller (13) is inserted through the middle of the upper swing arm (41). One end of the lower swing arm (42) is installed between the first support column (67) and the second support column (63), and a lower pressure roller (23) is inserted through the middle of the lower swing arm (42). The upper swing arm (41) and the lower swing arm (42) are slidably connected by a slide block (43). The slide block (43) and the adjusting frame (44) are slidably connected to form a sliding pair. The adjusting frame (44) is installed between the first support column (67) and the second support column (63) and is slidably connected to the second support column (63) to form a sliding pair. The first adjusting bolt (45) and the second adjusting bolt (46) are both connected to the second support column (63) to form a threaded pair. The first adjusting bolt (45) and the second adjusting bolt (46) can cooperate to adjust the vertical height of the adjusting frame (44).

6. The adaptive centering and clamping clamping brake roller device according to claim 1, characterized in that, The monitoring component (5) includes a laser rangefinder (51) and an encoder (52). The laser rangefinder (51) is fixedly connected to the support structure (64) and can measure the height of the rolled piece (7) in real time. The encoder (52) is fixedly connected to the rear surface (637) of the second support column (63) and can monitor the rotation angle of the upper swing arm (41) in the adjustable linkage component (4) in real time.

7. A control method for an adaptive centering and clamping clamping brake roller device according to any one of claims 1 to 6, characterized in that, include: S1. The encoder (52) in the monitoring component (5) measures the rotation angle of the upper swing arm (41) in the adjustable linkage component (4) in real time. According to the theoretical rotation angle of the upper swing arm (41) Calculate the total wear of the upper pressure roller (13) and the lower pressure roller (23). ; S2. The height of the rolled piece (7) is measured in real time by the laser rangefinder (51) in the monitoring component (5). According to the theoretical height of the rolled piece (7) Calculate the deviation of the rolled piece (7) from the center line. ; S3, when the skewness is... When the value is greater than the second set threshold, the position of the rolled piece (7) is adjusted by the first adjusting bolt (45) and the second adjusting bolt (46).

8. A control method according to claim 7, characterized in that, When the total wear of the upper pressure roller (13) and the lower pressure roller (23) When the value exceeds the first set threshold, the upper pressure roller (13) and the lower pressure roller (23) need to be replaced.

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