On-line grinding device for roller

Abstract

The invention discloses an on-line grinding device for a roller, relates to the technical field of roller grinding, and aims to solve the problems that the production efficiency is low and the product quality is influenced due to the fact that off-line grinding is needed and the segment difference generated by a working roller in the rolling process cannot be solved in real time when the roller is ground at present. Comprising a rack, a working roller, a downward pressing assembly, a first moving assembly and a coping assembly, and the working roller is rotationally arranged on the rack; the pressing assembly is arranged on the rack and used for pressing the working roller downwards so that the working roller can make contact with a rolled piece. The first moving assembly is fixedly connected with the rack, and the first moving assembly is arranged on one side of the working roller; the grinding assembly is arranged on the first moving assembly, the first moving assembly is used for adjusting the axial position of the grinding assembly relative to the working roller, and the grinding assembly is used for grinding the surface of the working roller.

Description

Technical Field

[0001] The invention relates to the technical field of roller grinding, and in particular to an online roller grinding device. Background Art

[0002] When using a rolling mill to hot-roll plates, especially in the rolling process of composite plates, the rolling rolls that are in direct contact with the rolled pieces are working rolls. During the long-term use of the working rolls, their wear is inevitable, and even serious defects will occur on the surface of the working rolls. The working rolls need to be regularly ground to maintain the accuracy and flatness of the working roll surface. The current grinding method is to remove the working rolls from the rolling mill for offline grinding, but this grinding method affects the work efficiency; on the other hand, due to the different wear amounts on different parts of the working roll surface, the strip edge will be thinned when rolling the strip, so only narrower and narrower strips can be rolled, so the rolling plan must be arranged from wide strips to narrow strips, which affects product quality and reduces production efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide an online grinding device for rolling rolls to solve the problem that the current grinding of working rolls requires offline grinding, and the step difference generated by the working rolls during the rolling process cannot be solved in real time, thus resulting in low production efficiency and affected product quality.

[0004] In order to achieve the above object, the present invention provides the following technical solutions: A roller online grinding device, comprising: frame; Working rolls, the working rolls are rotatably arranged on the frame; A pressing assembly is arranged on the frame and is used to press down the working roll so that the working roll contacts the workpiece; A first moving assembly, the first moving assembly is fixedly connected to the frame, and the first moving assembly is arranged on one side of the working roll; The grinding assembly is arranged on the first movable assembly, the first movable assembly is used to adjust the axial position of the grinding assembly relative to the working roller, and the grinding assembly is used to grind the surface of the working roller.

[0005] Compared with the prior art, the online roller grinding device provided by the present invention has a working roller arranged on the frame, and the working roller rotates around its own axis on the frame. When grinding the working roller, first release the pressure applied by the pressing assembly on the working roller to separate the working roller from the rolled piece, and then adjust the axial position of the grinding assembly relative to the working roller by adjusting the first moving assembly, so that the grinding assembly can move to the surface defect position of the working roller for grinding. Therefore, when using the online roller grinding device provided by the present invention, when grinding the working roller, there is no need to remove the working roller from the rolling mill, so that the online grinding of the working roller is realized. At the same time, the grinding assembly can be operated at any time to grind the step difference generated during the working roller working process, which improves the product quality and the production efficiency.

[0006] Optionally, in the above-mentioned online roller grinding device, the first moving component includes: A first support seat, the first support seat is fixedly connected to the frame, and a first support member is fixedly arranged at one end of the first support seat; A first driving motor, the first driving motor is fixedly arranged at the other end of the first supporting seat; A first lead screw, the first lead screw is arranged on the first support seat and is rotatably connected to the first support member, the axis of the first lead screw is parallel to the axis of the working roll, one end of the first lead screw is connected to the first drive motor, and the first drive motor is used to drive the first lead screw to rotate; A first coupling, the first coupling is connected to the first drive motor and the first lead screw respectively; A first moving member, the first moving member is threadedly connected to the first lead screw, a grinding assembly is fixedly arranged on the first moving member, and the first moving member is used to adjust the axial position of the grinding assembly relative to the working roll; The first guide rail is fixedly arranged on the first support seat, the first guide rail is arranged parallel to the first lead screw, and the first moving member is matched with the first guide rail for guiding movement.

[0007] Optionally, in the above-mentioned online roller grinding device, the grinding assembly includes: A first base, fixedly disposed on the first moving assembly; A first mechanical arm, the first mechanical arm is rotatably connected to the first base; A driving member, the driving member is fixedly connected to one end of the first mechanical arm; The grinding piece is connected with the driving piece, and the driving piece is used to drive the grinding piece to grind the working roll.

[0008] Optionally, in the above-mentioned online roller grinding device, the online roller grinding device further comprises: A second moving assembly, the second moving assembly is fixedly connected to the frame, and the second moving assembly is arranged on the other side of the working roll; A repair component is arranged on the second movable component, the second movable component is used to adjust the axial position of the repair component relative to the working roller, and the repair component is used to perform additive repair on the surface defects of the working roller.

[0009] Optionally, in the above-mentioned online roller grinding device, the second moving component includes: A second support base, the second support base is fixedly connected to the frame, and a second support member is fixedly arranged at one end of the second support base; A second driving motor, the second driving motor is fixedly arranged at the other end of the second supporting base; A second lead screw, the second lead screw is arranged on the second support seat and is rotatably connected to the second support member, the axis of the second lead screw is parallel to the axis of the working roll, one end of the second lead screw is connected to the second drive motor, and the second drive motor is used to drive the second lead screw to rotate; A second coupling, the second coupling being connected to the second drive motor and the second lead screw respectively; A second moving member, the second moving member is threadedly connected to the second lead screw, a repair component is fixedly arranged on the second moving member, and the second moving member is used to adjust the axial position of the repair component relative to the working roll; The second guide rail is fixedly arranged on the second support seat, the second guide rail is arranged parallel to the second lead screw, and the second moving member is matched with the second guide rail for guiding movement.

[0010] Optionally, in the above-mentioned online roller grinding device, the repair component includes: A second base, fixedly disposed on the second moving assembly; A second mechanical arm, the second mechanical arm is rotatably connected to the second base; The laser cladding mechanism is arranged at one end of the second robot arm, and is used for performing additive repair on the surface defects of the working roll.

[0011] Optionally, in the above-mentioned online roller grinding device, the online roller grinding device also includes a detection component, which is fixedly connected to the frame and located above the working roller, and the detection component is used to detect the surface of the working roller.

[0012] Optionally, in the above-mentioned online roller grinding device, the detection component includes: A frame body, the frame body is fixedly connected to the frame; A first bracket, the first bracket is fixedly connected to the frame; An image sensor is fixedly arranged on the first bracket and is used to obtain an image of the surface of the working roller.

[0013] Optionally, in the above-mentioned online roller grinding device, the detection component further includes: A second bracket, the second bracket is fixedly connected to an end of the first bracket away from the bracket body; The annular light source is fixedly arranged on the second bracket, and the annular light source cover is arranged outside the lens of the image sensor.

[0014] Optionally, in the above-mentioned online roller grinding device, the number of the detection components is two, and the two detection components are respectively arranged on both sides of the working roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 A schematic diagram of a three-dimensional view of an online roller grinding device proposed in an embodiment of the present invention; Figure 2 It is another schematic diagram of the three-dimensional view of an online roller grinding device proposed in an embodiment of the present invention; Figure 3 A schematic diagram of one side of a grinding component of an online grinding device for a roller provided in an embodiment of the present invention; Figure 4 A schematic diagram of one side of a repair component of an online roller grinding device provided in an embodiment of the present invention; Figure 5 It is a schematic diagram of an enlarged view of a repair component of an online roller grinding device proposed in an embodiment of the present invention; Figure 6 It is a schematic diagram of an enlarged view of a grinding assembly of an online grinding device for a roller proposed in an embodiment of the present invention; Figure 7 It is a schematic diagram of an enlarged view of a first moving component of an online roller grinding device proposed in an embodiment of the present invention; Figure 8 It is a schematic top view of a first moving assembly of an online roller grinding device proposed in an embodiment of the present invention; Fig. 9 It is a schematic diagram of an enlarged view of a second moving component of an online roller grinding device proposed in an embodiment of the present invention; Fig.10 It is a schematic top view of a second moving assembly of an online roller grinding device proposed in an embodiment of the present invention; Fig.11 It is a schematic diagram of an enlarged view of a detection component of an online roller grinding device proposed in an embodiment of the present invention; Fig.12A flowchart of three working modes of an online roller grinding device proposed in an embodiment of the present invention; Fig.13 A flowchart of a working mode of an online roller grinding device proposed in an embodiment of the present invention; Fig.14 It is a flow chart of working mode 2 of an online roller grinding device proposed in an embodiment of the present invention; Fig.15 This is a flow chart of working mode 2 of an online roller grinding device proposed in an embodiment of the present invention.

[0016] Figure numerals: 1 is a frame, 2 is a working roller, 3 is a pressing assembly, 4 is a first moving assembly, 410 is a first supporting seat, 411 is a first supporting member, 420 is a first driving motor, 430 is a first screw, 440 is a first coupling, 450 is a first moving member, 460 is a first guide rail, 470 is a first protective member, 5 is a grinding assembly, 510 is a first base, 520 is a first mechanical arm, 530 is a driving member, 540 is a grinding member, 550 is a protective cover, 6 is a second moving assembly Part, 610 is the second support seat, 611 is the second support member, 620 is the second drive motor, 630 is the second screw, 640 is the second coupling, 650 is the second moving member, 660 is the second guide rail, 670 is the second protective member, 7 is the repair component, 710 is the second base, 720 is the second robot arm, 730 is the laser cladding mechanism, 8 is the detection component, 810 is the frame, 820 is the first bracket, 830 is the image sensor, 840 is the second bracket, and 850 is the annular light source. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0020] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figure 1 and Figure 2 The roll online grinding device provided by the embodiment of the present invention comprises: a frame 1, a working roll 2, a pressing assembly 3, a first moving assembly 4 and a grinding assembly 5, wherein the working roll 2 is rotatably arranged on the frame 1 and rotates around its own axis; the pressing assembly 3 is arranged on the frame 1, and is used to press down the working roll 2 so that the working roll 2 contacts the workpiece; the first moving assembly 4 is fixedly connected to the frame 1, and the first moving assembly 4 is arranged on one side of the working roll 2; the grinding assembly 5 is arranged on the first moving assembly 4, and the first moving assembly 4 is used to adjust the axial position of the grinding assembly 5 relative to the working roll 2, and the grinding assembly 5 is used to grind the surface of the working roll 2.

[0023] For specific implementation: please refer to Figure 1 and Figure 2In the online roller grinding device provided by the present invention, a working roller 2 is arranged on the frame 1, and the working roller 2 rotates around its own axis on the frame 1. When grinding the working roller 2, first release the pressure applied by the pressing component 3 on the working roller 2 to separate the working roller 2 from the rolled piece, and then adjust the axial position of the grinding component 5 relative to the working roller 2 by adjusting the first moving component 4, so that the grinding component 5 can move to the surface defect position of the working roller 2 for grinding. Therefore, when using the online roller grinding device provided by the present invention, when grinding the working roller 2, there is no need to remove the working roller 2 from the rolling mill, so that the online grinding of the working roller 2 is realized. At the same time, the grinding component 5 can be operated at any time to grind the step difference generated during the working roller 2, which improves the product quality and the production efficiency.

[0024] As a possible implementation, Figure 7 As shown, the first moving assembly 4 includes a first support seat 410, a first drive motor 420, a first lead screw 430, a first coupling 440, a first moving member 450 and a first guide rail 460, wherein the first support seat 410 is fixedly connected to the frame 1, and a first support member 411 is fixedly arranged at one end of the first support seat 410; the first drive motor 420 is fixedly arranged at the other end of the first support seat 410; the first lead screw 430 is arranged on the first support seat 410 and is rotatably connected to the first support member 411, the axis of the first lead screw 430 is parallel to the axis of the working roll 2, and one end of the first lead screw 430 is connected to the first support seat 410. It is connected to the first drive motor 420, and the first drive motor 420 is used to drive the first lead screw 430 to rotate; the first coupling 440 is respectively connected to the first drive motor 420 and the first lead screw 430; the first movable member 450 is threadedly connected to the first lead screw 430, and a grinding assembly 5 is fixedly arranged on the first movable member 450, and the first movable member 450 is used to adjust the axial position of the grinding assembly 5 relative to the working roll 2; the first guide rail 460 is fixedly arranged on the first support seat 410, and the first guide rail 460 is arranged parallel to the first lead screw 430, and the first movable member 450 is guided and moved in coordination with the first guide rail 460.

[0025] During specific implementation: the first support seat 410 is fixedly installed on the frame 1, providing a stable installation foundation for other components of the first movable assembly 4, and a first support member 411 is fixed at one end thereof, and the first support member 411 provides a support point for the rotation of the first screw 430, thereby ensuring the stability of the first screw 430 during the rotation process; the first drive motor 420 is fixed at one end of the first support seat 410, and is connected to the first screw 430 through a first coupling 440. This connection method enables the power of the first drive motor 420 to be effectively transmitted to the first screw 430 to drive it to rotate. The first coupling 440 plays a role in connecting and transmitting torque, and at the same time can compensate for the installation error between the motor shaft and the screw shaft to a certain extent, thereby ensuring the smoothness of power transmission; the first The lead screw 430 is arranged on the first support seat 410 and is rotatably connected to the first support member 411, and its axis is parallel to the axis of the working roller 2; the first movable member 450 is connected to the first lead screw 430 by threaded transmission, and when the first lead screw 430 rotates under the drive of the first drive motor 420, the first movable member 450 can move axially along the first lead screw 430; the first guide rail 460 is fixed on the first support seat 410 and is parallel to the first lead screw 430, and the first movable member 450 cooperates with the first guide rail 460 to guide the movement, which ensures that the first movable member 450 will not rotate during the movement, and can only make a linear motion along the direction of the first guide rail 460, so that the grinding assembly 5 fixed on the first movable member 450 can accurately move in the axial direction of the working roller 2.

[0026] For example, Figure 7 As shown, a first protective member 470 is provided on the side wall of the first support seat 410 and in a direction parallel to the axis of the first lead screw 430. The first protective member 470 is located between the working roller 2 and the first moving assembly 4, and its function is to prevent the working roller 2 from colliding with the various components of the first moving assembly 4 and debris from entering the first moving assembly 4 in the working state, thereby improving the stability of the device. Further, a card slot is provided at both ends of the first support seat 410, respectively, near the first drive motor 420 and the first support member 411. The extending direction of the card slot is perpendicular to the axis of the first lead screw 430, and the card slot is used to engage with the first protective member 470, so that the first protective member 470 can be slid up and down and connected to the first support seat 410, so that the height of the first protective member 470 can be adjusted to better protect the various components of the first moving assembly 4. Optionally, the first protective member 470 may be a first protective plate having a longitudinal protective portion and a transverse protective portion, wherein the longitudinal protective portion is located on a side of the first movable member 450 close to the working roll 2 , and the transverse protective portion is located on an upper portion of the first movable member 450 .

[0027] Furthermore, if Figure 8As shown, two first protection members 470 are provided, respectively disposed on both sides of the first support base 410 .

[0028] When the working roll 2 needs to be ground, the first drive motor 420 is started, and the rotational power of the motor is transmitted to the first lead screw 430 through the first coupling 440, so that the first lead screw 430 drives the first moving member 450 to move, and then the grinding assembly 5 moves to the position where the working roll 2 needs to be ground. The precise position adjustment of the grinding assembly 5 in the axial direction of the working roll 2 is achieved, which can ensure that the grinding assembly 5 accurately reaches the position where grinding is required, and improve the grinding accuracy.

[0029] It should be noted that if Figure 1 As shown, in the online roller grinding device provided by the present invention, a driving assembly for driving the working roller 2 to rotate is also provided, and the driving assembly is composed of a universal shaft, a reducer and a motor. The motor is used as a power source, and the reducer is connected to the motor for adjusting the speed and torque. One end of the universal shaft is connected to the reducer, and the other end is connected to the shaft end of the working roller 2. The universal shaft can flexibly transmit power within a certain angle range. When the working roller 2 is working, due to the installation of the device or the rotation of the working roller 2, the shaft end of the working roller 2 may have a certain angle deviation. The universal shaft can effectively compensate for this angle deviation, ensure the smooth transmission of power, and will not affect the efficiency and stability of power transmission due to slight changes in the angle.

[0030] Exemplarily, the first moving member 450 is a rectangular block with a threaded hole and a through hole, and the first lead screw 430 is inserted into the threaded hole to perform threaded transmission with the rectangular block; the first guide rail 460 is inserted into the through hole to ensure that the rectangular block can only move in a direction parallel to the working roll 2 under the drive of the first lead screw 430. The design of the rectangular block provides a platform for the grinding assembly 5 to ensure the stability of the grinding assembly 5 when it reaches the grinding position and the stability during the grinding process.

[0031] In some embodiments, Figure 6 As shown, the grinding assembly 5 includes a first base 510, a first mechanical arm 520, a driving member 530 and a grinding member 540, wherein the first base 510 is fixedly arranged on the first moving assembly 4; the first mechanical arm 520 is rotatably connected to the first base 510; the driving member 530 is fixedly connected to one end of the mechanical arm; the grinding member 540 is connected to the driving member 530, and the driving member 530 is used to drive the grinding member 540 to grind the working roller 2.

[0032] The first base 510 is fixed on the first moving assembly 4, and the first moving assembly 4 can adjust the position of the first base 510 in the axial direction, so as to determine the position of the entire grinding assembly 5 in the axial direction of the working roll 2; the first mechanical arm 520 is installed on the first base 510 by a rotating connection, and this rotating connection allows the first mechanical arm 520 to change its angle within a certain range relative to the first base 510, so that the first mechanical arm 520 can adjust its posture in space, so as to better adapt to different positions and shapes of the surface of the working roll 2, and provide a guarantee for good contact between the grinding member 540 and the surface of the working roll 2; the driving member 530 is fixed at one end of the first mechanical arm 520, and the grinding member 540 is connected to the driving member 530. The posture adjustment of the first mechanical arm 520 can drive the driving member 530 and the grinding member 540 to reach a suitable position, and the driving member 530 provides power for the grinding member 540, so that it can perform grinding operations on the working roll 2. The connection method between the driving member 530 and the grinding member 540 ensures effective transmission of power, so that the grinding member 540 can work normally under the drive of the driving member 530 .

[0033] The grinding process is divided into three stages, namely: the position adjustment stage, the first moving assembly 4 moves the first base 510 (and the entire grinding assembly 5) to the approximate axial position of the working roll 2 according to the position of the working roll 2 surface that needs to be ground; the posture adjustment stage, the first mechanical arm 520 rotates relative to the first base 510, adjusts its own angle and posture according to the specific conditions of the working roll 2 surface, and through the rotation of the first mechanical arm 520, the grinding piece 540 is more accurately aligned with the area to be ground, so as to achieve a good fit with the surface of the working roll 2; the grinding stage, the driving member 530 is started after the posture of the first mechanical arm 520 is adjusted, and provides power to the grinding piece 540, and the grinding piece 540 starts to grind the surface of the working roll 2 under the drive of the driving member 530. It should be noted that during the grinding process, the first mechanical arm 520 may need to further fine-tune its posture according to the progress of grinding and the changes in the surface of the working roll 2 to ensure the grinding effect.

[0034] With such arrangement, through the cooperation of the first moving component 4 and the first mechanical arm 520, the grinding component 5 can realize flexible position adjustment in the axial and circumferential directions of the working roll 2. This flexibility enables the grinding piece 540 to accurately reach any position on the surface of the working roll 2 that requires grinding, and at the same time can adapt to different surface shapes of the working roll 2, thereby improving the comprehensiveness and pertinence of the grinding.

[0035] Exemplarily, the first mechanical arm 520 includes an upper arm and a lower arm, wherein the upper arm is rotatably connected to the first base 510, and the lower arm is rotatably connected to the upper arm. Two servo motors are fixedly arranged on the first mechanical arm 520, wherein one servo motor is connected to the upper arm for driving the upper arm to rotate relative to the first base 510, and the other servo motor is connected to the lower arm for driving the lower arm to rotate relative to the upper arm. This structure of multi-layer rotation connection and driven by servo motors allows the first mechanical arm 520 to change its posture in multiple dimensions. The rotation of the upper arm relative to the first base 510 and the rotation of the lower arm relative to the upper arm enable the first mechanical arm 520 to adjust its angle within a larger spatial range, thereby better adapting to different positions and shapes of the surface of the working roller 2, and creating conditions for good contact between the grinding piece 540 and the surface of the working roller 2.

[0036] For example, the driving member 530 is a hydraulic motor or an electric motor, etc., which is fixed to the end of the forearm by bolt connection; the grinding member 540 is a cubic boron nitride shaped grinding wheel, a diamond grinding wheel, or a silicon carbide grinding wheel, etc., and the output shaft of the hydraulic motor is connected to the transmission shaft through a coupling, thereby driving the cubic boron nitride shaped grinding wheel to rotate and grind at high speed. At the same time, a protective cover 550 is also fixedly connected to the forearm, which is used to prevent the splashing of grinding chips generated during the grinding process, and also plays a certain protective role for the hydraulic motor.

[0037] It should be noted that the power source of the hydraulic motor is the hydraulic motor control system. The hydraulic pump extracts hydraulic oil from the oil tank and delivers the hydraulic oil to the hydraulic motor through a series of valves and pipelines (such as the main pressure oil pipe, the main return oil pipe, the control oil pipe, the oil drain pipe, etc., and a circuit consisting of a relief valve, a two-position four-way reversing solenoid valve, a one-way valve, a cooler, a filter, etc.), thereby pushing the piston or blades and other components inside the hydraulic motor to move. Under the action of the hydraulic oil, the output shaft of the hydraulic motor begins to rotate. Through the coupling, the hydraulic motor transmits the rotational power to the transmission shaft, and the transmission shaft drives the cubic boron nitride profiled grinding wheel to rotate at high speed. Various valves (such as relief valves, one-way valves, etc.) in the hydraulic motor control system can adjust the working pressure, flow and other parameters of the hydraulic motor according to actual needs. For example, when the grinding resistance increases, the pressure and flow of the hydraulic oil can be appropriately increased through the adjustment of the relief valve, etc., to ensure the stability of the output torque and speed of the hydraulic motor and maintain a stable grinding effect. At the same time, the cooler can cool the hydraulic oil to prevent the hydraulic system from malfunctioning due to excessive oil temperature, ensuring that the hydraulic motor can operate normally during long-term grinding work. A significant advantage of the hydraulic motor is that it can provide high torque. When grinding the working roll 2, especially for large corrugated rolls and other situations that require greater grinding force, the high torque can ensure that the special-shaped grinding wheel can effectively remove the material on the surface of the working roll 2, whether it is a worn part or oxide scale. For example, when dealing with severe defects or thick oxide scale on the surface of the working roll 2, the hydraulic motor can drive the grinding wheel to grind with sufficient force, improving the grinding efficiency.

[0038] For example, the online roller grinding device provided by the present invention can realize three working modes, such as Fig.12 As shown, they are mode 1 (grinding mode for serious defects on the surface of working roll 2), mode 2 (eliminating step difference mode) and mode 3 (daily optimization mode for the surface quality of working roll 2).

[0039] like Fig.13As shown, mode 1 (grinding mode at serious defects on the surface of working roll 2) is: during the operation of working roll 2, the detection component 8 (including components such as image sensor 830) monitors the surface of working roll 2 in real time. When a serious defect is detected on the surface of working roll 2, image sensor 830 obtains defect image information, converts this information into an electrical signal, transmits it to the host computer, and issues an alarm signal. After receiving the alarm signal, the host computer notifies the operator. The operator determines the appropriate shutdown time and position according to the current production environment and the operating status of working roll 2 to ensure safety during the grinding operation. After the detection component 8 finds the defect, it further locates the defect area and determines its coordinate information on the surface of working roll 2. These coordinate information are transmitted to PLC (programmable logic controller) through the communication line to provide accurate position basis for subsequent grinding operations. After receiving the coordinate information of the defect area, PLC (programmable logic controller) serves as the control center of the entire system and issues control instructions to each related component to prepare for the grinding operation. According to the instruction of the PLC (Programmable Logic Controller), the second moving assembly 6 drives the repair assembly 7 to move to the axial position corresponding to the defect on one side of the working roll 2. Then, the repair assembly 7 performs additive repair operation on the defective area on the surface of the working roll 2 to repair the surface of the working roll 2. When the repair assembly 7 completes the repair work on the defective area, the second lead screw 630 in the second moving assembly 6 drives the repair assembly 7 to return to the initial position on the far left. At the same time, the working roll 2 rotates under the operation of the control system, so that the grinding area of ​​the working roll 2 is transferred to the side of the grinding assembly 5, ready for the next grinding operation. After receiving the instruction of the PLC, the first moving assembly 4 drives the grinding assembly 5 (including the grinding piece 540, etc.) to move to the axial position corresponding to the defect. Then, through the operation of the motor rotation in the first mechanical arm 520, the grinding piece 540 is attached to the surface of the working roll 2, ready for grinding. The driving member 530 (such as a hydraulic motor or an electric motor, etc.) in the grinding assembly 5 is started to drive the grinding piece 540 to rotate at a high speed. Within a set fixed time period, the surface of the working roller 2 is ground, that is, the repaired area is ground to make its surface smooth and consistent with the surface quality of other parts of the working roller 2. When the grinding task is completed, the first moving component 4 drives the grinding component 5 to return to the initial position on the far right. The detection component 8 detects the surface of the working roller 2 again to check whether the surface quality after grinding meets the requirements, including checking the surface flatness and whether there are any unrepaired defects. When the detection component 8 confirms that the grinding task is completed and the quality is qualified, it sends a task completion signal to the upper computer, and the grinding operation of the serious defects on the surface of the working roller 2 in the entire mode 1 is completed.

[0040] like Fig.14As shown, mode 2 (eliminating step difference mode) is: during the operation of the working roll 2, the detection component 8 continuously detects the surface of the working roll 2. When it is found that there is a step difference or other unqualified quality condition on the surface of the working roll 2, the image sensor 830 obtains relevant surface information, converts this information into an electrical signal and transmits it to the host computer, and issues an alarm signal. After receiving the alarm signal, the host computer notifies the operator. The operator determines the appropriate shutdown time and position according to the current production environment and the operating status of the working roll 2 to ensure the safety of the subsequent grinding operation. After the detection component 8 finds defects such as step difference, it locates the defective area and determines its coordinate information on the surface of the working roll 2. These coordinate information are transmitted to the PLC (programmable logic controller) through the communication line to provide an accurate position basis for the subsequent grinding operation. After receiving the coordinate information of the defective area, the PLC, as the control center of the entire system, issues control instructions to each related component, including sending signals to the servo motor and hydraulic motor control system, coordinating the actions of each component, and preparing for the grinding operation of eliminating step difference. According to the instruction of the PLC, the first moving component 4 drives the grinding component 5 to move to the axial position corresponding to the step difference defect. Then, by rotating the motor in the first mechanical arm 520 and other operations, the grinding piece 540 is made to fit with the surface of the working roller 2 and is ready for grinding. The driving member 530 (such as a hydraulic motor or an electric motor, etc.) in the grinding assembly 5 is started to drive the grinding piece 540 to rotate at high speed. Within a set fixed time period, the step area on the surface of the working roller 2 is ground to make its surface flat and eliminate the step. When the grinding task is completed, the first moving assembly 4 drives the grinding assembly 5 to return to the middle station position. The detection assembly 8 detects the surface of the working roller 2 again to check whether the step is eliminated after grinding and whether the surface quality meets the requirements, including checking the surface flatness, etc. When the detection assembly 8 confirms that the step is eliminated and the surface quality is qualified, it sends a task completion signal to the upper computer, and the entire mode 2 step elimination grinding operation is completed.

[0041] like Fig.15As shown, mode three (daily optimization of the surface quality of working roll 2 mode) is: first, the operator issues an operation command through the host computer, and the command is received by the PLC (programmable logic controller). The PLC (programmable logic controller) serves as the control center and outputs control signals to multiple servo motors and hydraulic control systems after receiving the command. The first drive motor 420 starts after receiving the signal, and drives the first lead screw 430 to rotate through the first coupling 440. Since the first moving member 450 is connected to the first lead screw 430 through a threaded transmission, the first moving member 450 moves toward the leftmost station (the first station) as the first lead screw 430 rotates. When the first moving member 450 moves to the leftmost station, the first drive motor 420 stops rotating and brakes, fixing the first moving member 450 at this position. Next, the servo motor fixed on the first mechanical arm 520 is started, and the upper arm and the lower arm are driven to move to the preset spatial coordinate position respectively, so that the grinding piece 540 is in contact with the surface of the working roller 2. After that, the hydraulic motor is started, and the grinding piece 540 is driven to rotate at high speed for a fixed time for grinding (at this time, the working roller 2 is in an idling state of low-speed operation). When the working roller 2 rotates one circle, that is, the grinding task of the station is completed, the hydraulic motor stops rotating and raises the position of the first mechanical arm 520, and the first drive motor 420 is started again, driving the first moving piece 450 to move right to the next station, and then repeating the above-mentioned first mechanical arm 520 posture adjustment and grinding action. Such station movement, posture adjustment, and grinding process are repeated until the station is the last station. When the task of the last station is completed, the first moving piece 450 returns to the first station to stand by. In this process, the detection component 8 will perform two tests. It is detected once at the last station to check the surface quality of the working roller 2 after the last grinding. After returning to the first workstation, the machine is tested again to comprehensively monitor the status of the entire working roll 2 after operation, and the monitoring data is transmitted to the host computer to provide a basis for subsequent operations or analysis.

[0042] As a possible implementation, Figure 4 As shown, the online roller grinding device also includes a second movable component 6 and a repair component 7. The second movable component 6 is fixedly connected to the frame 1, and the second movable component 6 is arranged on the other side of the working roller 2; the repair component 7 is arranged on the second movable component 6, and the second movable component 6 is used to adjust the axial position of the repair component 7 relative to the working roller 2, and the repair component 7 is used to perform additive repair on the surface defects of the working roller 2.

[0043] The second moving assembly 6 is fixedly mounted on the frame 1 and is located on the other side of the working roll 2. The repair assembly 7 is arranged on the second moving assembly 6. The second moving assembly 6 can adjust the axial position of the repair assembly 7 relative to the working roll 2, so that the position of the repair assembly 7 can be flexibly adjusted according to the surface defects of the working roll 2, so as to accurately perform additive repair on the surface defects.

[0044] During the working process, firstly, the defect position on the surface of the working roll 2 is determined by detection means (including visual inspection, ultrasonic detection, etc.), and the repair component 7 is driven by the second moving component 6 to move along the axial direction of the working roll 2 to the position where the defect is located. After the repair component 7 reaches the specified position, according to the specific conditions of the defect (such as the size, depth, shape, etc. of the defect), the defect is repaired by using appropriate additive repair technology (such as arc surfacing, selective laser sintering technology, etc.).

[0045] By arranging the second moving assembly 6 and the repair assembly 7 on the other side of the working roll 2, in cooperation with the first moving assembly 4 and the grinding assembly 5, the working roll 2 can be repaired in an all-round manner. Whether the wear on the surface of the working roll 2 requires grinding, or the existing defects require additive repair, they can be processed without disassembling the working roll 2. Online repair of the working roll 2 avoids the cumbersome process of disassembling the working roll 2 and transporting it to a special repair workshop for repair, reduces downtime, and improves production efficiency. At the same time, since the defects on the surface of the working roll 2 can be repaired in time, product quality problems caused by damage to the working roll 2 and the cost of frequently replacing the working roll 2 are avoided, thereby reducing production costs.

[0046] As a possible implementation, Fig. 9As shown, the second moving assembly 6 includes a second support seat 610, a second drive motor 620, a second lead screw 630, a second coupling 640, a second moving member 650 and a second guide rail 660, wherein the second support seat 610 is fixedly connected to the frame 1, and a second support member 611 is fixedly arranged at one end of the second support seat 610; the second drive motor 620 is fixedly arranged at the other end of the second support seat 610; the second lead screw 630 is arranged on the second support seat 610 and is rotatably connected to the first support member 411, the axis of the first lead screw 430 is parallel to the axis of the working roll 2, and one end of the second lead screw 630 is connected to the second support seat 610. It is connected to the second drive motor 620, and the second drive motor 620 is used to drive the second lead screw 630 to rotate; the second coupling 640 is respectively connected to the second drive motor 620 and the second lead screw 630; the second movable member 650 is threadedly connected to the second lead screw 630, and a repair component 7 is fixedly arranged on the second movable member 650, and the second movable member 650 is used to adjust the axial position of the repair component 7 relative to the working roller 2; the second guide rail 660 is fixedly arranged on the second support seat 610, and the second guide rail 660 is arranged parallel to the second lead screw 630, and the second movable member 650 cooperates with the second guide rail 660 in guiding movement.

[0047] The second support seat 610 is fixedly mounted on the frame 1, providing a stable mounting base for other components of the second movable assembly 6, and a second support member 611 is fixed at one end thereof, and the second support member 611 provides a support point for the rotation of the second lead screw 630, thereby ensuring the stability of the second lead screw 630 during the rotation process; the second drive motor 620 is fixed at one end of the second support seat 610, and is connected to the second lead screw 630 through a second coupling 640. This connection method enables the power of the second drive motor 620 to be effectively transmitted to the second lead screw 630 to drive it to rotate, and the second coupling 640 plays the role of connecting and transmitting torque, and at the same time The installation error between the motor shaft and the screw shaft can be compensated to a certain extent to ensure the stability of power transmission; the second screw 630 is arranged on the second support seat 610 and is rotatably connected with the second support member 611, and its axis is parallel to the axis of the working roller 2; the second moving member 650 is connected to the second screw 630 through a threaded transmission, and when the second screw 630 rotates under the drive of the second drive motor 620, the second moving member 650 can move axially along the second screw 630; the second guide rail 660 is fixed on the second support seat 610 and is parallel to the second screw 630, and the second moving member 650 is guided and moved in coordination with the second guide rail 660. This ensures that the second moving member 650 will not rotate during the movement process, and can only make a linear motion along the direction of the second guide rail 660, so that the repair component 7 fixed on the second moving member 650 can accurately move in the axial direction of the working roller 2.

[0048] For example, Fig. 9As shown, a second protective member 670 is provided on the side wall of the second support seat 610 and in a direction parallel to the axis of the second lead screw 630. The second protective member 670 is located between the working roller 2 and the second movable assembly 6, and its function is to prevent the working roller 2 from colliding with the various components of the second movable assembly 6 and debris from entering the second movable assembly 6 in the working state, thereby improving the stability of the device. Further, a card slot is provided at both ends of the second support seat 610, respectively, near the second drive motor 620 and the second support member 611. The extending direction of the card slot is perpendicular to the axis of the second lead screw 630, and the card slot is used to engage with the second protective member 670, so that the second protective member 670 can be slid up and down and connected to the second support seat 610, so that the height of the second protective member 670 can be adjusted to better protect the various components of the second movable assembly 6. Optionally, the second protective member 670 may be a second protective plate having a longitudinal protective portion and a transverse protective portion, wherein the longitudinal protective portion is located on a side of the second movable member 650 close to the working roll 2 , and the transverse protective portion is located on an upper portion of the second movable member 650 .

[0049] Furthermore, if Fig.10 As shown, two second protection members 670 are provided, which are respectively disposed on both sides of the second support base 610 .

[0050] When the working roll 2 needs to be repaired, the second drive motor 620 is started, and the rotational power of the motor is transmitted to the second lead screw 630 through the second coupling 640, so that the second lead screw 630 drives the second moving member 650 to move, and then the repair assembly 7 moves to the position where the working roll 2 needs to be repaired. The precise position adjustment of the repair assembly 7 in the axial direction of the working roll 2 is realized, which can ensure that the repair assembly 7 accurately reaches the position that needs to be repaired, and improve the accuracy of the repair.

[0051] Exemplarily, the second moving member 650 is a rectangular block with a threaded hole and a through hole, and the second lead screw 630 is inserted into the threaded hole to perform threaded transmission with the rectangular block; the second guide rail 660 is inserted into the through hole to ensure that the rectangular block can only move in a direction parallel to the working roll 2 under the drive of the second lead screw 630. The design of the rectangular block provides two platforms for the repair component 7, ensuring the stability of the repair component 7 when it reaches the position to be repaired and the stability during the repair process.

[0052] As a possible implementation, Figure 5As shown, the repair component 7 includes a second base 710, a second robotic arm 720 and a laser cladding mechanism 730, wherein the second base 710 is fixedly arranged on the second moving component 6; the second robotic arm 720 is rotatably connected to the second base 710; the laser cladding mechanism 730 is arranged at one end of the second robotic arm 720, and the laser cladding mechanism 730 is used to perform additive repair on the surface defects of the working roller 2.

[0053] The second base 710 is fixed on the second moving assembly 6. The second moving assembly 6 can adjust its position in the axial direction, and the second base 710 moves with it, so as to determine the position of the entire grinding assembly 5 in the axial direction of the working roll 2. The second mechanical arm 720 is installed on the second base 710 by a rotating connection. This rotating connection allows the second mechanical arm 720 to change its angle within a certain range relative to the second base 710, so that the second mechanical arm 720 can adjust its posture in space to better adapt to different positions and shapes on the surface of the working roll 2. The laser cladding mechanism 730 is arranged at one end of the second mechanical arm 720. The rotation of the second mechanical arm 720 can drive the laser cladding mechanism 730 to move in space, and accurately send the laser cladding mechanism 730 to the surface defect of the working roll 2. This connection mode between the laser cladding mechanism 730 and the second mechanical arm 720 ensures that during the repair process, the laser cladding mechanism 730 can maintain a suitable posture and position under the adjustment of the second mechanical arm 720, so as to effectively perform additive repair on the defect.

[0054] Exemplarily, the second mechanical arm 720 includes an upper arm and a lower arm, wherein the upper arm is rotatably connected to the second base 710, and the lower arm is rotatably connected to the upper arm. Two servo motors are fixedly arranged on the second mechanical arm 720, wherein one servo motor is connected to the upper arm for driving the upper arm to rotate relative to the second base 710, and the other servo motor is connected to the lower arm for driving the lower arm to rotate relative to the upper arm. This structure of multi-layer rotation connection and driven by servo motors allows the second mechanical arm 720 to change its posture in multiple dimensions. The rotation of the upper arm relative to the second base 710 and the rotation of the lower arm relative to the upper arm enable the second mechanical arm 720 to adjust its angle within a larger spatial range, thereby better adapting to different positions and shapes of the surface of the working roll 2, and creating conditions for the laser cladding mechanism 730 to better repair the surface of the working roll 2.

[0055] As a possible implementation, Figure 1 or Figure 2As shown, the roll online grinding device further includes a detection assembly 8, which is fixedly mounted on the frame 1 and located above the working roll 2. This mounting position design enables the detection assembly 8 to comprehensively and timely observe the surface condition of the working roll 2. During the working, grinding and repairing of the working roll 2, the detection assembly 8 continuously monitors the surface of the working roll 2 and obtains information on the surface of the working roll 2.

[0056] Exemplarily, the detection component 8 may be a 3D laser scanning detection system, which can more accurately obtain three-dimensional information of the surface of the working roll 2. By emitting a laser beam and receiving reflected light, it can quickly generate a high-resolution three-dimensional model of the surface of the working roll 2, and can more accurately detect minor surface defects, wear and shape changes, and provide more detailed data for grinding and repairing.

[0057] In some embodiments, Fig.11 As shown, the detection component 8 includes: a frame 810, a first bracket 820 and an image sensor 830, wherein the frame 810 is fixedly connected to the frame 1; the first bracket 820 is fixedly connected to the frame 810; the image sensor 830 is fixedly arranged on the first bracket 820, and the image sensor 830 is used to obtain an image of the surface of the working roller 2.

[0058] The frame 810 is fixedly connected to the frame 1, providing a stable support structure for the entire detection assembly 8; the first bracket 820 is fixedly connected to the frame 810, further expanding the spatial structure of the detection assembly 8. As an intermediate connecting component, it connects the frame 810 with the image sensor 830 to ensure that the image sensor 830 is installed at a suitable position and angle so as to effectively detect the surface of the working roller 2; the image sensor 830 is fixedly set on the first bracket 820 and is in a stable and specific position. The position and posture of the first bracket 820 determine the observation angle and distance of the image sensor 830 relative to the surface of the working roller 2. Through this fixing method, the image sensor 830 can continuously and stably obtain the image of the surface of the working roller 2 without affecting the accuracy and continuity of image acquisition due to looseness or displacement.

[0059] During the working process of the working roller 2, the image sensor 830 continues to work and photographs the surface of the working roller 2 below. As the working roller 2 rotates, the image sensor 830 can obtain images of different positions on the surface of the working roller 2, record the changes in the surface of the working roller 2 during the grinding process in real time, and transmit these image data to the control system.

[0060] Furthermore, the detection assembly 8 also includes a second bracket 840 and an annular light source 850. The second bracket 840 is fixedly connected to the end of the first bracket 820 away from the frame body 810; the annular light source 850 is fixedly arranged on the second bracket 840, and the annular light source 850 is covered outside the lens of the image sensor 830. The design of the annular light source 850 surrounding the lens of the image sensor 830 can provide all-round and uniform illumination for the surface of the working roller 2. Compared with a light source in a single direction, the annular light source 850 can reduce the shadow caused by the angle of light, making the illumination on the surface of the working roller 2 more uniform. This is very important for obtaining high-quality and clear images, especially for some working rollers 2 with complex surface textures or minor defects. Good lighting conditions can improve the contrast and clarity of the image, which helps to more accurately detect the surface condition of the working roller 2. The presence of the annular light source 850 enhances the overall performance of the detection assembly 8, making the detection of the surface of the working roller 2 more accurate and stable. Regardless of how the surface material or roughness of the working roll 2 changes, the annular light source 850 can provide a relatively stable lighting environment, ensuring that the images collected by the image sensor 830 are repeatable and comparable. This helps to timely and accurately detect small changes on the surface of the working roll 2 during long-term testing, providing strong support for the stable operation of the entire working roll 2 online grinding system.

[0061] As a possible implementation, there are two detection assemblies 8, which are respectively arranged on both sides of the working roll 2 and are fixedly connected to the frame 1 through their respective frames 810. This symmetrically distributed installation method enables them to observe the surface of the working roll 2 from different angles. The connection relationship between the frame 810, the first bracket 820, the second bracket 840, the image sensor 830, the annular light source 850 and other components inside each detection assembly 8 is as described above, maintaining a stable and reasonable structural layout, each independently plays a role in the surface detection of the working roll 2 on its side, and at the same time cooperates with each other to achieve more comprehensive detection coverage.

[0062] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0063] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A roller online grinding device, characterized in that: include: frame; A working roll, wherein the working roll is rotatably arranged on the frame; A pressing assembly, the pressing assembly being arranged on the frame and used for pressing down the working roll so that the working roll contacts the workpiece; A first moving assembly, wherein the first moving assembly is fixedly connected to the frame and is disposed on one side of the working roll; A grinding assembly, wherein the grinding assembly is arranged on the first movable assembly, the first movable assembly is used to adjust the axial position of the grinding assembly relative to the working roll, and the grinding assembly is used to grind the surface of the working roll; A second moving assembly, the second moving assembly is fixedly connected to the frame, and the second moving assembly is arranged on the other side of the working roll; A repair component is arranged on the second movable component, the second movable component is used to adjust the axial position of the repair component relative to the working roller, and the repair component is used to perform additive repair on the surface defects of the working roller.

2. The roller online grinding device according to claim 1, characterized in that: The first moving component comprises: A first support base, the first support base is fixedly connected to the frame, and a first support member is fixedly provided at one end of the first support base; A first driving motor, wherein the first driving motor is fixedly disposed at the other end of the first supporting base; A first lead screw, which is disposed on the first support seat and is rotatably connected to the first support member, wherein the axis of the first lead screw is parallel to the axis of the working roll, and one end of the first lead screw is connected to the first drive motor, and the first drive motor is used to drive the first lead screw to rotate; A first coupling, the first coupling being connected to the first drive motor and the first lead screw respectively; a first movable member, the first movable member being threadedly connected to the first lead screw, the grinding assembly being fixedly arranged on the first movable member, and the first movable member being used for adjusting an axial position of the grinding assembly relative to the working roll; The first guide rail is fixedly disposed on the first support seat, the first guide rail is disposed parallel to the first lead screw, and the first moving member is guided and moved in cooperation with the first guide rail.

3. The roller online grinding device according to claim 1, characterized in that: The grinding assembly comprises: A first base, fixedly disposed on the first moving component; A first mechanical arm, the first mechanical arm is rotatably connected to the first base; A driving member, the driving member is fixedly connected to one end of the first mechanical arm; A grinding piece is connected to the driving piece, and the driving piece is used to drive the grinding piece to grind the working roll.

4. The on-line roller grinding device according to claim 1, characterized in that: The second moving component comprises: A second support base, the second support base is fixedly connected to the frame, and a second support member is fixedly provided at one end of the second support base; A second driving motor, wherein the second driving motor is fixedly disposed at the other end of the second supporting base; A second lead screw, the second lead screw is disposed on the second support seat and is rotatably connected to the second support member, the axis of the second lead screw is parallel to the axis of the working roll, one end of the second lead screw is connected to the second drive motor, and the second drive motor is used to drive the second lead screw to rotate; A second coupling, the second coupling being connected to the second drive motor and the second lead screw respectively; a second movable member, the second movable member being threadedly connected to the second lead screw, the repair assembly being fixedly arranged on the second movable member, and the second movable member being used for adjusting the axial position of the repair assembly relative to the working roll; The second guide rail is fixedly arranged on the second support seat, the second guide rail is arranged parallel to the second lead screw, and the second moving member is guided and moved in cooperation with the second guide rail.

5. The on-line roller grinding device according to claim 1, characterized in that: The repair component comprises: A second base, fixedly disposed on the second moving assembly; a second mechanical arm, the second mechanical arm being rotatably connected to the second base; A laser cladding mechanism is disposed at one end of the second robotic arm and is used for additively repairing surface defects of the working roll.

6. The on-line roller grinding device according to any one of claims 1 to 5, characterized in that: The online roller grinding device also includes a detection component, which is fixedly connected to the frame and located above the working roller. The detection component is used to detect the surface of the working roller.

7. The on-line roller grinding device according to claim 6, characterized in that: The detection component comprises: A frame body, the frame body being fixedly connected to the frame; A first bracket, the first bracket is fixedly connected to the frame; An image sensor is fixedly arranged on the first bracket, and is used to obtain an image of the surface of the working roller.

8. The on-line roller grinding device according to claim 7, characterized in that: The detection component also includes: A second bracket, the second bracket is fixedly connected to an end of the first bracket away from the frame body; An annular light source is fixedly disposed on the second bracket, and the annular light source cover is disposed outside the lens of the image sensor.

9. The on-line roller grinding device according to claim 6, characterized in that: The number of the detection components is two, and the two detection components are respectively arranged on both sides of the working roll.

Images