Hot-rolled stainless steel strip correction device

Abstract

The present application relates to hot-rolled stainless steel strip production technology field, especially provide hot-rolled stainless steel strip deviation rectifying device, including support base, deviation rectifying roller, left bearing seat, right bearing seat, left pressure sensor, right pressure sensor, vertical pin shaft, guide rail, servo cylinder, controller and fish eye joint bearing;The deviation rectifying roller is horizontally arranged above the support base, and the hot-rolled stainless steel strip is wrapped around the upper surface of the deviation rectifying roller and is conveyed forward;The left pressure sensor is arranged between the left bearing seat and the support base, used for bearing and detecting the vertical bearing pressure transmitted by the left bearing seat;Relying on the change rule of the pressure borne by both ends when the steel strip runs off, the deviation direction and the deviation amount are determined, the deviation rectifying roller is driven by the servo cylinder to slightly deflect with the vertical pin shaft as fulcrum, the vertical pressure of both ends of the deviation rectifying roller is collected in real time and the pressure difference is compared, the steel strip running off state is quickly identified, and the full-automatic intelligent pressure sensing deviation rectification of the steel strip is realized.

Description

Technical Field

[0001] This invention relates to the field of hot-rolled stainless steel strip production technology, and in particular to a hot-rolled stainless steel strip correction device. Background Technology

[0002] In industrial production lines for continuous rolling and conveying of hot-rolled stainless steel strip, the strip maintains constant tension as it moves forward. Influenced by multiple objective factors, including upstream mill rolling precision deviations, coaxiality errors in conveyor roller installation, inherent strip shape defects, equipment vibrations at the production site, and instantaneous tension fluctuations, lateral deviation and misalignment of the strip are inevitable during continuous movement. If this misalignment is not corrected promptly, it will directly rub against the sides of the mill stand and surrounding components, causing surface quality defects such as scratches, missing edges, and curling, reducing the finished product yield. Severe misalignment can also lead to strip stacking, bending, or even breakage, forcing an emergency shutdown for maintenance, significantly impacting the continuous production efficiency of the entire hot-rolling line, and increasing production losses and labor maintenance costs.

[0003] Currently, most hot-rolled stainless steel strip conveyor production lines are equipped with conventional photoelectric automatic alignment devices. However, the high temperature radiation, high humidity, and large amount of iron oxide dust in the hot rolling environment make the photoelectric detection elements highly susceptible to environmental interference, resulting in unstable detection signals, frequent alignment failures, and poor actual performance. Therefore, existing alignment equipment is difficult to meet the production requirements of long-term continuous and stable alignment of steel strips. Summary of the Invention

[0004] To solve the above problems, the present invention provides a hot-rolled stainless steel strip correction device, including a support base, a correction roller, a left bearing seat, a right bearing seat, a left pressure sensor, a right pressure sensor, a vertical pin, a guide rail, a servo electric cylinder, a controller, and a fisheye joint bearing. The correction roller is horizontally mounted above the support base, and the hot-rolled stainless steel strip is attached to the upper surface of the correction roller, wrapped around it, and conveyed forward. The left and right bearing seats are respectively assembled on the left and right shaft ends of the straightening roller; the left pressure sensor is set between the left bearing seat and the support base to bear and detect the vertical bearing pressure transmitted by the left bearing seat; the right pressure sensor is set between the right bearing seat and the support base to bear and detect the vertical bearing pressure transmitted by the right bearing seat. The vertical pin is vertically positioned at the left end of the support base. The left bearing seat is rotatably mounted on the left end of the support base via the vertical pin, allowing the left bearing seat to rotate only slightly around the vertical pin in the horizontal plane. The guide rail is fixedly mounted on the support base, and the right bearing seat is slidably mounted on the guide rail. The tail of the servo electric cylinder is hinged to the support base, and its output push rod end is equipped with a fisheye spherical bearing, which is hinged to the right bearing seat. The servo electric cylinder is used to drive the right bearing seat to reciprocate along the guide rail. The controller is electrically connected to the left pressure sensor, the right pressure sensor, and the servo cylinder respectively. The controller determines the offset direction and amount of the hot-rolled stainless steel strip based on the difference in pressure values ​​collected by the left and right pressure sensors, and outputs a control signal to drive the servo cylinder to push and pull the right bearing seat, so that the straightening roller generates a small deflection angle in the horizontal plane with the vertical pin shaft as the rotation center. The lateral friction force generated between the steel strip and the straightening roller drives the steel strip to automatically center and correct its deviation.

[0005] More preferably, a first polyurethane plate is mounted on the top surface of the support base, and the vertical pin passes through the top surface of the first polyurethane plate and is rotatably connected to the left bearing seat. The bottom surface of the left bearing seat is in contact with the top surface of the first polyurethane plate. The fixed end of the left pressure sensor is fixed to the top surface of the support base, and the sensing end passes upward through the first polyurethane plate and abuts against the bottom surface of the left bearing seat. A slider is slidably adapted on the guide rail, and a second polyurethane plate is fixed on the top surface of the slider. The top surface of the second polyurethane plate is flush with the top surface of the first polyurethane plate. The bottom surface of the right bearing seat is fixed to the top surface of the second polyurethane plate, and the fixed end of the right pressure sensor is fixed to the top surface of the slider. The sensing end passes upward through the second polyurethane plate and abuts against the bottom surface of the right bearing seat.

[0006] More preferably, the extension direction of the guide rail is arc-shaped according to the travel direction of the hot-rolled stainless steel strip, and the two ends of the arc symmetrically extend beyond the front and rear sides of the support base.

[0007] More preferably, mechanical limit blocks are provided at both ends of the guide rail. The mechanical limit blocks are used to limit the maximum sliding stroke of the right bearing seat and limit the maximum deflection angle of the correction roller.

[0008] More preferably, the controller has a preset pressure difference dead zone threshold; when the difference detected by the left and right pressure sensors is less than the dead zone threshold, the controller controls the servo electric cylinder to lock and remain stationary.

[0009] In a further preferred embodiment, the servo electric cylinder is provided with a double-ear hinged support at its tail end, which is fixed to the support base, allowing the servo electric cylinder body to swing slightly adaptively.

[0010] More preferably, the wrap angle of the steel strip on the surface of the straightening roller is 40° to 60°.

[0011] More preferably, the surface of the correction roller is provided with a rubber anti-slip layer, and the surface of the rubber anti-slip layer is provided with friction texture.

[0012] The advantages of this invention compared to the prior art are: By setting up two sets of pressure sensors on the left and right sides to detect the vertical pressure at both ends of the correction roller, and comparing the pressure difference in real time with the controller, the direction and amount of deviation are determined based on the pressure change pattern at both ends when the steel strip deviates. With the help of a servo electric cylinder to drive the correction roller to deflect slightly around the vertical pin shaft, the vertical pressure at both ends of the correction roller is collected in real time and the pressure difference is compared to quickly identify the steel strip deviation status, realizing fully automatic intelligent pressure sensing and correction of the steel strip without relying on optical detection elements such as photoelectric and vision. This detection method that combines mechanical and intelligent methods solves the problems of traditional optical correction devices being easily interfered with, failing to detect, and failing to correct deviation under the harsh conditions of high temperature, water vapor, and dust in the hot-rolled steel strip production site. At the same time, it avoids the defects of pure mechanical passive correction, such as lag in response and poor correction accuracy. The whole system relies on pure mechanical pressure signals to complete closed-loop intelligent correction, which has strong detection stability, simple structure, and effectively avoids production failures and material losses caused by steel strip deviation. Attached Figure Description

[0013] Figure 1 This is a top view of the hot-rolled stainless steel strip straightening device described in an embodiment of the present invention. Figure 2 This is a three-dimensional schematic diagram of the hot-rolled stainless steel strip correction device described in an embodiment of the present invention; Figure 3 This is a schematic diagram from a first-view perspective of the disassembled hot-rolled stainless steel strip correction device described in an embodiment of the present invention. Figure 4 This is a schematic diagram from a second perspective after disassembly of the hot-rolled stainless steel strip correction device described in an embodiment of the present invention. Figure 5 This is a partial schematic diagram from a third-person perspective, showing the disassembled hot-rolled stainless steel strip correction device described in an embodiment of the present invention. Figure 6 This is a schematic diagram illustrating the principle of the hot-rolled stainless steel strip correction device described in this invention when the steel strip is conveyed at a wrap angle of 40° to 60° on the surface of the correction roller.

[0014] In the diagram: 1. Support base; 2. Correcting roller; 3. Left bearing seat; 4. Right bearing seat; 5. Left pressure sensor; 6. Right pressure sensor; 7. Vertical pin; 8. Guide rail; 9. Servo cylinder; 10. Controller; 11. Double-ear hinged support; 12. First polyurethane plate; 13. Slider; 14. Second polyurethane plate; 15. Mechanical limit stop; 16. Rubber anti-slip layer. Detailed Implementation

[0015] The above and other embodiments and advantages 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, and not all embodiments.

[0016] In one implementation, such as Figures 1-6 As shown: This embodiment provides a hot-rolled stainless steel strip correction device, including a support base 1, a correction roller 2, a left bearing seat 3, a right bearing seat 4, a left pressure sensor 5, a right pressure sensor 6, a vertical pin 7, a guide rail 8, a servo electric cylinder 9, a controller 10, and a fisheye joint bearing. The straightening roller 2 is horizontally mounted above the support base 1, and the hot-rolled stainless steel strip is attached to the upper surface of the straightening roller, wrapped around it, and conveyed forward. The left bearing housing 3 and the right bearing housing 4 are respectively assembled on the left and right shaft ends of the straightening roller 2; the left pressure sensor 5 is set between the left bearing housing 3 and the support base 1, and is used to bear and detect the vertical bearing pressure transmitted by the left bearing housing 3; the right pressure sensor 6 is set between the right bearing housing 4 and the support base 1, and is used to bear and detect the vertical bearing pressure transmitted by the right bearing housing 4. A vertical pin 7 is vertically positioned at the left end of the support base 1. The left bearing seat 3 is rotatably mounted on the left end of the support base 1 via the vertical pin 7, so that the left bearing seat 3 can only rotate slightly around the vertical pin 7 in the horizontal plane. The guide rail 8 is fixedly mounted on the support base 1, and the extension direction of the guide rail 8 is parallel to the travel direction of the hot-rolled stainless steel strip. The right bearing seat 4 is slidably mounted on the guide rail 8. The tail of the servo electric cylinder 9 is hinged to the support base 1, and the end of its output push rod is equipped with a fisheye spherical bearing. The fisheye spherical bearing is hinged to the right bearing seat 4. The servo electric cylinder 9 is used to drive the right bearing seat 4 to slide back and forth along the guide rail 8. The controller 10 is electrically connected to the left pressure sensor 5, the right pressure sensor 6, and the servo cylinder 9 respectively. The controller 10 determines the offset direction and offset of the hot-rolled stainless steel strip based on the difference in pressure values ​​collected by the left pressure sensor 5 and the right pressure sensor 6, and outputs a control signal to drive the servo cylinder 9 to push and pull the right bearing seat 4, so that the straightening roller 2 generates a small deflection angle in the horizontal plane with the vertical pin shaft 7 as the rotation center. The lateral friction force generated between the steel strip and the straightening roller 2 drives the steel strip to automatically center and correct its deviation.

[0017] The following is a detailed description of some of the aforementioned components: The straightening roller 2 is horizontally mounted above the support base 1. During the production process, the hot-rolled stainless steel strip is fully wrapped around the upper surface of the straightening roller 2 and then conveyed forward. It should be clarified here that the steel strip wrapping only adheres to the upper arc surface of the straightening roller. The steel strip enters from the top of the roller and exits from the top, without passing around the bottom of the roller. There is no entanglement, knotting, or ring-shaped structure. The steel strip relies on its own running tension to tightly adhere to the upper side of the roller surface, forming a stable vertical downward pressure, which provides the basic force conditions for pressure testing.

[0018] Left bearing housing 3 and right bearing housing 4 are respectively mounted on the left and right shaft ends of the straightening roller 2, providing rotational support for both ends of the straightening roller 2. Left pressure sensor 5 is arranged between left bearing housing 3 and support base 1, fully bearing all the vertical pressure transmitted by left bearing housing 3, and detecting the vertical pressure value of the steel belt acting on the left side of the straightening roller 2 in real time. Right pressure sensor 6 is arranged between right bearing housing 4 and support base 1, fully bearing all the vertical pressure transmitted by right bearing housing 4, and detecting the vertical pressure value of the steel belt acting on the right side of the straightening roller 2 in real time. Both sets of pressure sensors only bear vertical loads, with no rigid limitations in the horizontal direction, ensuring that the downward pressure generated by the steel belt can be collected without loss.

[0019] The vertical pin 7 is fixed vertically to the left end of the support base 1. The left bearing seat 3 is rotatably assembled to the left end of the support base 1 via the vertical pin 7. The vertical pin 7 restricts the left bearing seat 3 so that the left bearing seat 3 can only rotate in the horizontal plane, so as to ensure that the left end of the correction roller 2 is the fulcrum of rotation and the vertical pin 7 is the swing center point that remains unchanged.

[0020] The guide rail 8 is fixedly installed on the upper end face of the support base 1 by bolts. The overall extension direction of the guide rail 8 is parallel to the normal travel direction of the hot-rolled stainless steel strip. The bottom of the right bearing seat 4 is matched with a slider and is slidably assembled on the guide rail 8 through the slider. The right bearing seat 4 can only slide along the guide rail 8.

[0021] The tail of the servo cylinder 9 is hinged to the support base 1. The end of the output push rod of the servo cylinder 9 is fixed with a fisheye spherical bearing, which is hinged to the right bearing seat 4. The fisheye spherical bearing can adaptively deflect small angles to compensate for the angular deviation generated during the swing of the correction roller and eliminate mechanical motion interference. As a power source, the servo cylinder 9 can stably drive the right bearing seat 4 to slide along the guide rail 8.

[0022] The controller 10 is electrically connected to the left pressure sensor 5, the right pressure sensor 6, and the servo cylinder 9 via signal lines. It receives pressure signals from the two pressure sensors in real time and outputs drive signals synchronously to control the extension and retraction of the servo cylinder 9.

[0023] The specific working principle is described in several working conditions as follows: First operating condition: The steel belt runs normally in the center (i.e., the steel belt does not deviate). At this point, the steel strip evenly covers both sides of the upper surface of the straightening roller 2, and the vertical downward pressure from the tension of the steel strip is evenly distributed at both ends of the straightening roller 2. The pressure value transmitted from the left bearing housing 3 to the left pressure sensor 5 is exactly equal to the pressure value transmitted from the right bearing housing 4 to the right pressure sensor 6, and the pressure difference detected by the two sets of pressure sensors is zero. After receiving the pressure difference signal, the controller 10 determines that the steel strip's running position is normal and no straightening action is needed. It then controls the servo cylinder 9 to remain locked, the right bearing housing 4 remains stationary, the straightening roller 2 remains horizontally aligned, and the steel strip continues to be conveyed forward smoothly.

[0024] Second working condition: the steel strip deviates laterally to the left (i.e., the steel strip deviates to the left). When the hot-rolled stainless steel strip shifts laterally to the left, more of the strip covers and adheres to the left side of the straightening roller 2, and the vertical clamping load on the left side increases simultaneously. Conversely, the strip coverage area on the right side decreases, and the vertical clamping load on the right side decreases simultaneously. At this time, the pressure sensor 5 detects an increase in pressure, while the pressure sensor 6 detects a decrease. The controller 10 calculates the pressure difference between the left and right sides in real time, accurately determining the leftward deviation of the strip and the corresponding deviation amount. Subsequently, the controller 10 outputs a control signal, driving the servo cylinder 9 to extend its push rod forward, pushing the right bearing seat 4 to slide along the guide rail 8. Because the left bearing seat 3 is limited and fixed by the vertical pin 7, it can only rotate in place. The straightening roller 2, with the vertical pin 7 as its rotation center, undergoes a slight (millimeter-level) counterclockwise deviation in the horizontal plane. The skewed straightening roller 2 generates lateral friction, which acts on the bottom of the steel strip, gradually pushing the leftward-shifted strip back to the center. Simultaneously, during the slight deflection of the straightening roller, the right bearing housing 4 generates a small following angle, which the fisheye joint bearing adaptively counteracts, preventing lateral torque on the servo cylinder push rod and eliminating cylinder jamming and component sticking issues. The servo cylinder 9 stops operating when the pressure difference between the left and right sides returns to the threshold range, completing the automatic correction of the leftward deviation.

[0025] Third working condition: Steel strip deviates laterally to the right (i.e., the steel strip deviates to the right). At this point, more of the steel strip covers and adheres to the right side of the straightening roller 2, and the vertical clamping load on the right side increases simultaneously. Conversely, the coverage area of ​​the steel strip on the left side decreases, and the vertical clamping load on the left side decreases simultaneously. At this time, the right pressure sensor 6 detects an increase in pressure, while the left pressure sensor 5 detects a decrease. The controller 10 calculates the pressure difference between the right and left sides in real time, accurately determining the rightward deviation of the steel strip and the corresponding deviation amount. Subsequently, the controller 10 outputs a reverse control signal, driving the servo cylinder 9 to retract its push rod, pulling the right bearing seat 4 to slide linearly backward along the guide rail 8. The straightening roller 2, still using the vertical pin 7 as its fixed rotation center, undergoes a slight clockwise tilt in the horizontal plane. Relying on the lateral friction between the roller surface and the steel strip, the rightward-shifted steel strip is gradually pushed back to the center position. Similarly, the angular deviation generated during the oscillation is entirely compensated by the fisheye spherical bearing, ensuring that the entire sliding drive structure operates smoothly without mechanical interference. The straightening action terminates when the pressure values ​​of the two sets of pressure sensors become consistent, and the steel strip returns to its centered running state.

[0026] This invention employs a differentiated support structure with a vertical pin hinge on the left and a guide rail sliding on the right, combined with a fisheye spherical bearing for angle compensation. A pressure sensor directly bears all the vertical pressure from the bearing housing throughout the entire process, resulting in higher detection accuracy and intelligent operation. The entire device relies on pressure difference to identify deviation, unaffected by the high temperatures, moisture, and dust in the hot rolling environment, making it suitable for harsh hot rolling production conditions. It features rapid automated correction response, smooth operation, and a longer service life.

[0027] Specifically, a first polyurethane plate 12 is installed on the top surface of the support base 1. A vertical pin 7 passes through the top surface of the first polyurethane plate 12 and is rotatably connected to the left bearing seat 3. The bottom surface of the left bearing seat 3 is in contact with the top surface of the first polyurethane plate 12. The fixed end of the left pressure sensor 5 is fixed to the top surface of the support base 1, and the sensing end passes upward through the first polyurethane plate 12 and abuts against the bottom surface of the left bearing seat 3. A slider 13 is slidably adapted on the guide rail 8. A second polyurethane plate 14 is fixed on the top surface of the slider 13. The top surface of the second polyurethane plate 14 is flush with the top surface of the first polyurethane plate 12. The bottom surface of the right bearing seat 4 is fixed to the top surface of the second polyurethane plate 14. The fixed end of the right pressure sensor 6 is fixed to the top surface of the slider 13, and the sensing end passes upward through the second polyurethane plate 14 and abuts against the bottom surface of the right bearing seat 4.

[0028] When the steel belt is being conveyed normally in the center, it is evenly attached to the upper surface of the straightening roller 2. The additional downward pressure generated on both sides is the same. The left pressure sensor 5 and the right pressure sensor 6 detect no pressure difference, the controller 10 does not output a control signal, the servo cylinder 9 remains locked, and the straightening roller 2 maintains a horizontal posture for stable belt feeding. When the steel belt deviates to the left, the area of ​​the steel belt attached to the roller on the left side increases, the additional downward pressure increases, and the left bearing seat 3 is pressed down. Relying on the elastic deformation of the first polyurethane plate 12, the downward load is completely transferred to the sensing end of the left pressure sensor 5, the pressure value on the left side rises, and at the same time the area of ​​the steel belt attached to the right side decreases, the additional pressure decreases, the right bearing seat 4 rises slightly, and the pressure value detected by the right pressure sensor 6 decreases synchronously. The controller 10 determines the direction of deviation based on the pressure difference and drives the servo cylinder 9 to push the slider 13 and the right bearing seat 4 to slide forward along the linear guide rail 8. The straightening roller 2 rotates around the vertical pin 7. The belt deviates slightly to the left, and the lateral friction of the roller surface drives the steel belt to gradually return to the correct position. When the steel belt deviates to the right, the additional downward pressure on the right side of the steel belt increases, pressing down on the right bearing seat 4. The second polyurethane plate 14 simultaneously undergoes elastic deformation and accurately feeds back the downward load to the sensing end of the right pressure sensor 6. The pressure value on the right side increases, and the pressure value on the left side decreases simultaneously. After receiving the pressure difference signal, the controller 10 controls the servo cylinder 9 to retract in the opposite direction, pulling the slider 13 and the right bearing seat 4 to slide backward. The correction roller 2 deviates slightly to the right, thereby pushing the deviated steel belt to the center position. The first polyurethane plate 12 and the second polyurethane plate 14 can, on the one hand, buffer the vibration of the equipment operation and the instantaneous impact of the steel belt, avoiding rigid vibration from interfering with the pressure detection accuracy. On the other hand, when there is an imbalance in the pressure on the left and right sides of the steel belt, they can effectively transmit the downward load of the bearing seat to the corresponding sensor sensing end without loss through their own slight elastic deformation, ensuring that the pressure signal is collected sensitively and accurately.

[0029] Meanwhile, the first polyurethane plate 12 and the second polyurethane plate 14 can buffer the vibration of the production line and the instantaneous impact of the steel belt, avoid vibration noise interference with the pressure detection signal, further improve the accuracy of differential pressure detection, and completely isolate the equipment's own weight from the pressure sensor, effectively extending the sensor's service life. The second polyurethane plate 14 is fixedly installed on the top surface of the slider 13, which allows the second polyurethane plate 14, the right bearing seat 4, and the right pressure sensor 6 to slide synchronously with the slider 13, ensuring that the detection data is tracked in real time.

[0030] Specifically, the extension direction of the guide rail 8 is set in an arc shape according to the travel direction of the hot-rolled stainless steel strip, and the two ends of the arc symmetrically extend beyond the front and rear sides of the support base 1.

[0031] Based on the correction motion of this device, it can be seen that the left end of the correction roller 2 is constrained by the vertical pin 7, and can only make a small arc swing in the horizontal plane with the vertical pin 7 as the fixed center. During the correction process, the movement trajectory of the right bearing seat 4 and the slider 13 is a standard arc trajectory with slight adjustments, rather than a straight trajectory. Therefore, the guide rail is set as an arc shape, which can completely fit the actual movement path of the right bearing seat 4 and match the swinging action of the correction roller 2, avoiding interference and other problems. At the same time, the support base 1 extends out of both ends of the arc-shaped guide rail, which can meet the maximum swing stroke requirement of the correction roller 2 in both directions, prevent the slider 13 from leaving the effective stroke of the guide rail during the sliding process, and ensure that the correction action can be completed smoothly throughout the entire range, further improving the smoothness and response accuracy of the entire correction mechanism.

[0032] Specifically, mechanical limit blocks are set at both ends of the guide rail 8 to limit the maximum sliding stroke of the right bearing seat 4 and limit the maximum deflection angle of the correction roller 2.

[0033] Specifically, the controller 10 has a preset pressure difference dead zone threshold. When the difference detected by the left and right pressure sensors is less than the dead zone threshold, the controller 10 controls the servo cylinder 9 to lock and remain stationary. The controller 10 has a pre-loaded and stored pressure difference dead zone threshold to filter out invalid pressure difference signals generated by vibration and minor load fluctuations during the steel belt conveying process, thus avoiding frequent misalignment of the device. In actual operation, the controller 10 collects the pressure detection values ​​of the left pressure sensor 5 and the right pressure sensor 6 in real time and calculates the real-time pressure difference. When the real-time pressure difference fed back by the two sets of pressure sensors is less than the preset dead zone threshold, it is determined that the steel belt is in a normal small fluctuation state within the allowable range and does not belong to an effective deviation fault. At this time, the controller 10 directly controls the servo cylinder 9 to lock and remain stationary, and the correction roller 2 maintains its current posture and remains stationary, eliminating equipment damage and steel belt conveying vibration caused by frequent start-stop of the cylinder and small reciprocating oscillation of the roller. Only when the real-time pressure difference is greater than the preset dead zone threshold, and it is determined that the steel belt has a real and effective deviation, will the controller 10 output a drive signal to control the servo cylinder 9 to act and carry out the corresponding correction adjustment operation.

[0034] Specifically, the servo electric cylinder 9 is equipped with a double-ear hinged support at its tail end. The double-ear hinged support is fixed to the support base 1, allowing the cylinder body of the servo electric cylinder 9 to swing slightly adaptively.

[0035] The double-eared hinged support is firmly installed on the top surface of the support base 1. The servo cylinder 9 is hinged to the support base 1 through the double-eared hinged support, allowing the servo cylinder 9 to make a small adaptive swing relative to the support base 1. During the correction operation, the right bearing seat 4 moves along the arc-shaped guide rail in an arc trajectory, and the push rod of the servo cylinder 9 will produce a slight angular deviation. The front end of the servo cylinder adapts to the angular deviation by relying on the fisheye joint bearing, and the rear end relies on the tail double-eared hinged support to realize the small rotation compensation of the cylinder body itself. The two-way adaptive angle adjustment avoids the servo cylinder body from being rigidly fixed and generating lateral torque throughout the process, eliminating dead point interference.

[0036] The wrap angle of the steel belt on the surface of the straightening roller 2 is 40° to 60°. Steel belt straightening relies on the lateral static friction between the roller surface and the steel belt to achieve displacement correction. The wrap angle directly determines the contact area and frictional resistance between the two: if the wrap angle is too small, the contact area between the steel belt and the straightening roller 2 is insufficient, the lateral frictional resistance is too small, and the straightening roller 2 cannot provide sufficient lateral traction force when it deflects slightly, making it difficult to quickly reset the offset steel belt, resulting in insufficient straightening response; if the wrap angle is too large, the area of ​​the steel belt wrapping around the roller body is too large, which will increase the bending stress of the steel belt during operation, easily causing surface deformation and stress damage, and increasing the resistance of the steel belt during transport. Simultaneously, if... Figure 6 As shown, limiting the wrapping angle to the optimal range of 40°~60° ensures sufficient and stable contact friction resistance between the steel belt and the straightening roller 2. When the straightening roller 2 swings slightly to the left and right around the vertical pin 7, it can smoothly drive the steel belt to generate lateral displacement synchronously by relying on the large lateral friction resistance of the roller surface, accurately completing the left and right adjustment and centering of the steel belt, taking into account both efficient straightening effect and safety of steel belt conveying, and avoiding problems such as steel belt scratches and stress deformation. In addition, in order to further improve the friction between the straightening roller 2 and the surface of the steel belt, the surface of the straightening roller 2 is provided with a rubber anti-slip layer 16, and the surface of the rubber anti-slip layer 16 is provided with friction texture.

[0037] The above orientation references do not represent the specific orientations of each component in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme and to make relative descriptions based on the orientations of the references. In reality, the specific orientations of each component are based on their actual installation and use, as well as the orientation descriptions that are customary to those skilled in the art. This is hereby stated.

[0038] The specific embodiments described above further illustrate the inventive purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, or improvements made by those skilled in the art within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A hot-rolled stainless steel strip correction device, characterized in that, It includes a support base (1), a correction roller (2), a left bearing seat (3), a right bearing seat (4), a left pressure sensor (5), a right pressure sensor (6), a vertical pin (7), a guide rail (8), a servo electric cylinder (9), a controller (10), and a fisheye joint bearing; The correction roller (2) is horizontally mounted above the support base (1), and the hot-rolled stainless steel strip is attached to the upper surface of the correction roller, wrapped around it, and conveyed forward. The left bearing housing (3) and the right bearing housing (4) are respectively assembled on the left and right shaft ends of the straightening roller (2); the left pressure sensor (5) is set between the left bearing housing (3) and the support base (1) to bear and detect the vertical bearing pressure transmitted by the left bearing housing (3); the right pressure sensor (6) is set between the right bearing housing (4) and the support base (1) to bear and detect the vertical bearing pressure transmitted by the right bearing housing (4); The vertical pin (7) is vertically set at the left end of the support base (1). The left bearing seat (3) is rotatably installed at the left end of the support base (1) through the vertical pin (7), so that the left bearing seat (3) can only rotate slightly around the vertical pin (7) in the horizontal plane. The guide rail (8) is fixedly installed on the support base (1), and the right bearing seat (4) is slidably assembled on the guide rail (8). The tail of the servo electric cylinder (9) is hinged to the support base (1), and its output push rod end is equipped with a fisheye joint bearing. The fisheye joint bearing is hinged to the right bearing seat (4). The servo electric cylinder (9) is used to drive the right bearing seat (4) to slide back and forth along the guide rail (8). The controller (10) is electrically connected to the left pressure sensor (5), the right pressure sensor (6), and the servo cylinder (9). The controller (10) determines the offset direction and offset of the hot-rolled stainless steel strip based on the difference in pressure values ​​collected by the left pressure sensor (5) and the right pressure sensor (6), and outputs a control signal to drive the servo cylinder (9) to push and pull the right bearing seat (4), so that the straightening roller (2) generates a small deflection angle in the horizontal plane with the vertical pin shaft (7) as the rotation center. The steel strip is automatically aligned and corrected by the lateral friction force generated between the steel strip and the straightening roller (2).

2. The hot-rolled stainless steel strip correction device according to claim 1, characterized in that, The top surface of the support base (1) is equipped with a first polyurethane plate (12). The vertical pin (7) passes through the top surface of the first polyurethane plate (12) and is rotatably connected to the left bearing seat (3). The bottom surface of the left bearing seat (3) is attached to the top surface of the first polyurethane plate (12). The fixed end of the left pressure sensor (5) is fixed to the top surface of the support base (1), and the sensing end passes upward through the first polyurethane plate (12) and abuts against the bottom surface of the left bearing seat (3). The guide rail (8) is slidably fitted with a slider (13). The top surface of the slider (13) is fixed with a second polyurethane plate (14). The top surface of the second polyurethane plate (14) is flush with the top surface of the first polyurethane plate (12). The bottom surface of the right bearing seat (4) is fixed to the top surface of the second polyurethane plate (14). The fixed end of the right pressure sensor (6) is fixed to the top surface of the slider (13), and the sensing end passes upward through the second polyurethane plate (14) and abuts against the bottom surface of the right bearing seat (4).

3. The hot-rolled stainless steel strip correction device according to claim 2, characterized in that, The extension direction of the guide rail (8) is arc-shaped according to the travel direction of the hot-rolled stainless steel strip, and the two ends of the arc symmetrically extend beyond the front and rear sides of the support base (1).

4. The hot-rolled stainless steel strip correction device according to claim 3, characterized in that, Mechanical limit blocks (15) are provided at both ends of the guide rail (8). The mechanical limit blocks (15) are used to limit the maximum sliding stroke of the right bearing seat (4) and limit the maximum deflection angle of the correction roller (2).

5. The hot-rolled stainless steel strip correction device according to claim 4, characterized in that, The controller (10) has a preset pressure difference dead zone threshold. When the difference detected by the left and right pressure sensors is less than the dead zone threshold, the controller (10) controls the servo cylinder (9) to lock and remain stationary.

6. The hot-rolled stainless steel strip correction device according to claim 5, characterized in that, The servo electric cylinder (9) is provided with a double-ear hinge support (11) at the tail end. The double-ear hinge support (11) is fixed on the support base (1), so that the cylinder body of the servo electric cylinder (9) can swing slightly adaptively.

7. The hot-rolled stainless steel strip correction device according to claim 6, characterized in that, The wrap angle of the steel strip on the surface of the straightening roller (2) is 40° to 60°.

8. The hot-rolled stainless steel strip correction device according to claim 7, characterized in that, The surface of the correction roller (2) is provided with a rubber anti-slip layer (16), and the surface of the rubber anti-slip layer (16) is provided with friction texture.

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