Plate strip self-adapting deviation rectifying and tension adjusting device based on pneumatic driving mode

Abstract

The application belongs to the technical field of metal rolling equipment, and particularly relates to a plate strip self-adaptive deviation rectification and tension adjusting device based on a pneumatic driving mode. The device comprises a rack, a conveying belt, a plate strip, a deviation detection system and a three-roller type tension roller group. The deviation detection system comprises a mounting frame and infrared sensors. The infrared sensors are at least two and symmetrically arranged on the left and right sides of the mounting frame. The three-roller type tension roller group comprises a first compression roller, a second compression roller and a three-section variable-diameter tension adjusting roller. The three-section variable-diameter tension adjusting roller comprises a roller shaft, a damping module, a power cylinder, a spherical valve, a roller lobe and an elastic friction layer. The damping module can greatly reduce the tension fluctuation of the system and improve the adjusting accuracy of the system. The three-section variable-diameter tension adjusting roller is independent of each other and can be controlled in sections to realize the tension adjusting and deviation adjusting functions. The application adopts the pneumatic driving mode and is provided with a self-adaptive damping mechanism, so that the response speed of the system is improved and the adjusting accuracy is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of metal rolling equipment, specifically relating to a strip adaptive correction and tension adjustment device based on pneumatic drive. Background Technology

[0002] Ultra-thin strip metal is widely used in electronics, aerospace, and automotive manufacturing, and is a type of metal strip with a particularly thin thickness. During strip metal production, the strip is conveyed from the unwinding mechanism to the work rolls via a series of idler rollers. Due to uneven strip tension and idler roller misalignment, strip misalignment is inevitable. If not corrected promptly, this can lead to scratches, dents, and other defects on the surface of the produced products, reducing surface quality. Severe strip misalignment may cause downtime for adjustments or even equipment accidents or safety hazards, affecting production safety.

[0003] Existing tension adjustment devices are mainly divided into two types. The first is the traditional three-roll tension roller assembly. This assembly consists of two fixed pressure rollers and a tension roller capable of vertical lifting and lowering. The tension is adjusted by changing the wrap angle of the strip around the tension roller as the tension roller moves up and down. The traditional three-roll tension roller assembly is simple in structure and safe and reliable, but its disadvantages include limited adjustment accuracy and the inability to adaptively adjust according to the actual tension distribution. The second type is a roller structure with adjustable positions, including running rollers, hydraulic drive components, a hydraulic tank, controllable valves, and a hydraulic pump. This device changes the relative position of the rollers through hydraulic drive components or rocker arms, thereby changing the strip conveying path and controlling the tension. This device is simple in structure and highly flexible, but its disadvantages include that the metal strip tension is not directly measured but calculated through hydraulic pressure or the force exerted on the rollers, reducing system accuracy. Furthermore, the extensive use of hydraulic drive components significantly affects the system's response speed.

[0004] Therefore, it is very important to design an adaptive tension adjustment system that has a reasonable and simple structure, a correction function, and a fast response. Summary of the Invention

[0005] The present invention aims to overcome the problems of limited adjustment accuracy, difficulty in adaptive adjustment according to actual tension distribution, and slow response speed of existing tension adjustment devices in the prior art. It provides a plate and strip adaptive correction and tension adjustment device based on pneumatic drive, which is simple and reasonable in structure, easy to assemble, and can detect strip tension fluctuations and achieve rapid response adjustment when deviation occurs.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] The sheet and strip adaptive correction and tension adjustment device based on pneumatic drive includes a frame, a conveyor belt and a sheet and strip; the frame and conveyor belt are used for transporting and conveying the sheet and strip during the rolling process; it also includes a deviation detection system and a three-roll tension roller group installed on the sheet and strip transport path for detecting the amount of sheet and strip deviation.

[0008] The deviation detection system includes a mounting frame and infrared sensors for detecting the edge position of the strip; there are at least two infrared sensors, which are symmetrically arranged on the left and right sides of the mounting frame; a space is reserved below the deviation detection system for the strip to pass through;

[0009] The three-roll tension roller assembly includes a first pressing roller, a second pressing roller, and a three-section variable diameter tension adjusting roller; the three-roll tension roller assembly is in the shape of an isosceles triangle; two tension sensors are provided under the bearing seats at the left and right ends of the three-section variable diameter tension adjusting roller.

[0010] The first and second pressing rollers are placed close to the top of the conveyor belt, with space reserved below for the conveyor belt to pass through; the conveyor belt passes below the deviation detection system, then below the first pressing roller and above the three-section variable diameter tension adjustment roller, and finally exits the three-roll tension roller group below the second pressing roller.

[0011] Preferably, the three-section variable diameter tension adjusting roller includes a roller shaft, a vibration damping module, a power cylinder, a ball valve, roller segments, and an elastic friction layer; the vibration damping module is connected to the roller shaft via a threaded connection and double-sided adhesive material; the vibration damping module is arranged perpendicular to the roller shaft; the bottom of the power cylinder is bonded to the upper surface of the vibration damping module and is arranged vertically; the roller segments are welded to the expansion cap on the piston rod surface of the power cylinder; the elastic friction layer is disposed on the surface of the roller segments; the ball valve and the power cylinder are evenly distributed radially along the roller shaft.

[0012] Preferably, the roller shaft is hexagonal prism in shape, with an included angle of 120° between adjacent sidewalls; the roller shaft is divided into three variable roller diameter mechanisms, each of which is equipped with at least two power cylinders; the roller shaft is a hollow shell, and air inlet pipes are provided at both ends of the roller shaft; the sidewalls of the roller shaft are provided with connecting through holes, which are evenly distributed on the sidewalls; the vibration damping module is connected to the roller shaft through the connecting through holes.

[0013] Preferably, the vibration damping module includes an upper flange, several sets of self-powered vibration damping mechanisms, and a lower flange; each set of self-powered vibration damping mechanisms is located between the upper and lower flanges; the top of each set of self-powered vibration damping mechanisms is fixed to the upper flange by a threaded connection, and the other end is fixed to the lower flange by a threaded connection; each set of self-powered vibration damping mechanisms is evenly distributed along the axial direction of the air vent pipe; the upper flange is fixedly connected to the bottom of the power cylinder.

[0014] Preferably, the self-powered vibration damping mechanism includes a cylinder, an upper sealing cover, a piston, a vibration damping spring assembly, a magnetorheological damping module, an electromagnetic induction module, a self-powered power generation module, and a lower sealing cover; the self-powered vibration damping mechanism is cylindrical in shape and symmetrical in the left and right axial directions; a piston rod is connected to the piston;

[0015] The vibration damping spring assembly includes an upper spring holder, several sets of strong springs, and a lower spring holder; the upper spring holder is connected to the lower part of the upper sealing cover by double-sided adhesive material; each set of strong springs is evenly distributed along the circumference of the piston; each set of strong springs has an upper spring pressure plate at its upper end, and the upper end of the strong spring is fixedly connected to the upper spring pressure plate, and the lower end of the strong spring is fixedly connected to the lower spring holder;

[0016] The magnetorheological damping module includes an upper anti-leakage magnetic sleeve, a working piston, magnetorheological fluid, and a lower anti-leakage magnetic sleeve; both the upper and lower anti-leakage magnetic sleeves are fixed by double-sided adhesive thin plates; the working piston is provided with circumferentially evenly distributed throttling orifices, an electromagnetic coil, and an electromagnetic coil controller, the electromagnetic coil controller being used to control the magnitude of the current passing through the electromagnetic coil; the magnetorheological fluid flows through the throttling orifices in the upper and lower parts of the cavity of the self-powered vibration damping mechanism;

[0017] The self-powered power generation module includes several piezoelectric units, which are evenly distributed along the circumference of the piston rod. Each piezoelectric unit contains several piezoelectric vibrators. The piezoelectric unit located at the bottom of the cylinder is connected to the lower sealing cover at the bottom of the cylinder through a double-sided adhesive plate. The self-powered power generation module is electrically connected to the electromagnetic coil controller through wires.

[0018] Preferably, the power cylinders are evenly distributed around the roller shaft; each power cylinder includes a power cylinder barrel, a sealing valve, a high-strength return spring, a power cylinder piston rod, and an expansion cap; the sealing valve is located at the bottom of the power cylinder barrel; the power cylinder piston rod is in close contact with the power cylinder barrel; the two ends of the high-strength return spring are respectively limited to the bottom of the power cylinder barrel and the bottom of the power cylinder piston rod; an infrared ranging sensor is provided at the bottom of the piston rod, and an infrared receiving device is provided at the bottom of the power cylinder barrel; the expansion cap is located at one end of the power cylinder piston rod; the expansion cap is arc-shaped; the expansion cap is a detachable part and is fixed to the top of the power cylinder piston rod by a threaded connection.

[0019] Preferably, the ball valves are evenly distributed inside the three-section variable diameter tension regulating roller, and ball valves are provided between every two power cylinders and at the air inlet pipe of the three-section variable diameter tension regulating roller; the ball valve includes a ball valve base, a ball, a sealing seat, a valve stem, an electromagnetic coil, a key, and an upper pressure plate; the ball is placed vertically at the bottom of the ball valve base; the sealing seat is placed on the left and right sides of the ball and is in close contact with the ball; one end of the valve stem is tightly connected to the ball, and the other end of the valve stem is limited to the upper pressure plate at the top of the ball valve base; the key is arranged around the valve stem and is tightly connected to the valve stem; the electromagnetic coil is embedded inside the ball valve base and is evenly distributed along the circumference of the valve stem.

[0020] Preferably, the elastic friction layer expands elastically as the diameter of the three-section variable diameter tension regulating roller changes, and always adheres to the surface of the three-section variable diameter tension regulating roller.

[0021] Preferably, when the device requires tension adjustment, the three-section variable diameter mechanism of the three-section variable diameter tension regulating roller expands the diameter synchronously; when a deviation of the strip is detected, the two variable diameter mechanisms on the left and right sides of the three-section variable diameter tension regulating roller can be controlled independently, and the correction function can be achieved by changing the diameter of the tension regulating roller on one side.

[0022] Preferably, the strip deviation is obtained by calculating the difference based on the data from the infrared sensors at both ends of the strip; the method for detecting the strip deviation includes the following steps:

[0023] S1, Reference value setting: Collect the detection values ​​λ1 and λ2 from two infrared sensors 42; calculate the difference between the two detection values. The reference value is obtained when there is no deviation in the strip. ;

[0024] S2, Real-time Position Acquisition: During the production process, two infrared sensors acquire detection values ​​in real time. , And calculate the difference. The difference is the real-time monitoring value of the strip position deviation during the production process.

[0025] S3, Deviation Judgment: During the production process, the real-time monitoring value of the strip position deviation is compared with the reference value when the strip has no deviation. intermediate quantity This is the comparison value for plate and strip deviation; when This indicates that the strip has shifted to the left. This indicates that the strip has shifted to the right. This indicates that the strip has not shifted.

[0026] Compared with the prior art, the beneficial effects of this invention are: (1) The sensors set in the detection system of this invention are symmetrical, and the sensors detect the edges of both sides of the strip at the same time. The external environment or the material of the strip itself has the same effect on the sensors. The difference calculation of the strip deviation can eliminate the external influence and obtain higher detection and control accuracy; (2) This invention uses a three-section variable diameter tension roller to realize tension adjustment and strip deviation correction adjustment at the same time; (3) This invention uses a pneumatically driven variable diameter tension roller to replace the tension adjustment method of lifting and lowering the tension roller of the traditional three-roller tension roller group. The device is reasonable and simple. (4) The present invention adopts a pneumatically driven variable diameter structure and is equipped with multiple sets of magnetorheological damping vibration reduction modules, which can reduce the tension fluctuation caused by the variable diameter during tension adjustment or correction. As can be seen from the characteristics of magnetorheological liquid material, the material's response time to current is at the millisecond level, and it can adaptively adjust the device according to the actual vibration conditions. (5) The present invention has low current and low energy consumption. The device adopts a self-powered vibration reduction mechanism, which does not require an external power supply device. The system provides current according to the actual vibration conditions to achieve adaptive adjustment. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a plate and strip adaptive correction and tension adjustment device based on pneumatic drive according to the present invention.

[0028] Figure 2 This is a schematic diagram of a deviation detection system in this invention;

[0029] Figure 3 This is a partial structural diagram of the three-section variable diameter tension regulating roller in this invention;

[0030] Figure 4 This is a schematic diagram of an overall structure of the three-section variable diameter tension regulating roller in this invention;

[0031] Figure 5 This is a schematic diagram of a longitudinal cross-sectional structure of the three-section variable diameter tension regulating roller in this invention;

[0032] Figure 6 This is a schematic diagram of an axial cross-sectional structure of the three-section variable diameter tension regulating roller in this invention;

[0033] Figure 7 This is a schematic diagram of a radial cross-section structure of the self-powered vibration damping mechanism in this invention;

[0034] Figure 8 This is a schematic diagram of an overall structure of the vibration reduction module in this invention;

[0035] Figure 9This is a schematic diagram of the lower flange of the vibration damping module in this invention;

[0036] Figure 10 This is a schematic diagram of one structure of the ball valve device in this invention.

[0037] In the diagram: 1. Frame; 2. Conveyor belt; 3. Plate belt; 4. Deviation detection system; 5. First pressure roller; 6. Three-section variable diameter tension adjusting roller; 7. Tension sensor; 8. Second pressure roller; 9. Mounting bracket; 10. First infrared sensor; 11. Second infrared sensor; 12. Roller shaft; 13. Air inlet pipe; 14. Connecting through hole; 15. Upper flange of vibration damping module; 16. Roller shaft connecting pipe; 17. Self-powered vibration damping mechanism mounting groove; 18. Support column; 19. Self-powered vibration damping mechanism; 20. Cylinder body; 21. Piston; 22. Upper sealing cover; 33. Upper spring seat; 44. Strong spring; 5. Lower spring seat; 65. Piston guide seat; 66. Upper anti-leakage magnetic sleeve; 67. Working piston; 68. Electromagnetic coil; 69. Throttling orifice; 60. Magnetorheological fluid; 61. 2. Lower anti-leakage magnetic sleeve 6413, piezoelectric vibrator 6414, double-sided adhesive sheet 6415, lower sealing cover 6416, vibration damping module lower flange 65, power cylinder barrel 6501, cylinder air inlet 6502, sealing valve 6503, powerful return spring 6504, infrared ranging sensor 6505, power cylinder piston rod 6506, expansion top cap 6507, roller flap 6508, ball valve 66, valve stem 6601, upper pressure plate 6602, sealing ring 6603, key 6604, ball valve solenoid coil 6605, ball 6606, sealing seat 6607, valve seat 6608, elastic friction layer 67, variable roller diameter mechanism 6-A, variable roller diameter mechanism 6-B, variable roller diameter mechanism 6-C, ball valve 66-A, ball valve 66-B, ball valve 66-C, ball valve 66-D. Detailed Implementation

[0038] To more clearly illustrate the embodiments of the present invention, specific implementation methods will be described below with reference to the accompanying drawings. It should be noted that in the description of the present invention, terms such as "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Obviously, the accompanying drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0039] Example:

[0040] like Figure 1 As shown, the pneumatically driven adaptive belt deviation correction and tension adjustment device proposed in this invention includes a frame 1, a conveyor belt 2, a belt 3, a deviation detection system 4, a first pressure roller 5, a three-section variable diameter tension adjustment roller 6, a tension sensor 7, and a second pressure roller 8. The deviation detection system, the first pressure roller, the three-section variable diameter tension adjustment roller, the tension sensor, and the second pressure roller are all arranged on the belt conveying path.

[0041] Tension measurement principle: A tension sensor is installed at each end of the bearing housing of the three-section variable diameter tension regulating roller. The pressure values ​​measured by the two sensors are respectively... and .

[0042] If the two tension sensors are installed at an angle, then the tension T is:

[0043] ;

[0044] If the two sensors are installed perpendicularly, then the tension T is:

[0045] ;

[0046] In the formula: This indicates the included angle formed during the transmission of the strip on the tension roller.

[0047] The three-roll tension roller assembly includes a first pressing roller, a second pressing roller, and a three-section variable-diameter tension adjusting roller, forming an isosceles triangle structure. The first and second pressing rollers are placed close to the top of the conveyor belt, with space reserved below for the belt to pass through. The position of the three-section variable-diameter tension adjusting roller is adjusted according to actual production conditions. During production, the belt passes under the first pressing roller, then over the variable-diameter tension adjusting roller, and finally exits the tension roller assembly under the second pressing roller. A deviation detection system is used to detect and calculate the belt offset and its amount. The first and second pressing rollers in the three-roll tension roller assembly ensure that the belt conveying angle remains fixed during production, reducing tension fluctuations. When tension adjustment is required, the three-section variable-diameter tension adjusting roller changes its radius to alter the conveyor belt angle and thus the system tension. Furthermore, the three sections 6-ABC of the three-section variable-diameter tension adjusting roller are independent and can be controlled separately for diameter adjustment. When belt offset occurs during conveying, the radius of one of the sections ABC can be changed to guide the offset belt to the correct position and correct the belt offset.

[0048] like Figure 2As shown, the deviation detection system provided in this invention includes a mounting frame 41, a first infrared sensor 42 mounted on the left side of the strip, and a second infrared sensor 43 mounted on the right side. The mounting frame of the deviation detection system is fixedly connected to the frame, and the gap at the bottom of the deviation detection system allows the strip to pass smoothly. The mounting frame of the deviation detection system has evenly placed infrared sensors on the left and right slide rails, with no fewer than two infrared sensors symmetrically arranged in the middle section of the mounting frame on both sides of the strip.

[0049] Deviation calculation principle: In actual production processes, due to different production requirements, the position of the strip may not be in the center of the mounting frame. Therefore, deviation calculation is divided into the following steps (taking two sets of infrared sensors as an example):

[0050] (1) Reference value setting: When the equipment is not powered on and there is no offset, the detection values ​​λ1 and λ2 of the first infrared sensor on the left side of the strip and the second infrared sensor on the right side of the strip are collected; λ1 and λ2 represent the edge distances of the strip to the left and right sides of the mounting bracket of the deviation detection system. The two detection values ​​are input into the controller for difference calculation. This allows us to obtain the reference value when there is no deviation in the strip. .

[0051] (2) Real-time position acquisition: During the production process, two infrared sensors acquire detection values ​​in real time. , Assuming the strip shifts to the left, the distance between the strip and the first infrared sensor on the left decreases, while the distance to the second infrared sensor on the right increases. At this point, the processing unit calculates the difference between the two detected values. This difference is the real-time monitoring value of the strip position deviation during the production process.

[0052] (3) Deviation Judgment: During the production process, the calculation unit compares the detected value of the strip position deviation with the reference value in real time. Intermediate quantities during the calculation process This is the comparison value for the strip deviation. As mentioned in (2), when the strip shifts to the left, the distance on the left side decreases, and the distance between the left edge of the strip and the mounting bracket decreases. Therefore, Similarly Therefore, intermediate quantity Therefore, in determining the deviation, This indicates that the strip is shifted to the left, and similarly... This indicates that the strip has shifted to the right. This indicates that the strip has not shifted.

[0053] like Figure 3As shown, the roller shaft 61 in the three-section variable diameter tension regulating roller includes an air inlet pipe 6101 and a connecting through hole 6102. The roller shaft has an overall hexagonal prism shape, with an included angle of 120° between adjacent side walls. The roller shaft is divided into three sections, which are symmetrical about the middle surface. The roller shaft is a hollow shell, with air inlet pipes at both ends. Each section of the roller shaft has a connecting through hole on its side wall, which is evenly distributed on the side wall. The vibration damping module is screwed to the roller shaft through the connecting through hole; the vibration damping module is set perpendicular to the roller shaft and is bonded by a double-sided adhesive sheet 6415. In actual use, the number of through holes can be selected according to the actual working conditions, and unused through holes are sealed with piston caps.

[0054] like Figures 4 to 6 As shown, the three-section variable diameter tension adjusting roller also includes a vibration damping module, a power cylinder 6501, a cylinder air inlet 6502, a sealing valve 6503, a high-strength return spring 6504, an infrared ranging sensor 6505, a power cylinder piston rod 6506, an expansion cap 6507, roller flaps 6508, a ball valve 66, and an elastic friction layer 67. The six sets of vibration damping modules and the power cylinder are evenly distributed circumferentially around the roller shaft. The vibration damping modules are connected to the roller shaft via screws and double-sided adhesive plates. The power cylinder is fixedly connected to the upper surface of the vibration damping modules via double-sided adhesive plates. The sealing valve is located at the bottom of the power cylinder. The front end of the sealing valve is umbrella-shaped, and the bottom is circular, connected by a cylindrical adhesive strip. The bottom of the sealing valve is located inside the power cylinder, and the umbrella-shaped front end is located outside the power cylinder. When the power cylinder is working, the internal pressure of the power cylinder is greater than the external pressure, the sealing valve is compressed, and the height of the power cylinder piston rod achieves self-locking. The high-strength return spring is positioned at both ends at the bottom of the power cylinder barrel and the bottom of the power cylinder piston rod, respectively. An infrared ranging sensor is installed at the bottom of the power cylinder piston rod, and an infrared receiver is located at the bottom of the power cylinder barrel. The data from the infrared ranging sensor is transmitted to the controller in real time to detect the movement distance of the power cylinder piston rod, thereby controlling the air intake volume of the intake pipe and realizing negative feedback control. Furthermore, the expansion cap is placed at the other end of the power cylinder piston rod. The expansion cap is arc-shaped and detachable, and is fixed to the top of the power cylinder piston rod by a threaded connection.

[0055] Furthermore, the ball valves are located inside the roller shaft, and the number of ball valves is... N represents the number of ball valves in the system, and M represents the number of power cylinders in the system. A ball valve is located on each of the left and right sides of the roller shaft, connecting to the air intake pipes on both sides. A ball valve is located between every two power cylinders. The ball valve solenoid coil 6605 is controlled by the system controller. The roller segments are welded to the expansion cap.

[0056] The elastic friction layer has a circular side and is located on the outside of the roll segments. The elastic friction layer serves two purposes: first, it helps with the conveying of the strip and reduces the probability of tension fluctuations caused by slippage; second, during the diameter change process, roll gaps are generated between the roll segments, which may cause scratches on the strip surface. The elastic friction layer expands with the tension regulating roll and always wraps around the roll segments, effectively mitigating the scratching of the strip by the roll gaps.

[0057] like Figure 7 As shown, the self-powered vibration damping mechanism 64 provided in this invention comprises a cylinder 6401, a piston 6402, an upper sealing cover 6403, an upper spring holder 6404, multiple sets of strong springs 6405, a lower spring holder 6406, an upper anti-leakage magnetic sleeve 6408, a magnetorheological fluid 6412, a working piston 6409, a lower anti-leakage magnetic sleeve 6413, a piston guide seat 6407, a throttling orifice 6411, an electromagnetic coil 6410, a double-sided adhesive sheet, a piezoelectric vibrator 6414, and a lower sealing cover 6416. The self-powered vibration damping mechanism can be divided into a first cylinder and a second cylinder from top to bottom. The self-powered vibration damping mechanism has an overall cylindrical structure and is symmetrical along its left and right axes. The piston has a cross-shaped structure. Multiple sets of strong springs in the damping spring assembly are evenly distributed along the piston's circumference. Each damping spring assembly contains at least two strong springs. The upper end of each strong spring is fixedly connected to an upper spring holder, and the other end is fixedly connected to a lower spring holder. The upper end of the upper spring holder is bonded to an upper sealing cap via a double-sided adhesive sheet. The lower spring holder is fixedly connected to the upper surface of the bottom of the first cylinder. A piston guide seat is provided at the bottom of the first cylinder. The second cylinder has an upper anti-leakage magnetic sleeve fixedly connected to the top via a double-sided adhesive sheet, and a lower anti-leakage magnetic sleeve at the bottom. The anti-leakage magnetic sleeve effectively improves the magnetic field distribution within the cylinder, reduces magnetic field interference to external electronic equipment, and improves equipment stability. The second cylinder contains a working piston that moves synchronously up and down with the piston. The working piston has multiple throttling orifices evenly distributed axially. An electromagnetic coil and an electromagnetic coil controller are embedded in the working piston, with the electromagnetic coils evenly distributed in a ring. The piston, working piston, and inner wall of the cylinder divide the second cylinder into a first chamber and a second chamber. The magnetorheological fluid fills the upper and lower chambers and the throttling orifice. The working piston is tightly connected to the inner wall of the cylinder, so the magnetorheological fluid in the upper and lower chambers cannot directly exchange flow; it can only flow between the upper and lower chambers through the throttling orifice. Both the first and second cylinders have piston rod guide seats at their bottoms for limiting the vertical movement of the piston.

[0058] Furthermore, the self-powered vibration damping mechanism includes a self-powered power generation module comprising multiple piezoelectric units, each of which contains multiple piezoelectric vibrators, and the piezoelectric units are evenly distributed along the circumference of the piston; the upper part of the self-powered power generation module is bonded to the bottom of the second cylinder by a double-sided adhesive thin plate, and the bottom of the self-powered power generation module is fixed to the lower sealing cover by a double-sided adhesive thin plate.

[0059] like Figure 8 and Figure 9 As shown, the vibration damping module provided by this invention includes an upper flange 62, a roller connecting pipe 6201, a support column 63, a self-powered vibration damping mechanism, a lower flange 65, and several standard connecting parts. The components are connected by threaded connections between the upper and lower flanges of the vibration damping module and other components via standard parts, forming a complete vibration damping module. Specifically, the upper and lower flanges are circular and perfectly symmetrical. A roller connecting pipe is pre-reserved at the center of the flange, and the roller connecting pipe is circular with internal threads. At least two self-powered vibration damping mechanism mounting slots 6202 are pre-reserved, evenly distributed along the circumference of the roller connecting pipe. Mounting holes for connecting to the roller are pre-reserved on the flange. Each vibration damping module includes at least two self-powered vibration damping mechanisms. These mechanisms are evenly distributed around the circumference of the roller connecting pipe, forming a circle. The upper and lower ends of each self-powered vibration damping mechanism are threadedly connected to the pre-reserved mounting slots in the upper and lower flanges of the vibration damping module via standard parts. The mounting holes for the roller connecting pipe are located at the center between the upper and lower flanges of the vibration damping module. These holes are threaded and can be threaded to the roller connecting through holes and the pre-reserved air inlet on the power cylinder. During use, double-sided adhesive plates are pre-installed on the upper flange and lower flange of the vibration damping module. The vibration damping module is bonded to the roller and power cylinder via these plates, and the air pipe connection mounting holes are threadedly connected to the air pipe channels of the roller and power cylinder to ensure system sealing.

[0060] The working principle of the self-powered vibration damping mechanism is as follows: When the power cylinder is working, the up-and-down movement of the piston rod will cause vibration to affect the entire system. The upper flange of the vibration damping module will have an axial movement tendency relative to the lower flange. At this time, the piston in the self-powered vibration damping mechanism will move up and down, causing the upper spring holder to move relative to the lower spring holder. The strong spring is then stretched or compressed, and its deformation eliminates some of the vibration impact. However, due to spring inertia, the system vibration will not be immediately eliminated. Therefore, this invention also provides damping compensation through a magnetorheological damping module. The piston drives the working piston in the second cylinder to move relative to the piston, such as... Figure 7As shown by the middle arrow, when the working piston moves downward, the magnetorheological fluid in the lower chamber flows into the upper chamber through the throttling orifice, providing partial damping compensation and reducing system vibration. When the working pistons move in opposite directions, the flow directions are reversed. Simultaneously, the piston rod drives the piston at the bottom of the second cylinder to move downward, squeezing the piezoelectric vibrator. The piezoelectric vibrator exhibits a positive piezoelectric effect, generating electrical energy. This energy is rectified by an external rectifier and transmitted through wires to the electromagnetic coil controller mounted on the working piston. The controller outputs a corresponding current based on the vibration conditions, causing the electromagnetic coil to generate a change in magnetic field. This changes the viscosity of the magnetorheological fluid in the upper chamber, providing corresponding damping force and achieving intelligent vibration reduction. This reduces tension fluctuations during tension adjustment, contributing to more precise tension and correction control.

[0061] like Figure 10 As shown, the spherical valve used in this invention includes a valve stem 6601, an upper pressure plate 6602, a sealing ring 6603, a key 6604, a spherical valve solenoid coil 6605, a ball 6606, a sealing seat 6607, and a valve seat 6608. Both the upper pressure plate and the sealing ring are circular, with a pre-drilled valve stem mounting hole at the center. The upper pressure plate and the sealing ring are fixedly connected by an adhesive substance. The spherical valve solenoid coil is embedded in the valve seat and evenly distributed in a circular shape along the valve stem. The valve stem is vertically positioned within the valve stem mounting hole in the pressure plate and the sealing ring. A key is located near the valve stem for limiting its movement. The bottom of the valve stem is threaded, and the ball has a mounting hole, allowing the valve stem to be threadedly connected to the ball. The ball is a spherical body with a vent hole, placed on the valve seat, and a sealing seat is located near the ball.

[0062] The specific working process of a ball valve: When the ball valve is not in operation, the inlet and outlet of the ball are perpendicular to the pipeline, and the ball valve is in a non-ventilated state; when the ball valve is in operation, the ball valve solenoid coil is energized to generate a magnetic field, which causes the valve stem to generate an Ampere force to control the rotation of the valve stem. The rotation of the valve stem drives the ball to rotate. When the ball rotates 90°, the ball valve can then ventilate and operate.

[0063] The overall working process of this invention is as follows:

[0064] Before the formal rolling begins, reset and adjust the strip detection system and tension detection system.

[0065] Working process of a three-section variable diameter tension regulating roller (taking the expansion of the tension regulating roller as an example):

[0066] Electromagnetic signals generated by the solenoid coils of the ball valves control the rotation of all ball valve stems by 90° within the system, opening all ball valves and simultaneously allowing air to enter through the intake pipes on both sides of the roller. This air enters the power cylinder, increasing the pressure inside and pushing the piston rod radially upwards. The piston rod's movement then pushes the expansion cap and roller segments. When air enters the power cylinder, the external pressure is high, opening the sealing valve and allowing only unidirectional gas flow. At this time, the control system uses an infrared ranging sensor in the power cylinder to detect the piston rod's movement distance and performs negative feedback control on the air intake. When air intake stops, the internal pressure of the power cylinder is high, the sealing valve closes, and the system achieves high self-locking. The elastic friction layer undergoes elastic deformation as the roller segments expand, completing the diameter expansion of the three-section variable diameter tension adjusting roller. When the roller radius decreases, the power cylinder releases air, the powerful reset spring resets, and the piston rod in the power cylinder descends radially, completing the roller radius reduction.

[0067] When movement occurs within the power cylinder, system vibration is inevitable, causing fluctuations in the readings detected by the tension sensor and infrared ranging sensor. During vibration, the piston in the self-powered damping mechanism moves up and down, causing the upper spring holder to move relative to the lower spring holder. The powerful spring, through its own deformation, eliminates some of the vibration's impact. Simultaneously, the magnetorheological damping module provides damping compensation. The piston drives the working piston within the second cylinder to move relative to it. The piezoelectric vibrator is compressed, generating electrical energy, which is rectified by an external rectifier and transmitted via wires to an electromagnetic coil controller mounted on the working piston. The controller outputs a corresponding current based on the vibration, causing the electromagnetic coil to generate a magnetic field change. This results in a change in the viscosity of the magnetorheological fluid within the upper cavity. Figure 7 As indicated by the middle arrow, the magnetorheological fluid in the lower cavity flows into the upper cavity through a throttling orifice, providing partial damping compensation and realizing intelligent vibration reduction within the power cylinder. An infrared ranging sensor at the bottom of the piston rod records the radial movement distance of the piston and feeds the data back to the controller. The controller then performs negative feedback control of the gas delivery based on the real-time feedback data.

[0068] When the system requires tension adjustment, the controller controls the three-section variable diameter tension adjusting roller's roller diameter mechanism 6-A, roller diameter mechanism 6-B, and roller diameter mechanism 6-C according to the tension sensor data, and simultaneously completes the expansion or contraction of the tension adjusting roller.

[0069] When the deviation detection system detects belt misalignment, the controller controls the expansion or contraction of the tension roller on one side based on the offset. Taking a leftward belt deviation as an example, when the belt deviates to the left, the obstruction area on the left side of the belt increases, and the distance between the belt edge and the detection system decreases. Similarly Therefore, intermediate quantity When the strip shifts to the left, the controller sends a command to expand the left end 6-A of the three-section tension roller. At this time, air enters through the air inlet on the left side of the tension roller shaft, the leftmost ball valve 66-A opens, and the remaining ball valves 66-B, 66-C, and 66-D close. During the expansion process, due to the uneven tension between the left and right sides, the strip gradually shifts to the right to correct itself. Simultaneously, the deviation detection system continuously monitors the real-time offset and provides negative feedback adjustment.

[0070] The sensors in the detection system of this invention are symmetrically arranged, simultaneously detecting both edges of the strip. Changes in the external environment or the strip's material have the same impact on the sensors. Using differential calculations to determine strip misalignment eliminates external influences, resulting in higher detection and control accuracy. This invention employs a three-section variable-diameter tension roller, enabling simultaneous tension adjustment and strip misalignment correction. It uses a pneumatically driven variable-diameter tension roller instead of the traditional three-roller tension roller assembly for tension adjustment, resulting in a simple and efficient device with rapid response. The use of a sealed valve allows for stepless adjustment of the diameter. The pneumatically driven variable-diameter structure and multiple magnetorheological damping vibration reduction modules reduce tension fluctuations caused by diameter changes during adjustment or correction. The magnetorheological fluid material's response time to current is in the millisecond range, allowing for adaptive vibration reduction based on actual vibration conditions. This invention features low current and low energy consumption. The device uses a self-powered vibration reduction mechanism, eliminating the need for external power supplies. The system provides current based on actual vibration conditions, achieving adaptive adjustment.

[0071] The above description is merely a detailed explanation of preferred embodiments and principles of the present invention. For those skilled in the art, there may be changes in specific implementation methods based on the ideas provided by the present invention, and these changes should also be considered within the scope of protection of the present invention.

Claims

1. A pneumatically driven adaptive strip alignment and tension adjustment device, comprising a frame, a conveyor belt, and a strip; wherein the frame and conveyor belt are used for transporting and conveying the strip during the rolling process; characterized in that, It also includes a deviation detection system and a three-roll tension roller assembly installed on the strip conveying path to detect the strip deviation. The deviation detection system includes a mounting frame and infrared sensors for detecting the edge position of the strip; there are at least two infrared sensors, which are symmetrically arranged on the left and right sides of the mounting frame; a space is reserved below the deviation detection system for the strip to pass through; The three-roll tension roller assembly includes a first pressing roller, a second pressing roller, and a three-section variable diameter tension adjusting roller; the three-roll tension roller assembly is in the shape of an isosceles triangle; two tension sensors are provided under the bearing seats at the left and right ends of the three-section variable diameter tension adjusting roller. The first and second pressing rollers are placed close to the top of the conveyor belt, with space reserved below for the conveyor belt to pass through; the conveyor belt passes below the deviation detection system, then below the first pressing roller and above the three-section variable diameter tension adjustment roller, and finally exits the three-roll tension roller group below the second pressing roller.

2. The adaptive strip alignment and tension adjustment device based on pneumatic drive as described in claim 1, characterized in that, The three-section variable diameter tension regulating roller includes a roller shaft, a vibration damping module, a power cylinder, a ball valve, roller segments, and an elastic friction layer. The vibration damping module is connected to the roller shaft via threaded connections and double-sided adhesive material. The vibration damping module is positioned perpendicular to the roller shaft. The bottom of the power cylinder is bonded to the upper surface of the vibration damping module and is positioned vertically. The roller segments are welded to the expansion caps on the piston rod surfaces of the power cylinder. The elastic friction layer is disposed on the surface of the roller segments. The ball valve and the power cylinder are evenly distributed radially along the roller shaft.

3. The sheet metal adaptive correction and tension adjustment device based on pneumatic drive as described in claim 2, characterized in that, The roller shaft is generally hexagonal prism in shape, with an included angle of 120° between adjacent side walls. The roller shaft is divided into three variable diameter sections, each of which contains at least two power cylinders. The roller shaft is a hollow shell, and air inlet pipes are provided at both ends of the roller shaft. The side walls of the roller shaft are provided with connecting through holes, which are evenly distributed on the side walls. The vibration damping module is connected to the roller shaft through the connecting through holes. The shape of the roller shaft can be modified according to the actual production process requirements.

4. The sheet metal adaptive correction and tension adjustment device based on pneumatic drive as described in claim 3, characterized in that, The vibration damping module includes an upper flange, several sets of self-powered vibration damping mechanisms, and a lower flange; each set of self-powered vibration damping mechanisms is located between the upper and lower flanges; the top of each set of self-powered vibration damping mechanisms is fixed to the upper flange by a threaded connection, and the other end is fixed to the lower flange by a threaded connection; each set of self-powered vibration damping mechanisms is evenly distributed along the axial direction of the air vent pipe; the upper flange is fixedly connected to the bottom of the power cylinder.

5. The sheet metal adaptive correction and tension adjustment device based on pneumatic drive as described in claim 4, characterized in that, The self-powered vibration damping mechanism includes a cylinder, an upper sealing cover, a piston, a vibration damping spring assembly, a magnetorheological damping module, an electromagnetic induction module, a self-powered power generation module, and a lower sealing cover; the self-powered vibration damping mechanism has an overall cylindrical structure and is symmetrical in the left and right axes; a piston rod is connected to the piston; The vibration damping spring assembly includes an upper spring holder, several sets of strong springs, and a lower spring holder; the upper spring holder is connected to the lower part of the upper sealing cover by double-sided adhesive material; each set of strong springs is evenly distributed along the circumference of the piston; each set of strong springs has an upper spring pressure plate at its upper end, and the upper end of the strong spring is fixedly connected to the upper spring pressure plate, and the lower end of the strong spring is fixedly connected to the lower spring holder; The magnetorheological damping module includes an upper anti-leakage magnetic sleeve, a working piston, magnetorheological fluid, and a lower anti-leakage magnetic sleeve; both the upper and lower anti-leakage magnetic sleeves are fixed by double-sided adhesive thin plates; the working piston is provided with circumferentially evenly distributed throttling orifices, an electromagnetic coil, and an electromagnetic coil controller, the electromagnetic coil controller being used to control the magnitude of the current passing through the electromagnetic coil; the magnetorheological fluid flows through the throttling orifices in the upper and lower parts of the cavity of the self-powered vibration damping mechanism; The self-powered power generation module includes several piezoelectric units, which are evenly distributed along the circumference of the piston rod. Each piezoelectric unit contains several piezoelectric vibrators. The piezoelectric unit located at the bottom of the cylinder is connected to the lower sealing cover at the bottom of the cylinder through a double-sided adhesive plate. The self-powered power generation module is electrically connected to the electromagnetic coil controller through wires.

6. The sheet metal adaptive correction and tension adjustment device based on pneumatic drive as described in claim 5, characterized in that, The power cylinders are evenly distributed around the roller shaft; each power cylinder includes a power cylinder barrel, a sealing valve, a high-strength return spring, a power cylinder piston rod, and an expansion cap; the sealing valve is located at the bottom of the power cylinder barrel; the power cylinder piston rod is in close contact with the power cylinder barrel; the two ends of the high-strength return spring are respectively limited to the bottom of the power cylinder barrel and the bottom of the power cylinder piston rod; an infrared ranging sensor is provided at the bottom of the piston rod, and an infrared receiving device is provided at the bottom of the power cylinder barrel; the expansion cap is located at one end of the power cylinder piston rod; the expansion cap is arc-shaped; the expansion cap is a detachable part and is fixed to the top of the power cylinder piston rod by a threaded connection.

7. The sheet metal adaptive correction and tension adjustment device based on pneumatic drive as described in claim 2, characterized in that, The ball valves are evenly distributed inside the three-section variable diameter tension regulating roller, and a ball valve is provided between every two power cylinders and at the air inlet pipe of the three-section variable diameter tension regulating roller. The ball valve includes a ball valve base, a ball, a sealing seat, a valve stem, an electromagnetic coil, a key, and an upper pressure plate. The ball is placed vertically at the bottom of the ball valve base. The sealing seat is placed on the left and right sides of the ball and is in close contact with the ball. One end of the valve stem is tightly connected to the ball, and the other end of the valve stem is limited to the upper pressure plate at the top of the ball valve base. The key is arranged around the valve stem and is tightly connected to the valve stem. The electromagnetic coil is embedded inside the ball valve base and is evenly distributed along the circumference of the valve stem.

8. The sheet metal adaptive correction and tension adjustment device based on pneumatic drive as described in claim 2, characterized in that, The elastic friction layer expands elastically as the diameter of the three-section variable diameter tension regulating roller changes, and always adheres to the surface of the three-section variable diameter tension regulating roller.

9. The sheet metal adaptive correction and tension adjustment device based on pneumatic drive as described in claim 3, characterized in that, When the device requires tension adjustment, the three-section variable diameter tension regulating roller's three-section variable diameter mechanism expands the diameter synchronously; when a deviation in the strip is detected, the two variable diameter mechanisms located on the left and right sides of the three-section variable diameter tension regulating roller can be controlled independently, and the correction function can be achieved by changing the diameter of the tension regulating roller on one side.

10. The sheet metal adaptive correction and tension adjustment device based on pneumatic drive as described in claim 9, characterized in that, The strip deviation is calculated by subtracting the data from the infrared sensors at both ends of the strip; the method for detecting the strip deviation includes the following steps: S1, Reference value setting: Collect the detection values ​​λ1 and λ2 of two infrared sensors 42; calculate the difference between the two detection values ​​Δλ=λ1-λ2 to obtain the reference value Δλ when there is no deviation in the strip; S2, Real-time position acquisition: During the production process, two infrared sensors acquire detection values ​​λ′1 and λ′2 in real time and calculate the difference Δλ′=λ′1-λ′2; the difference is the real-time monitoring value of the strip position deviation during the production process. S3, Deviation Judgment: During the production process, the real-time monitoring value of the strip position deviation is compared with the reference value when the strip has no deviation. δ=Δλ′-Δλ=(λ′1-λ′2)-(λ1-λ2), and the intermediate value δ is the strip deviation comparison value. When δ<0, it means that the strip has shifted to the left; when δ>0, it means that the strip has shifted to the right; when δ=0, it means that the strip has not shifted.

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