A coiler both-side guide plate opening degree and center line calibration device and a calibration method thereof

Abstract

The present application belongs to the coiler two side guide plate opening degree and center line calibration device in the coiler technical field, and also relates to a coiler two side guide plate opening degree and center line calibration method. The reference base plate (200) is installed on the calibration base (101), the upper part of the reference base plate (200) is provided with a V-shaped guide rail (204), the movable measuring scale seat (300) is movably clamped on the V-shaped guide rail (204) through the inverted V-shaped rail groove (310), and the movable measuring scale seat (300) comprises a steel pipe (301), a combined compression spring (302), a fixed end (304), a movable end (305), a stop sleeve (306), a first sliding guide groove (307), a second sliding guide groove (308) and a measuring rod (309). The coiler two side guide plate opening degree and center line calibration device and the calibration method can accurately calibrate the side guide plate opening degree and the center line under the belt load state, consider the measurement and state evaluation of the side guide plate gap, provide a basis for the maintenance of the side guide plate, and eliminate the problem that the strip steel deviation affects the coiling quality.

Description

Technical Field

[0001] This invention belongs to the field of winding machine technology, and more specifically, it relates to a device for calibrating the opening degree and centerline of the guide plates on both sides of a winding machine. This invention also relates to a method for calibrating the opening degree and centerline of the guide plates on both sides of a winding machine. Background Technology

[0002] The front guide of the coiler consists of two ends above the laminar flow roller conveyor: one end is an inclined section, and the other end is a straight section. The inlet and outlet of the straight section on the drive side and the operation side are driven by four hydraulic cylinders respectively. The hot rolling coiler side guide plate must be calibrated after a period of use to ensure its centering and opening. If the calibration is deviated, the strip will run off-center, affecting the coil quality.

[0003] For a long time, existing technologies have used a two-hole positioning and calibration device designed solely with SMS (Short-Side Array). Figure 1 The calibration process is automated, but three problems exist in actual use: 1. The size of the calibration block is fixed, meaning only one opening degree can be calibrated. The gap between the cylinder shaft and the side guide during the opening and closing process of the side guide cannot be detected and eliminated. This gap causes a deviation between the actual opening degree of the guide and the calibrated opening degree during actual production. 2. The rolling center of the calibration block is fixed. Due to the different gaps between the two guides, the actual centerline between the two guide plates during production deviates from and tilts from the rolling centerline, resulting in non-coincidence. 3. To better guide the strip steel smoothly into the side guide plates, the inlet opening degree of the side guide plate is required to be slightly larger than the outlet opening degree by 0-10mm according to process requirements. However, the inlet and outlet widths of the calibration block designed by SMS are equal, which cannot meet the current side guide plate calibration requirements. Therefore, developing a calibration device that can accurately find the actual value of the gap between the two sides of the coiler to compensate for the opening degree and correct the deviation between the actual centerline and the rolling centerline is of great value.

[0004] Existing technology includes a method for controlling the opening and closing of the side guide plate of a hot-rolled strip steel coiler, published under number "104841723B". This technology, while maintaining the original hardware configuration of the coiler, eliminates the need for new detection elements. It uses an existing flatness detector to determine the skew position, deviation value, and skew length of the strip head, achieving intelligent control functions such as automatic quick opening, automatic activation of quick-opening compensation, automatic closing, and activation of the pressure ring on the coiler side guide plate. This saves on equipment investment costs and effectively controls the instability of the strip head shape via the coiler side guide plate, creating favorable conditions for reducing coil stacking, improving coil quality, and reducing labor intensity. However, this technology does not address the technical problems and solutions addressed in this application. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a device for calibrating the opening degree and centerline of the side guide plates of a coiler, which is simple in structure, can accurately calibrate the opening degree and centerline of the side guide plates under load, and takes into account the measurement of the gap between the side guide plates and the evaluation of their condition, so as to provide a basis for the maintenance of the side guide plates and eliminate the problem of strip deviation affecting the coiling quality.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] This invention relates to a device for calibrating the opening degree and centerline of the guide plates on both sides of a winding machine. It includes a calibration base, a reference base plate, and a movable measuring scale seat. The reference base plate is mounted on the calibration base, and a V-shaped guide rail is provided on the upper part of the reference base plate. The movable measuring scale seat is movably clamped onto the V-shaped guide rail through an inverted V-shaped rail groove. The movable measuring scale seat includes a steel pipe, a combined compression spring, a fixed end, a movable end, a stop sleeve, a first sliding guide groove, a second sliding guide groove, and a measuring rod.

[0008] The base plate includes two positioning pins, a connecting plate, two base support arms, and a V-shaped guide rail.

[0009] Each positioning pin of the reference base plate is fitted with one end in an inner hole of the connecting plate 202, and the other end of each positioning pin is inserted into the positioning hole of the calibration base to ensure accurate positioning of the measurement reference during measurement by this device.

[0010] The two base support arms of the reference base plate are welded to the connecting plate and supported on the laminar flow roller to maintain the stability of the measuring device during measurement; the V-shaped guide rail is precisely positioned in the positioning groove of the base support arm through machining.

[0011] One end of the steel pipe of the movable measuring scale holder is threaded and connected to the fixed end. A stop sleeve is welded to the other end of the steel pipe after the combined compression spring and the movable end are installed, to stop the movable end. The spring force of the combined compression spring can be adjusted by rotating the flat head on the fixed end with a wrench to turn the thread.

[0012] The fixed end of the movable measuring scale holder is machined into a spherical surface at one end and threaded at the other end, with the core hollowed out to reduce weight; the movable end is a steel pipe with a finely machined inner wall, with a clamping flange welded to one end of the movable end, and measuring rods of different lengths installed at the other end of the movable end through clearance fit, so as to be suitable for measuring the opening of side guide plates of different widths.

[0013] The movable measuring scale holder's combined compression spring includes a large spring and a spring, the specifications of which are determined by the pressure of the side guide plate to be calibrated. The steel pipe is marked with size graduations from left to right (300-800mm), and the movable end is marked with size graduations from left to right (0-100mm).

[0014] The fixed end and the movable end of the movable measuring scale base are welded with a first sliding guide groove and a second sliding guide groove. The first sliding guide groove and the second sliding guide groove are respectively provided with inverted V-shaped rail grooves, and the center lines of the inverted V-shaped rail grooves on the first sliding guide groove and the second sliding guide groove are on a straight line.

[0015] This invention also relates to a simple method for calibrating the opening degree and centerline of the side guide plates under load, taking into account both the measurement of the side guide plate gap and the assessment of its condition, providing a basis for the maintenance of the side guide plates, and eliminating the problem of strip deviation affecting coil quality. The calibration steps of the method for calibrating the opening degree and centerline of the side guide plates of the coiling machine are as follows:

[0016] S1. During measurement, open the side guide plate to its maximum opening. After confirming safety, hoist the reference base plate to the entrance of the straight section of the laminar flow roller conveyor. Insert the two positioning pins into the positioning holes of the calibration base. Place the two base support arms close to the adjacent laminar flow rollers. Use a frame level to adjust the levelness and stability of the reference base plate. Confirm that the intersection of the center lines on the reference base plate is visible. At this time, the V-shaped guide rail is perpendicular to the center line of the rolling mill.

[0017] S2. During the test, the side guide plate moves quickly inward from the maximum opening. When the distance to the movable measuring scale seat is less than the set distance (300), the ball head of the fixed end of the movable measuring scale seat is pressed against the transmission side guide plate. Then, the position control mode is switched to the pressure control mode. After the current detection pressure value is cleared to zero, the measuring scale seat is pressed against the measuring scale seat at a low speed. Gradually, the operating side guide plate is pressed against the ball head of the measuring rod inserted at the movable end.

[0018] S3. As the pressure increases, set the pressure or observe on-site. After the ball heads at both ends of the measuring scale base are in full contact with the side guide plates, clear the positions of the position sensors on both sides to zero.

[0019] S4. Further increase the pressure value calibration pressure, and maintain it for a short time when the set pressure value on one side is reached; at this time, the combined compression spring in the movable measuring scale seat is compressed, and the ball head at the movable end drives the corresponding first sliding guide groove and second sliding guide groove to move inward. Read the corresponding scale on the movable end as L1mm. At this time, the opening value of the side guide plate under the pressure on both sides is L2=1100-L1; at this time, the scale at the midpoint between the ball heads at both ends of the measuring scale seat is L3=(1100-L1) / 2.

[0020] S5. Under the pressure from both sides, the side guide plate is affected by the gap and leakage of hydraulic components. The scale L3 at the midpoint of L2 will definitely not coincide with the intersection of the center line on the reference base plate. The deviation L4 is the deviation between the actual center line and the reference center line when under load. This deviation value is used to provide a basis for adding or removing shims to the corresponding side guide plate to implement gap compensation.

[0021] S6. After clearance compensation or maintenance, the scale L3 at the midpoint of the side guide plate under load should coincide with the intersection 206. Input the opening value L2 at this time into the computer system. This L2 value is the correct value of the opening after the two side guide plates are calibrated under load. Reassign L3 to the sensors of the two hydraulic cylinders. This is the calibration value after the hydraulic cylinders have overcome clearance, leakage and centerline compensation. It is used as the starting point of the position loop control to complete the calibration.

[0022] Before step S1, rotate the flat thread on the fixed end of the movable measuring scale base to adjust the tension of the combined compression spring; insert the measuring rod into the inner hole of the movable end.

[0023] After step S1, lift the movable measuring scale base and install it on the reference base plate. Align the first and second sliding guide grooves on the scale with the V-shaped guide rail on the reference base plate and keep it sliding smoothly on the rail.

[0024] Before step S1, set the pressure values ​​on both sides of the servo pressure ring, and determine the combined compression spring of the movable measuring scale base according to the pressure on both sides. The specifications of the two compression springs of different sizes are then determined. The steel pipe, combined compression spring, fixed end, movable end, stop sleeve, first sliding guide groove, second sliding guide groove, and measuring rod are assembled into a movable measuring scale base.

[0025] After step S2, as the pressure gradually increases to the set pressure value or as observed on-site, after the ball heads at both ends of the side guide plates and the movable measuring scale base are in full contact, the positions of the position sensors on both sides are zeroed; at this time, the opening is 1100mm, and the starting position of the position sensors on the operating side and the transmission side is assigned to 0.

[0026] After step S6, the opening of the straight section outlet side is measured. According to the process requirements, the opening of the side guide plate inlet is 0-10mm larger than the opening of the outlet. Simply replace the corresponding measuring rod that is 10mm shorter and repeat the above process to complete the calibration.

[0027] The working principle and beneficial effects of the technical solution adopted in this invention are as follows:

[0028] The calibration device and method for calibrating the opening degree and centerline of the two guide plates of the winding machine described in this invention have the following main technical innovations: 1. The use of a combined compression spring increases the calibration pressure. The spring stiffness can be adjusted via threads to adapt to different calibration pressure requirements without increasing weight or volume. 2. A measurement method with one end fixed and the other movable is adopted. The addition of a fixed end as a measurement reference reduces dimensional fluctuations caused by pressure fluctuations by half compared to two-end movable measurements, resulting in more accurate measurements. 3. By measuring the centerline and alignment under simulated production load conditions, the device can better track the equipment degradation status of the side guide plates during actual operation than under no-load conditions. It allows for rapid judgment based on actual measurement data, avoiding unnecessary production quality losses during production. 4. General calibration only calibrates the actual opening degree data under position loop control. In actual operation, the side guides are mostly controlled by the pressure loop, causing some error between the actual and calibration data. This device calibrates the position accuracy under pressure loop load conditions. Therefore, the calibration measurement results are relatively accurate under both position loop and pressure loop control modes. 5. The measurement was modified based on the existing design, with minimal changes required on-site. 6. The ball joint error at both ends eliminates the error caused by the gap in the measuring surface due to deformation and tilting of the side guide plate during measurement. The calibration device and method of this invention mainly achieve the following technical effects: 1. By using the combined compression spring of the loaded side guide plate, the movement trajectory of the centerline of the side guide under pressure control mode is fully simulated, accurately reflecting the centerline deviation value. After maintenance and adjustment, the centerline fitted by the side guide is the true rolling centerline, effectively supporting the strip steel as it enters the coiling pinch rolls along the rolling centerline. 2. The opening degree after dynamic pressure calibration effectively eliminates the influence of mechanical clearance and hydraulic component leakage, resulting in more precise position control. 3. It accurately reflects the actual stiffness of the side guide plate. By comparing the actual compression of the spring and the cylinder position feedback value, the degree of equipment deterioration of the side guide plate can be quickly determined, providing a basis for maintenance. 4. By replacing the measuring rod 309 with different lengths, the requirements for opening degree calibration of different specifications and even the limit width can be met. 5. By adjusting the compression of the combined compression spring 302 via the thread, the calibration requirements for different pressures can be met, avoiding the situation where the fixed guide is easily deformed due to excessive pressure, resulting in a distortion of the opening degree. Attached Figure Description

[0029] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:

[0030] Figure 1 This is a schematic diagram of the structure of the opening degree of the guide plates on both sides of the winding machine and the center line calibration device in the prior art.

[0031] Figure 2 This is a top view of the device for calibrating the opening degree and centerline of the guide plates on both sides of the winding machine according to the present invention.

[0032] Figure 3a This is a side view of the winding machine guide plate opening degree and centerline calibration device according to the present invention;

[0033] Figure 3b This is a schematic diagram of the movable measuring scale base of the winding machine side guide plate opening degree and centerline calibration device according to the present invention.

[0034] Figure 4a This is a schematic diagram of the main structure of the reference base plate of the guide plate opening degree and center line calibration device of the winding machine described in this invention;

[0035] Figure 4b This is a side view of the reference base plate of the guide plate opening degree and centerline calibration device of the winding machine described in this invention.

[0036] Figure 5a This is a cross-sectional schematic diagram of the movable measuring scale base of the winding machine side guide plate opening degree and centerline calibration device described in this invention;

[0037] Figure 5b This is a side view of the movable measuring scale base of the winding machine guide plate opening degree and centerline calibration device according to the present invention.

[0038] Figure 6 This is a schematic diagram of the movable measuring scale base of the winding machine side guide plate opening degree and centerline calibration device according to the present invention.

[0039] Figure 7 This is a schematic diagram of the structure of the winding machine guide plate opening degree and center line calibration device during calibration according to the present invention;

[0040] The attached diagram is labeled as follows: 101, calibration base; 200, reference base plate; 201, positioning pin; 202, connecting plate; 203, base support arm; 204, V-shaped guide rail; 205, positioning groove; 206, intersection point; 300, movable measuring scale base; 301, steel pipe; 302, combined compression spring; 303, flat head; 304, fixed end; 305, movable end; 306, stop sleeve; 307, first sliding guide groove; 308, second sliding guide groove; 309, measuring rod; 310, inverted V-shaped rail groove. Detailed Implementation

[0041] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of the present invention, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part:

[0042] As attached Figure 2 - Appendix Figure 7As shown, this invention is a device for calibrating the opening degree and centerline of the guide plates on both sides of a winding machine. It includes a calibration base 101, a reference base plate 200, and a movable measuring scale base 300. The reference base plate 200 is mounted on the calibration base 101, and a V-shaped guide rail 204 is provided on the upper part of the reference base plate 200. The movable measuring scale base 300 is movably mounted on the V-shaped guide rail 204 via an inverted V-shaped groove 310. The movable measuring scale base 300 includes a steel pipe 301, a combined compression spring 302, a fixed end 304, a movable end 305, a stop sleeve 306, a first sliding guide groove 307, a second sliding guide groove 308, and a measuring rod 309. The above structure addresses the problems in the prior art and proposes an improved technical solution. In existing coiling machines, the front guide plates guide strips of varying widths along the rolling centerline into the pinch rolls to achieve a good coil shape. These guide plates are divided into straight and inclined sections. The straight section's drive and operation sides are driven by four hydraulic cylinders, with servo valves controlling both the position and pressure of the guide plates. During position control, the opening degree is set to the hot value of the strip width before entering the guide plate plus an offset, and is promptly adjusted based on the overall width control accuracy. Precise opening degree control is crucial to prevent the formation of tower-shaped coils. During pressure control, the side guide plates apply a certain pressure value, supporting the strip as it is guided into the coiling machine along the rolling centerline. Maintaining centerline stability prevents edge damage caused by uneven force on one side. Due to long-term operation, gaps inevitably develop in the internal components of the side guide plate mechanism, and internal leakage in the hydraulic system can cause discrepancies between the opening degree under pressure control and the feedback values ​​from the hydraulic cylinder position sensors for the same opening degree under position control. This results in data feedback distortion, centerline deviation, and inaccurate opening degree. At this point, the machine should be stopped, and the device should be used to simulate the normal production load pressure control to calibrate and measure the positional relationship of the guide plate openings on both sides, center line, etc., and appropriate maintenance and adjustments should be made based on the measured values. For any problems found, regular measurement and maintenance through routine inspections are necessary to ensure [the system functions correctly]. Figure 1 The calibration device 100 shown ( Figure 1 The four positioning holes 102 of the two mounting bases Figure 2The centerline connection reference coincides with the rolling centerline and the midpoint of the lower pinch roll during winding. Then, calibration is performed using the calibration device and method of this invention. The calibration device and method of this invention have the following main technical innovations: 1. A combined compression spring is used, increasing the calibration pressure. The spring stiffness can be adjusted via threads to adapt to different calibration pressure requirements without increasing weight or volume. 2. A measurement method with one end fixed and the other movable is used. Adding a fixed end as a measurement reference reduces dimensional fluctuations caused by pressure fluctuations by half compared to two-end movable measurements, resulting in more accurate measurements. 3. By measuring the centerline and alignment under simulated production load conditions, the device can better track the equipment degradation status of the side guide plate during actual operation than under no-load conditions. It allows for rapid judgment based on actual measurement data, avoiding unnecessary production quality losses during production. 4. General calibration only calibrates the actual opening data under position loop control. In actual operation, the side guide plate is mostly controlled by a pressure loop, causing some error between the actual and calibration data. This device calibrates the position accuracy under pressure loop load conditions. Therefore, the calibration measurement results are relatively accurate in both the position loop and pressure loop control modes. 5. The measurement was modified based on the existing system, with virtually no changes required on-site. 6. The ball joint error at both ends eliminates the error caused by the gap in the measuring surface caused by the deformation and tilting of the side guide plate during the measurement process. The calibration device and calibration method of this invention mainly achieve the following technical effects: 1. By using the combined compression spring of the loaded side guide plate, the movement trajectory of the centerline of the side guide in the pressure control mode is fully simulated, truly reflecting the centerline deviation value. After maintenance and adjustment, the centerline fitted by the side guide is the true rolling centerline, which serves to support the strip steel to enter the coiling pinch roll along the rolling centerline. 2. The opening degree after dynamic pressure calibration fully eliminates the influence of mechanical clearance and hydraulic component leakage, making the position control accuracy more precise. 3. It truly reflects the actual stiffness of the side guide plate. By comparing the actual compression of the spring and the position feedback value of the hydraulic cylinder, the equipment deterioration degree of the side guide plate can be quickly determined, providing a basis for maintenance. 4. By replacing the measuring rods 309 with different lengths, the requirements for calibrating the opening degree of different specifications and even the limit width can be met. 5. By adjusting the compression amount of the combined compression spring 302 via threads, the calibration requirements for different pressures can be met, avoiding the situation where the fixed guide is easily deformed due to excessive pressure, leading to inaccurate opening degree. The opening degree and centerline calibration device and method for the side guide plates of the coiling machine described in this invention can accurately calibrate the opening degree and centerline of the side guide plates under load, taking into account both the measurement of the side guide plate gap and the assessment of its condition, providing a basis for the maintenance of the side guide plates, and eliminating the problem of strip deviation affecting the coil shape quality.

[0043] The reference base plate 200 includes two positioning pins 201, a connecting plate 202, two base support arms 203, and a V-shaped guide rail 204. One end of each positioning pin 201 of the reference base plate 200 is fitted into an inner hole of the connecting plate 202, and the other end of each positioning pin 201 is inserted into a positioning hole 102 of the calibration base 101. This arrangement ensures accurate positioning of the measurement reference during measurement. The two base support arms 203 of the reference base plate 200 are welded to the connecting plate 202 from square steel, supporting the measuring device on the laminar flow roller conveyor during measurement to maintain stability. The V-shaped guide rail 204 is precisely positioned within the positioning groove 205 of the base support arm 203 through machining. The mounting base 101 adopts the structure of existing technology, reducing the workload of device fabrication. The mounting base 101 is used to install and position the reference base plate 200, facilitating subsequent calibration.

[0044] The movable measuring scale base 300 has a steel pipe 301 with one end threaded and connected to the fixed end 304. The other end of the steel pipe 301 has a stop sleeve 306 welded to it after the combined compression spring 302 and the movable end 305 are installed, to stop the movable end 305. The spring force of the combined compression spring 302 can be adjusted by rotating the flat head 303 on the fixed end 304 with a wrench to rotate the thread.

[0045] The fixed end 304 of the movable measuring scale base 300 is machined into a spherical surface at one end and threaded at the other end, with the core hollowed out to reduce weight; the movable end 305 is a steel pipe with a finely machined inner wall, a clamping flange is welded to one end of the movable end 305, and measuring rods 309 of different lengths are installed at the other end of the movable end 305 through clearance fit to accommodate the measurement of the opening of side guide plates of different widths.

[0046] The movable measuring scale base 300 includes a combination spring 302 comprising a large spring and a spring, the specifications of which are determined by the pressure of the side guide plate to be calibrated. The steel tube 301 is marked with a size scale from left to right (300-800mm), and the movable end 305 is marked with a size scale from left to right (0-100mm). In specific structural settings, the scale accuracy can be 0.5mm for precise observation of values.

[0047] The fixed end 304 and the movable end 305 of the movable measuring scale base 300 are welded with a first sliding guide groove 307 and a second sliding guide groove 308. The first sliding guide groove 307 and the second sliding guide groove 308 are respectively provided with inverted V-shaped rail grooves 310, and the center lines of the inverted V-shaped rail grooves 310 on the first sliding guide groove 307 and the second sliding guide groove 308 are on a straight line.

[0048] This invention also relates to a simple method for calibrating the opening degree and centerline of the side guide plates under load, taking into account both the measurement of the side guide plate gap and the assessment of its condition, providing a basis for the maintenance of the side guide plates, and eliminating the problem of strip deviation affecting coil quality. The calibration steps of the method for calibrating the opening degree and centerline of the side guide plates of the coiling machine are as follows:

[0049] S1. During measurement, open the side guide plate to its maximum opening. After confirming safety, hoist the reference base plate 200 to the entrance of the straight section of the laminar flow roller conveyor. Insert the two positioning pins 201 into the positioning holes 102 of the calibration base 101. Place the two base support arms 203 close to the adjacent laminar flow rollers 103. Use a frame level to adjust the levelness and stability of the reference base plate 200. Confirm that the intersection point 206 of the upper center line of the reference base plate 200 is visible. At this time, the V-shaped guide rail 204 is perpendicular to the center line of the rolling line.

[0050] S2. During the test, the side guide plate moves quickly inward from the maximum opening. When the distance to the movable measuring scale seat 300 is less than the set distance (which can be 20 mm), the ball head of the fixed end 304 of the movable measuring scale seat 300 is pressed against the transmission side guide plate. Then, the position control mode is switched to the pressure control mode. After the current detection pressure value is cleared to zero, the measuring scale seat 300 is pressed against at a low speed. Gradually, the operating side guide plate is pressed against the ball head of the measuring rod 309 inserted into the movable end 305.

[0051] S3. As the pressure increases to the set pressure value (which can be 5kN) or as observed on-site, after the side guide plates on both sides are in full contact with the ball heads at both ends of the measuring scale seat, the positions of the position sensors on both sides are zeroed; according to the specific parameters of the device according to the embodiment of this application, the opening is 1100mm at this time, and the starting position of the position sensors on the operating side and the transmission side is assigned to 0.

[0052] S4. Further increase the pressure value to the calibrated pressure, and maintain it for a short time when the set value on one side (which can be 20kN) is reached; at this time, the combined compression spring 302 inside the movable measuring scale base 300 is compressed (e.g., Figure 7 As shown), the ball head of the movable end 305 drives the corresponding first sliding guide groove 307 and second sliding guide groove 308 to move inward. The corresponding scale on the movable end 305 is read as L1mm. At this time, the opening value of the side guide plate under the pressure on both sides is L2=1100-L1. At this time, the scale of the midpoint between the ball heads at both ends of the scale seat is L3=(1100-L1) / 2.

[0053] S5. Under the pressure from both sides, the side guide plate is affected by the gap and leakage of hydraulic components. The scale L3 at the midpoint of L2 will definitely not coincide with the intersection 206 of the center line on the reference base plate 200. The deviation L4 is the deviation between the actual center line and the reference center line when under load. This deviation value is used to provide a basis for adding or removing shims to the corresponding side guide plate to implement gap compensation.

[0054] S6. After clearance compensation or maintenance, the scale L3 at the midpoint of the side guide plate under load should coincide with the intersection 206. Input the opening value L2 at this time into the computer system. This L2 value is the correct value of the opening after the two side guide plates are calibrated under load. Reassign L3 to the two hydraulic cylinder sensors. This is the calibration value after the hydraulic cylinder has overcome clearance, leakage and centerline compensation. It is used as the starting point of the position loop control to complete the calibration.

[0055] Before step S1, use a wrench to rotate the thread of the flat head 303 on the fixed end 304 of the movable measuring scale base 300 to adjust the tightness of the combined compression spring 302. According to the specific parameters of the device in the embodiment of this application, ensure that the distance from the top of the ball head of the fixed end 304 to the other end of the steel pipe 301 is 800±1mm; insert the measuring rod 309 into the inner hole of the movable end 305. At this time, the total length of the movable measuring scale base 300 is 800+300=1100mm.

[0056] After step S1, lift the movable measuring scale base 300 and install it on the reference base plate 200. Align the first sliding guide groove 307 and the second sliding guide groove 308 on the reference base plate 200 with the V-shaped guide rail 204 on the reference base plate 200 and keep it sliding smoothly on the rail.

[0057] Before step S1, set the pressure values ​​on both sides of the servo pressure ring, and determine the specifications of the combined compression spring 302 of the movable measuring scale base 300, including the two compression springs of different sizes, based on the pressure on both sides. Figure 5a and Figure 5b The structure shown assembles the steel pipe 301, the combined compression spring 302, the fixed end 304, the movable end 305, the stop sleeve 306, the first sliding guide groove 307, the second sliding guide groove 308, and the measuring rod 309 into a movable measuring scale base 300.

[0058] After step S2, as the pressure gradually increases to the set pressure value or through on-site observation, ensure that the ball heads at both ends of the movable measuring scale base 300 are in full contact with the side guide plates, then zero the positions of the position sensors on both sides; at this time, the opening is 1100mm, and the starting position of the position sensors on the operating side and the transmission side is set to 0.

[0059] After step S6, the opening of the straight section outlet side is measured. According to the process requirements, the opening of the side guide plate inlet is 0-10mm larger than the opening of the outlet. Simply replace the corresponding measuring rod 309 that is 10mm shorter and repeat the above process to complete the calibration.

[0060] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A method for calibrating the opening degree and centerline of the guide plates on both sides of a winding machine, characterized in that: The opening degree and center line calibration device of the two-side guide plate of the coiler comprises a calibration base (101), a reference base plate (200) and a movable measuring scale seat (300), the reference base plate (200) is installed on the calibration base (101), a V-shaped guide rail (204) is arranged on the upper portion of the reference base plate (200), the movable measuring scale seat (300) is movably clamped on the V-shaped guide rail (204) through an inverted V-shaped rail groove (310), and the movable measuring scale seat (300) comprises a steel pipe (301), a combined compression spring (302), a fixed end (304), a movable end (305), a stop sleeve (306), a first sliding guide groove (307), a second sliding guide groove (308) and a measuring rod (309); The calibration steps of the opening degree and center line calibration method of the two-side guide plate of the coiler are as follows: S1. When measuring, the side guide plate is opened to the maximum opening, and after confirming safety, the reference base plate (200) is hoisted to the entrance of the straight-line section of the laminar flow roller, two positioning pins (201) are inserted into the positioning holes (102) of the calibration base (101), the two base support arms (203) are close to the adjacent laminar flow rollers (103), the levelness and stability of the reference base plate (200) are adjusted by using the frame-type level, it is confirmed that the intersection (206) of the center lines on the reference base plate (200) is visible, and at this time, the V-shaped guide rail (204) is perpendicular to the center line of the rolling line; S2. When testing, the side guide plate is quickly moved inward from the maximum opening, when the distance from the movable measuring scale seat (300) is less than the set distance, the ball head of the fixed end (304) of the movable measuring scale seat (300) is attached to the transmission side guide plate, and then the position control mode is switched to the pressure control mode, the current detection pressure value is cleared, and then the movable measuring scale seat (300) is further pressed at low speed, and the operation side guide plate is gradually attached to the ball head of the measuring rod (309) of the movable end (305); S3. When the pressure is increased to the set pressure value or observed on site, after the two side guide plates are in full contact with the ball heads at the two ends of the measuring scale seat, the positions of the two position sensors are cleared; S4. The pressure value is further increased to calibrate the pressure, and when the set pressure value on one side is reached, a short time is maintained; at this time, the combined compression spring (302) in the movable measuring scale seat (300) is compressed, the ball head of the movable end (305) drives the corresponding first sliding guide groove (307) and second sliding guide groove (308) to move inward, and the corresponding scale on the movable end (305) is read as L1 mm; at this time, the opening degree value of the side guide plate under the pressure on both sides is L2=1100-L1; at this time, the scale of the midpoint between the ball heads at the two ends of the measuring scale seat is L3=(1100-L1) / 2; S5. Under the pressure on both sides, the midpoint L3 of L2 is necessarily not coincided with the intersection (206) of the center lines on the reference base plate (200) due to the influence of the gap and the leakage of the hydraulic element, and the deviation L4 between them is the deviation of the actual center line from the reference center line when carrying a load; this deviation value is used to provide a basis for adding or subtracting shims for gap compensation for the corresponding side guide plate. S6. After the gap compensation or maintenance, the scale L3 of the midpoint of the side guide plate with load should be coincided with the intersection (206), and the opening value L2 at this time is input into the computer system, and this L2 value is the correct value of the opening degree after the calibration of the two side guide plates with load, and the L3 of the two hydraulic cylinder sensors is revalued, which is the calibration value after the hydraulic cylinder overcomes the gap, leakage and middle line compensation, and is used as the starting point of the position ring control to complete the calibration.

2. The method of calibrating the opening of the both-side guide plates of the coiler and the center line according to claim 1, characterized in that: The reference base plate (200) comprises two positioning pins (201), a connecting plate (202), two base support arms (203) and a V-shaped guide rail (204).

3. The method of calibrating the opening degree of the both-side guide plates of the coiler and the center line according to claim 2, characterized in that: One end of each positioning pin (201) of the reference base plate (200) is transitionally fitted and installed in an inner hole of the connecting plate (202), and the other end of each positioning pin (201) is inserted into the positioning hole (102) of the calibration base (101).

4. The method of calibrating the opening degree of the both-side guide plates of the coiler and the center line according to claim 3, characterized in that: The two base support arms (203) of the reference base plate (200) are welded on the connecting plate (202), and the V-shaped guide rail (204) is positioned in the positioning groove (205) of the base support arm (203).

5. The method of calibrating the opening degree of both sides of the coiler guide plate and the center line according to claim 1 or 2, characterized in that: One end of the steel pipe (301) of the movable measurement scale base (300) is threaded and connected with the fixed end (304), and the other end of the steel pipe (301) is welded with a stop sleeve (306) after installing a combined compression spring (302) and a movable end (305), which is used to stop the movable end (305).

6. The method of calibrating the opening degree of the both-side guide plates of the coiler and the center line according to claim 5, characterized in that: One end of the fixed end (304) of the movable measurement scale base (300) is machined into a spherical surface, and the other end is threaded, and the core is hollowed out to reduce weight; one end of the movable end (305) is welded with a compression flange, and the other end of the movable end (305) is installed with a measuring rod (309) of different lengths through a clearance fit.

7. The method of calibrating the opening degree of the both-side guide plates of the coiler and the center line according to claim 6, characterized in that: The combined compression spring (302) of the movable measurement scale base (300) comprises a large spring and a spring; the steel pipe (301) is marked with a size scale from left to right 300-800mm, and the movable end (305) is marked with a size scale from left to right 0-100mm.

8. The method of calibrating the opening degree of the both-side guide plates of the coiler and the center line according to claim 7, characterized in that: The fixed end (304) and the movable end (305) of the movable measurement scale base (300) are welded with a first sliding guide groove (307) and a second sliding guide groove (308), and a reverse V-shaped rail groove (310) is arranged on the first sliding guide groove (307) and the second sliding guide groove (308) respectively, and the midlines of the reverse V-shaped rail grooves (310) on the first sliding guide groove (307) and the second sliding guide groove (308) are on a straight line.

9. The method of calibrating the opening degree of the both-side guide plates of the coiler and the center line according to claim 8, characterized in that: Before S1, rotate the flat head (303) on the fixed end (304) of the movable measurement scale base (300) to adjust the tightness of the combined compression spring (302); insert the measuring rod (309) into the inner hole of the movable end (305).

10. The method of calibrating the opening degree of the both-side guide plates of the coiler and the center line according to claim 8, characterized in that: After S1, hoist the movable measurement scale base (300), install it on the reference base plate (200), align the first sliding guide groove (307) and the second sliding guide groove (308) on the top with the V-shaped guide rail (204) on the reference base plate (200), and keep it sliding smoothly on the track.

11. The coiler both-side guide plate opening degree and centerline calibration method according to claim 8, characterized in that: Before S1, set the pressure value of both sides of the servo pressure ring, and determine the combined compression spring (302) of the movable measuring scale seat (300) according to the pressure of both sides. The size of the two compression springs is used to assemble the steel pipe (301), the combined compression spring (302), the fixed end (304), the movable end (305), the stop sleeve (306), the first sliding guide groove (307), the second sliding guide groove (308), and the measuring rod (309) into the movable measuring scale seat (300).

12. The coiler both-side guide plate opening degree and centerline calibration method according to claim 8, characterized in that: After S2, with the gradual increase of the pressure to the set pressure value or the on-site observation, the two sides of the guide plate are in full contact with the ball head at both ends of the movable measuring scale seat (300), and the position of the position sensor is cleared. At this time, the opening degree is 1100mm, and the starting position of the position sensor of the operation side and the transmission side is assigned as 0.

13. The method of calibrating both side guide opening and center line of a coiler according to claim 8, wherein: After S6, the measurement of the opening degree of the outlet side of the straight section, according to the process requirement, the inlet opening degree of the side guide plate is larger than the outlet opening degree by 0-10mm, as long as the corresponding measuring rod (309) of 10mm is replaced, the above process can be repeated to complete the calibration.

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