Roll gap measuring device and method

Abstract

The application discloses a kind of roll gap measuring device and method, the roll gap measuring device includes: roll gap adjusting mechanism and data processing terminal, the roll gap adjusting mechanism is electrically connected with the data processing terminal.The roll gap measuring device of the embodiment of the application, by setting laser displacement sensor between two adjacent rollers to respectively collect the spacing between each laser displacement sensor and roll, then based on the spacing, the size of the two sides roll gap between two adjacent rollers is calculated, laser displacement sensor is mature as measuring component technology, greatly reduces the measurement cost, not only accurate measurement result, at the same time, avoid the difference of the roll gap measured in the current similar measurement bearing seat spacing, the change of the clearance, the expansion and deformation of the roll caused by the temperature of the roll and the equipment calender, the corresponding measurement result can be obtained in real time in this area roll face, and the measurement result precision is high based on the measurement part coaxial with roll pressure part to measure roll gap.

Description

Technical Field

[0001] This invention relates to the field of roller pressing equipment technology, and in particular to a roller gap measuring device and method. Background Technology

[0002] In dry process multi-roll pressing equipment, there are currently three main methods for measuring roll gap: First, measuring the distance between bearing seats to define the size of the roll gap, but this method cannot accurately reflect the size of the roll gap; second, using an online projection image measuring instrument (CMOS / CCD) to directly measure the roll gap, but this method results in decreased accuracy; and third, using a laser measuring instrument (rotating prism laser scanning type) to directly measure the roll gap, but this method is very expensive.

[0003] Therefore, there is an urgent need for a new roll gap measuring device or method that has the advantages of real-time detection, low cost, and high detection accuracy. Summary of the Invention

[0004] In view of the above problems, the present invention is proposed to provide a roll gap measuring device and method that overcomes or at least partially solves the above problems.

[0005] Other features and advantages of the invention will become apparent from the following detailed description, or may be learned in part by practice of the invention.

[0006] According to a first aspect of the present invention, a roll gap measuring device is provided, comprising: a roll gap adjusting mechanism and a data processing terminal, wherein the roll gap adjusting mechanism is electrically connected to the data processing terminal; The roll gap adjustment mechanism includes a first movable roller, a second movable roller, a first movable bearing seat, a second movable bearing seat, an upper crossbeam of the frame, a lower crossbeam of the frame, a following upper mounting bracket, a following lower mounting bracket, a first laser displacement sensor, and a second laser displacement sensor. The two upper crossbeams of the frame are arranged in parallel, and the lower crossbeam of the frame is respectively arranged directly below the upper crossbeam of the frame. The first movable bearing seat and the second movable bearing seat are respectively movably arranged between the upper crossbeam of the frame and the lower crossbeam of the frame on the same side. The two ends of the first movable roller are respectively mounted on the first movable bearing seat, and the two ends of the second movable roller are respectively mounted on the second movable bearing seat. The first movable bearing seat is provided with a follower-type upper mounting bracket, and a first laser displacement sensor is installed on the follower-type upper mounting bracket. The laser beam of the first laser displacement sensor is directed toward the second movable roller. The first laser displacement sensor is used to obtain a first distance between itself and the second movable roller. The second movable bearing seat is provided with a following lower mounting bracket, and a second laser displacement sensor is installed on the following lower mounting bracket. The laser beam of the second laser displacement sensor is directed toward the first movable roller. The second laser displacement sensor is used to obtain a second distance between itself and the first movable roller. The first laser displacement sensor and the second laser displacement sensor are electrically connected to the data processing terminal, which is used to calculate and determine the size of the first roller gap between the first movable roller and the second movable roller based on the first gap and the second gap. The first movable roller includes a roller pressing part, a measuring part, and a shaft head. The measuring part is provided at both ends of the roller pressing part, and the shaft head is provided at the end of the measuring part away from the roller pressing part. The shaft head is rotatably mounted on the first movable bearing seat. In some embodiments of the present invention, the rolling section, the measuring section, and the shaft head are all cylindrical structures, and the cross-sectional diameters of the rolling section and the measuring section are in the order that the rolling section is larger than the measuring section.

[0007] In some embodiments of the present invention, the laser extension direction of the first laser displacement sensor and the laser extension direction of the second laser displacement sensor are both parallel to the horizontal plane and perpendicular to the vertical plane.

[0008] In some embodiments of the present invention, a fixed bearing seat is also fixedly provided between the upper crossbeam of the frame and the lower crossbeam of the frame, and a fixed roller is provided on the side of the second movable roller away from the first movable roller, and the two ends of the fixed roller are respectively mounted on the fixed bearing seat.

[0009] In some embodiments of the present invention, a fixed mounting bracket perpendicular to the ground is provided on the side of the fixed bearing seat facing the second movable roller. The fixed mounting bracket is provided with a third laser displacement sensor and a fourth laser displacement sensor from top to bottom. The laser beam of the third laser displacement sensor is directed toward the fixed roller, and the third laser displacement sensor is used to obtain a third distance between itself and the fixed roller. The laser beam of the fourth laser displacement sensor is directed toward the second movable roller, and the fourth laser displacement sensor is used to obtain a fourth distance between itself and the second movable roller.

[0010] In some embodiments of the present invention, the third laser displacement sensor and the fourth laser displacement sensor are electrically connected to the data processing terminal, and the data processing terminal is used to calculate and determine the size of the second roller gap between the fixed roller and the second movable roller based on the third gap and the fourth gap.

[0011] In some embodiments of the present invention, the first movable roller, the second movable roller, and the fixed roller have the same structure.

[0012] According to a second aspect of the present invention, a method for measuring roll gap is provided, comprising the following steps: The roll gap between the first movable roller and the second movable roller is calculated and calibrated to obtain the first calibration coefficient K1; Obtain the first distance H1 between the first laser displacement sensor itself and the measuring part of the second movable roller, and obtain the second distance H2 between the second laser displacement sensor itself and the measuring part of the first movable roller; Obtain the third distance H3 between the current third laser displacement sensor and the fixed roller, and obtain the fourth distance H4 between the current fourth laser displacement sensor and the second movable roller; The first gap ΔH1 between the first movable roller and the second movable roller is obtained based on the first gap H1 and the second gap H2, then ΔH1 = (H1 + H2 - K1) / 2; and the second gap ΔH2 between the second movable roller 2 and the fixed roller 3 is calculated and determined based on the third gap and the fourth gap, then ΔH2 = H3 + H4 - K2.

[0013] In some embodiments of the present invention, the calibration of the roll gap calculation between the first movable roller and the second movable roller to obtain the first calibration coefficient K1 includes: Prepare a calibration feeler gauge with a predetermined thickness S, and place it between the first movable roller and the second movable roller so that the size of the roller gap on both sides between the first movable roller and the second movable roller is exactly the same as the predetermined thickness S of the calibration feeler gauge. If the current distance h1 between the first laser displacement sensor and the measuring part of the second movable roller is obtained, and the current distance h2 between the second laser displacement sensor and the measuring part of the first movable roller is obtained, then the first calibration coefficient K1 = h1 + h2 - 2S.

[0014] In some embodiments of the present invention, the calibration of the roll gap calculation between the second movable roll and the fixed roll to obtain the second calibration coefficient K2 includes: Prepare a calibration feeler gauge of a predetermined length S and place it between the second movable roller and the fixed roller so that the size of the roller gap on both sides between the second movable roller and the fixed roller is exactly the same as the predetermined thickness S of the calibration feeler gauge. If the current distance h3 between the third laser displacement sensor and the fixed roller is obtained, and the current distance h4 between the fourth laser displacement sensor and the measuring part of the second movable roller is obtained, then the second calibration coefficient K2 = h3 + h4 - S.

[0015] In some embodiments of the present invention, the roll gap measurement method further includes: Set the target roll gap between adjacent rolls and determine the type of adjacent rolls. If the adjacent rolls are a first movable roll and a second movable roll, adjust the first roll gap. If the adjacent rolls are a second movable roll and the fixed roll, adjust the second roll gap. The positions of the first movable roller and the second movable roller are adjusted synchronously to adjust the first roller gap between the first movable roller and the second movable roller so that the first roller gap reaches the target roller gap size; Adjust the position of the second movable roller to adjust the second roller gap between the second movable roller and the fixed roller, so that the second roller gap reaches the target roller gap size.

[0016] According to a third aspect of the present invention, a method for measuring roll gap is provided, comprising the following steps: S5. The roll gaps at both ends between the first movable roller and the second movable roller are calculated and calibrated to obtain a first calibration coefficient K1 and a third calibration coefficient K3. Based on the first calibration coefficient K1 and the third calibration coefficient K3, the first roll gap ΔH1 and the third roll gap ΔH3 at both ends between the first movable roller and the second movable roller are calculated respectively. The calculation methods of the third calibration coefficient K3 and the third roll gap ΔH3 are the same as those of the first calibration coefficient K1 and the first roll gap ΔH1. S6. The roll gaps at both ends between the second movable roller and the fixed roller are calculated and calibrated to obtain the second calibration coefficient K2 and the fourth calibration coefficient K4. Based on the first calibration coefficient K2 and the third calibration coefficient K4, the second roll gap ΔH2 and the fourth roll gap ΔH4 at both ends between the second movable roller and the fixed roller are calculated respectively. The calculation methods of the third calibration coefficient K4 and the fourth roll gap ΔH4 are the same as those of the first calibration coefficient K2 and the second roll gap ΔH2.

[0017] The technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages: The roll gap measuring device described in this embodiment of the invention collects the distance between each laser displacement sensor and the roller by setting laser displacement sensors between two adjacent rollers. It calculates and determines the first roll gap size between the first and second movable rollers based on the first and second distances, and calculates and determines the second roll gap size between the fixed roller and the second movable roller based on the third and fourth distances. Laser displacement sensors, as a mature measuring component, greatly reduce measurement costs. The device not only provides accurate measurement results but also avoids the roll gap discrepancies caused by changes in clearance in similar current bearing seat spacing measurements. Furthermore, the device measures the roll surface in real-time, even when the roller temperature and rolling process cause expansion and deformation. Since the roll gap measurement is performed using a measuring unit coaxial with the roller pressing section, the resulting measurement results are highly accurate.

[0018] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A side view of a roll gap measuring device provided in an embodiment of the present invention; Figure 2 This is a top view of the first movable roller and the second movable roller; Figure 3 A schematic diagram of the first roll gap between the first movable roller and the second movable roller; Figure 4 This is a schematic flowchart of the roll gap measurement method according to an embodiment of the present invention; Figure 5 This is a schematic flowchart of another embodiment of the roll gap measurement method described in this invention.

[0021] Explanation of reference numerals in the attached figures: 1. First movable roller; 2. Second movable roller; 3. Fixed roller; 4. First movable bearing seat; 5. Second movable bearing seat; 6. Fixed bearing seat; 7. Upper crossbeam of the frame; 8. Lower crossbeam of the frame; 9. Follower-type upper mounting bracket; 10. Follower-type lower mounting bracket; 11. First laser displacement sensor; 12. Second laser displacement sensor; 13. Fixed mounting bracket; 14. Third laser displacement sensor; 15. Fourth laser displacement sensor; 16. Roll pressing section; 17. Measuring section; 18. Shaft head; 100. Roll gap adjustment mechanism; 200. Data processing terminal. Detailed Implementation

[0022] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings.

[0023] The accompanying drawings illustrate various structural schematics according to embodiments of this application. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0024] It should be noted that the terms "first," "second," etc., used in this application can be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from the second element. The terms "comprising" and "having," and any variations thereof, used in this application, are intended to cover non-exclusive inclusion. The term "multiple" used in this application refers to two or more. In the context of this application, similar or identical parts may be represented by the same or similar reference numerals.

[0025] To better understand the above technical solutions, the following will describe the above technical solutions in detail with reference to specific implementation methods. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the present invention, rather than limitations on the technical solutions of the present invention. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other.

[0026] Figure 1 This is a schematic flowchart of a roll gap measuring device provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the roll gap measuring device includes a roll gap adjusting mechanism 100 and a data processing terminal 200, wherein the roll gap adjusting mechanism 100 is electrically connected to the data processing terminal 200. The roll gap adjustment mechanism 100 includes a first movable roller 1, a second movable roller 2, a first movable bearing seat 4, a second movable bearing seat 5, an upper frame crossbeam 7, a lower frame crossbeam 8, a following upper mounting bracket 9, a following lower mounting bracket 10, a first laser displacement sensor 11, and a second laser displacement sensor 12. The two upper frame crossbeams 7 are arranged in parallel, and the lower frame crossbeam 8 is respectively arranged directly below the upper frame crossbeam 7. The first movable bearing seat 4 and the second movable bearing seat 5 are respectively movably arranged between the upper frame crossbeam 7 and the lower frame crossbeam 8 on the same side. The two ends of the first movable roller 1 are respectively mounted on the first movable bearing seat 4, and the two ends of the second movable roller 2 are respectively mounted on the second movable bearing seat 5. The first movable bearing seat 4 is provided with a follower-type upper mounting bracket 9, and a first laser displacement sensor 11 is installed on the follower-type upper mounting bracket 9. The laser beam of the first laser displacement sensor 11 is directed toward the second movable roller 2. The first laser displacement sensor 11 is used to obtain the first distance between itself and the second movable roller 2. The second movable bearing seat 5 is provided with a following lower mounting bracket 10, and a second laser displacement sensor 12 is installed on the following lower mounting bracket 10. The laser beam of the second laser displacement sensor 12 is directed toward the first movable roller 1. The second laser displacement sensor 12 is used to obtain the second distance between itself and the first movable roller 1. The first laser displacement sensor 11 and the second laser displacement sensor 12 are electrically connected to the data processing terminal 200. The data processing terminal 200 is used to calculate and determine the size of the first roller gap between the first movable roller 1 and the second movable roller 2 based on the first gap and the second gap.

[0027] In this embodiment of the invention, the laser extension direction of the first laser displacement sensor 11 and the laser extension direction of the second laser displacement sensor 12 are both parallel to the horizontal plane and perpendicular to the vertical plane, and are both located near or coincide with the horizontal plane passing through the central axis of the roller. This makes the first laser displacement sensor 11 and the second laser displacement sensor 12 located in the same plane in the vertical direction, which facilitates the first laser displacement sensor 11 and the second laser displacement sensor 12 to cooperate in accurately measuring the roller gap.

[0028] In this embodiment of the invention, the data processing terminal 200 may be a computer, server, or other terminal with built-in computing software or computing functions; the data transmission method between the data processing terminal 200 and each laser displacement sensor may be wireless transmission, such as Bluetooth, 5G, or WIFI.

[0029] In this embodiment of the invention, a fixed bearing seat 6 is also fixedly provided between the upper crossbeam 7 of the frame and the lower crossbeam 8 of the frame, and a fixed roller 3 is provided on the side of the second movable roller 2 away from the first movable roller 1, with the two ends of the fixed roller 3 respectively mounted on the fixed bearing seat 6.

[0030] A fixed mounting bracket 13 perpendicular to the ground is provided on the side of the fixed bearing seat 6 facing the second movable roller 2. The fixed mounting bracket 13 is provided with a third laser displacement sensor 14 and a fourth laser displacement sensor 15 from top to bottom. The laser beam of the third laser displacement sensor 14 is directed toward the fixed roller 3, and the third laser displacement sensor 14 is used to obtain the third distance between itself and the fixed roller 3. The laser beam of the fourth laser displacement sensor 15 is directed toward the second movable roller 2, and the fourth laser displacement sensor 15 is used to obtain the fourth distance between itself and the second movable roller 2.

[0031] The third laser displacement sensor 14 and the fourth laser displacement sensor 15 are electrically connected to the data processing terminal 200. The data processing terminal 200 is used to calculate and determine the size of the second roller gap between the fixed roller 3 and the second movable roller 2 based on the third gap and the fourth gap.

[0032] In this embodiment of the invention, the first movable roller 1, the second movable roller 2, and the fixed roller 3 have the same structure.

[0033] Combination Figure 2 As shown, Figure 2 The image shows a top view of the first movable roller 1 and the second movable roller 2. Taking the first movable roller 1 as an example, the first movable roller 1 includes a rolling section 16, a measuring section 17, and a shaft head 18. The two ends of the rolling section 16 are respectively provided with coaxial measuring sections 17. The end of the measuring section 17 away from the rolling section 16 is provided with a shaft head 18. The shaft head 18 is rotatably mounted on the first movable bearing seat 4. The rolling section 16, the measuring section 17, and the shaft head 18 are all cylindrical structures, and the cross-sectional diameters of the rolling section 16 and the measuring section 17 are in the order that the rolling section 16 > the measuring section 17. The main function of the rolling section 16 is to roll the electrode sheet or electrode film. The measuring section 17 is used as a reference when measuring the gap between two adjacent rollers. The gap is, for example, the distance between the measuring sections 17 between the first movable roller 1 and the second movable roller 2.

[0034] Combination Figure 3 As shown, Figure 3This is a schematic diagram of the first roll gap between the first movable roller 1 and the second movable roller 2. The distance between the rolling pressing part 16 of the first movable roller 1 and the rolling pressing part 16 of the second movable roller 2 is the width of the first roll gap. The first laser displacement sensor 11 and the second laser displacement sensor 12 are both located in the middle of the measuring part 17 of the first movable roller 1 and the second movable roller 2. That is, the first distance is the distance between the first laser displacement sensor 11 itself and the measuring part 17 of the second movable roller 2, and the second distance is the distance between the second laser displacement sensor 12 itself and the measuring part 17 of the first movable roller 1.

[0035] Specifically, the principle by which this embodiment of the invention calculates and determines the size of the first gap between the first movable roller 1 and the second movable roller 2 based on the first gap and the second gap is as follows: First, the roll gap between the first movable roller 1 and the second movable roller 2 is calculated and calibrated to obtain the first calibration coefficient K1. That is, a calibration feeler gauge with a predetermined thickness S is prepared and placed between the first movable roller 1 and the second movable roller 2, so that the size of the roll gap on both sides between the first movable roller 1 and the second movable roller 2 is exactly the same as the predetermined thickness S of the calibration feeler gauge. The current distance h1 between the first laser displacement sensor 11 and the measuring part 17 of the second movable roller 2, and the current distance h2 between the second laser displacement sensor 12 and the measuring part 17 of the first movable roller 1 are obtained respectively. Then the first calibration coefficient K1 = h1 + h2 - 2S.

[0036] At any given time, the first gap between the first movable roller 1 and the second movable roller 2 is ΔH1 = (H1 + H2 - K1) / 2, where H1 is the first gap and H2 is the second gap.

[0037] In other embodiments of the present invention, the first calibration coefficient K1 can also be calculated by directly bonding the first movable roller 1 and the second movable roller 2 together, that is, the predetermined thickness S in the aforementioned formula is 0. Calibration in this way requires ensuring that no hard collision occurs when the first movable roller 1 and the second movable roller 2 are bonded together, so as to avoid damage to the rollers.

[0038] The principle of calculating and determining the second gap size between the second movable roller 2 and the fixed roller 3 based on the third and fourth gaps in this embodiment of the invention is as follows: For the case where the adjacent rollers are a movable roller and a fixed roller 3, that is, the calculation of the second gap between the second movable roller 2 and the fixed roller 3 includes: This embodiment of the invention calibrates the gap calculation between the second movable roller 2 and the fixed roller 3 to obtain a second calibration coefficient K2; the calibration principle of the second calibration coefficient K2 is the same as the calibration principle of the second calibration coefficient K1, that is, a calibration feeler gauge of a predetermined length S is prepared and placed between the second movable roller 2 and the fixed roller 3, so that the gap size on both sides between the current second movable roller 2 and the fixed roller 3 is exactly the same as the predetermined thickness S of the calibration feeler gauge, and the current gap h3 between the current third laser displacement sensor 14 and the fixed roller 3 and the current gap h4 between the current fourth laser displacement sensor 15 and the measuring part 17 of the second movable roller 2 are obtained respectively, then the second calibration coefficient K2 = h3 + h4 - S.

[0039] Then at any given time, the second gap between the second movable roller 2 and the fixed roller 3 is ΔH2 = H3 + H4 - K2, where H3 is the third gap and H4 is the fourth gap.

[0040] In other embodiments of the present invention, the target roll gap between adjacent rollers can be set according to actual application requirements. If the adjacent rollers are all movable rollers, the positions of the first movable roller 1 and the second movable roller 2 are adjusted synchronously to adjust the first roll gap so that the first roll gap eventually reaches the target roll gap size. If the adjacent rollers are a movable roller and a fixed roller, the position of the second movable roller 2 is adjusted to adjust the second roll gap so that the second roll gap eventually reaches the target roll gap size.

[0041] In another embodiment of the present invention, a method for measuring roll gap is provided. Due to processing errors and assembly errors, for two identical rolls, even with the same calibration method at both ends, the obtained calibration coefficients may be different. To increase the accuracy of roll gap adjustment, this embodiment of the present invention further includes: calculating and calibrating the roll gap at both ends between the first movable roll 1 and the second movable roll 2 to obtain a first calibration coefficient K1 and a third calibration coefficient K3. The calculation method of the third calibration coefficient K3 is the same as that of the first calibration coefficient K1. Based on the first calibration coefficient K1 and the third calibration coefficient K3, the first roll gap ΔH1 and the third roll gap ΔH3 at both ends between the first movable roll 1 and the second movable roll 1 are calculated respectively. The calculation method for the third roll gap △H3 is the same as that for the first roll gap △H1, and the specific calculation process for the first roll gap △H1 is described above. Furthermore, the roll gap calculations at both ends between the second movable roller 2 and the fixed roller 3 are calibrated to obtain a second calibration coefficient K2 and a fourth calibration coefficient K4. The calculation method for the third calibration coefficient K4 is the same as that for the first calibration coefficient K2. Based on the first calibration coefficient K2 and the third calibration coefficient K4, the second roll gap △H2 and the fourth roll gap △H4 at both ends between the second movable roller 2 and the fixed roller 3 are calculated respectively. The calculation method for the fourth roll gap △H4 is the same as that for the second roll gap △H2, and the specific calculation process for the first roll gap △H1 is described above. For the same two rollers, this embodiment of the invention can calculate the roll gap size at both ends of the two rollers based on the corresponding calibration coefficients obtained from the calibration, and adjust the roll gap at both ends according to the roll gap size at both ends. The adjustment method can refer to the first roll gap △H1 and the second roll gap △H2 in the aforementioned embodiment, and will not be repeated here.

[0042] The roll gap measuring device described in this embodiment of the invention has the following advantages compared with the prior art: 1. By setting laser displacement sensors between two adjacent rollers to collect the distance between each laser displacement sensor and the roller, the size of the first roller gap between the first movable roller 1 and the second movable roller 2 is calculated and determined based on the first distance and the second distance, and the size of the second roller gap between the fixed roller 3 and the second movable roller 2 is calculated and determined based on the third distance and the fourth distance. Laser displacement sensors are a mature technology as measuring components, which greatly reduces the measurement cost compared with the existing rotating prism laser scanning roller gap measuring device. 2. The laser displacement sensor is small in size and can measure the relative position of the roller surface of the measuring section 17 next to the adjacent roller pressing section 16. The size of the roller gap corresponding to the working area of ​​the roller gap can be obtained through calibration calculation. Not only is the measurement result accurate, but it also avoids the roller gap difference caused by the change in clearance in the bearing seat spacing in similar current measurements. Furthermore, the roller surface can also obtain the corresponding measurement result in real time in this area due to the temperature of the roller and the expansion and deformation of the roller caused by the rolling of the equipment. 3. The two ends of the roller pressing section 16 are respectively provided with coaxial measuring sections 17. The roller gap is measured based on the measuring sections 17 that are coaxial with the roller pressing section 16, and the resulting measurement results are highly accurate.

[0043] Based on the above embodiments, the present invention also provides a method for measuring roll gap, see below. Figure 4 As shown, the roll gap measurement method includes the following steps: S1. The roll gap between the first movable roller 1 and the second movable roller 2 is calculated and calibrated to obtain the first calibration coefficient K1; S2. Obtain the first distance H1 between the first laser displacement sensor 11 and the measuring part 17 of the second movable roller 2, and obtain the second distance H2 between the second laser displacement sensor 12 and the measuring part 17 of the first movable roller 1. S3. The roll gap between the second movable roller 2 and the fixed roller 3 is calculated and calibrated to obtain the second calibration coefficient K2. The third distance H3 between the current third laser displacement sensor 14 and the fixed roller 3 is obtained, and the fourth distance H4 between the current fourth laser displacement sensor 15 and the second movable roller 2 is obtained. S4. Based on the first gap H1 and the second gap H2, the first gap △H1 between the first movable roller 1 and the second movable roller 2 is obtained, then △H1 = (H1 + H2 - K1) / 2; and based on the third gap and the fourth gap, the second gap △H2 between the second movable roller 2 and the fixed roller 3 is calculated and determined, then △H2 = H3 + H4 - K2.

[0044] In this embodiment of the invention, the calibration of the roll gap calculation between the first movable roller 1 and the second movable roller 2 to obtain the first calibration coefficient K1 includes: Prepare a calibration feeler gauge with a predetermined thickness S and place it between the first movable roller 1 and the second movable roller 2, so that the size of the roller gap on both sides between the first movable roller 1 and the second movable roller 2 is exactly the same as the predetermined thickness S of the calibration feeler gauge. If the current distance h1 between the first laser displacement sensor 11 and the measuring part 17 of the second movable roller 2 is obtained, and the current distance h2 between the second laser displacement sensor 12 and the measuring part 17 of the first movable roller 1 is obtained, then the first calibration coefficient K1 = h1 + h2 - 2S.

[0045] In this embodiment of the invention, the calibration of the roll gap calculation between the second movable roller 2 and the fixed roller 3 to obtain the second calibration coefficient K2 includes: Prepare a calibration feeler gauge of a predetermined length S and place it between the second movable roller 2 and the fixed roller 3, so that the size of the roller gap on both sides between the second movable roller 2 and the fixed roller 3 is exactly the same as the predetermined thickness S of the calibration feeler gauge. If the current distance h3 between the third laser displacement sensor 14 and the fixed roller 3 is obtained, and the current distance h4 between the fourth laser displacement sensor 15 and the measuring part 17 of the second movable roller 2 is obtained, then the second calibration coefficient K2 = h3 + h4 - S.

[0046] In this embodiment of the invention, the roll gap measurement method further includes: Set the target roll gap between adjacent rolls and determine the type of adjacent rolls. If the adjacent rolls are the first movable roll 1 and the second movable roll 2, adjust the first roll gap. If the adjacent rolls are the second movable roll 2 and the fixed roll 3, adjust the second roll gap. The positions of the first movable roller 1 and the second movable roller 2 are adjusted synchronously to adjust the first roller gap between the first movable roller 1 and the second movable roller 2 so that the first roller gap reaches the target roller gap size; Adjust the position of the second movable roller 2 to adjust the second roller gap between the second movable roller 2 and the fixed roller 3 so that the second roller gap reaches the target roller gap size.

[0047] Based on the above embodiments, this invention also provides a roll gap measurement method, see below. Figure 5 As shown, it includes the following steps: S5. The roll gaps at both ends between the first movable roller 1 and the second movable roller 2 are calculated and calibrated to obtain a first calibration coefficient K1 and a third calibration coefficient K3. Based on the first calibration coefficient K1 and the third calibration coefficient K3, the first roll gap ΔH1 and the third roll gap ΔH3 at both ends between the first movable roller 1 and the second movable roller 2 are calculated respectively. The calculation methods of the third calibration coefficient K3 and the third roll gap ΔH3 are the same as those of the first calibration coefficient K1 and the first roll gap ΔH1. S6. The roll gaps at both ends between the second movable roller 2 and the fixed roller 3 are calculated and calibrated to obtain the second calibration coefficient K2 and the fourth calibration coefficient K4. Based on the first calibration coefficient K2 and the third calibration coefficient K4, the second roll gap ΔH2 and the fourth roll gap ΔH4 at both ends between the second movable roller 2 and the fixed roller 3 are calculated respectively. The calculation methods of the third calibration coefficient K4 and the fourth roll gap ΔH4 are the same as those of the first calibration coefficient K2 and the second roll gap ΔH2.

[0048] The roll gap measurement method described in this embodiment can be applied to the roll gap measurement device provided in the above embodiment. The roll gap measurement method has the corresponding functional components and beneficial effects of the roll gap measurement device described in the above embodiment. For details, please refer to the embodiment of the roll gap measurement device. The embodiments of this invention will not be repeated here.

[0049] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0050] Similarly, it should be understood that, for the purpose of simplification and aiding understanding of one or more aspects of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof in the description of exemplary embodiments of the invention above. Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and it should be noted that the above embodiments are illustrative of the invention and not restrictive, and that alternative embodiments can be devised by those skilled in the art without departing from its scope.

Claims

1. A roller gap measuring device, characterized in that, include: The roller gap adjustment mechanism and the data processing terminal are electrically connected; The roll gap adjustment mechanism includes a first movable roller, a second movable roller, a first movable bearing seat, a second movable bearing seat, an upper crossbeam of the frame, a lower crossbeam of the frame, a following upper mounting bracket, a following lower mounting bracket, a first laser displacement sensor, and a second laser displacement sensor. The two upper crossbeams of the frame are arranged in parallel, and the lower crossbeam of the frame is respectively arranged directly below the upper crossbeam of the frame. The first movable bearing seat and the second movable bearing seat are respectively movably arranged between the upper crossbeam of the frame and the lower crossbeam of the frame on the same side. The two ends of the first movable roller are respectively mounted on the first movable bearing seat, and the two ends of the second movable roller are respectively mounted on the second movable bearing seat. The first movable bearing seat is provided with a follower-type upper mounting bracket, and a first laser displacement sensor is installed on the follower-type upper mounting bracket. The laser beam of the first laser displacement sensor is directed toward the second movable roller. The first laser displacement sensor is used to obtain a first distance between itself and the second movable roller. The second movable bearing seat is provided with a following lower mounting bracket, and a second laser displacement sensor is installed on the following lower mounting bracket. The laser beam of the second laser displacement sensor is directed toward the first movable roller. The second laser displacement sensor is used to obtain a second distance between itself and the first movable roller. The first laser displacement sensor and the second laser displacement sensor are electrically connected to the data processing terminal, which is used to calculate and determine the size of the first roller gap between the first movable roller and the second movable roller based on the first gap and the second gap. The first movable roller includes a roller pressing part, a measuring part, and a shaft head. The measuring part is provided at both ends of the roller pressing part, and the shaft head is provided at the end of the measuring part away from the roller pressing part. The shaft head is rotatably mounted on the first movable bearing seat. The rolling section, measuring section, and shaft head are all cylindrical structures, and the cross-sectional diameters of the rolling section and the measuring section are in the order that the rolling section is larger than the measuring section.

2. The roll gap measuring device according to claim 1, characterized in that: The laser extension direction of the first laser displacement sensor and the laser extension direction of the second laser displacement sensor are both parallel to the horizontal plane and perpendicular to the vertical plane.

3. The roll gap measuring device according to claim 1, characterized in that: A fixed bearing seat is also fixedly provided between the upper crossbeam and the lower crossbeam of the frame. A fixed roller is provided on the side of the second movable roller away from the first movable roller, and the two ends of the fixed roller are respectively installed on the fixed bearing seat.

4. The roll gap measuring device according to claim 3, characterized in that: A fixed mounting bracket perpendicular to the ground is provided on the side of the fixed bearing seat facing the second movable roller. A third laser displacement sensor and a fourth laser displacement sensor are arranged sequentially from top to bottom on the fixed mounting bracket. The laser beam of the third laser displacement sensor is directed toward the fixed roller, and the third laser displacement sensor is used to obtain a third distance between itself and the fixed roller. The laser beam of the fourth laser displacement sensor is directed toward the second movable roller, and the fourth laser displacement sensor is used to obtain a fourth distance between itself and the second movable roller.

5. The roll gap measuring device according to claim 4, characterized in that: The third laser displacement sensor and the fourth laser displacement sensor are electrically connected to the data processing terminal, which is used to calculate and determine the size of the second roller gap between the fixed roller and the second movable roller based on the third gap and the fourth gap.

6. The roll gap measuring device according to claim 3, characterized in that: The first movable roller, the second movable roller, and the fixed roller have the same structure.

7. A method for measuring roll gap, applied to the roll gap measuring device according to any one of claims 1-6, characterized in that, Includes the following steps: S1. The roll gap between the first movable roller and the second movable roller is calculated and calibrated to obtain the first calibration coefficient K1; S2. Obtain the first distance H1 between the first laser displacement sensor itself and the measuring part of the second movable roller, and obtain the second distance H2 between the second laser displacement sensor itself and the measuring part of the first movable roller. S3. The roll gap between the second movable roller and the fixed roller is calculated and calibrated to obtain the second calibration coefficient K2. The third distance H3 between the current third laser displacement sensor and the fixed roller is obtained, and the fourth distance H4 between the current fourth laser displacement sensor and the second movable roller is obtained. S4. Based on the first gap H1 and the second gap H2, the first gap △H1 between the first movable roller and the second movable roller is obtained, then △H1 = (H1 + H2 - K1) / 2; and based on the third gap and the fourth gap, the second gap △H2 between the second movable roller 2 and the fixed roller 3 is calculated and determined, then △H2 = H3 + H4 - K2.

8. The roll gap measurement method according to claim 7, characterized in that, The calibration of the roll gap calculation between the first movable roller and the second movable roller to obtain the first calibration coefficient K1 includes: Prepare a calibration feeler gauge with a predetermined thickness S, and place it between the first movable roller and the second movable roller so that the size of the roller gap on both sides between the first movable roller and the second movable roller is exactly the same as the predetermined thickness S of the calibration feeler gauge. If the current distance h1 between the first laser displacement sensor and the measuring part of the second movable roller is obtained, and the current distance h2 between the second laser displacement sensor and the measuring part of the first movable roller is obtained, then the first calibration coefficient K1 = h1 + h2 - 2S.

9. The roll gap measurement method according to claim 7, characterized in that, The calibration of the roll gap calculation between the second movable roll and the fixed roll to obtain the second calibration coefficient K2 includes: Prepare a calibration feeler gauge of a predetermined length S and place it between the second movable roller and the fixed roller so that the size of the roller gap on both sides between the second movable roller and the fixed roller is exactly the same as the predetermined thickness S of the calibration feeler gauge. If the current distance h3 between the third laser displacement sensor and the fixed roller is obtained, and the current distance h4 between the fourth laser displacement sensor and the measuring part of the second movable roller is obtained, then the second calibration coefficient K2 = h3 + h4 - S.

10. The roll gap measurement method according to claim 7, characterized in that, The roll gap measurement method further includes: Set the target roll gap between adjacent rolls and determine the type of adjacent rolls. If the adjacent rolls are a first movable roll and a second movable roll, adjust the first roll gap. If the adjacent rolls are a second movable roll and the fixed roll, adjust the second roll gap. The positions of the first movable roller and the second movable roller are adjusted synchronously to adjust the first roller gap between the first movable roller and the second movable roller so that the first roller gap reaches the target roller gap size; Adjust the position of the second movable roller to adjust the second roller gap between the second movable roller and the fixed roller, so that the second roller gap reaches the target roller gap size.

11. A method for measuring roll gap, applied to the roll gap measuring device according to any one of claims 1-6, characterized in that, Includes the following steps: S5. The roll gaps at both ends between the first movable roller and the second movable roller are calculated and calibrated to obtain a first calibration coefficient K1 and a third calibration coefficient K3. Based on the first calibration coefficient K1 and the third calibration coefficient K3, the first roll gap ΔH1 and the third roll gap ΔH3 at both ends between the first movable roller and the second movable roller are calculated respectively. The calculation methods of the third calibration coefficient K3 and the third roll gap ΔH3 are the same as those of the first calibration coefficient K1 and the first roll gap ΔH1. S6. The roll gaps at both ends between the second movable roller and the fixed roller are calculated and calibrated to obtain the second calibration coefficient K2 and the fourth calibration coefficient K4. Based on the first calibration coefficient K2 and the third calibration coefficient K4, the second roll gap ΔH2 and the fourth roll gap ΔH4 at both ends between the second movable roller and the fixed roller are calculated respectively. The calculation methods of the third calibration coefficient K4 and the fourth roll gap ΔH4 are the same as those of the first calibration coefficient K2 and the second roll gap ΔH2.

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