Roller centering monitoring equipment
By designing a roll alignment monitoring device, which uses a magnetic reading head and magnetic strip to monitor the vertical displacement of the roll, the problem of insufficient roll alignment monitoring in the existing technology is solved, and efficient and accurate roll alignment adjustment is achieved, improving grinding accuracy and equipment safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-03-20
AI Technical Summary
Existing technologies cannot effectively monitor the alignment of the rolls, resulting in insufficient grinding accuracy or equipment damage, and low adjustment efficiency.
A roll alignment monitoring device was designed, including a fixing mechanism, a lifting mechanism, a monitoring device, and a protective mechanism. Through the cooperation of a magnetic reading head and a magnetic strip, the vertical displacement of the roll is monitored in real time, providing accurate displacement data feedback.
It improves the efficiency and accuracy of roll alignment adjustment, reduces measurement errors, avoids equipment damage, and enhances grinding precision and ease of operation.
Smart Images
Figure CN224011826U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of roll replacement technology, and in particular to a roll alignment monitoring device. Background Technology
[0002] Steel rolling requires periodic roll replacement. After the fatigue layer is removed and the rolls reach the required precision through grinding, they can continue rolling online. After being taken off the line, the rolls are ground by a roll grinding machine. Roll grinding requires a drive disc to rotate, and its rotation center needs to be as close as possible to the center of the drive disc to achieve the required grinding precision. The rotation center of the roll relies on the height of the bottom and side plates to ensure that the bottom plate reference is not uncertain. The reference block may be deformed by impact during the roll hoisting process, loosened by vibration, or have defects on the surface of the reference block, all of which will lead to the original reference error. The tilt error of the support shape and the non-perpendicularity of the measurement points taken by the operator may also produce large adjustment errors. Moreover, the operator not only has to measure, calculate, and adjust, but is also prone to errors. Furthermore, the support adjustment is generally carried out when there are no rolls. After the adjustment is completed and the roll is installed, the re-inspection can only check the horizontal center. It is impossible to determine whether the deviation of the horizontal center is caused by the deviation of the bottom or side plates. Sometimes, the adjustment of the tolerance needs to be repeated many times, which is very inefficient.
[0003] In the measurement function of CNC roll grinding machines, the measuring arm of the two-point measurement grinding machine only has two probes, front and rear. It can measure the diameter, roundness, and roll shape of the roll, but it cannot measure the roll centering. In other words, it cannot monitor the vertical position of the roll. Because the measuring arm cannot detect the height of the bottom bearing (i.e., the upper and lower center), and the adjustment of the bearing is inconvenient, the operator usually only adjusts the horizontal center based on the measuring arm. However, a large vertical error can damage the dial or even cause a drive spindle accident. Although the drive disc has a compensation function, grinding can still be performed when the vertical position deviation of the roll is not large, but it will affect the grinding accuracy. Such a serious deviation can even damage the equipment.
[0004] Therefore, it is necessary to propose a roll alignment monitoring device to solve or at least alleviate the above-mentioned defects. Utility Model Content
[0005] The main purpose of this invention is to provide a roll alignment monitoring device to solve the problem that the existing technology cannot monitor the roll alignment and such serious deviations will damage the equipment.
[0006] To achieve the above objectives, this utility model provides a roll alignment monitoring device, including a fixing mechanism, a lifting mechanism, a monitoring device, and a protective mechanism; wherein,
[0007] The fixing mechanism is used to fix it to the center bracket of the grinding machine;
[0008] The lifting mechanism comprises a lifting part and a connecting part, the lifting part is connected to the fixing mechanism and is vertically movable, the top end of the lifting part is used to contact the roll neck, the first end of the connecting part is connected to the lifting part, and the second end of the connecting part is spaced apart from the fixing mechanism;
[0009] The monitoring device is connected to the second end of the connecting part to monitor the up and down displacement of the roll.
[0010] The protection mechanism is connected to the side of the fixing mechanism, and the protection mechanism is provided with a groove for the second end of the connecting part to pass through to cover the second end of the connecting part.
[0011] Preferably, the fixing mechanism comprises a bottom plate, a mounting plate, a sleeve and a side plate, the bottom plate is used to be fixed to the center bracket of the grinding machine, the mounting plate is connected to the bottom plate, the sleeve is connected to the mounting plate, the lifting part is vertically movably connected to the sleeve, and the side plate is connected to one side of the mounting plate.
[0012] Preferably, the fixing mechanism further comprises at least one adjusting washer, and the adjusting washer is stacked between the bottom plate and the mounting plate.
[0013] Preferably, the lifting part comprises a compression spring and a lifting shaft head, the bottom end of the compression spring is connected to the mounting plate, the top end of the compression spring is connected to the lifting shaft head, and the lifting shaft head penetrates through the sleeve.
[0014] Preferably, the lifting part further comprises a bearing, a pin shaft, an adjusting washer and a clamping spring, the top of the lifting shaft head is recessed to form a mounting groove and is provided with a through hole penetrating in the transverse direction, the bearing is sleeved on the pin shaft, the bearing penetrates through the through hole via the pin shaft to be connected to the mounting groove, the adjusting washer is sleeved on the pin shaft and is arranged between the bearing and the side wall of the mounting groove, one end of the pin shaft is also recessed to form a clamping groove, and the clamping spring is sleeved in the clamping groove and abuts against the side wall of the top end of the lifting shaft head.
[0015] Preferably, the connecting part comprises a horizontal plate, a vertical plate and a right-angle connecting plate, the sleeve is provided with a first long hole extending in the vertical direction on both sides in the transverse direction, one end of the horizontal plate is connected to the lifting shaft head via a fastening bolt, the other end of the horizontal plate penetrates through and extends out of the first long hole, the top end of the vertical plate is connected to the other end of the horizontal plate, the bottom end of the vertical plate is outwardly protruded to form a protruding plate in the longitudinal direction, and the right-angle connecting plate is connected to the protruding plate.
[0016] Preferably, the monitoring device comprises a magnetic head, a magnetic strip mounting plate, a magnetic strip and a digital display meter, the magnetic head is connected to the right angle connecting plate, the magnetic strip mounting plate is connected to the side plate, the magnetic strip is mounted on the magnetic strip mounting plate, the magnetic head is spaced apart from the magnetic strip, and the magnetic head is connected to the digital display meter through a signal line.
[0017] Preferably, the spacing distance between the magnetic head and the magnetic strip is 1mm-1.5mm.
[0018] Preferably, the top of the vertical plate is provided with a second long hole extending in the vertical direction, and the side of the right angle connecting plate is provided with a third long hole extending in the longitudinal direction.
[0019] The top end of the vertical plate is connected to the other end of the horizontal plate through a bolt penetrating the second long hole to be adjustably arranged in the vertical direction, and the right angle connecting plate is connected to the convex plate through a bolt penetrating the third long hole to be adjustably arranged in the longitudinal direction.
[0020] Preferably, the protection mechanism comprises a protective cover connected to the side plate, and the protective cover is provided with the groove for the vertical plate to penetrate.
[0021] Compared with the prior art, the present application has the following advantages:
[0022] The present application provides a kind of roll centering monitoring equipment, including fixed mechanism, lifting mechanism, monitoring device and protection mechanism, fixed mechanism is used to be fixed on grinding machine center bracket, lifting mechanism includes lifting part and connecting part, lifting part is connected to fixed mechanism and is arranged to be vertically movable, the top end of lifting part is used to contact with roll neck, the first end of connecting part is connected in lifting part, the second end of connecting part is spaced apart between fixed mechanism, monitoring device is connected to the second end of connecting part, to monitor the up and down displacement of roll, protection mechanism is connected to the side of fixed mechanism, and protection mechanism is provided with the groove for the second end of connecting part to penetrate to cover the second end of connecting part. So after the top of lifting part is contacted with roll neck, when grinding machine side tile and bottom tile wear or other reasons make roll up and down position change, the entire lifting mechanism will be displaced linkage simultaneously, displacement is monitored and fed back to technical personnel by monitoring device, when exceeding range, timely adjustment can be carried out, simple operation, monitoring and actual wear linkage timely, greatly improve the adjustment efficiency, unlike measurement personnel can also discharge measurement error to improve the accuracy of adjustment. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in the drawings without any creative effort.
[0024] Figure 1 It is a cross-sectional schematic view of the overall structure in an embodiment of the present application.
[0025] Figure 2 It is a side schematic view of the overall structure in an embodiment of the present application.
[0026] Figure 3 It is a plane schematic view of the overall structure in an embodiment of the present application.
[0027] Figure 4 It is an application scene schematic view of the overall structure in an embodiment of the present application.
[0028] Figure 5 It is Figure 1 A local enlarged schematic view of the position A in the figure.
[0029] The purposes, functional features and advantages of the present application will be further illustrated in combination with embodiments and with reference to the drawings.
[0030] Explanation of the reference signs:
[0031] 10, fixing mechanism; 110, bottom plate; 120, mounting plate; 130, sleeve; 131, first long hole; 140, side plate; 150, adjusting gasket; 20, lifting mechanism; 210, lifting part; 211, compression spring; 212, lifting shaft head; 213, bearing; 214, pin shaft; 215, adjusting gasket; 216, clamping spring; 220, connecting part; 221, horizontal plate; 222, vertical plate; 2221, second long hole; 223, right-angle connecting plate; 2231, third long hole; 224, protruding plate; 30, monitoring device; 310, magnetic read head; 320, magnetic stripe mounting plate; 330, digital display meter; 40, protection mechanism; 410, protection cover; 420, asbestos pad; 50, grinding machine center bracket; 510, roller; 520, bottom tile; 530, side tile. DETAILED DESCRIPTION
[0032] It should be understood that the specific embodiments described herein are merely intended to explain the present application, and are not intended to limit the present application.
[0033] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.
[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.
[0035] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of the technical solutions appears contradictory or unachievable, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope required by the present application.
[0036] Please refer to the drawings Figures 1-5 The present application provides a kind of roll 510 centering monitoring equipment in one embodiment, including fixed mechanism 10, lifting mechanism 20, monitoring device 30 and protection mechanism 40. First, it needs to be explained that the transverse in the present application refers to the direction parallel to the axis of roll 510, longitudinal is the horizontal direction perpendicular to transverse, please refer to the mark in the drawing. Specific as follows:
[0037] The fixed mechanism 10 is used to be fixed on the center bracket 50 of grinding machine;The lifting mechanism 20 includes lifting part 210 and connecting part 220, the lifting part 210 is connected to the fixed mechanism and is movably arranged along the vertical direction, the top end of the lifting part 210 is used to contact with roll neck of roll 510, the first end of the connecting part 220 is connected to the lifting part 210, the second end of the connecting part 220 is spaced apart from the fixed mechanism 10;The monitoring device 30 is connected to the second end of the connecting part 220, for monitoring the up-down displacement of roll 510;The protection mechanism 40 is connected to the side surface of the fixed mechanism 10, and the protection mechanism 40 is provided with a groove for the second end of the connecting part 220 to penetrate to cover the second end of the connecting part 220.
[0038] Specifically, the roll 510 centering monitoring device in the application comprises a fixing mechanism 10, a lifting mechanism 20, a monitoring device 30 and a protection mechanism 40, the fixing mechanism 10 is used for mounting the whole device on the center bracket 50 of the grinding machine, and each component can be mounted and connected; the lifting mechanism 20 is used for linkage with the roll 510, the top end of the lifting mechanism 20 is in contact with the roll neck of the roll 510, and the lifting mechanism 20 is vertically movably arranged, so that when the roll 510 is vertically deviated due to wear, the lifting part 210 in the lifting mechanism 20 also produces vertical displacement, and the connecting part 220 is used for mounting the monitoring device 30, so that the displacement generated by lifting can be fed back to the technical personnel in real time through the monitoring device 30, so as to adjust and center in time; and the protection mechanism 40 is used for preventing sewage and oil from extending to damage the monitoring device 30.
[0039] In the preferred embodiment, the monitoring device 30 can adopt a magnetic read head 310, a magnetic strip mounting plate 320, a magnetic strip and a digital display meter 330, which is a magnetic grating instrument commonly used in the machine tool industry, and the working principle is magnetic-electric conversion. When the magnetic read head 310 moves relative to the magnetic strip, the magnetic read head 310 will sense the change of the magnetic field and convert the change into an electric signal. The displacement amount is calculated through a signal processing circuit and displayed on the digital display meter 330, which has high precision displacement measurement effect. The magnetic strip mounting plate 320 is used for mounting the magnetic strip, and the magnetic read head 310 is arranged at the second end of the connecting part 220. The magnetic read head 310 and the magnetic strip are arranged at intervals. The digital display meter 330 is reset to zero in the initial state. When the magnetic read head 310 moves vertically along with the connecting part 220 on the lifting part 210, the magnetic strip data read by the magnetic read head 310 will change, and the feedback data will be displayed on the digital display meter 330 in time. When the displacement data exceeds the specified range, the technical personnel need to adjust and center.
[0040] As a preferred embodiment of the utility model, the fixing mechanism 10 comprises a bottom plate 110, a mounting plate 120, a sleeve 130 and a side plate 140, the bottom plate 110 is used for fixing on the center bracket 50 of the grinding machine, the mounting plate 120 is connected on the bottom plate 110, the sleeve 130 is connected on the mounting plate 120, the lifting part 210 is movably connected in the sleeve 130 along the vertical direction, and the side plate 140 is connected on one side of the mounting plate 120.
[0041] It should be noted that the bottom plate 110 is used for installation with the grinding machine center bracket 50, the mounting plate 120 is used for installation of the sleeve 130 and the side plate 140, which is arranged on the bottom plate 110, the sleeve 130 is used for installation of the lifting part 210, and can play a vertical guide role for the movement of the lifting part 210; and the side plate 140 is used for installation of the protection mechanism 40, and can be installed with the magnetic stripe mounting plate 320.
[0042] As a preferred embodiment of the utility model, the fixing mechanism 10 further comprises at least one adjusting washer 150, which is stacked between the bottom plate 110 and the mounting plate 120.
[0043] It should be noted that the overall height of the upper equipment can be adjusted by adding the adjusting washer 150, so that the top of the lifting part 210 can be in contact with the neck of the shaft roller, and if necessary, multiple adjusting washers 150 can be added and stacked between the bottom plate 110 and the mounting plate 120, and the specific number can be selected by a person skilled in the art according to the actual situation.
[0044] As a preferred embodiment of the utility model, the lifting part 210 comprises a compression spring 211 and a lifting shaft head 212, the bottom end of the compression spring 211 is connected to the mounting plate 120, the top end of the compression spring 211 is connected to the lifting shaft head 212, and the lifting shaft head 212 is connected to the sleeve 130.
[0045] It is worth noting that the compression spring 211 is used to ensure the vertical movement of the lifting shaft head 212 and its height and reset, when the shaft roller wears and moves down, the compression spring 211 is compressed to drive the lifting shaft head 212 to move down, and when it does not contact the shaft roller, it can be reset to the original position.
[0046] As a preferred embodiment of the utility model, the lifting part 210 further comprises a bearing 213, a pin shaft 214, an adjusting washer 215 and a snap spring 216, the top of the lifting shaft head 212 is recessed to form a mounting groove and is provided with a through hole penetrating in the transverse direction, the bearing 213 is sleeved on the pin shaft 214, and the bearing 213 penetrates the through hole through the pin shaft 214 to be connected to the mounting groove, the adjusting washer 215 is sleeved on the pin shaft 214 and is arranged between the bearing 213 and the side wall of the mounting groove, one end of the pin shaft 214 is also recessed to form a clamping groove, and the snap spring 216 is sleeved in the clamping groove and abuts against the top side wall of the lifting shaft head 212.
[0047] It is worth noting that the bearing 213 is used to contact with the shaft roll neck to reduce the wear between the shaft roll, the mounting groove is formed at the top of the lifting shaft head 212 for the bearing 213 to be mounted, and the bearing 213 is rotatably mounted in the mounting groove by the pin shaft 214; the adjusting washer 215 is used for axial positioning of the bearing 213, which is arranged between the two sides of the bearing 213 and the inner side wall of the mounting side; the snap spring 216 plays a role in axially fixing the pin shaft 214.
[0048] Further, the connecting part 220 includes a horizontal plate 221, a vertical plate 222 and a right-angle connecting plate 223, the sleeve 130 is provided with a first long hole 131 extending in the vertical direction along the two sides in the horizontal direction, one end of the horizontal plate 221 is connected to the lifting shaft head 212 by a fastening bolt, the other end of the horizontal plate 221 penetrates and extends out of the first long hole 131, the top end of the vertical plate 222 is connected to the other end of the horizontal plate 221, the bottom end of the vertical plate 222 is outwardly protruded to form a protruding plate 224 in the longitudinal direction, and the right-angle connecting plate 223 is connected to the protruding plate 224.
[0049] It should be noted that the horizontal plate 221 is used to extend the entire connecting part 220 in the horizontal direction by a certain length, so that the magnetic read head 310 can be arranged at an interval from the magnetic stripe on the side plate 140, and the sleeve 130 is provided with a first long hole 131 extending in the vertical direction, so that the deflection of the lifting shaft head 212 can be limited, and the first long hole 131 can ensure that the vertical movement of the horizontal plate 221 is not stopped; the vertical plate 222 is used to extend the entire connecting part 220 downward to a position close to the magnetic stripe, so as to facilitate the magnetic read head 310 to align with the magnetic stripe, and the bottom end is further protruded to form a protruding plate 224 for the right-angle connecting plate 223 to be mounted; the right-angle connecting plate 223 is used for the magnetic read head 310 to be mounted and connected.
[0050] Further, the interval distance between the magnetic read head 310 and the magnetic stripe is 1mm-1.5mm.
[0051] It should be noted that this can ensure more accurate reading monitoring effect and ensure accurate displacement data feedback.
[0052] Further, the top of the vertical plate 222 is provided with a second long hole 2221 extending in the vertical direction, and the side surface of the right-angle connecting plate 223 is provided with a third long hole 2231 extending in the longitudinal direction; wherein,
[0053] The top end of the vertical plate 222 is connected to the other end of the horizontal plate 221 through the second long hole 2221 by a bolt to be vertically adjustable, and the right angle connecting plate 223 is connected to the convex plate 224 through the third long hole 2231 by a bolt to be longitudinally adjustable.
[0054] It should be noted that the second long hole 2221 extends vertically to adjust the vertical position of the vertical plate 222, and the third long hole 2231 extends longitudinally to adjust the longitudinal position of the right angle connecting plate 223, so that the position of the entire connecting part 220 can be adjusted up and down and front and back, so that the magnetic head 310 can be better aligned with the magnetic stripe.
[0055] Further, the protection mechanism 40 comprises a protection cover 410 connected to the side plate 140, and the protection cover 410 is provided with the groove for the vertical plate 222 to penetrate.
[0056] It can be understood that the protection cover 410 can be covered outside the monitoring device 30, and an asbestos pad 420 can also be arranged at the joint surface of the protection cover 410 and the side plate 140 to prevent sewage and oil from seeping in.
[0057] For the convenience of those skilled in the art, the operation process is briefly described as follows:
[0058] A standard roller 510 is installed on the grinding machine, and the four supporting tiles (the side tile 530 and the bottom tile 520) are adjusted by using the head and tail frame to measure and calibrate, and the side tile adjusting seat and the bottom tile adjusting seat are adjusted to make the roller 510 coincide with the rotation center of the grinding machine, and the error is controlled within 0.05mm; after the entire device of the application is installed, the thickness or number of the adjusting pad 150 is added or subtracted to make the bearing 213 contact the roller neck of the roller 510 by about 1mm, and the value is defined as the reference, and then the digital display table 330 is reset to zero; when the side tile 530 and the bottom tile 520 are worn or the position of the roller 510 is changed due to other reasons, the lifting mechanism 20 is linked to move downward through the compression spring 211, and the magnetic head 310 on the connecting part 220 also moves downward, and the displacement data is reflected on the digital display table 330; when the displacement data exceeds the specified range, the technician needs to adjust; the adjustment method can be to clamp the roller 510 by the front and rear measuring heads of the grinding machine measuring arm to adjust, which is simple and convenient.
[0059] The above is only the preferred embodiment of the application, and does not limit the patent range of the application, and any equivalent structure or equivalent process conversion according to the content of the application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the application.
Claims
1. A roll alignment monitoring device, characterized in that, It includes a fixed mechanism, a lifting mechanism, a monitoring device, and a protective mechanism; among which, The fixing mechanism is used to fix it to the center bracket of the grinding machine; The lifting mechanism includes a lifting part and a connecting part. The lifting part is connected to the fixed mechanism and is vertically movable up and down. The top end of the lifting part is used to contact the roll neck. The first end of the connecting part is connected to the lifting part, and the second end of the connecting part is spaced apart from the fixed mechanism. The monitoring device is connected to the second end of the connecting part to monitor the vertical displacement of the roll; The protective mechanism is connected to the side of the fixing mechanism, and the protective mechanism has a groove through which the second end of the connecting part passes to cover the second end of the connecting part.
2. The roll alignment monitoring device according to claim 1, characterized in that, The fixing mechanism includes a base plate, a mounting plate, a sleeve, and a side plate. The base plate is used to fix the machine to the center support. The mounting plate is connected to the base plate. The sleeve is connected to the mounting plate. The lifting part is vertically movable and connected to the sleeve. The side plate is connected to one side of the mounting plate.
3. The roll alignment monitoring device according to claim 2, characterized in that, The fixing mechanism further includes at least one adjusting shim, which is stacked between the base plate and the mounting plate.
4. The roll alignment monitoring device according to claim 2, characterized in that, The lifting part includes a compression spring and a lifting shaft head. The bottom end of the compression spring is connected to the mounting plate, and the top end of the compression spring is connected to the lifting shaft head. The lifting shaft head is connected through the sleeve.
5. The roll alignment monitoring device according to claim 4, characterized in that, The lifting unit also includes a bearing, a pin, an adjusting washer, and a retaining ring. The top of the lifting shaft head is recessed downward to form a mounting groove and has a through hole extending laterally. The bearing is sleeved on the pin and passes through the through hole to connect to the mounting groove. The adjusting washer is sleeved on the pin and is located between the bearing and the side wall of the mounting groove. One end of the pin is also recessed to form a retaining groove. The retaining ring is sleeved in the retaining groove and abuts against the top side wall of the lifting shaft head.
6. The roll alignment monitoring device according to claim 4, characterized in that, The connecting part includes a horizontal plate, a vertical plate, and a right-angle connecting plate. The sleeve has a first elongated hole extending vertically on both sides along the horizontal direction. One end of the horizontal plate is connected to the lifting shaft head by a fastening bolt. The other end of the horizontal plate passes through and extends out of the first elongated hole. The top end of the vertical plate is connected to the other end of the horizontal plate. The bottom end of the vertical plate protrudes outward along the longitudinal direction to form a convex plate. The right-angle connecting plate is connected to the convex plate.
7. The roll alignment monitoring device according to claim 6, characterized in that, The monitoring device includes a magnetic reading head, a magnetic strip mounting plate, a magnetic strip, and a digital display. The magnetic reading head is connected to the right-angle connecting plate, the magnetic strip mounting plate is connected to the side plate, the magnetic strip is mounted on the magnetic strip mounting plate, the magnetic reading head and the magnetic strip are spaced apart, and the magnetic reading head is connected to the digital display via a signal line.
8. The roll alignment monitoring device according to claim 7, characterized in that, The distance between the magnetic reading head and the magnetic strip is 1mm to 1.5mm.
9. The roll alignment monitoring device according to claim 8, characterized in that, The top of the vertical plate has a second elongated hole extending vertically, and the side of the right-angle connecting plate has a third elongated hole extending longitudinally; wherein, The top of the vertical plate is connected to the other end of the horizontal plate by a bolt passing through the second long hole, so as to be adjustable in the vertical direction. The right-angle connecting plate is connected to the convex plate by a bolt passing through the third long hole, so as to be adjustable in the longitudinal direction.
10. The roll alignment monitoring device according to claim 6, characterized in that, The protective mechanism includes a protective cover connected to the side plate, and the protective cover has a groove for the vertical plate to pass through.