Quick and accurate straightening device for hot rolling laminar flow roller

Abstract

The utility model discloses a rapid and accurate straightening device for a hot rolling laminar flow roller, and relates to the technical field of roller shaft machining and repairing. The rapid and accurate straightening device for the hot rolling laminar flow roller comprises a rectangular straightening base, a plurality of screw holes are machined in the two sides of the straightening base, two clamping and conveying modules, a measuring module and a straightening module are arranged on the upper portion of the straightening base in the length direction, and the mutual positions and the distances among the clamping and conveying modules, the measuring module and the straightening module can be adjusted according to the bending condition of the laminar flow roller. According to the rapid and accurate straightening device for the hot rolling laminar flow roller, the bending degree of the laminar flow roller and the size change process in the straightening process are accurately measured through the measuring module, accurate control over the straightening process is achieved through a program preset by the single-chip microcomputer and a mathematical model, the parameter of overexertion can be corrected in time through the multiple straightening processes, and the straightening accuracy is improved. And the positions and the distances of the straightening module and the measuring module can be adjusted according to the bending condition and the bending position, so that the local bending can be accurately corrected.

Description

Technical Field

[0001] The utility model relates to the technical field of roller processing and repairing, in particular to a hot rolling laminar flow roller fast and accurate straightening device. Background Art

[0002] At present, the hot rolling of plates and strips is equipped with laminar cooling rollers, which are located between finishing and coiling to transport and cool the finished plates and strips. There are one or two hundred laminar rollers installed. Each roller consists of a hollow roller body and a support shaft connected to the roller body. The surface of the roller body is sprayed with a nickel-based alloy layer. Some roller bodies are filled with cooling water. The laminar rollers are subjected to the impact and wear of the hot slabs for a long time. Under the action of the cooling water spray, they often bend and deform and need to be replaced in time. Figure 1 The degree of curvature of the replaced rollers varies from 2 to 7 mm. Generally, those with a curvature less than 3 mm can be repaired by simple straightening to meet the requirements of the site. Most rollers with a curvature of 3 to 7 mm are idle and piled up because they are difficult to repair and straighten and cannot meet the requirements of dynamic balance. Over the years, there are often a lot of piles on site. Therefore, it is of great value to study an economical and practical laminar roller straightening device that is simple to operate, accurately controlled, and can be repaired repeatedly.

[0003] The "traction roller straightening machine" disclosed in Chinese patent CN220259154U describes a method of straightening the roller by means of an integral pressing block, but does not take into account the rebound deformation of the roller after straightening, and the straightening accuracy is not high;

[0004] The Chinese patent CN212526710U discloses a laminar roller straightening device, which describes a dimensional control of the straightening process, which is based on the original measured value. There is no feedback on the value after straightening, and multiple measurements and multiple settings of the straightening cylinder data are required. The straightening process is directly controlled by the cylinder, which is complicated to operate, inefficient, and not very accurate. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a hot rolling laminar flow roller fast and accurate straightening device, which solves the problems existing in the prior art.

[0007] (II) Technical solution

[0008] To achieve the above purpose, the utility model is implemented by the following technical solutions: a hot rolling laminar flow roller fast and accurate straightening device, comprising a rectangular straightening base, a plurality of screw holes are processed on both sides of the straightening base, two clamping modules, a measuring module, and a straightening module are arranged on the upper part of the length direction of the straightening base, and the mutual position and distance between them can be adjusted according to the bending condition of the laminar flow roller, and are respectively fixed to the screw holes on both sides of the straightening base by a plurality of bolts;

[0009] The straightening base is rectangular and longer than the laminar flow roller to be straightened. Multiple screw holes are processed on both sides according to the situation, and the clamping, measuring and straightening modules at different relative positions on the upper part are fixed by multiple connecting bolts. The entire base can be hoisted to the designated position together with the above modules through the lifting rings on both sides;

[0010] The clamping module has two parts, and their relative position and distance are adjusted according to the bending degree and position of the laminar flow roller. After adjustment, they are fixed to the straightening base by bolts on both sides. Its main function is to clamp and transport the laminar flow roller during the straightening process. The clamping module includes a clamping frame, the top of which is processed with a threaded through hole; a lower clamping roller assembly, including a V-shaped guide wheel assembly and a handle; an upper clamping roller assembly, including a V-shaped guide wheel assembly, a ball hinge, a screw rod, and a handle;

[0011] The relative position and distance of the measuring module are adjusted according to the bending degree and position of the laminar flow roller. Its main function is to measure the bending degree of the laminar flow roller and feed the result back to the straightening module. It includes a detection ring, four pressure sensors, four compression springs, four pressure blocks, and four ball bearings. Four guide rails are arranged in the detection ring. The two sides of the detection ring are fixed to the bolt holes of the straightening base by two bolts respectively;

[0012] The relative position and distance of the straightening module are adjusted according to the bending degree and position of the laminar flow roller. After adjustment, it is fixed to the straightening base by bolts on both sides. Its main function is to obtain the feedback results of the measurement module and straighten the laminar flow roller after calculation by the single-chip microcomputer. It includes a straightening frame, on which a straightening servo electric cylinder is fixed, which is fixed to the straightening frame by bolts. The piston rod of the electric cylinder is connected to the V-type guide wheel assembly through a ball hinge, and the limit gasket prevents the laminar flow roller from excessive bending.

[0013] (III) Beneficial effects

[0014] The utility model provides a device for fast and accurate straightening of hot rolling laminar flow rollers. It has the following beneficial effects:

[0015] The hot-rolled laminar roller fast and precise straightening device can accurately measure the bending degree of the laminar roller and the dimensional change process of the straightening process through the measuring module, and can realize precise control of the straightening process through the preset program and mathematical model of the single-chip microcomputer, and can timely correct the overcorrection parameters through multiple straightening processes. The position and distance of the straightening module and the measuring module can be adjusted according to the bending condition and position to realize precise correction of local bending. The laminar roller can be dynamically moved horizontally by the handle during the straightening process to realize fine adjustment of the straightening process and realize the precise straightening function. The servo electric cylinder converts the rotational motion of the servo motor into linear motion, and realizes the conversion of precise torque control into precise speed control, straightening pressure and position control. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the deformation of the laminar flow roller after long-term use;

[0017] Figure 2 It is a schematic diagram of the structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the clamping and conveying module of the utility model;

[0019] Figure 4 It is a schematic diagram of the measurement module of the utility model;

[0020] Figure 5 It is a schematic diagram of the straightening module of the utility model;

[0021] Figure 6 This is a schematic diagram of the control process of the utility model.

[0022] In the figure: 100, straightening base; 110, screw hole; 120, bolt; 130, lifting ring; 200, clamping module; 210, clamping frame; 211, threaded through hole; 220, lower clamping roller assembly; 221, V-type guide wheel assembly; 222, handle; 230, upper clamping roller assembly; 232, ball hinge; 233, screw rod; 300, measuring module; 310, detection ring; 311, guide rail; 320, pressure sensor; 330, compression spring; 340, pressure block; 350, ball; 400, straightening module; 410, straightening frame; 420, straightening servo electric cylinder; 430, limit gasket; 440, single-chip microcomputer; 500, laminar roller. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-6 The utility model provides a technical solution: a hot rolling laminar flow roller fast and accurate straightening device, comprising a rectangular straightening base 100, a plurality of screw holes 110 are processed on both sides of the straightening base, two clamping modules 200, a measuring module 300, and a straightening module 400 are arranged on the upper part of the length direction of the straightening base 100, and the mutual position and distance between them can be adjusted according to the bending condition of the laminar flow roller 500, and are respectively fixed to the screw holes 110 on both sides of the straightening base 100 by a plurality of bolts 120;

[0025] The straightening base 100 is rectangular and longer than the laminar flow roller 500 to be straightened. Multiple screw holes 110 are processed on both sides according to the situation, and the clamping, measuring and straightening modules at different relative positions on the upper part are fixed by multiple connecting bolts 120. The entire base can be hoisted to the designated position together with the above modules through the lifting rings 130 on both sides;

[0026] The pinching module 200 has two parts, and their relative positions and distances are adjusted according to the bending degree and position of the laminar flow roller 500. After adjustment, they are fixed to the straightening base 100 through bolts 120 on both sides. Its main function is to clamp and transport the laminar flow roller 500 during the straightening process. The pinching module 200 includes a pinching frame 210, the top of which is processed with a threaded through hole 211; a lower pinching roller assembly 220, including a V-shaped guide wheel assembly 221 and a handle 222; an upper pinching roller assembly 230, including a V-shaped guide wheel assembly 221, a ball hinge 232, a screw rod 233, and a handle 222;

[0027] The relative position and distance of the measuring module 300 are adjusted according to the bending degree and position of the laminar flow roller 500. Its main function is to measure the bending degree of the laminar flow roller 500 and feed back the result to the straightening module 400. It includes a detection ring 310, four pressure sensors 320, four compression springs 330, four pressure blocks 340, and four balls 350. Four guide rails 311 are arranged in the detection ring 310. The two sides of the detection ring 310 are fixed to the bolt holes 110 of the straightening base 100 by two bolts 120 respectively;

[0028] The relative position and distance of the straightening module 400 are adjusted according to the bending degree and position of the laminar flow roller 500. After adjustment, it is fixed on the straightening base 100 by bolts 120 on both sides. Its main function is to obtain the feedback result of the measurement module 300 and straighten the laminar flow roller 500 after calculation by the single-chip microcomputer 440. It includes a straightening frame 410, on which a straightening servo electric cylinder 420 is fixed, which is fixed to the straightening frame 410 by bolts, and the electric cylinder piston rod is connected to the V-type guide wheel assembly 221 through a ball hinge 232, and the limit gasket 430 prevents the laminar flow roller 500 from excessive bending.

[0029] When working, the specific operations are as follows:

[0030] The laminar flow rollers 500 that need to be repaired are put on the machine tool for testing, and a batch of severely deformed rollers with a curvature greater than 7mm are eliminated. The direction of the curvature is marked with "↑" on the end surface of the roller;

[0031] According to the bending degree and position of the laminar flow roller 500, the distance and relative position of the two measuring modules 300 and the straightening module 400 on the straightening device are adjusted, and they are fixed to the bolt holes 110 of the straightening base 100 through the bolts 120 respectively;

[0032] The opening degree of the V-shaped wheel 221 of the upper pinch roller assembly 230 is maximized.

[0033] The hoisting laminar flow roller 500 passes through the detection ring 310 of the measuring module 300 and is placed on the V-shaped wheels 221 of the pinch roller assemblies 220 at both ends;

[0034] The laminar flow roller 500 squeezes the pressing block 340, so that the pressing block 340 compresses the spring 330 and moves downward along the guide rail 311. The ball 350 prevents the pressing block 340 from being worn during squeezing. The bending parameters of the laminar flow roller 500 detected by the pressure sensor 320 are displayed through the single chip computer 440. The laminar flow roller 500 is adjusted so that the "↑" is upward, that is, the roller is arched, and the deviation value of the left and right sensors is minimized as much as possible, and the upper and lower sensors display the maximum deviation.

[0035] The handle 222 on the upper portion of the pinch module 200 is rotated so that the V-shaped wheels 221 at both ends clamp the laminar flow roller 500 .

[0036] Start the servo electric cylinder 420 on the upper part of the straightening module 400, and use the single-chip microcomputer 440 to calculate and output the parameters that need to be pressed down by the servo electric cylinder 420 for straightening according to the bending parameters measured by the measuring module 300, control the stroke of the servo electric cylinder 420, and use the V-shaped guide wheel assembly 221 at the end of the servo electric cylinder 420 to act on the arched laminar roller 500 to perform correction operations.

[0037] At the same time, by rotating the upper handle 222 of the lower pinch roller assembly 220, the steel laminar flow roller 500 is moved horizontally to the left and right, and the operation is repeated repeatedly until the upper and lower sensors show that the maximum deviation is the smallest, and the straightening operation of the laminar flow roller 500 is completed.

[0038] The whole control process is as follows Figure 6 Shown

[0039] In summary, the hot-rolled laminar roller fast and precise straightening device can accurately measure the bending degree of the laminar roller and the dimensional change process of the straightening process through the measuring module, and can realize precise control of the straightening process through the preset program and mathematical model of the single-chip microcomputer. Through multiple straightening processes, the overcorrection parameters can be corrected in time. The position and distance of the straightening module and the measuring module can be adjusted according to the bending condition and position to realize precise correction of local bending. The handle can dynamically move the laminar roller horizontally during the straightening process to achieve fine-tuning of the straightening process and realize precise straightening function. The servo electric cylinder converts the rotational motion of the servo motor into linear motion, and realizes the conversion of precise torque control into precise speed control, straightening pressure and position control.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for rapid and accurate straightening of hot rolling laminar rollers, characterized in that: The invention comprises a rectangular straightening base (100) and a module, wherein a plurality of screw holes (110) are processed on both sides of the straightening base, and two clamping modules (200), a measuring module (300), and a straightening module (400) are arranged on the upper part of the straightening base (100) in the longitudinal direction, wherein the relative positions and distances between the modules can be adjusted according to the bending condition of the laminar flow roller (500), and the modules are fixed to the screw holes (110) on both sides of the straightening base (100) by means of a plurality of bolts (120); The straightening base (100) is rectangular and has a length greater than the laminar flow roller (500) to be straightened. Multiple screw holes (110) are processed on both sides according to the situation. The clamping, measuring and straightening modules at different relative positions on the upper part are fixed by multiple connecting bolts (120). The entire base can be hoisted to a designated position together with the modules through the hoisting rings (130) on both sides. The clamping module (200) has two parts, and their relative positions and distances are adjusted according to the bending degree and position of the laminar flow roller (500). After adjustment, they are fixed to the straightening base (100) by bolts (120) on both sides. The main function of the clamping module (200) is to clamp and transport the laminar flow roller (500) during the straightening process. The clamping module (200) includes a clamping frame (210), the top of which is processed with a threaded through hole (211); a lower clamping roller assembly (220), including a V-shaped guide wheel assembly (221) and a handle (222); and an upper clamping roller assembly (230), including a V-shaped guide wheel assembly (221), a ball hinge (232), a screw rod (233), and a handle (222). The measuring module (300), whose relative position and distance are adjusted according to the bending degree and position of the laminar flow roller (500), mainly functions to measure the bending degree of the laminar flow roller (500) and feed back the result to the straightening module (400), comprises a detection ring (310), four pressure sensors (320), four compression springs (330), four pressure blocks (340), and four balls (350), wherein four guide rails (311) are arranged in the detection ring (310), and two sides of the detection ring (310) are respectively fixed to the screw holes (110) of the straightening base (100) by two bolts (120); The relative position and distance of the straightening module (400) are adjusted according to the bending degree and position of the laminar flow roller (500). After adjustment, the straightening module (400) is fixed to the straightening base (100) by bolts (120) on both sides. The main function of the straightening module (400) is to obtain the feedback result of the measurement module (300) and to straighten the laminar flow roller (500) after calculation by a single-chip microcomputer (440). The straightening module (400) comprises a straightening frame (410) on which a straightening servo electric cylinder (420) is fixed and fixed to the straightening frame (410) by bolts. The piston rod of the electric cylinder is connected to the V-shaped guide wheel assembly (221) by a ball hinge (232). The limit gasket (430) prevents the laminar flow roller (500) from excessive bending.

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