KR102452277B1 - Automatic rolling gap adjustment system of hot rolling stand using hydraulic source - Google Patents

Abstract

The present invention relates to a rolling gap automatic adjustment system of a hot-rolled stand unit using a hydraulic source. Here, a hot-rolled stand unit (100) can have the height of both end portions of an upper rolling roller being independently and precisely controlled by a hydraulic pressing-down module to simply correct a left-and-right pressing-down force eccentric load. Furthermore, the location value can be stored and outputted in digital data so as to improve a structure such that a rolling gap may be adjusted in real time, thereby enabling an unmanned automated rolling process. In particular, even when the rolling roller is abrased while the rolling production continues, the roll interval can be automatically compensated, thereby maintaining the uniform rolling precision throughout the entire area of a section steel. To this end, the present invention comprises: a lower rolling roller (110); an upper rolling roller (120); a column (130); a hydraulic pressing-down module (200); and a chuck cylinder (140).

Description

Automatic rolling gap adjustment system of hot rolling stand using hydraulic source}

The present invention relates to a system for automatically adjusting the rolling gap of a hot rolling stand using a hydraulic pressure source, and more specifically, the height of both ends of the upper rolling roller is independently precisely controlled by a hydraulic pressure lowering module, thereby simplifying correction of the left and right rolling force bias load In addition, as the position value is stored and output as digital data, the structure is improved so that the rolling gap is adjusted in real time to promote unmanned automation of the rolling process. It relates to an automatic rolling gap adjustment system for a hot rolling stand using a hydraulic pressure source that can maintain rolling precision uniformly over the entire length of a section steel.

In general, an angle is a subsidiary material whose overall shape is formed in a '∧' shape, and is widely used in various fields including construction, ships, and industrial facilities. It is then rolled into a '∧'-shaped cross section through a multi-stage firing process.

Looking at this conventionally disclosed method for manufacturing an 'a'-shaped steel, in Korean Patent Publication No. 10-2009-0069883, an 'a'-shaped steel having a flange of a long side and a short side is manufactured by a plurality of rolling mills, but the rolled material is manufactured with the long side and the long side. a first step of gradually rolling while increasing the rolling reduction and the reduction in area so that the flange of the short side is formed; a second step of flattening the flange by applying a light pressure to the flange end of the rolled material rolled in the first step to correct the squareness of the corner where the long side and the short side meet and the flatness of the flange; A third step of restraining the end of the rolled material corrected in the second step and finishing rolling; a technology including a bar has been previously presented.

However, the prior art aims to improve product quality through tight management of the inlet guide width of the last rolling mill. In particular, as the billet used to manufacture the section steel is standardized as a square semi-finished product, the manufacturing process is quite inefficient because it must be rolled using a billet of the same standard regardless of the size of the 'L' shaped steel. A problem followed.

On the other hand, the above problem is not limited to the 'a' shape, but is emerging as a problem to be solved in the section steel manufacturing process of various shapes including the 'H' shape, the rail, and the 'c' shape.

US 10-2009-0069883 A (2009.07.01.)

Accordingly, the present invention was conceived to solve the above problems, and the height of both ends of the upper rolling roller is independently and precisely controlled by the hydraulic pressure reduction module, so that the left and right pressure bias load is easily corrected and the position value is converted to digital data. The structure is improved so that the rolling gap is adjusted in real time while being stored and outputted to promote unmanned automation of the rolling process. It is an object of the present invention to provide a rolling gap automatic adjustment system of a hot rolling stand using a hydraulic pressure source that can be maintained in

In order to achieve this object, a feature of the present invention is that in the automatic rolling gap adjustment system of the hot rolling stand unit using a hydraulic pressure source, the hot rolling stand unit 100 is rotatably rotatable by a pair of lower chucks 112 . The lower rolling roller 110 supported, the upper rolling roller 120 disposed in parallel with the lower rolling roller 110 and rotatably supported by a pair of upper chucks 122 , and the upper chuck 122 ) A column 130 provided with a guide rail 132 for movably supporting the upper and lower chucks 122 and a pair of upper chucks 122 independently control the height between the upper and lower rolling rollers 110 and 120. It is installed between the hydraulic pressure reduction module 200 for adjusting the rolling gap, and the upper and lower chucks 112 and 122, and when the reduction force by the hydraulic pressure reduction module 200 is released, it protrudes to operate the upper and lower chucks ( It is characterized in that it includes a chuck cylinder 140 for supporting so as to be spaced apart between 112 and 122 .

In addition, the hydraulic pressure reduction module 200 is meshed with a pair of hydraulic motors 210, a worm gear 220 driven by the hydraulic motor 210, and the worm gear 220, the worm gear 220 rotating shaft and A worm wheel 230 that transmits a rotational force in an orthogonal direction, is connected to the worm wheel 230, is screwed to the column 130, and a pressing screw 242 is formed so as to be pitch-transferred in the longitudinal direction during rotational movement. 240), a connector 250 connecting the lower end of the lower shaft 242 and the upper chuck 122, and a non-contact sensor module 260 for detecting the pitch transfer distance of the lower shaft 242 by the rotational movement of the worm wheel 230 ), a display unit 270 for displaying information on the pitch travel distance of the reduction shaft 240 detected by the non-contact sensor module 260, and a hydraulic motor 210 based on the measurement value of the non-contact sensor module 260 It characterized in that it comprises a reduction correction module 280 for controlling the upper chuck 122 to adjust the height.

In addition, the non-contact sensor module 260 is provided with a center hole 261 formed in the axial direction in the upper center of the lower shaft 240 and the center hole 261 inlet, and a through hole 262a is formed in the center. The magnetic force ring 262 and the lower shaft 240 are spaced apart from the upper part, and one end of the magnetic force ring 262 is inserted into the center hole 261 via the through hole 262a, the lower shaft 240 axis line. It characterized in that it includes a linear position detector 263 for detecting the position of the upper rolling roller 120 in a manner that detects the position of the magnetic force ring 262 according to the direction movement.

In addition, the hot rolling stand part 100 is a rolling roller module provided in any one or more of the section rigid forming part 10 , the center groove forming part 20 , the pressurizing split part 30 , and the shaping part 40 . It is provided to adjust the gap, and the section steel forming part 10 is formed by rolling a prismatic billet (S) heated in a heating furnace step by step to form an 'M' shaped steel (S1) having an 'M' shape in its longitudinal section. A first rolling roller module 11 is provided for forming, and the center groove forming part 20 is longitudinally centered at the center of the bottom surface of the 'M' shaped steel S1 that is transferred through the section steel forming part 10. The second rolling roller module 21 is provided to form the groove S2, and the pressurized divided part 30 is formed on the central part of the 'M'-shaped steel S1 transferred through the center groove forming part 20. , by pressing in the width direction from the bottom, the third rolling roller module 31 to form a pair of '^' shaped steel (S3) by dividing the 'M' shaped steel (S1) with the center groove (S2) as a boundary ) is provided, and the shaping part 40 is formed by rolling a pair of '^' shape steel (S3) discharged through the pressurized split part (30), so that both sides of the wing part of the '^' shape steel (S3) It is characterized in that the fourth rolling roller module 41 is provided to form the same size and shape.

At this time, the section steel forming part 10 is a first rolling process of forming the upper and lower arch grooves (S-1) and (S-2) on the upper and lower surfaces by first rolling the rectangular billet (S) in the longitudinal direction. (10A), a second rolling process (10B) of forming side arch grooves (S-3) on both sides by primary rolling in the transverse direction of the molding that has undergone the first rolling process (10A), and a second rolling process ( The third rolling process (10C) of expanding the depth by secondary rolling the side arch grooves (S-3) of the molded article that has undergone 10B) in the transverse direction, and the upper and lower arches of the molded article that have undergone the third rolling process (10C) The fourth to expand the depth by secondary rolling the grooves (S-1) and (S-2) in the longitudinal direction, and to shape the lower arch groove (S-2) to an expanded size compared to the upper arch groove (S-1) The upper and lower arch grooves (S-1) and (S-2) of the molding that have undergone the rolling process (10D) and the fourth rolling process (10D) are rolled several times in stages, so that the upper arch groove (S-1) is V It is molded into a groove V1, and a V projection V2 corresponding to the V groove V1 is formed in the lower arch groove S-2. It is characterized in that it comprises a fifth rolling process (10E) of forming the molded product into an 'M'-shaped steel (S1).

In addition, the center groove forming part 20 is, by rolling down the V groove (V1) of the 'M' shaped steel (S1) so that the center of the bottom surface of the V projection (V2) coincides with the lower end of the side inclined surface (V3) on the horizontal line Forming, forming an arcuate center groove (S2) in the center of the bottom surface of the V protrusion (V2), and reducing the thickness of the central part of the 'M'-shaped steel (S1) by 75 to 90% compared to other areas by the arcuate center groove (S2) It is characterized in that the incision line (C) is formed.

In addition, the pressurized split part 30, the 'M' shaped steel (S1) by the third rolling roller module 31 of the expanded size compared to the V groove (V1) of the 'M' shaped steel (S1) and inclined motion ) is characterized in that it is provided so that the expansion force acts in the width direction in the central region.

In addition, cooling water is locally sprayed to the central region of the 'M'-shaped steel (S1) input to the pressurized dividing part 30, and the incision line (C) is locally cooled to 300 to 500 ° C. characterized in that do.

In addition, the shaping part 40 is provided to form a '^'-shaped section steel (S3) in which the left and right wing portions are symmetrical by injecting a pair of '^'-shaped sections S3 divided into two into an independent rolling space. characterized.

In addition, a moving measurement unit 300 for detecting the rolling dimension value of the 'M'-shaped steel S1 transferred through the center groove forming part 20 is provided in real time, and the moving measurement unit 300 measures It is provided to automatically correct the rolling gap by receiving the rolled dimension value from the rolling reduction correction module 280 in real time, calculating an error value by calculating it with a reference value, and adjusting the height of the upper chuck 122 by the error value do it with

In addition, the moving measuring unit 300 is rotatable on the upper scan arm 310 and the upper scan arm 310, which is provided so that a transfer force is applied in the direction of gravity by magnetic force on the first vertical rail 312. The upper sensing roller 320 grounded on the upper surface of the central part of the 'M' shaped steel (S1) that has passed through the center groove forming part 20 and the second vertical rail 332 on the upper scan arm 310 The lower scan arm 330 is installed so as to be movable in the longitudinal direction on the ride and is provided so that an upward transfer force is applied by the elastic body 334, and is rotatably installed on the lower scan arm 330, and the upper sensing roller The lower sensing roller 340 is grounded in the center groove S2 formed in the center of the lower surface of the 'M'-shaped steel S1 at a position opposite to the 320, and is installed in the upper scan arm 310, the lower scan arm By detecting the moving distance of 330, the distance between the upper and lower sensing rollers 320 and 340 is calculated to form an 'M' shaped steel (S1) in the center of the center groove (S2), the thickness of the cut line (C) Including a distance sensor 350 provided to detect, the rolling gap is automatically corrected while the height of the upper chuck 122 is adjusted by the reduction correction module 280, and the center groove S2 is formed. (C) It is characterized in that it is provided so as to have a thickness of 0.1 ~ 0.5mm.

According to the above configuration and action, in the present invention, the height of both ends of the upper rolling roller is independently and precisely controlled by the hydraulic pressure reducing module, thereby simply correcting the left and right pressure bias load and the position value is stored and output as digital data in real time. The structure is improved so that the rolling gap is adjusted, so that unmanned automation of the rolling process is promoted. In particular, even if the rolling roller wear occurs during rolling production, the roll gap is automatically compensated and the rolling precision can be maintained uniformly throughout the section steel. have.

1 is a configuration diagram showing the overall hot-rolling stand portion of the automatic rolling gap adjustment system of the hot-rolling stand portion using a hydraulic pressure source according to an embodiment of the present invention.
Figure 2 is an enlarged configuration diagram showing the hot rolling stand portion of the rolling gap automatic adjustment system of the hot rolling stand portion using a hydraulic pressure source according to an embodiment of the present invention.
3 is a block diagram showing a chuck cylinder of a rolling gap automatic adjustment system of a hot rolling stand unit using a hydraulic pressure source according to an embodiment of the present invention.
4 is a block diagram illustrating a non-contact sensor module of a rolling gap automatic adjustment system of a hot rolling stand unit using a hydraulic pressure source according to an embodiment of the present invention.
5 is a configuration diagram showing an operating state of the hot rolling stand unit of the automatic rolling gap adjustment system of the hot rolling stand unit using a hydraulic pressure source according to an embodiment of the present invention.
6 is a configuration diagram schematically showing a twin-section steel manufacturing step by an automatic rolling gap adjustment system of a hot rolling stand unit using a hydraulic pressure source according to an embodiment of the present invention.
7 is a configuration diagram showing step-by-step forming parts, center groove forming parts, pressurized split parts, and shaped parts of the rolling gap automatic adjustment system of the hot rolling stand unit using a hydraulic pressure source according to an embodiment of the present invention.
8 is an enlarged configuration diagram of a section forming part of a rolling gap automatic adjustment system of a hot rolling stand unit using a hydraulic pressure source according to an embodiment of the present invention.
9 is an enlarged configuration diagram showing a center groove forming part, a pressurizing split part, and a shaping part of the rolling gap automatic adjustment system of the hot rolling stand unit using a hydraulic pressure source according to an embodiment of the present invention.
10 is a configuration diagram illustrating a moving measurement unit of a rolling gap automatic adjustment system of a hot rolling stand unit using a hydraulic pressure source according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the present invention, when it is determined that the subject matter of the present invention may be unnecessarily obscured as it is obvious to those skilled in the art with respect to related known functions, the detailed description thereof will be omitted.

1 is a block diagram showing the overall configuration of a hot rolling stand unit of a rolling gap automatic adjustment system of a hot rolling stand unit using a hydraulic pressure source according to an embodiment of the present invention, and FIG. 2 is a hydraulic pressure source according to an embodiment of the present invention. It is an enlarged configuration diagram showing the hot rolling stand unit of the automatic rolling gap adjusting system of the hot rolling stand unit, and FIG. 3 is a chuck cylinder of the hot rolling stand unit automatic rolling gap adjusting system using a hydraulic pressure source according to an embodiment of the present invention. 4 is a configuration diagram showing a non-contact sensor module of a rolling gap automatic adjustment system of a hot rolling stand unit using a hydraulic pressure source according to an embodiment of the present invention, and FIG. 5 is a hydraulic pressure according to an embodiment of the present invention. It is a configuration diagram showing the operation state of the hot rolling stand unit of the automatic rolling gap adjustment system of the hot rolling stand unit using a circle, and FIG. 6 is a rolling gap automatic adjustment system of the hot rolling stand unit using a hydraulic source according to an embodiment of the present invention. It is a configuration diagram schematically showing the twin-section steel manufacturing step by , is a configuration diagram showing the shaping parts step by step, and FIG. 8 is an enlarged configuration diagram showing the shaping part of the rolling gap automatic adjustment system of the hot rolling stand unit using a hydraulic pressure source according to an embodiment of the present invention, FIG. It is an enlarged configuration diagram showing a center groove forming part, a pressurizing split part, and a shaping part of the rolling gap automatic adjustment system of the hot rolling stand part using a hydraulic pressure source according to an embodiment of the present invention, and FIG. 10 is an embodiment of the present invention It is a configuration diagram showing the moving measurement unit of the rolling gap automatic adjustment system of the hot rolling stand unit using a hydraulic source according to

The present invention relates to a system for automatically adjusting the rolling gap of a hot rolling stand using a hydraulic pressure source, wherein the hot rolling stand unit 100 has the height of both ends of the upper rolling roller independently and precisely controlled by a hydraulic pressure lowering module, so that the left and right rolling force bias load The structure is improved so that the rolling gap is adjusted in real time as the position value is stored and output as digital data along with simple correction of the rolling process to promote unmanned automation of the rolling process. A lower rolling roller 110, an upper rolling roller 120, a column 130, a chuck cylinder 140, and a hydraulic reduction module 200 are included so that the gap is automatically compensated and the rolling precision is uniformly maintained over the entire section of the section steel. to make it the main component.

The hot rolling stand unit 100 according to the present invention includes a lower rolling roller 110 rotatably supported by a pair of lower chucks 112 and a lower rolling roller 110 arranged in parallel with one A column 130 provided with an upper rolling roller 120 rotatably supported by a pair of upper chucks 122 and a guide rail 132 for movably supporting the upper chuck 122 in the vertical direction; A hydraulic pressure reduction module 200 for adjusting the rolling gap between the upper and lower rolling rollers 110 and 120 by independently controlling the height of the pair of upper chucks 122, and the upper and lower chucks 112 and 122 It is installed between the chuck cylinder 140, which is operated to protrude when the pressing force by the hydraulic pressure reducing module 200 is released to support the upper and lower chucks 112 and 122 to be spaced apart.

Here, the upper and lower rolling rollers 110 and 120 take into account the rolling shape of each part, and negative and embossed molding parts are formed on the outer peripheral surface to shape the shape.

In FIG. 4 , the hydraulic pressure reduction module 200 is meshed with a pair of hydraulic motors 210 , a worm gear 220 driven by the hydraulic motor 210 , and the worm gear 220 , the worm gear 220 . A worm wheel 230 that transmits a rotational force in a direction perpendicular to the rotation axis, and a pressing screw 242 connected to the worm wheel 230 and screwed to the column 130 so that the pitch is transferred in the longitudinal direction during rotational movement is formed. The shaft 240, the connector 250 connecting the lower end of the lower shaft 242 and the upper chuck 122, and the non-contact sensor module for detecting the pitch transfer distance of the lower shaft 242 by the rotational movement of the worm wheel 230 260, the display unit 270 for displaying information on the pitch travel distance of the reduction shaft 240 detected by the non-contact sensor module 260, and the hydraulic motor ( 210) to control the upper chuck 122 and includes a reduction correction module 280 for adjusting the height.

As such, the height of both ends of the upper rolling roller 120 is independently and precisely controlled by the hydraulic pressure reducing module 200 to simply correct the left and right side pressure bias load, and the position value is stored and output as digital data, so that the rolling gap in real time Since this is controlled, unmanned automation of the rolling process is promoted, and in particular, even if the rolling roller wear occurs while rolling production is continued, the rolling distance is automatically compensated and the rolling precision is maintained uniformly throughout the section steel.

Meanwhile, in current domestic hot rolling mills, it is impossible to precisely control the rolling gap adjustment, so in order to satisfy the KS standard, it is produced at a thickness more than necessary than the KS standard. As a result, high-wage skilled manipulators are required and more than necessary for productivity is being put in, but the present application precisely controls the rolling gap by the hydraulic pressure-reducing module 200 so that the precision error of thickness during product production is 0.2 ~ It can be maintained at 0.3 mm, and because of this, it is possible to reduce the cost and increase the number of people because it does not require more thickness.

In the enlarged view of FIG. 4 , the non-contact sensor module 260 has a center hole 261 formed in the axial direction in the upper center of the lower shaft 240, and is installed at the entrance of the center hole 261, and a through hole in the center The magnetic force ring 262 in which the 262a is formed, and the lower shaft 240 are spaced apart from each other, and one end of the magnetic force ring 262 is inserted into the center hole 261 via the through hole 262a, The shaft 240 includes a linear position detector 263 for detecting the position of the upper rolling roller 120 in a manner that detects the position of the magnetic force ring 262 according to the axial movement.

As such, since the position value of the reduction shaft 240 is detected in a non-contact manner by the non-contact sensor module 260 including the magnetic force ring 262 and the linear position detector 263, vibration shock, high temperature during the hot rolling process with a high load There is an advantage in that measurement defects and failures caused by external environments such as such are prevented.

In addition, the hot rolling stand part 100 is a rolling roller module provided in any one or more of the section rigid forming part 10 , the center groove forming part 20 , the pressurizing split part 30 , and the shaping part 40 . provided to adjust the gap.

In addition, the hot rolling stand part 100 is a rolling roller module provided in any one or more of the section rigid forming part 10 , the center groove forming part 20 , the pressurizing split part 30 , and the shaping part 40 . provided to adjust the gap.

The section steel forming part 10 is a first rolling roller module so that the prismatic billet (S) heated in a heating furnace is rolled step by step to form an 'M' shaped steel (S1) having an 'M' shape in longitudinal section. (11) is provided.

Here, the billet (S) is mainly used in dimensions of 150mm in width * 150mm in length * 4000mm in length.

In FIG. 8, the section rigid forming part 10 is a first for forming upper and lower arch grooves S-1 and S-2 on the upper and lower surfaces by first rolling the rectangular billet S in the longitudinal direction. A second rolling process (10B) of forming side arch grooves (S-3) on both sides by primary rolling in the transverse direction of the molding that has undergone the rolling process (10A) and the first rolling process (10A), and the second rolling The third rolling process (10C) of expanding the depth by secondary rolling the side arch groove (S-3) of the molded product that has undergone the process (10B) in the transverse direction, and the third rolling process (10C) Secondary rolling the lower arch groove (S-1) (S-2) in the longitudinal direction to expand the depth, and forming the lower arch groove (S-2) to an expanded size compared to the upper arch groove (S-1) The upper and lower arch grooves S-1 and S-2 of the molded product that have undergone the fourth rolling process 10D and the fourth rolling process 10D are rolled step by step several times to form an upper arch groove S-1 is formed into a V groove (V1), and a V protrusion (V2) corresponding to the V groove (V1) is formed in the lower arch groove (S-2), and the side inclined surface (V3) is formed so that the distance between both sides of the molded product is extended toward the lower part. ) and a fifth rolling process (10E) of forming the molded product into an 'M'-shaped steel (S1).

9, the center groove forming part 20 is a second to form a center groove (S2) in the longitudinal direction in the center of the bottom surface of the 'M' shaped steel (S1) transferred through the section steel forming part (10). A rolling roller module 21 is provided.

At this time, the center groove forming part 20 is rolled down the V groove (V1) of the 'M' shaped steel (S1) so that the center of the bottom surface of the V protrusion (V2) coincides with the lower end of the side inclined surface (V3) on the horizontal line. Forming, forming an arcuate center groove (S2) in the center of the bottom surface of the V protrusion (V2), and reducing the thickness of the central part of the 'M'-shaped steel (S1) by 75 to 90% compared to other areas by the arcuate center groove (S2) An incision line (C) is formed.

On the other hand, the incision line (C) is preferably formed to a thickness of 0.1 ~ 0.5mm so as to be effectively divided into two in the pressure division part 30 to be described later.

In addition, the pressurized divided part 30 according to the present invention presses the center portion of the 'M'-shaped steel (S1) transferred through the center groove forming part 20 in the width direction from the top and bottom, and the center groove (S2) ), a third rolling roller module 31 is provided to divide the 'M'-shaped steel (S1) into two to form a pair of '^'-shaped steel (S3).

The pressurized split part 30, the 'M'-shaped steel (S1) by the third rolling roller module 31 and the inclined motion of the expanded size compared to the V groove (V1) of the 'M'-shaped steel (S1) It is provided so that the expanding force acts in the width direction in the central region.

Then, the cooling water is locally sprayed to the central region of the 'M'-shaped steel (S1) injected into the pressurized split part (30). In this way, the incision line (C) is locally cooled to 300~500°C by the cooling water, so that burrs due to ductility are prevented while the 'M'-shaped steel (S1) is divided into two parts, and the third rolling roller module 31 is applied to the pressing force. Deformation of the '^'-shaped section steel S3 is prevented.

On the other hand, a pair of '^'-shaped steel sections S3 that have passed through the pressurized split part 30 are spaced apart at a predetermined interval and put into a shaping part 40 to be described later.

In addition, the shaping part 40 according to the present invention is formed by rolling a pair of '^' shape steel (S3) discharged through the pressurized split part (30), and the wing portions of both sides of the '^' shape steel (S3). A fourth rolling roller module 41 is provided to form the same size and shape.

The shaping part 40, as shown in FIG. 9 (l), a pair of '^'-shaped section steel (S3) divided into two is put into an independent rolling space to form a '^'-shaped section steel (S3) with symmetrical left and right wing parts. provided to form.

At this time, in consideration of the characteristic that a pair of '^'-shaped steel (S3) input to the regular part 40 is transported while being spaced apart at an inclination angle, the distance between the regular part 40 and the pressurized divided part 30 is different. It is preferable to spaced apart from the parts by an extended distance.

In this way, the section steel forming part 10, center groove forming part 20, pressurized split part 30, and regularized part 40 are arranged in stages and standardized (e.g., usually horizontal 150mm * vertical 150mm * length 4000mm) 1 As the structure is improved so that two '^' shaped steel sections (S3) can be produced simultaneously with four square billets (S), the rolling load for each part is reduced, extending the life of the rolling rollers, and maximizing productivity without expanding production facilities. there is an advantage

In addition, a moving measuring unit 300 for detecting the rolling dimension value of the 'M'-shaped steel S1 transferred through the center groove forming part 20 in real time is provided.

The rolling dimension value measured by the moving measuring unit 300 is received in real time from the rolling reduction correction module 280 and calculated with a reference value to calculate an error value, and the upper chuck 122 height is adjusted by the error value for rolling. It is provided to automatically correct the gap.

In this way, the dimensions of the product passing through each part are measured in a non-contact manner by the moving measuring unit 300, and the rolling gap is automatically corrected using the measured values, so that the overall dimensions are uniform in the longitudinal direction during the manufacture of long-sized sections. It can be molded to one quality.

In FIG. 10 , the moving measuring unit 300 includes an upper scan arm 310 provided so that a transfer force is applied in the weight direction by magnetic force on the first vertical rail 312 , and the upper scan arm 310 is mounted on the upper scan arm 310 . An upper sensing roller 320 that is rotatably installed and grounded on the upper surface of the central portion of the 'M'-shaped steel (S1) passing through the center groove forming part 20, and a second vertical rail 332 on the upper scan arm 310 ) is installed to be movable in the longitudinal direction, the lower scan arm 330 is provided so that an upward transfer force is applied by the elastic body 334, and is rotatably installed in the lower scan arm 330, the upper The lower sensing roller 340 is grounded in the center groove S2 formed in the center of the lower surface of the 'M'-shaped steel (S1) at a position opposite to the sensing roller 320, and is installed in the upper scan arm 310, the lower By detecting the moving distance of the scan arm 330, the distance between the upper and lower sensing rollers 320 and 340 is calculated to form an incision line (C) in the center of the 'M'-shaped steel S1 in which the center groove S2 is formed. ) includes a distance sensor 350 provided to detect the thickness.

As such, as the upper and lower sensing rollers 320 and 340 are provided to be movable in the vertical direction based on the upper scan arm 310, the position flexibly corresponds to the vertical flow of the product passing through each rolling part. It is provided to detect the rolling thickness while moving.

As an example, when the moving measuring unit 300 is applied to measure the thickness of the cut line C, the upper chuck 122 is performed by the reduction correction module 280 based on the detected value of the moving measuring unit 300 . As the height is adjusted, the rolling gap is automatically corrected, and at this time, the incision line (C) where the center groove (S2) is formed is provided to have a thickness of 0.1 to 0.5 mm, and then the 'M' shaped steel (S1) is effectively divided into two. There is an advantage in that the occurrence of burrs in the cutout is prevented and the deformation of the '^'-shaped section steel S3 is prevented.

As described above, in the detailed description of the present invention, the most preferred embodiment of the present invention has been described, but various modifications are possible within the scope not departing from the technical scope of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but the protection scope should be recognized from the techniques of the claims to be described later and equivalent technical means from these techniques.

100: hot rolling stand unit 110: lower rolling roller
120: upper rolling roller 130: column
140: chuck cylinder 200: hydraulic pressure down module
300: moving layer government

Claims (11)

In the automatic rolling gap adjustment system of the hot rolling stand unit 100 using a hydraulic pressure source,
The hot rolling stand unit 100 includes a lower rolling roller 110 that is rotatably supported by a pair of lower chucks 112, and is disposed in parallel with the lower rolling roller 110, and includes a pair of upper chucks ( A column 130 provided with an upper rolling roller 120 rotatably supported by 122 , a guide rail 132 movably supporting the upper chuck 122 in the vertical direction, and a pair of upper chucks (122) It is installed between the hydraulic pressure reducing module 200 that controls the rolling gap between the upper and lower rolling rollers 110 and 120 by independently controlling the height, and the upper and lower chucks 112 and 122, When the pressing force by the hydraulic pressure reduction module 200 is released, it protrudes and includes a chuck cylinder 140 supporting the upper and lower chucks 112 and 122 to be spaced apart,
The hydraulic pressure reduction module 200 is meshed with a pair of hydraulic motors 210, a worm gear 220 driven by the hydraulic motor 210, and the worm gear 220, the worm gear 220 orthogonal to the axis of rotation A worm wheel 230 that transmits a rotational force in the direction, connected to the worm wheel 230, and screwed to the column 130 to form a lowering screw 242 so as to be pitched in the longitudinal direction during rotational movement, the lowering shaft 240 is formed And, a connector 250 connecting the lower end of the lower shaft 242 and the upper chuck 122, and a non-contact sensor module 260 that detects the pitch transfer distance of the lower shaft 242 by the worm wheel 230 rotational movement, and , control the hydraulic motor 210 based on the display unit 270 and the non-contact sensor module 260 to display information on the pitch travel distance detected by the non-contact sensor module 260, the pressure-reduced shaft 240, based on the measurement value to include a reduction correction module 280 for adjusting the height of the upper chuck 122,
The non-contact sensor module 260 has a center hole 261 formed in the axial direction at the upper center of the lower shaft 240, is installed at the entrance of the center hole 261, and a through hole 262a is formed in the center of the magnetic force. The ring 262 and the lower shaft 240 are spaced apart from the upper part, and one end of the magnetic force ring 262 is inserted into the center hole 261 via the through hole 262a, and the lower shaft 240 moves in the axial direction. Automatic rolling gap adjustment system of the hot rolling stand using a hydraulic source, characterized in that it comprises a linear position detector 263 for detecting the position of the upper rolling roller 120 in a manner of detecting the position of the magnetic force ring 262 according to the
delete delete The method of claim 1,
The hot rolling stand part 100 is a rolling gap of a rolling roller module provided in any one or more of the section rigid forming part 10, the center groove forming part 20, the pressurizing split part 30, and the shaping part 40. provided to adjust
The section steel forming part 10 is a first rolling roller module so that the prismatic billet (S) heated in a heating furnace is rolled step by step to form an 'M' shaped steel (S1) having an 'M' shape in longitudinal section. (11) is provided,
The center groove forming part 20 is a second rolling roller module 21 so as to form a center groove S2 in the longitudinal direction in the center of the bottom surface of the 'M' shaped steel S1 transferred through the section steel forming part 10. ) is provided,
The pressurized divided part 30 is pressurized in the width direction from the upper and lower portions of the central portion of the 'M'-shaped steel S1 transferred through the center groove forming part 20 to the 'M' bordered by the center groove (S2). A third rolling roller module 31 is provided to divide the 'shaped steel (S1) into two to form a pair of '^' shaped steel (S3),
The shaping part 40 is made by rolling a pair of '^'-shaped steel (S3) discharged through the pressurized split part (30), so that the size and shape of both wing parts of the '^'-shaped steel (S3) are the same. Automatic rolling gap adjustment system of the hot rolling stand unit using a hydraulic pressure source, characterized in that the fourth rolling roller module 41 is provided so as to be formed in a smooth manner.
5. The method of claim 4,
The shape rigid forming part 10,
A first rolling process (10A) of forming the upper and lower arch grooves (S-1) and (S-2) on the upper and lower surfaces by primary rolling the rectangular billet (S) in the longitudinal direction;
A second rolling process (10B) of forming side arch grooves (S-3) on both sides by primary rolling in the transverse direction of the molded product that has undergone the first rolling process (10A);
A third rolling process (10C) of expanding the depth by secondary rolling the side arch groove (S-3) of the molding that has undergone the second rolling process (10B) in the transverse direction;
The upper and lower arch grooves (S-1) and (S-2) of the molding that have undergone the third rolling process (10C) are secondarily rolled in the longitudinal direction to expand the depth, and the lower arch compared to the upper arch groove (S-1) A fourth rolling process (10D) of forming the groove (S-2) to an expanded size;
The upper and lower arch grooves (S-1) and (S-2) of the molding that have undergone the fourth rolling process (10D) are rolled step by step several times to form the upper arch groove (S-1) into a V groove (V1), , V-groove (V1) and corresponding V-protrusion (V2) are formed in the lower arch groove (S-2), and side inclined surfaces (V3) are formed so that the gap is extended toward the bottom of both sides of the molding to make the molding 'M' A rolling gap automatic adjustment system of the hot rolling stand using a hydraulic pressure source, characterized in that it comprises a fifth rolling process (10E) of forming the shape steel (S1).
5. The method of claim 4,
The center groove forming part 20 is formed by rolling down the V groove (V1) of the 'M' shaped steel (S1) so that the center of the bottom surface of the V projection (V2) is aligned with the lower end of the side inclined surface (V3) on the horizontal line, , an arcuate center groove (S2) is formed in the center of the bottom surface of the V protrusion (V2), and the thickness of the central part of the 'M' shaped steel (S1) is reduced by 75 to 90% compared to other areas by the arcuate center groove (S2) A rolling gap automatic adjustment system of the hot rolling stand unit using a hydraulic pressure source, characterized in that the line (C) is formed.
5. The method of claim 4,
The pressurized split part 30, the 'M'-shaped steel (S1) by the third rolling roller module 31 and the inclined motion of the expanded size compared to the V groove (V1) of the 'M'-shaped steel (S1) Automatic rolling gap adjustment system of the hot rolling stand using a hydraulic source, characterized in that it is provided so that the expansion force acts in the width direction in the central region.
8. The method of claim 7,
Hydraulic water, characterized in that it is provided to locally cool the incision line (C) to 300 ~ 500 °C by locally spraying cooling water to the central region of the 'M' shaped steel (S1) injected into the pressurized dividing part (30) Automatic rolling gap adjustment system of the hot rolling stand using a circle. 5. The method of claim 4,
The shaping part 40 is provided so as to form a '^'-shaped section steel (S3) in which the left and right wing portions are symmetrical by inputting a pair of bi-divided '^'-shaped section steel (S3) into an independent rolling space. Automatic rolling gap adjustment system of the hot rolling stand using a hydraulic pressure source.
5. The method of claim 4,
A moving measurement unit 300 for detecting the rolling dimension value of the 'M'-shaped steel S1 transferred through the center groove forming part 20 is provided in real time,
The rolling dimension value measured by the moving measuring unit 300 is received in real time from the rolling reduction correction module 280 and calculated with a reference value to calculate an error value, and the upper chuck 122 height is adjusted by the error value for rolling. A rolling gap automatic adjustment system of the hot rolling stand unit using a hydraulic pressure source, characterized in that it is provided to automatically correct the gap.
11. The method of claim 10,
The moving measurement unit 300,
An upper scan arm 310 provided so that a transfer force is applied in the direction of gravity by magnetic force on the first vertical rail 312;
An upper sensing roller 320 that is rotatably installed on the upper scan arm 310 and is grounded on the upper surface of the central portion of the 'M'-shaped steel (S1) passing through the center groove forming part 20,
A lower scan arm 330 that is installed to be movable in the longitudinal direction on the second vertical rail 332 on the upper scan arm 310 and is provided so that an upward transport force is applied by the elastic body 334;
A lower sensing roller 340 that is rotatably installed on the lower scan arm 330 and is grounded in a center groove S2 formed in the center of the lower surface of the 'M'-shaped steel S1 at a position opposite to the upper sensing roller 320 . )Wow,
'M' installed in the upper scan arm 310 to detect the moving distance of the lower scan arm 330 and calculate the distance between the upper and lower sensing rollers 320 and 340 to form a center groove S2 Including a distance sensor 350 provided to detect the thickness of the incision line (C) in the central portion of the shape steel (S1),
The rolling gap is automatically corrected while the height of the upper chuck 122 is adjusted by the reduction correction module 280, so that the incision line C where the center groove S2 is formed has a thickness of 0.1 to 0.5 mm. Automatic rolling gap adjustment system of the hot rolling stand using a hydraulic source, characterized in that.

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