KR100326682B1 - Apparatus for automatically measuring distance between edger rolls in hot rolling facility - Google Patents

Apparatus for automatically measuring distance between edger rolls in hot rolling facility Download PDF

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KR100326682B1
KR100326682B1 KR1019970075292A KR19970075292A KR100326682B1 KR 100326682 B1 KR100326682 B1 KR 100326682B1 KR 1019970075292 A KR1019970075292 A KR 1019970075292A KR 19970075292 A KR19970075292 A KR 19970075292A KR 100326682 B1 KR100326682 B1 KR 100326682B1
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South Korea
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measuring
edger rolls
edger
measuring head
distance
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KR1019970075292A
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Korean (ko)
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KR19990055359A (en
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문영훈
김필호
이준정
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재단법인 포항산업과학연구원
포항종합제철 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/224—Edge rolling of flat products

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

PURPOSE: An apparatus for automatically measuring distance between edger rolls in a hot rolling facility is provided, wherein the apparatus is equipped with a means capable of completely preventing collision between measuring head and edger rolls. CONSTITUTION: In an apparatus for automatically measuring distance between edger rolls comprising a measuring head for measuring a distance between rough rolling edger rolls(3) of a hot rolling facility, a telescopic transfer implement for ascending the measuring head to a measuring position or descending the measuring head to a non-measuring position, and an operating room for controlling the apparatus by receiving measuring signals from the measuring head, the apparatus comprises high frequency proximity sensors(15) which are installed at positions adjacent to the rear end part of a driving screw(13) of the edger rolls to sense distance between the edger rolls by detecting a moving position of the rear end part of the driving screw(13); and a signal processing unit(16) for transmitting the calculated distance between the edger rolls to the operating room by calculating a distance between the edger rolls after receiving signals for the moving position of the rear end part of the driving screw(13) from the high frequency proximity sensors(15).

Description

열간압연설비의 엣저롤간격 자동측정장치Automatic measuring device of edge roll spacing of hot rolling equipment

본 발명은 열간압연설비에 있어서 조압연 엣저롤간의 간격을 자동측정하기 위한 장치의 개선에 관한 것으로, 특히 측정헤드와 엣저롤간의 충돌을 완전 방지할 수 있는 수단을 구비하는 열간압연설비의 엣저롤 간격 자동측정장치에 관한 것이다.The present invention relates to an improvement of an apparatus for automatically measuring the distance between roughly rolled edger rolls in a hot rolling facility, and more particularly, to an edger roll of a hot rolling facility having means capable of completely preventing a collision between the measuring head and the edger roll. It relates to an automatic distance measuring device.

엣저롤(Edger Roll)간격 자동측정장치는 열간압연설비의 조압연(Roughing Mill)공정에서 엣저롤간의 간격을 자동으로 측정해 주는 장치로서, 엣저롤간의 간격을 수동측정하는 것에 비해 측정정도가 우수하고 측정작업의 작업부하 경감은 물론 간편하고 신속하게 엣저롤 간격을 측정해줄 수 있는 장치이며, 이는 조압연 폭치수 정밀도 향상에 필수적으로 요구되는 장치이다.Edge roll gap automatic measuring device is a device that automatically measures the gap between edger rolls in the roughing mill process of hot rolling equipment, and has better measurement accuracy than manual measurement between edger rolls. It is a device that can measure edge roll gap easily and quickly as well as reduce the workload of measuring work, which is essential for improving the accuracy of rough rolling width.

조압연이란 도 1과 같은 열간압연공정에 있어서 열간압연 가열로 (Reheating Furnace)(1)에서 1000-1100℃로 가열되어 나온 강괴(slab)를 마무리 압연대(2)에서의 마무리압연(Finishing Mill)을 위해 1차 압연하는 단계를 말한다. 이러한 조압연 공정에서 사용되는 엣저롤(3)은 도 2의 예와 같이 압연롤(4)에 의한 압연재(5)의 두께압연과 함께 압연재(5)에 대한폭압연을 수행하는 롤로서, 압연재(5)의 목표 폭에 맞는 엣저롤(3) 간격의 유지가 최종제품의 폭치수 정밀도에 직결되게 된다. 따라서, 본 발명이 관련된 엣저롤간격 자동측정장치는 상기 엣저롤(3)간의 간격치수를 정밀하게 자동측정해줌으로써 열간압연 폭치수 정밀도를 보장해주게 되어 열연코일의 치수품질에 기여한다.Rough rolling is a finishing mill in the rolling mill 2 that finishes the slab heated to 1000-1100 ° C. in a hot rolling furnace 1 in a hot rolling process as shown in FIG. 1. Refers to the step of primary rolling. The edger roll 3 used in this rough rolling process is a roll which performs width rolling with respect to the rolling material 5 with the thickness rolling of the rolling material 5 by the rolling roll 4 like the example of FIG. The holding of the edger roll 3 intervals corresponding to the target width of the rolled material 5 is directly linked to the width dimension precision of the final product. Therefore, the edger roll spacing automatic measuring device according to the present invention ensures the hot rolling width dimension precision by precisely measuring the gap dimension between the edger rolls 3 and contributes to the dimensional quality of the hot rolled coil.

본 발명과 관련된 엣저롤 간격 측정장치는 도 3에 보인 바와 같이 비측정시에는 엣저롤(3) 하부의 여유공간에 수축상태로 안착되어 있다가 측정시에 장치 중간에 있는 유압피스톤이 상승하면서 측정헤드(6)를 측정위치에 도달시키도록 만드는 텔레스코픽방식의 이송기구(7)를 구비하고 있다. 이러한 장치를 사용할 경우 측정기의 이송기구(7)가 매우 적은 공간만을 차지하게 됨으로써 작업공간의 제약이 완화되고 제작원가가 절감되는 효과가 얻어진다. 종래에 이 장치는 도 4 와 같이 측정헤드(6)가 비측정위치의 대기상태에서 측정위치로 상승하기 전에 상기 측정헤드(6)가 엣저롤(3)과 충돌하는 것을 피할 수 있도록 하기 위해 측정헤드(6)의 상승이 가능한 최소 엣저롤갭(G1)을 인지해 주는 공압식 센서(8)와, 측정헤드(6)가 상승한 후 도 5 에 보인 바와 같이 측정도중 임계간격 이내로 엣저롤(3)이 좁혀지게 되면 측정헤드(6)부가 파손될 수 있으므로 이를 방지하기 위한 최소 근접가능 엣저롤 갭(G2)을 인지해 주는 공압식 센서(9)를 구비하고 있다. 그러나, 이러한 선행의 장치는 상기 센서(8)(9)들이 엣저롤(3)과 인접한 900-1000℃ 내외의 고온분위기온도와 냉각수의 비산, 미세철분의 침적등이 일어나는 곳에 설치되어 있고, 이로 인해 상기 공압센서(8)(9)들의 작동성능이 조기에 저하되어 오동작을 일으키거나 측정헤드(6) 상승시 및 측정시 측정헤드(6)와 엣저롤(3)간의 충돌이 빈번히 발생하는 문제점이 있었다.The edger roll gap measuring apparatus according to the present invention is seated in a contracted state in the free space under the edger roll 3 during non-measurement, as shown in FIG. 3, while the hydraulic piston in the middle of the device rises during the measurement. The telescopic feed mechanism 7 which makes the head 6 reach a measurement position is provided. When such a device is used, the transfer mechanism 7 of the measuring device occupies only a very small space, thereby reducing the limitation of the working space and reducing the manufacturing cost. In the prior art, the apparatus measures in order to avoid collision of the measuring head 6 with the edger roll 3 before the measuring head 6 rises from the standby state of the non-measuring position to the measuring position as shown in FIG. As shown in FIG. 5, the pneumatic sensor 8 recognizes the minimum edger roll gap G1 that can be raised of the head 6, and the edger roll 3 is moved within a critical interval during measurement as shown in FIG. 5. Since the measuring head 6 may be damaged when it is narrowed, it is provided with a pneumatic sensor 9 which recognizes the minimum possible edge roll gap G2 to prevent this. However, such a prior art device is installed where the sensors 8 and 9 are located near the edge roll 3 at a high temperature ambient temperature of about 900-1000 ° C, scattering of cooling water, deposition of fine iron, and the like. Due to the early operation performance of the pneumatic sensors (8) (9) is degraded prematurely causing a malfunction or frequent collision between the measuring head (6) and edger roll (3) when the measuring head (6) is raised and measured There was this.

따라서, 본 발명은 수동작업에 의한 엣저롤 간격측정의 비효율성과 부정확도를 개선시키기 위해 측정헤드(6)가 엣저롤 간격 측정이 필요하지 않은 조압연 작업중에는 고온과 수증기, 분진으로부터 안전하게 보호될 수 있는 비측정위치에서 대기하고 있다가 조압연 완료후 엣저롤 간격 측정지시가 내려지면 텔레스코픽 실린더 방식의 이송기구(7)를 통해 측정위치로 상승하여 롤 간격을 측정하고 그 결과를 조압연 운전실에 전달해주도록 된 엣저롤 간격 자동측정장치로서, 상기 측정헤드(6)와 엣저롤(3) 간의 충돌을 완벽히 방지해 줄 수 있는 수단을 구비한 더욱 개선된 엣저롤간격 자동측정장치를 제공하는 데에 그 목적이 있다.Therefore, the present invention can be safely protected from high temperature, water vapor and dust during the rough rolling operation in which the measuring head 6 does not require the edge roll gap measurement to improve the inefficiency and inaccuracy of the edge roll gap measurement by manual operation. After waiting in the non-measurement position, when the edge roll gap measurement instruction is issued after the completion of rough rolling, the telescopic cylinder-type feed mechanism (7) is raised to the measuring position and the roll gap is measured and the result is transmitted to the rough rolling cab. An edger roll gap automatic measuring device, which is adapted to provide an improved edge roll gap automatic measuring device having a means for completely preventing collision between the measuring head 6 and the edger roll 3. There is a purpose.

도 1 은 열간압연공정의 개요도,1 is a schematic diagram of a hot rolling process,

도 2 는 엣저롤의 한 설치사용상태 사시도,Figure 2 is a perspective view of one installation and use state of the edger roll,

도 3 은 본 발명이 관련된 엣저롤간격 자동측정장치의 구성개요도,3 is a schematic view of an edger roll interval automatic measuring apparatus according to the present invention;

도 4 는 측정헤드가 상승가능한 최소 엣저롤 갭을 보여주는 도식적인 정면도,4 is a schematic front view showing the minimum edge roll gap in which the measuring head can rise;

도 5 는 측정헤드가 엣저롤에 대해 근접가능한 최소 엣저롤 갭을 보여주는 도식적인 정면도,5 is a schematic front view showing the minimum edge roll gap in which the measuring head is close to the edge roll;

도 6 은 본 발명의 장치중 요부구성을 도식적인 방법으로 나타낸 정면도,6 is a front view showing the main portion of the device of the present invention in a schematic manner;

도 7 은 본 발명의 장치중 고주파 근접센서의 한 가능한 설치구성례를 보여주는 단면도.7 is a cross-sectional view showing one possible installation configuration of a high frequency proximity sensor in the device of the present invention.

*도면중 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

1 : 가열로 2 : 마무리압연대 3 : 엣저롤1: heating furnace 2: finish rolling table 3: edger roll

4 : 압연롤 5 : 압연재 6 : 측정헤드4 rolling roll 5 rolling material 6 measuring head

7 : 이송기구 8,9 : 공압센서 10:운전패널7 transfer mechanism 8,9 pneumatic sensor 10 operating panel

11 :주컴퓨터 12 : 제어기 13 : 구동스크루11: main computer 12: controller 13: drive screw

14 : 엣저롤지지프레임 15 : 고주파 근접센서14: edger roll support frame 15: high frequency proximity sensor

16 : 신호처리장치 17 : 구동스크루 커버16: signal processing device 17: drive screw cover

이하에서, 상기의 목적을 달성하기 위한 본 발명을 첨부도면을 참조하여 더욱 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, the present invention for achieving the above object will be described in more detail.

본 발명이 관련된 엣저롤 간격 자동측정장치는 도 3 의 예와 같이 측정헤드(6)와, 이 측정헤드(6)를 관련 조압연설비의 고온과 수증기, 분진으로부터 안전하게 차단될 수 있는 비측정위치 및 엣저롤(3) 사이의 측정위치 사이에서 이동작동시키는 텔레스코픽 이송기구(7)와, 상기 측정헤드(6)로부터의 측정신호를 운전패널(10)과 주 컴퓨터(11), 제어기(12)등이 구비된 운전실로 전송해주는 수단 등을 포함하여 구성된다. 상기 엣저롤(3)과 인접해 있는 공간은 고열, 고습기, 고진동 및 미세철분의 비산등으로 인해 이 공간에 상기 측정헤드(6)의 동작과 관련된 센서를 설치할 경우 그 센서의 성능이 쉽게 열화되는 문제가 있게 되며, 좁은 공간으로 유지보수에도 난점이 있게 된다.The edger roll spacing automatic measuring device according to the present invention has a measuring head 6 and a non-measurement position where the measuring head 6 can be safely disconnected from high temperature, water vapor and dust of the related rough rolling equipment as in the example of FIG. 3. And a telescopic feed mechanism (7) for moving the measuring position between the edger rolls (3), and measuring signals from the measuring heads (6) to the operating panel (10), the main computer (11), and the controller (12). And means for transmitting to the cab equipped with the back. The space adjacent to the edger roll 3 is easily degraded when a sensor related to the operation of the measuring head 6 is installed in this space due to high heat, high humidity, high vibration, and scattering of fine iron. There is also a problem, and the narrow space is also difficult to maintain.

본 발명에서는 이러한 문제의 해결을 위해 센서의 안정적 작동을 보장해 줄 수 있는 상온, 저습도의 양호한 환경하에서 센서가 설치작동될 수 있도록 하였다.In the present invention, the sensor can be installed and operated in a good environment of room temperature, low humidity to ensure a stable operation of the sensor to solve this problem.

이를 위해 본 발명은 도 6에서와 같이 엣저롤(3)의 간격조정을 실행하는 구동스크루(13)가 엣저롤지지 프레임(14)과 직접 연결되어 엣저롤(3)과 같은 거리로 움직이게 되는 점에 착안하여, 상기 구동스크루(13)의 끝단부의 위치를 감지하여 이를 통해 엣저롤(3)의 실제위치를 파악할 수 있도록 하는 수단을 설치하였다. 도시된 실시예에서, 상기 수단은 엣저롤 구동스크루(13)의 후단부의 이동위치를 검출하여 엣저롤(3) 간격을 감지하도록 설치된 고주파 근접센서(15)와, 상기 고주파 근접센서(15)로부터 상기 구동스크류(13) 후단부의 위치이동에 대한 신호를 받아 엣저롤(3) 간격으로 계산하여 상기 운전실로 전송하도록 설치된 신호처리장치(16)를 포함하는 구성으로 되어 있다.To this end, in the present invention, as shown in FIG. 6, the driving screw 13 for adjusting the gap of the edger roll 3 is directly connected to the edger roll supporting frame 14 to move at the same distance as the edger roll 3. Attention to the installation of the means to detect the position of the end of the drive screw 13 to determine the actual position of the edger roll (3) through this. In the illustrated embodiment, the means is a high frequency proximity sensor 15 installed to detect the position of the rear end of the edge roll drive screw 13 to detect the edge of the edge roll 3, and from the high frequency proximity sensor 15 It receives a signal for the position movement of the rear end of the drive screw 13, the signal processing device 16 is installed to calculate and transmit the edge roll (3) interval to the cab.

이러한 본 발명은 상기 구동스크류(13)의 끝단부가 조압연 엣저롤(3)이 설치되어 있는 열악한 환경에서 벗어난 위치에 존재하고 있어 이를 감지하는 근접센서(15)의 열화요인이 없다. 또한, 상기 구동스크루(13)가 금속성임을 감안하여 금속성 물체의 위치를 정확하게 감지해 주는 고주파 근접센서(15)를 도 7 과같이 각기 서로 다른 각도로 병렬 배치된 두 개의 고주파 근접센서(15)로 구성하여 구동스크루(13)의 커버(17)에 직접 부착설치함으로써 구동스크루(13)의 위치검출을 통한 엣저롤(3)간의 간격검출을 정확하게 이루어 낼 수 있도록 하였다.In the present invention, there is no deterioration factor of the proximity sensor 15 that detects the end of the driving screw 13 in a position outside the harsh environment in which the rough rolling edger roll 3 is installed. In addition, in consideration of the fact that the driving screw 13 is metallic, the high frequency proximity sensor 15 that accurately detects the position of the metallic object is two high frequency proximity sensors 15 arranged in parallel at different angles as shown in FIG. 7. It was configured to attach directly to the cover 17 of the drive screw 13 to accurately detect the gap between the edger roll (3) through the position detection of the drive screw (13).

바람직한 실시예에서, 상기 고주파근접센서(15)는 도 7의 예와 같이 한 위치에 2 개씩의 센서를 쌍으로 병렬배치함으로써 구동스크루(13)의 키홈(13')으로 인해 한 센서가 위치를 감지하지 못하는 경우에도 다른 각도의 센서가 위치를 감지할 수 있도록 함으로써 키홈(13')의 위치에 무관하게 항상 안정적인 위치검출이 가능하도록 하였으며, 상기와 같이 설치된 고주파 근접센서(15)로부터 구동스크류(13)의 위치이동에 대한 신호를 감지하여 상기 신호처리장치(16)로 전송하면 신호처리장치(16)는 엣저롤(3) 간격으로 다시 자동계산하여 엣저롤 간격 자동측정장치를 구성하는 운전실로 전송하여 엣저롤 간격을 조절하도록 하였다.In a preferred embodiment, the high-frequency proximity sensor 15 is arranged in parallel in a pair of two sensors in one position as shown in the example of Figure 7 due to the key groove 13 'of the drive screw 13 to position the sensor. Even if it does not detect, the sensor of different angles can detect the position so that it is possible to always detect a stable position irrespective of the position of the key groove 13 ', and the driving screw from the high frequency proximity sensor 15 installed as described above. When the signal for the position movement of 13) is sensed and transmitted to the signal processing device 16, the signal processing device 16 automatically calculates the edge roll 3 at intervals and automatically configures the edge roll gap measuring device. To adjust the edge of the edge roll.

이러한 본 발명의 엣저롤 간격 자동측정장치는 수동 측정시의 측정정밀도저하, 조업효율저하, 작업위험성 등이 완전히 배제된 재현성이 높고 정밀하며 빠르고 간편하게 엣저롤 사이의 간격을 자동으로 측정할 수 있는 측정장치로서, 기존의 장치가 고온, 고수분, 다량의 미세철분이 존재하는 열악한 분위기하에서 작동하도록 된 공압센서들의 오동작 및 조기열화로 인한 많은 문제점이 있었던 것을 효과있게 해소하여 항시 고장없는 정확한 엣저롤 측정이 가능하게 된 것은 물론 센서의 잦은 교체 및 유지보수의 부담을 저감할 수 있고, 또한 종전에 공압 센서의 사용을 위해 설치사용해야 했던 수분 및 이물제거장치와 동 장치를 통해 제거된 수분 및 이물의 배출처리장치등의 설치사용이 불필요하여 장치의 구성을 보다 효율적으로 할 수 있는 것 등의 효과를 제공한다.The automatic edger gap measurement apparatus of the present invention is a measurement that can automatically measure the gap between edger rolls with high reproducibility, precision, fast and simple, which completely eliminates measurement accuracy, operation efficiency, and work risk during manual measurement. As a device, it is possible to effectively solve the problems of the malfunction and premature deterioration of pneumatic sensors, which are designed to operate in a poor atmosphere where high temperature, high moisture and a large amount of fine iron are present. This makes it possible to reduce the burden of frequent replacement and maintenance of the sensor, and also to remove the water and foreign substances removed through the device, and the water and debris removal device that had previously been used for the use of pneumatic sensors. It is not necessary to install and use the processing device, etc., so that the configuration of the device can be made more efficient. Provide effect.

Claims (2)

열간압연설비의 조압연 엣저롤(3) 사이의 간격을 측정하기 위한 측정헤드(6)와, 상기 측정헤드(6)를 측정위치로 상승시키거나 비측정위치로 하강 작동시키는 텔레스코픽 이송기구(7)와, 상기 측정헤드(6)로부터 측정신호를 전달받아 장치를 제어하는 운전실을 포함하는 엣저롤 간격 자동측정장치에 있어서,Measuring head 6 for measuring the distance between the rough rolling edger roll 3 of the hot rolling equipment, and a telescopic feed mechanism for raising the measuring head 6 to the measuring position or lowered to the non-measuring position (7). In the edge roll gap automatic measuring device comprising a cab for controlling the device by receiving a measurement signal from the measuring head (6), 상기 엣저롤(3)의 구동스크루(13)의 후단부와 인접한 위치에 상기 구동스크루(13) 후단부의 이동위치를 검출하여 엣저롤(3) 간격을 감지하도록 설치된 고주파 근접센서(15)와, 상기 고주파 근접센서(15)로부터 상기 구동스크류(13) 후단부의 위치이동에 대한 신호를 받아 엣저롤(3) 간격으로 계산하여 상기 운전실로 전송하도록 설치된 신호처리장치(16)를 포함하여 구성되는 것을 특징으로 하는 열간압연설비의 엣저롤간격 자동측정장치.A high frequency proximity sensor 15 installed to detect an edge of the edger roll 3 by detecting a movement position of the rear end of the drive screw 13 at a position adjacent to the rear end of the drive screw 13 of the edger roll 3; It comprises a signal processing device 16 is installed to receive the signal for the position movement of the rear end of the drive screw 13 from the high-frequency proximity sensor 15 to calculate the edge roll (3) interval and transmit to the cab. Edger roll gap automatic measuring device for hot rolling equipment. 제 1 항에 있어서,The method of claim 1, 상기 각각의 고주파 근접센서(15)가 상기 구동스크루(13)에 대한 각 센서설치위치에 서로 다른 각도로 병렬 배치된 적어도 두 개의 고주파 근접센서(15)를 포함하여 구성되어 있는 것을 특징으로 하는 열간압연설비의 엣저롤간격 자동측정장치.Each of the high-frequency proximity sensor 15 is characterized in that it comprises at least two high-frequency proximity sensor 15 arranged in parallel at different angles at each sensor installation position with respect to the drive screw (13) Automatic measuring device for edge roll spacing of rolling equipment.
KR1019970075292A 1997-12-27 1997-12-27 Apparatus for automatically measuring distance between edger rolls in hot rolling facility KR100326682B1 (en)

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