KR970047886A - Steel plate length measuring method and device - Google Patents

Steel plate length measuring method and device Download PDF

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Publication number
KR970047886A
KR970047886A KR1019950068424A KR19950068424A KR970047886A KR 970047886 A KR970047886 A KR 970047886A KR 1019950068424 A KR1019950068424 A KR 1019950068424A KR 19950068424 A KR19950068424 A KR 19950068424A KR 970047886 A KR970047886 A KR 970047886A
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South Korea
Prior art keywords
steel sheet
length
contact roller
sensor
measurement
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KR1019950068424A
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Korean (ko)
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KR100217854B1 (en
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황병원
박연정
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김종진
포항종합제철 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/023—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring distance between sensor and object
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/12—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring diameters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

본 발명은 열간압연된 후강판이 제품으로 절단된 후 강판의 길이를 검사할 때 강판의 길이를 정확하게 측정하는 방법 및 그 장치에 관한 것으로 그 목적은, 강판의 변형과 접촉롤러의 마모 및 접촉롤러와 강판의 접촉시 발생하는 미끄럼등에 의하여 발생되는 측정오차를 가일층 감소시킬 뿐만 아니라, 접촉롤러의 온도상승 및 표면에 이물질의 흡착등에 의한 직경변화에 따른 측정오차를 제거토록 하는 강판의 길이측정방법 및 그 장치를 제공하는데 있다.The present invention relates to a method and apparatus for accurately measuring the length of a steel sheet when inspecting the length of the steel sheet after the hot-rolled thick steel sheet is cut into a product, the object of which is the deformation of the steel sheet and the wear of the contact roller and the contact roller The method of measuring the length of the steel sheet to not only reduce the measurement error caused by the slip, etc. generated when the steel sheet is brought into contact with the steel sheet, but also to remove the measurement error caused by the change in diameter due to the temperature rise of the contact roller and the adsorption of foreign matter on the surface. To provide the device.

상기와 같은 목적을 달성하기 위하여 본 발명은, 강판(1)과 접촉롤러(3)의 미끄럼에 의하여 발생하는 측정오차를 보정토록 판감지센서(S2)의 후방에 후면판 감지센서(P2,P3)를 설치하고, 측정후 마모에 의하여 발생하는 상기 접촉롤러(3)의 직경변화를 계산토록 판감지센서(S1)의 전방에 전면판 감지센서(P1)를 설치하며, 상기 접촉롤러(3)의 온도상승 및 이물질의 부착에 의한 측정오차를 방지토록 접촉롤러 지지대상에 에이젯트노즐(11a,11b)를 부착하고, 상기 접촉롤러(3)에 의하여 측정한 길이와 각 센서 사이의 거리를 이용하여 강판의 전체길이(L)를 각 센서 및 엔코더(4)와 접속 설치된 컴퓨터로서 계산하는 데에 그 요지가 있다.In order to achieve the above object, the present invention, the rear plate detection sensor (P2, P3) in the rear of the plate detection sensor (S2) to correct the measurement error caused by the sliding of the steel sheet 1 and the contact roller (3) ), The front plate detecting sensor (P1) is installed in front of the plate detecting sensor (S1) to calculate the diameter change of the contact roller (3) caused by wear after measurement, and the contact roller (3) The nozzle nozzles 11a and 11b are attached to the contact roller support object to prevent the measurement error caused by the temperature rise and the adhesion of foreign matter, and the length measured by the contact roller 3 and the distance between each sensor are used. In order to calculate the total length L of a steel plate as a computer connected with each sensor and the encoder 4, there is a summary.

Description

강판의 길이측정방법 및 그 장치Steel plate length measuring method and device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 종래의 강판의 길이측정장치를 도시한 개략측면도.1 is a schematic side view showing a length measuring device of a conventional steel sheet.

제2(a)도는 종래의 강판의 길이측정장치에 있어서 평탄한 강판의 길이측정상태를 도시한 개략도.FIG. 2 (a) is a schematic diagram showing a length measuring state of a flat steel sheet in a conventional steel sheet length measuring device.

제2(b)도는 종래의 강판의 길이측정장치에 있어서 변형된 강판의 길이측정상태를 도시한 개략도.FIG. 2 (b) is a schematic diagram showing the length measurement state of the steel sheet deformed in the conventional steel sheet length measuring device.

제3도는 본 발명에 따른 강판의 길이측정장치를 도시한 개략 측면도이다.3 is a schematic side view showing the length measuring device of the steel sheet according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 강판 2 : 이송롤1 steel sheet 2 feed roll

3 : 접촉롤러 4 : 엔코더3: contact roller 4: encoder

6 : 타이밍벨트 7 : 피스톤6: timing belt 7: piston

S1,S2,P1,P2,P3 : 판감지센서 11a,11b : 에어젯트 노즐S1, S2, P1, P2, P3: Plate detection sensor 11a, 11b: Air jet nozzle

Claims (6)

접촉롤러(3)와 다수의 판감지센서(S1)(S2)를 이용하여 강판(1)의 길이를 측정 하는 강판의 길이측정장치에 있어서, 강판(1)과 접촉롤러(3)의 미끄럼에 의하여 발생하는 측정오차를 보정토록 상기 판감지센서(S2)의 후방에 설치되는 후면판감지센서(P2,P3); 측정후 마모에 의하여 발생하는 상기 접촉롤러(3)의 직경변화를 계산토록 상기 판감지센서(S1)의 전방에 설치되는 전면판 감지센서(P1); 상기 접촉롤러(3)의 온도상승 및 이물질의 부착에 의한 측정오차를 방지하기위하여 접촉롤러 지지대상에 부착된 에어젯트노즐(11a,11b); 및 상기 접촉롤러(3)에 의하여 측정한 길이와 각 센서 사이의 거리를 이용하여 강판의 전체길이(L)를 하기식에 의해In the length measuring apparatus of the steel plate which measures the length of the steel plate 1 using the contact roller 3 and the several plate detection sensors S1 and S2, the sliding of the steel plate 1 and the contact roller 3 is carried out. Rear plate detection sensors (P2, P3) installed at the rear of the plate detection sensor (S2) to correct the measurement error generated by the; A front plate detection sensor (P1) installed in front of the plate detection sensor (S1) to calculate a diameter change of the contact roller (3) generated by wear after measurement; Air jet nozzles (11a, 11b) attached to the contact roller support object to prevent the measurement error due to the temperature rise of the contact roller (3) and the adhesion of foreign matter; And the total length L of the steel sheet using the length measured by the contact roller 3 and the distance between each sensor by the following equation. L = π * D * N + L1 + L2 + L3L = π * D * N + L1 + L2 + L3 계산토록 상기 각 센서 및 엔코더(4)와 접속 설치된 컴퓨터를 포함하여 구성 되는 것을 특징으로 하는 강판의 길이측정장치.Length measuring device of the steel sheet, characterized in that it comprises a computer connected to each sensor and encoder (4) to be calculated. 접촉롤러의 전면에 두개의 판감지센서를 설치하고 후면에 세개의 판감지센서를 설치하여 강판의 길이를 측정하는 강판의 길이측정방법에 있어서, 강판의 선단부가 S1센서를 통과하는 시점에서 접촉롤러가 하강되어 강판에 접촉하는 단계; 강판의 선단부가 S2센서와 P2센서 사이를 주행하는 동안 접촉롤러의 원주속도가 강판의 속도와 같게 되는 단계; 강판의 선단부가 P2센서를 통과하면서 측정이 개시되고 P3센서를 통과하면서 접촉롤러로서 측정한 강판길이(L'3)와 센서 P2와 P3사이의 거리(L3)를 이용하여 보정계수(α)를 α=L3/L'3로 구하는 단계; 강판의 길이측정중 강판의 후단부가 P1센서와 S1센서를 통과하였을때 두 센서사이에서 측정된 강판의 진행한 거리(L'1)와 두 센서사이의 거리(L1)를 이용하여 마모후의 접촉롤러의 직경(D')을 초기직경(D)에 대하여 D'=D*(L'1/L1)로 구하여 다음 측정에서 사용토록 하는 단계; 및, 강판이 S1센서를 통과한 후 강판의 후단부가 접촉롤러에 오기전에 강판 표면으로부터 접촉롤러를 이탈시키고 강판의 전체길이(L)를 L = π * D * N + L1 + L2 + L3 으로 구하는 단계를 포함하여 구성되는 것을 특징으로 하는 강판의 길이 측정방법.In the method of measuring the length of the steel sheet in which two plate sensing sensors are installed at the front of the contact roller and three plate sensing sensors are installed at the rear, the length of the steel sheet passes through the S1 sensor. Is lowered to contact the steel sheet; The circumferential speed of the contact roller becomes equal to the speed of the steel sheet while the tip of the steel sheet travels between the S2 sensor and the P2 sensor; Measurement is started while the tip of the steel plate passes through the P2 sensor, and the correction factor α is determined using the steel plate length L'3 measured as the contact roller while passing through the P3 sensor and the distance L3 between the sensors P2 and P3. obtaining α = L3 / L'3; The contact roller after abrasion using the distance L'1 and the distance L1 between the two sensors measured between the two sensors when the rear end of the steel plate passes the P1 and S1 sensors during the length measurement of the steel sheet. Finding the diameter (D ') of the initial diameter (D) D' = D * (L'1 / L1) to use for the next measurement; And after the steel sheet passes through the S1 sensor and before the rear end of the steel sheet comes into the contact roller, the contact roller is released from the surface of the steel sheet and the total length L of the steel sheet is calculated as L = π * D * N + L1 + L2 + L3. Method for measuring the length of the steel sheet, characterized in that it comprises a step. 제2항에 있어서, 두개의 센서P2,P3사이에서 측정된 강판의 진행길이(L'3)의 두센서사이의 거리(L3)를 이용하여 보정계수(α)를 구하고, 강판의 길이(L)를 전체 측정된 길이(L')에 대하여; L = α * L' 로 보정하여 측정중 미끄럼에 의하여 발생하는 오차를 감소시키는 것을 특징으로 하는 강판의 길이측정 방법.The correction coefficient α is obtained by using the distance L3 between the two sensors of the traveling length L'3 measured between two sensors P2 and P3, and the length L of the steel sheet. ) For the total measured length L '; L = α * L 'by measuring the length of the steel sheet characterized in that to reduce the error caused by the sliding during the measurement. 제2항에 있어서, 길이측정을 강판과 접촉롤러가 접촉한 후 강판의 이송속도와 접촉롤러의 원주속도가 같게 되는 지점에서 개시하여 접촉시에 발생하는 미끄럼에 의한 측정오차를 제거토록 하는 것을 특징으로 하는 강판의 길이측정 방법.The method of claim 2, wherein the measurement of the length starts at the point where the feed rate of the steel sheet and the circumferential speed of the contact roller become the same after the contact between the steel sheet and the contact roller, thereby eliminating the measurement error due to sliding occurring at the time of contact. Length measurement method of the steel plate used as. 제2항에 있어서, 측정이 종료되기 전에 P1센서와 S1센서 사이의 거리(L1)와 두 센서사이에서 측정한 거리(L'1)를 이용하여 마모후의 접촉롤러직경(D')을 마모전의 직경(D)에 대하여 D' = D* (L1/L'1)로 구하여 측정오차를 감소시키는 것을 특징으로 하는 강판의 길이측정방법.3. The contact roller diameter (D ') after wear is determined by using the distance (L1) between the P1 and S1 sensors and the distance (L'1) measured between the two sensors before the measurement is finished. A method for measuring the length of a steel sheet, characterized by reducing the measurement error by obtaining D '= D * (L1 / L'1) with respect to the diameter (D). 제2항에 있어서, 접촉롤러와 강판표면에 에어젯트노즐로서 고압의 공기를 분사시켜 접촉롤러의 온도상승 및 이물질의 부착에 의한 직경의 변화를 방지하여 측정정도를 향상시키는 것을 특징으로 하는 강판의 길이측정방법.The method of claim 2, wherein the high pressure air is injected into the contact roller and the surface of the steel sheet as an air jet nozzle to prevent a change in diameter due to temperature rise of the contact roller and adhesion of foreign matter, thereby improving measurement accuracy. How to measure length. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950068424A 1995-12-30 1995-12-30 Measuring method and apparatus for length of steel plate KR100217854B1 (en)

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Application Number Priority Date Filing Date Title
KR1019950068424A KR100217854B1 (en) 1995-12-30 1995-12-30 Measuring method and apparatus for length of steel plate

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Cited By (5)

* Cited by examiner, † Cited by third party
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KR100448440B1 (en) * 2000-12-22 2004-09-13 주식회사 포스코 Speed measurement apparatus and method of hot steel
KR100688178B1 (en) * 2004-12-31 2007-03-02 엘지전자 주식회사 Mobile communication terminal with changing call method according to the ambient noise and its changing method
KR100711390B1 (en) * 2005-09-27 2007-04-30 주식회사 포스코 Apparatus and method for measuring length of strip
KR100742822B1 (en) * 2005-09-27 2007-07-25 주식회사 포스코 Apparatus and method for measuring length of strip
CN110426007A (en) * 2019-08-15 2019-11-08 南京钢铁股份有限公司 It is a kind of for measuring the device and method of steel plate length

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100514784B1 (en) * 2000-05-29 2005-09-15 주식회사 포스코 Apparatus and method for measuring length of billet by tractor
KR100779621B1 (en) * 2001-10-13 2007-11-26 주식회사 포스코 Workpiece length measuring equipment by double roll
KR101130315B1 (en) 2010-03-25 2012-03-26 서재철 apparatus for measuring the strip length

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100448440B1 (en) * 2000-12-22 2004-09-13 주식회사 포스코 Speed measurement apparatus and method of hot steel
KR100688178B1 (en) * 2004-12-31 2007-03-02 엘지전자 주식회사 Mobile communication terminal with changing call method according to the ambient noise and its changing method
KR100711390B1 (en) * 2005-09-27 2007-04-30 주식회사 포스코 Apparatus and method for measuring length of strip
KR100742822B1 (en) * 2005-09-27 2007-07-25 주식회사 포스코 Apparatus and method for measuring length of strip
CN110426007A (en) * 2019-08-15 2019-11-08 南京钢铁股份有限公司 It is a kind of for measuring the device and method of steel plate length

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