KR19980036775U - Roll gap measuring device using non-contact sensor - Google Patents
Roll gap measuring device using non-contact sensor Download PDFInfo
- Publication number
- KR19980036775U KR19980036775U KR2019960049786U KR19960049786U KR19980036775U KR 19980036775 U KR19980036775 U KR 19980036775U KR 2019960049786 U KR2019960049786 U KR 2019960049786U KR 19960049786 U KR19960049786 U KR 19960049786U KR 19980036775 U KR19980036775 U KR 19980036775U
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- roll
- contact sensor
- roll gap
- distance
- gap
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0011—Arrangements for eliminating or compensation of measuring errors due to temperature or weight
- G01B5/0014—Arrangements for eliminating or compensation of measuring errors due to temperature or weight due to temperature
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Continuous Casting (AREA)
Abstract
본 고안은 용탕으로 부터 직접 밥판을 주조하는 쌍롤형 박판 제조장치 중 롤갭을 측정하기 위한 비접촉식 센서를 이용한 롤갭측정 장치에 관한 것으로, 쌍롤 사이에 용강이 주입될 경우 온도 상승에 따라서 롤이 팽창하게 되는데, 이때 롤의 상단부에 있는 두개의 비접촉식 센서를 이용하여 롤 표면의 임의의 점을 감지하면서 기하학을 이용한 실제 롤갭을 측정하도록 하여서 된 것이다.The present invention relates to a roll gap measuring device using a non-contact sensor for measuring the roll gap in the twin roll type sheet manufacturing apparatus for casting the rice plate directly from the molten metal, when the molten steel is injected between the two rolls, the roll expands as the temperature rises. In this case, two non-contact sensors at the upper end of the roll are used to sense an actual point on the roll surface while measuring an actual roll gap using geometry.
Description
본 고안은 용탕으로 부터 직접 박판을 주조하는 쌍롤형 박판 제조장치 중 롤갭을 측정하기 위한 비접촉식 센서를 이용한 롤갭측정 장치에 관한 것으로, 특히 비접촉식 센서로 부터 롤 표면까지의 최단 거리를 감지한 후 미리 알고 있는 각도를 이용하여 롤갭의 절대거리를 간접적으로 측정 할 수 있도록 한 방법에 관한 것이다.The present invention relates to a roll gap measuring device using a non-contact sensor for measuring the roll gap in the twin roll type sheet manufacturing apparatus for casting a thin plate directly from the molten metal, in particular after detecting the shortest distance from the non-contact sensor to the roll surface in advance The present invention relates to a method for indirectly measuring the absolute distance of a roll gap using an angle present.
일반적으로 박판 주조는 도 1에서 도시된 바와같이 쌍롤(10)상부에 용탕(20)을 주입하고, 이 용탕(20)은 쌍롤(10)의 회전에 의하여 박판(30)으로 주조되면서 권취기(40)에 의해 권취되어 코일(50)이 된다.In general, the thin plate casting injects the molten metal 20 into the upper portion of the twin roll 10 as shown in FIG. 1, and the molten metal 20 is cast into the thin plate 30 by the rotation of the twin roll 10. It is wound up by 40 and becomes the coil 50.
단, 상기 쌍롤(10)은 고정롤(10a)과 이동롤(10b)로 구성되어 있다.However, the pair roll 10 is composed of a fixed roll (10a) and a moving roll (10b).
상기와 같은 박판주조 방법은 도 2에서 도시된 바와같이 롤쵸크(60)사이에 장착된 접촉식 센서(70)를 이용하여 롤갭(G)을 측정하였다.In the sheet casting method as described above, the roll gap G was measured using a contact sensor 70 mounted between the roll chocks 60 as shown in FIG. 2.
상기에서 언급된 롤갭(G)이란 고정롤(10a)과 이동롤(10b)사이의 최소거리이고 롤닙(roll nip)의 거리를 의미한다.The above-mentioned roll gap G is the minimum distance between the fixed roll 10a and the moving roll 10b and means the distance of the roll nip.
그러므로 정확하게 말하면 고정롤(10a)과 이동롤(10b)이 설치되는 롤쵸크(60)의 사이인 갭을 의미하는 것이다. 이와 같이 롤쵸크(60)의 갭을 측정하는 이유는 주조시 접촉식 센서(70)로는 고온인 박판의 두께를 측정할 수 없기 때문이다.Therefore, to be precise, it means a gap between the fixed roll 10a and the roll choke 60 on which the moving roll 10b is installed. The reason for measuring the gap of the roll choke 60 as described above is that the contact type sensor 70 cannot measure the thickness of the hot plate at the time of casting.
그러나 롤쵸크(60)와 롤의 사이에는 베어링 틈새로 인한 간격이 있기 때문에 롤쵸크(60)갭과 롤갭이 동일할 수 없으며 그외에서도 용강이 두롤(10a)(10b)사이로 주입되면 온도 상승에 따라서 롤이 팽창하게되고 따라서 실제 롤갭(G)은 감소하게 된다.However, because there is a gap between the roll chocks 60 and the roll due to the gap between the rolls, the gap between the roll chocks 60 and the roll gap cannot be the same, and when molten steel is injected between the two rolls 10a and 10b, the temperature rises. The roll expands and thus the actual roll gap G is reduced.
그러나 종래와 같이 접촉식 센서(70)를 이용한 방법으로는 롤쵸크 갭만을 측정하기 때문에 이러한 롤갭의 변화를 측정할 방법이 없었다.However, in the conventional method using the contact sensor 70, since only the roll choke gap is measured, there is no method of measuring such a change in the roll gap.
본 고안은 상기와 같은 제반 문제점을 감안하여 이를 해소하고자 고안한 것으로, 쌍롤 사이에 용강이 주입될 경우 온도 상승에 따라서 롤이 팽창하게 되는데 롤의 상단부에 있는 두개의 비접촉식 센서를 이용하여 폴 표면의 임의의 점을 감지하면서 기하학을 이용한 실제 롤갭을 측정하도록 한 비접촉식 센서를 이용한 롤갭 측정장치를 제공함에 그 목적이 있는 것이다.The present invention was devised to solve the above problems, and when the molten steel is injected between the two rolls, the roll expands as the temperature rises. It is an object of the present invention to provide a roll gap measuring apparatus using a non-contact sensor to measure an actual roll gap using geometry while detecting an arbitrary point.
이와 같은 목적을 갖는 본 고안의 특징은 쌍롤형 박판 주조 장치에서 롤의 상부에 있는 비접촉식 센서를 이용하여 롤 표면의 점과 비접촉식 센서와의 거리를 감지한 후 기하학의 삼각함수 법을 이용하여 실제의 롤갭을 측정함에 의한다.The characteristics of the present invention having the above object is to detect the distance between the point of the roll surface and the non-contact sensor by using the non-contact sensor on the top of the roll in the twin-roll thin sheet casting apparatus, and then use the trigonometric method of geometry. By measuring the roll gap.
도 1은 일반적인 박판주조장치의 개략도1 is a schematic diagram of a general sheet casting apparatus
도 2는 종래의 롤갭 측정 방법을 나타낸 상태도Figure 2 is a state diagram showing a conventional roll gap measurement method
도 3은 본 고안의 롤갭측정 방법을 나타낸 상태도3 is a state diagram showing a roll gap measurement method of the present invention
* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
10:쌍롤10a:고정롤10: twin roll 10a: fixed roll
10b:이동롤20:용탕10b: moving roll 20: molten metal
30:박판40:권취기30: thin plate 40: winding machine
50:코일60:롤쵸크50: coil 60: roll choke
70:접촉식 센서G:롤갭70: contact sensor G: roll gap
S, S1:비접촉식 센서L, L1:거리S, S 1 : Non-contact sensor L, L 1 : Distance
d, d1:거리N, N1:롤 표면점d, d 1 : Distance N, N 1 : Roll surface point
C:교차점C: Intersection
쌍롤(10)의 상부에 소정의 경사각을 갖도록 비접촉식 센서(S)(S1)을 설치하는 제1공정과, 상기 비접촉식 센서(S)(S1)를 이용하여 일측의 롤 표면점(N)과 비접촉식센서(S)(S1)의 교차점(C)과의 거리(L)를 산출하고 이에 의해서 산출된 표면점(N)과 교차점(C)과의 거리(d)값을 d=L sin θ로 계산하는 제1공정과, 상기 제2공정으로 계산한 다음 일측롤이 열팽창 및 움직임에 의해 위치변형이 일어나면 각각의 비접촉식 센서(S)(S1)가 위치 변형된 롤의 표면점(N1)과 각각의 비접촉식 센서(S)(S1)의 교차점(C)과의 거리(L1)를 산출하고 이에 의해 산출된 표면점(N1)과 교차점(C)과의 거리(d1)값을 d1=L1sin θ로 계산하는 제3공정과, 상기 제2공정으로 계산된 값(d)로 제3공정으로 계산된 값(d1)을 d1-d로 산출하여 롤갭(G)를 측정하는 제4공정으로 이루어 진다.The first step of installing the non-contact sensor (S) (S 1 ) to have a predetermined inclination angle on the upper portion of the pair roll 10, and the roll surface point (N) of one side using the non-contact sensor (S) (S 1 ) Calculates the distance (L) between the intersection point (C) and the non-contact sensor (S) (S 1 ) and calculates the distance (d) between the surface point (N) and the intersection point (C) calculated by d = L sin. The surface point (N) of the roll in which each non-contact sensor (S) (S 1 ) is deformed when one side roll is calculated by θ and the one side roll is subjected to positional deformation due to thermal expansion and movement. 1 ) calculates the distance L 1 between the intersection point C of each non-contact sensor S (S 1 ) and calculates the distance d 1 between the surface point N 1 and the intersection point C calculated therefrom. ) a third step of rolgaep calculating the value (d 1) calculated in the third step to a value (d) calculated in the second step to d 1 -d for calculating a value of d 1 = L 1 sin θ It consists of the 4th process of measuring (G).
이와 같은 방법으로 측정되는 본 고안을 더욱 상세히 설명하면 다음과 같다.Referring to the present invention measured in this way in more detail as follows.
본 고안은 먼저 박판주조를 하기 위하여 설치된 쌍롤(10)의 상부에 소정의 원하고자 하는 각도로 경사지게 각각의 비접촉식 센서(S)(S1)를 설치한 다음 이 비접촉식 센서(S)(S1)를 이용하여 쌍롤(10)의 표면점(N)과 각각의 비접촉식 센서(S)(S1)의 교차점(C)과의 거리(L)를 산출하고, 이에 의해서 산출된 표면점(N)과 교차점(C)과의 거리(d)값을 하기 식 ①로 계산한다.The present invention first installs each non-contact sensor (S) (S 1 ) to be inclined at a desired desired angle on the upper portion of the pair of rolls 10 installed for sheet casting, and then this non-contact sensor (S) (S 1 ) The distance L between the surface point N of the pair roll 10 and the intersection point C of each of the non-contact sensors S and S 1 is calculated, and the surface point N calculated by The value of the distance d from the intersection point C is calculated by the following equation ①.
d = L sin θ--------------------①d = L sin θ -------------------- ①
그 다음에는 상기 쌍롤(10)중 어느 일측롤이 열팽창 및 움직임에 의해서 위치 변형이 일어나면 각각의 비접촉식 센서(S)(S1)가 변형된 일측의 롤 표면점(N1)과 각각의 비접촉식 센서(S)(S1)의 교차점(C)과의 거리(L1)를 산출하고 이에 의해 산출된 표면점(N1)과 교차점(C)과의 거리(d1)값을 하기 식 ②로 계산 한다.Then, if any one of the rolls of the pair of rolls 10 is subjected to positional deformation due to thermal expansion and movement, each of the non-contact sensors S 1 S 1 has a roll surface point N 1 on which the non-contact sensor is deformed. Calculate the distance (L 1 ) between the intersection point (C) of (S) (S 1 ) and calculate the distance (d 1 ) between the surface point (N 1 ) and the intersection point (C) calculated by Calculate.
d1= L1sin θ--------------------②d 1 = L 1 sin θ -------------------- ②
상기와 같이 식 ①, ②에 의해서 계산된 값(d)와 (d1)을 하기식 ③으로 산출하여 롤갭(G)을 측정하는 것이다.As described above, the value (d) and (d 1 ) calculated by the equations ( 1 ) and ( 2 ) are calculated by the following equation (3) to measure the roll gap (G).
d1- d -------------------------③d 1 -d ------------------------- ③
이상과 같은 본 고안은 비접촉식 센서를 이용한 실제 롤갭 측정 방법의 효과는 두롤 사이에 용강이 주입 될 경우 온도 상승에 따라서 롤이 팽창 하게 되는데 롤의 상단부에 있는 두개의 비접촉센서를 이용하여 롤 표면의 임의의 점을 감지하면서 기하학을 이용한 롤갭을 측정할 수 있는 효과가 있다.As described above, the effect of the actual roll gap measurement method using the non-contact sensor is that the roll expands as the temperature rises when molten steel is injected between the two rolls. While detecting the point of the geometry has an effect that can measure the roll gap using the geometry.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960049786U KR19980036775U (en) | 1996-12-16 | 1996-12-16 | Roll gap measuring device using non-contact sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960049786U KR19980036775U (en) | 1996-12-16 | 1996-12-16 | Roll gap measuring device using non-contact sensor |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020010005806A Division KR100391569B1 (en) | 2001-02-07 | 2001-02-07 | Measuring method of roll gap using non-contacting sensor |
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| Publication Number | Publication Date |
|---|---|
| KR19980036775U true KR19980036775U (en) | 1998-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019960049786U KR19980036775U (en) | 1996-12-16 | 1996-12-16 | Roll gap measuring device using non-contact sensor |
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| KR (1) | KR19980036775U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160150480A (en) * | 2015-06-22 | 2016-12-30 | 엘에스엠트론 주식회사 | Apparatus and method for controlling ejector of injection molding machine |
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1996
- 1996-12-16 KR KR2019960049786U patent/KR19980036775U/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160150480A (en) * | 2015-06-22 | 2016-12-30 | 엘에스엠트론 주식회사 | Apparatus and method for controlling ejector of injection molding machine |
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