KR20100048064A - Uniformity measuring method and device for bladder of tire vulcanizing apparatus - Google Patents

Uniformity measuring method and device for bladder of tire vulcanizing apparatus Download PDF

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KR20100048064A
KR20100048064A KR1020080107063A KR20080107063A KR20100048064A KR 20100048064 A KR20100048064 A KR 20100048064A KR 1020080107063 A KR1020080107063 A KR 1020080107063A KR 20080107063 A KR20080107063 A KR 20080107063A KR 20100048064 A KR20100048064 A KR 20100048064A
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South Korea
Prior art keywords
bladder
camera
photographed
compressed air
image
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KR1020080107063A
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Korean (ko)
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최지영
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한국타이어 주식회사
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Publication of KR20100048064A publication Critical patent/KR20100048064A/en

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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
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L17/00—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies
    • G01L17/005—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies using a sensor contacting the exterior surface, e.g. for measuring deformation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/02—Tyres
    • G01M17/027—Tyres using light, e.g. infrared, ultraviolet or holographic techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges

Abstract

PURPOSE: A method and an apparatus for measuring the thickness defect of a bladder used in a tire vulcanization apparatus are provided to prevent a lowering of reliability on a measurement result despite the leakage of the air due to bad assembly between a bladder and a clamp. CONSTITUTION: An apparatus for measuring the thickness defect of a bladder used in a tire vulcanization apparatus comprises upper and lower clamps(2,3), a compressed air supply device(4), a camera(5), an analysis processing part(6) and a monitor(7). The upper and lower clamp fixes a bladder(1). The compressed air supply device supplies the air inside bladder. The camera takes a photograph of a plane view of the bladder. The analysis processing part analyzes the plane image and converts the plane image into data. The monitor displays the result analyzed by the analysis processing part.

Description

타이어 가황장치에 사용되는 블래더의 두께 불량 측정 방법과 장치{Uniformity measuring method and device for bladder of tire vulcanizing apparatus} Uniformity measuring method and device for bladder of tire vulcanizing apparatus

본 발명은 타이어 가황장치에 사용되는 블래더(Bladder)의 두께가 균일한 지의 여부 즉, 블래더 두께 균일성 여부를 측정하는 방법과 장치에 관한 것이다.The present invention relates to a method and apparatus for measuring whether the thickness of the bladder (Bladder) used in the tire vulcanizer is uniform, that is, whether the bladder thickness is uniform.

타이어를 제조함에 있어서는, 그린타이어를 금형에 넣고 그린타이어 내부에 풍선과 같은 블래더를 장치하여 블래더에 열기를 넣어 팽창시킴으로서 그린타이어를 금형에 밀어붙여 타이어를 성형시키고 가황시키게 되는데, 풍선 모양의 블래더가 일정한 두께를 가지지 아니하면 얇은 두께쪽이 더 많이 팽창되어 많이 팽창된 쪽에서 타이어의 두께가 감소되기 마련이며, 그리하면 두께가 일정하지 아니한 불량 타이어가 발생된다. In manufacturing tires, green tires are put in a mold, and a bladder like a balloon is placed inside the green tires to inflate by inserting heat into the bladder to push the green tires into the molds to form and vulcanize the tires. If the bladder does not have a constant thickness, the thinner side is inflated more and the thickness of the tire is reduced at the more inflated side, which results in a bad tire having an indefinite thickness.

그리하여, 블래더의 두께가 일정한지의 여부를 검사한 후, 적정한 블래더를 가황장치에 사용하여 오고 있으며, 이러한 블래더의 두께 일정 여부를 측정하는 방 법으로는, 종래에, 파괴검사방법과 런-아웃(Run out)측정 방법이 있는 바, 파괴검사방법은 다수의 블래더 중 일부를 무작위로 추출하여 절단 파괴한 후 그 두께를 검사하는 방법으로, 피검 블래더의 두께를 정확히 검사할 수 있는 장점이 있으나, 이는 검사되지 않고 사용되는 블래더 자체에 대한 검사가 아니므로 사용되는 블래더의 신뢰성에 의심을 가지게 하며, 런-아웃 측정방법은 블래더에 공기를 넣어 팽창시킨 후 블래더를 회전시키면서 블래더 각 부위의 팽창 정도가 일정한지의 여부를 판별하는 방법으로, 이는 모든 블래더를 검사할 수 있는 장점이 있으나, 회전 장치를 부가하여야 하는 결점이 있고, 또, 블래더를 최소한 일회전은 회전시켜야 함으로, 측정 시간이 비교적 많이 소요되는 결점이 있으며, 특히 런-아웃 측정 방법은 압축공기를 주입한 블래더를 회전시켜가면서 특정 위치에 오는 부분의 원주방향의 치수를 측정하여 블래더의 팽창 불균일을 검출해 내는 방법이기 때문에, 블래더에 주입한 공기의 압력이 일정하여야 하는데, 통상 블래더와 블래더를 장착하는 클램프와의 안착성이 불량하여 압입공기의 누출 염려가 있고, 공기의 누출이 있는 경우, 회전 초기와 회전 말기 사이에는 내부 압력에 차이가 있어 그 측정 결과에 대한 신뢰성이 부족한 결점이 있다. Therefore, after checking whether the thickness of the bladder is constant, an appropriate bladder has been used in the vulcanizing apparatus. As a method of measuring whether the thickness of the bladder is constant, conventionally, a fracture inspection method and There is a run out measurement method, and the fracture inspection method is a method of randomly extracting, cutting, and destroying a portion of a plurality of bladders and inspecting the thickness thereof. This has the advantage, but this is not an inspection of the bladder itself, which is not inspected, so there is doubt about the reliability of the bladder used. As a method of determining whether the degree of expansion of each part of the bladder is constant while rotating, this has the advantage that all bladder can be inspected, but a rotating device must be added. There is a drawback, and at least one rotation of the bladder requires a relatively long measurement time, and the run-out measurement method is particularly useful when rotating the bladder injected with compressed air. Since the expansion unevenness of the bladder is detected by measuring the circumferential dimension of the portion, the pressure of the air injected into the bladder must be constant. If there is a risk of leakage of indented air due to poor, and there is a leak of air, there is a defect that there is a difference in the internal pressure between the beginning of the rotation and the end of the rotation, the reliability of the measurement results.

이에 본 발명은 런 아웃 측정 방식이, 블래더를 회전시켜야 함에서 오는, 비교적 많은 측정시간의 소요 및 측정 결과 신뢰성 부족이라는 결점을 가짐에 주목하여, 이러한 결점을 해소하고 비교적 짧은 시간에 측정할 수 있게 하고, 나아가 블래더와 클램프 사이에 안착성이 불량하여 공기의 누출이 있더라도 측정 결과에 대한 신뢰성에 의념을 가질 필요가 없는 측정 방법과 장치를 제공하여야 한다는 과제를 해결하고자 한다.Therefore, the present invention pays attention to the drawback that the run-out measurement method has a relatively long time required for measuring the bladder, and a lack of reliability as a result of measurement. Furthermore, the present invention aims to solve the problem of providing a measuring method and apparatus in which a poor seating property between the bladder and the clamp does not require an idea of the reliability of the measurement result even if there is a leak of air.

위와 같은 과제를 해결하기 위하여, 본 발명은, 블래더를 고정시키는 상하측 클램프와, 블래더 내부에 공기를 공급하는 압축공기공급장치와, 블래더의 축 직상측에서 팽창된 블래더의 평면도를 촬영하는 카메라와, 카메라에 의하여 촬영된 평면 영상을 분석하여 데이터화하는 분석처리부(PC)와, 분석처리부(PC)에 의해 분석된 결과를 표시하여주는 모니터로 구성되는 측정 장치를 제공하여, 압축공기 공급장치에 의해 압축공기가 공급되어 팽창된 블래더의 평면을 카메라로 촬영하여 촬영된 블래더의 평면 영상으로 블래더의 이상 팽창 여부를 판별케 하는 방법을 제공한다. 그리고, In order to solve the above problems, the present invention, the upper and lower clamps for fixing the bladder, the compressed air supply device for supplying air to the inside of the bladder, and the planar view of the bladder inflated from the shaft side of the bladder Compressed air by providing a measuring device comprising a camera to shoot, an analysis processing unit (PC) for analyzing and converting the planar image photographed by the camera and a monitor for displaying the results analyzed by the analysis processing unit (PC), Compressed air is supplied by the supply device to provide a method of determining whether the bladder is abnormally expanded by taking a plane image of the bladder photographed by the camera photographing the plane of the expanded bladder. And,

카메라로 촬영된 블래더의 평면 영상으로 블래더의 이상 팽창 여부를 판별함에 있어서는, 최초 팽창전 촬영영상을 모눈판에 투영하여 단면적을 계산하고, 팽창 압력을 서서히 증가시키면서 계속해서 단면적을 측정하고, 블래더 종류별로 그 최초 크기가 상이하므로 동일기준에서 이상팽창량을 판정하기 위해 단면적이 최초 촬영된 단면적의 약 2배가 되었을때의 촬영영상을 이용하여 블래더의 이상 팽창여부를 판별한다. 촬영된 영상으로부터 최소 반경부의 반경과 다른 측정부위의 반경을 비교하여 그 차이로써 이상 팽창 여부를 판별케 하는 방법을 제공한다. In determining whether the bladder is abnormally inflated by the planar image of the bladder photographed by the camera, the cross-sectional area is calculated by projecting the first pre-expansion photographed image on the grid, and the cross-sectional area is continuously measured while gradually increasing the inflation pressure. Since the initial size of each bladder is different, it is determined whether the bladder is abnormally expanded by using the photographed image when the cross-sectional area is about twice the first photographed cross-sectional area to determine the amount of abnormal expansion. It provides a method of comparing the radius of the minimum radius portion and the radius of the other measurement site from the captured image to determine whether the abnormal expansion.

이와 같은 본 발명은, 압축공기를 공급한 상태에서의 임의의 순간 상태에서의 상황을 판단 근거로 함으로, 측정 자료의 획득 시간이 순간에 불과하며 이를 연산하는 장치 또한 컴퓨터이니 측정에 소요되는 시간이 극히 적은 장점이 있으며, 나아가 블래더와 클램프 사이에 안착성이 불량하여 공기의 누출이 있더라도, 본 발명은, 측정하는 순간에서의 압력 상태에 따른 당해 블래더의 부위별 변형 상태를 측정하게 함으로는 비록 클램프와 블래더의 안착 상태가 불량하여 압축공기의 누출이 있더라도 결과에 대한 신뢰성에 의념을 가질 필요가 없는 측정 방법과 장치를 제공하는 효과가 있다.The present invention as described above, based on the judgment in any instant state in the state of supplying the compressed air, the acquisition time of the measurement data is only instantaneous and the device for calculating it is also a computer, the time required for measurement There are very few advantages, and even if there is a leak of air due to poor seating between the bladder and the clamp, the present invention allows to measure the deformation state of each part of the bladder according to the pressure state at the moment of measurement. Although the clamp and bladder are poorly seated and there is a leak of compressed air, there is an effect of providing a measuring method and apparatus that does not have to be concerned about the reliability of the result.

본 발명은, 블래더(1)를 고정시키는 상하측 클램프(2,3)와, 블래더(1) 내부에 공기를 공급하는 압축공기공급장치(4)와, 블래더(1)의 중심축 직상측에서 팽창 된 블래더(1)의 평면도를 촬영하는 카메라(5)와, 카메라(5)에 의하여 촬영된 평면 영상을 분석하여 데이터화하는 분석처리부(6; PC)와, 분석처리부(6)에 의해 분석된 결과를 표시하여주는 모니터(7)로 구성되는 측정 장치를 제공한다.The present invention provides upper and lower clamps (2, 3) for fixing the bladder (1), a compressed air supply device (4) for supplying air into the bladder (1), and the central axis of the bladder (1) Camera 5 for photographing a plan view of the bladder 1 inflated from the upper side, an analysis processor (PC) 6 for analyzing and converting the planar image photographed by the camera 5, and an analysis processor 6 It provides a measuring device consisting of a monitor (7) for displaying the results analyzed by.

본 발명에 있어서의 핵심적인 특징은 카메라(5)가 블래더(1)의 중심축 직상부에 설치되어 블래더(1)의 평면도를 촬영한다는 것이다. 즉, 카메라의 설치 위치와 카메라에 의하여 얻는 사진의 내용인 평면도에 본 발명의 핵심적인 특징이 있다. 임의 팽창시에 있어서의 블래더의 전체 평면도를 얻어야 블래더가 모든 부분에서 균일하게 팽창되었는지 아니면 일부에서 이상 팽창되었는 지를 판단할 수 있기 때문이다. A key feature of the present invention is that the camera 5 is installed directly above the central axis of the bladder 1 to take a top view of the bladder 1. In other words, there is a key feature of the present invention in the installation position of the camera and the plan view which is the content of the photograph obtained by the camera. This is because it is necessary to obtain the overall plan view of the bladder at any time of expansion to determine whether the bladder is expanded uniformly in all parts or abnormally in some parts.

나아가, 본 발명은, 압축공기 공급장치(4)에 의해 압축공기가 공급되어 팽창된 블래더(1)를 카메라(5)로 촬영하여 촬영된 블래더(1)의 평면도 영상으로 블래더(1)의 이상 팽창 여부를 판별케 하는 방법을 제공한다. 그리고, 카메라(5)로 촬영된 블래더(1)의 평면 영상으로 블래더(1)의 이상 팽창 여부를 판별함에 있어서는, 최초 팽창전 촬영영상을 모눈판에 투영하여 단면적을 계산하고, 팽창압력을 서서히 증가시키면서 계속해서 단면적을 측정하고, 이 단면적이 최초 촬영된 단면적의 약 2배가 되었을때의 촬영영상을 이용하여 블래더의 이상 팽창여부를 판별한다. Furthermore, in the present invention, the compressed air is supplied by the compressed air supply device 4 and the bladder 1 is a planar image of the bladder 1 photographed by photographing the expanded bladder 1 with the camera 5. It provides a method to determine whether the abnormal expansion of). In determining whether the bladder 1 is abnormally expanded by the planar image of the bladder 1 photographed by the camera 5, the cross-sectional area is calculated by projecting the photographed image before the first expansion onto the grid plate, and the inflation pressure is obtained. The cross-sectional area is continuously measured while gradually increasing and the bladder is judged to be abnormally expanded by using the photographed image when the cross-sectional area is about twice that of the original photographed area.

촬영된 영상으로부터 최소 반경부(가)의 반경과 다른 측정부위의 반경(다,라)을 비교하여 그 차이로써 이상 팽창 여부를 판별케 하는 방법을 제공한다. It provides a method for comparing the radius of the minimum radius (a) and the radius of the other measurement site (d) from the captured image to determine whether the abnormal expansion.

도1은 본 발명의 일 실시예의 블록도1 is a block diagram of one embodiment of the present invention;

도2는 본 발명의 일 실시예인 이상 팽창 판별 방법 설명도2 is an explanatory diagram illustrating an abnormal expansion determination method according to an embodiment of the present invention.

도3은 본 발명의 다른 실시예인 이상 팽창 판별 방법 설명도3 is an explanatory diagram illustrating a method of determining abnormal expansion according to another embodiment of the present invention.

Claims (4)

블래더를 고정시키는 상하측 클램프와, 블래더 내부에 공기를 공급하는 압축공기공급장치와, 블래더의 중심축 직상측에서 팽창된 블래더의 평면도를 촬영하는 카메라와, 카메라에 의하여 촬영된 평면 영상을 분석하여 데이터화하는 분석처리부(PC)와, 분석처리부(PC)에 의해 분석된 결과를 표시하여주는 모니터로 구성되는 것을 특징으로 하는 타이어 가황장치에 사용되는 블래더의 두께 불량 측정 장치.Upper and lower clamps for fixing the bladder, a compressed air supply device for supplying air into the bladder, a camera for photographing a plan view of the bladder expanded directly above the central axis of the bladder, and a plane photographed by the camera An apparatus for measuring thickness defects of a bladder used in a tire vulcanizing apparatus, characterized by comprising an analysis processing unit (PC) for analyzing and converting an image into data, and a monitor displaying the results analyzed by the analysis processing unit (PC). 압축공기 공급장치에 의해 압축공기가 공급되어 팽창된 블래더를 카메라로 촬영하여 촬영된 블래더의 평면 영상으로 블래더의 이상 팽창 여부를 판별하는 것을 특징으로 하는 타이어 가황장치에 사용되는 블래더의 두께 불량 측정 방법.The bladder of the bladder used in a tire vulcanizing apparatus, characterized in that the compressed air is supplied by the compressed air supply device to determine whether the bladder is abnormally expanded by taking a plane image of the bladder photographed by the camera. How to measure thickness defects. 제2항에 있어서, 카메라로 촬영된 블래더의 평면 영상으로 블래더의 이상 팽창 여부를 판별함에 있어서는, 촬영 영상을 모눈판에 투영하고, 최소반경부위의 반경을 반경으로 하는 원의 면적과 투영 평면적을 비교하여 이상 팽창 여부를 판별하게 하는 것을 특징으로 하는 타이어 가황장치에 사용되는 블래더의 두께 불량 측정 방법.      The method according to claim 2, wherein in determining whether the bladder is abnormally expanded by the planar image of the bladder photographed by the camera, projecting the photographed image onto the grid plate, and projecting the area and the circle of the circle whose radius is the minimum radius portion. A method for measuring thickness defects of a bladder used in a tire vulcanizing apparatus, characterized by comparing the plane area to determine whether or not abnormal expansion. 제2항에 있어서, 카메라로 촬영된 블래더의 평면 영상으로 블래더의 이상 팽창 여부를 판별함에 있어서는, 촬영된 영상으로부터 최소 반경부의 반경(가)과 측정부위(다, 라)의 반경을 비교하여 이상 팽창량을 측정함으로서 이상 팽창 여부를 판별하게 하는 것을 특징으로 하는 타이어 가황장치에 사용되는 블래더의 두께 불량 측정 방법.      The method of claim 2, wherein in determining whether the bladder is abnormally expanded by the planar image of the bladder photographed by the camera, the radius of the minimum radius portion (a) and the radius of the measurement portion (d) are compared from the photographed image. And measuring the abnormal expansion amount to determine whether or not abnormal expansion of the thickness of the bladder used in the tire vulcanizing apparatus.
KR1020080107063A 2008-10-30 2008-10-30 Uniformity measuring method and device for bladder of tire vulcanizing apparatus KR20100048064A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105333848A (en) * 2015-11-23 2016-02-17 西安航空制动科技有限公司 Device and method for measuring aircraft tire compression amount
CN105466371A (en) * 2015-11-23 2016-04-06 西安航空制动科技有限公司 Apparatus of measuring aircraft landing gear wheel shaft end position and measurement method thereof
KR101697440B1 (en) 2015-10-30 2017-01-17 금호타이어 주식회사 The Method for Uniformity Measuring of Tire Cure Bladder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101697440B1 (en) 2015-10-30 2017-01-17 금호타이어 주식회사 The Method for Uniformity Measuring of Tire Cure Bladder
CN105333848A (en) * 2015-11-23 2016-02-17 西安航空制动科技有限公司 Device and method for measuring aircraft tire compression amount
CN105466371A (en) * 2015-11-23 2016-04-06 西安航空制动科技有限公司 Apparatus of measuring aircraft landing gear wheel shaft end position and measurement method thereof

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