JP5169979B2 - Packing twist detection device - Google Patents
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- JP5169979B2 JP5169979B2 JP2009106980A JP2009106980A JP5169979B2 JP 5169979 B2 JP5169979 B2 JP 5169979B2 JP 2009106980 A JP2009106980 A JP 2009106980A JP 2009106980 A JP2009106980 A JP 2009106980A JP 5169979 B2 JP5169979 B2 JP 5169979B2
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Description
本発明は、パッキンねじれ検出装置に関する。 The present invention relates to a packing twist detection device.
図１は、特許文献１に例示された熱交換器３０の構成を示す分解斜視図である。
特許文献１に示された熱交換器３０を一例として説明すると、熱交換流体が通過するチューブと、チューブの間を通過する空気との熱交換を促進させるフィンとを交互に積層して、熱交換流体と空気とが熱交換するコア部３１を形成している。このコア部３１のチューブの両端部（図１の斜視図における上部と下部）には、上側コアプレート（コアプレート）１５Ａと下側コアプレート（コアプレート）１５Ｂの二つのコアプレート１５が設けられている。このコアプレート１５には、シール用のパッキン１７が組み込まれる。さらに、それぞれのコアプレート１５には、上側タンク（タンク）１６Ａと下側タンク（タンク）１６Ｂの二つのタンク）１６が、パッキン１７を挟んだ状態で組み合わされる。その際、コアプレート１５とタンク１６とを結合させるため、コアプレートに形成した突片（かしめ爪）を折り曲げてタンクをかしめ固定する。
このような熱交換器において、パッキンとしてゴム等の弾性材を用いているので、コアプレートとタンク本体とを締結する際に、パッキン部材が弾性変形して捩れ、あるいは、位置ズレが発生する場合がある。この場合、タンクのシール面とコアプレートのシール面との間に微少隙間が生じるので、タンク内空間から流体が洩れる可能性があった。
FIG. 1 is an exploded perspective view showing the configuration of the heat exchanger 30 exemplified in Patent Document 1. As shown in FIG.
The heat exchanger 30 shown in Patent Document 1 will be described as an example. A tube through which a heat exchange fluid passes and a fin that promotes heat exchange with air passing between the tubes are alternately stacked, The core part 31 in which the exchange fluid and air exchange heat is formed. Two core plates 15 of an upper core plate (core plate) 15A and a lower core plate (core plate) 15B are provided at both ends of the tube of the core portion 31 (upper and lower portions in the perspective view of FIG. 1). ing. A seal 17 for sealing is incorporated in the core plate 15. Further, each core plate 15 is combined with two tanks (an upper tank (tank) 16A and a lower tank (tank) 16B) 16 with a packing 17 interposed therebetween. At that time, in order to connect the core plate 15 and the tank 16, the projecting piece (caulking claw) formed on the core plate is bent and the tank is caulked and fixed.
In such a heat exchanger, since an elastic material such as rubber is used as packing, when the core plate and the tank body are fastened, the packing member is elastically deformed and twisted or misaligned. There is. In this case, a minute gap is formed between the sealing surface of the tank and the sealing surface of the core plate, so that there is a possibility that fluid leaks from the space in the tank.
本発明は、上記問題に鑑み、熱交換器におけるパッキンねじれ検出装置を提供するものである。 In view of the above problems, the present invention provides a packing twist detection device in a heat exchanger.
上記課題を解決するために、請求項１の発明は、かしめ爪（３）が外周に形成されたコアプレート（１５）内に、パッキン（１７）が配置された場合に、前記パッキン（１７）のシール面の傾き角度を検出するパッキンねじれ検出装置であって、該パッキンねじれ検出装置は、２次元形状計測センサ（４０）と、該２次元形状計測センサ（４０）又は前記コアプレート（１５）のいずれか一方を、前記コアプレート（１５）の長手方向に相対的に移動させる駆動機構(５０)と、前記パッキン（１７）のシール面の傾き角度を演算する演算部とを具備するパッキンねじれ検出装置において、前記２次元形状計測センサ（４０）が、前記コアプレート（１５）の長手方向に、前記かしめ爪（３）の所定ピッチ毎に、前記コアプレート（１５）、及び、前記パッキン（１７）の断面を計測して、前記演算部が、前記断面の計測情報に基づいて、前記所定ピッチ毎に、前記コアプレート（１５）の傾き角度を差し引いた前記パッキン（１７）のシール面の傾き角度（θ）を算出して、所定の閾値と比較して良否判定を行うパッキンねじれ検出装置である。 In order to solve the above problems, the invention of claim 1 is directed to the packing (17) when the packing (17) is disposed in the core plate (15) having the caulking claw (3) formed on the outer periphery. A packing torsion detection device for detecting the inclination angle of the seal surface of the seal, the packing torsion detection device comprising a two-dimensional shape measurement sensor (40) and the two-dimensional shape measurement sensor (40) or the core plate (15). A twisted packing comprising: a drive mechanism (50) for moving either one of the core plate (15) relative to the longitudinal direction of the core plate (15); and a calculator for calculating the inclination angle of the seal surface of the packing (17). In the detection device, the two-dimensional shape measurement sensor (40) is arranged in the longitudinal direction of the core plate (15) at a predetermined pitch of the caulking claw (3). The packing (17) is obtained by measuring the cross section of the packing (17), and the calculation unit subtracting the inclination angle of the core plate (15) for each predetermined pitch based on the measurement information of the cross section. This is a packing twist detection device that calculates the inclination angle (θ) of the seal surface and makes a pass / fail judgment by comparing with a predetermined threshold value.
これにより、熱交換器のコアプレートとタンクを、パッキンを介して結合する前に、パッキンのねじれの状態を検出することができ、パッキンがねじれた状態で爪をかしめた場合の不良を、自動的に判別して排除することができる。 As a result, it is possible to detect the twisting state of the packing before the core plate and the tank of the heat exchanger are connected via the packing, and automatically detect defects when the claws are crimped while the packing is twisted. Can be determined and eliminated.
請求項２の発明は、請求項１の発明において、前記コアプレート（１５）の傾き角度、及び、前記パッキン（１７）のシール面の傾き角度（θ）を、かしめ爪（３）の中央で算出することを特徴とする。これにより、パッキン１７とコアプレート１５の傾き角度について、同時に計測することができる。 The invention of claim 2 is the invention of claim 1, wherein the inclination angle of the core plate (15) and the inclination angle (θ) of the seal surface of the packing (17) are set at the center of the caulking claw (3). It is characterized by calculating. Thereby, the inclination angle of the packing 17 and the core plate 15 can be measured simultaneously.
請求項３の発明は、請求項１又は２の発明において、前記コアプレート（１５）を静止させて、前記駆動機構(５０)が、前記２次元形状計測センサ（４０）を、前記コアプレート（１５）の長手方向に移動させることを特徴とする。これにより、前記コアプレート（１５）内に配置された前記パッキン（１７）のシール面の傾きを、静止した状態で検出するので、正確に検出することが出来る。 According to a third aspect of the present invention, in the first or second aspect of the invention, the core plate (15) is stopped, and the drive mechanism (50) moves the two-dimensional shape measurement sensor (40) to the core plate ( 15) It is characterized by moving in the longitudinal direction. Thereby, since the inclination of the sealing surface of the said packing (17) arrange | positioned in the said core plate (15) is detected in a stationary state, it can detect correctly.
なお、上記に付した符号は、後述する実施形態に記載の具体的実施態様との対応関係を示す一例である。 In addition, the code | symbol attached | subjected above is an example which shows a corresponding relationship with the specific embodiment as described in embodiment mentioned later.
以下、図面を参照して、本発明の一実施形態のパッキンねじれ検出装置を説明する。従来技術や、一実施態様の変形態様について、同一構成の部分には、同一の符号を付してその説明を省略する。本発明の一実施形態が、本発明の基礎となった比較技術に対しても同一構成の部分には同一の符号を付してその説明を省略する。
図２は、本発明の一実施形態におけるコアプレート１５を示す写真図である。１７は、パッキンを示し、３はかしめ爪であり、４は、かしめ爪３とかしめ爪３の間の谷を示す。コアプレート１５の外周にかしめ爪３が形成されている。かしめ爪３とかしめ爪３との間のピッチはｐである。一例として、かしめ爪３の幅が６ｍｍ程度、谷４が３ｍｍ程度、ピッチｐ＝９ｍｍ程度として、以下に説明する。
Hereinafter, a packing twist detecting device according to an embodiment of the present invention will be described with reference to the drawings. About the prior art and the deformation | transformation aspect of one embodiment, the same code | symbol is attached | subjected to the part of the same structure, and the description is abbreviate | omitted. In the embodiment of the present invention, the same reference numerals are given to the same components with respect to the comparative technique on which the present invention is based, and the description thereof is omitted.
FIG. 2 is a photograph showing the core plate 15 in one embodiment of the present invention. Reference numeral 17 denotes a packing, 3 denotes a caulking claw, and 4 denotes a valley between the caulking claw 3 and the caulking claw 3. A caulking claw 3 is formed on the outer periphery of the core plate 15. The pitch between the caulking claw 3 and the caulking claw 3 is p. As an example, the following explanation will be made assuming that the width of the caulking claw 3 is about 6 mm, the valley 4 is about 3 mm, and the pitch p is about 9 mm.
図３は、コアプレート１５のシール面に対して、パッキン１７のシール面が、θ傾いている状態を示す図である。
図４は、本発明の基礎となった比較技術を示す概要図である。この比較技術では、パッキンねじれチェック方法として、視覚装置２１（２台のカメラ）とレーザ発光装置２２とを被計測対象物に対して測定方向に移動させるユニット２０で構成していた。レーザで被計測対象物を照射しそのレーザ光を視覚装置２１で検出後、２値化して良否判別を行っていた。この場合、視覚による良否判別はできるものの、ねじれの状態までの検出は困難であり、上からの投射では断面形状の測定が困難であった。
FIG. 3 is a view showing a state where the seal surface of the packing 17 is inclined by θ with respect to the seal surface of the core plate 15.
FIG. 4 is a schematic diagram showing a comparative technique on which the present invention is based. In this comparative technique, as a packing twist check method, the visual device 21 (two cameras) and the laser light emitting device 22 are configured by a unit 20 that moves in a measurement direction with respect to an object to be measured. The object to be measured is irradiated with a laser, and the laser beam is detected by the visual device 21, and then binarized to determine whether it is good or bad. In this case, although it is possible to visually determine whether the product is good or bad, it is difficult to detect the torsional state, and it is difficult to measure the cross-sectional shape by projection from above.
これに対して、本発明の一実施形態は次のようなものである。図５は、本発明の一実施形態を示す概要図である。本発明の一実施形態では、２次元形状計測センサ４０を、被測定対象物であるコアプレート１５の長手方向（矢印方向）に、駆動機構としてのローダ５０（図示せず）により移動させる。ここで、コアプレート１５の長手方向（矢印方向）をＺ軸とし、コアプレート１５の幅方向をＸ軸とし、コアプレートの設置平面に対して高さ方向をＹ軸とする。本発明の一実施形態では、２次元形状計測センサ４０を、コアプレート１５の長手方向（矢印方向）に移動させたが、２次元形状計測センサ４０を固定して、コアプレート１５の方を移動させても良い。この場合は、駆動機構はコアプレート１５の搬送装置などを指す。 On the other hand, an embodiment of the present invention is as follows. FIG. 5 is a schematic diagram showing an embodiment of the present invention. In one embodiment of the present invention, the two-dimensional shape measurement sensor 40 is moved by a loader 50 (not shown) as a drive mechanism in the longitudinal direction (arrow direction) of the core plate 15 that is the object to be measured. Here, the longitudinal direction (arrow direction) of the core plate 15 is taken as the Z axis, the width direction of the core plate 15 is taken as the X axis, and the height direction with respect to the installation plane of the core plate is taken as the Y axis. In one embodiment of the present invention, the two-dimensional shape measurement sensor 40 is moved in the longitudinal direction (arrow direction) of the core plate 15, but the two-dimensional shape measurement sensor 40 is fixed and moved toward the core plate 15. You may let them. In this case, the drive mechanism refers to a conveying device for the core plate 15 or the like.
２次元形状計測センサ４０は、Ｘ軸方向に２台設置して、コアプレート１５の幅方向の両側にあるパッキンを計測する。２次元形状計測センサ４０は、レーザビームをＸ軸方向にスキャンさせて（図５の三角形）、Ｙ軸方向の高さ情報を基準位置から測長して記憶する。
図６は、コアプレート１５とパッキン１７の断面を示す概要図である。２次元形状計測センサ４０は、両側のかしめ爪の高さｙ４、ｙ１４、コアプレート１５の幅方向の両側にあるパッキンの高さを計測する。これにより、Ｚ軸方向にわたって、コアプレート１５とパッキン１７の断面の計測情報を得ることが出来る。
Two two-dimensional shape measurement sensors 40 are installed in the X-axis direction and measure packings on both sides of the core plate 15 in the width direction. The two-dimensional shape measurement sensor 40 scans the laser beam in the X-axis direction (triangle in FIG. 5), measures the height information in the Y-axis direction from the reference position, and stores it.
FIG. 6 is a schematic view showing a cross section of the core plate 15 and the packing 17. The two-dimensional shape measuring sensor 40 measures the heights y4 and y14 of the caulking claws on both sides and the height of the packing on both sides in the width direction of the core plate 15. Thereby, the measurement information of the cross section of the core plate 15 and the packing 17 can be obtained over the Z-axis direction.
２次元形状計測センサ４０を被計測対象物に対し移動させながら、各かしめ爪３中央で被計測対象物の断面を計測し、後述するように、その測定値をシーケンサにて演算し判定する。このとき、２次元形状計測センサ４０を移動させているローダ５０の位置を常時監視し、かしめ爪中央の位置に到着したら、２次元形状計測センサ４０にタイミングを出力し測定する。かしめ爪中央の位置は、２次元形状計測センサ４０が谷４からかしめ爪３に高さが変わったＺ軸位置を検出すればよい。そして、かしめ爪の寸法の半分の位置（コアプレート製品情報を利用）に、２次元形状計測センサ４０が移動した時点で、被計測対象物の断面を計測する。本実施形態では、かしめ爪中央のポイントで計測したが、かしめ爪の谷で計測しても良い。しかしながら、かしめ爪中央のポイントで計測した方が、パッキン１７とコアプレート１５の傾き角度について同時に計測できる。 While moving the two-dimensional shape measurement sensor 40 with respect to the object to be measured, the cross section of the object to be measured is measured at the center of each caulking claw 3, and the measured value is calculated and determined by a sequencer as will be described later. At this time, the position of the loader 50 that is moving the two-dimensional shape measurement sensor 40 is constantly monitored. When the loader 50 arrives at the center of the crimping claw, the timing is output to the two-dimensional shape measurement sensor 40 and measured. As for the position of the center of the caulking claw, the two-dimensional shape measurement sensor 40 may detect the Z-axis position where the height has changed from the valley 4 to the caulking claw 3. Then, when the two-dimensional shape measurement sensor 40 moves to a position half the size of the caulking claw (using the core plate product information), the cross section of the measurement object is measured. In this embodiment, the measurement is performed at the center point of the caulking nail, but the measurement may be performed at the valley of the caulking nail. However, it is possible to simultaneously measure the inclination angles of the packing 17 and the core plate 15 by measuring at the center of the caulking claw.
２次元形状計測センサ４０が、コアプレート１５の長手方向の所定ピッチ毎に、コアプレート１５、及び、コアプレート１５内に配置されたパッキン１７の断面を計測する点について、演算部が行う処理について説明する。 About the process which a calculating part performs about the point which the two-dimensional shape measurement sensor 40 measures the cross section of the packing 17 arrange | positioned in the core plate 15 and the core plate 15 for every predetermined pitch of the longitudinal direction of the core plate 15. explain.
Ｘ軸方向に２次元形状計測センサ４０がスキャンして、形状全体を検出しても良いが、ここでは処理スピードアップのため、爪３の検出とパッキン１５のシール面の検出を行う一実施形態について述べる。
爪３の検出は、コアプレート１５の製品情報を利用して、Ｙ軸方向の爪３の存在する範囲において、２次元形状計測センサ４０が谷４からかしめ爪３に高さが変わったＺ軸位置を検出すればよい。かしめ爪の寸法の半分の位置に、２次元形状計測センサ４０が移動した時点でコアプレート１５の両側の爪３の高さ（ｘ４、ｙ４）、（ｘ１４、ｙ１４）を検出する。ｘ１４−ｘ４はコアプレート１５の幅Ｌを表している。
The two-dimensional shape measurement sensor 40 may scan in the X-axis direction to detect the entire shape, but here, in order to increase the processing speed, an embodiment in which the claw 3 is detected and the seal surface of the packing 15 is detected. Is described.
The nail 3 is detected using the product information of the core plate 15 in the range where the nail 3 exists in the Y-axis direction. What is necessary is just to detect a position. The heights (x4, y4) and (x14, y14) of the claws 3 on both sides of the core plate 15 are detected when the two-dimensional shape measurement sensor 40 moves to a position half the size of the caulking claws. x14-x4 represents the width L of the core plate 15.
次に、パッキン１７のシール面の検出について述べる。
図７は、パッキン１７のシール面の検出を説明する説明図である。図７に示すように、パッキン１７が入るコアプレート１５の枠の中央に、角度測定ウィンドウＷを設定する。角度測定ウィンドウＷの幅ａは、コアプレート１５の枠の中央に角度測定ウィンドウＷを設定した場合に、角度測定ウィンドウＷのＸ軸方向全てに亘ってパッキン１７のシール面が必ず存在するように設定する。一例として、ａ＝０．８ｍｍ程度に設定する。
角度測定ウィンドウＷ内で、２次元形状計測センサ４０により得られた、ピーク位置及びボトム位置の２点を取出し、それらの座標位置（ｘ１１、ｙ１１）、（ｘ１２、ｙ１２）の計測情報（図７はコアプレート１５の右側、この場合を右側パッキンという）を演算部が記憶する。同様にして、コアプレート１５の右側（この場合を左側パッキンという）についても、角度測定ウィンドウＷを設定して、ピーク位置及びボトム位置の２点を取出し、それらの座標位置（ｘ１、ｙ１）、（ｘ２、ｙ２）の計測情報を得る。パッキン１７のシール面のＹ軸位置が、単調減少、単調増加の場合は、ピーク位置及びボトム位置は、角度測定ウィンドウＷの左右境界上に現れる。
Next, detection of the seal surface of the packing 17 will be described.
FIG. 7 is an explanatory view for explaining detection of the seal surface of the packing 17. As shown in FIG. 7, an angle measurement window W is set at the center of the frame of the core plate 15 in which the packing 17 is inserted. The width a of the angle measurement window W is such that when the angle measurement window W is set at the center of the frame of the core plate 15, the seal surface of the packing 17 always exists over the entire X-axis direction of the angle measurement window W. Set. As an example, a is set to about 0.8 mm.
In the angle measurement window W, two points of the peak position and the bottom position obtained by the two-dimensional shape measurement sensor 40 are taken out, and measurement information of their coordinate positions (x11, y11), (x12, y12) (FIG. 7). Is stored on the right side of the core plate 15, in this case the right side packing). Similarly, for the right side of the core plate 15 (in this case, the left side packing), an angle measurement window W is set, and two points of the peak position and the bottom position are taken out, and their coordinate positions (x1, y1), Measurement information of (x2, y2) is obtained. When the Y-axis position of the seal surface of the packing 17 is monotonously decreased or monotonically increased, the peak position and the bottom position appear on the left and right boundaries of the angle measurement window W.
図８は、コアプレート１５とパッキン１７のシール面の傾きの検出を説明する説明図である。図６、７のＹ軸の正方向を、図８では逆にとって第１象限で表示してある。
以上の２次元形状計測センサ４０から得られた断面の計測情報を用いて、演算部は以下の処理をして、両側のかしめ爪３上端の距離を求めて、その距離の差分値とコアプレート幅Ｌより傾き角を算出する。（ｘ１４−ｘ４が正の場合はＬで置き換えられる。）
ピーク位置及びボトム位置の２点を取出し（それらのどちらがピークかボトムかを決めることなく）、それらの座標位置をＸ軸正方向に沿って順に、（ｘ１、ｙ１）及び（ｘ２、ｙ２）、（ｘ１２、ｙ１２）及び（ｘ１１、ｙ１１）とする。
FIG. 8 is an explanatory diagram for explaining the detection of the inclination of the sealing surfaces of the core plate 15 and the packing 17. The positive direction of the Y-axis in FIGS. 6 and 7 is shown in the first quadrant in FIG.
Using the cross-section measurement information obtained from the above two-dimensional shape measurement sensor 40, the calculation unit performs the following process to obtain the distance between the upper ends of the caulking claws 3 on both sides, and the difference value of the distance and the core plate The inclination angle is calculated from the width L. (If x14-x4 is positive, it is replaced with L.)
Two points of the peak position and the bottom position are taken out (without deciding which of them is the peak or the bottom), and their coordinate positions are sequentially (x1, y1) and (x2, y2) along the positive direction of the X axis, Let (x12, y12) and (x11, y11).
コアプレート傾き角度＝ＡＲＣＴＡＮ［（ｙ１４−ｙ４）／（ｘ１４−ｘ４）］
左側パッキン傾き角度＝ＡＲＣＴＡＮ［（ｙ２−ｙ１）／（ｘ２−ｘ１）］
右側パッキン傾き角度＝ＡＲＣＴＡＮ［（ｙ１１−ｙ１２）／（ｘ１１−ｘ１２）］
Core plate tilt angle = Arctan [(y14-y4) / (x14-x4)]
Left side packing inclination angle = ARCtan [(y2-y1) / (x2-x1)]
Right side packing inclination angle = Arctan [(y11−y12) / (x11−x12)]
コアプレート１５に対するパッキン１７の傾き角度θは以下のようにして求められる。
左側パッキン傾き角度θ＝ＡＲＣＴＡＮ［（ｙ２−ｙ１）／（ｘ２−ｘ１）］
−ＡＲＣＴＡＮ［（ｙ１４−ｙ４）／（ｘ１４−ｘ４）］
右側パッキン傾き角度θ＝ＡＲＣＴＡＮ［（ｙ１１−ｙ１２）／（ｘ１１−ｘ１２）］ −ＡＲＣＴＡＮ［（ｙ１４−ｙ４）／（ｘ１４−ｘ４）］
The inclination angle θ of the packing 17 with respect to the core plate 15 is obtained as follows.
Left side packing inclination angle θ = ARCtan [(y2-y1) / (x2-x1)]
-Arctan [(y14-y4) / (x14-x4)]
Right side packing inclination angle θ = ARCTAAN [(y11−y12) / (x11−x12)] − ARCTAAN [(y14−y4) / (x14−x4)]
なお、左側パッキンについて、ピーク位置の座標位置を（ｘ１１、ｙ１１）と定め、ボトム位置の座標位置を（ｘ１２、ｙ１２）と定めて取出す場合は、上記式において符号をそれに相応させる必要がある。（左側パッキンについても同様である。） In the case of taking out the left packing with the coordinate position of the peak position set as (x11, y11) and the coordinate position of the bottom position set as (x12, y12), it is necessary to make the code correspond to it. (The same applies to the left packing.)
一例として５ピッチの場合、ｎ番目のピッチでのパッキン傾き角度θ、ｎ＋５番目のパッキン傾き角度θと、順に閾値αと比較して、１箇所でもそれより大きい場合を不良として、排出する。この場合は５ピッチ毎であったが、任意の整数ピッチ毎でも良い。 As an example, in the case of 5 pitches, the packing inclination angle θ at the nth pitch and the n + 5th packing inclination angle θ are sequentially compared with the threshold value α, and if it is larger than even one place, it is discharged as defective. In this case, every 5 pitches, but any integer pitch may be used.
閾値αの値としては、パッキンを１周ひねった状態で、かしめ爪３の所定ピッチで測定した時の値を目安とすると良い。製品寸法、ピッチｐの間隔にもよるが、一例として５ピッチの場合で１５〜２３°程度の値となる。 As a value of the threshold value α, a value obtained by measuring at a predetermined pitch of the caulking claw 3 in a state where the packing is twisted once may be used as a guide. Although it depends on the product dimensions and the pitch p interval, as an example, the value is about 15 to 23 ° in the case of 5 pitches.
このようにして、２次元形状計測センサ４０を２台並べて、ローダ５０のモータを駆動させ、パッキン１７の上空８０ｍｍ程度の位置にて８００ｍｍ／Ｓ程度の速度で移動させる。移動中の所定位置毎（定ピッチ）にてパッキン１７の断面図を測定する。数値を制御装置に送り、演算部にてパッキン状態を検出しねじれているか否かを、所定の閾値αにて良否判定をさせる。 In this way, two two-dimensional shape measurement sensors 40 are arranged side by side, the motor of the loader 50 is driven, and moved at a speed of about 800 mm / S at a position of about 80 mm above the packing 17. A cross-sectional view of the packing 17 is measured at each predetermined position during movement (constant pitch). A numerical value is sent to the control device, and a pass / fail judgment is made based on a predetermined threshold value α to determine whether or not the packing state is detected by the calculation unit.
３ かしめ爪
４ 谷
１５ コアプレート
１６ タンク
１７ パッキン
３０ 熱交換器
３１ コア部
４０ ２次元形状計測センサ
５０ 駆動機構、ローダ
3 Caulking claw 4 Valley 15 Core plate 16 Tank 17 Packing 30 Heat exchanger 31 Core part 40 Two-dimensional shape measurement sensor 50 Drive mechanism, loader
Claims (3)
２次元形状計測センサ（４０）と、
該２次元形状計測センサ（４０）又は前記コアプレート（１５）のいずれか一方を、前記コアプレート（１５）の長手方向に相対的に移動させる駆動機構(５０)と、
前記パッキン（１７）のシール面の傾き角度を演算する演算部と
を具備するパッキンねじれ検出装置において、
前記２次元形状計測センサ（４０）が、前記コアプレート（１５）の長手方向に、前記かしめ爪（３）の所定ピッチ毎に、前記コアプレート（１５）、及び、前記パッキン（１７）の断面を計測して、
前記演算部が、前記断面の計測情報に基づいて、前記所定ピッチ毎に、前記コアプレート（１５）の傾き角度を差し引いた前記パッキン（１７）のシール面の傾き角度（θ）を算出して、所定の閾値と比較して良否判定を行うパッキンねじれ検出装置。 This is a packing twist detection device that detects the inclination angle of the sealing surface of the packing (17) when the packing (17) is disposed in the core plate (15) having the caulking claw (3) formed on the outer periphery. The packing twist detection device
A two-dimensional shape measurement sensor (40);
A drive mechanism (50) for moving either the two-dimensional shape measurement sensor (40) or the core plate (15) in the longitudinal direction of the core plate (15);
A packing torsion detection device comprising: a calculation unit that calculates an inclination angle of the seal surface of the packing (17);
The cross section of the core plate (15) and the packing (17) in the longitudinal direction of the core plate (15) at a predetermined pitch of the caulking claw (3). Measure
The calculation unit calculates an inclination angle (θ) of the seal surface of the packing (17) obtained by subtracting the inclination angle of the core plate (15) at each predetermined pitch based on the measurement information of the cross section. A packing torsion detection device that makes a pass / fail judgment in comparison with a predetermined threshold.
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