JP2003121373A - Method and apparatus for inspecting smoothed surface of article - Google Patents
Method and apparatus for inspecting smoothed surface of articleInfo
- Publication number
- JP2003121373A JP2003121373A JP2001312709A JP2001312709A JP2003121373A JP 2003121373 A JP2003121373 A JP 2003121373A JP 2001312709 A JP2001312709 A JP 2001312709A JP 2001312709 A JP2001312709 A JP 2001312709A JP 2003121373 A JP2003121373 A JP 2003121373A
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- Prior art keywords
- inspected
- article
- reference point
- displacement amount
- inspection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】この発明は、物品の平滑面の
検査方法及び装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for inspecting a smooth surface of an article.
【0002】[0002]
【従来の技術】例えば、包装用の壜あるいはPET等の
プラスチック容器にあっては、成形後そのストレート胴
部にラベルや印刷等の表示部が形成されることが多い。
このような場合に、該ストレート胴部に凹凸等があると
ラベルのシワ等の外観不良を発生するおそれがある。ま
た、この種の容器は一般にブロー(吹込)成形によって
成形されるのであるが、このブロー成形時に、金型に形
成された空気穴が詰まったりする場合には、金型への均
等な熱伝導が阻害されて部分的に冷却が不十分となって
成形品の胴部に凹凸欠点を作出する異常が発生する。こ
のような問題に対処するために、従来、次のような胴部
の平滑検査手段が提案されている。2. Description of the Related Art For example, in a packaging bottle or a plastic container such as PET, after molding, a straight body portion is often provided with a display portion such as a label or a print.
In such a case, if there is unevenness or the like on the straight body portion, there is a possibility that appearance defects such as wrinkles on the label may occur. In addition, this type of container is generally molded by blow molding, but if the air holes formed in the mold are clogged during this blow molding, uniform heat transfer to the mold is achieved. Is impaired and the cooling is partially inadequate, resulting in abnormalities that create uneven defects in the body of the molded product. In order to deal with such a problem, conventionally, the following body smoothness inspection means has been proposed.
【0003】例えば特開平8−114441号に開示さ
れる検査装置は、壜を回転(自転)させ、接触式センサ
ーによって胴部の表面変位を測定し、胴部の楕円度(最
大―最小差)を算出して、良否判定を行うものである。
しかしながら、この手段にあっては、接触式センサーが
配置された周方向位置のみの検査であるため、例えばラ
ベルが貼られる壜の高さ(縦)方向の胴部全域をカバー
することができない。また、測定はメカニカルな変位セ
ンサーを壜胴部に接触させて行うので、壜の回転時にセ
ンサーが成形金型の合わせ目などで成形されたわずかな
突部や段差でジャンプすることがあり、特に高速処理の
検査では正確な測定ができない。さらに、この従来技術
にあっては、楕円度で判定するものであるから、大きな
胴の凹みや膨らみしか検出できず、細かな凹凸や全体の
膨らみや凹みを検査することができない、などの問題点
を有していた。For example, in the inspection device disclosed in Japanese Patent Laid-Open No. 8-114441, a bottle is rotated (rotated) and the surface displacement of the body is measured by a contact type sensor, and the ellipticity (maximum-minimum difference) of the body is measured. Is calculated and the quality is judged.
However, in this means, since the inspection is performed only on the circumferential position where the contact type sensor is arranged, for example, it is not possible to cover the entire body in the height (vertical) direction of the bottle to which the label is attached. Also, because the mechanical displacement sensor is in contact with the bottle body for measurement, the sensor may jump at a slight protrusion or step formed at the seam of the mold when the bottle rotates, especially Accurate measurement cannot be performed by high-speed inspection. Further, in this conventional technique, since the determination is made based on the ellipticity, it is possible to detect only a large dent or bulge of the body, and it is not possible to inspect fine unevenness or the entire bulge or dent, and the like. Had a point.
【0004】[0004]
【発明が解決しようとする課題】この発明は、このよう
な問題に鑑み、非接触式で、検査範囲の制約を取り除
き、被検査物の移動時の変動に対しても正確な検査をす
ることができ、しかも被検査面における細かな凹凸か
ら、全体的な膨らみ及び凹みまで検出可能な物品の平滑
面の検査方法及び装置を提供するものである。SUMMARY OF THE INVENTION In view of the above problems, the present invention is a non-contact type, removes the restriction of the inspection range, and makes an accurate inspection even when the object to be inspected is moved. The present invention also provides a method and apparatus for inspecting a smooth surface of an article, which is capable of detecting even fine undulations on the surface to be inspected and bulges and depressions as a whole.
【0005】[0005]
【課題を解決するための手段】すなわち、請求項1の発
明は物品の平滑面の検査方法に係り、移動する被検査物
品(B)の移動方向(a)と交差する方向(b)に、前
記被検査物に対して第一基準点(CP1)及び第二基準
点(CP2)を設定するとともに、被検査面(F)に対
して前記第一基準点及び第二基準点を結ぶ線上に複数の
測定点(Pn)を設定し、前記被検物品の移動時(T
m)の前記測定点における前記被検査面の高さ方向の変
位量(Dnm)を前記第一基準点及び第二基準点を結ぶ
仮想基準直線(CL)との距離差として検出し、これら
と予め定められた設定値とを対比して前記被検査面の平
滑度の良否を判定することを特徴とする。That is, the invention according to claim 1 relates to a method for inspecting a smooth surface of an article, in a direction (b) intersecting a moving direction (a) of a moving inspected article (B), A first reference point (CP1) and a second reference point (CP2) are set for the object to be inspected, and on the line connecting the first reference point and the second reference point to the surface to be inspected (F). When a plurality of measurement points (Pn) are set and the article to be inspected is moved (T
The displacement amount (Dnm) in the height direction of the surface to be inspected at the measurement point of m) is detected as a distance difference from a virtual reference line (CL) connecting the first reference point and the second reference point, and It is characterized in that the quality of the smoothness of the surface to be inspected is judged by comparing with a predetermined set value.
【0006】請求項2の発明は、請求項1において、前
記平滑度の良否判定が、さらに、前記交差方向(b)に
おいて隣接する各測定点における変位量の差(Svn
m)と、前記移動方向(a)において隣接する移動前後
の各測定点における変位量の差(Scnm)を検出して
これらと予め定められた設定値とを対比して行われる物
品の平滑面の検査方法に係る。According to a second aspect of the present invention, in the first aspect, whether the smoothness is good or bad is determined by the difference (Svn) in the displacement amount between adjacent measurement points in the intersecting direction (b).
m) and the difference (Scnm) in the amount of displacement between adjacent measurement points before and after the movement in the movement direction (a) are detected, and these are compared with a predetermined set value to perform a smooth surface of the article. Pertaining to the inspection method of.
【0007】請求項3の発明は、物品の平滑面の検査装
置に係り、被検査面(F)を検査するために被検査物品
(B)を移動する移動手段と、移動する被検査物品の移
動方向(a)と交差する方向(b)に前記被検査物に対
して第一基準点(CP1)及び第二基準点(CP2)が
設定されているとともに前記被検査面(F)に対して前
記第一基準点及び第二基準点を結ぶ線上に複数の測定点
(Pn)が設定されていて、前記被検物品の移動時(T
m)の前記測定点における前記被検査面の高さ方向の変
位量(Dnm)を前記第一基準点及び第二基準点を結ぶ
仮想基準直線(CL)との距離差として検出する変位量
検出手段と、前記変位量検出手段によって検出された変
位量に基づき前記被検査面の平滑度の良否を判定する判
定手段を含むことを特徴とする。A third aspect of the present invention relates to an apparatus for inspecting a smooth surface of an article, comprising moving means for moving the inspected article (B) for inspecting the inspected surface (F), and moving the inspected article. A first reference point (CP1) and a second reference point (CP2) are set for the object to be inspected in a direction (b) intersecting the movement direction (a), and to the surface to be inspected (F). And a plurality of measurement points (Pn) are set on a line connecting the first reference point and the second reference point, and when the object to be inspected moves (T
Displacement amount detection for detecting a displacement amount (Dnm) in the height direction of the surface to be inspected at the measurement point of m) as a distance difference from a virtual reference straight line (CL) connecting the first reference point and the second reference point. And a determination unit that determines whether the smoothness of the surface to be inspected is good or bad based on the displacement amount detected by the displacement amount detection unit.
【0008】請求項4の発明は、請求項3において、前
記変位量検出手段が、前記被検査物品を撮像するカメラ
と、前記カメラによって撮像された画像の画像処理手段
を含む物品の平滑面の検査装置に係る。According to a fourth aspect of the present invention, in the third aspect, the displacement amount detecting means includes a camera for taking an image of the article to be inspected, and a smooth surface of the article including an image processing means for an image taken by the camera. Related to inspection equipment.
【0009】また、請求項5の発明は、請求項4におい
て、前記移動手段が、前記被検査物品を所定位置で回転
させる回転装置よりなり、前記カメラが前記被検査物品
の被検査面の周縁部を撮像するものである物品の平滑面
の検査装置に係る。The invention of claim 5 is the invention according to claim 4, wherein the moving means comprises a rotating device for rotating the article to be inspected at a predetermined position, and the camera is a peripheral edge of an inspected surface of the article to be inspected. The present invention relates to an apparatus for inspecting a smooth surface of an article, which is an image of a part.
【0010】さらに、請求項6の発明は、請求項3にお
いて、前記変位量検出手段が、前記被検査物品に対して
配置された複数の表面変位センサーを含む物品の平滑面
の検査装置に係る。Further, the invention of claim 6 relates to the inspection device of the smooth surface of an article according to claim 3, wherein the displacement amount detecting means includes a plurality of surface displacement sensors arranged with respect to the article to be inspected. .
【0011】[0011]
【発明の実施の形態】以下添付の図面に従ってこの発明
を詳細に説明する。図1はこの発明によって丸壜の平滑
面を検査する際における第一基準点ならびに第二基準点
及び複数の測定点を概念的に表した正面図、図2は図1
の各測定点における被検査面の高さ方向の変位量を概念
的に表した側面図、図3は角壜の平滑面を検査する際に
おける第一基準点ならびに第二基準点及び複数の測定点
を概念的に表した正面図、図4は図3の各測定点におけ
る被検査面の高さ方向の変位量を概念的に表した側面
図、図5はこの発明の検査装置の一例を表す概略平面
図、図6はその概略側面図、図7はこの発明の検査装置
の他の例を示す概略平面図である。DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below with reference to the accompanying drawings. 1 is a front view conceptually showing a first reference point, a second reference point and a plurality of measurement points when inspecting a smooth surface of a round bottle according to the present invention, and FIG.
3 is a side view conceptually showing the amount of displacement in the height direction of the surface to be inspected at each measurement point, FIG. 3 is a first reference point, a second reference point and a plurality of measurements when inspecting a smooth surface of a square bottle. 4 is a front view conceptually showing points, FIG. 4 is a side view conceptually showing the amount of displacement in the height direction of the surface to be inspected at each measurement point in FIG. 3, and FIG. 5 is an example of the inspection apparatus of the present invention. 6 is a schematic plan view showing the same, FIG. 6 is a schematic side view thereof, and FIG. 7 is a schematic plan view showing another example of the inspection apparatus of the present invention.
【0012】以下の実施例では、次の2つの被検査物品
B(B1,B2)が例示される。その一は、図1の上側
に示すようないわゆる丸壜B1で、その被検査面Fはそ
の胴部の連続円周面F1である。この丸壜B1にあって
は、検査時にはその円周方向に回転(自転)される。従
って、丸壜B1の移動方向a1は回転方向である。そし
て、他は、図3の上側に示すいわゆる角壜B2で、その
被検査面Fはその胴部の連続しない平面F2である。こ
の角壜B2は、検査時にはその面方向と平行に移動され
る。従って、角壜B2の移動方向a2は直線方向であるIn the following examples, the following two inspected articles B (B1, B2) are illustrated. One of them is a so-called round bottle B1 as shown on the upper side of FIG. 1, and the surface F to be inspected is a continuous circumferential surface F1 of the body. The round bottle B1 is rotated (rotated) in the circumferential direction during inspection. Therefore, the moving direction a1 of the round bottle B1 is the rotating direction. The others are so-called square bottles B2 shown on the upper side of FIG. This square bottle B2 is moved in parallel with the surface direction at the time of inspection. Therefore, the moving direction a2 of the square bottle B2 is a linear direction.
【0013】まず、請求項1の発明に係る物品の平滑面
の検査方法について説明する。この発明にあっては、図
1及び図3に示すように、移動する被検査物品B(B
1,B2)の移動方向a(a1,a2)と交差する方向
bに、前記被検査物Bに対して第一基準点CP1及び第
二基準点CP2が設定される。そして、前記被検査物B
の検査面F(F1,F2)に対して前記第一基準点CP
1及び第二基準点CP2を結ぶ線上に複数の測定点P
1,P2,P3,Pnが設定される。実施例では、丸壜
B1及び角壜B2とも、移動方向a(a1,a2)と交
差する方向bはいずれも図の上下方向(縦方向)であ
る。First, a method for inspecting a smooth surface of an article according to the first aspect of the invention will be described. In the present invention, as shown in FIG. 1 and FIG.
The first reference point CP1 and the second reference point CP2 for the inspection object B are set in the direction b intersecting the moving direction a (a1, a2) of (1, B2). Then, the inspection object B
Of the first reference point CP with respect to the inspection surface F (F1, F2) of
A plurality of measurement points P on the line connecting the first and second reference points CP2
1, P2, P3 and Pn are set. In the embodiment, in both the round bottle B1 and the square bottle B2, the direction b intersecting the moving direction a (a1, a2) is the vertical direction (vertical direction) in the drawing.
【0014】第一基準点CP1と第二基準点CP2は、
被検査物Bの被検査面F以外の任意の位置に設けられ、
好ましくは最大突部分で、実施例では壜胴部の上下にあ
るいわゆる壜同士が接触しあう位置であるコンタクトポ
イントに両基準点CP1,CP2が設けられている。測
定点P1,P2,P3,Pnは、前記第一基準点CP1
と第二基準点CP2を結ぶ線上に複数設けられる。各測
定点P1,P2,P3,Pnの間隔は、測定の精度等の
必要により適宜決定される。例えば実施例では被検査面
Fの縦方向に10mm間隔で設けられている。The first reference point CP1 and the second reference point CP2 are
It is provided at any position other than the inspected surface F of the inspected object B,
Both reference points CP1 and CP2 are provided at contact points, which are positions at which the so-called bottles in the upper and lower portions of the bottle body are in contact with each other, which are the maximum projecting portions. The measurement points P1, P2, P3 and Pn are the first reference points CP1.
And a plurality of second reference points CP2. The intervals between the respective measurement points P1, P2, P3, Pn are appropriately determined according to the need for measurement accuracy and the like. For example, in the embodiment, they are provided at intervals of 10 mm in the vertical direction of the surface F to be inspected.
【0015】そして、この検査方法では、図2及び図4
に図示したように、前記被検物品Bの移動時T(m)の
前記測定点P1,P2,P3,Pnにおける前記被検査
面Fの高さ方向の変位量D1,D2,D3,Dn(m)
が検出される。特に、この発明では、前記変位量Dn
(m)が、前記第一基準点CP1及び第二基準点CP2
を結ぶ仮想基準直線CLと前記測定点P1,P2,P
3,Pnとの距離差として検出される。このような距離
差の検出は、後述する装置発明で説明するように、カメ
ラ画像の画像処理あるいは表面変位センサーなどによっ
て行うことができる。Then, in this inspection method, as shown in FIGS.
As shown in FIG. 3, the displacement amounts D1, D2, D3, Dn (in the height direction of the surface F to be inspected at the measurement points P1, P2, P3 and Pn at the time of movement T (m) of the object B to be inspected. m)
Is detected. Particularly, in the present invention, the displacement amount Dn
(M) is the first reference point CP1 and the second reference point CP2
A virtual reference straight line CL connecting the points and the measurement points P1, P2, P
3, detected as a distance difference from Pn. The detection of such a distance difference can be performed by image processing of a camera image, a surface displacement sensor, or the like, as described in an apparatus invention described later.
【0016】この発明では、被検物品Bの移動時Tmの
前記測定点P1,P2,P3,Pnにおける前記被検査
面Fの高さ方向の変位量Dnmが、前記第一基準点CP
1及び第二基準点CP2を結ぶ仮想基準直線CLと前記
測定点P1,P2,P3,Pnとの距離差として検出さ
れることにより、移動時に被検物品Bのふらつきや位置
ずれ等にも対応することができ、正確な検査面の測定が
できる。In the present invention, the displacement amount Dnm in the height direction of the surface F to be inspected at the measurement points P1, P2, P3 and Pn at the time Tm when the object B to be inspected is moved is the first reference point CP.
By detecting as a distance difference between the virtual reference straight line CL connecting the first and second reference points CP2 and the measurement points P1, P2, P3, Pn, it is possible to cope with fluctuations and positional deviations of the article B to be inspected during movement. It is possible to perform accurate measurement of the inspection surface.
【0017】被検査面Fの高さ方向の変位量Dnmであ
る、第一基準点CP1及び第二基準点CP2を結ぶ仮想
基準直線CLと前記測定点P1,P2,P3,Pnとの
距離差は、次のようにして求められる。すなわち、第一
基準点CP1、第二基準点CP2、測定点Pnの各座標
(x、y)を求め、それぞれ、CP1(xa,ya)、
CP2(xb,yb)、Pn(xn,yn)とする。第
一基準点CP1及び第二基準点CP2を結ぶ仮想基準直
線CLは、次式で表される。The distance difference between the virtual reference line CL connecting the first reference point CP1 and the second reference point CP2, which is the displacement amount Dnm in the height direction of the surface F to be inspected, and the measurement points P1, P2, P3, Pn. Is calculated as follows. That is, the coordinates (x, y) of the first reference point CP1, the second reference point CP2, and the measurement point Pn are obtained, and CP1 (xa, ya), respectively.
Let CP2 (xb, yb) and Pn (xn, yn). A virtual reference straight line CL connecting the first reference point CP1 and the second reference point CP2 is expressed by the following equation.
【0018】[0018]
【数1】 [Equation 1]
【0019】仮想基準直線CLを基準として、式にお
いてy=ynを代入して、次式によりxを求め、次式
より距離Dn(つまり、xn−x)を求める。Using the virtual reference straight line CL as a reference, y = yn is substituted in the equation, x is obtained by the following equation, and the distance Dn (that is, xn-x) is obtained by the following equation.
【0020】[0020]
【数2】 [Equation 2]
【0021】このようにして、各測定点P1,P2,P
3,Pnにおける変位量Dnmを、移動方向に順次検出
すると、表1のようになる。ここで、表1において、T
1,T2,Tmは、適宜の移動時間(距離)とすること
ができる。実施例では、移動する壜体Bの移動方向aに
対して0.25秒毎に変位量を検出しており、物品Bの
被検査面Fについて約10mm間隔で検査を行ってい
る。In this way, the measurement points P1, P2, P
Table 1 shows displacement amounts Dnm at 3 and Pn sequentially detected in the moving direction. Here, in Table 1, T
1, T2 and Tm can be set to appropriate travel times (distances). In the embodiment, the displacement amount is detected every 0.25 seconds in the moving direction a of the moving bottle B, and the surface F to be inspected of the article B is inspected at intervals of about 10 mm.
【0022】[0022]
【表1】 [Table 1]
【0023】前記表1において検出された変位量Dnm
は、判定手段によって、予め定められた設定値と対比し
て、許容範囲(例えば、±0.2mm)内であれば
「良」、許容範囲外であれば「不可」として、前記被検
査面Fの平滑度の良否が判定される。例えば、Lmin
<Dnm<Lmax(Lminは最小値、Lmaxは最
大値)であれば「良」、この範囲外であれば「不可」と
する。これによって、被検査面Fの各測定点における凹
凸を検査し、これにより平滑度の良否を検査することが
できる。Displacement amount Dnm detected in Table 1 above
Is judged to be “good” if it is within an allowable range (for example, ± 0.2 mm) and “not possible” if it is outside the allowable range by comparing with a preset value by the judging means. Whether the smoothness of F is good or bad is determined. For example, Lmin
If <Dnm <Lmax (Lmin is the minimum value and Lmax is the maximum value), it is “good”, and if it is out of this range, it is “impossible”. As a result, the unevenness at each measurement point on the surface F to be inspected can be inspected, and thus the quality of the smoothness can be inspected.
【0024】次に、請求項2の発明は、請求項1におい
て、前記平滑度の良否判定が、さらに、前記交差方向b
において隣接する各測定点(例えばP1とP2、P2と
P3)における変位量の差Svnmと、前記移動方向a
において隣接する移動前後の各測定点(例えばPnの移
動方向に隣接す位置T1とT2、T2とT3)における
変位量の差Scnmを検出してこれらと予め定められた
設定値とを対比して行うものである。[0024] Next, the invention of claim 2 is the same as in claim 1, wherein the pass / fail judgment of the smoothness is further made by the cross direction b.
At the measurement points (eg, P1 and P2, P2 and P3) adjacent to each other in Svnm,
In, the difference Scnm of the displacement amount at each measurement point before and after the adjacent movement (for example, the positions T1 and T2, T2 and T3 which are adjacent to each other in the movement direction of Pn) is detected, and these are compared with a predetermined set value. It is something to do.
【0025】すなわち、次表2に示すように、前記表1
に示した変位量Dnmから、交差方向bにおいて隣接す
る各測定点における変位量の差Svnm(つまり、│D
nm−D(n+1)m│)が求められる。That is, as shown in Table 2 below,
From the displacement amount Dnm shown in Fig. 2, the difference Svnm (that is, | D
nm-D (n + 1) m |) is calculated.
【0026】[0026]
【表2】 [Table 2]
【0027】同様に、次表3に示すように、前記表1に
示した変位量Dnmから、移動方向aにおいて隣接する
移動前後の各測定点における変位量の差Scnm(つま
り│Dnm−Dn(m+1)│)が求められる。Similarly, as shown in Table 3 below, from the displacement amount Dnm shown in Table 1 above, a displacement amount difference Scnm (that is, | Dnm-Dn ( m + 1) |) is required.
【0028】[0028]
【表3】 [Table 3]
【0029】前記表2及び3で求められた変位量の差S
vnm、Scnmは、判定手段によって、予め定められ
た設定値と対比して、許容範囲(例えば、0.2mm)
内であれば「良」、許容範囲外であれば「不可」とし
て、前記被検査面Fの平滑度の良否が判定される。例え
ば、Svnm<Lv(Lvは最大値)、Scnm<Lc
(Lcは最大値)であれば「良」、これ以上であれば
「不可」とする。これによって、被検査面Fの各測定点
の交差方向及び移動方向の隣接部における凹凸を検査
し、これによってより細かな平滑度の良否を検査するこ
とができる。The difference S between the displacements obtained in Tables 2 and 3 above
vnm and Scnm are compared with a preset value by the determination means, and are within an allowable range (for example, 0.2 mm).
If it is within the range, it is judged as “good”, and if it is out of the allowable range, it is judged as “impossible” and the quality of the smoothness of the surface F to be inspected is judged. For example, Svnm <Lv (Lv is the maximum value), Scnm <Lc
If (Lc is the maximum value), it is "good", and if it is more than this, "not good". Accordingly, it is possible to inspect the unevenness in the adjacent portion in the intersecting direction and the moving direction of each measurement point on the surface F to be inspected, and thereby to inspect the fineness of the smoothness.
【0030】次に、図5ないし図7に従って、装置発明
について説明する。請求項3の発明は、被検査面Fを検
査するために被検査物品Bを移動する移動手段10と、
移動する被検査物品の移動方向aと交差する方向bに前
記被検査物に対して第一基準点CP1及び第二基準点C
P2が設定されているとともに前記被検査面(F)に対
して前記第一基準点及び第二基準点を結ぶ線上に複数の
測定点Pnが設定されていて、前記被検物品の移動時T
mの前記測定点における前記被検査面の高さ方向の変位
量Dnmを前記第一基準点及び第二基準点を結ぶ仮想基
準直線CLとの距離差として検出する変位量検出手段2
0と、前記変位量検出手段によって検出された変位量に
基づき前記被検査面の平滑度の良否を判定する判定手段
30を含む。Next, the device invention will be described with reference to FIGS. According to the invention of claim 3, a moving means 10 for moving the inspected article B in order to inspect the inspected surface F,
A first reference point CP1 and a second reference point C with respect to the object to be inspected in a direction b intersecting the moving direction a of the moving object to be inspected.
P2 is set, and a plurality of measurement points Pn are set on the line connecting the first reference point and the second reference point with respect to the surface (F) to be inspected.
A displacement amount detecting means 2 for detecting a displacement amount Dnm in the height direction of the surface to be inspected at the measurement point of m as a distance difference from a virtual reference straight line CL connecting the first reference point and the second reference point.
0, and a judging means 30 for judging whether the smoothness of the surface to be inspected is good or bad on the basis of the displacement amount detected by the displacement amount detecting means.
【0031】まず図5及び図6の例は、前記丸壜B1の
検査について好適な例で、請求項4の発明として規定し
たように、前記変位量検出手段20が、前記被検査物品
を撮像するカメラ21と、前記カメラ21によって撮像
された画像の画像処理手段22を含む。また、この例で
は、さらに、請求項5の発明として規定したように、前
記移動手段10が、前記被検査物品B1を所定検査位置
55で回転させる回転装置11よりなり、前記カメラ2
1が、図5の平面図のように被検査物品B1の被検査面
の周縁部を撮像するものに係る。First, the examples of FIGS. 5 and 6 are suitable examples for the inspection of the round bottle B1, and as defined in the invention of claim 4, the displacement amount detecting means 20 images the inspected article. The camera 21 and the image processing means 22 for the image captured by the camera 21 are included. Further, in this example, further, as defined as the invention of claim 5, the moving means 10 comprises a rotating device 11 for rotating the inspected article B1 at a predetermined inspection position 55, and the camera 2
1 relates to the one for imaging the peripheral portion of the inspected surface of the inspected article B1 as in the plan view of FIG.
【0032】図5及び図6において、符号50は被検査
物品である丸壜B1を搬入及び搬出するコンベア装置、
51は丸壜B1を検査位置55に取り込むために間欠回
転するインデックスホイル(スターホイル)、54は検
査用の照明(光源)、56及び57は丸壜B1の外周ガ
イド部材である。回転装置11は、検査位置55で丸壜
B1の胴部に接触して回転させる回転ローラで、その駆
動機構(図示省略)は公知のものである。また、被検査
物品B1を撮像するカメラ21は、例えば公知のCCD
カメラで、画像処理手段22及び判定手段30は公知の
コンピュータ装置によって演算制御される。符号58
は、判定手段30からの信号によって、不良物品を排除
するリジェクト装置である。In FIGS. 5 and 6, reference numeral 50 designates a conveyor device for loading and unloading the round bottle B1 as the article to be inspected.
Reference numeral 51 is an index wheel (star wheel) that rotates intermittently to take the round bottle B1 into the inspection position 55, 54 is an illumination (light source) for inspection, and 56 and 57 are outer peripheral guide members of the round bottle B1. The rotating device 11 is a rotating roller that rotates in contact with the body of the round bottle B1 at the inspection position 55, and its drive mechanism (not shown) is known. The camera 21 for picking up an image of the article B1 to be inspected is, for example, a known CCD.
In the camera, the image processing means 22 and the determination means 30 are arithmetically controlled by a known computer device. Reference numeral 58
Is a reject device that eliminates defective articles by a signal from the determination means 30.
【0033】図7の例は、図示のように前記角壜B2の
検査について好適な例で、請求項6の発明として規定し
たように、前記変位量検出手段20が、前記被検査物品
に対して配置された複数の表面変位センサー25(25
a、25b、25n。なお、図4参照)を含む装置に係
る。表面変位センサー25(25a、25b、25n)
はレーザ光線方式等のものが広く市販されている。符号
26は表面変位センサー25(25a、25b、25
n)からの信号を演算し処理するコンピュータでであ
る。The example of FIG. 7 is a suitable example for the inspection of the square bottle B2 as shown in the figure, and as defined as the invention of claim 6, the displacement amount detecting means 20 applies to the article to be inspected. Surface displacement sensors 25 (25
a, 25b, 25n. Note that the present invention relates to an apparatus including (see FIG. 4). Surface displacement sensor 25 (25a, 25b, 25n)
The laser beam method and the like are widely marketed. Reference numeral 26 is a surface displacement sensor 25 (25a, 25b, 25
It is a computer that calculates and processes the signal from n).
【0034】図7において、被検査物品の角壜B2は移
動手段10であるコンベア装置12によって順次検査位
置65に送り込まれる。符号61は角壜B2の検査姿勢
を規制するための位置規制ローラ、62は同じく検査位
置65で角壜B2の位置を正確に保持する位置規制ガイ
ド、63は検査タイミング用センサー、64は判定手段
30からの信号によって、不良物品を排除するリジェク
ト装置、66はその排出部である。In FIG. 7, the square bottle B2 of the article to be inspected is sequentially sent to the inspection position 65 by the conveyor device 12 which is the moving means 10. Reference numeral 61 is a position regulation roller for regulating the inspection attitude of the square bottle B2, 62 is a position regulation guide for accurately holding the position of the square bottle B2 at the inspection position 65, 63 is an inspection timing sensor, and 64 is a determination means. A rejecting device 66 for rejecting defective articles in response to a signal from 30 is a discharging portion thereof.
【0035】[0035]
【発明の効果】以上図示し説明したように、この発明に
よれば、被検査物品に対して非接触式であるから、検査
範囲の制約がなくなり、被検査面のあらゆる部分の検査
が可能となった。また、従来のような物体の回転時等に
わずかな突部や段差でジャンプして検査の精度が低下す
るようなこともなく、確実に高速で検査ができるように
なった。As shown and described above, according to the present invention, since it is a non-contact type with respect to the article to be inspected, there is no restriction on the inspection range, and it is possible to inspect any part of the surface to be inspected. became. In addition, it is possible to reliably perform the inspection at a high speed without causing a drop in the accuracy of the inspection due to a slight protrusion or step when the object is rotated as in the conventional case.
【0036】特に、この発明にあっては、被検査物品に
対して第一基準点及び第二基準点を設定するとともに、
この基準点の延長線上の前記被検査面に対して複数の測
定点を設定し、被検物品の移動時の前記測定点における
前記被検査面の高さ方向の変位量を前記第一基準点及び
第二基準点を結ぶ仮想基準直線との距離差として検出
し、これによって被検査面の平滑度の良否を判定するよ
うにしたものであるから、被検査物品の移動時のふらつ
きや位置ずれが生じても正確な測定が可能である。Particularly, in the present invention, the first reference point and the second reference point are set for the article to be inspected, and
A plurality of measurement points are set with respect to the surface to be inspected on the extension line of the reference point, and the displacement amount in the height direction of the surface to be inspected at the measurement point when the object to be inspected is moved is the first reference point. And the distance from the virtual reference straight line connecting the second reference points, and the quality of the smoothness of the surface to be inspected is determined by this, so that the fluctuation or displacement of the article to be inspected during movement is detected. Accurate measurement is possible even if.
【0037】さらに、被検査面の高さ方向の変位量を移
動方向及びこれと直交する方向の隣接する各測定点と対
比してその変位量の差を求め、この数値によってより細
かな凹凸や全体の膨らみや凹みを検査することが可能に
なるなど、この発明の効果には甚大なものがある。Further, the displacement amount in the height direction of the surface to be inspected is compared with each adjacent measuring point in the moving direction and the direction orthogonal thereto, and the difference in the displacement amount is obtained. The effect of the present invention is enormous, for example, it becomes possible to inspect the entire bulge and dent.
【図1】この発明によって丸壜の平滑面を検査する際に
おける第一基準点ならびに第二基準点及び複数の測定点
を概念的に表した正面図である。FIG. 1 is a front view conceptually showing a first reference point, a second reference point and a plurality of measurement points when inspecting a smooth surface of a round bottle according to the present invention.
【図2】図1の各測定点における被検査面の高さ方向の
変位量を概念的に表した側面図である。FIG. 2 is a side view conceptually showing the amount of displacement in the height direction of the surface to be inspected at each measurement point in FIG.
【図3】角壜の平滑面を検査する際における第一基準点
ならびに第二基準点及び複数の測定点を概念的に表した
正面図である。FIG. 3 is a front view conceptually showing a first reference point, a second reference point, and a plurality of measurement points when inspecting a smooth surface of a square bottle.
【図4】図3の各測定点における被検査面の高さ方向の
変位量を概念的に表した側面図である。FIG. 4 is a side view conceptually showing the amount of displacement in the height direction of the surface to be inspected at each measurement point in FIG.
【図5】この発明の検査装置の一例を表す概略平面図で
ある。FIG. 5 is a schematic plan view showing an example of the inspection apparatus of the present invention.
【図6】その概略側面図である。FIG. 6 is a schematic side view thereof.
【図7】この発明の検査装置の他の例を示す概略平面図
である。FIG. 7 is a schematic plan view showing another example of the inspection apparatus of the present invention.
10 移動手段 20 変位量検出手段 30 判定手段 B(B1,B2) 被検査物品 F(F1,F2) 被検査面 CP1 第一基準点 CP2 第二基準点 P 測定点 10 means of transportation 20 Displacement amount detecting means 30 Judgment means B (B1, B2) Inspected article F (F1, F2) Inspection surface CP1 first reference point CP2 Second reference point P measurement point
───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 2F065 AA49 FF04 JJ19 JJ26 MM04 PP11 SS04 TT03 2F069 AA60 BB40 GG04 GG07 GG58 HH09 HH30 JJ17 PP06 2G051 AA14 AB07 CA03 CA07 CB02 DA01 DA08 EA11 EA12 EB01 ─────────────────────────────────────────────────── ─── Continued front page F term (reference) 2F065 AA49 FF04 JJ19 JJ26 MM04 PP11 SS04 TT03 2F069 AA60 BB40 GG04 GG07 GG58 HH09 HH30 JJ17 PP06 2G051 AA14 AB07 CA03 CA07 CB02 DA01 DA08 EA11 EA12 EB01
Claims (6)
(a)と交差する方向(b)に、前記被検査物に対して
第一基準点(CP1)及び第二基準点(CP2)を設定
するとともに、被検査面(F)に対して前記第一基準点
及び第二基準点を結ぶ線上に複数の測定点(Pn)を設
定し、前記被検物品の移動時(Tm)の前記測定点にお
ける前記被検査面の高さ方向の変位量(Dnm)を前記
第一基準点及び第二基準点を結ぶ仮想基準直線(CL)
との距離差として検出し、これらと予め定められた設定
値とを対比して前記被検査面の平滑度の良否を判定する
ことを特徴とする物品の平滑面の検査方法。1. A first reference point (CP1) and a second reference point (CP2) with respect to the inspection object in a direction (b) intersecting a moving direction (a) of a moving inspection object (B). And a plurality of measurement points (Pn) are set on a line connecting the first reference point and the second reference point with respect to the surface (F) to be inspected, and when the article to be inspected is moved (Tm). A virtual reference straight line (CL) connecting the displacement amount (Dnm) in the height direction of the surface to be inspected at the measurement point, connecting the first reference point and the second reference point.
Is detected as a difference in distance between the surface of the article and the predetermined value, and the quality of the smoothness of the surface to be inspected is determined by comparing these values with a preset value.
定が、さらに、前記交差方向(b)において隣接する各
測定点における変位量の差(Svnm)と、前記移動方
向(a)において隣接する移動前後の各測定点における
変位量の差(Scnm)を検出してこれらと予め定めら
れた設定値とを対比して行われる物品の平滑面の検査方
法。2. The smoothness determination according to claim 1, further comprising determining whether the difference in displacement amount (Svnm) between adjacent measurement points in the intersecting direction (b) is the same as the difference in displacement direction (a). A method for inspecting a smooth surface of an article, which is performed by detecting a difference (Scnm) in displacement amount at each measurement point before and after the movement and comparing these with a predetermined set value.
物品(B)を移動する移動手段と、 移動する被検査物品の移動方向(a)と交差する方向
(b)に前記被検査物に対して第一基準点(CP1)及
び第二基準点(CP2)が設定されているとともに前記
被検査面(F)に対して前記第一基準点及び第二基準点
を結ぶ線上に複数の測定点(Pn)が設定されていて、
前記被検物品の移動時(Tm)の前記測定点における前
記被検査面の高さ方向の変位量(Dnm)を前記第一基
準点及び第二基準点を結ぶ仮想基準直線(CL)との距
離差として検出する変位量検出手段と、 前記変位量検出手段によって検出された変位量に基づき
前記被検査面の平滑度の良否を判定する判定手段を含む
ことを特徴とする物品の平滑面の検査装置。3. A moving means for moving the inspected article (B) for inspecting the inspected surface (F), and the object to be inspected in a direction (b) intersecting the moving direction (a) of the inspected object. A first reference point (CP1) and a second reference point (CP2) are set for the inspection object, and on the line connecting the first reference point and the second reference point to the surface to be inspected (F). Multiple measurement points (Pn) are set,
A displacement amount (Dnm) in the height direction of the surface to be inspected at the measurement point when the object to be inspected is moved (Tm) is defined as a virtual reference straight line (CL) connecting the first reference point and the second reference point. Displacement amount detecting means for detecting as a distance difference, the smooth surface of the article characterized by including a determining means for determining the quality of the smoothness of the surface to be inspected based on the displacement amount detected by the displacement amount detecting means Inspection device.
が、前記被検査物品を撮像するカメラと、前記カメラに
よって撮像された画像の画像処理手段を含む物品の平滑
面の検査装置。4. The inspection device for the smooth surface of an article according to claim 3, wherein the displacement amount detecting means includes a camera for capturing an image of the inspected article and an image processing means for an image captured by the camera.
記被検査物品を所定位置で回転させる回転装置よりな
り、前記カメラが前記被検査物品の被検査面の周縁部を
撮像するものである物品の平滑面の検査装置。5. The moving device according to claim 4, wherein the moving means comprises a rotating device for rotating the inspected article at a predetermined position, and the camera captures an image of a peripheral portion of an inspected surface of the inspected article. Inspection device for smooth surface of articles.
が、前記被検査物品に対して配置された複数の表面変位
センサーを含む物品の平滑面の検査装置。6. The apparatus for inspecting a smooth surface of an article according to claim 3, wherein the displacement amount detecting means includes a plurality of surface displacement sensors arranged with respect to the article to be inspected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2001312709A JP2003121373A (en) | 2001-10-10 | 2001-10-10 | Method and apparatus for inspecting smoothed surface of article |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001312709A JP2003121373A (en) | 2001-10-10 | 2001-10-10 | Method and apparatus for inspecting smoothed surface of article |
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Publication Number | Publication Date |
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JP2003121373A true JP2003121373A (en) | 2003-04-23 |
Family
ID=19131317
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Application Number | Title | Priority Date | Filing Date |
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JP2001312709A Pending JP2003121373A (en) | 2001-10-10 | 2001-10-10 | Method and apparatus for inspecting smoothed surface of article |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013120176A (en) * | 2011-12-09 | 2013-06-17 | Tadano Ltd | System for notifying height information of object around hoisting load |
-
2001
- 2001-10-10 JP JP2001312709A patent/JP2003121373A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013120176A (en) * | 2011-12-09 | 2013-06-17 | Tadano Ltd | System for notifying height information of object around hoisting load |
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