JPS632335B2 - - Google Patents

Info

Publication number
JPS632335B2
JPS632335B2 JP56023283A JP2328381A JPS632335B2 JP S632335 B2 JPS632335 B2 JP S632335B2 JP 56023283 A JP56023283 A JP 56023283A JP 2328381 A JP2328381 A JP 2328381A JP S632335 B2 JPS632335 B2 JP S632335B2
Authority
JP
Japan
Prior art keywords
sheet
different
detection point
output
detector
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.)
Expired
Application number
JP56023283A
Other languages
Japanese (ja)
Other versions
JPS57136147A (en
Inventor
Tsutomu Yashiro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rigaku Denki Co Ltd
Original Assignee
Rigaku Denki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rigaku Denki Co Ltd filed Critical Rigaku Denki Co Ltd
Priority to JP56023283A priority Critical patent/JPS57136147A/en
Publication of JPS57136147A publication Critical patent/JPS57136147A/en
Publication of JPS632335B2 publication Critical patent/JPS632335B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/16—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the material being a moving sheet or film
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Toxicology (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Description

【発明の詳細な説明】 本発明はＸ線を用いたシート状体の内部の異相
を追跡するシート状体の内部異相端追跡装置に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an internal different phase edge tracking device for a sheet-like body that uses X-rays to track different phases inside the sheet-like body.

質の異なるシートの端面を接合して、両平面を
プラスチツクシートでさらに被覆するシート材が
量産されている。また導体箔や、導線をシート内
に埋め込んだシート状体も量産されている。この
ように内部で異つた質の物体が接合されている境
界領域を以下内部異相端または異相端領域という
ことにする。これ等のシート状体は表面は内包さ
れている物体に係らず同一であつて、目視により
これを判別することは困難である。そのようなシ
ート状体の内部異相端に沿つてシートを切断して
使用する場合とか内部異相端の状態を検査したい
という要請がある。 Sheet materials are mass-produced in which the end surfaces of sheets of different quality are joined together and both surfaces are further covered with a plastic sheet. Also, conductive foils and sheet-like bodies with conductive wires embedded within the sheets are also mass-produced. The boundary area in which objects of different qualities are joined in this manner will hereinafter be referred to as an internal heterogeneous edge or a heterogeneous edge area. These sheet-like bodies have the same surface regardless of the object contained therein, and it is difficult to distinguish them visually. There is a demand for inspecting the state of the internal different-phase edge when the sheet is cut along the internal different-phase edge of such a sheet-like body for use.

本発明の目的は前述した外部から目視により判
断できない異相端を連続的に追跡するのに適した
透過Ｘ線を用いたシート状体の内部異相端追跡装
置を提供することにある。 An object of the present invention is to provide an internal different-phase edge tracking device for a sheet-like body using transmitted X-rays, which is suitable for continuously tracing the above-mentioned different-phase edge that cannot be determined visually from the outside.

前記目的を達成するために本発明によるシート
状体の内部異相端の追跡装置は、シート状体の送
り方向に直角な線上で間隔を保つた二つの固定点
の透過Ｘ線をそれぞれ検出する一対の固定点検出
器と、前記固定点間で検出点を可変にすることが
できる検出点可変検出器と、前記一対の固定点検
出器出力の平均化値と前記検出点可変検出器出力
を比較して差の出力を送出する判別回路と、前記
判別回路出力により前記可変検出点を前記差が零
となる方向に移動させる駆動回路とを含み、前記
可変検出点でシート状体の異相端を追跡するよう
に構成してある。 In order to achieve the above object, the tracking device for the internal different phase edge of a sheet-shaped body according to the present invention includes a pair of fixed points that respectively detect transmitted X-rays at two fixed points spaced apart on a line perpendicular to the feeding direction of the sheet-shaped body. a fixed point detector, a variable detection point detector whose detection point can be made variable between the fixed points, and a comparison between the average value of the outputs of the pair of fixed point detectors and the output of the variable detection point detector. and a drive circuit that uses the output of the discrimination circuit to move the variable detection point in a direction in which the difference becomes zero, and detects an out-of-phase end of the sheet-like body at the variable detection point. It is configured to be tracked.

上記構成によれば自動的に異相端の検出が可能
となり、本発明の目的は完全に達成できる。 According to the above configuration, it is possible to automatically detect different phase ends, and the object of the present invention can be completely achieved.

以下、図面等を参照して本発明による装置をさ
らに詳しく説明する。 Hereinafter, the apparatus according to the present invention will be explained in more detail with reference to the drawings and the like.

第１図は本発明による装置で内部異相端追跡の
対象となるシート状体の例を示す斜視図である。
図において２，４は内包されているシート、１，
３は上下の被覆である。同図においてＣは異相端
を含む部分である。２と４はＸ線吸収係数が異な
る物質である。なお、２または４のいずれか一方
がなく、４または２のみが断続的に埋設されてい
るようなシート状体の埋設されているシートの異
相端の検出にも応用できる。 FIG. 1 is a perspective view showing an example of a sheet-like body to be subjected to internal different-phase edge tracking in the apparatus according to the present invention.
In the figure, 2 and 4 are contained sheets, 1,
3 is the upper and lower coverings. In the figure, C is a portion including an out-of-phase end. 2 and 4 are substances with different X-ray absorption coefficients. It should be noted that the present invention can also be applied to detecting the different-phase edge of a buried sheet of a sheet-like body in which either 2 or 4 is missing and only 4 or 2 is intermittently buried.

第２図は本発明による装置の実施例を示す略図
である。検査対象シート６は図中紙面の上方向か
ら下に向つて紙面に垂直に連続的に搬送される。
搬送手段は送りローラ等の従来良く知られている
装置で足りるので省略してある。シート６の一方
側、例えば上側に設けられているＸ線源からのＸ
線はスリツト８，１０，１２により送行中のシー
ト６の表面にシートの送行方向に直交する方向に
沿つて３ケ所に照射される。シート６の他方側に
は対応するスリツト９，１１，１３が設けられて
いる。このスリツトは透過Ｘ線のみを受け入れる
役割を持つている。これ等のスリツトにはＸ線検
出器１４，１５，１６が対応させられており、各
検出器は常時透過Ｘ線を受けて電流に変換し出力
している。なお、８，９，１４および１２，１
３，１６の対は固定的に設けられているが、１
０，１１，１５の対は前記各対間で移動可能に設
けられている。 FIG. 2 is a schematic representation of an embodiment of the device according to the invention. The sheet 6 to be inspected is continuously conveyed perpendicularly to the paper from the top to the bottom of the paper in the figure.
The conveyance means is omitted because a conventionally well-known device such as a feed roller is sufficient. X from an X-ray source provided on one side of the sheet 6, for example on the upper side
The line is irradiated by the slits 8, 10, and 12 onto the surface of the sheet 6 being fed at three locations along a direction perpendicular to the sheet feeding direction. Corresponding slits 9, 11, 13 are provided on the other side of the sheet 6. This slit has the role of accepting only transmitted X-rays. X-ray detectors 14, 15, and 16 are associated with these slits, and each detector constantly receives transmitted X-rays, converts them into current, and outputs the current. In addition, 8, 9, 14 and 12, 1
Pairs 3 and 16 are fixedly provided, but 1
The pairs 0, 11, and 15 are provided movably between the pairs.

第３図にスリツト８，１０，１２とシート６の
平面的位置関係を略図示してある。スリツト８を
介してシート６を照射するＸ線は第１図のＢの領
域、スリツト１０を介してシート６を照射するＸ
線はＣの領域、スリツト１２を介してシート６を
照射するＸ線はＡの領域をそれぞれ照射し、シー
ト６は矢印の示す右方向に搬送されている。表面
層のシート１，３の吸収係数μ1、μ3、内部層のシ
ート２，４の吸収係数をμ2、μ4とする。今μ2＜μ4
とすると、第１図に示すＡの領域の全体としての
合成された吸収係数μA＝ｆ（μ1、μ2、μ3）、Ｂの領
域ではμB＝ｆ（μ1、μ3、μ4）、接合領域ＣではμC
＝
ｆ（μ1、μ2、μ3、μ4）となり、それ等の間にはμA
＜μC＜μBの関係が成立する。検出器１４，１５，
１６の出力I1，I2，I3間にはI3＞I2＞I1の関係が成
立している。すなわち、総合的な吸収係数が最も
小である(A)の部分の透過Ｘ線の検出器の検出出力
電流であるI3がもつとも大である。第５図にシー
ト６の搬送方向に直交する方向を横軸にして前記
各電流を示している。各検出出力電流は判別回路
１７に入力される。 FIG. 3 schematically shows the planar positional relationship between the slits 8, 10, 12 and the sheet 6. The X-rays irradiating the sheet 6 through the slit 8 are in the area B in FIG.
The line irradiates the area C, and the X-rays irradiating the sheet 6 through the slit 12 irradiates the area A, and the sheet 6 is being conveyed to the right as indicated by the arrow. Let the absorption coefficients of the sheets 1 and 3 of the surface layer be μ 1 and μ 3 , and the absorption coefficients of the sheets 2 and 4 of the inner layer be μ 2 and μ 4 . Now μ 2 < μ 4
Then, the combined absorption coefficient μ A =f(μ 1 , μ 2 , μ 3 ) for the region A shown in FIG. 1, and μ B =f(μ 1 , μ 3 , μ 3 ) for the region B shown in FIG. μ 4 ), μ C in junction region C
=
f(μ 1 , μ 2 , μ 3 , μ 4 ), and between them μ A
The relationship <μ C <μ B holds true. Detectors 14, 15,
A relationship of I 3 > I 2 > I 1 holds between the outputs I 1 , I 2 , and I 3 of No. 16. That is, I3 , which is the detection output current of the detector for the transmitted X-rays in the part (A) where the overall absorption coefficient is the smallest, is the largest. In FIG. 5, the above-mentioned currents are shown with the horizontal axis in a direction perpendicular to the conveyance direction of the sheet 6. Each detected output current is input to the discrimination circuit 17.

第４図に判別回路１７の実施例を示してある。
この判別回路１７は、第１図に示した対象を予定
し、出力I1とI3の相加平均的な値とI2の値の差を
出力として発生するように構成したものである。
検出器１４，１６の出力は判別回路１７の平均化
回路１７ａに入力される。この平均化回路１７ａ
の出力と、前記検出器１５の出力は、一致判別回
路１７ｂで比較され、その出力つまり差分は駆動
回路１８に接続される。駆動回路は前述したスリ
ツト１０，１１をシート６の搬送方向に直角方向
に前記差分の出力が零となるように移動させる。
つまりこの実施例装置は、スリツト１０，１１が
常に異相端上に存在するような負帰還系を形成し
ている。このスリツト１０，１１の位置をシート
６上にマークペン等で自動的に印を施せば異相端
のトレースが行なわれることになる。なお、第４
図の平均化回路においては必ずしもI1とI3の相加
平均によらず（I1＋I3）／ｎのｎは実験的に任意
に設定できるものである。スリツト８，１０，１
２からの照射Ｘ線の強度が異る場合もあり得るこ
とからI1，I2，I3に任意の重みづけをすることも
可能である。 An embodiment of the discrimination circuit 17 is shown in FIG.
This discrimination circuit 17 is intended for the target shown in FIG. 1 and is configured to generate the difference between the arithmetic average value of the outputs I 1 and I 3 and the value of I 2 as an output.
The outputs of the detectors 14 and 16 are input to the averaging circuit 17a of the discrimination circuit 17. This averaging circuit 17a
The output of the detector 15 is compared with the output of the detector 15 by a coincidence determination circuit 17b, and the output, that is, the difference, is connected to a drive circuit 18. The drive circuit moves the aforementioned slits 10 and 11 in a direction perpendicular to the conveying direction of the sheet 6 so that the output of the difference becomes zero.
In other words, the device of this embodiment forms a negative feedback system in which the slits 10 and 11 are always located on the out-of-phase end. If the positions of the slits 10 and 11 are automatically marked on the sheet 6 with a marking pen or the like, the different phase ends can be traced. In addition, the fourth
In the averaging circuit shown in the figure, n of (I 1 +I 3 )/n is not necessarily based on the arithmetic average of I 1 and I 3 but can be arbitrarily set experimentally. Slit 8, 10, 1
Since the intensity of the irradiated X-rays from 2 may differ, it is also possible to give arbitrary weighting to I 1 , I 2 , and I 3 .

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明による装置の対象となるシート
の一例を示す拡大図、第２図は本発明による装置
の実施例を示す略図、第３図は一方側のスリツト
とシートの位置関係を示す平面図、第４図は判別
回路の実施例を示すブロツク図、第５図は検出器
出力を説明するためのグラフである。 １，３……表面層、２，４……内部層、６……
検査対象シート、７……Ｘ線源、８，９，１０，
１１，１２，１３……スリツト、１４，１５，１
６……Ｘ線検出器、１７……判別回路、１８……
駆動回路。 FIG. 1 is an enlarged view showing an example of a sheet to which the apparatus according to the present invention is applied, FIG. 2 is a schematic view showing an embodiment of the apparatus according to the present invention, and FIG. 3 is a diagram showing the positional relationship between the slit on one side and the sheet. A plan view, FIG. 4 is a block diagram showing an embodiment of the discrimination circuit, and FIG. 5 is a graph for explaining the detector output. 1, 3... surface layer, 2, 4... internal layer, 6...
Inspection target sheet, 7...X-ray source, 8, 9, 10,
11, 12, 13...slit, 14, 15, 1
6... X-ray detector, 17... Discrimination circuit, 18...
drive circuit.

Claims (1)

【特許請求の範囲】[Claims] １ シート状体の送り方向に直角な線上で間隔を
保つた二つの固定点の透過Ｘ線をそれぞれ検出す
る一対の固定点検出器と、前記固定点間で検出点
を可変にすることができる検出点可変検出器と、
前記一対の固定点検出器出力の平均化値と前記検
出点可変検出器出力を比較して差の出力を送出す
る判別回路と、前記判別回路出力により、前記可
変検出点を前記差が零となる方向に移動させる駆
動回路を含み、前記可変検出点でシート状体の異
相端を追跡するように構成したシート状体の内部
異相端の追跡装置。1. A pair of fixed point detectors each detecting transmitted X-rays at two fixed points spaced apart on a line perpendicular to the feeding direction of the sheet, and the detection point can be made variable between the fixed points. A variable detection point detector,
a discrimination circuit that compares the average value of the outputs of the pair of fixed point detectors and the output of the variable detection point detector and sends out a difference output; What is claimed is: 1. A tracking device for an internal different-phase edge of a sheet-like body, comprising a drive circuit for moving the sheet-like body in a different direction, and configured to track the different-phase edge of the sheet-like body at the variable detection point.
JP56023283A 1981-02-18 1981-02-18 Device for tracking end having different phase in sheet shaped body Granted JPS57136147A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56023283A JPS57136147A (en) 1981-02-18 1981-02-18 Device for tracking end having different phase in sheet shaped body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56023283A JPS57136147A (en) 1981-02-18 1981-02-18 Device for tracking end having different phase in sheet shaped body

Publications (2)

Publication Number Publication Date
JPS57136147A JPS57136147A (en) 1982-08-23
JPS632335B2 true JPS632335B2 (en) 1988-01-18

Family

ID=12106271

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56023283A Granted JPS57136147A (en) 1981-02-18 1981-02-18 Device for tracking end having different phase in sheet shaped body

Country Status (1)

Country Link
JP (1) JPS57136147A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7671576B2 (en) * 2008-03-06 2010-03-02 Zircon Corporation Ratiometric AC wire tracer

Also Published As

Publication number Publication date
JPS57136147A (en) 1982-08-23

Similar Documents

Publication Publication Date Title
EP1167952A3 (en) Inspection of edges
EP0358512A3 (en) Position detecting method and apparatus
WO2000037928A3 (en) Unilateral hand-held x-ray inspection apparatus
ATE214156T1 (en) DICHOTOMIC SCANNING SYSTEM FOR DETERMINING EDGES OF OBJECTS WITH RELATIVELY UNIFORM SURFACES
JP3715524B2 (en) X-ray foreign object detection device
JPS632335B2 (en)
EP0332376A3 (en) Apparatus for inspecting can seams and the like
JP2013137206A (en) Inspection method for carried body
ES8402038A1 (en) Feeler for detecting web seams.
JP2684460B2 (en) Coating film inspection method
JP3105899B2 (en) Laser optical system equipment
JPS6295849U (en)
JPH07265298A (en) X-ray ct image processing system and method therefor
JPH04129953A (en) Cellophane tape detector for paper sheet conveyer
JPS6221966Y2 (en)
JPS6222905Y2 (en)
JP3429479B2 (en) X-ray fluorescence analyzer
EP0339949B1 (en) Object counting apparatus and method
JP2626926B2 (en) Method and apparatus for detecting vehicle position in automobile manufacturing line
JPS57160004A (en) Detecting method and device for position of crane
JPH04186101A (en) Detector device for moving amount of moving object by eddy current type sensor
JPS57120802A (en) Method and device for measuring area or the like of figure
JPH0694438A (en) Appearance inspecting apparatus by light cutting method
JPS5229790A (en) Self-running flaw detection apparatus having copying device
JPH0625645B2 (en) Photoelectric centering position detector for sheets and other strips