DE862064C - Device for continuous testing of tapes for holes, tears and similar defects - Google Patents
Device for continuous testing of tapes for holes, tears and similar defectsInfo
- Publication number
- DE862064C DE862064C DEL3073A DEL0003073A DE862064C DE 862064 C DE862064 C DE 862064C DE L3073 A DEL3073 A DE L3073A DE L0003073 A DEL0003073 A DE L0003073A DE 862064 C DE862064 C DE 862064C
- Authority
- DE
- Germany
- Prior art keywords
- tape
- tapes
- holes
- tears
- continuous testing
- 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
Links
Classifications
-
- 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
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/8901—Optical details; Scanning details
-
- 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
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
- G01N21/894—Pinholes
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Description
eDie~Herstbellervon Bändern oder Folien müssen in manchen Fällen garantieren, daß ihre Ware frei von Rissen, Löchern oder ähnlichen Fehlern ist. Bei Metallbändern wird beispielsweise eine Garantie fiir Flüssigkeits- oder Gasldichtibvkeit des Materials verlangt.The ~ manufacturers of tapes or foils must in some cases guarantee that your goods are free of cracks, holes or similar defects. With metal straps For example, there is a guarantee that the material is liquid or gas-tight required.
Die Erfindung bezweckt, eine Vorrichtung zu schaffen, die bei Bändern aus undurchsichtigem oder wenig lichtdurchlässigem Material eine fortlaufende, seltbsttätige Prüfung auf solche Fehler ermöglicht. Erfindungsgemäß wird das Band zwischen eine sich über seine ganze Breite erstreckende Lichtquelle und eine dieser gegenülberstehende, sich ebenfalls über die ganze oder annähernd die ganze Bandbreite erstreckende, zur Steuerung von Anzeigevorrichtungen oder von Schaltvorgängen dienende Fotozellen oder Fotowi derstandsanordnung hindurchgeleitet. The aim of the invention is to provide a device that works with belts made of opaque or poorly translucent material a continuous, self-acting one Check for such errors. According to the invention, the tape is between a light source extending over its entire width and a light source facing it, also extending over the entire or almost the entire bandwidth, to control display devices or photocells used for switching processes or Fotowi resistor arrangement passed through.
In der Zeichnung sind zwei Ausführungsbeispiele der Erfindung dargestellt. Two exemplary embodiments of the invention are shown in the drawing.
Fig. -:i und 2 zeigen in Ansicht und Schnitt längs der Linie A-B in Fig. I eine Prüfeinrichtung nach der Erfindung; -Fig. 3 und 4 zeigen eine Abänderung dieser Einrichtung. Fig. -: i and 2 show a view and section along the line A-B in Fig. I a test device according to the invention; -Fig. 3 and 4 show a modification this facility.
-ln einem Beleuchtungskörper I, der als Rohr nach Art einer Ulbrichtschen Kugel an'gefertigt sein kann, befinden sich die Lichtquellen 2, ,die für sehr breite Bänder in Form von Leuchtröhren, für schmale Bänder in Form von starken Glühlampen in und am Ende der Röhre angeordnet sind. Das Rohr hat- an der dem Priifobjekt zugewandten Seite einen breiten Schlitz, über dem eine Zylinderlinse 3 angebracht ist, die das aus der Blende austretende Licht auf. einen möglichst schmalen Spalt, etwa o,,5 mm fokussiert. Auf diese Weise entsteht-ein schmaler Lichtstreifen, über den das zu prüfende Band 4 hinweggeführt wird. Fehlstellen im Band lassen Licht in eine über dem Prüfobjekt angeordnete Optik durchdrinlgen, gdie es mittels zweier Zylinderlinsen 5 so weit sammelt, daß eine Fotozelle 7 in einem Gehäuse 6 von allen durchtretenden Strahlen getroffen wind. Damit auf die Fotozelle kein Fehllicht fällt, wird das Band seitlich zwischen zwei eingedrehten Rollen 8, 9 geführt. -ln a lighting fixture I, which is designed as a tube in the manner of an Ulbrichtschen Ball can be made, there are the light sources 2, which are for very wide Ribbons in the form of fluorescent tubes, for narrow ribbons in the form of strong light bulbs are arranged in and at the end of the tube. The tube has on the one facing the test object Side a wide slot, above which a cylindrical lens 3 is attached, which the light emerging from the aperture. as narrow a gap as possible, about o ,, 5 mm focused. This creates a narrow strip of light over which the to be tested tape 4 is carried away. Defects in the tape let light into you Penetrate optics arranged above the test object, gth it by means of two cylindrical lenses 5 collects so far that a photocell 7 in a housing 6 of all passing through Rays hit wind. This is done so that no false light falls on the photocell Tape guided laterally between two twisted rollers 8, 9.
Bei der Abänderung nach Fig. 4 und 3 ist oberhalb des Bandes keine Optik mit ihren unvermeidlichen Verlusten angeordnet, sonder« möglichst unmittelbar über dem Rand ist ein langgestreckter Fotowiderstand7 oder eine Reihe mäanderförmig versetzter Fotowiderstände vorgesehen. In the modification of FIGS. 4 and 3 there is none above the band Optics arranged with their inevitable losses, special «as directly as possible over the edge is an elongated photoresistor7 or a series of meandering lines offset photoresistors provided.
Die von der Fütozelle- bz'w. dem Fotowiderstand abgegebenen Spannungsimpulse werden in einem Elektronenschalter verstärkt und lösen den gewünschen Schaltvorgang, z. B. Stillsetzen der Transportvorrichtung zum Herausschneiden der Felhlerstelle, aus. The from the Fütozelle- or. the voltage pulses emitted by the photoresistor are amplified in an electronic switch and solve the desired switching process, z. B. Shutting down the transport device to cut out the field spot, the end.
Für die Erfassung von verschiedenen Bandbreiten können auswechselbare mechanische Blenden in Form von Scheiben mit eingedrehten Nuten vorgesehen sein, zwischen denen das Band läuft. Interchangeable ones can be used to record different bandwidths mechanical screens in the form of disks with screwed-in grooves can be provided, between which the tape runs.
PATENTANSPROCHE: 1. Einrichtung zur fortlaufenden Prfrfung von Bändern aus undurchsichtigem oder wenig lichtdurchlässigem Material auf Löcher, Risse und ähnliche Fehlstellen, dadurch gekennzeichnet, daß das Band zwischen einer sich über seine ganze Breite erstreckenden Lichtquelle und einer dieser gegenüberstehenden, sich ebenfalls über die ganze oder annähernd ,die ganze Bandbreite erstreckenden, zur Steuerung von Anzeigevorrichtungen oder von Schaltvorgängen dienenden Fotozellen- oder Fotowiderstandsanordnung hindurchgeleitet wird. PATENT CLAIMS: 1. Device for continuous testing of tapes of opaque or less translucent material for holes, cracks and similar imperfections, characterized in that the tape between one over its entire width extending light source and one of these opposite, also extending over the whole or approximately the whole bandwidth, for the control of display devices or of switching processes serving photocell or photoresistor assembly is passed through.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL3073A DE862064C (en) | 1950-07-14 | 1950-07-14 | Device for continuous testing of tapes for holes, tears and similar defects |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL3073A DE862064C (en) | 1950-07-14 | 1950-07-14 | Device for continuous testing of tapes for holes, tears and similar defects |
Publications (1)
Publication Number | Publication Date |
---|---|
DE862064C true DE862064C (en) | 1953-01-08 |
Family
ID=7256036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL3073A Expired DE862064C (en) | 1950-07-14 | 1950-07-14 | Device for continuous testing of tapes for holes, tears and similar defects |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE862064C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1203017B (en) * | 1959-01-12 | 1965-10-14 | Paul Nash | Method for detecting defects in running webs of translucent material, for example paper, and apparatus for practicing the method |
FR2471600A3 (en) * | 1979-12-10 | 1981-06-19 | Ato Chimie | Fault counting appts. for thin films - comprises optical system with photodetector and counter responding to light passing through pinhole faults in film |
-
1950
- 1950-07-14 DE DEL3073A patent/DE862064C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1203017B (en) * | 1959-01-12 | 1965-10-14 | Paul Nash | Method for detecting defects in running webs of translucent material, for example paper, and apparatus for practicing the method |
FR2471600A3 (en) * | 1979-12-10 | 1981-06-19 | Ato Chimie | Fault counting appts. for thin films - comprises optical system with photodetector and counter responding to light passing through pinhole faults in film |
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