EP0146917B1 - Dispositif de détection de la présence d'une matière sur la surface extérieure d'un organe rotatif de transport - Google Patents

Dispositif de détection de la présence d'une matière sur la surface extérieure d'un organe rotatif de transport Download PDF

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Publication number
EP0146917B1
EP0146917B1 EP84115799A EP84115799A EP0146917B1 EP 0146917 B1 EP0146917 B1 EP 0146917B1 EP 84115799 A EP84115799 A EP 84115799A EP 84115799 A EP84115799 A EP 84115799A EP 0146917 B1 EP0146917 B1 EP 0146917B1
Authority
EP
European Patent Office
Prior art keywords
optical
light
equipment according
conductors
receiver
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 - Lifetime
Application number
EP84115799A
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German (de)
English (en)
Other versions
EP0146917A3 (en
EP0146917A2 (fr
Inventor
Günther Stiefelmeyer
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.)
Leuze Electronic GmbH and Co KG
Original Assignee
Leuze Electronic GmbH and Co KG
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 Leuze Electronic GmbH and Co KG filed Critical Leuze Electronic GmbH and Co KG
Publication of EP0146917A2 publication Critical patent/EP0146917A2/fr
Publication of EP0146917A3 publication Critical patent/EP0146917A3/de
Application granted granted Critical
Publication of EP0146917B1 publication Critical patent/EP0146917B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H43/00—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
    • B65H43/08—Photoelectric devices

Definitions

  • the invention relates to a device for detecting the presence of goods to be transported on the outer surface of a rotating transport body with the aid of a light-electric unit containing a light transmitter and a light receiver, and a circuit arrangement for signal evaluation, the light transmitter and the light receiver being arranged in a stationary manner and the transmission of the light emitted by the light transmitter Beam of light to the light receiver takes place by means of light guides which open out at one end into the scanning zone of the rotating transport body and are led out at the other end in the axial direction from the transport body to the light receiver.
  • Such a device is known from FR-A-2 240 108.
  • the photoelectric monitoring device used here works with ambient light or with an additional, exposed external light source assigned to the cylinder jacket surface and accordingly with at least two one-way light barriers which have to be offset from one another in the circumferential direction of the cylinder.
  • the problem of the stationary arrangement of the light transmitter and the light receiver on one side, as is required in reflection light barriers with a light guide for the transmitted light beam and a light guide for the reflected light beam, both of which circulate with the transport body, does not occur in the device in question . Apart from this, due to the inevitable fluctuations in the light intensity in buildings and due to the influence of the light source by extraneous light, dust, etc., there is also a noticeable risk of impairing the signal evaluation.
  • DE-A-2 539 481 shows and describes a device for reflection scanning of markings for measuring and regulating on movable mechanical processes, in particular on rotary printing presses, in which at least one flexible optical fiber cable is used as the scanning element.
  • the light guide cable forms with its front end in the area of the web to be scanned a touch surface that can be set up for a signal point and is connected at its other end, which lies outside the web area, to a light transmitter and light receiver which is firmly attached to the machine housing.
  • the light guide cable or the light guide cables are mounted in a holder on a support part in the form of a rod running transversely to the direction of web movement and approximately parallel to the web plane. This rod is attached to the machine frame.
  • the photoelectric unit works on the reflection principle and the ends of the light guide serving to transmit the transmitted light beam and the reflected light beam are led out of the transport body in such a way that the end of the light channel embodying the transmitted light channel is centrally located in a bore in the stub shaft of the transport body is arranged and the end of the reflection light channel with the light guide is accommodated in a hole eccentrically to the central axis of the stub shaft, the stub shaft being rotatably mounted in a component containing the light transmitter and the light receiver and the end of a light guide with the light transmitter and the end of the other light guide interacts with the light receiver.
  • the goods to be transported 1 are in the form of a paper or web of fabric fed to the upper rotating body 2 and, after deflection, transferred to the lower body 3 and transported further by the latter.
  • the rotating bodies 2, 3 are designed here as hollow rollers.
  • the jacket 5 is provided with two openings 6, 7 designed as through bores, each of which receives the end 8 ', 9' of a light guide 8, 9.
  • the light guide ends are spatially defined and arranged in a fixed manner, optionally using a special receiving part attached to the inside of the jacket 5.
  • the end faces of the light guides for example in the form of glass fibers or glass fiber bundles, are exposed on the material web side, so that the emitted light beam can exit to the outside and, in the presence of transport goods, the reflected portion of the emitted light can penetrate unhindered into the associated light guide.
  • the light guide designated 8 is provided for the transmission of the beam of rays emanating from the light transmitter, the light guide 9 for the return of the reflected light portion to the receiver. It is readily possible to arrange a plurality of such scanning zones on the circumference of the hollow roller 2, which, if necessary, can also be spatially offset from one another in order, for example, to be able to detect inclined positions of the goods to be transported.
  • the light guide 8 is guided in the interior of the hollow roller 2 from the scanning point into a central bore 10 in the end face of the roller, which is embodied here by a flange 13 provided with a stub shaft 12.
  • the flange 13 containing the stub shaft is fastened by means of two screws 14 to the annular end face 15 of the hollow roller and is provided for this purpose with two circumferential longitudinal slots 16, which also allow the flange to be rotated, see also FIGS. 2 and 3 the light guide 9 is inserted into a further bore 17 in the flange 13, which runs axially parallel to the bore 10 and is arranged eccentrically to the latter.
  • the bore 17 is in the same plane as the bore 10; however, it could also be offset from the bore 10 by any angle.
  • the two flange-side end regions of the two light guides are fixed in the bores 10 and 17 by means of sleeves 30, 31.
  • the receiving bores 10 and 17 continue axially as tapered bore sections 10 'and 17' in the stub shaft 12 and receive the ends 8 "and 9" of the two light guides 8 and 9.
  • the light guide ends 8 ′′ and 9 ′′ extend so far forward in the bore sections 10 ′ and 17 ′ that their end faces are at least approximately flush with the end face 12 ′ of the stub shaft 12.
  • the stub shaft 12 is rotatably supported by a roller bearing 18 in a stationary component 19 in which the light transmitter 20 and the light receiver 21 are accommodated.
  • the optical coupling of the light transmitter 20 and the light receiver 21 with the light guide 8 and the light guide 9 takes place via the air gap 23 which is necessarily present between the end face 12 'of the stub shaft 12 and the end face 22 of the component 19 lying opposite it, which is for example of the order of 0 , 1 to 0.3 mm.
  • the light transmitter can be approximately flush with the end face 22 of the component 19, as can the light receiver.
  • continuation light channels 24, 25 are to be provided in the fixed component 19, which lead to the light transmitter and light receiver located correspondingly far within the component 19.
  • the continuation light channels can also be embodied by light guides.
  • the continuation light channel 24 can also extend partially into the bore 10 'of the shaft end 12, a relative movement between this section of the light guide 24 and the shaft end 12 having to be ensured, since the latter is rotating.
  • the evaluation circuit arrangement 26 can also be accommodated in the spatially fixed component 19. However, there is also the possibility of providing the evaluation circuit arrangement elsewhere in a control center or the like. Likewise, the light transmitter 20 and the light receiver 21 can also be installed at another location and can be coupled by means of light guides to the light guides 8 and 9 rotating with the hollow roller 2 in the manner described.
  • the device described works as follows: If the scanning zone 4 is covered by a transport item 1, for example a paper web, the bundle of light rays emitted by the light transmitter 20 and guided via the light guides 24 and 8 to the scanning zone 4 of the hollow roller 2 will depend on the paper web 1 the quality of which reflects to a greater or lesser extent and reaches the light guide 9, which reflects the reflected light back to the light receiver 21 via the stationary light guide 25 which interacts with it at a certain angle of rotation.
  • the relay 27 controlled by the evaluation switching arrangement 26 does not respond in this case and the system remains in the ready state, which can be identified by an optical signal if necessary. If there is no signal at the scheduled time due to the lack of reflected light radiation because there is no transport goods in the area of the scanning zone 4, the relay 27 responds and expediently shuts down the system with simultaneous optical and / or acoustic signaling.
  • the system can conversely continue to operate if the reflected light beam is not present stay and only be switched off when there is a transport good.
  • the ends 8 'and 9' of the two light guides 8 and 9 lying in the scanning zone 4 can also be arranged coaxially to one another.
  • the two ends of the said light guides are coaxially combined in a sleeve 28 and optically shielded from one another by means of an intermediate layer 29.
  • the angular position of the light guide end 9 '' relative to the stationary light guide 25 (FIGS. 3 and 4) can be changed and thus the reflection light channel can be activated at another angular position which is deemed necessary or expedient.

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  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Claims (10)

1. Dispositif pour détecter la présence d'une matière transportée sur la surface extérieure d'un organe de transport tournant (2) à l'aide d'un ensemble photoélectrique comprenant un émetteur de lumière (20) et un récepteur de lumière (21), ainsi qu'un dispositif de commutation pour l'exploitation des signaux, l'émetteur de lumière (20) et le récepteur de lumière (21) étant montés fixes, et la transmission au récepteur de lumière du faisceau de rayons lumineux émis par l'émetteur de lumière ayant lieu au moyen de guides de lumière (8, 9) qui débouchent librement par l'une de leurs extrémités (8', 9') dans la zone d'exploration (4) de l'organe de transport tournant (2), et qui, par leur autre extrémité (8", 9"), sont amenés à sortir en direction axiale de l'organe de transport tournant (2) vers le récepteur de lumière (21 ), caractérisé par le fait que l'ensemble photoélectrique fonctionne selon le principe de la réflexion, et que les extrémités (8", 9") des guides de lumière (8, 9) qui servant à la transmission du faisceau de rayons lumineux émis et du faisceau de rayons lumineux réfléchi sont amenées à sortir de l'organe de transport tournant (2) de telle manière que l'extrémité (8") du guide de lumière (8) qui constitue le canal destiné à la lumière émise est disposée dans un perçage central (10) ménagé dans le bout d'arbre (12) de l'organe de transport tournant (2), et que l'extrémité (9") du guide de lumière (9) qui constitue le canal destiné à la lumière réfléchie est logée dans un perçage (17) excentré par rapport à l'axe central du bout d'arbre (12), cependant que le bout d'arbre (12) est monté tournant dans un élément de structure (19) qui contient l'émetteur de lumière (20) et le récepteur de lumière (21), l'extrémité (8") du guide de lumière (8) coopèrant avec l'émetteur de lumière (20) et l'extrémité (9") du guide de lumière (9) coope'rant avec le récepteur de lumière (21).
2. Dispositif selon la revendication 1, caractérisé par le fait que les extrémités (8", 9") des guides de lumière (8, 9) coopèrant avec l'émetteur de lumière (20) et le récepteur de lumière (21) par l'intermédiaire d'autres guides de lumière (24, 25), cependant que le guide de lumière (24) qui conduit à l'émetteur de lumière est guidé dans l'élément de structure fixe (19) de manière coaxiale par rapport à l'extrémite (8) du guide de lumière (8), et que le guide de lumière (25) qui correspond au récepteur de lumière (21) est monté dans l'élément de structure (19) de telle manière qu'il puisse être amené à recouvrir l'extrémité (9") du guide de lumière (9).
3. Dispositif selon les revendications 1 et 2, caractérisé par le fait que le bout d'arbre (12) est monté tournant dans l'élément de structure fixe (19) au moyen d'un palire à roulement (18) ou similaire.
4. Dispositif selon les revendications 1 à 3, caractérise par le fait que le bout d'arbre (12) est un élément d'une bride (13) que l'on peut faire tourner par rapport à l'organe de transport tournant (2) au moyen de vis (14) et de fentes allongées (16) qui s'étendant dans la direction circonférentielle.
5. Dispositif selon les revendications 1 à 4, caractérisé par le fait que plusieurs canaux de réception de la lumière situés sur le même rayon sont prévus dans l'élément de structure fixe (19).
6. Dispositif selon l'une des revendications 1 à 5, caractérisé par la fait que les extrémités (8', 9') des guides de lumière (8, 9) qui sont situées du côte où a lieu l'exploration et/ou leurs extrémités (8", 9") situées du côté du bout d'arbre (12) sont assemblées de telle manière qu'elles soient coaxiales entre elles et protégées optiquement l'une par rapport à l'autre.
7. Dispositif selon les revendications 1 à 6, caractérisé par le fait que la zone de transition entre le bout d'arbre tournant (12) et l'élément de structure fixe (19) qui lui fait face est protégée de la lumière incidente extérieure.
8. Dispositif selon les revendications 1 à 7, caractérisé par le fait que l'on utilise comme guides de lumière des fibres de verre ou des faiscaux de fibres de verre.
9. Dispositif selon les revendications 1 à 7 caractérisé par le fait que l'on utilise comme guides de lumière des fibres en matière plastique ou des faisceaux de fibres en matière plastique.
10. Dispositif selon l'une des revendications 1 à 9, caractérisé par le fait que, dans le cas où l'émetteur de lumière (20) et le récepteur de lumière (21) sont séparés dans l'espace de l'élément de structure (19), ces éléments constitutifs sont accouplés aux guides de lumière (8, 9) au moyen des guides de lumière (24, 25) qui sont prolongés en conséquence.
EP84115799A 1983-12-22 1984-12-19 Dispositif de détection de la présence d'une matière sur la surface extérieure d'un organe rotatif de transport Expired - Lifetime EP0146917B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833346347 DE3346347A1 (de) 1983-12-22 1983-12-22 Verfahren zum erkennen des vorhandenseins von transportgut auf der mantelflaeche eines rotierenden transportkoerpers
DE3346347 1983-12-22

Publications (3)

Publication Number Publication Date
EP0146917A2 EP0146917A2 (fr) 1985-07-03
EP0146917A3 EP0146917A3 (en) 1987-04-15
EP0146917B1 true EP0146917B1 (fr) 1990-03-14

Family

ID=6217652

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115799A Expired - Lifetime EP0146917B1 (fr) 1983-12-22 1984-12-19 Dispositif de détection de la présence d'une matière sur la surface extérieure d'un organe rotatif de transport

Country Status (2)

Country Link
EP (1) EP0146917B1 (fr)
DE (2) DE3346347A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6055047A (en) * 1997-05-30 2000-04-25 Eastman Kodak Company Device for determining the degree of wear of a paper transport roller

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3930782C1 (fr) * 1989-09-14 1991-01-24 Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De
DE4239086C2 (de) * 1992-11-20 1998-07-30 Kba Planeta Ag Einrichtung zur Bogenkontrolle in rotierenden Transportkörpern von Druckmaschinen
DE4323091A1 (de) * 1993-07-10 1995-01-12 Heidelberger Druckmasch Ag Anordnung zur Kontrolle der Lage einer Bogenkante auf einer Bogentransporttrommel
DE19944958C2 (de) * 1999-09-20 2002-02-07 Voith Paper Patent Gmbh Leit- oder Kontaktwalzenanordnung zum Handhaben einer Materialbahn, insbesondere in einer Rollenwickelvorrichtung
DE10131019A1 (de) * 2001-06-05 2002-12-19 Siemens Ag Mess- und Erfassungsrolle
GB2405464A (en) 2003-08-23 2005-03-02 Ncr Int Inc Optical bank note detector
DE102006000866B4 (de) * 2006-01-05 2008-09-18 Koenig & Bauer Aktiengesellschaft System zur Aufnahme eines Bildes von zumindest einem Teil einer Oberfläche eines flächigen Materials
DE102006048145B4 (de) * 2006-10-10 2014-01-02 Sick Ag Rolle für einen Rollenförderer
DE202007015529U1 (de) * 2007-11-08 2009-03-26 Sick Ag Rolle für eine Rollenbahn
CN103726286B (zh) * 2014-01-03 2015-11-25 成都瑞克西自动化技术有限公司 织带规格更换识别装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3327584A (en) * 1963-09-09 1967-06-27 Mechanical Tech Inc Fiber optic proximity probe
DE2339902A1 (de) * 1973-08-07 1975-02-20 Frankenthal Ag Albert Aufnahmezylinder im falzapparat von rotationsdruckmaschinen
AT337215B (de) * 1974-10-28 1977-06-27 Eltromat Tautorus & Co Vorrichtung zum erfassen von markierungen auf einer sich bewegenden bahn, zum messen und regeln mechanischer ablaufe
DE2701992A1 (de) * 1977-01-19 1978-07-27 Heinz Walter Anordnung zur ueberwachung des laufes von insbesondere papierbahnen an druckmaschinen
DE3219622A1 (de) * 1982-05-25 1983-12-01 Maschinenfabrik Alfred Schmermund Gmbh & Co, 5820 Gevelsberg Vorrichtung fuer den vorschub einer mit registermarken versehenen warenbahn
JPS59203907A (ja) * 1983-05-02 1984-11-19 Kyoto Denso:Kk 回転体に接離する被検体の検出装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6055047A (en) * 1997-05-30 2000-04-25 Eastman Kodak Company Device for determining the degree of wear of a paper transport roller
DE19722593C2 (de) * 1997-05-30 2001-06-07 Nexpress Solutions Llc Vorrichtung zur Verschleißgradbestimmung einer Papiertransportrolle

Also Published As

Publication number Publication date
DE3346347A1 (de) 1985-07-18
DE3346347C2 (fr) 1989-12-07
EP0146917A3 (en) 1987-04-15
EP0146917A2 (fr) 1985-07-03
DE3481604D1 (de) 1990-04-19

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