EP0340830A2 - Ausrüstung zum Abtasten und Korrigieren der seitlichen Bewegung eines Bandes, das sich entlang einer Fertigungsstrasse bewegt - Google Patents

Ausrüstung zum Abtasten und Korrigieren der seitlichen Bewegung eines Bandes, das sich entlang einer Fertigungsstrasse bewegt Download PDF

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Publication number
EP0340830A2
EP0340830A2 EP89200999A EP89200999A EP0340830A2 EP 0340830 A2 EP0340830 A2 EP 0340830A2 EP 89200999 A EP89200999 A EP 89200999A EP 89200999 A EP89200999 A EP 89200999A EP 0340830 A2 EP0340830 A2 EP 0340830A2
Authority
EP
European Patent Office
Prior art keywords
belt
receiver
light source
optical fiber
sideways movement
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.)
Withdrawn
Application number
EP89200999A
Other languages
English (en)
French (fr)
Other versions
EP0340830A3 (de
Inventor
Mario Bianco
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0340830A2 publication Critical patent/EP0340830A2/de
Publication of EP0340830A3 publication Critical patent/EP0340830A3/de
Withdrawn legal-status Critical Current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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/0204—Sensing transverse register of web
    • B65H23/0216—Sensing transverse register of web with an element utilising photoelectric effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032—Controlling transverse register of web

Definitions

  • the invention refers to an equipment for the detection and the correction of the sideways movement of a paper, fabric, or similar, belt advancing along a processing line.
  • Said devices for the restoration of the belt sideways movement traditionally consist of photocells combined with hydraulic or pneumatic means acting on cylinders placed upward or downward to the section of the belt in consideration; said means are oriented by the action of the photocells to bring the belt back in the centered position.
  • said systems always require manual movement of the photocells depending on the width of the belt, as said photocells must always be placed in correspondence with the side edges, no matter how wide is said belt.
  • the French Patent 2545925 to an optoelectronic system utilizing a receiver oriented toward a light source, said receiver bears a focusing element generating signals according to the quantity of picked up light.
  • the receiver of the above Patent is a fluorescent plastic plane sheet having convergent properties (LISA plastic).
  • the above is a rather complex system as the LISA plastic sheet sends the light along its outer outline so it must be equipped with a plurality of photoelectric elements placed at various distances on its outer surface or emergency thickness of the light, sideways to the incidence surface of said light.
  • Said material is quite costly and it requires a rather complex equipment for the assembly and the detection of the light signals as there must be a good number of said signals along the edges of the sheet so as to ascertain exactly the light variations which occur depending on the sideways movement of the belt.
  • Purpose of this invention is to propose a device for the detection of the sideways movement of the belt utilizing an optical fibers system, or similar devices, having a preset length, by means of which any sideways movement of the belt in both directions may be detected at its ends with great precision and swiftness.
  • the optical fibers device of the invention offers advantages of simplicity, high reliability standard and comparatively low cost. Furthermore, as the optical fiber may have a remarkable length, when assembling an optical fiber on one side of the device or two optical fibers on both sides, it will not be necessary to move said fibers according to the width of the belt as it is possible to assemble optical fibers of such length to contain both very narrow and very wide belts in their field of operation.
  • the invention proposes to realize an equipment for the detection and the correction of the sideways movement of a plane belt advancing along a processing line comprising a light source and a receiver oriented toward said source and between them the advancing belt is interposed; the receiver is equipped with sensors which generate signals in accordance with the quantity of light picked up by said receiver and control the devices which restore the sideways movement of the belt, characterized in that the receiver consists of at least one optical fiber or similar device extending substantially for the entire length of the light source and the sensors are located exclusively at the ends of said optical fiber.
  • each unit comprises a body 12 containing a lamp 13 and a body 14 containing one or more fluorescent optical fibers 15 (for instance, three of them are illustrated in the figures); the respective sensors 16 are placed at the end of the optical fibers.
  • Units 12 and 14 are assembled integral to each other on a crosspiece 17 sliding on guides 18 assembled crosswise with respect to the advancing direction of the belt and parallel to the plane of said belt.
  • the fluorescent optical fibers are subject to the following phenomenon: the energy absorbed in the optical fibers by the fluorescent material at the passage of an incident ray of light of a given wave length is converted to photons of higher wave length.
  • said photons are transmitted exclusively to the two ends of the optical fiber subjected to outer light rays.
  • lamp 13 - optical fibers 15 unit assembled on the other side of the belt 10 in this case, when the belt is perfectly centered, the lengths X and Y will be identical to those of the above described unit; the entity of said lengths X and Y will vary, above all, between one unit and the adjacent one, when the belt will move sideways.
  • the sensors 16 will be combined to means which will bring back the belt to the centered position to restore equal lengths X and Y between the two abreast units and thus the centered position of the belt.
  • the width of the belt is indifferent, as the difference between the lengths X and Y of each unit, depending on the width of the belt, is not important; however, said lengths have to be equal on the two adjacent units otherwise sensors 16 will ascertain possible differences and will operate known correction means to restore the belt centered position.
  • a standard value according to the centered position of the belt relating to its width will be preset on the sensors 16; in said standard value the difference between the distances X and Y will have to determine a given wave length value to the ends of the optical fiber 15.
  • the sensors 16 will detect a different value from the one corresponding to the centered position of the belt 10, they will correct the movement depending on the direction.

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Control Of Conveyors (AREA)
EP19890200999 1988-05-06 1989-04-19 Ausrüstung zum Abtasten und Korrigieren der seitlichen Bewegung eines Bandes, das sich entlang einer Fertigungsstrasse bewegt Withdrawn EP0340830A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT67412/88A IT1219265B (it) 1988-05-06 1988-05-06 Apparecchiatura per la rilevazione e la correzione dello spostamento laterale di un nastro che avanza lungo una linea di lavorazione
IT6741288 1988-05-06

Publications (2)

Publication Number Publication Date
EP0340830A2 true EP0340830A2 (de) 1989-11-08
EP0340830A3 EP0340830A3 (de) 1990-10-31

Family

ID=11302173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890200999 Withdrawn EP0340830A3 (de) 1988-05-06 1989-04-19 Ausrüstung zum Abtasten und Korrigieren der seitlichen Bewegung eines Bandes, das sich entlang einer Fertigungsstrasse bewegt

Country Status (2)

Country Link
EP (1) EP0340830A3 (de)
IT (1) IT1219265B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657073A1 (fr) * 1990-01-16 1991-07-19 North American Mfg Appareil et procede pour guider une bande mobile.
WO2005038100A1 (de) * 2003-10-22 2005-04-28 Maschinenfabrik Rieter Ag Überwachung der riemenführung bei einer wickelvorrichtung
EP1837426A2 (de) * 2006-03-24 2007-09-26 Maschinenfabrik Rieter Ag Vorrichtung zur Überwachung der Riemenführung
WO2011017816A3 (de) * 2009-08-14 2011-04-07 Maschinenfabrik Rieter Ag Überwachung und steuerung der riemenführung bei einer watten - wickelvorrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2842361A (en) * 1956-02-13 1958-07-08 Armco Steel Corp Automatic strip alignment control
US3833816A (en) * 1972-04-06 1974-09-03 Nippon Kokan Kk Apparatus for detecting the condition of an opaque band-shaped material travelling on a delivery system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2842361A (en) * 1956-02-13 1958-07-08 Armco Steel Corp Automatic strip alignment control
US3833816A (en) * 1972-04-06 1974-09-03 Nippon Kokan Kk Apparatus for detecting the condition of an opaque band-shaped material travelling on a delivery system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657073A1 (fr) * 1990-01-16 1991-07-19 North American Mfg Appareil et procede pour guider une bande mobile.
WO2005038100A1 (de) * 2003-10-22 2005-04-28 Maschinenfabrik Rieter Ag Überwachung der riemenführung bei einer wickelvorrichtung
CN100591815C (zh) * 2003-10-22 2010-02-24 里特机械公司 监测传动带在卷绕装置中的导向
EP1837426A2 (de) * 2006-03-24 2007-09-26 Maschinenfabrik Rieter Ag Vorrichtung zur Überwachung der Riemenführung
EP1837426A3 (de) * 2006-03-24 2009-03-25 Maschinenfabrik Rieter Ag Vorrichtung zur Überwachung der Riemenführung
WO2011017816A3 (de) * 2009-08-14 2011-04-07 Maschinenfabrik Rieter Ag Überwachung und steuerung der riemenführung bei einer watten - wickelvorrichtung
CN102471949A (zh) * 2009-08-14 2012-05-23 里特机械公司 在卷绕装置中监测和控制皮带导向机构

Also Published As

Publication number Publication date
EP0340830A3 (de) 1990-10-31
IT1219265B (it) 1990-05-03
IT8867412A0 (it) 1988-05-06

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