EP2598419A1 - Device for the non-destructive inspection of a conveyor belt during production by means of high-energy rays, in particular x-rays - Google Patents

Device for the non-destructive inspection of a conveyor belt during production by means of high-energy rays, in particular x-rays

Info

Publication number
EP2598419A1
EP2598419A1 EP11716533.2A EP11716533A EP2598419A1 EP 2598419 A1 EP2598419 A1 EP 2598419A1 EP 11716533 A EP11716533 A EP 11716533A EP 2598419 A1 EP2598419 A1 EP 2598419A1
Authority
EP
European Patent Office
Prior art keywords
conveyor belt
housing
sensor
rays
radiation source
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Withdrawn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
EP11716533.2A
Other languages
German (de)
French (fr)
Inventor
Bernd Küsel
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.)
Phoenix Conveyor Belt Systems GmbH
Original Assignee
Phoenix Conveyor Belt Systems GmbH
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 Phoenix Conveyor Belt Systems GmbH filed Critical Phoenix Conveyor Belt Systems GmbH
Publication of EP2598419A1 publication Critical patent/EP2598419A1/en
Withdrawn legal-status Critical Current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
    • G01N23/083—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
    • 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
    • G01N23/04—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 forming images of the material
    • G01N23/046—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 forming images of the material using tomography, e.g. computed tomography [CT]
    • 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
    • G01N23/18—Investigating the presence of flaws defects or foreign matter
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/40—Imaging
    • G01N2223/419—Imaging computed tomograph

Definitions

  • the invention relates to a device for non-destructive inspection of a conveyor belt with a support-side cover plate and running side cover plate of one each
  • Rubber compound and with an embedded tensile member on a production plant consisting of at least the following parts of the plant:
  • a vulcanizing press comprising a top plate and bottom plate which are heatable;
  • vulcanized conveyor belt accommodates under winding
  • the support-side cover plate and running-side cover plate each consist of one
  • Processing aids and / or an aging protection agent and / or a plasticizer and / or other additives for example fibers, color pigments.
  • Rubber base is in particular:
  • SBR Styrene butadiene rubber
  • NBR Nitrile rubber
  • EPM Ethylene-propylene rubber
  • EPDM Ethylene-propylene-diene rubber
  • the conveyor belt undergoes the necessary elastic properties.
  • embedded tension members steel or aramid ropes running in the longitudinal direction of the conveyor belt are used, ropes made of steel being of particular importance.
  • the tension member may also be a textile fabric, in particular a single-layer or multi-layer fabric, for example a polyester-polyamide fabric.
  • the following components can also be embedded in the support-side and / or run-side cover plate (s): Conductor loops, transponders, barcodes, a polymer matrix with detectable particles mixed in, or other detectable elements.
  • conductor loops Conductor loops, transponders, barcodes, a polymer matrix with detectable particles mixed in, or other detectable elements.
  • process-controlled devices for monitoring production areas are used, for example, in the control of the vulcanization temperature.
  • the published patent application DE 10 2009 003 458 A1 describes a more recent development for monitoring the rope tension of a steel cord conveyor belt during its production.
  • the monitoring device comprises at least the following components: - A clamping device which clamps all ropes;
  • a measuring device that controls the rope tension of each rope as well
  • Measuring device is able to individually with each rope as needed
  • the measuring device is a pitch measuring station, which is equipped with at least one Tonaufillon that detects a change in the oscillation frequency and thus adjusting the pitch a change in the rope tension for each vibrated rope.
  • the object of the invention is therefore to develop the generic device such that hereby all conveyor belt specific data as well as errors during the production of a conveyor belt can be reliably detected.
  • This object is achieved in that before and / or after the vulcanizing a housing is arranged, which is provided with two housing openings through which the conveyor belt passes without contact, within the housing a radiation source in the direction of the surface of the conveyor belt emits rays that are energetic that they radiate through the conveyor belt, with a likewise in the housing
  • accommodated sensor detects the transmitted rays without contact, wherein finally the process computer evaluates the result of the radiographic examination, under detection of the actual values when compared with the nominal values of the conveyor belt.
  • the radiation source emits X-rays, in particular again in the form of an X-ray tube.
  • the radiation source is arranged such that the belt surface can be detected by the beams according to the following two variants I or II:
  • the radiation source covers the entire conveyor belt width. This is preferably the case when the conveyor belt is not too wide, for example up to 1000 mm.
  • the conveyor belt is divided into longitudinal strips (segments) when using a single X-ray tube. For example, if the conveyor belt has a width of 2000 mm, then this is divided into four longitudinal strips, each with a width of 500 mm. As soon as a strip has been examined and evaluated, the X-ray tube is displaced by 500 mm. A 2000 mm wider Conveyor belt would then be completely recorded over its entire width in four steps.
  • the rays of sensors Opposite the radiation source, ie on the other side of the conveyor belt, the rays of sensors, including light-sensitive chips detected.
  • line sensors are preferably used.
  • the sensor can also act as a single sensor or as a sensor chain. The dimension of a sensor depends, in particular, according to which of the two aforementioned variants I or II the radiation source detects the extent of the conveyor belt width. In variant II, a displaceable sensor can be used.
  • the data deviating from the perfect condition of the conveyor belt are finally evaluated in real time and automatically lead to error messages, for example via individual threshold data filters.
  • the data is also evaluated graphically.
  • Fig. 1 Details of a housing with integrated radiation source and integrated sensor;
  • FIG. 2 arrangement of a housing according to FIG. 1 before the Vulkanisierpresse
  • FIG. 3 arrangement of a housing according to FIG. 1 after the Vulkanisierpresse
  • Fig. 1 shows a housing 1, which has two housing openings 2 and 3, through which the conveyor belt 4 is guided without contact in the running direction (arrow).
  • the two housing openings are usually designed as correspondingly large slits.
  • the conveyor belt has a support-side cover plate 5 and running-side cover plate 6, each consisting of a rubber mixture, for example based on CR.
  • a tension member 7, for example in the form of steel cables, is embedded in the conveyor belt.
  • the conveyor belt can still have a transverse reinforcement, conductor loops, transponders, etc.
  • the conveyor belt is here still unvulcanized (conveyor belt blank) and has within the carrying side and running side cover plate still air inclusions 8.
  • a radiation source 9 in particular in the form of an X-ray tube, housed.
  • a sensor 11 which is arranged in the nearer region of the run-side cover plate 6, detects contactless (ie, wear-free) the transmitted beams 10.
  • the sensor is designed in particular as a line sensor.
  • a process computer finally evaluates the result of the radiographic examination, for example the extent of the air inclusions 8.
  • 2 shows a production plant 12 with a vulcanizing press 13, comprising a top plate 14 and a bottom plate 15, which are heatable.
  • the vulcanization temperature is usually 130 to 180 ° C.
  • On a first winding 16 is the unvulcanized votinggurtrohling after its
  • a housing 18 is arranged, as described in detail in the context of Figure 1.
  • the housing is sunk below the conveyor belt 17 mostly in the bottom of the production hall. In this case, the
  • the condition of the conveyor belt blank can be tracked by means of a camera by means of an image, in particular an X-ray image, by means of a camera. If the actual values coincide with the target values with reference to limit values, the conveyor belt blank examined in this way is transferred to the vulcanizing press and vulcanized there. The transfer into the vulcanizing press can also take place if there are deviations from the desired values, which can be corrected during vulcanization. This is possible, for example, if the radiographic examination shows that the conveyor belt blank has air inclusions 8 (FIG. 1) which deviate from the relevant setpoint values or limit values. By adjusting the vulcanization conditions, the air inclusions can be minimized, at least within the limits of the limit range. A second winding 19 finally takes up the vulcanized conveyor belt with winding. This wound finished conveyor belt can then be transported to its place of use on a conveyor.
  • FIG. 3 now shows a production plant 22 with a vulcanizing press 23, a first winding 24 and a second winding 25.
  • the housing 26 is arranged after the vulcanizing press, where the radiographic examination of the vulcanized conveyor belt 27 takes place in the context of a final article inspection.
  • the housings 18 (FIG. 2) and 26 (FIG. 3) can also be arranged together in a production plant, so that a conveyor belt control is realized before and after the vulcanization.

Abstract

The invention relates to a device for the non-destructive inspection of a conveyor belt (4) having a top sheet (5) on the supporting side and a top sheet (6) on the running side each consisting of a rubber mixture and having an embedded tensile load-bearing element (7) on a production plant which consists of at least the following plant parts: - a vulcanizing press, comprising a heatable upper plate and a heatable lower plate; - a first coil for the unvulcanized conveyor belt blank, which is fed to the vulcanizing press by unwinding; - a second coil, which receives the vulcanized conveyor belt after it has left the vulcanizing press by coiling; - carrying rollers for the conveyor belt and - a process computer. The device according to the invention is distinguished by the fact that a housing (1) is arranged upstream and/or downstream of the vulcanizing press and is provided with two housing openings (2, 3) through which the conveyor belt (4) runs in a contactless manner, wherein a radiation source (9) emits rays (10) within the housing in the direction of the surface of the conveyor belt, said rays containing such a high amount of energy that they pass radiation through the conveyor belt, wherein a sensor (11) likewise accommodated in the housing captures the rays which have passed through in a contactless manner, wherein finally the process computer evaluates the result of the radiation examination, to be precise by capturing the actual values upon comparison with the nominal values of the conveyor belt.

Description

Phoenix Conveyor Belt Systems GmbH  Phoenix Conveyor Belt Systems GmbH
Beschreibung description
Einrichtung zur zerstörungsfreien Inspektion eines Fördergurtes während der Produktion mittels energiereicher Strahlen, insbesondere Röntgenstrahlen Device for nondestructive inspection of a conveyor belt during production by means of high-energy radiation, in particular X-rays
Die Erfindung betrifft eine Einrichtung zur zerstörungsfreien Inspektion eines Fördergurtes mit einer tragseitigen Deckplatte und laufseitigen Deckplatte aus jeweils einer The invention relates to a device for non-destructive inspection of a conveyor belt with a support-side cover plate and running side cover plate of one each
Kautschukmischung sowie mit einem eingebetteten Zugträger auf einer Produktionsanlage, die aus wenigstens folgenden Anlagenteile besteht: Rubber compound and with an embedded tensile member on a production plant consisting of at least the following parts of the plant:
- einer Vulkanisierpresse, umfassend eine Oberplatte und Unterplatte, die beheizbar sind; a vulcanizing press comprising a top plate and bottom plate which are heatable;
- einem ersten Wickel für den unvulkanisierten Fördergurtrohling, der unter Abwickeln der Vulkanisierpresse zugeführt wird; a first winding for the unvulcanized conveyor belt blank which is fed by unwinding the vulcanizing press;
- einem zweiten Wickel, der nach dem Verlassen der Vulkanisierpresse den - A second winding, after leaving the Vulkanisierpresse the
vulkanisierten Fördergurt unter Aufwickeln aufnimmt;  vulcanized conveyor belt accommodates under winding;
- Tragrollen für den Fördergurt sowie - carrying rollers for the conveyor belt as well
- einem Prozessrechner. - a process computer.
Was den Aufbau eines Fördergurtes betrifft, so wird insbesondere auf folgende As far as the construction of a conveyor belt is concerned, in particular the following
Patentliteratur verwiesen: Patent literature referenced:
DE 25 20 943 AI DE 25 20 943 AI
DE 25 32 190 AI DE 25 32 190 AI
DE 38 01 120 AI DE 43 33 839 AI DE 38 01 120 AI DE 43 33 839 AI
DE 44 36 042 AI DE 44 36 042 AI
EP 0 336 385 AI EP 0 336 385 Al
EP 0 753 471 AI EP 0 753 471 A1
WO 2008/034483 AI WO 2008/034483 AI
Die tragseitige Deckplatte und laufseitige Deckplatte bestehen jeweils aus einer The support-side cover plate and running-side cover plate each consist of one
Kautschukmischung, enthaltend eine Kautschukkomponente oder einen Rubber mixture containing a rubber component or a
Kautschukkomponentenverschnitt, ein Vernetzungsmittel oder ein Vernetzungssystem, umfassend ein Vernetzungsmittel und einen Beschleuniger, sowie zumeist weitere Mischungsingredienzien, insbesondere einen Füllstoff und/oder ein A rubber component blend, a crosslinking agent or a crosslinking system, comprising a crosslinking agent and an accelerator, and usually further Mischingingredienien, in particular a filler and / or a
Verarbeitungshilfsmittel und/oder ein Alterungs Schutzmittel und/oder einen Weichmacher und/oder sonstige Zusatzstoffe (z.B. Fasern, Farbpigmente). Die diesbezügliche Processing aids and / or an aging protection agent and / or a plasticizer and / or other additives (for example fibers, color pigments). The relevant
Kautschukbasis ist insbesondere: Rubber base is in particular:
Naturkautschuk (NR) Natural rubber (NR)
Butadien-Kautschuk (BR)  Butadiene rubber (BR)
Chloropren- Kautschuk (CR)  Chloroprene rubber (CR)
Styrol-Butadien-Kautschuk (SBR)  Styrene butadiene rubber (SBR)
Nitrilkautschuk (NBR) Nitrile rubber (NBR)
Butylkautschuk (HR)  Butyl rubber (HR)
Ethylen-Propylen- Kautschuk (EPM)  Ethylene-propylene rubber (EPM)
Ethylen-Propylen-Dien-Kautschuk (EPDM)  Ethylene-propylene-diene rubber (EPDM)
SBR/NR-Verschnitt  SBR / NR blend
SBR/BR-Verschnitt SBR / BR blend
NR/BR-Verschnitt  NR / BR blend
Von besonderer Bedeutung war bislang CR, das sich durch eine hohe Flamm-, Witterungsund Alterungsbeständigkeit auszeichnet, insbesondere für Fördergurte mit Einsatz im Untertagebergbau. Heute kommt der Werkstoffbasis SBR/NR eine herausragende So far, CR has been of particular importance, which is characterized by high resistance to fire, weathering and aging, in particular for conveyor belts used in underground mining. Today, the SBR / NR material base is an outstanding one
Bedeutung zu. Bedingt durch die Vulkanisation einer Kautschukmischung der oben genannten Art erfährt der Fördergurt die erforderlichen elastischen Eigenschaften. Als eingebettete Zugträger kommen in Fördergurtlängsrichtung verlaufende Seile aus Stahl oder Aramid zum Einsatz, wobei Seile aus Stahl von besonderer Bedeutung sind. Meaning too. Due to the vulcanization of a rubber mixture of the type mentioned above, the conveyor belt undergoes the necessary elastic properties. As embedded tension members, steel or aramid ropes running in the longitudinal direction of the conveyor belt are used, ropes made of steel being of particular importance.
Insbesondere in Verbindung mit Stahlseilfördergurten wird zwecks Schlitzschutz zusätzlich eine eingebettete Querarmierung aus Synthesecorden, beispielsweise aus Polyamid (PA), verwendet (WO 2008/034483 AI). Der Zugträger kann auch ein textiles Flächengebilde, insbesondere ein ein- oder mehrlagiges Gewebe, beispielsweise ein Polyester-Polyamid-Gewebe, sein. In particular in connection with steel cord conveyor belts, for the purpose of slot protection, an embedded transverse reinforcement made of synthetic cords, for example of polyamide (PA), is additionally used (WO 2008/034483 A1). The tension member may also be a textile fabric, in particular a single-layer or multi-layer fabric, for example a polyester-polyamide fabric.
In die tragseitige und/oder laufseitige Deckplatte/n können zudem noch folgende Bauteile eingebettet sein: Leiterschleifen, Transponder, Barcodes, eine Polymermatrix mit eingemischten detektierbaren Teilchen oder andere detektierbare Elemente. Diesbezüglich wird insbesondere auf folgende Patentliteratur verwiesen: The following components can also be embedded in the support-side and / or run-side cover plate (s): Conductor loops, transponders, barcodes, a polymer matrix with detectable particles mixed in, or other detectable elements. In this regard, reference is made in particular to the following patent literature:
DE 44 44 264 Cl DE 44 44 264 Cl
DE 197 15 703 AI DE 197 15 703 Al
DE 10 2005 054 481 AI DE 10 2005 054 481 Al
WO 02/40 384 AI WO 02/40 384 AI
Bei der Fertigung eines Fördergurtes werden neben der visuellen Überwachung auch prozessgesteuerte Einrichtungen zur Überwachung von Produktionsbereichen eingesetzt, beispielsweise bei der Kontrolle der Vulkanisationstemperatur. In the production of a conveyor belt, in addition to the visual monitoring, process-controlled devices for monitoring production areas are used, for example, in the control of the vulcanization temperature.
In der Offenlegungsschrift DE 10 2009 003 458 AI wird eine neuere Entwicklung zur Überwachung der Seilspannung eines Stahlseilfördergurtes während seiner Fertigung beschrieben. Die Überwachungseinrichtung umfasst wenigstens folgende Bauteile: - eine Klemmeinrichtung, die alle Seile verklemmt; The published patent application DE 10 2009 003 458 A1 describes a more recent development for monitoring the rope tension of a steel cord conveyor belt during its production. The monitoring device comprises at least the following components: - A clamping device which clamps all ropes;
- eine Messeinrichtung, die die Seilspannung jedes Seiles kontrolliert sowie - A measuring device that controls the rope tension of each rope as well
- eine Seilspanneinrichtung, die nach Auswertung der Messergebnisse der - A rope tensioning device, which after evaluation of the results of the
Messeinrichtung in der Lage ist, bei jedem Seil nach Bedarf individuell eine  Measuring device is able to individually with each rope as needed
Nachspannung vorzunehmen.  To make tension.
Die Messeinrichtung ist dabei eine Tonhöhenmessstation, die mit wenigstens einem Tonaufnehmer ausgestattet ist, der für jedes in Schwingung versetzte Seil eine Änderung der Schwingungsfrequenz und somit unter Abgleich der Tonhöhe eine Änderung der Seilspannung erfasst. The measuring device is a pitch measuring station, which is equipped with at least one Tonaufnehmer that detects a change in the oscillation frequency and thus adjusting the pitch a change in the rope tension for each vibrated rope.
In den vergangenen Jahren wurde jedoch die meiste Entwicklungsarbeit in die In recent years, however, most of the development work has been in the
Überwachung einer laufenden Förderanlage, die sich bei gemuldeter oder geschlossener Fördergurtführung über mehre Kilometer erstrecken kann, investiert, wobei insbesondere folgende beiden Überwachungssysteme herangezogen werden: opto-elektonische Systeme Strahlungssysteme Monitoring of a running conveyor system, which can extend over several kilometers with a hollowed or closed conveyor belt guide, invests, whereby in particular the following two monitoring systems are used: Optoelectronic systems Radiation systems
DE 100 29 545 AI DE 35 17 314 AI DE 100 29 545 AI DE 35 17 314 AI
DE 100 48 552 AI WO 2006/066519 AI  DE 100 48 552 A1 WO 2006/066519 A1
DE 101 00 813 AI JP 04158208 A (Patent Abstracts of Japan) DE 101 00 813 A1 JP 04158208 A (Patent Abstracts of Japan)
DE 101 29 091 AI JP 2000292371 A (Patent Abstracts of Japan)DE 101 29 091 A1 JP 2000292371 A (Patent Abstracts of Japan)
DE 101 40 920 AI DE 101 40 920 AI
EP 1 187 781 Bl  EP 1 187 781 Bl
WO 2005/023688 AI  WO 2005/023688 AI
WO 2008/031648 AI Die Aufgabe der Erfindung besteht nun darin, die gattungsgemäße Einrichtung derart weiterzuentwickeln, dass hiermit alle fördergurtspezifischen Daten wie auch Fehler während der Produktion eines Fördergurtes zuverlässig erkannt werden können. Gelöst wird diese Aufgabe dadurch, dass vor und/oder nach der Vulkanisierpresse ein Gehäuse angeordnet ist, das mit zwei Gehäuseöffnungen versehen ist, durch die der Fördergurt berührungslos verläuft, wobei innerhalb des Gehäuses eine Strahlenquelle in Richtung der Oberfläche des Fördergurtes Strahlen aussendet, die derart energiereich sind, dass diese den Fördergurt durchstrahlen, wobei ein ebenfalls in dem Gehäuse WO 2008/031648 AI The object of the invention is therefore to develop the generic device such that hereby all conveyor belt specific data as well as errors during the production of a conveyor belt can be reliably detected. This object is achieved in that before and / or after the vulcanizing a housing is arranged, which is provided with two housing openings through which the conveyor belt passes without contact, within the housing a radiation source in the direction of the surface of the conveyor belt emits rays that are energetic that they radiate through the conveyor belt, with a likewise in the housing
untergebrachter Sensor die durchgegangenen Strahlen berührungslos erfasst, wobei schließlich der Prozessrechner das Ergebnis der Durchstrahlungsprüfung auswertet, und zwar unter Erfassung der Ist-Werte bei Abgleich mit den Sollwerten des Fördergurtes. accommodated sensor detects the transmitted rays without contact, wherein finally the process computer evaluates the result of the radiographic examination, under detection of the actual values when compared with the nominal values of the conveyor belt.
Die Strahlenquelle sendet insbesondere Röntgenstrahlen aus, insbesondere wiederum in Form einer Röntgenröhre. Innerhalb des Gehäuses ist die Strahlenquelle derart angeordnet, dass die Gurtoberfläche nach folgenden zwei Varianten I oder II durch die Strahlen erfassbar ist: In particular, the radiation source emits X-rays, in particular again in the form of an X-ray tube. Within the housing, the radiation source is arranged such that the belt surface can be detected by the beams according to the following two variants I or II:
— Variante I - Variant I
Die Strahlenquelle erfasst die gesamte Fördergurtbreite. Dies ist vorzugsweise dann der Fall, wenn der Fördergurt nicht allzu breit ist, beispielsweise bis 1000 mm. The radiation source covers the entire conveyor belt width. This is preferably the case when the conveyor belt is not too wide, for example up to 1000 mm.
— Variante II - Variant II
Große Überland-Fördergurte sind in der Regel bis zu 2800 mm breit. Da insbesondere die Röntgenröhren verhältnismäßig teuer sind, wird der Fördergurt bei Einsatz einer einzigen Röntgenröhre in Längsstreifen (Segmente) aufgeteilt. Wenn beispielsweise der Fördergurt eine Breite von 2000 mm aufweist, so wird dieser in vier Längsstreifen mit jeweils einer Breite von 500 mm aufgeteilt. Sobald ein Streifen untersucht und ausgewertet ist, wird die Röntgenröhre um 500 mm versetzt. Ein 2000 mm breiter Fördergurt wäre dann über seine gesamte Breite hinweg in vier Schritten komplett aufgezeichnet. Large overland conveyor belts are usually up to 2800 mm wide. In particular, since the X-ray tubes are relatively expensive, the conveyor belt is divided into longitudinal strips (segments) when using a single X-ray tube. For example, if the conveyor belt has a width of 2000 mm, then this is divided into four longitudinal strips, each with a width of 500 mm. As soon as a strip has been examined and evaluated, the X-ray tube is displaced by 500 mm. A 2000 mm wider Conveyor belt would then be completely recorded over its entire width in four steps.
Gegenüber der Strahlenquelle, also auf der anderen Seite des Fördergurtes, werden die Strahlen von Sensoren, umfassend auch lichtempfindliche Chips, erfasst. Um eine gute Auflösung, beispielsweise von 3 mm, zu bekommen, werden vorzugsweise Zeilensensoren eingesetzt. Der Sensor kann ferner als Einzelsensor oder als Sensorenkette wirken. Die Dimension eines Sensors richtet sich insbesondere danach, nach welcher der zwei vorgenannten Varianten I oder II die Strahlenquelle das Ausmaß der Fördergurtbreite erfasst. Bei der Variante II kann ein versetzbarer Sensor zum Einsatz gelangen. Opposite the radiation source, ie on the other side of the conveyor belt, the rays of sensors, including light-sensitive chips detected. In order to obtain a good resolution, for example of 3 mm, line sensors are preferably used. The sensor can also act as a single sensor or as a sensor chain. The dimension of a sensor depends, in particular, according to which of the two aforementioned variants I or II the radiation source detects the extent of the conveyor belt width. In variant II, a displaceable sensor can be used.
Die Intensität der empfangenen Strahlen in Verbindung mit der anschließenden The intensity of the received rays in connection with the subsequent
Auswertung der Grauwerte mittels einer speziellen Bildverarbeitungs-Software erlaubt Rückschlüsse über die Beschaffenheit des Fördergurtes. Evaluation of the gray values by means of a special image processing software allows conclusions about the condition of the conveyor belt.
Die Daten der von der einwandfreien Beschaffenheit des Fördergurtes abweichenden Stellen werden schließlich in Echtzeit ausgewertet und führen, beispielsweise über individuelle Schwellwert-Datenfilter, automatisch zu Fehlermeldungen. Die Daten werden außerdem graphisch ausgewertet. The data deviating from the perfect condition of the conveyor belt are finally evaluated in real time and automatically lead to error messages, for example via individual threshold data filters. The data is also evaluated graphically.
Mit der neuen Einrichtung können folgende Daten erfasst werden: With the new facility, the following data can be collected:
- Erkennung von Seilfehlern, Kantenfehlern und anderen Beschädigungen; - Erkennung der Seilteilung, Seillage, Einschlüsse (Luft, Fremdkörper), Gurtbreite, Gurtdicke, Lage- und Beschaffenheit der Querarmierung, Gewebestöße (längs und quer), Lage und Beschaffenheit von integrierten Bauteilen (Leiterschleifen, - detection of rope faults, edge defects and other damage; - Detection of rope division, rope position, inclusions (air, foreign bodies), belt width, belt thickness, position and condition of the transverse reinforcement, fabric joints (longitudinal and transverse), position and condition of integrated components (conductor loops,
Transponder, Barcodes etc.). Die Erfindung wird nun anhand von zwei Ausführungsbeispielen unter Bezugnahme auf schematische Zeichnungen erläutert. Es zeigen: Fig. 1 Details eines Gehäuses mit integrierter Strahlenquelle und integriertem Sensor; Transponders, barcodes etc.). The invention will now be explained with reference to two embodiments with reference to schematic drawings. Show it: Fig. 1 Details of a housing with integrated radiation source and integrated sensor;
Fig. 2 Anordnung eines Gehäuses gemäß Fig. 1 vor der Vulkanisierpresse Fig. 2 arrangement of a housing according to FIG. 1 before the Vulkanisierpresse
(vor der Vulkanisation);  (before vulcanization);
Fig. 3 Anordnung eines Gehäuses gemäß Fig. 1 nach der Vulkanisierpresse Fig. 3 arrangement of a housing according to FIG. 1 after the Vulkanisierpresse
(nach der Vulkanisation). Fig. 1 zeigt ein Gehäuse 1, das zwei Gehäuseöffnungen 2 und 3 besitzt, durch die der Fördergurt 4 in Laufrichtung (Pfeilrichtung) berührungslos geführt wird. Die beiden Gehäuseöffnungen sind zumeist als entsprechend große Breitschlitze ausgebildet. Der Fördergurt weist eine tragseitige Deckplatte 5 und laufseitige Deckplatte 6 auf, die jeweils aus einer Kautschukmischung, beispielsweise auf der Basis von CR, bestehen. In den Fördergurt ist zudem ein Zugträger 7, beispielsweise in Form von Stahlseilen, eingebettet. Neben diesen Grundbestandteilen kann der Fördergurt noch eine Querarmierung, Leiterschleifen, Transponder etc. besitzen. Der Fördergurt ist hier noch unvulkanisiert (Fördergurtrohling) und weist innerhalb der tragseitigen und laufseitigen Deckplatte noch Lufteinschlüsse 8 auf.  (after vulcanization). Fig. 1 shows a housing 1, which has two housing openings 2 and 3, through which the conveyor belt 4 is guided without contact in the running direction (arrow). The two housing openings are usually designed as correspondingly large slits. The conveyor belt has a support-side cover plate 5 and running-side cover plate 6, each consisting of a rubber mixture, for example based on CR. In addition, a tension member 7, for example in the form of steel cables, is embedded in the conveyor belt. In addition to these basic components, the conveyor belt can still have a transverse reinforcement, conductor loops, transponders, etc. The conveyor belt is here still unvulcanized (conveyor belt blank) and has within the carrying side and running side cover plate still air inclusions 8.
Innerhalb des Gehäuses 7 ist nun eine Strahlenquelle 9, insbesondere in Form einer Röntgenröhre, untergebracht. Die Strahlenquelle mit ihren energiereichen Strahlen 10, insbesondere wiederum in Form von Röntgenstrahlen, erfasst die tragseitige Deckplatte 5. Hinsichtlich der Erfassung wird auf die zuvor erwähnten Varianten I und II verwiesen. Ein Sensor 11 , der im näheren Bereich der laufseitigen Deckplatte 6 angeordnet ist, erfasst berührungslos (d.h. verschleißfrei) die durchgegangenen Strahlen 10. Der Sensor ist dabei insbesondere als Zeilensensor ausgebildet. Ein Prozessrechner wertet schließlich das Ergebnis der Durchstrahlungsprüfung aus, beispielsweise das Ausmaß der Lufteinschlüsse 8. Fig. 2 zeigt eine Produktionsanlage 12 mit einer Vulkanisierpresse 13, umfassend eine Oberplatte 14 und eine Unterplatte 15, die beheizbar sind. Die Vulkanisationstemperatur beträgt üblicherweise 130 bis 180 °C. Auf einem ersten Wickel 16 ist der unvulkanisierte Fördergurtrohling nach dessen Within the housing 7 is now a radiation source 9, in particular in the form of an X-ray tube, housed. The radiation source with its high-energy beams 10, in particular again in the form of X-rays, detects the support-side cover plate 5. With regard to the detection, reference is made to the aforementioned variants I and II. A sensor 11, which is arranged in the nearer region of the run-side cover plate 6, detects contactless (ie, wear-free) the transmitted beams 10. The sensor is designed in particular as a line sensor. A process computer finally evaluates the result of the radiographic examination, for example the extent of the air inclusions 8. 2 shows a production plant 12 with a vulcanizing press 13, comprising a top plate 14 and a bottom plate 15, which are heatable. The vulcanization temperature is usually 130 to 180 ° C. On a first winding 16 is the unvulcanized Fördergurtrohling after its
Herstellung gelagert. Unter Abwickeln des Fördergurtes 17 wird dieser Rohling in Laufrichtung (Pfleilrichtung) zwecks Vulkanisation der Vulkanisierpresse 13 zugeführt. Production stored. Unwinding the conveyor belt 17, this blank is fed in the running direction (maintenance direction) for the purpose of vulcanization of the vulcanizing 13.
Vor der Vulkanisierpresse 13 ist nun ein Gehäuse 18 angeordnet, wie es im Rahmen der Figur 1 näher beschrieben ist. Das Gehäuse ist dabei unterhalb des Fördergurtes 17 zumeist im Boden der Produktionshalle versenkt. In diesem Gehäuse erfolgt die Before the vulcanizing 13 now a housing 18 is arranged, as described in detail in the context of Figure 1. The housing is sunk below the conveyor belt 17 mostly in the bottom of the production hall. In this case, the
Durchstrahlungsprüfung des Fördergurtrohlings unter Auswertung mittels eines Radiographic examination of the conveyor belt blank under evaluation by means of a
Prozessrechners. Über eine Kamera kann zudem der Zustand des Fördergurtrohlings anhand eines Bildes, insbesondere einen Röntgenbildes, verfolgt werden. Stimmen die Ist- Werte mit den Soll-Werten unter Einbezug von Grenzwerten überein, wird der auf diese Weise untersuchte Fördergurtrohling in die Vulkanisierpresse überführt und dort vulkanisiert. Die Überführung in die Vulkanisierpresse kann auch dann erfolgen, wenn es Abweichungen von den Soll-Werten gibt, die im Rahmen der Vulkanisation bereinigt werden können. Dies ist beispielsweise möglich, wenn die Durchstrahlungsprüfung ergibt, dass der Fördergurtrohling Lufteinschlüsse 8 (Fig. 1) besitzt, die von den diesbezüglichen Soll-Werten bzw. Grenzwerten abweicht. Unter Anpassung der Vulkanisationsbedingungen können die Lufteinschlüsse zumindest im Rahmen des Grenzwertbereiches minimiert werden. Ein zweiter Wickel 19 nimmt schließlich den vulkanisierten Fördergurt unter Aufwickeln auf. Dieser aufgewickelte fertige Fördergurt kann dann zu seinem Einsatzort auf einer Förderanlage transportiert werden. Process computer. In addition, the condition of the conveyor belt blank can be tracked by means of a camera by means of an image, in particular an X-ray image, by means of a camera. If the actual values coincide with the target values with reference to limit values, the conveyor belt blank examined in this way is transferred to the vulcanizing press and vulcanized there. The transfer into the vulcanizing press can also take place if there are deviations from the desired values, which can be corrected during vulcanization. This is possible, for example, if the radiographic examination shows that the conveyor belt blank has air inclusions 8 (FIG. 1) which deviate from the relevant setpoint values or limit values. By adjusting the vulcanization conditions, the air inclusions can be minimized, at least within the limits of the limit range. A second winding 19 finally takes up the vulcanized conveyor belt with winding. This wound finished conveyor belt can then be transported to its place of use on a conveyor.
Bei dem gesamten Produktionsvorgang zwischen dem ersten Wickel 16 und dem zweiten Wickel 19 wird der Fördergurt 17 außerhalb der Vulkanisierpresse auf Tragrollen 20 und 21 bzw. auf einem Tragrollensystem geführt. Hinsichtlich der Wickeltechnik für den Fördergurt wird beispielsweise auf die Lehre gemäß DE 10 2004 037 217 AI verwiesen. In the entire production process between the first winding 16 and the second winding 19, the conveyor belt 17 outside the vulcanizing on idlers 20 and 21 or guided on a carrying roller system. With regard to the winding technique for the conveyor belt, reference is made, for example, to the teaching according to DE 10 2004 037 217 AI.
Fig. 3 zeigt nun eine Produktionsanlage 22 mit einer Vulkanisierpresse 23, einem ersten Wickel 24 und zweiten Wickel 25. Hinsichtlich diesbezüglicher Details wird auf das Ausführungsbeispiel gemäß Fig. 2 verwiesen. Bei dieser Produktionsanlage ist das Gehäuse 26 nach der Vulkanisierpresse angeordnet, wo die Durchstrahlungsprüfung des vulkanisierten Fördergurtes 27 im Rahmen einer abschließenden Artikelkontrolle erfolgt. 3 now shows a production plant 22 with a vulcanizing press 23, a first winding 24 and a second winding 25. With regard to details relating to this, reference is made to the exemplary embodiment according to FIG. 2. In this production plant, the housing 26 is arranged after the vulcanizing press, where the radiographic examination of the vulcanized conveyor belt 27 takes place in the context of a final article inspection.
Die Gehäuse 18 (Fig. 2) und 26 (Fig. 3) können zweckmäßigerweise auch gemeinsam in einer Produktionsanlage angeordnet werden, so dass vor und nach der Vulkanisation eine Fördergurtkontrolle realisiert wird. The housings 18 (FIG. 2) and 26 (FIG. 3) can also be arranged together in a production plant, so that a conveyor belt control is realized before and after the vulcanization.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
(Teil der Beschreibung) (Part of the description)
1 Gehäuse 1 housing
2 Gehäuseöffnung 2 housing opening
3 Gehäuseöffnung3 housing opening
4 Fördergurt 4 conveyor belt
5 tragseitige Deckplatte 5 load-bearing cover plate
6 laufseitige Deckplatte6 running side cover plate
7 Zugträger 7 tension members
8 Lufteinschlüsse 8 air pockets
9 Strahlenquelle9 radiation source
10 Strahlen 10 rays
11 Sensor (Detektor) 11 sensor (detector)
12 Produktions anläge12 production plants
13 Vulkanisierpresse13 vulcanizing press
14 Oberplatte 14 top plate
15 Unterplatte  15 lower plate
16 erster Wickel 16 first wrap
17 Fördergurt 17 conveyor belt
18 Gehäuse  18 housing
19 zweiter Wickel 19 second wrap
20 Tragrolle 20 carrying roller
21 Tragrolle  21 carrying roller
22 Produktions anläge 22 production plants
23 Vulkanisierpresse23 vulcanizing press
24 erster Wickel24 first wrap
25 zweiter Wickel25 second wrap
26 Gehäuse 26 housing
27 Fördergurt  27 conveyor belt

Claims

Patentansprüche claims
1. Einrichtung zur zerstörungsfreien Inspektion eines Fördergurtes (4, 17, 27) mit einer tragseitigen Deckplatte (5) und laufseitigen Deckplatte (6) aus jeweils einer 1. Device for nondestructive inspection of a conveyor belt (4, 17, 27) with a support-side cover plate (5) and running side cover plate (6) from one each
Kautschukmischung sowie einem eingebetteten Zugträger (7) auf einer  Rubber compound and an embedded tensile carrier (7) on one
Produktionsanlage (12, 22), die aus wenigstens folgenden Anlagenteile besteht:  Production plant (12, 22) consisting of at least the following plant components:
- einer Vulkanisierpresse (13, 23), umfassend eine Oberplatte (14) und - A vulcanizing press (13, 23), comprising a top plate (14) and
Unterplatte (15), die beheizbar sind;  Bottom plate (15) which are heated;
- einem ersten Wickel (16, 24) für den unvulkanisierten Fördergurtrohling, der unter Abwickeln der Vulkanisierpresse (13, 23) zugeführt wird; - a first winding (16, 24) for the unvulcanized Fördergurtrohling, which is supplied under unwinding of the Vulkanisierpresse (13, 23);
- einem zweiten Wickel (19, 25), der nach dem Verlassen der Vulkanisierpresse (13, 23) den vulkanisierten Fördergurt unter Aufwickeln aufnimmt; - A second winding (19, 25) which receives after leaving the Vulkanisierpresse (13, 23) the vulcanized conveyor belt with winding;
- Tragrollen (20, 21) für den Fördergurt (4, 17, 27) sowie - Support rollers (20, 21) for the conveyor belt (4, 17, 27) and
- einem Prozessrechner; dadurch gekennzeichnet, dass vor und/oder nach der Vulkanisierpresse (13, 23) ein Gehäuse (1, 18, 26) angeordnet ist, das mit zwei Gehäuseöffnungen (2, 3) versehen ist, durch die der Fördergurt (4, 17, 27) berührungslos verläuft, wobei innerhalb des Gehäuses eine Strahlenquelle (9) in Richtung der Oberfläche des Fördergurtes Strahlen (10) aussendet, die derart energiereich sind, dass diese den Fördergurt durchstrahlen, wobei ein ebenfalls in dem Gehäuse untergebrachter Sensor (11) die durchgegangenen Strahlen berührungslos erfasst, wobei schließlich der Prozessrechner das Ergebnis der Durchstrahlungsprüfung auswertet, und zwar unter Erfassung der Ist- Werte bei Abgleich mit den Soll- Werten des Fördergurtes. a process computer; characterized in that before and / or after the vulcanizing press (13, 23) a housing (1, 18, 26) is arranged, which is provided with two housing openings (2, 3) through which the conveyor belt (4, 17, 27 ) passes without contact, within the housing a radiation source (9) in the direction of the surface of the conveyor belt emits rays (10) which are so energetic that they pass through the conveyor belt, wherein a likewise housed in the housing sensor (11) the transmitted rays Finally, the process computer evaluates the result of the radiographic examination, namely by recording the actual values when compared with the nominal values of the conveyor belt.
2. Einrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die Strahlenquelle (9) Röntgenstrahlen aussendet. 2. Device according to claim 1, characterized in that the radiation source (9) emits X-rays.
3. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Strahlenquelle (9) eine Röntgenröhre ist. 3. Device according to claim 2, characterized in that the radiation source (9) is an X-ray tube.
4. Einrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die4. Device according to one of claims 1 to 3, characterized in that the
Strahlenquelle (9) im Gehäuse (1, 18, 26) derart angeordnet ist, dass diese die gesamte Fördergurtbreite erfasst. Radiation source (9) in the housing (1, 18, 26) is arranged such that it covers the entire Fördergurtbreite.
5. Einrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass eine versetzbare Strahlenquelle (9) ein Längsstreifensystem des Fördergurtes (4, 17, 27) erfasst. 5. Device according to one of claims 1 to 3, characterized in that a displaceable radiation source (9) detects a longitudinal strip system of the conveyor belt (4, 17, 27).
6. Einrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die6. Device according to one of claims 1 to 5, characterized in that the
Strahlenquelle (9) die tragseitige Deckplatte (5) und der Sensor (11) die laufseitige Deckplatte (6) erfasst. Radiation source (9) the support-side cover plate (5) and the sensor (11) detects the run-side cover plate (6).
7. Einrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Sensor (11) ein Zeilensensor ist. 7. Device according to one of claims 1 to 6, characterized in that the sensor (11) is a line sensor.
8. Einrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der8. Device according to one of claims 1 to 7, characterized in that the
Sensor (11) ein Einzelsensor ist. Sensor (11) is a single sensor.
9. Einrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der9. Device according to one of claims 1 to 7, characterized in that the
Sensor (11) eine Sensorenkette umfasst. Sensor (11) comprises a sensor chain.
10. Einrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die10. Device according to one of claims 1 to 9, characterized in that the
Gehäuseöffnungen (2, 3) für den Fördergurt (4, 17, 27) Breitschlitze sind. Housing openings (2, 3) for the conveyor belt (4, 17, 27) are wide slots.
EP11716533.2A 2010-07-27 2011-04-26 Device for the non-destructive inspection of a conveyor belt during production by means of high-energy rays, in particular x-rays Withdrawn EP2598419A1 (en)

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PCT/EP2011/056537 WO2012013369A1 (en) 2010-07-27 2011-04-26 Device for the non-destructive inspection of a conveyor belt during production by means of high-energy rays, in particular x-rays

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