EP1792860B1 - Vacuum web transport device for guiding a running web - Google Patents

Vacuum web transport device for guiding a running web Download PDF

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Publication number
EP1792860B1
EP1792860B1 EP06024085A EP06024085A EP1792860B1 EP 1792860 B1 EP1792860 B1 EP 1792860B1 EP 06024085 A EP06024085 A EP 06024085A EP 06024085 A EP06024085 A EP 06024085A EP 1792860 B1 EP1792860 B1 EP 1792860B1
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EP
European Patent Office
Prior art keywords
gap
long
conveying device
belt conveying
vacuum
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EP06024085A
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German (de)
French (fr)
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EP1792860A2 (en
EP1792860A3 (en
Inventor
Andreas Pesch
Bernhard Schmitz
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Andritz Kuesters GmbH
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Andritz Kuesters GmbH
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Publication of EP1792860A2 publication Critical patent/EP1792860A2/en
Publication of EP1792860A3 publication Critical patent/EP1792860A3/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/10—Advancing webs by a feed band against which web is held by fluid pressure, e.g. suction or air blast
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0063—Devices for threading a web tail through a paper-making machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/52—Auxiliary process performed during handling process for starting
    • B65H2301/522—Threading web into machine

Definitions

  • the invention relates to a vacuum belt conveyor device for guiding a moving web, in particular a web insertion strip of a paper or board web, according to the preamble of claim 1.
  • Vacuum belt conveyors for guiding a traveling web are used in various industrial plants to securely hold a web in transit. This is especially true for paper and board machines, where the web is transferred from one machine section to another machine section, for example from the wet end to the dryer section or from the dryer section to the finishing section.
  • vacuum belt conveyors in paper or board machines to facilitate threading the paper or board web into a machine for making, finishing or further processing such a web.
  • a narrow ribbon or introduction strip is separated from the running web.
  • This tape is transferred by means of the vacuum belt conveyor, for example, from the end of a machine section to the inlet area of a subsequent machine section.
  • the conveyor device comprises an air-permeable, endless conveyor belt, which runs over two rollers and a suction box or vacuum box. As a result, the insertion strip is sucked and transported to the conveyor belt.
  • a vacuum blower is provided to create vacuum or negative pressure within the suction box.
  • the vacuum blower comprises an impeller having an exhaust passage.
  • the impeller is driven by a suitable motor.
  • the suction box has one or more suction openings, via which the vacuum blower generates negative pressure in the interior of the suction box.
  • a disadvantage is the complex and large-scale construction, which is also maintenance-prone and expensive to manufacture and in operation. The sealing of the suction box is also difficult.
  • a device for transporting and guiding the Bruendauf arrangementsbandes in a paper machine which consists of a arranged around two or more guide rollers conveyor belt, which is permeable to air and within which loop devices are mounted, with which at the one run of the conveyor belt, with the Endiller technologicalband is transported, a negative pressure effect is achieved, whereby the Endiller arrangementsband is stapled to the said run and adhered to it.
  • the negative pressure is generated by air blowing means mounted inside the loop, which comprise guide plates which extend substantially parallel to the plane of the conveyor belt and at which a dynamic negative pressure effect can be generated by air blows, with which the Endiller arrangementsband is stapled to the conveyor belt.
  • the disadvantage is that for blowing the guide plates a fairly large amount of air is required, which is to be diverted and leads to undesirable blowing currents in the area around the device.
  • the object of the invention is therefore to provide a vacuum belt conveyor device for guiding a running web, which is structurally simple and takes up little space.
  • a vacuum belt conveyor device for guiding a moving web, in particular a web insertion strip, created, the device for applying a negative pressure next to a small size has adapted to the purpose of construction, namely a rectangular shape.
  • the suction power is high and adjustable in the longitudinal and transverse directions. Pressure drops between individual suction centers are minimized so that a substantially uniform vacuum across the width and / or length of the conveyor belt is adjustable to hold a web.
  • a nozzle row arrangement of the at least one long-gap ejector extends transversely to the strip running direction and generates an air flow perpendicular to the band. The air flow is then simply downwards derivable, whereby obstructions are minimized by unwanted air currents in the area of the device.
  • a gap space of the at least one long-gap ejector preferably has a section with a narrowed cross-section in order to achieve a high degree of efficiency. If a lower efficiency is sufficient, the gap space can also be formed without a cross-sectional constriction.
  • the at least one long-gap ejector may also work in conjunction with a suction space, for which purpose a partition may be provided within the loop.
  • the partition is preferably arranged in the longitudinal direction of the conveyor belt and at a distance below the run, which is provided for holding the web.
  • an intake space above the dividing wall is separated from an outflow space below the dividing wall.
  • the outflow space is formed in an area above the returning other strand and may be formed open or closed to the outside. If a plurality of long-gap ejectors are arranged one behind the other in the longitudinal direction, transverse dividing walls can also be provided which subdivide the suction space and possibly the outflow space into a plurality of chambers arranged one behind the other. Selectable vacuum profiles along the conveyor belt are adjustable in this way.
  • a passage can be provided in the latter, which passage is provided with an adjustable throttle. About the throttle, a flow rate can be determined and thus set a maximum vacuum level.
  • the arrangement of the at least one long-gap ejector can be carried out vertically working to the conveyor belt or at an angle to the conveyor belt.
  • the at least one long-gap ejector may have a gap space which has a cross-sectional widening on the outflow side.
  • the outflowing air can thereby be given a better distribution.
  • the at least one long-gap ejector may have a gap whose flow path length is selectable. Consequently, the gap space can not only serve to draw in air for generating negative pressure, but can also simultaneously be used for targeted removal of air from the area of application of negative pressure.
  • the air jet injector can be arranged in a converging formed entry region of the at least one long-gap ejector.
  • the orientation of the entry region of the long-gap ejectors or the direction of movement of the conveyor belt is selectable.
  • the inlet region can be arranged transversely or obliquely to the direction of travel or in the direction of travel, with multiple long-gap ejectors being able to be arranged at a distance from or immediately adjacent to one another in order to form selectable negative-pressure fields.
  • only one row of long-gap ejectors for example a center strip, can be provided or several rows of long-gap ejectors can be arranged parallel and spaced from one another, for example two edge strips.
  • Fig, 1 shows a vacuum belt conveyor 1 for guiding a moving web 2, in particular a web insertion strip of a paper or board web.
  • the vacuum belt conveyor device 1 comprises guide rollers 3 and 4, between which a conveyor belt 5 is arranged.
  • the conveyor belt 5 is endlessly guided in a loop 8 with a top strand 6 and a bottom strand 7, such as in Fig. 1 shown.
  • the conveyor belt 5 is permeable to air and consists of a cloth with sufficient permeability or a material web with hole structure.
  • the device 9 for applying a negative pressure is formed by means of at least one long-gap ejector 10, 11 each having an air jet injector 12, 13 with a plurality of air outlet nozzles 14 along the inlet side 15, 16 of the extended nip 17, 18 and the inlet side at a distance below the inside of the is positioned to hold the track provided Trumms 6.
  • subsequent supply lines 21, 22 of the air jet injector 12, 13 of the at least one long-gap ejector 10, 11 fed by an air source, not shown, to inject air into the associated extended nip 17, 18 can.
  • the injected air flows at high speed through the air outlet nozzles 14, whereby air is sucked in on the inlet side 15, which is located in the head-side environment of the at least one long-gap ejector 10, 11.
  • a negative pressure on the inside of the run 6 can be applied by one or more air nozzles are mounted below the belt 5.
  • the pressure of the supplied air is adjustable, which can influence the suction power. If a plurality of long-gap ejectors 10, 11 are arranged one behind the other in the running direction, they can receive the same or different air supply, in order to thereby design individually adjustable suction power profiles in the transport direction T.
  • the long-gap ejector 10 has a substantially rectangular shape and has an air jet injector 12.
  • the jet injector 12 is formed by a nozzle-19, which is arranged in the gap longitudinal direction and generates an air flow in the gap 20 of the extended gap 17.
  • the nozzle assembly 19 is preferably recessed with respect to the inlet side 15, whereby the air sucked in on the inlet side is directed into the gap 20.
  • the air jet injector 12 is seated in a converging inlet region 23 of the long-gap ejector 10, wherein the short side edges 24, 25 of the extended-nip 17 are preferably rounded.
  • the extended nip 17 of the long-gap ejector 10 can delimit the gap 20 with parallel surfaces from the inlet side 15 to an outlet side 26, that is to say extend without a narrowed cross-section (cf. Fig. 12a, 12b ). It is preferred to form the gap 20 with a narrowed cross-section for a high efficiency.
  • the inlet region 23 with converging side surfaces then extends below the air jet injector 12. The constriction in the cross section of the extended nip 17 promotes the formation of a closed flow and thus an advantageous sealing of the Beerstrahlejektors 12.
  • the suction of a long-gap ejector 10, 11 at the inlet side 15 is controllable via the fed air flow and by the shape of the extended gap 17 between the inlet side 15 and outlet side 26. DieShuff des Long gap 17 in the flow direction is selectable and opens up an advantageous discharge of air.
  • the extended gap 17 is preferably formed with an enlarged cross-sectional portion 40, whereby the outflow behavior of the long-gap ejector 10 is improved with respect to a wide air outlet distribution.
  • the extended nip 17 preferably has a section with parallel side surfaces, which can make up about 50 to 80% of the total length of the extended nip 17 in the flow direction between inlet side 15 and outlet side 26. The extended nip 17 thus forms a guide channel for the air flow with a selectable flow path length.
  • a vacuum belt conveyor device comprises the device 9 for applying negative pressure two long-gap ejectors 10, 11, which are arranged in the transport direction T at a distance one behind the other.
  • the number of juxtaposed long-gap ejectors 10, 11 can be selected.
  • the distance from the inside of Trumms 6 is also selectable and depends on the intake. A minimum distance ensures that a suction area, although local, but sufficiently flat.
  • the extent of the extended nip 17 in the longitudinal direction of the gap can be selected as a function of a width of the conveyor belt 5, so that it is sucked over the entire width of the conveyor belt 5.
  • the long-gap ejector (s) 10, 11 can be arranged at selectable locations, that is to say be positioned where a suction characteristic is desired.
  • the respective air jet injector 12 with the associated nozzle assembly 19 preferably extends transversely to the direction of belt travel T and generates an air flow vertically to the belt 5.
  • the long-gap ejectors 10, 11 are arranged here working perpendicular to the conveyor belt 5.
  • a holder 27 For positioning the at least one long-gap ejector 10, 11, a holder 27 is provided, which holds the long-gap ejectors 10, 11 stationary in the loop 8.
  • the long-gap ejectors 10, 11 can furthermore be arranged freestanding in the loop 8.
  • the holder 27 may be formed by a frame of the device 1, in which the guide rollers 3, 4 are mounted.
  • the conveyor belt 5 is moved in the transport direction T by at least one driven deflection roller 3, 4.
  • a drive motor 28 is provided for the deflection roller 3.
  • support grid not shown, may be provided.
  • a partition wall 29 is disposed within the loop 8.
  • the partition wall 29 separates an intake space 33, 34, in which the inlet side 15 of the at least one long-gap ejector 10, 11 is arranged with its respective inlet, from an outflow space 35, 36, in which the outlet side 26 of the at least one long-gap ejector 10, 11 with its respective outlet is arranged.
  • the partition wall 29 preferably extends substantially parallel to the conveyor belt 5.
  • the suction chamber 33, 34 preferably forms an upper chamber and the outflow space 35, 36 a lower chamber, which are bounded laterally by cover plates 31, 32 with respect to the guide rollers 3, 4th
  • the suction chamber 33, 34 is bounded at the top by the run 6 of the air-permeable conveyor belt 5. Alternatively, the limitation can be made upward through a perforated plate on which the run 6 runs out. The distribution as well as the opening widths of the holes allow influencing the negative pressure characteristic on the inside of the run 6.
  • the outflow space 35, 36 is bounded below by the returning Trumm 7.
  • Are more Long-gap ejectors 10, 11 arranged, for example, two as in Fig. 6 2, an intake space 33, 34 and an outflow space 35, 36 are assigned to the long-gap ejectors 10, 11.
  • a transverse partition wall 30 the subdivision of the suction chambers 33, 34 and outflow spaces 35, 36 is possible.
  • the at least one long-gap ejector 10, 11 sucks in the air from the respective intake space 33, 34, whereby an intake field corresponding to the intake space 33, 34 is applied to the inside of the run 6.
  • the distance of the inlet side 15 of the at least one long-gap ejector 10, 11 from the inside of the run 6 can be selected to be greater than in the free-standing long-gap ejector 10, 11 according to Fig. 2 .
  • the inlet side 15 is preferably positioned in a middle region of the suction space 33, 34.
  • an adjustable throttle 37, 38 is arranged in the partition wall 29. Via the throttle 37, 38, a flow rate between a suction chamber 33, 34 and a discharge chamber 35, 36 determined and thus a maximum vacuum level in a suction chamber 33, 34 are set.
  • a maximum negative pressure in the suction space 33, 34 can be defined via such a bypass between intake space 33, 34 and outflow space 35, 36. From a certain negative pressure value, no further negative pressure builds up, since then the bypass flow via the throttle 37, 38 corresponds to the suction flow. A certain pressure difference is adjusted.
  • the vacuum level is also adjustable.
  • Each intake chamber 33, 34 with associated outflow space 35, 36 is preferably associated with a throttle 37, 38.
  • the drive power of the motor 28 can be kept small by limiting the vacuum level.
  • FIG. 8 illustrated fourth embodiment of the vacuum belt conveyor device 1 differs from the in Fig. 7 illustrated third embodiment in that the at least one long-gap ejector 10, 11 is not arranged perpendicular to the conveyor belt 5 working, but is arranged working at an angle to the conveyor belt.
  • the long-gap ejectors 10, 11 are inclined or tilted to the transport plane of the conveyor belt 5.
  • the suction is the outflow with respect to the transport direction T leading or trailing formable.
  • the in the Fig. 9 to 11 illustrated embodiments of the vacuum belt conveyor device 1 relate to different arrangements of at least two long-gap ejectors 10, 11 with respect to the running direction T.
  • a first long-gap ejector 10 is positioned transversely to the direction of travel T, while a second spaced-apart long-gap ejector 11 is arranged obliquely to the transport direction T.
  • the order can also be reversed.
  • both long-gap ejectors 10, 11 are arranged obliquely to the transport direction T.
  • the angle to the transport direction T is selectable depending on the choice of the vacuum profile that can be generated thereby.
  • the long-gap ejectors 10, 11 are arranged in a row one behind the other to form a suction strip 39.
  • This suction strip 39 can, as in FIG Fig. 11 represented form a median strip.
  • an edge strip or edge strips on both sides may be provided.
  • the 12a and 12b show an eighth and ninth embodiment of the vacuum belt conveyor device 1, which differ from the above embodiments in that the extended nip 17, 18 has no cross-sectional constriction, that has parallel side walls. The efficiency is lower, so that the long-gap ejector 10, 11 is preferably arranged closer to the inside of the run 6 of the conveyor belt 5.
  • the eighth Embodiment according to Fig. 12a the comments on the first embodiment according to Fig. 2 corresponding.
  • the ninth embodiment according to Fig. 12b apply the comments on the third and fourth embodiments according to Fig. 7 and 8th corresponding.
  • the vacuum belt conveyor device 1 can also operate rotated through 180 °, i. the negative pressure on the returning Trumm be applied with appropriate rotation of the long-gap ejectors and reversal of the transport direction.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Advancing Webs (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

In a reduced pressure conveyor belt device for guiding a moving sheet (2), with an air-permeable endless transporting belt (5) guided in a loop (8) with upper and lower tracks (6, 7) and a reduced pressure source (9) to fix the sheet to the inside of a track (6), reduced pressure is applied by long gap ejector(s) (10, 11), each having an air jet injector (12) with air outlet nozzles (14) along the inlet side (15, 16) of the long gap (17, 18), under the inside of the sheet fixing track (6).

Description

Die Erfindung betrifft eine Unterdruck-Bandfördervorrichtung zum Führen einer laufenden Bahn, insbesondere eines Bahneinführungsstreifens einer Papier- oder Kartonbahn, nach dem Oberbegriff des Anspruchs 1.The invention relates to a vacuum belt conveyor device for guiding a moving web, in particular a web insertion strip of a paper or board web, according to the preamble of claim 1.

Unterdruck-Bandfördervorrichtungen zum Führen einer laufenden Bahn werden bei unterschiedlichen Industrieanlagen eingesetzt, um eine Bahn auf einem Transportweg sicher halten zu können. Dies gilt insbesondere für Papier- und Kartonmaschinen, wo die Bahn von einer Maschinenpartie zu einer anderen Maschinenpartie überführt wird, beispielsweise von der Nasspartie zur Trockenpartie oder von der Trockenpartie zur Veredelungspartie.Vacuum belt conveyors for guiding a traveling web are used in various industrial plants to securely hold a web in transit. This is especially true for paper and board machines, where the web is transferred from one machine section to another machine section, for example from the wet end to the dryer section or from the dryer section to the finishing section.

Aus DE 100 09 188 A1 ist bekannt, bei Papier- oder Kartonmaschinen Unterdruck-Bandfördervorrichtungen zu benutzen, um das Einfädeln der Papier- oder Kartonbahn in eine Maschine zur Herstellung oder Veredelung oder Weiterverarbeitung einer solchen Bahn zu erleichtern. Bei der Inbetriebnahme einer Papiermaschine oder bei einem Wiederanfahren nach einem Bahnriss wird ein schmaler Bändel oder Einführungsstreifen von der laufenden Bahn abgetrennt. Dieser Bändel wird mit Hilfe der Unterdruck-Bandfördervorrichtung beispielsweise vom Ende einer Maschinensektion zum Einlaufbereich einer nachfolgenden Maschinensektion überführt. Dazu umfasst die Fördervorrichtung ein luftdurchlässiges, endloses Förderband, das über zwei Rollen und über einen Saugkasten oder Unterdruckkasten läuft. Infolgedessen wird der Einführungsstreifen an das Förderband angesaugt und transportiert. Um innerhalb des Saugkastens Vakuum oder Unterdruck zu erzeugen, ist ein Unterdruckgebläse vorgesehen. Das Unterdruckgebläse umfasst ein Laufrad, das einen Auslasskanal aufweist. Das Laufrad wird durch einen geeigneten Motor angetrieben. Der Saugkasten hat eine oder mehrere Absaugöffnungen, über die das Unterdruckgebläse Unterdruck in dem Inneren des Saugkastens erzeugt. Nachteilig ist der aufwendige und großformatige Aufbau, der zudem wartungsanfällig sowie teuer in der Herstellung und im Betrieb ist. Die Abdichtung des Saugkastens ist zudem schwierig.Out DE 100 09 188 A1 It is known to use vacuum belt conveyors in paper or board machines to facilitate threading the paper or board web into a machine for making, finishing or further processing such a web. When a paper machine is put into operation or when it starts again after a web break, a narrow ribbon or introduction strip is separated from the running web. This tape is transferred by means of the vacuum belt conveyor, for example, from the end of a machine section to the inlet area of a subsequent machine section. For this purpose, the conveyor device comprises an air-permeable, endless conveyor belt, which runs over two rollers and a suction box or vacuum box. As a result, the insertion strip is sucked and transported to the conveyor belt. To create vacuum or negative pressure within the suction box, a vacuum blower is provided. The vacuum blower comprises an impeller having an exhaust passage. The impeller is driven by a suitable motor. The suction box has one or more suction openings, via which the vacuum blower generates negative pressure in the interior of the suction box. A disadvantage is the complex and large-scale construction, which is also maintenance-prone and expensive to manufacture and in operation. The sealing of the suction box is also difficult.

Aus DE 35 24 006 A1 ist eine Vorrichtung zum Transport und zur Führung des Bahnendaufführungsbandes in einer Papiermaschine bekannt, die aus einem um zwei oder mehrere Umlenkwalzen angeordneten Transportband besteht, das luftdurchlässig ist und innerhalb dessen Schleife Vorrichtungen angebracht sind, mit denen an dem einen Trumm des Transportbandes, mit dem das Endaufführungsband transportiert wird, eine Unterdruckwirkung erreicht wird, wodurch das Endaufführungsband an das genannte Trumm geheftet und daran festgehalten wird. Der Unterdruck wird erzeugt durch innerhalb der Schleife angebrachte Luftgebläseeinrichtungen, die Leitplatten umfassen, die sich im wesentlichen parallel zur Ebene des Transportbandes erstrecken und an denen sich durch Luftblasungen eine dynamische Unterdruckwirkung erzeugen lässt, mit der das Endaufführungsband an das Transportband geheftet wird. Nachteilig ist, dass zum Anblasen der Leitplatten eine ziemlich große Menge an Luft erforderlich ist, die abzuleiten ist und zu unerwünschten Blasströmen im Bereich um die Vorrichtung führt.Out DE 35 24 006 A1 a device for transporting and guiding the Bahnendaufführungsbandes in a paper machine is known, which consists of a arranged around two or more guide rollers conveyor belt, which is permeable to air and within which loop devices are mounted, with which at the one run of the conveyor belt, with the Endaufführband is transported, a negative pressure effect is achieved, whereby the Endaufführungsband is stapled to the said run and adhered to it. The negative pressure is generated by air blowing means mounted inside the loop, which comprise guide plates which extend substantially parallel to the plane of the conveyor belt and at which a dynamic negative pressure effect can be generated by air blows, with which the Endaufführungsband is stapled to the conveyor belt. The disadvantage is that for blowing the guide plates a fairly large amount of air is required, which is to be diverted and leads to undesirable blowing currents in the area around the device.

Aus DE 299 24 658 U1 ist schließlich eine Vorrichtung zum Befördern und Führen eines Einführstreifens einer Bahn bei einer Papiermaschine der genannten Art bekannt, bei der die Einrichtung zur Erzeugung einer Unterdruckwirkung gekrümmte Luftströmungsführungsflächen längs des Transportbandes aufweist, die in Verbindung mit Foil-Köpfen einen Unterdruck erzeugen. Durch ein Einstellen des Winkels der Luftströmungsführungsflächen kann die Höhe des Unterdrucks reguliert werden. Nachteilig sind entstehende Überdruckbereiche vor den Foil-Köpfen.Out DE 299 24 658 U1 Finally, there is known a device for conveying and guiding an insertion strip of a web in a paper machine of the type mentioned, in which the device for generating a negative pressure effect has curved air flow guide surfaces along the conveyor belt, which generate a negative pressure in connection with Foil heads. By adjusting the angle of the air flow guide surfaces, the height of the negative pressure can be regulated. The disadvantages are overpressure areas in front of the foil heads.

Aufgabe der Erfindung ist es daher, eine Unterdruck-Bandfördervorrichtung zum Führen einer laufenden Bahn zu schaffen, die konstruktiv einfach ist und wenig Platz in Anspruch nimmt.The object of the invention is therefore to provide a vacuum belt conveyor device for guiding a running web, which is structurally simple and takes up little space.

Diese Aufgabe wird durch die Merkmale des kennzeichnenden Teils des Anspruchs 1 gelöst.This object is solved by the features of the characterizing part of claim 1.

Hierdurch wird eine Unterdruck-Bandfördervorrichtung zum Führen einer laufenden Bahn, insbesondere eines Bahneinführungsstreifens, geschaffen, deren Vorrichtung zum Aufbringen eines Unterdrucks neben einer geringen Baugröße eine an den Einsatzzweck angepasste Bauform besitzt, nämlich eine rechteckige Bauform. Dabei ist die Saugleistung hoch und einstellbar in Längs- und Querrichtung. Drucksenken zwischen einzelnen Saugzentren werden minimiert, so dass ein im Wesentlichen gleichmäßiger Unterdruck über die Breite und/oder die Länge des Transportbandes einstellbar ist, um eine Bahn zu halten.In this way, a vacuum belt conveyor device for guiding a moving web, in particular a web insertion strip, created, the device for applying a negative pressure next to a small size has adapted to the purpose of construction, namely a rectangular shape. The suction power is high and adjustable in the longitudinal and transverse directions. Pressure drops between individual suction centers are minimized so that a substantially uniform vacuum across the width and / or length of the conveyor belt is adjustable to hold a web.

Bevorzugt erstreckt sich eine Düsenreihenanordnung des mindestens einen Langspaltejektors quer zur Bandlaufrichtung und erzeugt eine Luftströmung senkrecht zum Band. Die Luftströmung ist dann auch einfach nach unten ableitbar, wodurch Behinderungen durch unerwünschte Luftströmungen im Bereich der Vorrichtung minimiert werden.Preferably, a nozzle row arrangement of the at least one long-gap ejector extends transversely to the strip running direction and generates an air flow perpendicular to the band. The air flow is then simply downwards derivable, whereby obstructions are minimized by unwanted air currents in the area of the device.

Bevorzugt weist ein Spaltraum des mindestens einen Langspaltejektors einen Abschnitt mit einem eingeengten Querschnitt auf, um einen hohen Wirkungsgrad zu erreichen. Ist ein geringerer Wirkungsgrad ausreichend, kann der Spaltraum auch ohne Querschnittsverengung ausgebildet sein.A gap space of the at least one long-gap ejector preferably has a section with a narrowed cross-section in order to achieve a high degree of efficiency. If a lower efficiency is sufficient, the gap space can also be formed without a cross-sectional constriction.

Der mindestens eine Langspaltejektor kann auch in Verbindung mit einem Ansaugraum arbeiten, wozu eine Trennwand innerhalb der Schleife vorgesehen sein kann. Die Trennwand ist vorzugsweise in Längsrichtung des Transportbandes und mit Abstand unterhalb des Trumms, das zum Festhalten der Bahn vorgesehen ist, angeordnet. Dadurch wird ein Ansaugraum oberhalb der Trennwand von einem Abströmraum unterhalb der Trennwand getrennt. Der Abströmraum wird in einem Bereich oberhalb des zurücklaufenden anderen Trumms gebildet und kann nach außen offen oder geschlossen ausgebildet sein. Sind mehrere Langspaltejektoren in Längsrichtung hintereinander angeordnet, können ferner auch Quertrennwände vorgesehen sein, die den Ansaugraum und gegebenenfalls den Abströmraum in mehrere hintereinander angeordnete Räume unterteilt. Wählbare Unterdruckprofile längs des Transportbandes sind auf diese Weise einstellbar.The at least one long-gap ejector may also work in conjunction with a suction space, for which purpose a partition may be provided within the loop. The partition is preferably arranged in the longitudinal direction of the conveyor belt and at a distance below the run, which is provided for holding the web. As a result, an intake space above the dividing wall is separated from an outflow space below the dividing wall. The outflow space is formed in an area above the returning other strand and may be formed open or closed to the outside. If a plurality of long-gap ejectors are arranged one behind the other in the longitudinal direction, transverse dividing walls can also be provided which subdivide the suction space and possibly the outflow space into a plurality of chambers arranged one behind the other. Selectable vacuum profiles along the conveyor belt are adjustable in this way.

Ist eine Trennwand vorgesehen, kann in dieser ein Durchgang vorgesehen sein, der mit einer einstellbaren Drossel versehen ist. Über die Drossel kann eine Durchflussmenge bestimmt und damit ein maximales Unterdruckniveau eingestellt werden.If a partition wall is provided, a passage can be provided in the latter, which passage is provided with an adjustable throttle. About the throttle, a flow rate can be determined and thus set a maximum vacuum level.

Die Anordnung des mindestens einen Langspaltejektors kann senkrecht arbeitend zum Transportband erfolgen oder in einem Winkel zum Transportband.The arrangement of the at least one long-gap ejector can be carried out vertically working to the conveyor belt or at an angle to the conveyor belt.

Der mindestens eine Langspaltejektor kann einen Spaltraum besitzen, der abströmseitig eine Querschnittserweiterung aufweist. Die ausströmende Luft kann hierdurch eine bessere Verteilung erfahren.The at least one long-gap ejector may have a gap space which has a cross-sectional widening on the outflow side. The outflowing air can thereby be given a better distribution.

Der mindestens eine Langspaltejektor kann einen Spaltraum besitzen, dessen Strömungsweglänge wählbar ist. Der Spaltraum kann folglich nicht nur zum Ansaugen von Luft zur Unterdruckerzeugung dienen, sondern kann gleichzeitig auch zum gezielten Wegführen der Luft vom Bereich des Aufbringens von Unterdruck eingesetzt werden. Um das Ansaugen weiter zu verbessern, kann der Luftstrahlinjektor in einem konvergierend gestalteten Eintrittsbereich des mindestens einen Langspaltejektors angeordnet sein.The at least one long-gap ejector may have a gap whose flow path length is selectable. Consequently, the gap space can not only serve to draw in air for generating negative pressure, but can also simultaneously be used for targeted removal of air from the area of application of negative pressure. In order to further improve the suction, the air jet injector can be arranged in a converging formed entry region of the at least one long-gap ejector.

Die Ausrichtung des Eintrittsbereiches des oder der Langspaltejektoren zur Laufrichtung des Transportbandes ist wählbar. Der Eintrittsbereich kann quer oder schräg zur Laufrichtung oder in Laufrichtung angeordnet sein, wobei bei mehreren Langspaltejektoren diese mit Abstand oder unmittelbar benachbart zueinander angeordnet sein können, um wählbare Unterdruckfelder auszubilden. Insbesondere dann, wenn mehrere Langspaltejektoren in Laufrichtung einen Unterdruckstreifen in Laufrichtung bilden, kann nur ein Reihe aus Langspaltejektoren, beispielsweise ein Mittelstreifen, vorgesehen sein oder mehrere Reihen von Langspaltejektoren parallel und beabstandet zueinander angeordnet sein, beispielsweise zwei Randstreifen.The orientation of the entry region of the long-gap ejectors or the direction of movement of the conveyor belt is selectable. The inlet region can be arranged transversely or obliquely to the direction of travel or in the direction of travel, with multiple long-gap ejectors being able to be arranged at a distance from or immediately adjacent to one another in order to form selectable negative-pressure fields. In particular, when a plurality of long-gap ejectors form a negative pressure strip in the direction of travel, only one row of long-gap ejectors, for example a center strip, can be provided or several rows of long-gap ejectors can be arranged parallel and spaced from one another, for example two edge strips.

Weitere Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung und den Unteransprüchen zu entnehmen.Further embodiments of the invention are described in the following description and the dependent claims.

Die Erfindung wird nachstehend anhand der in den beigefügten Abbildungen dargestellten Ausführungsbeispiele näher erläutert.

  • Fig. 1 zeigt schematisch eine Draufsicht einer Unterdruck-Bandfördervorrichtung,
  • Fig. 2 zeigt einen Schnitt A-A nach Fig. 1 für eine Unterdruck-Bandfördervorrichtung gemäß einem ersten Ausführungsbeispiel,
  • Fig. 3 zeigt schematisch eine Draufsicht eines Langspaltejektors der Unterdruck-Bandfördervorrichtung gemäß Fig. 2,
  • Fig. 4a zeigt einen Schnitt B-B des Langspaltejektors gemäß Fig. 3,
  • Fig. 4b zeigt vergrößert den Bereich X von Fig. 4a,
  • Fig. 5 zeigt eine perspektivische Ansicht des Langspaltejektors gemäß Fig. 3,
  • Fig. 6 zeigt einen Schnitt A-A nach Fig. 1 für eine Unterdruck-Bandfördervorrichtung gemäß einem zweiten Ausführungsbeispiel,
  • Fig. 7 zeigt einen Schnitt A-A nach Fig. 1 für eine Unterdruck-Bandfördervorrichtung gemäß einem dritten Ausführungsbeispiel,
  • Fig. 8 zeigt einen Schnitt A-A nach Fig. 1 für eine Unterdruck-Bandfördervorrichtung gemäß einem vierten Ausführungsbeispiel,
  • Fig. 9 zeigt schematisch eine Draufsicht einer Unterdruck-Bandfördervorrichtung gemäß einem fünften Ausführungsbeispiel,
  • Fig. 10 zeigt schematisch eine Draufsicht einer Unterdruck-Bandfördervorrichtung gemäß einem sechsten Ausführungsbeispiel,
  • Fig. 11 zeigt schematisch eine Draufsicht einer Unterdruck-Bandfördervorrichtung gemäß einem siebten Ausführungsbeispiel,
  • Fig. 12a und 12b zeigen jeweils einen Schnitt A-A nach Fig. 1 für eine Unterdruck-Bandfördervorrichtung gemäß einem achten und neunten Ausführungsbeispiel.
The invention will be explained in more detail with reference to the embodiments illustrated in the accompanying drawings.
  • Fig. 1 shows schematically a top view of a vacuum belt conveyor device,
  • Fig. 2 shows a section AA after Fig. 1 for a vacuum belt conveyor according to a first embodiment,
  • Fig. 3 schematically shows a plan view of a long-gap ejector of the vacuum belt conveyor according to Fig. 2 .
  • Fig. 4a shows a section BB of the long-gap ejector according to Fig. 3 .
  • Fig. 4b shows enlarged the area X of Fig. 4a .
  • Fig. 5 shows a perspective view of the long-gap ejector according to Fig. 3 .
  • Fig. 6 shows a section AA after Fig. 1 for a vacuum belt conveyor according to a second embodiment,
  • Fig. 7 shows a section AA after Fig. 1 for a negative pressure belt conveyor according to a third embodiment,
  • Fig. 8 shows a section AA after Fig. 1 for a negative pressure belt conveyor according to a fourth embodiment,
  • Fig. 9 schematically shows a plan view of a vacuum belt conveyor according to a fifth embodiment,
  • Fig. 10 schematically shows a plan view of a vacuum belt conveyor according to a sixth embodiment,
  • Fig. 11 schematically shows a plan view of a vacuum belt conveyor according to a seventh embodiment,
  • Fig. 12a and 12b each show a section AA after Fig. 1 for a negative pressure belt conveyor according to eighth and ninth embodiments.

Fig, 1 zeigt eine Unterdruck-Bandfördervorrichtung 1 zum Führen einer laufenden Bahn 2, insbesondere eines Bahneinführungsstreifens einer Papier- oder Kartonbahn. Die Unterdruck-Bandfördervorrichtung 1 umfasst Umlenkwalzen 3 und 4, zwischen denen ein Transportband 5 angeordnet ist. Das Transportband 5 ist endlos in einer Schleife 8 geführt mit einem Obertrumm 6 und einem Untertrumm 7, wie beispielsweise in Fig. 1 gezeigt. Das Transportband 5 ist luftdurchlässig und besteht dazu aus einem Tuch mit ausreichender Permeabilität oder einer Materialbahn mit Lochstruktur. Fig, 1 shows a vacuum belt conveyor 1 for guiding a moving web 2, in particular a web insertion strip of a paper or board web. The vacuum belt conveyor device 1 comprises guide rollers 3 and 4, between which a conveyor belt 5 is arranged. The conveyor belt 5 is endlessly guided in a loop 8 with a top strand 6 and a bottom strand 7, such as in Fig. 1 shown. The conveyor belt 5 is permeable to air and consists of a cloth with sufficient permeability or a material web with hole structure.

Innerhalb der Schleife 8 ist eine Vorrichtung 9 zum Aufbringen eines Unterdrucks an der Innenseite eines der Trumms des Transportbandes, hier des Obertrumms 6, zum Festhalten der Bahn 2 an dem Transportband 5 angeordnet. Die Vorrichtung 9 zum Aufbringen eines Unterdrucks wird mittels mindestens eines Langspaltejektors 10, 11 gebildet, der jeweils einen Luftstrahlinjektor 12, 13 mit einer Vielzahl von Luftaustrittsdüsen 14 entlang der Eintrittsseite 15, 16 des Langspalts 17, 18 aufweist und eintrittsseitig mit Abstand unterhalb der Innenseite des zum Festhalten der Bahn vorgesehenen Trumms 6 positioniert ist. Über seitlich am Transportband 5 anschließende Zuführungsleitungen 21, 22 wird der Luftstrahlinjektor 12, 13 des mindestens einen Langspaltejektors 10, 11 von einer nicht dargestellten Luftquelle gespeist, um Luft in den zugehörigen Langspalt 17, 18 injizieren zu können. Die eingespeiste Luft strömt mit hoher Geschwindigkeit durch die Luftaustrittsdüsen 14, wodurch Luft an der Eintrittsseite 15 angesaugt wird, die sich in der kopfseitigen Umgebung des mindestens einen Langspaltejektors 10, 11 befindet. Auf diese Weise kann ein Unterdruck an der Innenseite des Trumms 6 aufgebracht werden, indem eine oder mehrere Luftdüsen unterhalb des Bandes 5 angebracht werden. Der Druck der zugeführten Luft ist einstellbar, wodurch Einfluss auf die Saugleistung genommen werden kann. Sind mehrere Langspaltejektoren 10, 11 in Laufrichtung hintereinander angeordnet, können diese gleiche oder unterschiedliche Luftzufuhr erhalten, um dadurch individuell einstellbare Saugleistungsprofile in Transportrichtung T zu gestalten.Within the loop 8 is a device 9 for applying a negative pressure on the inside of one of the run of the conveyor belt, here the top strand 6, arranged to hold the web 2 to the conveyor belt 5. The device 9 for applying a negative pressure is formed by means of at least one long-gap ejector 10, 11 each having an air jet injector 12, 13 with a plurality of air outlet nozzles 14 along the inlet side 15, 16 of the extended nip 17, 18 and the inlet side at a distance below the inside of the is positioned to hold the track provided Trumms 6. About laterally on the conveyor belt 5 subsequent supply lines 21, 22 of the air jet injector 12, 13 of the at least one long-gap ejector 10, 11 fed by an air source, not shown, to inject air into the associated extended nip 17, 18 can. The injected air flows at high speed through the air outlet nozzles 14, whereby air is sucked in on the inlet side 15, which is located in the head-side environment of the at least one long-gap ejector 10, 11. In this way, a negative pressure on the inside of the run 6 can be applied by one or more air nozzles are mounted below the belt 5. The pressure of the supplied air is adjustable, which can influence the suction power. If a plurality of long-gap ejectors 10, 11 are arranged one behind the other in the running direction, they can receive the same or different air supply, in order to thereby design individually adjustable suction power profiles in the transport direction T.

Die Ausbildung des mindestens einen Langspaltejektors 10, 11 ist in den Figuren 3 bis 5 für den einen Langspaltejektor 10 im Einzelnen dargestellt. Die nachfolgenden Ausführungen gelten für alle anderen Langspaltejektoren entsprechend. Danach besitzt der Langspaltejektor 10 eine im Wesentlichen rechteckige Bauform und weist einen Luftstrahlinjektor 12 auf. Der Luftstrahlinjektor 12 wird von einem Düsenstock-19 gebildet, der in Spaltlängsrichtung angeordnet ist und eine Luftströmung in dem Spaltraum 20 des Langspalts 17 erzeugt. Der Düsenstock 19 ist gegenüber der Eintrittsseite 15 vorzugsweise versenkt angeordnet, wodurch die eintrittsseitig angesaugte Luft in den Spaltraum 20 gelenkt wird. Vorzugsweise sitzt der Luftstrahlinjektor 12 in einem konvergierenden Eintrittsbereich 23 des Langspaltejektors 10, wobei die kurzen Seitenkanten 24, 25 des Langspalts 17 vorzugsweise gerundet sind.The formation of the at least one long-gap ejector 10, 11 is in the FIGS. 3 to 5 for the one long-gap ejector 10 shown in detail. The following explanations apply to all other long-gap ejectors accordingly. Thereafter, the long-gap ejector 10 has a substantially rectangular shape and has an air jet injector 12. The jet injector 12 is formed by a nozzle-19, which is arranged in the gap longitudinal direction and generates an air flow in the gap 20 of the extended gap 17. The nozzle assembly 19 is preferably recessed with respect to the inlet side 15, whereby the air sucked in on the inlet side is directed into the gap 20. Preferably, the air jet injector 12 is seated in a converging inlet region 23 of the long-gap ejector 10, wherein the short side edges 24, 25 of the extended-nip 17 are preferably rounded.

Der Langspalt 17 des Langspaltejektors 10 kann den Spaltraum 20 mit parallelen Flächen von der Eintrittsseite 15 bis zu einer Austrittsseite 26 begrenzen, also sich ohne eingeengten Querschnitt erstrecken (vgl. Fig. 12a, 12b). Bevorzugt ist, für einen hohen Wirkungsgrad den Spaltraum 20 mit einem eingeengten Querschnitt auszubilden. Der Eintrittsbereich 23 mit konvergierenden Seitenflächen erstreckt sich dann bis unter den Luftstrahlinjektor 12. Die Verengung im Querschnitt des Langspalts 17 fördert die Bildung einer geschlossenen Strömung und damit eine vorteilhafte Abdichtung des Luftstrahlejektors 12. Die Ansaugleistung eines Langspaltejektors 10, 11 an der Eintrittsseite 15 ist steuerbar über die eingespeiste Luftströmung und durch die Form des Langspalts 17 zwischen Eintrittsseite 15 und Austrittsseite 26. Die Länge des Langspalts 17 in Strömungsrichtung ist wählbar und eröffnet eine vorteilhafte Ableitung der Luft.The extended nip 17 of the long-gap ejector 10 can delimit the gap 20 with parallel surfaces from the inlet side 15 to an outlet side 26, that is to say extend without a narrowed cross-section (cf. Fig. 12a, 12b ). It is preferred to form the gap 20 with a narrowed cross-section for a high efficiency. The inlet region 23 with converging side surfaces then extends below the air jet injector 12. The constriction in the cross section of the extended nip 17 promotes the formation of a closed flow and thus an advantageous sealing of the Luftstrahlejektors 12. The suction of a long-gap ejector 10, 11 at the inlet side 15 is controllable via the fed air flow and by the shape of the extended gap 17 between the inlet side 15 and outlet side 26. Die Länge des Long gap 17 in the flow direction is selectable and opens up an advantageous discharge of air.

An der Austrittsseite 26 ist der Langspalt 17 vorzugsweise mit einem erweiterten Querschnittsabschnitt 40 ausgebildet, wodurch das Abströmverhalten des Langspaltejektors 10 in Bezug auf eine breite Luftaustrittsverteilung verbessert wird. Auch bei eingeengtem Querschnitt des Langspaltes eingangs- und/oder ausgangsseitig besitzt der Langspalt 17 vorzugsweise einen Abschnitt mit parallelen Seitenflächen, der etwa 50 bis 80 % der Gesamtlänge des Langspalts 17 in Strömungsrichtung zwischen Eintrittsseite 15 und Austrittsseite 26 ausmachen kann. Der Langspalt 17 bildet insoweit einen Leitkanal für die Luftströmung mit einer wählbaren Strömungsweglänge.At the outlet side 26, the extended gap 17 is preferably formed with an enlarged cross-sectional portion 40, whereby the outflow behavior of the long-gap ejector 10 is improved with respect to a wide air outlet distribution. Even with a narrowed cross-section of the extended nip input and / or output side, the extended nip 17 preferably has a section with parallel side surfaces, which can make up about 50 to 80% of the total length of the extended nip 17 in the flow direction between inlet side 15 and outlet side 26. The extended nip 17 thus forms a guide channel for the air flow with a selectable flow path length.

Bei dem in Fig. 2 dargestellten ersten Ausführungsbeispiel einer Unterdruck-Bandfördervorrichtung umfasst die Vorrichtung 9 zum Aufbringen von Unterdruck zwei Langspaltejektoren 10, 11, die in Transportrichtung T mit Abstand hintereinander angeordnet sind. Die Anzahl der nebeneinander angeordneten Langspaltejektoren 10, 11 ist wählbar. Der Abstand von der Innenseite des Trumms 6 ist ebenfalls wählbar und richtet sich nach der Ansaugleistung. Ein Mindestabstand stellt sicher, dass ein Ansaugbereich zwar lokal, aber hinreichend flächig ist. Die Erstreckung des Langspalts 17 in Spaltlängsrichtung ist wählbar in Abhängigkeit einer Breite des Transportbandes 5, damit über die gesamte Breite des Transportbandes 5 angesaugt wird. In Transportrichtung T kann der oder die Langspaltejektoren 10, 11 an wählbaren Stellen angeordnet sein, also dort positioniert sein, wo eine Ansaugcharakteristik erwünscht ist. Der jeweilige Luftstrahlinjektor 12 mit dem zugehörigen Düsenstock 19 erstreckt sich dazu vorzugsweise quer zur Bandlaufrichtung T und erzeugt eine Luftströmung senkrecht zum Band 5. Die Langspaltejektoren 10, 11 sind hier senkrecht zum Transportband 5 arbeitend angeordnet.At the in Fig. 2 illustrated first embodiment of a vacuum belt conveyor device comprises the device 9 for applying negative pressure two long-gap ejectors 10, 11, which are arranged in the transport direction T at a distance one behind the other. The number of juxtaposed long-gap ejectors 10, 11 can be selected. The distance from the inside of Trumms 6 is also selectable and depends on the intake. A minimum distance ensures that a suction area, although local, but sufficiently flat. The extent of the extended nip 17 in the longitudinal direction of the gap can be selected as a function of a width of the conveyor belt 5, so that it is sucked over the entire width of the conveyor belt 5. In the transport direction T, the long-gap ejector (s) 10, 11 can be arranged at selectable locations, that is to say be positioned where a suction characteristic is desired. The respective air jet injector 12 with the associated nozzle assembly 19 preferably extends transversely to the direction of belt travel T and generates an air flow vertically to the belt 5. The long-gap ejectors 10, 11 are arranged here working perpendicular to the conveyor belt 5.

Für eine Positionierung des mindestens einen Langspaltejektors 10, 11 ist eine Halterung 27 vorgesehen, die die Langspaltejektoren 10, 11 ortsfest in der Schleife 8 hält. Die Langspaltejektoren 10, 11 können darüber hinaus freistehend in der Schleife 8 angeordnet sein. Die Halterung 27 kann von einem Rahmengestell der Vorrichtung 1 gebildet werden, in dem auch die Umlenkwalzen 3, 4 gelagert sind.For positioning the at least one long-gap ejector 10, 11, a holder 27 is provided, which holds the long-gap ejectors 10, 11 stationary in the loop 8. The long-gap ejectors 10, 11 can furthermore be arranged freestanding in the loop 8. The holder 27 may be formed by a frame of the device 1, in which the guide rollers 3, 4 are mounted.

Das Transportband 5 wird in Transportrichtung T durch mindestens eine angetriebene Umlenkwalze 3, 4 bewegt. Gemäß Fig. 2 ist hierzu für die Umlenkwalze 3 ein Antriebsmotor 28 vorgesehen. Zur Stützung des Transportbandes 5 auf der Schleife zwischen den Umlenkwalzen 3, 4 können nicht dargestellte Stützgitter vorgesehen sein.The conveyor belt 5 is moved in the transport direction T by at least one driven deflection roller 3, 4. According to Fig. 2 For this purpose, a drive motor 28 is provided for the deflection roller 3. To support the conveyor belt 5 on the loop between the guide rollers 3, 4 support grid, not shown, may be provided.

Gemäß einem in Fig. 6 dargestellten zweiten Ausführungsbeispiel der Unterdruck-Bandfördervorrichtung ist innerhalb der Schleife 8 eine Trennwand 29 angeordnet. Die Trennwand 29 trennt einen Ansaugraum 33, 34, in dem die Eintrittsseite 15 des mindestens einen Langspaltejektors 10, 11 mit seinem jeweiligen Einlass angeordnet ist, von einem Abströmraum 35, 36, in dem die Austrittsseite 26 des mindestens einen Langspaltejektors 10, 11 mit seinem jeweiligen Auslass angeordnet ist. Die Trennwand 29 erstreckt sich dazu vorzugsweise im Wesentlichen parallel zum Transportband 5. Der Ansaugraum 33, 34 bildet vorzugsweise eine obere Kammer und der Abströmraum 35, 36 eine untere Kammer, die seitlich begrenzt sind durch Abdeckbleche 31, 32 gegenüber den Umlenkwalzen 3, 4.According to a in Fig. 6 illustrated second embodiment of the vacuum belt conveyor device, a partition wall 29 is disposed within the loop 8. The partition wall 29 separates an intake space 33, 34, in which the inlet side 15 of the at least one long-gap ejector 10, 11 is arranged with its respective inlet, from an outflow space 35, 36, in which the outlet side 26 of the at least one long-gap ejector 10, 11 with its respective outlet is arranged. The partition wall 29 preferably extends substantially parallel to the conveyor belt 5. The suction chamber 33, 34 preferably forms an upper chamber and the outflow space 35, 36 a lower chamber, which are bounded laterally by cover plates 31, 32 with respect to the guide rollers 3, 4th

Der Ansaugraum 33, 34 wird nach oben begrenzt durch den Trumm 6 des luftdurchlässigen Transportbands 5. Alternativ kann die Begrenzung nach oben durch ein Lochblech erfolgen, auf dem der Trumm 6 geführt läuft. Die Verteilung als auch die Öffnungsweiten der Löcher erlauben eine Einflussnahme auf die Unterdruckcharakteristik an der Innenseite des Trumms 6. Der Abströmraum 35, 36 wird nach unten begrenzt durch den rücklaufenden Trumm 7. Sind mehrere Langspaltejektoren 10, 11 angeordnet, beispielsweise zwei wie in Fig. 6 dargestellt, werden den Langspaltejektoren 10, 11 ein Ansaugraum 33, 34 und ein Abströmraum 35, 36 zugeordnet. Mittels einer Quertrennwand 30 ist die Unterteilung der Ansaugräume 33, 34 und Abströmräume 35, 36 möglich. Der mindestens eine Langspaltejektor 10, 11 saugt aus dem jeweiligen Ansaugraum 33, 34 die Luft an, wodurch ein Ansaugfeld entsprechend des Ansaugraumes 33, 34 an der Innenseite des Trumms 6 aufgebracht wird. Der Abstand der Eintrittsseite 15 des mindestens einen Langspaltejektors 10, 11 von der Innenseite des Trumms 6 kann größer gewählt werden als bei dem freistehenden Langspaltejektor 10, 11 gemäß Fig. 2. Um die Luft aus dem jeweiligen Ansaugraum 33, 34 möglichst gleichmäßig anzusaugen, wird die Eintrittsseite 15 vorzugsweise in einem mittleren Bereich des Ansaugraumes 33, 34 positioniert. Im Übrigen gelten die vorstehenden Ausführungen zum ersten Ausführungsbeispiel hier entsprechend.The suction chamber 33, 34 is bounded at the top by the run 6 of the air-permeable conveyor belt 5. Alternatively, the limitation can be made upward through a perforated plate on which the run 6 runs out. The distribution as well as the opening widths of the holes allow influencing the negative pressure characteristic on the inside of the run 6. The outflow space 35, 36 is bounded below by the returning Trumm 7. Are more Long-gap ejectors 10, 11 arranged, for example, two as in Fig. 6 2, an intake space 33, 34 and an outflow space 35, 36 are assigned to the long-gap ejectors 10, 11. By means of a transverse partition wall 30, the subdivision of the suction chambers 33, 34 and outflow spaces 35, 36 is possible. The at least one long-gap ejector 10, 11 sucks in the air from the respective intake space 33, 34, whereby an intake field corresponding to the intake space 33, 34 is applied to the inside of the run 6. The distance of the inlet side 15 of the at least one long-gap ejector 10, 11 from the inside of the run 6 can be selected to be greater than in the free-standing long-gap ejector 10, 11 according to Fig. 2 , In order to suck in the air from the respective suction space 33, 34 as uniformly as possible, the inlet side 15 is preferably positioned in a middle region of the suction space 33, 34. Incidentally, the above statements on the first embodiment apply here accordingly.

Gemäß einem in Fig. 7 dargestellten dritten Ausführungsbeispiel der Unterdruck-Bandfördervorrichtung 1 ist in der Trennwand 29 eine einstellbare Drossel 37, 38 angeordnet. Über die Drossel 37, 38 kann eine Durchflussmenge zwischen einem Ansaugraum 33, 34 und einem Abströmraum 35, 36 bestimmt und damit ein maximales Unterdruckniveau in einem Ansaugraum 33, 34 eingestellt werden. Ein Maximalunterdruck in dem Ansaugraum 33, 34 kann über einen solchen Bypass zwischen Ansaugraum 33, 34 und Abströmraum 35, 36 festgelegt werden. Ab einem bestimmten Unterdruckwert baut sich kein weiterer Unterdruck mehr auf, da dann die Bypassströmung über die Drossel 37, 38 der Absaugströmung entspricht. Eine bestimmte Druckdifferenz wird eingeregelt. Das Unterdruckniveau ist zudem einstellbar. Die Gefahr, dass insbesondere nassere Papier- oder Kartonbahnen am Transportband 5 durch ein zu starkes Ansaugen beschädigt werden, besteht deshalb nicht. Jedem Ansaugraum 33, 34 mit zugehörigem Abströmraum 35, 36 ist vorzugsweise eine Drossel 37, 38 zugeordnet. Außerdem kann die Antriebsleistung des Motors 28 durch eine Begrenzung des Unterdruckniveaus klein gehalten werden. Im Übrigen gelten die vorstehenden Ausführungen zu dem ersten und zweiten Ausführungsbeispiel entsprechend.According to a in Fig. 7 illustrated third embodiment of the vacuum belt conveyor 1, an adjustable throttle 37, 38 is arranged in the partition wall 29. Via the throttle 37, 38, a flow rate between a suction chamber 33, 34 and a discharge chamber 35, 36 determined and thus a maximum vacuum level in a suction chamber 33, 34 are set. A maximum negative pressure in the suction space 33, 34 can be defined via such a bypass between intake space 33, 34 and outflow space 35, 36. From a certain negative pressure value, no further negative pressure builds up, since then the bypass flow via the throttle 37, 38 corresponds to the suction flow. A certain pressure difference is adjusted. The vacuum level is also adjustable. The risk that especially wet paper or board webs are damaged on the conveyor belt 5 by over-suction, therefore, does not exist. Each intake chamber 33, 34 with associated outflow space 35, 36 is preferably associated with a throttle 37, 38. In addition, the drive power of the motor 28 can be kept small by limiting the vacuum level. Incidentally, the above statements apply to the first and second embodiments accordingly.

Das in Fig. 8 dargestellte vierte Ausführungsbeispiel der Unterdruck-Bandfördervorrichtung 1 unterscheidet sich von dem in Fig. 7 dargestellten dritten Ausführungsbeispiel dadurch, dass der mindestens eine Langspaltejektor 10, 11 nicht senkrecht zum Transportband 5 arbeitend angeordnet ist, sondern in einem Winkel zum Transportband arbeitend angeordnet ist. Die Langspaltejektoren 10, 11 stehen geneigt bzw. gekippt zur Transportebene des Transportbandes 5. Die Ansaugung ist der Abströmung gegenüber der Transportrichtung T voreilend oder nacheilend ausbildbar. Im Übrigen gelten die vorstehenden Ausführungen zu den anderen Ausführungsbeispielen hier entsprechend.This in Fig. 8 illustrated fourth embodiment of the vacuum belt conveyor device 1 differs from the in Fig. 7 illustrated third embodiment in that the at least one long-gap ejector 10, 11 is not arranged perpendicular to the conveyor belt 5 working, but is arranged working at an angle to the conveyor belt. The long-gap ejectors 10, 11 are inclined or tilted to the transport plane of the conveyor belt 5. The suction is the outflow with respect to the transport direction T leading or trailing formable. Incidentally, the above statements on the other embodiments apply here accordingly.

Die in den Fig. 9 bis 11 dargestellten Ausführungsbeispiele der Unterdruck-Bandfördervorrichtung 1 betreffen unterschiedliche Anordnungen von mindestens zwei Langspaltejektoren 10, 11 in Bezug auf die Laufrichtung T. Bei dem fünften Ausführungsbeispiel gemäß Fig. 9 ist ein erster Langspaltejektor 10 quer zur Laufrichtung T positioniert, während ein zweiter mit Abstand positionierter Langspaltejektor 11 schräg zur Transportrichtung T angeordnet ist. Die Reihenfolge kann auch umgekehrt sein. Bei dem sechsten Ausführungsbeispiel gemäß Fig. 10 sind beide Langspaltejektoren 10, 11 schräg zur Transportrichtung T angeordnet. Der Winkel zur Transportrichtung T ist wählbar je nach Wahl des Unterdruckprofils, das dadurch erzeugt werden kann. Bei dem siebten Ausführungsbeispiel gemäß Fig. 11 sind die Langspaltejektoren 10, 11 in einer Reihe hintereinander angeordnet unter Ausbildung eines Absaugstreifens 39. Dieser Absaugstreifen 39 kann wie in Fig. 11 dargestellt einen Mittelstreifen bilden. Alternativ können ein Randstreifen oder beidseitig Randstreifen vorgesehen sein. Im Übrigen gelten die vorstehenden Ausführungen zu den Ausführungsbeispielen eins bis vier hier entsprechend.The in the Fig. 9 to 11 illustrated embodiments of the vacuum belt conveyor device 1 relate to different arrangements of at least two long-gap ejectors 10, 11 with respect to the running direction T. In the fifth embodiment according to Fig. 9 a first long-gap ejector 10 is positioned transversely to the direction of travel T, while a second spaced-apart long-gap ejector 11 is arranged obliquely to the transport direction T. The order can also be reversed. In the sixth embodiment according to Fig. 10 both long-gap ejectors 10, 11 are arranged obliquely to the transport direction T. The angle to the transport direction T is selectable depending on the choice of the vacuum profile that can be generated thereby. According to the seventh embodiment according to Fig. 11 the long-gap ejectors 10, 11 are arranged in a row one behind the other to form a suction strip 39. This suction strip 39 can, as in FIG Fig. 11 represented form a median strip. Alternatively, an edge strip or edge strips on both sides may be provided. Incidentally, the above statements apply to the embodiments one to four here accordingly.

Die Fig.12a und 12b zeigen ein achtes und neuntes Ausführungsbeispiel der Unterdruck-Bandfördervorrichtung 1, die sich von den vorstehenden Ausführungen dadurch unterscheiden, dass der Langspalt 17, 18 keine Querschnittsverengung aufweist, also parallele Seitenwände aufweist. Der Wirkungsgrad ist geringer, so dass der Langspaltejektor 10, 11 vorzugsweise näher an der Innenseite des Trumms 6 des Transportbandes 5 angeordnet ist. Im Übrigen gelten für das achte Ausführungsbeispiel gemäß Fig. 12a die Ausführungen zum ersten Ausführungsbeispiel gemäß Fig. 2 entsprechend. Für das neunte Ausführungsbeispiel gemäß Fig. 12b gelten die Ausführungen zum dritten und vierten Ausführungsbeispiel gemäß Fig. 7 und 8 entsprechend.The 12a and 12b show an eighth and ninth embodiment of the vacuum belt conveyor device 1, which differ from the above embodiments in that the extended nip 17, 18 has no cross-sectional constriction, that has parallel side walls. The efficiency is lower, so that the long-gap ejector 10, 11 is preferably arranged closer to the inside of the run 6 of the conveyor belt 5. Incidentally, apply to the eighth Embodiment according to Fig. 12a the comments on the first embodiment according to Fig. 2 corresponding. According to the ninth embodiment according to Fig. 12b apply the comments on the third and fourth embodiments according to Fig. 7 and 8th corresponding.

Gemäß einem weiteren nicht dargestellten Ausführungsbeispiel kann die Unterdruck-Bandfördervorrichtung 1 auch um 180° gedreht arbeiten, d.h. der Unterdruck an dem rücklaufenden Trumm unter entsprechender Drehung der Langspaltejektoren und Umkehrung der Transportrichtung aufgebracht werden.According to another embodiment, not shown, the vacuum belt conveyor device 1 can also operate rotated through 180 °, i. the negative pressure on the returning Trumm be applied with appropriate rotation of the long-gap ejectors and reversal of the transport direction.

Claims (23)

  1. Vacuum belt conveying device for guiding a moving web (2), in particular a web threading strip of a paper or board web, having an air-permeable transport belt (5) guided endlessly in a loop (8) with an upper run (6) and a lower run (7), and a device (9) arranged within the loop (8) for applying a vacuum to the inner side of one of the runs (6) of the transport belt (5) in order to hold the web (2) firmly on the transport belt (5), characterized in that the device (9) for applying a vacuum is formed by means of at least one long-gap ejector (10, 11), which in each case has an air jet injector (12) having a large number of air outlet nozzles (14) for producing an air stream in the gap space of the long gap along the inlet side (15, 16) of the long gap (17, 18) and, on the inlet side, is positioned at a distance under the inner side of the run (6) which is provided to hold the web (2) firmly.
  2. Vacuum belt conveying device according to Claim 1, characterized in that the at least one long-gap ejector (10, 11) produces a flow in a gap space (17, 18) via a nozzle stock (19) arranged in the gap longitudinal direction.
  3. Vacuum belt conveying device according to Claim 2, characterized in that the gap space (20) is formed with a narrowed cross section.
  4. Vacuum belt conveying device according to one of Claims 1 to 3, characterized in that within the loop (8) there is arranged a dividing wall (29), which divides a suction chamber (33, 34), in which the inlet side (15, 16) of the at least one long-gap ejector (10, 11) is arranged, from an outward flow chamber (35, 36), in which an outlet side (26) of the at least one long-gap ejector (10, 11) is arranged.
  5. Vacuum belt conveying device according to Claim 4, characterized in that the suction chamber (33, 34) and outward flow chamber (35, 36) have transverse walls (30) between adjacent long-gap ejectors (10, 11).
  6. Vacuum belt conveying device according to Claim 4 or 5, characterized in that the suction chamber (33, 34) can be connected to the outward flow chamber (35, 36) via at least one restrictor (37, 38) in order to limit a vacuum.
  7. Vacuum belt conveying device according to Claim 6, characterized in that the at least one restrictor (37, 38) is arranged in a dividing wall (29) between suction chamber (33, 34) and outward flow chamber (35, 36) in order to control a flow rate.
  8. Vacuum belt conveying device according to one of Claims 1 to 7, characterized in that the at least one long-gap ejector (10, 11) is arranged to operate at right angles to the transport belt (5).
  9. Vacuum belt conveying device according to one of Claims 1 to 8, characterized in that the at least one long-gap ejector (10, 11) is arranged to operate at an angle to the transport belt (5).
  10. Vacuum belt conveying device according to one of Claims 1 to 9, characterized in that the at least one long-gap ejector (10, 11) in each case has a gap space (20) which has an outlet portion (40) with a widened cross section.
  11. Vacuum belt conveying device according to one of Claims 1 to 10, characterized in that the at least one long-gap ejector (10, 11) in each case has a gap space (20) with a selectable flow path length.
  12. Vacuum belt conveying device according to Claim 9, characterized in that the flow path length of the gap space (20) having a narrowed cross section is 50 to 80% of the total flow path length of the gap space (20).
  13. Vacuum belt conveying device according to one of Claims 1 to 12, characterized in that the air jet injector (12) is arranged in a converging inlet region (23) of a long-gap ejector (10, 11).
  14. Vacuum belt conveying device according to one of Claims 1 to 13, characterized in that the at least one long-gap ejector (10, 11) is arranged transversely with respect to the running direction of the transport belt (5).
  15. Vacuum belt conveying device according to one of Claims 1 to 14, characterized in that the at least one long-gap ejector (10, 11) is arranged obliquely with respect to the running direction (T) of the transport belt (5).
  16. Vacuum belt conveying device according to one of Claims 1 to 14, characterized in that a plurality of long-gap ejectors (10,11) are arranged adjacent to one another in the running direction (T) of the transport belt (5).
  17. Vacuum belt conveying device according to Claim 16, characterized in that, depending on the running length of the transport belt (5), at least two long-gap ejectors (10, 11) are arranged at a distance from each other in the running direction (T) of the transport belt (5).
  18. Vacuum belt conveying device according to Claim 16 or 17, characterized in that the long-gap ejectors (10, 11) are arranged with the gap longitudinal direction in the running direction (T) of the transport belt (5), forming at least one vacuum strip (39).
  19. Vacuum belt conveying device according to one of Claims 1 to 18, characterized in that the at least one long-gap ejector (10, 11) has an inlet region with rounded short side edges (24).
  20. Vacuum belt conveying device according to one of Claims 1 to 19, characterized in that the at least one air jet injector (10, 11) can be fed via feed lines (21, 22) arranged laterally on the transport belt (5).
  21. Vacuum belt conveying device according to one of Claims 1 to 20, characterized in that an outward flow chamber (35, 36) can be encapsulated for controllable dissipation of the air flowing out.
  22. Vacuum belt conveying device according to one of Claims 1 to 21, characterized in that air can be supplied to the at least one long-gap ejector (10, 11) via a feed line (21, 22), and the pressure of the air can be adjusted.
  23. Vacuum belt conveying device according to Claim 22, characterized in that a plurality of long-gap ejectors (10, 11) are arranged adjacent to one another, and air can be supplied to the feed lines (21, 22) at a respectively adjustable pressure.
EP06024085A 2005-11-30 2006-11-21 Vacuum web transport device for guiding a running web Active EP1792860B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005057426A DE102005057426A1 (en) 2005-11-30 2005-11-30 Compact reduced pressure conveyor belt device for guiding moving sheet, e.g. in paper or cardboard production machine, has long gap ejector(s) for applying reduced pressure to endless belt to fix sheet

Publications (3)

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EP1792860A2 EP1792860A2 (en) 2007-06-06
EP1792860A3 EP1792860A3 (en) 2009-03-11
EP1792860B1 true EP1792860B1 (en) 2011-09-14

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EP06024085A Active EP1792860B1 (en) 2005-11-30 2006-11-21 Vacuum web transport device for guiding a running web

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US (1) US7625465B2 (en)
EP (1) EP1792860B1 (en)
AT (1) ATE524608T1 (en)
CA (1) CA2569924C (en)
DE (1) DE102005057426A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI116229B (en) * 2004-04-29 2005-10-14 Metso Paper Inc Vacuum belt conveyor with side guide for web forming machine
US9029731B2 (en) * 2007-01-26 2015-05-12 Electro Scientific Industries, Inc. Methods and systems for laser processing continuously moving sheet material
US8398063B2 (en) * 2008-12-10 2013-03-19 Gross International Americas, Inc. Ribbon transport apparatus and method
US8388246B2 (en) * 2009-09-15 2013-03-05 Xerox Corporation Web driven vacuum transport
US9944037B2 (en) * 2011-05-12 2018-04-17 Pouch Pac Innovations, Llc Apparatus for simultaneously separating a plurality of pouches, transferring the pouches and method of same
DE102016222201B4 (en) * 2016-11-11 2021-10-21 Koenig & Bauer Ag Conveyor
DE102017200260B4 (en) * 2017-01-10 2021-05-12 Koenig & Bauer Ag Conveyor
SG10202111394XA (en) 2017-04-13 2021-12-30 Senti Biosciences Inc Combinatorial cancer immunotherapy
DE102017215374B4 (en) * 2017-09-01 2021-04-29 Koenig & Bauer Ag Conveyor
WO2019079502A1 (en) 2017-10-18 2019-04-25 Oldcastle Precast, Inc. Stormwater filtration system with internal bypass pipe
KR20210094534A (en) 2018-10-17 2021-07-29 센티 바이오사이언시스, 인코포레이티드 Combination Cancer Immunotherapy
US11419898B2 (en) 2018-10-17 2022-08-23 Senti Biosciences, Inc. Combinatorial cancer immunotherapy

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3763571A (en) * 1970-04-27 1973-10-09 Vits Maschinenbau Gmbh Apparatus for contactless guiding of webs
US3889801A (en) * 1972-10-26 1975-06-17 Bell & Howell Co Vacuum conveyor belt with air bearing
US4542842A (en) * 1983-10-31 1985-09-24 Crown Zellerbach Corporation Pneumatic conveying method for flexible webs
US4551203A (en) * 1984-04-02 1985-11-05 Valmet Oy Method and arrangement for guiding a paper web from the press section to the drying section
FI69145C (en) * 1984-07-05 1985-12-10 Valmet Oy ANORDINATION AND ENCLOSURE OF TRANSPORT AND STATIONING OF BANANS SPETSDRAGNINGSBAND
DE19601989C2 (en) * 1996-01-20 2002-01-31 Voith Paper Patent Gmbh Arrangement for guiding a material web
FI112267B (en) * 1998-09-29 2003-11-14 Metso Paper Inc A device in a paper machine for transporting and guiding a web threading tape
DE19929018A1 (en) 1999-06-25 2000-12-28 Rovema Gmbh Packaging device
DE29910850U1 (en) * 1999-06-25 2000-11-23 Voith Sulzer Papiertechnik Patent GmbH, 89522 Heidenheim Vacuum conveyor
DE20001082U1 (en) * 2000-01-22 2000-04-13 Langbein & Engelbracht GmbH, 44879 Bochum Arrangement for guiding a flexible material web
ATE315125T1 (en) * 2000-02-26 2006-02-15 Voith Paper Patent Gmbh VACUUM BELT CONVEYOR
DE10009188A1 (en) * 2000-02-26 2001-08-30 Voith Paper Patent Gmbh Vacuum belt conveyor for paper web threading in production line, has vacuum blower positioned within the air-pervious endless belt loop to generate low pressure at inner side of conveying path
FI118017B (en) * 2004-03-11 2007-05-31 Metso Paper Inc Suppressor belt conveyor for inserting a conveyor belt into a forming machine

Also Published As

Publication number Publication date
ATE524608T1 (en) 2011-09-15
CA2569924A1 (en) 2007-05-30
DE102005057426A1 (en) 2007-05-31
EP1792860A2 (en) 2007-06-06
CA2569924C (en) 2013-12-24
EP1792860A3 (en) 2009-03-11
US20070119895A1 (en) 2007-05-31
US7625465B2 (en) 2009-12-01

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