EP0469570B1 - Transport apparatus for particulate material with a curved section - Google Patents

Transport apparatus for particulate material with a curved section Download PDF

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Publication number
EP0469570B1
EP0469570B1 EP91112861A EP91112861A EP0469570B1 EP 0469570 B1 EP0469570 B1 EP 0469570B1 EP 91112861 A EP91112861 A EP 91112861A EP 91112861 A EP91112861 A EP 91112861A EP 0469570 B1 EP0469570 B1 EP 0469570B1
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EP
European Patent Office
Prior art keywords
belts
curve
transport
transport apparatus
pulleys
Prior art date
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Expired - Lifetime
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EP91112861A
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German (de)
French (fr)
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EP0469570A1 (en
Inventor
Giancarlo Masini
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Civiemme SRL
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Civiemme SRL
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/16Delivering or advancing articles from machines; Advancing articles to or into piles by contact of one face only with moving tapes, bands, or chains
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/30Orientation, displacement, position of the handled material
    • B65H2301/31Features of transport path
    • B65H2301/312Features of transport path for transport path involving at least two planes of transport forming an angle between each other
    • B65H2301/3121L-shaped
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/30Orientation, displacement, position of the handled material
    • B65H2301/34Modifying, selecting, changing direction of displacement

Definitions

  • the above invention relates to a transport device with a curvilinear course, for transporting a scale-like stream of signatures.
  • the conveyor device according to the invention which has a curved course, has a curve of 90 ° with its center at point X.
  • the curved track is provided for the transport of a stream of signatures from sheet signatures one above the other.
  • the signature stream is in a manner not shown, for. B. formed after a rotary printing press and promoted in the direction of arrow F.
  • the transport device 1 consists of a transport path which rises from the inside of the curves to the outside thereof, that is to say is inclined with respect to the horizontal plane Y.
  • the transport track 2 has a plurality of elastic endless belts 3, which are made of rubber or similar material, advantageously with a circular cross section.
  • the belts are arranged parallel to one another and are deflected around two deflection points consisting of conical deflection rollers 4. These deflecting rollers have circumferential grooves 5.
  • the deflection rollers 4 and the connecting cylinders 7 and 8 are rotatably mounted and driven in a manner not shown by a motor and are supported by a curved inner profile 9 and an outer profile 10.
  • a sheet metal receiving sector 11 is fastened to the curved profiles 9 and 10, this sheet metal sector has an increasing profile to the outside corresponding to the transport path 2 and the upper generatrix of the conical deflecting rollers 4.
  • the profiles 9 and 10 and the sector 11 form the frame of the transport device 1.
  • the curvilinear course of the individual belts 3 extends along polygonal lines which are arranged concentrically to one another and are determined by guide disks 12 which are arranged along the beam-like lines R. .
  • the ray lines R radiate outward from the center X of the curve.
  • the disks 12 are mounted on tab-like sheet metal strips 13, which are punched out of the sheet metal sector 11 and bent downward, as shown in FIG. 3.
  • the belts 3 form a conveyor track 2 for the sheet stack.
  • the conveyor track 2 is designed to rise from the inside to the outside in the manner of an exaggerated curve.
  • the pulleys 12 are hollow and are freely rotatable on a pivot pin 14 by means of a ball bearing 15 (FIG. 6).
  • the bolt 14 is connected to a punched-out sheet metal bracket 13 via a screw 16 and a clamping nut 17.
  • the reference numeral 18 denotes a threaded pin which is screwed into the punched-out sheet metal tab 13 and into the bolt 14 in order to prevent this bolt from being rotated unintentionally.
  • the upper edge of the pulleys 12 has a chamfer 19 which is aligned parallel to the transport path 2. In this way, the sheet signatures, which are schematically identified by 20 in FIGS.
  • the angle alpha according to FIG. 6 between the axis 21 of the pulleys 12 and the transport plane 2 has a value of less than 90 °, e.g. B. an angle of 70 °.
  • two radially arranged struts 23 are provided, which are connected to the inner curved profile 9 and the outer curved profile 10. Each strut 23 receives a guide pulley 12 for each belt 3.
  • the sheet-metal sector 11 in the form of an arc is formed by individual radial sectors 24, which are also shown in FIG. 1 and are firmly connected to the inner curved profile 9.
  • the outer end 25 of the radial sectors 24 is connected via a screw 26 to an elastic tab-shaped sheet metal part 27.
  • the sheet metal part has a vertically arranged window-like opening 28.
  • the window-like opening 28 is penetrated by a screw 29 which can be screwed into a threaded bore 30 of the outer curvilinear profile 10.
  • the transport device 1 can be equipped with supports (not shown) or can be attached to the incoming or outgoing transport devices.
  • the curved transport route according to the invention has the following mode of operation:
  • the stream of sheet signatures moves along the transport device 1 along the transport path 2, which is formed by transport belts 3.
  • the transport belts 3 take up the signatures during the entire conveying movement between the deflection rollers 4.
  • the arch signatures with the chamfered edges 19 appear on the pulleys 12 the pulleys 12 in connection, the rotary movement of the pulleys contributes to the advancing movement of the sheet signatures, without thereby affecting the fan-like opening and closing movement of the signatures.
  • the inclination angle of the transport path 2 was increased. Such a change in the inclination of the transport path 2 is due to the division of the sheet metal sector 11 into individual ones Radial sectors 24 and possible by utilizing the elasticity of the belts.
  • the inclination of the transport path 2 with respect to the horizontal plane Y is changed by loosening the screws 29 and lifting the radially arranged components 24, which are successively adjusted to the desired height (inclination). The screw 29 is then tightened again.
  • lifting by 10 to 15 mm is sufficient to ensure perfect transport at speeds of up to around 60 m / min for sheet signatures consisting of different materials.
  • the number of belts and the number of radially arranged pulleys can be changed according to the radius of the curve or the sheet signatures to be conveyed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Fish Paste Products (AREA)
  • Structure Of Belt Conveyors (AREA)

Description

Die vorstehende Erfindung betrifft eine Transportvorrichtung mit kurvenfoermigem Verlauf, zum Transport eines schuppenartigen Signaturenstroms.The above invention relates to a transport device with a curvilinear course, for transporting a scale-like stream of signatures.

In Druckereien bestehen die Foerderbahnen, welche z. B. eine Rotationsdruckmaschine mit unterschiedlichen Verarbeitungseinrichtungen der Signaturen verketten, z. B. Verteilerstationen und Stapeleinrichtungen, aus geradlinigen Transporteinrichtungen sowie kurvenfoermigen Verlauf aufweisenden Transportvorrichtungen. Aufgrund der unterschiedlichen Umfangsgeschwindigkeiten zwischen innenliegenden Bahnbereichen und aussenliegenden Bahnbereichen der kurvenfoermig ausgebildeten Transporteinrichtungen, werden die gefoerderten Signaturen- oder Bogensignaturen bei Durchlaufen der kurvenfoermigen Foerderbahn einer faecherartig erfolgenden Oeffnungsbewegung bzw. einer Schliessbewegung ausgesetzt.
Es ist bereits eine Transporteinrichtung mit kurvenfoermigem Verlauf bekanntgeworden, bei der eine Vielzahl von konischen Rollen vorgesehen ist, die nebeneinander angeordnet sind und eine Auflageflaeche bilden, die in der Ebene des Kurveneinlaufs sowie des Kurvenauslaufs liegt. Bei dieser kurvenfoermigen Verlauf aufweisenden Transportvorrichtung ist jede Rolle mit der folgenden Rolle ueber einen endlosen Riemen verbunden. Die Auflageebene fuer den Signaturenstrom wird von der Mantelflaeche der konischen Rollen gebildet. Diese bekannte Vorrichtung weist den schwerwiegenden Nachteil auf, dass bei Bruch eines Endlosriemens der Antrieb entlang der Foerderstrecke unterbrochen wird. Es ist folglich ein Eingriff einer Bedienungsperson notwendig, die das Anhalten der Rotationsdruckmaschine bewirkt. Ähnliche mit Kurvenförmigen Verlauf Transporteinrichtungen sind aus den US-A-2 729 324, US-A-1 254 941 und GB-A-2 220 903 bekannt.
Bei Zunahme der Foerdergeschwindigkeit der Signaturen bei Durchfuehrung der faecherartigen gegenseitigen Verschiebung zwischen den Signaturen fuehren die Bogensignaturen zusaetzliche Relativbewegungen aus, die durch Einwirken der Zentrifugalkraft auf den Signaturenstrom hervorgerufen werden. Es konnte ferner festgestellt werden, dass bei gleicher Stromgeschwindigkeit unterschiedliche Gleitbewegungen zwischen den einzelnen Signaturen in Abhaengigkeit von der Beschaffenheit der Bogensignaturen: z. B. Papierart, Menge und Verteilung der Druckfarbe, Format und Seitenzahl der Signaturen auftraten. Ein Abwandern der Bogensignaturen zur Aussenseite der Bahnkurve wird bei den bekannten Vorrichtungen auch von der glatten Oberflaeche der konischen Rollen beguenstigt.
Es ist Aufgabe der Erfindung, eine Transportvorrichtung der genannten Art mit kurvenfoermigem Verlauf, fuer den Transport von schuppenartig angeordneten Bogensignaturen vorzuschlagen, mit der eine kontinuierliche und sichere Befoerderung des Signaturenstrom gewaehrleistet wird, wobei im Signaturenstrom beim Auslauf aus der Vorrichtung eine einwandfreie, schuppenfoermige Anordnung der Bogensignaturen, auch bei hohen Transportgeschwindigkeiten erhalten bleibt, auch bei unterschiedlicher Bogenbeschaffenheit, was Papierqualitaet, Format, Seitenzahl und Gewicht der Bogensignaturen anbetrifft.
Diese Aufgabe wird erfindungsgemaess mit einer Vorrichtung fuer den Transport von Bogenssignaturen bei bogenfoermigem Bandverlauf dadurch geloest, dass die Transportbahn von einer Vielzahl elastischer, endloser Riemen gebildet ist, die parallel zueinander angeordnet sind, dass die gekruemmte Transportbahn von der Kurveninnenseite zur Kurvenaussenseite ansteigt, dass die Riemen von angetriebenen Umlenkrollen in Bewegung gesetzt werden, deren Durchmesser von der Kurveninnenseite zur Kurvenaussenseite zunimmt, dass die Umlenkrollen Nuten zur Aufnahme der Riemen aufweisen und dass die Riemen von Scheiben gefuehrt werden, die in Gruppen zusammengefasst auf Linien (R) angeordnet sind, die strahlenfoermig vom Mittelpunkt (X) der Kurve zu deren Aussenseite verlaufen.
Es wird eine formstabile Transportbahn geschaffen und zwischen Transportbahn und Signaturen werden Stauungen und Stoerungen dadurch vermieden, dass die Fuehrungsscheiben fuer die Riemen auf einem segmentartig geformten Blech angeordnet sind und dieser Blechsektor von der Kurveninnenseite zur Kurvenaussenseite steigend vorgesehen ist und Lagerlaschen aufweist, die durch Stanzen des Blechsektors erstellt werden und nach unten abgebogen sind. Die Riemenscheiben sind frei drehbar angeordnet, und Scheibendrehachse und Transportbahn schliessen einen Winkel von weniger als 90° ein. Die Oberkante jeder Riemenscheibe ist parallel zur Transportebene durch Vorsehung einer Anfasung ausgerichtet.
Es wird eine einfache und schnell montierbare Lagerung fuer die Riemenscheiben dadurch geschaffen, dass die Riemenscheiben hohl ausgebildet sind und unter Zwischenschaltung eines Kugellagers von einem Drehbolzen aufgenommen sind, der ueber eine Schraubverbindung mit der Lasche des Blechsektors verbunden ist.
Es wird ein einwandfreier Foerderstrom fuer die Bogensignaturen auch bei hohen Transportgeschwindikgeiten oder leicht rutschbaren Bogensignaturen dadurch erreicht, dass der Blechsektor in unterschiedliche, sich radial erstreckende Segmente unterteilt ist, wobei jedes Segment die notwendigen Riemenscheiben aufnimmt, die auf einem Linienstrahl angeordnet sind und dass die radialen Segmente fest an ihrem zum Kurvenzentrum gerichteten Ende gelagert sind und am aeusseren Ende mit einer hoeheneinstellbaren Lagerung versehen sind.
Die neigbare Foerderbahn kann dadurch hoehenjustiert werden, indem das aeussere Ende der radialen Blechsegmente eine Haltelasche aufweist, die mit einer vertikalen, fensterartigen Oeffnung versehen ist und diese Oeffnung von einer Spannschraube durchdrungen ist, die an einem starren Bauteil der Transportvorrichtung festlegbar ist.
Man erreicht eine sichere Fuehrung des zuruecklaufenden Trumms der Endlosriemen mit einer beschraenkten Anzahl von Bauteilen dadurch, dass unterhalb der Riemenfuehrungsscheiben der Transportbahn zwischen den Umlenkrollen zwei Querstreben angeordnet sind, die strahlenartig verlaufen und eine Anzahl Fuehrungsscheiben aufweisen, um die ruecklaufenden Riementrumme zu fuehren.
Man erreicht eine einwandfreie faecherartige Oeffnungs- und Schliessbewegung der Bogensignaturen auf der bogenfoermigen Transportvorrichtung dadurch, dass auf den zwei Seiten eines mittigen Transportriemens oder der Mittellinie der Transportbahn die gleiche Anzahl von Transportriemen vorgesehen ist.
Es wird ein gleichmaessiger Strom der Blattsignatur fuer jegliches Format dadurch beibehalten, dass zu beiden Seiten des mittigen Transportriemens oder auf beiden Seiten der Mittellinie der Transportbahn ein von Riemen zu Riemen zunehmender Abstand gegenueber dem mittigen Riemen oder der Mittellinie gegen die Umlenkrollenenden hin vorgesehen ist.
Es wird auf einfache Weise eine Anschlussverbindung zwischen der Ebene des Zufuehrfoerderers und der Ebene des Abfuehrfoerderers und der geneigten Foerderbahn dadurch geschaffen, dass die kurvenfoermig ausgebildete Foerderbahn angetriebene Anschlussrollen aufweist, die in der Naehe der Umlenkrollen vorgesehen sind.
Die mit der vorstehenden Erfindung erzielbaren Vorteile bestehen im wesentlichen darin, dass jeder Transportriemen die gesamte Foerderbahn zwischen den Umlenkrollen ueberbrueckt und bei Bruch eines Foerderriemens keine Unterbrechung der Transportbahn erfolgt. Die Elastizitaet der Transportriemen ermoeglicht ein einfaches Aendern der Neigung der Transportbahn gegenueber der Horizontalen. Auf der Ruecklaufstrecke der unteren Riementrumme sind zwei radiale Umlenkungen fuer jeden Riemen ausreichend. Ein weiterer Vorteil ist darin zu sehen, dass der kurvenfoermige Verlauf der Foerderriemen frei waehlbar ist und von Fall zu Fall ein entsprechender Kurvenradius und/oder ein gekruemmter Verlauf, unter Beruecksichtigung des Grundrisses der Druckerei und Beruecksichtigung von vorhandenen Saeulen, Ecken oder anderen Hindernissen auswaehlbar ist. Es wird eine einwandfreie Bewegung des Signaturenstromes durch Verwendung von Transportriemen erreicht, die einen mehreckigen Verlauf unter Verwendung von wenigen Radiallagern beschreiben. Die radialen Umlenkpunkte werden durch die Transportriemen angetrieben und foerdern den Strom der Bodensignaturen. Die Erfindung wird nun anhand von zwei Ausfuehrungsbeispielen beschrieben und in den Zeichnungen dargestellt.
Es zeigen:

  • Fig. 1 eine Draufsicht auf die erfindungsgemaesse Foerdervorrichtung mit kurvenfoermigem Verlauf;
  • Fig. 2 eine Ansicht der Transportvorrichtung nach Fig. 1 von unten gesehen;
  • Fig. 3 einen Querschnitt entlang der Linie III-III der Fig. 1;
  • Fig. 4 und 5 eine Schnittdarstellung im Detail und in vergroessertem Maßstab einer Foerderbahn mit veraenderbarem Neigungswinkel; und
  • Fig. 6 in vergroessertem Maßstab eine Schnittdarstellung in Seitenansicht von zwei Umlenkscheiben entsprechend der Erfindung.
In printing plants there are conveyor tracks, which e.g. B. concatenate a rotary printing press with different processing facilities of the signatures, e.g. B. distribution stations and stacking devices, from straight-line transport devices and curve-shaped transport devices. Due to the different circumferential speeds between the inner web areas and the outer web areas of the curved transport devices, the supported signature or sheet signatures become when passing through the curvilinear Conveyor track exposed to a fan-like opening movement or a closing movement.
A transport device with a curvilinear course has already become known, in which a large number of conical rollers are provided which are arranged next to one another and form a support surface which lies in the plane of the curve entry and the curve exit. In this curve-shaped transport device, each roller is connected to the following roller by an endless belt. The support level for the signature stream is formed by the surface of the conical rollers. This known device has the serious disadvantage that if an endless belt breaks, the drive along the conveyor line is interrupted. An operator intervention is therefore required to cause the rotary printing press to stop. Similar curvilinear conveyors are known from US-A-2 729 324, US-A-1 254 941 and GB-A-2 220 903.
As the conveying speed of the signatures increases when the fan-like mutual displacement between the signatures is carried out, the sheet signatures carry out additional relative movements which are caused by the action of the centrifugal force on the signature flow. It was also found that different sliding movements between the individual signatures depend on the same current speed on the nature of the arch signatures: e.g. B. type of paper, quantity and distribution of the printing ink, format and number of pages of the signatures occurred. A migration of the sheet signatures to the outside of the path curve is also favored in the known devices by the smooth surface of the conical rollers.
It is an object of the invention to propose a transport device of the type mentioned with a curvilinear course for the transport of scale signatures arranged with a scale, with which a continuous and safe transport of the signature stream is ensured, with a perfect, scale-like arrangement of the signature stream when it leaves the device Sheet signatures, even at high transport speeds, are retained, even with different sheet quality, in terms of paper quality, format, number of pages and weight of the sheet signatures.
This object is achieved according to the invention with a device for the transport of sheet signatures in the case of a sheet-like band course in that the transport path is formed by a plurality of elastic, endless belts which are arranged parallel to one another, in that the curved transport path rises from the inside of the curve to the outside of the curve, that Belts of driven pulleys are set in motion Diameter increases from the inside of the curve to the outside of the curve, that the deflection rollers have grooves for receiving the belts and that the belts are guided by disks, which are arranged in groups on lines (R), which radiate from the center (X) of the curve to the outside run.
A dimensionally stable transport path is created and between the transport path and signatures, congestion and disturbances are avoided by arranging the guide pulleys for the belts on a segment-shaped sheet and this sheet sector is provided rising from the inside of the curve to the outside of the curve and has bearing flaps which are stamped by the Sheet metal sectors are created and are bent downwards. The belt pulleys are freely rotatable, and the pulley rotation axis and transport path form an angle of less than 90 °. The upper edge of each pulley is aligned parallel to the transport plane by providing a chamfer.
A simple and quickly mountable mounting for the belt pulleys is created in that the belt pulleys are hollow and, with the interposition of a ball bearing, are received by a pivot bolt which is connected to the tab of the sheet metal sector via a screw connection.
A perfect conveying flow for the sheet signatures is achieved even at high transport speeds or easily slippable sheet signatures in that the sheet metal sector is divided into different, radially extending segments, each segment taking up the necessary pulleys, which are arranged on a line beam, and that the radial ones Segments are firmly supported at their end facing the curve center and are provided with a height-adjustable bearing at the outer end.
The inclinable conveyor track can be adjusted in height in that the outer end of the radial sheet metal segments has a holding tab which is provided with a vertical, window-like opening and this opening is penetrated by a tension screw which can be fixed on a rigid component of the transport device.
A safe guiding of the returning run of the endless belts with a limited number of components is achieved in that two cross struts are arranged below the belt guiding disks of the transport path between the deflecting rollers, which run like a beam and have a number of guiding disks in order to guide the returning belt towers.
A flawless fan-like opening and closing movement of the arch signatures on the arch-shaped surface is achieved Transport device in that the same number of transport belts is provided on the two sides of a central transport belt or the center line of the transport track.
A uniform flow of the sheet signature for any format is maintained in that on both sides of the central transport belt or on both sides of the center line of the transport path there is a distance increasing from belt to belt with respect to the central belt or the center line towards the deflection roller ends.
A connection between the level of the feed conveyor and the level of the discharge conveyor and the inclined conveyor track is created in a simple manner in that the curved conveyor track has driven connecting rollers which are provided in the vicinity of the deflection rollers.
The advantages that can be achieved with the above invention essentially consist in the fact that each transport belt bridges the entire conveyor track between the deflection rollers and if a conveyor belt breaks, the conveyor track is not interrupted. The elasticity of the conveyor belts enables the inclination of the conveyor track to be changed easily with respect to the horizontal. There are two on the return route of the lower belt tower radial deflections are sufficient for each belt. Another advantage can be seen in the fact that the curve-shaped course of the conveyor belts can be freely selected and, from case to case, a corresponding curve radius and / or a curved course can be selected, taking into account the floor plan of the print shop and considering existing columns, corners or other obstacles . A perfect movement of the signature stream is achieved by using transport belts that describe a polygonal course using a few radial bearings. The radial deflection points are driven by the transport belts and promote the flow of the floor signatures. The invention will now be described with reference to two exemplary embodiments and shown in the drawings.
Show it:
  • Figure 1 is a plan view of the conveyor device according to the invention with a curved course.
  • FIG. 2 is a view of the transport device according to FIG. 1 seen from below;
  • Fig. 3 is a cross section along the line III-III of Fig. 1;
  • 4 and 5 show a sectional illustration in detail and on an enlarged scale of a conveyor track with changeable angle of inclination; and
  • Fig. 6 in an enlarged scale a sectional view in side view of two deflection plates according to the invention.

Die kurvenfoermigen Verlauf aufweisende Foerdervorrichtung gemaess der Erfindung weist im dargestellten Beispiel eine Kurve von 90° auf mit ihrem Zentrum im Punkt X. Die Kurvenbahn ist fuer den Transport von einem Signaturenstrom aus schuppenfoermig uebereinanderliegenden Bogensignaturen vorgesehen. Der Signaturenstrom wird in nicht dargestellter Weise, z. B. nach einer Rotationsdruckmaschine gebildet und in Richtung des Pfeils F gefoerdert. Die Transportvorrichtung 1 besteht aus einer Transportbahn, die von der Innenseite der Kurven zu deren Aussenseite ansteigt, das heisst gegenueber der Horizontalebene Y geneigt angeordnet ist. Die Transportbahn 2 weist eine Vielzahl elastischer Endlosriemen 3 auf, die aus Gummi oder aehnlichem Material bestehen, in vorteilhafter Weise mit kreisrundem Querschnitt. Die Riemen sind parallel zueinander angeordnet und werden um zwei Umlenkpunkte, bestehend aus konischen Umlenkwalzen 4, umgelenkt. Diese Umlenkwalzen weisen Umfangsnuten 5 auf. Mit den Bezugszeichen 7 und 8 sind Verbindungszylinder dargestellt, die Bestandteil der kurvenfoermig verlaufenden Transportbahn oder der geradlinig verlaufenden Einlauf- oder Auslaufstrecke sind.
Die Umlenkrollen 4 sowie die Verbindungszylinder 7 und 8 sind drehbar gelagert und in nicht dargestellter Weise durch einen Motor angetrieben und werden von einem gebogenen inneren Profil 9 und einem aeusseren Profil 10 gelagert. An den gebogenen Profilen 9 und 10 ist ein Aufnahmesektor 11 aus Blech befestigt, dieser Blechsektor weist steigenden Verlauf zur Aussenseite entsprechend der Transportbahn 2 und der oberen Erzeugenden der konischen Umlenkwalzen 4 auf. Die Profile 9 und 10 und der Sektor 11 bilden das Gestell der Transportvorrichtung 1. Der kurvenfoermige Verlauf der einzelnen Riemen 3 erstreckt sich entlang polygonalartigen Linien, die zueinander konzentrisch angeordnet sind und von Fuehrungsscheiben 12, die entlang der strahlenartigen Linien R angeordnet sind, bestimmt werden. Die Strahlenlinien R laufen vom Mittelpunkt X der Kurve strahlenfoermig nach aussen. Die Scheiben 12 sind auf laschenartigen Blechstreifen 13 gelagert, die aus dem Blechsektor 11 herausgestanzt und nach unten abgebogen sind, wie dies in Fig. 3 dargestellt ist. Mit dieser Ausfuehrungsform bilden die Riemen 3 eine Foerderbahn 2 fuer die Bogenstapel. Die Foerderbahn 2 ist von innen nach aussen steigend nach Art einer ueberhoehten Kurve ausgebildet.
Bei dem dargestellten Beispiel sind die Riemenscheiben 12 hohl ausgebildet und frei drehbar auf einem Drehbolzen 14 mittels eines Kugellagers 15 (Fig. 6) gelagert. Der Bolzen 14 ist mit einer ausgestanzten Blechlasche 13 ueber eine Schraube 16 und einer Spannmutter 17 verbunden. Mit dem Bezugszeichen 18 ist ein Gewindestift gekennzeichnet, der in die ausgestanzte Blechlasche 13 und in den Bolzen 14 eingeschraubt ist, um ein ungewolltes Verdrehen dieses Bolzens zu vermeiden. Wie den Zeichnungen deutlich zu entnehmen ist, weist der obere Rand der Riemenscheiben 12 eine Anfasung 19 auf, die parallel zur Transportbahn 2 ausgerichtet ist. Auf diese Weise koennen die Bogensignaturen, die schematisch mit 20 in Fig. 4 und 5 gekennzeichnet sind, auf den Riemen 3 ueber den Riemenscheiben 12 mit geradlinigem Verlauf und ohne Stoerungen gefoerdert werden. Bei der dargestellten Konstruktion weist der Winkel alpha gemaess Fig. 6 zwischen der Achse 21 der Riemenscheiben 12 und der Transportebene 2 einen Wert von weniger als 90° auf, z. B. einen Winkel von 70°.
Fuer den Ruecklauf der Riemen 3 unterhalb des bogenfoermigen Blechsektors 11, sind zwei radial angeordnete Streben 23 vorgesehen, die mit dem inneren gebogenen Profil 9 sowie dem aeusseren gebogenen Profil 10 verbunden sind. Jede Strebe 23 nimmt fuer jeden Riemen 3 eine Fuehrungsscheibe 12 auf.
In der Ausfuehrungsform nach Fig. 4 und 5 ist der bogenfoermig ausgebildete Blechsektor 11 von einzelnen radialen Sektoren 24 gebildet, die auch in Fig. 1 dargestellt sind und fest mit dem inneren gekruemmten Profil 9 verbunden sind. Das aeussere Ende 25 der radialen Sektoren 24 ist ueber eine Schraube 26 mit einem elastischen laschenfoermigen Blechteil 27 verbunden. Das Blechteil weist eine vertikal angeordnete fensterartige Oeffnung 28 auf. Die fensterartige Oeffnung 28 wird von einer Schraube 29 durchdrungen, die in eine Gewindebohrung 30 des aeusseren kurvenfoermigen Profils 10 einschraubbar ist. Durch Anheben oder Absenken des aeusseren Endes 25 ist es moeglich, die Neigung der radialen Blechsektoren 24 und somit der Transportbahn 2 in Abhaengigkeit von der Geschwindigkeit des Signaturenstromes, bestehend aus schuppenfoermigen Bogensignaturen, sowie der technischen Beschaffenheit dieser Bogensignaturen, zu aendern.
Die Transportvorrichtung 1 kann mit nicht dargestellten Stuetzen ausgeruestet sein oder an den einlaufenden bzw. auslaufenden Transporteinrichtungen befestigt sein.
Die erfindungsgemaesse kurvenfoermige Transportstrecke hat folgende Arbeitsweise:
Der Strom der Bogensignaturen bewegt sich laengs der Transportvorrichtung 1 entlang der Transportbahn 2, die von Transportriemen 3 gebildet ist. Die Transportriemen 3 nehmen die Signaturen waehrend der gesamten Foerderbewegung zwischen den Umlenkrollen 4 auf. An den Riemenscheiben 12 treten die Bogensignaturen mit den angefasten Raendern 19 der Riemenscheiben 12 in Verbindung, die Drehbewegung der Riemenscheiben traegt zur Vorschubbewegung der Bogensignaturen bei, ohne dass dabei die faecherartige Oeffnungs- und Schliessbewegung der Signaturen beeintraechtigt wird. Aufgrund des hohen Reibungswertes des elastischen Riemenmaterials und der nach aussen hin ansteigenden Neigung der Transportbahn 2 wird jegliches Gleiten zwischen den Bogensignaturen verhindert.
Es wurden sehr gute Ergebnisse mit einem Kurvenverlauf von 90° erzielt. Diese Kurve weist konische Umlenkrollen mit einem Konuswinkel von circa 5° auf und eine symmetrische Anordnung der Foerderriemen, wobei ein zentral angeordneter Riemen und zwei seitlich angeordnete Gruppen, bestehend aus je drei Foerderriemen, vorgesehen sind. Es ist ein zunehmender Abstand zwischen dem zentral angeordneten Riemen in Richtung der Enden der Umlenkrollen 4 vorgesehen.
Bei sehr leichten Bogensignaturen bestehend aus Glanzpapier, das heisst Papier mit sehr geringem Reibwert, wurde ein einwandfreier Transport der Bogensignaturen auch mit Foerdergeschwindigkeiten bis zu 60 m/min erzielt, dabei wurde der Neigungswinkel der Transportstrecke 2 vergroessert.
Eine solche Aenderung der Neigung der Transportbahn 2 ist aufgrund der Unterteilung des Blechsektors 11 in einzelne Radialsektoren 24 sowie durch Ausnuetzen der Elastizitaet der Riemen moeglich. Im dargestellten Beispiel erfolgt die Aenderung der Neigung der Transportstrecke 2 gegenueber der Horizontalebene Y durch Loesen der Schrauben 29 und Anheben der radial angeordneten Bauteile 24, die nacheinander auf die gewuenschte Hoehe (Neigung) einjustiert werden. Im Anschluss erfolgt erneut ein Spannen der Schraube 29.
In der Praxis hat sich gezeigt, dass ein Anheben um 10 bis 15 mm ausreichend ist, um einen einwandfreien Transport mit Geschwindigkeiten bis circa 60 m/min fuer Bogensignaturen, bestehend aus unterschiedlichen Materialien, zu gewaehrleisten.
In der Praxis kann die Anzahl der Riemen sowie die Anzahl der radial angeordneten Riemenscheiben entsprechend dem Radius der Kurve oder der zu foerdernden Bogensignaturen geaendert werden.
In the example shown, the conveyor device according to the invention, which has a curved course, has a curve of 90 ° with its center at point X. The curved track is provided for the transport of a stream of signatures from sheet signatures one above the other. The signature stream is in a manner not shown, for. B. formed after a rotary printing press and promoted in the direction of arrow F. The transport device 1 consists of a transport path which rises from the inside of the curves to the outside thereof, that is to say is inclined with respect to the horizontal plane Y. The transport track 2 has a plurality of elastic endless belts 3, which are made of rubber or similar material, advantageously with a circular cross section. The belts are arranged parallel to one another and are deflected around two deflection points consisting of conical deflection rollers 4. These deflecting rollers have circumferential grooves 5. With the reference numerals 7 and 8 connecting cylinders are shown, which are part of the curvilinear transport path or the rectilinear inlet or outlet section.
The deflection rollers 4 and the connecting cylinders 7 and 8 are rotatably mounted and driven in a manner not shown by a motor and are supported by a curved inner profile 9 and an outer profile 10. A sheet metal receiving sector 11 is fastened to the curved profiles 9 and 10, this sheet metal sector has an increasing profile to the outside corresponding to the transport path 2 and the upper generatrix of the conical deflecting rollers 4. The profiles 9 and 10 and the sector 11 form the frame of the transport device 1. The curvilinear course of the individual belts 3 extends along polygonal lines which are arranged concentrically to one another and are determined by guide disks 12 which are arranged along the beam-like lines R. . The ray lines R radiate outward from the center X of the curve. The disks 12 are mounted on tab-like sheet metal strips 13, which are punched out of the sheet metal sector 11 and bent downward, as shown in FIG. 3. With this embodiment, the belts 3 form a conveyor track 2 for the sheet stack. The conveyor track 2 is designed to rise from the inside to the outside in the manner of an exaggerated curve.
In the example shown, the pulleys 12 are hollow and are freely rotatable on a pivot pin 14 by means of a ball bearing 15 (FIG. 6). The bolt 14 is connected to a punched-out sheet metal bracket 13 via a screw 16 and a clamping nut 17. The reference numeral 18 denotes a threaded pin which is screwed into the punched-out sheet metal tab 13 and into the bolt 14 in order to prevent this bolt from being rotated unintentionally. As can be clearly seen in the drawings, the upper edge of the pulleys 12 has a chamfer 19 which is aligned parallel to the transport path 2. In this way, the sheet signatures, which are schematically identified by 20 in FIGS. 4 and 5, can be conveyed on the belt 3 over the belt pulleys 12 in a straight line and without interference. In the construction shown, the angle alpha according to FIG. 6 between the axis 21 of the pulleys 12 and the transport plane 2 has a value of less than 90 °, e.g. B. an angle of 70 °.
For the return of the belts 3 below the arcuate sheet metal sector 11, two radially arranged struts 23 are provided, which are connected to the inner curved profile 9 and the outer curved profile 10. Each strut 23 receives a guide pulley 12 for each belt 3.
In the embodiment according to FIGS. 4 and 5, the sheet-metal sector 11 in the form of an arc is formed by individual radial sectors 24, which are also shown in FIG. 1 and are firmly connected to the inner curved profile 9. The outer end 25 of the radial sectors 24 is connected via a screw 26 to an elastic tab-shaped sheet metal part 27. The sheet metal part has a vertically arranged window-like opening 28. The window-like opening 28 is penetrated by a screw 29 which can be screwed into a threaded bore 30 of the outer curvilinear profile 10. By raising or lowering the outer end 25, it is possible to change the inclination of the radial sheet metal sectors 24 and thus the transport path 2 as a function of the speed of the signature stream, consisting of scale-like signature, and the technical nature of these signature.
The transport device 1 can be equipped with supports (not shown) or can be attached to the incoming or outgoing transport devices.
The curved transport route according to the invention has the following mode of operation:
The stream of sheet signatures moves along the transport device 1 along the transport path 2, which is formed by transport belts 3. The transport belts 3 take up the signatures during the entire conveying movement between the deflection rollers 4. The arch signatures with the chamfered edges 19 appear on the pulleys 12 the pulleys 12 in connection, the rotary movement of the pulleys contributes to the advancing movement of the sheet signatures, without thereby affecting the fan-like opening and closing movement of the signatures. Due to the high coefficient of friction of the elastic belt material and the outward inclination of the transport path 2, any sliding between the sheet signatures is prevented.
Very good results were obtained with a curve of 90 °. This curve has conical deflection rollers with a cone angle of approximately 5 ° and a symmetrical arrangement of the conveyor belts, a centrally arranged belt and two laterally arranged groups, each consisting of three conveyor belts, being provided. There is an increasing distance between the centrally arranged belt in the direction of the ends of the deflection rollers 4.
In the case of very light sheet signatures consisting of glossy paper, i.e. paper with a very low coefficient of friction, the sheet signatures were transported perfectly even at conveyor speeds of up to 60 m / min. The inclination angle of the transport path 2 was increased.
Such a change in the inclination of the transport path 2 is due to the division of the sheet metal sector 11 into individual ones Radial sectors 24 and possible by utilizing the elasticity of the belts. In the example shown, the inclination of the transport path 2 with respect to the horizontal plane Y is changed by loosening the screws 29 and lifting the radially arranged components 24, which are successively adjusted to the desired height (inclination). The screw 29 is then tightened again.
In practice it has been shown that lifting by 10 to 15 mm is sufficient to ensure perfect transport at speeds of up to around 60 m / min for sheet signatures consisting of different materials.
In practice, the number of belts and the number of radially arranged pulleys can be changed according to the radius of the curve or the sheet signatures to be conveyed.

Claims (9)

  1. Apparatus for the transport of signature titles on an arcuate track run between a feed track and a discharge track which are arranged at an angle to one another, characterized in that the conveying track (2) is formed by a plurality of elastic endless belts (3) which are arranged parallel to one another, in that the curved conveying track (2) ascends from the inside of the curve to the outside of the curve, in that the belts (3) are set in motion by driven deflecting rollers, the diameter of which increases from the inside of the curve to the outside of the curve, and in that the deflecting rollers have grooves (5) for receiving the belts (3) and the belts are guided by pulleys (12) which are arranged combined in groups on lines (R) extending in a radiating manner from the centre point (X) of the curve to the outside of the latter.
  2. Transport apparatus according to Patent Claim 1, characterized in that the belt pulleys (12) for guiding the belts (3) and for forming the conveying track (2) are arranged on an annular sheet-metal sector (11), and this sheet-metal sector is arranged ascending from the inside of the curve to the outside of the curve and has receiving brackets which are made by stamping the sheet-metal sector and which are bent downwards, in that the belt pulleys (12) are received freely rotatably by an axis (21) which forms an angle of less than 90° with the transport track (2), and in that the upper edge (19) of the pulleys (12) has a chamfer oriented parallel to the conveying plane.
  3. Transport apparatus according to Patent Claims 1 and 2, characterized in that the pulleys (12) for guiding the belts are made hollow and are received, by means of a ball bearing (15), by a bolt (14) which is connected via a screw (16) to a bracket (13) of the sheet-metal sector (11).
  4. Transport apparatus according to Patent Claims 1 and 3, characterized in that the sheet-metal sector (11) is subdivided into radial segments (24), each segment of which receives the guide pulleys (12) of one radiating line (R), and in that the radially extending segments (24) are arranged fixedly at the inner end and are arranged so as to be of adjustable height at the outer end (25).
  5. Transport apparatus according to Patent Claim 4, characterized in that the outer end (25) of the radial segments (24) has a holding bracket (27) possessing a vertically arranged window-like orifice (28), through which passes a clamping screw (29) which can be screwed into a fixed part (10) of the transport apparatus (1).
  6. Transport apparatus according to Patent Claims 1 and 4, characterized in that there are arranged underneath the pulleys (12) of the transport track (2), between the deflecting rollers (4), two transverse struts (23) which extend in a radiating manner and which receive guide pulleys (12) arranged in a row for the return of the belts (3).
  7. Transport apparatus according to Patent Claim 1, characterized in that the same number of conveyor belts (3) is provided on the two sides of a central conveyor belt (3) or of the mid-plane of the conveying track (2).
  8. Transport apparatus according to Patent Claims 1 and 7, characterized in that, on both sides of the centrally arranged conveyor belt (3) or of the mid-plane of the conveying track (2), the conveyor belts provided are at a mutual spacing which increases towards the ends of the deflecting rollers (4) in relation to the centrally arranged belt (3) or to the mid-plane.
  9. Transport apparatus according to Patent Claim 1, characterized in that driven connecting rollers (7, 8) are provided in the vicinity of the deflecting rollers (4).
EP91112861A 1990-08-03 1991-07-31 Transport apparatus for particulate material with a curved section Expired - Lifetime EP0469570B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT02122090A IT1246426B (en) 1990-08-03 1990-08-03 CURVED TRANSPORT DEVICE FOR MARKINGS ARRANGED IN FLAKES
IT2122090 1990-08-03

Publications (2)

Publication Number Publication Date
EP0469570A1 EP0469570A1 (en) 1992-02-05
EP0469570B1 true EP0469570B1 (en) 1994-06-01

Family

ID=11178583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91112861A Expired - Lifetime EP0469570B1 (en) 1990-08-03 1991-07-31 Transport apparatus for particulate material with a curved section

Country Status (5)

Country Link
EP (1) EP0469570B1 (en)
CA (1) CA2048289C (en)
DE (1) DE59101777D1 (en)
IT (1) IT1246426B (en)
NO (1) NO913011L (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4242542A1 (en) * 1992-12-16 1994-06-23 Heidelberger Druckmasch Ag Product delivery system for folders on rotary printing presses
US5673784A (en) * 1995-08-17 1997-10-07 Food Process Systems, Inc. Plural preformed belt conveyor corner turn
US5924550A (en) * 1995-08-17 1999-07-20 Karpinsky; James L. Elastic web conveyor corner turn
AU711561B2 (en) * 1996-02-27 1999-10-14 Siemens Ltd. Hybrid closed loop conveyor
AUPN833396A0 (en) * 1996-02-27 1996-03-21 Colby Engineering Pty. Limited Hybrid closed loop conveyor
US7210572B2 (en) * 2005-02-03 2007-05-01 Advanced Manufacturing Technology Adjustable guide for a bottle handling system
US8347920B2 (en) 2010-01-29 2013-01-08 Flexibility Engineering, Llc Pressurized fluid positioner control system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1254941A (en) * 1915-03-30 1918-01-29 Lamson Co Corner for conveyers for newspapers and the like.
US2729324A (en) * 1952-10-30 1956-01-03 Cutler Hammer Inc Horizontal turns for conveyers
GB2063201B (en) * 1979-11-06 1984-02-01 Fenner & Co Conveyor apparatus
GB2220903B (en) * 1988-05-20 1992-02-12 Conveyor Systems Conveyor with curved conveyor unit

Also Published As

Publication number Publication date
DE59101777D1 (en) 1994-07-07
CA2048289C (en) 1995-11-28
IT9021220A0 (en) 1990-08-03
IT9021220A1 (en) 1992-02-03
IT1246426B (en) 1994-11-18
NO913011D0 (en) 1991-08-02
CA2048289A1 (en) 1992-02-04
EP0469570A1 (en) 1992-02-05
NO913011L (en) 1992-02-04

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