EP0767120B1 - Sheet guiding device for sheet feeder - Google Patents

Sheet guiding device for sheet feeder Download PDF

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Publication number
EP0767120B1
EP0767120B1 EP96114923A EP96114923A EP0767120B1 EP 0767120 B1 EP0767120 B1 EP 0767120B1 EP 96114923 A EP96114923 A EP 96114923A EP 96114923 A EP96114923 A EP 96114923A EP 0767120 B1 EP0767120 B1 EP 0767120B1
Authority
EP
European Patent Office
Prior art keywords
sheet
guide elements
band
transport direction
guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96114923A
Other languages
German (de)
French (fr)
Other versions
EP0767120A2 (en
EP0767120A3 (en
Inventor
Achim Jost
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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Filing date
Publication date
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Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0767120A2 publication Critical patent/EP0767120A2/en
Publication of EP0767120A3 publication Critical patent/EP0767120A3/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00Separating articles from piles
    • B65H3/66Article guides or smoothers, e.g. movable in operation
    • B65H3/68Article guides or smoothers, e.g. movable in operation immovable in operation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00Separating articles from piles
    • B65H3/08Separating articles from piles using pneumatic force
    • B65H3/0808Suction grippers
    • B65H3/0816Suction grippers separating from the top of pile
    • B65H3/0825Suction grippers separating from the top of pile and acting on the rear part of the articles relatively to the final separating direction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00Feeding articles separated from piles; Feeding articles to machines
    • B65H5/36Article guides or smoothers, e.g. movable in operation
    • B65H5/38Article guides or smoothers, e.g. movable in operation immovable in operation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00Parts for transporting or guiding the handled material
    • B65H2404/60Other elements in face contact with handled material
    • B65H2404/69Other means designated for special purpose
    • B65H2404/691Guiding means extensible in material transport direction
    • B65H2404/6911Guiding means extensible in material transport direction by unwinding from storage section
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10Size; Dimensions
    • B65H2511/12Width
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20Location in space
    • B65H2511/22Distance

Definitions

  • the invention relates to a sheet guiding device for a Feeding area of a sheet processing machine, especially a printing press that follows the sheet Separation from a stack of feeders leads.
  • Suction conveyor When feeding sheets from a stack of sheets sheet processing machines it is common one Suction conveyor to use the lifting and Drag vacuum includes.
  • the separation of the top sheet from a stack is done by lifting the arc in suck in a lower position and then the suction cups be raised. While the bow is raised Position is used by cutters from the Blown air led under the sheet to the Separate the sheet from the stack and raise the sheet assist while maintaining lateral air pressure Loosening blowers continuously air against the Stack side edges in the leading section of the sheet blow.
  • the suction cups reach their highest position have horizontally reciprocating conveyors (Drag vacuum) remove the bow from the lifting vacuums Aspirate the sheet and switch off the suction air on the suction cups becomes.
  • the suction cups then transport the Arch through a horizontal movement in the direction of the sheet processing machine, so that the leading Section of the sheet at a transfer point Sheet transport devices of the subordinate sheet processing machine, for example via a Conveyor belts guided by the arrival table arrives.
  • the Takeover by the sheet transport facility of the sheet processing machine is done by clocked Lowering of clock rolls, which causes the bow to the circulating conveyor belts is pressed.
  • the clock rollers will supply the suction air to the Feeder interrupted and the feeder in their Sheet conveying direction brought back position.
  • Sheet guiding devices above the sheet conveying path used.
  • Such a sheet guide device is from the DE 17 86 232 A1 known.
  • one Sheet feeder is the sheet on the sheet conveying path above the stack of sheets of several horizontally arranged telescopically extendable bow guide rods on his Led top.
  • the telescopic rods run from one in Sheet transport direction behind the suction head across Sheet transport direction arranged with the suction head connected traverse above the sheet stack up to Transfer point to a feed table of a printing press horizontally in one plane.
  • the above Bow guide rods pushed together.
  • the guide elements are essentially dimensionally stable.
  • a major disadvantage is that the Arch guides need to be serviced to their To maintain functional reliability because of the telescopic rods Contamination and abrasion exposed to increasing wear are.
  • DE-A-3 817 287 shows a sheet guiding device for the feed area of a sheet processing machine with a band-shaped sheet guiding element which can be rolled up onto a winding roll, according to the preamble of claim 1 or 2.
  • the invention has for its object a Sheet guiding device to create the sheet in the feed area of sheet-processing machines, in particular Printing machines, safe and damage-free leads and both adjustable to longitudinal sheet format as well as horizontal sheet format is.
  • An advantage of the invention is that the Sheet guiding elements not only in the longitudinal direction of the sheet, but also can also be adjusted to the format in the transverse direction of the sheet, so that the lateral format adjustment of facilities, e.g. side stack stops or side Loosening blowers, not through the sheet guide is hindered and nevertheless an arch guidance over the entire Sheet width is done.
  • Another advantage of the invention is that stepless guidance devices with less Friction can be created. By placing the guiding elements under Tension, they practice on the transported sheet a dampening downward force. This will Damage to the top of the sheet, especially at Reinstalling already printed sheets, avoided.
  • the sheet guiding elements according to the invention offer the advantage that they are extremely low maintenance.
  • An advantage of continuing education at Invention is a fastening of the sheet guide elements or Winding rolls on the brackets on which the side Stacking stops and / or side loosening blowers are attached.
  • the Sheet guiding devices without any format adjustment adjusted so that both the side stack stops as also the sheet guiding device in a common Operation is carried out. This is particularly the case with fully automatic adjustment of the side stacking stops and loosening blowers etc. on the sheet format is advantageous because a separate adjustment device for the Sheet guiding device (sheet guiding elements) unnecessary.
  • FIG. 1 shows the invention in side view
  • FIG. 2 is a schematic illustration of the invention in plan view.
  • a sheet is made in a known manner from a sheet stack 10,10 'separated and towards a sheet processing Machine transported by means of a suction conveyor 4. During transport, the sheet is in at the top an area between a transfer point and teats 4b guided by means of a sheet guide device 1. With The transfer point is the point at which through Place the clock rollers 5 on the bow in the area of leading edge of the sheet in contact with Sheet conveyor belts 9 is brought and so the handover the sheet processing machine takes place.
  • the Sheet guiding device 1 has several, for example four, adjacent sheet guiding elements 2, it can however, fewer or more sheet guiding elements as required be used.
  • the sheet guide elements 2 are each made a combination of a band-shaped body 2a and a winding roll 2b, on which one end of the band-shaped body 2a is attached.
  • the band-shaped body 2a is a band, a rope or a cord consisting of Steel, plastic, natural fibers or a similar material.
  • the winding roll 2b is self-winding by them in a known manner in a direction of rotation by a Restoring force, e.g. by means of a spiral spring is. The winding direction results from the direction in which the restoring force acts on the winding roll.
  • the Sheet guiding elements 2 are at the free end of the band-shaped Body 2a on the, viewed in the sheet transport direction T, attached front lower edge of the suction conveyor 4 and at its other end, the winding rolls 2b are on brackets 3 brought on, which on the to the sheet processing Machine-facing side of the device are attached.
  • the Winding rolls 2b are immediately above the Sheet transport path attached to the brackets 3.
  • the band-shaped bodies 2a between the winding roll 2b and the attachment to the free End on the side of the suction conveyor 4 via additional, fixed to the brackets 3 deflection elements 3a deflected up to immediately via the sheet transport path.
  • An adjustment to sheet landscape format is made to the Brackets 3 arranged in the format adjustment areas are.
  • "Format adjustment range” denotes the sections AC and BD between points A and B, respectively, which are near the lateral sheet edges are at maximum sheet landscape format, and points C and D, which are close to the lateral
  • the edges of the sheets lie in a minimal sheet format, and in that the lateral sheet stops 11 by transverse to the process Sheet transport direction T made to the feeder stack 10 become.
  • the brackets 3 in the format adjustment range (AC, BD) are arranged across the Sheet transport direction set so far to the machine center M, that they over the area of the corners of the leading edge of the sheet to be fed if this is at the transfer point located.
  • This measure becomes a guide over the entire sheet width, especially in the area of leading sheet edge immediately before delivery to the sheet processing machine, for the reliable Feeding the sheet to the sheet processing machine is particularly critical. You can also do this the side stacking stops 11 in contact with the sides of the Sheet stack 10 are brought without using the concerned Brackets 3 or the associated guide elements 2 collide.
  • Brackets 3 which are in the format adjustment ranges AC, BD are arranged, are transverse to the cross member 12 Sheet transport direction T between point A and C or B and D slidably attached according to the transverse sheet format.
  • the brackets 3, which are in the middle between the Format adjustment areas AC, BD are not arranged adjusted.
  • the sheet guide 2 always under Prestress is the length of the band-shaped body 2a chosen so that when setting the Suction conveyor 4 and in the Format adjustment ranges AC, BD arranged brackets 3 the minimum sheet format so far from the winding roll 2b are processed that the restoring force of the winding rollers 2b acts on the band-shaped body 2a.
  • the band-shaped bodies 2a are each different Length, the band-shaped body 2a of the Sheet guiding elements 2, which with a maximum sheet format on farthest from the machine center M, longer than that located closer to the center of the machine Sheet guide elements 2.
  • the band-shaped Body 2a with a coating or casing, for example made of silicone or plastics, the a slight friction against the surface of the has transporting sheet and / or is color-repellent.
  • This also ensures that the Adjustment range in which the carrier 6 with clock rollers 5 transversely can be moved to the sheet transport direction T, not is limited by the brackets 3.
  • the adjustment can manually or automatically by your own Drive device for between the Format adjustment ranges AC, BD arranged brackets be carried out.
  • BD attached brackets 3 and to be able to do without the lateral bow stops 11 and collisions between brackets 3 and lateral bow stops 11 can be excluded in a further development of the invention as Mounts 3 the side stacking stops 11 or Means used on which the side stacking stops 11 are attached and with which the side Stacking stops 11, 11 'transverse to the sheet transport direction in the Format adjustment range AC, BD can be adjusted. In this way the guide elements 2 follow the lateral ones in one operation Stack stops 11 and always cover the entire sheet width from.
  • Extensions 8 steer perpendicular to the Front edge of the suction conveyor 4 attached Extensions 8 the sheet guide elements to a certain Distance from the level of the top of the stack. These are preferably designed to be adjustable in the vertical direction, around the inclination of the sheet guiding elements from the holder 3 the suction conveyor 4 depending on the behavior of the to be able to vary sheets to be fed. To reduce the Friction between these extensions 8 and Bogenleitieri 2 carry the extensions 8 on their lower end rollers 8a.
  • brackets 3 and / or Suction conveyor 4 deflection elements in the form from above open hooks or closed eyes provided, through which a band-shaped body 2a from the winding roll over the Suction conveyor 4 to another bracket 3 on the to the side facing the sheet processing machine is returned, for example from point E to point G on the front edge of the suction conveyor 4 at point A and from point F via point H to point B.
  • a sheet guiding element 2 several times between the Suction conveyor 4 and the brackets 3 alternately zigzag back and forth.
  • the Sheet guiding elements on one or both ends on the Suction conveyor or the brackets 3 can be attached, by hook elements on the brackets and on the Bow guide elements loops or hooks or knots are trained.
  • the sheet guide device 1 is in accordance with the format of the to be fed so adjusted that in the Format adjustment areas arranged sheet guide elements 2 above the area of the corners of the leading sheet edge of the sheet, if it is at the transfer point, run like this that the sheet in the area of the leading sheet edge before Transfer point Ü to the sheet processing machine via the entire width.
  • the in section BD, between the format adjustment areas AC, BD arranged Sheet guide elements 2 are in accordance with the sheet behavior adjusted. If they are on the carriers 6 of the clock rollers 5 attached, follow their adjustment.
  • the ascending or from the rear edge of the Sheet stack fed separation air is fluttering through the sheet guide elements 2 with a damping force held down by the band-shaped body 2a under Stand tension. Due to the inclination of the sheet guide elements 2 will be the distance over which the sheet is connected to the Sheet guiding elements is present, minimized, since the sheet is only in the middle area of the sheet guide elements 2 in contact with the Bogenleitmaschine 2 comes.
  • the one rising or bulging during transportation Bow does not come due to the inclination of the sheet guide elements 2 just behind the suction conveyor 4 but only at a certain distance from the suction conveyor 4 in Contact to the sheet guide elements 2.
  • the sheet in is pushed its rear end portion, the slides Sheet top along the sheet guide elements 2 and is due to the inclination of the sheet guiding elements in the immediate vicinity the transfer point Ü to the sheet-processing machine directed.
  • the first arc over its entire length in comes into direct contact with the sheet guiding elements 2 the following sheets as a result of the scaled feed Sheet guiding elements 2 only in the trailing section of the Arch surface.
  • the Stiffness of the arc current so that the arc movement in vertical direction (flutter) is stabilized and by the invention also a guide across the entire sheet width in the trailing section the bow is not required. This will make contact between the bow and the Sheet guiding elements additionally reduced and the risk of Damage to the top of the sheet, especially when the system is in place already printed sheets reduced.
  • the sheet guiding elements 2 designed according to the invention compensate for the adjustment of the suction conveyor 4 (in Sheet transport direction T) and the brackets 3 or at Attachment of the sheet guide elements 2 to be adjusted to the lateral stacking stops 11 (orthogonal to Sheet transport direction T) in the format adjustment areas AC and BD. If the suction conveyor 4 in Sheet transport direction is adjusted to sheet format, shorten the sheet guide elements 2 according to the Adjustment by the winding rollers 2b due to the Restoring force wind the band-shaped body 2a. If the suction conveyor 4 against the Sheet transport direction T to a larger sheet size is adjusted, the sheet guide elements 2 by the ribbon-shaped body 2a from the above. Winding rolls 2b against the restoring force is handled.
  • the sheet guide elements 2 When adjusting to a larger sheet format the sheet guide elements 2 by the reverse movement the suction conveyor 4 and the side Stacking stops 11, 11 'shorten the Sheet guiding elements 2. With adjustment of the clock rollers 5 or the carrier 6 carrying it transversely to the sheet conveying direction T. Traverse 12, for example in pressure-free areas of sheets already printed on the top, follow Sheet guide elements 2 of the adjustment without further notice.
  • the Sheet guiding device 1 can - for example when creating Arch of high rigidity - brought from a working position by the band-shaped body 2 from the described Transfer devices or hook-shaped fastenings on the Mounts 3 and the suction conveyor 4 unhooked become.
  • the inclination of the sheet guide 2 by the Adjustment of the brackets 8 on the side Suction conveyor 4 varies in the vertical direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Description

Die Erfindung betrifft eine Bogenleiteinrichtung für einen Zuführbereich einer bogenverarbeitenden Maschine, insbesondere einer Druckmaschine, die den Bogen nach Vereinzelung von einem Anlegerstapel führt.The invention relates to a sheet guiding device for a Feeding area of a sheet processing machine, especially a printing press that follows the sheet Separation from a stack of feeders leads.

Bei der Zuführung von Bogen eines Bogenstapels an bogenverarbeitende Maschinen ist es üblich eine Saugfördereinrichtung zu verwenden, die Hub- und Schleppsauger umfaßt. Die Trennung des obersten Bogens von einem Stapel erfolgt, indem die Hubsauger den Bogen in einer unteren Stellung ansaugen und dann die Hubsauger angehoben werden. Während der Bogen sich in angehobener Stellung befindet, wird von Trennbläsern von der Stapelhinterkante Blasluft unter den Bogen geführt, um die Trennung des Bogens vom Stapel und das Anheben des Bogens zu unterstützen, während zur Erhaltung des Luftdrucks seitliche Lockerungsbläser kontinuierlich Luft gegen die Stapelseitenkanten im vorlaufenden Abschnitt des Bogens blasen. Wenn die Hubsauger ihre höchste Stellung erreicht haben, übernehmen horizontal hin- und hergehende Fördersauger (Schleppsauger) den Bogen von den Hubsaugern, indem sie den Bogen ansaugen und die Saugluft an den Hubsaugern abgestellt wird. Anschließend transportieren die Fördersauger den Bogen durch eine Horizontalbewegung in Richtung der bogenverarbeitenden Maschine, so daß der vorlaufende Abschnitt des Bogens an einer Übergabestelle an Bogentransporteinrichtungen der nachgeordneten bogenverarbeitenden Maschine, beispielsweise über einen Anlegetisch geführten Transportbändern, ankommt. Die Übernahme durch die Bogentransporteinrichtung der bogenverarbeitenden Maschine erfolgt durch getaktetes Absenken von Taktrollen, wodurch der Bogen auf die umlaufenden Transportbänder gedrückt wird. Gleichzeitig mit Absenken der Taktrollen wird die Saugluftzufuhr an die Fördersauger unterbrochen und die Fördersauger in ihre in Bogenförderrichtung hintere Stellung gebracht. Dadurch, daß sich der Bogen auf dem Transportweg von den hinteren Lockerungsbläsern fortbewegt, gelangt zunehmend Luft auf die Oberseite des Bogens, was in einer Flatterbewegung des Bogens resultiert. Dadurch ist der stabile und zuverlässige Transport des abgehobenen Bogens, insbesondere im Bereich des vorlaufenden Bogenbereichs, auf einem vorgegebenen Transportweg an die bogenverarbeitende Maschine und damit die auf den Maschinentakt der bogenverarbeitenden Maschine abgestimmte Ankunft des Bogens an der Übergabestelle gefährdet. Zur Lösung dieses Problems werden Bogenleiteinrichtungen oberhalb des Bogenförderweges eingesetzt. Eine derartige Bogenleiteinrichtung ist aus der DE 17 86 232 A1 bekannt. In dem Zuführbereich einer Bogenzuführeinrichtung wird der Bogen auf dem Bogenförderweg über dem Bogenstapel von mehreren horizontal angeordneten, teleskopartig längbaren Bogenleitstangen an seiner Oberseite geführt. Die Teleskopstangen verlaufen von einer in Bogentransportrichtung hinter dem Saugkopf quer zur Bogentransportrichtung angeordneten, mit dem Saukopf verbundenen Traverse oberhalb des Bogenstapels bis zur Übergabestelle an einen Anlegetisch einer Druckmaschine horizontal in einer Ebene. Bei einer formatabhängigen Verstellung des Saugkopfes in bzw. gegen Bogentransportrichtung werden die o.g. Bogenleitstangen zusammengeschoben. Durch die röhrenförmigen Abschnitte der Bogenleitstangen bilden sich stufenartig verlaufende Abschnitte. Die Leitelemente sind im wesentlichen formstabil. Ein wesentlicher Nachteil liegt darin, daß die Bogenleitelemente gewartet werden müssen, um ihre Funktionssicherheit zu erhalten, da die Teleskopstangen durch Verschmutzung und Abrieb zunehmendem Verschleiß ausgesetzt sind.When feeding sheets from a stack of sheets sheet processing machines it is common one Suction conveyor to use the lifting and Drag vacuum includes. The separation of the top sheet from a stack is done by lifting the arc in suck in a lower position and then the suction cups be raised. While the bow is raised Position is used by cutters from the Blown air led under the sheet to the Separate the sheet from the stack and raise the sheet assist while maintaining lateral air pressure Loosening blowers continuously air against the Stack side edges in the leading section of the sheet blow. When the suction cups reach their highest position have horizontally reciprocating conveyors (Drag vacuum) remove the bow from the lifting vacuums Aspirate the sheet and switch off the suction air on the suction cups becomes. The suction cups then transport the Arch through a horizontal movement in the direction of the sheet processing machine, so that the leading Section of the sheet at a transfer point Sheet transport devices of the subordinate sheet processing machine, for example via a Conveyor belts guided by the arrival table arrives. The Takeover by the sheet transport facility of the sheet processing machine is done by clocked Lowering of clock rolls, which causes the bow to the circulating conveyor belts is pressed. At the same time with Lowering the clock rollers will supply the suction air to the Feeder interrupted and the feeder in their Sheet conveying direction brought back position. As a result of that the arch on the transport route from the rear Loosening blowers moving, air gets increasingly on the Top of the bow, resulting in a fluttering motion of the bow results. This makes the stable and reliable Transport of the drawn sheet, especially in the area of the leading arc area, on a given Transport route to the sheet processing machine and thus the on the machine cycle of the sheet-processing machine coordinated arrival of the sheet at the transfer point at risk. To solve this problem Sheet guiding devices above the sheet conveying path used. Such a sheet guide device is from the DE 17 86 232 A1 known. In the feed area one Sheet feeder is the sheet on the sheet conveying path above the stack of sheets of several horizontally arranged telescopically extendable bow guide rods on his Led top. The telescopic rods run from one in Sheet transport direction behind the suction head across Sheet transport direction arranged with the suction head connected traverse above the sheet stack up to Transfer point to a feed table of a printing press horizontally in one plane. At a format-dependent adjustment of the suction head in or against Sheet transport direction are the above Bow guide rods pushed together. Through the tubular sections of the Sheet guiding rods form stepped ones Sections. The guide elements are essentially dimensionally stable. A major disadvantage is that the Arch guides need to be serviced to their To maintain functional reliability because of the telescopic rods Contamination and abrasion exposed to increasing wear are.

Die DE-A-3 817 287 zeigt eine Bogenleiteinrichtung für den Zuführbereich einer bogenverarbeitenden Maschine mit einem bandförmigen auf eine Wickelrolle aufrollbarem Bogenleitelement gemäß dem Oberbegriff von Anspruch 1 oder 2. DE-A-3 817 287 shows a sheet guiding device for the feed area of a sheet processing machine with a band-shaped sheet guiding element which can be rolled up onto a winding roll, according to the preamble of claim 1 or 2.

Der Erfindung liegt die Aufgabe zugrunde, eine Bogenleiteinrichtung zu schaffen, die Bogen im Zuführbereich von bogenverarbeitenden Maschinen, insbesondere Druckmaschinen, sicher und beschädigungsfrei führt und sowohl auf Bogenlängsformat als auch Bogenquerformat verstellbar ist.The invention has for its object a Sheet guiding device to create the sheet in the feed area of sheet-processing machines, in particular Printing machines, safe and damage-free leads and both adjustable to longitudinal sheet format as well as horizontal sheet format is.

Die Lösung dieser Aufgabe wird durch die in Anspruch 1 angegebenen Merkmale erreicht.The solution to this problem is achieved by the in claim 1 specified characteristics achieved.

Ein Vorteil der Erfindung besteht darin, daß die Bogenleitelemente nicht nur in Bogenlängsrichtung, sondern auch in Bogenquerrichtung auf Format verstellt werden können, so daß die seitliche Formatverstellung von Einrichtungen, z.B. seitlichen Stapelanschlägen oder seitlichen Lockerungsbläsern, nicht durch die Bogenleiteinrichtung behindert wird und dennoch eine Bogenführung über die gesamte Bogenbreite erfolgt. Ein weiterer Vorteil der Erfindung besteht darin, daß stufenlose Leiteinrichtungen mit geringer Reibung geschaffen werden. Indem die Leitelemente unter Zugspannung stehen, üben sie auf den transportierten Bogen eine dämpfend niederhaltende Kraft aus. Dadurch werden Beschädigungen der Bogenoberseite, insbesondere bei Wiederanlage bereits bedruckter Bogen, vermieden. Zudem bieten die erfindungsgemäßen Bogenleitelemente den Vorteil, daß sie äußerst wartungsarm sind. Die Ausbildung der Leitelemente aus dehnbarem Material erlaubt, auf Wickelrollen verzichten zu können, so daß eine äußerst einfache und platzsparende Konstruktion bei gleicher Funktionalität gegenüber im wesentlichen nichtelastischen Bändern mit Wickelrolle erreicht wird. Ein Vorteil der Weiterbildung der Erfindung ist eine Befestigung der Bogenleitelemente oder der Wickelrollen an den Halterungen, an denen die seitlichen Stapelanschläge und/oder seitlichen Lockerungsbläser angebracht sind. Durch diese Maßnahme werden die Bogenleiteinrichtungen ohne weiteres jeder Formatverstellung angepaßt, so daß sowohl die seitlichen Stapelanschläge als auch die Bogenleiteinrichtung in einem gemeinsamen Arbeitsgang erfolgt. Dies ist insbesondere bei vollautomatischer Verstellung der seitlichen Stapelanschläge und Lockerungsbläser etc. auf das Bogenformat von Vorteil, da sich eine gesonderte Verstelleinrichtung für die Bogenleiteinrichtung (Bogenleitelemente) erübrigt. Durch Anbringung der zwischen den Formatverstellbereichen angeordneten, innenliegenden Bogenleitelemente an den seitlich verstellbaren Trägern, an denen die Taktrollen zum Niederhalten des Bogens auf die Transporteinrichtung am Übergabepunkt an die bogenverarbeitende Maschine angebracht sind, sind Kollisionen zwischen den Trägern und den Bogenleiteinrichtung ausgeschlossen. Durch ein- oder mehrmalige Hin- und Rückführung der bandförmigen Körper wird eine weitere Verringerung der für die erfindungsgemäße Bogenleiteinrichtung notwendigen Bauteileerreicht. Die Bogenleiteinrichtung ist gegenüber der Stapeloberseite in Bogentransportrichtung geneigt. Dadurch wird erreicht, daß die Bogen genau an die Übergabestelle einer nachfolgend angeordneter Transportrollen geführt werden.An advantage of the invention is that the Sheet guiding elements not only in the longitudinal direction of the sheet, but also can also be adjusted to the format in the transverse direction of the sheet, so that the lateral format adjustment of facilities, e.g. side stack stops or side Loosening blowers, not through the sheet guide is hindered and nevertheless an arch guidance over the entire Sheet width is done. Another advantage of the invention is that stepless guidance devices with less Friction can be created. By placing the guiding elements under Tension, they practice on the transported sheet a dampening downward force. This will Damage to the top of the sheet, especially at Reinstalling already printed sheets, avoided. In addition the sheet guiding elements according to the invention offer the advantage that they are extremely low maintenance. Training the Guiding elements made of stretchable material allowed on winding rolls to be able to do without, so that an extremely simple and space-saving construction with the same functionality compared to essentially non-elastic tapes Winding roll is reached. An advantage of continuing education at Invention is a fastening of the sheet guide elements or Winding rolls on the brackets on which the side Stacking stops and / or side loosening blowers are attached. Through this measure, the Sheet guiding devices without any format adjustment adjusted so that both the side stack stops as also the sheet guiding device in a common Operation is carried out. This is particularly the case with fully automatic adjustment of the side stacking stops and loosening blowers etc. on the sheet format is advantageous because a separate adjustment device for the Sheet guiding device (sheet guiding elements) unnecessary. By Attachment between the format adjustment areas arranged, internal sheet guide elements on the laterally adjustable supports on which the clock rollers for Hold down the sheet on the transport device on Transfer point attached to the sheet processing machine are collisions between the carriers and the Sheet guiding device excluded. By one or repeated return of the band-shaped body is a further reduction in that for the invention Sheet guide device necessary components reached. The Sheet guiding device is in opposite to the top of the stack Sheet transport direction inclined. This ensures that the sheets exactly to the transfer point one following arranged transport rollers are performed.

Eine Ausführungsform der Erfindung ist in den Figuren dargestellt und wird im folgenden beschrieben.An embodiment of the invention is in the figures shown and is described below.

Es zeigen Figur 1 die Erfindung in Seitenansicht und Figur 2 eine schematische Abbildung der Erfindung in Draufsicht.FIG. 1 shows the invention in side view and FIG. 2 is a schematic illustration of the invention in plan view.

Ein Bogen wird in bekannter Weise von einem Bogenstapel 10,10' getrennt und in Richtung einer bogenverarbeitenden Maschine mittels einer Saugfördereinrichung 4 transportiert. Während des Transports wird der Bogen an seiner Oberseite in einem Bereich zwischen einem Übergabepunkt und Schleppsaugern 4b mittels einer Bogenleiteinrichtung 1 geführt. Mit Übergabepunkt ist hier die Stelle bezeichnet, an dem durch Aufsetzen der Taktrollen 5 auf den Bogen im Bereich der vorlaufenden Bogenkante der Bogen in Kontakt zu Bogentransportbändern 9 gebracht wird und so die Übergabe an die bogenverarbeitende Maschine erfolgt. Die Bogenleiteinrichtung 1 besitzt mehrere, beispielsweise vier, nebeneinander angeordnete Bogenleitelemente 2, es können jedoch nach Bedarf auch weniger oder mehr Bogenleitelemente eingesetzt werden. Die Bogenleitelemente 2 werden jeweils aus einer Kombination aus jeweils einem bandförmigen Körper 2a und einer Wickelrolle 2b gebildet, auf der ein Ende des bandförmigen Körpers 2a befestigt ist. Der bandförmige Körper 2a ist ein Band, ein Seil oder eine Schnur, bestehend aus Stahl, Kunststoff, Naturfasern oder einem ähnlichen Material. Die Wickelrolle 2b ist selbstaufwickelnd ausgebildet, indem sie in bekannter Weise in einer Drehrichtung durch eine Rückstellkraft, z.B. mittels einer Spiralfeder, beaufschlagt ist. Die Wickelrichtung ergibt sich aus der Richtung, in der die Rückstellkraft auf die Wickelrolle wirkt. Die Bogenleitelemente 2 sind am freien Ende der bandförmigen Körper 2a an der, in Bogentransportrichtung T betrachtet, vorderen Unterkante der Saugfördereinrichtung 4 befestigt und an ihrem anderen Ende sind die Wickelrollen 2b an Halterungen 3 an gebracht, die sich auf der zu der bogenverarbeitenden Maschine weisenden Seite der Vorrichtung angebracht sind. Die Wickelrollen 2b werden unmittelbar oberhalb des Bogentransportweges an den Halterungen 3 angebracht. Um die Zugänglichkeit zum Bogentransportweg zu erhalten, sind jedoch, wie in Fig.1 gezeigt, die bandförmigen Körper 2a zwischen der Wickelrolle 2b und der Befestigung an dem freien Ende auf Seiten der Saugfördereinrichtung 4 über zusätzliche, an den Halterungen 3 feststehend angebrachte Auslenkelemente 3a bis unmittelbar über den Bogentransportweg ausgelenkt. Eine Verstellung auf Bogenquerformat erfolgt an den Halterungen 3, die in den Formatverstellbereichen angeordnet sind. Dabei bezeichnet "Formatverstellbereich" die Abschnitte AC und BD zwischen Punkten A bzw. B, die in der Nähe der seitlichen Bogenkanten bei maximalem Bogenquerformat liegen, und Punkten C bzw. D, die in der Nähe der seitlichen Bogenkanten bei minimalem Bogenquerformat liegen, und in dem die seitlichen Bogenanschläge 11 durch Verfahren quer zur Bogentransportrichtung T an den Anlegerstapel 10 angestellt werden. Die Halterungen 3, die im Formatverstellbereich (AC,BD) angeordnet sind, werden quer zur Bogentransportrichtung so weit zur Maschinenmitte M gestellt, daß sie über den Bereich der Ecken der vorlaufenden Kante des zuzuführenden Bogens, wenn sich dieser am Übergabepunkt befindet, verlaufen. Durch diese Maßnahme wird eine Führung über die gesamte Bogenbreite gerade im Bereich der vorlaufenden Bogenkante unmittelbar vor Übergabe an die bogenverarbeitende Maschine, der für die zuverlässige Zuführung des Bogens an die bogenverarbeitende Maschine besonders kritisch ist, erreicht. Auch können auf diese Weise die seitlichen Stapelanschläge 11 in Anlage an die Seiten des Bogenstapels 10 gebracht werden, ohne mit den betreffenden Halterungen 3 oder den zugehörigen Leitelementen 2 zu kollidieren.A sheet is made in a known manner from a sheet stack 10,10 'separated and towards a sheet processing Machine transported by means of a suction conveyor 4. During transport, the sheet is in at the top an area between a transfer point and teats 4b guided by means of a sheet guide device 1. With The transfer point is the point at which through Place the clock rollers 5 on the bow in the area of leading edge of the sheet in contact with Sheet conveyor belts 9 is brought and so the handover the sheet processing machine takes place. The Sheet guiding device 1 has several, for example four, adjacent sheet guiding elements 2, it can however, fewer or more sheet guiding elements as required be used. The sheet guide elements 2 are each made a combination of a band-shaped body 2a and a winding roll 2b, on which one end of the band-shaped body 2a is attached. The band-shaped body 2a is a band, a rope or a cord consisting of Steel, plastic, natural fibers or a similar material. The winding roll 2b is self-winding by them in a known manner in a direction of rotation by a Restoring force, e.g. by means of a spiral spring is. The winding direction results from the direction in which the restoring force acts on the winding roll. The Sheet guiding elements 2 are at the free end of the band-shaped Body 2a on the, viewed in the sheet transport direction T, attached front lower edge of the suction conveyor 4 and at its other end, the winding rolls 2b are on brackets 3 brought on, which on the to the sheet processing Machine-facing side of the device are attached. The Winding rolls 2b are immediately above the Sheet transport path attached to the brackets 3. To the To maintain access to the sheet transport path however, as shown in Fig.1, the band-shaped bodies 2a between the winding roll 2b and the attachment to the free End on the side of the suction conveyor 4 via additional, fixed to the brackets 3 deflection elements 3a deflected up to immediately via the sheet transport path. An adjustment to sheet landscape format is made to the Brackets 3 arranged in the format adjustment areas are. "Format adjustment range" denotes the sections AC and BD between points A and B, respectively, which are near the lateral sheet edges are at maximum sheet landscape format, and points C and D, which are close to the lateral The edges of the sheets lie in a minimal sheet format, and in that the lateral sheet stops 11 by transverse to the process Sheet transport direction T made to the feeder stack 10 become. The brackets 3 in the format adjustment range (AC, BD) are arranged across the Sheet transport direction set so far to the machine center M, that they over the area of the corners of the leading edge of the sheet to be fed if this is at the transfer point located. This measure becomes a guide over the entire sheet width, especially in the area of leading sheet edge immediately before delivery to the sheet processing machine, for the reliable Feeding the sheet to the sheet processing machine is particularly critical. You can also do this the side stacking stops 11 in contact with the sides of the Sheet stack 10 are brought without using the concerned Brackets 3 or the associated guide elements 2 collide.

Zur Anbringung der Halterungen 3 ist im rechten Winkel zur Bogentransportrichtung T zwischen den Seitenteilen der Bogenzuführeinrichtung eine Traverse 12 vorgesehen. Die Halterungen 3, die in den Formatverstellbereichen AC, BD angeordnet sind, sind auf der Traverse 12 quer zur Bogentransportrichtung T zwischen Punkt A und C bzw. B und D entsprechend des Bogenquerformats verschiebbar angebracht. Die Halterungen 3, die in der Mitte zwischen den Formatverstellbereichen AC,BD angeordnet sind, werden nicht verstellt. Damit die Bogenleitelemente 2 stets unter Vorspannung stehen, ist die Länge der bandförmigen Körper 2a jeweils so gewählt, daß sie bei Einstellung der Saugfördereinrichtung 4 und der in den Formatverstellbereichen AC,BD angeordneten Halterungen 3 auf das minimale Bogenformat so weit von der Wickelrolle 2b abgewickelt sind, daß die Rückstellkraft der Wickelrollen 2b auf den bandförmigen Körper 2a wirkt. Daraus ergibt sich für die bandförmigen Körper 2a eine jeweils unterschiedliche Länge , wobei die bandförmigen Körper 2a der Bogenleitelemente 2, die bei maximalem Bogenformat am weitesten von der Maschinenmitte M gestellt werden, länger ist, als die der näher zur Maschinenmitte angeordneten Bogenleitelemente 2.To attach the brackets 3 is at a right angle Sheet transport direction T between the side parts of the A sheet crossmember 12 is provided. The Brackets 3, which are in the format adjustment ranges AC, BD are arranged, are transverse to the cross member 12 Sheet transport direction T between point A and C or B and D slidably attached according to the transverse sheet format. The brackets 3, which are in the middle between the Format adjustment areas AC, BD are not arranged adjusted. So that the sheet guide 2 always under Prestress is the length of the band-shaped body 2a chosen so that when setting the Suction conveyor 4 and in the Format adjustment ranges AC, BD arranged brackets 3 the minimum sheet format so far from the winding roll 2b are processed that the restoring force of the winding rollers 2b acts on the band-shaped body 2a. It follows for the band-shaped bodies 2a are each different Length, the band-shaped body 2a of the Sheet guiding elements 2, which with a maximum sheet format on farthest from the machine center M, longer than that located closer to the center of the machine Sheet guide elements 2.

Um eine sichere Führung der Bogen mittels der Bogenleitelemente 2 bis an den Übergabepunkt Ü zu sichern, sind die Bogenleitelemente 2 an den Halterungen 3 hinter dem Bogenübergabepunkt Ü befestigt. Dazu sind die Bogenleitelemente 2 unter der drehbaren Taktrollenwelle 7, auf der die Taktrollen 5 mittels Trägern 6 befestigt sind, über den Übergabepunkt hinweg durchgeführt. Dadurch daß die Entfernung der zu der bogenverarbeitenden Maschinen weisenden vorderen Kante der Saugfördereinrichtung 4, an der die Bogenleitelemente 2 befestigt sind, größer ist als die Entfernung der Taktrollenwelle 7 zu der Oberseite des Bogenstapels 10, ergibt sich eine Neigung der Bogenleitelemente 2 in Bogentransportrichtung T, durch die die Bogenleiteinrichtung 1 und die Oberseite des Bogenstapels 10 in der Seitenansicht trichterförmig zusammenlaufen. Dadurch wird die vorlaufende Kante des transportierten Bogens bzw. der Bogenstrom zuverlässig an die Übergabestelle Ü geleitet.To safely guide the bow by means of the Secure sheet guiding elements 2 up to the transfer point Ü, are the sheet guide elements 2 on the brackets 3 behind the Sheet transfer point Ü attached. For that are the Sheet guide elements 2 under the rotatable clock roller shaft 7, on which the clock rollers 5 are fastened by means of carriers 6, carried out beyond the transfer point. Because the Removal of those pointing to the sheet processing machine front edge of the suction conveyor 4 on which the Sheet guide elements 2 are attached, is larger than that Removal of the clock roller shaft 7 to the top of the Sheet stack 10, there is an inclination of Sheet guiding elements 2 in the sheet transport direction T, through which the sheet guide 1 and the top of the sheet stack 10 converge funnel-shaped in the side view. This will make the leading edge of the sheet being transported or the arc flow reliably to the transfer point Ü headed.

Um Beschädigungen des jeweiligen Bogens durch die Bogenleitelemente 2 zu vermeiden, sind die bandförmigen Körper 2a mit einer Beschichtung oder Ummantelung, beispielsweise aus Silikon oder Kunststoffen versehen, die eine geringe Reibung gegenüber der Oberfläche der zu transportierenden Bogen besitzt und/oder farbabweisend ist.To damage the respective bow by the To avoid sheet guide elements 2 are the band-shaped Body 2a with a coating or casing, for example made of silicone or plastics, the a slight friction against the surface of the has transporting sheet and / or is color-repellent.

In einer Weiterbildung der Erfindung sind die in dem Abschnitt CD zwischen den Formatverstellbereichen AC,BD angeordneten Halterungen 3 wie die übrigen Halterungen 3 quer zur Bogentransportrichtung T verstellbar auf der Traverse 12 angebracht, um die Abstände zwischen den Bogenleitelementen 2 abhängig von der Steifigkeit des zuzuführenden Bogens zu verändern. Dadurch wird darüberhinaus erreicht, daß der Verstellbereich, in dem die Träger 6 mit Taktrollen 5 quer zur Bogentransportrichtung T verschoben werden können, nicht durch die Halterungen 3 beschränkt wird. Die Verstellung kann manuell oder automatisch durch eine eigene Antriebsvorrichtung für die zwischen den Formatverstellbereichen AC,BD angeordneten Halterungen ausgeführt werden.In a development of the invention, the are in the CD section between the format adjustment ranges AC, BD arranged brackets 3 transverse to the other brackets 3 adjustable for the sheet transport direction T on the traverse 12 attached to the distances between the sheet guide elements 2 depending on the stiffness of the sheet to be fed change. This also ensures that the Adjustment range in which the carrier 6 with clock rollers 5 transversely can be moved to the sheet transport direction T, not is limited by the brackets 3. The adjustment can manually or automatically by your own Drive device for between the Format adjustment ranges AC, BD arranged brackets be carried out.

Um auf eine getrennte Verstellung der in den Formatverstellbereichen AC,BD angebrachten Halterungen 3 und der seitlichen Bogenanschläge 11 verzichten zu können und gleichzeitig Kollisionen zwischen Halterungen 3 und seitlichen Bogenanschlägen 11 ausschließen zu können, werden in einer weiteren Weiterbildung der Erfindung als Halterungen 3 die seitlichen Stapelanschläge 11 oder die Mittel verwendet, an denen die seitlichen Stapelanschläge 11 angebracht sind und mit denen die seitlichen Stapelanschläge 11,11' quer zur Bogentransportrichtung im Formatverstellbereich AC,BD verstellt werden. Auf diese Weise folgen die Leitelemente 2 in einem Arbeitsgang den seitlichen Stapelanschlägen 11 und decken stets die gesamte Bogenbreite ab.To switch to a separate adjustment in the Format adjustment ranges AC, BD attached brackets 3 and to be able to do without the lateral bow stops 11 and collisions between brackets 3 and lateral bow stops 11 can be excluded in a further development of the invention as Mounts 3 the side stacking stops 11 or Means used on which the side stacking stops 11 are attached and with which the side Stacking stops 11, 11 'transverse to the sheet transport direction in the Format adjustment range AC, BD can be adjusted. In this way the guide elements 2 follow the lateral ones in one operation Stack stops 11 and always cover the entire sheet width from.

In einer Weiterbildung der Erfindung lenken senkrecht an der Vorderkante der Saugfördereinrichtung 4 angebrachte Verlängerungen 8 die Bogenleitelemente auf einen bestimmten Abstand von dem Niveau der Stapeloberseite aus. Diese sind vorzugsweise in senkrechter Richtung verstellbar ausgeführt, um die Neigung der Bogenleitelemente von der Halterung 3 an die Saugfördereinrichtung 4 abhängig von dem Verhalten der zuzuführenden Bogen variieren zu können. Zur Reduzierung der Reibung zwischen diesen Verlängerungen 8 und den Bogenleitelementen 2 tragen die Verlängerungen 8 an ihrem unteren Ende Rollen 8a. In einer Weiterbildung der Erfindung sind an den Halterungen 3 und/oder der Saugfördereinrichtung 4 Umlenkelemente in Form von oben offenen Haken oder geschlossenen Oesen vorgesehen, durch die ein bandförmiger Körper 2a von der Wickelrolle über die Saugfördereinrichtung 4 zu einer weiteren Halterung 3 auf der zu der bogenverarbeitenden Maschine weisenden Seite zurückgeführt wird, beispielsweise von Punkt E über Punkt G an der Vorderkante der Saugfördereinrichtung 4 an Punkt A und von Punkt F über Punkt H an Punkt B. In gleicher Weise kann ein Bogenleitelement 2 mehrmals zwischen der Saugfördereinrichtung 4 und den Halterungen 3 abwechselnd zick-zack-förmig hin- und hergeführt werden. In einer weiterführenden Ausführung (nicht dargestellt!) sind die Bogenleitelemente an einem oder beiden Enden an der Saugfördereinrichtung bzw. den Halterungen 3 einhängbar, indem an den Halterungen Hakenelemente und an den Bogenleitelementen Schlaufen oder auch Haken bzw. Knoten ausgebildet sind.In a development of the invention, steer perpendicular to the Front edge of the suction conveyor 4 attached Extensions 8 the sheet guide elements to a certain Distance from the level of the top of the stack. These are preferably designed to be adjustable in the vertical direction, around the inclination of the sheet guiding elements from the holder 3 the suction conveyor 4 depending on the behavior of the to be able to vary sheets to be fed. To reduce the Friction between these extensions 8 and Bogenleitelemente 2 carry the extensions 8 on their lower end rollers 8a. In a further development of the invention are on the brackets 3 and / or Suction conveyor 4 deflection elements in the form from above open hooks or closed eyes provided, through which a band-shaped body 2a from the winding roll over the Suction conveyor 4 to another bracket 3 on the to the side facing the sheet processing machine is returned, for example from point E to point G on the front edge of the suction conveyor 4 at point A and from point F via point H to point B. In the same way a sheet guiding element 2 several times between the Suction conveyor 4 and the brackets 3 alternately zigzag back and forth. In a advanced versions (not shown!) are the Sheet guiding elements on one or both ends on the Suction conveyor or the brackets 3 can be attached, by hook elements on the brackets and on the Bow guide elements loops or hooks or knots are trained.

Um den Durchmesser der Wickelrollen 2b und damit den benötigten Bauraum zu reduzieren, bzw. eine längere Aufwickellänge zu erreichen, können auch zwei Wickelrollen (2b) für jeden der bandförmigen Körper 2a vorgesehen sein, auf denen jeweils ein Ende des bandförmigen Körpers 2a befestigt ist. Des weiteren ist es möglich, mehr als einen bandförmigen Körper 2a auf einer gemeinsamen Wickelrolle 2b zu befestigen, sofern sämtliche der betreffenden bandförmigen Körper 2a dieselbe Länge besitzen bzw. so angeordnet sind, daß sie bei einer Formatverstellung im gleichen Verhältnis gelängt bzw. gekürzt werden.To the diameter of the winding rollers 2b and thus the to reduce the space required, or a longer one Reaching the winding length can also be two Winding rolls (2b) for each of the band-shaped bodies 2a be provided, on each of which one end of the band-shaped Body 2a is attached. Furthermore, it is possible to do more as a band-shaped body 2a on a common one To fasten winding roll 2b, provided all of the relevant band-shaped body 2a have the same length or are arranged so that they are in a format adjustment lengthened or shortened in the same ratio.

Eine alternative Lösung besteht darin, die beschriebenen bandförmigen Körper 2a mit Wickelrollen 2b durch hochelastische Bogenleitelemente 2 zu ersetzen. Mit hochelastischen Bogenleitelementen sind hier Bogenleitelemente 2 gemeint, die als Gummibänder, Federn o.ä. ausgeführt sind. Bei dem Einsatz von derartigen hochelastischen Leitelementen erübrigt sich die Verwendung von Wickel rollen 2b. Weitere konstruktive Veränderungen gegenüber dem oben beschriebenen Ausführungsbeispiel sind für die Funktion der Erfindung nicht erforderlich.An alternative solution is the one described band-shaped body 2a with winding rollers 2b through to replace highly elastic sheet guide elements 2. With highly elastic sheet guide elements are here Sheet guiding elements 2 meant, which as rubber bands, springs or the like. are executed. When using such the use of highly elastic guide elements is unnecessary roll of wrap 2b. More constructive changes compared to the embodiment described above are for the function of the invention is not required.

Die Bogenleiteinrichtung 1 wird entsprechend dem Format der zuzuführenden Bogen so verstellt, daß die in den Formatverstellbereichen angeordneten Bogenleitelemente 2 über den Bereich der Ecken des vorlaufenden Bogenkante des Bogens, wenn sie sich an dem Übergabepunkt befindet, verlaufen, so daß die Bogen im Bereich der vorlaufenden Bogenkante vor dem Übergabepunkt Ü an die bogenverabeitende Maschine über die gesamte Breite geführt werden. Die im Abschnitt BD, zwischen den Formatverstellbereichen AC,BD angeordneten Bogenleitelemente 2 werden entsprechend des Bogenverhaltens verstellt. Wenn sie an den Trägern 6 der Taktrollen 5 angebracht sind, folgen sie deren Verstellung. Der auffliegende bzw. durch die von der Hinterkante des Bogenstapels zugeführte Trennluft flatternde Bogen wird durch die Bogenleitelemente 2 mit einer dämpfende Kraft niedergehalten, indem die bandförmigen Körper 2a unter Zugspannung stehen. Durch die Neigung der Bogenleitelemente 2 wird die Strecke, über die der Bogen an den Bogenleitelementen anliegt, minimiert, da der Bogen erst im mittleren Bereich der Bogenleitelemente 2 in Kontakt zu den Bogenleitelementen 2 kommt.The sheet guide device 1 is in accordance with the format of the to be fed so adjusted that in the Format adjustment areas arranged sheet guide elements 2 above the area of the corners of the leading sheet edge of the sheet, if it is at the transfer point, run like this that the sheet in the area of the leading sheet edge before Transfer point Ü to the sheet processing machine via the entire width. The in section BD, between the format adjustment areas AC, BD arranged Sheet guide elements 2 are in accordance with the sheet behavior adjusted. If they are on the carriers 6 of the clock rollers 5 attached, follow their adjustment. The ascending or from the rear edge of the Sheet stack fed separation air is fluttering through the sheet guide elements 2 with a damping force held down by the band-shaped body 2a under Stand tension. Due to the inclination of the sheet guide elements 2 will be the distance over which the sheet is connected to the Sheet guiding elements is present, minimized, since the sheet is only in the middle area of the sheet guide elements 2 in contact with the Bogenleitelemente 2 comes.

Der während des Transports aufsteigende oder sich aufwölbende Bogen kommt durch die Neigung der Bogenleitelemente 2 nicht unmittelbar hinter der Saugfördereinrichtung 4 sondern erst in einem gewissen Abstand von der Saugfördereinrichtung 4 in Kontakt zu den Bogenleitelementen 2. Indem der Bogen in seinem hinteren Endbereich geschoben wird, gleitet die Bogenoberseite an den Bogenleitelementen 2 entlang und wird durch die Neigung der Bogenleitelemente in unmittelbare Nähe des Übergabepunktes Ü an die bogenverarbeitende Maschine gelenkt. Während der erste Bogen über seine gesamte Länge in direkten Kontakt zu den Bogenleitelementen 2 kommt, berühren die folgenden Bogen infolge der geschuppten Zuführung die Bogenleitelemente 2 lediglich im nachlaufenden Abschnitt der Bogenoberfläche . Dadurch, daß durch die geschuppte Lage mehrere Bogen übereinander liegen, erhöht sich die Steifigkeit des Bogenstroms, so daß die Bogenbewegung in vertikaler Richtung (Flattern) stabilisiert wird und durch die Erfindung eine Führung über die gesamte Bogenbreite auch im nachlaufenden Abschnitt der Bogen nicht erforderlich ist. Dadurch wird der Kontakt zwischen den Bogen und den Bogenleitelementen zusätzlich reduziert und die Gefahr von Beschädigungen der Bogenoberseite, insbesondere bei Anlage bereits bedruckter Bogen reduziert.The one rising or bulging during transportation Bow does not come due to the inclination of the sheet guide elements 2 just behind the suction conveyor 4 but only at a certain distance from the suction conveyor 4 in Contact to the sheet guide elements 2. By the sheet in is pushed its rear end portion, the slides Sheet top along the sheet guide elements 2 and is due to the inclination of the sheet guiding elements in the immediate vicinity the transfer point Ü to the sheet-processing machine directed. During the first arc over its entire length in comes into direct contact with the sheet guiding elements 2 the following sheets as a result of the scaled feed Sheet guiding elements 2 only in the trailing section of the Arch surface. Because of the scaled position If several sheets are on top of each other, the Stiffness of the arc current so that the arc movement in vertical direction (flutter) is stabilized and by the invention also a guide across the entire sheet width in the trailing section the bow is not required. This will make contact between the bow and the Sheet guiding elements additionally reduced and the risk of Damage to the top of the sheet, especially when the system is in place already printed sheets reduced.

Die erfindungsgemäß ausgeführten Bogenleitelemente 2 kompensieren die Verstellung der Saugfördereinrichtung 4 (in Bogentransportrichtung T) und der Halterungen 3 bzw. bei Anbringung der zu verstellenden Bogenleitelemente 2 an den seitlichen Stapelanschlägen 11 (orthogonal zur Bogentransportrichtung T) in den Formatverstellbereichen AC und BD. Wenn die Saugfördereinrichtung 4 in Bogentransportrichtung auf Bogenformat verstellt wird, verkürzen sich die Bogenleitelemente 2 entsprechend der Verstellung, indem die Wickelrollen 2b aufgrund der Rückstellkraft die bandförmigen Körper 2a aufwickeln. Wenn die Saugfördereinrichtung 4 gegen die Bogentransportrichtung T auf ein größeres Bogenformat verstellt wird, Längen sich die Bogenleitelemente 2, indem die bandförmigen Körper 2a von den o.g. Wickelrollen 2b gegen die Rückstellkraft abgewickelt werden. Je nach der Entfernung der Halterungen 3 von der Maschinenlängsmitte M, ist diese Längung bzw. Kürzung der Bogenleitelemente 2 relativ zum Weg der Verstellung der Saugfördereinrichtung 4 unterschiedlich. Wenn die Bogenanschläge 11,11' quer zur Bogentransportrichtung T verstellt werden, werden im gleichen Maß die o.g. Halterungen 3 zwischen den Punkten A und C bzw. B und D verstellt. Es ergeben sich die Verstellwege AC und BD. Den Verstellweg kompensieren wie oben beschrieben die Wickelrollen 2b. Wenn ein kleineres Bogenformat angelegt wird, fährt die Saugfördereinrichtung 4 abhängig vom Bogenlängsformat in Bogentransportrichtung T vor und die seitlichen Bogenanschläge 11,11' zusammen. Dadurch verkürzen sich sämtliche Bogenleitelemente 2 unter Erhaltung ihrer Spannung. Bei der Verstellung auf ein größeres Bogenformat werden die Bogenleitelemente 2 durch die umgekehrte Bewegung der Saugfördereinrichtung 4 und der seitlichen Stapelanschläge 11,11' verkürzen sich die Bogenleitelemente 2. Mit Verstellung der Taktrollen 5 bzw. der sie tragenden Träger 6 quer zur Bogenförderrichtung T auf Traverse 12, beispielsweise in druckfreie Bereiche von bereits oberseitig bedruckten Bogen, folgen die Bogenleitelemente 2 der Verstellung ohne weiteres. Die Bogenleiteinrichtung 1 kann - beispielsweise bei Anlage von Bogen hoher Steifigkeit - aus einer Arbeitsstellung gebracht werden, indem die bandförmigen Körper 2 aus den beschriebenen Umführeinrichtungen bzw. hakenförmigen Befestigungen an den Halterungen 3 bzw. der Saugfördereinrichtung 4 ausgehängt werden. Abhängig von dem Verhalten der zuzuführenden Bogen wird die Neigung der Bogenleitelemente 2 durch die Verstellung der Halterungen 8 auf Seiten der Saugfördereinrichtung 4 in senkrechter Richtung variiert. The sheet guiding elements 2 designed according to the invention compensate for the adjustment of the suction conveyor 4 (in Sheet transport direction T) and the brackets 3 or at Attachment of the sheet guide elements 2 to be adjusted to the lateral stacking stops 11 (orthogonal to Sheet transport direction T) in the format adjustment areas AC and BD. If the suction conveyor 4 in Sheet transport direction is adjusted to sheet format, shorten the sheet guide elements 2 according to the Adjustment by the winding rollers 2b due to the Restoring force wind the band-shaped body 2a. If the suction conveyor 4 against the Sheet transport direction T to a larger sheet size is adjusted, the sheet guide elements 2 by the ribbon-shaped body 2a from the above. Winding rolls 2b against the restoring force is handled. Depending on the distance the brackets 3 from the machine center M, this is Elongation or shortening of the sheet guide elements 2 relative to the path the adjustment of the suction conveyor 4 different. If the sheet stops 11, 11 'across Sheet transport direction T are adjusted in the same Measure the above Brackets 3 between points A and C or B and D adjusted. The adjustment paths AC and BD. Compensate the adjustment path as described above Winding rolls 2b. If a smaller sheet format is created is, the suction conveyor 4 moves depending on Longitudinal sheet format in the sheet transport direction T before and lateral bow stops 11, 11 'together. This will shorten it all sheet guide elements 2 while maintaining their Tension. When adjusting to a larger sheet format the sheet guide elements 2 by the reverse movement the suction conveyor 4 and the side Stacking stops 11, 11 'shorten the Sheet guiding elements 2. With adjustment of the clock rollers 5 or the carrier 6 carrying it transversely to the sheet conveying direction T. Traverse 12, for example in pressure-free areas of sheets already printed on the top, follow Sheet guide elements 2 of the adjustment without further notice. The Sheet guiding device 1 can - for example when creating Arch of high rigidity - brought from a working position by the band-shaped body 2 from the described Transfer devices or hook-shaped fastenings on the Mounts 3 and the suction conveyor 4 unhooked become. Depending on the behavior of the sheets to be fed is the inclination of the sheet guide 2 by the Adjustment of the brackets 8 on the side Suction conveyor 4 varies in the vertical direction.

BezugszeichenlisteReference list

11
BogenleiteinrichtungSheet guiding device
22nd
BogenleitelementeSheet guiding elements
2a2a
bandförmiger Körperband-shaped body
2b2 B
WickelrolleWinding roll
33rd
Halterungen (eingestellt auf min. Bogenformat)Brackets (set to min. Sheet format)
3'3 '
Halterungen (eingestellt auf max. Bogenformat)Brackets (set to max sheet format)
3b3b
AuslenkelementeDeflection elements
44th
SaugfördereinrichtungSuction conveyor
4b4b
SchleppsaugerDrag vacuum
55
TaktrollenClock rolls
66
TaktrollenträgerClock roller bearer
77
TaktrollenwelleClock roller shaft
88th
AuslenkmittelDeflection means
8a8a
Rollenroll
99
TransportbänderConveyor belts
1010th
Bogenstapel (min. Format)Sheet stack (min. Format)
10'10 '
Bogenstapel (max. Format)Sheet stack (max. Format)
1111
seitliche Stapelanschläge (eingestellt auf min. Format)lateral stacking stops (set to min. Format)
11'11 '
seitliche Stapelanschläge (eingestellt auf max. Format)lateral stacking stops (set to max. Format)
1212th
Traversetraverse
ACAC
FormatverstellbereichFormat adjustment range
BDBD
FormatverstellbereichFormat adjustment range
TT
BogentransportrichtungSheet transport direction
üü
BogenübergabepunktArc transfer point
E,FE, F
Stellposition auf Traverse 12Position on crossbar 12
G,HG, H
Befestigungsposition an der Saugfördereinrichtung 2Mounting position on the suction conveyor 2

Claims (12)

  1. Sheet-guide device for the supply region of a sheet-fed machine, said sheet-guide device comprising sheet-guide elements (2) being disposed above a sheet-feeding plane and, at the side facing the sheet-fed machine, being stationarily secured, as seen in the sheet transport direction and, on the opposite side, being secured to a suction-feed device (4) which is adjustable in and counter to the sheet transport direction, whereby the sheet-guide elements (2) can be lengthened by the amount of the adjustment made, and whereby each of the sheet-guide elements (2) is formed as a unit including a band-like body (2a) and at least one winding roller (2b) acted upon by a reverse-winding force to wind up the band-like body,
    characterised in
    that at the side facing the sheet-fed machine there are provided mounts (3) for securing the sheet-guide elements (2), with at least those mounts (3) which are disposed in the format-adjusting region (AC, BD) being adjustable crosswise to the sheet transport direction (T).
  2. Sheet-guide device for sheet-feeding devices for a supply region of a sheet-fed machine, comprising sheet-guide elements (2) being disposed above a sheet-feeding plane and, at the side facing the sheet-fed machine, being stationarily secured, as seen in the sheet transport direction and, on the opposite side, being secured to a suction-feed device (4) which is adjustable in and counter to the sheet transport direction, whereby the sheet-guide elements (2) can be lengthened by the amount of the adjustment made,
    characterised in
    that the sheet-guide elements (2) as band-like bodies (2a) are formed of highly elastic material, and that at the side facing the sheet-fed machine there are provided mounts (3) for securing the sheet-guide elements (2), with at least those mounts (3) which are disposed in the format-adjusting region (AC, BD) being adjustable crosswise to the sheet transport direction (T).
  3. Sheet-guide device according to Claim 1 or 2,
    characterised in
    that the sheet-guide elements (2) are disposed in a plane being spaced from the surface of the sheet stack (10, 10') by a distance which decreases continuously, as seen from the suction-feed device (4) along the sheet transport direction (T).
  4. Sheet-guide device according to Claim 1 or 2,
    characterised in
    that the band-like bodies (2a) are provided with a coating or sheathing of a material with a low coefficient of friction.
  5. Sheet-guide device according to Claim 1 or 2,
    characterised in
    that the mounts (3) disposed between the format adjustment regions (AC, BD) are mounted so as to be adjustable crosswise to the sheet transport direction (T).
  6. Sheet-guide device according to Claim 1 or 2,
    characterised in
    that in place of the mounts (3) disposed in the format adjustment region (AC, BD) for mounting the sheet-guide elements (2) there are used sheet stop means (11, 11') being adjustable crosswise to the sheet transport direction (T).
  7. Sheet-guide device according to one or several of the preceding claims,
    characterised in
    that at the suction-feed device (4) there are provided deflection means (8) for deflecting the band-like bodies (2a) downward in a vertical direction.
  8. Sheet-guide device according to Claim 7,
    characterised in
    that the deflection means (8) are mounted to be adjustable in vertical direction relative to said suction-feed device (4).
  9. Sheet-guide device according to Claim 6,
    characterised in
    that the mounts, at their lower ends, include rollers (8a) over which the band-like bodies (2a) are guided.
  10. Sheet-guide device according to one or several of the preceding claims,
    characterised in
    that the band-like bodies (2a) of one or multiple sheet-guide elements (2), via deflection means, are guided forth and back one or multiple times between the mounts (3) on the side of the sheet-fed machine and the suction-feed device (4).
  11. Sheet-guide device according to one or several of the preceding claims,
    characterised in
    that more than one respective band-like body (2a) are wound onto a common winding roller (2b).
  12. Sheet-guide device according to Claim 2,
    characterised in
    that the sheet-guide elements (2) are formed of rubber.
EP96114923A 1995-10-06 1996-09-18 Sheet guiding device for sheet feeder Expired - Lifetime EP0767120B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19537284A DE19537284C1 (en) 1995-10-06 1995-10-06 Sheet guide unit for sheet feeder attachment of printing machine
DE19537284 1995-10-06

Publications (3)

Publication Number Publication Date
EP0767120A2 EP0767120A2 (en) 1997-04-09
EP0767120A3 EP0767120A3 (en) 1997-11-05
EP0767120B1 true EP0767120B1 (en) 2000-12-27

Family

ID=7774213

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96114923A Expired - Lifetime EP0767120B1 (en) 1995-10-06 1996-09-18 Sheet guiding device for sheet feeder

Country Status (4)

Country Link
US (1) US5863037A (en)
EP (1) EP0767120B1 (en)
JP (1) JPH09124181A (en)
DE (2) DE19537284C1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19728076C2 (en) * 1997-01-22 2003-09-11 Roland Man Druckmasch sheet feeder
DE19713919C1 (en) * 1997-04-04 1998-07-02 Kba Planeta Ag Sheet guide for sheet feeder
DE19724733C2 (en) * 1997-06-12 2001-10-04 Roland Man Druckmasch Sheet feeder
DE19856243A1 (en) * 1997-12-20 1999-06-24 Heidelberger Druckmasch Ag Air supply for linear lifters or conveyors in sheet processing machine
RU2237003C2 (en) * 1999-02-05 2004-09-27 Фераг Аг Device for separating flat articles from pile, particularly, printed matter
JP2005041202A (en) 2003-07-24 2005-02-17 Heidelberger Druckmas Ag Apparatus for transferring sheet within printing machine
TWI241241B (en) * 2003-10-13 2005-10-11 Bobst Sa Blank diecutting machine
DE102005046685A1 (en) * 2005-09-29 2007-04-05 Heidelberger Druckmaschinen Ag Sheet guiding device for sheet feeder
DE102006039986A1 (en) * 2006-08-25 2008-02-28 Koenig & Bauer Aktiengesellschaft Sheet guiding device for sheet feeder
DE102021111315A1 (en) 2021-05-03 2022-11-03 Koenig & Bauer Ag Device and method for separating flat goods and for feeding them to a processing unit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190007503A (en) * 1900-04-23 1900-06-02 Thomas King Muir A New or Improved Filling for the Interstices existing Between Paving Blocks.
US2156139A (en) * 1936-11-17 1939-04-25 Backhouse Headley Townsend Sheet feeding machine
US3482833A (en) * 1967-09-25 1969-12-09 Miller Printing Machinery Co Sheet feeder assembly
DD261573A1 (en) * 1987-05-29 1988-11-02 Polygraph Leipzig ARC BLANK IN BOWERS
DD271679A1 (en) * 1988-05-02 1989-09-13 Polygraph Leipzig BOW GUIDE IN BOWERS

Also Published As

Publication number Publication date
DE19537284C1 (en) 1996-10-24
US5863037A (en) 1999-01-26
EP0767120A2 (en) 1997-04-09
EP0767120A3 (en) 1997-11-05
DE59606251D1 (en) 2001-02-01
JPH09124181A (en) 1997-05-13

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