EP0363662B1 - Vorrichtung zum Transportieren von plattenförmigen Gegenständen in einer Rotationsdruckmaschine - Google Patents

Vorrichtung zum Transportieren von plattenförmigen Gegenständen in einer Rotationsdruckmaschine Download PDF

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Publication number
EP0363662B1
EP0363662B1 EP89116903A EP89116903A EP0363662B1 EP 0363662 B1 EP0363662 B1 EP 0363662B1 EP 89116903 A EP89116903 A EP 89116903A EP 89116903 A EP89116903 A EP 89116903A EP 0363662 B1 EP0363662 B1 EP 0363662B1
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EP
European Patent Office
Prior art keywords
plate
drive rollers
crosswise
apertures
printing
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
EP89116903A
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English (en)
French (fr)
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EP0363662A2 (de
EP0363662A3 (en
Inventor
Charles Stark
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.)
Bobst Mex SA
Original Assignee
Bobst SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Bobst SA filed Critical Bobst SA
Priority to AT89116903T priority Critical patent/ATE91462T1/de
Publication of EP0363662A2 publication Critical patent/EP0363662A2/de
Publication of EP0363662A3 publication Critical patent/EP0363662A3/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B65H29/241—Suction devices
    • B65H29/243—Suction rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/31—Suction box; Suction chambers
    • B65H2406/312—Suction box; Suction chambers incorporating means for transporting the handled material against suction force
    • B65H2406/3122—Rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B65H2701/1762—Corrugated

Definitions

  • the present invention relates to a device for transporting plate elements in a rotary printing machine in several colors for plate elements, more particularly for thick or corrugated cardboard elements.
  • Such machines have large dimensions of the order of 5 m long by 3 m wide and may include a feeding station, several printing stations for a full color result, and, if necessary, a cutting station, an ejection station and a final station for receiving plate elements.
  • a feeding station may include a feeding station, several printing stations for a full color result, and, if necessary, a cutting station, an ejection station and a final station for receiving plate elements.
  • the device currently used comprises a horizontal frame carrying a series of striated trees orthogonal to the direction of movement of the leaves.
  • Two side members carry transport rollers arranged opposite each striated shaft. These two beams are kept symmetrical in a lateral function defined with respect to the longitudinal axis of the machine. These beams are supported by two transverse shafts intended, on the one hand, to maintain the vertical position of the beams and, on the other hand, to drive the transport rollers.
  • the lateral movement of the side members is ensured by threaded pins acting in pairs on each of the side members.
  • threaded pins acting in pairs on each of the side members.
  • the latter device has many drawbacks. As can easily be understood, it is obvious that the two lateral edges or the places on which the transport rollers and the ridged shafts act must be free to print if the transported sheet is not to be smudged.
  • the width of the sheet should be increased so as to obtain transport over a free printing area. This of course corresponds to an undesirable waste.
  • a third drawback lies in the fact that in use it appears that the adjustments of this device as a function of the width and of the thickness of the sheet are tedious. Indeed, if it is easy to motorize the lateral movement of the side members, the adjustment of the vertical position of the cradle cannot be done with sufficient precision than mechanically, by a large set of cams, pinions and levers. As with any adjustment, several tests should be carried out followed by corrections to obtain a satisfactory result. Even after such adjustments made with seriousness, it is not impossible that the longitudinal and lateral adjustment of certain sheets may change during production. Last but not least, this device involves significant mechanics, thereby increasing the production costs and reducing in a certain way the accessibility in the upper part of the printing stations precisely at the level of the contact between the pressure roller and the door roller. - shots.
  • Document NL 275 252 discloses a device installed at the outlet of a cutting station, this device comprising a vacuum box surmounted by a suction pump and the underside of which is perforated with a mesh of orifices.
  • the blanks delivered on a mobile table are lifted by suction through the mesh of holes or orifices to come to press against the endless conveyor belts and to be thus transported to another conveyor.
  • document DE 2 946 960 discloses a device using suction to introduce sheets into a photocopier or a fax machine, this introduction consisting of a first operation of lifting the first sheet from a stack, then a second transport operation to downstream drive rollers.
  • This device comprises a box containing two axes transverse to the movement of the sheet, each provided with a series of driving rollers arranged side by side. These axes are rotated by an endless belt set in motion by a pulley and a motor.
  • the underside of this box has large holes in the shape of comb teeth so that the lower part of the circumference of the rollers emerges from the box downwards.
  • This box further includes a fan to create a depression sufficient to suck up and lift the first sheet of a pile which then wraps all of the emerging part of the first roll.
  • the object of the present invention is to provide a device for transporting plate elements in a rotary machine for printing plate elements which is efficient, that is to say rapid and without any possibility of longitudinal and lateral deviation. plate elements. It is moreover desirable that the operator is freed from any adjustment on the transport device itself, or that, if an adjustment is necessary, it is directly carried out by an adjustment normally applied to the corresponding printing stations. Finally, this device must give off a better volume of accessibility between the cylinders of the printing stations, this volume possibly being able to be used to carry out additional operations such as drying for example.
  • the present invention relates to a device for transporting plate elements as described in claim 1.
  • the suction means consist of a fan operating so as to create a vacuum inside the assembly defined by the collector and the horizontal frame closed by the perforated plate
  • the collector may advantageously be constituted by a plurality of separate boxes and the fan of the variable flow type.
  • the drive means of the shafts comprise a first series of pinions coupling each toothed wheel which belongs to a first upstream group of shafts to its or its two neighbors, a second series of pinions also coupling to its neighbors, so identical, each toothed wheel which belongs to a second downstream group of shafts.
  • the motor unit applies a torque through a transmission bar to two reduction boxes, each of the boxes animating a series of gears respectively.
  • FIG. 1 the upper downstream part of a rotary flexographic printing station (100) is illustrated on the right side.
  • a plate cylinder (110) with its corresponding pressing cylinder (120) arranged parallel above.
  • the inkwell and the associated dispensing cylinders are arranged in the lower part of the station.
  • an element (130) passes between the plate cylinder (110) and the pressing cylinder (120), it is printed on its underside by the plate (111).
  • the next downstream printing station is not immediately attached to this upstream printing station (100), but an access space (50) provided with the transport device according to the invention is Reserve.
  • This transport device first comprises a frame essentially consisting of two lateral beams (200, 201) interconnected by a series of crosspieces (202). This frame connects the upper part of the consecutive flexography printing stations.
  • These side rails (200, 201) carry a series of shafts (230), mutually parallel and orthogonal to the direction of movement of the elements (130). So that these shafts (230) are rotatable, their ends are respectively engaged in bearings (210) integrated in the side rails (200, 201).
  • These shafts (230) have, cut in the mass, a series of driving rollers (240).
  • the surface of these driving rollers can be smooth, ridged or have a projection of ceramic similar to sandpaper.
  • the shafts (230) pass through the lateral spar (201), opposite the conductive side, and are provided, at their respective ends, with a toothed wheel (250) allowing them to be driven in rotation as will be described by the after.
  • the frame comprises 14 trees (230) with a diameter equal to 7 cm.
  • Each of the shafts (230) carry 9 long rolls of 10 cm, spaced every 5 cm and having an outside diameter of about 9 cm.
  • a plate (260) is provided to cover the underside of the frame except at the level of rectangular openings through which the lower portion of the drive rollers (240) pass in correspondence.
  • the bearings (210) are located in the side rails (200, 201) of the frame so that the drive rollers (240) emerge downward from the plate (260).
  • the driving roller (240) emerges out of this plate (260).
  • the downstream edges (265) of these openings are folded upwards, that is to say in the direction of the axis of rotation of the rollers (240). This particular shape of the downstream edge of the opening prevents the front edge of the element (130), driven by the roller (240), from being embedded in the plate at this location.
  • this plate (260) covers in the lower face of the frame the intervals between the rollers (240) leaving a clearance around each emerging lower part of these drive rollers (240).
  • the toothed wheels (250) located at the end of the shafts (230) and at the rear of the side member (201) are driven by a series of pinions (247) which connect them to the toothed wheels neighbors.
  • This gear train is arranged along the beam (201).
  • a driving member such as an independent electric motor or a shaft for transmitting the driving force of the previous printing station or the driving force coming from the central engine of the machine, is connected by a reduction box to either the first toothed wheel ( 250) or to the first pinion (247).
  • the number of trees (230) to be animated is greater than approximately 10, it becomes preferable to separate them into two groups, an upstream, a downstream, having a distinct set of gears.
  • the same driving force must be split, to activate two Separate reduction boxes each meshing with a group of pinions (247) and cogwheels (250). This duplication can be achieved conventionally by a transmission bridge.
  • the device further comprises a manifold in the form of a hood (300) covering the upper face of the frame. Directly mounted at the top of this hood, there is a fan (310) which can discharge air through a duct (320). Alternatively, only the duct (320) is connected to the top of the hood (300), and the fan (310) is installed in another more accessible part of the machine. Given the small passage for air, limited to the interstices between the plate (260) and each lower part of the rollers (240), this fan creates in regular operation a vacuum inside this hood. After numerous tests in the workshop, it turned out that a depression of the order of three millibars is sufficient for the proper functioning of the device.
  • this hood (300) can be subdivided into several smaller boxes, each having its own outlet for extracting air (320) associated with the fan (310) or else with a respective fan.
  • the lower parts of the driving rollers (240) lie in the same horizontal plane as the lower part of the pressure roller (120) of the upstream and downstream rotary printing stations. , that is to say in a plane corresponding to the plane defined by the upper part transported items.
  • the conveyor device operates in the following manner: when the printing machine starts, the fan (310) is also put into operation very quickly creating a vacuum. Then, when the machine is switched on, so that the elements (130) start to advance, the shafts (230) are rotated clockwise. Then, when an element (130) starts to come out of the printing station (100), as illustrated in FIG. 1, its front edge is sucked against the rollers (240). By their rotation, therefore by the forward friction force which they exert, these rollers advance the element. As can best be seen in FIG. 2, the element (130), which is sufficiently rigid, never comes into contact with the plate (260). At most, this element is shaped slightly around driving rollers (240) which increases the thrust force imparted by these rollers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Discharge By Other Means (AREA)
  • Handling Of Cut Paper (AREA)
  • Rotary Presses (AREA)
  • Making Paper Articles (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)

Claims (8)

  1. Vorrichtung zum Transport von plattenartigen Werkstücken (130) mit
    - einem horizontalen Rahmen aus zwei untereinander durch Querstreben (202) verbundenen seitlichen Längsträgern (200, 201), wenigstens einer Querwelle (230), die an ihren Enden in den erwähnten seitlichen Längsträgern (200, 201) gehalten werden, wobei die erwähnte Querwelle (230) mit einer Reihe von nebeneinander angeordneten Antriebsrollen (240) versehen ist,
    - Mitteln zum Antreiben der Querwelle(n) (230),
    - wenigstens einem Ansaugmittel mit einem Kollektor wie eine Haube (300), die die oberen Seiten der einzelnen seitlichen Längsträger (200, 201) miteinander verbindet,
    - einer unteren an der Unterseite der beiden seitlichen Längsträger (200, 201) angeordneten, durchbrochenen Platte (260), wobei die besagten Antriebsrollen (240) im Innern des horizontalen Rahmens so angeordnet sind, dass der untere Teil ihres Umfangs aus der durch die untere, durchbrochene Platte (260) gebildeten Ebene herausragt,
    dadurch gekennzeichnet, dass bei einem Einsatz in einer Rotationsmaschine zum Bedrucken von plattenartigen Werkstücken aus Wellpappe oder dicker Vollpappe
    - der untere Teil der einzelnen Antriebsrollen (240) sich in einer durch die Oberseite der durch die Rotationsdruckmaschine beförderten, plattenartigen Werkstücke (130) gebildeten Ebene befindet,
    - die Öffnungen in der unteren, durchbrochenen Platte (260) so ausgebildet sind, dass um den herausragenden Teil der Antriebsrollen (240) ein Zwischenraum besteht.
    - der vordere Rand der einzelnen Öffnungen der unteren, durchbrochenen Platte (260) nach oben gegen die Antriebsrollen (240) gebogen ist und
    - der besagte Rahmen Mittel zum Einregulieren der vertikalen Stellung der Antriebsrollen (240) entsprechend der Dicke der plattenartigen Werkstücke (130)
    umfassen.
  2. Vorrichtung gemäss Patentanspruch 1, dadurch gekennzeichnet, dass die Ansaugmittel aus einem Ventilator (310) bestehen, der im Innern einer Baugruppe, die aus dem Kollektor und dem durch die durchbrochene Platte (260) geschlossenen, horizontalen Rahmen besteht, einen Unterdruck bildet.
  3. Vorrichtung gemäss Patentanspruch 1, dadurch gekennzeichnet, dass der Kollektor aus einer Mehrzahl getrennter Kammern besteht.
  4. Vorrichtung gemäss Patentanspruch 2, dadurch gekennzeichnet, dass der Ventilator (310) eine variable Leistung ermöglicht, damit der Unterdruckwert im Innern der Baugruppe, die aus dem Kollektor und dem durch die durchbrochene Platte (260) geschlossen, horizontalen Rahmen besteht, reguliert werden kann.
  5. Vorrichtung gemäss Patentanspruch 1, dadurch gekennzeichnet, dass die Mittel zum Antrieben der Querwelle(n) (230)
    - ein Zahnrad (250) an jedem Ende der Querwelle (230) ein und der selben Seite der Maschine,
    - eine Anzahl Ritzel (247) zur Koppelung der einzelnen Zahnräder (250) mit dem oder den ihnen benachbarten Zahnrädern, sowie
    - ein Motoraggregat zur Übertragung eines Drehmoments auf das erste Zahnrad (150) oder auf das erste Ritzel (247)
    umfassen.
  6. Vorrichtung gemäss Patentanspruch 5, dadurch gekennzeichnet, dass
    - eine erste Reihe Ritzel (247) mit den einzelnen Zahrädern (250), die einer ersten Gruppe Querwellen (230) und der, bzw. den benachbarten Zahrädern zugehören, im Eingriff steht,
    - eine zweite Reihe Ritzel (247) auf gleiche Weise mit den einzelnen Zahrädern (250), die einer zweiten Gruppe Querwellen (230) zugehören, im Eingriff steht,
    - das Motoraggregat sein Drehmoment über eine Transmissionswelle an zwei Reduktionsgetriebe übermittelt, von welchen jedes eine Reihe Ritzel (247) oder entsprechende Zahnräder (250) antreibt.
  7. Vorrichtung gemäss Patentanspruch 1, dadurch gekennzeichnet, dass die Mittel zum Einregulieren der vertikalen Stellung der Antriebsrollen (240) aus einem Verbindungsorgan bestehen, das die seitlichen Längsträger (200, 201) und die Halter zum Einregulieren der Stellung der Druckzlinder (120) einer Druckstation (100) in einer Rotationsmaschine verbindet.
  8. Vorrichtung gemäss Patentanspruch 7, dadurch gekennzeichnet, dass die Mittel zum Einregulieren der vertikalen Stellung der Antriebsrollen (240) aus einem Regulierorgan bestehen, das auf die vertikale Stellung des Plattenzylinders (110) einer Druckstation (100) der Rotationsmaschine einwirkt.
EP89116903A 1988-10-12 1989-09-13 Vorrichtung zum Transportieren von plattenförmigen Gegenständen in einer Rotationsdruckmaschine Expired - Lifetime EP0363662B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89116903T ATE91462T1 (de) 1988-10-12 1989-09-13 Vorrichtung zum transportieren von plattenfoermigen gegenstaenden in einer rotationsdruckmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3807/88A CH678413A5 (de) 1988-10-12 1988-10-12
CH3807/88 1988-10-12

Publications (3)

Publication Number Publication Date
EP0363662A2 EP0363662A2 (de) 1990-04-18
EP0363662A3 EP0363662A3 (en) 1990-07-18
EP0363662B1 true EP0363662B1 (de) 1993-07-14

Family

ID=4263879

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89116903A Expired - Lifetime EP0363662B1 (de) 1988-10-12 1989-09-13 Vorrichtung zum Transportieren von plattenförmigen Gegenständen in einer Rotationsdruckmaschine

Country Status (10)

Country Link
US (1) US5004221A (de)
EP (1) EP0363662B1 (de)
JP (1) JPH0729713B2 (de)
AT (1) ATE91462T1 (de)
AU (1) AU623935B2 (de)
BR (1) BR8905158A (de)
CA (1) CA1324623C (de)
CH (1) CH678413A5 (de)
DE (2) DE68907547T4 (de)
ES (1) ES2041382T3 (de)

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US5228391A (en) * 1990-12-31 1993-07-20 Howard W. DeMoore Vacuum transfer apparatus for rotary sheet-fed printing presses
US5243909A (en) * 1990-12-31 1993-09-14 Howard W. DeMoore Vacuum transfer apparatus for rotary sheet-fed printing presses
US5205217A (en) * 1990-12-31 1993-04-27 Howard W. DeMoore Vacuum transfer apparatus for rotary sheet-fed printing presses
US5133255A (en) * 1990-12-31 1992-07-28 Howard W. DeMoore Vacuum transfer apparatus for rotary sheet-fed printing presses
US5509352A (en) * 1994-09-23 1996-04-23 Ward Holding Company Paperboard processing machine with vacuum transfer system
US5564693A (en) * 1995-02-01 1996-10-15 Ward Holding Company, Inc. Paperboard processing machine with vacuum transfer system
JP4156733B2 (ja) * 1998-12-08 2008-09-24 リンテック株式会社 貼付装置
US6179285B1 (en) * 1999-01-19 2001-01-30 Xerox Corporation Media transport assembly incorporating vacuum grooves to flatten sheet
AU757899B2 (en) * 1999-01-22 2003-03-13 Sun Automation, Inc. Box making machines and method of retrofitting
US6179763B1 (en) * 1999-01-22 2001-01-30 Sun Automation Inc. Box making machines and method of retrofitting
US6591749B2 (en) * 2000-11-08 2003-07-15 Ward, Inc. Printing machine with improved vacuum transfer
US7669530B2 (en) * 2003-05-16 2010-03-02 Printing Research, Inc. UV curing assembly having sheet transfer unit with heat sink vacuum plate
US6873821B2 (en) * 2003-06-26 2005-03-29 Xerox Corporation Thermally uniform sheet transport for printers
KR101299908B1 (ko) 2009-02-02 2013-08-23 봅스트 맥스 에스에이 처리 기계의 인피드 스테이션에서 플레이트 요소의 위치를 결정하는 장치
JP5342495B2 (ja) * 2010-04-15 2013-11-13 株式会社梅谷製作所 段ボールシート印刷機
US9126381B2 (en) * 2010-09-07 2015-09-08 Sun Automation, Inc. Box making machines
US8434761B2 (en) * 2011-02-04 2013-05-07 Xerox Corporation Alternating grooved beltless vacuum transport roll
CN103987524B (zh) 2011-10-24 2016-12-21 鲍勃斯脱梅克斯股份有限公司 印刷机的调整方法和装置
CN103144919A (zh) * 2013-03-08 2013-06-12 苏州新协力特种工业模板有限公司 自动运板架
US9493307B2 (en) 2014-03-11 2016-11-15 Sun Automation, Inc. Conveyors for box making machines
ES2681961B1 (es) * 2017-03-17 2019-06-27 Simon Corrugated Machinery S L Dispositivo y procedimiento para el transporte de láminas flexibles
DE102022115649A1 (de) 2022-06-23 2023-12-28 Koenig & Bauer Ag Vorrichtung zum Transport von Bogen durch eine Bearbeitungsmaschine sowie Verfahren zum Bogentransport

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Also Published As

Publication number Publication date
CH678413A5 (de) 1991-09-13
DE68907547T4 (de) 1996-08-01
ES2041382T3 (es) 1993-11-16
CA1324623C (en) 1993-11-23
AU4274789A (en) 1990-04-26
BR8905158A (pt) 1990-05-15
JPH02188364A (ja) 1990-07-24
DE68907547T2 (de) 1993-11-04
AU623935B2 (en) 1992-05-28
EP0363662A2 (de) 1990-04-18
JPH0729713B2 (ja) 1995-04-05
US5004221A (en) 1991-04-02
EP0363662A3 (en) 1990-07-18
DE68907547D1 (de) 1993-08-19
ATE91462T1 (de) 1993-07-15

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