EP0587531A2 - Method and device for feeding correctly orientated sheets to a folding machine - Google Patents

Method and device for feeding correctly orientated sheets to a folding machine Download PDF

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Publication number
EP0587531A2
EP0587531A2 EP93810601A EP93810601A EP0587531A2 EP 0587531 A2 EP0587531 A2 EP 0587531A2 EP 93810601 A EP93810601 A EP 93810601A EP 93810601 A EP93810601 A EP 93810601A EP 0587531 A2 EP0587531 A2 EP 0587531A2
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EP
European Patent Office
Prior art keywords
sheet
feed table
speed
folding machine
printer
Prior art date
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Granted
Application number
EP93810601A
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German (de)
French (fr)
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EP0587531B1 (en
EP0587531A3 (en
Inventor
Otto Dipl.-Ing. Bay
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Individual
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/12—Registering, e.g. orientating, articles; Devices therefor carried by article grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
    • B65H5/062—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers between rollers or balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions

Definitions

  • the invention relates to a method for feeding sheet sheets of different rectangular formats, which are output by a printer or copier at a first speed onto a feed table and then fed to a folding machine, sensor means for determining the sheet format being present and selectively at least one predetermined one Sheet format is rotated by 90 ° relative to the table level.
  • the invention relates to a device, in particular for performing the method.
  • Electrostatic printers are known for producing large-format drawings. Printing takes place from paper rolls, whereby two or more paper rolls of different widths can be present. The drawings are printed either lengthways or transversely to the longitudinal direction of the web. Such large-format drawings can be folded immediately after printing by folding machines known per se. The folding process must take place in such a way that after folding the head or the parts list always lies on the top sheet, i.e. the cover sheet. The folding machine can be programmed so that a different number of folds can be carried out depending on the sheet length.
  • CH-PS 650 221 a device for transporting rectangular sheets is known, or the like from a copier. are output and turned through 90 ° so that they can be fed to a downstream processing device in the correct position.
  • the turning process takes place in such a way that a stationary needle-like holding member is eccentrically inserted into the sheet arch along the transport path and the linear moving transport members located to the side of this holding member cause a pivoting movement of the sheet arch by 90 °.
  • Disadvantages are the slow transport and the large space requirement of the feed table in the longitudinal and transverse directions, including transverse transport elements for the sheet sheets.
  • the object is to be achieved by a printer or the like. Continuously output large-format sheets, which are incurred indiscriminately in the longitudinal and landscape format, with the avoidance of manual work, depending on the format, to feed a folding machine in the correct position with a small footprint of the feed table between the printer and the folding machine.
  • sheet sheets can be fed continuously to the feed table without the turning process being disrupted in the case of predetermined sheet sheet formats.
  • the different sheet formats fed in random order are recognized on the feed table and only those are selected which require a 90 ° rotation in order to be fed to the folding machine in the correct position. Under fit is understood that after the folding process the head or the parts list always lies on the cover sheet, preferably at the foot, in a readable position.
  • printers and copiers on the market for the production of large-scale drawings from a roll.
  • “Printers” are to be understood in particular to mean electrostatic printers and other photographic production processes.
  • the printer or the like can work from two or more paper supply rolls of different widths.
  • the printed drawings of standardized rectangular size continuously arrive on a feed table 2, to which a folding machine 9 is connected.
  • These sheets 3, for example in the form of large-area machine or construction drawings, are each provided with an inscription head 11, 12 or a parts list, which should be on the top of the cover sheet after folding. Since the folding program of the folding machine is given, this presupposes that the drawings with their labeling head 11, 12 or parts list are to be inserted into the folding machine in a predetermined position. Since the printed drawings can be in either longitudinal or landscape format, one format must be rotated by 90 ° on the feed table.
  • Fig. 1 the output of a drawing in standard format A1 (592 x 841 mm) corresponding to the paper roll width is shown as an example, in which the longitudinally extending parts list 11 is located on the upper left edge.
  • the printer can also output a drawing in standard format A2 (420 x 594 mm), in which the parts list 12 comes to lie transversely to the lower edge of the sheet.
  • the A2 format corresponds to half of the A1 format.
  • the position of the parts list 12 differs from the position of the parts list 11 of the format A1, as is shown in full lines in FIG. 1.
  • the printer or the like can output sheets from a second, narrower supply roll, for example A3 (297 x 420 mm), the A4 format also having to be turned over.
  • a second, narrower supply roll for example A3 (297 x 420 mm)
  • the A4 format also having to be turned over.
  • these sheet standard sizes A3 and A4 were not shown in FIG. 1; however, the turning principle is the same.
  • the sheet sheets 3 output by the printer 1 or the like and reaching the feed table 2 are scanned by sensors 5-8 to determine their format.
  • the scanning is carried out by three sensors 5, 6, 7, which are arranged one behind the other in the sheet feed direction Z in the table center area and to which a fourth sensor 8 is laterally assigned.
  • the selection circuit recognizes this sheet size A2.
  • the sensor 7 covers the sheet sheet A2 and at the same time releases the sensor 5, a rotary movement of this sheet sheet 3 is initiated.
  • the rotary movement is clockwise according to arrow U through an angle of 90 ° around the center of the blade P.
  • the sensors 4-8 are preferably light barriers; however, microswitches or the like could also be used.
  • the sensors are preferably reflection light sensors which are embedded in the feed table flush with the table surface. It is also possible to temporarily stop the transport members 10 during the rotary movement.
  • FIG. 3 shows the design of the feed table 2.
  • the table surface is penetrated from below by a plurality of transport rollers 10, 17, which are driven by two drive motors 13, 19 via toothed belts 14 and are controlled by the electrical control 33.
  • Above these transport rollers 10 are in four support rails attached to the cross member 24 in loose support metal balls 16 which, by their own weight, press an intermediate sheet against the transport rollers 10 and thereby bring about the sheet feed.
  • the transport rollers 17 located on the right in FIG. 3 are driven at a higher speed than the inlet-side transport rollers 10, so that the sheet sheets 3 are transported towards the folding machine 9 at a higher speed.
  • the folding machine 9 operates at a higher speed than the output speed of the printer 1 corresponds.
  • the transport rollers 10 are each provided with a conventional overrunning freewheel, which has the effect that a sheet caught by the faster-running transport rollers 17 is not inhibited by the slower-driven transport rollers 10.
  • the different speeds of the transport rollers 10 and 17 could also be achieved by a single motor 13 by means of different transmission ratios instead of by two different drive motors 13, 19, this being done by a transmission gear 27 with clutch.
  • the drive movement can be taken directly from drive elements 37 (FIG. 2) of the printer 1.
  • the 4 is designed to carry out a rotary movement of the sheet sheet 3 in the A2 format by 90 °. It contains a turntable 20 arranged flush with the table surface, above which there is a rotatably mounted counter pressure plate 22 at a distance.
  • the counter-pressure plate 22 is fastened to a yoke 24 which extends across the feed table 2 and on which four holders 21 also hang.
  • the lifting movement of the turntable 20 is carried out by a solenoid-type electromagnet 26, the central, vertical plunger 28 of which is connected to a rotatable shaft 30 via a roller bearing housing 32.
  • the electromagnet 26 is rigidly connected to the feed table 2 via a U-shaped holding plate 34 and a bearing body 36.
  • the shaft 30 is rotatably supported in a ball bearing 38 at the bottom and in a slide bearing 40 at the top and is axially movable.
  • a cross bolt 42 which is non-rotatably connected to the turntable 20, penetrates a longitudinal slot 44 of the shaft 30.
  • This hub 46 is rigidly connected to a drive wheel 48.
  • a toothed belt 50 is around this drive wheel 48 and wrapped around a pinion 49 of a stepper motor 54.
  • the stepper motor 54 is rigidly connected to the bearing body 36. The electrical control of this stepper motor 54 takes place via a control circuit 25.
  • the axis 30 and the turntable 20 rigidly connected to it can execute both an axial movement and a rotary movement.
  • a spring 23 causes the shaft 30 to retract into the rest position.
  • the feed table 2 presses against a stop 57 and can be pivoted up about a horizontal pivot axis 56. As a result, the entire feed table 2 can be pivoted upwards in accordance with arrow 55 in order to provide good accessibility between the printer 1 and the folding machine 9.
  • the mode of action is as follows:
  • a sheet 3 When a sheet 3 is fed to the feed table 2 from a printer 1 or the like at a first speed, namely the printer output speed, its format can be determined by the sensors 5-8 by evaluating the covered and free sensors. It is assumed that a sheet of sheet 3 with the format A2 is to be turned through 90 ° in order to be inserted in the correct position into the folding machine 9 which directly adjoins the feed table 2.
  • a suitable folding machine is shown in U.S. Patent No. 5,045,039.
  • the format selection circuit 15 causes the electrical control element 29 of the lifting and rotating assembly 18 to be activated, so that the sheet is raised in its middle section and between the turntable 20 and the counter-pressure plate 22 is clamped.
  • the cutting motor 54 starts and causes a rotation of 90 ° in a plane parallel to the table level.
  • the control member 29 causes the turntable 20 to be lowered again, whereupon the sheet 2 is gripped by the conveyor rollers 17. These are driven by the motor 13 at a second speed which is about three times higher than the running-in speed and which preferably corresponds to the working speed of the folding machine 9.
  • the drive rollers 17 could be driven by drive members of the folding machine instead of a motor 13.
  • the motor 13 is controlled by a control member 33. This increased take-off speed prevents faults with continuously new sheet sheets 3.
  • the turntable 20 does not need to be turned back, since the stepper motor 54 again executes a predetermined rotary movement by the stepper motor controller 25 during the next stroke movement.
  • One embodiment variant is that even abnormally long formats can be fed directly to the folding machine 9, e.g. long electrical schematics.
  • the control device is modified in such a way that when all sensors 4-7 are covered, the electric motor 13 and the folding machine 9 are lowered in the sheet transport speed and converted to the transport speed of the printer 1. This prevents the sheet that has not yet left the printer from being drawn into the folding machine which operates at a higher folding speed. As soon as the rear sheet edge has released the sensor 4 or, if need be, an even further sensor on the printer side, the sheet transport and folding machine speed can be increased again.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

The sheet format (3) output from a printer (1) is sensed on a feed table (2) by sensors (4-8). Predetermined sheet formats have to be rotated through 90 DEG so that they can subsequently be fed in a positionally correct manner to a folding machine (9). The rotation operation for selected sheets (3) is carried out by lifting the sheet by means of a lifting-rotating element (18). After the rotation operation and lowering, the sheet is conveyed away at elevated speed and fed to a folding machine in a direction (Z2) identical to the feed-in direction (Z1). This results in a very compact design with low space requirement between the printer (1) and folding machine (9). <IMAGE>

Description

Die Erfindung bezieht sich auf ein Verfahren zur Zufuhr von Blattbogen unterschiedlicher Rechteckformate, die von einem Drucker oder Kopierer mit einer ersten Geschwindigkeit auf einen Zufuhrtisch ausgegeben und hernach einer Faltmaschine zugeführt werden, wobei Sensor-Mittel zur Feststellung des Blattformates vorhanden sind und selektiv mindestens ein vorbestimmtes Blattformat um 90° relativ zur Tischebene verdreht wird.The invention relates to a method for feeding sheet sheets of different rectangular formats, which are output by a printer or copier at a first speed onto a feed table and then fed to a folding machine, sensor means for determining the sheet format being present and selectively at least one predetermined one Sheet format is rotated by 90 ° relative to the table level.

Ferner bezieht sich die Erfindung auf eine Vorrichtung, insbesondere zur Durchführung des Verfahrens.Furthermore, the invention relates to a device, in particular for performing the method.

Es sind elektrostatische Printer bekannt zur Herstellung grossformatiger Zeichnungen. Der Druck erfolgt ab Papierrollen, wobei zwei oder mehr Papierrollen unterschiedlicher Breite vorhanden sein können. Der Druck der Zeichnungen erfolgt entweder längs oder quer zur Bahnlängsrichtung. Derartige grossformatige Zeichnungen können unmittelbar nach dem Druck durch an sich bekannte Faltmaschinen gefaltet werden. Der Faltvorgang muss so erfolgen, dass nach dem Falten stets der Kopf oder die Stückliste auf dem obersten Blatt, also dem Deckblatt zu liegen kommt. Die Faltmaschine kann so programmiert werden, dass eine unterschiedliche Zahl von Faltungen durchgeführt werden kann, in Abhängigkeit der Blattlänge. Damit aber die Forderung erfüllt werden kann, dass sich der Kopf oder die Stückliste nach dem Faltvorgang stets auf dem Deckblatt befindet, ist es notwendig dafür zu sorgen, dass die Zeichnungen welche den Printer verlassen - bei gegebener Papierrollenbreite - unabhängig davon, ob sie in Längs- oder Querlage auf dem Papierband gedruckt sind, der Faltmaschine stets so zugeführt werden, dass der Kopf oder die Stückliste im flachen Zustand eine übereinstimmende vorbestimmte Lage hat. Dies bedeutet, dass beispielsweise Zeichnungen, die ab einer ersten, breiten Rolle in Längsformat gedruckt werden, direkt in die anschliessende Faltmaschine eingegeben werden können. Bei Zeichnungen von der gleich breiten Rolle im Querformat - also von halber Grösse - ist es indessen notwendig, diese Zeichnungsblätter auf einem Zufuhr- und Wendetisch um 90° in der Blattebene zu wenden, damit der Faltvorgang im erwähnten Sinne richtig durchgeführt werden kann. Das Gleiche gilt für eine oder mehrere weitere Papierrollen geringerer Breite.Electrostatic printers are known for producing large-format drawings. Printing takes place from paper rolls, whereby two or more paper rolls of different widths can be present. The drawings are printed either lengthways or transversely to the longitudinal direction of the web. Such large-format drawings can be folded immediately after printing by folding machines known per se. The folding process must take place in such a way that after folding the head or the parts list always lies on the top sheet, i.e. the cover sheet. The folding machine can be programmed so that a different number of folds can be carried out depending on the sheet length. However, in order to meet the requirement that the header or the parts list is always on the cover sheet after the folding process, it is necessary to ensure that the drawings that leave the printer - for a given paper roll width - regardless of whether they are longitudinal - Or transverse position are printed on the paper tape, the folding machine are always fed so that the head or the parts list in the flat state has a matching predetermined position. This means that, for example, drawings that are printed in longitudinal format from a first, wide roll can be entered directly into the subsequent folding machine. In the case of drawings of the same width in landscape format - that is, half the size - it is necessary, however, to turn these drawing sheets by 90 ° in the sheet plane on a feed and turning table so that the folding process can be carried out correctly in the sense mentioned. The same applies to one or more additional paper rolls of smaller width.

Aus der CH-PS 650 221 ist eine Vorrichtung zum Transport von Rechteckbogen bekannt, die von einem Kopiergerät od.dgl. ausgegeben und um 90° gewendet werden, damit sie lagerichtig einer nachgeordneten Bearbeitungsvorrichtung zugeführt werden können. Der Wendevorgang erfolgt in der Weise, dass entlang des Transportweges ein stationäres nadelartiges Halteorgan aussermittig in den Blattbogen zeitabhängig eingesteckt wird und die seitlich dieses Halteorganes befindlichen geradlinigen bewegten Transportorgane eine Schwenkbewegung des Blattbogens um 90° bewirken. Nachteilig ist der langsame Transport und der grosse Platzbedarf des Zufuhrtisches in Längs- und Querrichtung samt Quertransportorganen für die Blattbogen.From CH-PS 650 221 a device for transporting rectangular sheets is known, or the like from a copier. are output and turned through 90 ° so that they can be fed to a downstream processing device in the correct position. The turning process takes place in such a way that a stationary needle-like holding member is eccentrically inserted into the sheet arch along the transport path and the linear moving transport members located to the side of this holding member cause a pivoting movement of the sheet arch by 90 °. Disadvantages are the slow transport and the large space requirement of the feed table in the longitudinal and transverse directions, including transverse transport elements for the sheet sheets.

Mit der Erfindung soll die Aufgabe gelöst werden, die von einem Printer od. dgl. laufend ausgegebenen grossformatigen Blattbogen, die wahllos im Längs- und Querformat anfallen, unter Vermeidung von Handarbeit formatabhängig einer Faltmaschine lagegerecht zuzuführen bei geringem Platzbedarf des Zufuhrtisches zwischen Drucker und Faltmaschine.With the invention, the object is to be achieved by a printer or the like. Continuously output large-format sheets, which are incurred indiscriminately in the longitudinal and landscape format, with the avoidance of manual work, depending on the format, to feed a folding machine in the correct position with a small footprint of the feed table between the printer and the folding machine.

Diese Aufgabe wird durch die im Kennzeichen der Ansprüche 1 und 3 genannten Merkmale gelöst.This object is achieved by the features mentioned in the characterizing part of claims 1 and 3.

Dadurch gelingt es, die von einem Drucker od. dgl. ausgegebenen Zeichnungsblätter, die wahllos als Längs- oder Querformat anfallen, durch eine nachgeordnete Faltmaschine unter Vermeidung von Handarbeit automatisch lagerichtig mit Deckblatt oben zu falten. Durch die Drehbewegung bei vorbestimmten Blattgrössen ist eine sehr kompakte Bauweise möglich, wobei der Zufuhr- und Wendetisch zwischen Drucker und Faltmaschine nur einen geringen Platz beansprucht.This makes it possible to automatically fold the drawing sheets issued by a printer or the like, which are incurred indiscriminately in longitudinal or landscape format, using a subordinate folding machine, avoiding manual labor, with the cover sheet on top. The rotary movement with predetermined sheet sizes enables a very compact design, the feed and turning table between printer and folding machine taking up only a small amount of space.

Da der Abtransport des gewendeten Blattbogens mit erhöhter Geschwindigkeit erfolgt, können dem Zufuhrtisch kontinuierlich Blattbogen zugeführt werden, ohne dass der Drehvorgang bei vorbestimmten Blattbogen-Formaten gestört wird. Die in wahlloser Folge zugeführten unterschiedlichen Blattformate werden auf dem Zufuhrtisch erkannt und nur diejenigen ausgewählt, welche eine 90° Drehung benötigen, um lagegerecht der Faltmaschine zugeführt zu werden. Unter lagegerecht wird verstanden, dass nach dem Faltvorgang der Kopf oder die Stückliste stets lesegerecht auf dem Deckblatt, vorzugsweise an dessen Fuss, zu liegen kommt.Since the sheet sheet that has been turned is transported away at an increased speed, sheet sheets can be fed continuously to the feed table without the turning process being disrupted in the case of predetermined sheet sheet formats. The different sheet formats fed in random order are recognized on the feed table and only those are selected which require a 90 ° rotation in order to be fed to the folding machine in the correct position. Under fit is understood that after the folding process the head or the parts list always lies on the cover sheet, preferably at the foot, in a readable position.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt und wird nachfolgend näher beschrieben. Es zeigen:

Fig. 1
die Lage unterschiedlicher Papierformate auf einem Zufuhrtisch
Fig. 2
eine schematische Gesamtansicht von Drucker, Zufuhrtisch und Faltmaschine
Fig. 3
eine Draufsicht auf den Zufuhrtisch in Richtung des Pfeiles III in Fig. 1, bei entfernten länglichen Halteschienen
Fig. 4
einen Vertikalschnitt durch das Hub-Drehorgan
Fig. 5
ein elektrisches Schaltschema
In the drawing, an embodiment of the invention is shown and will be described in more detail below. Show it:
Fig. 1
the location of different paper sizes on a feed table
Fig. 2
a schematic overall view of the printer, feed table and folding machine
Fig. 3
a plan view of the feed table in the direction of arrow III in Fig. 1, with elongated support rails removed
Fig. 4
a vertical section through the lifting rotary member
Fig. 5
an electrical circuit diagram

Es sind Drucker und Kopierer auf dem Markt zur Herstellung grossflächiger Zeichnungen ab Rolle. Unter "Drucker" sollen insbesondere elektrostatische Printer und andere auch fotografische Herstellungsverfahren verstanden werden. Dabei kann der Drucker od. dgl. ab zwei oder mehreren Papier-Vorratsrollen unterschiedlicher Breite arbeiten. Die ausgedruckten Zeichnungen normierter rechteckiger Grösse gelangen fortlaufend auf einen Zufuhrtisch 2, an den sich eine Faltmaschine 9 anschliesst. Diese Blattbogen 3, beispielsweise in Form grossflächiger Maschinen- oder Bauzeichnungen, sind je mit einem Beschriftungskopf 11, 12 oder einer Stückliste versehen, welche sich nach dem Falten oben auf dem Deckblatt befinden sollen. Da das Faltprogramm der Faltmaschine gegeben ist, setzt dies voraus, dass die Zeichnungen mit ihrem Beschriftungskopf 11, 12 oder Stückliste in einer vorbestimmten Lage in die Faltmaschine einzuführen sind. Da die ausgedruckten Zeichnungen wahlweise Längs- oder Querformat haben können, ist beim einen Format eine Verdrehung von 90° auf dem Zufuhrtisch durchzuführen.There are printers and copiers on the market for the production of large-scale drawings from a roll. “Printers” are to be understood in particular to mean electrostatic printers and other photographic production processes. The printer or the like can work from two or more paper supply rolls of different widths. The printed drawings of standardized rectangular size continuously arrive on a feed table 2, to which a folding machine 9 is connected. These sheets 3, for example in the form of large-area machine or construction drawings, are each provided with an inscription head 11, 12 or a parts list, which should be on the top of the cover sheet after folding. Since the folding program of the folding machine is given, this presupposes that the drawings with their labeling head 11, 12 or parts list are to be inserted into the folding machine in a predetermined position. Since the printed drawings can be in either longitudinal or landscape format, one format must be rotated by 90 ° on the feed table.

In Fig. 1 ist als Beispiel die Ausgabe einer Zeichnung im Normformat A1 (592 x 841 mm) entsprechend der Papierrollenbreite dargestellt, bei welchem sich die sich in Längsrichtung erstreckende Stückliste 11 am linken oberen Rand befindet. Bei gleicher Blattbreite kann der Drucker auch eine Zeichnung im Normformat A2 (420 x 594 mm) ausgeben, bei dem die Stückliste 12 quer zum unteren Blattrand zu liegen kommt. Das Format A2 entspricht somit flächenmässig der Hälfte des Formates A1. Gegenüber der Lage der Stückliste 11 des Formates A1 ist die Lage der Stückliste 12 unterschiedlich, wie dies aus Fig. 1 in vollen Linien dargestellt ist. Ausser diesen beiden Blattgrössen kann der Drucker od. dgl. Blätter von einer zweiten, schmäleren Vorratsrolle, beispielsweise A3 (297 x 420 mm) ausgeben, wobei das Format A4 ebenfalls gewendet werden muss. Aus Gründen der besseren Uebersicht wurden diese Blatt-Normgrössen A3 und A4 in Fig. 1 nicht eingezeichnet; das Wendeprinzip ist indessen das gleiche.In Fig. 1, the output of a drawing in standard format A1 (592 x 841 mm) corresponding to the paper roll width is shown as an example, in which the longitudinally extending parts list 11 is located on the upper left edge. With the same sheet width, the printer can also output a drawing in standard format A2 (420 x 594 mm), in which the parts list 12 comes to lie transversely to the lower edge of the sheet. The A2 format corresponds to half of the A1 format. The position of the parts list 12 differs from the position of the parts list 11 of the format A1, as is shown in full lines in FIG. 1. In addition to these two sheet sizes, the printer or the like can output sheets from a second, narrower supply roll, for example A3 (297 x 420 mm), the A4 format also having to be turned over. For reasons of a better overview, these sheet standard sizes A3 and A4 were not shown in FIG. 1; however, the turning principle is the same.

Die vom Drucker 1 od. dgl. ausgegebenen und auf den Zufuhrtisch 2 gelangenden Blattbogen 3 werden durch Sensoren 5-8 zur Feststellung ihres Formates abgetastet. Im hier beschriebenen Beispiel muss nur das Blattformat A2, nicht aber das Blattformat A1 in der Tischebene um 90° verdreht werden. Die Abtastung erfolgt durch drei in Blattzufuhrrichtung Z im Tischmittelbereich hintereinander angeordnete Sensoren 5,6,7, denen seitlich noch ein vierter Sensor 8 zugeordnet ist. Ferner ist ein dem Blatteinlauf zugeordneter Start-Sensor 4 für die Blattantriebsorgane vorhanden. Wenn ein Blattformat A1 in Richtung des Pfeiles Z1 auf den Zufuhrtisch 2 transportiert wird, werden nacheinander alle vier Sensoren 4-8 aktiviert und eine den Sensoren zugeordnete elektrische Format-Auswahlschaltung 15 erkennt diese Blattgrösse A1. Dieses im Drucker 1 von der Papiervorratsrolle abgetrennte Blattformat A1 gelangt vom Zufuhrtisch 2 - ohne dass es gewendet wird - mit gleicher Transportrichtung direkt in die Faltmaschine 9, d.h. die Blatteinlaufrichtung Z1 und die Blattauslaufrichtung Z2 stimmen überein.The sheet sheets 3 output by the printer 1 or the like and reaching the feed table 2 are scanned by sensors 5-8 to determine their format. In the example described here, only the A2 sheet format, but not the A1 sheet format, must be rotated by 90 ° in the table plane. The scanning is carried out by three sensors 5, 6, 7, which are arranged one behind the other in the sheet feed direction Z in the table center area and to which a fourth sensor 8 is laterally assigned. There is also a start sensor 4 assigned to the sheet inlet for the sheet drive elements. When a sheet format A1 is transported in the direction of arrow Z1 onto the feed table 2, all four sensors 4-8 are activated in succession and an electrical format selection circuit 15 assigned to the sensors recognizes this sheet size A1. This in printer 1 from the paper supply roll Separated sheet format A1 passes from the feed table 2 - without being turned - directly into the folding machine 9 with the same transport direction, ie the sheet entry direction Z1 and the sheet exit direction Z2 match.

Bei der Zufuhr eines Blattformates A2 mit quer liegender Beschriftung dagegen erkennt die Auswahlschaltung dieses Blattformat A2. Sobald der Sensor 7 den Blattbogen A2 bedeckt und gleichzeitig den Sensor 5 freigibt, wird eine Drehbewegung dieses Blattbogens 3 eingeleitet. Die Drehbewegung erfolgt gemäss Pfeil U um einen Winkel von 90° um das Blattzentrum P im Uhrzeigersinn. Die Sensoren 4-8 sind vorzugsweise Lichtschranken; es könnten indessen auch Mikroschalter od. dgl. verwendet werden. Die Sensoren sind vorzugsweise Reflexions-Lichtsensoren, die im Zufuhrtisch bündig zur Tischoberfläche eingelassen sind. Es ist auch möglich die Transportorgane 10 während der Drehbewegung kurzzeitig stillzusetzen.In contrast, when a sheet size A2 with transverse lettering is fed, the selection circuit recognizes this sheet size A2. As soon as the sensor 7 covers the sheet sheet A2 and at the same time releases the sensor 5, a rotary movement of this sheet sheet 3 is initiated. The rotary movement is clockwise according to arrow U through an angle of 90 ° around the center of the blade P. The sensors 4-8 are preferably light barriers; however, microswitches or the like could also be used. The sensors are preferably reflection light sensors which are embedded in the feed table flush with the table surface. It is also possible to temporarily stop the transport members 10 during the rotary movement.

Aus Fig. 3 geht die Ausbildung des Zufuhrtisches 2 hervor. Die Tischfläche wird von unten her von mehreren Transportrollen 10,17 durchdrungen, die von zwei Antriebsmotoren 13,19 über Zahnriemen 14 angetrieben sind und von der elektrischen Steuerung 33 gesteuert werden. Oberhalb dieser Transportrollen 10 befinden sich in vier am Querträger 24 befestigten Halteschienen in loser Abstützung Metallkugeln 16, die durch ihr Eigengewicht ein dazwischen liegendes Blatt gegen die Transportrollen 10 andrücken und dadurch den Blatt-Vorschub bewirken. Die in Fig. 3 rechts befindlichen Transportrollen 17 werden mit grösserer Drehzahl angetrieben, als die einlaufseitigen Transportrollen 10, damit die Blattbogen 3 mit höherer Geschwindigkeit in Richtung gegen die Faltmaschine 9 transportiert werden. Die Faltmaschine 9 arbeitet mit einer höheren Geschwindigkeit als der Ausgabegeschwindigkeit des Druckers 1 entspricht. Die Transportrollen 10 sind je mit einem konventionellen Ueberholfreilauf versehen, welcher bewirkt, dass ein von den schneller laufenden Transportrollen 17 erfasstes Blatt durch die langsamer angetriebenen Transportrollen 10 nicht gehemmt wird. Die unterschiedlichen Drehzahlen der Transportrollen 10 und 17 könnten auch durch einen einzigen Motor 13 mittels unterschiedlichen Uebersetzungsverhältnissen statt durch zwei verschiedene Antriebsmotoren 13,19 erreicht werden, wobei dies durch ein Uebersetzungsgetriebe 27 mit Kupplung erfolgt. Ferner kann an Stelle des Motors 19 die Antriebsbewegung direkt von Antriebsorganen 37 (Fig. 2) des Druckers 1 abgenommen werden.3 shows the design of the feed table 2. The table surface is penetrated from below by a plurality of transport rollers 10, 17, which are driven by two drive motors 13, 19 via toothed belts 14 and are controlled by the electrical control 33. Above these transport rollers 10 are in four support rails attached to the cross member 24 in loose support metal balls 16 which, by their own weight, press an intermediate sheet against the transport rollers 10 and thereby bring about the sheet feed. The transport rollers 17 located on the right in FIG. 3 are driven at a higher speed than the inlet-side transport rollers 10, so that the sheet sheets 3 are transported towards the folding machine 9 at a higher speed. The folding machine 9 operates at a higher speed than the output speed of the printer 1 corresponds. The transport rollers 10 are each provided with a conventional overrunning freewheel, which has the effect that a sheet caught by the faster-running transport rollers 17 is not inhibited by the slower-driven transport rollers 10. The different speeds of the transport rollers 10 and 17 could also be achieved by a single motor 13 by means of different transmission ratios instead of by two different drive motors 13, 19, this being done by a transmission gear 27 with clutch. Furthermore, instead of the motor 19, the drive movement can be taken directly from drive elements 37 (FIG. 2) of the printer 1.

Ein Hub-Drehorgan 18 gemäss Fig. 4 ist bestimmt zur Durchführung einer Drehbewegung des Blattbogens 3 im Format A2 um 90°. Es enthält einen bündig zur Tischoberfläche angeordneten Drehteller 20, oberhalb dem sich mit Abstand ein drehbar gelagerter Gegendruckteller 22 befindet. Der Gegendruckteller 22 ist an einem sich quer über den Zufuhrtisch 2 erstreckenden Joch 24 befestigt, an dem auch vier Halter 21 hängen. Die Hubbewegung des Drehtellers 20 erfolgt durch einen Elektromagnet 26 in Solenoid-Bauart, dessen zentraler, vertikaler Stössel 28 mit einer drehbaren Welle 30 über ein Wälzlagergehäuse 32 in Verbindung steht. Der Elektromagnet 26 ist über ein U-förmiges Halteblech 34 und einen Lagerkörper 36 mit dem Zufuhrtisch 2 starr verbunden. Die Welle 30 ist unten in einem Kugellager 38 und oben in einem Gleitlager 40 drehbar und achsial beweglich abgestützt. Ein drehfest mit dem Drehteller 20 verbundener Querbolzen 42 durchdringt einen Längsschlitz 44 der Welle 30. Diese Nabe 46 ist starr mit einem Antriebsrad 48 verbunden. Ein Zahnriemen 50 ist um dieses Antriebsrad 48 und um ein Ritzel 49 eines Schrittmotores 54 geschlungen. Der Schrittmotor 54 ist mit dem Lagerkörper 36 starr verbunden. Die elektrische Steuerung dieses Schrittmotores 54 erfolgt über eine Ansteuerschaltung 25. Somit kann die Achse 30 und der mit dieser starr verbundene Drehteller 20 sowohl eine Achsialbewegung als auch eine Drehbewegung ausführen. Eine Feder 23 bewirkt einen Rückzug der Welle 30 in die Ruhelage.4 is designed to carry out a rotary movement of the sheet sheet 3 in the A2 format by 90 °. It contains a turntable 20 arranged flush with the table surface, above which there is a rotatably mounted counter pressure plate 22 at a distance. The counter-pressure plate 22 is fastened to a yoke 24 which extends across the feed table 2 and on which four holders 21 also hang. The lifting movement of the turntable 20 is carried out by a solenoid-type electromagnet 26, the central, vertical plunger 28 of which is connected to a rotatable shaft 30 via a roller bearing housing 32. The electromagnet 26 is rigidly connected to the feed table 2 via a U-shaped holding plate 34 and a bearing body 36. The shaft 30 is rotatably supported in a ball bearing 38 at the bottom and in a slide bearing 40 at the top and is axially movable. A cross bolt 42, which is non-rotatably connected to the turntable 20, penetrates a longitudinal slot 44 of the shaft 30. This hub 46 is rigidly connected to a drive wheel 48. A toothed belt 50 is around this drive wheel 48 and wrapped around a pinion 49 of a stepper motor 54. The stepper motor 54 is rigidly connected to the bearing body 36. The electrical control of this stepper motor 54 takes place via a control circuit 25. Thus, the axis 30 and the turntable 20 rigidly connected to it can execute both an axial movement and a rotary movement. A spring 23 causes the shaft 30 to retract into the rest position.

Der Zufuhrtisch 2 drückt gegen einen Anschlag 57 und ist um eine horizontale Schwenkachse 56 hochschwenkbar. Dadurch lässt sich der ganze Zufuhrtisch 2 zur Schaffung einer guten Zugänglichkeit zwischen Drucker 1 und Faltmaschine 9 gemäss Pfeil 55 nach oben verschwenken.The feed table 2 presses against a stop 57 and can be pivoted up about a horizontal pivot axis 56. As a result, the entire feed table 2 can be pivoted upwards in accordance with arrow 55 in order to provide good accessibility between the printer 1 and the folding machine 9.

Die Wirkungsweise ist folgende:The mode of action is as follows:

Wenn dem Zufuhrtisch 2 von einem Drucker 1 od. dgl. mit einer ersten Geschwindigkeit, nämlich der Drucker-Ausgabegeschwindigkeit, ein Blattbogen 3 zugeführt wird, lässt sich durch die Sensoren 5-8 durch Auswertung der überdeckten und freien Sensoren dessen Format feststellen. Es sei angenommen, dass ein Blattbogen 3 mit dem Format A2 um 90° gewendet werden soll, um in der richtigen Lage in die an den Zufuhrtisch 2 direkt anschliessende Faltmaschine 9 eingeführt zu werden. Eine Ausführungsform einer geeigneten Faltmaschine geht aus dem USA-Patent Nr. 5 045 039 hervor. Sobald die Lichtschranke 7 vom zugeführten Blattbogen A2 bedeckt und gleichzeitig die Lichtschranke 5 freigegeben wird, bewirkt die Formatauswahlschaltung 15, dass das elektrische Steuerglied 29 des Hub-Drehaggregates 18 aktiviert wird, sodass der Blattbogen in seiner Mittelpartie angehoben und zwischen dem Drehteller 20 und dem Gegendruckteller 22 festgeklemmt wird. Nach kurzer Zeitverzögerung - bewirkt durch das Zeitglied 31 - läuft der Schnittmotor 54 an und bewirkt eine Verdrehung um 90° in einer Ebene parallel zur Tischebene.When a sheet 3 is fed to the feed table 2 from a printer 1 or the like at a first speed, namely the printer output speed, its format can be determined by the sensors 5-8 by evaluating the covered and free sensors. It is assumed that a sheet of sheet 3 with the format A2 is to be turned through 90 ° in order to be inserted in the correct position into the folding machine 9 which directly adjoins the feed table 2. One embodiment of a suitable folding machine is shown in U.S. Patent No. 5,045,039. As soon as the light barrier 7 is covered by the sheet A2 supplied and at the same time the light barrier 5 is released, the format selection circuit 15 causes the electrical control element 29 of the lifting and rotating assembly 18 to be activated, so that the sheet is raised in its middle section and between the turntable 20 and the counter-pressure plate 22 is clamped. After a short delay - effected by the timer 31 - the cutting motor 54 starts and causes a rotation of 90 ° in a plane parallel to the table level.

Nach vollzogener Drehbewegung des Blattbogens 2 verursacht das Steuerglied 29, dass der Drehteller 20 wieder abgesenkt wird, worauf der Blattbogen 2 von den Förderrollen 17 erfasst wird. Diese werden vom Motor 13 mit einer gegenüber der Einlaufgeschwindigkeit etwa dreimal höheren, zweiten Geschwindigkeit angetrieben, welche vorzugsweise mit der Arbeitsgeschwindigkeit der Faltmaschine 9 übereinstimmt. Die Antriebsrollen 17 könnten statt durch einen Motor 13 durch Antriebsorgane der Faltmaschine angetrieben werden. Der Motor 13 wird durch ein Steuerglied 33 gesteuert. Durch diese erhöhte Abzugsgeschwindigkeit werden Störungen mit kontinuierlich neu zulaufenden Blattbogen 3 vermieden. Der Drehteller 20 braucht nicht zurückgedreht zu werden, da der Schrittmotor 54 durch die Schrittmotorsteuerung 25 bei der nächsten Hubbewegung wieder eine vorbestimmte Drehbewegung ausführt.After the rotary movement of the sheet 2 has been completed, the control member 29 causes the turntable 20 to be lowered again, whereupon the sheet 2 is gripped by the conveyor rollers 17. These are driven by the motor 13 at a second speed which is about three times higher than the running-in speed and which preferably corresponds to the working speed of the folding machine 9. The drive rollers 17 could be driven by drive members of the folding machine instead of a motor 13. The motor 13 is controlled by a control member 33. This increased take-off speed prevents faults with continuously new sheet sheets 3. The turntable 20 does not need to be turned back, since the stepper motor 54 again executes a predetermined rotary movement by the stepper motor controller 25 during the next stroke movement.

Eine Ausführungsvariante besteht darin, dass auch abnormal lange Formate direkt der Faltmaschine 9 zugeführt werden können, z.B. lange elektrische Schaltpläne. Die Steuereinrichtung wird in der Weise modifiziert, dass bei einem Ueberdecken aller Sensoren 4-7 der Elektromotor 13 und die Faltmaschine 9 in der Blatt-Transportgeschwindigkeit abgesenkt und auf die Transportgeschwindigkeit des Druckers 1 umgestellt werden. Dadurch wird verhindert, dass das den Drucker noch nicht verlassene Blatt in die mit höherer Faltgeschwindigkeit arbeitende Faltmaschine eingezogen wird. Sobald die hintere Blattkante den Sensor 4 oder allenfalls einen noch weiter druckerseitig liegenden Sensor freigegeben hat, kann die Blatt-Transport- und Faltmaschinengeschwindigkeit wieder erhöht werden.One embodiment variant is that even abnormally long formats can be fed directly to the folding machine 9, e.g. long electrical schematics. The control device is modified in such a way that when all sensors 4-7 are covered, the electric motor 13 and the folding machine 9 are lowered in the sheet transport speed and converted to the transport speed of the printer 1. This prevents the sheet that has not yet left the printer from being drawn into the folding machine which operates at a higher folding speed. As soon as the rear sheet edge has released the sensor 4 or, if need be, an even further sensor on the printer side, the sheet transport and folding machine speed can be increased again.

Claims (10)

Verfahren zur Zufuhr von Blattbogen unterschiedlicher Rechteckformate, die von einem Drucker (9) oder Kopierer mit einer ersten Geschwindigkeit auf einen Zufuhrtisch (2) ausgegeben und hernach einer Weiterbearbeitungsmaschine (9) zugeführt werden, wobei Sensor-Mittel (5-8) zur Feststellung des Blattformates vorhanden sind und selektiv mindestens ein vorbestimmtes Blattformat um 90° relativ zur Tischebene verdreht wird, dadurch gekennzeichnet, dass der jeweils ausgewählte, zu wendende Blattbogen (3) in seinem Mittelbereich über die Ebene des Zufuhrtisches (2) angehoben und in diesem Zustand um 90° verdreht wird und der Blattbogen (3) nach dem Absenken mit einer gegenüber der ersten Geschwindigkeit höheren Geschwindigkeit abtransportiert wird.Method for feeding sheet sheets of different rectangular formats, which are output by a printer (9) or copier at a first speed onto a feed table (2) and then fed to a further processing machine (9), sensor means (5-8) for determining the Sheet formats are available and at least one predetermined sheet format is selectively rotated by 90 ° relative to the table level, characterized in that the respectively selected sheet sheet (3) to be turned is raised in its central region above the level of the feed table (2) and in this state by 90 ° is rotated and the sheet (3) is transported away after lowering at a higher speed than the first speed. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass bei Feststellung eines zu wendenden Blattformates ein Hub-Drehaggregat zur Verschwenkung des Blattbogens aktiviert wird und nach dem Absenken des Blattbogens dieser in der zur Blatteinlaufrichtung (Z1) gleichgerichteten Abzugs-Richtung (Z2) abtransportiert wird.Method according to Claim 1, characterized in that when a sheet format to be turned is ascertained, a lifting and rotating unit is activated for pivoting the sheet sheet and, after the sheet sheet has been lowered, it is transported away in the withdrawal direction (Z2) which is the same as the sheet entry direction (Z1). Vorrichtung, insbesondere zur Durchführung des Verfahrens nach den Ansprüchen 1 oder 2, mit einem Zufuhrtisch, dadurch gekennzeichnet, dass der Zufuhrtisch (2) zwischen einem Drucker (1) oder Kopierer und einer Faltmaschine (9) angeordnet ist, mit dem Zufuhrtisch (2) ein Hub-Drehorgan (18) zum Erfassen des Blattbogens (3) zusammenwirkt und der Zufuhrtisch (2) Transportorgane (17) aufweist, mit denen der gewendete Blattbogen (3) mit einer gegenüber der Blatt-Einlaufgeschwindigkeit (Z1) höheren Blatt-Abzugs-Geschwindigkeit (Z2) abtransportierbar ist.Device, in particular for carrying out the method according to claims 1 or 2, with a feed table, characterized in that the feed table (2) is arranged between a printer (1) or copier and a folding machine (9) with the feed table (2) a lifting / rotating member (18) cooperates for gripping the sheet sheet (3) and the feed table (2) has transport members (17) with which the turned sheet sheet (3) has a higher sheet take-off speed than the sheet infeed speed (Z1) Speed (Z2) can be removed. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das Hub-Drehorgan (18) zusammen mit einem Elektromagnet (26) und einem Schrittmotor (54) eine Baueinheit bildet.Apparatus according to claim 3, characterized in that the lifting and rotating member (18) forms a structural unit together with an electromagnet (26) and a stepping motor (54). Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass oberhalb des Hub-Drehorganes (18) ein drehbarer Gegendruckteller (22) an einem Querträger (24) vorhanden ist.Apparatus according to claim 3 or 4, characterized in that a rotatable counter-pressure plate (22) is provided on a cross member (24) above the lifting rotary member (18). Vorrichtung nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass sich zwischen einem Drehteller (20) und einem ortsfesten Elektromagnet (26) ein Drehlager (32) befindet, in einer mit dem Drehteller (20) verbundenen Achse (30) eine Längsnut (44) vorhanden ist, die von einem Querstift (42) durchdrungen ist, welcher in einer Antriebsrad-Nabe (46,48) sitzt, die mit einem Schrittmotor (54) in Antriebs-Verbindung steht.Device according to one of claims 3 to 5, characterized in that between a turntable (20) and a stationary electromagnet (26) there is a rotary bearing (32), in a shaft (30) connected to the turntable (20) has a longitudinal groove (30) 44) is present, which is penetrated by a cross pin (42) which is seated in a drive wheel hub (46, 48) which is in drive connection with a stepper motor (54). Vorrichtung nach einem der Ansprüche 1-6, dadurch gekennzeichnet, dass der Zufuhrtisch (2) um eine Horizontalachse (56) schwenkbar ausgebildet ist.Device according to one of claims 1-6, characterized in that the feed table (2) is designed to be pivotable about a horizontal axis (56). Vorrichtung nach einem der Ansprüche 3-7, dadurch gekennzeichnet, dass im Zufuhrtisch (2) mehrere mit einer elektrischen Auswertschaltung (15) zusammenwirkende Sensoren (4-8) vorhanden sind, zur Auswahl der zu drehenden Blattformate.Device according to one of claims 3-7, characterized in that several sensors (4-8) cooperating with an electrical evaluation circuit (15) are present in the feed table (2) for the selection of the sheet formats to be rotated. Vorrichtung nach einem der Ansprüche 3-8, dadurch gekennzeichnet, dass erste eingangsseitige Blatt-Antriebsrollen (10) des Zufuhrtisches (2) von einem ersten Motor (19) oder vom Drucker (1) mit einer ersten Geschwindigkeit antreibbar sind und zweite ausgangsseitige Blatt-Antriebsrollen (17) von einem anderen Motor (13) oder von der Faltmaschine (9) antreibbar sind.Device according to one of claims 3-8, characterized in that first input-side sheet drive rollers (10) of the feed table (2) by a first motor (19) or by the printer (1) at a first speed can be driven and second output-side sheet drive rollers (17) can be driven by another motor (13) or by the folding machine (9). Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass sensorgesteuerte Schaltmittel vorhanden sind, mit denen die Blatt-Abzugsgeschwindigkeit an die Blatt-Einlaufgeschwindigkeit anpassbar ist.Apparatus according to claim 3, characterized in that there are sensor-controlled switching means with which the sheet removal speed can be adapted to the sheet infeed speed.
EP93810601A 1992-09-08 1993-08-24 Method and device for feeding correctly orientated sheets to a folding machine Expired - Lifetime EP0587531B1 (en)

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CH281092 1992-09-08

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EP1302326A2 (en) 2001-10-11 2003-04-16 Christian Dr. Bay Installation for conveying paper between a plotter and a folding device
EP2088104A1 (en) * 2008-02-08 2009-08-12 Müller Martini Holding AG Device for redirecting individual printed items
WO2010042779A2 (en) * 2008-10-10 2010-04-15 Lasermax Roll Systems, Inc. System and method for rotating sheets
WO2010042779A3 (en) * 2008-10-10 2010-07-29 Lasermax Roll Systems, Inc. System and method for rotating sheets
US8061709B2 (en) 2008-10-10 2011-11-22 Lasermax Roll Systems, Inc. System and method for rotating sheets
US8430400B2 (en) 2008-10-10 2013-04-30 Lasermax Roll Systems, Inc. System and method for rotating sheets
US8167293B2 (en) 2009-08-25 2012-05-01 Lasermax Roll Systems, Inc. System and method for inline cutting and stacking of sheets for formation of books
US8485512B2 (en) 2009-08-25 2013-07-16 Lasermax Roll Systems, Inc. System and method for inline cutting and stacking of sheets for formation of books
US8882099B2 (en) 2009-08-25 2014-11-11 Lasermax Roll Systems, Inc. System and method for inline cutting and stacking of sheets for formation of books
RU2467450C2 (en) * 2010-04-23 2012-11-20 Виктор Алексеевич Барский Method to supply to individual loads and method to supply power to electric drive using ac electric circuit

Also Published As

Publication number Publication date
US5320340A (en) 1994-06-14
EP0587531B1 (en) 1995-05-31
DE59300234D1 (en) 1995-07-06
EP0587531A3 (en) 1994-06-29

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