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EP0644139A1 - Sheet feeder unit - Google Patents

Sheet feeder unit Download PDF

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Publication number
EP0644139A1
EP0644139A1 EP94112476A EP94112476A EP0644139A1 EP 0644139 A1 EP0644139 A1 EP 0644139A1 EP 94112476 A EP94112476 A EP 94112476A EP 94112476 A EP94112476 A EP 94112476A EP 0644139 A1 EP0644139 A1 EP 0644139A1
Authority
EP
European Patent Office
Prior art keywords
sheet
belt table
suction head
unit according
sheet feeder
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.)
Granted
Application number
EP94112476A
Other languages
German (de)
French (fr)
Other versions
EP0644139B1 (en
Inventor
Karl-Heinz Schickedanz
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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Filing date
Publication date
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Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0644139A1 publication Critical patent/EP0644139A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/0808—Suction grippers
    • B65H3/0816—Suction grippers separating from the top of pile
    • 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
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B65H2511/514—Particular portion of element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • B65H2513/51—Sequence of process

Definitions

  • the invention relates to a sheet feeder unit with a suction head unit, through which sheets can be removed from a stack of sheets and fed to a belt table, and can be fed from the belt table to a sheet processing machine, the suction head unit and belt table being drivable in time with the sheet processing machine.
  • the suction head unit and the belt table are driven in time with the sheet processing machine. This is to ensure that the sheets are always handed over to the sheet processing machine at exactly the right time.
  • the object of the invention is therefore to provide a sheet feeder unit of the type mentioned at the outset, by means of which the sheets are transferred safely to the sheet processing machine at the right time.
  • This object is achieved in that the actual time of reaching the transfer position to the sheet-processing machine can be detected by the foremost sheet on the belt table and compared with a target time, and the working cycle of the suction head unit corresponding to the deviation of the target time from the actual time is leading or lagging is correctable.
  • the deviations of the actual time from the target time can be corrected. The correction is carried out as quickly as possible without influencing the isochronous synchronism of the belt table and sheet processing machine, since the sheet is corrected at the beginning of the transport path. The sheets will be transferred to the conveyor table sooner or later accordingly.
  • the actual point in time of reaching the transfer position can be detected by a sensor, this advantageously taking place in that the sensor reaches the transfer position through the front edge the foremost arc is detectable.
  • a plurality of sensors distributed over the sheet width can be arranged. If the leading edge of the sheet is not exactly aligned, the mean switching time of the sensors can form the actual time.
  • the sheet are detected without contact and thus without impairing the position of the sheets.
  • the senor or sensors are light reflection sensors.
  • the suction head unit and belt table advantageously have separate drives.
  • the course of movement of the Belt table during a work cycle be approximately sinusoidal, the target time being the time of the lowest conveyor speed of the belt table.
  • the sheets can be transferred with high accuracy, which means that the sheets also reach the transfer position of the sheet processing machine with a high degree of accuracy in their position .
  • An automatic correction can be achieved in a simple manner in that the signals or the signals from the sensors and a clock signal from the conveyor table can be fed to processing electronics and from this the positive or negative deviation of the actual time from the target time can be determined, as well as a corresponding correction signal for the preliminary or lag of the work cycle can be fed to the drive of the suction head.
  • the drive of the suction head prefferably adjustable in advance or lag.
  • the sheet feeder unit shown in the figures has a stacking table 1 on which a sheet stack 2 is mounted.
  • the uppermost sheet 5 of the sheet stack 2 is lifted from the sheet stack 2 by suction cups 4 of a suction head unit 5, transferring suction cups 6 to the suction head unit 5 and fed by the latter in the conveying direction 7 to a transfer end of a belt table 8.
  • the conveyor table 8 has rotatably drivable rollers 9 in the conveying direction 7 at its take-over end and at its transfer end extending transversely to the conveying direction 7, around which a plurality of conveyor belts 10 are arranged side by side are performed, which can be designed as suction belts.
  • the belt table is followed by a sheet-processing machine 11, which in the present exemplary embodiment is a printing machine.
  • Both the suction head unit 5 and the belt table 8 and the sheet processing machine 11 have their own drives.
  • the suction head unit 5 has the drive 12, the belt table 8 the drive 13 and the sheet-processing machine 11 the drive 14.
  • a synchronization signal is fed to processing electronics 16 via a line 15 from the drive 14, which in turn ensures a synchronous operation of the belt table 13 and sheet-processing machine 11 via line 17 Signal to the drive 13 passes.
  • the belt table 8 is driven in such a way that the conveyor belts 10 are accelerated from a low conveying speed during a work cycle "A" and decelerated to the low conveying speed again at the end of the working cycle.
  • the course of movement is the Conveyor belts 10 of the belt table 8 are approximately sinusoidal.
  • Both the transfer of the sheets from the suction head unit 5 to the belt table 8 and the transfer of the sheets from the belt table 8 to the sheet processing machine 11 ideally take place at the time of the lowest conveying speed of the belt table 8.
  • the drive 12 of the suction head unit 5 is also controlled accordingly by the processing electronics 16 via a line 18.
  • an optical sensor 19 means that the transfer position to the sheet is reached Machine 11 detects and a corresponding signal is fed via a line 20 to the processing electronics 16.
  • the optical sensor 19 can be located in the area of the transfer position below the transport plane of the sheet and can trigger the signal when the transfer position is reached through the front edge of the sheet. If the actual time of reaching the transfer position to the sheet-processing machine 11 differs from the target time specified by the working cycle of the sheet-processing machine 11, then this is recognized by the processing electronics and the drive 12 of the suction head unit 5 is actuated accordingly in its working cycle in a leading or lagging manner.
  • the sheets are accordingly advanced from the suction head unit 5 to the conveyor table 8. The sheets then reach the transfer position to the sheet processing machine precisely to the cycle.
  • A denotes the working cycle of the suction head unit 5. If the control is used, the working cycle of the suction head unit is advanced 5 reached, this work cycle takes place during the period designated "A '"; in case of lag during the period marked "A ''".
  • the sheet-processing machine 11 and the belt table 8 have their own drives, the processing electronics 16 ensuring synchronous operation. It goes without saying that such synchronous operation can also be achieved if the drive of the sheet processing machine 11 also drives the conveyor table.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Branching, Merging, And Special Transfer Between Conveyors (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Advancing Webs (AREA)

Abstract

The invention relates to a sheet feeder unit having a suction head unit 5, by means of which sheets can be removed, individualised, from a sheet stack 2, can be fed to a belt table 8 and can be supplied by the belt table 8 to a sheet-processing machine 11. Suction head unit 5 and belt table 8 can be driven in time with the sheet-processing machine 11. The actual instant of reaching the transfer position to the sheet-processing machine 11 can be detected by means of the respective frontmost sheet located on the belt table 8 and can be compared with a desired instant. Furthermore, the operating cycle of the suction head unit 5 can be corrected, leading or lagging, in accordance with the deviation of the desired instant from the actual instant. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Bogenanlegereinheit mit einer Saugkopfeinheit, durch die Bogen vereinzelt einem Bogenstapel entnehmbar und einem Bändertisch zuführbar sowie von dem Bändertisch einer Bogen verarbeitenden Maschine zuförderbar sind, wobei Saugkopfeinheit und Bändertisch im Takt der Bogen verarbeitenden Maschine antreibbar sind.The invention relates to a sheet feeder unit with a suction head unit, through which sheets can be removed from a stack of sheets and fed to a belt table, and can be fed from the belt table to a sheet processing machine, the suction head unit and belt table being drivable in time with the sheet processing machine.

Bei derartigen bekannten Bogenanlegereinheiten erfolgt der Antrieb der Saugkopfeinheit und des Bändertischs im Takt der Bogen verarbeitenden Maschine. Damit soll sichergestellt werden, daß die Bogen immer exakt zum richtigen Zeitpunkt der Bogen verarbeitenden Maschine übergeben werden.In such known sheet feeder units, the suction head unit and the belt table are driven in time with the sheet processing machine. This is to ensure that the sheets are always handed over to the sheet processing machine at exactly the right time.

Abhängig von der Qualität der Bogen und deren Oberflächenbeschaffenheit kann es zu einem mehr- oder weniger großen Schlupf zwischen den Bogen und den sie transportierenden Transportbändern des Bändertischs kommen, so daß diese nicht zum richtigen Zeitpunkt der Bogen verarbeitenden Maschine übergeben werden. Der Istzeitpunkt der Bogenübergabe weicht also von dem Sollzeitpunkt ab.Depending on the quality of the sheets and their surface condition, there may be a greater or lesser amount of slippage between the sheets and the conveyor belts transporting them, so that these are not transferred to the sheet processing machine at the right time. The actual time of the sheet transfer thus deviates from the target time.

Aufgabe der Erfindung ist es daher eine Bogenanlegereinheit der eingangs genannten Art zu schaffen, durch die die Bogen sicher zum richtigen Zeitpunkt der Bogen verarbeitenden Maschine übergeben werden.The object of the invention is therefore to provide a sheet feeder unit of the type mentioned at the outset, by means of which the sheets are transferred safely to the sheet processing machine at the right time.

Diese Aufgabe wird erfindungsgemäß dadurch gelost, daß der Istzeitpunkt des Erreichens der Übergabeposition zur Bogen verarbeitenden Maschine durch den jeweils vordersten auf dem Bändertisch befindlichen Bogen erfaßbar und mit einem Sollzeitpunkt vergleichbar sowie der Arbeitstakt der Saugkopfeinheit entsprechend der Abweichung des Sollzeitpunkts vom Istzeitpunkt vor- bzw. nacheilend korrigierbar ist. Durch diese Ausbildung sind die Abweichungen des Istzeitpunkts vom Sollzeitpunkt korrigierbar. Dabei erfolgt die Korrektur auf schnellstmögliche Weise ohne die Taktsynchronität von Bändertisch und Bogen verarbeitender Maschine zu beeinflussen, da bereits zu Beginn des Transportwegs der Bogen der korrigierende Ausgleich erfolgt. Die Bogen werden dazu entsprechend früher oder später von der Saugkopfeinheit dem Bändertisch übergeben.This object is achieved in that the actual time of reaching the transfer position to the sheet-processing machine can be detected by the foremost sheet on the belt table and compared with a target time, and the working cycle of the suction head unit corresponding to the deviation of the target time from the actual time is leading or lagging is correctable. With this design, the deviations of the actual time from the target time can be corrected. The correction is carried out as quickly as possible without influencing the isochronous synchronism of the belt table and sheet processing machine, since the sheet is corrected at the beginning of the transport path. The sheets will be transferred to the conveyor table sooner or later accordingly.

Der Istzeitpunkt des Erreichens der Übergabeposition ist durch einen Sensor erfaßbar, wobei dies vorteilhafterweise dadurch erfolgt, daß durch den Sensor das Erreichen der Übergabeposition durch die Vorderkante des vordersten Bogens erfaßbar ist.The actual point in time of reaching the transfer position can be detected by a sensor, this advantageously taking place in that the sensor reaches the transfer position through the front edge the foremost arc is detectable.

Um auch bei großformatigen Bogen deren Erreichen der Übergabeposition exakt erfassen zu können, können mehrere, über die Bogenbreite verteilte Sensoren angeordnet sein. Dabei kann bei nicht exakt ausgerichteter Vorderkante des Bogens der mittlere Schaltzeitpunkt der Sensoren den Istzeitpunkt bilden.In order to be able to precisely detect the reaching of the transfer position even in the case of large-format sheets, a plurality of sensors distributed over the sheet width can be arranged. If the leading edge of the sheet is not exactly aligned, the mean switching time of the sensors can form the actual time.

Sind der bzw. die Sensoren optische Sensoren, so erfolgt eine Erfassung der Bogen berührungslos und somit ohne Beeinträchtigung der Lage der Bogen.If the sensor or sensors are optical sensors, the sheets are detected without contact and thus without impairing the position of the sheets.

Besonders einfach im Aufbau und bauraumsparend ist es, wenn der bzw. die Sensoren Lichtreflektionssensoren sind.It is particularly simple in construction and space-saving if the sensor or sensors are light reflection sensors.

Zur unabhängigen Korrektur des Arbeitstakts der Saugkopfeinheit besitzen vorteilhafterweise Saugkopfeinheit und Bändertisch voneinander separate Antriebe.For independent correction of the work cycle of the suction head unit, the suction head unit and belt table advantageously have separate drives.

Um durch Anstoßen des Bogens mit hoher Geschwindigkeit an den die Übergabeposition definierenden Vordermarken zu verhindern, daß der Bogen zurückprallt und somit nicht mehr exakt positioniert der Bogen verarbeitenden Maschine zugeführt wird, kann der Bewegungsverlauf des Bändertischs während eines Arbeitstakts etwa sinusförmig sein, wobei der Sollzeitpunkt der Zeitpunkt der geringsten Fördergeschwindigkeit des Bändertischs ist.In order to prevent the sheet from rebounding and thus no longer being fed to the sheet processing machine by bumping the sheet at high speed at the front marks defining the transfer position, the course of movement of the Belt table during a work cycle be approximately sinusoidal, the target time being the time of the lowest conveyor speed of the belt table.

Erfolgt die Übergabe der Bogen von der Saugkopfeinheit zum Bändertisch etwa zum Zeitpunkt der geringsten Fördergeschwindigkeit des Bändertischs, so kann die Übergabe der Bogen mit hoher Exaktheit erfolgen, was dazu führt, daß die Bogen auch mit hoher Exaktheit ihrer Lage zur Übergabeposition der Bogen verarbeitenden Maschine gelangen.If the transfer of the sheets from the suction head unit to the belt table takes place approximately at the time of the slowest conveying speed of the belt table, the sheets can be transferred with high accuracy, which means that the sheets also reach the transfer position of the sheet processing machine with a high degree of accuracy in their position .

Eine selbsttätige Korrektur kann auf einfache Weise dadurch erreicht werden, daß das bzw. die Signale der Sensoren sowie ein Taktsignal des Bändertischs einer Verarbeitungselektronik zuleitbar und von dieser daraus die positive bzw. negative Abweichung des Istzeitpunkts vom Sollzeitpunkt ermittelbar, sowie ein entsprechendes Korrektursignal zur Vor- bzw. Nacheilung des Arbeitstakts dem Antrieb des Saugkopfs zuleitbar ist.An automatic correction can be achieved in a simple manner in that the signals or the signals from the sensors and a clock signal from the conveyor table can be fed to processing electronics and from this the positive or negative deviation of the actual time from the target time can be determined, as well as a corresponding correction signal for the preliminary or lag of the work cycle can be fed to the drive of the suction head.

Es ist aber auch möglich, daß der Antrieb des Saugkopfs manuell vor- bzw. nacheilend verstellbar ist.However, it is also possible for the drive of the suction head to be manually adjustable in advance or lag.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigen

Figur 1
eine Seitenansicht einer Bogenanlegereinheit
Figur 2
eine Draufsicht der Bogenanlegereinheit nach Figur 1
Figur 3
ein Diagramm der Geschwindigkeit der Transportbänder über der Zeit des Bändertischs des Bogenanlegers nach Figur 1.
An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it
Figure 1
a side view of a sheet feeder unit
Figure 2
2 shows a top view of the sheet feeder unit according to FIG. 1
Figure 3
2 shows a diagram of the speed of the conveyor belts over the time of the belt table of the sheet feeder according to FIG. 1.

Die in den Figuren dargestellte Bogenanlegereinheit weist einen Stapeltisch 1 auf, auf dem ein Bogenstapel 2 gelagert ist. Der jeweils oberste Bogen 5 des Bogenstapels 2 wird von Trennsaugern 4 einer Saugkopfeinheit 5 vom Bogenstapel 2 abgehoben, Schleppsaugern 6 der Saugkopfeinheit 5 übergeben und von diesen in Förderrichtung 7 zu einem Übernahmeende eines Bändertischs 8 zugeführt.The sheet feeder unit shown in the figures has a stacking table 1 on which a sheet stack 2 is mounted. The uppermost sheet 5 of the sheet stack 2 is lifted from the sheet stack 2 by suction cups 4 of a suction head unit 5, transferring suction cups 6 to the suction head unit 5 and fed by the latter in the conveying direction 7 to a transfer end of a belt table 8.

Der Bändertisch 8 besitzt in Förderrichtung 7 an seinem Übernahmeende und an seinem Übergabeende sich quer zur Förderrichtung 7 erstreckende drehbar antreibbare Walzen 9, um die nebeneinander mehrere Transportbänder 10 geführt sind, die als Saugbänder ausgeführt sein können. In Förderrichtung 7 folgt dem Bändertisch eine Bogen verarbeitende Maschine 11, die im vorliegenden Ausführungsbeispiel eine Druckmaschine ist.The conveyor table 8 has rotatably drivable rollers 9 in the conveying direction 7 at its take-over end and at its transfer end extending transversely to the conveying direction 7, around which a plurality of conveyor belts 10 are arranged side by side are performed, which can be designed as suction belts. In the conveying direction 7, the belt table is followed by a sheet-processing machine 11, which in the present exemplary embodiment is a printing machine.

Sowohl die Saugkopfeinheit 5, als auch der Bändertisch 8 und die Bogen verarbeitende Maschine 11 besitzen eigene Antriebe. So besitzt die Saugkopfeinheit 5 den Antrieb 12, der Bändertisch 8 den Antrieb 13 und die Bogen verarbeitende Maschine 11 den Antrieb 14.Both the suction head unit 5 and the belt table 8 and the sheet processing machine 11 have their own drives. The suction head unit 5 has the drive 12, the belt table 8 the drive 13 and the sheet-processing machine 11 the drive 14.

Damit der Bändertisch 8 taktgleich und synchron zum Arbeitstakt der Bogen verarbeitenden Maschine 11 angetrieben wird, wird über eine Leitung 15 vom Antrieb 14 ein Synchronisiersignal einer Verarbeitungselektronik 16 zugeführt, die wiederum über eine Leitung 17 ein einen Synchronlauf von Bändertisch 13 und Bogen verarbeitender Maschine 11 sicherstellendes Signal dem Antrieb 13 zuleitet.So that the belt table 8 is driven synchronously and synchronously with the working cycle of the sheet-processing machine 11, a synchronization signal is fed to processing electronics 16 via a line 15 from the drive 14, which in turn ensures a synchronous operation of the belt table 13 and sheet-processing machine 11 via line 17 Signal to the drive 13 passes.

Wie in Figur 3 zu sehen ist erfolgt der Antrieb des Bändertischs 8 derart, daß während eines Arbeitstaktes "A" die Transportbänder 10 aus geringer Fördergeschwindigkeit heraus beschleunigt und zum Ende des Arbeitstakts wieder auf die geringe Fördergeschwindigkeit verzögert werden. Dadurch ist der Bewegungsverlauf der Transportbänder 10 des Bändertischs 8 etwa sinusförmig.As can be seen in FIG. 3, the belt table 8 is driven in such a way that the conveyor belts 10 are accelerated from a low conveying speed during a work cycle "A" and decelerated to the low conveying speed again at the end of the working cycle. As a result, the course of movement is the Conveyor belts 10 of the belt table 8 are approximately sinusoidal.

Sowohl die Übergabe der Bogen von der Saugkopfeinheit 5 an den Bändertisch 8 als auch die Übergabe der Bogen vom Bändertisch 8 an die Bogen verarbeitende Maschine 11 erfolgt im Idealfall zum Zeitpunkt der geringsten Fördergeschwindigkeit des Bändertischs 8.Both the transfer of the sheets from the suction head unit 5 to the belt table 8 and the transfer of the sheets from the belt table 8 to the sheet processing machine 11 ideally take place at the time of the lowest conveying speed of the belt table 8.

Um eine derartige Abstimmung der Arbeitstakte von Bändertisch 8 und Saugkopfeinheit 5 zu gewährleisten, wird auch der Antrieb 12 der Saugkopfeinheit 5 über eine Leitung 18 von der Verarbeitungselektronik 16 entsprechend angesteuert.In order to ensure such coordination of the work cycles of belt table 8 and suction head unit 5, the drive 12 of the suction head unit 5 is also controlled accordingly by the processing electronics 16 via a line 18.

Zum Beispiel durch die unterschiedliche Oberflächenbeschaffenheit bei Bogen verschiedener Qualität oder verschiedener Materialien, kann es auf dem Transportweg von der Saugkopfeinheit 5 bis zur Übergabe an die Bogen verarbeitende Maschine 11 zu Schlupf zwischen dem Bogen und den ihn transportierenden Einheiten kommen, so daß der Bogen später die Übergabeposition zur Bogen verarbeitenden Maschine 11 erreicht, als es zu deren Arbeitstakt erforderlich ist.For example, due to the different surface properties of sheets of different quality or different materials, there may be slippage between the sheet and the units transporting it on the transport path from the suction head unit 5 to the transfer to the sheet processing machine 11, so that the sheet later becomes the Transfer position to the sheet-processing machine 11 reached than is required for the work cycle.

Um dies zu vermeiden, wird durch einen optischen Sensor 19 das Erreichen der Übergabeposition zur Bogen verarbeitenden Maschine 11 erfaßt und ein entsprechendes Signal über eine Leitung 20 der Verarbeitungselektronik 16 zugeleitet. Dabei kann sich der optische Sensor 19 im Bereich der Übergabeposition unterhalb der Transportebene des Bogens befinden und bei Erreichen der Übergabeposition durch die Vorderkante des Bogens das Signal auslösen. Weicht der Istzeitpunkt des Erreichens der Übergabeposition zur Bogen verarbeitenden Maschine 11 von dem durch den Arbeitstakt der Bogen verarbeitenden Maschine 11 vorgegebenen Sollzeitpunkt ab, so wird dies von der Verarbeitungselektronik erkannt und der Antrieb 12 der Saugkopfeinheit 5 in seinem Arbeitstakt entsprechend voreilend oder nacheilend angesteuert.In order to avoid this, an optical sensor 19 means that the transfer position to the sheet is reached Machine 11 detects and a corresponding signal is fed via a line 20 to the processing electronics 16. The optical sensor 19 can be located in the area of the transfer position below the transport plane of the sheet and can trigger the signal when the transfer position is reached through the front edge of the sheet. If the actual time of reaching the transfer position to the sheet-processing machine 11 differs from the target time specified by the working cycle of the sheet-processing machine 11, then this is recognized by the processing electronics and the drive 12 of the suction head unit 5 is actuated accordingly in its working cycle in a leading or lagging manner.

Bei vom optischen Sensor 19 festgestelltem nacheilenden Erreichen der Übergabeposition werden dann entsprechend voreilend die Bogen von der Saugkopfeinheit 5 dem Bändertisch 8 zugeführt. Damit erreichen die Bogen dann taktgenau die Übergabeposition zur Bogen verarbeitenden Maschine.When the transfer position is reached after detection by the optical sensor 19, the sheets are accordingly advanced from the suction head unit 5 to the conveyor table 8. The sheets then reach the transfer position to the sheet processing machine precisely to the cycle.

Während in Figur 3 durch die Kurve 21 der unveränderliche Bewegungsverlauf der Transportbänder 10 dargestellt ist, wird mit "A" der Arbeitstakt der Saugkopfeinheit 5 bezeichnet. Wird durch entsprechende Ansteuerung eine Voreilung des Arbeitstaktes der Saugkopfeinheit 5 erreicht, so erfolgt dieser Arbeitstakt während des mit "A'" bezeichneten Zeitraums; bei Nacheilung während des mit "A''" bezeichneten Zeitraums.While the unchangeable course of movement of the conveyor belts 10 is represented by the curve 21 in FIG. 3, “A” denotes the working cycle of the suction head unit 5. If the control is used, the working cycle of the suction head unit is advanced 5 reached, this work cycle takes place during the period designated "A '"; in case of lag during the period marked "A ''".

Wie der Kurve 21 des Bewegungsverlaufs der Transportbänder entnehmbar ist, ist selbst bei Voreilung oder Nacheilung der Übergabe der Bogen durch die Saugkopfeinheit 5 das Geschwindigkeitsniveau der Saugbänder weitgehend gleich niedrig, so daß immer eine exakte Übergabe der Bogen durch die Saugkopfeinheit 5 erfolgt.As can be seen from curve 21 of the course of movement of the conveyor belts, the speed level of the suction belts is largely the same even if the transfer of the sheets by the suction head unit 5 leads or lags, so that the sheets are always transferred exactly by the suction head unit 5.

Im vorliegenden Ausführungsbeispiel besitzen die Bogen verarbeitende Maschine 11 und der Bändertisch 8 eigene Antriebe, wobei die Verarbeitungselektronik 16 einen Synchronlauf sicherstellt. Es versteht sich, daß ein solcher Synchronlauf auch erreicht werden kann, wenn durch den Antrieb der Bogen verarbeitenden Maschine 11 auch der Antrieb des Bändertischs erfolgt.In the present exemplary embodiment, the sheet-processing machine 11 and the belt table 8 have their own drives, the processing electronics 16 ensuring synchronous operation. It goes without saying that such synchronous operation can also be achieved if the drive of the sheet processing machine 11 also drives the conveyor table.

Claims (12)

Bogenanlegereinheit mit einer Saugkopfeinheit, durch die Bogen vereinzelt einem Bogenstapel entnehmbar und einem Bändertisch zuführbar sowie von dem Bändertisch einer Bogen verarbeitenden Maschine zuförderbar sind, wobei Saugkopfeinheit und Bändertisch im Takt der Bogen verarbeitenden Maschine antreibbar sind, dadurch gekennzeichnet, daß der Istzeitpunkt des Erreichens der Übergabeposition zur Bogen verarbeitenden Maschine (11) durch den vordersten, auf dem Bändertisch (8) befindlichen Bogen erfaßbar und mit einem Sollzeitpunkt vergleichbar sowie der Arbeitstakt der Saugkopfeinheit (5) entsprechend der Abweichung des Sollzeitpunkts vom Istzeitpunkt vor- bzw. nacheilend korrigierbar ist.Sheet feeder unit with a suction head unit, by means of which sheets can be removed from a stack of sheets and fed to a belt table and fed from the belt table to a sheet processing machine, the suction head unit and belt table being drivable in time with the sheet processing machine, characterized in that the actual time of reaching the transfer position to the sheet-processing machine (11) can be detected by the foremost sheet on the belt table (8) and can be compared with a target time, and the working cycle of the suction head unit (5) can be corrected in advance or lagging in accordance with the deviation of the target time from the actual time. Bogenanlegereinheit nach Anspruch 1, dadurch gekennzeichnet, daß der Istzeitpunkt des Erreichens der Übergabeposition durch einen Sensor erfaßbar ist.Sheet feeder unit according to claim 1, characterized in that the actual time of reaching the transfer position can be detected by a sensor. Bogenanlegereinheit nach Anspruch 2, dadurch gekennzeichnet, daß durch den Sensor das Erreichen der Übergabeposition durch die Vorderkante des vordersten Bogens erfaßbar ist.Sheet feeder unit according to claim 2, characterized in that the sensor reaches the transfer position through the front edge the foremost arc is detectable. Bogenanlegereinheit nach Anspruch 2, dadurch gekennzeichnet, daß mehrere, über die Bogenbreite verteilte Sensoren angeordnet sind.Sheet feeder unit according to claim 2, characterized in that a plurality of sensors distributed over the sheet width are arranged. Bogenanlegereinheit nach Anspruch 4, dadurch gekennzeichnet, daß der mittlere Schaltzeitpunkt der Sensoren den Istzeitpunkt bildet.Sheet feeder unit according to claim 4, characterized in that the average switching time of the sensors forms the actual time. Bogenanlegereinheit nach Anspruch 2, dadurch gekennzeichnet, daß der bzw. die Sensoren optische Sensoren (19) sind.Sheet feeder unit according to claim 2, characterized in that the sensor or sensors are optical sensors (19). Bogenanlegereinheit nach Anspruch 6, dadurch gekennzeichnet, daß der bzw. die Sensoren Lichtreflektionssensoren sind.Sheet feeder unit according to claim 6, characterized in that the sensor or sensors are light reflection sensors. Bogenanlegereinheit nach Anspruch 1, dadurch gekennzeichnet, daß Saugkopfeinheit (5) und Bändertisch (8) separate Antriebe (12, 13) besitzen.Sheet feeder unit according to claim 1, characterized in that the suction head unit (5) and the belt table (8) have separate drives (12, 13). Bogenanlegereinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Bewegungsverlauf des Bändertischs (8) während eines Arbeitstakts etwa sinusförmig ist, wobei der Sollzeitpunkt der Zeitpunkt der geringsten Fördergeschwindigkeit des Bändertischs (8) ist.Sheet feeder unit according to one of the preceding claims, characterized in that the course of movement of the belt table (8) during of a work cycle is approximately sinusoidal, the target time being the time of the lowest conveying speed of the belt table (8). Bogenanlegereinheit nach Anspruch 9, dadurch gekennzeichnet, daß die Übergabe der Bogen von der Saugkopfeinheit (5) zum Bändertisch (8) etwa zum Zeitpunkt der geringsten Fördergeschwindigkeit des Bändertischs (8) erfolgt.Sheet feed unit according to claim 9, characterized in that the transfer of the sheets from the suction head unit (5) to the belt table (8) takes place approximately at the time of the lowest conveying speed of the belt table (8). Bogenanlegereinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das bzw. die Signale der Sensoren (19) sowie ein Taktsignal des Bändertischs (8) einer Verarbeitungselektronik (16) zuleitbar und von dieser daraus die positive bzw. negative Abweichung des Istzeitpunkts vom Sollzeitpunkt ermittelbar sowie ein entsprechendes Korrektursignal zur Vor- bzw. Nacheilung des Arbeitstakts dem Antrieb (12) des Saugkopfs (5) zuleitbar ist.Sheet feeder unit according to one of the preceding claims, characterized in that the signal (s) from the sensors (19) and a clock signal from the belt table (8) can be fed to processing electronics (16) and from this the positive or negative deviation of the actual time from the desired time can be determined and a corresponding correction signal for leading or lagging the work cycle can be fed to the drive (12) of the suction head (5). Bogenanlegereinheit nach einem der Ansprüche 1 - 9, dadurch gekennzeichnet, daß der Antrieb des Saugkopfs manuell vor- bzw. nacheilend verstellbar ist.Sheet feeder unit according to one of claims 1 - 9, characterized in that the drive of the suction head is manually adjustable in advance or lag.
EP94112476A 1993-09-17 1994-08-10 Sheet feeder unit Expired - Lifetime EP0644139B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4331610A DE4331610A1 (en) 1993-09-17 1993-09-17 Sheet feeder unit
DE4331610 1993-09-17

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EP0644139A1 true EP0644139A1 (en) 1995-03-22
EP0644139B1 EP0644139B1 (en) 1996-11-27

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US (1) US5595381A (en)
EP (1) EP0644139B1 (en)
JP (1) JP2637372B2 (en)
AT (1) ATE145625T1 (en)
DE (2) DE4331610A1 (en)

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DE10021211B4 (en) * 2000-04-29 2008-11-20 Koenig & Bauer Aktiengesellschaft Device for feeding sheets
US8746674B2 (en) 2006-05-04 2014-06-10 Heidelberger Druckmaschinen Ag Non-integer overlap feeder for machines processing printing materials
WO2021032567A1 (en) * 2019-08-21 2021-02-25 Koenig & Bauer Ag Device for feeding sheets

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DE19724733C2 (en) * 1997-06-12 2001-10-04 Roland Man Druckmasch Sheet feeder
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JP3995874B2 (en) * 2000-09-29 2007-10-24 理想科学工業株式会社 Printing apparatus and control method thereof
DE10151484B4 (en) * 2001-10-18 2005-07-28 Man Roland Druckmaschinen Ag sheet feeder
DE10310696A1 (en) * 2003-03-12 2004-09-23 Koenig & Bauer Ag Sheet feeder has stack stop grid, flap shaft and stacking plate forming functional unit which is installed in sheet feeder in or opposite transporting direction
DE102008013101B4 (en) * 2007-03-23 2022-08-11 Heidelberger Druckmaschinen Ag Sheet feeder with variable shingle length and sheet arrival control
DE102012024734B4 (en) * 2012-01-18 2023-04-06 Heidelberger Druckmaschinen Ag Method for feeding sheets to a printing machine
DE102013010750A1 (en) * 2012-07-23 2014-01-23 Heidelberger Druckmaschinen Ag Feeder for e.g. printing machine for underlapped supply of e.g. paper, has suction and transport unit controllable by control unit such that underlapped sheet current with defined underlapped flaking is produced
CN106315267B (en) * 2016-08-16 2018-06-05 浙江茉织华印刷股份有限公司 A kind of paper system of printing machine

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Also Published As

Publication number Publication date
JP2637372B2 (en) 1997-08-06
ATE145625T1 (en) 1996-12-15
US5595381A (en) 1997-01-21
DE59401144D1 (en) 1997-01-09
DE4331610A1 (en) 1995-03-23
JPH07165340A (en) 1995-06-27
EP0644139B1 (en) 1996-11-27

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