EP2660171A2 - Suction transportation device and method for removing a sheet from a stack of sheets - Google Patents

Suction transportation device and method for removing a sheet from a stack of sheets Download PDF

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Publication number
EP2660171A2
EP2660171A2 EP20130165256 EP13165256A EP2660171A2 EP 2660171 A2 EP2660171 A2 EP 2660171A2 EP 20130165256 EP20130165256 EP 20130165256 EP 13165256 A EP13165256 A EP 13165256A EP 2660171 A2 EP2660171 A2 EP 2660171A2
Authority
EP
European Patent Office
Prior art keywords
suction
devices
sheet
transport device
adjustable
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.)
Withdrawn
Application number
EP20130165256
Other languages
German (de)
French (fr)
Other versions
EP2660171A3 (en
Inventor
Claus-Dieter Redmer
Klaus Dieter Siegmund
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.)
MBO Postpress Solutions GmbH
Original Assignee
Maschinenbau Oppenweiler Binder GmbH and Co KG
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
Application filed by Maschinenbau Oppenweiler Binder GmbH and Co KG filed Critical Maschinenbau Oppenweiler Binder GmbH and Co KG
Publication of EP2660171A2 publication Critical patent/EP2660171A2/en
Publication of EP2660171A3 publication Critical patent/EP2660171A3/en
Withdrawn legal-status Critical Current

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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
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/12—Suction bands, belts, or tables moving relatively to the pile
    • B65H3/124—Suction bands or belts
    • B65H3/128—Suction bands or belts 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
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/12—Suction bands, belts, or tables moving relatively to the 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
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/12—Suction bands, belts, or tables moving relatively to the pile
    • B65H3/124—Suction bands or belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/26—Particular arrangement of belt, or belts
    • B65H2404/264—Arrangement of side-by-side belts
    • B65H2404/2641—Arrangement of side-by-side belts on movable frame
    • 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
    • B65H2406/33—Rotary suction means, e.g. roller, cylinder or drum
    • B65H2406/334—Rotary suction means, e.g. roller, cylinder or drum arranged on movable frame
    • 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
    • B65H2511/12—Width
    • 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
    • B65H2511/20—Location in space
    • B65H2511/22—Distance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a suction transport device for removing a sheet from a stack of sheets in a sheet running direction, which has at least two circumferential suction devices, and a method for removing sheets.
  • a sheet feeder for folding machines on which a suction transport device is provided, which has a continuously rotating suction wheel with horizontal and transverse to the sheet running direction axis of rotation.
  • a suction transport device which has a continuously rotating suction wheel with horizontal and transverse to the sheet running direction axis of rotation.
  • the invention has for its object to provide a suction transport device with structurally simple means, can be reliably removed with the sheet of different format from a stack of sheets.
  • two suction devices are mounted transversely to the sheet travel direction and horizontally adjustable. This makes it possible to reduce or increase the distance between the two suction devices depending on the size of the sheet to be removed. This ensures that sheets of various sizes are reliably and accurately transported to a further processing machine.
  • the adjustable suction devices are preferably mounted transversely to the sheet travel direction and rotatably mounted on a drive shaft so that they can be driven by a single drive.
  • a fixed suction device is provided in the middle between the adjustable suction devices, of which the adjustable suction devices each have the same distance. With such a suction transport device even the smallest bows can be safely removed.
  • the drive shaft is driven by a servomotor controlled by a control device.
  • the controller is configured to control the servo motor to apply suction to suction devices to remove a sheet from the stack of sheets, and to initially rotate the suction devices at minimum speed, then accelerate the suction devices to a maximum speed, then the maximum speed a predetermined period of time is maintained, and then the suction air is switched off and the suction devices are retarded to minimum speed.
  • the two adjustable suction devices are each formed by a suction belt and the specified suction device in the middle of a suction roll.
  • the suction transport device 10 comprises two horizontally spaced suction belts 12, 14 and arranged in the middle between the two suction belts 12, 14 suction roller 22.
  • the two suction belts 12, 14 each comprise a small roller 18 and a larger roller 16, of an endless band 20 are surrounded.
  • the rollers 16 of the suction belts 12, 14 are non-rotatably mounted on a common drive shaft 26 and can be axially displaced on the drive shaft 26.
  • a drive pinion 23 Adjacent to the suction roller 22, a drive pinion 23 is rotatably mounted on the drive shaft 26, which of a in FIG. 1
  • servomotor 30, which is shown explosively, is rotated via an endless toothed belt 28.
  • the suction belts 12, 14 and the suction roller 22 are each connected via a suction line 40 to a vacuum device.
  • FIG. 1 shown position of the suction belts 12, 14 is suitable for the decrease of smaller bow. If larger sheet formats are to be removed, the distance of the suction belts 12, 14 of the suction roller 22 can be changed by the push bar 32 is moved to the left, whereby the suction belt 12 moves to the left. The holder 25 of the suction belt 14 is then mounted on the attachment point 37. The sliding strip 32 is shifted in this case so that both suction belts 12, 14 have the same distance from the suction roller 22.
  • the servo motor 30 is driven by a control device, not shown, as in the speed-time diagram of FIG. 2 is shown.
  • the speed of the two suction belts 12, 14 and the suction roller 22 is minimal and they are acted upon by suction.
  • the suction belts 12, 14 and the suction roller 22 may also be stationary at this time.
  • the suction belts 12, 14 and the suction roller 22 are accelerated to a maximum speed up to the time t 2 . This maximum speed is then maintained until time t 4 , at which the suction air is switched off. Subsequently, the suction belts 12, 14 and the suction roller 22 are delayed until finally the initial minimum speed is reached.
  • the acceleration can also be made variable.
  • a suction roll 22 and two suction belts 12, 14 are provided.
  • other embodiments are conceivable in which only two adjustable suction belts or suction rollers are used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

The suction transport device (10) has circumferential suction devices (12,14) that are mounted transversely and horizontally adjustable along the sheet running direction (BL). The suction roll (22) is arranged between the suction devices. The suction devices are surrounded by endless tape (20). The suction devices and the suction roll are connected over suction line with low pressure device. An independent claim is included for method for extracting sheet from sheet stack.

Description

Die Erfindung betrifft eine Saugtransportvorrichtung zur Abnahme eines Bogens von einem Bogenstapel in einer Bogenlaufrichtung, die wenigstens zwei umlaufende Saugeinrichtungen aufweist, sowie ein Verfahren zur Abnahme von Bogen.The invention relates to a suction transport device for removing a sheet from a stack of sheets in a sheet running direction, which has at least two circumferential suction devices, and a method for removing sheets.

Aus der DE 26 37 073 A1 ist ein Bogenanleger für Falzmaschinen bekannt, an dem eine Saugtransportvorrichtung vorgesehen ist, die ein ständig umlaufendes Saugrad mit horizontaler und quer zur Bogenlaufrichtung liegender Drehachse aufweist. Mittels des Saugrades wird ein oberster Bogen auf einem Bogenstapel erfasst und zu einer weiterverarbeiteriden Maschine, zum Beispiel einer Falzmaschine, weitertransportiert.From the DE 26 37 073 A1 a sheet feeder for folding machines is known, on which a suction transport device is provided, which has a continuously rotating suction wheel with horizontal and transverse to the sheet running direction axis of rotation. By means of the suction wheel a top sheet is detected on a stack of sheets and transported to a further processing machine, for example a folding machine.

Bei Saugtransportvorrichtungen, die nur ein einziges Saugrad umfassen, hat sich herausgestellt, dass es oft zu Schieflagen der Bogen kommt, so dass der Bogen nicht ordnungsgemäß weitertransportiert wird. Aus diesem Grund ist man dazu übergegangen, die Saugtransportvorrichtung mit zwei Saugrädern auszustatten, die im gleichen Abstand zur Mittellinie eines Bogens fest installiert werden. Diese beiden Saugräder werden für alle möglichen Bogenformate von groß bis klein verwendet. Insbesondere bei sehr großen Bogen kann es vorkommen, dass der Bogen an den Seitenrändern aufgrund seiner Trägheit mit geringerer Geschwindigkeit transportiert wird als in dem Bereich, an dem die Saugräder angreifen. Der Bogen kann sich hierdurch ungewünscht verformen.In Saugtransportvorrichtungen comprising only a single suction wheel, it has been found that it often comes to imbalances of the bow, so that the sheet is not properly transported. For this reason, it has gone over to equip the suction transport device with two suction wheels, which are fixedly installed at the same distance to the center line of a bow. These two suction wheels are used for all possible sheet sizes from large to small. Especially with very large sheets, it may happen that the sheet is transported at the side edges due to its inertia at a lower speed than in the area where the suction wheels attack. The bow can thereby deform undesirably.

Der Erfindung liegt die Aufgabe zugrunde, mit konstruktiv einfachen Mitteln eine Saugtransportvorrichtung zu schaffen, mit der Bogen unterschiedlichen Formates zuverlässig von einem Bogenstapel abgenommen werden können.The invention has for its object to provide a suction transport device with structurally simple means, can be reliably removed with the sheet of different format from a stack of sheets.

Diese Aufgabe wird durch eine Saugtransportvorrichtung mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Weiterbildungen der erfindungsgemäßen Saugtransportvorrichtung sind Gegenstand der Patentansprüche 2 bis 6.This object is achieved by a suction transport device having the features of patent claim 1. Advantageous developments of the suction transport device according to the invention are the subject of claims 2 to 6.

Ein Verfahren, mit dem Bogen zuverlässig von einem Bogenstapel abgenommen werden können, ist Gegenstand des Patentanspruchs 7.A method by which sheets can be reliably removed from a stack of sheets is the subject of patent claim 7.

Bei der erfindungsgemäßen Saugtransportvorrichtung sind zwei Saugeinrichtungen quer zur Bogenlaufrichtung und horizontal verstellbar angebracht. Hierdurch wird es ermöglicht, den Abstand der beiden Saugeinrichtungen abhängig von der Größe des abzunehmenden Bogens zu verringern bzw. zu vergrößern. Dies gewährleistet, dass Bogen verschiedenster Größe zuverlässig und exakt an eine weiterverarbeitende Maschine weitertransportiert werden.In the suction transport device according to the invention two suction devices are mounted transversely to the sheet travel direction and horizontally adjustable. This makes it possible to reduce or increase the distance between the two suction devices depending on the size of the sheet to be removed. This ensures that sheets of various sizes are reliably and accurately transported to a further processing machine.

Die verstellbaren Saugeinrichtungen sind bevorzugt quer zur Bogenlaufrichtung verschiebbar und drehfest auf einer Antriebswelle angebracht, damit sie von nur einem einzigen Antrieb angetrieben werden können.The adjustable suction devices are preferably mounted transversely to the sheet travel direction and rotatably mounted on a drive shaft so that they can be driven by a single drive.

Bei einer bevorzugten Ausführungsform ist in der Mitte zwischen den verstellbaren Saugeinrichtungen eine festgelegte Saugeinrichtung vorgesehen, von der die verstellbaren Saugeinrichtungen jeweils den gleichen Abstand haben. Mit einer solchen Saugtransportvorrichtung können auch kleinste Bögen sicher abgenommen werden.In a preferred embodiment, a fixed suction device is provided in the middle between the adjustable suction devices, of which the adjustable suction devices each have the same distance. With such a suction transport device even the smallest bows can be safely removed.

Bei einer weiteren bevorzugten Ausführungsform wird die Antriebswelle von einem von einer Steuereinrichtung gesteuerten Servomotor angetrieben. Die Steuereinrichtung ist so konfiguriert, dass sie den Servomotor so steuert, dass zur Abnahme eines Bogens vom Bogenstapel die Saugeinrichtungen mit Saugluft beaufschlagt werden und die Saugeinrichtungen zunächst mit minimaler Drehzahl gedreht werden, dann die Saugeinrichtungen auf eine maximale Drehzahl beschleunigt werden, dann die maximale Drehzahl einen vorherbestimmten Zeitabschnitt aufrecht erhalten wird, und dann die Saugluft abgeschaltet wird und die Saugeinrichtungen wieder auf minimale Drehzahl verzögert werden.In a further preferred embodiment, the drive shaft is driven by a servomotor controlled by a control device. The controller is configured to control the servo motor to apply suction to suction devices to remove a sheet from the stack of sheets, and to initially rotate the suction devices at minimum speed, then accelerate the suction devices to a maximum speed, then the maximum speed a predetermined period of time is maintained, and then the suction air is switched off and the suction devices are retarded to minimum speed.

Durch diese Steuerung der Servomotoren wird sichergestellt, dass keine Trägheitseffekte an den Rändern des Bogens auftreten, die zu einem Verziehen des Bogens führen können. Bevorzugt werden die beiden verstellbaren Saugeinrichtungen jeweils von einem Saugband und die festgelegte Saugeinrichtung in der Mitte von einer Saugwalze gebildet.This control of the servomotors ensures that no inertial effects occur at the edges of the sheet which can lead to warping of the sheet. Preferably, the two adjustable suction devices are each formed by a suction belt and the specified suction device in the middle of a suction roll.

Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand von Zeichnungen näher erläutert. Es zeigt

Figur 1
eine Saugtransportvorrichtung in perspektivischer Ansicht,
Figur 2
den Drehzahlverlauf von Saugeinrichtungen bei der Abnahme eines Bogens.
An embodiment of the invention will be explained below with reference to drawings. It shows
FIG. 1
a suction transport device in perspective view,
FIG. 2
the speed curve of suction devices when taking a bow.

Die Saugtransportvorrichtung 10 umfasst zwei horizontal im Abstand zueinander angeordnete Saugbänder 12, 14 und eine in der Mitte zwischen den beiden Saugbändern 12, 14 angeordnete Saugwalze 22. Die beiden Saugbänder 12, 14 umfassen jeweils eine kleine Walze 18 und eine größere Walze 16, die von einem endlosen Band 20 umgeben sind. Die Walzen 16 der Saugbänder 12, 14 sitzen drehfest auf einer gemeinsamen Antriebswelle 26 und können auf der Antriebswelle 26 axial verschoben werden.The suction transport device 10 comprises two horizontally spaced suction belts 12, 14 and arranged in the middle between the two suction belts 12, 14 suction roller 22. The two suction belts 12, 14 each comprise a small roller 18 and a larger roller 16, of an endless band 20 are surrounded. The rollers 16 of the suction belts 12, 14 are non-rotatably mounted on a common drive shaft 26 and can be axially displaced on the drive shaft 26.

Angrenzend an die Saugwalze 22 ist auf der Antriebswelle 26 ein Antriebsritzel 23 drehfest angebracht, das von einem in Figur 1 aus Gründen der Übersichtlichkeit explosionsartig dargestellten Servomotor 30 über einen endlosen Zahnriemen 28 in Drehung versetzt wird. Die Saugbänder 12, 14 und die Saugwalze 22 sind jeweils über eine Saugleitung 40 mit einer Unterdruckvorrichtung verbunden.Adjacent to the suction roller 22, a drive pinion 23 is rotatably mounted on the drive shaft 26, which of a in FIG. 1 For reasons of clarity, servomotor 30, which is shown explosively, is rotated via an endless toothed belt 28. The suction belts 12, 14 and the suction roller 22 are each connected via a suction line 40 to a vacuum device.

Beidseitig der Saugwalze 22 sind gestellfeste Lagerböcke 36, 38 angeordnet, durch die die Antriebswelle 26 hindurchgeht. Auf der Oberseite der Lagerböcke sind rechteckige Führungsaussparungen 40, 41 ausgebildet, in denen eine Schubleiste 32 horizontal und quer zur Bogenlaufrichtung BL verschieblich geführt ist. An dem in Figur 1 linken Stirnende der Schubleiste 32 ist eine Halterung 24 befestigt, an der das Saugband 12 angebracht ist. Eine entsprechende Halterung 25 ist in Figur 1 angrenzend an den Lagerblock 38 an einer Befestigungsstelle 33 an der Schubleiste 32 von unten angeschraubt. Die Schubleiste 32 weist einen weiteren Befestigungspunkt 37 angrenzend an das in Figur 1 gezeigte rechte Ende der Schubleiste 32 auf.On both sides of the suction roller 22 frame-fixed bearing blocks 36, 38 are arranged, through which the drive shaft 26 passes. On top of the bearing blocks rectangular guide recesses 40, 41 are formed, in which a push bar 32 is guided horizontally and transversely to the sheet running direction BL slidably. At the in FIG. 1 left front end of the push bar 32 is a bracket 24 attached to which the suction belt 12 is attached. A corresponding holder 25 is in FIG. 1 screwed adjacent to the bearing block 38 at an attachment point 33 on the push bar 32 from below. The sliding strip 32 has a further attachment point 37 adjacent to the in FIG. 1 shown right end of the sliding bar 32.

Die in Figur 1 gezeigte Stellung der Saugbänder 12, 14 ist für die Abnahme kleinerer Bogen geeignet. Wenn größere Bogenformate abgenommen werden sollen, kann der Abstand der Saugbänder 12, 14 von der Saugwalze 22 dadurch verändert werden, dass die Schubleiste 32 nach links verschoben wird, wodurch sich auch das Saugband 12 nach links bewegt. Die Halterung 25 des Saugbandes 14 wird dann an der Befestigungsstelle 37 montiert. Die Schubleiste 32 ist in diesem Fall so verschoben, dass beide Saugbänder 12, 14 den gleichen Abstand zu der Saugwalze 22 haben.In the FIG. 1 shown position of the suction belts 12, 14 is suitable for the decrease of smaller bow. If larger sheet formats are to be removed, the distance of the suction belts 12, 14 of the suction roller 22 can be changed by the push bar 32 is moved to the left, whereby the suction belt 12 moves to the left. The holder 25 of the suction belt 14 is then mounted on the attachment point 37. The sliding strip 32 is shifted in this case so that both suction belts 12, 14 have the same distance from the suction roller 22.

Der Servomotor 30 wird von einer nicht gezeigten Steuereinrichtung so angetrieben, wie es in dem Drehzahl-Zeitdiagramm von Figur 2 dargestellt ist. Zum Zeitpunkt 0 ist die Drehzahl der beiden Saugbänder 12, 14 und der Saugwalze 22 minimal und sie werden mit Saugluft beaufschlagt. Die Saugbänder 12, 14 und die Saugwalze 22 können zu diesem Zeitpunkt auch stillstehen. Ab dem Zeitpunkt t1 werden die Saugbänder 12, 14 und die Saugwalze 22 bis zum Zeitpunkt t2 auf eine maximale Drehzahl beschleunigt. Diese maximale Drehzahl wird dann bis zum Zeitpunkt t4 aufrecht erhalten, zu dem die Saugluft abgeschaltet wird. Anschließend werden die Saugbänder 12, 14 und die Saugwalze 22.verzögert, bis schließlich die Anfangsminimaldrehzahl erreicht ist. Wie es anhand der gestrichelten Linie zwischen den Zeitpunkten t1 und t3 gezeigt ist, kann die Beschleunigung auch variabel gestaltet werden.The servo motor 30 is driven by a control device, not shown, as in the speed-time diagram of FIG. 2 is shown. At time 0, the speed of the two suction belts 12, 14 and the suction roller 22 is minimal and they are acted upon by suction. The suction belts 12, 14 and the suction roller 22 may also be stationary at this time. From the time t 1 , the suction belts 12, 14 and the suction roller 22 are accelerated to a maximum speed up to the time t 2 . This maximum speed is then maintained until time t 4 , at which the suction air is switched off. Subsequently, the suction belts 12, 14 and the suction roller 22 are delayed until finally the initial minimum speed is reached. As shown by the dashed line between the times t 1 and t 3 , the acceleration can also be made variable.

Die beschriebene Verstellmöglichkeit mittels der Schubleiste ist nur eine von vielen denkbaren Möglichkeiten zur Verstellung der Saugbänder. Möglich ist natürlich auch eine Verstellung beispielsweise mit Hilfe von Antrieben, die auch von der Steuereinrichtung gesteuert werden.The described adjustment by means of the sliding bar is just one of many possible ways to adjust the suction belts. Of course, an adjustment, for example by means of drives, which are also controlled by the control device, is also possible.

Bei der beschriebenen Ausführungsform sind eine Saugwalze 22 und zwei Saugbänder 12, 14 vorgesehen. Es sind aber auch andere Ausführungen denkbar, bei denen nur zwei verstellbare Saugbänder oder Saugwalzen verwendet werden.In the described embodiment, a suction roll 22 and two suction belts 12, 14 are provided. However, other embodiments are conceivable in which only two adjustable suction belts or suction rollers are used.

Claims (7)

Saugtransportvorrichtung zur Abnahme eines Bogens von einem Bogenstapel in einer Bogenlaufrichtung (BL), mit wenigstens zwei umlaufenden Saugeinrichtungen (12, 14), dadurch gekennzeichnet, dass die wenigstens zwei Saugeinrichtungen (12, 14) quer zur Bogenlaufrichtung und horizontal verstellbar angebracht sind.Suction transport device for taking a sheet of a sheet stack in a sheet running direction (BL), with at least two circumferential suction devices (12, 14), characterized in that the at least two suction devices (12, 14) are mounted transversely to the sheet travel direction and horizontally adjustable. Saugtransportvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die verstellbaren Saugeinrichtungen (12, 14) quer zur Bogenlaufrichtung verschiebbar und drehfest auf einer Antriebswelle (26) angebracht sind.Suction transport device according to claim 1, characterized in that the adjustable suction devices (12, 14) are mounted transversely to the sheet running direction displaceable and rotationally fixed on a drive shaft (26). Saugtransportvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in der Mitte zwischen den verstellbaren Saugeinrichtungen (12, 14) eine festgelegte Saugeinrichtung (22) vorgesehen ist, von der die verstellbaren Saugeinrichtungen (12, 14) jeweils den gleichen Abstand haben.Suction transport device according to claim 1 or 2, characterized in that in the middle between the adjustable suction devices (12, 14) a fixed suction device (22) is provided, of which the adjustable suction devices (12, 14) each have the same distance. Saugtransportvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Antriebswelle (26) von einem von einer Steuereinrichtung gesteuerten Servomotor (30) angetrieben wird, wobei die Steuereinrichtung so konfiguriert ist, dass sie den Servomotor (30) so steuert, dass zur Abnahme eines Bogens vom Bogenstapel - die Saugeinrichtungen (12, 14, 22) mit Saugluft beaufschlagt werden und die Saugeinrichtungen zunächst mit minimaler Drehzahl gedreht werden, - dann die Saugeinrichtungen (12, 14, 22) auf eine maximale Drehzahl beschleunigt werden, - dann die maximale Drehzahl einen vorherbestimmten Zeitabschnitt aufrecht erhalten wird, - dann die Saugluft abgeschaltet wird und die Saugeinrichtungen (12, 14, 22) wieder auf minimale Drehzahl verzögert werden. Suction transport device according to one of the preceding claims, characterized in that the drive shaft (26) is driven by a control unit controlled by a servo motor (30), wherein the control device is configured so that it controls the servo motor (30) so that for the decrease of a Bow from the bow pile - The suction devices (12, 14, 22) are acted upon with suction and the suction devices are first rotated at minimum speed, - Then the suction devices (12, 14, 22) are accelerated to a maximum speed, then the maximum speed is maintained for a predetermined period of time, - Then the suction is switched off and the suction devices (12, 14, 22) are retarded to minimum speed. Saugtransportvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die minimale Drehzahl Null ist.Suction transport device according to claim 4, characterized in that the minimum speed is zero. Saugtransportvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die verstellbaren Saugeinrichtungen (12, 14) jeweils von einem Saugband und die festgelegte Saugeinrichtung (22) von einer Saugwalze gebildet werden.Suction transport device according to one of the preceding claims, characterized in that the adjustable suction devices (12, 14) are each formed by a suction belt and the fixed suction device (22) by a suction roller. Verfahren zur Abnahme von Bogen mittels wenigstens einer von einem Servomotor (30) drehbar angetriebenen Saugeinrichtung (12, 14, 22), bei dem - die Saugeinrichtung (12, 14, 22) mit Saugluft beaufschlagt wird und zunächst mit minimaler Drehzahl gedreht wird, - dann die Saugeinrichtung (12, 14, 22) auf eine maximale Drehzahl beschleunigt wird, - dann die maximale Drehzahl der Saugeinrichtung (12, 14, 22) einen vorherbestimmten Zeitabschnitt aufrechterhalten wird, - dann die Saugluft abgeschaltet wird und die Saugrichtung (12, 14, 22) wieder auf minimale Drehzahl verzögert wird. Method for taking off sheets by means of at least one suction device (12, 14, 22) rotatably driven by a servomotor (30), in which - The suction device (12, 14, 22) is acted upon by suction and is first rotated at minimum speed, - Then the suction device (12, 14, 22) is accelerated to a maximum speed, - Then the maximum speed of the suction device (12, 14, 22) is maintained for a predetermined period of time, - Then the suction is switched off and the suction direction (12, 14, 22) is delayed again to minimum speed.
EP13165256.2A 2012-05-03 2013-04-25 Suction transportation device and method for removing a sheet from a stack of sheets Withdrawn EP2660171A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201210207320 DE102012207320B4 (en) 2012-05-03 2012-05-03 Suction conveyor and method of removing a sheet from a stack of sheets

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EP2660171A3 (en) 2016-01-06
US20130309058A1 (en) 2013-11-21
DE102012207320A1 (en) 2013-11-07
US9126785B2 (en) 2015-09-08
JP2013234071A (en) 2013-11-21
CN103420186A (en) 2013-12-04

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